/* roulang page: index */
:root {
            --primary: #0F766E;
            --primary-dark: #115E59;
            --primary-light: rgba(15, 118, 110, 0.10);
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --violet: #8B5CF6;
            --bg: #F7F6F2;
            --card-bg: #FFFFFF;
            --text: #1C1A17;
            --muted: #6B7280;
            --border: #E5E2DB;
            --radius-lg: 1.25rem;
            --radius-md: 0.875rem;
            --radius-sm: 0.75rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
            --gradient-brand: linear-gradient(135deg, #0F766E 0%, #115E59 40%, #8B5CF6 100%);
            --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 1rem;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea,
        select {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        .section {
            padding: 6rem 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 4.5rem 0;
            }
        }
        @media (max-width: 640px) {
            .section {
                padding: 3rem 0;
            }
        }
        .section-head {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 3rem;
        }
        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 0.375rem 1rem;
            border-radius: 30px;
            font-size: 0.875rem;
            font-weight: 600;
        }
        .section-head h2 {
            font-size: clamp(1.75rem, 3vw, 2.375rem);
            line-height: 1.25;
            color: var(--text);
            margin: 1rem 0 0.75rem;
            font-weight: 700;
        }
        .section-head p {
            color: var(--muted);
            font-size: 1rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.875rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 999px;
            transition: all 0.25s ease;
            cursor: pointer;
            border: none;
            line-height: 1.4;
        }
        .btn:hover {
            transform: translateY(-2px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-sm {
            padding: 0.625rem 1.5rem;
            font-size: 0.9375rem;
        }
        .btn-large {
            padding: 1rem 2.5rem;
            font-size: 1.0625rem;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
        }
        .btn-accent {
            background: var(--gradient-accent);
            color: #fff;
        }
        .btn-accent:hover {
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .topbar {
            background: var(--text);
            color: #fff;
            font-size: 0.875rem;
            height: 40px;
            display: flex;
            align-items: center;
        }
        .topbar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }
        .topbar-left {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .topbar-right {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }
        .topbar-item {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
        }
        .topbar-btn {
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            padding: 0.25rem 1rem;
            border-radius: 20px;
            font-size: 0.875rem;
            display: inline-flex;
            align-items: center;
        }
        .topbar-btn:hover {
            background: #f0fdfa;
        }
        @media (max-width: 768px) {
            .hide-mobile {
                display: none !important;
            }
            .topbar-item {
                font-size: 0.8125rem;
            }
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.05);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-brand);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
        }
        .logo-text {
            font-size: 1.375rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.02em;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-link {
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-weight: 500;
            color: var(--text);
            position: relative;
            transition: color 0.2s ease, background 0.2s ease;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta {
            margin-left: 0.75rem;
        }
        .nav-toggle {
            display: none;
            font-size: 1.25rem;
            color: var(--text);
            padding: 0.5rem;
            border-radius: 8px;
            background: transparent;
        }
        .nav-toggle:hover {
            background: var(--primary-light);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 1rem 16px 1.5rem;
                gap: 0.25rem;
                box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
                border-bottom-left-radius: 1rem;
                border-bottom-right-radius: 1rem;
            }
            .main-nav.nav-open {
                display: flex;
            }
            .nav-link {
                padding: 0.875rem 1rem;
                width: 100%;
                border-radius: 10px;
            }
            .nav-link.active::after {
                bottom: 8px;
                left: 1rem;
                right: auto;
                width: 2px;
                height: 16px;
            }
            .nav-cta {
                margin: 0.75rem 0 0;
                text-align: center;
            }
        }
        .hero {
            position: relative;
            background: var(--gradient-brand);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.16;
            z-index: 1;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 118, 110, 0.9) 0%, rgba(17, 94, 89, 0.75) 45%, rgba(139, 92, 246, 0.35) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 5rem 0;
        }
        .hero-eyebrow {
            display: inline-block;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.875rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 0.375rem 1rem;
            border-radius: 30px;
            margin-bottom: 1.25rem;
        }
        .hero h1 {
            font-size: clamp(2.25rem, 5vw, 3.5rem);
            line-height: 1.15;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1.25rem;
        }
        .hero-subtitle {
            font-size: 1.125rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.75;
            max-width: 580px;
            margin-bottom: 2rem;
        }
        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 2.5rem;
        }
        .hero-badges {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .hero-badge {
            background: rgba(255, 255, 255, 0.14);
            backdrop-filter: blur(6px);
            border-radius: 1rem;
            padding: 0.875rem 1.375rem;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hero-badge strong {
            display: block;
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-badge span {
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.8);
        }
        .hero-visual img {
            border-radius: 1.5rem;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }
        @media (max-width: 1024px) {
            .hero-content {
                padding: 4rem 0;
            }
            .hero .grid-x {
                justify-content: center;
            }
            .hero .hero-visual {
                display: none;
            }
            .hero-actions,
            .hero-badges {
                justify-content: center;
            }
            .hero-subtitle {
                margin-left: auto;
                margin-right: auto;
                text-align: center;
            }
            .hero h1 {
                text-align: center;
            }
            .hero-eyebrow {
                text-align: center;
                display: inline-block;
            }
            .hero .large-7 {
                flex: 0 0 100%;
                max-width: 100%;
                text-align: center;
            }
        }
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .pain-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .pain-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 1rem;
        }
        .pain-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .pain-card p {
            color: var(--muted);
            font-size: 0.9375rem;
        }
        @media (max-width: 1024px) {
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .pain-grid {
                grid-template-columns: 1fr;
            }
        }
        .solutions {
            background: #ffffff;
        }
        .solution-block {
            margin-bottom: 4rem;
        }
        .solution-block:last-child {
            margin-bottom: 0;
        }
        .solution-media img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-hover);
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }
        .solution-eyebrow {
            display: inline-block;
            color: var(--primary);
            background: var(--primary-light);
            padding: 0.375rem 1rem;
            border-radius: 30px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .solution-text h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .solution-text p {
            color: var(--muted);
            margin-bottom: 1.25rem;
        }
        .solution-text ul {
            margin-bottom: 1.5rem;
        }
        .solution-text ul li {
            position: relative;
            padding-left: 1.75rem;
            margin-bottom: 0.5rem;
            color: var(--text);
        }
        .solution-text ul li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--primary);
            position: absolute;
            left: 0;
            top: 0;
        }
        @media (max-width: 768px) {
            .solution-block .solution-media,
            .solution-block .solution-text {
                order: inherit !important;
                flex: 0 0 100%;
                max-width: 100%;
            }
            .solution-text h3 {
                font-size: 1.5rem;
            }
        }
        .stats {
            background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        .stat-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 2.5rem 1.5rem;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--gradient-accent);
        }
        .stat-card strong {
            display: inline-block;
            font-size: clamp(2.25rem, 3vw, 3rem);
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        .stat-card span {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            margin-left: 0.25rem;
        }
        .stat-card p {
            color: var(--muted);
            margin-top: 0.75rem;
            font-size: 0.9375rem;
        }
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
        }
        @media (max-width: 640px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        .testimonials {
            background: #ffffff;
        }
        .testimonial-layout {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 1.5rem;
        }
        .testimonial-main {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            position: relative;
        }
        .testimonial-main .testimonial-quote {
            font-size: 3.5rem;
            line-height: 1;
            color: var(--primary);
            opacity: 0.25;
            font-family: Georgia, serif;
            margin-bottom: -0.5rem;
        }
        .testimonial-main p {
            font-size: 1.0625rem;
            line-height: 1.75;
            color: var(--text);
            margin-bottom: 1.5rem;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .avatar-lg {
            width: 56px;
            height: 56px;
            font-size: 1.25rem;
        }
        .testimonial-author strong {
            display: block;
            font-weight: 700;
            color: var(--text);
        }
        .testimonial-author span {
            color: var(--muted);
            font-size: 0.875rem;
        }
        .testimonial-side {
            display: grid;
            gap: 1.5rem;
        }
        .testimonial-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .testimonial-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .testimonial-card p {
            font-size: 0.9375rem;
            color: var(--text);
            margin-bottom: 1.25rem;
            line-height: 1.7;
        }
        .testimonial-card .avatar {
            width: 38px;
            height: 38px;
            font-size: 0.875rem;
        }
        .testimonial-card .testimonial-author {
            gap: 0.75rem;
        }
        .testimonial-card .testimonial-author strong {
            font-size: 0.9375rem;
        }
        .testimonial-card .testimonial-author span {
            font-size: 0.8125rem;
        }
        @media (max-width: 768px) {
            .testimonial-layout {
                grid-template-columns: 1fr;
            }
        }
        .news-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .news-item {
            display: block;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.75rem 2rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            margin-bottom: 1.25rem;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .news-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .news-item:hover h3 {
            color: var(--primary);
        }
        .news-cat {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8125rem;
            font-weight: 600;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            margin-bottom: 0.75rem;
        }
        .news-item h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            transition: color 0.2s ease;
            line-height: 1.4;
        }
        .news-item p {
            color: var(--muted);
            font-size: 0.9375rem;
            margin-bottom: 0.75rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--muted);
            font-size: 0.875rem;
        }
        .news-arrow {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8125rem;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .news-item:hover .news-arrow {
            background: var(--primary);
            color: #fff;
        }
        .empty-text {
            text-align: center;
            padding: 2rem;
            background: #fff;
            border-radius: var(--radius-lg);
            color: var(--muted);
            border: 1px dashed var(--border);
            font-size: 0.9375rem;
        }
        .faq {
            background: #ffffff;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            max-width: 960px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            border: 1px solid var(--border);
            transition: box-shadow 0.25s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-item h3 {
            font-size: 1.0625rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text);
        }
        .faq-item p {
            font-size: 0.9375rem;
            color: var(--muted);
            line-height: 1.7;
        }
        @media (max-width: 640px) {
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }
        .cta-section {
            background: var(--gradient-brand);
            padding: 5rem 0;
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(1.75rem, 3vw, 2.375rem);
            color: #fff;
            margin-bottom: 0.75rem;
            font-weight: 800;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.0625rem;
            margin-bottom: 2rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-actions {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 3.5rem 0;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }
        .site-footer {
            background: #111827;
            color: rgba(255, 255, 255, 0.75);
            padding-top: 4rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 3rem;
            padding-bottom: 3rem;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #fff;
            font-size: 1.375rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9375rem;
            line-height: 1.75;
        }
        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            padding: 0.375rem 0;
            font-size: 0.9375rem;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-contact p {
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0.5rem;
            font-size: 0.9375rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.5rem 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.875rem;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 0.5rem;
                text-align: center;
            }
        }

/* roulang page: article */
:root {
        --primary: #0F766E;
        --primary-dark: #115E59;
        --accent: #F59E0B;
        --accent-dark: #D97706;
        --purple: #8B5CF6;
        --bg: #F7F6F2;
        --card: #FFFFFF;
        --text: #1C1A17;
        --text-soft: #2A2825;
        --muted: #6B7280;
        --border: #E5E2DB;
        --radius-xl: 1.5rem;
        --radius-lg: 1.25rem;
        --radius-md: 1rem;
        --radius-sm: 0.75rem;
        --shadow-xs: 0 1px 2px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.06);
        --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
        --shadow-green: 0 2px 8px rgba(15,118,110,0.10);
        --grad-main: linear-gradient(135deg, #0F766E 0%, #8B5CF6 100%);
        --grad-accent: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
        --grad-soft: linear-gradient(135deg, #F0FDFA 0%, #F5F3FF 100%);
        --font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body { font-family: var(--font-family); color: var(--text); background: var(--bg); line-height: 1.75; font-size: 1rem; }
    img { max-width: 100%; height: auto; display: block; }
    a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
    button { font-family: inherit; border: none; cursor: pointer; background: none; }
    input, textarea { font-family: inherit; }
    ul, ol { list-style-position: inside; }
    h1, h2, h3, h4, h5 { line-height: 1.3; color: var(--text); }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

    /* ===== 按钮 ===== */
    .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; padding: 0.875rem 2rem; font-weight: 600; font-size: 1rem; line-height: 1.2; transition: all 0.25s ease; border: 1.5px solid transparent; text-align: center; }
    .btn-primary { background: var(--grad-accent); color: #fff; box-shadow: 0 4px 14px rgba(245, 158, 11, 0.25); }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35); filter: brightness(1.05); }
    .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25); }
    .btn-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
    .btn-outline:hover { background: rgba(15, 118, 110, 0.06); transform: translateY(-2px); }
    .btn-outline:active { background: rgba(15, 118, 110, 0.12); transform: translateY(0); }
    .btn-light { background: #fff; color: var(--primary); box-shadow: 0 2px 10px rgba(0,0,0,0.08); }
    .btn-light:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.12); }
    .btn-sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; }

    /* ===== 顶部信息条 ===== */
    .top-bar { background: #1C1A17; color: rgba(255,255,255,0.9); font-size: 0.8125rem; }
    .top-bar-inner { display: flex; align-items: center; justify-content: space-between; min-height: 40px; gap: 16px; }
    .top-bar-text { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .top-bar-actions { display: flex; align-items: center; gap: 20px; white-space: nowrap; }
    .top-bar-actions span { display: inline-flex; align-items: center; gap: 6px; }
    .top-bar-actions i { color: var(--accent); font-size: 0.75rem; }

    /* ===== 主导航 ===== */
    .site-header { position: sticky; top: 0; z-index: 999; background: rgba(255,255,255,0.96); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: 0 1px 8px rgba(0,0,0,0.06); border-bottom: 1px solid rgba(229,226,219,0.5); }
    .header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
    .logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.375rem; color: var(--primary); flex-shrink: 0; }
    .logo-icon { width: 36px; height: 36px; background: var(--grad-main); border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; color: #fff; font-size: 1rem; box-shadow: var(--shadow-green); }
    .logo-text { letter-spacing: 0.02em; }
    .main-nav { display: flex; align-items: center; gap: 1.75rem; flex: 1; justify-content: flex-end; }
    .nav-link { position: relative; font-weight: 500; font-size: 0.9375rem; color: var(--text); padding: 8px 2px; transition: color 0.25s ease; white-space: nowrap; }
    .nav-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--primary); border-radius: 2px; transition: width 0.3s ease; }
    .nav-link:hover { color: var(--primary); }
    .nav-link:hover::after { width: 100%; }
    .nav-link.active { color: var(--primary); }
    .nav-link.active::after { width: 100%; }
    .nav-cta { margin-left: 0.5rem; flex-shrink: 0; }
    .nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; background: rgba(15,118,110,0.08); color: var(--primary); font-size: 1.125rem; align-items: center; justify-content: center; transition: background 0.2s; }
    .nav-toggle:hover { background: rgba(15,118,110,0.15); }

    /* ===== 面包屑 ===== */
    .breadcrumb-wrap { background: var(--card); border-bottom: 1px solid var(--border); }
    .breadcrumb { display: flex; align-items: center; gap: 8px; padding: 16px 0; font-size: 0.875rem; color: var(--muted); flex-wrap: wrap; }
    .breadcrumb a { color: var(--primary); }
    .breadcrumb a:hover { color: var(--primary-dark); }
    .breadcrumb .sep { color: #B0AEA7; font-size: 0.75rem; }

    /* ===== 文章主区 ===== */
    .article-main { padding: 40px 0 80px; position: relative; background: var(--bg); }
    .article-main::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 280px; background: linear-gradient(180deg, rgba(15,118,110,0.05) 0%, transparent 100%); pointer-events: none; }
    .article-wrap { background: var(--card); border-radius: var(--radius-xl); box-shadow: var(--shadow-xs); padding: clamp(1.75rem, 4vw, 3.5rem); max-width: 920px; margin: 0 auto; position: relative; border: 1px solid rgba(229,226,219,0.5); }
    .article-header { text-align: center; padding-bottom: 2rem; margin-bottom: 2rem; border-bottom: 1px solid var(--border); }
    .article-category { display: inline-block; background: rgba(15, 118, 110, 0.1); color: var(--primary); padding: 5px 16px; border-radius: 999px; font-size: 0.8125rem; font-weight: 600; margin-bottom: 1.25rem; letter-spacing: 0.03em; }
    .article-header h1 { font-size: clamp(1.75rem, 3.2vw, 2.5rem); line-height: 1.3; font-weight: 800; margin: 0.5rem 0 0.75rem; word-break: break-word; }
    .article-meta { display: flex; justify-content: center; align-items: center; gap: 1.5rem; font-size: 0.875rem; color: var(--muted); flex-wrap: wrap; }
    .article-meta span { display: inline-flex; align-items: center; gap: 6px; }
    .article-meta i { color: var(--primary); font-size: 0.8125rem; }

    /* ===== 正文排版 ===== */
    .article-content { max-width: 780px; margin: 0 auto; font-size: 1.0625rem; line-height: 1.9; color: var(--text-soft); }
    .article-content > * + * { margin-top: 1.25rem; }
    .article-content h2 { font-size: 1.5rem; font-weight: 700; color: var(--text); margin-top: 2.75rem; line-height: 1.4; padding-bottom: 0.5rem; border-bottom: 2px solid rgba(15, 118, 110, 0.15); }
    .article-content h3 { font-size: 1.25rem; font-weight: 600; color: var(--text); margin-top: 2rem; }
    .article-content h4 { font-size: 1.125rem; font-weight: 600; color: var(--text); margin-top: 1.5rem; }
    .article-content p { margin-bottom: 1.375rem; }
    .article-content img { border-radius: var(--radius-lg); box-shadow: var(--shadow-xs); margin: 2rem auto; }
    .article-content img + em { display: block; text-align: center; font-size: 0.875rem; color: var(--muted); margin-top: -1.5rem; margin-bottom: 1.5rem; font-style: normal; }
    .article-content blockquote { border-left: 4px solid var(--primary); background: rgba(15, 118, 110, 0.06); padding: 1.25rem 1.5rem; margin: 2rem 0; border-radius: 0 var(--radius-md) var(--radius-md) 0; color: var(--text-soft); font-size: 0.9375rem; }
    .article-content blockquote p { margin-bottom: 0; }
    .article-content ul, .article-content ol { padding-left: 1.25rem; margin: 1.5rem 0; }
    .article-content li { margin-bottom: 0.5rem; }
    .article-content table { width: 100%; border-collapse: collapse; margin: 2rem 0; font-size: 0.9375rem; border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow-xs); }
    .article-content th { background: rgba(15, 118, 110, 0.08); color: var(--text); font-weight: 600; text-align: left; padding: 12px 16px; border-bottom: 2px solid rgba(15, 118, 110, 0.2); }
    .article-content td { padding: 12px 16px; border-bottom: 1px solid var(--border); }
    .article-content tr:last-child td { border-bottom: none; }
    .article-content pre { background: #1C1A17; color: #F8F8F2; padding: 1.5rem; border-radius: var(--radius-md); overflow-x: auto; font-size: 0.875rem; line-height: 1.7; margin: 2rem 0; }
    .article-content code { background: rgba(15, 118, 110, 0.08); color: var(--primary-dark); padding: 2px 6px; border-radius: 4px; font-size: 0.875em; }
    .article-content pre code { background: transparent; color: inherit; padding: 0; border-radius: 0; }
    .article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(15, 118, 110, 0.3); }
    .article-content a:hover { color: var(--primary-dark); text-decoration-color: var(--primary); }

    /* ===== 文章页脚标签 ===== */
    .article-footer { max-width: 780px; margin: 2.5rem auto 0; padding-top: 1.5rem; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
    .article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag { display: inline-block; background: rgba(15, 118, 110, 0.07); color: var(--primary-dark); font-size: 0.8125rem; padding: 4px 12px; border-radius: 999px; font-weight: 500; }
    .tag::before { content: '#'; margin-right: 2px; opacity: 0.6; }

    /* ===== 相关推荐 ===== */
    .related-section { max-width: 920px; margin: 48px auto 0; }
    .related-title { font-size: 1.375rem; font-weight: 700; text-align: center; margin-bottom: 28px; color: var(--text); display: flex; align-items: center; justify-content: center; gap: 12px; }
    .related-title::before, .related-title::after { content: ''; width: 32px; height: 2px; background: var(--grad-accent); border-radius: 2px; display: inline-block; }
    .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .related-card { background: var(--card); border-radius: var(--radius-lg); padding: 28px 24px; box-shadow: var(--shadow-xs); border: 1px solid rgba(229,226,219,0.5); transition: all 0.3s ease; display: flex; flex-direction: column; position: relative; overflow: hidden; }
    .related-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--grad-main); opacity: 0; transition: opacity 0.3s ease; }
    .related-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .related-card:hover::before { opacity: 1; }
    .related-icon { width: 48px; height: 48px; background: var(--grad-soft); border-radius: 14px; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 1.25rem; margin-bottom: 16px; }
    .related-card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 8px; color: var(--text); }
    .related-card p { font-size: 0.875rem; color: var(--muted); margin-bottom: 16px; flex: 1; }
    .related-link { color: var(--primary); font-size: 0.875rem; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
    .related-card:hover .related-link { gap: 10px; }
    .related-link i { transition: transform 0.2s ease; font-size: 0.8125rem; }
    .back-to-home { text-align: center; margin-top: 32px; }

    /* ===== 内容未找到 ===== */
    .not-found { max-width: 680px; margin: 60px auto; background: var(--card); border-radius: var(--radius-xl); box-shadow: var(--shadow-xs); padding: clamp(2.5rem, 6vw, 4rem); text-align: center; border: 1px solid rgba(229,226,219,0.5); }
    .not-found-icon { width: 72px; height: 72px; background: rgba(15, 118, 110, 0.08); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; color: var(--primary); font-size: 1.75rem; }
    .not-found h1 { font-size: 1.75rem; font-weight: 700; margin-bottom: 12px; }
    .not-found p { color: var(--muted); margin-bottom: 28px; }

    /* ===== CTA 区 ===== */
    .cta-section { background: var(--grad-main); position: relative; overflow: hidden; padding: 80px 0; margin-top: 80px; }
    .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat; opacity: 0.18; }
    .cta-section::after { content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: rgba(255,255,255,0.05); top: -100px; right: -80px; }
    .cta-inner { position: relative; z-index: 1; text-align: center; color: #fff; max-width: 720px; margin: 0 auto; }
    .cta-inner h2 { color: #fff; font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 800; margin-bottom: 16px; }
    .cta-inner p { color: rgba(255,255,255,0.85); font-size: 1.0625rem; margin-bottom: 32px; }
    .cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

    /* ===== 页脚 ===== */
    .site-footer { background: #1C1A17; color: rgba(255,255,255,0.7); padding: 64px 0 24px; position: relative; }
    .site-footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--grad-main); }
    .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
    .footer-logo { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 1.25rem; margin-bottom: 16px; }
    .footer-brand p { font-size: 0.875rem; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 300px; }
    .footer-links h4, .footer-contact h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 20px; }
    .footer-links a { display: block; color: rgba(255,255,255,0.65); font-size: 0.875rem; padding: 6px 0; transition: all 0.2s; }
    .footer-links a:hover { color: var(--accent); padding-left: 4px; }
    .footer-contact p { font-size: 0.875rem; padding: 5px 0; display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.6); }
    .footer-contact i { color: var(--accent); width: 16px; font-size: 0.8125rem; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.8125rem; color: rgba(255,255,255,0.4); }

    /* ===== 响应式 ===== */
    @media (max-width: 900px) {
        .main-nav { gap: 1.25rem; }
        .nav-link { font-size: 0.875rem; }
        .related-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto 32px; }
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    }
    @media (max-width: 768px) {
        .top-bar-actions span:nth-child(-n+2) { display: none; }
        .top-bar-actions { gap: 10px; }
        .main-nav { position: fixed; top: 72px; left: 0; right: 0; background: var(--card); flex-direction: column; align-items: stretch; padding: 16px 20px 24px; gap: 4px; box-shadow: 0 12px 24px rgba(0,0,0,0.12); transform: translateY(-120%); opacity: 0; pointer-events: none; transition: all 0.35s ease; border-radius: 0 0 16px 16px; z-index: 998; overflow-y: auto; max-height: calc(100vh - 72px); }
        .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
        .nav-link { display: block; padding: 12px 8px; font-size: 1rem; border-bottom: 1px solid var(--border); }
        .nav-link::after { display: none; }
        .nav-link.active { background: rgba(15, 118, 110, 0.06); border-radius: 8px; color: var(--primary); }
        .nav-cta { margin: 16px 0 0; }
        .nav-toggle { display: inline-flex; }
        .article-main { padding: 24px 0 60px; }
        .article-wrap { padding: 1.5rem; }
        .article-meta { gap: 1rem 1.5rem; }
        .cta-section { padding: 60px 0; margin-top: 60px; }
    }
    @media (max-width: 640px) {
        .container { padding: 0 16px; }
        .top-bar-text { display: none; }
        .top-bar-inner { justify-content: flex-end; }
        .header-inner { height: 64px; }
        .main-nav { top: 64px; }
        .logo-text { font-size: 1.125rem; }
        .article-header h1 { font-size: 1.375rem; }
        .article-content { font-size: 0.9375rem; }
        .article-content h2 { font-size: 1.25rem; }
        .article-content h3 { font-size: 1.125rem; }
        .article-footer { flex-direction: column; align-items: flex-start; }
        .cta-btns .btn { width: 100%; }
        .footer-grid { grid-template-columns: 1fr; gap: 28px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .related-title { font-size: 1.25rem; }
    }

/* roulang page: category1 */
:root {
            --primary: #0F766E;
            --primary-dark: #115E59;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --deco: #8B5CF6;
            --bg: #F7F6F2;
            --card: #FFFFFF;
            --text: #1C1A17;
            --muted: #6B7280;
            --border: #E5E2DB;
            --radius-lg: 1.5rem;
            --radius-md: 1rem;
            --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
            --transition: all .25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            color: var(--primary);
            font-size: 1.375rem;
            letter-spacing: -0.02em;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            box-shadow: 0 4px 10px rgba(15, 118, 110, 0.28);
        }

        .logo-text {
            line-height: 1;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            position: relative;
            font-weight: 500;
            color: var(--text);
            font-size: .9375rem;
            padding: .5rem 0;
        }

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

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: .25rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            font-weight: 600;
            text-decoration: none;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            padding: .875rem 2rem;
            font-size: .9375rem;
            line-height: 1.2;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #F97316);
            color: #fff;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.28);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
            color: #fff;
        }

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

        .btn-secondary {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }

        .btn-secondary:hover {
            background: rgba(15, 118, 110, 0.06);
            color: var(--primary);
        }

        .btn-sm {
            padding: .5rem 1.25rem;
            font-size: .875rem;
        }

        .nav-cta {
            margin-left: 12px;
        }

        /* Hero */
        .hero-solution {
            position: relative;
            min-height: 600px;
            display: flex;
            align-items: center;
            color: #fff;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(15, 118, 110, 0.95), rgba(139, 92, 246, 0.78)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
        }

        .hero-solution::after {
            content: '';
            position: absolute;
            width: 320px;
            height: 320px;
            right: -80px;
            top: -80px;
            border-radius: 50%;
            border: 40px solid rgba(255, 255, 255, 0.08);
        }

        .hero-solution .container {
            position: relative;
            z-index: 2;
            padding: 5rem 20px;
        }

        .hero-eyebrow {
            display: inline-block;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.28);
            border-radius: 999px;
            padding: .375rem 1rem;
            font-size: .8125rem;
            font-weight: 600;
            letter-spacing: .04em;
            margin-bottom: 1.5rem;
        }

        .hero-solution h1 {
            font-size: clamp(2.25rem, 5vw, 3.5rem);
            line-height: 1.15;
            font-weight: 800;
            color: #fff;
            margin: 0 0 1.25rem;
            max-width: 800px;
        }

        .hero-solution p.lead {
            font-size: 1.125rem;
            max-width: 700px;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.8;
            margin-bottom: 2rem;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .hero-badges {
            display: flex;
            gap: 1rem;
            margin-top: 3.25rem;
            flex-wrap: wrap;
        }

        .hero-badge {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.24);
            border-radius: var(--radius-md);
            padding: 1rem 1.5rem;
            min-width: 160px;
            backdrop-filter: blur(4px);
        }

        .hero-badge strong {
            font-size: 2rem;
            font-weight: 800;
            display: block;
            color: #fff;
            line-height: 1.2;
        }

        .hero-badge span {
            font-size: .8125rem;
            color: rgba(255, 255, 255, 0.82);
        }

        /* Section */
        .section {
            padding: 6rem 0;
        }

        .section-tinted {
            background: linear-gradient(180deg, var(--bg) 0%, #E9F5F2 100%);
        }

        .section-white {
            background: #fff;
        }

        .section-head {
            max-width: 760px;
            margin-bottom: 3rem;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-head .eyebrow {
            display: inline-block;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            border-radius: 999px;
            padding: .35rem 1rem;
            font-size: .8125rem;
            font-weight: 600;
            letter-spacing: .04em;
            margin-bottom: 1rem;
        }

        .section-head h2 {
            font-size: clamp(1.75rem, 3vw, 2.375rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text);
            margin: 0 0 1rem;
        }

        .section-head p {
            color: var(--muted);
            font-size: 1.0625rem;
            line-height: 1.8;
            margin: 0;
        }

        /* Pain / Value Cards */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .pain-card {
            background: var(--card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow);
            padding: 1.75rem;
            border-top: 3px solid var(--primary);
            transition: var(--transition);
        }

        .pain-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .pain-card .icon-wrap {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: rgba(15, 118, 110, 0.12);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 1.1rem;
        }

        .pain-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 .5rem;
        }

        .pain-card p {
            font-size: .9375rem;
            color: var(--muted);
            line-height: 1.7;
            margin: 0;
        }

        /* Case Cards */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .case-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .case-thumb {
            height: 220px;
            overflow: hidden;
            background: var(--border);
        }

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

        .case-card:hover .case-thumb img {
            transform: scale(1.04);
        }

        .case-body {
            padding: 1.75rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: .75rem;
        }

        .case-tag {
            display: inline-block;
            align-self: flex-start;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            border-radius: 999px;
            padding: .25rem .75rem;
            font-size: .75rem;
            font-weight: 600;
        }

        .case-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 0;
            line-height: 1.3;
        }

        .case-body p {
            color: var(--muted);
            font-size: .9375rem;
            line-height: 1.75;
            flex: 1;
            margin: 0;
        }

        .case-link {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            color: var(--primary);
            font-weight: 600;
            font-size: .875rem;
        }

        .case-link i {
            transition: transform .25s ease;
        }

        .case-link:hover i {
            transform: translateX(4px);
        }

        /* Module Cards */
        .module-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .module-card {
            background: linear-gradient(160deg, #fff 0%, #F0FAF8 100%);
            border: 1px solid #D9EFEC;
            border-radius: var(--radius-md);
            padding: 1.75rem;
            transition: var(--transition);
        }

        .module-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .module-card .mod-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            margin-bottom: 1.1rem;
        }

        .module-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 .5rem;
        }

        .module-card p {
            font-size: .875rem;
            color: var(--muted);
            line-height: 1.7;
            margin: 0;
        }

        /* Process */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }

        .process-step {
            position: relative;
            padding-top: .25rem;
        }

        .step-num {
            display: inline-flex;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: #FFF7E8;
            color: var(--accent-dark);
            border: 1px solid #FDE6B8;
            font-weight: 700;
            font-size: .9375rem;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
        }

        .process-step h3 {
            font-size: 1.125rem;
            font-weight: 700;
            margin: 0 0 .5rem;
        }

        .process-step p {
            font-size: .9375rem;
            color: var(--muted);
            line-height: 1.75;
            margin: 0;
        }

        /* Stats Band */
        .stats-band {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-radius: var(--radius-lg);
            padding: 3rem;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            box-shadow: 0 8px 24px rgba(15, 118, 110, 0.18);
        }

        .stat-item {
            text-align: center;
            border-right: 1px solid rgba(255, 255, 255, 0.15);
            padding: .5rem .5rem;
        }

        .stat-item:last-child {
            border-right: 0;
        }

        .stat-item strong {
            display: block;
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .stat-item span {
            display: block;
            margin-top: .25rem;
            font-size: .875rem;
            color: rgba(255, 255, 255, 0.82);
        }

        /* FAQ */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow);
            margin-bottom: 1rem;
            border: 1px solid var(--border);
            overflow: hidden;
        }

        .faq-title {
            width: 100%;
            text-align: left;
            padding: 1.25rem 1.5rem;
            background: none;
            border: none;
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }

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

        .faq-title i {
            transition: var(--transition);
            color: var(--muted);
            flex-shrink: 0;
        }

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

        .faq-item.open .faq-title i {
            transform: rotate(180deg);
        }

        .faq-body {
            display: none;
            padding: 0 1.5rem 1.25rem;
            color: var(--muted);
            line-height: 1.8;
            font-size: .9375rem;
        }

        .faq-body.open {
            display: block;
        }

        /* CTA */
        .cta-section {
            padding: 5rem 0 6rem;
        }

        .cta-band {
            background: linear-gradient(120deg, var(--primary), var(--deco));
            border-radius: var(--radius-lg);
            padding: 4rem 3rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(15, 118, 110, 0.16);
        }

        .cta-band::before {
            content: '';
            position: absolute;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            border: 42px solid rgba(255, 255, 255, 0.06);
            left: -70px;
            bottom: -120px;
        }

        .cta-band::after {
            content: '';
            position: absolute;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            border: 28px solid rgba(255, 255, 255, 0.05);
            right: -40px;
            top: -60px;
        }

        .cta-band h2 {
            font-size: clamp(1.75rem, 3vw, 2.375rem);
            color: #fff;
            line-height: 1.25;
            max-width: 760px;
            margin: 0 auto 1rem;
            position: relative;
            z-index: 2;
        }

        .cta-band p {
            color: rgba(255, 255, 255, 0.88);
            max-width: 620px;
            margin: 0 auto 2rem;
            line-height: 1.8;
            position: relative;
            z-index: 2;
        }

        .cta-actions {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: #1C1A17;
            color: rgba(255, 255, 255, 0.75);
            padding: 4rem 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1.2fr 1.4fr;
            gap: 3rem;
            padding-bottom: 3rem;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            text-decoration: none;
            margin-bottom: 1rem;
        }

        .footer-brand .logo-icon {
            background: var(--primary);
            color: #fff;
        }

        .footer-brand p {
            font-size: .9375rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.62);
            margin: 0;
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 1rem;
        }

        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            padding: .3rem 0;
            font-size: .9375rem;
        }

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

        .footer-contact p {
            font-size: .9375rem;
            margin-bottom: .5rem;
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.5rem 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: .75rem;
            color: rgba(255, 255, 255, 0.55);
            font-size: .875rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .pain-grid,
            .module-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 1rem 20px 1.5rem;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
            }

            .main-nav.nav-open {
                display: flex;
            }

            .nav-link {
                padding: .75rem 0;
                border-bottom: 1px solid var(--border);
                font-size: 1rem;
            }

            .nav-link.active::after {
                bottom: 0;
            }

            .nav-cta {
                margin: 1rem 0 0;
                justify-content: center;
            }

            .hero-solution {
                min-height: auto;
            }

            .hero-solution .container {
                padding: 4rem 20px;
            }

            .hero-badges {
                flex-direction: column;
            }

            .section {
                padding: 3.5rem 0;
            }

            .section-head {
                margin-bottom: 2rem;
            }

            .cta-band {
                padding: 3rem 1.5rem;
            }
        }

        @media (max-width: 640px) {
            .pain-grid,
            .case-grid,
            .module-grid,
            .process-grid,
            .stats-band,
            .footer-grid {
                grid-template-columns: 1fr;
            }

            .stat-item {
                border-right: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                padding-bottom: 1.5rem;
            }

            .stat-item:last-child {
                border-bottom: 0;
                padding-bottom: .5rem;
            }

            .hero-solution h1 {
                font-size: 2.125rem;
            }

            .hero-solution p.lead {
                font-size: 1rem;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .cta-actions .btn {
                width: 100%;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: .5rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0F766E;
            --primary-dark: #115E59;
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --accent-deep: #F97316;
            --decor: #8B5CF6;
            --bg: #F7F6F2;
            --card: #FFFFFF;
            --text: #1C1A17;
            --muted: #6B7280;
            --border: #E5E2DB;
            --radius-lg: 1.5rem;
            --radius-md: 0.875rem;
            --radius-sm: 0.75rem;
            --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
            --gradient-brand: linear-gradient(135deg, #0F766E 0%, #8B5CF6 100%);
            --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

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

        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            padding: 0.875rem 2rem;
            font-weight: 600;
            font-size: 0.9375rem;
            line-height: 1;
            border: 1.5px solid transparent;
            transition: all 0.28s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn svg,
        .btn i {
            font-size: 0.875rem;
        }

        .btn-primary {
            background: var(--gradient-accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.25);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #FBBF24 0%, #F97316 100%);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.32);
        }

        .btn-primary:active {
            transform: translateY(0px);
            box-shadow: 0 2px 8px rgba(245, 158, 11, 0.24);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(245, 158, 11, 0.45);
            outline-offset: 2px;
        }

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

        .btn-outline:hover {
            background: rgba(15, 118, 110, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            background: rgba(15, 118, 110, 0.12);
            transform: translateY(0);
        }

        .btn-outline:focus-visible {
            outline: 3px solid rgba(15, 118, 110, 0.28);
            outline-offset: 2px;
        }

        .btn-sm {
            padding: 0.625rem 1.25rem;
            font-size: 0.875rem;
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
        }

        .btn-white:hover {
            background: #F0FDFA;
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(15, 118, 110, 0.15);
        }

        /* ===== Topbar ===== */
        .topbar {
            background: #1C1A17;
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.8125rem;
            padding: 0;
            height: 40px;
            display: flex;
            align-items: center;
        }

        .topbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .topbar-left {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .topbar-left i {
            color: var(--accent);
            font-size: 0.8125rem;
        }

        .topbar-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .topbar-right span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .topbar-right i {
            color: var(--accent);
            font-size: 0.75rem;
        }

        .topbar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.18);
            margin: 0 2px;
        }

        @media (max-width: 640px) {
            .topbar-left {
                display: none;
            }
            .topbar-inner {
                justify-content: flex-end;
            }
            .topbar-right span:nth-of-type(odd),
            .topbar-divider {
                display: none;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(28, 26, 23, 0.04);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(28, 26, 23, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--gradient-brand);
            border-radius: 10px;
            color: #fff;
            font-size: 1rem;
        }

        .logo-text {
            font-size: 1.375rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.02em;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: auto;
        }

        .nav-link {
            position: relative;
            font-size: 0.9375rem;
            font-weight: 500;
            color: #374151;
            padding: 6px 2px;
            white-space: nowrap;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.28s ease;
        }

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

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }

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

        .nav-cta {
            margin-left: 8px;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg);
            color: var(--text);
            font-size: 1.125rem;
            align-items: center;
            justify-content: center;
            transition: background 0.25s ease;
        }

        .nav-toggle:hover {
            background: #ECE9E4;
        }

        .nav-toggle.active {
            background: var(--primary);
            color: #fff;
        }

        @media (max-width: 900px) {
            .main-nav {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 8px 20px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 30px rgba(0, 0, 0, 0.08);
                display: none;
                margin-left: 0;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                width: 100%;
                padding: 12px 0;
                border-bottom: 1px solid #F3F1EC;
                font-size: 0.9375rem;
            }

            .nav-cta {
                margin: 16px 0 0;
                width: 100%;
                text-align: center;
            }

            .nav-toggle {
                display: inline-flex;
            }
        }

        /* ===== Cat Hero ===== */
        .cat-hero {
            position: relative;
            padding: 6.5rem 0;
            background: var(--gradient-brand);
            color: #fff;
            overflow: hidden;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.26;
        }

        .cat-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 78% 30%, rgba(139, 92, 246, 0.45) 0%, transparent 55%);
        }

        .cat-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.24);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 0.8125rem;
            font-weight: 600;
            color: #F0FDFA;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }

        .hero-eyebrow i {
            color: var(--accent-light);
        }

        .cat-hero h1 {
            font-size: clamp(2.25rem, 5vw, 3.25rem);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 18px;
            max-width: 720px;
        }

        .cat-hero p {
            font-size: 1.0625rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
            max-width: 580px;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
        }

        .stat-badge {
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.20);
            backdrop-filter: blur(4px);
            border-radius: var(--radius-md);
            padding: 14px 22px;
            min-width: 132px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .stat-badge .stat-num {
            font-size: 1.75rem;
            font-weight: 800;
            color: #fff;
            line-height: 1;
        }

        .stat-badge .stat-unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent-light);
        }

        .stat-badge .stat-label {
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.76);
            margin-top: 2px;
            line-height: 1.2;
            border-left: 1px solid rgba(255, 255, 255, 0.18);
            padding-left: 12px;
            margin-left: 2px;
        }

        @media (max-width: 640px) {
            .cat-hero {
                padding: 4rem 0;
            }
            .cat-hero p {
                font-size: 1rem;
            }
            .hero-actions .btn {
                width: calc(50% - 7px);
            }
            .hero-stats {
                gap: 10px;
            }
            .stat-badge {
                padding: 12px 14px;
                min-width: 0;
                flex: 1 1 40%;
                flex-wrap: wrap;
                gap: 4px 10px;
            }
            .stat-badge .stat-label {
                border-left: none;
                padding-left: 0;
                margin-left: 0;
                width: 100%;
            }
        }

        /* ===== Cat Body Layout ===== */
        .cat-body {
            padding: 5rem 0;
        }

        .cat-aside {
            position: sticky;
            top: 96px;
            align-self: flex-start;
        }

        .anchor-nav {
            background: transparent;
            border-radius: var(--radius-md);
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .anchor-title {
            font-size: 0.8125rem;
            color: var(--muted);
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            padding: 0 8px 10px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 12px;
        }

        .anchor-link {
            position: relative;
            display: block;
            padding: 10px 14px;
            font-size: 0.9375rem;
            font-weight: 500;
            color: #4B5563;
            border-radius: var(--radius-sm);
            border-left: 3px solid transparent;
            transition: all 0.25s ease;
        }

        .anchor-link:hover {
            color: var(--primary);
            background: rgba(15, 118, 110, 0.05);
            border-left-color: var(--primary);
        }

        .anchor-link.active {
            color: var(--primary);
            background: rgba(15, 118, 110, 0.08);
            border-left-color: var(--primary);
            font-weight: 600;
        }

        .anchor-link.cta-link {
            margin-top: 14px;
            background: var(--gradient-accent);
            color: #fff;
            border-left: none;
            border-radius: 999px;
            text-align: center;
            padding: 12px 18px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.24);
        }

        .anchor-link.cta-link:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.32);
            color: #fff;
        }

        .cat-main {
            min-width: 0;
        }

        .cat-section {
            margin-bottom: 4.5rem;
            scroll-margin-top: 120px;
        }

        .cat-section:last-child {
            margin-bottom: 0;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(15, 118, 110, 0.10);
            color: var(--primary);
            font-size: 0.8125rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: 0.02em;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: clamp(1.6rem, 2.8vw, 2.125rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 14px;
        }

        .section-desc {
            color: var(--muted);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 640px;
        }

        /* Overview */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .overview-text p {
            color: #4B5563;
            font-size: 0.975rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .overview-text p:last-child {
            margin-bottom: 0;
        }

        .overview-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            aspect-ratio: 4/3;
        }

        .overview-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .overview-media::after {
            content: '';
            position: absolute;
            inset: 0;
            border: 1px solid rgba(15, 118, 110, 0.10);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }

        @media (max-width: 900px) {
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .overview-media {
                order: -1;
            }
        }

        /* Service Cards */
        .service-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--card);
            border: 1px solid rgba(229, 226, 219, 0.7);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .service-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(15, 118, 110, 0.22);
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--gradient-brand);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: rgba(15, 118, 110, 0.10);
            color: var(--primary);
            font-size: 1.25rem;
            margin-bottom: 20px;
        }

        .service-card:nth-child(2n) .service-icon {
            background: rgba(245, 158, 11, 0.12);
            color: #D97706;
        }

        .service-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.75;
            margin-bottom: 0;
        }

        @media (max-width: 640px) {
            .service-cards {
                grid-template-columns: 1fr;
            }
        }

        /* Architecture */
        .arch-box {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(229, 226, 219, 0.5);
        }

        .arch-stack {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 24px;
        }

        .arch-layer {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 18px 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            background: #FAFAF8;
            transition: all 0.3s ease;
        }

        .arch-layer:hover {
            background: #F0FDFA;
            border-color: rgba(15, 118, 110, 0.25);
            transform: translateX(6px);
        }

        .arch-layer:nth-child(2) {
            margin-left: 20px;
        }

        .arch-layer:nth-child(3) {
            margin-left: 40px;
        }

        .arch-layer:nth-child(4) {
            margin-left: 60px;
        }

        .arch-num {
            font-size: 0.8125rem;
            font-weight: 800;
            color: var(--primary);
            background: rgba(15, 118, 110, 0.08);
            border-radius: 8px;
            padding: 4px 10px;
            letter-spacing: 0.04em;
            flex-shrink: 0;
        }

        .arch-layer strong {
            font-size: 1.0625rem;
            font-weight: 700;
            color: var(--text);
            display: block;
            margin-bottom: 4px;
        }

        .arch-layer p {
            font-size: 0.875rem;
            color: var(--muted);
            margin: 0;
            line-height: 1.6;
        }

        @media (max-width: 640px) {
            .arch-layer {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .arch-layer:nth-child(2) {
                margin-left: 10px;
            }
            .arch-layer:nth-child(3) {
                margin-left: 20px;
            }
            .arch-layer:nth-child(4) {
                margin-left: 30px;
            }
        }

        /* Data Stats */
        .data-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .data-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(229, 226, 219, 0.5);
        }

        .data-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 48px;
            height: 3px;
            background: var(--gradient-accent);
            border-radius: 3px 3px 0 0;
        }

        .data-number {
            font-size: clamp(2rem, 3vw, 2.5rem);
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }

        .data-number span {
            font-size: 1.25rem;
            color: var(--accent-deep);
            margin-left: 2px;
        }

        .data-label {
            font-size: 0.875rem;
            color: var(--muted);
            margin-top: 8px;
        }

        @media (max-width: 900px) {
            .data-stats {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 420px) {
            .data-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
        }

        /* Process */
        .process-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            margin-top: 24px;
            border-radius: var(--radius-lg);
            background: var(--card);
            padding: 32px 24px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(229, 226, 219, 0.5);
        }

        .process-step {
            flex: 1 1 180px;
            position: relative;
            padding: 18px 16px 12px;
            text-align: center;
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--gradient-brand);
            color: #fff;
            font-weight: 800;
            font-size: 0.9375rem;
            margin-bottom: 14px;
            box-shadow: 0 4px 10px rgba(15, 118, 110, 0.28);
        }

        .process-step strong {
            display: block;
            font-size: 0.9375rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 0.8125rem;
            color: var(--muted);
            line-height: 1.6;
            margin: 0;
        }

        .process-step:not(:last-child)::after {
            content: '';
            position: absolute;
            right: -6px;
            top: 46%;
            width: 12px;
            height: 12px;
            border-top: 2px solid var(--border);
            border-right: 2px solid var(--border);
            transform: rotate(45deg);
        }

        @media (max-width: 900px) {
            .process-step::after {
                display: none;
            }
            .process-list {
                flex-direction: column;
                gap: 16px;
            }
            .process-step {
                text-align: left;
                display: flex;
                align-items: flex-start;
                gap: 16px;
                padding: 12px 0;
                border-bottom: 1px solid #F3F1EC;
            }
            .process-step:last-child {
                border-bottom: none;
            }
            .step-num {
                margin-bottom: 0;
                flex-shrink: 0;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid rgba(229, 226, 219, 0.7);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
        }

        .faq-item summary {
            cursor: pointer;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.9625rem;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
            transition: background 0.25s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.8125rem;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item details[open] summary {
            border-bottom: 1px solid var(--border);
        }

        .faq-item summary:hover {
            background: rgba(15, 118, 110, 0.03);
        }

        .faq-item p {
            padding: 16px 22px 20px;
            font-size: 0.925rem;
            color: var(--muted);
            line-height: 1.8;
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 5rem 0;
            background: var(--gradient-brand);
            text-align: center;
            color: #fff;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: rgba(139, 92, 246, 0.30);
            border-radius: 50%;
            filter: blur(80px);
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: clamp(1.75rem, 3vw, 2.25rem);
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 1rem;
            max-width: 480px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 640px) {
            .cta-section {
                padding: 3.5rem 0;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1C1A17;
            color: rgba(255, 255, 255, 0.75);
            padding: 0;
            border-top: 4px solid var(--primary);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr 1.2fr;
            gap: 40px;
            padding: 56px 0 40px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            color: #fff;
            font-size: 1.25rem;
            font-weight: 700;
        }

        .footer-logo .logo-icon {
            background: var(--gradient-brand);
        }

        .footer-brand p {
            font-size: 0.875rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.60);
            margin: 0;
            max-width: 280px;
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 0.9375rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.875rem;
            margin-bottom: 12px;
            transition: color 0.25s ease, transform 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }

        .footer-contact p {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 10px;
            line-height: 1.7;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px 20px;
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.42);
        }

        @media (max-width: 900px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
                padding: 44px 0 32px;
            }
        }

        @media (max-width: 640px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 36px 0 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

        /* ===== Responsive General ===== */
        @media (max-width: 900px) {
            .cat-body {
                padding: 3.5rem 0;
            }
            .cat-aside {
                position: static;
                margin-bottom: 28px;
            }
            .anchor-nav {
                flex-direction: row;
                flex-wrap: nowrap;
                overflow-x: auto;
                gap: 8px;
                padding-bottom: 6px;
                -webkit-overflow-scrolling: touch;
            }
            .anchor-title {
                display: none;
            }
            .anchor-link {
                border-left: none;
                border-bottom: 2px solid transparent;
                border-radius: 6px;
                padding: 8px 14px;
                white-space: nowrap;
                flex-shrink: 0;
                font-size: 0.875rem;
            }
            .anchor-link.active {
                border-left: none;
                border-bottom-color: var(--primary);
                background: rgba(15, 118, 110, 0.06);
            }
            .anchor-link.cta-link {
                display: none;
            }
        }

        /* Section spacing tweak */
        .cat-section:first-child {
            margin-top: 0;
        }

        .cat-section .overview-media img {
            transition: transform 0.5s ease;
        }

        .cat-section .overview-media:hover img {
            transform: scale(1.03);
        }

/* roulang page: category3 */
:root {
            --primary: #0F766E;
            --primary-deep: #115E59;
            --accent: #F59E0B;
            --accent-deep: #D97706;
            --decor: #8B5CF6;
            --bg: #F7F6F2;
            --card: #FFFFFF;
            --text: #1C1A17;
            --muted: #6B7280;
            --line: #E5E2DB;
            --radius-lg: 1.25rem;
            --radius-sm: 0.875rem;
            --shadow-card: 0 1px 2px rgba(0,0,0,.04), 0 4px 12px rgba(0,0,0,.06);
            --shadow-hover: 0 8px 24px rgba(0,0,0,.10);
            --gradient-main: linear-gradient(135deg, #0F766E 0%, #8B5CF6 100%);
            --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
        }
        * {
            box-sizing: border-box;
        }
        html,
        body {
            margin: 0;
            padding: 0;
        }
        body {
            font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s, background .2s, transform .2s, box-shadow .2s;
        }
        a:hover {
            color: var(--primary-deep);
        }
        button {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部信息条 */
        .topbar {
            background: var(--text);
            color: rgba(255, 255, 255, .78);
            font-size: .85rem;
            padding: 8px 0;
        }
        .topbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .topbar-welcome {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .topbar-welcome i {
            color: var(--accent);
        }
        .topbar-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .topbar-actions a {
            color: rgba(255, 255, 255, .78);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .topbar-actions a:hover {
            color: #fff;
        }
        .topbar-cta {
            background: #fff;
            color: var(--primary) !important;
            padding: 4px 16px;
            border-radius: 999px;
            font-weight: 600;
            font-size: .82rem;
        }
        .topbar-cta:hover {
            background: var(--accent);
            color: #fff !important;
        }

        /* 主导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .94);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 1px 8px rgba(0, 0, 0, .04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--gradient-main);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: 0 2px 8px rgba(15, 118, 110, .25);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav .nav-link {
            padding: 8px 14px;
            border-radius: 8px;
            font-weight: 500;
            color: var(--text);
            position: relative;
            font-size: .95rem;
        }
        .main-nav .nav-link:hover {
            color: var(--primary);
            background: rgba(15, 118, 110, .06);
        }
        .main-nav .nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }
        .main-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: -4px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta {
            margin-left: 8px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }
        .nav-toggle:hover {
            background: rgba(0, 0, 0, .05);
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: transform .2s, box-shadow .2s, background .2s, color .2s;
            text-decoration: none;
            line-height: 1.2;
            font-size: 1rem;
        }
        .btn-primary {
            background: var(--gradient-accent);
            color: #fff;
            padding: .875rem 2rem;
            box-shadow: 0 4px 12px rgba(245, 158, 11, .25);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, .35);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(245, 158, 11, .25);
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            padding: .875rem 2rem;
        }
        .btn-outline:hover {
            background: rgba(15, 118, 110, .06);
            transform: translateY(-2px);
            color: var(--primary);
        }
        .btn-outline-light {
            background: rgba(255, 255, 255, .12);
            border: 1.5px solid rgba(255, 255, 255, .65);
            color: #fff;
            padding: .875rem 2rem;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .2);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: .5rem 1.1rem;
            font-size: .9rem;
        }

        /* Hero */
        .consult-hero {
            background:
                linear-gradient(100deg, rgba(12, 74, 70, .92) 0%, rgba(15, 118, 110, .82) 45%, rgba(139, 92, 246, .55) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            padding: 6.5rem 0;
            position: relative;
            overflow: hidden;
        }
        .consult-hero .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .3);
            color: #fff;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: .85rem;
            font-weight: 600;
            letter-spacing: .02em;
            margin-bottom: 20px;
        }
        .consult-hero h1 {
            font-size: clamp(2.25rem, 5vw, 3.5rem);
            line-height: 1.15;
            font-weight: 800;
            margin: 0 0 20px;
            color: #fff;
            max-width: 720px;
        }
        .consult-hero .lead {
            font-size: 1.125rem;
            max-width: 660px;
            color: rgba(255, 255, 255, .92);
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 44px;
        }
        .hero-metrics {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-metric {
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .22);
            border-radius: var(--radius-sm);
            padding: 14px 24px;
            backdrop-filter: blur(6px);
            min-width: 130px;
        }
        .hero-metric .num {
            font-size: 1.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
        }
        .hero-metric .label {
            font-size: .82rem;
            color: rgba(255, 255, 255, .8);
            margin-top: 2px;
        }

        /* 图文交替 */
        .feature-row {
            padding: 5.5rem 0;
        }
        .feature-row.alt {
            background: #fff;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .feature-grid {
            row-gap: 2rem;
            align-items: center;
        }
        .feature-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .feature-media img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            transition: transform .45s ease;
        }
        .feature-media:hover img {
            transform: scale(1.02);
        }
        .feature-content {
            padding: 1rem 0;
        }
        .feature-content .eyebrow {
            display: inline-block;
            background: rgba(15, 118, 110, .1);
            color: var(--primary);
            padding: 5px 14px;
            border-radius: 999px;
            font-size: .78rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: .03em;
        }
        .feature-content h3 {
            font-size: clamp(1.5rem, 2.5vw, 1.9rem);
            line-height: 1.25;
            margin: 0 0 16px;
            color: var(--text);
            font-weight: 800;
        }
        .feature-content p {
            color: var(--muted);
            margin-bottom: 20px;
            font-size: 1rem;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 28px;
        }
        .feature-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            margin-bottom: 10px;
            color: var(--text);
        }
        .feature-list li i {
            color: var(--primary);
            margin-top: 5px;
            font-size: .9rem;
        }
        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            border-bottom: 2px solid transparent;
            padding-bottom: 2px;
        }
        .feature-link:hover {
            border-bottom-color: var(--primary);
        }

        /* 数据徽章 */
        .metrics-band {
            background: var(--gradient-main);
            color: #fff;
            padding: 5rem 0;
        }
        .metrics-band .section-head {
            text-align: center;
            margin-bottom: 3rem;
        }
        .metrics-band .section-head h2 {
            color: #fff;
            margin-bottom: 8px;
        }
        .metrics-band .section-head p {
            color: rgba(255, 255, 255, .8);
            max-width: 560px;
            margin: 0 auto;
        }
        .metric-card {
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            text-align: center;
            transition: background .2s, transform .2s;
            height: 100%;
        }
        .metric-card:hover {
            background: rgba(255, 255, 255, .18);
            transform: translateY(-4px);
        }
        .metric-num {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.1;
            color: #fff;
        }
        .metric-unit {
            font-size: 1.1rem;
            font-weight: 600;
            margin-left: 2px;
            color: var(--accent);
        }
        .metric-label {
            color: rgba(255, 255, 255, .8);
            font-size: .875rem;
            margin-top: 8px;
        }

        /* FAQ */
        .faq-section {
            padding: 5.5rem 0;
        }
        .faq-section .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 3rem;
        }
        .faq-section .section-head h2 {
            margin-bottom: 10px;
        }
        .faq-section .section-head p {
            color: var(--muted);
        }
        .faq-grid {
            row-gap: 1.5rem;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 26px 28px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .2s, transform .2s;
            height: 100%;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .faq-item h3 {
            font-size: 1.05rem;
            margin: 0 0 10px;
            display: flex;
            gap: 10px;
            align-items: center;
            color: var(--text);
            font-weight: 700;
            line-height: 1.4;
        }
        .faq-item h3 i {
            color: var(--accent);
            font-size: .95rem;
            flex-shrink: 0;
        }
        .faq-item p {
            margin: 0;
            color: var(--muted);
            font-size: .95rem;
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            background: var(--gradient-main);
            color: #fff;
            padding: 5rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, .08);
            border-radius: 50%;
        }
        .cta-inner {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        .cta-inner h2 {
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, .85);
            margin-bottom: 32px;
            font-size: 1.05rem;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-contact {
            margin-top: 20px;
            font-size: .95rem;
            color: rgba(255, 255, 255, .8);
        }
        .cta-contact a {
            color: #fff;
            font-weight: 700;
            border-bottom: 1px solid rgba(255, 255, 255, .5);
        }

        /* 页脚 */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255, 255, 255, .72);
            padding: 4rem 0 0;
        }
        .site-footer a {
            color: rgba(255, 255, 255, .72);
            transition: color .2s;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
        }
        .footer-grid>div {
            flex: 1;
            min-width: 190px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
        }
        .footer-brand p {
            margin-top: 16px;
            font-size: .9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: .92rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: .03em;
        }
        .footer-links a {
            display: block;
            padding: 5px 0;
            font-size: .9rem;
        }
        .footer-contact p {
            margin: 5px 0;
            font-size: .9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact p i {
            color: var(--accent);
            width: 16px;
            text-align: center;
            font-size: .85rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .14);
            padding: 18px 0;
            font-size: .84rem;
            margin-top: 3rem;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            color: rgba(255, 255, 255, .55);
        }

        /* 通用标题 */
        .section-head h2 {
            font-size: clamp(1.75rem, 3vw, 2.375rem);
            line-height: 1.25;
            font-weight: 800;
            color: var(--text);
            margin: 0 0 10px;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .topbar-welcome {
                display: none;
            }
            .topbar-actions {
                justify-content: flex-end;
                flex: 1;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px 20px;
                box-shadow: 0 12px 28px rgba(0, 0, 0, .08);
                display: none;
                border-bottom: 1px solid var(--line);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav .nav-link {
                padding: 12px 6px;
                border-bottom: 1px solid var(--line);
                font-size: 1rem;
            }
            .main-nav .nav-cta {
                margin-top: 12px;
                text-align: center;
                justify-content: center;
            }
            .main-nav .nav-link.active::after {
                display: none;
            }
            .consult-hero {
                padding: 4.5rem 0;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .feature-row {
                padding: 3.5rem 0;
            }
            .feature-grid {
                row-gap: 1.2rem;
            }
            .feature-content {
                padding: .5rem 0 0;
            }
            .metrics-band {
                padding: 3.5rem 0;
            }
            .faq-section {
                padding: 3.5rem 0;
            }
            .cta-section {
                padding: 3.5rem 0;
            }
            .footer-grid {
                gap: 2rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 640px) {
            .topbar-actions a:nth-child(2) {
                display: none;
            }
            .hero-metrics {
                flex-direction: column;
                gap: 10px;
            }
            .hero-metric {
                min-width: 0;
            }
            .metric-num {
                font-size: 2.2rem;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }