/* roulang page: index */
:root {
            --tea-primary: #2d6a4f;
            --tea-primary-dark: #1f4735;
            --gold-accent: #d4a373;
            --bg-cream: #faf7f2;
            --text-ink: #1a202c;
            --text-weak: #6b7280;
            --border-light: #e5e0d5;
            --radius-card: 1rem;
            --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            background-color: var(--bg-cream);
            color: var(--text-ink);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        .section-padding {
            padding-top: 4.5rem;
            padding-bottom: 4.5rem;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.5rem;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-weak);
            line-height: 1.6;
            max-width: 720px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: var(--gold-accent);
            color: #1f4735;
            font-weight: 600;
            padding: 0.75rem 1.75rem;
            border-radius: 0.75rem;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(212, 163, 115, 0.35);
            border: 2px solid transparent;
        }

        .btn-primary:hover {
            background-color: #c4854f;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(196, 133, 79, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(196, 133, 79, 0.25);
        }

        .btn-primary:focus-visible,
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(45, 106, 79, 0.35);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: transparent;
            color: #ffffff;
            font-weight: 600;
            padding: 0.75rem 1.75rem;
            border-radius: 0.75rem;
            border: 2px solid rgba(255, 255, 255, 0.7);
            transition: all 0.25s ease;
        }

        .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.15);
            border-color: #ffffff;
            transform: translateY(-2px);
        }

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

        .btn-outline-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: transparent;
            color: var(--tea-primary);
            font-weight: 600;
            padding: 0.65rem 1.5rem;
            border-radius: 0.75rem;
            border: 2px solid var(--tea-primary);
            transition: all 0.25s ease;
        }

        .btn-outline-dark:hover {
            background-color: var(--tea-primary);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(45, 106, 79, 0.25);
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }

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

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: #4a5568;
            padding: 0.5rem 0.75rem;
            border-radius: 0.5rem;
            transition: all 0.2s ease;
            position: relative;
        }

        .nav-link:hover {
            color: var(--tea-primary);
            background-color: rgba(45, 106, 79, 0.06);
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0.75rem;
            right: 0.75rem;
            height: 2px;
            background-color: var(--tea-primary);
            border-radius: 1px;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background-color: #f1f0ec;
            border-radius: 9999px;
            padding: 0.35rem 0.75rem;
            border: 1px solid transparent;
            transition: all 0.2s ease;
        }

        .nav-search:focus-within {
            background-color: #ffffff;
            border-color: var(--tea-primary);
            box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.12);
        }

        .nav-search input {
            background: transparent;
            border: none;
            outline: none;
            font-size: 0.85rem;
            width: 100%;
            color: var(--text-ink);
        }

        .nav-search i {
            color: #9ca3af;
            font-size: 0.85rem;
            margin-right: 0.35rem;
        }

        /* Hero */
        .hero-wrap {
            position: relative;
            background-size: cover;
            background-position: center;
            min-height: 640px;
            display: flex;
            align-items: center;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(24, 59, 44, 0.92) 0%, rgba(24, 59, 44, 0.82) 45%, rgba(24, 59, 44, 0.55) 100%);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background-color: rgba(212, 163, 115, 0.18);
            border: 1px solid rgba(212, 163, 115, 0.45);
            color: #f0d4b3;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.3rem 0.9rem;
            border-radius: 9999px;
            letter-spacing: 0.02em;
        }

        .compare-card {
            background-color: rgba(255, 255, 255, 0.96);
            border-radius: 1rem;
            padding: 1.25rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
            border: 2px solid transparent;
        }

        .compare-card.featured {
            border-color: var(--gold-accent);
            background-color: #ffffff;
            box-shadow: 0 8px 30px rgba(212, 163, 115, 0.30);
            transform: scale(1.04);
            z-index: 2;
        }

        .compare-card.featured .featured-tag {
            position: absolute;
            top: -10px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--gold-accent);
            color: #1f4735;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.15rem 0.7rem;
            border-radius: 9999px;
            white-space: nowrap;
            letter-spacing: 0.03em;
        }

        .compare-card .price {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--tea-primary);
        }

        .compare-card.featured .price {
            color: var(--tea-primary);
            font-size: 1.75rem;
        }

        .compare-card .perks {
            font-size: 0.8rem;
            color: #6b7280;
            line-height: 1.6;
        }

        .compare-card .btn-sm {
            display: inline-block;
            padding: 0.4rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 0.5rem;
            background-color: var(--tea-primary);
            color: #ffffff;
            transition: all 0.2s ease;
        }

        .compare-card.featured .btn-sm {
            background-color: var(--gold-accent);
            color: #1f4735;
        }

        .compare-card .btn-sm:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(45, 106, 79, 0.2);
        }

        .compare-card.featured .btn-sm:hover {
            background-color: #c4854f;
        }

        /* 通用卡片 */
        .content-card {
            background-color: #ffffff;
            border-radius: 1rem;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            border: 1px solid var(--border-light);
        }

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

        .content-card .card-img {
            position: relative;
            overflow: hidden;
            height: 180px;
        }

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

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

        .content-card .card-body {
            padding: 1.1rem 1.25rem 1.25rem;
        }

        .content-card .card-title {
            font-size: 1rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 0.35rem;
        }

        .content-card .card-desc {
            font-size: 0.85rem;
            color: #6b7280;
            line-height: 1.5;
        }

        .content-card .card-meta {
            font-size: 0.78rem;
            color: #9ca3af;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-top: 0.5rem;
        }

        .badge-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.2rem 0.6rem;
            border-radius: 0.375rem;
            background-color: rgba(45, 106, 79, 0.08);
            color: var(--tea-primary);
        }

        /* 流程步骤 */
        .step-item {
            position: relative;
            padding-left: 3rem;
            padding-bottom: 2rem;
        }

        .step-item::before {
            content: '';
            position: absolute;
            left: 1.1rem;
            top: 2.2rem;
            bottom: 0;
            width: 2px;
            background-color: #e5e0d5;
        }

        .step-item:last-child::before {
            display: none;
        }

        .step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 2.4rem;
            height: 2.4rem;
            border-radius: 50%;
            background-color: var(--tea-primary);
            color: #ffffff;
            font-weight: 700;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(45, 106, 79, 0.2);
        }

        /* FAQ */
        .faq-item {
            background-color: #ffffff;
            border-radius: 0.75rem;
            border: 1px solid var(--border-light);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 1.25rem;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color 0.2s ease;
        }

        .faq-question:hover {
            background-color: rgba(45, 106, 79, 0.03);
        }

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

        .faq-question i {
            transition: transform 0.3s ease;
            color: #9ca3af;
            font-size: 0.85rem;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--tea-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            font-size: 0.88rem;
            color: #4a5568;
            line-height: 1.65;
            padding: 0 1.25rem;
        }

        .faq-item.open .faq-answer {
            padding-bottom: 1rem;
        }

        /* 评价卡 */
        .review-card {
            background-color: #ffffff;
            border-radius: 1rem;
            padding: 1.4rem;
            border: 1px solid var(--border-light);
            transition: all 0.3s ease;
        }

        .review-card:hover {
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .review-card .stars {
            color: var(--gold-accent);
            font-size: 0.85rem;
            letter-spacing: 0.1em;
        }

        .review-card .review-text {
            font-size: 0.88rem;
            color: #4a5568;
            line-height: 1.65;
            margin-top: 0.75rem;
        }

        .review-card .reviewer {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-top: 1rem;
        }

        .review-card .avatar {
            width: 2.25rem;
            height: 2.25rem;
            border-radius: 50%;
            background-color: var(--tea-primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .review-card .reviewer-info {
            font-size: 0.82rem;
        }

        .review-card .reviewer-info .name {
            font-weight: 600;
            color: var(--text-ink);
        }

        .review-card .reviewer-info .meta {
            color: #9ca3af;
            font-size: 0.75rem;
        }

        /* CTA */
        .cta-section {
            position: relative;
            background-size: cover;
            background-position: center;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(24, 59, 44, 0.95) 0%, rgba(45, 106, 79, 0.88) 100%);
        }

        .form-input {
            width: 100%;
            padding: 0.7rem 1rem;
            border-radius: 0.65rem;
            border: 1px solid var(--border-light);
            background-color: #ffffff;
            font-size: 0.9rem;
            transition: all 0.2s ease;
            color: var(--text-ink);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--tea-primary);
            box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.12);
        }

        /* 页脚 */
        .site-footer {
            background-color: #1f4735;
            color: rgba(255, 255, 255, 0.8);
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s ease;
        }

        .site-footer a:hover {
            color: #f0d4b3;
        }

        .footer-link {
            font-size: 0.88rem;
            padding: 0.15rem 0;
            display: inline-block;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .section-padding {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .hero-wrap {
                min-height: auto;
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }

            .compare-card.featured {
                transform: scale(1);
            }

            .mobile-menu {
                display: none;
            }

            .mobile-menu.open {
                display: block;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background-color: #ffffff;
                z-index: 99;
                padding: 5rem 1.5rem 2rem;
                overflow-y: auto;
            }
        }

        @media (min-width: 769px) {
            .mobile-menu {
                display: flex !important;
            }

            .mobile-toggle {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .btn-primary,
            .btn-secondary {
                padding: 0.6rem 1.25rem;
                font-size: 0.9rem;
            }

            .compare-card {
                padding: 0.9rem;
            }

            .compare-card .price {
                font-size: 1.2rem;
            }
        }

/* roulang page: category2 */
:root {
            --tea-primary: #2c774e;
            --tea-deep: #193f2d;
            --tea-light: #f0f7f2;
            --gold: #e8b64d;
            --text-main: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 14px;
            --shadow-sm: 0 2px 8px rgba(15, 42, 30, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 42, 30, 0.1);
            --transition: all 0.3s ease;
        }
        html { scroll-behavior: smooth; }
        body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--text-main); background: #fff; line-height: 1.7; }
        .container-custom { max-width: 1200px; margin: 0 auto; padding-left: 1.25rem; padding-right: 1.25rem; }
        .site-header { background: rgba(255,255,255,0.96); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(226,232,240,0.7); position: sticky; top: 0; z-index: 100; transition: box-shadow 0.3s ease; }
        .site-header.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.05); }
        .nav-link { padding: 0.5rem 1rem; font-size: 0.95rem; font-weight: 500; color: #475569; border-radius: 8px; transition: var(--transition); position: relative; }
        .nav-link:hover { color: var(--tea-primary); background: var(--tea-light); }
        .nav-link.active { color: var(--tea-primary); font-weight: 600; background: rgba(44,119,78,0.08); }
        .nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 2.5px; border-radius: 2px; background: var(--tea-primary); }
        .nav-search { display: flex; align-items: center; gap: 0.4rem; background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 999px; padding: 0.4rem 0.9rem; transition: var(--transition); }
        .nav-search:focus-within { border-color: var(--tea-primary); box-shadow: 0 0 0 3px rgba(44,119,78,0.12); background: #fff; }
        .nav-search i { color: #94a3b8; font-size: 0.85rem; }
        .nav-search input { border: none; outline: none; background: transparent; font-size: 0.85rem; width: 100%; color: var(--text-main); }
        .btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem; background: var(--tea-primary); color: #fff; padding: 0.7rem 1.6rem; border-radius: 999px; font-weight: 600; font-size: 0.95rem; transition: var(--transition); border: none; cursor: pointer; }
        .btn-primary:hover { background: var(--tea-deep); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(44,119,78,0.3); }
        .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 10px rgba(44,119,78,0.2); }
        .btn-outline { display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem; background: transparent; color: var(--tea-primary); border: 1.5px solid var(--tea-primary); padding: 0.65rem 1.5rem; border-radius: 999px; font-weight: 600; font-size: 0.95rem; transition: var(--transition); cursor: pointer; }
        .btn-outline:hover { background: var(--tea-light); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(44,119,78,0.15); }
        .mobile-menu { display: none; border-top: 1px solid var(--border); background: #fff; }
        .mobile-menu.open { display: block; }
        .site-footer { background: var(--tea-deep); color: rgba(255,255,255,0.7); }
        .footer-link { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: var(--transition); cursor: default; }
        .footer-link:hover { color: var(--gold); }
        .badge { display: inline-flex; align-items: center; gap: 0.3rem; padding: 0.22rem 0.8rem; border-radius: 999px; font-size: 0.8rem; font-weight: 600; }
        .stat-card { background: #fff; border-radius: var(--radius); padding: 1.5rem; text-align: center; border: 1px solid var(--border); transition: var(--transition); box-shadow: var(--shadow-sm); }
        .stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(44,119,78,0.2); }
        .section-title { font-size: 2rem; font-weight: 700; color: #0f172a; line-height: 1.3; letter-spacing: -0.01em; }
        .section-subtitle { font-size: 1.05rem; color: var(--text-weak); line-height: 1.7; }
        .card-hover { transition: var(--transition); }
        .card-hover:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
        .step-num { width: 2.5rem; height: 2.5rem; border-radius: 50%; background: var(--tea-light); color: var(--tea-primary); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1rem; flex-shrink: 0; }
        .faq-item { border: 1px solid var(--border); border-radius: var(--radius); padding: 1.3rem 1.6rem; background: #fff; transition: var(--transition); }
        .faq-item:hover { border-color: rgba(44,119,78,0.3); box-shadow: var(--shadow-sm); }
        .faq-icon { color: var(--tea-primary); font-size: 1.2rem; flex-shrink: 0; }
        .input-field { width: 100%; background: #f8fafc; border: 1px solid var(--border); border-radius: 10px; padding: 0.85rem 1.1rem; font-size: 0.95rem; transition: var(--transition); color: var(--text-main); outline: none; }
        .input-field:focus { border-color: var(--tea-primary); box-shadow: 0 0 0 3px rgba(44,119,78,0.12); background: #fff; }
        .input-field::placeholder { color: #94a3b8; }
        .hero-bg { background: linear-gradient(135deg, #f8fcf9 0%, #eaf5ee 55%, #dcedde 100%); position: relative; overflow: hidden; }
        .hero-bg::before { content: ''; position: absolute; top: -80px; right: -60px; width: 380px; height: 380px; background: radial-gradient(circle, rgba(44,119,78,0.06) 0%, transparent 70%); border-radius: 50%; }
        .hero-bg::after { content: ''; position: absolute; bottom: -100px; left: -40px; width: 320px; height: 320px; background: radial-gradient(circle, rgba(232,182,77,0.07) 0%, transparent 70%); border-radius: 50%; }
        .metrics-band { background: var(--tea-deep); }
        .matrix-card { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); background: #fff; }
        .matrix-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .compare-row { border-bottom: 1px solid var(--border); padding: 0.9rem 0; }
        .compare-row:last-child { border-bottom: none; }
        .cta-section { background: var(--tea-deep); position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; top: 0; right: 0; width: 300px; height: 300px; background: radial-gradient(circle, rgba(232,182,77,0.08) 0%, transparent 70%); }
        .theme-icon { background: var(--tea-light); color: var(--tea-primary); border-radius: 12px; width: 3rem; height: 3rem; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; transition: var(--transition); }
        .matrix-card:hover .theme-icon { background: var(--tea-primary); color: #fff; transform: scale(1.05); }
        .section-padding { padding: 5rem 0; }
        @media (max-width: 1024px) {
            .section-title { font-size: 1.75rem; }
            .section-padding { padding: 4rem 0; }
        }
        @media (max-width: 768px) {
            .section-title { font-size: 1.5rem; }
            .section-padding { padding: 3.5rem 0; }
            .container-custom { padding-left: 1rem; padding-right: 1rem; }
        }
        @media (max-width: 520px) {
            .section-title { font-size: 1.35rem; }
            .hero-title { font-size: 1.75rem !important; }
            .stat-card { padding: 1rem; }
            .input-field { font-size: 0.9rem; }
        }
        .focus-outline:focus-visible { outline: 2px solid var(--tea-primary); outline-offset: 2px; }
        a, button, input { transition: var(--transition); }
        .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .reveal.visible { opacity: 1; transform: translateY(0); }

/* roulang page: category1 */
:root {
            --tea-50: #f0f7f2;
            --tea-100: #dcefe2;
            --tea-600: #2c7345;
            --tea-700: #255c39;
            --tea-800: #1e4a2e;
            --gold-300: #d4a843;
            --gold-500: #b8860b;
            --bg: #f9f7f4;
            --surface: #ffffff;
            --text: #2d2a26;
            --text-light: #6b6b6b;
            --border: #e8e2d8;
            --radius: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 0.85rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: #4a4a4a;
            border-radius: 0.5rem;
            transition: all 0.2s ease;
        }
        .nav-link:hover {
            background: var(--tea-50);
            color: var(--tea-700);
        }
        .nav-link.active {
            background: var(--tea-50);
            color: var(--tea-700);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            display: block;
            height: 2px;
            background: var(--tea-600);
            border-radius: 2px;
            margin-top: 2px;
            position: absolute;
            bottom: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 0.85rem;
            background: #f5f5f5;
            border-radius: 999px;
            border: 1px solid transparent;
            transition: all 0.2s ease;
        }
        .nav-search:focus-within {
            background: #fff;
            border-color: var(--tea-200);
            box-shadow: 0 0 0 3px rgba(44, 115, 69, 0.1);
        }
        .nav-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.85rem;
            width: 100%;
            color: var(--text);
        }
        .nav-search i {
            color: #999;
            font-size: 0.85rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--tea-600), var(--tea-700));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.65rem 1.25rem;
            border-radius: 0.6rem;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            box-shadow: 0 2px 8px rgba(44, 115, 69, 0.2);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(44, 115, 69, 0.3);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(44, 115, 69, 0.2);
        }
        .btn-primary:focus-visible,
        .nav-link:focus-visible,
        .faq-question:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--tea-500);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border: 1.5px solid var(--tea-200);
            color: var(--tea-700);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.6rem 1.25rem;
            border-radius: 0.6rem;
            background: rgba(255, 255, 255, 0.85);
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .btn-outline:hover {
            border-color: var(--tea-600);
            background: var(--tea-50);
            transform: translateY(-2px);
        }
        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }
        /* Hero */
        .hero-invite {
            position: relative;
            background: linear-gradient(135deg, rgba(20, 42, 32, 0.93) 0%, rgba(36, 76, 55, 0.82) 100%), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 0.35rem 0.9rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            color: var(--gold-300);
        }
        .hero-invite h1 {
            font-size: clamp(1.9rem, 4vw, 2.8rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin: 1rem 0 0.75rem;
        }
        .hero-invite .hero-sub {
            color: rgba(255, 255, 255, 0.78);
            font-size: 1.05rem;
            max-width: 34rem;
            line-height: 1.7;
        }
        .invite-card {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: var(--radius);
            padding: 1.25rem 1.5rem;
            margin-top: 1.75rem;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            max-width: 30rem;
        }
        .invite-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 0.6rem;
        }
        .invite-card-header span:first-child {
            font-size: 0.9rem;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.9);
        }
        .invite-card-header span:last-child {
            font-size: 0.9rem;
            font-weight: 800;
            color: var(--gold-300);
        }
        .progress-track {
            height: 8px;
            background: rgba(255, 255, 255, 0.18);
            border-radius: 999px;
            overflow: hidden;
        }
        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #d4a843, #b8860b);
            border-radius: 999px;
            transition: width 0.8s ease;
        }
        .invite-card p {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 0.6rem;
        }
        .hero-visual {
            position: relative;
        }
        .hero-visual .hero-image-wrap {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
        }
        .hero-visual img {
            height: 100%;
            min-height: 320px;
            object-fit: cover;
            width: 100%;
        }
        .hero-visual-card {
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 16px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 12px;
            padding: 1rem 1.25rem;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }
        .hero-visual-card h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--tea-800);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .hero-visual-card ul {
            list-style: none;
        }
        .hero-visual-card li {
            font-size: 0.82rem;
            color: var(--text);
            padding: 0.2rem 0;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .hero-visual-card li i {
            color: var(--tea-600);
            font-size: 0.75rem;
        }
        /* Section headings */
        .section-head {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            color: var(--tea-800);
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-top: 0.4rem;
            max-width: 38rem;
            margin-left: auto;
            margin-right: auto;
        }
        /* Metrics */
        .metrics-section {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .metric-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.75rem 1.25rem;
            text-align: center;
            transition: all 0.3s ease;
        }
        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--tea-200);
        }
        .metric-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--tea-700);
            line-height: 1.1;
            background: linear-gradient(135deg, var(--tea-700), var(--tea-500));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .metric-label {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 0.4rem;
            font-weight: 500;
        }
        /* Modules */
        .guide-modules {
            background: var(--bg);
        }
        .module-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .module-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--tea-200);
        }
        .module-card img {
            height: 160px;
            width: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .module-card:hover img {
            transform: scale(1.04);
        }
        .module-card-content {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .module-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--tea-50);
            color: var(--tea-700);
            font-size: 1.05rem;
            margin-bottom: 0.8rem;
        }
        .module-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--tea-800);
            margin-bottom: 0.5rem;
        }
        .module-card p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.65;
            flex: 1;
        }
        .module-link {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            color: var(--tea-600);
            font-size: 0.85rem;
            font-weight: 600;
            margin-top: 1rem;
            transition: gap 0.2s ease;
        }
        .module-link:hover {
            gap: 0.5rem;
            color: var(--tea-700);
        }
        /* Comparison */
        .comparison-section {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .comparison-card {
            border-radius: var(--radius);
            padding: 1.75rem 1.75rem;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        .comparison-card.without {
            background: #fafafa;
        }
        .comparison-card.with {
            background: var(--tea-50);
            border-color: var(--tea-200);
        }
        .comparison-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .comparison-card.without h3 {
            color: #888;
        }
        .comparison-card.with h3 {
            color: var(--tea-700);
        }
        .comparison-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.65rem;
        }
        .comparison-card li {
            font-size: 0.88rem;
            color: var(--text);
            line-height: 1.6;
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
        }
        .comparison-card li i {
            font-size: 0.85rem;
            margin-top: 0.2rem;
        }
        .comparison-card.without li i {
            color: #ccc;
        }
        .comparison-card.with li i {
            color: var(--tea-600);
        }
        /* FAQ */
        .faq-section {
            background: var(--bg);
        }
        .faq-list {
            max-width: 46rem;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .faq-item.active {
            border-color: var(--tea-200);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 1.05rem 1.25rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--tea-700);
        }
        .faq-question i {
            color: var(--tea-600);
            font-size: 0.8rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 1.25rem 1.1rem;
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 0.75rem;
            margin-top: 0;
        }
        /* CTA */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, rgba(20, 42, 32, 0.96) 0%, rgba(36, 76, 55, 0.9) 100%), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            color: #fff;
        }
        .cta-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 2rem;
            box-shadow: var(--shadow-lg);
            max-width: 32rem;
            margin: 0 auto;
            border: 1px solid var(--border);
        }
        .cta-card label {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.25rem;
            display: block;
        }
        .cta-card input,
        .cta-card select {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 0.6rem 0.85rem;
            font-size: 0.9rem;
            background: #fff;
            color: var(--text);
            transition: border-color 0.2s, box-shadow 0.2s;
            margin-bottom: 0.9rem;
        }
        .cta-card input:focus,
        .cta-card select:focus {
            outline: none;
            border-color: var(--tea-500);
            box-shadow: 0 0 0 3px rgba(44, 115, 69, 0.12);
        }
        .cta-card .btn-primary {
            width: 100%;
            padding: 0.75rem;
            font-size: 0.95rem;
            margin-top: 0.4rem;
        }
        .cta-card .form-tip {
            font-size: 0.75rem;
            color: #999;
            text-align: center;
            margin-top: 0.8rem;
        }
        /* Footer */
        .site-footer {
            background: #152a20;
            color: rgba(255, 255, 255, 0.85);
        }
        .footer-link {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            transition: color 0.2s ease;
            display: inline-flex;
            align-items: center;
        }
        .footer-link:hover {
            color: #fff;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-invite .container-custom {
                grid-template-columns: 1fr;
            }
            .hero-visual {
                margin-top: 2rem;
            }
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .metric-number {
                font-size: 1.9rem;
            }
            .cta-card {
                padding: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .hero-invite h1 {
                font-size: 1.7rem;
            }
            .hero-invite .hero-sub {
                font-size: 0.95rem;
            }
            .invite-card {
                padding: 1rem 1.1rem;
            }
            .module-card img {
                height: 140px;
            }
            .section-head h2 {
                font-size: 1.35rem;
            }
            .cta-card {
                padding: 1.25rem;
            }
        }