:root{--bg:#f7f8fb;--card:#fff;--text:#172033;--muted:#667085;--line:#e6e9f0;--brand:#202a44;--soft:#eef3ff;--accent:#ffb547;--ok:#16a34a}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.72}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,92vw);margin:0 auto}.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.nav{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:16px 0}.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:22px;color:var(--brand)}.logo-mark{width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,var(--brand),#4b5f93);display:grid;place-items:center;color:#fff;font-size:18px}.navlinks{display:flex;gap:18px;align-items:center;flex-wrap:wrap;font-size:15px}.navlinks a{color:#344054}.navlinks a:hover{color:#0b50d8}.domain-pill{padding:7px 12px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:#fafafa}.search-row{border-top:1px solid var(--line);padding:12px 0;background:#fff}.fake-search{display:flex;gap:10px}.fake-search input{flex:1;border:1px solid var(--line);border-radius:14px;padding:13px 16px;font-size:15px}.btn,.fake-search button{border:0;border-radius:14px;padding:13px 20px;background:var(--brand);color:#fff;font-weight:700;cursor:pointer}.btn.secondary{background:#fff;color:var(--brand);border:1px solid var(--line)}.hero{padding:56px 0 26px;background:linear-gradient(180deg,#fff, #f6f8ff)}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}.eyebrow{display:inline-flex;gap:8px;align-items:center;padding:6px 12px;background:var(--soft);border-radius:999px;color:#3150a8;font-weight:700;font-size:14px}.hero h1{font-size:46px;line-height:1.15;margin:18px 0 16px;letter-spacing:-.8px}.lead{font-size:18px;color:var(--muted);margin:0 0 24px}.cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:18px}.trust{display:flex;gap:16px;flex-wrap:wrap;color:#475467;font-size:14px}.trust b{color:var(--text)}.hero-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:18px;box-shadow:0 18px 45px rgba(27,39,70,.08)}.video-card{position:relative;overflow:hidden;border-radius:22px;background:#0f172a;min-height:240px}.video-card img{width:100%;height:100%;object-fit:cover;opacity:.82}.play{position:absolute;inset:0;display:grid;place-items:center;background:rgba(15,23,42,.15);transition:.25s}.play span{width:70px;height:70px;border-radius:50%;background:rgba(255,255,255,.9);display:grid;place-items:center;color:var(--brand);font-size:26px;transform:scale(.92);transition:.25s}.video-card:hover .play{background:rgba(15,23,42,.35)}.video-card:hover .play span{transform:scale(1.05)}.video-meta{display:flex;justify-content:space-between;gap:12px;padding:14px 4px 0;color:#475467;font-size:14px}.section{padding:50px 0}.section h2{font-size:32px;margin:0 0 10px}.section-intro{color:var(--muted);margin:0 0 24px}.grid{display:grid;gap:18px}.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-4{grid-template-columns:repeat(4,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 10px 24px rgba(27,39,70,.04)}.card h3{margin:0 0 8px;font-size:20px}.card p{margin:0;color:var(--muted)}.tag-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.tag{font-size:13px;background:#f2f4f7;border:1px solid #eaecf0;border-radius:999px;padding:4px 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h2{font-size:26px}.row{grid-template-columns:1fr}.btn,.fake-search button{width:100%}}