:root {
            --color-primary: #8B5E3C;
            --color-secondary: #5F8D7A;
            --color-accent: #B98A44;
            --color-bg: #F7F5F2;
            --color-card: #FFFFFF;
            --color-heading: #1C1917;
            --color-body: #44403C;
            --color-muted: #78716C;
            --color-border: #E7E5E4;
            --color-divider: #F0EFED;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
        }
        html {
            scroll-behavior: smooth;
        }
        * {
            box-sizing: border-box;
        }
        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background: var(--color-bg);
            color: var(--color-body);
            line-height: 1.7;
        }
        .container-site {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 16px;
            padding-right: 16px;
        }
        .font-serif-cn {
            font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .link-underline {
            position: relative;
        }
        .link-underline::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width 0.3s ease;
        }
        .link-underline:hover::after {
            width: 100%;
        }
        .input-base {
            width: 100%;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            padding: 10px 14px;
            font-size: 14px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            background: #fff;
            outline: none;
        }
        .input-base:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 2px rgba(139, 94, 60, 0.25);
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border-radius: 8px;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 600;
            transition: background 0.2s ease, transform 0.15s ease;
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 8px 20px;
            font-size: 14px;
            color: var(--color-body);
            transition: border-color 0.2s, color 0.2s;
            cursor: pointer;
        }
        .btn-secondary:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .tag-pill {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            background: #F0EFED;
            color: var(--color-muted);
            transition: background 0.2s, color 0.2s;
            cursor: pointer;
            border: none;
        }
        .tag-pill:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .badge {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-hot {
            background: #FEF3E2;
            color: #B45309;
        }
        .badge-top {
            background: #F1F5F0;
            color: #3F6B52;
        }
        .badge-new {
            background: #EFF6FF;
            color: #1D4ED8;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-icon {
            transition: transform 0.3s ease;
            display: inline-block;
            font-size: 20px;
            line-height: 1;
        }
        .region-dropdown {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            z-index: 50;
            min-width: 220px;
            padding: 8px;
        }
        .region-dropdown.show {
            display: block;
        }
        .region-dropdown a {
            display: block;
            padding: 8px 12px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--color-body);
            text-decoration: none;
            transition: background 0.2s;
        }
        .region-dropdown a:hover {
            background: #F7F5F2;
            color: var(--color-primary);
        }
        .progress-bar {
            height: 6px;
            border-radius: 999px;
            background: #F0EFED;
            overflow: hidden;
        }
        .progress-bar-fill {
            height: 100%;
            border-radius: 999px;
            background: var(--color-primary);
            transition: width 0.6s ease;
        }
        .divider {
            height: 1px;
            background: var(--color-divider);
        }
        .section-padding {
            padding-top: 48px;
            padding-bottom: 48px;
        }
        @media (min-width: 768px) {
            .section-padding {
                padding-top: 64px;
                padding-bottom: 64px;
            }
        }
        .nav-link {
            position: relative;
            color: var(--color-body);
            text-decoration: none;
            font-size: 14px;
            padding: 4px 2px;
            transition: color 0.2s;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .search-wrapper:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 2px rgba(139, 94, 60, 0.15);
        }
        .cover-img {
            object-fit: cover;
            width: 100%;
            height: 100%;
        }
        .img-hover-scale {
            overflow: hidden;
        }
        .img-hover-scale img {
            transition: transform 0.4s ease;
        }
        .img-hover-scale:hover img {
            transform: scale(1.02);
        }
        .avatar {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 999px;
            background: #E8DCCF;
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
        }
        @media (max-width: 767px) {
            .mobile-search-row {
                display: flex;
                width: 100%;
                padding: 8px 16px 12px;
            }
            .desktop-category-row {
                display: none;
            }
        }
        @media (min-width: 768px) {
            .mobile-search-row {
                display: none;
            }
        }
        .hero-thread-card {
            background: linear-gradient(135deg, #FAF8F5 0%, #F0ECE7 100%);
            border: 1px solid var(--color-border);
            border-radius: 16px;
        }
        .stat-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: box-shadow 0.3s, border-color 0.3s;
            position: relative;
            overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
            opacity: 0;
            transition: opacity 0.3s;
        }
        .stat-card:hover::before {
            opacity: 1;
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
        }
        .region-row {
            display: flex;
            align-items: center;
            padding: 14px 16px;
            border-bottom: 1px solid var(--color-divider);
            transition: background 0.2s;
            text-decoration: none;
            color: var(--color-body);
        }
        .region-row:last-child {
            border-bottom: none;
        }
        .region-row:hover {
            background: #FAFAF9;
        }
        .region-row:hover .region-arrow {
            transform: translateX(4px);
        }
        .region-arrow {
            transition: transform 0.3s ease;
        }
        .compare-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 16px;
            padding: 24px;
            transition: box-shadow 0.3s;
        }
        .compare-card:hover {
            box-shadow: var(--shadow-md);
        }
        .news-list-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid var(--color-divider);
            text-decoration: none;
            color: var(--color-body);
            transition: color 0.2s;
        }
        .news-list-item:hover {
            color: var(--color-primary);
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .form-section-bg {
            background: linear-gradient(135deg, #FAF8F5, #F0EBE6);
            border-radius: 20px;
        }
        .footer-bg {
            background: #1C1917;
            color: #A8A29E;
        }
        .footer-bg a {
            color: #A8A29E;
            transition: color 0.2s;
        }
        .footer-bg a:hover {
            color: #D6C5B3;
        }
        .logo-text {
            font-family: 'Noto Serif SC', 'Songti SC', serif;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-heading);
            letter-spacing: 0.02em;
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 16px;
            }
            .container-site {
                padding-left: 12px;
                padding-right: 12px;
            }
        }