:root{--ink:#1d1d1f;--muted:#666;--paper:#f9f7f5;--red:#bf3d2d}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,sans-serif;line-height:1.75}a{color:var(--red)}header,main,footer{max-width:880px;margin:auto;padding:24px}.brand{font-weight:800;text-decoration:none;color:var(--ink)}nav[aria-label="面包屑"]{font-size:13px;color:var(--muted);margin-top:8px}nav[aria-label="面包屑"] a{color:var(--muted);text-decoration:none}nav[aria-label="面包屑"] span{color:var(--ink)}.hero{padding:64px 0 28px}.eyebrow{color:var(--red);font-size:13px;font-weight:800;letter-spacing:.12em}h1{font-size:clamp(34px,7vw,60px);line-height:1.12;letter-spacing:-.04em}h2{font-size:26px;margin-top:44px}p{font-size:17px}.lead{font-size:20px;color:var(--muted)}.card{display:block;background:#fff;border:1px solid #eee7e1;border-radius:24px;padding:24px;margin:24px 0;text-decoration:none;color:var(--ink)}.example{border-left:4px solid var(--red)}.cta{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;border-radius:99px;padding:14px 22px;font-weight:700}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}.small{font-size:14px;color:var(--muted)}footer{border-top:1px solid #e8e1db;margin-top:60px}@media(max-width:600px){header,main,footer{padding:18px}.hero{padding-top:38px}.card{padding:19px}}