/* TopBrand 前端样式 */
:root {
    --primary: #4a6cf7;
    --primary-dark: #3b5de7;
    --bg: #0a0a1a;
    --bg-alt: #111128;
    --bg-card: #16163a;
    --bg-hover: #1e1e48;
    --text: #e8e8f0;
    --text-secondary: #8888bb;
    --text-muted: #666699;
    --border: #2a2a5a;
    --accent: #6c63ff;
    --gradient: linear-gradient(135deg, #4a6cf7, #6c63ff);
    --radius: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { background: rgba(10,10,26,0.95); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; backdrop-filter: blur(20px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: bold; color: #fff; }
.logo-icon { width: 36px; height: 36px; background: var(--gradient); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 14px; color: #fff; font-weight: 700; }
.logo-img { height: 42px; width: auto; display: block; border-radius: 4px; }
.main-nav { display: flex; gap: 24px; }
.main-nav a { color: var(--text-secondary); font-size: 14px; padding: 6px 0; border-bottom: 2px solid transparent; transition: all 0.2s; }
.main-nav a:hover, .main-nav a.active { color: #fff; border-bottom-color: var(--primary); }
.header-search input { padding: 8px 16px; border: 1px solid var(--border); border-radius: 20px; background: var(--bg-alt); color: var(--text); font-size: 13px; outline: none; width: 220px; transition: all 0.3s; }
.header-search input:focus { border-color: var(--primary); width: 280px; }

/* Hero */
.hero-section { padding: 80px 0 60px; text-align: center; background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%); }
.hero-title { font-size: 48px; font-weight: 800; margin-bottom: 12px; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; letter-spacing: 2px; }
.hero-tagline { font-size: 15px; color: var(--primary); font-weight: 500; margin-bottom: 16px; letter-spacing: 1px; }
.hero-slogan { font-size: 20px; color: #fff; font-weight: 600; margin-bottom: 24px; max-width: 700px; margin-left: auto; margin-right: auto; line-height: 1.5; }
.hero-intro-text { font-size: 14px; color: var(--text-secondary); max-width: 800px; margin: 0 auto 32px; line-height: 1.8; }
.hero-stats { display: flex; justify-content: center; gap: 60px; margin-bottom: 40px; }
.hero-stat { text-align: center; }
.hero-stat-num { display: block; font-size: 36px; font-weight: 800; color: #fff; }
.hero-stat-label { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }

/* Hero Belief Section */
.hero-belief { border-top: 1px solid var(--border); padding-top: 36px; max-width: 700px; margin: 0 auto; }
.hero-belief-title { font-size: 16px; color: var(--text-muted); margin-bottom: 16px; font-weight: 500; letter-spacing: 2px; text-transform: uppercase; }
.hero-belief-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.hero-belief-item { font-size: 15px; color: var(--text-secondary); line-height: 1.6; font-style: italic; padding: 4px 0; }
.hero-closing { font-size: 17px; color: #fff; font-weight: 600; margin-top: 16px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.08); }

/* Sections */
.section { padding: 60px 0; }
.section-alt { background: var(--bg-alt); }
.section-title { font-size: 28px; font-weight: 700; margin-bottom: 32px; display: flex; align-items: baseline; gap: 12px; }
.section-subtitle { font-size: 14px; font-weight: 400; color: var(--text-muted); }

/* Brand Grid */
.brand-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.brand-grid-sm { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.brand-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; transition: all 0.3s; display: block; }
.brand-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(74,108,247,0.1); }
.brand-card-lg { padding: 28px; }
.brand-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.brand-rank { background: var(--gradient); color: #fff; padding: 2px 10px; border-radius: 12px; font-size: 12px; font-weight: 600; }
.brand-industry-tag { font-size: 12px; color: var(--text-muted); background: rgba(255,255,255,0.05); padding: 2px 10px; border-radius: 12px; }
.brand-card h3 { font-size: 18px; color: #fff; margin-bottom: 4px; }
.brand-ename { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.brand-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

/* Brand List */
.brand-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.brand-list-item { display: flex; justify-content: space-between; align-items: center; padding: 10px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; font-size: 14px; transition: all 0.2s; }
.brand-list-item:hover { border-color: var(--primary); background: var(--bg-hover); }
.brand-list-name { color: #fff; }
.brand-list-industry { font-size: 12px; color: var(--text-muted); }

/* Industry Filter */
.industry-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.filter-btn { padding: 6px 16px; border: 1px solid var(--border); border-radius: 20px; font-size: 13px; color: var(--text-secondary); transition: all 0.2s; }
.filter-btn:hover, .filter-btn.active { border-color: var(--primary); color: var(--primary); background: rgba(74,108,247,0.1); }

/* Ranking */
.ranking-list { max-width: 700px; margin: 0 auto; }
.ranking-item { display: flex; align-items: center; padding: 14px 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 8px; transition: all 0.2s; }
.ranking-item:hover { border-color: var(--primary); background: var(--bg-hover); }
.ranking-num { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; background: var(--bg-alt); color: var(--text-muted); margin-right: 16px; flex-shrink: 0; }
.ranking-num.top { background: var(--gradient); color: #fff; }
.ranking-info { flex: 1; }
.ranking-name { display: block; color: #fff; font-size: 15px; }
.ranking-meta { font-size: 12px; color: var(--text-muted); }
.ranking-arrow { color: var(--text-muted); font-size: 18px; }

/* News Grid */
.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 20px; }
.news-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: all 0.3s; }
.news-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.news-card-body { padding: 20px; }
.news-brands { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 10px; }
.news-brand-tag { font-size: 11px; color: var(--primary); background: rgba(74,108,247,0.1); padding: 2px 8px; border-radius: 4px; }
.news-card h3 { font-size: 16px; margin-bottom: 8px; line-height: 1.4; }
.news-card h3 a { color: #fff; }
.news-card h3 a:hover { color: var(--primary); }
.news-summary { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }
.news-meta { display: flex; align-items: center; gap: 12px; margin-top: 12px; font-size: 12px; color: var(--text-muted); flex-wrap: wrap; }
.news-source { color: var(--text-muted); }
.news-ai-badge, .ai-badge { background: rgba(255,152,0,0.15); color: #ff9800; padding: 1px 6px; border-radius: 4px; font-size: 11px; }

/* Brand Detail Page */
.brand-hero { padding: 40px 0; background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%); }
.brand-hero-content { display: grid; grid-template-columns: 1fr 1.5fr; gap: 50px; align-items: start; }
.brand-breadcrumb { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.brand-breadcrumb a { color: var(--text-muted); }
.brand-breadcrumb a:hover { color: var(--primary); }
.brand-hero-title { font-size: 40px; font-weight: 800; color: #fff; margin-bottom: 8px; }
.brand-hero-ename { font-size: 18px; color: var(--text-muted); margin-bottom: 12px; }
.brand-hero-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.brand-hero-description { padding-top: 0; }
.brand-hero-desc-title { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 14px; }
.meta-tag { padding: 4px 12px; background: rgba(255,255,255,0.05); border: 1px solid var(--border); border-radius: 16px; font-size: 12px; color: var(--text-secondary); }

.brand-detail-layout { display: grid; grid-template-columns: 260px 1fr; gap: 30px; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; }
.card-title { font-size: 20px; font-weight: 700; margin-bottom: 16px; display: flex; align-items: baseline; gap: 8px; }
.card-subtitle { font-size: 13px; font-weight: 400; color: var(--text-muted); }
.brand-description-content { font-size: 15px; line-height: 1.8; color: var(--text); }
.brand-description-content p { margin-bottom: 12px; }

.brand-news-item { padding: 16px 0; border-bottom: 1px solid var(--border); }
.brand-news-item:last-child { border-bottom: none; }
.brand-news-item h3 { font-size: 16px; margin-bottom: 6px; }
.brand-news-item h3 a { color: #fff; }
.brand-news-item h3 a:hover { color: var(--primary); }

/* Recommended Article Cards (侧栏) */
.recommended-list { display: flex; flex-direction: column; gap: 0; }
.recommended-card {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    text-decoration: none;
    transition: background 0.15s;
}
.recommended-card:last-child { border-bottom: none; }
.recommended-card:hover { background: var(--bg-hover); margin: 0 -12px; padding-left: 12px; padding-right: 12px; border-radius: 8px; }
.recommended-card:last-child:hover { margin-bottom: -12px; }
.recommended-card-title {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.recommended-card-summary {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.recommended-card-time {
    font-size: 11px;
    color: var(--text-muted);
}

/* 小屏：推荐文章变两列卡片网格，放在详情页下方 */
@media (max-width: 768px) {
    .recommended-section { order: 10; }
    .recommended-list {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .recommended-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 14px;
        border-bottom: 1px solid var(--border);
    }
    .recommended-card:hover {
        margin: 0;
        padding: 14px;
        border-color: var(--primary);
    }
    .recommended-card:last-child:hover { margin-bottom: 0; }
    .recommended-card-title { font-size: 13px; }
}
.sidebar-brand-item { padding: 8px 12px; background: var(--bg-alt); border-radius: 8px; font-size: 14px; color: var(--text); transition: all 0.2s; }
.sidebar-brand-item:hover { background: var(--bg-hover); color: var(--primary); }
.sidebar-news-list { display: flex; flex-direction: column; gap: 10px; }
.sidebar-news-item { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.sidebar-news-item:last-child { border-bottom: none; }
.sidebar-news-title { flex: 1; color: var(--text); }
.sidebar-news-item time { color: var(--text-muted); font-size: 12px; flex-shrink: 0; margin-left: 8px; }

/* Article Page */
.article-page { padding: 40px 0; }
.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 30px; }
.article-breadcrumb { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.article-breadcrumb a { color: var(--text-muted); }
.article-title { font-size: 32px; font-weight: 800; color: #fff; line-height: 1.3; margin-bottom: 16px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.article-brands { margin-bottom: 20px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 14px; color: var(--text-secondary); }
.article-brand-tag { padding: 3px 12px; background: rgba(74,108,247,0.1); border: 1px solid rgba(74,108,247,0.2); border-radius: 16px; font-size: 13px; color: var(--primary); }
.article-content { font-size: 16px; line-height: 1.9; color: var(--text); }
.article-content p { margin-bottom: 16px; }
.article-content p { margin-bottom: 16px; }
.article-content h2, .article-content h3 { color: #fff; margin: 24px 0 12px; }
.article-content img { max-width: 100%; border-radius: 8px; margin: 16px 0; }
.article-content a { color: var(--primary); text-decoration: underline; }
.article-content blockquote { border-left: 3px solid var(--primary); padding-left: 16px; margin: 16px 0; color: var(--text-secondary); }
.article-source { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-muted); }
.sidebar-brand-card { padding: 12px 0; border-bottom: 1px solid var(--border); }
.sidebar-brand-card:last-child { border-bottom: none; }
.sidebar-brand-card h4 { margin-bottom: 4px; }

/* Buttons */
.btn { padding: 10px 24px; border-radius: 8px; font-size: 14px; cursor: pointer; transition: all 0.3s; }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; }

/* Language Switcher */
.lang-switcher { position: relative; display: inline-block; }
/* 隐形桥接区域，消除按钮与下拉菜单之间的悬停断连 */
.lang-switcher::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 8px;
    background: transparent;
    z-index: 199;
}
.lang-btn { background: var(--bg-alt); border: 1px solid var(--border); color: var(--text); padding: 6px 12px; border-radius: 8px; cursor: pointer; font-size: 13px; display: flex; align-items: center; gap: 4px; transition: border-color 0.2s; white-space: nowrap; }
.lang-btn:hover { border-color: var(--primary); }
.lang-dropdown { display: none; position: absolute; top: 100%; right: 0; background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; min-width: 140px; z-index: 200; margin-top: 4px; box-shadow: 0 8px 30px rgba(0,0,0,0.3); }
.lang-switcher:hover .lang-dropdown { display: block; }
.lang-option { display: block; padding: 8px 14px; font-size: 13px; color: var(--text-secondary); text-decoration: none; transition: background 0.2s; white-space: nowrap; }
.lang-option:hover { background: var(--bg-hover); color: var(--text); border-radius: 8px; }
.lang-indicator { font-size: 12px; margin-right: 2px; }

/* Translation Bar (article detail) */
.translation-bar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: rgba(74,108,247,0.08); border: 1px solid rgba(74,108,247,0.15); border-radius: 8px; margin-bottom: 16px; font-size: 13px; flex-wrap: wrap; }
.translation-bar span { color: var(--text-secondary); }
.translation-link { display: inline-block; padding: 3px 10px; border-radius: 6px; background: var(--bg-alt); color: var(--text-secondary); font-size: 12px; text-decoration: none; transition: all 0.2s; }
.translation-link:hover { background: rgba(74,108,247,0.15); color: var(--primary); }

/* Footer */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 40px 0 20px; margin-top: 60px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 30px; }
.footer-brand h3 { font-size: 18px; color: #fff; margin-bottom: 8px; }
.footer-brand p { font-size: 13px; color: var(--text-muted); }
.footer-links h4 { font-size: 14px; color: #fff; margin-bottom: 12px; }
.footer-links a { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.footer-links a:hover { color: var(--primary); }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid var(--border); }
.footer-bottom p { font-size: 12px; color: var(--text-muted); }

/* Pagination */
.pagination { display: flex; justify-content: center; margin-top: 20px; }
.pagination ul { display: flex; gap: 4px; list-style: none; }
.pagination li a, .pagination li span { display: block; padding: 8px 14px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 6px; color: var(--text-secondary); text-decoration: none; font-size: 13px; }
.pagination li.active a { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination li a:hover { background: var(--bg-hover); }

/* News List (search results) */
.news-list { display: flex; flex-direction: column; gap: 8px; }
.news-item { display: flex; justify-content: space-between; padding: 12px 16px; background: var(--bg-card); border-radius: 8px; border: 1px solid var(--border); }
.news-item h4 { color: #fff; font-size: 14px; }
.news-item time { color: var(--text-muted); font-size: 12px; flex-shrink: 0; margin-left: 12px; }

/* Responsive */
@media (max-width: 768px) {
    .header-inner { flex-wrap: wrap; }
    .main-nav { order: 3; width: 100%; justify-content: center; }
    .hero-title { font-size: 32px; }
    .brand-hero-content { grid-template-columns: 1fr; }
    .hero-slogan { font-size: 17px; }
    .hero-intro-text { font-size: 13px; }
    .hero-stats { gap: 30px; flex-wrap: wrap; }
    .hero-stat-num { font-size: 28px; }
    .hero-belief-item { font-size: 13px; }
    .hero-closing { font-size: 15px; }
    .brand-detail-layout, .article-layout { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 20px; }
    .news-grid { grid-template-columns: 1fr; }
}