/* ============================================================
   TEMP-002 · 体育 × 直播 双场景企业模板
   风格：暗夜赛场底色 + 鎏金体育质感 + 霓虹直播元素
   纯 HTML5/CSS3，无 MIP 依赖；交互为渐进增强
   ============================================================ */
:root {
    --bg: #070b16;
    --bg-2: #0b1120;
    --panel: #111a2e;
    --panel-2: #16213c;
    --line: rgba(255, 255, 255, 0.08);
    --gold: #ffb320;
    --gold-2: #ff8a00;
    --live: #ff3b54;
    --cyan: #38e1ff;
    --text: #e9eef8;
    --muted: #8b96ad;
    --radius: 14px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    --grad-gold: linear-gradient(135deg, #ffb320, #ff7a00);
    --grad-live: linear-gradient(135deg, #ff3b54, #ff6b3d);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--text); text-decoration: none; transition: color 0.2s, opacity 0.2s; }
a:hover { color: var(--gold); }
h1, h2, h3, h4 { line-height: 1.35; margin: 0 0 12px; font-weight: 700; }
p { margin: 0 0 12px; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.container { width: min(1200px, 92%); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- 顶部直播状态条 ---------- */
.live-bar {
    background: #04060d;
    border-bottom: 1px solid var(--line);
    font-size: 0.82rem;
    color: var(--muted);
}
.live-bar .container { display: flex; justify-content: space-between; align-items: center; min-height: 34px; gap: 16px; }
.live-bar .live-dot { display: inline-flex; align-items: center; gap: 6px; color: var(--live); font-weight: 700; }
.live-bar .live-dot i { width: 8px; height: 8px; border-radius: 50%; background: var(--live); box-shadow: 0 0 8px var(--live); animation: pulse 1.4s infinite; }
@keyframes pulse { 50% { opacity: 0.35; } }
.live-bar .bar-links a { color: var(--muted); margin-left: 14px; }
.live-bar .bar-links a:hover { color: var(--gold); }

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 90;
    background: rgba(7, 11, 22, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 800; letter-spacing: 1px; }
.brand:hover { color: var(--text); }
.brand .brand-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; border-radius: 10px;
    background: var(--grad-gold); color: #1a1200; font-size: 0.85rem; font-weight: 900;
    box-shadow: 0 4px 14px rgba(255, 138, 0, 0.4);
}
.brand .brand-sub { display: block; font-size: 0.68rem; font-weight: 400; color: var(--muted); letter-spacing: 3px; }
.main-nav ul { display: flex; gap: 4px; }
.main-nav a {
    display: block; padding: 8px 15px; border-radius: 8px;
    color: var(--text); font-weight: 500; font-size: 0.95rem;
}
.main-nav a:hover { color: var(--gold); background: rgba(255, 179, 32, 0.08); }
.main-nav li.active a { color: var(--gold); background: rgba(255, 179, 32, 0.12); }
.header-cta {
    display: inline-flex; align-items: center; gap: 7px;
    background: var(--grad-live); color: #fff; font-weight: 700; font-size: 0.88rem;
    padding: 9px 18px; border-radius: 999px; box-shadow: 0 4px 16px rgba(255, 59, 84, 0.4);
    white-space: nowrap;
}
.header-cta:hover { color: #fff; opacity: 0.9; }
.header-cta i { width: 8px; height: 8px; border-radius: 50%; background: #fff; animation: pulse 1.2s infinite; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; }

/* ---------- Hero 展示区 ---------- */
.hero {
    position: relative; overflow: hidden;
    background:
        radial-gradient(900px 400px at 85% -10%, rgba(56, 225, 255, 0.12), transparent 60%),
        radial-gradient(700px 380px at 5% 110%, rgba(255, 138, 0, 0.12), transparent 60%),
        var(--bg-2);
    border-bottom: 1px solid var(--line);
}
.hero .container { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px; padding: 52px 0 56px; align-items: center; }
.hero-kicker {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--cyan); font-size: 0.82rem; font-weight: 700; letter-spacing: 2px;
    border: 1px solid rgba(56, 225, 255, 0.35); border-radius: 999px; padding: 5px 14px;
    margin-bottom: 18px; background: rgba(56, 225, 255, 0.06);
}
.hero h1 { font-size: clamp(1.7rem, 3.4vw, 2.7rem); line-height: 1.25; margin-bottom: 14px; }
.hero h1 em { font-style: normal; background: var(--grad-gold); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .hero-desc { color: var(--muted); font-size: 1.02rem; max-width: 520px; margin-bottom: 24px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-gold, .btn-ghost {
    display: inline-block; padding: 12px 28px; border-radius: 999px;
    font-weight: 700; font-size: 0.95rem;
}
.btn-gold { background: var(--grad-gold); color: #1a1200; box-shadow: 0 6px 20px rgba(255, 138, 0, 0.4); }
.btn-gold:hover { color: #1a1200; opacity: 0.92; }
.btn-ghost { border: 1px solid rgba(56, 225, 255, 0.5); color: var(--cyan); }
.btn-ghost:hover { background: rgba(56, 225, 255, 0.1); color: var(--cyan); }
.hero-stats { display: flex; gap: 34px; margin-top: 30px; }
.hero-stats b { display: block; font-size: 1.5rem; color: var(--gold); line-height: 1.2; }
.hero-stats span { font-size: 0.8rem; color: var(--muted); }

/* Hero 右侧：直播 mosaic */
.hero-mosaic { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.hero-mosaic a {
    position: relative; display: block; border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--line); box-shadow: var(--shadow); background: var(--panel);
}
.hero-mosaic a:nth-child(1) { grid-column: 1 / -1; }
.hero-mosaic img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16 / 9; transition: transform 0.5s; }
.hero-mosaic a:nth-child(n + 2) img { aspect-ratio: 4 / 3; }
.hero-mosaic a:hover img { transform: scale(1.05); }
.hero-mosaic .mos-cap {
    position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 12px 10px;
    background: linear-gradient(transparent, rgba(4, 6, 13, 0.92));
    font-size: 0.85rem; font-weight: 600;
    display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
.hero-mosaic a:hover .mos-cap { color: var(--gold); }
.live-badge {
    position: absolute; top: 10px; left: 10px; z-index: 2;
    display: inline-flex; align-items: center; gap: 5px;
    background: var(--grad-live); color: #fff; font-size: 0.7rem; font-weight: 800;
    padding: 3px 10px; border-radius: 999px; letter-spacing: 1px;
    box-shadow: 0 2px 10px rgba(255, 59, 84, 0.5);
}
.live-badge i { width: 6px; height: 6px; border-radius: 50%; background: #fff; animation: pulse 1.2s infinite; }
.view-badge {
    position: absolute; top: 10px; right: 10px; z-index: 2;
    background: rgba(4, 6, 13, 0.7); color: var(--cyan); font-size: 0.7rem; font-weight: 700;
    padding: 3px 9px; border-radius: 999px; border: 1px solid rgba(56, 225, 255, 0.3);
}

/* ---------- 赛事/节目 跑马灯 ---------- */
.ticker { background: #04060d; border-bottom: 1px solid var(--line); overflow: hidden; }
.ticker .ticker-track { display: flex; gap: 44px; padding: 10px 0; width: max-content; animation: ticker 36s linear infinite; }
.ticker:hover .ticker-track { animation-play-state: paused; }
@keyframes ticker { to { transform: translateX(-50%); } }
.ticker .tk-item { display: inline-flex; align-items: center; gap: 10px; color: var(--muted); font-size: 0.85rem; white-space: nowrap; }
.ticker .tk-item b { color: var(--gold); }
.ticker .tk-item .tk-live { color: var(--live); font-weight: 800; }

/* ---------- 区块通用 ---------- */
.section { padding: 56px 0; }
.section.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-title { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 28px; }
.section-title h2 { font-size: 1.5rem; position: relative; padding-left: 14px; margin: 0; }
.section-title h2::before { content: ""; position: absolute; left: 0; top: 15%; bottom: 15%; width: 5px; border-radius: 3px; background: var(--grad-gold); }
.section-title .sub { color: var(--muted); font-size: 0.85rem; margin-top: 2px; }
.section-title .more { color: var(--muted); font-size: 0.88rem; white-space: nowrap; }
.section-title .more:hover { color: var(--gold); }
.section-title h1 { font-size: 1.5rem; position: relative; padding-left: 14px; margin: 0; }
.section-title h1::before { content: ""; position: absolute; left: 0; top: 15%; bottom: 15%; width: 5px; border-radius: 3px; background: var(--grad-gold); }

/* ---------- 功能区：核心业务卡 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.feature-card {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
    overflow: hidden; transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
    display: flex; flex-direction: column;
}
.feature-card:hover { transform: translateY(-5px); border-color: rgba(255, 179, 32, 0.45); box-shadow: var(--shadow); }
.feature-card .thumb { position: relative; display: block; }
.feature-card .thumb img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.feature-card .fc-no {
    position: absolute; right: 10px; top: 10px; width: 30px; height: 30px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(4, 6, 13, 0.72); border: 1px solid rgba(255, 179, 32, 0.5); color: var(--gold);
    font-size: 0.78rem; font-weight: 800; border-radius: 8px;
}
.feature-card .fc-body { padding: 16px 16px 18px; flex: 1; display: flex; flex-direction: column; }
.feature-card h3 { font-size: 1.02rem; margin-bottom: 6px; }
.feature-card p { color: var(--muted); font-size: 0.85rem; flex: 1; margin: 0; }
.feature-card .fc-link { margin-top: 12px; color: var(--gold); font-size: 0.85rem; font-weight: 700; }

/* ---------- 功能区：直播节目格 ---------- */
.live-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.live-card {
    position: relative; border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--line); background: var(--panel); box-shadow: var(--shadow);
}
.live-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 0.5s; }
.live-card:hover img { transform: scale(1.06); }
.live-card .lv-mask {
    position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end;
    padding: 34px 12px 12px; background: linear-gradient(transparent 30%, rgba(4, 6, 13, 0.9));
}
.live-card .lv-title { font-size: 0.9rem; font-weight: 700; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.live-card .lv-meta { font-size: 0.75rem; color: var(--muted); margin-top: 3px; }
.live-card .lv-meta b { color: var(--cyan); }
.live-card:hover .lv-title { color: var(--gold); }
.live-card::after {
    content: "▶"; position: absolute; left: 50%; top: 44%; transform: translate(-50%, -50%);
    width: 46px; height: 46px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    background: rgba(255, 59, 84, 0.85); color: #fff; font-size: 1rem; padding-left: 4px;
    opacity: 0; transition: opacity 0.25s; box-shadow: 0 0 24px rgba(255, 59, 84, 0.6);
}
.live-card:hover::after { opacity: 1; }

/* ---------- 资讯文章区 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.news-item {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
    overflow: hidden; transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
    display: flex; flex-direction: column;
}
.news-item:hover { transform: translateY(-4px); border-color: rgba(255, 179, 32, 0.4); box-shadow: var(--shadow); }
.news-thumb { display: block; position: relative; }
.news-thumb img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.news-body { padding: 14px 16px 16px; display: flex; flex-direction: column; flex: 1; }
.news-body h3 { font-size: 1rem; margin-bottom: 6px; }
.news-body h3 a { color: var(--text); }
.news-body h3 a:hover { color: var(--gold); }
.news-body p {
    color: var(--muted); font-size: 0.85rem; flex: 1; margin: 0;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-meta { display: flex; justify-content: space-between; gap: 10px; margin-top: 12px; font-size: 0.78rem; color: var(--muted); }
.news-meta .nm-hot { color: var(--live); font-weight: 700; }

/* 列表行式（紧凑） */
.news-lines li {
    display: flex; align-items: center; gap: 14px; padding: 13px 4px;
    border-bottom: 1px dashed var(--line);
}
.news-lines li:last-child { border-bottom: 0; }
.news-lines .no {
    width: 26px; height: 26px; flex: none; display: flex; align-items: center; justify-content: center;
    font-size: 0.78rem; font-weight: 800; color: var(--muted); border-radius: 7px; background: var(--panel-2);
}
.news-lines li:nth-child(-n+3) .no { background: var(--grad-gold); color: #1a1200; }
.news-lines .t { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-lines .t a { color: var(--text); }
.news-lines .t a:hover { color: var(--gold); }
.news-lines time { color: var(--muted); font-size: 0.78rem; flex: none; }

/* ---------- 双列布局 + 侧栏 ---------- */
.layout-2col { display: grid; grid-template-columns: 1fr 330px; gap: 30px; align-items: start; }
.sidebar .widget {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 18px 20px; margin-bottom: 20px;
}
.sidebar .widget h3 {
    font-size: 1.02rem; margin-bottom: 12px; padding-bottom: 10px; position: relative;
    border-bottom: 1px solid var(--line);
}
.sidebar .widget h3::after { content: ""; position: absolute; left: 0; bottom: -1px; width: 42px; height: 2px; background: var(--grad-gold); border-radius: 2px; }
.sidebar .widget ul li { padding: 7px 0; border-bottom: 1px dashed var(--line); font-size: 0.9rem; }
.sidebar .widget ul li:last-child { border-bottom: 0; }
.sidebar .widget ul li a { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar .widget .w-time { color: var(--muted); font-size: 0.75rem; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
.tag-cloud a {
    display: inline-block; padding: 5px 13px; border-radius: 999px; font-size: 0.82rem;
    background: var(--panel-2); border: 1px solid var(--line); color: var(--muted);
}
.tag-cloud a:hover { color: var(--gold); border-color: rgba(255, 179, 32, 0.5); background: rgba(255, 179, 32, 0.08); }
.widget-cta { background: linear-gradient(160deg, var(--panel-2), #0b1120) !important; border-color: rgba(56, 225, 255, 0.25) !important; text-align: center; }
.widget-cta h3 { border-bottom: 0 !important; }
.widget-cta h3::after { display: none; }
.widget-cta p { color: var(--muted); font-size: 0.85rem; }

/* ---------- 内页文章 ---------- */
.breadcrumb { font-size: 0.85rem; color: var(--muted); padding: 18px 0 0; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.breadcrumb li { display: flex; gap: 6px; align-items: center; }
.breadcrumb li + li::before { content: "/"; color: rgba(139, 150, 173, 0.5); }
.breadcrumb a:hover { color: var(--gold); }
.article-wrap {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
    padding: clamp(20px, 4vw, 40px);
}
.article-title { font-size: clamp(1.4rem, 2.6vw, 1.9rem); line-height: 1.4; }
.article-meta { display: flex; flex-wrap: wrap; gap: 16px; color: var(--muted); font-size: 0.85rem; padding: 12px 0 16px; border-bottom: 1px solid var(--line); margin-bottom: 22px; }
.article-meta a { color: var(--cyan); }
.article-content { font-size: 1.02rem; color: #d6dcea; }
.article-content h2, .article-content h3 { margin-top: 28px; color: var(--text); }
.article-content p { margin-bottom: 16px; }
.article-content img { border-radius: 10px; margin: 16px auto; }
.article-content a { color: var(--cyan); text-decoration: underline; }
.article-content ul, .article-content ol { padding-left: 22px; margin-bottom: 14px; list-style: disc; }
.article-content table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.article-content th, .article-content td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 24px 0; font-size: 0.85rem; }
.article-tags a { padding: 4px 12px; border-radius: 999px; background: var(--panel-2); border: 1px solid var(--line); color: var(--muted); }
.article-tags a:hover { color: var(--gold); border-color: rgba(255, 179, 32, 0.5); }
.updown { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 22px; }
.updown a {
    display: block; background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px;
    padding: 12px 16px; font-size: 0.88rem; overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
}
.updown a:hover { border-color: rgba(255, 179, 32, 0.45); }
.updown .ud-label { color: var(--muted); font-size: 0.75rem; margin-right: 8px; }
.related-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

/* ---------- 空态提示 ---------- */
.no-data {
    grid-column: 1 / -1; text-align: center; color: var(--muted);
    background: var(--panel-2); border: 1px dashed var(--line2, var(--line)); border-radius: 12px;
    padding: 26px 20px; font-size: 0.92rem; line-height: 1.9;
}
.no-data a { color: var(--accent, #ffb320); text-decoration: underline; }

/* ---------- 图集 ---------- */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.gallery-grid a { position: relative; border-radius: 10px; overflow: hidden; border: 1px solid var(--line); display: block; }
.gallery-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 0.4s; }
.gallery-grid a:hover img { transform: scale(1.05); }
.gallery-grid .g-cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 20px 10px 8px; font-size: 0.8rem; background: linear-gradient(transparent, rgba(4, 6, 13, 0.9)); }

/* ---------- 分页 / 搜索 ---------- */
.pagination, .pagebar { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 28px; }
.pagination a, .pagination span, .pagebar a, .pagebar span {
    display: inline-block; min-width: 38px; text-align: center; padding: 8px 12px;
    border-radius: 8px; border: 1px solid var(--line); background: var(--panel); color: var(--muted); font-size: 0.88rem;
}
.pagination .current, .pagination a:hover, .pagebar .current, .pagebar a:hover {
    color: #1a1200; background: var(--grad-gold); border-color: transparent; font-weight: 700;
}
.search-form { display: flex; gap: 10px; max-width: 560px; margin-bottom: 26px; }
.search-form input[type="text"] {
    flex: 1; background: var(--panel); border: 1px solid var(--line); border-radius: 999px;
    color: var(--text); padding: 11px 20px; font-size: 0.95rem; outline: none;
}
.search-form input[type="text"]:focus { border-color: rgba(56, 225, 255, 0.5); }
.search-form input[type="submit"] {
    border: 0; cursor: pointer; border-radius: 999px; padding: 0 26px; font-weight: 700;
    background: var(--grad-gold); color: #1a1200;
}

/* ---------- 关于/CTA 横幅 ---------- */
.cta-banner {
    position: relative; overflow: hidden; border-radius: var(--radius);
    background: linear-gradient(120deg, #1a1206, var(--panel-2) 55%, #08131c);
    border: 1px solid rgba(255, 179, 32, 0.35); padding: 34px clamp(20px, 4vw, 44px);
    display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap;
}
.cta-banner::before {
    content: ""; position: absolute; right: -60px; top: -60px; width: 220px; height: 220px; border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 179, 32, 0.25), transparent 70%);
}
.cta-banner h2 { font-size: 1.3rem; margin: 0 0 4px; }
.cta-banner p { color: var(--muted); margin: 0; font-size: 0.9rem; }

/* ---------- 404 ---------- */
.error-404 { text-align: center; padding: 90px 0 110px; }
.error-404 .code { font-size: 6rem; font-weight: 900; line-height: 1; background: var(--grad-gold); -webkit-background-clip: text; background-clip: text; color: transparent; }
.error-404 h2 { margin: 18px 0 8px; }
.error-404 p { color: var(--muted); }
.error-404 a { display: inline-block; margin-top: 22px; padding: 12px 32px; border-radius: 999px; background: var(--grad-gold); color: #1a1200; font-weight: 700; }

/* ---------- Footer ---------- */
.site-footer { background: #04060d; border-top: 1px solid var(--line); margin-top: 56px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 30px; padding: 46px 0 34px; }
.site-footer h4 { font-size: 1rem; margin-bottom: 16px; color: var(--text); }
.site-footer h4::after { content: ""; display: block; width: 30px; height: 3px; margin-top: 8px; border-radius: 2px; background: var(--grad-gold); }
.site-footer p, .site-footer li { color: var(--muted); font-size: 0.87rem; }
.site-footer ul li { padding: 4px 0; }
.site-footer ul a:hover { color: var(--gold); }
.footer-brand .fb-logo { display: flex; align-items: center; gap: 9px; font-size: 1.15rem; font-weight: 800; color: var(--text); margin-bottom: 12px; }
.footer-brand .fb-logo i { width: 34px; height: 34px; border-radius: 9px; background: var(--grad-gold); color: #1a1200; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 900; font-style: normal; }
.friend-link { padding: 16px 0; border-top: 1px solid var(--line); font-size: 0.85rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
.friend-link a { color: var(--muted); }
.friend-link a:hover { color: var(--gold); }
.footer-bottom { border-top: 1px solid var(--line); padding: 18px 0 22px; text-align: center; color: var(--muted); font-size: 0.82rem; }
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--gold); }

/* ---------- 返回顶部 ---------- */
.back-to-top {
    position: fixed; right: 20px; bottom: 24px; z-index: 95;
    width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
    background: var(--grad-gold); color: #1a1200; font-size: 1.1rem; font-weight: 900;
    box-shadow: 0 6px 20px rgba(255, 138, 0, 0.4); opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.back-to-top.show { opacity: 1; pointer-events: auto; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .hero .container { grid-template-columns: 1fr; padding: 40px 0; }
    .hero-mosaic { display: none; }
    .feature-grid, .live-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .layout-2col { grid-template-columns: 1fr; }
    .sidebar { order: 2; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .related-list, .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
    .live-bar .bar-links { display: none; }
    .nav-toggle { display: block; }
    .main-nav {
        position: fixed; inset: 0; top: 0; z-index: 99; background: rgba(4, 6, 13, 0.97);
        display: none; padding: 80px 30px 30px;
    }
    .main-nav.open { display: block; }
    .main-nav ul { flex-direction: column; gap: 6px; }
    .main-nav a { font-size: 1.1rem; }
    .main-nav .nav-close { position: absolute; top: 20px; right: 24px; background: none; border: 0; color: var(--text); font-size: 1.8rem; cursor: pointer; }
    .header-cta { display: none; }
    .feature-grid, .live-grid, .news-grid, .related-list, .gallery-grid { grid-template-columns: 1fr; }
    .hero-stats { gap: 22px; }
    .updown { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .section { padding: 40px 0; }
}
@media (min-width: 721px) { .main-nav .nav-close { display: none; } }