:root{
  --bg:#f5f8ff; --surface:#fff; --text:#10213a; --muted:#5d6b82;
  --blue:#2f6fed; --blue-dark:#1d4fb8; --border:#dbe5f5;
  --shadow:0 16px 42px rgba(31,72,130,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
background:linear-gradient(180deg,#eef4ff 0%,#f8faff 42%,#fff 100%);color:var(--text)}
a{color:var(--blue);text-decoration:none} a:hover{text-decoration:underline}
.container{width:min(1080px,92vw);margin:auto}
header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--text)}
.logo{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(145deg,var(--blue),#6f9cff);color:#fff;font-weight:900;box-shadow:var(--shadow)}
nav a{margin-left:20px;color:var(--text);font-weight:600}
.hero{padding:84px 0 64px;text-align:center}
.eyebrow{display:inline-block;padding:7px 12px;border-radius:999px;background:#e8f0ff;color:var(--blue-dark);font-size:13px;font-weight:700}
h1{font-size:clamp(42px,7vw,72px);line-height:1.02;margin:18px 0;letter-spacing:-.03em}
.hero p{max-width:760px;margin:0 auto;color:var(--muted);font-size:20px;line-height:1.55}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.button{display:inline-block;padding:13px 18px;border-radius:12px;font-weight:700;border:1px solid var(--border);background:var(--surface);color:var(--text)}
.button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:20px 0 70px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:24px;box-shadow:var(--shadow)}
.card h3{margin:0 0 10px;font-size:20px}.card p{margin:0;color:var(--muted);line-height:1.55}
.section{padding:54px 0}.section h2{font-size:34px;margin:0 0 12px}.section .lead{color:var(--muted);font-size:18px;line-height:1.6;max-width:780px}
.page{padding:64px 0 80px}.page h1{font-size:48px}.page h2{margin-top:34px}.page p,.page li{color:var(--muted);line-height:1.7}
.notice{background:#edf4ff;border:1px solid #cfe0ff;border-radius:14px;padding:16px 18px}
footer{border-top:1px solid var(--border);padding:28px 0 42px;color:var(--muted);font-size:14px}
.footer-row{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
code{background:#eef3fb;padding:2px 6px;border-radius:6px}
@media(max-width:780px){.grid{grid-template-columns:1fr}nav a{margin-left:12px}.hero{padding-top:56px}}