:root { --primary:#2563EB; --text:#1f2937; --bg:#ffffff; --muted:#f8fafc; }
*{box-sizing:border-box} body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Helvetica Neue',Arial,'Noto Sans',sans-serif;line-height:1.6;color:var(--text);background:var(--bg)}
.container{max-width:860px;margin:0 auto;padding:28px}
.hero{padding:60px 0;text-align:center;background:linear-gradient(180deg,#ffffff 0%,#eef2ff 100%)}
h1{font-size:clamp(28px,4vw,40px);margin:0 0 12px}
.lead{font-size:clamp(18px,2.2vw,22px);opacity:.9;margin:0 auto 18px;max-width:720px}
.btn{display:inline-block;background:var(--primary);color:#fff;text-decoration:none;padding:14px 22px;border-radius:10px;font-weight:600}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:16px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.footer{font-size:14px;opacity:.7;text-align:center;margin-top:28px}
.notice{background:var(--muted);border:1px solid #e5e7eb;border-radius:10px;padding:12px;margin-top:16px}