/* 黑料网外部样式：新闻门户 + 视频内容卡片，移动端优先 */
:root {
    --bg: #f6f7fb;
    --surface: #ffffff;
    --surface-soft: #eef2f8;
    --text: #172033;
    --muted: #617089;
    --line: #dfe6f2;
    --brand: #171d2f;
    --accent: #f0a23a;
    --accent-soft: #fff3df;
    --radius: 22px;
    --shadow: 0 16px 40px rgba(30, 45, 80, .08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--text);
    background: linear-gradient(180deg, #fbfcff 0, var(--bg) 320px);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.site-header { background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px); }
.top-strip { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; padding: 8px 20px; color: var(--muted); font-size: 14px; background: var(--brand); color: #fff; }
.navbar { max-width: 1180px; margin: 0 auto; padding: 18px 20px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand, .footer-brand { display: inline-flex; align-items: center; gap: 12px; }
.logo-mark { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; background: var(--brand); color: #fff; font-weight: 900; font-size: 22px; box-shadow: var(--shadow); }
.brand small { display: block; color: var(--muted); font-size: 12px; }
.nav-menu { display: flex; align-items: center; gap: 6px; list-style: none; padding: 0; margin: 0; }
.nav-menu a { display: block; padding: 10px 12px; border-radius: 999px; color: var(--muted); font-weight: 700; font-size: 15px; }
.nav-menu a:hover, .nav-menu a.active { background: var(--accent-soft); color: var(--brand); }
.nav-toggle { display: none; border: 1px solid var(--line); background: var(--surface); border-radius: 12px; padding: 8px 12px; font-weight: 700; }
.search-panel { border-top: 1px solid var(--line); background: #fbfcff; }
.search-form { max-width: 1180px; margin: 0 auto; padding: 14px 20px 18px; }
.search-form label { display: block; font-weight: 800; margin-bottom: 8px; }
.search-row { display: flex; gap: 10px; }
.search-row input { flex: 1; border: 1px solid var(--line); border-radius: 14px; padding: 13px 14px; font-size: 15px; }
.search-row button, .primary-btn, .ghost-btn { border: 0; border-radius: 14px; padding: 13px 18px; background: var(--brand); color: #fff; font-weight: 800; cursor: pointer; }
.ghost-btn { background: var(--surface); border: 1px solid var(--line); color: var(--brand); }
.search-tip { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.container { max-width: 1180px; margin: 0 auto; padding: 34px 20px 70px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr); gap: 26px; align-items: center; padding: 28px 0; }
.hero-card, .content-card, .panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.hero-card { padding: 34px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--brand); background: var(--accent-soft); padding: 6px 12px; border-radius: 999px; font-weight: 800; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 14px; }
h1 { font-size: clamp(32px, 5vw, 58px); letter-spacing: -1px; }
h2 { font-size: clamp(24px, 3vw, 36px); }
h3 { font-size: 20px; }
p { margin: 0 0 14px; }
.hero p, .lead { color: var(--muted); font-size: 17px; }
.action-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 24px; }
.metric { background: var(--surface-soft); border-radius: 18px; padding: 14px; }
.metric strong { display: block; font-size: 22px; }
.hero-visual { overflow: hidden; }
.hero-visual img { border-radius: var(--radius); width: 100%; }
.image-caption, .video-caption { padding: 12px 14px; color: var(--muted); font-size: 14px; }
.section-head { display: flex; justify-content: space-between; gap: 18px; align-items: end; margin: 44px 0 18px; }
.section-head p { color: var(--muted); max-width: 680px; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.content-card { padding: 20px; }
.content-card time, .meta, .tagline { color: var(--muted); font-size: 14px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.tag { background: var(--surface-soft); color: var(--brand); padding: 5px 10px; border-radius: 999px; font-size: 13px; font-weight: 700; }
.video-card { position: relative; overflow: hidden; min-height: 100%; }
.video-thumb { position: relative; border-radius: 18px; overflow: hidden; background: var(--surface-soft); }
.video-thumb::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,.55)); opacity: .82; }
.play-btn { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%) scale(.88); width: 70px; height: 70px; border-radius: 50%; background: rgba(255,255,255,.92); display: grid; place-items: center; opacity: 0; transition: .24s ease; z-index: 2; }
.play-btn::before { content: ""; margin-left: 5px; width: 0; height: 0; border-top: 13px solid transparent; border-bottom: 13px solid transparent; border-left: 20px solid var(--brand); }
.video-card:hover .play-btn, .video-card:focus-within .play-btn { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-card h3 { margin-top: 14px; }
.video-stats { display: flex; flex-wrap: wrap; gap: 10px; color: var(--muted); font-size: 14px; margin-top: 12px; }
.kicker { color: var(--accent); font-weight: 900; font-size: 14px; }
.news-list { display: grid; gap: 12px; }
.news-item { display: grid; gap: 8px; grid-template-columns: auto 1fr; padding: 14px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.news-item .rank { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 12px; background: var(--brand); color: #fff; font-weight: 900; }
.topic-card { display: grid; gap: 14px; }
.topic-card img { border-radius: 18px; aspect-ratio: 16/10; object-fit: cover; }
.author-card { display: flex; gap: 14px; align-items: center; }
.avatar { width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; background: var(--accent-soft); font-weight: 900; color: var(--brand); }
.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq summary { cursor: pointer; font-weight: 900; }
.comment-card blockquote { margin: 0; color: var(--text); }
.comment-card cite { display: block; margin-top: 12px; color: var(--muted); font-style: normal; }
.breadcrumb { color: var(--muted); margin-bottom: 16px; font-size: 14px; }
.article-shell { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; }
.article-main { padding: 28px; }
.article-main figure { margin: 24px 0; }
.article-main img { border-radius: 20px; }
.article-main ul { padding-left: 22px; }
.sidebar { display: grid; gap: 18px; align-content: start; }
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.check-list li { padding-left: 28px; position: relative; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--accent); font-weight: 900; }
.form-box { display: grid; gap: 14px; }
.form-box input, .form-box textarea { width: 100%; border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; font: inherit; }
.site-footer { background: var(--brand); color: #eef3ff; padding: 42px 20px 24px; }
.footer-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 1.2fr .8fr .9fr; gap: 24px; }
.footer-grid a { display: block; color: #fff; margin: 8px 0; }
.footer-grid p, .footer-note { color: rgba(255,255,255,.72); }
.footer-note { max-width: 1180px; margin: 28px auto 0; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.16); }
.footer-brand .logo-mark { background: #fff; color: var(--brand); }
.share-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.share-row button { border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 8px 12px; cursor: pointer; }
@media (max-width: 920px) {
    .hero, .article-shell { grid-template-columns: 1fr; }
    .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1fr; }
    .nav-toggle { display: inline-flex; }
    .nav-menu { position: absolute; left: 20px; right: 20px; top: 88px; display: none; flex-direction: column; align-items: stretch; background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 12px; box-shadow: var(--shadow); }
    .nav-menu.open { display: flex; }
}
@media (max-width: 640px) {
    .container { padding: 24px 14px 52px; }
    .hero-card, .article-main { padding: 22px; }
    .grid-2, .grid-3, .grid-4, .metrics { grid-template-columns: 1fr; }
    .search-row { flex-direction: column; }
    .section-head { display: block; }
}