:root{
    --bg:#f7f7f5;
    --card:#ffffff;
    --ink:#182033;
    --muted:#667085;
    --line:#e6e8ee;
    --brand:#111827;
    --accent:#f59e0b;
    --soft:#fff7e6;
    --radius:22px;
    --shadow:0 18px 50px rgba(17,24,39,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.72}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;height:auto}
.site-header{background:linear-gradient(180deg,#fff 0%,#fff8eb 100%);border-bottom:1px solid var(--line);position:relative;z-index:2}
.topbar{max-width:1180px;margin:0 auto;padding:20px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo img,.footer-logo img{width:166px;height:auto}
.domain-chip{background:#111827;color:#fff;border-radius:999px;padding:10px 16px;font-size:14px;box-shadow:var(--shadow)}
.domain-chip strong{color:#ffd27a}
.site-nav{max-width:1180px;margin:0 auto;padding:0 20px 16px;display:flex;gap:10px;flex-wrap:wrap}
.site-nav a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 14px;font-weight:700;color:#27324a;transition:.2s}
.site-nav a:hover{background:var(--brand);color:#fff;transform:translateY(-1px)}
.search-box{max-width:1180px;margin:0 auto;padding:0 20px 22px}
.search-box label{display:block;font-weight:800;margin-bottom:8px}
.search-row{display:flex;gap:10px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:8px;box-shadow:0 8px 30px rgba(17,24,39,.06)}
.search-row input{flex:1;border:0;outline:0;font-size:16px;padding:12px 14px;background:transparent}
.search-row button,.btn{border:0;background:var(--brand);color:#fff;border-radius:14px;padding:12px 18px;font-weight:800;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.search-notice{margin:8px 0 0;color:var(--muted);font-size:14px}
main{max-width:1180px;margin:0 auto;padding:26px 20px 56px}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:stretch;margin-bottom:28px}
.hero-copy,.hero-media,.card,.section-block,.article-body,.aside-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-copy{padding:34px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--soft);color:#995f00;border:1px solid #ffe2a5;border-radius:999px;padding:6px 12px;font-weight:800;font-size:14px}
h1{font-size:clamp(30px,4vw,54px);line-height:1.12;margin:18px 0 16px;letter-spacing:-.02em}
h2{font-size:clamp(22px,3vw,32px);line-height:1.24;margin:0 0 14px}
h3{font-size:21px;line-height:1.35;margin:0 0 10px}
p{margin:0 0 12px}.lead{font-size:18px;color:#4b5563}.muted{color:var(--muted)}
.meta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px;color:#475467;font-size:14px}.meta-row span{background:#f3f4f6;border-radius:999px;padding:6px 10px}
.hero-media{padding:14px;overflow:hidden}.hero-media figure{margin:0}.hero-media figcaption{font-size:14px;color:var(--muted);padding:10px 4px 0}
.video-shell{position:relative;border-radius:18px;overflow:hidden;display:block;background:#111827;isolation:isolate}.video-shell img,.video-shell video{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;transition:transform .35s,filter .35s}.video-shell video{position:absolute;inset:0;opacity:0}.play-badge{position:absolute;inset:auto auto 18px 18px;display:flex;align-items:center;gap:10px;background:rgba(17,24,39,.88);color:#fff;border-radius:999px;padding:10px 14px;font-weight:900;transform:translateY(8px);opacity:.92;transition:.25s}.play-icon{width:34px;height:34px;border-radius:50%;background:#fff;position:relative;display:inline-block}.play-icon:after{content:"";position:absolute;left:13px;top:9px;border-top:8px solid transparent;border-bottom:8px solid transparent;border-left:12px solid #111827}.video-shell:hover img,.video-shell:focus-within img{transform:scale(1.04);filter:brightness(.78)}.video-shell:hover .play-badge,.video-shell:focus-within .play-badge{transform:translateY(0);opacity:1}
.section-title{display:flex;justify-content:space-between;align-items:end;gap:14px;margin:34px 0 16px}.section-title p{margin:0;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid.two{grid-template-columns:repeat(2,1fr)}.grid.four{grid-template-columns:repeat(4,1fr)}
.card{overflow:hidden}.card-content{padding:18px}.card .thumb{position:relative}.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.tag{font-size:13px;background:#eef2ff;color:#394779;border-radius:999px;padding:5px 9px;font-weight:700}.stats{display:flex;gap:10px;flex-wrap:wrap;color:#667085;font-size:13px;border-top:1px solid var(--line);padding-top:12px;margin-top:12px}.byline{font-size:13px;color:#667085;display:flex;gap:8px;flex-wrap:wrap}.section-block{padding:24px;margin-top:20px}.topic-strip{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:center}.rank-list{counter-reset:rank;display:grid;gap:12px}.rank-list a{counter-increment:rank;display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);padding:14px;border-radius:16px}.rank-list a:before{content:counter(rank);width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--brand);color:#fff;font-weight:900;flex:0 0 auto}.author-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.author-card strong{display:block;font-size:18px}.faq-list{display:grid;gap:12px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}.faq-list summary{font-weight:900;cursor:pointer}.comment-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.comment-card strong{display:block}.contact-cta{display:flex;justify-content:space-between;gap:18px;align-items:center;background:#111827;color:#fff;border-radius:24px;padding:26px}.contact-cta p{color:#d1d5db}.btn.light{background:#fff;color:#111827}.breadcrumb{display:flex;gap:8px;flex-wrap:wrap;color:#667085;font-size:14px;margin-bottom:16px}.breadcrumb a{color:#334155;font-weight:800}.breadcrumb span:before{content:"/";margin-right:8px;color:#98a2b3}.page-hero{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);margin-bottom:22px}.page-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:22px}.article-body{padding:30px}.article-body h2{margin-top:28px}.article-body ul{padding-left:20px}.article-body li{margin:8px 0}.article-cover{margin:0 0 22px}.article-cover figcaption{font-size:14px;color:#667085;margin-top:8px}.aside-box{padding:20px;margin-bottom:18px}.site-footer{background:#111827;color:#e5e7eb;padding:38px 20px 20px}.footer-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:24px}.site-footer h2{font-size:18px;color:#fff}.site-footer a{display:block;color:#e5e7eb;margin:6px 0}.copyright{max-width:1180px;margin:24px auto 0;padding-top:18px;border-top:1px solid rgba(255,255,255,.15);color:#cbd5e1;font-size:14px}
@media (max-width:900px){.topbar,.hero,.topic-strip,.page-layout,.footer-grid{grid-template-columns:1fr;display:grid}.topbar{align-items:flex-start}.hero{gap:16px}.grid,.grid.two,.grid.four{grid-template-columns:1fr 1fr}.contact-cta{display:block}.contact-cta .btn{margin-top:10px}.domain-chip{border-radius:18px}.site-nav{overflow-x:auto;flex-wrap:nowrap}.site-nav a{white-space:nowrap}}
@media (max-width:560px){main{padding:18px 14px 40px}.grid,.grid.two,.grid.four{grid-template-columns:1fr}.hero-copy,.page-hero,.article-body{padding:22px}.search-row{display:block}.search-row button{width:100%;margin-top:8px}.meta-row span{font-size:12px}.footer-grid{display:block}.logo img,.footer-logo img{width:148px}}