*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#171717;background:#fff;line-height:1.7}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}.narrow{max-width:760px}.site-header{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid #ececec;z-index:10}.nav{height:68px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:800;font-size:22px;color:#111;text-decoration:none}.brand span{font-size:11px;font-weight:600;letter-spacing:.16em;margin-left:8px;color:#777}.nav nav{display:flex;gap:22px}.nav nav a,.footer a{color:#444;text-decoration:none}.hero{padding:96px 0 72px;background:linear-gradient(180deg,#f7f8fa,#fff)}.hero-grid{display:grid;grid-template-columns:1.4fr .8fr;gap:56px;align-items:center}.eyebrow{font-size:12px;letter-spacing:.18em;font-weight:800;color:#666}h1{font-size:clamp(38px,6vw,72px);line-height:1.08;letter-spacing:-.03em;margin:.2em 0 .35em}h2{font-size:34px;margin:.15em 0 .7em}h3{font-size:24px;margin-top:0}.lead{font-size:18px;color:#555;max-width:700px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-block;padding:11px 18px;border:1px solid #d6d6d6;border-radius:10px;background:#fff;color:#111;text-decoration:none;font:inherit}.btn.primary{background:#111;color:#fff;border-color:#111}.btn.disabled{opacity:.5;cursor:not-allowed}.card{border:1px solid #e7e7e7;border-radius:18px;background:#fff;padding:28px;box-shadow:0 10px 30px rgba(0,0,0,.04)}.hero-card ul{padding-left:18px;color:#555}.status-dot{width:10px;height:10px;border-radius:50%;background:#111;display:inline-block;margin-right:8px}.section{padding:80px 0}.section.alt{background:#f7f8fa}.product-grid{display:grid;grid-template-columns:1fr}.product{display:grid;grid-template-columns:180px 1fr;gap:28px;align-items:center}.thumb{height:130px;border-radius:14px;background:#111;color:#fff;display:grid;place-items:center;font-weight:800;font-size:30px;letter-spacing:.08em}.muted{color:#777}.footer{padding:26px 0;border-top:1px solid #eee;display:flex;justify-content:space-between;color:#777;font-size:14px}@media(max-width:760px){.nav nav{gap:12px;font-size:14px}.brand span{display:none}.hero{padding-top:64px}.hero-grid{grid-template-columns:1fr}.product{grid-template-columns:1fr}.thumb{height:160px}.footer{flex-direction:column;gap:8px}}