:root{--bg:#f6f8fb;--card:#fff;--text:#182033;--muted:#667085;--line:#e6eaf0;--brand:#2457d6;--brand2:#16a085;--soft:#eef4ff;--dark:#101828}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',Arial,sans-serif;color:var(--text);line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.topbar{background:var(--dark);color:#fff;font-size:13px}.wrap{max-width:1200px;margin:auto;padding:0 18px}.topbar .wrap,.nav{display:flex;align-items:center;justify-content:space-between;gap:14px}.topbar .wrap{padding-top:8px;padding-bottom:8px}.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:24px;color:var(--brand)}.logo-mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:#fff;box-shadow:0 8px 22px rgba(36,87,214,.18)}nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap}nav a{padding:18px 10px;font-weight:700;font-size:14px;color:#344054}nav a:hover{color:var(--brand)}.search-row{background:#fff;border-bottom:1px solid var(--line);padding:14px 0}.search-box{display:grid;grid-template-columns:1fr auto;gap:10px}.search-box input{border:1px solid var(--line);border-radius:14px;padding:12px 14px;font-size:15px}.btn{background:var(--brand);color:#fff;border:0;border-radius:14px;padding:12px 18px;font-weight:800;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn.secondary{background:#eef4ff;color:var(--brand)}.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--line)}.hero{padding:26px 0 18px}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}.hero-main,.panel,.card{background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:0 10px 30px rgba(16,24,40,.04)}.hero-main{padding:28px;overflow:hidden;position:relative}.eyebrow{display:inline-flex;gap:8px;align-items:center;background:var(--soft);color:var(--brand);border-radius:999px;padding:6px 12px;font-weight:800;font-size:13px}.hero h1{font-size:34px;line-height:1.25;margin:16px 0 10px}.hero p{color:var(--muted);margin:0 0 18px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:18px}.stat{background:#f8fbff;border:1px solid var(--line);border-radius:16px;padding:12px}.stat strong{display:block;font-size:20px;color:var(--brand)}.hot-list{padding:18px}.hot-list h2,.section-head h2{margin:0;font-size:22px}.hot-item{display:flex;gap:12px;border-top:1px solid var(--line);padding:13px 0}.hot-item:first-of-type{border-top:0}.rank{min-width:30px;height:30px;border-radius:10px;background:#fff2e8;color:#d46b08;display:grid;place-items:center;font-weight:900}.meta{font-size:13px;color:var(--muted)}main{padding-bottom:36px}.section{margin-top:22px}.section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:12px}.section-head p{margin:4px 0 0;color:var(--muted)}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.card{padding:16px}.video-card{padding:0;overflow:hidden}.thumb{position:relative;background:#dce6f5;aspect-ratio:16/9;overflow:hidden}.thumb img{width:100%;height:100%;object-fit:cover}.play{position:absolute;inset:0;display:grid;place-items:center;background:rgba(16,24,40,.08);opacity:0;transition:.2s}.play span{width:58px;height:58px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;color:var(--brand);font-weight:900;font-size:22px}.video-card:hover .play{opacity:1}.tag{display:inline-block;background:#f2f4f7;color:#475467;border-radius:999px;padding:3px 9px;font-size:12px;margin:4px 4px 0 0}.card h3{margin:10px 0 7px;font-size:18px}.card p{color:var(--muted);margin:0 0 10px}.action-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.action-row button,.action-row a{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 10px;font-size:13px;color:#475467;cursor:pointer}.author{display:flex;gap:12px;align-items:center}.avatar{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#e8f2ff,#d2f5ec);display:grid;place-items:center;color:var(--brand);font-weight:900}.notice{border-left:4px solid var(--brand);background:#fff;padding:14px;border-radius:14px;color:#475467}.list-clean{list-style:none;padding:0;margin:0}.list-clean li{padding:10px 0;border-top:1px dashed var(--line)}.list-clean li:first-child{border-top:0}.faq details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;margin-bottom:10px}.faq summary{font-weight:800;cursor:pointer}.remark{display:flex;gap:12px}.footer{background:#101828;color:#d0d5dd;margin-top:34px;padding:30px 0}.footer .logo{color:#fff}.footer a{color:#fff}.foot-grid{display:grid;grid-template-columns:1.2fr repeat(3,1fr);gap:18px}.crumb{font-size:13px;color:var(--muted);margin:18px 0}.page-title{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;margin-bottom:18px}.domain-text{font-weight:800;color:var(--brand)}.share-box{display:flex;flex-wrap:wrap;gap:10px}.share-box button{border:1px solid var(--line);border-radius:12px;background:#fff;padding:10px 14px;cursor:pointer}.table-like{display:grid;gap:10px}.row{display:grid;grid-template-columns:1fr auto;gap:10px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px}.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%);background:#101828;color:#fff;padding:10px 16px;border-radius:999px;display:none;z-index:50}.lazy-note{font-size:12px;color:var(--muted)}@media(max-width:860px){.hero-grid,.grid-3,.grid-4,.grid-2,.foot-grid{grid-template-columns:1fr}.stats{grid-template-columns:repeat(2,1fr)}nav{display:none}.hero h1{font-size:27px}.section-head{align-items:flex-start;flex-direction:column}.search-box{grid-template-columns:1fr}.wrap{padding:0 14px}}