/* roulang page: index */
:root {
            --kaiyun-black: #191B1F;
            --kaiyun-bone: #F5F2EC;
            --kaiyun-copper: #B9783A;
            --kaiyun-copper-dark: #9A5F2E;
            --kaiyun-sage: #6C7770;
            --kaiyun-border: #E8E0D4;
            --kaiyun-white: #FFFFFF;
            --kaiyun-soft: #EDE7DD;
            --kaiyun-radius-card: 22px;
            --kaiyun-radius-btn: 999px;
            --kaiyun-shadow-soft: 0 10px 30px rgba(25, 27, 31, 0.06);
            --kaiyun-shadow-hover: 0 22px 45px rgba(25, 27, 31, 0.12);
            --kaiyun-transition: 200ms ease;
            --kaiyun-section-padding: 96px 0;
            --kaiyun-container-max: 1200px;
            --kaiyun-gutter: 2rem;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-ui: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--kaiyun-bone);
            color: var(--kaiyun-black);
            font-size: 16px;
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            overflow-x: hidden;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-serif);
            font-weight: 700;
            line-height: 1.35;
            color: var(--kaiyun-black);
            letter-spacing: 0.02em;
        }

        p {
            margin: 0 0 1rem;
            color: var(--kaiyun-sage);
        }

        a {
            color: var(--kaiyun-black);
            text-decoration: none;
            transition: color var(--kaiyun-transition);
        }

        a:hover {
            color: var(--kaiyun-copper);
            text-decoration: none;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-custom {
            max-width: var(--kaiyun-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-kaiyun {
            padding: var(--kaiyun-section-padding);
            position: relative;
        }

        .section-kaiyun.alt {
            background-color: #FFFFFF;
        }

        .section-kaiyun.dark {
            background-color: var(--kaiyun-black);
            color: #F2EEE8;
        }

        .section-kaiyun.dark h2,
        .section-kaiyun.dark h3,
        .section-kaiyun.dark h4 {
            color: #FFFFFF;
        }

        .section-kaiyun.dark p {
            color: rgba(245, 242, 236, 0.72);
        }

        .section-kaiyun.dark .text-sage {
            color: rgba(245, 242, 236, 0.6) !important;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.85rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--kaiyun-copper);
            margin-bottom: 16px;
        }

        .eyebrow::before {
            content: '';
            width: 28px;
            height: 1px;
            background: var(--kaiyun-copper);
            display: inline-block;
        }

        .btn-kaiyun {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 28px;
            border-radius: var(--kaiyun-radius-btn);
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.98rem;
            line-height: 1.4;
            text-align: center;
            border: 1px solid transparent;
            transition: all var(--kaiyun-transition);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-kaiyun-primary {
            background-color: var(--kaiyun-copper);
            color: #FFFFFF;
            border-color: var(--kaiyun-copper);
        }

        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:active,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-copper-dark);
            border-color: var(--kaiyun-copper-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(185, 120, 58, 0.22);
        }

        .btn-kaiyun-outline {
            background-color: transparent;
            color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
        }

        .btn-kaiyun-outline:hover,
        .btn-kaiyun-outline:active,
        .btn-kaiyun-outline:focus {
            background-color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .btn-kaiyun-light {
            background-color: #FFFFFF;
            color: var(--kaiyun-black);
            border-color: #FFFFFF;
        }

        .btn-kaiyun-light:hover {
            background-color: var(--kaiyun-copper);
            border-color: var(--kaiyun-copper);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .badge-kaiyun {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            background-color: var(--kaiyun-soft);
            color: var(--kaiyun-black);
            border: 1px solid var(--kaiyun-border);
        }

        .badge-kaiyun.copper {
            background-color: rgba(185, 120, 58, 0.12);
            color: var(--kaiyun-copper-dark);
            border-color: rgba(185, 120, 58, 0.25);
        }

        .card-kaiyun {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition), border-color var(--kaiyun-transition);
            overflow: hidden;
        }

        .card-kaiyun:hover {
            transform: translateY(-6px);
            box-shadow: var(--kaiyun-shadow-hover);
            border-color: rgba(185, 120, 58, 0.25);
        }

        .card-kaiyun .card-img-top {
            border-top-left-radius: var(--kaiyun-radius-card);
            border-top-right-radius: var(--kaiyun-radius-card);
            height: 220px;
            object-fit: cover;
            transition: transform 260ms ease;
        }

        .card-kaiyun:hover .card-img-top {
            transform: scale(1.03);
        }

        .card-kaiyun .card-body {
            padding: 24px 26px 26px;
        }

        .card-kaiyun .card-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .card-kaiyun .card-text {
            font-size: 0.95rem;
            color: var(--kaiyun-sage);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .icon-box {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: var(--kaiyun-soft);
            color: var(--kaiyun-copper-dark);
            font-size: 1.5rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }

        .navbar-kaiyun {
            background-color: rgba(245, 242, 236, 0.96);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--kaiyun-border);
            padding: 0;
            height: 70px;
            transition: box-shadow var(--kaiyun-transition);
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .navbar-kaiyun .navbar-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.55rem;
            color: var(--kaiyun-black);
            letter-spacing: 0.06em;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            margin-right: 2rem;
        }

        .navbar-kaiyun .navbar-brand:hover {
            color: var(--kaiyun-copper);
        }

        .navbar-kaiyun .navbar-nav {
            gap: 6px;
        }

        .navbar-kaiyun .navbar-nav .nav-link {
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--kaiyun-black);
            padding: 10px 16px !important;
            border-radius: 12px;
            transition: all var(--kaiyun-transition);
        }

        .navbar-kaiyun .navbar-nav .nav-link:hover,
        .navbar-kaiyun .navbar-nav .nav-link.active {
            background-color: var(--kaiyun-soft);
            color: var(--kaiyun-copper-dark);
        }

        .navbar-kaiyun .search-wrap {
            display: flex;
            align-items: center;
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 999px;
            padding: 6px 14px;
            margin-right: 14px;
            min-width: 190px;
        }

        .navbar-kaiyun .search-wrap input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.9rem;
            color: var(--kaiyun-black);
            width: 100%;
        }

        .navbar-kaiyun .search-wrap input::placeholder {
            color: #A9A69E;
        }

        .navbar-kaiyun .search-wrap i {
            color: var(--kaiyun-sage);
            font-size: 1rem;
            margin-right: 8px;
        }

        .navbar-kaiyun .navbar-toggler {
            border: none;
            color: var(--kaiyun-black);
            font-size: 1.5rem;
            padding: 6px 10px;
        }

        .navbar-kaiyun .navbar-toggler:focus {
            box-shadow: none;
        }

        .hero-kaiyun {
            position: relative;
            min-height: 720px;
            display: flex;
            align-items: center;
            background-color: var(--kaiyun-black);
            overflow: hidden;
            margin-bottom: 0;
        }

        .hero-kaiyun .hero-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.55;
            transition: transform 1.2s ease;
            animation: slowZoom 18s ease-in-out infinite;
        }

        @keyframes slowZoom {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        .hero-kaiyun::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(25, 27, 31, 0.92) 0%, rgba(25, 27, 31, 0.65) 50%, rgba(25, 27, 31, 0.4) 100%);
            z-index: 1;
        }

        .hero-kaiyun .container-custom {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .hero-kaiyun .hero-content {
            max-width: 660px;
            padding: 50px 0;
        }

        .hero-kaiyun h1 {
            font-size: clamp(2.5rem, 5vw, 3.8rem);
            color: #FFFFFF;
            margin-bottom: 24px;
            font-weight: 900;
        }

        .hero-kaiyun .hero-desc {
            font-size: 1.15rem;
            line-height: 2;
            color: rgba(245, 242, 236, 0.82);
            max-width: 600px;
            margin-bottom: 34px;
        }

        .hero-kaiyun .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }

        .hero-kaiyun .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            border-top: 1px solid rgba(245, 242, 236, 0.22);
            padding-top: 28px;
        }

        .hero-kaiyun .trust-item {
            display: flex;
            flex-direction: column;
        }

        .hero-kaiyun .trust-item .num {
            font-family: var(--font-ui);
            font-weight: 700;
            font-size: 1.6rem;
            color: #FFFFFF;
            line-height: 1.2;
        }

        .hero-kaiyun .trust-item .label {
            font-size: 0.85rem;
            color: rgba(245, 242, 236, 0.7);
            letter-spacing: 0.04em;
        }

        .hero-play-btn {
            position: absolute;
            z-index: 3;
            right: 8%;
            top: 50%;
            transform: translateY(-50%);
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFF;
            font-size: 2rem;
            cursor: pointer;
            transition: all var(--kaiyun-transition);
            backdrop-filter: blur(8px);
        }

        .hero-play-btn:hover {
            background: var(--kaiyun-copper);
            border-color: var(--kaiyun-copper);
            transform: translateY(-50%) scale(1.05);
        }

        .search-entry-bar {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 999px;
            padding: 6px 8px 6px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--kaiyun-shadow-soft);
            margin-top: -32px;
            position: relative;
            z-index: 10;
        }

        .search-entry-bar .search-text {
            color: #A9A69E;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
        }

        .search-entry-bar .search-tags {
            display: flex;
            gap: 10px;
            overflow-x: auto;
            scrollbar-width: none;
            padding: 6px 0;
        }

        .search-entry-bar .search-tags .tag-chip {
            background: var(--kaiyun-soft);
            border-radius: 999px;
            padding: 5px 16px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--kaiyun-black);
            white-space: nowrap;
            border: 1px solid var(--kaiyun-border);
            transition: all var(--kaiyun-transition);
            cursor: default;
        }

        .search-entry-bar .search-tags .tag-chip:hover {
            background: rgba(185, 120, 58, 0.1);
            color: var(--kaiyun-copper-dark);
            border-color: rgba(185, 120, 58, 0.3);
        }

        .search-entry-bar .btn-micro {
            background: var(--kaiyun-black);
            color: #FFF;
            border-radius: 999px;
            padding: 8px 20px;
            font-size: 0.9rem;
            border: none;
            white-space: nowrap;
            transition: all var(--kaiyun-transition);
        }

        .search-entry-bar .btn-micro:hover {
            background: var(--kaiyun-copper);
            color: #FFF;
        }

        .selling-points-grid {
            display: grid;
            grid-template-columns: 5fr 4fr 3fr;
            gap: 2rem;
        }

        .selling-points-grid .point-item {
            padding: 32px 28px;
            background: #FFFFFF;
            border-radius: var(--kaiyun-radius-card);
            border: 1px solid var(--kaiyun-border);
            box-shadow: var(--kaiyun-shadow-soft);
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
        }

        .selling-points-grid .point-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--kaiyun-shadow-hover);
        }

        .point-number {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 2.2rem;
            color: rgba(185, 120, 58, 0.35);
            line-height: 1;
            margin-bottom: 20px;
        }

        .point-title {
            font-family: var(--font-serif);
            font-size: 1.45rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .point-desc {
            color: var(--kaiyun-sage);
            font-size: 0.98rem;
            line-height: 1.8;
        }

        .scene-panel {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 2.5rem;
            align-items: center;
        }

        .scene-panel .scene-image {
            border-radius: var(--kaiyun-radius-card);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-soft);
        }

        .scene-panel .scene-image img {
            width: 100%;
            height: 440px;
            object-fit: cover;
            transition: transform 300ms ease;
        }

        .scene-panel .scene-image:hover img {
            transform: scale(1.02);
        }

        .scene-list {
            list-style: none;
            padding: 0;
            margin: 20px 0 0;
        }

        .scene-list li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 14px 0;
            border-bottom: 1px solid var(--kaiyun-border);
        }

        .scene-list li:last-child {
            border-bottom: none;
        }

        .scene-list li i {
            color: var(--kaiyun-copper);
            font-size: 1.35rem;
            margin-top: 4px;
        }

        .scene-list li span {
            font-size: 0.98rem;
            color: var(--kaiyun-black);
            line-height: 1.6;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .category-card {
            background: #FFFFFF;
            border-radius: var(--kaiyun-radius-card);
            border: 1px solid var(--kaiyun-border);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-soft);
            transition: all var(--kaiyun-transition);
            text-decoration: none;
            color: var(--kaiyun-black);
            display: block;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--kaiyun-shadow-hover);
            color: var(--kaiyun-black);
        }

        .category-card img {
            height: 180px;
            width: 100%;
            object-fit: cover;
            transition: transform 260ms ease;
        }

        .category-card:hover img {
            transform: scale(1.03);
        }

        .category-card .cat-body {
            padding: 22px 24px;
        }

        .category-card .cat-title {
            font-size: 1.18rem;
            font-weight: 700;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .category-card .cat-meta {
            font-size: 0.88rem;
            color: var(--kaiyun-sage);
        }

        .product-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.75rem;
        }

        .product-card {
            background: #FFFFFF;
            border-radius: var(--kaiyun-radius-card);
            border: 1px solid var(--kaiyun-border);
            box-shadow: var(--kaiyun-shadow-soft);
            overflow: hidden;
            transition: all var(--kaiyun-transition);
        }

        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--kaiyun-shadow-hover);
        }

        .product-card img {
            height: 210px;
            width: 100%;
            object-fit: cover;
        }

        .product-card .prod-body {
            padding: 20px 22px 22px;
        }

        .product-card .prod-tag {
            font-size: 0.75rem;
            font-weight: 500;
            color: var(--kaiyun-copper-dark);
            background: rgba(185, 120, 58, 0.1);
            border-radius: 999px;
            padding: 3px 10px;
            display: inline-block;
            margin-bottom: 10px;
        }

        .product-card .prod-name {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .product-card .prod-desc {
            font-size: 0.88rem;
            color: var(--kaiyun-sage);
            min-height: 48px;
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .product-card .prod-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--kaiyun-border);
            padding-top: 14px;
        }

        .product-card .prod-price {
            font-family: var(--font-ui);
            font-weight: 700;
            color: var(--kaiyun-copper-dark);
            font-size: 1.1rem;
        }

        .social-proof-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 2.5rem;
            align-items: center;
        }

        .social-proof-grid .rating-overview {
            background: #FFFFFF;
            padding: 32px;
            border-radius: var(--kaiyun-radius-card);
            border: 1px solid var(--kaiyun-border);
            box-shadow: var(--kaiyun-shadow-soft);
        }

        .rating-overview .rating-number {
            font-family: var(--font-ui);
            font-weight: 700;
            font-size: 3rem;
            color: var(--kaiyun-copper-dark);
            line-height: 1;
            margin-bottom: 8px;
        }

        .rating-overview .stars {
            color: var(--kaiyun-copper);
            font-size: 1.2rem;
            margin-bottom: 12px;
        }

        .testimonial-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .testimonial-item {
            background: #FFFFFF;
            padding: 22px 24px;
            border-radius: 18px;
            border: 1px solid var(--kaiyun-border);
            box-shadow: var(--kaiyun-shadow-soft);
        }

        .testimonial-item .quote {
            font-size: 0.98rem;
            color: var(--kaiyun-black);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        .testimonial-item .author {
            font-size: 0.85rem;
            color: var(--kaiyun-sage);
            letter-spacing: 0.03em;
        }

        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .comparison-col {
            border-radius: var(--kaiyun-radius-card);
            padding: 28px 26px;
            border: 1px solid var(--kaiyun-border);
        }

        .comparison-col.highlight {
            background: var(--kaiyun-black);
            color: #FFF;
            border-color: var(--kaiyun-black);
        }

        .comparison-col.highlight h3 {
            color: #FFF;
        }

        .comparison-col h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .comparison-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .comparison-col ul li {
            padding: 12px 0;
            border-bottom: 1px solid rgba(185, 120, 58, 0.18);
            display: flex;
            gap: 12px;
            align-items: flex-start;
            font-size: 0.98rem;
            color: var(--kaiyun-sage);
        }

        .comparison-col.highlight ul li {
            color: rgba(245, 242, 236, 0.8);
            border-bottom-color: rgba(245, 242, 236, 0.12);
        }

        .comparison-col ul li i {
            color: var(--kaiyun-copper);
            font-size: 1.15rem;
            margin-top: 3px;
        }

        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .article-card {
            background: #FFFFFF;
            border-radius: var(--kaiyun-radius-card);
            border: 1px solid var(--kaiyun-border);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-soft);
            transition: all var(--kaiyun-transition);
        }

        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--kaiyun-shadow-hover);
        }

        .article-card img {
            height: 180px;
            width: 100%;
            object-fit: cover;
        }

        .article-card .article-body {
            padding: 22px 24px;
        }

        .article-card .article-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .article-card .article-excerpt {
            font-size: 0.9rem;
            color: var(--kaiyun-sage);
            margin-bottom: 14px;
        }

        .article-card .article-meta {
            font-size: 0.8rem;
            color: #A9A69E;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .brand-intro {
            background: #FFFFFF;
            border-radius: var(--kaiyun-radius-card);
            padding: 48px 50px;
            border: 1px solid var(--kaiyun-border);
            box-shadow: var(--kaiyun-shadow-soft);
        }

        .brand-intro h2 {
            font-size: 2rem;
            font-weight: 900;
            margin-bottom: 24px;
        }

        .brand-intro p {
            font-size: 1.05rem;
            line-height: 2.1;
            color: var(--kaiyun-sage);
            margin-bottom: 18px;
        }

        .brand-intro .brand-highlight {
            color: var(--kaiyun-copper-dark);
            font-weight: 600;
        }

        .faq-accordion .accordion-item {
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px !important;
            margin-bottom: 16px;
            overflow: hidden;
            background: #FFFFFF;
        }

        .faq-accordion .accordion-button {
            background: #FFFFFF;
            font-family: var(--font-sans);
            font-weight: 600;
            font-size: 1rem;
            color: var(--kaiyun-black);
            padding: 20px 24px;
            box-shadow: none;
            border-radius: 16px !important;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: #FFFFFF;
            color: var(--kaiyun-copper-dark);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--kaiyun-copper);
        }

        .faq-accordion .accordion-body {
            padding: 4px 24px 22px;
            color: var(--kaiyun-sage);
            line-height: 1.85;
            font-size: 0.98rem;
        }

        .timeline-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            justify-content: space-between;
            position: relative;
        }

        .timeline-steps::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 0;
            right: 0;
            height: 1px;
            background: var(--kaiyun-border);
            z-index: 0;
        }

        .timeline-step {
            position: relative;
            z-index: 1;
            flex: 1;
            min-width: 180px;
            text-align: center;
            padding: 0 12px;
        }

        .timeline-step .step-dot {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: #FFFFFF;
            border: 2px solid var(--kaiyun-copper);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--kaiyun-copper-dark);
            margin: 0 auto 18px;
            transition: all var(--kaiyun-transition);
        }

        .timeline-step:hover .step-dot {
            background: var(--kaiyun-copper);
            color: #FFF;
            transform: scale(1.05);
        }

        .timeline-step h5 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .timeline-step p {
            font-size: 0.9rem;
            color: var(--kaiyun-sage);
        }

        .bottom-guarantee {
            background: #FFFFFF;
            border-radius: var(--kaiyun-radius-card);
            padding: 24px 28px;
            border: 1px solid var(--kaiyun-border);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            box-shadow: var(--kaiyun-shadow-soft);
        }

        .bottom-guarantee .guarantee-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--kaiyun-black);
        }

        .bottom-guarantee .guarantee-item i {
            font-size: 1.4rem;
            color: var(--kaiyun-copper);
        }

        .fixed-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--kaiyun-black);
            color: #FFF;
            padding: 14px 0;
            box-shadow: 0 -10px 30px rgba(25, 27, 31, 0.18);
            transform: translateY(100%);
            transition: transform 300ms ease;
        }

        .fixed-bottom-bar.visible {
            transform: translateY(0);
        }

        .fixed-bottom-bar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .fixed-bottom-bar .bar-info {
            display: flex;
            align-items: center;
            gap: 18px;
            font-size: 0.95rem;
            color: rgba(245, 242, 236, 0.85);
        }

        .fixed-bottom-bar .bar-info strong {
            color: #FFF;
            font-weight: 600;
        }

        .fixed-bottom-bar .btn-kaiyun-primary {
            background: var(--kaiyun-copper);
            border-color: var(--kaiyun-copper);
            color: #FFF;
            padding: 11px 24px;
        }

        .footer-kaiyun {
            background: var(--kaiyun-black);
            color: rgba(245, 242, 236, 0.7);
            padding: 70px 0 40px;
        }

        .footer-kaiyun h5 {
            color: #FFF;
            font-family: var(--font-sans);
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }

        .footer-kaiyun ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-kaiyun ul li {
            margin-bottom: 10px;
        }

        .footer-kaiyun ul li a {
            color: rgba(245, 242, 236, 0.62);
            font-size: 0.9rem;
            transition: color var(--kaiyun-transition);
        }

        .footer-kaiyun ul li a:hover {
            color: #FFF;
        }

        .footer-kaiyun .footer-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.8rem;
            color: #FFF;
            margin-bottom: 16px;
        }

        .footer-kaiyun .footer-bottom {
            border-top: 1px solid rgba(245, 242, 236, 0.12);
            margin-top: 48px;
            padding-top: 28px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: rgba(245, 242, 236, 0.5);
        }

        .footer-kaiyun .footer-bottom a {
            color: rgba(245, 242, 236, 0.6);
            margin-right: 12px;
        }

        .footer-kaiyun .footer-bottom a:hover {
            color: #FFF;
        }

        .fade-up-scroll {
            opacity: 0;
            transform: translateY(12px);
            transition: opacity 500ms ease, transform 500ms ease;
        }

        .fade-up-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .counter-number {
            font-family: var(--font-ui);
            font-variant-numeric: tabular-nums;
        }

        @media (max-width: 1199.98px) {
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 991.98px) {
            .selling-points-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scene-panel {
                grid-template-columns: 1fr;
            }
            .social-proof-grid {
                grid-template-columns: 1fr;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .navbar-kaiyun .search-wrap {
                display: none;
            }
            .navbar-kaiyun .navbar-nav {
                padding: 20px 0;
                gap: 4px;
            }
            .navbar-kaiyun .navbar-nav .nav-link {
                padding: 12px 16px !important;
                font-size: 1rem;
            }
            .hero-play-btn {
                right: 6%;
                width: 60px;
                height: 60px;
                font-size: 1.5rem;
            }
            .hero-kaiyun {
                min-height: 620px;
            }
        }

        @media (max-width: 767.98px) {
            .section-kaiyun {
                padding: 56px 0;
            }
            .hero-kaiyun {
                min-height: auto;
                padding: 70px 0;
            }
            .hero-kaiyun .hero-content {
                padding: 30px 0;
            }
            .hero-kaiyun h1 {
                font-size: 2rem;
            }
            .selling-points-grid {
                grid-template-columns: 1fr;
            }
            .product-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .brand-intro {
                padding: 30px 24px;
            }
            .hero-play-btn {
                display: none;
            }
            .search-entry-bar {
                flex-direction: column;
                align-items: stretch;
                border-radius: 22px;
                padding: 12px;
                margin-top: -24px;
            }
            .search-entry-bar .search-tags {
                overflow-x: auto;
            }
            .fixed-bottom-bar .container-custom {
                flex-direction: column;
                align-items: stretch;
                text-align: center;
                gap: 10px;
            }
            .fixed-bottom-bar .bar-info {
                justify-content: center;
                flex-wrap: wrap;
                font-size: 0.85rem;
            }
            .bottom-guarantee {
                flex-direction: column;
                align-items: flex-start;
            }
            .timeline-steps {
                flex-direction: column;
                align-items: center;
            }
            .timeline-steps::before {
                display: none;
            }
            .timeline-step {
                width: 100%;
                margin-bottom: 28px;
            }
        }

        @media (max-width: 520px) {
            .hero-kaiyun h1 {
                font-size: 1.7rem;
            }
            .btn-kaiyun {
                padding: 11px 20px;
                font-size: 0.9rem;
            }
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-card img {
                height: 150px;
            }
            .product-card img {
                height: 180px;
            }
            .article-card img {
                height: 160px;
            }
        }

/* roulang page: category1 */
:root {
            --kaiyun-black: #191B1F;
            --kaiyun-bone: #F5F2EC;
            --kaiyun-copper: #B9783A;
            --kaiyun-copper-dark: #9A5F2E;
            --kaiyun-sage: #6C7770;
            --kaiyun-border: #E8E0D4;
            --kaiyun-white: #FFFFFF;
            --kaiyun-soft: #EDE7DD;
            --kaiyun-radius-card: 22px;
            --kaiyun-radius-btn: 999px;
            --kaiyun-shadow-soft: 0 10px 30px rgba(25, 27, 31, 0.06);
            --kaiyun-shadow-hover: 0 22px 45px rgba(25, 27, 31, 0.12);
            --kaiyun-transition: 200ms ease;
            --kaiyun-section-padding: 96px 0;
            --kaiyun-container-max: 1200px;
            --kaiyun-gutter: 2rem;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-ui: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--kaiyun-bone);
            color: var(--kaiyun-black);
            font-size: 16px;
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            overflow-x: hidden;
        }

        a {
            color: var(--kaiyun-black);
            text-decoration: none;
            transition: color var(--kaiyun-transition);
        }

        a:hover {
            color: var(--kaiyun-copper);
            text-decoration: none;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: 2px;
            border-radius: 4px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-serif);
            font-weight: 700;
            color: var(--kaiyun-black);
            line-height: 1.3;
            margin-top: 0;
        }

        .container-custom {
            max-width: var(--kaiyun-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-kaiyun {
            padding: var(--kaiyun-section-padding);
            position: relative;
        }

        .section-kaiyun.alt {
            background-color: #FFFFFF;
        }

        .section-kaiyun.dark {
            background-color: var(--kaiyun-black);
            color: #F2EEE8;
        }

        .section-kaiyun.dark h2,
        .section-kaiyun.dark h3,
        .section-kaiyun.dark h4 {
            color: #FFFFFF;
        }

        .section-kaiyun.dark p {
            color: rgba(245, 242, 236, 0.72);
        }

        .section-kaiyun.dark .text-sage {
            color: rgba(245, 242, 236, 0.6) !important;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.85rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--kaiyun-copper);
            margin-bottom: 16px;
        }

        .eyebrow::before {
            content: '';
            width: 28px;
            height: 1px;
            background: var(--kaiyun-copper);
            display: inline-block;
        }

        .text-sage {
            color: var(--kaiyun-sage);
        }

        .btn-kaiyun {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 28px;
            border-radius: var(--kaiyun-radius-btn);
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.98rem;
            line-height: 1.4;
            text-align: center;
            border: 1px solid transparent;
            transition: all var(--kaiyun-transition);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-kaiyun-primary {
            background-color: var(--kaiyun-copper);
            color: #FFFFFF;
            border-color: var(--kaiyun-copper);
        }

        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:active,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-copper-dark);
            border-color: var(--kaiyun-copper-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(185, 120, 58, 0.22);
        }

        .btn-kaiyun-outline {
            background-color: transparent;
            color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
        }

        .btn-kaiyun-outline:hover,
        .btn-kaiyun-outline:active,
        .btn-kaiyun-outline:focus {
            background-color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .btn-kaiyun-light {
            background-color: #FFFFFF;
            color: var(--kaiyun-black);
            border-color: #FFFFFF;
        }

        .btn-kaiyun-light:hover {
            background-color: var(--kaiyun-copper);
            border-color: var(--kaiyun-copper);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .badge-kaiyun {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            background-color: var(--kaiyun-soft);
            color: var(--kaiyun-black);
            border: 1px solid var(--kaiyun-border);
        }

        .badge-kaiyun.copper {
            background-color: rgba(185, 120, 58, 0.12);
            color: var(--kaiyun-copper-dark);
            border-color: rgba(185, 120, 58, 0.25);
        }

        .card-kaiyun {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            overflow: hidden;
        }

        .card-kaiyun:hover {
            transform: translateY(-5px);
            box-shadow: var(--kaiyun-shadow-hover);
        }

        .card-kaiyun .card-img-wrap {
            overflow: hidden;
            aspect-ratio: 4 / 3;
            background-color: var(--kaiyun-soft);
        }

        .card-kaiyun .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }

        .card-kaiyun:hover .card-img-wrap img {
            transform: scale(1.03);
        }

        .card-kaiyun .card-body {
            padding: 20px 24px 24px;
        }

        .card-kaiyun .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            font-family: var(--font-serif);
            margin-bottom: 8px;
            color: var(--kaiyun-black);
        }

        .card-kaiyun .card-text {
            font-size: 0.92rem;
            color: var(--kaiyun-sage);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        /* Navbar */
        .navbar-kaiyun {
            position: sticky;
            top: 0;
            z-index: 1030;
            background-color: rgba(245, 242, 236, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--kaiyun-border);
            padding: 0;
            min-height: 68px;
            transition: box-shadow var(--kaiyun-transition), background-color var(--kaiyun-transition);
        }

        .navbar-kaiyun .navbar-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.5rem;
            color: var(--kaiyun-black);
            letter-spacing: 0.04em;
            padding: 0;
            margin-right: 32px;
            transition: color var(--kaiyun-transition);
        }

        .navbar-kaiyun .navbar-brand:hover {
            color: var(--kaiyun-copper);
        }

        .navbar-kaiyun .navbar-nav .nav-link {
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--kaiyun-black);
            padding: 22px 14px;
            position: relative;
            letter-spacing: 0.02em;
            transition: color var(--kaiyun-transition);
        }

        .navbar-kaiyun .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--kaiyun-copper);
            transition: width var(--kaiyun-transition);
        }

        .navbar-kaiyun .navbar-nav .nav-link:hover,
        .navbar-kaiyun .navbar-nav .nav-link.active {
            color: var(--kaiyun-copper);
        }

        .navbar-kaiyun .navbar-nav .nav-link:hover::after,
        .navbar-kaiyun .navbar-nav .nav-link.active::after {
            width: 60%;
        }

        .search-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
            background-color: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 999px;
            padding: 8px 16px;
            margin-right: 12px;
            transition: border-color var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            min-width: 180px;
        }

        .search-wrap:focus-within {
            border-color: var(--kaiyun-copper);
            box-shadow: 0 0 0 3px rgba(185, 120, 58, 0.12);
        }

        .search-wrap i {
            color: var(--kaiyun-sage);
            font-size: 0.9rem;
        }

        .search-wrap input {
            border: none;
            outline: none;
            background: transparent;
            font-family: var(--font-ui);
            font-size: 0.85rem;
            color: var(--kaiyun-black);
            width: 100%;
        }

        .search-wrap input::placeholder {
            color: var(--kaiyun-sage);
        }

        .navbar-toggler {
            border: none;
            color: var(--kaiyun-black);
            font-size: 1.4rem;
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            border-radius: 8px;
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: 2px;
        }

        /* Breadcrumb */
        .breadcrumb-kaiyun {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            gap: 4px;
            font-size: 0.82rem;
            color: var(--kaiyun-sage);
        }

        .breadcrumb-kaiyun li {
            display: flex;
            align-items: center;
        }

        .breadcrumb-kaiyun li:not(:last-child)::after {
            content: '›';
            margin: 0 8px;
            color: var(--kaiyun-sage);
        }

        .breadcrumb-kaiyun a {
            color: var(--kaiyun-sage);
            transition: color var(--kaiyun-transition);
        }

        .breadcrumb-kaiyun a:hover {
            color: var(--kaiyun-copper);
        }

        .breadcrumb-kaiyun .current {
            color: var(--kaiyun-copper);
            font-weight: 500;
        }

        /* Filter bar */
        .filter-bar {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            padding: 18px 22px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .filter-tag {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.84rem;
            font-weight: 500;
            border: 1px solid var(--kaiyun-border);
            background: #FFFFFF;
            color: var(--kaiyun-black);
            cursor: pointer;
            transition: all var(--kaiyun-transition);
            white-space: nowrap;
        }

        .filter-tag:hover,
        .filter-tag.active {
            background-color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
            color: #FFFFFF;
        }

        .filter-select {
            padding: 8px 16px;
            border-radius: 999px;
            border: 1px solid var(--kaiyun-border);
            background: #FFFFFF;
            font-family: var(--font-ui);
            font-size: 0.84rem;
            color: var(--kaiyun-black);
            cursor: pointer;
            transition: border-color var(--kaiyun-transition);
        }

        .filter-select:focus {
            border-color: var(--kaiyun-copper);
            outline: none;
            box-shadow: 0 0 0 3px rgba(185, 120, 58, 0.12);
        }

        /* Brand list card */
        .brand-list-card {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            overflow: hidden;
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            height: 100%;
        }

        .brand-list-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--kaiyun-shadow-hover);
        }

        .brand-list-card .brand-img-wrap {
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background-color: var(--kaiyun-soft);
            position: relative;
        }

        .brand-list-card .brand-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }

        .brand-list-card:hover .brand-img-wrap img {
            transform: scale(1.03);
        }

        .brand-list-card .brand-img-wrap .brand-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
        }

        .brand-list-card .brand-card-body {
            padding: 20px 24px 24px;
        }

        .brand-list-card .brand-name {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 4px;
            color: var(--kaiyun-black);
        }

        .brand-list-card .brand-origin {
            font-size: 0.82rem;
            color: var(--kaiyun-sage);
            margin-bottom: 10px;
        }

        .brand-list-card .brand-desc {
            font-size: 0.9rem;
            color: var(--kaiyun-sage);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .brand-list-card .brand-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--kaiyun-sage);
            border-top: 1px solid var(--kaiyun-border);
            padding-top: 14px;
        }

        .brand-list-card .brand-meta i {
            color: var(--kaiyun-copper);
            margin-right: 4px;
        }

        /* Numbered list */
        .num-rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px;
            margin-bottom: 12px;
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
        }

        .num-rank-item:hover {
            transform: translateX(4px);
            box-shadow: var(--kaiyun-shadow-soft);
        }

        .num-rank-item .rank-no {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.6rem;
            color: var(--kaiyun-copper);
            width: 48px;
            text-align: center;
            flex-shrink: 0;
        }

        .num-rank-item .rank-thumb {
            width: 64px;
            height: 64px;
            border-radius: 14px;
            overflow: hidden;
            flex-shrink: 0;
        }

        .num-rank-item .rank-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .num-rank-item .rank-info {
            flex: 1;
            min-width: 0;
        }

        .num-rank-item .rank-title {
            font-weight: 700;
            font-size: 0.98rem;
            font-family: var(--font-serif);
            color: var(--kaiyun-black);
            margin-bottom: 2px;
        }

        .num-rank-item .rank-sub {
            font-size: 0.82rem;
            color: var(--kaiyun-sage);
        }

        /* Guide section */
        .guide-block {
            border-radius: var(--kaiyun-radius-card);
            overflow: hidden;
            border: 1px solid var(--kaiyun-border);
            background: #FFFFFF;
            box-shadow: var(--kaiyun-shadow-soft);
        }

        .guide-block .guide-img {
            min-height: 320px;
            height: 100%;
        }

        .guide-block .guide-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .guide-block .guide-body {
            padding: 36px 40px;
        }

        .guide-block .guide-body h3 {
            font-size: 1.6rem;
            margin-bottom: 16px;
        }

        .guide-block .guide-body p {
            color: var(--kaiyun-sage);
            line-height: 1.85;
            margin-bottom: 16px;
        }

        /* Promise items */
        .promise-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 16px;
        }

        .promise-item {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px;
            padding: 22px 24px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
        }

        .promise-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--kaiyun-shadow-soft);
        }

        .promise-item .promise-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(185, 120, 58, 0.1);
            color: var(--kaiyun-copper);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }

        .promise-item .promise-title {
            font-weight: 700;
            font-size: 0.95rem;
            font-family: var(--font-serif);
            color: var(--kaiyun-black);
            margin-bottom: 4px;
        }

        .promise-item .promise-desc {
            font-size: 0.84rem;
            color: var(--kaiyun-sage);
            line-height: 1.7;
        }

        /* FAQ */
        .accordion-kaiyun {
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            overflow: hidden;
            background: #FFFFFF;
            box-shadow: var(--kaiyun-shadow-soft);
        }

        .accordion-kaiyun .accordion-item {
            border: none;
            border-bottom: 1px solid var(--kaiyun-border);
            background: transparent;
        }

        .accordion-kaiyun .accordion-item:last-child {
            border-bottom: none;
        }

        .accordion-kaiyun .accordion-button {
            background: transparent;
            color: var(--kaiyun-black);
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1rem;
            padding: 20px 28px;
            box-shadow: none;
            border: none;
        }

        .accordion-kaiyun .accordion-button:not(.collapsed) {
            background: rgba(185, 120, 58, 0.06);
            color: var(--kaiyun-copper-dark);
            box-shadow: none;
        }

        .accordion-kaiyun .accordion-button:focus {
            box-shadow: none;
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: -3px;
        }

        .accordion-kaiyun .accordion-button::after {
            content: '\F282';
            font-family: 'bootstrap-icons';
            color: var(--kaiyun-copper);
            font-size: 0.9rem;
            transition: transform var(--kaiyun-transition);
        }

        .accordion-kaiyun .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .accordion-kaiyun .accordion-body {
            padding: 20px 28px 28px;
            color: var(--kaiyun-sage);
            font-size: 0.92rem;
            line-height: 1.8;
        }

        /* News cards */
        .news-card {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px;
            overflow: hidden;
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            height: 100%;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--kaiyun-shadow-soft);
        }

        .news-card .news-img-wrap {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--kaiyun-soft);
        }

        .news-card .news-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }

        .news-card:hover .news-img-wrap img {
            transform: scale(1.03);
        }

        .news-card .news-body {
            padding: 18px 22px 22px;
        }

        .news-card .news-title {
            font-weight: 700;
            font-size: 0.98rem;
            font-family: var(--font-serif);
            color: var(--kaiyun-black);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .news-card .news-date {
            font-size: 0.78rem;
            color: var(--kaiyun-sage);
            margin-bottom: 8px;
        }

        .news-card .news-excerpt {
            font-size: 0.84rem;
            color: var(--kaiyun-sage);
            line-height: 1.7;
        }

        /* Footer */
        .footer-kaiyun {
            background-color: var(--kaiyun-black);
            color: #F2EEE8;
            padding: 64px 0 32px;
            margin-top: 0;
        }

        .footer-kaiyun .footer-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.5rem;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .footer-kaiyun h5 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1rem;
            color: #FFFFFF;
            margin-bottom: 18px;
        }

        .footer-kaiyun ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-kaiyun ul li {
            margin-bottom: 10px;
        }

        .footer-kaiyun ul li a {
            color: rgba(245, 242, 236, 0.6);
            font-size: 0.9rem;
            transition: color var(--kaiyun-transition);
        }

        .footer-kaiyun ul li a:hover {
            color: var(--kaiyun-copper);
        }

        .footer-kaiyun .footer-bottom {
            border-top: 1px solid rgba(245, 242, 236, 0.15);
            margin-top: 40px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(245, 242, 236, 0.4);
        }

        .footer-kaiyun .footer-bottom a {
            color: rgba(245, 242, 236, 0.4);
            margin-left: 16px;
            transition: color var(--kaiyun-transition);
        }

        .footer-kaiyun .footer-bottom a:hover {
            color: var(--kaiyun-copper);
        }

        /* Fixed bottom conversion bar */
        .fixed-bottom-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1020;
            background-color: var(--kaiyun-black);
            color: #F2EEE8;
            padding: 14px 0;
            border-top: 1px solid rgba(245, 242, 236, 0.1);
            transform: translateY(100%);
            transition: transform 400ms ease;
        }

        .fixed-bottom-cta.visible {
            transform: translateY(0);
        }

        .fixed-bottom-cta .cta-text {
            font-size: 0.9rem;
            color: rgba(245, 242, 236, 0.7);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .fixed-bottom-cta .cta-text strong {
            color: #FFFFFF;
            font-weight: 700;
        }

        .fixed-bottom-cta .btn-kaiyun-primary {
            background-color: var(--kaiyun-copper);
            border-color: var(--kaiyun-copper);
            padding: 10px 24px;
            font-size: 0.9rem;
        }

        .fixed-bottom-cta .btn-kaiyun-primary:hover {
            background-color: var(--kaiyun-copper-dark);
            border-color: var(--kaiyun-copper-dark);
        }

        body.fixed-bar-visible {
            padding-bottom: 70px;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-kaiyun .navbar-collapse {
                background-color: rgba(245, 242, 236, 0.98);
                border-top: 1px solid var(--kaiyun-border);
                padding: 16px 24px;
                max-height: calc(100vh - 68px);
                overflow-y: auto;
            }

            .navbar-kaiyun .navbar-nav .nav-link {
                padding: 12px 0;
                border-bottom: 1px solid var(--kaiyun-border);
            }

            .navbar-kaiyun .navbar-nav .nav-link::after {
                display: none;
            }

            .search-wrap {
                margin: 16px 0 8px;
                min-width: auto;
                width: 100%;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --kaiyun-section-padding: 64px 0;
            }

            h1 {
                font-size: 1.75rem !important;
            }

            h2 {
                font-size: 1.5rem !important;
            }

            .guide-block .guide-body {
                padding: 24px 20px;
            }

            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                padding: 14px 16px;
            }

            .filter-tags {
                justify-content: flex-start;
            }

            .promise-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 575.98px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }

            .btn-kaiyun {
                padding: 11px 20px;
                font-size: 0.88rem;
            }

            .card-kaiyun .card-body {
                padding: 16px 18px 20px;
            }

            .brand-list-card .brand-card-body {
                padding: 16px 18px 20px;
            }

            .footer-kaiyun {
                padding: 48px 0 24px;
            }

            .footer-kaiyun .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .fixed-bottom-cta .cta-text {
                font-size: 0.82rem;
            }

            .fixed-bottom-cta .btn-kaiyun-primary {
                padding: 8px 18px;
                font-size: 0.82rem;
            }
        }

/* roulang page: category2 */
:root {
  --kaiyun-black: #191B1F;
  --kaiyun-bone: #F5F2EC;
  --kaiyun-copper: #B9783A;
  --kaiyun-copper-dark: #9A5F2E;
  --kaiyun-sage: #6C7770;
  --kaiyun-border: #E8E0D4;
  --kaiyun-white: #FFFFFF;
  --kaiyun-soft: #EDE7DD;
  --kaiyun-radius-card: 22px;
  --kaiyun-radius-btn: 999px;
  --kaiyun-shadow-soft: 0 10px 30px rgba(25, 27, 31, 0.06);
  --kaiyun-shadow-hover: 0 22px 45px rgba(25, 27, 31, 0.12);
  --kaiyun-transition: 200ms ease;
  --kaiyun-section-padding: 96px 0;
  --kaiyun-container-max: 1200px;
  --kaiyun-gutter: 2rem;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-ui: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, sans-serif;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  background-color: var(--kaiyun-bone);
  color: var(--kaiyun-black);
  font-size: 16px;
  line-height: 1.9;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a {
  color: var(--kaiyun-black);
  text-decoration: none;
  transition: color var(--kaiyun-transition);
}
a:hover {
  color: var(--kaiyun-copper);
  text-decoration: none;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--kaiyun-copper);
  outline-offset: 2px;
  border-radius: 4px;
}
.container-custom {
  max-width: var(--kaiyun-container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section-kaiyun {
  padding: var(--kaiyun-section-padding);
  position: relative;
}
.section-kaiyun.alt {
  background-color: #FFFFFF;
}
.section-kaiyun.dark {
  background-color: var(--kaiyun-black);
  color: #F2EEE8;
}
.section-kaiyun.dark h2,
.section-kaiyun.dark h3,
.section-kaiyun.dark h4,
.section-kaiyun.dark h5 {
  color: #FFFFFF;
}
.section-kaiyun.dark p {
  color: rgba(245, 242, 236, 0.72);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--kaiyun-copper);
  margin-bottom: 16px;
}
.eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--kaiyun-copper);
  display: inline-block;
}
.btn-kaiyun {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 28px;
  border-radius: var(--kaiyun-radius-btn);
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 0.98rem;
  line-height: 1.4;
  text-align: center;
  border: 1px solid transparent;
  transition: all var(--kaiyun-transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn-kaiyun-primary {
  background-color: var(--kaiyun-copper);
  color: #FFFFFF;
  border-color: var(--kaiyun-copper);
}
.btn-kaiyun-primary:hover,
.btn-kaiyun-primary:active,
.btn-kaiyun-primary:focus {
  background-color: var(--kaiyun-copper-dark);
  border-color: var(--kaiyun-copper-dark);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(185, 120, 58, 0.22);
}
.btn-kaiyun-outline {
  background-color: transparent;
  color: var(--kaiyun-black);
  border-color: var(--kaiyun-black);
}
.btn-kaiyun-outline:hover,
.btn-kaiyun-outline:active,
.btn-kaiyun-outline:focus {
  background-color: var(--kaiyun-black);
  border-color: var(--kaiyun-black);
  color: #FFFFFF;
  transform: translateY(-2px);
}
.btn-kaiyun-light {
  background-color: #FFFFFF;
  color: var(--kaiyun-black);
  border-color: #FFFFFF;
}
.btn-kaiyun-light:hover {
  background-color: var(--kaiyun-copper);
  border-color: var(--kaiyun-copper);
  color: #FFFFFF;
  transform: translateY(-2px);
}
.badge-kaiyun {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  background-color: var(--kaiyun-soft);
  color: var(--kaiyun-black);
  border: 1px solid var(--kaiyun-border);
}
.badge-kaiyun.copper {
  background-color: rgba(185, 120, 58, 0.12);
  color: var(--kaiyun-copper-dark);
  border-color: rgba(185, 120, 58, 0.25);
}
.card-kaiyun {
  background: #FFFFFF;
  border: 1px solid var(--kaiyun-border);
  border-radius: var(--kaiyun-radius-card);
  box-shadow: var(--kaiyun-shadow-soft);
  transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
}
.card-kaiyun:hover {
  transform: translateY(-6px);
  box-shadow: var(--kaiyun-shadow-hover);
}
.navbar-kaiyun {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(245, 242, 236, 0.96);
  border-bottom: 1px solid var(--kaiyun-border);
  padding: 12px 0;
  backdrop-filter: blur(8px);
}
.navbar-kaiyun .navbar-brand {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  font-weight: 900;
  color: var(--kaiyun-black);
  letter-spacing: 0.02em;
}
.navbar-kaiyun .nav-link {
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 0.96rem;
  color: var(--kaiyun-black);
  margin: 0 10px;
  padding: 6px 0 !important;
  position: relative;
  transition: color var(--kaiyun-transition);
}
.navbar-kaiyun .nav-link:hover,
.navbar-kaiyun .nav-link.active {
  color: var(--kaiyun-copper);
}
.navbar-kaiyun .nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--kaiyun-copper);
  border-radius: 2px;
}
.search-wrap {
  display: flex;
  align-items: center;
  background: #FFFFFF;
  border: 1px solid var(--kaiyun-border);
  border-radius: 999px;
  padding: 8px 16px;
  min-width: 220px;
  gap: 8px;
  transition: border-color var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
}
.search-wrap i {
  color: var(--kaiyun-sage);
  font-size: 0.95rem;
}
.search-wrap input {
  border: 0;
  outline: 0;
  background: transparent;
  width: 100%;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--kaiyun-black);
}
.search-wrap:focus-within {
  border-color: var(--kaiyun-copper);
  box-shadow: 0 0 0 4px rgba(185, 120, 58, 0.12);
}
.page-category-hero {
  position: relative;
  padding: 88px 0 72px;
  background: linear-gradient(135deg, rgba(25, 27, 31, 0.82), rgba(25, 27, 31, 0.68)), url('/assets/images/ed4f500b3108ae26.webp') center/cover no-repeat;
  color: #FFFFFF;
  border-bottom: 1px solid rgba(245, 242, 236, 0.08);
}
.page-category-hero .breadcrumb {
  --bs-breadcrumb-divider-color: rgba(245, 242, 236, 0.55);
  --bs-breadcrumb-item-active-color: #FFFFFF;
  margin-bottom: 20px;
}
.page-category-hero .breadcrumb a {
  color: rgba(245, 242, 236, 0.75);
  text-decoration: none;
}
.page-category-hero .breadcrumb a:hover {
  color: var(--kaiyun-copper);
}
.page-category-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
  color: #FFFFFF;
}
.page-category-hero p {
  max-width: 720px;
  color: rgba(245, 242, 236, 0.82);
  font-size: 1.02rem;
  line-height: 1.95;
  margin-bottom: 0;
}
.category-stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-top: 28px;
}
.category-stat {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(245, 242, 236, 0.78);
  font-size: 0.92rem;
}
.category-stat i {
  color: var(--kaiyun-copper);
}
.filter-toolbar {
  background: #FFFFFF;
  border: 1px solid var(--kaiyun-border);
  border-radius: 18px;
  padding: 18px 20px;
  box-shadow: var(--kaiyun-shadow-soft);
  margin-top: -36px;
  position: relative;
  z-index: 5;
}
.filter-toolbar .form-select,
.filter-toolbar .form-control {
  border: 1px solid var(--kaiyun-border);
  border-radius: 12px;
  background-color: #FFFFFF;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  color: var(--kaiyun-black);
  padding: 10px 14px;
}
.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-tag {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--kaiyun-border);
  background: #FFFFFF;
  font-size: 0.86rem;
  color: var(--kaiyun-black);
  transition: all var(--kaiyun-transition);
  cursor: default;
}
.filter-tag:hover,
.filter-tag.active {
  background: var(--kaiyun-black);
  border-color: var(--kaiyun-black);
  color: #FFFFFF;
}
.product-img-wrap {
  border-radius: var(--kaiyun-radius-card) var(--kaiyun-radius-card) 0 0;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--kaiyun-soft);
}
.product-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 220ms ease;
}
.card-kaiyun:hover .product-img-wrap img {
  transform: scale(1.03);
}
.product-body {
  padding: 20px 18px 22px;
}
.product-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.5;
}
.product-desc {
  font-size: 0.92rem;
  color: var(--kaiyun-sage);
  line-height: 1.75;
  margin-bottom: 14px;
}
.product-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.product-price {
  font-family: var(--font-ui);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--kaiyun-copper);
}
.product-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--kaiyun-border);
}
.rank-item:last-child {
  border-bottom: 0;
}
.rank-num {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--kaiyun-copper);
  width: 40px;
  flex-shrink: 0;
}
.rank-img {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--kaiyun-soft);
}
.rank-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.rank-info h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 2px;
}
.rank-info p {
  font-size: 0.86rem;
  color: var(--kaiyun-sage);
  margin: 0;
}
.guide-split {
  background: #FFFFFF;
  border: 1px solid var(--kaiyun-border);
  border-radius: var(--kaiyun-radius-card);
  box-shadow: var(--kaiyun-shadow-soft);
  overflow: hidden;
}
.guide-split .guide-img {
  min-height: 320px;
  background: var(--kaiyun-soft);
}
.guide-split .guide-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.guide-content {
  padding: 36px 32px;
}
.guide-content h2 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 900;
  margin-bottom: 16px;
}
.guide-content p {
  color: var(--kaiyun-sage);
  line-height: 1.95;
}
.promise-list {
  display: flex;
  flex-wrap: wrap;
  gap: 28px 40px;
}
.promise-item {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}
.promise-item i {
  font-size: 1.5rem;
  color: var(--kaiyun-copper);
}
.promise-item span {
  font-weight: 500;
}
.accordion-kaiyun .accordion-item {
  background: #FFFFFF;
  border: 1px solid var(--kaiyun-border);
  border-radius: 16px !important;
  margin-bottom: 12px;
  overflow: hidden;
}
.accordion-kaiyun .accordion-button {
  background: #FFFFFF;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1rem;
  color: var(--kaiyun-black);
  padding: 18px 22px;
}
.accordion-kaiyun .accordion-button:not(.collapsed) {
  background: #FFFFFF;
  color: var(--kaiyun-copper);
  box-shadow: none;
}
.accordion-kaiyun .accordion-button:focus {
  box-shadow: none;
  border-color: var(--kaiyun-copper);
}
.accordion-kaiyun .accordion-body {
  padding: 2px 22px 20px;
  color: var(--kaiyun-sage);
  line-height: 1.95;
}
.article-mini-card {
  background: #FFFFFF;
  border: 1px solid var(--kaiyun-border);
  border-radius: 18px;
  overflow: hidden;
  transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
  height: 100%;
}
.article-mini-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--kaiyun-shadow-hover);
}
.article-mini-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--kaiyun-soft);
}
.article-mini-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 220ms ease;
}
.article-mini-card:hover .article-mini-img img {
  transform: scale(1.02);
}
.article-mini-body {
  padding: 16px 16px 18px;
}
.article-mini-body h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 6px;
}
.article-mini-body p {
  font-size: 0.86rem;
  color: var(--kaiyun-sage);
  line-height: 1.75;
  margin: 0;
}
.article-mini-body a {
  font-weight: 500;
  color: var(--kaiyun-copper);
}
.footer-kaiyun {
  background: var(--kaiyun-black);
  color: rgba(245, 242, 236, 0.72);
  padding: 70px 0 26px;
  margin-top: 60px;
}
.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 900;
  color: #FFFFFF;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}
.footer-kaiyun h5 {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 600;
  color: #FFFFFF;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}
.footer-kaiyun ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-kaiyun ul li {
  margin-bottom: 10px;
}
.footer-kaiyun ul li a {
  color: rgba(245, 242, 236, 0.6);
  text-decoration: none;
  transition: color var(--kaiyun-transition);
}
.footer-kaiyun ul li a:hover {
  color: var(--kaiyun-copper);
}
.footer-bottom {
  border-top: 1px solid rgba(245, 242, 236, 0.12);
  margin-top: 50px;
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.82rem;
  color: rgba(245, 242, 236, 0.52);
}
.footer-bottom a {
  color: rgba(245, 242, 236, 0.6);
  text-decoration: none;
  margin-left: 12px;
}
.footer-bottom a:hover {
  color: var(--kaiyun-copper);
}
.fixed-bottom-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  background: var(--kaiyun-black);
  color: #FFFFFF;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  box-shadow: 0 -8px 26px rgba(25, 27, 31, 0.18);
  border-top: 1px solid rgba(245, 242, 236, 0.08);
}
.fixed-bottom-cta p {
  margin: 0;
  font-size: 0.92rem;
  color: rgba(245, 242, 236, 0.78);
}
body {
  padding-bottom: 76px;
}
.fade-up {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
@media (max-width: 991.98px) {
  .navbar-kaiyun .nav-link {
    margin: 2px 0;
    padding-left: 8px !important;
  }
  .navbar-kaiyun .search-wrap {
    display: none;
  }
  .page-category-hero {
    padding: 56px 0 48px;
  }
  .section-kaiyun {
    padding: 64px 0;
  }
}
@media (max-width: 767.98px) {
  .fixed-bottom-cta {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
  .guide-split .guide-content {
    padding: 24px 18px;
  }
}

/* roulang page: category3 */
:root {
            --kaiyun-black: #191B1F;
            --kaiyun-bone: #F5F2EC;
            --kaiyun-copper: #B9783A;
            --kaiyun-copper-dark: #9A5F2E;
            --kaiyun-sage: #6C7770;
            --kaiyun-border: #E8E0D4;
            --kaiyun-white: #FFFFFF;
            --kaiyun-soft: #EDE7DD;
            --kaiyun-radius-card: 22px;
            --kaiyun-radius-btn: 999px;
            --kaiyun-shadow-soft: 0 10px 30px rgba(25, 27, 31, 0.06);
            --kaiyun-shadow-hover: 0 22px 45px rgba(25, 27, 31, 0.12);
            --kaiyun-transition: 200ms ease;
            --kaiyun-section-padding: 96px 0;
            --kaiyun-container-max: 1200px;
            --kaiyun-gutter: 2rem;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-ui: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--kaiyun-bone);
            color: var(--kaiyun-black);
            font-size: 16px;
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            overflow-x: hidden;
        }
        a {
            color: var(--kaiyun-black);
            text-decoration: none;
            transition: color var(--kaiyun-transition);
        }
        a:hover {
            color: var(--kaiyun-copper);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container-custom {
            max-width: var(--kaiyun-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-kaiyun {
            padding: var(--kaiyun-section-padding);
            position: relative;
        }
        .section-kaiyun.alt {
            background-color: #FFFFFF;
        }
        .section-kaiyun.dark {
            background-color: var(--kaiyun-black);
            color: #F2EEE8;
        }
        .section-kaiyun.dark h2,
        .section-kaiyun.dark h3,
        .section-kaiyun.dark h4 {
            color: #FFFFFF;
        }
        .section-kaiyun.dark p {
            color: rgba(245, 242, 236, 0.72);
        }
        .section-kaiyun.dark .text-sage {
            color: rgba(245, 242, 236, 0.6) !important;
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.85rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--kaiyun-copper);
            margin-bottom: 16px;
        }
        .eyebrow::before {
            content: '';
            width: 28px;
            height: 1px;
            background: var(--kaiyun-copper);
            display: inline-block;
        }
        .btn-kaiyun {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 28px;
            border-radius: var(--kaiyun-radius-btn);
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.98rem;
            line-height: 1.4;
            text-align: center;
            border: 1px solid transparent;
            transition: all var(--kaiyun-transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-kaiyun-primary {
            background-color: var(--kaiyun-copper);
            color: #FFFFFF;
            border-color: var(--kaiyun-copper);
        }
        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:active,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-copper-dark);
            border-color: var(--kaiyun-copper-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(185, 120, 58, 0.22);
        }
        .btn-kaiyun-outline {
            background-color: transparent;
            color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
        }
        .btn-kaiyun-outline:hover,
        .btn-kaiyun-outline:active,
        .btn-kaiyun-outline:focus {
            background-color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .btn-kaiyun-light {
            background-color: #FFFFFF;
            color: var(--kaiyun-black);
            border-color: #FFFFFF;
        }
        .btn-kaiyun-light:hover {
            background-color: var(--kaiyun-copper);
            border-color: var(--kaiyun-copper);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .badge-kaiyun {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            background-color: var(--kaiyun-soft);
            color: var(--kaiyun-black);
            border: 1px solid var(--kaiyun-border);
        }
        .badge-kaiyun.copper {
            background-color: rgba(185, 120, 58, 0.12);
            color: var(--kaiyun-copper-dark);
            border-color: rgba(185, 120, 58, 0.25);
        }
        .badge-kaiyun.dark {
            background-color: rgba(25, 27, 31, 0.88);
            color: #F5F2EC;
            border-color: rgba(25, 27, 31, 0.6);
        }
        .card-kaiyun {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            overflow: hidden;
        }
        .card-kaiyun:hover {
            transform: translateY(-5px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .card-kaiyun .card-img-wrap {
            aspect-ratio: 4/3;
            overflow: hidden;
            background-color: var(--kaiyun-soft);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .card-kaiyun .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 240ms ease;
        }
        .card-kaiyun:hover .card-img-wrap img {
            transform: scale(1.03);
        }
        .card-kaiyun .card-body-ky {
            padding: 22px 22px 24px;
        }
        .card-kaiyun .card-title-ky {
            font-family: var(--font-serif);
            font-size: 1.12rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--kaiyun-black);
        }
        .card-kaiyun .card-text-ky {
            font-size: 0.92rem;
            color: var(--kaiyun-sage);
            line-height: 1.75;
            margin-bottom: 14px;
        }
        .card-kaiyun .card-meta-ky {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-family: var(--font-ui);
            font-size: 0.85rem;
            color: var(--kaiyun-sage);
            flex-wrap: wrap;
        }
        .price-ky {
            font-family: var(--font-ui);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--kaiyun-copper-dark);
            letter-spacing: -0.01em;
            font-variant-numeric: tabular-nums;
        }
        .price-ky small {
            font-size: 0.75rem;
            font-weight: 400;
            color: var(--kaiyun-sage);
        }
        .navbar-kaiyun {
            background-color: rgba(245, 242, 236, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--kaiyun-border);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--kaiyun-transition);
        }
        .navbar-kaiyun.scrolled {
            box-shadow: 0 8px 28px rgba(25, 27, 31, 0.08);
        }
        .navbar-kaiyun .navbar-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.45rem;
            letter-spacing: 0.04em;
            color: var(--kaiyun-black);
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            margin-right: 32px;
        }
        .navbar-kaiyun .navbar-brand:hover {
            color: var(--kaiyun-copper);
        }
        .navbar-kaiyun .navbar-brand .brand-mark {
            width: 10px;
            height: 10px;
            background-color: var(--kaiyun-copper);
            border-radius: 50%;
            display: inline-block;
            flex-shrink: 0;
        }
        .navbar-kaiyun .nav-link {
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--kaiyun-sage);
            padding: 8px 16px !important;
            border-radius: 999px;
            transition: all var(--kaiyun-transition);
            letter-spacing: 0.01em;
        }
        .navbar-kaiyun .nav-link:hover,
        .navbar-kaiyun .nav-link.active {
            color: var(--kaiyun-black);
            background-color: var(--kaiyun-soft);
        }
        .navbar-kaiyun .search-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
            background-color: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 999px;
            padding: 8px 16px;
            min-width: 220px;
            transition: border-color var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
        }
        .navbar-kaiyun .search-wrap:focus-within {
            border-color: var(--kaiyun-copper);
            box-shadow: 0 0 0 4px rgba(185, 120, 58, 0.12);
        }
        .navbar-kaiyun .search-wrap i {
            color: var(--kaiyun-sage);
            font-size: 1rem;
        }
        .navbar-kaiyun .search-wrap input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.9rem;
            color: var(--kaiyun-black);
            font-family: var(--font-ui);
            width: 100%;
        }
        .navbar-kaiyun .search-wrap input::placeholder {
            color: rgba(108, 119, 112, 0.6);
        }
        .navbar-kaiyun .navbar-toggler {
            border: 1px solid var(--kaiyun-border);
            border-radius: 12px;
            padding: 8px 12px;
            color: var(--kaiyun-black);
            background-color: #FFFFFF;
        }
        .navbar-kaiyun .navbar-toggler:focus {
            box-shadow: none;
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: 2px;
        }
        .footer-kaiyun {
            background-color: var(--kaiyun-black);
            color: #F5F2EC;
            padding: 72px 0 32px;
            margin-top: 0;
        }
        .footer-kaiyun .footer-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.6rem;
            letter-spacing: 0.05em;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .footer-kaiyun p {
            font-size: 0.9rem;
            line-height: 1.85;
            color: rgba(245, 242, 236, 0.6);
            margin-bottom: 0;
        }
        .footer-kaiyun h5 {
            font-family: var(--font-ui);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: rgba(245, 242, 236, 0.45);
            margin-bottom: 18px;
        }
        .footer-kaiyun ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-kaiyun ul li {
            margin-bottom: 12px;
        }
        .footer-kaiyun ul li a {
            font-size: 0.9rem;
            color: rgba(245, 242, 236, 0.72);
            transition: color var(--kaiyun-transition);
        }
        .footer-kaiyun ul li a:hover {
            color: var(--kaiyun-copper);
        }
        .footer-kaiyun .footer-bottom {
            border-top: 1px solid rgba(245, 242, 236, 0.15);
            margin-top: 48px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 0.82rem;
            color: rgba(245, 242, 236, 0.5);
        }
        .footer-kaiyun .footer-bottom a {
            color: rgba(245, 242, 236, 0.6);
            font-size: 0.82rem;
            transition: color var(--kaiyun-transition);
        }
        .footer-kaiyun .footer-bottom a:hover {
            color: var(--kaiyun-copper);
        }
        .page-header-ky {
            position: relative;
            padding: 72px 0 56px;
            background-image: url('/assets/images/ed4f500b3108ae26.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-bottom: 1px solid var(--kaiyun-border);
        }
        .page-header-ky::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(245, 242, 236, 0.82) 0%, rgba(245, 242, 236, 0.55) 55%, rgba(245, 242, 236, 0.92) 100%);
            z-index: 1;
            pointer-events: none;
        }
        .page-header-ky .header-inner {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-ky {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--kaiyun-sage);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb-ky a {
            color: var(--kaiyun-sage);
            transition: color var(--kaiyun-transition);
        }
        .breadcrumb-ky a:hover {
            color: var(--kaiyun-copper);
        }
        .breadcrumb-ky .separator {
            color: var(--kaiyun-border);
            font-size: 0.7rem;
        }
        .breadcrumb-ky .current {
            color: var(--kaiyun-black);
            font-weight: 500;
        }
        .page-header-ky h1 {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: clamp(30px, 4.5vw, 46px);
            line-height: 1.25;
            color: var(--kaiyun-black);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .page-header-ky .header-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-sage);
            max-width: 680px;
            line-height: 1.9;
        }
        .tier-card-ky {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            padding: 28px 24px;
            height: 100%;
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition), border-color var(--kaiyun-transition);
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .tier-card-ky:hover {
            transform: translateY(-5px);
            box-shadow: var(--kaiyun-shadow-hover);
            border-color: var(--kaiyun-copper);
        }
        .tier-card-ky .tier-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            width: fit-content;
        }
        .tier-card-ky .tier-badge.silver {
            background-color: #F0EFEC;
            color: #6C7770;
            border: 1px solid #D8D5CE;
        }
        .tier-card-ky .tier-badge.gold {
            background-color: rgba(185, 120, 58, 0.12);
            color: var(--kaiyun-copper-dark);
            border: 1px solid rgba(185, 120, 58, 0.3);
        }
        .tier-card-ky .tier-badge.diamond {
            background-color: rgba(25, 27, 31, 0.9);
            color: #F5F2EC;
            border: 1px solid rgba(25, 27, 31, 0.5);
        }
        .tier-card-ky .tier-name {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.5rem;
            margin-bottom: 6px;
            color: var(--kaiyun-black);
        }
        .tier-card-ky .tier-threshold {
            font-size: 0.88rem;
            color: var(--kaiyun-sage);
            margin-bottom: 18px;
        }
        .tier-card-ky .tier-benefits {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            flex: 1;
        }
        .tier-card-ky .tier-benefits li {
            font-size: 0.9rem;
            color: var(--kaiyun-black);
            padding: 7px 0;
            border-bottom: 1px dashed var(--kaiyun-border);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .tier-card-ky .tier-benefits li:last-child {
            border-bottom: none;
        }
        .tier-card-ky .tier-benefits li i {
            color: var(--kaiyun-copper);
            font-size: 0.85rem;
        }
        .benefit-item-ky {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 22px 0;
            border-bottom: 1px solid var(--kaiyun-border);
        }
        .benefit-item-ky:last-child {
            border-bottom: none;
        }
        .benefit-item-ky .benefit-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background-color: var(--kaiyun-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--kaiyun-copper);
        }
        .benefit-item-ky .benefit-content h4 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 6px;
            color: var(--kaiyun-black);
        }
        .benefit-item-ky .benefit-content p {
            font-size: 0.92rem;
            color: var(--kaiyun-sage);
            margin-bottom: 0;
            line-height: 1.8;
        }
        .product-card-ky {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-soft);
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .product-card-ky:hover {
            transform: translateY(-4px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .product-card-ky .product-img {
            aspect-ratio: 1/1;
            overflow: hidden;
            background-color: var(--kaiyun-soft);
            position: relative;
        }
        .product-card-ky .product-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 240ms ease;
        }
        .product-card-ky:hover .product-img img {
            transform: scale(1.04);
        }
        .product-card-ky .product-img .discount-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background-color: var(--kaiyun-copper);
            color: #FFFFFF;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.03em;
        }
        .product-card-ky .product-info {
            padding: 18px 18px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .product-card-ky .product-info h5 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.02rem;
            margin-bottom: 6px;
            color: var(--kaiyun-black);
            line-height: 1.5;
        }
        .product-card-ky .product-info .product-desc {
            font-size: 0.85rem;
            color: var(--kaiyun-sage);
            margin-bottom: 12px;
            line-height: 1.7;
            flex: 1;
        }
        .product-card-ky .product-info .product-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }
        .faq-kaiyun .accordion-item {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-soft);
        }
        .faq-kaiyun .accordion-button {
            background: #FFFFFF;
            color: var(--kaiyun-black);
            font-family: var(--font-ui);
            font-weight: 600;
            font-size: 1rem;
            padding: 20px 24px;
            border: none;
            box-shadow: none;
            border-radius: 16px !important;
            transition: all var(--kaiyun-transition);
        }
        .faq-kaiyun .accordion-button:not(.collapsed) {
            background: #FFFFFF;
            color: var(--kaiyun-copper-dark);
            border-bottom: 1px solid var(--kaiyun-border);
            border-radius: 16px 16px 0 0 !important;
        }
        .faq-kaiyun .accordion-button:focus {
            box-shadow: none;
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: -3px;
        }
        .faq-kaiyun .accordion-button::after {
            background-size: 1rem;
            transition: transform var(--kaiyun-transition);
        }
        .faq-kaiyun .accordion-body {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--kaiyun-sage);
            line-height: 1.85;
            background: #FFFFFF;
        }
        .guarantee-bar-ky {
            background-color: var(--kaiyun-black);
            border-radius: 22px;
            padding: 28px 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }
        .guarantee-bar-ky .guarantee-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(245, 242, 236, 0.82);
            font-size: 0.92rem;
            font-weight: 400;
        }
        .guarantee-bar-ky .guarantee-item i {
            color: var(--kaiyun-copper);
            font-size: 1.2rem;
        }
        .fixed-bottom-bar-ky {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background-color: rgba(25, 27, 31, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid rgba(245, 242, 236, 0.15);
            padding: 12px 0;
            transform: translateY(0);
            transition: transform 240ms ease;
        }
        .fixed-bottom-bar-ky .bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .fixed-bottom-bar-ky .bar-left {
            display: flex;
            align-items: center;
            gap: 12px;
            color: rgba(245, 242, 236, 0.75);
            font-size: 0.9rem;
        }
        .fixed-bottom-bar-ky .bar-left .bar-highlight {
            color: var(--kaiyun-copper);
            font-weight: 700;
            font-family: var(--font-ui);
        }
        .fixed-bottom-bar-ky .bar-left i {
            color: var(--kaiyun-copper);
            font-size: 1.15rem;
        }
        .fixed-bottom-bar-ky .btn-kaiyun-primary {
            padding: 11px 24px;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .body-padding-bottom {
            padding-bottom: 90px;
        }
        .stats-strip-ky {
            background-color: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            padding: 24px 0;
            box-shadow: var(--kaiyun-shadow-soft);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-around;
            gap: 16px;
        }
        .stats-strip-ky .stat-item {
            text-align: center;
            padding: 8px 16px;
        }
        .stats-strip-ky .stat-item .stat-num {
            font-family: var(--font-ui);
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--kaiyun-black);
            letter-spacing: -0.01em;
            font-variant-numeric: tabular-nums;
            line-height: 1.3;
        }
        .stats-strip-ky .stat-item .stat-num .unit {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--kaiyun-copper);
            margin-left: 2px;
        }
        .stats-strip-ky .stat-item .stat-label {
            font-size: 0.82rem;
            color: var(--kaiyun-sage);
            margin-top: 4px;
        }
        .filter-bar-ky {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            padding: 16px 0;
        }
        .filter-bar-ky .filter-tag {
            padding: 8px 18px;
            border-radius: 999px;
            border: 1px solid var(--kaiyun-border);
            background: #FFFFFF;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--kaiyun-black);
            cursor: default;
            transition: all var(--kaiyun-transition);
            font-family: var(--font-ui);
        }
        .filter-bar-ky .filter-tag:hover,
        .filter-bar-ky .filter-tag.active {
            background-color: var(--kaiyun-copper);
            border-color: var(--kaiyun-copper);
            color: #FFFFFF;
        }
        .filter-bar-ky .filter-select {
            border: 1px solid var(--kaiyun-border);
            border-radius: 999px;
            padding: 8px 16px;
            background: #FFFFFF;
            font-size: 0.88rem;
            font-family: var(--font-ui);
            color: var(--kaiyun-black);
            outline: none;
            cursor: default;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236C7770' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
        }
        .filter-bar-ky .filter-select:focus {
            border-color: var(--kaiyun-copper);
            box-shadow: 0 0 0 4px rgba(185, 120, 58, 0.1);
        }
        .content-card-ky {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            padding: 24px;
            height: 100%;
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
        }
        .content-card-ky:hover {
            transform: translateY(-3px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .content-card-ky .content-date {
            font-size: 0.78rem;
            color: var(--kaiyun-sage);
            font-family: var(--font-ui);
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }
        .content-card-ky .content-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--kaiyun-black);
            line-height: 1.5;
        }
        .content-card-ky .content-excerpt {
            font-size: 0.88rem;
            color: var(--kaiyun-sage);
            line-height: 1.75;
            margin-bottom: 0;
        }
        @media (max-width: 991.98px) {
            .navbar-kaiyun {
                position: sticky;
                top: 0;
            }
            .navbar-kaiyun .navbar-collapse {
                background: rgba(245, 242, 236, 0.98);
                border-radius: 16px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: var(--kaiyun-shadow-soft);
            }
            .navbar-kaiyun .search-wrap {
                min-width: 160px;
                margin: 8px 0;
            }
            .navbar-kaiyun .btn-kaiyun-primary {
                margin: 8px 0;
            }
            .section-kaiyun {
                padding: 64px 0;
            }
            .page-header-ky {
                padding: 52px 0 40px;
            }
        }
        @media (max-width: 767.98px) {
            .section-kaiyun {
                padding: 48px 0;
            }
            .navbar-kaiyun .navbar-brand {
                font-size: 1.25rem;
                margin-right: 8px;
            }
            .navbar-kaiyun .search-wrap {
                min-width: 100%;
                margin: 8px 0;
            }
            .footer-kaiyun {
                padding: 48px 0 24px;
            }
            .footer-kaiyun .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }
            .guarantee-bar-ky {
                padding: 20px;
                flex-direction: column;
                align-items: flex-start;
            }
            .fixed-bottom-bar-ky .bar-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .fixed-bottom-bar-ky .bar-left {
                font-size: 0.82rem;
            }
            .fixed-bottom-bar-ky .btn-kaiyun-primary {
                width: 100%;
                justify-content: center;
            }
            .body-padding-bottom {
                padding-bottom: 120px;
            }
            .page-header-ky h1 {
                font-size: clamp(26px, 6vw, 34px);
            }
            .tier-card-ky {
                margin-bottom: 16px;
            }
        }
        @media (max-width: 519.98px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-kaiyun {
                padding: 40px 0;
            }
            .page-header-ky {
                padding: 40px 0 32px;
            }
            .page-header-ky h1 {
                font-size: 24px;
            }
            .card-kaiyun .card-body-ky {
                padding: 16px;
            }
            .stats-strip-ky .stat-item .stat-num {
                font-size: 1.4rem;
            }
        }

/* roulang page: category4 */
:root {
            --kaiyun-black: #191B1F;
            --kaiyun-bone: #F5F2EC;
            --kaiyun-copper: #B9783A;
            --kaiyun-copper-dark: #9A5F2E;
            --kaiyun-sage: #6C7770;
            --kaiyun-border: #E8E0D4;
            --kaiyun-white: #FFFFFF;
            --kaiyun-soft: #EDE7DD;
            --kaiyun-radius-card: 22px;
            --kaiyun-radius-btn: 999px;
            --kaiyun-shadow-soft: 0 10px 30px rgba(25, 27, 31, 0.06);
            --kaiyun-shadow-hover: 0 22px 45px rgba(25, 27, 31, 0.12);
            --kaiyun-transition: 200ms ease;
            --kaiyun-section-padding: 88px 0;
            --kaiyun-container-max: 1200px;
            --kaiyun-gutter: 2rem;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-ui: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--kaiyun-bone);
            color: var(--kaiyun-black);
            font-size: 16px;
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            overflow-x: hidden;
            padding-bottom: 76px;
        }
        a {
            color: var(--kaiyun-black);
            text-decoration: none;
            transition: color var(--kaiyun-transition);
        }
        a:hover {
            color: var(--kaiyun-copper);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container-custom {
            max-width: var(--kaiyun-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-kaiyun {
            padding: var(--kaiyun-section-padding);
            position: relative;
        }
        .section-kaiyun.alt {
            background-color: #FFFFFF;
        }
        .section-kaiyun.dark {
            background-color: var(--kaiyun-black);
            color: #F2EEE8;
        }
        .section-kaiyun.dark h2,
        .section-kaiyun.dark h3,
        .section-kaiyun.dark h4 {
            color: #FFFFFF;
        }
        .section-kaiyun.dark p {
            color: rgba(245, 242, 236, 0.72);
        }
        .section-kaiyun.dark .text-sage {
            color: rgba(245, 242, 236, 0.6) !important;
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.85rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--kaiyun-copper);
            margin-bottom: 16px;
        }
        .eyebrow::before {
            content: '';
            width: 28px;
            height: 1px;
            background: var(--kaiyun-copper);
            display: inline-block;
        }
        .btn-kaiyun {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 28px;
            border-radius: var(--kaiyun-radius-btn);
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.98rem;
            line-height: 1.4;
            text-align: center;
            border: 1px solid transparent;
            transition: all var(--kaiyun-transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-kaiyun-primary {
            background-color: var(--kaiyun-copper);
            color: #FFFFFF;
            border-color: var(--kaiyun-copper);
        }
        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:active,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-copper-dark);
            border-color: var(--kaiyun-copper-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(185, 120, 58, 0.22);
        }
        .btn-kaiyun-outline {
            background-color: transparent;
            color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
        }
        .btn-kaiyun-outline:hover,
        .btn-kaiyun-outline:active,
        .btn-kaiyun-outline:focus {
            background-color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .btn-kaiyun-light {
            background-color: #FFFFFF;
            color: var(--kaiyun-black);
            border-color: #FFFFFF;
        }
        .btn-kaiyun-light:hover {
            background-color: var(--kaiyun-copper);
            border-color: var(--kaiyun-copper);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .badge-kaiyun {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            background-color: var(--kaiyun-soft);
            color: var(--kaiyun-black);
            border: 1px solid var(--kaiyun-border);
        }
        .badge-kaiyun.copper {
            background-color: rgba(185, 120, 58, 0.12);
            color: var(--kaiyun-copper-dark);
            border-color: rgba(185, 120, 58, 0.25);
        }
        .card-kaiyun {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            overflow: hidden;
        }
        .card-kaiyun:hover {
            transform: translateY(-5px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .text-sage {
            color: var(--kaiyun-sage);
        }
        .text-copper {
            color: var(--kaiyun-copper);
        }
        .bg-bone {
            background-color: var(--kaiyun-bone);
        }
        .bg-white {
            background-color: #FFFFFF;
        }
        .bg-soft {
            background-color: var(--kaiyun-soft);
        }
        .border-kaiyun {
            border-color: var(--kaiyun-border) !important;
        }
        .fw-600 {
            font-weight: 600;
        }
        .fw-700 {
            font-weight: 700;
        }
        .serif {
            font-family: var(--font-serif);
        }
        .fs-hero {
            font-size: clamp(32px, 5vw, 56px);
            line-height: 1.25;
            font-weight: 700;
            font-family: var(--font-serif);
        }
        .fs-section-title {
            font-size: clamp(26px, 3.4vw, 36px);
            line-height: 1.35;
            font-weight: 700;
            font-family: var(--font-serif);
        }
        .fs-card-title {
            font-size: 20px;
            line-height: 1.4;
            font-weight: 700;
            font-family: var(--font-serif);
        }
        .leading-relaxed {
            line-height: 1.9;
        }

        /* ========== NAVBAR ========== */
        .navbar-kaiyun {
            background-color: rgba(245, 242, 236, 0.96);
            border-bottom: 1px solid var(--kaiyun-border);
            padding: 0;
            min-height: 68px;
            position: sticky;
            top: 0;
            z-index: 1030;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .navbar-kaiyun .navbar-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.5rem;
            color: var(--kaiyun-black);
            letter-spacing: 0.04em;
            padding: 0;
            margin-right: 0;
            line-height: 1.2;
        }
        .navbar-kaiyun .navbar-brand:hover {
            color: var(--kaiyun-copper);
        }
        .navbar-kaiyun .navbar-toggler {
            border: none;
            font-size: 1.4rem;
            color: var(--kaiyun-black);
            padding: 8px 4px;
        }
        .navbar-kaiyun .navbar-toggler:focus {
            box-shadow: none;
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: 2px;
            border-radius: 6px;
        }
        .navbar-kaiyun .navbar-collapse {
            background-color: rgba(245, 242, 236, 0.98);
        }
        .navbar-kaiyun .nav-link {
            font-family: var(--font-ui);
            font-weight: 400;
            font-size: 0.95rem;
            color: var(--kaiyun-black);
            padding: 10px 18px;
            letter-spacing: 0.02em;
            transition: color var(--kaiyun-transition);
            position: relative;
        }
        .navbar-kaiyun .nav-link:hover {
            color: var(--kaiyun-copper);
        }
        .navbar-kaiyun .nav-link.active {
            color: var(--kaiyun-copper);
            font-weight: 600;
        }
        .navbar-kaiyun .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background-color: var(--kaiyun-copper);
            border-radius: 2px;
        }
        .navbar-kaiyun .search-wrap {
            display: flex;
            align-items: center;
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 999px;
            padding: 7px 16px;
            gap: 8px;
            width: 190px;
            transition: border-color var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
        }
        .navbar-kaiyun .search-wrap i {
            color: var(--kaiyun-sage);
            font-size: 0.9rem;
        }
        .navbar-kaiyun .search-wrap input {
            border: none;
            background: transparent;
            font-size: 0.85rem;
            color: var(--kaiyun-black);
            width: 100%;
            padding: 0;
        }
        .navbar-kaiyun .search-wrap input:focus {
            outline: none;
        }
        .navbar-kaiyun .search-wrap:focus-within {
            border-color: var(--kaiyun-copper);
            box-shadow: 0 0 0 3px rgba(185, 120, 58, 0.12);
        }
        .navbar-kaiyun .btn-kaiyun {
            padding: 10px 22px;
            font-size: 0.88rem;
        }

        /* ========== BREADCRUMB & PAGE HEADER ========== */
        .page-header-kaiyun {
            padding: 56px 0 40px;
            position: relative;
            overflow: hidden;
            background-color: var(--kaiyun-bone);
        }
        .page-header-kaiyun::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(245,242,236,0.92) 0%, rgba(245,242,236,0.65) 55%, rgba(245,242,236,0.2) 100%);
            z-index: 1;
            pointer-events: none;
        }
        .page-header-kaiyun .header-bg-img {
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            opacity: 0.35;
        }
        .page-header-kaiyun .container-custom {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-kaiyun {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--kaiyun-sage);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }
        .breadcrumb-kaiyun a {
            color: var(--kaiyun-sage);
        }
        .breadcrumb-kaiyun a:hover {
            color: var(--kaiyun-copper);
        }
        .breadcrumb-kaiyun .separator {
            color: var(--kaiyun-border);
            font-size: 0.7rem;
        }
        .breadcrumb-kaiyun .current {
            color: var(--kaiyun-black);
            font-weight: 500;
        }
        .page-header-kaiyun h1 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: clamp(28px, 3.8vw, 42px);
            line-height: 1.3;
            color: var(--kaiyun-black);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .page-header-kaiyun .header-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-sage);
            max-width: 680px;
            line-height: 1.85;
        }

        /* ========== SERVICE FILTER BAR ========== */
        .filter-bar-kaiyun {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            box-shadow: var(--kaiyun-shadow-soft);
        }
        .filter-bar-kaiyun .filter-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .filter-bar-kaiyun .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 400;
            color: var(--kaiyun-black);
            background: var(--kaiyun-bone);
            border: 1px solid var(--kaiyun-border);
            cursor: pointer;
            transition: all var(--kaiyun-transition);
            white-space: nowrap;
        }
        .filter-bar-kaiyun .filter-tag:hover {
            border-color: var(--kaiyun-copper);
            color: var(--kaiyun-copper);
        }
        .filter-bar-kaiyun .filter-tag.active {
            background: var(--kaiyun-black);
            color: #FFFFFF;
            border-color: var(--kaiyun-black);
        }
        .filter-bar-kaiyun .sort-select {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--kaiyun-sage);
        }
        .filter-bar-kaiyun .sort-select select {
            border: 1px solid var(--kaiyun-border);
            border-radius: 10px;
            padding: 7px 14px;
            font-size: 0.85rem;
            color: var(--kaiyun-black);
            background: #FFFFFF;
            cursor: pointer;
        }
        .filter-bar-kaiyun .sort-select select:focus {
            border-color: var(--kaiyun-copper);
            outline: none;
        }

        /* ========== SERVICE LIST ========== */
        .service-list-kaiyun .service-card {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            overflow: hidden;
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .service-list-kaiyun .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .service-list-kaiyun .service-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
        }
        .service-list-kaiyun .service-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }
        .service-list-kaiyun .service-card:hover .card-img-wrap img {
            transform: scale(1.03);
        }
        .service-list-kaiyun .service-card .card-img-wrap .badge-overlay {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255,255,255,0.92);
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--kaiyun-black);
            letter-spacing: 0.03em;
        }
        .service-list-kaiyun .service-card .card-body-custom {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-list-kaiyun .service-card .card-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--kaiyun-black);
            margin-bottom: 8px;
        }
        .service-list-kaiyun .service-card .card-desc {
            font-size: 0.92rem;
            color: var(--kaiyun-sage);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }
        .service-list-kaiyun .service-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 16px;
            border-top: 1px solid var(--kaiyun-border);
        }
        .service-list-kaiyun .service-card .service-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--kaiyun-copper);
        }
        .service-list-kaiyun .service-card .service-link:hover {
            color: var(--kaiyun-copper-dark);
        }
        .service-list-kaiyun .service-card .service-link i {
            transition: transform var(--kaiyun-transition);
        }
        .service-list-kaiyun .service-card .service-link:hover i {
            transform: translateX(4px);
        }

        /* ========== RANKING LIST ========== */
        .ranking-kaiyun .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            padding: 16px 20px;
            box-shadow: var(--kaiyun-shadow-soft);
            transition: all var(--kaiyun-transition);
            margin-bottom: 14px;
        }
        .ranking-kaiyun .rank-item:hover {
            transform: translateX(4px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .ranking-kaiyun .rank-number {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.6rem;
            color: var(--kaiyun-copper);
            min-width: 44px;
            text-align: center;
            line-height: 1;
        }
        .ranking-kaiyun .rank-content {
            flex: 1;
        }
        .ranking-kaiyun .rank-content .rank-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--kaiyun-black);
            margin-bottom: 2px;
        }
        .ranking-kaiyun .rank-content .rank-sub {
            font-size: 0.82rem;
            color: var(--kaiyun-sage);
        }
        .ranking-kaiyun .rank-badge {
            flex-shrink: 0;
        }

        /* ========== SCENE SECTION ========== */
        .scene-kaiyun .scene-img-wrap {
            position: relative;
            border-radius: var(--kaiyun-radius-card);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-soft);
        }
        .scene-kaiyun .scene-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .scene-kaiyun .scene-points {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .scene-kaiyun .scene-points li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 18px;
            font-size: 0.95rem;
            color: var(--kaiyun-black);
            line-height: 1.75;
        }
        .scene-kaiyun .scene-points li i {
            color: var(--kaiyun-copper);
            font-size: 1.1rem;
            flex-shrink: 0;
            margin-top: 4px;
        }

        /* ========== PROMISE / COMMITMENT ========== */
        .promise-kaiyun .promise-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            padding: 22px 24px;
            box-shadow: var(--kaiyun-shadow-soft);
            height: 100%;
            transition: all var(--kaiyun-transition);
        }
        .promise-kaiyun .promise-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .promise-kaiyun .promise-item .promise-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(185, 120, 58, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--kaiyun-copper);
            font-size: 1.3rem;
        }
        .promise-kaiyun .promise-item .promise-title {
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--kaiyun-black);
            margin-bottom: 4px;
        }
        .promise-kaiyun .promise-item .promise-desc {
            font-size: 0.9rem;
            color: var(--kaiyun-sage);
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-kaiyun .accordion-item {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-soft);
        }
        .faq-kaiyun .accordion-button {
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.98rem;
            color: var(--kaiyun-black);
            background: #FFFFFF;
            padding: 20px 24px;
            border: none;
            box-shadow: none;
            border-radius: 16px !important;
        }
        .faq-kaiyun .accordion-button:not(.collapsed) {
            color: var(--kaiyun-copper);
            background: #FFFFFF;
            box-shadow: none;
            border-bottom: 1px solid var(--kaiyun-border);
            border-radius: 16px 16px 0 0 !important;
        }
        .faq-kaiyun .accordion-button:focus {
            box-shadow: none;
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: -3px;
        }
        .faq-kaiyun .accordion-button::after {
            background-size: 1.1rem;
            flex-shrink: 0;
        }
        .faq-kaiyun .accordion-body {
            padding: 18px 24px 22px;
            font-size: 0.92rem;
            color: var(--kaiyun-sage);
            line-height: 1.8;
        }

        /* ========== ARTICLE CARDS ========== */
        .article-card-kaiyun {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            overflow: hidden;
            transition: all var(--kaiyun-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .article-card-kaiyun:hover {
            transform: translateY(-5px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .article-card-kaiyun .article-img-wrap {
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .article-card-kaiyun .article-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }
        .article-card-kaiyun:hover .article-img-wrap img {
            transform: scale(1.03);
        }
        .article-card-kaiyun .article-body {
            padding: 20px 24px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card-kaiyun .article-date {
            font-size: 0.78rem;
            color: var(--kaiyun-sage);
            letter-spacing: 0.03em;
            margin-bottom: 8px;
        }
        .article-card-kaiyun .article-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--kaiyun-black);
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .article-card-kaiyun .article-excerpt {
            font-size: 0.88rem;
            color: var(--kaiyun-sage);
            line-height: 1.7;
            flex: 1;
        }

        /* ========== FIXED BOTTOM CTA ========== */
        .fixed-bottom-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            background: var(--kaiyun-black);
            color: #F2EEE8;
            padding: 12px 0;
            border-top: 1px solid rgba(232, 224, 212, 0.18);
            box-shadow: 0 -8px 28px rgba(25, 27, 31, 0.28);
        }
        .fixed-bottom-cta .cta-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .fixed-bottom-cta .cta-text {
            font-size: 0.9rem;
            line-height: 1.5;
            color: rgba(245, 242, 236, 0.75);
        }
        .fixed-bottom-cta .cta-text strong {
            color: #FFFFFF;
            font-weight: 600;
        }
        .fixed-bottom-cta .btn-kaiyun {
            padding: 11px 26px;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        /* ========== FOOTER ========== */
        .footer-kaiyun {
            background-color: var(--kaiyun-black);
            color: #F2EEE8;
            padding: 64px 0 32px;
            margin-top: 0;
        }
        .footer-kaiyun .footer-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.8rem;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .footer-kaiyun h5 {
            font-family: var(--font-ui);
            font-weight: 600;
            font-size: 0.95rem;
            color: #FFFFFF;
            letter-spacing: 0.06em;
            margin-bottom: 16px;
        }
        .footer-kaiyun ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-kaiyun ul li {
            margin-bottom: 10px;
        }
        .footer-kaiyun ul li a {
            color: rgba(245, 242, 236, 0.65);
            font-size: 0.9rem;
            transition: color var(--kaiyun-transition);
        }
        .footer-kaiyun ul li a:hover {
            color: var(--kaiyun-copper);
        }
        .footer-kaiyun .footer-bottom {
            border-top: 1px solid rgba(245, 242, 236, 0.12);
            margin-top: 48px;
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(245, 242, 236, 0.55);
        }
        .footer-kaiyun .footer-bottom a {
            color: rgba(245, 242, 236, 0.55);
        }
        .footer-kaiyun .footer-bottom a:hover {
            color: var(--kaiyun-copper);
        }
        .footer-kaiyun .footer-bottom span {
            margin-right: 16px;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 991px) {
            .navbar-kaiyun .navbar-collapse {
                padding: 16px 0 20px;
            }
            .navbar-kaiyun .navbar-nav {
                gap: 2px;
            }
            .navbar-kaiyun .d-flex.align-items-center {
                gap: 12px;
            }
            .navbar-kaiyun .search-wrap {
                width: 150px;
            }
            .page-header-kaiyun .header-bg-img {
                width: 70%;
                opacity: 0.22;
            }
            .section-kaiyun {
                padding: 64px 0;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-bottom: 86px;
            }
            .navbar-kaiyun .search-wrap {
                display: none;
            }
            .page-header-kaiyun {
                padding: 40px 0 30px;
            }
            .page-header-kaiyun .header-bg-img {
                width: 100%;
                opacity: 0.15;
            }
            .filter-bar-kaiyun {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-bar-kaiyun .sort-select {
                width: 100%;
                justify-content: space-between;
            }
            .footer-kaiyun .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .fixed-bottom-cta .cta-content {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .fixed-bottom-cta .btn-kaiyun {
                width: 100%;
            }
        }
        @media (max-width: 520px) {
            :root {
                --kaiyun-section-padding: 52px 0;
                --kaiyun-gutter: 1.2rem;
            }
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-header-kaiyun h1 {
                font-size: 24px;
            }
            .service-list-kaiyun .service-card .card-body-custom {
                padding: 18px 18px 20px;
            }
            .ranking-kaiyun .rank-item {
                flex-wrap: wrap;
                gap: 10px;
            }
            .promise-kaiyun .promise-item {
                flex-direction: column;
                gap: 12px;
            }
        }

/* roulang page: category6 */
:root {
            --kaiyun-black: #191B1F;
            --kaiyun-bone: #F5F2EC;
            --kaiyun-copper: #B9783A;
            --kaiyun-copper-dark: #9A5F2E;
            --kaiyun-sage: #6C7770;
            --kaiyun-border: #E8E0D4;
            --kaiyun-white: #FFFFFF;
            --kaiyun-soft: #EDE7DD;
            --kaiyun-radius-card: 22px;
            --kaiyun-radius-btn: 999px;
            --kaiyun-shadow-soft: 0 10px 30px rgba(25, 27, 31, 0.06);
            --kaiyun-shadow-hover: 0 22px 45px rgba(25, 27, 31, 0.12);
            --kaiyun-transition: 200ms ease;
            --kaiyun-section-padding: 72px 0;
            --kaiyun-container-max: 1200px;
            --kaiyun-gutter: 2rem;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-ui: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, sans-serif;
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background-color: var(--kaiyun-bone);
            color: var(--kaiyun-black);
            font-size: 16px;
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            overflow-x: hidden;
            padding-bottom: 72px;
        }
        a { color: var(--kaiyun-black); text-decoration: none; transition: color var(--kaiyun-transition); }
        a:hover { color: var(--kaiyun-copper); text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container-custom {
            max-width: var(--kaiyun-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-kaiyun {
            padding: var(--kaiyun-section-padding);
            position: relative;
        }
        .section-kaiyun.alt { background-color: #FFFFFF; }
        .section-kaiyun.dark {
            background-color: var(--kaiyun-black);
            color: #F2EEE8;
        }
        .section-kaiyun.dark h2, .section-kaiyun.dark h3, .section-kaiyun.dark h4 { color: #FFFFFF; }
        .section-kaiyun.dark p { color: rgba(245, 242, 236, 0.72); }
        .section-kaiyun.dark .text-sage { color: rgba(245, 242, 236, 0.6) !important; }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.85rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--kaiyun-copper);
            margin-bottom: 16px;
        }
        .eyebrow::before {
            content: '';
            width: 28px;
            height: 1px;
            background: var(--kaiyun-copper);
            display: inline-block;
        }
        .btn-kaiyun {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 28px;
            border-radius: var(--kaiyun-radius-btn);
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.98rem;
            line-height: 1.4;
            text-align: center;
            border: 1px solid transparent;
            transition: all var(--kaiyun-transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-kaiyun-primary {
            background-color: var(--kaiyun-copper);
            color: #FFFFFF;
            border-color: var(--kaiyun-copper);
        }
        .btn-kaiyun-primary:hover, .btn-kaiyun-primary:active, .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-copper-dark);
            border-color: var(--kaiyun-copper-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(185, 120, 58, 0.22);
        }
        .btn-kaiyun-outline {
            background-color: transparent;
            color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
        }
        .btn-kaiyun-outline:hover, .btn-kaiyun-outline:active, .btn-kaiyun-outline:focus {
            background-color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .btn-kaiyun-light {
            background-color: #FFFFFF;
            color: var(--kaiyun-black);
            border-color: #FFFFFF;
        }
        .btn-kaiyun-light:hover {
            background-color: var(--kaiyun-copper);
            border-color: var(--kaiyun-copper);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .badge-kaiyun {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            background-color: var(--kaiyun-soft);
            color: var(--kaiyun-black);
            border: 1px solid var(--kaiyun-border);
        }
        .badge-kaiyun.copper {
            background-color: rgba(185, 120, 58, 0.12);
            color: var(--kaiyun-copper-dark);
            border-color: rgba(185, 120, 58, 0.25);
        }
        .card-kaiyun {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            overflow: hidden;
        }
        .card-kaiyun:hover {
            transform: translateY(-4px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .text-sage { color: var(--kaiyun-sage) !important; }
        .text-copper { color: var(--kaiyun-copper) !important; }
        .bg-soft { background-color: var(--kaiyun-soft); }

        /* Navbar */
        .navbar-kaiyun {
            position: sticky;
            top: 0;
            z-index: 1020;
            background-color: rgba(245, 242, 236, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--kaiyun-border);
            padding: 0.65rem 0;
            min-height: 68px;
        }
        .navbar-kaiyun .navbar-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.5rem;
            color: var(--kaiyun-black);
            letter-spacing: 0.06em;
        }
        .navbar-kaiyun .navbar-brand:hover { color: var(--kaiyun-copper); }
        .navbar-kaiyun .navbar-nav .nav-link {
            font-family: var(--font-ui);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--kaiyun-black);
            padding: 0.5rem 1rem;
            border-radius: 999px;
            transition: all var(--kaiyun-transition);
        }
        .navbar-kaiyun .navbar-nav .nav-link:hover {
            color: var(--kaiyun-copper);
            background-color: rgba(185, 120, 58, 0.08);
        }
        .navbar-kaiyun .navbar-nav .nav-link.active {
            color: var(--kaiyun-copper);
            background-color: rgba(185, 120, 58, 0.12);
        }
        .navbar-kaiyun .navbar-toggler {
            border: 1px solid var(--kaiyun-border);
            background-color: var(--kaiyun-white);
            color: var(--kaiyun-black);
            padding: 0.4rem 0.6rem;
            font-size: 1.3rem;
            border-radius: 10px;
        }
        .navbar-kaiyun .navbar-toggler:focus { box-shadow: none; }
        .search-wrap {
            display: flex;
            align-items: center;
            background: var(--kaiyun-white);
            border: 1px solid var(--kaiyun-border);
            border-radius: 999px;
            padding: 0.4rem 0.8rem;
            margin-right: 0.65rem;
            width: 200px;
            transition: border-color var(--kaiyun-transition);
        }
        .search-wrap:focus-within { border-color: var(--kaiyun-copper); }
        .search-wrap i { color: var(--kaiyun-sage); font-size: 0.9rem; margin-right: 0.35rem; }
        .search-wrap input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.85rem;
            color: var(--kaiyun-black);
            width: 100%;
            font-family: var(--font-ui);
        }
        .search-wrap input::placeholder { color: var(--kaiyun-sage); }

        /* Page Hero */
        .page-hero {
            position: relative;
            padding: 64px 0;
            background-image: url('/assets/images/ed4f500b3108ae26.webp');
            background-size: cover;
            background-position: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(245, 242, 236, 0.88);
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 1;
        }
        .page-hero .breadcrumb-kaiyun {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--kaiyun-sage);
            margin-bottom: 16px;
        }
        .page-hero .breadcrumb-kaiyun a { color: var(--kaiyun-sage); }
        .page-hero .breadcrumb-kaiyun a:hover { color: var(--kaiyun-copper); }
        .page-hero .breadcrumb-kaiyun .sep { color: var(--kaiyun-border); }
        .page-hero h1 {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: clamp(2rem, 4vw, 3.2rem);
            line-height: 1.3;
            color: var(--kaiyun-black);
            margin-bottom: 16px;
        }
        .page-hero .lead-description {
            font-size: 1.05rem;
            color: var(--kaiyun-sage);
            max-width: 700px;
        }

        /* Toolbar */
        .toolbar-kaiyun {
            background: var(--kaiyun-white);
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px;
            padding: 16px 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-top: -30px;
            position: relative;
            z-index: 5;
            box-shadow: var(--kaiyun-shadow-soft);
        }
        .toolbar-kaiyun .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 999px;
            border: 1px solid var(--kaiyun-border);
            background: var(--kaiyun-bone);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--kaiyun-black);
            cursor: default;
            transition: all var(--kaiyun-transition);
            user-select: none;
        }
        .toolbar-kaiyun .filter-tag:hover, .toolbar-kaiyun .filter-tag.active {
            border-color: var(--kaiyun-copper);
            background: rgba(185, 120, 58, 0.12);
            color: var(--kaiyun-copper-dark);
        }
        .toolbar-kaiyun .sort-select {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 14px;
            border-radius: 999px;
            border: 1px solid var(--kaiyun-border);
            background: var(--kaiyun-bone);
            font-size: 0.85rem;
            color: var(--kaiyun-black);
            cursor: default;
            user-select: none;
        }
        .toolbar-kaiyun .sort-select i { font-size: 0.8rem; color: var(--kaiyun-sage); }

        /* Product Cards */
        .product-card {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            overflow: hidden;
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .product-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .product-card .card-img-wrap {
            position: relative;
            aspect-ratio: 4/3;
            overflow: hidden;
            background-color: var(--kaiyun-soft);
        }
        .product-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }
        .product-card:hover .card-img-wrap img { transform: scale(1.03); }
        .product-card .card-body-p {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .product-card .product-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--kaiyun-black);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .product-card .product-desc {
            font-size: 0.88rem;
            color: var(--kaiyun-sage);
            margin-bottom: 14px;
            flex: 1;
        }
        .product-card .product-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
        }
        .product-card .price {
            font-family: var(--font-ui);
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--kaiyun-copper);
            font-variant-numeric: tabular-nums;
        }
        .product-card .btn-small {
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 500;
            border: 1px solid var(--kaiyun-copper);
            background: transparent;
            color: var(--kaiyun-copper);
            transition: all var(--kaiyun-transition);
            cursor: pointer;
        }
        .product-card .btn-small:hover {
            background: var(--kaiyun-copper);
            color: #fff;
        }

        /* Ranking List */
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #fff;
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px;
            padding: 14px 18px;
            margin-bottom: 12px;
            transition: all var(--kaiyun-transition);
        }
        .rank-item:hover {
            border-color: var(--kaiyun-copper);
            box-shadow: var(--kaiyun-shadow-soft);
            transform: translateY(-2px);
        }
        .rank-number {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.6rem;
            color: var(--kaiyun-copper);
            min-width: 44px;
            text-align: center;
            font-variant-numeric: tabular-nums;
        }
        .rank-info h4 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--kaiyun-black);
            margin-bottom: 2px;
            font-family: var(--font-ui);
        }
        .rank-info p {
            font-size: 0.82rem;
            color: var(--kaiyun-sage);
            margin-bottom: 0;
        }

        /* Scene Split */
        .scene-split {
            display: flex;
            align-items: center;
            gap: 40px;
        }
        .scene-split .scene-img {
            flex: 0 0 45%;
            border-radius: var(--kaiyun-radius-card);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-soft);
        }
        .scene-split .scene-img img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .scene-split .scene-text {
            flex: 1;
        }
        .scene-split .scene-text h3 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.6rem;
            color: var(--kaiyun-black);
            margin-bottom: 14px;
        }
        .scene-split .scene-text p {
            color: var(--kaiyun-sage);
            font-size: 0.95rem;
        }

        /* Promise Icons */
        .promise-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .promise-item {
            flex: 1 0 200px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: #fff;
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px;
            padding: 18px 20px;
            transition: all var(--kaiyun-transition);
        }
        .promise-item:hover {
            border-color: var(--kaiyun-copper);
            box-shadow: var(--kaiyun-shadow-soft);
        }
        .promise-item i {
            font-size: 1.4rem;
            color: var(--kaiyun-copper);
            flex-shrink: 0;
            margin-top: 3px;
        }
        .promise-item h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--kaiyun-black);
            margin-bottom: 4px;
            font-family: var(--font-ui);
        }
        .promise-item p {
            font-size: 0.82rem;
            color: var(--kaiyun-sage);
            margin-bottom: 0;
        }

        /* FAQ */
        .accordion-kaiyun .accordion-item {
            border: 1px solid var(--kaiyun-border);
            border-radius: 14px !important;
            margin-bottom: 12px;
            overflow: hidden;
            background: #fff;
            box-shadow: none;
        }
        .accordion-kaiyun .accordion-header {
            margin: 0;
        }
        .accordion-kaiyun .accordion-button {
            background: #fff;
            border: none;
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--kaiyun-black);
            padding: 16px 22px;
            border-radius: 14px !important;
            transition: all var(--kaiyun-transition);
        }
        .accordion-kaiyun .accordion-button:not(.collapsed) {
            background: var(--kaiyun-bone);
            color: var(--kaiyun-copper-dark);
            box-shadow: none;
        }
        .accordion-kaiyun .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--kaiyun-copper);
            outline-offset: -2px;
        }
        .accordion-kaiyun .accordion-button::after {
            filter: brightness(0.6);
        }
        .accordion-kaiyun .accordion-body {
            font-size: 0.88rem;
            color: var(--kaiyun-sage);
            padding: 0 22px 18px;
            line-height: 1.8;
        }

        /* News Card */
        .news-card {
            background: #fff;
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px;
            overflow: hidden;
            transition: all var(--kaiyun-transition);
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        .news-card .news-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--kaiyun-soft);
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }
        .news-card:hover .news-img img { transform: scale(1.03); }
        .news-card .news-body {
            padding: 16px 20px;
        }
        .news-card .news-body h4 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--kaiyun-black);
            margin-bottom: 8px;
            font-family: var(--font-ui);
            line-height: 1.6;
        }
        .news-card .news-body p {
            font-size: 0.82rem;
            color: var(--kaiyun-sage);
            margin-bottom: 0;
        }

        /* Bottom Fixed Bar */
        .bottom-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: var(--kaiyun-black);
            border-top: 1px solid rgba(245, 242, 236, 0.15);
            padding: 12px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.15);
        }
        .bottom-cta-bar .bar-text {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .bottom-cta-bar .bar-text .bar-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
        }
        .bottom-cta-bar .bar-text .bar-desc {
            font-size: 0.78rem;
            color: rgba(245, 242, 236, 0.6);
        }
        .bottom-cta-bar .btn-kaiyun-primary {
            flex-shrink: 0;
            padding: 10px 22px;
            font-size: 0.88rem;
        }

        /* Footer */
        .footer-kaiyun {
            background: var(--kaiyun-black);
            color: #F2EEE8;
            padding: 64px 24px 28px;
            margin-top: 0;
        }
        .footer-kaiyun .container-custom { padding-left: 0; padding-right: 0; }
        .footer-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-kaiyun h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            font-family: var(--font-ui);
        }
        .footer-kaiyun ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-kaiyun ul li { margin-bottom: 10px; }
        .footer-kaiyun ul li a {
            color: rgba(245, 242, 236, 0.6);
            font-size: 0.88rem;
            transition: color var(--kaiyun-transition);
        }
        .footer-kaiyun ul li a:hover { color: var(--kaiyun-copper); }
        .footer-bottom {
            border-top: 1px solid rgba(245, 242, 236, 0.15);
            margin-top: 40px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: rgba(245, 242, 236, 0.45);
        }
        .footer-bottom a {
            color: rgba(245, 242, 236, 0.45);
            margin-left: 12px;
            transition: color var(--kaiyun-transition);
        }
        .footer-bottom a:hover { color: var(--kaiyun-copper); }
        .footer-bottom span { display: inline-block; margin-right: 12px; }

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-kaiyun .navbar-collapse {
                background: var(--kaiyun-bone);
                border: 1px solid var(--kaiyun-border);
                border-radius: 16px;
                padding: 16px;
                margin-top: 10px;
                box-shadow: var(--kaiyun-shadow-soft);
            }
            .navbar-kaiyun .navbar-nav .nav-link {
                padding: 0.6rem 1rem;
                display: block;
                text-align: left;
            }
            .search-wrap {
                width: 100%;
                margin-bottom: 10px;
            }
            .scene-split {
                flex-direction: column;
                gap: 24px;
            }
            .scene-split .scene-img {
                flex: none;
                width: 100%;
            }
            .scene-split .scene-img img { height: 240px; }
        }
        @media (max-width: 767.98px) {
            :root { --kaiyun-section-padding: 56px 0; }
            .page-hero { padding: 40px 0; }
            .toolbar-kaiyun {
                margin-top: -20px;
                padding: 12px 16px;
                gap: 8px;
            }
            .toolbar-kaiyun .filter-tag, .toolbar-kaiyun .sort-select {
                font-size: 0.78rem;
                padding: 6px 12px;
            }
            .product-card .card-body-p { padding: 16px 18px; }
            .product-card .product-title { font-size: 1rem; }
            .bottom-cta-bar {
                padding: 10px 16px;
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .bottom-cta-bar .bar-text { align-items: center; }
            .footer-kaiyun { padding: 48px 20px 24px; }
            .footer-bottom { flex-direction: column; text-align: center; gap: 8px; }
            .footer-bottom span { display: block; margin-right: 0; margin-bottom: 4px; }
            .footer-bottom a { margin-left: 6px; margin-right: 6px; }
            .rank-item { padding: 12px 14px; gap: 10px; }
            .rank-number { font-size: 1.3rem; min-width: 34px; }
        }
        @media (max-width: 575.98px) {
            .container-custom { padding-left: 16px; padding-right: 16px; }
            .page-hero h1 { font-size: 1.8rem; }
            .product-card .card-img-wrap { aspect-ratio: 3/2; }
            .promise-row { gap: 10px; }
            .promise-item { flex: 1 0 100%; padding: 14px 16px; }
            .navbar-kaiyun .navbar-brand { font-size: 1.3rem; }
            .btn-kaiyun { padding: 11px 22px; font-size: 0.88rem; }
        }

/* roulang page: category5 */
:root {
            --kaiyun-black: #191B1F;
            --kaiyun-bone: #F5F2EC;
            --kaiyun-copper: #B9783A;
            --kaiyun-copper-dark: #9A5F2E;
            --kaiyun-sage: #6C7770;
            --kaiyun-border: #E8E0D4;
            --kaiyun-white: #FFFFFF;
            --kaiyun-soft: #EDE7DD;
            --kaiyun-radius-card: 22px;
            --kaiyun-radius-btn: 999px;
            --kaiyun-shadow-soft: 0 10px 30px rgba(25, 27, 31, 0.06);
            --kaiyun-shadow-hover: 0 22px 45px rgba(25, 27, 31, 0.12);
            --kaiyun-transition: 200ms ease;
            --kaiyun-section-padding: 96px 0;
            --kaiyun-container-max: 1200px;
            --kaiyun-gutter: 2rem;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-ui: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, sans-serif;
        }
        
        * {
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: var(--font-sans);
            background-color: var(--kaiyun-bone);
            color: var(--kaiyun-black);
            font-size: 16px;
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            overflow-x: hidden;
            padding-bottom: 0;
        }
        
        a {
            color: var(--kaiyun-black);
            text-decoration: none;
            transition: color var(--kaiyun-transition);
        }
        
        a:hover {
            color: var(--kaiyun-copper);
            text-decoration: none;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: 2px;
            border-radius: 4px;
        }
        
        .container-custom {
            max-width: var(--kaiyun-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        
        .section-kaiyun {
            padding: var(--kaiyun-section-padding);
            position: relative;
        }
        
        .section-kaiyun.alt {
            background-color: #FFFFFF;
        }
        
        .section-kaiyun.dark {
            background-color: var(--kaiyun-black);
            color: #F2EEE8;
        }
        
        .section-kaiyun.dark h2,
        .section-kaiyun.dark h3,
        .section-kaiyun.dark h4 {
            color: #FFFFFF;
        }
        
        .section-kaiyun.dark p {
            color: rgba(245, 242, 236, 0.72);
        }
        
        .section-kaiyun.dark .text-sage {
            color: rgba(245, 242, 236, 0.6) !important;
        }
        
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.85rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--kaiyun-copper);
            margin-bottom: 16px;
        }
        
        .eyebrow::before {
            content: '';
            width: 28px;
            height: 1px;
            background: var(--kaiyun-copper);
            display: inline-block;
        }
        
        .btn-kaiyun {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 28px;
            border-radius: var(--kaiyun-radius-btn);
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.98rem;
            line-height: 1.4;
            text-align: center;
            border: 1px solid transparent;
            transition: all var(--kaiyun-transition);
            cursor: pointer;
            white-space: nowrap;
        }
        
        .btn-kaiyun-primary {
            background-color: var(--kaiyun-copper);
            color: #FFFFFF;
            border-color: var(--kaiyun-copper);
        }
        
        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:active,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-copper-dark);
            border-color: var(--kaiyun-copper-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(185, 120, 58, 0.22);
        }
        
        .btn-kaiyun-outline {
            background-color: transparent;
            color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
        }
        
        .btn-kaiyun-outline:hover,
        .btn-kaiyun-outline:active,
        .btn-kaiyun-outline:focus {
            background-color: var(--kaiyun-black);
            border-color: var(--kaiyun-black);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        
        .btn-kaiyun-light {
            background-color: #FFFFFF;
            color: var(--kaiyun-black);
            border-color: #FFFFFF;
        }
        
        .btn-kaiyun-light:hover {
            background-color: var(--kaiyun-copper);
            border-color: var(--kaiyun-copper);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        
        .badge-kaiyun {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            background-color: var(--kaiyun-soft);
            color: var(--kaiyun-black);
            border: 1px solid var(--kaiyun-border);
        }
        
        .badge-kaiyun.copper {
            background-color: rgba(185, 120, 58, 0.12);
            color: var(--kaiyun-copper-dark);
            border-color: rgba(185, 120, 58, 0.25);
        }
        
        .card-kaiyun {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            box-shadow: var(--kaiyun-shadow-soft);
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
            overflow: hidden;
        }
        
        .card-kaiyun:hover {
            transform: translateY(-5px);
            box-shadow: var(--kaiyun-shadow-hover);
            border-color: rgba(185, 120, 58, 0.2);
        }
        
        .navbar-kaiyun {
            background: rgba(245, 242, 236, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--kaiyun-border);
            padding: 0;
            height: 70px;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 4px 20px rgba(25, 27, 31, 0.04);
        }
        
        .navbar-kaiyun .navbar-brand {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--kaiyun-black);
            letter-spacing: 0.02em;
            padding: 0;
            margin-right: 2rem;
        }
        
        .navbar-kaiyun .navbar-brand:hover {
            color: var(--kaiyun-copper);
        }
        
        .navbar-kaiyun .nav-link {
            font-family: var(--font-ui);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--kaiyun-sage);
            padding: 0.5rem 1rem;
            margin: 0 0.2rem;
            border-radius: 999px;
            transition: all var(--kaiyun-transition);
        }
        
        .navbar-kaiyun .nav-link:hover,
        .navbar-kaiyun .nav-link:focus {
            color: var(--kaiyun-black);
            background: var(--kaiyun-soft);
        }
        
        .navbar-kaiyun .nav-link.active {
            color: var(--kaiyun-copper-dark);
            background: rgba(185, 120, 58, 0.1);
            font-weight: 700;
        }
        
        .navbar-kaiyun .search-wrap {
            display: flex;
            align-items: center;
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 999px;
            padding: 0 12px;
            height: 42px;
            margin-right: 16px;
            width: 240px;
            transition: border-color var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
        }
        
        .navbar-kaiyun .search-wrap:focus-within {
            border-color: var(--kaiyun-copper);
            box-shadow: 0 0 0 3px rgba(185, 120, 58, 0.15);
        }
        
        .navbar-kaiyun .search-wrap i {
            color: var(--kaiyun-sage);
            font-size: 1rem;
            margin-right: 8px;
        }
        
        .navbar-kaiyun .search-wrap input {
            border: none;
            outline: none;
            background: transparent;
            font-family: var(--font-ui);
            font-size: 0.9rem;
            color: var(--kaiyun-black);
            width: 100%;
        }
        
        .navbar-kaiyun .search-wrap input::placeholder {
            color: rgba(108, 119, 112, 0.8);
        }
        
        .navbar-toggler {
            border: none;
            color: var(--kaiyun-black);
            font-size: 1.6rem;
            padding: 0.25rem 0.5rem;
            background: transparent;
        }
        
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--kaiyun-copper);
        }
        
        .footer-kaiyun {
            background-color: var(--kaiyun-black);
            color: rgba(245, 242, 236, 0.72);
            padding: 56px 0 20px;
            position: relative;
            z-index: 10;
        }
        
        .footer-kaiyun .footer-brand {
            font-family: var(--font-serif);
            font-size: 1.6rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        
        .footer-kaiyun h5 {
            font-family: var(--font-ui);
            font-weight: 600;
            font-size: 0.95rem;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        
        .footer-kaiyun ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-kaiyun ul li {
            margin-bottom: 10px;
        }
        
        .footer-kaiyun ul li a {
            color: rgba(245, 242, 236, 0.6);
            transition: color var(--kaiyun-transition);
            font-size: 0.9rem;
        }
        
        .footer-kaiyun ul li a:hover {
            color: var(--kaiyun-copper);
        }
        
        .footer-kaiyun .footer-bottom {
            border-top: 1px solid rgba(245, 242, 236, 0.12);
            margin-top: 40px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(245, 242, 236, 0.45);
        }
        
        .footer-kaiyun .footer-bottom a {
            color: rgba(245, 242, 236, 0.45);
            margin-left: 16px;
            transition: color var(--kaiyun-transition);
        }
        
        .footer-kaiyun .footer-bottom a:hover {
            color: var(--kaiyun-copper);
        }
        
        .category-hero {
            background: linear-gradient(135deg, rgba(25,27,31,0.78) 0%, rgba(25,27,31,0.55) 60%, rgba(25,27,31,0.42) 100%),
                        url('/assets/images/4d02da163166d280.webp') center center / cover no-repeat;
            padding: 72px 0 56px;
            position: relative;
            color: #FFFFFF;
        }
        
        .breadcrumb-kaiyun {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
        }
        
        .breadcrumb-kaiyun li {
            display: flex;
            align-items: center;
        }
        
        .breadcrumb-kaiyun li + li::before {
            content: '/';
            margin: 0 8px;
            color: rgba(255,255,255,0.45);
        }
        
        .breadcrumb-kaiyun a {
            color: rgba(255,255,255,0.7);
            transition: color var(--kaiyun-transition);
        }
        
        .breadcrumb-kaiyun a:hover {
            color: var(--kaiyun-copper);
        }
        
        .breadcrumb-kaiyun .current {
            color: #FFFFFF;
            font-weight: 500;
            pointer-events: none;
        }
        
        .category-hero h1 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: clamp(28px, 4.5vw, 46px);
            line-height: 1.25;
            color: #FFFFFF;
            margin-bottom: 16px;
            max-width: 750px;
        }
        
        .category-hero .lead {
            font-family: var(--font-sans);
            font-weight: 300;
            font-size: 1.05rem;
            color: rgba(255,255,255,0.82);
            max-width: 680px;
            line-height: 1.85;
            margin-bottom: 24px;
        }
        
        .filter-bar {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            box-shadow: var(--kaiyun-shadow-soft);
            padding: 18px 20px;
            margin-top: -28px;
            position: relative;
            z-index: 5;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
        }
        
        .filter-bar .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        
        .filter-tag {
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            background: var(--kaiyun-bone);
            color: var(--kaiyun-sage);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--kaiyun-transition);
        }
        
        .filter-tag:hover {
            color: var(--kaiyun-black);
            border-color: var(--kaiyun-border);
        }
        
        .filter-tag.active {
            background: var(--kaiyun-black);
            color: #FFFFFF;
            border-color: var(--kaiyun-black);
        }
        
        .sort-select-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .sort-select-wrap label {
            font-size: 0.85rem;
            color: var(--kaiyun-sage);
            white-space: nowrap;
        }
        
        .sort-select {
            border: 1px solid var(--kaiyun-border);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 0.85rem;
            color: var(--kaiyun-black);
            background-color: #FFFFFF;
            outline: none;
            cursor: pointer;
        }
        
        .product-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-card);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-soft);
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
        }
        
        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        
        .product-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            height: 240px;
            background: var(--kaiyun-soft);
        }
        
        .product-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        
        .product-card:hover .card-img-wrap img {
            transform: scale(1.03);
        }
        
        .product-card .badge {
            position: absolute;
            top: 16px;
            left: 16px;
        }
        
        .product-card .card-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        
        .product-card .product-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--kaiyun-black);
            margin-bottom: 6px;
        }
        
        .product-card .product-desc {
            font-size: 0.9rem;
            color: var(--kaiyun-sage);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }
        
        .product-card .price {
            font-family: var(--font-ui);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--kaiyun-copper-dark);
            letter-spacing: 0.02em;
            margin-bottom: 14px;
        }
        
        .hot-list-card {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            padding: 14px 18px;
            box-shadow: var(--kaiyun-shadow-soft);
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
        }
        
        .hot-list-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        
        .hot-list-card .rank {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.8rem;
            color: var(--kaiyun-copper);
            line-height: 1;
            min-width: 44px;
        }
        
        .hot-list-card img {
            width: 72px;
            height: 72px;
            object-fit: cover;
            border-radius: 12px;
        }
        
        .hot-list-card .hot-info {
            flex: 1;
        }
        
        .hot-list-card .hot-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--kaiyun-black);
            margin-bottom: 2px;
        }
        
        .hot-list-card .hot-price {
            font-family: var(--font-ui);
            font-weight: 700;
            color: var(--kaiyun-copper-dark);
            font-size: 0.95rem;
        }
        
        .guide-img {
            border-radius: var(--kaiyun-radius-card);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-soft);
        }
        
        .guide-text {
            font-size: 1rem;
            color: var(--kaiyun-sage);
            line-height: 1.9;
        }
        
        .commitment-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid var(--kaiyun-border);
        }
        
        .commitment-item:last-child {
            border-bottom: none;
        }
        
        .commitment-item .icon-circle {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(185, 120, 58, 0.12);
            color: var(--kaiyun-copper-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        
        .commitment-item h4 {
            font-family: var(--font-ui);
            font-weight: 600;
            font-size: 1rem;
            color: var(--kaiyun-black);
            margin: 0 0 2px;
        }
        
        .commitment-item p {
            font-size: 0.9rem;
            color: var(--kaiyun-sage);
            margin: 0;
            line-height: 1.6;
        }
        
        .faq-kaiyun .accordion-item {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 16px !important;
            margin-bottom: 12px;
            box-shadow: var(--kaiyun-shadow-soft);
        }
        
        .faq-kaiyun .accordion-button {
            background: transparent;
            font-family: var(--font-ui);
            font-weight: 500;
            color: var(--kaiyun-black);
            font-size: 1rem;
            padding: 18px 20px;
            border-radius: 16px !important;
        }
        
        .faq-kaiyun .accordion-button:not(.collapsed) {
            background: rgba(185, 120, 58, 0.06);
            color: var(--kaiyun-copper-dark);
            box-shadow: none;
        }
        
        .faq-kaiyun .accordion-button:focus {
            box-shadow: none;
            outline: 3px solid var(--kaiyun-copper);
            outline-offset: 2px;
        }
        
        .faq-kaiyun .accordion-body {
            font-size: 0.95rem;
            color: var(--kaiyun-sage);
            line-height: 1.8;
            padding: 16px 20px 20px;
        }
        
        .article-mini-card {
            background: #FFFFFF;
            border: 1px solid var(--kaiyun-border);
            border-radius: 18px;
            padding: 20px;
            box-shadow: var(--kaiyun-shadow-soft);
            height: 100%;
            transition: transform var(--kaiyun-transition), box-shadow var(--kaiyun-transition);
        }
        
        .article-mini-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--kaiyun-shadow-hover);
        }
        
        .article-mini-card .article-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--kaiyun-black);
            margin-bottom: 8px;
            line-height: 1.5;
        }
        
        .article-mini-card .article-excerpt {
            font-size: 0.85rem;
            color: var(--kaiyun-sage);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        
        .bottom-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--kaiyun-black);
            color: #FFFFFF;
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 -8px 30px rgba(25, 27, 31, 0.18);
            z-index: 1040;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .bottom-cta-bar .cta-text {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.85);
            letter-spacing: 0.04em;
        }
        
        .bottom-cta-bar .btn {
            margin-left: auto;
        }
        
        @media (max-width: 991.98px) {
            .navbar-kaiyun .search-wrap {
                width: 180px;
                margin-right: 8px;
            }
            .navbar-kaiyun .navbar-brand {
                font-size: 1.3rem;
                margin-right: 1rem;
            }
            .navbar-kaiyun .nav-link {
                font-size: 0.9rem;
                padding: 0.5rem 0.8rem;
            }
        }
        
        @media (max-width: 767.98px) {
            .navbar-kaiyun {
                height: auto;
                padding: 10px 0;
            }
            .navbar-kaiyun .container-custom {
                flex-wrap: nowrap;
            }
            .navbar-kaiyun .navbar-brand {
                font-size: 1.3rem;
            }
            .navbar-collapse {
                background: var(--kaiyun-bone);
                border-radius: 16px;
                margin-top: 10px;
                padding: 16px;
                box-shadow: var(--kaiyun-shadow-soft);
            }
            .navbar-kaiyun .search-wrap {
                width: 100%;
                margin: 10px 0 0;
            }
            .section-kaiyun {
                padding: 64px 0;
            }
            .category-hero {
                padding: 48px 0 40px;
            }
            .filter-bar {
                padding: 14px;
                margin-top: -20px;
                flex-direction: column;
                align-items: stretch;
            }
            .filter-tag {
                font-size: 0.8rem;
                padding: 5px 12px;
            }
            .sort-select-wrap {
                justify-content: space-between;
            }
            .product-card .card-img-wrap {
                height: 200px;
            }
            .hot-list-card {
                padding: 12px;
            }
            .hot-list-card .rank {
                font-size: 1.4rem;
                min-width: 34px;
            }
            .hot-list-card img {
                width: 56px;
                height: 56px;
            }
            .bottom-cta-bar {
                padding: 10px 16px;
                flex-direction: column;
                align-items: stretch;
                text-align: center;
            }
            .bottom-cta-bar .btn {
                margin-left: 0;
                justify-content: center;
            }
            .footer-kaiyun .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-kaiyun .footer-bottom a {
                margin: 0 8px;
            }
        }
        
        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .lead {
                font-size: 0.95rem;
            }
            .product-card .card-body {
                padding: 16px;
            }
            .product-card .product-title {
                font-size: 1.1rem;
            }
        }
        
        body.with-bottom-cta {
            padding-bottom: 80px;
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}