:root{--bg:#f7f7f4;--paper:#fff;--ink:#151515;--muted:#666;--line:#e6e2da;--accent:#222;--soft:#f0eee8;--radius:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);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}.wrap{width:min(1180px,92vw);margin:auto}.topbar{background:#111;color:#fff;font-size:13px}.topbar .wrap{display:flex;justify-content:space-between;gap:18px;padding:8px 0;flex-wrap:wrap}
.header{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.brand-row{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 0}.logo{display:flex;align-items:center;gap:12px;font-weight:900;font-size:28px;letter-spacing:.5px}.logo-mark{width:44px;height:44px;border-radius:14px;background:#111;color:#fff;display:grid;place-items:center;font-size:18px}.tagline{color:var(--muted);font-size:14px;margin-top:-4px}
.nav{display:flex;gap:8px;flex-wrap:wrap}.nav a{padding:8px 12px;border-radius:999px;background:var(--soft);font-size:14px}.nav a:hover{background:#111;color:#fff}.searchbar{border-top:1px solid var(--line);padding:12px 0;background:#fff}.searchbox{display:flex;gap:10px}.searchbox input{flex:1;border:1px solid var(--line);border-radius:999px;padding:12px 16px;font-size:15px}.searchbox button,.btn{border:0;border-radius:999px;background:#111;color:#fff;padding:12px 18px;cursor:pointer;font-weight:700}.notice{display:none;margin-top:8px;color:var(--muted);font-size:13px}
.hero{display:grid;grid-template-columns:1.35fr .65fr;gap:22px;padding:28px 0}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.04)}.hero-main{padding:24px}.kicker{font-size:13px;color:#555;font-weight:800;letter-spacing:.08em}.h1{font-size:42px;line-height:1.18;margin:10px 0 12px}.lead{font-size:17px;color:#444}.meta{display:flex;gap:12px;flex-wrap:wrap;color:#777;font-size:13px}.grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}
.section{padding:22px 0}.section-title{display:flex;align-items:end;justify-content:space-between;border-bottom:2px solid #111;margin-bottom:16px}.section-title h2{margin:0;padding-bottom:8px;font-size:26px}.section-title span{color:#777;font-size:14px;padding-bottom:10px}.article-card{padding:16px}.article-card h3{font-size:19px;line-height:1.35;margin:10px 0}.article-card p{color:#555;margin:0 0 12px}.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#ddd}.thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .25s}.thumb .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.8);width:58px;height:58px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;opacity:0;transition:.22s;box-shadow:0 8px 20px rgba(0,0,0,.2)}.thumb .play:before{content:"";border-left:18px solid #111;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}.video-card:hover .play{opacity:1;transform:translate(-50%,-50%) scale(1)}.video-card:hover img{transform:scale(1.04)}.stats{display:flex;gap:10px;flex-wrap:wrap;font-size:13px;color:#666}.tag{display:inline-block;background:#f1f1ee;border:1px solid var(--line);border-radius:999px;padding:3px 9px;font-size:12px;margin:3px 4px 3px 0}.rank{counter-reset:item}.rank li{list-style:none;border-bottom:1px solid var(--line);padding:12px 0}.rank li:before{counter-increment:item;content:counter(item);display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#111;color:white;margin-right:8px;font-size:13px}.author{display:flex;gap:12px;align-items:center}.avatar{width:52px;height:52px;border-radius:50%;background:#111;color:#fff;display:grid;place-items:center;font-weight:900}.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:13px 15px;margin-bottom:10px}.faq summary{cursor:pointer;font-weight:800}.comment{padding:15px;border:1px solid var(--line);border-radius:14px;background:#fff}.footer{background:#111;color:#fff;margin-top:34px;padding:30px 0}.footer a{color:#fff}.footer .muted{color:#bbb}.breadcrumb{font-size:14px;color:#777;margin:18px 0}.article-page{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px}.article-page h1{font-size:34px;line-height:1.25}.contact-box{padding:22px;background:#fff;border:1px solid var(--line);border-radius:18px}.json-dump{white-space:pre-wrap;background:#101010;color:#f5f5f5;border-radius:14px;padding:16px;overflow:auto;font-size:13px}
@media(max-width:900px){.hero,.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.h1{font-size:31px}.brand-row{align-items:flex-start;flex-direction:column}.searchbox{flex-direction:column}.searchbox button{width:100%}}