:root{--navy:#08263d;--blue:#176b9d;--bg:#f5f8fb;--card:#fff;--text:#172534;--muted:#657585;--line:#dce5ec}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.65}header{background:var(--navy);color:#fff}.wrap{max-width:900px;margin:auto;padding:0 24px}.hero{padding:58px 0 48px}.brand{font-size:38px;font-weight:700;letter-spacing:-.03em;margin:0}.tag{color:#d9e8f2;font-size:18px;margin:8px 0 0}nav{border-top:1px solid rgba(255,255,255,.15)}nav .wrap{display:flex;gap:24px;padding-top:13px;padding-bottom:13px}nav a{color:#fff;text-decoration:none}main{padding:34px 0 60px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px;margin-bottom:20px;box-shadow:0 2px 8px rgba(0,0,0,.03)}h1,h2,h3{line-height:1.25}h2{margin-top:0;color:var(--navy)}h3{color:var(--blue);margin-top:26px}a{color:var(--blue)}.button{display:inline-block;background:var(--navy);color:#fff;text-decoration:none;padding:10px 16px;border-radius:8px}.notice{border-left:4px solid var(--blue);background:#edf6fb;padding:12px 16px;border-radius:6px}.small,footer{color:var(--muted);font-size:14px}footer{text-align:center;padding:0 24px 34px}@media(max-width:600px){.brand{font-size:31px}.hero{padding:42px 0 34px}.card{padding:22px}}