/* ========== 资讯专栏页面全局样式 ========== */
.art-container { max-width: 1300px; margin: 0 auto; padding: 0 24px; }
.art-section { padding: 80px 0; }
.art-section-white { background: #fff; }
.art-section-gradient { background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%); }
.art-section-cta { background: linear-gradient(135deg, #1d56ff 0%, #0d3dcc 100%); color: #fff; padding: 80px 0; text-align: center; }

/* ========== Hero区域 ========== */
.art-hero { position: relative; padding: 120px 0 100px; overflow: hidden; background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #1d56ff 160%); color: #fff; text-align: center; }
.art-hero-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-image: radial-gradient(circle at 20% 30%, rgba(29, 86, 255, 0.15) 0%, transparent 50%), radial-gradient(circle at 80% 70%, rgba(74, 140, 255, 0.1) 0%, transparent 50%); z-index: 0; }
.art-hero-content { position: relative; z-index: 1; max-width: 900px; margin: 0 auto; padding: 0 24px; }
.art-hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px; background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.15); border-radius: 30px; font-size: 14px; color: #e2e8f0; margin-bottom: 28px; backdrop-filter: blur(10px); }
.art-hero-badge-dot { width: 8px; height: 8px; background: #10b981; border-radius: 50%; animation: art-pulse 2s infinite; }
@keyframes art-pulse { 0%, 100% { opacity: 1 } 50% { opacity: .4 } }
.art-hero-title { font-size: 48px; font-weight: 800; line-height: 1.2; margin-bottom: 24px; letter-spacing: -0.02em; }
.art-hero-desc { font-size: 18px; color: #94a3b8; line-height: 1.8; margin-bottom: 36px; }
.art-hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 56px; flex-wrap: wrap; }
.art-hero-btn { padding: 16px 36px; border-radius: 10px; font-size: 16px; font-weight: 600; cursor: pointer; transition: all 0.3s ease; border: none; }
.art-hero-btn-primary { background: linear-gradient(135deg, #1d56ff 0%, #4a8cff 100%); color: #fff; box-shadow: 0 8px 24px rgba(29, 86, 255, 0.35); }
.art-hero-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(29, 86, 255, 0.5); }
.art-hero-stats { display: flex; justify-content: center; gap: 64px; flex-wrap: wrap; }
.art-hero-stat-num { font-size: 40px; font-weight: 800; color: #fff; line-height: 1; margin-bottom: 8px; }
.art-hero-stat-label { font-size: 14px; color: #94a3b8; }

/* ========== Tab切换标签 ========== */
.art-tabs-wrapper { display: flex; justify-content: center; }
.art-tabs { display: flex; gap: 8px; background: #f1f5f9; padding: 6px; border-radius: 12px; }
.art-tab-btn { padding: 14px 28px; border: none; background: transparent; border-radius: 8px; font-size: 15px; font-weight: 600; color: #64748b; cursor: pointer; transition: all 0.3s ease; }
.art-tab-btn.active { background: #fff; color: #1d56ff; box-shadow: 0 2px 8px rgba(29, 86, 255, 0.1); }
.art-tab-btn:hover:not(.active) { color: #1d56ff; }

/* ========== 筛选栏 ========== */
.art-filter-bar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; padding: 20px 24px; background: #fff; border-radius: 12px; border: 1px solid #f1f5f9; }
.art-filter-left { display: flex; gap: 24px; flex-wrap: wrap; }
.art-filter-group { display: flex; align-items: center; gap: 8px; }
.art-filter-group label { font-size: 14px; font-weight: 600; color: #475569; }
.art-filter-select { padding: 10px 16px; border: 1px solid #e2e8f0; border-radius: 8px; font-size: 14px; color: #475569; background: #fff; cursor: pointer; }
.art-filter-select:focus { outline: none; border-color: #1d56ff; }
.art-search-box { display: flex; align-items: center; gap: 8px; }
.art-search-icon { width: 20px; height: 20px; color: #94a3b8; }
.art-search-input { padding: 10px 16px; border: 1px solid #e2e8f0; border-radius: 8px; font-size: 14px; color: #475569; width: 200px; }
.art-search-input:focus { outline: none; border-color: #1d56ff; }
.art-search-btn { padding: 10px 20px; background: linear-gradient(135deg, #1d56ff 0%, #4a8cff 100%); color: #fff; border: none; border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer; }

/* ========== 布局 ========== */
.art-layout { display: flex; gap: 32px; }
.art-main { flex: 1; }
.art-sidebar { width: 320px; flex-shrink: 0; position: sticky; top: 100px; }

/* ========== 文章卡片 ========== */
.art-article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.art-article-card { background: #fff; border-radius: 16px; overflow: hidden; border: 1px solid #f1f5f9; transition: all 0.35s ease; cursor: pointer; }
.art-article-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(29, 86, 255, 0.1); border-color: #e0e7ff; }
.art-article-cover { width: 100%; height: 180px; overflow: hidden; }
.art-article-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; }
.art-article-card:hover .art-article-cover img { transform: scale(1.05); }
.art-article-content { padding: 20px; }
.art-article-tags { display: flex; gap: 8px; margin-bottom: 10px; }
.art-tag { padding: 4px 12px; border-radius: 4px; font-size: 12px; font-weight: 600; }
.art-tag-news { background: rgba(239, 68, 68, 0.1); color: #ef4444; }
.art-tag-science { background: rgba(29, 86, 255, 0.1); color: #1d56ff; }
.art-tag-tech { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.art-tag-business { background: rgba(148, 163, 184, 0.1); color: #64748b; }
.art-article-title { font-size: 16px; font-weight: 700; color: #0f172a; margin-bottom: 10px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.art-article-excerpt { font-size: 14px; color: #64748b; line-height: 1.6; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.art-article-footer { display: flex; justify-content: space-between; align-items: center; }
.art-article-date { font-size: 13px; color: #94a3b8; }
.art-article-views { font-size: 13px; color: #94a3b8; }

/* ========== 分页 ========== */
.art-pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 48px; padding: 20px; background: #fff; border-radius: 12px; border: 1px solid #f1f5f9; }
.art-pagination-btn { padding: 10px 20px; border: 1px solid #e2e8f0; background: #fff; border-radius: 8px; font-size: 14px; font-weight: 600; color: #475569; cursor: pointer; transition: all 0.3s ease; }
.art-pagination-btn:hover:not(.art-pagination-btn-disabled) { border-color: #1d56ff; color: #1d56ff; }
.art-pagination-btn-disabled { opacity: 0.5; cursor: not-allowed; }
.art-pagination-nums { display: flex; gap: 4px; }
.art-pagination-num { width: 36px; height: 36px; border: none; background: #f1f5f9; border-radius: 8px; font-size: 14px; font-weight: 600; color: #475569; cursor: pointer; transition: all 0.3s ease; }
.art-pagination-num.active { background: linear-gradient(135deg, #1d56ff 0%, #4a8cff 100%); color: #fff; }
.art-pagination-num:hover:not(.active) { background: #e2e8f0; }
.art-pagination-dots { padding: 0 8px; color: #94a3b8; }

/* ========== 侧边栏 ========== */
.art-sidebar-section { background: #fff; border-radius: 16px; padding: 24px; margin-bottom: 20px; border: 1px solid #f1f5f9; }
.art-sidebar-title { font-size: 18px; font-weight: 700; color: #0f172a; margin-bottom: 12px; }
.art-sidebar-divider { height: 1px; background: #f1f5f9; margin-bottom: 16px; }
.art-hot-list { list-style: none; padding: 0; margin: 0; }
.art-hot-item { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; }
.art-hot-item:last-child { margin-bottom: 0; }
.art-hot-rank { width: 28px; height: 28px; background: #f1f5f9; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; color: #64748b; flex-shrink: 0; }
.art-hot-item:nth-child(1) .art-hot-rank { background: linear-gradient(135deg, #ef4444 0%, #f87171 100%); color: #fff; }
.art-hot-item:nth-child(2) .art-hot-rank { background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%); color: #fff; }
.art-hot-item:nth-child(3) .art-hot-rank { background: linear-gradient(135deg, #1d56ff 0%, #4a8cff 100%); color: #fff; }
.art-hot-link { font-size: 14px; color: #475569; line-height: 1.5; text-decoration: none; transition: color 0.2s; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.art-hot-link:hover { color: #1d56ff; }
.art-category-list { list-style: none; padding: 0; margin: 0; }
.art-category-list li { margin-bottom: 10px; }
.art-category-list li:last-child { margin-bottom: 0; }
.art-category-link { font-size: 14px; color: #475569; text-decoration: none; padding: 8px 12px; border-radius: 6px; display: block; transition: all 0.2s; }
.art-category-link:hover { background: rgba(29, 86, 255, 0.06); color: #1d56ff; }
.art-category-link.active { background: rgba(29, 86, 255, 0.1); color: #1d56ff; font-weight: 600; }
.art-recent-list { list-style: none; padding: 0; margin: 0; }
.art-recent-list li { margin-bottom: 10px; }
.art-recent-list li:last-child { margin-bottom: 0; }
.art-recent-link { font-size: 14px; color: #475569; text-decoration: none; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color 0.2s; }
.art-recent-link:hover { color: #1d56ff; }

/* ========== CTA ========== */
.art-cta-title { font-size: 36px; font-weight: 700; margin-bottom: 12px; }
.art-cta-desc { font-size: 16px; color: rgba(255, 255, 255, 0.85); margin-bottom: 32px; }
.art-cta-actions { display: flex; justify-content: center; }
.art-cta-btn { padding: 16px 48px; background: #fff; color: #1d56ff; border: none; border-radius: 10px; font-size: 16px; font-weight: 700; cursor: pointer; transition: all 0.3s ease; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15); }
.art-cta-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25); }

/* ========== 侧边锚点导航 ========== */
.art-side-nav { display: none; position: fixed; left: 24px; top: 50%; transform: translateY(-50%); z-index: 100; width: 130px; }
.art-side-nav-inner { background: rgba(255, 255, 255, 0.95); border-radius: 16px; padding: 16px 0; box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08); backdrop-filter: blur(10px); border: 1px solid rgba(0, 0, 0, 0.04); }
.art-side-nav-title { font-size: 15px; font-weight: 700; color: #0f172a; text-align: center; letter-spacing: 1px; }
.art-side-nav-divider { height: 1px; background: repeating-linear-gradient(90deg, transparent, transparent 4px, #e2e8f0 4px, #e2e8f0 8px); margin: 12px 16px; }
.art-side-nav-list { list-style: none; padding: 0; margin: 0; }
.art-side-nav-list li { margin: 0; }
.art-side-nav-link { display: block; padding: 8px 16px; font-size: 13px; color: #64748b; text-decoration: none; transition: all 0.25s ease; border-left: 3px solid transparent; position: relative; }
.art-side-nav-link:hover { color: #1d56ff; background: rgba(29, 86, 255, 0.04); }
.art-side-nav-link.active { color: #1d56ff; background: rgba(29, 86, 255, 0.06); border-left-color: #1d56ff; font-weight: 600; }

/* ========== 响应式 ========== */
@media (min-width: 1400px) { .art-side-nav { display: block; } }
@media (max-width: 1200px) {
    .art-article-grid { grid-template-columns: repeat(2, 1fr); }
    .art-sidebar { display: none; }
}
@media (max-width: 768px) {
    .art-section { padding: 60px 0; }
    .art-hero { padding: 80px 0 60px; }
    .art-hero-title { font-size: 32px; }
    .art-hero-desc { font-size: 16px; }
    .art-hero-stats { gap: 32px; }
    .art-hero-stat-num { font-size: 30px; }
    .art-tabs { flex-wrap: wrap; justify-content: center; }
    .art-tab-btn { padding: 10px 16px; font-size: 14px; }
    .art-filter-bar { flex-direction: column; align-items: stretch; }
    .art-filter-left { justify-content: center; }
    .art-search-box { width: 100%; }
    .art-search-input { width: 100%; }
    .art-article-grid { grid-template-columns: 1fr; }
    .art-article-cover { height: 200px; }
    .art-cta-title { font-size: 26px; }
}