/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --clr-primary: #1a365d;
            --clr-primary-light: #2b6cb0;
            --clr-primary-lighter: #ebf4ff;
            --clr-accent: #d69e2e;
            --clr-accent-light: #fefcbf;
            --clr-accent-hover: #b7791f;
            --clr-bg: #f8fafc;
            --clr-bg-alt: #ffffff;
            --clr-bg-dark: #0f1724;
            --clr-text: #1e293b;
            --clr-text-light: #64748b;
            --clr-text-white: #f1f5f9;
            --clr-border: #e2e8f0;
            --clr-border-light: #f1f5f9;
            --clr-success: #38a169;
            --clr-warning: #d69e2e;
            --clr-danger: #e53e3e;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.14);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--clr-text);
            background: var(--clr-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--clr-primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--clr-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            font-weight: 700;
            line-height: 1.25;
            color: var(--clr-text);
        }
        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        figure {
            margin: 0;
        }

        /* ========== 容器 ========== */
        .container-custom {
            width: 100%;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px) saturate(180%);
            -webkit-backdrop-filter: blur(14px) saturate(180%);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--clr-primary);
            letter-spacing: -0.02em;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--clr-primary-light);
        }
        .nav-logo .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            font-weight: 800;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links .nav-item {
            margin: 0;
        }
        .nav-links .nav-link {
            display: block;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--clr-text-light);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            text-decoration: none;
            position: relative;
        }
        .nav-links .nav-link:hover {
            color: var(--clr-primary);
            background: var(--clr-primary-lighter);
        }
        .nav-links .nav-link.active {
            color: var(--clr-primary);
            background: var(--clr-primary-lighter);
            font-weight: 600;
        }
        .nav-links .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--clr-accent);
            border-radius: 3px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--clr-bg);
            border: 1px solid var(--clr-border);
            border-radius: 100px;
            padding: 0.4rem 0.8rem 0.4rem 1rem;
            gap: 0.5rem;
            transition: all var(--transition);
            min-width: 180px;
        }
        .nav-search:focus-within {
            border-color: var(--clr-primary-light);
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.12);
            background: #fff;
        }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.85rem;
            color: var(--clr-text);
            width: 100%;
            padding: 0;
        }
        .nav-search input::placeholder {
            color: var(--clr-text-light);
            opacity: 0.7;
        }
        .nav-search .search-icon {
            color: var(--clr-text-light);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .nav-search .search-kbd {
            font-size: 0.65rem;
            color: var(--clr-text-light);
            background: var(--clr-border-light);
            border-radius: 4px;
            padding: 0.1rem 0.4rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            flex-shrink: 0;
            opacity: 0.6;
        }
        .btn-nav-cta {
            background: var(--clr-primary);
            color: #fff;
            border: none;
            border-radius: 100px;
            padding: 0.5rem 1.25rem;
            font-size: 0.85rem;
            font-weight: 600;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-nav-cta:hover {
            background: var(--clr-primary-light);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--clr-primary);
            padding: 0.25rem 0.5rem;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .navbar-toggler-custom:hover {
            background: var(--clr-primary-lighter);
        }
        @media (max-width: 992px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 1rem 1.5rem 1.5rem;
                gap: 0.25rem;
                border-bottom: 1px solid var(--clr-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                z-index: 1040;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links .nav-link {
                padding: 0.7rem 1rem;
                font-size: 1rem;
                width: 100%;
                text-align: left;
            }
            .nav-links .nav-link.active::after {
                display: none;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .nav-search {
                min-width: unset;
                width: 140px;
            }
            .nav-search .search-kbd {
                display: none;
            }
        }
        @media (max-width: 576px) {
            .nav-search {
                width: 100px;
                padding: 0.3rem 0.6rem 0.3rem 0.8rem;
            }
            .nav-search input {
                font-size: 0.8rem;
            }
            .btn-nav-cta {
                padding: 0.4rem 0.9rem;
                font-size: 0.78rem;
            }
            .nav-logo {
                font-size: 1.15rem;
            }
            .nav-logo .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
            }
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            padding: 5rem 0 4rem;
            background: linear-gradient(160deg, #f0f4ff 0%, #f8fafc 40%, #ffffff 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(43, 108, 176, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(214, 158, 46, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .hero-content {
            max-width: 580px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: var(--clr-accent-light);
            color: var(--clr-accent-hover);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.3rem 1rem 0.3rem 0.8rem;
            border-radius: 100px;
            margin-bottom: 1.25rem;
            border: 1px solid rgba(214, 158, 46, 0.2);
        }
        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            background: var(--clr-accent);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.2);
            }
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.15;
            color: var(--clr-primary);
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 1.1rem;
            color: var(--clr-text-light);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 90%;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--clr-primary);
            color: #fff;
            border: none;
            border-radius: 100px;
            padding: 0.75rem 2rem;
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition);
            text-decoration: none;
            box-shadow: 0 4px 14px rgba(26, 54, 93, 0.25);
        }
        .btn-primary-custom:hover {
            background: var(--clr-primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 54, 93, 0.30);
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--clr-primary);
            border: 2px solid var(--clr-border);
            border-radius: 100px;
            padding: 0.75rem 2rem;
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition);
            text-decoration: none;
        }
        .btn-outline-custom:hover {
            border-color: var(--clr-primary-light);
            color: var(--clr-primary-light);
            background: var(--clr-primary-lighter);
            transform: translateY(-2px);
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-card-visual {
            width: 100%;
            max-width: 480px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 2rem 2rem 2.5rem;
            border: 1px solid rgba(226, 232, 240, 0.6);
            position: relative;
            overflow: hidden;
        }
        .hero-card-visual::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
        }
        .hero-card-visual .v-label {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--clr-text-light);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 1rem;
        }
        .hero-card-visual .v-stats {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        .hero-card-visual .v-stat {
            text-align: center;
            padding: 0.75rem 0.5rem;
            background: var(--clr-bg);
            border-radius: var(--radius-md);
        }
        .hero-card-visual .v-stat .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--clr-primary);
            line-height: 1.2;
        }
        .hero-card-visual .v-stat .label {
            font-size: 0.75rem;
            color: var(--clr-text-light);
            font-weight: 500;
        }
        .hero-card-visual .v-list {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .hero-card-visual .v-list-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.85rem;
            color: var(--clr-text);
            padding: 0.4rem 0;
            border-bottom: 1px solid var(--clr-border-light);
        }
        .hero-card-visual .v-list-item:last-child {
            border-bottom: none;
        }
        .hero-card-visual .v-list-item .fa-circle-check {
            color: var(--clr-success);
            font-size: 0.8rem;
        }
        @media (max-width: 992px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero-content {
                max-width: 100%;
                text-align: center;
            }
            .hero-sub {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-card-visual {
                max-width: 420px;
            }
        }
        @media (max-width: 576px) {
            .hero {
                padding: 3rem 0 2.5rem;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-sub {
                font-size: 0.95rem;
            }
            .hero-card-visual {
                padding: 1.25rem;
            }
            .hero-card-visual .v-stats {
                grid-template-columns: 1fr 1fr;
                gap: 0.6rem;
            }
            .hero-card-visual .v-stat .num {
                font-size: 1.4rem;
            }
        }

        /* ========== 通用板块 ========== */
        .section {
            padding: 4.5rem 0;
        }
        .section-alt {
            background: var(--clr-bg-alt);
        }
        .section-dark {
            background: var(--clr-bg-dark);
            color: var(--clr-text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-title {
            color: #fff;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--clr-primary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--clr-text-light);
            max-width: 640px;
            margin-bottom: 2.5rem;
        }
        .section-title-center {
            text-align: center;
        }
        .section-subtitle-center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        @media (max-width: 768px) {
            .section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
                margin-bottom: 1.8rem;
            }
        }

        /* ========== 核心说明板块 ========== */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .about-text .lead {
            font-size: 1.15rem;
            font-weight: 500;
            color: var(--clr-primary);
            margin-bottom: 1rem;
        }
        .about-text p {
            color: var(--clr-text-light);
            line-height: 1.8;
        }
        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .about-feature-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--clr-text);
            padding: 0.6rem 1rem;
            background: var(--clr-bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--clr-border-light);
            transition: all var(--transition);
        }
        .about-feature-item:hover {
            border-color: var(--clr-primary-lighter);
            background: var(--clr-primary-lighter);
            transform: translateX(4px);
        }
        .about-feature-item .fa-icon {
            color: var(--clr-accent);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .about-visual {
            display: flex;
            justify-content: center;
        }
        .about-image-card {
            width: 100%;
            max-width: 460px;
            background: linear-gradient(145deg, #ffffff, #f8fafc);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 2rem;
            border: 1px solid var(--clr-border);
            position: relative;
        }
        .about-image-card .img-placeholder {
            width: 100%;
            aspect-ratio: 16 / 10;
            background: linear-gradient(135deg, var(--clr-primary-lighter), #e2e8f0);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-primary-light);
            font-size: 2.5rem;
            font-weight: 600;
            opacity: 0.8;
        }
        @media (max-width: 992px) {
            .about-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .about-features {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 576px) {
            .about-features {
                grid-template-columns: 1fr;
            }
            .about-image-card {
                padding: 1.25rem;
            }
            .about-text .lead {
                font-size: 1rem;
            }
        }

        /* ========== 分类入口 ========== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .category-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem 1.75rem;
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--clr-primary-light), var(--clr-accent));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card .cat-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            background: var(--clr-primary-lighter);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.6rem;
            color: var(--clr-primary-light);
            transition: all var(--transition);
        }
        .category-card:hover .cat-icon {
            background: var(--clr-primary);
            color: #fff;
            transform: scale(1.05);
        }
        .category-card .cat-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--clr-primary);
            margin-bottom: 0.5rem;
        }
        .category-card .cat-desc {
            font-size: 0.88rem;
            color: var(--clr-text-light);
            line-height: 1.6;
            margin-bottom: 1.25rem;
        }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--clr-primary-light);
            transition: gap var(--transition);
        }
        .category-card .cat-link:hover {
            gap: 0.7rem;
            color: var(--clr-primary);
        }
        @media (max-width: 992px) {
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .categories-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .category-card {
                padding: 1.5rem 1.25rem;
            }
        }

        /* ========== 最新资讯 ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .news-card .card-top {
            padding: 1.25rem 1.25rem 0.75rem;
            flex: 1;
        }
        .news-card .news-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--clr-accent-hover);
            background: var(--clr-accent-light);
            padding: 0.2rem 0.7rem;
            border-radius: 100px;
            margin-bottom: 0.6rem;
            border: 1px solid rgba(214, 158, 46, 0.15);
        }
        .news-card .news-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 0.4rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-title a {
            color: inherit;
            text-decoration: none;
        }
        .news-card .news-title a:hover {
            color: var(--clr-primary-light);
        }
        .news-card .news-excerpt {
            font-size: 0.85rem;
            color: var(--clr-text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0.5rem;
        }
        .news-card .card-footer {
            padding: 0.75rem 1.25rem 1rem;
            border-top: 1px solid var(--clr-border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: var(--clr-text-light);
        }
        .news-card .card-footer .news-date {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .news-card .card-footer .news-date i {
            font-size: 0.7rem;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 3rem 1rem;
            color: var(--clr-text-light);
            font-size: 1rem;
            background: var(--clr-bg-alt);
            border-radius: var(--radius-md);
            border: 1px dashed var(--clr-border);
        }
        @media (max-width: 992px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .news-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
        }

        /* ========== 数据 / 流程 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-md);
            padding: 1.75rem 1rem;
            text-align: center;
            backdrop-filter: blur(4px);
            transition: all var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }
        .stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 0.25rem;
        }
        .stat-card .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
        }
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ========== 流程步骤 ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 2.5rem;
            left: 15%;
            right: 15%;
            height: 2px;
            background: linear-gradient(90deg, var(--clr-primary-light), var(--clr-accent), var(--clr-primary-light));
            opacity: 0.3;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .step-item .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--clr-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 14px rgba(26, 54, 93, 0.2);
        }
        .step-item .step-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--clr-primary);
            margin-bottom: 0.4rem;
        }
        .step-item .step-desc {
            font-size: 0.88rem;
            color: var(--clr-text-light);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .steps-grid::before {
                display: none;
            }
            .step-item {
                display: flex;
                align-items: flex-start;
                gap: 1rem;
                text-align: left;
            }
            .step-item .step-number {
                flex-shrink: 0;
                margin: 0;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--clr-primary-lighter);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 1.1rem 1.25rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            font-weight: 600;
            color: var(--clr-text);
            cursor: pointer;
            text-align: left;
            transition: all var(--transition);
            gap: 1rem;
        }
        .faq-question:hover {
            color: var(--clr-primary-light);
        }
        .faq-question .faq-toggle {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--clr-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--clr-text-light);
            transition: all var(--transition);
        }
        .faq-item.open .faq-question .faq-toggle {
            background: var(--clr-primary);
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 1.25rem;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 1.25rem 1.1rem;
        }
        .faq-answer p {
            font-size: 0.92rem;
            color: var(--clr-text-light);
            line-height: 1.7;
            margin: 0;
        }
        @media (max-width: 576px) {
            .faq-question {
                font-size: 0.92rem;
                padding: 0.9rem 1rem;
            }
            .faq-answer p {
                font-size: 0.85rem;
            }
        }

        /* ========== CTA ========== */
        .cta-box {
            background: linear-gradient(135deg, var(--clr-primary), #0f2744);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            text-align: center;
            box-shadow: var(--shadow-xl);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(214, 158, 46, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
            position: relative;
            z-index: 2;
        }
        .cta-box p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 1.5rem;
            position: relative;
            z-index: 2;
        }
        .cta-box .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
            position: relative;
            z-index: 2;
        }
        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--clr-accent);
            color: var(--clr-primary);
            border: none;
            border-radius: 100px;
            padding: 0.8rem 2rem;
            font-size: 0.95rem;
            font-weight: 700;
            transition: all var(--transition);
            text-decoration: none;
        }
        .btn-cta-primary:hover {
            background: var(--clr-accent-hover);
            color: var(--clr-primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(214, 158, 46, 0.35);
        }
        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 100px;
            padding: 0.8rem 2rem;
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition);
            text-decoration: none;
        }
        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-box {
                padding: 2.5rem 1.5rem;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .cta-box p {
                font-size: 0.92rem;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--clr-bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-brand .footer-logo .logo-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-accent));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: #fff;
            font-weight: 800;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            max-width: 320px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            transition: all var(--transition);
            text-decoration: none;
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.25rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 1.25rem;
            flex-wrap: wrap;
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== 实用工具 ========== */
        .text-center {
            text-align: center;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .mb-3 {
            margin-bottom: 1.5rem;
        }
        .mb-4 {
            margin-bottom: 2rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mt-3 {
            margin-top: 1.5rem;
        }
        .gap-1 {
            gap: 0.5rem;
        }
        .gap-2 {
            gap: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .d-none {
            display: none;
        }
        .d-block {
            display: block;
        }
        @media (max-width: 576px) {
            .d-sm-none {
                display: none;
            }
            .d-sm-block {
                display: block;
            }
        }

        /* ========== 辅助 ========== */
        .divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--clr-primary-light), var(--clr-accent));
            border-radius: 4px;
            margin: 0.5rem 0 1rem;
        }
        .divider-center {
            margin-left: auto;
            margin-right: auto;
        }
        .tag-sm {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.15rem 0.6rem;
            border-radius: 100px;
            background: var(--clr-primary-lighter);
            color: var(--clr-primary-light);
        }
        .text-muted {
            color: var(--clr-text-light);
        }

/* roulang page: article */
:root {
            --primary: #4F46E5;
            --primary-dark: #3730A3;
            --primary-light: #818CF8;
            --primary-bg: #EEF2FF;
            --secondary: #0EA5E9;
            --accent: #F59E0B;
            --success: #10B981;
            --dark: #0F172A;
            --gray-900: #1E293B;
            --gray-700: #334155;
            --gray-500: #64748B;
            --gray-300: #CBD5E1;
            --gray-100: #F1F5F9;
            --white: #FFFFFF;
            --bg-light: #FAFBFF;
            --bg-card: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10), 0 4px 16px rgba(0,0,0,0.05);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body { font-family: var(--font-sans); color: var(--gray-900); background: var(--white); line-height: 1.7; -webkit-font-smoothing: antialiased; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 1.25rem; }
        .container-custom { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container-custom { padding: 0 16px; } }

        /* Header & Navigation */
        .site-header { position: sticky; top: 0; z-index: 1050; background: rgba(255,255,255,0.92); backdrop-filter: blur(18px) saturate(180%); -webkit-backdrop-filter: blur(18px) saturate(180%); border-bottom: 1px solid rgba(79,70,229,0.08); box-shadow: 0 1px 4px rgba(0,0,0,0.02); transition: var(--transition); }
        .site-header .container-custom { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
        .nav-logo { display: flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 700; color: var(--dark); letter-spacing: -0.3px; transition: var(--transition); flex-shrink: 0; }
        .nav-logo:hover { color: var(--primary); opacity: 0.92; }
        .logo-icon { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; border-radius: 10px; font-size: 0.85rem; font-weight: 800; letter-spacing: 0; box-shadow: 0 4px 12px rgba(79,70,229,0.25); }
        .nav-links { display: flex; align-items: center; gap: 4px; list-style: none; padding: 0; margin: 0; }
        .nav-item { margin: 0; }
        .nav-link { display: block; padding: 8px 18px; border-radius: var(--radius-sm); font-size: 0.95rem; font-weight: 500; color: var(--gray-700); transition: var(--transition); position: relative; }
        .nav-link:hover { color: var(--primary); background: var(--primary-bg); }
        .nav-link.active { color: var(--primary); background: var(--primary-bg); font-weight: 600; }
        .nav-link.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--primary); border-radius: 4px; }
        .nav-right { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
        .nav-search { position: relative; display: flex; align-items: center; background: var(--gray-100); border-radius: 100px; padding: 0 12px 0 36px; height: 42px; min-width: 200px; border: 1px solid transparent; transition: var(--transition); }
        .nav-search:focus-within { background: var(--white); border-color: var(--primary-light); box-shadow: 0 0 0 4px rgba(79,70,229,0.10); }
        .nav-search .search-icon { position: absolute; left: 12px; color: var(--gray-500); font-size: 0.9rem; pointer-events: none; }
        .nav-search input { border: none; background: transparent; outline: none; font-size: 0.9rem; color: var(--gray-900); width: 100%; padding: 0; }
        .nav-search input::placeholder { color: var(--gray-500); }
        .nav-search .search-kbd { margin-left: 8px; padding: 2px 8px; background: rgba(0,0,0,0.06); border-radius: 4px; font-size: 0.7rem; color: var(--gray-500); font-weight: 500; white-space: nowrap; flex-shrink: 0; }
        .btn-nav-cta { display: inline-flex; align-items: center; gap: 6px; padding: 10px 24px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; border-radius: 100px; font-size: 0.9rem; font-weight: 600; border: none; transition: var(--transition); box-shadow: 0 4px 14px rgba(79,70,229,0.30); white-space: nowrap; }
        .btn-nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(79,70,229,0.35); color: #fff; }
        .navbar-toggler-custom { display: none; background: none; border: none; font-size: 1.5rem; color: var(--gray-700); padding: 4px 8px; cursor: pointer; transition: var(--transition); }
        .navbar-toggler-custom:hover { color: var(--primary); }
        @media (max-width: 992px) {
            .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(18px); flex-direction: column; padding: 16px 24px 24px; border-bottom: 1px solid rgba(79,70,229,0.08); box-shadow: var(--shadow-lg); border-radius: 0 0 var(--radius-md) var(--radius-md); }
            .nav-links.open { display: flex; }
            .nav-link { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .nav-link.active::after { display: none; }
            .navbar-toggler-custom { display: block; }
            .nav-search { min-width: 140px; }
            .nav-search .search-kbd { display: none; }
        }
        @media (max-width: 576px) {
            .site-header .container-custom { height: 64px; gap: 12px; }
            .nav-logo { font-size: 1.15rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 0.75rem; }
            .btn-nav-cta { padding: 8px 16px; font-size: 0.8rem; }
            .nav-search { min-width: 100px; padding-left: 32px; height: 38px; }
            .nav-search .search-icon { left: 10px; font-size: 0.8rem; }
            .nav-search input { font-size: 0.8rem; }
        }

        /* Article Page */
        .article-hero { padding: 48px 0 32px; background: var(--bg-light); border-bottom: 1px solid var(--gray-100); }
        .article-hero .container-custom { max-width: 820px; }
        .article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-bottom: 20px; }
        .article-category { display: inline-flex; align-items: center; padding: 4px 14px; background: var(--primary-bg); color: var(--primary); border-radius: 100px; font-size: 0.8rem; font-weight: 600; }
        .article-date { font-size: 0.85rem; color: var(--gray-500); display: flex; align-items: center; gap: 6px; }
        .article-date i { font-size: 0.75rem; }
        .article-hero h1 { font-size: 2.4rem; font-weight: 800; line-height: 1.25; letter-spacing: -0.5px; color: var(--dark); margin-bottom: 16px; }
        .article-hero .article-desc { font-size: 1.1rem; color: var(--gray-500); line-height: 1.6; max-width: 720px; }
        @media (max-width: 768px) {
            .article-hero { padding: 32px 0 24px; }
            .article-hero h1 { font-size: 1.7rem; }
            .article-hero .article-desc { font-size: 0.95rem; }
        }
        @media (max-width: 576px) {
            .article-hero h1 { font-size: 1.4rem; }
            .article-meta { gap: 8px 14px; }
        }

        .article-body { padding: 48px 0 64px; }
        .article-body .container-custom { max-width: 820px; }
        .article-content { font-size: 1.05rem; line-height: 1.85; color: var(--gray-900); }
        .article-content h2 { font-size: 1.7rem; font-weight: 700; margin-top: 40px; margin-bottom: 16px; color: var(--dark); letter-spacing: -0.3px; }
        .article-content h3 { font-size: 1.35rem; font-weight: 600; margin-top: 32px; margin-bottom: 12px; color: var(--dark); }
        .article-content h4 { font-size: 1.15rem; font-weight: 600; margin-top: 24px; margin-bottom: 8px; color: var(--gray-700); }
        .article-content p { margin-bottom: 20px; }
        .article-content ul, .article-content ol { margin-bottom: 20px; padding-left: 1.5rem; }
        .article-content li { margin-bottom: 8px; }
        .article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-content a:hover { color: var(--primary-dark); }
        .article-content img { border-radius: var(--radius-md); margin: 28px 0; box-shadow: var(--shadow-md); }
        .article-content blockquote { border-left: 4px solid var(--primary-light); background: var(--primary-bg); padding: 16px 24px; margin: 24px 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-style: italic; color: var(--gray-700); }
        .article-content code { background: var(--gray-100); padding: 2px 8px; border-radius: 4px; font-size: 0.9em; color: var(--primary-dark); }
        .article-content pre { background: var(--dark); color: #e2e8f0; padding: 20px 24px; border-radius: var(--radius-md); overflow-x: auto; margin: 24px 0; font-size: 0.9rem; line-height: 1.6; }
        .article-content pre code { background: none; padding: 0; color: inherit; font-size: inherit; }
        .article-content table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 0.95rem; }
        .article-content th, .article-content td { padding: 12px 16px; border: 1px solid var(--gray-300); text-align: left; }
        .article-content th { background: var(--gray-100); font-weight: 600; color: var(--dark); }
        .article-content hr { border: none; height: 1px; background: var(--gray-300); margin: 40px 0; }
        .article-content .wp-block-button { display: inline-flex; }
        .article-content .wp-block-button a { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; border-radius: 100px; font-weight: 600; text-decoration: none; box-shadow: 0 4px 14px rgba(79,70,229,0.25); transition: var(--transition); }
        .article-content .wp-block-button a:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(79,70,229,0.30); color: #fff; }
        @media (max-width: 768px) {
            .article-content { font-size: 1rem; }
            .article-content h2 { font-size: 1.4rem; }
            .article-content h3 { font-size: 1.2rem; }
            .article-content table { font-size: 0.85rem; }
            .article-content th, .article-content td { padding: 8px 12px; }
        }
        @media (max-width: 576px) {
            .article-body { padding: 32px 0 48px; }
            .article-content h2 { font-size: 1.25rem; }
            .article-content h3 { font-size: 1.1rem; }
        }

        .article-footer-nav { padding: 32px 0 48px; border-top: 1px solid var(--gray-100); margin-top: 40px; }
        .article-footer-nav .container-custom { max-width: 820px; display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
        .article-footer-nav a { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; background: var(--gray-100); border-radius: 100px; font-size: 0.9rem; font-weight: 500; color: var(--gray-700); transition: var(--transition); }
        .article-footer-nav a:hover { background: var(--primary-bg); color: var(--primary); }
        .article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; }
        .article-tags .tag { display: inline-flex; padding: 4px 14px; background: var(--gray-100); border-radius: 100px; font-size: 0.8rem; color: var(--gray-500); transition: var(--transition); }
        .article-tags .tag:hover { background: var(--primary-bg); color: var(--primary); }

        /* Not Found */
        .not-found { text-align: center; padding: 80px 24px; }
        .not-found .not-found-icon { font-size: 4rem; color: var(--gray-300); margin-bottom: 24px; }
        .not-found h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; color: var(--dark); }
        .not-found p { font-size: 1.05rem; color: var(--gray-500); margin-bottom: 24px; }
        .not-found .btn-back { display: inline-flex; align-items: center; gap: 8px; padding: 12px 32px; background: var(--primary); color: #fff; border-radius: 100px; font-weight: 600; transition: var(--transition); }
        .not-found .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); color: #fff; }

        /* Footer */
        .site-footer { background: var(--dark); color: rgba(255,255,255,0.80); padding: 64px 0 32px; }
        .site-footer a { color: rgba(255,255,255,0.70); transition: var(--transition); }
        .site-footer a:hover { color: #fff; text-decoration: none; }
        .footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .footer-logo { display: flex; align-items: center; gap: 10px; font-size: 1.3rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.60); max-width: 360px; }
        .footer-col h4 { font-size: 1rem; font-weight: 600; color: #fff; margin-bottom: 20px; letter-spacing: 0.3px; }
        .footer-col ul { list-style: none; padding: 0; margin: 0; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.65); display: inline-flex; align-items: center; gap: 4px; transition: var(--transition); }
        .footer-col ul li a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; font-size: 0.85rem; color: rgba(255,255,255,0.50); }
        .footer-bottom a { color: rgba(255,255,255,0.60); }
        .footer-bottom a:hover { color: #fff; }
        .footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
        .footer-links a { font-size: 0.85rem; }
        @media (max-width: 992px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 576px) {
            .site-footer { padding: 48px 0 24px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-links { justify-content: center; }
        }

        /* Extra Utilities */
        .text-primary { color: var(--primary) !important; }
        .bg-primary-soft { background: var(--primary-bg); }
        .mb-0 { margin-bottom: 0; }
        .mt-2 { margin-top: 8px; }
        .mt-4 { margin-top: 24px; }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 16px; }
        .d-flex { display: flex; }
        .align-center { align-items: center; }
        .flex-wrap { flex-wrap: wrap; }

        /* Breadcrumb */
        .breadcrumb-nav { padding: 16px 0; background: var(--bg-light); border-bottom: 1px solid var(--gray-100); }
        .breadcrumb-nav .container-custom { max-width: 820px; }
        .breadcrumb-nav a { font-size: 0.85rem; color: var(--gray-500); }
        .breadcrumb-nav a:hover { color: var(--primary); }
        .breadcrumb-nav span { font-size: 0.85rem; color: var(--gray-700); }
        .breadcrumb-nav .sep { margin: 0 8px; color: var(--gray-300); }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-bg: #eff6ff;
            --secondary: #0f172a;
            --secondary-light: #1e293b;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --success: #10b981;
            --success-bg: #ecfdf5;
            --body-bg: #ffffff;
            --body-color: #1e293b;
            --text-light: #64748b;
            --text-muted: #94a3b8;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --card-bg: #ffffff;
            --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            color: var(--body-color);
            background: var(--body-bg);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--secondary);
            margin-top: 0;
        }
        h1 {
            font-size: 2.75rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.375rem;
        }
        h4 {
            font-size: 1.125rem;
        }
        p {
            margin-top: 0;
            color: var(--text-light);
        }
        .section-title {
            text-align: center;
            margin-bottom: 0.5rem;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto 2.5rem auto;
            font-size: 1.05rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.15rem;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-color);
            transition: box-shadow var(--transition);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--secondary);
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--secondary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1rem;
            letter-spacing: 0;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-item .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
            text-decoration: none;
        }
        .nav-item .nav-link:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .nav-item .nav-link.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--border-light);
            border: 1px solid var(--border-color);
            border-radius: 40px;
            padding: 0 14px;
            height: 38px;
            width: 200px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }
        .nav-search .search-icon {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-right: 8px;
        }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            flex: 1;
            font-size: 0.85rem;
            color: var(--body-color);
            min-width: 0;
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .search-kbd {
            font-size: 0.7rem;
            color: var(--text-muted);
            background: var(--border-color);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 500;
            letter-spacing: 0.3px;
            margin-left: 4px;
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            text-decoration: none;
        }
        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 1.2rem;
            color: var(--secondary);
            cursor: pointer;
            transition: background var(--transition);
        }
        .navbar-toggler-custom:hover {
            background: var(--border-light);
        }
        @media (max-width: 992px) {
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(14px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.3s ease, opacity 0.3s ease;
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-item .nav-link {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .navbar-toggler-custom {
                display: inline-flex;
            }
            .nav-search {
                width: 140px;
            }
            .search-kbd {
                display: none;
            }
        }
        @media (max-width: 576px) {
            .nav-search {
                width: 100px;
            }
            .btn-nav-cta {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-area {
            padding: 20px 0 0;
            background: var(--body-bg);
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-light);
            flex-wrap: wrap;
        }
        .breadcrumb-custom a {
            color: var(--text-light);
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom .sep {
            color: var(--text-muted);
        }
        .breadcrumb-custom .current {
            color: var(--secondary);
            font-weight: 500;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            padding: 48px 0 40px;
            background: var(--body-bg);
        }
        .page-hero h1 {
            margin-bottom: 12px;
        }
        .page-hero .lead {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 680px;
        }
        .page-hero .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .page-hero .hero-stat {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-light);
        }
        .page-hero .hero-stat i {
            color: var(--primary);
            font-size: 1.2rem;
        }
        .page-hero .hero-stat strong {
            color: var(--secondary);
            font-weight: 700;
        }

        /* ===== Section Spacing ===== */
        section {
            padding: 60px 0;
        }
        @media (max-width: 768px) {
            section {
                padding: 40px 0;
            }
        }

        /* ===== Guide Cards ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 24px 24px;
            transition: box-shadow var(--transition-slow), transform var(--transition-slow);
            box-shadow: var(--card-shadow);
        }
        .guide-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }
        .guide-card .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        .guide-card h3 {
            margin-bottom: 8px;
            font-size: 1.15rem;
        }
        .guide-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .guide-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 16px;
        }
        .guide-card .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--border-light);
            color: var(--text-light);
        }
        .guide-card .tag.primary {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .guide-card .tag.success {
            background: var(--success-bg);
            color: var(--success);
        }
        .guide-card .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .guide-card .card-link i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }
        .guide-card .card-link:hover i {
            transform: translateX(4px);
        }
        @media (max-width: 992px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .guide-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 文章列表 ===== */
        .article-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .article-item {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .article-item:last-child {
            border-bottom: none;
        }
        .article-item .article-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--primary-bg);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .article-item .article-content {
            flex: 1;
        }
        .article-item .article-title {
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 4px;
            color: var(--secondary);
        }
        .article-item .article-title a {
            color: var(--secondary);
        }
        .article-item .article-title a:hover {
            color: var(--primary);
        }
        .article-item .article-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .article-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Featured Guide (深色区块) ===== */
        .featured-guide {
            background: var(--secondary);
            border-radius: var(--radius-xl);
            padding: 40px 48px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 40px;
            margin-top: 20px;
        }
        .featured-guide .fg-content {
            flex: 1;
        }
        .featured-guide .fg-content h3 {
            color: #fff;
            margin-bottom: 12px;
            font-size: 1.5rem;
        }
        .featured-guide .fg-content p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }
        .featured-guide .fg-content .btn-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--secondary);
            padding: 10px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: background var(--transition), transform var(--transition);
            text-decoration: none;
        }
        .featured-guide .fg-content .btn-light-custom:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
        }
        .featured-guide .fg-icon {
            flex-shrink: 0;
            width: 120px;
            height: 120px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.8rem;
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .featured-guide {
                flex-direction: column;
                padding: 32px 24px;
                text-align: center;
            }
            .featured-guide .fg-icon {
                width: 80px;
                height: 80px;
                font-size: 2rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--card-shadow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--secondary);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--border-light);
        }
        .faq-question i {
            color: var(--text-muted);
            transition: transform var(--transition);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-bg);
            border-radius: var(--radius-xl);
            padding: 52px 40px;
            text-align: center;
        }
        .cta-section h2 {
            margin-bottom: 12px;
        }
        .cta-section p {
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1rem;
        }
        .cta-section .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            text-decoration: none;
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid var(--primary);
            cursor: pointer;
            transition: background var(--transition), color var(--transition), transform var(--transition);
            text-decoration: none;
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 32px;
            margin-top: 60px;
        }
        .site-footer .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom .footer-links {
                justify-content: center;
                flex-wrap: wrap;
                gap: 12px;
            }
        }

        /* ===== Responsive helpers ===== */
        @media (max-width: 768px) {
            .page-hero .hero-stats {
                gap: 16px;
            }
            .page-hero .hero-stat {
                font-size: 0.85rem;
            }
        }

        /* ===== 分类页特有装饰 ===== */
        .category-badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--primary-bg);
            color: var(--primary);
            margin-bottom: 12px;
        }

        /* 选项卡风格 */
        .guide-tabs {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .guide-tab {
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--border-light);
            color: var(--text-light);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }
        .guide-tab:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary);
        }
        .guide-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* 空状态占位隐藏 Bootstrap 默认 */
        .btn-check:focus+.btn,
        .btn:focus {
            box-shadow: none;
        }
        .form-control:focus {
            box-shadow: none;
            border-color: var(--primary);
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-bg: #eff6ff;
            --secondary: #0ea5e9;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --dark: #0f172a;
            --dark-2: #1e293b;
            --gray-900: #111827;
            --gray-800: #1f2937;
            --gray-700: #374151;
            --gray-600: #4b5563;
            --gray-500: #6b7280;
            --gray-400: #9ca3af;
            --gray-300: #d1d5db;
            --gray-200: #e5e7eb;
            --gray-100: #f3f4f6;
            --gray-50: #f9fafb;
            --white: #ffffff;
            --body-bg: #f8fafc;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-color: #e2e8f0;
            --radius-sm: 0.375rem;
            --radius-md: 0.75rem;
            --radius-lg: 1.25rem;
            --radius-xl: 1.75rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--body-bg);
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        ul {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== Header / Navigation (SaaS Command Bar Style) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            transition: var(--transition);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.3px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 800;
            letter-spacing: 0;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-item {
            margin: 0;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-link.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--gray-100);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 0 12px;
            gap: 8px;
            transition: var(--transition);
            width: 200px;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: var(--white);
        }
        .nav-search .search-icon {
            color: var(--gray-400);
            font-size: 0.875rem;
            flex-shrink: 0;
        }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 0;
            font-size: 0.85rem;
            color: var(--text-primary);
            width: 100%;
            outline: none;
        }
        .nav-search input::placeholder {
            color: var(--gray-400);
        }
        .search-kbd {
            font-size: 0.65rem;
            color: var(--gray-400);
            background: var(--gray-200);
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
            letter-spacing: 0.3px;
            flex-shrink: 0;
            font-family: inherit;
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border: none;
            border-radius: var(--radius-md);
            transition: var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
            color: #fff;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .navbar-toggler-custom:hover {
            background: var(--gray-100);
        }

        /* ===== Mobile Nav ===== */
        .nav-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 1040;
            backdrop-filter: blur(4px);
        }
        .nav-overlay.open {
            display: block;
        }
        .mobile-nav {
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: var(--white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-lg);
            z-index: 1045;
            padding: 16px 24px 24px;
            display: none;
            max-height: calc(100vh - var(--header-height));
            overflow-y: auto;
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav .nav-links-mobile {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-bottom: 16px;
        }
        .mobile-nav .nav-link-mobile {
            display: block;
            padding: 12px 16px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-nav .nav-link-mobile:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .mobile-nav .nav-link-mobile.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .mobile-nav .btn-nav-cta {
            width: 100%;
            padding: 12px;
            font-size: 1rem;
        }
        .mobile-nav .mobile-search {
            display: flex;
            align-items: center;
            background: var(--gray-100);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 0 12px;
            gap: 8px;
            margin-bottom: 16px;
        }
        .mobile-nav .mobile-search input {
            border: none;
            background: transparent;
            padding: 12px 0;
            font-size: 0.9rem;
            color: var(--text-primary);
            width: 100%;
            outline: none;
        }
        .mobile-nav .mobile-search input::placeholder {
            color: var(--gray-400);
        }
        .mobile-nav .mobile-search .search-icon {
            color: var(--gray-400);
            font-size: 0.9rem;
        }

        /* ===== Hero Section (Product Center) ===== */
        .hero-product {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
            padding: 80px 0 72px;
            position: relative;
            overflow: hidden;
        }
        .hero-product::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-product::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-product .container-custom {
            position: relative;
            z-index: 1;
        }
        .hero-product .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(37, 99, 235, 0.2);
            border: 1px solid rgba(37, 99, 235, 0.3);
            color: #93c5fd;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 20px;
        }
        .hero-product h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .hero-product h1 span {
            background: linear-gradient(135deg, #60a5fa, #38bdf8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-product .hero-desc {
            font-size: 1.15rem;
            color: #cbd5e1;
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-product .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .hero-product .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border: none;
            border-radius: var(--radius-md);
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .hero-product .btn-hero-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(37, 99, 235, 0.4);
            color: #fff;
        }
        .hero-product .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            color: #e2e8f0;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .hero-product .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .hero-product .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-product .hero-stat-item {
            text-align: left;
        }
        .hero-product .hero-stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-product .hero-stat-label {
            font-size: 0.85rem;
            color: #94a3b8;
            margin-top: 4px;
        }

        /* ===== Section Common ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .section-badge {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-title.text-start {
            text-align: left;
        }
        .section-title.text-start p {
            margin: 0;
        }

        /* ===== Product Grid ===== */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .product-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .product-card .card-img {
            height: 200px;
            background: var(--gray-100);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--gray-400);
            position: relative;
            overflow: hidden;
        }
        .product-card .card-img .img-placeholder {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .product-card .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .product-card .card-img .card-tag.hot {
            background: #ef4444;
        }
        .product-card .card-img .card-tag.new {
            background: #10b981;
        }
        .product-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .product-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .product-card .card-body .card-meta {
            display: flex;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .product-card .card-body .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .product-card .card-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .product-card .card-body .card-footer-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .product-card .card-body .card-footer-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }
        .product-card .card-body .card-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 12px;
        }
        .product-card .card-body .card-badge {
            display: inline-block;
            background: var(--gray-100);
            color: var(--text-secondary);
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 500;
        }

        /* ===== Category Tabs ===== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .category-tab {
            display: inline-block;
            padding: 8px 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            transition: var(--transition);
            cursor: pointer;
        }
        .category-tab:hover {
            border-color: var(--primary-light);
            color: var(--primary);
        }
        .category-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== Product Compare ===== */
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .compare-card {
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 24px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .compare-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .compare-card .compare-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .compare-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .compare-card .compare-desc {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .compare-card .compare-price {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            margin: 10px 0 6px;
        }
        .compare-card .compare-price small {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-muted);
        }
        .compare-card .compare-tag {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 0.65rem;
            font-weight: 600;
            margin-top: 4px;
        }

        /* ===== Product Feature ===== */
        .feature-blocks {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            align-items: center;
        }
        .feature-blocks .feature-visual {
            background: var(--gray-100);
            border-radius: var(--radius-lg);
            height: 360px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 4rem;
            color: var(--gray-400);
            position: relative;
            overflow: hidden;
        }
        .feature-blocks .feature-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-blocks .feature-content h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .feature-blocks .feature-content p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-blocks .feature-content .feature-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .feature-blocks .feature-content .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .feature-blocks .feature-content .feature-list li i {
            color: var(--primary);
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--gray-300);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--gray-400);
            font-size: 0.9rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: #94a3b8;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .cta-section .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border: none;
            border-radius: var(--radius-md);
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .cta-section .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(37, 99, 235, 0.4);
            color: #fff;
        }
        .cta-section .btn-cta-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            color: #e2e8f0;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .cta-section .btn-cta-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 64px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            font-size: 0.8rem;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: #94a3b8;
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.8rem;
            color: #64748b;
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-bottom a {
            color: #94a3b8;
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }
        .site-footer .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }
        .site-footer .footer-bottom .footer-links a {
            font-size: 0.8rem;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-area {
            background: var(--white);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
        }
        .breadcrumb-area .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .breadcrumb-area .breadcrumb-list a {
            color: var(--text-secondary);
        }
        .breadcrumb-area .breadcrumb-list a:hover {
            color: var(--primary);
        }
        .breadcrumb-area .breadcrumb-list span {
            color: var(--text-primary);
            font-weight: 500;
        }
        .breadcrumb-area .breadcrumb-list .sep {
            color: var(--gray-300);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-product h1 {
                font-size: 2.6rem;
            }
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-blocks {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .feature-blocks .feature-visual {
                height: 280px;
                order: -1;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .nav-links {
                display: none;
            }
            .nav-search {
                display: none;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .nav-right .btn-nav-cta {
                display: none;
            }
            .hero-product {
                padding: 56px 0 48px;
            }
            .hero-product h1 {
                font-size: 2rem;
            }
            .hero-product .hero-desc {
                font-size: 1rem;
            }
            .hero-product .hero-stats {
                flex-wrap: wrap;
                gap: 24px;
            }
            .hero-product .hero-stat-number {
                font-size: 1.6rem;
            }
            .section-padding {
                padding: 48px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .product-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .compare-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .compare-card {
                padding: 16px 12px;
            }
            .compare-card .compare-icon {
                font-size: 1.6rem;
            }
            .category-tabs {
                gap: 6px;
            }
            .category-tab {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .feature-blocks .feature-content h3 {
                font-size: 1.4rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer .footer-bottom .footer-links {
                flex-wrap: wrap;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .hero-product h1 {
                font-size: 1.6rem;
            }
            .hero-product .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }
            .product-card .card-body {
                padding: 16px;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-in-up {
            animation: fadeInUp 0.6s ease-out forwards;
        }
        .animate-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: category3 */
/* ===== Design Variables ===== */
        :root {
            --primary: #2D6A4F;
            --primary-light: #40916C;
            --primary-dark: #1B4332;
            --primary-bg: #E8F5EE;
            --secondary: #F4A261;
            --secondary-light: #F8C78A;
            --accent: #E76F51;
            --bg: #FFFFFF;
            --bg-alt: #F8FAFB;
            --bg-card: #FFFFFF;
            --text: #1A1A2E;
            --text-light: #5A6A7A;
            --text-muted: #8A9AA8;
            --border: #E2E8F0;
            --border-light: #F0F4F8;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-h);
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        ul {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1050;
            transition: var(--transition);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--text);
            text-decoration: none;
            letter-spacing: -0.3px;
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 800;
            font-size: 15px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(45, 106, 79, 0.25);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
        }
        .nav-item {
            margin: 0;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 15px;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-link.active {
            color: var(--primary-dark);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 0 16px;
            height: 40px;
            min-width: 200px;
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.12);
            background: #fff;
        }
        .nav-search .search-icon {
            color: var(--text-muted);
            font-size: 14px;
            margin-right: 10px;
        }
        .nav-search input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text);
            min-width: 0;
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .search-kbd {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--border-light);
            border: 1px solid var(--border);
            border-radius: 4px;
            padding: 0 6px;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-muted);
            height: 22px;
            margin-left: 8px;
            letter-spacing: -0.2px;
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 24px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(45, 106, 79, 0.25);
            text-decoration: none;
        }
        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(45, 106, 79, 0.35);
            color: #fff;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text);
            padding: 4px 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler-custom:hover {
            color: var(--primary);
        }

        @media (max-width: 992px) {
            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                align-items: stretch;
            }
            .nav-links.show {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-link {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 16px;
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-search {
                min-width: 140px;
            }
            .search-kbd {
                display: none;
            }
            .navbar-toggler-custom {
                display: inline-flex;
            }
        }
        @media (max-width: 576px) {
            .nav-search {
                min-width: 100px;
                padding: 0 12px;
            }
            .nav-search input {
                width: 60px;
            }
            .btn-nav-cta {
                padding: 9px 16px;
                font-size: 13px;
            }
            .nav-logo {
                font-size: 17px;
            }
        }

        /* ===== Hero / Page Banner ===== */
        .page-hero {
            background: linear-gradient(135deg, #F0F7F4 0%, #E2EFE9 50%, #D4E8E0 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(45, 106, 79, 0.08), transparent 70%);
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(244, 162, 97, 0.07), transparent 70%);
            pointer-events: none;
        }
        .page-hero .container-custom {
            position: relative;
            z-index: 1;
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .page-hero .breadcrumb a {
            color: var(--text-muted);
        }
        .page-hero .breadcrumb a:hover {
            color: var(--primary);
        }
        .page-hero .breadcrumb .sep {
            color: var(--border);
        }
        .page-hero .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -1px;
            line-height: 1.2;
        }
        .page-hero h1 span {
            color: var(--primary);
        }
        .page-hero p {
            font-size: 18px;
            color: var(--text-light);
            max-width: 640px;
            line-height: 1.7;
        }
        .hero-badge-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 28px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(45, 106, 79, 0.15);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-light);
        }
        .hero-badge i {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 60px 0 40px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-hero p {
                font-size: 16px;
            }
        }
        @media (max-width: 576px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .hero-badge-group {
                gap: 8px;
            }
            .hero-badge {
                padding: 6px 14px;
                font-size: 13px;
            }
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 80px 0;
        }
        .section-block-alt {
            background: var(--bg-alt);
        }
        .section-block-dark {
            background: var(--primary-dark);
            color: #fff;
        }
        .section-title {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-title h2 {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-light);
            line-height: 1.7;
        }
        .section-title-dark h2 {
            color: #fff;
        }
        .section-title-dark p {
            color: rgba(255, 255, 255, 0.75);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 50px;
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.3px;
            margin-bottom: 16px;
        }
        .section-label i {
            font-size: 14px;
        }

        @media (max-width: 768px) {
            .section-block {
                padding: 56px 0;
            }
            .section-title h2 {
                font-size: 28px;
            }
            .section-title {
                margin-bottom: 32px;
            }
        }
        @media (max-width: 576px) {
            .section-title h2 {
                font-size: 24px;
            }
            .section-title p {
                font-size: 15px;
            }
        }

        /* ===== Service Cards (板块1) ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-bg);
        }
        .service-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: #fff;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: 0 6px 20px rgba(45, 106, 79, 0.20);
        }
        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .service-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .service-card .tag {
            display: inline-block;
            margin-top: 16px;
            padding: 4px 14px;
            border-radius: 50px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
        }

        @media (max-width: 992px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
            .service-card {
                padding: 24px 20px;
            }
        }

        /* ===== Process Flow (板块2) ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover {
            box-shadow: var(--shadow);
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 800;
            font-size: 18px;
            margin-bottom: 16px;
        }
        .process-step h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .process-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary-light);
            opacity: 0.5;
        }

        @media (max-width: 992px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .process-arrow {
                display: none;
            }
        }
        @media (max-width: 576px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ (板块3) ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 0 24px;
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: var(--primary-bg);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            gap: 16px;
            user-select: none;
        }
        .faq-question i {
            color: var(--primary);
            font-size: 18px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-answer-inner {
            padding-bottom: 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        @media (max-width: 576px) {
            .faq-item {
                padding: 0 16px;
            }
            .faq-question {
                font-size: 15px;
                padding: 14px 0;
            }
        }

        /* ===== CTA (板块4) ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.05), transparent 70%);
            pointer-events: none;
        }
        .cta-block h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .cta-block p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-block .btn-cta-big {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 40px;
            border-radius: 50px;
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 17px;
            border: none;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            text-decoration: none;
        }
        .cta-block .btn-cta-big:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
            color: var(--primary-dark);
            background: #f5f5f5;
        }
        .cta-block .btn-cta-big i {
            font-size: 18px;
        }
        .cta-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .cta-stat-item {
            text-align: center;
        }
        .cta-stat-item .num {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .cta-stat-item .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .cta-block {
                padding: 48px 24px;
                border-radius: var(--radius);
            }
            .cta-block h2 {
                font-size: 28px;
            }
            .cta-stats {
                gap: 24px;
            }
            .cta-stat-item .num {
                font-size: 26px;
            }
        }
        @media (max-width: 576px) {
            .cta-block h2 {
                font-size: 24px;
            }
            .cta-block .btn-cta-big {
                padding: 12px 28px;
                font-size: 15px;
            }
            .cta-stats {
                gap: 16px;
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== Contact / Form (板块5) ===== */
        .contact-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .contact-info h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .contact-info p {
            color: var(--text-light);
            font-size: 16px;
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .contact-methods {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .contact-method {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 20px;
            background: var(--bg-alt);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .contact-method:hover {
            border-color: var(--primary-bg);
            box-shadow: var(--shadow);
        }
        .contact-method .cm-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
        }
        .contact-method .cm-text {
            font-weight: 600;
            font-size: 15px;
        }
        .contact-method .cm-desc {
            font-size: 13px;
            color: var(--text-muted);
        }
        .contact-form {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 32px;
            box-shadow: var(--shadow);
        }
        .contact-form h4 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .contact-form .form-sub {
            color: var(--text-light);
            font-size: 15px;
            margin-bottom: 24px;
        }
        .contact-form .form-control,
        .contact-form .form-select {
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 12px 16px;
            font-size: 15px;
            transition: var(--transition);
            background: var(--bg);
        }
        .contact-form .form-control:focus,
        .contact-form .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.12);
        }
        .contact-form textarea {
            resize: vertical;
            min-height: 120px;
        }
        .contact-form .btn-primary {
            background: var(--primary);
            border: none;
            border-radius: 50px;
            padding: 12px 32px;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(45, 106, 79, 0.20);
        }
        .contact-form .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(45, 106, 79, 0.30);
        }

        @media (max-width: 992px) {
            .contact-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 576px) {
            .contact-form {
                padding: 24px 20px;
            }
            .contact-info h3 {
                font-size: 24px;
            }
        }

        /* ===== Feature Cards Alt (板块6) ===== */
        .feature-alt-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-alt-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .feature-alt-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-alt-card .fac-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 18px;
        }
        .feature-alt-card h4 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-alt-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .feature-alt-card .link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
        }
        .feature-alt-card .link-arrow i {
            transition: var(--transition);
        }
        .feature-alt-card .link-arrow:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 992px) {
            .feature-alt-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .feature-alt-grid {
                grid-template-columns: 1fr;
            }
            .feature-alt-card {
                padding: 24px 20px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0F1A14;
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
            font-size: 15px;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-links {
            display: flex;
            gap: 20px;
        }
        .footer-links a {
            font-size: 13px;
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                flex-wrap: wrap;
                justify-content: center;
            }
        }

        /* ===== Responsive Helpers ===== */
        @media (max-width: 992px) {
            body {
                padding-top: var(--header-h);
            }
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 48px 0;
            }
        }

        /* ===== Bootstrap Overrides ===== */
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .form-control,
        .form-select {
            border-radius: var(--radius-sm);
        }
        .form-control:focus,
        .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.12);
        }