:root {
            --primary: #2c1810;
            --primary-dark: #1a0f0a;
            --primary-light: #4a2c1a;
            --gold: #c9a961;
            --gold-light: #e8d5a3;
            --gold-dark: #a8853e;
            --cream: #faf7f2;
            --card: #ffffff;
            --text-dark: #1f2937;
            --text-muted: #6b7280;
            --border: #e5e0d8;
            --radius: 12px;
            --shadow-sm: 0 2px 8px rgba(44, 24, 16, 0.06);
            --shadow-md: 0 4px 20px rgba(44, 24, 16, 0.08);
            --shadow-lg: 0 12px 40px rgba(44, 24, 16, 0.12);
            --transition: all 0.3s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--cream);
            color: var(--text-dark);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航 */
        .nav-wrapper {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(201, 169, 97, 0.2);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--transition);
        }
        .nav-wrapper.scrolled {
            box-shadow: 0 4px 20px rgba(44, 24, 16, 0.08);
        }
        .logo-text {
            font-family: 'Noto Serif SC', serif;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
        }
        .logo-text span {
            color: var(--gold-dark);
        }
        .nav-link {
            color: var(--text-dark);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--gold-dark);
            background: rgba(201, 169, 97, 0.08);
        }

        /* 按钮 */
        .btn-primary {
            background: linear-gradient(135deg, var(--gold), var(--gold-dark));
            color: #fff;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(201, 169, 97, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(201, 169, 97, 0.4);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            border: 2px solid var(--gold);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline:hover {
            background: rgba(201, 169, 97, 0.08);
            border-color: var(--gold-dark);
            color: var(--gold-dark);
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(135deg, #2c1810 0%, #3e241a 50%, #4a2c1a 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 42px;
            line-height: 1.3;
            font-weight: 700;
            color: #fff;
        }
        .hero-subtitle {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            line-height: 1.8;
            max-width: 560px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 169, 97, 0.15);
            border: 1px solid rgba(201, 169, 97, 0.4);
            color: var(--gold-light);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
        }
        .stat-number {
            font-family: 'Noto Serif SC', serif;
            font-size: 32px;
            font-weight: 700;
            color: var(--gold);
            line-height: 1.2;
        }
        .stat-label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            margin-top: 4px;
        }

        /* 白皮书封面 */
        .guide-cover {
            background: linear-gradient(145deg, #faf7f2, #f0e9df);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.3);
            position: relative;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .guide-cover::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, var(--gold), var(--gold-light), var(--gold-dark));
            border-radius: 16px 16px 0 0;
        }
        .guide-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
        }
        .guide-dir-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px dashed #e0d8cc;
            font-size: 14px;
            color: #4b5563;
        }

        /* 表单 */
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #e0d8cc;
            border-radius: 10px;
            background: #faf7f2;
            font-size: 15px;
            color: var(--text-dark);
            transition: var(--transition);
            outline: none;
        }
        .form-input:focus {
            border-color: var(--gold);
            box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.15);
            background: #fff;
        }

        /* 板块 */
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--gold-dark);
            background: rgba(201, 169, 97, 0.1);
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: 1px;
        }
        .section-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 16px;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
            max-width: 720px;
        }

        /* 卡片 */
        .card {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid rgba(44, 24, 16, 0.04);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        /* 竖屏卡片 */
        .portrait-card {
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-md);
        }
        .portrait-card img {
            aspect-ratio: 3 / 4;
            object-fit: cover;
            width: 100%;
            transition: transform 0.5s ease;
        }
        .portrait-card:hover img {
            transform: scale(1.05);
        }
        .portrait-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
            color: #fff;
        }

        /* 排行列表 */
        .rank-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: #fff;
            border-radius: 14px;
            border: 1px solid rgba(44, 24, 16, 0.05);
            transition: var(--transition);
        }
        .rank-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
            border-color: rgba(201, 169, 97, 0.3);
        }
        .rank-number {
            font-family: 'Noto Serif SC', serif;
            font-size: 28px;
            font-weight: 700;
            color: #d1d5db;
            min-width: 48px;
        }
        .rank-item:nth-child(1) .rank-number {
            color: #c9a961;
        }
        .rank-item:nth-child(2) .rank-number {
            color: #9ca3af;
        }
        .rank-item:nth-child(3) .rank-number {
            color: #d97757;
        }

        /* 评价卡片 */
        .review-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(44, 24, 16, 0.05);
            transition: var(--transition);
        }
        .review-card:hover {
            box-shadow: var(--shadow-md);
        }
        .stars {
            color: #f59e0b;
            font-size: 14px;
            letter-spacing: 2px;
        }

        /* 资讯 */
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 16px 0;
            border-bottom: 1px solid rgba(44, 24, 16, 0.06);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-date {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            min-width: 60px;
        }

        /* FAQ */
        .faq-item {
            background: #fff;
            border-radius: 14px;
            border: 1px solid rgba(44, 24, 16, 0.06);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item summary {
            cursor: pointer;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--primary);
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item[open] {
            box-shadow: var(--shadow-md);
        }
        .faq-item[open] summary {
            border-bottom: 1px solid rgba(44, 24, 16, 0.06);
        }
        .faq-answer {
            padding: 16px 24px 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* Footer */
        .footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 24px;
        }
        .footer-title {
            font-family: 'Noto Serif SC', serif;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
        }
        .footer-link {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            display: block;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-link:hover {
            color: var(--gold);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            margin-top: 40px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* FAQ chevron 动画 */
        .faq-item summary i {
            transition: transform 0.3s ease;
        }
        .faq-item[open] summary i {
            transform: rotate(180deg);
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .hero-title {
                font-size: 30px;
            }
            .section-title {
                font-size: 26px;
            }
            .hero-section {
                padding: 60px 0;
            }
            .guide-cover {
                padding: 28px;
            }
            .rank-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .section-desc {
                font-size: 15px;
            }
            .container-custom {
                padding: 0 16px;
            }
            .guide-cover {
                padding: 20px;
            }
            .stat-number {
                font-size: 26px;
            }
        }