/* roulang page: index */
:root {
            --kaiyun-primary: #1F4E79;
            --kaiyun-primary-dark: #163b5c;
            --kaiyun-primary-light: #2e6da4;
            --kaiyun-accent: #B99B6B;
            --kaiyun-accent-light: #d5bf9d;
            --kaiyun-bg: #F4F7FB;
            --kaiyun-bg-white: #ffffff;
            --kaiyun-bg-light: #eaf0f7;
            --kaiyun-text: #1c2a36;
            --kaiyun-text-muted: #5e7083;
            --kaiyun-text-light: #8a9aa8;
            --kaiyun-border: #dfe7ef;
            --kaiyun-border-light: #e9eff5;
            --kaiyun-radius-sm: 8px;
            --kaiyun-radius-md: 12px;
            --kaiyun-radius-lg: 16px;
            --kaiyun-shadow-sm: 0 2px 10px rgba(30, 60, 100, 0.06);
            --kaiyun-shadow-md: 0 8px 24px rgba(30, 60, 100, 0.08);
            --kaiyun-shadow-lg: 0 14px 40px rgba(30, 60, 100, 0.12);
            --kaiyun-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --kaiyun-font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --kaiyun-section-padding: 88px 0;
            --kaiyun-section-padding-mobile: 56px 0;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--kaiyun-font);
            font-size: 16px;
            line-height: 1.85;
            color: var(--kaiyun-text);
            background-color: var(--kaiyun-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--kaiyun-primary-dark);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .site-container {
            max-width: 1140px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .site-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

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

        @media (max-width: 768px) {
            .section-padding {
                padding: var(--kaiyun-section-padding-mobile);
            }
        }

        .section-subtitle {
            font-size: 0.9rem;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--kaiyun-accent);
            font-weight: 700;
            margin-bottom: 12px;
            display: inline-block;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            line-height: 1.35;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-text-muted);
            max-width: 720px;
            line-height: 1.9;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
        }

        .btn-kaiyun-primary {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.25);
        }

        .btn-kaiyun-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(31, 78, 121, 0.2);
        }

        .btn-kaiyun-secondary {
            background-color: transparent;
            color: var(--kaiyun-primary);
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-kaiyun-secondary:hover,
        .btn-kaiyun-secondary:focus {
            background-color: var(--kaiyun-primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.15);
        }

        .btn-kaiyun-accent {
            background-color: var(--kaiyun-accent);
            color: #fff;
            border: 2px solid var(--kaiyun-accent);
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .btn-kaiyun-accent:hover,
        .btn-kaiyun-accent:focus {
            background-color: #a58552;
            border-color: #a58552;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(185, 155, 107, 0.3);
        }

        /* Header Navigation */
        .site-header {
            background-color: #fff;
            border-bottom: 1px solid var(--kaiyun-border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 8px rgba(30, 60, 100, 0.05);
        }

        .site-header .navbar {
            padding: 14px 0;
            background-color: #fff;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--kaiyun-primary);
            letter-spacing: 1px;
        }

        .site-header .navbar-brand span {
            font-size: 0.75rem;
            font-weight: 400;
            letter-spacing: 2px;
            color: var(--kaiyun-accent);
            text-transform: uppercase;
        }

        .site-header .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--kaiyun-text);
            padding: 8px 14px !important;
            border-radius: 6px;
            transition: var(--kaiyun-transition);
            letter-spacing: 0.3px;
        }

        .site-header .nav-link:hover,
        .site-header .nav-link:focus {
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
        }

        .site-header .nav-link.active {
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
            font-weight: 600;
        }

        .site-header .navbar-toggler {
            border: 1px solid var(--kaiyun-border);
            border-radius: 6px;
            padding: 6px 10px;
            color: var(--kaiyun-primary);
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.15);
        }

        .site-header .btn-header-cta {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: var(--kaiyun-transition);
            border: 2px solid var(--kaiyun-primary);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .site-header .btn-header-cta:hover,
        .site-header .btn-header-cta:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }

        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background-color: #fff;
                border-radius: 12px;
                padding: 16px;
                margin-top: 10px;
                box-shadow: var(--kaiyun-shadow-md);
                border: 1px solid var(--kaiyun-border-light);
            }
            .site-header .nav-link {
                padding: 10px 12px !important;
            }
            .site-header .btn-header-cta {
                width: 100%;
                justify-content: center;
                margin-top: 8px;
            }
        }

        /* Hero Section - Resource Download Style */
        .hero-section {
            background-color: var(--kaiyun-bg-white);
            border-bottom: 1px solid var(--kaiyun-border-light);
            position: relative;
            overflow: hidden;
            padding: 70px 0 80px;
        }

        .hero-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, var(--kaiyun-primary), var(--kaiyun-accent), var(--kaiyun-primary));
        }

        .hero-bg-pattern {
            position: absolute;
            top: 0;
            right: 0;
            width: 520px;
            height: 100%;
            background-image: url('/assets/images/5dbf53b1e9d27379.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
        }

        .hero-section .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .hero-section .hero-badge {
            display: inline-block;
            background-color: var(--kaiyun-bg-light);
            color: var(--kaiyun-primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: 1px;
            margin-bottom: 20px;
            border: 1px solid rgba(31, 78, 121, 0.15);
        }

        .hero-section h1 {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 18px;
            letter-spacing: 1px;
            line-height: 1.3;
        }

        .hero-section .hero-desc {
            font-size: 1.1rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.9;
            margin-bottom: 28px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-search-wrapper {
            max-width: 560px;
            margin: 0 auto 24px;
            position: relative;
        }

        .hero-search-wrapper .form-control {
            border-radius: 50px;
            padding: 15px 20px 15px 48px;
            border: 2px solid var(--kaiyun-border);
            font-size: 0.95rem;
            background-color: #fff;
            transition: var(--kaiyun-transition);
            box-shadow: var(--kaiyun-shadow-sm);
        }

        .hero-search-wrapper .form-control:focus {
            border-color: var(--kaiyun-primary);
            box-shadow: 0 0 0 4px rgba(31, 78, 121, 0.1);
        }

        .hero-search-wrapper .search-icon {
            position: absolute;
            left: 18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--kaiyun-text-light);
            font-size: 1.1rem;
            pointer-events: none;
        }

        .hero-quick-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
            margin-top: 14px;
        }

        .hero-quick-tags .tag-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background-color: #fff;
            border: 1px solid var(--kaiyun-border);
            border-radius: 50px;
            padding: 6px 14px;
            font-size: 0.85rem;
            color: var(--kaiyun-text);
            font-weight: 500;
            transition: var(--kaiyun-transition);
        }

        .hero-quick-tags .tag-link:hover {
            border-color: var(--kaiyun-primary);
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
            transform: translateY(-1px);
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 48px 0 56px;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-section .hero-desc {
                font-size: 0.95rem;
            }
            .hero-search-wrapper .form-control {
                padding: 12px 16px 12px 40px;
                font-size: 0.9rem;
            }
        }

        /* Trust Signal Bar */
        .trust-bar {
            background-color: var(--kaiyun-primary);
            color: #fff;
            padding: 20px 0;
            border-bottom: 3px solid var(--kaiyun-accent);
        }

        .trust-bar .trust-items {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 32px;
        }

        .trust-bar .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.92rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .trust-bar .trust-item i {
            font-size: 1.2rem;
            color: var(--kaiyun-accent-light);
        }

        @media (max-width: 768px) {
            .trust-bar .trust-items {
                gap: 16px;
                flex-direction: column;
                align-items: flex-start;
            }
            .trust-bar .trust-item {
                font-size: 0.85rem;
                white-space: normal;
            }
        }

        /* Category Matrix */
        .category-matrix .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .category-matrix .matrix-card {
            background: #fff;
            border-radius: var(--kaiyun-radius-md);
            padding: 28px 24px;
            box-shadow: var(--kaiyun-shadow-sm);
            transition: var(--kaiyun-transition);
            border: 1px solid var(--kaiyun-border-light);
            display: flex;
            flex-direction: column;
            gap: 12px;
            min-height: 180px;
        }

        .category-matrix .matrix-card:hover {
            box-shadow: var(--kaiyun-shadow-md);
            transform: translateY(-2px);
            border-color: rgba(31, 78, 121, 0.2);
        }

        .category-matrix .matrix-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background-color: var(--kaiyun-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--kaiyun-primary);
        }

        .category-matrix .matrix-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0;
            color: var(--kaiyun-text);
        }

        .category-matrix .matrix-card p {
            font-size: 0.88rem;
            color: var(--kaiyun-text-muted);
            margin: 0;
            line-height: 1.7;
        }

        .category-matrix .matrix-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--kaiyun-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        @media (max-width: 992px) {
            .category-matrix .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .category-matrix .matrix-grid {
                grid-template-columns: 1fr;
            }
            .category-matrix .matrix-card {
                min-height: auto;
            }
        }

        /* Feature Cards */
        .feature-cards .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .feature-cards .feature-card {
            background: #fff;
            border-radius: var(--kaiyun-radius-lg);
            padding: 32px 28px;
            box-shadow: var(--kaiyun-shadow-sm);
            transition: var(--kaiyun-transition);
            border: 1px solid var(--kaiyun-border-light);
            position: relative;
            overflow: hidden;
        }

        .feature-cards .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--kaiyun-accent);
            opacity: 0;
            transition: var(--kaiyun-transition);
        }

        .feature-cards .feature-card:hover::before {
            opacity: 1;
        }

        .feature-cards .feature-card:hover {
            box-shadow: var(--kaiyun-shadow-md);
            transform: translateY(-3px);
        }

        .feature-cards .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background-color: var(--kaiyun-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--kaiyun-primary);
            margin-bottom: 16px;
        }

        .feature-cards .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--kaiyun-text);
        }

        .feature-cards .feature-card p {
            font-size: 0.92rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.8;
            margin-bottom: 0;
        }

        @media (max-width: 992px) {
            .feature-cards .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .feature-cards .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-cards .feature-card {
                padding: 24px 20px;
            }
        }

        /* Content List & Cards */
        .content-list .list-wrapper {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .content-list .content-card {
            background: #fff;
            border-radius: var(--kaiyun-radius-md);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-sm);
            transition: var(--kaiyun-transition);
            border: 1px solid var(--kaiyun-border-light);
            display: flex;
            flex-direction: column;
        }

        .content-list .content-card:hover {
            box-shadow: var(--kaiyun-shadow-md);
            transform: translateY(-3px);
        }

        .content-list .card-img-wrap {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--kaiyun-bg-light);
        }

        .content-list .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--kaiyun-transition);
        }

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

        .content-list .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .content-list .card-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
            padding: 3px 10px;
            border-radius: 4px;
            display: inline-block;
            width: fit-content;
            letter-spacing: 0.5px;
        }

        .content-list .card-title-text {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            line-height: 1.5;
        }

        .content-list .card-desc {
            font-size: 0.88rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.75;
            flex: 1;
        }

        .content-list .card-meta {
            font-size: 0.8rem;
            color: var(--kaiyun-text-light);
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 8px;
            border-top: 1px solid var(--kaiyun-border-light);
        }

        @media (max-width: 992px) {
            .content-list .list-wrapper {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .content-list .list-wrapper {
                grid-template-columns: 1fr;
            }
        }

        /* Image + Text Split */
        .split-section {
            background-color: #fff;
        }

        .split-section .split-row {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 48px;
            align-items: center;
        }

        .split-section .split-row.reverse {
            grid-template-columns: 7fr 5fr;
        }

        .split-section .split-image {
            border-radius: var(--kaiyun-radius-lg);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-md);
            aspect-ratio: 4 / 3;
        }

        .split-section .split-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .split-section .split-text h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .split-section .split-text p {
            color: var(--kaiyun-text-muted);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .split-section .split-text .highlight-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }

        .split-section .split-text .highlight-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 10px;
            color: var(--kaiyun-text);
            font-size: 0.95rem;
        }

        .split-section .split-text .highlight-list i {
            color: var(--kaiyun-accent);
            font-size: 1.1rem;
            margin-top: 4px;
        }

        @media (max-width: 992px) {
            .split-section .split-row,
            .split-section .split-row.reverse {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* Comparison Table */
        .comparison-section .comparison-wrapper {
            margin-top: 32px;
            overflow-x: auto;
        }

        .comparison-section .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            min-width: 720px;
        }

        .comparison-section .comparison-table th,
        .comparison-section .comparison-table td {
            padding: 18px 20px;
            border-bottom: 1px solid var(--kaiyun-border-light);
            text-align: left;
            vertical-align: middle;
        }

        .comparison-section .comparison-table thead th {
            background-color: var(--kaiyun-primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .comparison-section .comparison-table thead th:first-child {
            border-radius: 8px 0 0 0;
        }

        .comparison-section .comparison-table thead th:last-child {
            border-radius: 0 8px 0 0;
        }

        .comparison-section .comparison-table tbody tr:hover {
            background-color: var(--kaiyun-bg-light);
        }

        .comparison-section .comparison-table td {
            font-size: 0.92rem;
            color: var(--kaiyun-text-muted);
        }

        .comparison-section .comparison-table td:first-child {
            font-weight: 600;
            color: var(--kaiyun-text);
            white-space: nowrap;
        }

        .comparison-section .check-icon {
            color: #2d7d46;
            font-size: 1.1rem;
        }

        .comparison-section .dash-icon {
            color: var(--kaiyun-text-light);
        }

        @media (max-width: 768px) {
            .comparison-section .comparison-table {
                min-width: 600px;
            }
            .comparison-section .comparison-table th,
            .comparison-section .comparison-table td {
                padding: 12px 14px;
                font-size: 0.85rem;
            }
        }

        /* Ranking Section */
        .ranking-section .ranking-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 32px;
        }

        .ranking-section .ranking-card {
            background: #fff;
            border-radius: var(--kaiyun-radius-md);
            padding: 24px;
            box-shadow: var(--kaiyun-shadow-sm);
            border: 1px solid var(--kaiyun-border-light);
            transition: var(--kaiyun-transition);
        }

        .ranking-section .ranking-card:hover {
            box-shadow: var(--kaiyun-shadow-md);
        }

        .ranking-section .ranking-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .ranking-section .ranking-header i {
            color: var(--kaiyun-accent);
            font-size: 1.5rem;
        }

        .ranking-section .ranking-header h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0;
            color: var(--kaiyun-text);
        }

        .ranking-section .ranking-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .ranking-section .ranking-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px dashed var(--kaiyun-border-light);
            font-size: 0.92rem;
            color: var(--kaiyun-text-muted);
        }

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

        .ranking-section .rank-number {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background-color: var(--kaiyun-bg-light);
            color: var(--kaiyun-primary);
            font-weight: 700;
            font-size: 0.8rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .ranking-section .ranking-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Resource Center */
        .resource-center .resource-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 32px;
        }

        .resource-center .resource-item {
            background: #fff;
            border-radius: var(--kaiyun-radius-md);
            padding: 20px;
            box-shadow: var(--kaiyun-shadow-sm);
            border: 1px solid var(--kaiyun-border-light);
            transition: var(--kaiyun-transition);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

        .resource-center .resource-item:hover {
            box-shadow: var(--kaiyun-shadow-md);
            transform: translateY(-2px);
            border-color: rgba(31, 78, 121, 0.2);
        }

        .resource-center .resource-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: var(--kaiyun-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--kaiyun-primary);
        }

        .resource-center .resource-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin: 0;
            color: var(--kaiyun-text);
        }

        .resource-center .resource-item span {
            font-size: 0.8rem;
            color: var(--kaiyun-text-light);
        }

        @media (max-width: 992px) {
            .resource-center .resource-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .resource-center .resource-grid {
                grid-template-columns: 1fr;
            }
        }

        /* News Section */
        .news-section .news-list {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-section .news-item {
            background: #fff;
            border-radius: var(--kaiyun-radius-md);
            padding: 20px 24px;
            box-shadow: var(--kaiyun-shadow-sm);
            border: 1px solid var(--kaiyun-border-light);
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: var(--kaiyun-transition);
        }

        .news-section .news-item:hover {
            box-shadow: var(--kaiyun-shadow-md);
            transform: translateX(2px);
        }

        .news-section .news-date {
            min-width: 80px;
            text-align: center;
            padding: 8px 12px;
            background-color: var(--kaiyun-bg-light);
            border-radius: 8px;
            font-weight: 700;
            color: var(--kaiyun-primary);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .news-section .news-content h3 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--kaiyun-text);
            line-height: 1.5;
        }

        .news-section .news-content p {
            font-size: 0.9rem;
            color: var(--kaiyun-text-muted);
            margin: 0 0 8px;
            line-height: 1.75;
        }

        .news-section .news-content a {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--kaiyun-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        @media (max-width: 576px) {
            .news-section .news-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .news-section .news-date {
                min-width: auto;
                width: fit-content;
            }
        }

        /* Brand Intro Section */
        .brand-intro {
            background-color: var(--kaiyun-primary);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .brand-intro::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background-color: rgba(185, 155, 107, 0.15);
            pointer-events: none;
        }

        .brand-intro::after {
            content: "";
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }

        .brand-intro .brand-row {
            display: grid;
            grid-template-columns: 6fr 6fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .brand-intro .brand-text h2 {
            color: #fff;
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .brand-intro .brand-text p {
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.9;
            margin-bottom: 12px;
        }

        .brand-intro .brand-image {
            border-radius: var(--kaiyun-radius-lg);
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
            aspect-ratio: 4 / 3;
        }

        .brand-intro .brand-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        @media (max-width: 992px) {
            .brand-intro .brand-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* FAQ Section */
        .faq-section .accordion-item {
            border: 1px solid var(--kaiyun-border-light);
            border-radius: var(--kaiyun-radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-sm);
            background-color: #fff;
        }

        .faq-section .accordion-button {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--kaiyun-text);
            background-color: #fff;
            border: none;
            box-shadow: none !important;
            transition: var(--kaiyun-transition);
        }

        .faq-section .accordion-button:not(.collapsed) {
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
        }

        .faq-section .accordion-button:focus {
            border: none;
            box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.1);
        }

        .faq-section .accordion-body {
            padding: 16px 24px 20px;
            font-size: 0.92rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.85;
            border-top: 1px solid var(--kaiyun-border-light);
        }

        /* Security & Compliance */
        .security-section .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 32px;
        }

        .security-section .security-item {
            background: #fff;
            border-radius: var(--kaiyun-radius-md);
            padding: 20px;
            box-shadow: var(--kaiyun-shadow-sm);
            border: 1px solid var(--kaiyun-border-light);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            transition: var(--kaiyun-transition);
        }

        .security-section .security-item:hover {
            box-shadow: var(--kaiyun-shadow-md);
        }

        .security-section .security-item i {
            font-size: 1.4rem;
            color: var(--kaiyun-primary);
            flex-shrink: 0;
            margin-top: 4px;
        }

        .security-section .security-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin: 0 0 4px;
            color: var(--kaiyun-text);
        }

        .security-section .security-item p {
            font-size: 0.85rem;
            color: var(--kaiyun-text-muted);
            margin: 0;
            line-height: 1.7;
        }

        @media (max-width: 992px) {
            .security-section .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .security-section .security-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Tag Cloud */
        .tag-cloud-section .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .tag-cloud-section .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: #fff;
            border: 1px solid var(--kaiyun-border);
            border-radius: 50px;
            padding: 8px 18px;
            font-size: 0.88rem;
            color: var(--kaiyun-text);
            font-weight: 500;
            transition: var(--kaiyun-transition);
        }

        .tag-cloud-section .tag-pill:hover {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border-color: var(--kaiyun-primary);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(31, 78, 121, 0.2);
        }

        /* Floating CTA Bar */
        .floating-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: #fff;
            border-top: 1px solid var(--kaiyun-border-light);
            box-shadow: 0 -4px 20px rgba(30, 60, 100, 0.1);
            z-index: 1040;
            padding: 14px 0;
            transform: translateY(0);
            transition: transform 0.3s ease;
        }

        .floating-cta .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .floating-cta .cta-text {
            font-size: 0.92rem;
            color: var(--kaiyun-text);
            font-weight: 500;
        }

        .floating-cta .cta-text strong {
            color: var(--kaiyun-primary);
        }

        .floating-cta .cta-actions {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .floating-cta {
                position: static;
                box-shadow: none;
                border-top: 1px solid var(--kaiyun-border-light);
                padding: 20px 0;
                background-color: var(--kaiyun-bg-light);
            }
            .floating-cta .cta-inner {
                flex-direction: column;
                text-align: center;
                gap: 14px;
            }
            .floating-cta .cta-actions {
                width: 100%;
                justify-content: center;
                flex-wrap: wrap;
            }
        }

        /* Footer */
        .site-footer {
            background-color: #172b3a;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            margin-bottom: 72px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .site-footer .footer-brand span {
            font-size: 0.75rem;
            letter-spacing: 2px;
            color: var(--kaiyun-accent-light);
            display: block;
            margin-top: 4px;
            font-weight: 400;
        }

        .site-footer .footer-desc {
            font-size: 0.88rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 8px;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            transition: var(--kaiyun-transition);
        }

        .site-footer .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: var(--kaiyun-transition);
        }

        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 992px) {
            .site-footer {
                margin-bottom: 0;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .site-footer {
                padding: 40px 0 20px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        /* Breadcrumb */
        .breadcrumb-section {
            background-color: #fff;
            border-bottom: 1px solid var(--kaiyun-border-light);
            padding: 14px 0;
        }

        .breadcrumb-section .breadcrumb {
            margin: 0;
            padding: 0;
            background: transparent;
            font-size: 0.85rem;
        }

        .breadcrumb-section .breadcrumb-item a {
            color: var(--kaiyun-text-muted);
        }

        .breadcrumb-section .breadcrumb-item a:hover {
            color: var(--kaiyun-primary);
        }

        .breadcrumb-section .breadcrumb-item.active {
            color: var(--kaiyun-text-light);
        }

        /* Accessibility */
        :focus-visible {
            outline: 3px solid rgba(31, 78, 121, 0.4);
            outline-offset: 2px;
        }

        /* Utility */
        .text-accent {
            color: var(--kaiyun-accent);
        }

        .bg-light-section {
            background-color: var(--kaiyun-bg);
        }

        .bg-white-section {
            background-color: #fff;
        }

/* roulang page: category2 */
:root {
            --kaiyun-primary: #1F4E79;
            --kaiyun-primary-dark: #163b5c;
            --kaiyun-primary-light: #2e6da4;
            --kaiyun-accent: #B99B6B;
            --kaiyun-accent-light: #d5bf9d;
            --kaiyun-bg: #F4F7FB;
            --kaiyun-bg-white: #ffffff;
            --kaiyun-bg-light: #eaf0f7;
            --kaiyun-text: #1c2a36;
            --kaiyun-text-muted: #5e7083;
            --kaiyun-text-light: #8a9aa8;
            --kaiyun-border: #dfe7ef;
            --kaiyun-border-light: #e9eff5;
            --kaiyun-radius-sm: 8px;
            --kaiyun-radius-md: 12px;
            --kaiyun-radius-lg: 16px;
            --kaiyun-shadow-sm: 0 2px 10px rgba(30, 60, 100, 0.06);
            --kaiyun-shadow-md: 0 8px 24px rgba(30, 60, 100, 0.08);
            --kaiyun-shadow-lg: 0 14px 40px rgba(30, 60, 100, 0.12);
            --kaiyun-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --kaiyun-font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --kaiyun-section-padding: 88px 0;
            --kaiyun-section-padding-mobile: 56px 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--kaiyun-font);
            font-size: 16px;
            line-height: 1.85;
            color: var(--kaiyun-text);
            background-color: var(--kaiyun-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: var(--kaiyun-primary);
            transition: var(--kaiyun-transition);
        }
        a:hover {
            color: var(--kaiyun-primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .site-container {
            max-width: 1140px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-padding {
            padding: var(--kaiyun-section-padding);
        }
        .section-subtitle {
            font-size: 0.9rem;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--kaiyun-accent);
            font-weight: 700;
            margin-bottom: 12px;
            display: inline-block;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            line-height: 1.35;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-text-muted);
            max-width: 720px;
            line-height: 1.9;
        }
        .btn-kaiyun-primary {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.25);
        }
        .btn-kaiyun-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(31, 78, 121, 0.2);
        }
        .btn-kaiyun-secondary {
            background-color: transparent;
            color: var(--kaiyun-primary);
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .btn-kaiyun-secondary:hover,
        .btn-kaiyun-secondary:focus {
            background-color: var(--kaiyun-primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.15);
        }
        .btn-kaiyun-accent {
            background-color: var(--kaiyun-accent);
            color: #fff;
            border: 2px solid var(--kaiyun-accent);
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .btn-kaiyun-accent:hover,
        .btn-kaiyun-accent:focus {
            background-color: #a58552;
            border-color: #a58552;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(185, 155, 107, 0.3);
        }
        /* Header Navigation */
        .site-header {
            background-color: #fff;
            box-shadow: 0 2px 12px rgba(30, 60, 100, 0.06);
            position: sticky;
            top: 0;
            z-index: 1030;
            padding: 0;
        }
        .navbar {
            padding: 0;
        }
        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--kaiyun-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 1px;
        }
        .navbar-brand span {
            font-size: 0.7rem;
            font-weight: 400;
            letter-spacing: 1.5px;
            color: var(--kaiyun-accent);
            text-transform: uppercase;
        }
        .navbar-nav .nav-link {
            color: var(--kaiyun-text);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 12px 14px !important;
            position: relative;
            transition: var(--kaiyun-transition);
            letter-spacing: 0.3px;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: var(--kaiyun-primary);
        }
        .navbar-nav .nav-link.active {
            color: var(--kaiyun-primary);
            font-weight: 600;
        }
        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--kaiyun-accent);
            border-radius: 2px;
        }
        .btn-header-cta {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--kaiyun-transition);
            white-space: nowrap;
        }
        .btn-header-cta:hover,
        .btn-header-cta:focus {
            background-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(31, 78, 121, 0.25);
        }
        .navbar-toggler {
            border: none;
            font-size: 1.6rem;
            color: var(--kaiyun-primary);
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        /* Breadcrumb */
        .breadcrumb-section {
            background-color: var(--kaiyun-bg-light);
            border-bottom: 1px solid var(--kaiyun-border-light);
            padding: 16px 0;
        }
        .breadcrumb {
            margin: 0;
            background: transparent;
            font-size: 0.85rem;
            color: var(--kaiyun-text-muted);
        }
        .breadcrumb a {
            color: var(--kaiyun-text-muted);
        }
        .breadcrumb a:hover {
            color: var(--kaiyun-primary);
        }
        .breadcrumb-item + .breadcrumb-item::before {
            content: "›";
            color: var(--kaiyun-text-light);
        }
        /* Brand intro */
        .brand-intro {
            padding: 48px 0 0;
        }
        .brand-intro h1 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            letter-spacing: 0.5px;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .brand-intro .lead {
            font-size: 1.1rem;
            color: var(--kaiyun-text-muted);
            max-width: 780px;
            line-height: 1.9;
        }
        /* Brand cards */
        .brand-grid-section {
            padding: 56px 0;
        }
        .brand-card {
            background: var(--kaiyun-bg-white);
            border-radius: var(--kaiyun-radius-lg);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-sm);
            transition: var(--kaiyun-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--kaiyun-border-light);
        }
        .brand-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--kaiyun-shadow-md);
        }
        .brand-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .brand-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .brand-card .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 4px;
        }
        .brand-card .card-subtitle {
            font-size: 0.8rem;
            color: var(--kaiyun-accent);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .brand-card .card-text {
            font-size: 0.9rem;
            color: var(--kaiyun-text-muted);
            flex: 1;
        }
        .brand-card .card-footer-stats {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid var(--kaiyun-border-light);
            font-size: 0.8rem;
            color: var(--kaiyun-text-light);
        }
        .brand-card .card-tag {
            background-color: var(--kaiyun-bg-light);
            color: var(--kaiyun-primary);
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
        }
        /* Support sections */
        .support-section {
            background-color: #fff;
            border-top: 1px solid var(--kaiyun-border-light);
        }
        .support-quote {
            background-color: var(--kaiyun-bg-light);
            border-left: 4px solid var(--kaiyun-accent);
            padding: 24px;
            border-radius: 0 var(--kaiyun-radius-md) var(--kaiyun-radius-md) 0;
        }
        .support-quote blockquote {
            margin: 0;
            font-size: 1.1rem;
            color: var(--kaiyun-text);
            line-height: 1.9;
            font-style: italic;
        }
        .support-quote figcaption {
            font-size: 0.9rem;
            color: var(--kaiyun-text-muted);
            margin-top: 8px;
            text-align: right;
        }
        .stat-block {
            text-align: center;
            padding: 24px;
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--kaiyun-primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--kaiyun-text-muted);
        }
        .subscribe-section {
            background-color: var(--kaiyun-bg-light);
            border-radius: var(--kaiyun-radius-lg);
            padding: 32px;
        }
        .subscribe-form .form-control {
            border-radius: var(--kaiyun-radius-sm);
            border: 1px solid var(--kaiyun-border);
            padding: 12px 16px;
            font-size: 0.95rem;
        }
        .subscribe-form .form-control:focus {
            border-color: var(--kaiyun-primary);
            box-shadow: 0 0 0 0.2rem rgba(31,78,121,0.15);
        }
        .subscribe-form .btn {
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 24px;
        }
        /* Footer */
        .site-footer {
            background-color: #1c2a36;
            color: #b9c6d3;
            padding: 56px 0 20px;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand span {
            font-size: 0.7rem;
            color: var(--kaiyun-accent-light);
            letter-spacing: 1.5px;
        }
        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: #b9c6d3;
            font-size: 0.9rem;
            transition: var(--kaiyun-transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: #8a9aa8;
        }
        .footer-bottom a {
            color: #8a9aa8;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                padding: 16px;
                border-radius: var(--kaiyun-radius-md);
                box-shadow: var(--kaiyun-shadow-md);
                margin-top: 8px;
            }
            .navbar-nav .nav-link {
                padding: 8px 12px !important;
            }
            .btn-header-cta {
                width: 100%;
                justify-content: center;
                margin-top: 8px;
            }
        }
        @media (max-width: 767.98px) {
            .section-padding {
                padding: var(--kaiyun-section-padding-mobile);
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
            .brand-intro h1 {
                font-size: 1.8rem;
            }
            .site-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
            .brand-card img {
                height: 180px;
            }
        }
        @media (max-width: 520px) {
            .site-container {
                padding-left: 12px;
                padding-right: 12px;
            }
            .btn-kaiyun-primary,
            .btn-kaiyun-secondary {
                padding: 10px 20px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
            --kaiyun-primary: #1F4E79;
            --kaiyun-primary-dark: #163b5c;
            --kaiyun-primary-light: #2e6da4;
            --kaiyun-accent: #B99B6B;
            --kaiyun-accent-light: #d5bf9d;
            --kaiyun-bg: #F4F7FB;
            --kaiyun-bg-white: #ffffff;
            --kaiyun-bg-light: #eaf0f7;
            --kaiyun-text: #1c2a36;
            --kaiyun-text-muted: #5e7083;
            --kaiyun-text-light: #8a9aa8;
            --kaiyun-border: #dfe7ef;
            --kaiyun-border-light: #e9eff5;
            --kaiyun-radius-sm: 8px;
            --kaiyun-radius-md: 12px;
            --kaiyun-radius-lg: 16px;
            --kaiyun-shadow-sm: 0 2px 10px rgba(30, 60, 100, 0.06);
            --kaiyun-shadow-md: 0 8px 24px rgba(30, 60, 100, 0.08);
            --kaiyun-shadow-lg: 0 14px 40px rgba(30, 60, 100, 0.12);
            --kaiyun-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --kaiyun-font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --kaiyun-section-padding: 88px 0;
            --kaiyun-section-padding-mobile: 56px 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--kaiyun-font);
            font-size: 16px;
            line-height: 1.85;
            color: var(--kaiyun-text);
            background-color: var(--kaiyun-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: var(--kaiyun-primary);
            transition: var(--kaiyun-transition);
        }
        a:hover {
            color: var(--kaiyun-primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .site-container {
            max-width: 1140px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-padding {
            padding: var(--kaiyun-section-padding);
        }
        .section-subtitle {
            font-size: 0.9rem;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--kaiyun-accent);
            font-weight: 700;
            margin-bottom: 12px;
            display: inline-block;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            line-height: 1.35;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-text-muted);
            max-width: 720px;
            line-height: 1.9;
        }
        .btn-kaiyun-primary {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.25);
        }
        .btn-kaiyun-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(31, 78, 121, 0.2);
        }
        .btn-kaiyun-secondary {
            background-color: transparent;
            color: var(--kaiyun-primary);
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .btn-kaiyun-secondary:hover,
        .btn-kaiyun-secondary:focus {
            background-color: var(--kaiyun-primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.15);
        }
        .btn-kaiyun-accent {
            background-color: var(--kaiyun-accent);
            color: #fff;
            border: 2px solid var(--kaiyun-accent);
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .btn-kaiyun-accent:hover,
        .btn-kaiyun-accent:focus {
            background-color: #a58552;
            border-color: #a58552;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(185, 155, 107, 0.3);
        }

        /* Header Navigation */
        .site-header {
            background-color: #fff;
            padding: 14px 0;
            border-bottom: 1px solid var(--kaiyun-border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 8px rgba(30, 60, 100, 0.04);
        }
        .site-header .navbar {
            padding: 0;
            background: transparent;
        }
        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--kaiyun-primary);
            letter-spacing: 1px;
            display: flex;
            align-items: baseline;
            gap: 8px;
            margin-right: 32px;
        }
        .navbar-brand span {
            font-size: 0.65rem;
            font-weight: 500;
            letter-spacing: 3px;
            color: var(--kaiyun-text-light);
            text-transform: uppercase;
        }
        .navbar-brand:hover {
            color: var(--kaiyun-primary-dark);
        }
        .site-header .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--kaiyun-text);
            margin: 0 12px;
            padding: 8px 4px;
            position: relative;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .site-header .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--kaiyun-primary);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            transition: var(--kaiyun-transition);
            border-radius: 2px;
        }
        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            width: 100%;
        }
        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: var(--kaiyun-primary);
        }
        .site-header .nav-link.active {
            font-weight: 600;
        }
        .btn-header-cta {
            background-color: var(--kaiyun-accent);
            color: #fff;
            border-radius: var(--kaiyun-radius-sm);
            padding: 9px 18px;
            font-size: 0.88rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--kaiyun-transition);
            white-space: nowrap;
            border: 2px solid var(--kaiyun-accent);
        }
        .btn-header-cta:hover,
        .btn-header-cta:focus {
            background-color: #a58552;
            border-color: #a58552;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(185, 155, 107, 0.25);
        }
        .navbar-toggler {
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-sm);
            padding: 6px 10px;
            font-size: 1.4rem;
            color: var(--kaiyun-primary);
            background: #fff;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.15);
            outline: none;
        }

        /* Breadcrumb */
        .breadcrumb-kaiyun {
            background: transparent;
            padding: 12px 0 0;
            margin-bottom: 0;
            font-size: 0.86rem;
        }
        .breadcrumb-kaiyun .breadcrumb-item + .breadcrumb-item::before {
            content: '\203A';
            color: var(--kaiyun-text-light);
            padding: 0 6px;
        }
        .breadcrumb-kaiyun .breadcrumb-item a {
            color: var(--kaiyun-text-muted);
            font-weight: 500;
        }
        .breadcrumb-kaiyun .breadcrumb-item a:hover {
            color: var(--kaiyun-primary);
        }
        .breadcrumb-kaiyun .breadcrumb-item.active {
            color: var(--kaiyun-primary);
            font-weight: 600;
        }

        /* Category Page Hero - compact variant */
        .category-page-header {
            background: linear-gradient(135deg, #f8fafd 0%, #eaf0f7 100%);
            padding: 52px 0 44px;
            border-bottom: 1px solid var(--kaiyun-border-light);
            position: relative;
            overflow: hidden;
        }
        .category-page-header::before {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(185, 155, 107, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .category-page-header .cat-h1 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .category-page-header .cat-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-text-muted);
            max-width: 680px;
            line-height: 1.9;
        }

        /* Category entry grid */
        .category-entry-grid .entry-card {
            background: #fff;
            border: 1px solid var(--kaiyun-border-light);
            border-radius: var(--kaiyun-radius-md);
            padding: 20px 18px;
            transition: var(--kaiyun-transition);
            display: flex;
            align-items: center;
            gap: 14px;
            height: 100%;
            box-shadow: var(--kaiyun-shadow-sm);
        }
        .category-entry-grid .entry-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--kaiyun-shadow-md);
            border-color: var(--kaiyun-border);
            background: #fcfdfe;
        }
        .category-entry-grid .entry-icon {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--kaiyun-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--kaiyun-primary);
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .category-entry-grid .entry-content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--kaiyun-text);
            margin-bottom: 2px;
        }
        .category-entry-grid .entry-content p {
            font-size: 0.82rem;
            color: var(--kaiyun-text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* News list cards */
        .news-list-card {
            background: #fff;
            border-radius: var(--kaiyun-radius-lg);
            box-shadow: var(--kaiyun-shadow-md);
            overflow: hidden;
            transition: var(--kaiyun-transition);
            display: flex;
            flex-direction: column;
            height: 100%;
            border: 1px solid var(--kaiyun-border-light);
        }
        .news-list-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--kaiyun-shadow-lg);
            border-color: var(--kaiyun-border);
        }
        .news-list-card .news-image-wrapper {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: #dfe9f3;
        }
        .news-list-card .news-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .news-list-card:hover .news-image-wrapper img {
            transform: scale(1.05);
        }
        .news-list-card .news-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(31, 78, 121, 0.9);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 1px;
            backdrop-filter: blur(4px);
        }
        .news-list-card .news-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }
        .news-list-card .news-date {
            font-size: 0.8rem;
            color: var(--kaiyun-text-light);
            letter-spacing: 0.5px;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .news-list-card .news-date i {
            color: var(--kaiyun-accent);
            font-size: 0.9rem;
        }
        .news-list-card h3 {
            font-size: 1.08rem;
            font-weight: 650;
            color: var(--kaiyun-text);
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .news-list-card .news-excerpt {
            font-size: 0.9rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.75;
            flex-grow: 1;
            margin-bottom: 14px;
        }
        .news-list-card .news-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--kaiyun-primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: var(--kaiyun-transition);
        }
        .news-list-card .news-link:hover {
            color: var(--kaiyun-accent);
            gap: 8px;
        }

        /* Support panel - brand spotlight */
        .spotlight-panel {
            background: #fff;
            border-radius: var(--kaiyun-radius-lg);
            box-shadow: var(--kaiyun-shadow-md);
            padding: 36px 32px;
            border: 1px solid var(--kaiyun-border-light);
        }
        .spotlight-panel .spotlight-heading {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 8px;
        }
        .spotlight-panel .spotlight-lead {
            font-size: 1rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.85;
        }
        .spotlight-panel .stat-item {
            background: var(--kaiyun-bg-light);
            border-radius: var(--kaiyun-radius-md);
            padding: 20px 16px;
            text-align: center;
            transition: var(--kaiyun-transition);
        }
        .spotlight-panel .stat-item:hover {
            background: #dfe9f3;
            transform: translateY(-2px);
        }
        .spotlight-panel .stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--kaiyun-primary);
            display: block;
            line-height: 1.3;
        }
        .spotlight-panel .stat-label {
            font-size: 0.8rem;
            color: var(--kaiyun-text-muted);
            letter-spacing: 0.5px;
        }

        /* Subscribe panel */
        .subscribe-panel {
            background: var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-lg);
            padding: 44px 36px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .subscribe-panel::after {
            content: '';
            position: absolute;
            right: -60px;
            bottom: -60px;
            width: 220px;
            height: 220px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }
        .subscribe-panel .subscribe-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .subscribe-panel .subscribe-desc {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 20px;
            line-height: 1.8;
        }
        .subscribe-panel .form-control {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--kaiyun-radius-sm);
            color: #fff;
            padding: 10px 16px;
            font-size: 0.92rem;
        }
        .subscribe-panel .form-control::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .subscribe-panel .form-control:focus {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.7);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.15);
            color: #fff;
            outline: none;
        }
        .subscribe-panel .btn-light-custom {
            background: #fff;
            color: var(--kaiyun-primary);
            border: 2px solid #fff;
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 24px;
            font-weight: 600;
            font-size: 0.92rem;
            transition: var(--kaiyun-transition);
            white-space: nowrap;
        }
        .subscribe-panel .btn-light-custom:hover {
            background: var(--kaiyun-accent-light);
            border-color: var(--kaiyun-accent-light);
            color: var(--kaiyun-primary-dark);
            transform: translateY(-1px);
        }

        /* Timeline / key dates */
        .timeline-mini {
            background: #fff;
            border-radius: var(--kaiyun-radius-lg);
            box-shadow: var(--kaiyun-shadow-sm);
            border: 1px solid var(--kaiyun-border-light);
            padding: 28px 26px;
        }
        .timeline-mini .timeline-heading {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .timeline-mini .timeline-heading i {
            color: var(--kaiyun-accent);
        }
        .timeline-mini .timeline-item {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px dashed var(--kaiyun-border-light);
        }
        .timeline-mini .timeline-item:last-child {
            border-bottom: none;
        }
        .timeline-mini .timeline-date {
            flex-shrink: 0;
            width: 72px;
            font-weight: 600;
            color: var(--kaiyun-primary);
            font-size: 0.82rem;
            letter-spacing: 0.5px;
            padding-top: 2px;
        }
        .timeline-mini .timeline-content {
            font-size: 0.92rem;
            color: var(--kaiyun-text);
            line-height: 1.6;
        }
        .timeline-mini .timeline-content span {
            display: block;
            color: var(--kaiyun-text-muted);
            font-size: 0.8rem;
            margin-top: 2px;
        }

        /* Footer */
        .site-footer {
            background: #132b40;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
            margin-top: 40px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: flex;
            align-items: baseline;
            gap: 8px;
        }
        .site-footer .footer-brand span {
            font-size: 0.6rem;
            font-weight: 500;
            letter-spacing: 3px;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-desc {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 0;
        }
        .site-footer h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 8px;
        }
        .site-footer .footer-links a {
            font-size: 0.86rem;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .site-footer .footer-links a:hover {
            color: var(--kaiyun-accent-light);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            padding: 20px 0 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--kaiyun-accent-light);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .section-title {
                font-size: 1.65rem;
            }
            .category-page-header .cat-h1 {
                font-size: 1.85rem;
            }
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: var(--kaiyun-section-padding-mobile);
            }
            .site-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-desc {
                font-size: 0.92rem;
            }
            .category-page-header {
                padding: 32px 0 28px;
            }
            .category-page-header .cat-h1 {
                font-size: 1.5rem;
            }
            .category-page-header .cat-desc {
                font-size: 0.9rem;
            }
            .site-header {
                padding: 10px 0;
            }
            .navbar-brand {
                font-size: 1.25rem;
                margin-right: 0;
            }
            .btn-header-cta {
                padding: 7px 14px;
                font-size: 0.78rem;
                margin-top: 8px;
            }
            .site-header .nav-link {
                margin: 4px 0;
                font-size: 0.9rem;
                padding: 8px 0;
                border-bottom: 1px solid var(--kaiyun-border-light);
            }
            .site-header .nav-link::after {
                display: none;
            }
            .navbar-collapse {
                margin-top: 12px;
                padding-top: 8px;
                border-top: 1px solid var(--kaiyun-border-light);
            }
            .news-list-card {
                margin-bottom: 16px;
            }
            .news-list-card .news-body {
                padding: 16px 18px 18px;
            }
            .news-list-card h3 {
                font-size: 0.98rem;
            }
            .spotlight-panel {
                padding: 24px 18px;
            }
            .spotlight-panel .stat-number {
                font-size: 1.4rem;
            }
            .subscribe-panel {
                padding: 28px 20px;
            }
            .subscribe-panel .subscribe-title {
                font-size: 1.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                font-size: 0.7rem;
            }
        }
        @media (max-width: 520px) {
            .news-list-card .news-image-wrapper {
                aspect-ratio: 16/9;
            }
            .news-list-card .news-tag {
                font-size: 0.65rem;
                padding: 3px 9px;
            }
            .category-entry-grid .entry-card {
                padding: 14px 12px;
                gap: 10px;
            }
            .category-entry-grid .entry-icon {
                width: 34px;
                height: 34px;
                font-size: 1.1rem;
            }
            .category-entry-grid .entry-content h4 {
                font-size: 0.88rem;
            }
            .category-entry-grid .entry-content p {
                font-size: 0.72rem;
            }
            .timeline-mini {
                padding: 18px 14px;
            }
            .timeline-mini .timeline-date {
                width: 60px;
                font-size: 0.72rem;
            }
            .timeline-mini .timeline-content {
                font-size: 0.82rem;
            }
            .btn-kaiyun-primary,
            .btn-kaiyun-secondary {
                padding: 10px 18px;
                font-size: 0.88rem;
            }
        }

/* roulang page: category3 */
:root {
            --kaiyun-primary: #1F4E79;
            --kaiyun-primary-dark: #163b5c;
            --kaiyun-primary-light: #2e6da4;
            --kaiyun-accent: #B99B6B;
            --kaiyun-accent-light: #d5bf9d;
            --kaiyun-bg: #F4F7FB;
            --kaiyun-bg-white: #ffffff;
            --kaiyun-bg-light: #eaf0f7;
            --kaiyun-text: #1c2a36;
            --kaiyun-text-muted: #5e7083;
            --kaiyun-text-light: #8a9aa8;
            --kaiyun-border: #dfe7ef;
            --kaiyun-border-light: #e9eff5;
            --kaiyun-radius-sm: 8px;
            --kaiyun-radius-md: 12px;
            --kaiyun-radius-lg: 16px;
            --kaiyun-shadow-sm: 0 2px 10px rgba(30, 60, 100, 0.06);
            --kaiyun-shadow-md: 0 8px 24px rgba(30, 60, 100, 0.08);
            --kaiyun-shadow-lg: 0 14px 40px rgba(30, 60, 100, 0.12);
            --kaiyun-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --kaiyun-font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --kaiyun-section-padding: 88px 0;
            --kaiyun-section-padding-mobile: 56px 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--kaiyun-font);
            font-size: 16px;
            line-height: 1.85;
            color: var(--kaiyun-text);
            background-color: var(--kaiyun-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--kaiyun-primary-dark);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .site-container {
            max-width: 1140px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .site-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

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

        @media (max-width: 768px) {
            .section-padding {
                padding: var(--kaiyun-section-padding-mobile);
            }
        }

        .section-subtitle {
            font-size: 0.9rem;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--kaiyun-accent);
            font-weight: 700;
            margin-bottom: 12px;
            display: inline-block;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            line-height: 1.35;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-text-muted);
            max-width: 720px;
            line-height: 1.9;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
        }

        .btn-kaiyun-primary {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.25);
        }

        .btn-kaiyun-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(31, 78, 121, 0.2);
        }

        .btn-kaiyun-secondary {
            background-color: transparent;
            color: var(--kaiyun-primary);
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-kaiyun-secondary:hover,
        .btn-kaiyun-secondary:focus {
            background-color: var(--kaiyun-primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.15);
        }

        .btn-kaiyun-accent {
            background-color: var(--kaiyun-accent);
            color: #fff;
            border: 2px solid var(--kaiyun-accent);
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .btn-kaiyun-accent:hover,
        .btn-kaiyun-accent:focus {
            background-color: #a58552;
            border-color: #a58552;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(185, 155, 107, 0.3);
        }

        .site-header {
            background-color: #fff;
            box-shadow: 0 1px 0 rgba(30, 60, 100, 0.06);
            position: sticky;
            top: 0;
            z-index: 1030;
            padding: 0;
            border-bottom: 1px solid var(--kaiyun-border-light);
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .site-header .navbar-brand {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--kaiyun-primary);
            letter-spacing: 2px;
            line-height: 1.2;
        }

        .site-header .navbar-brand span {
            font-size: 0.65rem;
            font-weight: 500;
            letter-spacing: 3px;
            color: var(--kaiyun-accent);
            text-transform: uppercase;
        }

        .site-header .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--kaiyun-text);
            padding: 8px 14px;
            border-radius: 6px;
            transition: var(--kaiyun-transition);
        }

        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
        }

        .site-header .btn-header-cta {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .site-header .btn-header-cta:hover,
        .site-header .btn-header-cta:focus {
            background-color: var(--kaiyun-primary-dark);
            color: #fff;
            box-shadow: 0 4px 14px rgba(31, 78, 121, 0.2);
            transform: translateY(-1px);
        }

        .site-header .navbar-toggler {
            border: none;
            color: var(--kaiyun-primary);
            font-size: 1.5rem;
            padding: 4px 8px;
        }
        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.15);
        }

        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background-color: #fff;
                border-radius: var(--kaiyun-radius-md);
                padding: 16px;
                margin-top: 10px;
                box-shadow: var(--kaiyun-shadow-md);
            }
            .site-header .btn-header-cta {
                margin-top: 10px;
                justify-content: center;
                width: 100%;
            }
        }

        @media (min-width: 992px) {
            .site-header .navbar-brand {
                margin-right: 32px;
            }
        }

        .breadcrumb-kaiyun {
            --bs-breadcrumb-divider-color: var(--kaiyun-text-light);
            --bs-breadcrumb-item-active-color: var(--kaiyun-accent);
            margin: 0;
            padding: 8px 0;
            font-size: 0.85rem;
            background-color: transparent;
        }

        .breadcrumb-kaiyun .breadcrumb-item + .breadcrumb-item::before {
            content: "\203A";
            color: var(--kaiyun-text-light);
        }
        .breadcrumb-kaiyun a {
            color: var(--kaiyun-text-muted);
        }
        .breadcrumb-kaiyun a:hover {
            color: var(--kaiyun-primary);
        }

        .page-heading-band {
            background-color: var(--kaiyun-bg-white);
            border-bottom: 1px solid var(--kaiyun-border-light);
            padding: 36px 0 28px;
        }
        .page-heading-band h1 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            letter-spacing: 1px;
            margin-bottom: 10px;
        }
        .page-heading-band .h1-sub {
            font-size: 1.1rem;
            color: var(--kaiyun-text-muted);
            max-width: 780px;
        }
        @media (max-width: 768px) {
            .page-heading-band h1 {
                font-size: 1.8rem;
            }
            .page-heading-band .h1-sub {
                font-size: 0.95rem;
            }
        }

        .channel-matrix {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        @media (max-width: 992px) {
            .channel-matrix {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .channel-matrix {
                grid-template-columns: 1fr;
            }
        }
        .channel-item {
            background-color: var(--kaiyun-bg-white);
            border: 1px solid var(--kaiyun-border-light);
            border-radius: var(--kaiyun-radius-md);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: var(--kaiyun-transition);
            box-shadow: var(--kaiyun-shadow-sm);
        }
        .channel-item:hover {
            border-color: var(--kaiyun-primary);
            box-shadow: var(--kaiyun-shadow-md);
            transform: translateY(-2px);
        }
        .channel-item i {
            font-size: 1.6rem;
            color: var(--kaiyun-accent);
            flex-shrink: 0;
        }
        .channel-item .ci-title {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--kaiyun-text);
            line-height: 1.4;
        }
        .channel-item .ci-desc {
            font-size: 0.8rem;
            color: var(--kaiyun-text-muted);
            margin-top: 2px;
        }

        .topic-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 992px) {
            .topic-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .topic-card-grid {
                grid-template-columns: 1fr;
            }
        }

        .sustain-card {
            background-color: var(--kaiyun-bg-white);
            border-radius: var(--kaiyun-radius-lg);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-sm);
            border: 1px solid var(--kaiyun-border-light);
            transition: var(--kaiyun-transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .sustain-card:hover {
            box-shadow: var(--kaiyun-shadow-lg);
            transform: translateY(-3px);
            border-color: var(--kaiyun-border);
        }
        .sustain-card .sc-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--kaiyun-bg-light);
            position: relative;
        }
        .sustain-card .sc-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--kaiyun-transition);
        }
        .sustain-card:hover .sc-image img {
            transform: scale(1.04);
        }
        .sustain-card .sc-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .sustain-card .sc-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .sustain-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .sustain-card p {
            font-size: 0.92rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.75;
            flex: 1;
        }
        .sustain-card .sc-meta {
            font-size: 0.8rem;
            color: var(--kaiyun-text-light);
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--kaiyun-border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .stat-block {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border-radius: var(--kaiyun-radius-lg);
            padding: 44px 40px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            box-shadow: var(--kaiyun-shadow-lg);
        }
        @media (max-width: 768px) {
            .stat-block {
                grid-template-columns: 1fr;
                padding: 32px 24px;
                gap: 24px;
            }
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--kaiyun-accent-light);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 6px;
            letter-spacing: 0.5px;
        }
        .stat-item .stat-desc {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        .quote-panel {
            background-color: var(--kaiyun-bg-white);
            border-left: 4px solid var(--kaiyun-accent);
            border-radius: var(--kaiyun-radius-md);
            padding: 28px 32px;
            box-shadow: var(--kaiyun-shadow-sm);
        }
        .quote-panel blockquote {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--kaiyun-text);
            line-height: 1.75;
            margin: 0;
        }
        .quote-panel .quote-source {
            font-size: 0.9rem;
            color: var(--kaiyun-text-muted);
            margin-top: 14px;
            font-style: italic;
        }

        .subscribe-zone {
            background-color: var(--kaiyun-bg-white);
            border-radius: var(--kaiyun-radius-lg);
            padding: 40px 36px;
            box-shadow: var(--kaiyun-shadow-md);
            border: 1px solid var(--kaiyun-border-light);
        }
        .subscribe-zone .form-control {
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 16px;
            font-size: 0.95rem;
            color: var(--kaiyun-text);
            transition: var(--kaiyun-transition);
        }
        .subscribe-zone .form-control:focus {
            border-color: var(--kaiyun-primary);
            box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.12);
        }

        .site-footer {
            background-color: #1c2a36;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 992px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 576px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .site-footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 2px;
            line-height: 1.2;
            margin-bottom: 12px;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }
        .site-footer .footer-brand span {
            font-size: 0.65rem;
            font-weight: 500;
            letter-spacing: 3px;
            color: var(--kaiyun-accent-light);
            text-transform: uppercase;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 8px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            transition: var(--kaiyun-transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--kaiyun-accent-light);
        }
        .site-footer .footer-bottom {
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px 24px;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
            align-items: center;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: underline;
        }
        .site-footer .footer-bottom a:hover {
            color: var(--kaiyun-accent-light);
        }

        .bg-light-section {
            background-color: var(--kaiyun-bg-light);
            border-radius: var(--kaiyun-radius-lg);
        }

        @media (max-width: 768px) {
            .btn-kaiyun-primary,
            .btn-kaiyun-secondary {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category4 */
:root {
            --kaiyun-primary: #1F4E79;
            --kaiyun-primary-dark: #163b5c;
            --kaiyun-primary-light: #2e6da4;
            --kaiyun-accent: #B99B6B;
            --kaiyun-accent-light: #d5bf9d;
            --kaiyun-bg: #F4F7FB;
            --kaiyun-bg-white: #ffffff;
            --kaiyun-bg-light: #eaf0f7;
            --kaiyun-text: #1c2a36;
            --kaiyun-text-muted: #5e7083;
            --kaiyun-text-light: #8a9aa8;
            --kaiyun-border: #dfe7ef;
            --kaiyun-border-light: #e9eff5;
            --kaiyun-radius-sm: 8px;
            --kaiyun-radius-md: 12px;
            --kaiyun-radius-lg: 16px;
            --kaiyun-shadow-sm: 0 2px 10px rgba(30, 60, 100, 0.06);
            --kaiyun-shadow-md: 0 8px 24px rgba(30, 60, 100, 0.08);
            --kaiyun-shadow-lg: 0 14px 40px rgba(30, 60, 100, 0.12);
            --kaiyun-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --kaiyun-font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --kaiyun-section-padding: 88px 0;
            --kaiyun-section-padding-mobile: 56px 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--kaiyun-font);
            font-size: 16px;
            line-height: 1.85;
            color: var(--kaiyun-text);
            background-color: var(--kaiyun-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--kaiyun-primary-dark);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .site-container {
            max-width: 1140px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .site-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

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

        @media (max-width: 768px) {
            .section-padding {
                padding: var(--kaiyun-section-padding-mobile);
            }
        }

        .section-subtitle {
            font-size: 0.9rem;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--kaiyun-accent);
            font-weight: 700;
            margin-bottom: 12px;
            display: inline-block;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            line-height: 1.35;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-text-muted);
            max-width: 720px;
            line-height: 1.9;
        }

        @media (max-width: 768px) {
            .section-desc {
                font-size: 0.95rem;
            }
        }

        .btn-kaiyun-primary {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.25);
        }

        .btn-kaiyun-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(31, 78, 121, 0.2);
        }

        .btn-kaiyun-secondary {
            background-color: transparent;
            color: var(--kaiyun-primary);
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-kaiyun-secondary:hover,
        .btn-kaiyun-secondary:focus {
            background-color: var(--kaiyun-primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.15);
        }

        .btn-kaiyun-accent {
            background-color: var(--kaiyun-accent);
            color: #fff;
            border: 2px solid var(--kaiyun-accent);
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .btn-kaiyun-accent:hover,
        .btn-kaiyun-accent:focus {
            background-color: #a58552;
            border-color: #a58552;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(185, 155, 107, 0.3);
        }

        /* Header Navigation */
        .site-header {
            background-color: #fff;
            box-shadow: 0 1px 0 var(--kaiyun-border-light);
            position: sticky;
            top: 0;
            z-index: 1030;
            padding: 0;
        }

        .site-header .navbar {
            padding: 14px 0;
            background-color: #fff;
            min-height: 72px;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--kaiyun-primary);
            letter-spacing: 0.5px;
            line-height: 1.2;
        }

        .site-header .navbar-brand span {
            font-size: 0.65rem;
            font-weight: 500;
            letter-spacing: 1.8px;
            color: var(--kaiyun-accent);
            text-transform: uppercase;
            display: block;
            margin-top: -2px;
        }

        .site-header .navbar-brand:hover {
            color: var(--kaiyun-primary-dark);
        }

        .site-header .navbar-nav .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--kaiyun-text);
            padding: 8px 16px !important;
            margin: 0 2px;
            border-radius: var(--kaiyun-radius-sm);
            transition: var(--kaiyun-transition);
        }

        .site-header .navbar-nav .nav-link:hover {
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
        }

        .site-header .navbar-nav .nav-link.active {
            color: var(--kaiyun-primary);
            font-weight: 600;
            background-color: var(--kaiyun-bg-light);
        }

        .btn-header-cta {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 22px;
            font-size: 0.92rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 7px;
            white-space: nowrap;
        }

        .btn-header-cta:hover,
        .btn-header-cta:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 5px 16px rgba(31, 78, 121, 0.22);
        }

        .site-header .navbar-toggler {
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-sm);
            padding: 6px 10px;
            font-size: 1.4rem;
            color: var(--kaiyun-primary);
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.12);
        }

        /* Breadcrumb */
        .breadcrumb-kaiyun {
            background-color: transparent;
            padding: 28px 0 0;
            margin: 0;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb-kaiyun .breadcrumb-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--kaiyun-text-muted);
        }

        .breadcrumb-kaiyun .breadcrumb-item a {
            color: var(--kaiyun-text-muted);
            transition: var(--kaiyun-transition);
        }

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

        .breadcrumb-kaiyun .breadcrumb-item.active {
            color: var(--kaiyun-primary);
            font-weight: 600;
        }

        .breadcrumb-kaiyun .breadcrumb-item+.breadcrumb-item::before {
            content: "\F285";
            font-family: "bootstrap-icons";
            font-size: 0.75rem;
            color: var(--kaiyun-text-light);
            padding: 0;
            margin-right: 8px;
        }

        .breadcrumb-kaiyun .breadcrumb-item a::after {
            display: none;
        }

        /* Page Header */
        .page-header {
            padding: 36px 0 28px;
            background-color: var(--kaiyun-bg);
        }

        .page-header h1 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            letter-spacing: 0.5px;
            line-height: 1.3;
            margin: 8px 0 12px;
        }

        @media (max-width: 768px) {
            .page-header h1 {
                font-size: 1.7rem;
            }
        }

        .page-header .page-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-text-muted);
            max-width: 680px;
            line-height: 1.9;
        }

        /* Category Entrance */
        .category-entrance {
            background-color: var(--kaiyun-bg-white);
            border-radius: var(--kaiyun-radius-lg);
            box-shadow: var(--kaiyun-shadow-md);
            padding: 32px 28px;
            margin-top: 8px;
        }

        .category-entrance .entrance-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 14px;
        }

        .category-entrance .entrance-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 18px;
            background-color: var(--kaiyun-bg-light);
            border-radius: var(--kaiyun-radius-md);
            border: 1px solid var(--kaiyun-border-light);
            color: var(--kaiyun-text);
            font-weight: 500;
            transition: var(--kaiyun-transition);
        }

        .category-entrance .entrance-item:hover {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border-color: var(--kaiyun-primary);
            transform: translateY(-2px);
            box-shadow: var(--kaiyun-shadow-md);
        }

        .category-entrance .entrance-item i {
            font-size: 1.3rem;
            color: var(--kaiyun-accent);
            flex-shrink: 0;
        }

        .category-entrance .entrance-item:hover i {
            color: #fff;
        }

        /* Card List */
        .card-list-section {
            padding: 48px 0 56px;
        }

        .card-list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 24px;
        }

        @media (max-width: 992px) {
            .card-list-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .card-list-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        .kaiyun-card {
            background-color: var(--kaiyun-bg-white);
            border-radius: var(--kaiyun-radius-lg);
            box-shadow: var(--kaiyun-shadow-sm);
            overflow: hidden;
            border: 1px solid var(--kaiyun-border-light);
            transition: var(--kaiyun-transition);
            display: flex;
            flex-direction: column;
        }

        .kaiyun-card:hover {
            box-shadow: var(--kaiyun-shadow-lg);
            transform: translateY(-3px);
            border-color: var(--kaiyun-border);
        }

        .kaiyun-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

        .kaiyun-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--kaiyun-transition);
        }

        .kaiyun-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .kaiyun-card .card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .kaiyun-card .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.8px;
            color: var(--kaiyun-accent);
            background-color: rgba(185, 155, 107, 0.1);
            padding: 4px 10px;
            border-radius: 20px;
            margin-bottom: 10px;
            width: fit-content;
        }

        .kaiyun-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .kaiyun-card .card-desc {
            font-size: 0.92rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }

        .kaiyun-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--kaiyun-text-light);
            padding-top: 12px;
            border-top: 1px solid var(--kaiyun-border-light);
        }

        .kaiyun-card .card-meta i {
            font-size: 0.85rem;
        }

        .card-list-footer {
            text-align: center;
            margin-top: 32px;
        }

        /* Data Block */
        .data-block {
            background-color: var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-lg);
            padding: 48px 40px;
            color: #fff;
            box-shadow: var(--kaiyun-shadow-lg);
        }

        @media (max-width: 768px) {
            .data-block {
                padding: 32px 20px;
                border-radius: var(--kaiyun-radius-md);
            }
        }

        .data-block .data-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 24px;
            letter-spacing: 0.5px;
            color: #fff;
        }

        .data-block .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        @media (max-width: 992px) {
            .data-block .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 576px) {
            .data-block .data-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        .data-block .data-item {
            background-color: rgba(255, 255, 255, 0.08);
            border-radius: var(--kaiyun-radius-md);
            padding: 20px 18px;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        .data-block .data-value {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .data-block .data-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 0.5px;
        }

        /* Resource Links */
        .resource-block {
            background-color: var(--kaiyun-bg-white);
            border-radius: var(--kaiyun-radius-lg);
            box-shadow: var(--kaiyun-shadow-sm);
            padding: 40px 36px;
            border: 1px solid var(--kaiyun-border-light);
        }

        @media (max-width: 768px) {
            .resource-block {
                padding: 24px 18px;
                border-radius: var(--kaiyun-radius-md);
            }
        }

        .resource-block .resource-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .resource-block .resource-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--kaiyun-border-light);
            font-size: 0.98rem;
            color: var(--kaiyun-text);
        }

        .resource-block .resource-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .resource-block .resource-list li:first-child {
            padding-top: 0;
        }

        .resource-block .resource-list li i {
            color: var(--kaiyun-accent);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .resource-block .resource-list li a {
            color: var(--kaiyun-text);
            transition: var(--kaiyun-transition);
            font-weight: 500;
        }

        .resource-block .resource-list li a:hover {
            color: var(--kaiyun-primary);
        }

        /* Subscribe Form */
        .subscribe-block {
            background-color: var(--kaiyun-bg-light);
            border-radius: var(--kaiyun-radius-lg);
            padding: 40px 36px;
            border: 1px solid var(--kaiyun-border-light);
        }

        @media (max-width: 768px) {
            .subscribe-block {
                padding: 24px 18px;
                border-radius: var(--kaiyun-radius-md);
            }
        }

        .subscribe-block .form-control {
            border: 1.5px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 16px;
            font-size: 0.95rem;
            transition: var(--kaiyun-transition);
            background-color: #fff;
        }

        .subscribe-block .form-control:focus {
            border-color: var(--kaiyun-primary);
            box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.1);
        }

        .subscribe-block .form-label {
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--kaiyun-text);
        }

        /* Footer */
        .site-footer {
            background-color: #1a2c3d;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
            margin-top: 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
        }

        @media (max-width: 992px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 576px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            display: flex;
            align-items: baseline;
            gap: 10px;
        }

        .site-footer .footer-brand span {
            font-size: 0.6rem;
            font-weight: 500;
            letter-spacing: 1.8px;
            color: var(--kaiyun-accent-light);
            text-transform: uppercase;
        }

        .site-footer .footer-desc {
            font-size: 0.9rem;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
        }

        .site-footer h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 8px;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: var(--kaiyun-transition);
        }

        .site-footer .footer-links a:hover {
            color: var(--kaiyun-accent-light);
        }

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: var(--kaiyun-transition);
        }

        .site-footer .footer-bottom a:hover {
            color: var(--kaiyun-accent-light);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 36px 0 0;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        /* Utility */
        .text-accent {
            color: var(--kaiyun-accent);
        }

        .bg-kaiyun-white {
            background-color: var(--kaiyun-bg-white);
        }

        .bg-kaiyun-light {
            background-color: var(--kaiyun-bg-light);
        }

        .rounded-kaiyun {
            border-radius: var(--kaiyun-radius-lg);
        }

        .fw-600 {
            font-weight: 600;
        }

        /* Focus visibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--kaiyun-primary);
            outline-offset: 2px;
        }

/* roulang page: category5 */
:root {
            --kaiyun-primary: #1F4E79;
            --kaiyun-primary-dark: #163b5c;
            --kaiyun-primary-light: #2e6da4;
            --kaiyun-accent: #B99B6B;
            --kaiyun-accent-light: #d5bf9d;
            --kaiyun-bg: #F4F7FB;
            --kaiyun-bg-white: #ffffff;
            --kaiyun-bg-light: #eaf0f7;
            --kaiyun-text: #1c2a36;
            --kaiyun-text-muted: #5e7083;
            --kaiyun-text-light: #8a9aa8;
            --kaiyun-border: #dfe7ef;
            --kaiyun-border-light: #e9eff5;
            --kaiyun-radius-sm: 8px;
            --kaiyun-radius-md: 12px;
            --kaiyun-radius-lg: 16px;
            --kaiyun-shadow-sm: 0 2px 10px rgba(30, 60, 100, 0.06);
            --kaiyun-shadow-md: 0 8px 24px rgba(30, 60, 100, 0.08);
            --kaiyun-shadow-lg: 0 14px 40px rgba(30, 60, 100, 0.12);
            --kaiyun-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --kaiyun-font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --kaiyun-section-padding: 88px 0;
            --kaiyun-section-padding-mobile: 56px 0;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--kaiyun-font);
            font-size: 16px;
            line-height: 1.85;
            color: var(--kaiyun-text);
            background-color: var(--kaiyun-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }

        a {
            text-decoration: none;
            color: var(--kaiyun-primary);
            transition: var(--kaiyun-transition);
        }
        a:hover {
            color: var(--kaiyun-primary-dark);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .site-container {
            max-width: 1140px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

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

        .section-subtitle {
            font-size: 0.85rem;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--kaiyun-accent);
            font-weight: 700;
            margin-bottom: 10px;
            display: inline-block;
        }

        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 14px;
            letter-spacing: 0.4px;
            line-height: 1.35;
        }

        .section-desc {
            font-size: 1.02rem;
            color: var(--kaiyun-text-muted);
            max-width: 760px;
            line-height: 1.9;
        }

        .btn-kaiyun-primary {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 11px 26px;
            font-size: 0.98rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.25);
        }
        .btn-kaiyun-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(31, 78, 121, 0.2);
        }

        .btn-kaiyun-secondary {
            background-color: transparent;
            color: var(--kaiyun-primary);
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 11px 26px;
            font-size: 0.98rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-kaiyun-secondary:hover,
        .btn-kaiyun-secondary:focus {
            background-color: var(--kaiyun-primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.15);
        }

        .btn-kaiyun-accent {
            background-color: var(--kaiyun-accent);
            color: #fff;
            border: 2px solid var(--kaiyun-accent);
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 22px;
            font-size: 0.92rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-kaiyun-accent:hover,
        .btn-kaiyun-accent:focus {
            background-color: #a58552;
            border-color: #a58552;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(185, 155, 107, 0.3);
        }

        /* Header Navigation */
        .site-header {
            background-color: #ffffff;
            border-bottom: 1px solid var(--kaiyun-border-light);
            padding: 10px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(30, 60, 100, 0.05);
        }
        .site-header .navbar {
            padding: 0;
            background-color: transparent;
        }
        .site-header .navbar-brand {
            display: flex;
            flex-direction: column;
            line-height: 1.15;
            font-weight: 700;
            font-size: 1.55rem;
            color: var(--kaiyun-primary);
            letter-spacing: 1px;
        }
        .site-header .navbar-brand span {
            font-size: 0.62rem;
            font-weight: 500;
            letter-spacing: 3px;
            color: var(--kaiyun-text-muted);
            text-transform: uppercase;
        }
        .site-header .navbar-brand:hover {
            color: var(--kaiyun-primary-dark);
        }
        .site-header .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--kaiyun-text);
            padding: 8px 14px !important;
            border-radius: var(--kaiyun-radius-sm);
            transition: var(--kaiyun-transition);
            letter-spacing: 0.3px;
        }
        .site-header .nav-link:hover {
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
        }
        .site-header .nav-link.active {
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
            font-weight: 600;
            position: relative;
        }
        .site-header .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background-color: var(--kaiyun-primary);
            border-radius: 1px;
        }
        .btn-header-cta {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 9px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .btn-header-cta:hover,
        .btn-header-cta:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(31, 78, 121, 0.25);
        }
        .navbar-toggler {
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-sm);
            padding: 6px 10px;
            color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.15);
            outline: none;
        }
        .navbar-toggler .bi-list {
            font-size: 1.4rem;
            color: var(--kaiyun-primary);
        }

        /* Breadcrumb */
        .kaiyun-breadcrumb {
            margin-bottom: 0;
            padding: 0;
            background-color: transparent;
        }
        .kaiyun-breadcrumb .breadcrumb-item {
            font-size: 0.88rem;
            color: var(--kaiyun-text-muted);
            letter-spacing: 0.3px;
        }
        .kaiyun-breadcrumb .breadcrumb-item a {
            color: var(--kaiyun-text-muted);
            transition: var(--kaiyun-transition);
        }
        .kaiyun-breadcrumb .breadcrumb-item a:hover {
            color: var(--kaiyun-primary);
        }
        .kaiyun-breadcrumb .breadcrumb-item.active {
            color: var(--kaiyun-text);
            font-weight: 500;
        }
        .kaiyun-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
            content: "/";
            color: var(--kaiyun-text-light);
            margin: 0 8px;
        }

        /* Page Header */
        .page-header-section {
            background-color: #ffffff;
            border-bottom: 1px solid var(--kaiyun-border-light);
            padding: 36px 0 40px;
        }
        .page-header-section .page-title {
            font-size: 2.1rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }
        .page-header-section .page-summary {
            font-size: 1.05rem;
            color: var(--kaiyun-text-muted);
            max-width: 780px;
            line-height: 1.85;
            margin-bottom: 0;
        }

        /* Category Hub Section */
        .category-hub-section {
            background-color: var(--kaiyun-bg);
            padding: 48px 0;
        }
        .category-hub-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .category-hub-card {
            background-color: #ffffff;
            border: 1px solid var(--kaiyun-border-light);
            border-radius: var(--kaiyun-radius-md);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: var(--kaiyun-transition);
            box-shadow: var(--kaiyun-shadow-sm);
        }
        .category-hub-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--kaiyun-shadow-md);
            border-color: var(--kaiyun-border);
        }
        .category-hub-card .hub-icon {
            width: 42px;
            height: 42px;
            min-width: 42px;
            background-color: var(--kaiyun-bg-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--kaiyun-primary);
            font-size: 1.15rem;
        }
        .category-hub-card .hub-text {
            flex: 1;
        }
        .category-hub-card .hub-text .hub-name {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--kaiyun-text);
            margin-bottom: 2px;
        }
        .category-hub-card .hub-text .hub-desc {
            font-size: 0.82rem;
            color: var(--kaiyun-text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }
        .category-hub-card.current {
            border-color: var(--kaiyun-primary);
            background-color: var(--kaiyun-bg-light);
            pointer-events: none;
        }
        .category-hub-card.current .hub-name {
            color: var(--kaiyun-primary);
        }

        /* News List Section */
        .news-list-section {
            background-color: #ffffff;
            padding: 56px 0;
        }
        .news-list-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 28px;
        }
        .news-list-header .left h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 6px;
        }
        .news-list-header .left p {
            color: var(--kaiyun-text-muted);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .news-card {
            background-color: #ffffff;
            border: 1px solid var(--kaiyun-border-light);
            border-radius: var(--kaiyun-radius-md);
            overflow: hidden;
            transition: var(--kaiyun-transition);
            box-shadow: var(--kaiyun-shadow-sm);
            margin-bottom: 20px;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--kaiyun-shadow-md);
            border-color: var(--kaiyun-border);
        }
        .news-card .news-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background-color: var(--kaiyun-bg-light);
        }
        .news-card .news-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .news-card:hover .news-img-wrap img {
            transform: scale(1.03);
        }
        .news-card .news-img-wrap .news-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: rgba(31, 78, 121, 0.9);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .news-card .news-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-date {
            font-size: 0.8rem;
            color: var(--kaiyun-text-light);
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        .news-card .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .news-card .news-title a {
            color: var(--kaiyun-text);
            transition: var(--kaiyun-transition);
        }
        .news-card .news-title a:hover {
            color: var(--kaiyun-primary);
        }
        .news-card .news-summary {
            font-size: 0.9rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.75;
            margin-bottom: 12px;
            flex: 1;
        }
        .news-card .news-link {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--kaiyun-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--kaiyun-transition);
        }
        .news-card .news-link:hover {
            color: var(--kaiyun-primary-dark);
            gap: 7px;
        }

        /* Media Resource Section */
        .media-resource-section {
            background-color: var(--kaiyun-bg);
            padding: 56px 0;
        }
        .media-resource-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 28px;
        }
        .resource-card {
            background-color: #ffffff;
            border: 1px solid var(--kaiyun-border-light);
            border-radius: var(--kaiyun-radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            transition: var(--kaiyun-transition);
            box-shadow: var(--kaiyun-shadow-sm);
        }
        .resource-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--kaiyun-shadow-md);
            border-color: var(--kaiyun-border);
        }
        .resource-card .resource-icon {
            width: 48px;
            height: 48px;
            min-width: 48px;
            background-color: var(--kaiyun-bg-light);
            border-radius: var(--kaiyun-radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--kaiyun-primary);
            font-size: 1.4rem;
            margin-bottom: 14px;
        }
        .resource-card .resource-name {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .resource-card .resource-desc {
            font-size: 0.9rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }
        .resource-card .resource-meta {
            font-size: 0.8rem;
            color: var(--kaiyun-text-light);
            letter-spacing: 0.3px;
        }
        .resource-card .btn-download {
            align-self: flex-start;
            background-color: transparent;
            color: var(--kaiyun-primary);
            border: 1.5px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-sm);
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--kaiyun-transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .resource-card .btn-download:hover {
            background-color: var(--kaiyun-bg-light);
            border-color: var(--kaiyun-primary);
            color: var(--kaiyun-primary-dark);
        }

        /* Media Data Section */
        .media-data-section {
            background-color: var(--kaiyun-primary);
            color: #fff;
            padding: 48px 0;
        }
        .media-data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .media-data-item .data-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 4px;
        }
        .media-data-item .data-label {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 0.5px;
        }
        .media-data-divider {
            width: 1px;
            background-color: rgba(255, 255, 255, 0.2);
            height: 48px;
            align-self: center;
        }

        /* Subscribe Section */
        .subscribe-section {
            background-color: #ffffff;
            padding: 56px 0;
            border-top: 1px solid var(--kaiyun-border-light);
        }
        .subscribe-panel {
            background-color: var(--kaiyun-bg);
            border-radius: var(--kaiyun-radius-lg);
            padding: 36px 40px;
            box-shadow: var(--kaiyun-shadow-sm);
        }
        .subscribe-panel h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 8px;
        }
        .subscribe-panel p {
            color: var(--kaiyun-text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .subscribe-form .form-control {
            border: 1.5px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-sm);
            padding: 11px 16px;
            font-size: 0.95rem;
            background-color: #fff;
            color: var(--kaiyun-text);
            transition: var(--kaiyun-transition);
        }
        .subscribe-form .form-control:focus {
            border-color: var(--kaiyun-primary);
            box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.12);
            outline: none;
        }
        .subscribe-form .btn-subscribe {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 11px 26px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--kaiyun-transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .subscribe-form .btn-subscribe:hover {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(31, 78, 121, 0.2);
        }
        .subscribe-form .form-check-label {
            font-size: 0.82rem;
            color: var(--kaiyun-text-muted);
        }

        /* Media Contact Section */
        .media-contact-section {
            background-color: var(--kaiyun-bg);
            padding: 56px 0;
        }
        .media-contact-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 28px;
        }
        .contact-card {
            background-color: #ffffff;
            border: 1px solid var(--kaiyun-border-light);
            border-radius: var(--kaiyun-radius-md);
            padding: 24px;
            text-align: center;
            transition: var(--kaiyun-transition);
            box-shadow: var(--kaiyun-shadow-sm);
        }
        .contact-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--kaiyun-shadow-md);
        }
        .contact-card .contact-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 14px;
            background-color: var(--kaiyun-bg-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--kaiyun-primary);
            font-size: 1.3rem;
        }
        .contact-card h4 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 6px;
        }
        .contact-card p {
            font-size: 0.88rem;
            color: var(--kaiyun-text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }
        .contact-card a {
            color: var(--kaiyun-primary);
            font-weight: 500;
        }
        .contact-card a:hover {
            color: var(--kaiyun-primary-dark);
        }

        /* Footer */
        .site-footer {
            background-color: #1c2a36;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 28px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 12px;
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .footer-brand span {
            font-size: 0.6rem;
            font-weight: 500;
            letter-spacing: 3px;
            color: rgba(255, 255, 255, 0.5);
            text-transform: uppercase;
        }
        .footer-desc {
            font-size: 0.85rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
        }
        .site-footer h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            transition: var(--kaiyun-transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 3px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--kaiyun-transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-bottom span {
            white-space: nowrap;
        }

        /* Responsive */
        @media (max-width: 991px) {
            .site-header .navbar-collapse {
                background-color: #ffffff;
                border-radius: var(--kaiyun-radius-md);
                padding: 16px;
                margin-top: 10px;
                box-shadow: var(--kaiyun-shadow-md);
                border: 1px solid var(--kaiyun-border-light);
            }
            .btn-header-cta {
                margin-top: 10px;
                width: 100%;
                justify-content: center;
            }
            .category-hub-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .media-data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .media-data-divider {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --kaiyun-section-padding: 56px 0;
            }
            .site-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
            .page-header-section .page-title {
                font-size: 1.6rem;
            }
            .category-hub-grid {
                grid-template-columns: 1fr;
            }
            .media-resource-grid {
                grid-template-columns: 1fr;
            }
            .news-card .news-body {
                padding: 16px 18px 18px;
            }
            .media-data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .media-data-item .data-number {
                font-size: 1.7rem;
            }
            .subscribe-panel {
                padding: 24px 20px;
            }
            .media-contact-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .news-list-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .btn-kaiyun-primary,
            .btn-kaiyun-secondary {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .site-header .navbar-brand {
                font-size: 1.3rem;
            }
            .site-header .navbar-brand span {
                font-size: 0.55rem;
                letter-spacing: 2px;
            }
            .page-header-section {
                padding: 24px 0 28px;
            }
            .page-header-section .page-title {
                font-size: 1.4rem;
            }
            .section-padding {
                padding: 48px 0;
            }
            .news-list-section,
            .media-resource-section,
            .media-contact-section,
            .subscribe-section {
                padding: 40px 0;
            }
            .subscribe-panel {
                padding: 20px 16px;
            }
            .subscribe-form .d-flex {
                flex-direction: column;
                gap: 10px;
            }
            .subscribe-form .btn-subscribe {
                width: 100%;
                justify-content: center;
            }
            .media-data-item .data-number {
                font-size: 1.5rem;
            }
            .media-data-item .data-label {
                font-size: 0.75rem;
            }
        }

/* roulang page: category6 */
:root {
            --kaiyun-primary: #1F4E79;
            --kaiyun-primary-dark: #163b5c;
            --kaiyun-primary-light: #2e6da4;
            --kaiyun-accent: #B99B6B;
            --kaiyun-accent-light: #d5bf9d;
            --kaiyun-bg: #F4F7FB;
            --kaiyun-bg-white: #ffffff;
            --kaiyun-bg-light: #eaf0f7;
            --kaiyun-text: #1c2a36;
            --kaiyun-text-muted: #5e7083;
            --kaiyun-text-light: #8a9aa8;
            --kaiyun-border: #dfe7ef;
            --kaiyun-border-light: #e9eff5;
            --kaiyun-radius-sm: 8px;
            --kaiyun-radius-md: 12px;
            --kaiyun-radius-lg: 16px;
            --kaiyun-shadow-sm: 0 2px 10px rgba(30, 60, 100, 0.06);
            --kaiyun-shadow-md: 0 8px 24px rgba(30, 60, 100, 0.08);
            --kaiyun-shadow-lg: 0 14px 40px rgba(30, 60, 100, 0.12);
            --kaiyun-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --kaiyun-font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --kaiyun-section-padding: 88px 0;
            --kaiyun-section-padding-mobile: 56px 0;
        }

        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--kaiyun-font);
            font-size: 16px;
            line-height: 1.85;
            color: var(--kaiyun-text);
            background-color: var(--kaiyun-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: var(--kaiyun-primary);
            transition: var(--kaiyun-transition);
        }
        a:hover {
            color: var(--kaiyun-primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .site-container {
            max-width: 1140px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-padding {
            padding: var(--kaiyun-section-padding);
        }
        .section-subtitle {
            font-size: 0.9rem;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--kaiyun-accent);
            font-weight: 700;
            margin-bottom: 12px;
            display: inline-block;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            line-height: 1.35;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-text-muted);
            max-width: 720px;
            line-height: 1.9;
        }
        .btn-kaiyun-primary {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .btn-kaiyun-primary:hover,
        .btn-kaiyun-primary:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.25);
        }
        .btn-kaiyun-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(31, 78, 121, 0.2);
        }
        .btn-kaiyun-secondary {
            background-color: transparent;
            color: var(--kaiyun-primary);
            border: 2px solid var(--kaiyun-primary);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .btn-kaiyun-secondary:hover,
        .btn-kaiyun-secondary:focus {
            background-color: var(--kaiyun-primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 78, 121, 0.15);
        }
        .btn-kaiyun-accent {
            background-color: var(--kaiyun-accent);
            color: #fff;
            border: 2px solid var(--kaiyun-accent);
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--kaiyun-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .btn-kaiyun-accent:hover,
        .btn-kaiyun-accent:focus {
            background-color: #a58552;
            border-color: #a58552;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(185, 155, 107, 0.3);
        }
        .site-header {
            background-color: #fff;
            border-bottom: 1px solid var(--kaiyun-border-light);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 12px rgba(30, 60, 100, 0.05);
        }
        .site-header .navbar {
            padding: 0;
        }
        .site-header .navbar-brand {
            display: flex;
            align-items: baseline;
            gap: 10px;
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--kaiyun-primary);
            letter-spacing: 1px;
        }
        .site-header .navbar-brand span {
            font-size: 0.75rem;
            font-weight: 500;
            color: var(--kaiyun-text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
        }
        .site-header .nav-link {
            color: var(--kaiyun-text) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 14px !important;
            border-radius: 6px;
            transition: var(--kaiyun-transition);
        }
        .site-header .nav-link:hover {
            color: var(--kaiyun-primary) !important;
            background-color: var(--kaiyun-bg-light);
        }
        .site-header .nav-link.active {
            color: var(--kaiyun-primary) !important;
            background-color: var(--kaiyun-bg-light);
            font-weight: 700;
        }
        .btn-header-cta {
            background-color: var(--kaiyun-primary);
            color: #fff;
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 22px;
            font-size: 0.93rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 2px solid var(--kaiyun-primary);
            transition: var(--kaiyun-transition);
            white-space: nowrap;
        }
        .btn-header-cta:hover,
        .btn-header-cta:focus {
            background-color: var(--kaiyun-primary-dark);
            border-color: var(--kaiyun-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(31, 78, 121, 0.2);
        }
        .navbar-toggler {
            border: 1px solid var(--kaiyun-border);
            border-radius: 6px;
            padding: 6px 10px;
            color: var(--kaiyun-primary);
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--kaiyun-primary-light);
        }
        .breadcrumb-kaiyun {
            background: transparent;
            padding: 0;
            margin-bottom: 0;
            font-size: 0.9rem;
            color: var(--kaiyun-text-muted);
        }
        .breadcrumb-kaiyun a {
            color: var(--kaiyun-primary);
            font-weight: 500;
        }
        .breadcrumb-kaiyun .breadcrumb-item.active {
            color: var(--kaiyun-text-muted);
        }
        .breadcrumb-kaiyun .breadcrumb-item+.breadcrumb-item::before {
            content: "›";
            color: var(--kaiyun-text-light);
        }
        .page-head-section {
            background: linear-gradient(135deg, #f4f7fb 0%, #eaf0f7 55%, #dfe7ef 100%);
            padding: 56px 0 40px;
            border-bottom: 1px solid var(--kaiyun-border-light);
        }
        .page-head-section h1 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .page-head-section .page-desc {
            font-size: 1.05rem;
            color: var(--kaiyun-text-muted);
            max-width: 780px;
            line-height: 1.9;
        }
        .category-gate-section {
            padding: 48px 0;
            background-color: var(--kaiyun-bg-white);
        }
        .category-gate-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .gate-card {
            background: var(--kaiyun-bg);
            border-radius: var(--kaiyun-radius-md);
            padding: 28px 22px;
            border: 1px solid var(--kaiyun-border-light);
            transition: var(--kaiyun-transition);
            display: block;
            color: var(--kaiyun-text);
        }
        .gate-card:hover {
            background: var(--kaiyun-bg-white);
            border-color: var(--kaiyun-primary-light);
            box-shadow: var(--kaiyun-shadow-md);
            color: var(--kaiyun-text);
            transform: translateY(-2px);
        }
        .gate-card .gate-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--kaiyun-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
        .gate-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--kaiyun-text);
        }
        .gate-card p {
            font-size: 0.9rem;
            color: var(--kaiyun-text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }
        .main-list-section {
            padding: 64px 0;
            background-color: var(--kaiyun-bg);
        }
        .list-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border-radius: var(--kaiyun-radius-md);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-sm);
            border: 1px solid var(--kaiyun-border-light);
            transition: var(--kaiyun-transition);
            height: 100%;
        }
        .list-card:hover {
            box-shadow: var(--kaiyun-shadow-lg);
            transform: translateY(-4px);
        }
        .list-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .list-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .list-card:hover .card-img img {
            transform: scale(1.04);
        }
        .list-card .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--kaiyun-accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 1px;
        }
        .list-card .card-body {
            padding: 22px 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .list-card .card-date {
            font-size: 0.82rem;
            color: var(--kaiyun-text-light);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }
        .list-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--kaiyun-text);
            line-height: 1.45;
        }
        .list-card p {
            font-size: 0.93rem;
            color: var(--kaiyun-text-muted);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }
        .list-card .card-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--kaiyun-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .list-card .card-link:hover {
            color: var(--kaiyun-primary-dark);
        }
        .scene-section {
            padding: 72px 0;
            background-color: #fff;
        }
        .scene-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .scene-image {
            border-radius: var(--kaiyun-radius-lg);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-lg);
            min-height: 380px;
            position: relative;
        }
        .scene-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .scene-content .section-title {
            font-size: 1.8rem;
        }
        .scene-content p {
            color: var(--kaiyun-text-muted);
            font-size: 1rem;
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .quote-data-section {
            padding: 64px 0;
            background-color: var(--kaiyun-primary);
            color: #fff;
        }
        .quote-data-section .quote-text {
            font-size: 1.4rem;
            font-weight: 500;
            line-height: 2;
            color: #fff;
            max-width: 820px;
            margin-bottom: 24px;
            letter-spacing: 0.3px;
        }
        .quote-data-section .quote-author {
            font-size: 1rem;
            color: var(--kaiyun-accent-light);
            font-weight: 500;
        }
        .data-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
            margin-top: 32px;
            padding-top: 28px;
            border-top: 1px solid rgba(255,255,255,0.2);
        }
        .data-item {
            flex: 1;
            min-width: 150px;
        }
        .data-item .data-num {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--kaiyun-accent-light);
        }
        .data-item .data-label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.8);
        }
        .subscribe-section {
            padding: 64px 0;
            background-color: var(--kaiyun-bg);
        }
        .subscribe-panel {
            background: #fff;
            border-radius: var(--kaiyun-radius-lg);
            padding: 44px 40px;
            box-shadow: var(--kaiyun-shadow-md);
            border: 1px solid var(--kaiyun-border-light);
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
        }
        .subscribe-panel .sub-info {
            flex: 1;
            min-width: 260px;
        }
        .subscribe-panel .sub-info h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--kaiyun-text);
            margin-bottom: 8px;
        }
        .subscribe-panel .sub-info p {
            color: var(--kaiyun-text-muted);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex: 1;
            min-width: 280px;
            align-items: center;
        }
        .subscribe-form .form-control {
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-sm);
            padding: 12px 18px;
            font-size: 0.95rem;
            color: var(--kaiyun-text);
            transition: var(--kaiyun-transition);
            background: var(--kaiyun-bg);
            flex: 1;
        }
        .subscribe-form .form-control:focus {
            border-color: var(--kaiyun-primary-light);
            box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.1);
            background: #fff;
            outline: none;
        }
        .site-footer {
            background-color: #16283a;
            color: #c5d0dc;
            padding: 60px 0 32px;
            font-size: 0.95rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: baseline;
            gap: 10px;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand span {
            font-size: 0.7rem;
            font-weight: 400;
            color: #9db0c4;
            letter-spacing: 2px;
        }
        .site-footer .footer-desc {
            color: #9db0c4;
            line-height: 1.8;
            font-size: 0.9rem;
            max-width: 340px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            color: #9db0c4;
            font-size: 0.9rem;
            transition: var(--kaiyun-transition);
        }
        .site-footer .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.12);
            font-size: 0.85rem;
            color: #8fa0b3;
        }
        .site-footer .footer-bottom a {
            color: #b9c7d6;
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: #fff;
                border-radius: var(--kaiyun-radius-md);
                padding: 16px;
                box-shadow: var(--kaiyun-shadow-md);
                margin-top: 12px;
            }
            .site-header .btn-header-cta {
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }
            .category-gate-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scene-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .scene-image {
                min-height: 280px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .page-head-section h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 767.98px) {
            .site-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-padding {
                padding: var(--kaiyun-section-padding-mobile);
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
            .page-head-section {
                padding: 36px 0 28px;
            }
            .page-head-section h1 {
                font-size: 1.8rem;
            }
            .page-head-section .page-desc {
                font-size: 0.95rem;
            }
            .category-gate-section {
                padding: 36px 0;
            }
            .category-gate-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .gate-card {
                padding: 20px 18px;
            }
            .main-list-section {
                padding: 44px 0;
            }
            .list-card .card-img {
                height: 180px;
            }
            .scene-section {
                padding: 48px 0;
            }
            .scene-content .section-title {
                font-size: 1.4rem;
            }
            .quote-data-section {
                padding: 44px 0;
            }
            .quote-data-section .quote-text {
                font-size: 1.15rem;
            }
            .data-strip {
                gap: 20px;
            }
            .data-item .data-num {
                font-size: 1.6rem;
            }
            .subscribe-section {
                padding: 44px 0;
            }
            .subscribe-panel {
                padding: 28px 22px;
                gap: 20px;
            }
            .subscribe-form {
                flex-direction: column;
                min-width: 100%;
            }
            .subscribe-form .form-control {
                width: 100%;
            }
            .site-footer {
                padding: 40px 0 24px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .site-header .navbar-brand {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 520px) {
            .site-header .navbar-brand span {
                display: none;
            }
            .site-header .navbar-brand {
                font-size: 1.3rem;
            }
            .btn-header-cta {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .page-head-section h1 {
                font-size: 1.5rem;
            }
            .list-card .card-img {
                height: 160px;
            }
            .quote-data-section .quote-text {
                font-size: 1.05rem;
                line-height: 1.8;
            }
            .data-strip {
                flex-direction: column;
                gap: 16px;
            }
        }

/* 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}