/* roulang page: index */
:root {
            --primary: #0F766E;
            --primary-dark: #0B5F59;
            --primary-light: rgba(15, 118, 110, 0.1);
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --dark: #1C1917;
            --light-bg: #F5F5F4;
            --card-bg: #FFFFFF;
            --text-main: #292524;
            --text-secondary: #57534E;
            --text-muted: #A8A29E;
            --border-color: rgba(28, 25, 23, 0.08);
            --radius-card: 18px;
            --radius-img: 14px;
            --radius-btn: 999px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 24px 50px rgba(0, 0, 0, 0.14);
            --section-space: 96px;
            --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--light-bg);
            color: var(--text-main);
            line-height: 1.8;
            overflow-x: hidden;
            font-size: 1rem;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
        }
        .section-pad {
            padding: var(--section-space) 0;
        }
        .bg-light-section {
            background: var(--light-bg);
        }
        .bg-white-section {
            background: #FFFFFF;
        }
        .btn {
            border-radius: var(--radius-btn);
            padding: 0.65rem 1.75rem;
            font-weight: 600;
            font-size: 0.95rem;
            border: 2px solid transparent;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:focus,
        .btn-ghost:focus,
        .btn-outline-primary:focus,
        .btn-accent:focus,
        .btn-primary:focus {
            outline: 3px solid rgba(15, 118, 110, 0.25);
            box-shadow: none;
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .btn-accent {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--dark);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-accent:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .btn-outline-primary {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: #fff;
        }
        .btn-white-accent {
            background: #fff;
            color: var(--dark);
            border-color: #fff;
        }
        .btn-white-accent:hover {
            background: var(--accent);
            color: var(--dark);
            border-color: var(--accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .badge-tag {
            display: inline-block;
            padding: 0.35rem 1rem;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
        }
        .badge-accent {
            display: inline-block;
            padding: 0.35rem 1rem;
            border-radius: 999px;
            background: var(--accent);
            color: var(--dark);
            font-size: 0.8rem;
            font-weight: 700;
        }
        .badge-gray {
            display: inline-block;
            padding: 0.35rem 1rem;
            border-radius: 999px;
            background: rgba(87, 83, 78, 0.12);
            color: var(--text-secondary);
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* Navbar */
        .navbar {
            background: rgba(255, 255, 255, 0.55) !important;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.5);
            transition: background 0.3s ease, box-shadow 0.3s ease;
            padding: 0.75rem 0;
            z-index: 1050;
            position: fixed;
            width: 100%;
            top: 0;
        }
        .navbar.scrolled {
            background: rgba(255, 255, 255, 0.95) !important;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border-bottom-color: var(--border-color);
        }
        .navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-main) !important;
            letter-spacing: -0.01em;
        }
        .navbar .navbar-brand svg {
            width: 36px;
            height: 36px;
        }
        .navbar .navbar-nav {
            gap: 0.25rem;
            margin-left: auto;
            margin-right: auto;
        }
        .navbar .nav-link {
            font-weight: 600;
            color: var(--text-main);
            padding: 0.5rem 1rem;
            border-radius: 8px;
            position: relative;
            transition: color 0.25s;
        }
        .navbar .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.25s ease;
        }
        .navbar .nav-link:hover::after,
        .navbar .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar .nav-link:hover,
        .navbar .nav-link.active {
            color: var(--primary);
        }
        .navbar .nav-cta-wrap {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar .btn-nav-cta {
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            padding: 0.45rem 1.25rem;
            font-weight: 600;
            font-size: 0.9rem;
            border: 2px solid var(--primary);
            transition: background 0.3s ease, border-color 0.3s ease;
        }
        .navbar .btn-nav-cta:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .nav-search-toggle {
            background: transparent;
            border: none;
            font-size: 1.15rem;
            color: var(--text-main);
            padding: 0.5rem;
            border-radius: 50%;
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s;
            cursor: pointer;
        }
        .nav-search-toggle:hover {
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
        }
        .navbar-toggler {
            border: none;
            font-size: 1.3rem;
            color: var(--text-main);
            padding: 0.35rem 0.6rem;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 3px solid rgba(15, 118, 110, 0.25);
            border-radius: 8px;
        }
        .nav-search-box {
            width: 0;
            overflow: hidden;
            transition: width 0.35s ease;
            display: inline-block;
        }
        .nav-search-box.open {
            width: 200px;
        }
        .nav-search-box .form-control {
            border-radius: 999px;
            border: 1px solid rgba(28, 25, 23, 0.15);
            padding: 0.4rem 1rem;
            font-size: 0.9rem;
            background: #fff;
        }
        .nav-search-box .form-control:focus {
            outline: 3px solid rgba(15, 118, 110, 0.25);
            border-color: var(--primary);
            box-shadow: none;
        }

        /* Hero */
        .hero {
            height: 100vh;
            min-height: 640px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            display: flex;
            align-items: center;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(28, 25, 23, 0.72) 0%, rgba(28, 25, 23, 0.35) 40%, rgba(28, 25, 23, 0.15) 70%, rgba(28, 25, 23, 0.05) 100%);
            z-index: 1;
        }
        .hero .hero-content {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 780px;
            padding: 2rem 0;
        }
        .hero .hero-logo {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            font-size: 1.6rem;
            color: var(--accent);
        }
        .hero h1 {
            font-size: 2.9rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 1.2rem;
            letter-spacing: -0.01em;
            color: #fff;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }
        .hero .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 500px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero .hero-btns {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .hero .hero-scroll {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.4rem;
            animation: hero-bounce 2s ease-in-out infinite;
        }
        @keyframes hero-bounce {
            0%,
            100% {
                transform: translate(-50%, 0);
            }
            50% {
                transform: translate(-50%, 10px);
            }
        }

        /* Trust bar */
        .trust-bar {
            background: var(--light-bg);
            border-bottom: 1px solid var(--border-color);
            padding: 1.8rem 0;
        }
        .trust-item {
            text-align: center;
            padding: 0.4rem 1rem;
            position: relative;
        }
        .trust-item+.trust-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            height: 40px;
            width: 1px;
            background: rgba(28, 25, 23, 0.08);
        }
        .trust-item .trust-num {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .trust-item .trust-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 0.2rem;
        }

        /* Features */
        .features-section {
            background: var(--light-bg);
            position: relative;
        }
        .features-left {
            position: sticky;
            top: 120px;
        }
        .features-left .section-tag {
            display: inline-block;
            padding: 0.3rem 1rem;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .features-left h2 {
            font-size: 2.1rem;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 1rem;
            color: var(--text-main);
        }
        .features-left p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            max-width: 360px;
        }
        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }
        .features-grid .feature-card:nth-child(2) {
            margin-top: 40px;
        }
        .features-grid .feature-card:nth-child(4) {
            margin-top: 40px;
        }
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .feature-card .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--primary);
            margin-bottom: 1rem;
            transition: background 0.3s ease, color 0.3s ease;
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 1rem;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex-grow: 1;
        }
        .feature-card .feature-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: gap 0.25s;
        }
        .feature-card .feature-link:hover {
            gap: 0.55rem;
            color: var(--primary-dark);
        }

        /* Demo */
        .demo-section {
            background: var(--dark);
            position: relative;
            padding: var(--section-space) 0;
            overflow: hidden;
        }
        .demo-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(15, 118, 110, 0.2), transparent 70%);
        }
        .demo-section .section-kicker {
            display: inline-block;
            padding: 0.3rem 1rem;
            border-radius: 999px;
            background: rgba(15, 118, 110, 0.2);
            color: #5EEAD4;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .demo-section h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .demo-section .demo-lead {
            color: rgba(255, 255, 255, 0.7);
            max-width: 480px;
            margin-bottom: 2.5rem;
        }
        .demo-window {
            background: #1a1a1a;
            border-radius: 16px;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.08);
            overflow: hidden;
            margin-bottom: 3rem;
        }
        .demo-window-top {
            background: rgba(255, 255, 255, 0.06);
            padding: 1rem 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .demo-window-top .dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }
        .demo-window-top .dot-red {
            background: rgba(239, 68, 68, 0.7);
        }
        .demo-window-top .dot-yellow {
            background: rgba(245, 158, 11, 0.7);
        }
        .demo-window-top .dot-green {
            background: rgba(16, 185, 129, 0.7);
        }
        .demo-window-body {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .demo-window-body::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 118, 110, 0.35), rgba(28, 25, 23, 0.2));
        }
        .demo-steps {
            display: flex;
            gap: 2rem;
            margin-top: 1rem;
            position: relative;
        }
        .demo-step {
            flex: 1;
            position: relative;
            padding: 0.5rem 0.5rem 0.5rem 0;
        }
        .demo-step .step-num {
            display: inline-block;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            line-height: 32px;
            text-align: center;
            margin-bottom: 0.7rem;
        }
        .demo-step h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .demo-step p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .demo-step::after {
            content: '';
            position: absolute;
            top: 48px;
            left: 36px;
            right: -30px;
            height: 1px;
            border-top: 2px dashed rgba(255, 255, 255, 0.15);
            z-index: 0;
        }
        .demo-step:last-child::after {
            display: none;
        }

        /* News */
        .news-section {
            background: var(--light-bg);
        }
        .news-section .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }
        .news-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 0;
        }
        .news-section .news-cats {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .news-section .news-cats a {
            padding: 0.4rem 1.1rem;
            border-radius: 999px;
            background: #fff;
            border: 1px solid var(--border-color);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all 0.25s;
        }
        .news-section .news-cats a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .news-card {
            display: flex;
            gap: 1.25rem;
            background: #fff;
            border-radius: var(--radius-card);
            padding: 1.1rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            margin-bottom: 1rem;
        }
        .news-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .news-card .news-thumb {
            width: 176px;
            min-width: 176px;
            border-radius: 12px;
            overflow: hidden;
            display: block;
            position: relative;
        }
        .news-card .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.03);
        }
        .news-card .news-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }
        .news-card .news-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-card .news-body h3 a {
            color: var(--text-main);
        }
        .news-card .news-body h3 a:hover {
            color: var(--primary);
        }
        .news-card .news-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 0.4rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.6;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .news-card .news-meta .badge-category {
            background: var(--primary-light);
            color: var(--primary);
            padding: 0.2rem 0.75rem;
            border-radius: 999px;
            font-weight: 600;
        }
        .news-empty {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 3rem 2rem;
            text-align: center;
            border: 2px dashed rgba(28, 25, 23, 0.15);
            color: var(--text-muted);
        }
        .news-empty i {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            display: block;
            color: rgba(28, 25, 23, 0.15);
        }

        /* Proof */
        .proof-section {
            background: #fff;
        }
        .proof-stats {
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .proof-stats .stat-item {
            text-align: center;
        }
        .proof-stats .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .proof-stats .stat-label {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .testimonial-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-left: 4px solid var(--accent);
            border-radius: 14px;
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease;
            height: 100%;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }
        .testimonial-card .quote {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 1rem;
            font-style: italic;
        }
        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .testimonial-card .avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            object-fit: cover;
            background: var(--primary-light);
        }
        .testimonial-card .author-name {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-main);
        }
        .testimonial-card .author-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Pricing */
        .pricing-section {
            background: var(--light-bg);
        }
        .pricing-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
            color: var(--text-main);
        }
        .pricing-section .pricing-lead {
            color: var(--text-secondary);
            max-width: 580px;
            margin: 0 auto 2.5rem;
        }
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            align-items: stretch;
        }
        .pricing-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 2.2rem 2rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .pricing-card.recommended {
            border: 2px solid var(--primary);
            box-shadow: 0 16px 40px rgba(15, 118, 110, 0.14);
        }
        .pricing-card .pricing-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: var(--dark);
            border-radius: 999px;
            padding: 0.2rem 1.1rem;
            font-size: 0.8rem;
            font-weight: 700;
            white-space: nowrap;
        }
        .pricing-card .plan-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.8rem;
        }
        .pricing-card .plan-price {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 0.2rem;
            font-variant-numeric: tabular-nums;
        }
        .pricing-card .plan-price span {
            font-size: 1rem;
            font-weight: 400;
            color: var(--text-muted);
        }
        .pricing-card .plan-period {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
        }
        .pricing-card ul {
            list-style: none;
            padding: 0;
            margin: 0 0 1.8rem;
            flex-grow: 1;
        }
        .pricing-card ul li {
            padding: 0.4rem 0;
            font-size: 0.92rem;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
        }
        .pricing-card ul li i {
            color: var(--primary);
            margin-top: 0.28rem;
            font-size: 0.85rem;
        }
        .pricing-card .btn {
            width: 100%;
            justify-content: center;
        }
        .pricing-card .btn-outline-primary {
            border-color: var(--primary);
            color: var(--primary);
        }
        .pricing-card .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        /* FAQ */
        .faq-section {
            background: #fff;
        }
        .faq-sidebar {
            position: sticky;
            top: 120px;
        }
        .faq-sidebar h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
            color: var(--text-main);
        }
        .faq-sidebar>p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }
        .faq-sidebar .faq-contact {
            background: var(--light-bg);
            border-radius: 14px;
            padding: 1.2rem 1.5rem;
            display: flex;
            align-items: center;
            gap: 1rem;
            border: 1px solid var(--border-color);
        }
        .faq-sidebar .faq-contact i {
            font-size: 1.4rem;
            color: var(--primary);
        }
        .faq-sidebar .faq-contact .contact-num {
            font-weight: 700;
            color: var(--text-main);
            font-size: 1rem;
        }
        .faq-sidebar .faq-contact .contact-label {
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .accordion {
            --bs-accordion-border-width: 0;
            --bs-accordion-bg: transparent;
            --bs-accordion-btn-focus-box-shadow: none;
        }
        .accordion-item {
            background: transparent;
            border-bottom: 1px solid var(--border-color);
            border-radius: 0 !important;
        }
        .accordion-item:first-child {
            border-top: 1px solid var(--border-color);
        }
        .accordion-button {
            background: transparent;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-main);
            padding: 1.4rem 0.5rem;
            border-radius: 0 !important;
            position: relative;
            transition: color 0.25s;
        }
        .accordion-button::after {
            content: '+';
            background: none;
            font-family: sans-serif;
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--primary);
            transform: none;
            transition: transform 0.3s ease;
            width: auto;
            height: auto;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--primary);
            background: none;
        }
        .accordion-button:hover,
        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
            box-shadow: none;
        }
        .accordion-button:focus {
            outline: 3px solid rgba(15, 118, 110, 0.15);
            box-shadow: none;
            border-radius: 8px !important;
        }
        .accordion-body {
            padding: 0 0.5rem 1.4rem;
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        /* CTA section */
        .cta-section {
            background: var(--dark);
            padding: var(--section-space) 0;
            position: relative;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(28, 25, 23, 0.92), rgba(15, 118, 110, 0.6));
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.1rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 2rem;
            font-size: 1.05rem;
        }

        /* Footer */
        .footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 4rem 0 0;
            position: relative;
        }
        .footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.4rem;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .footer .footer-brand svg {
            width: 34px;
            height: 34px;
        }
        .footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
        }
        .footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 0.6rem;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color 0.25s;
        }
        .footer ul li a:hover {
            color: var(--accent);
        }
        .footer .footer-contact li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer .footer-contact li i {
            width: 20px;
            color: var(--accent);
        }
        .footer .footer-social {
            display: flex;
            gap: 0.6rem;
            margin-top: 1rem;
        }
        .footer .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            transition: background 0.25s, color 0.25s;
        }
        .footer .footer-social a:hover {
            background: var(--accent);
            color: var(--dark);
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.2rem 0;
            margin-top: 3rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            text-align: center;
        }

        /* Floating CTA */
        .floating-cta {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 1050;
            border-radius: 999px;
            background: var(--accent);
            color: var(--dark);
            border: none;
            padding: 0.85rem 1.6rem;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.4s ease;
            text-decoration: none;
        }
        .floating-cta.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .floating-cta:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(217, 119, 6, 0.4);
        }
        .floating-cta:active {
            transform: translateY(1px);
        }
        .floating-cta .fa-message {
            font-size: 1.1rem;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                border-radius: 16px;
                margin-top: 0.8rem;
                padding: 1.2rem;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border-color);
            }
            .navbar .navbar-nav {
                gap: 0.15rem;
                margin: 0;
            }
            .navbar .nav-cta-wrap {
                margin-top: 1rem;
                justify-content: center;
            }
            .features-left {
                position: static;
                margin-bottom: 2rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .features-grid .feature-card:nth-child(2),
            .features-grid .feature-card:nth-child(4) {
                margin-top: 0;
            }
            .demo-step::after {
                display: none;
            }
            .demo-steps {
                flex-direction: column;
                gap: 1.5rem;
            }
            .news-card .news-thumb {
                width: 120px;
                min-width: 120px;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }
            .pricing-card.recommended {
                order: -1;
            }
            .proof-stats .stat-item {
                margin-bottom: 1rem;
            }
            .faq-sidebar {
                position: static;
                margin-bottom: 2rem;
            }
        }
        @media (max-width: 767.98px) {
            .hero h1 {
                font-size: 2.1rem;
            }
            .hero .hero-sub {
                font-size: 1rem;
            }
            .hero {
                min-height: 560px;
            }
            .section-pad {
                --section-space: 64px;
            }
            .navbar .nav-search-box.open {
                width: 100%;
                position: absolute;
                left: 0;
                right: 0;
                top: 100%;
                padding: 0.75rem 1.25rem;
                background: rgba(255, 255, 255, 0.97);
                box-shadow: var(--shadow-sm);
            }
        }
        @media (max-width: 575.98px) {
            .trust-item+.trust-item::before {
                display: none;
            }
            .trust-item {
                padding: 0.5rem;
            }
            .trust-item .trust-num {
                font-size: 1.6rem;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card .news-thumb {
                width: 100%;
                min-width: 0;
                height: 140px;
            }
            .news-card .news-body h3 {
                white-space: normal;
                -webkit-line-clamp: 2;
                display: -webkit-box;
                -webkit-box-orient: vertical;
                overflow: hidden;
            }
            .news-section .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.8rem;
            }
            .demo-window-body {
                min-height: 220px;
            }
            .floating-cta {
                padding: 0;
                width: 56px;
                height: 56px;
                border-radius: 50%;
                justify-content: center;
                bottom: 20px;
                right: 20px;
            }
            .floating-cta .cta-text {
                display: none;
            }
            .hero .hero-btns .btn {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: article */
:root {
            --primary: #0F766E;
            --primary-dark: #0B5F59;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --dark: #1C1917;
            --light: #F5F5F4;
            --white: #FFFFFF;
            --text: #292524;
            --text-secondary: #57534E;
            --text-muted: #A8A29E;
            --border: rgba(28,25,23,0.08);
            --radius: 16px;
            --radius-sm: 12px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 12px 30px rgba(0,0,0,0.10);
            --font: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--light);
            color: var(--text);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color .2s ease;
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 导航 ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1030;
            padding: 14px 0;
            background: rgba(255,255,255,0.55);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.5);
            transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
        }

        .navbar.scrolled {
            background: rgba(255,255,255,0.95);
            box-shadow: 0 4px 20px rgba(0,0,0,0.06);
            border-bottom: 1px solid rgba(28,25,23,0.06);
            padding: 10px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--text) !important;
            letter-spacing: -0.5px;
        }

        .navbar-brand svg {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }

        .navbar-nav {
            gap: 2px;
            margin: 0 auto;
        }

        .nav-link {
            font-weight: 500;
            color: var(--text) !important;
            padding: 8px 16px !important;
            position: relative;
            border-radius: 999px;
            transition: background .2s ease, color .2s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width .3s ease;
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 24px;
        }

        .nav-link:hover {
            color: var(--primary) !important;
            background: rgba(15,118,110,0.06);
        }

        .nav-link.active {
            color: var(--primary) !important;
            font-weight: 600;
        }

        .nav-cta-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-nav-cta {
            background: var(--primary);
            color: #fff !important;
            border-radius: 999px;
            padding: 8px 22px;
            font-weight: 600;
            font-size: .9rem;
            border: 1px solid transparent;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(15,118,110,0.24);
        }

        .nav-search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background: var(--white);
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all .2s ease;
            cursor: pointer;
        }

        .nav-search-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .nav-search-box {
            width: 0;
            overflow: hidden;
            transition: width .35s ease;
        }

        .nav-search-box.open {
            width: 180px;
        }

        .nav-search-box .form-control {
            border-radius: 999px;
            padding: 8px 16px;
            border: 1px solid var(--border);
            font-size: .875rem;
            background: var(--white);
            color: var(--text);
        }

        .nav-search-box .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15,118,110,0.15);
        }

        .navbar-toggler {
            border: none;
            font-size: 1.25rem;
            color: var(--text) !important;
            box-shadow: none !important;
            width: 44px;
            height: 44px;
            padding: 0;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--white);
                border-radius: var(--radius);
                padding: 20px;
                margin-top: 12px;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border);
            }
            .navbar-nav {
                flex-direction: column;
                gap: 4px;
                width: 100%;
            }
            .nav-cta-wrap {
                margin-top: 12px;
                padding-top: 16px;
                border-top: 1px solid var(--border);
                flex-wrap: wrap;
                width: 100%;
            }
            .nav-search-box {
                width: 100%;
                order: 3;
            }
            .nav-search-box.open {
                width: 100%;
            }
            .nav-search-box .form-control {
                width: 100%;
            }
            .btn-nav-cta {
                flex: 1;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-brand svg {
                width: 32px;
                height: 32px;
            }
            .navbar {
                padding: 10px 0;
            }
        }

        /* ===== 文章头部区 ===== */
        .article-hero {
            padding: 150px 0 56px;
            background: linear-gradient(180deg, rgba(15,118,110,0.06) 0%, rgba(245,245,244,0) 100%), var(--light);
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: .875rem;
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .breadcrumb-nav a {
            color: var(--text-secondary);
            transition: color .2s ease;
        }

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

        .breadcrumb-nav .current {
            color: var(--text);
            font-weight: 500;
            max-width: 360px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-hero h1 {
            font-size: 2.75rem;
            font-weight: 800;
            line-height: 1.35;
            max-width: 840px;
            margin: 0 0 20px;
            color: var(--text);
            letter-spacing: -1px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--text-secondary);
            font-size: .9rem;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 120px 0 40px;
            }
            .article-hero h1 {
                font-size: 1.85rem;
            }
            .article-meta {
                gap: 12px;
                font-size: .82rem;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .breadcrumb-nav {
                font-size: .8rem;
                gap: 5px;
            }
        }

        /* ===== 正文区 ===== */
        .article-body {
            padding: 64px 0 32px;
            background: var(--white);
        }

        .article-content {
            max-width: 720px;
            margin: 0 auto;
            font-size: 1.125rem;
            line-height: 1.8;
            color: var(--text);
        }

        .article-content p {
            margin-bottom: 1.5em;
        }

        .article-content img {
            width: 100%;
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            margin: 2.25rem 0 1rem;
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 1.75rem 0 .75rem;
        }

        .article-content blockquote {
            background: var(--light);
            border-radius: 8px;
            padding: 20px 24px;
            border-left: 4px solid var(--accent);
            color: var(--text-secondary);
            margin: 1.75rem 0;
            font-style: normal;
        }

        .article-content ul,
        .article-content ol {
            padding-left: 1.5rem;
            margin-bottom: 1.5em;
        }

        .article-content li {
            margin-bottom: .6em;
        }

        .article-content a {
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--primary-dark);
            text-decoration-thickness: 2px;
        }

        .not-found-box {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            padding: 60px 0;
        }

        .not-found-box .empty-icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            border: 2px dashed var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--text-muted);
            margin: 0 auto 24px;
        }

        .not-found-box h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .btn-outline-primary {
            border-radius: 999px;
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 10px 28px;
            font-weight: 600;
            transition: all .2s ease;
            background: transparent;
            display: inline-block;
        }

        .btn-outline-primary:hover {
            background: rgba(15,118,110,0.08);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        /* ===== 标签区 ===== */
        .tags-wrap {
            max-width: 720px;
            margin: 40px auto 0;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .tags-wrap .label {
            font-size: .875rem;
            color: var(--text-muted);
            margin-right: 8px;
        }

        .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 999px;
            background: #EEEDEB;
            color: var(--text);
            font-size: .85rem;
            font-weight: 500;
            margin-right: 8px;
            margin-bottom: 8px;
            transition: all .2s ease;
            border: 1px solid transparent;
        }

        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 28px;
            color: var(--primary);
            font-weight: 600;
            font-size: .95rem;
            transition: gap .2s ease;
        }

        .back-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        @media (max-width: 768px) {
            .article-body {
                padding: 48px 0 24px;
            }
            .article-content {
                font-size: 1rem;
            }
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            background: var(--light);
            padding: 72px 0;
            border-top: 1px solid var(--border);
        }

        .related-section .section-head {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            margin-bottom: 36px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .related-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            margin: 0;
            letter-spacing: -0.5px;
        }

        .related-more {
            color: var(--text-secondary);
            font-size: .9rem;
            font-weight: 500;
        }

        .related-more:hover {
            color: var(--primary);
        }

        .related-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .related-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-bottom: 1px solid var(--border);
            transition: transform .4s ease;
        }

        .related-card:hover .card-img {
            transform: scale(1.02);
        }

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

        .related-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-meta {
            font-size: .85rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .related-card .card-link {
            margin-top: auto;
            font-weight: 600;
            font-size: .9rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap .2s ease;
        }

        .related-card .card-link:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

        .related-empty {
            text-align: center;
            padding: 48px 20px;
            background: var(--white);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            color: var(--text-muted);
        }

        .related-empty p {
            margin-bottom: 8px;
        }

        @media (max-width: 768px) {
            .related-section {
                padding: 56px 0;
            }
            .related-section h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== CTA ===== */
        .article-cta {
            background: var(--dark);
            padding: 72px 0;
            text-align: center;
        }

        .article-cta h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .article-cta p {
            color: #A8A29E;
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1rem;
        }

        .btn-cta {
            background: var(--accent);
            color: #1C1917 !important;
            border-radius: 999px;
            padding: 12px 36px;
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid transparent;
            display: inline-block;
            transition: all .2s ease;
            line-height: 1.5;
        }

        .btn-cta:hover {
            background: var(--accent-dark);
            color: #fff !important;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.28);
        }

        .btn-cta:active {
            transform: translateY(0);
        }

        @media (max-width: 768px) {
            .article-cta {
                padding: 56px 0;
            }
            .article-cta h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark);
            color: #D6D3D1;
            padding: 72px 0 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .footer-brand svg {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }

        .footer-desc {
            margin-top: 16px;
            color: #A8A29E;
            font-size: .95rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 20px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid rgba(255,255,255,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #D6D3D1;
            font-size: .9rem;
            transition: all .2s ease;
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

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

        .footer ul li {
            margin-bottom: 10px;
            font-size: .9rem;
        }

        .footer ul a {
            color: #A8A29E;
            transition: color .2s ease;
        }

        .footer ul a:hover {
            color: var(--accent);
        }

        .footer-contact li {
            color: #A8A29E;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .footer-contact i {
            color: var(--accent);
            margin-top: 4px;
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: 48px;
            padding: 24px 0;
        }

        .footer-bottom .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom p {
            color: #78716C;
            font-size: .85rem;
            margin: 0;
        }

        @media (max-width: 768px) {
            .footer {
                padding-top: 56px;
            }
            .footer-bottom .container {
                flex-direction: column;
                gap: 4px;
            }
        }

        /* ===== 通用按钮焦点状态 ===== */
        .btn-nav-cta:focus-visible,
        .btn-cta:focus-visible,
        .btn-outline-primary:focus-visible,
        .nav-search-toggle:focus-visible,
        .navbar-toggler:focus-visible {
            outline: 3px solid rgba(15,118,110,0.25);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
            --primary: #0F766E;
            --primary-dark: #0B5F59;
            --accent: #F59E0B;
            --ink: #1C1917;
            --bg: #F5F5F4;
            --white: #FFFFFF;
            --text: #292524;
            --text-muted: #57534E;
            --text-light: #A8A29E;
            --border: rgba(28, 25, 23, 0.08);
            --radius-lg: 20px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.14);
            --space-section: 96px;
            --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text);
            background: var(--bg);
            line-height: 1.8;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            transition: all .25s ease;
        }

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

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

        h1,
        h2,
        h3,
        h4,
        h5 {
            line-height: 1.4;
            font-weight: 800;
            color: var(--ink);
        }

        .container {
            max-width: 1200px;
        }

        /* ===== 导航 ===== */
        #mainNavbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.65);
            padding: 14px 0;
            transition: all .3s ease;
        }

        #mainNavbar.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border-bottom-color: rgba(28, 25, 23, 0.06);
            padding: 10px 0;
        }

        #mainNavbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--ink);
            letter-spacing: .5px;
        }

        #mainNavbar .navbar-brand svg {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }

        #mainNavbar .navbar-collapse {
            justify-content: center;
        }

        #mainNavbar .navbar-nav {
            gap: 4px;
            margin-right: auto;
            margin-left: 32px;
        }

        #mainNavbar .nav-link {
            font-size: .95rem;
            font-weight: 600;
            color: var(--text);
            padding: 10px 18px !important;
            border-radius: 999px;
            position: relative;
            transition: all .25s ease;
        }

        #mainNavbar .nav-link::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 2px;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: translateX(-50%);
            transition: width .25s ease;
        }

        #mainNavbar .nav-link:hover {
            color: var(--primary);
        }

        #mainNavbar .nav-link:hover::after {
            width: 60%;
        }

        #mainNavbar .nav-link.active {
            color: var(--primary);
        }

        #mainNavbar .nav-link.active::after {
            width: 60%;
        }

        .nav-cta-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: 8px;
        }

        .nav-search-box {
            width: 0;
            overflow: hidden;
            opacity: 0;
            transition: all .3s ease;
        }

        .nav-search-box.open {
            width: 180px;
            opacity: 1;
        }

        .nav-search-box .form-control {
            border-radius: 999px;
            border: 1px solid rgba(28, 25, 23, 0.12);
            padding: 8px 18px;
            font-size: .875rem;
            background: var(--white);
            box-shadow: none;
            transition: all .25s ease;
        }

        .nav-search-box .form-control:focus {
            border-color: var(--primary);
            outline: 3px solid rgba(15, 118, 110, 0.25);
            outline-offset: 0;
            box-shadow: none;
        }

        .nav-search-toggle {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: none;
            background: transparent;
            color: var(--text);
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all .25s ease;
        }

        .nav-search-toggle:hover {
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
        }

        .nav-search-toggle:focus-visible {
            outline: 3px solid rgba(15, 118, 110, 0.25);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 26px;
            border-radius: 999px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: .9rem;
            transition: all .25s ease;
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(15, 118, 110, 0.30);
        }

        .btn-nav-cta:active {
            transform: translateY(0);
        }

        #mainNavbar .navbar-toggler {
            border: none;
            font-size: 1.2rem;
            color: var(--ink);
            padding: 8px 12px;
            border-radius: 12px;
        }

        #mainNavbar .navbar-toggler:focus {
            box-shadow: none;
            outline: 3px solid rgba(15, 118, 110, 0.25);
        }

        /* ===== 分类横幅 ===== */
        .category-hero {
            position: relative;
            min-height: 40vh;
            display: flex;
            align-items: center;
            padding: 160px 0 90px;
            overflow: hidden;
        }

        .category-hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }

        .category-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(28, 25, 23, 0.88), rgba(28, 25, 23, 0.55));
        }

        .category-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            max-width: 780px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: .82rem;
            font-weight: 600;
            padding: 6px 20px;
            border-radius: 999px;
            margin-bottom: 18px;
            backdrop-filter: blur(6px);
            letter-spacing: 1px;
        }

        .category-hero-content h1 {
            color: #fff;
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.92);
            margin-bottom: 32px;
            font-weight: 400;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 50px;
            padding: 0 34px;
            border-radius: 999px;
            background: var(--accent);
            color: var(--ink);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: all .25s ease;
        }

        .btn-hero-primary:hover {
            background: #E08E0A;
            color: var(--ink);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(245, 158, 11, 0.35);
        }

        .btn-hero-primary:active {
            transform: translateY(0);
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 50px;
            padding: 0 34px;
            border-radius: 999px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.6);
            font-weight: 600;
            font-size: 1rem;
            transition: all .25s ease;
        }

        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-hero-outline:active {
            transform: translateY(0);
        }

        /* ===== 数据条 ===== */
        .stat-bar {
            background: var(--bg);
            padding: 40px 0;
            border-bottom: 1px solid var(--border);
        }

        .stat-item {
            text-align: center;
            padding: 10px 0;
            position: relative;
        }

        .stat-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 48px;
            background: rgba(28, 25, 23, 0.08);
        }

        .stat-num {
            display: block;
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .stat-label {
            display: block;
            font-size: .875rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: var(--space-section) 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 56px;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-head h2 {
            font-size: 2.1rem;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }

        .section-head h2::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: -8px;
            transform: translateX(-50%);
            width: 48px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 1rem;
            margin-top: 16px;
        }

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

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

        /* ===== 服务卡片 ===== */
        .services-section {
            background: var(--white);
        }

        .service-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            height: 100%;
            transition: all .3s ease;
            box-shadow: var(--shadow-sm);
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(15, 118, 110, 0.30);
        }

        .service-icon {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: rgba(15, 118, 110, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.15rem;
            margin-bottom: 20px;
            transition: all .3s ease;
        }

        .service-card:hover .service-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: .925rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 图文交替 ===== */
        .showcase-section {
            background: var(--bg);
        }

        .showcase-block {
            display: flex;
            align-items: center;
            gap: 56px;
            margin-bottom: 80px;
        }

        .showcase-block:last-child {
            margin-bottom: 0;
        }

        .showcase-block:nth-child(even) {
            flex-direction: row-reverse;
        }

        .showcase-media {
            flex: 1;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .showcase-media img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .showcase-media:hover img {
            transform: scale(1.03);
        }

        .showcase-body {
            flex: 1;
        }

        .showcase-body .tag-line {
            display: inline-block;
            font-size: .8rem;
            font-weight: 700;
            color: var(--primary);
            background: rgba(15, 118, 110, 0.08);
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: .5px;
        }

        .showcase-body h2 {
            font-size: 1.75rem;
            margin-bottom: 16px;
        }

        .showcase-body p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .btn-outline-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 30px;
            border-radius: 999px;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            font-weight: 700;
            font-size: .925rem;
            transition: all .25s ease;
        }

        .btn-outline-primary-custom:hover {
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-outline-primary-custom:active {
            transform: translateY(0);
        }

        /* ===== 场景卡片 ===== */
        .scenarios-section {
            background: var(--white);
        }

        .scenario-card {
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--white);
            height: 100%;
            transition: all .3s ease;
            box-shadow: var(--shadow-sm);
        }

        .scenario-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(15, 118, 110, 0.30);
        }

        .scenario-media {
            height: 200px;
            overflow: hidden;
        }

        .scenario-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .scenario-card:hover .scenario-media img {
            transform: scale(1.05);
        }

        .scenario-body {
            padding: 24px;
        }

        .scenario-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .scenario-body p {
            color: var(--text-muted);
            font-size: .9rem;
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .scenario-body a {
            color: var(--primary);
            font-weight: 700;
            font-size: .9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .scenario-body a i {
            transition: transform .25s ease;
        }

        .scenario-body a:hover {
            color: var(--primary-dark);
        }

        .scenario-body a:hover i {
            transform: translateX(4px);
        }

        /* ===== 流程 ===== */
        .process-section {
            background: var(--bg);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
            padding: 30px 16px;
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all .3s ease;
        }

        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(15, 118, 110, 0.25);
        }

        .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 14px;
            border-radius: 50%;
            background: rgba(15, 118, 110, 0.10);
            color: var(--primary);
            font-size: 1.2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-variant-numeric: tabular-nums;
            transition: all .3s ease;
        }

        .process-step:hover .step-num {
            background: var(--primary);
            color: #fff;
        }

        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-step p {
            color: var(--text-muted);
            font-size: .85rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--white);
        }

        .faq-left {
            position: sticky;
            top: 120px;
        }

        .faq-left h2 {
            font-size: 2rem;
            margin-bottom: 14px;
        }

        .faq-left p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .faq-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-contact-item {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text);
            font-size: .95rem;
        }

        .faq-contact-item i {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .9rem;
        }

        .faq-list {
            border-top: 1px solid var(--border);
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
            position: relative;
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 22px 48px 22px 20px;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--ink);
            cursor: pointer;
            position: relative;
            transition: color .25s ease;
            border-radius: 0;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question:focus-visible {
            outline: 3px solid rgba(15, 118, 110, 0.25);
            outline-offset: -3px;
            border-radius: 8px;
        }

        .faq-question i {
            position: absolute;
            right: 18px;
            top: 50%;
            transform: translateY(-50%);
            font-size: .9rem;
            color: var(--text-light);
            transition: transform .3s ease, color .3s ease;
        }

        .faq-item.open .faq-question {
            color: var(--primary);
        }

        .faq-item.open .faq-question::before {
            content: '';
            position: absolute;
            left: 0;
            top: 18px;
            bottom: 18px;
            width: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .faq-item.open .faq-question i {
            transform: translateY(-50%) rotate(45deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }

        .faq-answer p {
            padding: 0 48px 24px 20px;
            color: var(--text-muted);
            font-size: .95rem;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--ink) 0%, #2A2624 100%);
            padding: 90px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            right: -120px;
            bottom: -120px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(15, 118, 110, 0.25);
            filter: blur(40px);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-content h2 {
            color: #fff;
            font-size: 2.2rem;
            margin-bottom: 16px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            margin-bottom: 36px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 52px;
            padding: 0 40px;
            border-radius: 999px;
            background: var(--accent);
            color: var(--ink);
            font-weight: 700;
            font-size: 1rem;
            transition: all .25s ease;
            border: none;
        }

        .btn-cta-accent:hover {
            background: #E08E0A;
            color: var(--ink);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(245, 158, 11, 0.35);
        }

        .btn-cta-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 52px;
            padding: 0 40px;
            border-radius: 999px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
            font-weight: 600;
            transition: all .25s ease;
        }

        .btn-cta-ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--ink);
            color: rgba(255, 255, 255, 0.8);
            padding: 70px 0 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand svg {
            width: 40px;
            height: 40px;
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.62);
            font-size: .9rem;
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .9rem;
            transition: all .25s ease;
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer h5::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

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

        .footer ul li a {
            color: rgba(255, 255, 255, 0.62);
            font-size: .9rem;
            transition: all .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact li {
            color: rgba(255, 255, 255, 0.62);
            font-size: .9rem;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .footer-contact li i {
            color: var(--accent);
            margin-top: 4px;
            font-size: .85rem;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            margin-top: 50px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
        }

        .footer-bottom p {
            margin-bottom: 0;
            color: rgba(255, 255, 255, 0.5);
            font-size: .82rem;
        }

        .footer-icp {
            text-align: right;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            :root {
                --space-section: 64px;
            }

            #mainNavbar .navbar-collapse {
                background: #fff;
                margin: 12px -12px 0;
                padding: 20px;
                border-radius: 16px;
                box-shadow: var(--shadow-md);
            }

            #mainNavbar .navbar-nav {
                margin-left: 0;
                width: 100%;
                gap: 0;
            }

            #mainNavbar .nav-link {
                padding: 14px 16px !important;
                border-radius: 12px;
            }

            #mainNavbar .nav-link::after {
                display: none;
            }

            #mainNavbar .nav-link.active {
                background: rgba(15, 118, 110, 0.08);
            }

            .nav-cta-wrap {
                margin-left: 0;
                margin-top: 16px;
                width: 100%;
                justify-content: flex-start;
            }

            .nav-search-box.open {
                width: 100%;
            }

            .nav-search-toggle {
                flex-shrink: 0;
            }

            .category-hero {
                padding: 130px 0 70px;
                min-height: 35vh;
            }

            .category-hero-content h1 {
                font-size: 2.4rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .showcase-block,
            .showcase-block:nth-child(even) {
                flex-direction: column;
                gap: 32px;
            }

            .showcase-media img {
                height: 250px;
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-bottom p {
                text-align: center;
            }

            .footer-icp {
                text-align: center;
            }
        }

        @media (max-width: 767px) {
            .stat-item:not(:last-child)::after {
                display: none;
            }

            .process-steps {
                grid-template-columns: 1fr;
            }

            .category-hero-content h1 {
                font-size: 1.9rem;
            }

            .section-head h2 {
                font-size: 1.6rem;
            }

            .showcase-body h2 {
                font-size: 1.4rem;
            }

            .cta-content h2 {
                font-size: 1.6rem;
            }

            .hero-actions,
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }

            .btn-hero-primary,
            .btn-hero-outline,
            .btn-cta-accent,
            .btn-cta-ghost {
                width: 100%;
                max-width: 300px;
            }

            .faq-left {
                position: static;
                margin-bottom: 32px;
            }

            .footer-bottom .text-md-end {
                text-align: center !important;
                margin-top: 6px;
            }
        }

        @media (max-width: 575px) {
            .stat-num {
                font-size: 1.7rem;
            }

            .service-card {
                padding: 24px 20px;
            }

            .showcase-media img {
                height: 200px;
            }

            .scenario-media {
                height: 170px;
            }

            .faq-question {
                font-size: .95rem;
                padding-left: 14px;
            }

            .faq-answer p {
                padding-left: 14px;
                padding-right: 30px;
                font-size: .9rem;
            }

            .footer {
                padding-top: 50px;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0F766E;
            --primary-dark: #0B5F59;
            --primary-10: rgba(15, 118, 110, 0.10);
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --dark: #1C1917;
            --light: #F5F5F4;
            --white: #FFFFFF;
            --text-main: #292524;
            --text-secondary: #57534E;
            --text-muted: #A8A29E;
            --border-color: rgba(28, 25, 23, 0.08);
            --radius-card: 16px;
            --radius-img: 14px;
            --radius-btn: 999px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 12px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 24px 60px rgba(0,0,0,0.14);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --space-section: 96px;
        }

        /* ===== 基础 Reset ===== */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--light);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 1.0625rem;
            overflow-x: hidden;
        }

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

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

        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        :focus-visible {
            outline: 3px solid rgba(15, 118, 110, 0.25);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 导航系统 ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.5);
            padding: 14px 0;
            transition: var(--transition);
        }

        .navbar.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border-bottom: 1px solid rgba(28, 25, 23, 0.06);
            padding: 10px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-main) !important;
            letter-spacing: 0.5px;
        }

        .navbar-brand svg {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }

        .navbar-collapse {
            justify-content: flex-end;
        }

        .navbar-nav {
            align-items: center;
            gap: 4px;
            margin-right: 24px;
        }

        .nav-link {
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--text-secondary) !important;
            padding: 8px 16px !important;
            border-radius: 999px;
            position: relative;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--primary) !important;
            background: var(--primary-10);
        }

        .nav-link.active {
            color: var(--primary) !important;
            font-weight: 700;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-cta-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-search-toggle {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            color: var(--text-secondary);
            background: transparent;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .nav-search-toggle:hover {
            color: var(--primary);
            background: var(--primary-10);
        }

        .nav-search-box {
            width: 0;
            overflow: hidden;
            transition: width 0.35s ease;
        }

        .nav-search-box.open {
            width: 200px;
        }

        .nav-search-box .form-control {
            border-radius: 999px;
            border: 1px solid rgba(28, 25, 23, 0.12);
            padding: 8px 18px;
            font-size: 0.875rem;
            background: var(--white);
            transition: var(--transition);
        }

        .nav-search-box .form-control:focus {
            border-color: var(--primary);
            outline: 3px solid rgba(15, 118, 110, 0.25);
            box-shadow: none;
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 42px;
            padding: 8px 22px;
            background: var(--primary);
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: 999px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(15, 118, 110, 0.3);
            color: #fff;
        }

        .navbar-toggler {
            border: none;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            color: var(--text-main);
            font-size: 1.1rem;
            padding: 0;
        }

        .navbar-toggler:hover {
            background: var(--primary-10);
            color: var(--primary);
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 3px solid rgba(15, 118, 110, 0.25);
        }

        /* ===== 分类横幅 Hero ===== */
        .category-hero {
            position: relative;
            min-height: 40vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            padding: 160px 0 80px;
            margin-bottom: 0;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(28, 25, 23, 0.55) 0%, rgba(28, 25, 23, 0.65) 50%, rgba(28, 25, 23, 0.85) 100%);
            z-index: 1;
        }

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

        .category-hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 1px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .category-hero .hero-subtitle {
            font-size: 1.25rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 36px;
            font-weight: 400;
            text-shadow: 0 1px 10px rgba(0, 0, 0, 0.3);
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 按钮体系 ===== */
        .btn-custom-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 50px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 999px;
            border: 2px solid var(--primary);
            transition: var(--transition);
            gap: 8px;
            white-space: nowrap;
        }

        .btn-custom-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(15, 118, 110, 0.3);
        }

        .btn-custom-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 50px;
            padding: 12px 32px;
            background: transparent;
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 999px;
            border: 2px solid rgba(255, 255, 255, 0.7);
            transition: var(--transition);
            gap: 8px;
            white-space: nowrap;
        }

        .btn-custom-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-custom-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 50px;
            padding: 12px 36px;
            background: var(--accent);
            color: var(--dark);
            font-size: 1rem;
            font-weight: 700;
            border-radius: 999px;
            transition: var(--transition);
            gap: 8px;
            white-space: nowrap;
            border: 2px solid var(--accent);
        }

        .btn-custom-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: var(--dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(245, 158, 11, 0.35);
        }

        .btn-custom-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 50px;
            padding: 12px 32px;
            background: transparent;
            color: var(--primary);
            font-size: 1rem;
            font-weight: 600;
            border-radius: 999px;
            border: 2px solid var(--primary);
            transition: var(--transition);
            gap: 8px;
            white-space: nowrap;
        }

        .btn-custom-outline:hover {
            background: var(--primary-10);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(15, 118, 110, 0.12);
        }

        /* ===== 区块通用 ===== */
        .section-spacing {
            padding-top: var(--space-section);
            padding-bottom: var(--space-section);
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            line-height: 1.4;
            color: var(--text-main);
            position: relative;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 640px;
            margin-bottom: 40px;
        }

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

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

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-10);
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .section-label::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
        }

        /* ===== 图文交替区 ===== */
        .alt-block {
            padding: 96px 0;
        }

        .alt-block:nth-child(even) {
            background: var(--light);
        }

        .alt-image-wrap {
            position: relative;
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4 / 3;
        }

        .alt-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .alt-image-wrap:hover img {
            transform: scale(1.03);
        }

        .alt-block .block-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8125rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .alt-block .block-tag i {
            font-size: 1rem;
            color: var(--accent);
        }

        .alt-block h2 {
            font-size: 1.875rem;
            font-weight: 800;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }

        .alt-block .block-desc {
            font-size: 1.0625rem;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .alt-block .block-points {
            list-style: none;
            padding: 0;
            margin: 24px 0 28px;
        }

        .alt-block .block-points li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.9375rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .alt-block .block-points li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 0.85rem;
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            background: var(--primary-10);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 相关主题卡片区 ===== */
        .related-section {
            background: var(--light);
            padding: 96px 0;
        }

        .related-card {
            background: var(--white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            padding: 32px 28px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .related-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 0;
            background: var(--accent);
            transition: height 0.4s ease;
            border-radius: 0 4px 4px 0;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .related-card:hover::before {
            height: 100%;
        }

        .related-card .card-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-10);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--primary);
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .related-card:hover .card-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(-6deg) scale(1.05);
        }

        .related-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .related-card p {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .related-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
        }

        .related-card .card-link i {
            font-size: 0.75rem;
            transition: transform 0.3s ease;
        }

        .related-card .card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        /* ===== 数据统计条 ===== */
        .stats-band {
            background: var(--dark);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-band::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(15, 118, 110, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .stats-band .stat-item {
            text-align: center;
            padding: 20px;
            color: #fff;
        }

        .stats-band .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stats-band .stat-label {
            font-size: 0.9375rem;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 400;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--white);
            padding: 96px 0;
        }

        .faq-guide {
            padding-right: 40px;
        }

        .faq-guide h2 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 20px;
        }

        .faq-guide p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .faq-contact-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9375rem;
        }

        .faq-contact-item:last-child {
            border-bottom: none;
        }

        .faq-contact-item i {
            width: 40px;
            height: 40px;
            background: var(--primary-10);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .faq-accordion {
            border-top: 1px solid var(--border-color);
        }

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

        .faq-accordion .accordion-button {
            background: transparent;
            box-shadow: none;
            padding: 22px 48px 22px 20px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            position: relative;
            border: none;
            transition: var(--transition);
            line-height: 1.5;
        }

        .faq-accordion .accordion-button::after {
            content: '+';
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.5rem;
            font-weight: 300;
            color: var(--text-muted);
            transition: transform 0.3s ease;
            background: none;
            width: auto;
            height: auto;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
            box-shadow: none;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: translateY(-50%) rotate(45deg);
            color: var(--primary);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 3px solid rgba(15, 118, 110, 0.25);
        }

        .faq-accordion .accordion-button::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 2px;
            height: 0;
            background: var(--primary);
            transition: height 0.3s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed)::before {
            height: 60%;
        }

        .faq-accordion .accordion-body {
            padding: 0 20px 24px;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .bottom-cta {
            background: var(--dark);
            padding: 96px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .bottom-cta::before {
            content: '';
            position: absolute;
            bottom: -50%;
            left: 10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(15, 118, 110, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .bottom-cta::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .bottom-cta .cta-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
        }

        .bottom-cta h2 {
            font-size: 2.25rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 18px;
        }

        .bottom-cta p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.0625rem;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark);
            padding: 64px 0 0;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9375rem;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand svg {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            margin-bottom: 20px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

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

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

        .footer ul a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            line-height: 1.6;
        }

        .footer ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-contact li i {
            margin-top: 5px;
            color: var(--primary);
            font-size: 0.85rem;
            width: 16px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 48px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }

        /* ===== 浮动 CTA ===== */
        .floating-cta {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 1050;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--dark);
            padding: 14px 26px;
            border-radius: 999px;
            font-size: 0.9375rem;
            font-weight: 700;
            box-shadow: 0 12px 30px rgba(245, 158, 11, 0.4);
            transition: var(--transition);
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
        }

        .floating-cta.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .floating-cta:hover {
            background: var(--accent-dark);
            color: var(--dark);
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(245, 158, 11, 0.45);
        }

        .floating-cta i {
            font-size: 1rem;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--white);
                margin-top: 12px;
                border-radius: 16px;
                padding: 20px;
                box-shadow: var(--shadow-md);
            }

            .navbar-nav {
                align-items: flex-start;
                margin-right: 0;
                margin-bottom: 16px;
                width: 100%;
            }

            .nav-link {
                width: 100%;
                border-radius: 10px;
            }

            .nav-link.active::after {
                left: 20px;
                transform: none;
                width: 18px;
            }

            .nav-cta-wrap {
                width: 100%;
                flex-wrap: wrap;
            }

            .nav-search-box.open {
                width: 100%;
            }

            .category-hero {
                min-height: 35vh;
                padding: 140px 0 60px;
            }

            .category-hero h1 {
                font-size: 2.25rem;
            }

            .alt-block {
                padding: 72px 0;
            }

            .alt-block .block-desc {
                font-size: 1rem;
            }

            .faq-guide {
                padding-right: 0;
                margin-bottom: 40px;
            }
        }

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

            .section-title {
                font-size: 1.75rem;
            }

            .category-hero {
                min-height: 50vh;
                padding: 130px 0 50px;
            }

            .category-hero h1 {
                font-size: 1.875rem;
            }

            .category-hero .hero-subtitle {
                font-size: 1.0625rem;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
                max-width: 320px;
                margin: 0 auto;
            }

            .hero-actions .btn-custom-primary,
            .hero-actions .btn-custom-outline-light {
                width: 100%;
            }

            .stats-band .stat-number {
                font-size: 1.875rem;
            }

            .faq-accordion .accordion-button {
                font-size: 0.9375rem;
                padding-left: 12px;
            }

            .bottom-cta h2 {
                font-size: 1.75rem;
            }

            .floating-cta {
                padding: 0;
                width: 56px;
                height: 56px;
                justify-content: center;
                border-radius: 50%;
            }

            .floating-cta span {
                display: none;
            }

            .floating-cta i {
                margin: 0;
                font-size: 1.25rem;
            }
        }

        @media (max-width: 575.98px) {
            .section-title {
                font-size: 1.5rem;
            }

            .alt-block h2 {
                font-size: 1.5rem;
            }

            .related-card {
                padding: 24px 20px;
            }

            .footer-bottom {
                font-size: 0.8rem;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0F766E;
            --primary-dark: #0B5F59;
            --primary-light: rgba(15, 118, 110, 0.10);
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --dark: #1C1917;
            --light: #F5F5F4;
            --white: #FFFFFF;
            --text: #292524;
            --muted: #57534E;
            --weak: #A8A29E;
            --border: rgba(28, 25, 23, 0.08);
            --radius-card: 18px;
            --radius-img: 14px;
            --radius-btn: 999px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.14);
            --section-space: 96px;
            --section-space-mobile: 64px;
            --font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        /* ===== 基础 reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            background: var(--light);
            color: var(--text);
            line-height: 1.8;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 800;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 0.5em;
        }
        p {
            margin-bottom: 1.5em;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease, background 0.25s ease, opacity 0.25s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .form-control:focus {
            outline: 3px solid rgba(15, 118, 110, 0.25);
            outline-offset: 2px;
            box-shadow: none !important;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul {
            padding-left: 0;
            list-style: none;
            margin-bottom: 0;
        }
        .container {
            max-width: 1200px;
        }

        /* ===== 按钮体系 ===== */
        .btn-brand {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 32px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid transparent;
            transition: all 0.3s ease;
            gap: 8px;
            line-height: 1.4;
        }
        .btn-brand.btn-solid {
            background: var(--primary);
            color: var(--white);
            border-color: var(--primary);
        }
        .btn-brand.btn-solid:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-brand.btn-solid:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .btn-brand.btn-accent {
            background: var(--accent);
            color: #1C1917;
            border-color: var(--accent);
        }
        .btn-brand.btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #1C1917;
            transform: translateY(-2px);
            box-shadow: 0 12px 25px rgba(245, 158, 11, 0.3);
        }
        .btn-brand.btn-accent:active {
            transform: translateY(1px);
        }
        .btn-brand.btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-brand.btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-brand.btn-outline.btn-outline-white {
            color: var(--white);
            border-color: rgba(255, 255, 255, 0.7);
        }
        .btn-brand.btn-outline.btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--white);
            color: var(--white);
        }

        /* ===== 导航 ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.6);
            padding: 0;
            transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
        }
        .navbar.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border-bottom-color: var(--border);
        }
        .navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text);
            padding: 14px 0;
            line-height: 1.2;
        }
        .navbar .navbar-brand svg {
            width: 38px;
            height: 38px;
            flex-shrink: 0;
        }
        .navbar .navbar-nav {
            margin-left: auto;
            gap: 4px;
        }
        .navbar .nav-link {
            font-weight: 600;
            color: var(--text);
            padding: 10px 18px;
            border-radius: 8px;
            position: relative;
            transition: color 0.25s ease, background 0.25s ease;
            font-size: 0.98rem;
        }
        .navbar .nav-link:hover {
            color: var(--primary);
            background: rgba(15, 118, 110, 0.06);
        }
        .navbar .nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }
        .navbar .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: 18px;
        }
        .nav-search-box {
            width: 0;
            overflow: hidden;
            opacity: 0;
            transition: width 0.35s ease, opacity 0.3s ease;
        }
        .nav-search-box.open {
            width: 200px;
            opacity: 1;
        }
        .nav-search-box .form-control {
            border-radius: 999px;
            border: 1px solid var(--border);
            padding: 8px 18px;
            font-size: 0.9rem;
        }
        .nav-search-toggle {
            background: none;
            border: none;
            font-size: 1rem;
            color: var(--text);
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.25s, color 0.25s;
            cursor: pointer;
        }
        .nav-search-toggle:hover {
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
        }
        .btn-nav-cta {
            background: var(--primary);
            color: var(--white) !important;
            padding: 9px 24px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.92rem;
            transition: background 0.3s, transform 0.2s;
            white-space: nowrap;
        }
        .btn-nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .navbar .navbar-toggler {
            border: none;
            padding: 8px 10px;
            font-size: 1.4rem;
            color: var(--text);
        }
        .navbar .navbar-toggler:focus {
            box-shadow: none;
        }
        .navbar-toggler-icon {
            background-image: none;
        }

        /* ===== 分类横幅 ===== */
        .category-hero {
            position: relative;
            min-height: 45vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center center/cover no-repeat;
            padding: 120px 0 80px;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(28, 25, 23, 0.75) 0%, rgba(28, 25, 23, 0.45) 60%, rgba(28, 25, 23, 0.3) 100%);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 16px;
        }
        .category-hero .hero-lead {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 26px;
        }
        .category-hero .hero-btn-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== 图文交替区 ===== */
        .alt-block {
            padding: var(--section-space) 0;
        }
        .alt-block.bg-white {
            background: var(--white);
        }
        .alt-block .alt-img-wrap {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .alt-block .alt-img-wrap img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .alt-block .alt-img-wrap:hover img {
            transform: scale(1.03);
        }
        .alt-block .alt-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 118, 110, 0.15), transparent 40%);
        }
        .alt-block .alt-content h2 {
            font-size: 2rem;
            margin-bottom: 20px;
        }
        .alt-block .alt-content p {
            color: var(--muted);
            font-size: 1.02rem;
            line-height: 1.85;
        }
        .alt-block .alt-content .btn-brand {
            margin-top: 10px;
        }
        .alt-block .alt-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        /* ===== 统计数字条 ===== */
        .stats-band {
            background: var(--white);
            padding: 40px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .stats-band .stat-item {
            text-align: center;
            padding: 20px 10px;
        }
        .stats-band .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stats-band .stat-num .suffix {
            font-size: 1.2rem;
            font-weight: 700;
            margin-left: 2px;
        }
        .stats-band .stat-label {
            color: var(--muted);
            font-size: 0.92rem;
        }
        .stats-band .divider {
            width: 1px;
            background: var(--border);
            height: 48px;
        }

        /* ===== 服务优势卡片 ===== */
        .features-grid {
            padding: var(--section-space) 0;
            background: var(--white);
        }
        .features-grid .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .features-grid .section-head h2 {
            font-size: 2.1rem;
            margin-bottom: 16px;
        }
        .features-grid .section-head p {
            color: var(--muted);
            max-width: 640px;
            margin: 0 auto;
        }
        .feature-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 30px 26px;
            height: 100%;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            opacity: 0;
            transition: opacity 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 118, 110, 0.3);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            color: var(--primary);
            transition: all 0.3s ease;
        }
        .feature-card .feature-icon svg {
            width: 24px;
            height: 24px;
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: var(--white);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--muted);
            font-size: 0.95rem;
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ===== 相关主题卡片 ===== */
        .topic-section {
            padding: var(--section-space) 0;
            background: var(--light);
        }
        .topic-section .section-head {
            text-align: center;
            margin-bottom: 44px;
        }
        .topic-section .section-head h2 {
            font-size: 2.1rem;
            margin-bottom: 12px;
        }
        .topic-card {
            background: var(--white);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.35s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 118, 110, 0.25);
        }
        .topic-card .topic-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }
        .topic-card .topic-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .topic-card:hover .topic-thumb img {
            transform: scale(1.05);
        }
        .topic-card .topic-body {
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .topic-card .topic-body h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .topic-card .topic-body h3 a {
            color: var(--text);
        }
        .topic-card .topic-body h3 a:hover {
            color: var(--primary);
        }
        .topic-card .topic-body p {
            color: var(--muted);
            font-size: 0.92rem;
            margin-bottom: 16px;
            flex: 1;
        }
        .topic-card .topic-link {
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .topic-card .topic-link i {
            transition: transform 0.25s;
        }
        .topic-card .topic-link:hover i {
            transform: translateX(4px);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--section-space) 0;
            background: var(--white);
        }
        .faq-left {
            position: sticky;
            top: 100px;
        }
        .faq-left h2 {
            font-size: 2.1rem;
            margin-bottom: 16px;
        }
        .faq-left p {
            color: var(--muted);
            margin-bottom: 20px;
        }
        .faq-left .faq-contact {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--light);
            border-radius: var(--radius-card);
            padding: 18px 22px;
            border: 1px solid var(--border);
        }
        .faq-left .faq-contact .icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--primary);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }
        .faq-left .faq-contact .text {
            color: var(--text);
            font-weight: 600;
            font-size: 0.95rem;
        }
        .accordion-faq .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border);
            background: transparent;
        }
        .accordion-faq .accordion-item:first-child {
            border-top: 1px solid var(--border);
        }
        .accordion-faq .accordion-button {
            background: transparent;
            padding: 20px 16px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text);
            box-shadow: none;
            border: none;
            position: relative;
            padding-left: 24px;
            transition: color 0.25s;
        }
        .accordion-faq .accordion-button::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%) scaleY(0);
            width: 3px;
            height: 22px;
            background: var(--primary);
            border-radius: 3px;
            transition: transform 0.25s;
        }
        .accordion-faq .accordion-button:not(.collapsed)::before {
            transform: translateY(-50%) scaleY(1);
        }
        .accordion-faq .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
        }
        .accordion-faq .accordion-button::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            background: none;
            width: auto;
            height: auto;
            transform: none;
            font-size: 0.9rem;
            color: var(--muted);
            transition: transform 0.3s ease, color 0.3s;
        }
        .accordion-faq .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .accordion-faq .accordion-button:focus {
            box-shadow: none;
            outline: none;
        }
        .accordion-faq .accordion-body {
            padding: 0 24px 20px;
            color: var(--muted);
            line-height: 1.8;
            font-size: 0.98rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background: url('/assets/images/backpic/back-3.png') center center/cover no-repeat;
            background-color: var(--dark);
            text-align: center;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(28, 25, 23, 0.82);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: var(--white);
            font-size: 2.2rem;
            margin-bottom: 18px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 540px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding-top: 64px;
        }
        .footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 14px;
        }
        .footer .footer-brand svg {
            width: 36px;
            height: 36px;
        }
        .footer .footer-desc {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 18px;
            max-width: 320px;
        }
        .footer .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            transition: all 0.3s;
        }
        .footer .footer-social a:hover {
            background: var(--primary);
            color: var(--white);
            transform: translateY(-3px);
        }
        .footer h5 {
            color: var(--white);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            transition: color 0.25s;
        }
        .footer ul li a:hover {
            color: var(--accent);
        }
        .footer .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
        }
        .footer .footer-contact i {
            color: var(--primary);
            width: 18px;
            text-align: center;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 48px;
            text-align: center;
        }
        .footer .footer-bottom p {
            margin: 0;
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.85rem;
        }

        /* ===== 浮动 CTA ===== */
        .float-cta {
            position: fixed;
            bottom: 32px;
            right: 32px;
            z-index: 1050;
            background: var(--accent);
            color: #1C1917;
            border: none;
            border-radius: 999px;
            padding: 14px 26px;
            font-weight: 700;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 12px 30px rgba(245, 158, 11, 0.35);
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.45s ease;
            cursor: pointer;
        }
        .float-cta.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .float-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 18px 40px rgba(245, 158, 11, 0.4);
        }
        @media (max-width: 576px) {
            .float-cta {
                width: 56px;
                height: 56px;
                padding: 0;
                border-radius: 50%;
                justify-content: center;
                bottom: 24px;
                right: 24px;
            }
            .float-cta span {
                display: none;
            }
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            :root {
                --section-space: 72px;
            }
            .navbar .navbar-nav {
                margin-left: 0;
                padding-top: 12px;
            }
            .navbar .nav-link {
                padding: 12px 12px;
                font-size: 1rem;
            }
            .nav-cta-wrap {
                margin-left: 0;
                padding: 12px 0 16px;
                flex-wrap: wrap;
            }
            .nav-search-box.open {
                width: 100%;
            }
            .navbar-collapse {
                background: var(--white);
                border-radius: 16px;
                padding: 16px 20px;
                box-shadow: var(--shadow-md);
                margin-top: 8px;
            }
            .category-hero h1 {
                font-size: 2.4rem;
            }
            .alt-block .alt-img-wrap img {
                height: 260px;
            }
            .faq-left {
                position: static;
                margin-bottom: 32px;
            }
            .stats-band .divider {
                display: none;
            }
        }
        @media (max-width: 767.98px) {
            .category-hero {
                min-height: auto;
                padding: 100px 0 60px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero .hero-lead {
                font-size: 1rem;
            }
            .stats-band .stat-num {
                font-size: 1.8rem;
            }
            .features-grid .section-head h2 {
                font-size: 1.6rem;
            }
            .alt-block .alt-content h2 {
                font-size: 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 575.98px) {
            .category-hero .hero-btn-group {
                flex-direction: column;
                width: 100%;
            }
            .category-hero .hero-btn-group .btn-brand {
                width: 100%;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .topic-card .topic-body {
                padding: 18px;
            }
            .footer h5 {
                margin-top: 18px;
            }
        }