/* roulang page: index */
:root {
            --primary: #1F3D2B;
            --primary-dark: #14251B;
            --primary-light: #2C5242;
            --lime: #C6F24E;
            --warm-bg: #FAF9F6;
            --warm-card: #F7F5F0;
            --warm-gray: #F1EFEA;
            --text-primary: #1A1A1A;
            --text-body: #444444;
            --text-secondary: #777777;
            --text-light: #999999;
            --border-color: #E6E3DC;
            --border-light: #E8E5DE;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-card: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.08);
        }

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

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            background-color: var(--warm-bg);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        input {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

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

        /* ===== Header ===== */
        .site-header {
            background: #FAFAF7;
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 50;
            height: 64px;
        }

        .header-inner {
            display: flex;
            align-items: center;
            height: 64px;
            justify-content: space-between;
        }

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

        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: var(--lime);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 18px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 900;
            color: var(--primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: 24px;
        }

        .nav-link {
            display: block;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: all 0.2s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            background: #F0EFEA;
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: #F1EFEA;
            border-radius: 999px;
            padding: 0 14px;
            height: 38px;
            width: 180px;
            transition: all 0.2s ease;
        }

        .search-box:focus-within {
            background: #fff;
            box-shadow: 0 0 0 2px var(--lime);
        }

        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            font-size: 14px;
            width: 100%;
            margin-left: 8px;
            color: var(--text-primary);
        }

        .search-box input::placeholder {
            color: var(--text-light);
        }

        .search-box i {
            color: var(--text-light);
            font-size: 13px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            padding: 0 22px;
            height: 40px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.2s ease;
            white-space: nowrap;
            border: 2px solid transparent;
        }

        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.4);
        }

        .btn-lime {
            background: var(--lime);
            color: var(--primary-dark);
        }

        .btn-lime:hover {
            background: #d4fa6e;
            transform: translateY(-1px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.7);
            border-radius: 999px;
            padding: 0 22px;
            height: 40px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.2s ease;
        }

        .btn-outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
        }

        .hamburger-btn {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            background: transparent;
        }

        .hamburger-btn:hover {
            background: #F0EFEA;
        }

        .hamburger-btn i {
            font-size: 20px;
            color: var(--primary);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: #FAFAF7;
            border-bottom: 1px solid var(--border-light);
            padding: 20px;
            z-index: 49;
            box-shadow: 0 8px 24px rgba(0,0,0,0.08);
        }

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

        .mobile-menu .mobile-nav-link {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 12px;
            margin-bottom: 4px;
        }

        .mobile-menu .mobile-nav-link:hover {
            background: #F0EFEA;
            color: var(--primary);
        }

        .mobile-menu .mobile-nav-link.active {
            color: var(--primary);
            background: #F0EFEA;
            font-weight: 600;
        }

        .mobile-search {
            margin-top: 12px;
            display: flex;
            align-items: center;
            background: #F1EFEA;
            border-radius: 999px;
            padding: 0 16px;
            height: 44px;
        }

        .mobile-search input {
            background: transparent;
            border: none;
            outline: none;
            flex: 1;
            margin-left: 8px;
            font-size: 15px;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            min-height: 640px;
            display: flex;
            align-items: center;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(16,32,24,0.82) 0%, rgba(16,32,24,0.55) 50%, rgba(31,61,43,0.35) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 80px 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(198, 242, 78, 0.15);
            border: 1px solid rgba(198, 242, 78, 0.35);
            color: var(--lime);
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: 0.3px;
        }

        .hero-title {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }

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

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

        .hero-buttons .btn-primary,
        .hero-buttons .btn-outline {
            height: 48px;
            padding: 0 32px;
            font-size: 15px;
        }

        .hero-trust {
            display: flex;
            gap: 20px;
            margin-top: 48px;
            flex-wrap: wrap;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255,255,255,0.8);
            font-size: 14px;
        }

        .trust-item i {
            color: var(--lime);
            font-size: 14px;
        }

        /* ===== Section ===== */
        .section {
            padding: 90px 0;
        }

        .section-alt {
            background: var(--warm-gray);
        }

        .section-head {
            max-width: 720px;
            margin-bottom: 50px;
        }

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

        .section-tag {
            display: inline-block;
            background: rgba(31, 61, 43, 0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.3;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            margin-top: 14px;
            line-height: 1.7;
        }

        /* ===== Pain Points ===== */
        .pain-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .pain-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .pain-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: all 0.3s ease;
        }

        .pain-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }

        .pain-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(198, 242, 78, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
        }

        .pain-item h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .pain-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

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

        .feature-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 32px 28px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

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

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

        .feature-icon {
            width: 48px;
            height: 48px;
            background: rgba(31, 61, 43, 0.08);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            margin-bottom: 20px;
        }

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

        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .feature-card:nth-child(2) {
            transform: translateY(16px);
        }

        .feature-card:nth-child(2):hover {
            transform: translateY(12px);
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--primary-dark);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(198, 242, 78, 0.05);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stat-item {
            text-align: center;
            padding: 20px;
        }

        .stat-number {
            font-size: 44px;
            font-weight: 900;
            color: var(--lime);
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
        }

        .stat-note {
            font-size: 12px;
            color: rgba(255,255,255,0.4);
            margin-top: 24px;
            text-align: center;
        }

        /* ===== News Card ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            overflow: hidden;
            transition: all 0.3s ease;
            display: block;
        }

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

        .news-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .news-card:hover .news-cover img {
            transform: scale(1.05);
        }

        .news-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(31, 61, 43, 0.85);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }

        .news-body {
            padding: 20px;
        }

        .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s ease;
        }

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

        .news-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }

        .news-date {
            font-size: 12px;
            color: var(--text-light);
        }

        .news-link {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
        }

        .news-empty {
            text-align: center;
            padding: 48px 24px;
            background: #fff;
            border: 2px dashed var(--border-color);
            border-radius: 20px;
            color: var(--text-light);
            font-size: 15px;
        }

        .news-empty i {
            font-size: 36px;
            display: block;
            margin-bottom: 14px;
            color: #d0cdc5;
        }

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

        .testi-card {
            background: var(--warm-card);
            border-radius: 20px;
            padding: 28px;
            border-left: 4px solid var(--primary);
            transition: all 0.3s ease;
        }

        .testi-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .testi-text {
            font-size: 15px;
            font-style: italic;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .testi-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testi-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--lime);
            font-size: 16px;
            font-weight: 600;
        }

        .testi-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .testi-role {
            font-size: 12px;
            color: var(--text-light);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: #d4d0c8;
        }

        .faq-item details {
            padding: 0;
        }

        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            list-style: none;
        }

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

        .faq-item summary i {
            color: var(--primary);
            transition: transform 0.3s ease;
            font-size: 14px;
        }

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

        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: var(--primary);
            border-radius: 28px;
            padding: 56px 48px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(20, 37, 27, 0.8);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
            text-align: center;
        }

        .cta-title {
            font-size: 34px;
            font-weight: 900;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .cta-desc {
            font-size: 16px;
            color: rgba(255,255,255,0.8);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            padding-top: 64px;
            padding-bottom: 24px;
            color: rgba(255,255,255,0.8);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 48px;
        }

        .footer-brand {
            margin-bottom: 16px;
        }

        .footer-brand .brand-text {
            color: #fff;
            font-size: 20px;
        }

        .footer-brand .brand-icon {
            background: var(--lime);
            color: var(--primary-dark);
        }

        .footer-desc {
            font-size: 14px;
            color: rgba(255,255,255,0.5);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 280px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .copyright {
            font-size: 13px;
            color: rgba(255,255,255,0.45);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .search-box {
                display: none;
            }
            .header-actions .btn-primary {
                display: none;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 20px;
                padding-right: 20px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .pain-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-card:nth-child(2) {
                transform: none;
            }
            .feature-card:nth-child(2):hover {
                transform: translateY(-4px);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .testi-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 40px 24px;
                border-radius: 20px;
            }
            .cta-title {
                font-size: 24px;
            }
            .section {
                padding: 60px 0;
            }
        }

        @media (max-width: 520px) {
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline {
                width: 100%;
                padding: 0 16px;
            }
            .hero-trust {
                gap: 12px;
                flex-direction: column;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* Focus visible */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.4);
            border-radius: 4px;
        }

/* roulang page: category1 */
:root {
            --color-primary: #1F3D2B;
            --color-primary-light: #2C5242;
            --color-accent: #C6F24E;
            --color-bg: #FAF9F6;
            --color-surface: #FFFFFF;
            --color-surface-alt: #F1EFEA;
            --color-border: #E6E3DC;
            --color-text: #1A1A1A;
            --color-body: #444444;
            --color-muted: #777777;
            --color-light: #999999;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-full: 999px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            background: var(--color-bg);
            color: var(--color-body);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 640px) {
            .container-custom {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(250, 247, 240, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid #E8E5DE;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 17px;
            flex-shrink: 0;
            letter-spacing: 0;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 900;
            color: var(--color-primary);
            white-space: nowrap;
            line-height: 1.2;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: 24px;
        }

        .nav-link {
            position: relative;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: #444;
            border-radius: 999px;
            transition: color 0.2s, background 0.2s;
            white-space: nowrap;
            display: inline-block;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: #F0EFEA;
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .search-box {
            position: relative;
            width: 180px;
        }

        .search-box input {
            width: 100%;
            height: 38px;
            border-radius: 999px;
            background: #F1EFEA;
            border: 1px solid transparent;
            padding: 0 16px 0 38px;
            font-size: 14px;
            outline: none;
            transition: all 0.25s;
            font-family: inherit;
            color: #333;
        }

        .search-box input::placeholder {
            color: #999;
        }

        .search-box input:focus {
            background: #fff;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(31, 61, 43, 0.12);
        }

        .search-box i {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: #999;
            font-size: 14px;
            pointer-events: none;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 42px;
            padding: 0 24px;
            border-radius: 999px;
            background: var(--color-primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-primary:hover {
            background: var(--color-primary-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(31, 61, 43, 0.25);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px var(--color-accent);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border-radius: 999px;
            background: var(--color-accent);
            color: #1A1A1A;
            font-size: 16px;
            font-weight: 700;
            transition: all 0.25s;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-accent:hover {
            background: #d5f76a;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(198, 242, 78, 0.35);
        }

        .btn-accent:active {
            transform: scale(0.97);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            background: transparent;
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.25s;
            white-space: nowrap;
        }

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

        .btn-ghost:active {
            transform: scale(0.97);
        }

        /* 页面横幅 */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 80px 0 72px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(16, 32, 24, 0.86), rgba(31, 61, 43, 0.72));
        }

        .page-hero>* {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
        }

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

        .breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }

        /* 卡片 */
        .card-hover {
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }

        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
            border-color: rgba(31, 61, 43, 0.2);
        }

        /* 图片缩放 */
        .img-zoom-wrapper {
            overflow: hidden;
        }

        .img-zoom-wrapper img {
            transition: transform 0.5s ease;
        }

        .img-zoom-wrapper:hover img {
            transform: scale(1.05);
        }

        /* 区块标签 */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--color-primary);
        }

        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            display: inline-block;
            flex-shrink: 0;
        }

        .section-label.light {
            color: var(--color-accent);
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: #fff;
            transition: border-color 0.3s, box-shadow 0.3s;
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: rgba(31, 61, 43, 0.25);
        }

        .faq-item[open] {
            border-color: rgba(31, 61, 43, 0.35);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            list-style: none;
        }

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

        .faq-question .faq-icon {
            color: #999;
            transition: transform 0.3s;
            flex-shrink: 0;
            font-size: 14px;
        }

        .faq-item[open] .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-answer {
            padding: 0 20px 18px;
            color: var(--color-body);
            font-size: 15px;
            line-height: 1.8;
        }

        /* 移动菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 60;
            background: #FAF7F0;
            padding: 80px 24px 24px;
            flex-direction: column;
            gap: 12px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #F1EFEA;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: background 0.2s;
        }

        .mobile-menu-close:hover {
            background: #E3E0D8;
        }

        .mobile-menu .nav-link {
            font-size: 18px;
            padding: 14px;
            border-radius: 12px;
            display: block;
        }

        .mobile-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: background 0.2s;
        }

        .mobile-menu-btn:hover {
            background: #F0EFEA;
        }

        /* 移动端断点 */
        @media (max-width: 767px) {
            .nav-links {
                display: none;
            }

            .header-actions .search-box {
                display: none;
            }

            .mobile-menu-btn {
                display: inline-flex;
            }

            .page-hero {
                padding: 56px 0 48px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero p {
                font-size: 15px;
            }
        }

        /* 统计卡片 */
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: background 0.3s, transform 0.3s;
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* 页脚 */
        .site-footer {
            background: #14251B;
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 24px;
            margin-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .copyright {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .text-muted {
            color: var(--color-muted);
        }

/* roulang page: article */
:root {
  --primary: #1F3D2B;
  --primary-hover: #2C5242;
  --lime: #C6F24E;
  --lime-hover: #B5E63E;
  --bg-warm: #FAFAF7;
  --bg-alt: #F1EFEA;
  --bg-green-soft: #EAF2EC;
  --text-dark: #1A1A1A;
  --text-body: #444444;
  --text-muted: #777777;
  --text-light: #999999;
  --border-color: #E6E3DC;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  background-color: var(--bg-warm);
  color: var(--text-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s ease; }
button { font-family: inherit; }
a:focus-visible, button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(198,242,78,0.6);
}

.container-custom {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}
@media (min-width:1024px) {
  .container-custom { padding-left: 2rem; padding-right: 2rem; }
}
@media (max-width:640px) {
  .container-custom { padding-left: 1rem; padding-right: 1rem; }
}

.btn-cta {
  display: inline-flex; align-items: center; justify-content: center;
  height: 44px; padding: 0 24px; background: var(--primary); color: #fff;
  font-size: 15px; font-weight: 600; border-radius: 999px;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: all .25s ease;
}
.btn-cta:hover { background: var(--lime); color: var(--primary); border-color: var(--primary); transform: translateY(-1px); }
.btn-cta:active { transform: scale(.96); }

.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 28px; background: var(--primary); color: #fff;
  font-size: 16px; font-weight: 600; border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; transition: all .25s ease;
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 28px; background: transparent; color: var(--primary);
  font-size: 16px; font-weight: 600; border-radius: 999px;
  border: 1px solid #D6D2C9; cursor: pointer; transition: all .25s ease;
}
.btn-secondary:hover { border-color: var(--primary); background: rgba(31,61,43,.04); }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: #FAFAF7;
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 1rem; }
.brand-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; background: var(--primary); color: #fff;
  font-size: 18px; font-weight: 800; border-radius: 10px;
  box-shadow: inset 0 -2px 0 rgba(0,0,0,.1);
}
.brand-text { font-size: 19px; font-weight: 800; color: var(--primary); letter-spacing: -.3px; white-space: nowrap; }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-link {
  font-size: 15px; font-weight: 500; color: var(--text-body);
  padding: 8px 4px; position: relative; transition: color .2s;
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: 2px; background: var(--primary); border-radius: 2px;
}

.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.search-box {
  display: flex; align-items: center; gap: 8px;
  background: #F1EFEA; border: 1px solid transparent;
  border-radius: 999px; padding: 0 16px; height: 40px; width: 200px;
  transition: all .25s;
}
.search-box:focus-within { background: #fff; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(31,61,43,.15); }
.search-icon { color: var(--text-muted); font-size: 14px; }
.search-input { border: none; outline: none; background: transparent; font-size: 14px; color: var(--text-dark); width: 100%; }
.search-input::placeholder { color: var(--text-light); }

.menu-toggle { display: none; background: none; border: none; font-size: 22px; color: var(--primary); cursor: pointer; padding: 6px 10px; border-radius: 8px; }
.mobile-menu { display: none; background: #fff; border-bottom: 1px solid var(--border-color); padding: 16px 24px 24px; box-shadow: var(--shadow-md); }
.mobile-menu.open { display: block; }
.mobile-link { display: block; padding: 12px 0; font-size: 16px; color: var(--text-body); border-bottom: 1px solid #F1EFEA; font-weight: 500; }
.mobile-link:hover, .mobile-link.active { color: var(--primary); }
.mobile-search { display: flex; align-items: center; gap: 8px; background: #F1EFEA; border-radius: 999px; padding: 0 16px; height: 42px; margin-top: 16px; }
.mobile-search i { color: var(--text-muted); }
.mobile-search input { border: none; outline: none; background: transparent; width: 100%; font-size: 14px; }
.mobile-cta { width: 100%; margin-top: 14px; height: 44px; }

.hero-banner {
  position: relative; min-height: 280px;
  display: flex; align-items: center; justify-content: center; text-align: center;
  background-size: cover; background-position: center;
}
@media (max-width:640px) { .hero-banner { min-height: 220px; } }
.hero-banner-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(16,32,24,.78), rgba(31,61,43,.55));
}
.hero-banner-content { position: relative; z-index: 2; padding: 60px 24px; max-width: 900px; margin: 0 auto; }
.hero-banner h1 {
  font-size: 40px; font-weight: 900; color: #fff; letter-spacing: -.5px;
  line-height: 1.25; text-shadow: 0 2px 8px rgba(0,0,0,.3);
  word-break: break-word;
}
@media (max-width:768px) { .hero-banner h1 { font-size: 28px; } }
@media (max-width:520px) { .hero-banner h1 { font-size: 24px; } }
.hero-subtitle { margin-top: 14px; font-size: 16px; color: rgba(255,255,255,.85); max-width: 640px; margin-left: auto; margin-right: auto; line-height: 1.7; }

.hero-chip {
  display: inline-block; padding: 6px 16px; background: rgba(198,242,78,.16);
  color: rgba(255,255,255,.9); font-size: 13px; font-weight: 600;
  border-radius: 999px; border: 1px solid rgba(198,242,78,.35); margin-bottom: 18px;
  backdrop-filter: blur(4px);
}

.breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
  padding-top: 24px; padding-bottom: 8px; font-size: 14px; color: var(--text-light);
}
.breadcrumb a { color: var(--text-muted); transition: color .2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .separator { color: #C8C4BC; font-size: 12px; }
.breadcrumb .current { color: var(--text-body); max-width: 360px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.article-wrap { max-width: 820px; margin: 0 auto; }

.article-detail {
  background: #fff; border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
  padding: 48px; margin-top: 8px; margin-bottom: 8px;
}
@media (max-width:768px) { .article-detail { padding: 28px; } }
@media (max-width:520px) { .article-detail { padding: 20px; border-radius: 18px; } }

.article-meta {
  display: flex; align-items: center; flex-wrap: wrap; gap: 16px;
  padding-bottom: 24px; margin-bottom: 32px; border-bottom: 1px solid var(--border-color);
}
.article-category {
  display: inline-block; padding: 5px 14px; font-size: 12px; font-weight: 600;
  background: var(--bg-green-soft); color: var(--primary); border-radius: 999px;
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-muted); }
.meta-item i { font-size: 13px; }

.article-share { display: flex; align-items: center; gap: 10px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border-color); }
.article-share span { font-size: 14px; color: var(--text-muted); }
.share-btn {
  width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border-color);
  background: var(--bg-warm); color: var(--text-muted); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.share-btn:hover { border-color: var(--primary); color: var(--primary); background: #fff; }

.article-body { font-size: 17px; line-height: 1.9; color: var(--text-body); }
.article-body p { margin-bottom: 1.6em; }
.article-body h2 { font-size: 24px; font-weight: 800; color: var(--text-dark); margin: 40px 0 16px; letter-spacing: -.3px; }
.article-body h3 { font-size: 20px; font-weight: 700; color: var(--text-dark); margin: 32px 0 12px; }
.article-body ul, .article-body ol { margin: 0 0 1.6em 1.4em; }
.article-body li { margin-bottom: 8px; }
.article-body blockquote { border-left: 4px solid var(--primary); background: var(--bg-alt); padding: 16px 24px; border-radius: 0 12px 12px 0; margin: 24px 0; color: var(--text-muted); }
.article-body img { border-radius: 16px; margin: 24px 0; box-shadow: var(--shadow-sm); }
.article-body a { color: var(--primary); font-weight: 500; text-decoration: underline; text-decoration-color: rgba(31,61,43,.3); text-underline-offset: 3px; }
.article-body a:hover { text-decoration-color: var(--primary); }
.article-body code, .article-body pre, .article-body table { display: none; }

.empty-state { text-align: center; padding: 80px 24px; background: #fff; border: 1px dashed var(--border-color); border-radius: var(--radius-lg); }
.empty-icon { width: 72px; height: 72px; margin: 0 auto 20px; background: var(--bg-alt); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 28px; color: var(--text-light); }
.empty-state h2 { font-size: 24px; font-weight: 800; color: var(--text-dark); margin-bottom: 12px; }
.empty-state p { color: var(--text-muted); max-width: 420px; margin: 0 auto 24px; }

.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--border-color); }
@media (max-width:640px) { .post-nav { grid-template-columns: 1fr; } }
.post-nav-link { display: block; background: var(--bg-warm); border: 1px solid var(--border-color); border-radius: 16px; padding: 18px 22px; transition: all .25s ease; text-align: left; }
.post-nav-link:hover { border-color: var(--primary); background: #fff; box-shadow: var(--shadow-md); transform: translateY(-2px); }
.post-nav-link.text-right { text-align: right; }
.post-nav-link.disabled { opacity: .5; cursor: not-allowed; background: transparent; }
.post-nav-link.disabled:hover { transform: none; box-shadow: none; border-color: var(--border-color); background: var(--bg-warm); }
.post-nav-label { display: block; font-size: 13px; color: var(--text-light); margin-bottom: 6px; }
.post-nav-title { display: block; font-size: 15px; font-weight: 600; color: var(--text-dark); line-height: 1.5; }

.section { padding: 80px 0; }
@media (max-width:768px) { .section { padding: 56px 0; } }
.section-alt { background: var(--bg-alt); }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 40px; }
.section-heading h2 { font-size: 30px; font-weight: 800; color: var(--text-dark); letter-spacing: -.3px; }
@media (max-width:640px) { .section-heading h2 { font-size: 24px; } }
.section-heading p { font-size: 15px; color: var(--text-muted); }
.section-more { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.section-more:hover { gap: 10px; }

.related-card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg); overflow: hidden; transition: all .3s ease; height: 100%; display: flex; flex-direction: column; }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.related-card-image { position: relative; height: 180px; overflow: hidden; }
.related-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.related-card:hover .related-card-image img { transform: scale(1.05); }
.related-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.related-card-body h3 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; transition: color .2s; }
.related-card:hover .related-card-body h3 { color: var(--primary); }
.related-card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; flex: 1; }
.related-card-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); margin-top: 16px; transition: gap .2s; }
.related-card-link:hover { gap: 10px; }

.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: #fff; border: 1px solid var(--border-color); border-radius: 18px; overflow: hidden; transition: box-shadow .3s ease; }
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-question { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--text-dark); transition: color .2s; background: none; border: none; width: 100%; text-align: left; }
.faq-question span { flex: 1; }
.faq-question:hover { color: var(--primary); }
.faq-question i { color: var(--text-light); transition: transform .3s; font-size: 14px; flex-shrink: 0; }
.faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
.faq-answer { display: none; padding: 0 24px 22px; font-size: 15px; color: var(--text-muted); line-height: 1.8; }
.faq-item.open .faq-answer { display: block; }

.cta-section { background: var(--primary); border-radius: 28px; padding: 64px 48px; text-align: center; position: relative; overflow: hidden; }
@media (max-width:768px) { .cta-section { padding: 40px 24px; border-radius: 20px; } }
.cta-section::before { content: ""; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: rgba(198,242,78,.08); top: -120px; right: -80px; }
.cta-section::after { content: ""; position: absolute; width: 200px; height: 200px; border-radius: 50%; background: rgba(198,242,78,.05); bottom: -80px; left: 20px; }
.cta-section h2 { position: relative; z-index: 1; font-size: 32px; font-weight: 800; color: #fff; letter-spacing: -.3px; }
@media (max-width:768px) { .cta-section h2 { font-size: 24px; } }
.cta-section p { position: relative; z-index: 1; color: rgba(255,255,255,.8); font-size: 16px; max-width: 560px; margin: 16px auto 32px; }
.btn-lime { position: relative; z-index: 1; display: inline-flex; align-items: center; justify-content: center; height: 52px; padding: 0 36px; background: var(--lime); color: var(--primary); font-size: 16px; font-weight: 700; border-radius: 999px; border: none; cursor: pointer; transition: all .25s; box-shadow: 0 4px 16px rgba(198,242,78,.25); }
.btn-lime:hover { background: #d8ff6a; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(198,242,78,.35); }
.btn-lime:active { transform: scale(.96); }

.site-footer { background: #14251B; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.3fr; gap: 48px; padding-bottom: 48px; }
@media (max-width:1024px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width:520px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }
.footer-brand { display: flex; align-items: center; margin-bottom: 16px; }
.footer-brand .brand-icon { background: var(--lime); color: var(--primary); }
.footer-brand .brand-text { color: #fff; }
.footer-desc { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.6); max-width: 320px; }
.footer-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: rgba(255,255,255,.6); transition: color .2s; }
.footer-links a:hover { color: var(--lime); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; border-top: 1px solid rgba(255,255,255,.1); padding: 24px 0; }
.copyright { font-size: 13px; color: rgba(255,255,255,.4); }

@media (max-width:1024px) {
  .nav-links { display: none; }
  .search-box { display: none; }
  .header-actions .btn-cta { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-inner { height: 60px; }
}
@media (min-width:1025px) {
  .mobile-menu { display: none !important; }
}

/* roulang page: category2 */
:root {
            --primary: #1F3D2B;
            --primary-dark: #14251B;
            --primary-light: #2C5242;
            --accent: #C6F24E;
            --accent-dark: #A8D636;
            --bg: #FAF9F6;
            --card-bg: #FFFFFF;
            --text: #1A1A1A;
            --text-body: #444444;
            --text-muted: #777777;
            --text-light: #999999;
            --border: #E6E3DC;
            --border-light: #F1EFEA;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-full: 999px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.10);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 1024px) {
            .container-custom {
                padding: 0 20px;
            }
        }
        @media (max-width: 640px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(250, 250, 247, 0.96);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-xs);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 24px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 18px;
            letter-spacing: -0.5px;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 900;
            color: var(--primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: all .2s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: #F0EFEA;
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 700;
            background: rgba(31, 61, 43, 0.06);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--border-light);
            border-radius: var(--radius-full);
            padding: 0 16px;
            height: 38px;
            width: 180px;
            transition: all .25s ease;
        }
        .header-search .search-icon {
            font-size: 13px;
            color: var(--text-muted);
            margin-right: 8px;
        }
        .header-search input {
            flex: 1;
            width: 100%;
            font-size: 13px;
            color: var(--text);
            background: transparent;
        }
        .header-search input::placeholder {
            color: var(--text-light);
        }
        .header-search:focus-within {
            background: #fff;
            box-shadow: 0 0 0 2px var(--primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 14px;
            padding: 0 24px;
            height: 42px;
            transition: all .25s ease;
            cursor: pointer;
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-primary:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(198, 242, 78, 0.35);
        }
        .btn-accent:active {
            transform: scale(0.97);
        }
        .btn-outline {
            background: #fff;
            border: 1px solid #D6D2C9;
            color: var(--primary);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            background: var(--primary);
            color: #fff;
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .btn-ghost:hover {
            background: #fff;
            color: var(--primary-dark);
            border-color: #fff;
        }
        .btn-sm {
            height: 38px;
            padding: 0 22px;
            font-size: 13px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            cursor: pointer;
            gap: 5px;
            background: var(--border-light);
            transition: background .2s;
        }
        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all .3s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 20px 16px 24px;
            z-index: 99;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-nav-links {
            display: flex;
            flex-direction: column;
            gap: 2px;
            margin-bottom: 12px;
        }
        .mobile-nav-link {
            padding: 12px 14px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: background .2s;
        }
        .mobile-nav-link:hover {
            background: var(--border-light);
        }
        .mobile-nav-link.active {
            color: var(--primary);
            font-weight: 700;
            background: rgba(31, 61, 43, 0.06);
        }
        .mobile-search-box {
            display: flex;
            gap: 8px;
            align-items: center;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 6px 8px;
            margin-bottom: 12px;
        }
        .mobile-search-box input {
            flex: 1;
            height: 36px;
            padding: 0 12px;
            font-size: 14px;
            background: var(--border-light);
            border-radius: 999px;
            color: var(--text);
        }
        .mobile-search-box .btn {
            height: 36px;
            padding: 0 16px;
            font-size: 13px;
        }
        .mobile-cta {
            width: 100%;
        }
        @media (max-width: 1023px) {
            .nav-links {
                display: none;
            }
            .header-search {
                display: none;
            }
            .header-actions .btn-primary {
                display: none;
            }
            .hamburger {
                display: flex;
            }
        }
        @media (min-width: 1024px) {
            .mobile-menu {
                display: none !important;
            }
            .hamburger {
                display: none;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(16, 32, 24, 0.82), rgba(31, 61, 43, 0.68));
            z-index: -1;
        }
        .page-banner-content {
            padding: 64px 24px 56px;
            max-width: 800px;
            margin: 0 auto;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 18px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb-sep {
            color: rgba(255, 255, 255, 0.4);
            font-size: 12px;
        }
        .page-banner-title {
            font-size: 42px;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 12px;
        }
        .page-banner-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .page-banner {
                min-height: 220px;
            }
            .page-banner-content {
                padding: 48px 16px 40px;
            }
            .page-banner-title {
                font-size: 30px;
            }
            .page-banner-desc {
                font-size: 14px;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(31, 61, 43, 0.08);
            color: var(--primary);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 14px;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.3px;
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .section-head.light h2 {
            color: #fff;
        }
        .section-head.light p {
            color: rgba(255, 255, 255, 0.7);
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-head h2 {
                font-size: 26px;
            }
        }

        /* ===== Overview ===== */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .overview-left .section-tag {
            margin-bottom: 12px;
        }
        .overview-left h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .overview-left p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 24px;
        }
        .overview-right {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .feature-mini-card {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 20px 22px;
            transition: all .25s ease;
            box-shadow: var(--shadow-xs);
        }
        .feature-mini-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .feature-mini-card i {
            width: 42px;
            height: 42px;
            background: rgba(198, 242, 78, 0.25);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }
        .feature-mini-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .feature-mini-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 768px) {
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .overview-left h2 {
                font-size: 24px;
            }
        }

        /* ===== Guide Cards ===== */
        .section-guides {
            background: #fff;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .guides-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 24px;
            overflow: hidden;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-xs);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        .guide-image {
            position: relative;
            overflow: hidden;
            height: 160px;
        }
        .guide-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .guide-card:hover .guide-image img {
            transform: scale(1.06);
        }
        .guide-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
            box-shadow: var(--shadow-xs);
        }
        .guide-content {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-content h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .guide-content p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
            flex: 1;
        }
        .guide-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s;
        }
        .guide-link:hover {
            gap: 10px;
        }
        @media (max-width: 1024px) {
            .guides-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 560px) {
            .guides-grid {
                grid-template-columns: 1fr;
            }
            .guide-image {
                height: 180px;
            }
        }

        /* ===== Steps ===== */
        .section-steps {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .section-steps::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            background: rgba(198, 242, 78, 0.08);
            border-radius: 50%;
        }
        .section-steps::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            background: rgba(198, 242, 78, 0.06);
            border-radius: 50%;
        }
        .section-steps .container-custom {
            position: relative;
            z-index: 1;
        }
        .section-steps .section-tag {
            background: rgba(198, 242, 78, 0.15);
            color: var(--accent);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 24px;
            padding: 28px 22px;
            transition: all .3s ease;
            position: relative;
            backdrop-filter: blur(4px);
        }
        .step-card:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }
        .step-num {
            font-size: 32px;
            font-weight: 900;
            color: var(--accent);
            display: block;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            opacity: 0.9;
        }
        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Scenes ===== */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scene-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 32px 28px;
            text-align: center;
            transition: all .3s ease;
            box-shadow: var(--shadow-xs);
            position: relative;
            overflow: hidden;
        }
        .scene-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity .3s;
        }
        .scene-card:hover::before {
            opacity: 1;
        }
        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .scene-card i {
            width: 64px;
            height: 64px;
            background: rgba(31, 61, 43, 0.08);
            border-radius: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .scene-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .scene-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .scenes-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .scenes-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .section-faq {
            background: var(--border-light);
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            overflow: hidden;
            transition: all .3s ease;
            box-shadow: var(--shadow-xs);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            list-style: none;
            transition: background .2s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background: rgba(31, 61, 43, 0.03);
        }
        .faq-item[open] summary {
            border-bottom: 1px solid var(--border-light);
            background: rgba(31, 61, 43, 0.02);
        }
        .faq-q {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
        }
        .faq-item summary i {
            color: var(--text-light);
            font-size: 14px;
            transition: transform .3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item p {
            padding: 16px 24px 22px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }
        @media (max-width: 640px) {
            .faq-item summary {
                padding: 16px 18px;
            }
            .faq-q {
                font-size: 15px;
            }
            .faq-item p {
                padding: 14px 18px 18px;
                font-size: 13px;
            }
        }

        /* ===== CTA ===== */
        .section-cta {
            padding-top: 40px;
            padding-bottom: 80px;
        }
        .cta-box {
            background: var(--primary);
            background-image: radial-gradient(circle at 85% 20%, rgba(198, 242, 78, 0.15), transparent 50%), radial-gradient(circle at 10% 90%, rgba(198, 242, 78, 0.08), transparent 40%);
            border-radius: 32px;
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.3px;
            margin-bottom: 14px;
        }
        .cta-box p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .cta-buttons .btn {
            min-width: 140px;
        }
        @media (max-width: 768px) {
            .cta-box {
                padding: 48px 24px;
                border-radius: 24px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-box p {
                font-size: 14px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-brand .brand-icon {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .footer-brand .brand-text {
            color: #fff;
            font-size: 20px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a,
        .footer-links span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color .2s;
            line-height: 1.5;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .copyright {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }