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

:root {
    --primary: #2d6a4f;
    --primary-light: #40916c;
    --accent: #d4a373;
    --bg: #f8f9f5;
    --white: #ffffff;
    --gray-100: #f1f3f0;
    --gray-200: #e0e3dd;
    --gray-600: #6b7280;
    --gray-800: #1f2937;
    --radius: 10px;
    --shadow: 0 2px 12px rgba(0,0,0,0.06);
    --transition: all 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--gray-800);
    line-height: 1.8;
    font-size: 16px;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; display: block; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== Header ========== */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    padding: 14px 20px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary) !important;
    white-space: nowrap;
}

.nav {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.nav a {
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--gray-600) !important;
    font-weight: 500;
}

.nav a:hover,
.nav a.active {
    background: var(--gray-100);
    color: var(--primary) !important;
}

/* ========== Banner ========== */
.banner {
    background: linear-gradient(135deg, #2d6a4f 0%, #40916c 50%, #52b788 100%);
    color: white;
    text-align: center;
    padding: 60px 20px;
    margin-bottom: 30px;
}

.banner h1 {
    font-size: 36px;
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.banner p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 6px;
}

.banner-sub {
    font-size: 14px !important;
    opacity: 0.7 !important;
    margin-top: 8px;
}

/* ========== Section ========== */
.section {
    margin: 40px 0;
}

.section-title {
    font-size: 22px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--gray-200);
    color: var(--gray-800);
}

/* ========== Category Grid ========== */
.cat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.cat-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.cat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.cat-card h3 {
    margin-bottom: 4px;
}

.cat-card h3 a {
    color: var(--gray-800) !important;
    font-size: 18px;
}

.cat-count {
    display: inline-block;
    font-size: 12px;
    color: var(--gray-600);
    background: var(--gray-100);
    padding: 2px 10px;
    border-radius: 20px;
    margin-bottom: 12px;
}

.cat-card ul {
    list-style: none;
}

.cat-card li {
    padding: 6px 0;
    border-bottom: 1px dashed var(--gray-200);
}

.cat-card li:last-child {
    border-bottom: none;
}

.cat-card li a {
    font-size: 14px;
    color: var(--gray-600) !important;
}

.cat-card li a:hover {
    color: var(--primary) !important;
}

/* ========== Article List ========== */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.article-item {
    display: flex;
    gap: 20px;
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.article-item:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.article-thumb {
    flex-shrink: 0;
    width: 200px;
    height: 140px;
    overflow: hidden;
    border-radius: 8px;
    background: var(--gray-100);
}

.article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-info {
    flex: 1;
    min-width: 0;
}

.article-info h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.article-info h3 a {
    color: var(--gray-800) !important;
}

.article-info h3 a:hover {
    color: var(--primary) !important;
}

.article-desc {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    font-size: 13px;
    color: var(--gray-600);
    display: flex;
    gap: 16px;
}

.meta-cat {
    color: var(--primary);
    font-weight: 500;
}

/* ========== Hot List ========== */
.hot-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hot-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--white);
    padding: 14px 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    color: var(--gray-800) !important;
    transition: var(--transition);
}

.hot-item:hover {
    background: var(--primary);
    color: white !important;
}

.hot-views {
    font-size: 13px;
    color: var(--gray-600);
    flex-shrink: 0;
}

.hot-item:hover .hot-views {
    color: rgba(255,255,255,0.7);
}

/* ========== Article Detail ========== */
.breadcrumb {
    padding: 16px 0;
    font-size: 14px;
    color: var(--gray-600);
}

.breadcrumb a { color: var(--gray-600); }
.breadcrumb a:hover { color: var(--primary); }

.page-title {
    font-size: 28px;
    margin-bottom: 30px;
    color: var(--gray-800);
}

.article-detail {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.article-detail h1 {
    font-size: 28px;
    margin-bottom: 16px;
    line-height: 1.4;
}

.article-meta-detail {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 20px;
    display: flex;
    gap: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-200);
}

.article-cover {
    margin-bottom: 24px;
    border-radius: 8px;
    overflow: hidden;
}

.article-cover img {
    width: 100%;
}

.article-content {
    font-size: 16px;
    line-height: 2;
    color: var(--gray-800);
}

.article-content h2 {
    font-size: 22px;
    margin: 30px 0 16px;
    padding-left: 12px;
    border-left: 4px solid var(--primary);
}

.article-content h3 {
    font-size: 18px;
    margin: 24px 0 12px;
}

.article-content p {
    margin-bottom: 16px;
}

.article-content ul,
.article-content ol {
    margin: 12px 0 16px 20px;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}

.article-content th,
.article-content td {
    border: 1px solid var(--gray-200);
    padding: 10px 14px;
    text-align: left;
}

.article-content th {
    background: var(--primary);
    color: white;
}

.article-content td {
    background: var(--white);
}

.article-content strong {
    color: var(--primary);
}

.brand-recommend {
    margin-top: 30px;
    padding: 16px 20px;
    background: linear-gradient(135deg, #f0fdf4, #dcfce7);
    border-radius: 8px;
    border-left: 4px solid var(--primary);
    font-size: 14px;
    color: var(--gray-800);
}

.brand-recommend a {
    font-weight: 600;
}

/* ========== Related Articles ========== */
.related-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.related-item {
    padding: 12px 18px;
    background: var(--white);
    border-radius: 6px;
    box-shadow: var(--shadow);
    font-size: 14px;
    color: var(--gray-800) !important;
    transition: var(--transition);
}

.related-item:hover {
    background: var(--primary);
    color: white !important;
}

/* ========== Pagination ========== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: 30px 0;
}

.pagination a {
    padding: 8px 16px;
    background: var(--white);
    border-radius: 6px;
    box-shadow: var(--shadow);
    font-size: 14px;
    color: var(--gray-600) !important;
}

.pagination a.active,
.pagination a:hover {
    background: var(--primary);
    color: white !important;
}

/* ========== Sitemap ========== */
.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.sitemap-col h4 {
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--primary);
}

.sitemap-col ul {
    list-style: none;
}

.sitemap-col li {
    padding: 4px 0;
}

.sitemap-col li a {
    font-size: 14px;
    color: var(--gray-600) !important;
}

.sitemap-col li a:hover {
    color: var(--primary) !important;
}

/* ========== Footer ========== */
.footer {
    background: var(--gray-800);
    color: #ccc;
    padding: 40px 20px;
    margin-top: 60px;
    text-align: center;
    font-size: 14px;
}

.footer p {
    margin-bottom: 6px;
}

.footer a {
    color: var(--accent) !important;
}

/* ========== Empty ========== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--gray-600);
}

.empty-state h2 {
    font-size: 24px;
    margin-bottom: 12px;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .cat-grid,
    .sitemap-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .article-item {
        flex-direction: column;
    }

    .article-thumb {
        width: 100%;
        height: 180px;
    }

    .banner h1 { font-size: 26px; }
    .banner p { font-size: 15px; }
    .article-detail { padding: 20px; }
    .article-detail h1 { font-size: 22px; }

    /* 导航栏：保持横向，左右滑动 */
    .nav-bar { 
        flex-wrap: nowrap; 
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        gap: 8px;
        padding: 10px 12px;
    }
    .nav { 
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
        gap: 2px;
    }
    .nav a {
        flex-shrink: 0;
        padding: 6px 10px;
        font-size: 13px;
    }
    .logo { font-size: 16px; flex-shrink: 0; }

    /* 表格横向滚动 */
    .article-content table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        font-size: 13px;
    }
    .article-content th,
    .article-content td {
        padding: 8px 10px;
        white-space: nowrap;
    }

    .article-content { font-size: 15px; }
    .article-content h2 { font-size: 20px; }
}

@media (max-width: 480px) {
    .cat-grid,
    .sitemap-grid {
        grid-template-columns: 1fr;
    }
    .banner h1 { font-size: 22px; }
    .banner p { font-size: 14px; }
    .article-detail { padding: 16px; }
    .article-detail h1 { font-size: 19px; }
    .article-content { font-size: 14px; line-height: 1.8; }
    .article-content h2 { font-size: 18px; }
    .logo { font-size: 15px; }
    .nav a { font-size: 12px; padding: 5px 8px; }
}