:root{
  --bg:#f5f7fb;
  --card:#ffffff;
  --text:#172033;
  --muted:#667085;
  --line:#e5e7ef;
  --brand:#142440;
  --accent:#2f80ed;
  --soft:#eef5ff;
  --shadow:0 18px 45px rgba(20,36,64,.10);
}
*{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","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
.site-header{background:linear-gradient(180deg,#fff,#f7fbff);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.topbar{max-width:1180px;margin:0 auto;padding:18px 20px 12px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo,.footer-logo{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--brand)}
.logo img,.footer-logo img{width:58px;height:auto}.footer-logo img{width:52px}
.logo span{font-size:22px}.domain-pill{background:var(--soft);border:1px solid #d7e8ff;border-radius:999px;padding:8px 14px;color:#26415d;font-size:14px}
.main-nav{max-width:1180px;margin:0 auto;padding:0 20px 14px;display:flex;gap:10px;flex-wrap:wrap}
.main-nav a{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:700;font-size:14px}
.search-wrap{max-width:1180px;margin:0 auto;padding:0 20px 18px}.search-wrap label{display:block;font-weight:800;margin-bottom:8px}.search-box{display:flex;gap:10px}.search-box input{flex:1;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font-size:16px;background:#fff}.search-box button,.btn{border:0;border-radius:14px;padding:13px 18px;font-weight:800;cursor:pointer}.search-box button,.btn.primary{background:var(--brand);color:#fff}.btn.ghost{background:#fff;border:1px solid var(--line)}.search-note{margin:8px 0 0;color:var(--muted);font-size:14px}
main{max-width:1180px;margin:0 auto;padding:24px 20px 52px}.hero,.page-hero{background:var(--card);border:1px solid var(--line);border-radius:28px;padding:34px;box-shadow:var(--shadow)}.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center}.hero h1,.page-hero h1{font-size:clamp(30px,4vw,54px);line-height:1.15;margin:10px 0 16px}.hero p,.page-hero p{color:var(--muted);font-size:17px}.hero-figure,.page-hero figure,.side-panel figure,.article-cover{margin:0}.hero-figure img,.page-hero img,.side-panel img,.article-cover img{border-radius:24px;border:1px solid var(--line)}figcaption{font-size:13px;color:var(--muted);margin-top:10px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.domain-line{font-size:14px!important}.eyebrow{color:var(--accent)!important;font-weight:900;letter-spacing:.04em;margin:0 0 8px}.breadcrumb{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:14px;margin-bottom:12px}.breadcrumb a{color:var(--accent)}
.section-block{margin-top:28px;background:var(--card);border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:var(--shadow)}.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-title h2{font-size:30px;line-height:1.25;margin:0}.section-title.compact{display:block}.section-title a{color:var(--accent);font-weight:800}.two-col{display:grid;grid-template-columns:1.3fr .7fr;gap:24px;align-items:start}
.video-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.video-card,.news-card,.rank-card,.author-card,.comment-card,.contact-panel article,.fake-form{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden}.video-card{transition:transform .2s ease,box-shadow .2s ease}.video-card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(20,36,64,.12)}.video-media{position:relative;aspect-ratio:16/9;background:#111;overflow:hidden}.video-media video{width:100%;height:100%;object-fit:cover;display:block}.play-button{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.82);width:62px;height:62px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.92);color:var(--brand);font-weight:900;opacity:.1;transition:.2s ease}.video-card:hover .play-button{opacity:1;transform:translate(-50%,-50%) scale(1)}.video-badge{position:absolute;left:14px;top:14px;background:rgba(20,36,64,.86);color:#fff;border-radius:999px;padding:6px 10px;font-size:13px;font-weight:800}.video-body{padding:18px}.video-body h3,.news-card h3,.rank-card h3{margin:0 0 8px;line-height:1.35}.video-body p,.news-card p,.rank-card p,.author-card p,.comment-card p{color:var(--muted);margin:8px 0}.metrics{font-weight:800;color:#314158!important}.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.tags span{font-size:12px;font-weight:800;padding:5px 9px;border-radius:999px;background:var(--soft);color:#24507f}.news-card{display:grid;grid-template-columns:190px 1fr;gap:16px;padding:14px;margin-bottom:14px}.news-card .thumb img{height:145px;width:100%;object-fit:cover;border-radius:16px}.meta{font-size:13px!important;color:#7a8494!important}.side-panel{background:#fbfdff;border:1px solid var(--line);border-radius:24px;padding:20px}.topic-list{padding-left:18px}.topic-list li{margin:10px 0}.rank-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.rank-card{padding:18px}.rank-card strong{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:12px;background:var(--brand);color:#fff;margin-bottom:12px}.author-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.author-card{padding:18px}.author-card img{border-radius:18px;margin-bottom:14px}.author-card.large{padding:24px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 16px;margin-bottom:10px}.faq-list summary{font-weight:900;cursor:pointer}.comment-list{display:grid;gap:10px}.comment-card{padding:16px}.comment-card h3{margin:0}.comment-card span{font-size:13px;color:var(--accent);font-weight:800}.cta-panel{display:flex;align-items:center;justify-content:space-between;gap:20px;background:linear-gradient(135deg,#ffffff,#edf6ff)}.page-hero{margin-bottom:28px}.page-hero figure{margin-top:18px}.article-page{background:var(--card);border:1px solid var(--line);border-radius:28px;padding:30px;box-shadow:var(--shadow)}.article-head h1{font-size:clamp(30px,4vw,48px);line-height:1.18;margin:8px 0}.lead{font-size:18px;color:var(--muted)}.article-cover{margin:24px 0}.article-content{font-size:18px}.article-content h2{margin-top:28px}.related-block{box-shadow:none}.contact-panel{display:grid;grid-template-columns:1fr 1fr;gap:16px}.contact-panel article,.fake-form{padding:22px}.fake-form{display:grid;gap:14px}.fake-form label{display:grid;gap:8px;font-weight:800}.fake-form input,.fake-form textarea{border:1px solid var(--line);border-radius:14px;padding:12px;font-size:16px}.fake-form textarea{min-height:150px}.site-footer{background:#0f1c31;color:#dce8f7;padding:40px 20px}.footer-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:22px}.site-footer a{color:#fff}.site-footer h2{font-size:18px}.site-footer p{color:#b8c7da}.copyright{max-width:1180px;margin:24px auto 0;border-top:1px solid rgba(255,255,255,.12);padding-top:20px}
@media (max-width:900px){.hero,.two-col,.contact-panel{grid-template-columns:1fr}.video-grid,.rank-grid,.author-grid,.footer-grid{grid-template-columns:1fr 1fr}.section-title,.cta-panel{display:block}.news-card{grid-template-columns:1fr}.news-card .thumb img{height:auto}.topbar{display:block}.domain-pill{display:inline-block;margin-top:10px}}
@media (max-width:620px){main{padding:14px 12px 36px}.hero,.page-hero,.section-block,.article-page{border-radius:20px;padding:20px}.video-grid,.rank-grid,.author-grid,.footer-grid{grid-template-columns:1fr}.search-box{display:block}.search-box button{width:100%;margin-top:10px}.main-nav{overflow:auto;flex-wrap:nowrap}.main-nav a{white-space:nowrap}.logo span{font-size:18px}}