/* roulang page: index */
:root {
            --primary: #0e3b3c;
            --accent: #ff6b35;
            --bg: #f6f5f2;
            --text-main: #1a1f1e;
            --text-sub: #6b7575;
            --border: #e2e6e4;
            --white: #f2f5f4;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-sm: 0 1px 3px rgba(14, 59, 60, 0.06);
            --shadow-lg: 6px 6px 0 rgba(14, 59, 60, 0.08);
            --shadow-hover: 8px 8px 0 rgba(14, 59, 60, 0.12);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: 96px 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 72px 0;
            }
        }
        @media (max-width: 520px) {
            .section {
                padding: 48px 0;
            }
        }
        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(14, 59, 60, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background .3s ease, box-shadow .3s ease;
        }
        .site-header.scrolled {
            background: rgba(14, 59, 60, 0.97);
            box-shadow: 0 4px 20px rgba(14, 59, 60, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: var(--accent);
            color: #fff;
            border-radius: 10px;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.04em;
            box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.15);
        }
        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .brand-name {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: -0.02em;
        }
        .brand-domain {
            color: rgba(255, 255, 255, 0.6);
            font-size: 11px;
            letter-spacing: 0.02em;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            padding: 8px 2px;
            transition: color .25s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width .3s ease;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-link.active {
            color: #fff;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: all .3s ease;
            font-size: 15px;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 12px 24px;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
        }
        .btn-primary:hover {
            background: #e85a28;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.35);
        }
        .btn-outline {
            border: 2px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            padding: 10px 24px;
            background: transparent;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-dark {
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            box-shadow: 0 4px 14px rgba(14, 59, 60, 0.25);
        }
        .btn-dark:hover {
            background: #164a4b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(14, 59, 60, 0.3);
        }
        .nav-cta {
            height: 44px;
            padding: 0 20px;
            font-size: 14px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all .3s ease;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            background: var(--primary);
            padding: 16px 24px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            color: rgba(255, 255, 255, 0.88);
            padding: 12px 8px;
            border-radius: 8px;
            font-size: 16px;
            transition: background .2s ease;
        }
        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .mobile-menu .btn {
            margin-top: 12px;
            justify-content: center;
        }
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .mobile-menu .btn {
                display: inline-flex;
            }
        }
        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--primary);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.35;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 59, 60, 0.92) 0%, rgba(14, 59, 60, 0.7) 50%, rgba(14, 59, 60, 0.55) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 24px;
            max-width: 720px;
            color: #fff;
        }
        .hero-content .logo-text {
            display: inline-block;
            background: rgba(255, 107, 53, 0.2);
            border: 1px solid rgba(255, 107, 53, 0.4);
            color: #ffb99a;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            margin-bottom: 24px;
        }
        .hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 24px;
            color: #fff;
        }
        .hero h1 .accent {
            color: var(--accent);
        }
        .hero-subtitle {
            font-size: 18px;
            line-height: 1.9;
            color: rgba(242, 245, 244, 0.88);
            margin-bottom: 36px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-curve {
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            z-index: 3;
            pointer-events: none;
        }
        .hero-curve svg {
            display: block;
            width: 100%;
            height: 60px;
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 60vh;
            }
            .hero h1 {
                font-size: 36px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-content {
                padding: 60px 24px;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 30px;
            }
            .hero-actions .btn {
                width: 100%;
                padding: 14px 20px;
            }
        }
        /* ===== Pain Points ===== */
        .pain-points {
            background: var(--bg);
            padding: 96px 0;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-head .tagline {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
        }
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
        }
        .pain-item {
            padding: 8px 4px;
        }
        .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(14, 59, 60, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            transition: all .3s ease;
        }
        .pain-icon svg {
            width: 24px;
            height: 24px;
            stroke: var(--primary);
            transition: stroke .3s ease;
        }
        .pain-item:hover .pain-icon {
            background: rgba(255, 107, 53, 0.12);
        }
        .pain-item:hover .pain-icon svg {
            stroke: var(--accent);
        }
        .pain-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .pain-item p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .pain-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===== Solutions ===== */
        .solutions {
            background: #fff;
            padding: 96px 0;
            position: relative;
        }
        .solution-row {
            display: flex;
            align-items: center;
            gap: 64px;
            margin-bottom: 80px;
        }
        .solution-row:last-child {
            margin-bottom: 0;
        }
        .solution-row.reverse {
            flex-direction: row-reverse;
        }
        .solution-img {
            flex: 1;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            transition: transform .4s ease, box-shadow .4s ease;
        }
        .solution-img:hover {
            transform: scale(1.03);
            box-shadow: var(--shadow-hover);
        }
        .solution-img img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .solution-content {
            flex: 1;
        }
        .solution-content h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .solution-content p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .solution-points {
            list-style: none;
            margin: 16px 0;
        }
        .solution-points li {
            font-size: 15px;
            color: var(--text-main);
            padding: 4px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .solution-points li::before {
            content: '✓';
            color: var(--accent);
            font-weight: 700;
        }
        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 15px;
            color: var(--primary);
            transition: color .25s ease, gap .25s ease;
            margin-top: 8px;
        }
        .read-more:hover {
            color: var(--accent);
            gap: 10px;
        }
        @media (max-width: 768px) {
            .solution-row,
            .solution-row.reverse {
                flex-direction: column;
                gap: 32px;
                margin-bottom: 56px;
            }
            .solution-img img {
                height: 220px;
            }
        }
        /* ===== Stats ===== */
        .stats {
            background: var(--primary);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .stats-inner {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
        }
        .stat-item {
            text-align: center;
            padding: 24px 16px;
            border-right: 1px solid rgba(255, 255, 255, 0.1);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-num {
            font-size: 48px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -0.03em;
        }
        .stat-label {
            font-size: 15px;
            color: rgba(242, 245, 244, 0.75);
            margin-top: 8px;
        }
        .stats-note {
            text-align: center;
            color: rgba(242, 245, 244, 0.55);
            font-size: 14px;
            margin-top: 32px;
        }
        @media (max-width: 768px) {
            .stats-inner {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-item:nth-child(2) {
                border-right: none;
            }
            .stat-item:nth-child(-n+2) {
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .stat-num {
                font-size: 36px;
            }
        }
        @media (max-width: 520px) {
            .stat-num {
                font-size: 28px;
            }
        }
        /* ===== Testimonials ===== */
        .testimonials {
            background: var(--bg);
            padding: 96px 0;
        }
        .testimonial-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .testimonial-item {
            display: flex;
            gap: 24px;
            padding: 32px 0;
            border-bottom: 1px solid var(--border);
        }
        .testimonial-item:first-child {
            padding-top: 0;
        }
        .testimonial-avatar {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #164a4b);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            flex-shrink: 0;
        }
        .testimonial-body {
            flex: 1;
        }
        .testimonial-quote {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-main);
            margin-bottom: 8px;
            position: relative;
            padding-left: 20px;
        }
        .testimonial-quote::before {
            content: '"';
            position: absolute;
            left: 0;
            top: -4px;
            font-size: 28px;
            color: var(--accent);
            font-style: italic;
        }
        .testimonial-author {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .testimonial-role {
            font-size: 13px;
            color: var(--text-sub);
        }
        @media (max-width: 520px) {
            .testimonial-item {
                flex-direction: column;
                gap: 12px;
            }
        }
        /* ===== News ===== */
        .news {
            background: #fff;
            padding: 96px 0;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: all .35s ease;
        }
        .news-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
        }
        .news-thumb {
            width: 120px;
            height: 90px;
            flex-shrink: 0;
            border-radius: 8px;
            overflow: hidden;
            background: #e8ecea;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 6px;
        }
        .news-meta .badge {
            display: inline-block;
            background: rgba(14, 59, 60, 0.1);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
        }
        .news-meta time {
            font-size: 12px;
            color: var(--text-sub);
        }
        .news-body h3 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 4px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .news-body h3 a {
            color: var(--text-main);
        }
        .news-body h3 a:hover {
            color: var(--accent);
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .empty-state {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg);
            border: 2px dashed var(--border);
            border-radius: var(--radius-card);
            color: var(--text-sub);
            font-size: 16px;
        }
        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .news-card {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
        }
        /* ===== FAQ ===== */
        .faq {
            background: var(--bg);
            padding: 96px 0;
        }
        .faq-list {
            max-width: 768px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 16px;
            background: #fff;
            overflow: hidden;
            transition: border-color .3s ease, box-shadow .3s ease;
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-item[open] {
            border-left: 3px solid var(--accent);
        }
        .faq-summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            list-style: none;
            transition: color .25s ease;
        }
        .faq-summary::-webkit-details-marker {
            display: none;
        }
        .faq-summary:hover {
            color: var(--accent);
        }
        .faq-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(14, 59, 60, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            flex-shrink: 0;
            transition: all .3s ease;
        }
        .faq-item[open] .faq-icon {
            background: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.9;
        }
        /* ===== CTA ===== */
        .cta {
            background: linear-gradient(135deg, var(--bg) 0%, #ede8df 50%, #f5f0ea 100%);
            padding: 96px 0;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }
        .cta-left h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .cta-left p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.9;
            margin-bottom: 24px;
        }
        .cta-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .cta-contact-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            color: var(--text-main);
        }
        .cta-contact-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .cta-form-card {
            background: #fff;
            border-radius: 16px;
            padding: 32px;
            box-shadow: 8px 8px 0 rgba(14, 59, 60, 0.08);
            border: 1px solid var(--border);
        }
        .cta-form-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .cta-form-card .form-sub {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 24px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 12px 16px;
            font-size: 15px;
            transition: border-color .3s ease, box-shadow .3s ease;
            background: var(--bg);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(255, 107, 53, 0.3);
            background: #fff;
        }
        .form-group textarea {
            height: 100px;
            resize: vertical;
        }
        .form-footer {
            font-size: 12px;
            color: var(--text-sub);
            text-align: center;
            margin-top: 12px;
        }
        @media (max-width: 768px) {
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .cta-form-card {
                padding: 24px;
            }
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            padding: 64px 0 0;
            color: rgba(242, 245, 244, 0.8);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand .brand-name {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(242, 245, 244, 0.6);
            margin-top: 12px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: rgba(242, 245, 244, 0.7);
            font-size: 14px;
            transition: color .25s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact {
            font-size: 14px;
            line-height: 2;
            color: rgba(242, 245, 244, 0.7);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(242, 245, 244, 0.45);
        }
        .footer-bottom .divider {
            margin: 0 8px;
            opacity: 0.4;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 10px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(14, 59, 60, 0.3);
            border-radius: 5px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(14, 59, 60, 0.5);
        }
        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        /* ===== Decorative ===== */
        .texture-dots {
            background-image: radial-gradient(rgba(14, 59, 60, 0.04) 1px, transparent 1px);
            background-size: 16px 16px;
        }

/* roulang page: article */
:root {
            --primary: #0e3b3c;
            --accent: #ff6b35;
            --bg-warm: #f6f5f2;
            --ink: #1a1f1e;
            --sub: #6b7575;
            --line: #e2e6e4;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg-warm);
            color: var(--ink);
            line-height: 1.8;
            font-size: 16px;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
        }

        /* 导航 */
        .site-header {
            background: rgba(14, 59, 60, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: all 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(14, 59, 60, 0.98);
            box-shadow: 0 4px 20px rgba(14, 59, 60, 0.2);
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .brand-block {
            display: flex;
            align-items: baseline;
            gap: 10px;
        }
        .brand-name {
            font-size: 22px;
            font-weight: 700;
            color: #f2f5f4;
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .brand-sub {
            font-size: 12px;
            color: rgba(242, 245, 244, 0.6);
            letter-spacing: 0.02em;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav .nav-link {
            color: rgba(242, 245, 244, 0.75);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            position: relative;
            transition: color 0.2s ease, background 0.2s ease;
        }
        .main-nav .nav-link:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav .nav-link.active {
            color: #ffffff;
        }
        .main-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff !important;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: 8px;
            transition: all 0.25s ease;
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }
        .nav-cta:hover {
            background: #f25f2e;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
        }
        .nav-cta svg {
            width: 16px;
            height: 16px;
            transition: transform 0.2s ease;
        }
        .nav-cta:hover svg {
            transform: translateX(3px);
        }
        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .mobile-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: #f2f5f4;
            margin: 3px 0;
            transition: all 0.3s ease;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #0e3b3c;
            padding: 20px 24px 28px;
            z-index: 999;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            color: rgba(242, 245, 244, 0.85);
            font-size: 16px;
            font-weight: 500;
            padding: 14px 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 6px;
            transition: background 0.2s ease;
        }
        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu .mobile-cta {
            background: var(--accent);
            color: #fff;
            text-align: center;
            border-radius: 8px;
            padding: 14px;
            margin-top: 16px;
            font-weight: 600;
        }

        /* 面包屑 */
        .breadcrumb-wrap {
            background: linear-gradient(180deg, rgba(14, 59, 60, 0.04) 0%, rgba(14, 59, 60, 0.01) 100%);
            border-bottom: 1px solid var(--line);
            padding: 16px 0;
        }
        .breadcrumb {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            font-size: 14px;
            color: var(--sub);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: #b0b8b8;
            margin: 0 2px;
        }
        .breadcrumb .current {
            color: var(--sub);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 260px;
        }

        /* 文章头部信息条 */
        .article-meta-bar {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px;
            margin-top: -28px;
            position: relative;
            z-index: 10;
            padding: 20px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: 0 1px 3px rgba(14, 59, 60, 0.06);
        }
        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--sub);
        }
        .article-meta-item .label {
            color: #9aa3a3;
            font-weight: 400;
        }
        .article-meta-item .value {
            color: var(--primary);
            font-weight: 600;
        }
        .article-category-tag {
            display: inline-block;
            background: rgba(255, 107, 53, 0.12);
            color: #e05512;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }

        /* 文章正文排版 */
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: #2a3231;
        }
        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-top: 2em;
            margin-bottom: 0.8em;
            line-height: 1.3;
            letter-spacing: -0.02em;
            padding-bottom: 12px;
            border-bottom: 2px solid rgba(14, 59, 60, 0.08);
        }
        .article-body h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            line-height: 1.35;
        }
        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 1.4em;
            margin-bottom: 0.4em;
        }
        .article-body p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.5em 1.6em;
        }
        .article-body li {
            margin-bottom: 0.5em;
            padding-left: 4px;
        }
        .article-body ul li {
            list-style-type: disc;
        }
        .article-body ol li {
            list-style-type: decimal;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(255, 107, 53, 0.06);
            padding: 20px 24px;
            margin: 1.8em 0;
            border-radius: 0 12px 12px 0;
            color: #4a5352;
            font-style: normal;
            line-height: 1.8;
        }
        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-body a {
            color: var(--accent);
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 107, 53, 0.3);
        }
        .article-body a:hover {
            color: #d95412;
            border-bottom-color: #d95412;
        }
        .article-body img {
            border-radius: 8px;
            margin: 1.8em 0;
            box-shadow: 0 4px 16px rgba(14, 59, 60, 0.08);
        }
        .article-body figure {
            margin: 1.8em 0;
        }
        .article-body figcaption {
            font-size: 13px;
            color: var(--sub);
            text-align: center;
            margin-top: 10px;
            line-height: 1.6;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8em 0;
            font-size: 15px;
            line-height: 1.7;
        }
        .article-body table th {
            background: rgba(14, 59, 60, 0.06);
            font-weight: 600;
            color: var(--primary);
            text-align: left;
            padding: 12px 16px;
            border: 1px solid var(--line);
        }
        .article-body table td {
            padding: 12px 16px;
            border: 1px solid var(--line);
            vertical-align: top;
        }
        .article-body table tr:nth-child(even) td {
            background: rgba(14, 59, 60, 0.02);
        }
        .article-body pre {
            background: #1e2a2b;
            color: #e8eceb;
            padding: 20px 24px;
            border-radius: 8px;
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.7;
            margin: 1.8em 0;
        }
        .article-body code {
            font-family: 'SFMono-Regular', Consolas, Menlo, monospace;
            font-size: 14px;
            background: rgba(14, 59, 60, 0.08);
            padding: 2px 6px;
            border-radius: 4px;
        }
        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }

        /* 作者行 */
        .author-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 24px 0;
            margin-top: 40px;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .author-avatar {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #1c5a5c);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .author-info .author-name {
            font-weight: 700;
            color: var(--primary);
            font-size: 16px;
        }
        .author-info .author-desc {
            font-size: 14px;
            color: var(--sub);
        }

        /* 相关推荐 */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .related-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 1px 3px rgba(14, 59, 60, 0.06);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(14, 59, 60, 0.12);
            border-color: rgba(14, 59, 60, 0.3);
        }
        .related-thumb {
            aspect-ratio: 16/9;
            background: linear-gradient(135deg, rgba(14, 59, 60, 0.1), rgba(255, 107, 53, 0.06));
            overflow: hidden;
        }
        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-thumb img {
            transform: scale(1.04);
        }
        .related-body {
            padding: 20px 20px 24px;
        }
        .related-body .related-tag {
            font-size: 12px;
            color: #e05512;
            background: rgba(255, 107, 53, 0.1);
            padding: 2px 10px;
            border-radius: 999px;
            display: inline-block;
            margin-bottom: 10px;
            font-weight: 500;
        }
        .related-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-body p {
            font-size: 14px;
            color: var(--sub);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* 文章未找到 */
        .article-not-found {
            text-align: center;
            padding: 120px 24px;
        }
        .article-not-found .icon-circle {
            width: 88px;
            height: 88px;
            border-radius: 50%;
            background: rgba(14, 59, 60, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 28px;
        }
        .article-not-found .icon-circle svg {
            width: 40px;
            height: 40px;
            color: var(--primary);
        }
        .article-not-found h2 {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--sub);
            margin-bottom: 28px;
        }

        /* 通用按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 8px;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }
        .btn-primary:hover {
            background: #f25f2e;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 107, 53, 0.4);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid rgba(14, 59, 60, 0.2);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(14, 59, 60, 0.06);
            transform: translateY(-2px);
        }

        /* 页脚 */
        .site-footer {
            background: var(--primary);
            color: rgba(242, 245, 244, 0.8);
            padding: 80px 0 0;
            margin-top: 80px;
        }
        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 48px;
            padding-bottom: 56px;
        }
        .footer-brand .brand-name {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(242, 245, 244, 0.6);
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(242, 245, 244, 0.6);
            font-size: 14px;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 14px;
            color: rgba(242, 245, 244, 0.6);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact p::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(242, 245, 244, 0.4);
        }
        .footer-bottom .divider {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.2);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
            .header-inner {
                height: 64px;
            }
            .mobile-menu {
                top: 64px;
            }
        }
        @media (max-width: 768px) {
            .brand-sub {
                display: none;
            }
            .breadcrumb .current {
                max-width: 180px;
            }
            .article-meta-bar {
                padding: 16px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }
            .brand-name {
                font-size: 18px;
            }
            .nav-cta {
                padding: 10px 16px;
                font-size: 13px;
            }
            .breadcrumb {
                padding: 0 16px;
                font-size: 13px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 19px;
            }
            .article-body {
                font-size: 15px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                font-size: 12px;
                padding: 20px 16px;
            }
        }

/* roulang page: category1 */
/* ===== Design Tokens ===== */
        :root {
            --primary: #0e3b3c;
            --primary-light: #175657;
            --accent: #ff6b35;
            --accent-hover: #e5582a;
            --bg-warm: #f6f5f2;
            --text-main: #1a1f1e;
            --text-sub: #6b7575;
            --border: #e2e6e4;
            --border-dark: rgba(255, 255, 255, 0.1);
            --white-ish: #f2f5f4;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 1px 3px rgba(14, 59, 60, 0.06);
            --shadow-hover: 0 12px 32px rgba(14, 59, 60, 0.12);
            --space-section: 96px;
            --space-section-md: 72px;
            --space-section-sm: 48px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-warm);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1152px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

        .container-narrow {
            max-width: 768px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(14, 59, 60, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: background 0.3s, box-shadow 0.3s;
        }

        .site-header.scrolled {
            background: rgba(14, 59, 60, 0.97);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .brand-logo {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            flex-shrink: 0;
        }

        .brand-logo .brand-name {
            color: #ffffff;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        .brand-logo .brand-sub {
            color: rgba(255, 255, 255, 0.6);
            font-size: 12px;
            font-weight: 400;
            letter-spacing: 0.04em;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            position: relative;
            transition: color 0.2s, background 0.2s;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-link.active {
            color: #ffffff;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 4px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #ffffff;
            font-weight: 600;
            font-size: 15px;
            height: 42px;
            padding: 0 20px;
            border-radius: 8px;
            transition: background 0.25s, transform 0.2s, box-shadow 0.25s;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.25);
            flex-shrink: 0;
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 107, 53, 0.35);
        }

        .nav-cta:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.5);
            outline-offset: 2px;
        }

        .nav-cta svg {
            width: 16px;
            height: 16px;
        }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            background: transparent;
            border: none;
            border-radius: 6px;
            color: #ffffff;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-toggle svg {
            width: 24px;
            height: 24px;
        }

        .mobile-nav {
            display: none;
            background: rgba(14, 59, 60, 0.98);
            padding: 12px 24px 20px;
            border-top: 1px solid var(--border-dark);
        }

        .mobile-nav a {
            display: block;
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            font-weight: 500;
            padding: 12px 8px;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
        }

        .mobile-nav .mobile-cta {
            margin-top: 12px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .mobile-nav .mobile-cta .nav-cta {
            justify-content: center;
            height: 48px;
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            background-color: var(--primary);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #ffffff;
            padding: 100px 0 140px;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(14, 59, 60, 0.95) 20%, rgba(14, 59, 60, 0.72) 60%, rgba(14, 59, 60, 0.5) 100%);
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: rgba(255, 255, 255, 0.85);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 16px;
            border-radius: 999px;
            letter-spacing: 0.05em;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }

        .category-hero p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 18px;
            line-height: 1.8;
            max-width: 560px;
            margin-bottom: 32px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #ffffff;
            font-weight: 600;
            font-size: 16px;
            height: 48px;
            padding: 0 28px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            transition: background 0.25s, transform 0.2s, box-shadow 0.25s;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.35);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            color: #ffffff;
            font-weight: 600;
            font-size: 16px;
            height: 48px;
            padding: 0 28px;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.25s;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.8);
        }

        .hero-wave {
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            z-index: 3;
            line-height: 0;
        }

        .hero-wave svg {
            width: 100%;
            height: 80px;
            display: block;
        }

        /* ===== Section ===== */
        .section {
            padding-top: var(--space-section);
            padding-bottom: var(--space-section);
        }

        .section-alt {
            background: #ffffff;
        }

        .section-heading {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }

        .section-heading h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .section-heading p {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ===== Product Line (zigzag) ===== */
        .zigzag-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            margin-bottom: 72px;
        }

        .zigzag-row:last-child {
            margin-bottom: 0;
        }

        .zigzag-row.reverse .zigzag-img {
            order: 2;
        }

        .zigzag-row.reverse .zigzag-text {
            order: 1;
        }

        .zigzag-img {
            overflow: hidden;
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            aspect-ratio: 4 / 3;
            background: #e9ecea;
            position: relative;
        }

        .zigzag-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease, box-shadow 0.4s ease;
        }

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

        .zigzag-text h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .zigzag-text p {
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 18px;
        }

        .zigzag-text ul {
            list-style: none;
            padding: 0;
            margin: 0 0 22px;
        }

        .zigzag-text ul li {
            font-size: 15px;
            color: var(--text-main);
            padding: 4px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .zigzag-text ul li::before {
            content: '✓';
            color: var(--accent);
            font-weight: 700;
            display: inline-block;
            width: 20px;
            height: 20px;
            flex-shrink: 0;
        }

        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            transition: color 0.2s;
        }

        .link-more:hover {
            color: var(--accent);
        }

        .link-more svg {
            width: 14px;
            height: 14px;
            transition: transform 0.2s;
        }

        .link-more:hover svg {
            transform: translateX(3px);
        }

        /* ===== Stats Bar ===== */
        .stats-section {
            background: var(--primary);
            color: #ffffff;
            padding: 64px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
        }

        .stat-item {
            text-align: center;
            padding: 24px 16px;
            border-right: 1px solid rgba(255, 255, 255, 0.1);
        }

        .stat-item:last-child {
            border-right: none;
        }

        .stat-num {
            font-size: 44px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 8px;
        }

        .stats-note {
            text-align: center;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            margin-top: 28px;
            letter-spacing: 0.02em;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 16px;
        }

        .step-card {
            background: #ffffff;
            border-radius: 12px;
            padding: 32px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            position: relative;
            transition: transform 0.25s, box-shadow 0.25s;
        }

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

        .step-num {
            font-size: 16px;
            font-weight: 800;
            color: var(--accent);
            background: rgba(255, 107, 53, 0.1);
            display: inline-block;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            line-height: 40px;
            text-align: center;
            margin-bottom: 16px;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.75;
        }

        /* ===== Scenes ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .scene-card {
            background: #ffffff;
            border-radius: 12px;
            padding: 28px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
        }

        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(14, 59, 60, 0.25);
        }

        .scene-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background: rgba(14, 59, 60, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            transition: background 0.25s;
        }

        .scene-card:hover .scene-icon {
            background: var(--accent);
        }

        .scene-icon svg {
            width: 22px;
            height: 22px;
            color: var(--primary);
            transition: color 0.25s;
        }

        .scene-card:hover .scene-icon svg {
            color: #ffffff;
        }

        .scene-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .scene-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.75;
        }

        /* ===== Related Categories ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: #ffffff;
            border-radius: 12px;
            padding: 32px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: block;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 107, 53, 0.4);
        }

        .related-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            transition: color 0.2s;
        }

        .related-card:hover h3 {
            color: var(--accent);
        }

        .related-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
        }

        .related-card:hover .related-link {
            color: var(--accent);
        }

        .related-link svg {
            width: 14px;
            height: 14px;
            transition: transform 0.2s;
        }

        .related-card:hover .related-link svg {
            transform: translateX(4px);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 768px;
            margin: 0 auto;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .faq-item:hover {
            border-color: rgba(14, 59, 60, 0.3);
            box-shadow: 0 2px 10px rgba(14, 59, 60, 0.06);
        }

        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: color 0.2s;
            position: relative;
        }

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

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

        .faq-item[open] summary {
            border-left: 3px solid var(--accent);
            color: var(--primary);
        }

        .faq-arrow {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
            color: var(--text-sub);
        }

        .faq-item[open] .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            padding: 0 24px 22px 24px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
            border-left: 3px solid var(--accent);
            margin-left: 0;
            background: #fcfcfb;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #f0f4f3 0%, #f6f5f2 50%, #fdf4ef 100%);
            padding: 96px 0;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .cta-grid h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--primary);
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .cta-grid p {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .contact-list {
            list-style: none;
            padding: 0;
            margin: 24px 0 0;
        }

        .contact-list li {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 8px 0;
            color: var(--text-main);
            font-size: 15px;
        }

        .contact-list li svg {
            width: 20px;
            height: 20px;
            color: var(--accent);
            flex-shrink: 0;
        }

        .cta-form-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 36px;
            box-shadow: 0 8px 40px rgba(14, 59, 60, 0.1);
            border: 1px solid rgba(226, 230, 228, 0.6);
        }

        .cta-form-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            height: 48px;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 0 14px;
            font-size: 15px;
            background: #fbfcfb;
            transition: border-color 0.2s, box-shadow 0.2s;
            color: var(--text-main);
        }

        .form-group textarea {
            height: 100px;
            padding: 12px 14px;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.25);
            background: #ffffff;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: #a0aaaa;
        }

        .form-submit {
            width: 100%;
            height: 48px;
            background: var(--accent);
            color: #ffffff;
            font-size: 16px;
            font-weight: 600;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.25s, transform 0.2s, box-shadow 0.25s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .form-submit:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 107, 53, 0.3);
        }

        .form-privacy {
            font-size: 12px;
            color: #a0aaaa;
            text-align: center;
            margin-top: 14px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .brand-name {
            font-size: 22px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 8px;
            line-height: 1.6;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom .divider {
            margin: 0 10px;
            opacity: 0.4;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .zigzag-row {
                gap: 36px;
            }

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

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: var(--space-section-md);
            }

            .header-inner {
                height: 64px;
            }

            .main-nav,
            .header-inner .nav-cta {
                display: none;
            }

            .mobile-toggle {
                display: flex;
                margin-left: auto;
            }

            .mobile-nav.open {
                display: block;
            }

            .category-hero {
                padding: 72px 0 120px;
            }

            .category-hero h1 {
                font-size: 36px;
            }

            .category-hero p {
                font-size: 16px;
            }

            .zigzag-row,
            .zigzag-row.reverse {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .zigzag-row.reverse .zigzag-img {
                order: 1;
            }

            .zigzag-row.reverse .zigzag-text {
                order: 2;
            }

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

            .stat-item:nth-child(2) {
                border-right: none;
            }

            .stat-item:nth-child(1),
            .stat-item:nth-child(2) {
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .section-heading h2 {
                font-size: 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

        @media (max-width: 520px) {
            :root {
                --space-section: var(--space-section-sm);
            }

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

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

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

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

            .stat-num {
                font-size: 32px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                justify-content: center;
                width: 100%;
            }

            .cta-form-card {
                padding: 24px;
            }

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

/* roulang page: category2 */
:root {
            --primary: #0e3b3c;
            --primary-dark: #092a2b;
            --accent: #ff6b35;
            --accent-dark: #e8531f;
            --warm: #f6f5f2;
            --ink: #1a1f1e;
            --muted: #6b7575;
            --light-text: #f2f5f4;
            --border: #e2e6e4;
            --card-bg: #ffffff;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-img: 6px;
            --shadow-sm: 0 1px 3px rgba(14, 59, 60, 0.06);
            --shadow-hover: 0 12px 32px rgba(14, 59, 60, 0.12);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--warm);
            color: var(--ink);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .container-narrow {
            max-width: 768px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.25);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
        }
        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
            transform: translateY(-2px);
        }
        .btn-dark-outline {
            border-color: var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-dark-outline:hover {
            background: rgba(14, 59, 60, 0.06);
            color: var(--primary);
            transform: translateY(-2px);
        }
        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(14, 59, 60, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(9, 42, 43, 0.3);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            height: 72px;
            gap: 24px;
            position: relative;
        }
        .brand {
            display: flex;
            align-items: baseline;
            gap: 6px;
            margin-right: 8px;
            flex-shrink: 0;
        }
        .brand-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1.2;
            text-decoration: none;
        }
        .brand-logo span {
            color: var(--accent);
        }
        .brand-domain {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.5);
            letter-spacing: 0.04em;
            font-weight: 400;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            display: inline-block;
            color: rgba(255, 255, 255, 0.78);
            padding: 8px 16px;
            font-size: 15px;
            border-radius: 8px;
            line-height: 1.4;
            position: relative;
            transition: color 0.25s, background-color 0.25s;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: -2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }
        .nav-cta .btn {
            padding: 10px 20px;
            font-size: 14px;
            height: 44px;
        }
        .nav-cta .btn i {
            font-size: 12px;
            transition: transform 0.25s;
        }
        .nav-cta .btn:hover i {
            transform: translateX(4px);
        }
        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: transparent;
            border-radius: 8px;
            color: #fff;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: background-color 0.2s;
        }
        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 960px) {
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--primary-dark);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px 20px;
                gap: 4px;
                display: none;
                box-shadow: 0 16px 30px rgba(0, 0, 0, 0.25);
                border-top: 1px solid rgba(255, 255, 255, 0.06);
                max-height: calc(100vh - 72px);
                overflow-y: auto;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 8px;
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                background: rgba(255, 107, 53, 0.15);
                color: #fff;
            }
            .mobile-toggle {
                display: inline-flex;
            }
            .nav-bar {
                gap: 12px;
            }
            .brand-domain {
                display: none;
            }
            .nav-cta {
                margin-left: auto;
            }
            .nav-cta .btn {
                padding: 10px 14px;
                font-size: 13px;
                height: 42px;
            }
        }
        /* ========== 页面头部 Hero ========== */
        .page-hero {
            position: relative;
            background: var(--primary);
            padding: 88px 0 96px;
            overflow: hidden;
            color: #fff;
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 0;
        }
        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--warm);
            border-radius: 50% 50% 0 0 / 100% 100% 0 0;
            transform: scale(1.02);
            z-index: 2;
        }
        .page-hero .container {
            position: relative;
            z-index: 3;
            text-align: center;
        }
        .hero-breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s;
        }
        .hero-breadcrumb a:hover {
            color: var(--accent);
        }
        .hero-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }
        .hero-tag {
            display: inline-block;
            padding: 5px 16px;
            border: 1px solid rgba(255, 107, 53, 0.6);
            color: #ff8b5e;
            border-radius: 999px;
            font-size: 13px;
            letter-spacing: 0.08em;
            margin-bottom: 18px;
            background: rgba(255, 107, 53, 0.08);
        }
        .page-hero h1 {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
        }
        .page-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-ctas {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* ========== 区块标题 ========== */
        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-head.left {
            text-align: left;
        }
        .section-kicker {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.14em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 10px;
            position: relative;
            padding-left: 22px;
        }
        .section-kicker::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            width: 14px;
            height: 2px;
            background: var(--accent);
            transform: translateY(-50%);
        }
        .section-head h2 {
            font-size: 34px;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: 14px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--muted);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .section-head.left p {
            margin: 0;
        }
        /* ========== 痛点挑战区块 ========== */
        .challenge-section {
            padding: 96px 0 80px;
            background: var(--warm);
        }
        .challenge-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
        }
        .challenge-item {
            text-align: center;
        }
        .challenge-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: #fff;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .challenge-item:hover .challenge-icon {
            color: var(--accent);
            border-color: rgba(255, 107, 53, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .challenge-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--ink);
        }
        .challenge-item p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.8;
        }
        /* ========== 方案矩阵 zigzag ========== */
        .solution-section {
            padding: 96px 0 64px;
            background: #fff;
        }
        .zigzag-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: 64px;
            margin-bottom: 88px;
        }
        .zigzag-row:nth-child(even) .zigzag-img {
            order: 2;
        }
        .zigzag-img {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            aspect-ratio: 4/3;
            background: var(--warm);
        }
        .zigzag-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .zigzag-img:hover img {
            transform: scale(1.03);
        }
        .zigzag-img::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 30%;
            background: linear-gradient(to top, rgba(14, 59, 60, 0.08), transparent);
            pointer-events: none;
        }
        .zigzag-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .zigzag-text h4 {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--primary);
        }
        .zigzag-text p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--muted);
            margin-bottom: 14px;
        }
        .zigzag-points {
            list-style: none;
            margin: 16px 0 20px;
            display: grid;
            gap: 8px;
        }
        .zigzag-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--ink);
            font-weight: 500;
        }
        .zigzag-points li i {
            color: var(--accent);
            font-size: 14px;
            margin-top: 5px;
        }
        .zigzag-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
        }
        .zigzag-link i {
            transition: transform 0.25s;
        }
        .zigzag-link:hover i {
            transform: translateX(4px);
        }
        /* ========== 流程区块 ========== */
        .process-section {
            background: var(--primary);
            padding: 96px 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .process-section::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -120px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 107, 53, 0.06);
        }
        .process-section .section-head h2 {
            color: #fff;
        }
        .process-section .section-head p {
            color: rgba(255, 255, 255, 0.65);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
        }
        .process-steps::before {
            content: "";
            position: absolute;
            top: 36px;
            left: 8%;
            right: 8%;
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
        }
        .process-step {
            text-align: center;
            position: relative;
        }
        .step-num {
            width: 72px;
            height: 72px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
            color: var(--accent);
            position: relative;
            z-index: 2;
            background: var(--primary);
            transition: border-color 0.3s;
        }
        .process-step:hover .step-num {
            border-color: var(--accent);
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: #fff;
        }
        .process-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
        }
        /* ========== 适用场景 ========== */
        .scenario-section {
            padding: 96px 0;
            background: var(--warm);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            border-top: 3px solid var(--primary);
        }
        .scenario-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-top-color: var(--accent);
        }
        .scenario-card .scen-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(14, 59, 60, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 18px;
            transition: background-color 0.3s, color 0.3s;
        }
        .scenario-card:hover .scen-icon {
            background: var(--accent);
            color: #fff;
        }
        .scenario-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
        }
        .scenario-card .scen-link {
            display: inline-block;
            margin-top: 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .scenario-card .scen-link:hover {
            color: var(--accent);
        }
        /* ========== FAQ ========== */
        .faq-section {
            padding: 96px 0;
            background: #fff;
        }
        .faq-list {
            max-width: 768px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }
        .faq-item {
            background: var(--warm);
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .faq-item[open] {
            border-left: 3px solid var(--accent);
            box-shadow: var(--shadow-sm);
            border-color: rgba(255, 107, 53, 0.25);
        }
        .faq-item summary {
            cursor: pointer;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            line-height: 1.6;
            color: var(--ink);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            list-style: none;
            outline: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--accent);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item .faq-body {
            padding: 0 24px 22px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
        }
        .faq-item summary:hover {
            background: rgba(14, 59, 60, 0.03);
        }
        /* ========== CTA + 表单 ========== */
        .cta-section {
            padding: 96px 0;
            background: linear-gradient(135deg, #f0eeea 0%, var(--warm) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-wrapper {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 64px;
            align-items: center;
        }
        .cta-left h2 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .cta-left > p {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.9;
            margin-bottom: 32px;
            max-width: 440px;
        }
        .cta-contact {
            display: grid;
            gap: 18px;
        }
        .cta-contact-item {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 15px;
            color: var(--ink);
        }
        .cta-contact-item i {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            flex-shrink: 0;
        }
        .cta-contact-item span {
            color: var(--muted);
            font-size: 14px;
        }
        .form-card {
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 16px 48px rgba(14, 59, 60, 0.12);
            padding: 36px;
            border: 1px solid rgba(226, 230, 228, 0.8);
        }
        .form-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .form-card .form-sub {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 26px;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-field.full {
            grid-column: 1 / -1;
        }
        .form-field label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .form-input {
            width: 100%;
            height: 48px;
            padding: 0 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            background: #fafaf8;
            font-size: 15px;
            color: var(--ink);
            transition: border-color 0.25s, box-shadow 0.25s, background-color 0.25s;
            outline: none;
        }
        .form-input:focus {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.18);
        }
        .form-input::placeholder {
            color: #a8b0af;
        }
        textarea.form-input {
            height: 100px;
            padding: 12px 14px;
            resize: vertical;
            line-height: 1.6;
        }
        .form-submit {
            width: 100%;
            margin-top: 20px;
            height: 50px;
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.25);
        }
        .form-submit:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(255, 107, 53, 0.3);
        }
        .form-privacy {
            margin-top: 14px;
            text-align: center;
            font-size: 12px;
            color: var(--muted);
        }
        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
            position: relative;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent 60%);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .brand-name {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .brand-name span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            list-style: none;
            display: grid;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact {
            display: grid;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom .divider {
            margin: 0 10px;
            opacity: 0.3;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .page-hero h1 {
                font-size: 38px;
            }
            .challenge-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 36px;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 30px;
            }
            .process-steps::before {
                display: none;
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .zigzag-row {
                gap: 40px;
            }
            .cta-wrapper {
                grid-template-columns: 1fr;
                gap: 48px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 64px 0 72px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-hero p {
                font-size: 16px;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .zigzag-row {
                grid-template-columns: 1fr;
                margin-bottom: 56px;
            }
            .zigzag-row:nth-child(even) .zigzag-img {
                order: 0;
            }
            .challenge-section,
            .solution-section,
            .process-section,
            .scenario-section,
            .faq-section,
            .cta-section {
                padding-top: 64px;
                padding-bottom: 64px;
            }
            .form-card {
                padding: 28px 24px;
            }
        }
        @media (max-width: 640px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .challenge-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-ctas {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-ctas .btn {
                width: 100%;
            }
            .section-head {
                margin-bottom: 40px;
            }
        }
        @media (min-width: 1280px) {
            .container {
                max-width: 1200px;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #0e3b3c;
  --accent: #ff6b35;
  --bg: #f6f5f2;
  --bg-soft: #fbfaf7;
  --text: #1a1f1e;
  --muted: #6b7575;
  --border: #e2e6e4;
  --dark-border: rgba(255, 255, 255, 0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(14, 59, 60, 0.06);
  --shadow-md: 0 12px 32px rgba(14, 59, 60, 0.12);
  --container: 1200px;
  --section-y: 96px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul {
  list-style: none;
}

button {
  font-family: inherit;
}

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

.section-pad {
  padding: var(--section-y) 0;
}

.section-title {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.section-lead {
  color: var(--muted);
  font-size: 16px;
  max-width: 640px;
  margin-top: 12px;
  line-height: 1.8;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(14, 59, 60, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.03);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}

.brand-block {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex-shrink: 0;
}

.brand-name {
  color: #f2f5f4;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.brand-sub {
  color: rgba(242, 245, 244, 0.55);
  font-size: 11px;
  letter-spacing: 0.02em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-link {
  color: rgba(242, 245, 244, 0.85);
  font-size: 15px;
  font-weight: 500;
  padding: 6px 0;
  position: relative;
  transition: color .2s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: #fff;
}

.nav-link.active {
  color: #fff;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  height: 46px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  transition: all .25s ease;
  white-space: nowrap;
}

.nav-cta:hover {
  transform: translateY(-2px);
  background: #ff7a4a;
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.32);
  color: #fff;
}

.nav-cta i {
  font-size: 14px;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  color: #f2f5f4;
  font-size: 20px;
  cursor: pointer;
  transition: background .2s ease;
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(105deg, rgba(14, 59, 60, 0.92) 30%, rgba(14, 59, 60, 0.72)), url('/assets/images/backpic/back-2.webp') center 30% / cover no-repeat;
  color: #f2f5f4;
  padding: 96px 0 88px;
  min-height: 62vh;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.hero-inner {
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(242, 245, 244, 0.9);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 22px;
  backdrop-filter: blur(4px);
}

.hero h1 {
  font-size: 50px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-sub {
  font-size: 18px;
  line-height: 1.8;
  margin-top: 20px;
  max-width: 560px;
  color: rgba(242, 245, 244, 0.85);
}

.hero-meta {
  margin-top: 18px;
  font-size: 14px;
  color: rgba(242, 245, 244, 0.6);
  letter-spacing: 0.02em;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 34px;
  flex-wrap: wrap;
}

.hero-breadcrumb {
  margin-top: 26px;
  font-size: 13px;
  color: rgba(242, 245, 244, 0.5);
}

.hero-breadcrumb a {
  color: rgba(242, 245, 244, 0.75);
}

.hero-breadcrumb a:hover {
  color: var(--accent);
}

/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  height: 48px;
  padding: 0 28px;
  font-size: 15px;
  transition: all .25s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 107, 53, 0.35);
  color: #fff;
}

.btn-outline {
  border: 1px solid rgba(242, 245, 244, 0.55);
  color: #f2f5f4;
  background: transparent;
}

.btn-outline:hover {
  background: rgba(242, 245, 244, 0.12);
  border-color: #fff;
  color: #fff;
}

/* ===== Service Scope ===== */
.service-scope {
  background: var(--bg-soft);
}

.scope-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 56px;
}

.scope-header .section-lead {
  margin-left: auto;
  margin-right: auto;
}

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

.service-card {
  background: #fff;
  border: 1px solid var(--border);
  outline: 1px solid rgba(14, 59, 60, 0.05);
  outline-offset: 4px;
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  position: relative;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: #cbd6d2;
}

.service-index {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(14, 59, 60, 0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 22px;
  margin-bottom: 18px;
  transition: background .25s ease, color .25s ease;
}

.service-card:hover .service-icon {
  background: var(--primary);
  color: var(--accent);
}

.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.service-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

/* ===== Process ===== */
.process-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 76px;
}

.process-row:last-child {
  margin-bottom: 0;
}

.process-row.reverse .process-visual {
  order: 2;
}

.process-visual {
  position: relative;
}

.process-visual img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 16px 40px rgba(14, 59, 60, 0.14);
  transition: transform .4s ease, box-shadow .4s ease;
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.process-visual:hover img {
  transform: scale(1.02);
  box-shadow: 0 20px 48px rgba(14, 59, 60, 0.2);
}

.process-visual::after {
  content: "";
  position: absolute;
  right: -14px;
  bottom: -14px;
  width: 70px;
  height: 70px;
  border: 2px solid rgba(255, 107, 53, 0.4);
  border-radius: 12px;
  z-index: -1;
}

.process-content h3 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  letter-spacing: -0.01em;
}

.process-content p {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.8;
}

.process-list {
  margin-top: 22px;
}

.process-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 12px;
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
}

.process-list li i {
  color: var(--accent);
  font-size: 15px;
  margin-top: 4px;
}

/* ===== Standards ===== */
.standards {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 56px;
  box-shadow: var(--shadow-sm);
}

.standards .section-title {
  font-size: 30px;
}

.standards-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px 48px;
  margin-top: 36px;
}

.standard-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px dashed #e8ebe9;
}

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

.standard-item i {
  color: var(--accent);
  font-size: 18px;
  margin-top: 4px;
}

.standard-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.standard-item p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 4px;
  line-height: 1.7;
}

/* ===== Stats ===== */
.stats-band {
  background: var(--primary);
  color: #f2f5f4;
  padding: 68px 0;
  position: relative;
  overflow: hidden;
}

.stats-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
  position: relative;
}

.stat-item {
  padding: 0 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.stat-item:last-child {
  border-right: none;
}

.stat-num {
  font-size: 46px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 14px;
  color: rgba(242, 245, 244, 0.72);
  margin-top: 8px;
}

.stats-note {
  text-align: center;
  font-size: 14px;
  color: rgba(242, 245, 244, 0.55);
  margin-top: 40px;
  position: relative;
}

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

.faq-head {
  text-align: center;
  margin-bottom: 48px;
}

.faq-head .section-lead {
  margin-left: auto;
  margin-right: auto;
}

.faq-list {
  max-width: 768px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s ease, border-color .25s ease;
}

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

.faq-item[open] {
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 600;
  font-size: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  color: var(--text);
}

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

.faq-item summary::-moz-list-bullet {
  list-style: none;
}

.faq-toggle {
  color: var(--muted);
  font-size: 20px;
  transform: rotate(0deg);
  transition: transform .3s ease, color .3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item[open] .faq-toggle {
  transform: rotate(45deg);
  color: var(--accent);
}

.faq-answer {
  padding: 0 24px 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px dashed #ecefEd;
  margin-top: 0;
}

.faq-answer p {
  padding-top: 16px;
}

/* ===== Related Pages ===== */
.related-wrap {
  background: var(--bg);
}

.related-head {
  text-align: center;
  margin-bottom: 48px;
}

.related-head .section-lead {
  margin-left: auto;
  margin-right: auto;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.related-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 30px 28px;
  color: inherit;
  box-shadow: 3px 3px 0 rgba(14, 59, 60, 0.06);
  transition: all .25s ease;
}

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

.related-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  transition: color .2s ease;
}

.related-card:hover h3 {
  color: var(--accent);
}

.related-card p {
  color: var(--muted);
  font-size: 14px;
  margin-top: 10px;
  line-height: 1.7;
}

.related-card .related-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(180deg, #f6f5f2 0%, #efece6 100%);
  padding: 96px 0;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.cta-info h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.cta-info > p {
  color: var(--muted);
  margin-top: 18px;
  line-height: 1.8;
}

.cta-contact {
  margin-top: 28px;
}

.cta-contact li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  color: var(--text);
  font-size: 15px;
}

.cta-contact i {
  color: var(--accent);
  width: 20px;
  text-align: center;
}

.form-card {
  background: #fff;
  border-radius: 16px;
  padding: 38px;
  box-shadow: 0 16px 48px rgba(14, 59, 60, 0.12);
  border: 1px solid var(--border);
}

.form-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}

.form-card .form-desc {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 22px;
}

.form-field {
  margin-bottom: 18px;
}

.form-field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.form-field input,
.form-field textarea {
  width: 100%;
  height: 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  font-size: 15px;
  background: #fbfaf7;
  color: var(--text);
  transition: border-color .2s ease, box-shadow .2s ease;
  font-family: inherit;
}

.form-field textarea {
  height: 116px;
  padding: 12px 14px;
  resize: vertical;
  line-height: 1.6;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.22);
  background: #fff;
}

.form-submit {
  width: 100%;
  height: 52px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 107, 53, 0.35);
  background: #ff7a4a;
}

.form-note {
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  margin-top: 16px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary);
  color: rgba(242, 245, 244, 0.72);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .brand-name {
  color: #fff;
  font-size: 24px;
  font-weight: 800;
}

.footer-brand p {
  font-size: 14px;
  margin-top: 14px;
  color: rgba(242, 245, 244, 0.55);
  max-width: 280px;
  line-height: 1.8;
}

.footer-title {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

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

.footer-links a {
  color: rgba(242, 245, 244, 0.7);
  font-size: 14px;
  transition: color .2s ease, padding-left .2s ease;
}

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

.footer-contact p {
  font-size: 14px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact i {
  color: var(--accent);
  width: 16px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  font-size: 13px;
  color: rgba(242, 245, 244, 0.45);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom .divider {
  opacity: 0.4;
}

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

  .process-row {
    grid-template-columns: 1fr;
    gap: 36px;
    margin-bottom: 56px;
  }

  .process-row.reverse .process-visual {
    order: 0;
  }

  .process-visual::after {
    display: none;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 0;
  }

  .stat-item {
    border-right: none;
  }

  .stat-item:nth-child(3) {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
  }

  .stat-item:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .cta-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-y: 56px;
  }

  .header-inner {
    height: 68px;
    gap: 12px;
  }

  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(14, 59, 60, 0.98);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 16px;
    display: none;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }

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

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

  .nav-cta {
    margin-left: auto;
    height: 42px;
    padding: 0 16px;
    font-size: 14px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero {
    padding: 64px 0 56px;
    min-height: auto;
  }

  .hero-sub {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .standards {
    padding: 32px 24px;
    border-radius: 16px;
  }

  .standards-list {
    grid-template-columns: 1fr;
    gap: 12px 0;
  }

  .related-links {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-brand p {
    max-width: 100%;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 20px;
  }

  .section-title {
    font-size: 28px;
  }

  .brand-name {
    font-size: 17px;
  }

  .brand-sub {
    font-size: 10px;
  }

  .nav-cta span {
    display: none;
  }

  .nav-cta {
    width: 44px;
    padding: 0;
    justify-content: center;
  }

  .nav-cta i {
    margin: 0;
  }

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

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

  .stat-item {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
  }

  .stat-item:first-child {
    border-top: none;
  }

  .form-card {
    padding: 28px 20px;
  }

  .cta-section {
    padding: 56px 0;
  }

  .cta-info h2 {
    font-size: 30px;
  }
}