:root{
  --primary: #0f62fe;
  --accent: #ffb000;
  --dark-bg: #0b0d17;
  --light-bg: #ffffff;
  --text: #0f172a;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Helvetica Neue','Noto Sans',Arial,'Apple Color Emoji','Segoe UI Emoji';color:var(--text);background:var(--light-bg);}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:0 1rem}
.nav{display:flex;gap:1rem;align-items:center;justify-content:space-between;padding:1rem 0}
.nav a.brand{font-weight:800;font-size:1.25rem;color:var(--text)}
.nav ul{display:flex;gap:1rem;list-style:none;margin:0;padding:0}
.btn{display:inline-flex;align-items:center;gap:.5rem;background:var(--primary);color:white;padding:.7rem 1rem;border-radius:.75rem;border:0;cursor:pointer}
.btn.secondary{background:var(--accent);color:#111}
.hero{background:linear-gradient(180deg,var(--light-bg),#f7fafc);padding:4rem 0}
.hero h1{font-size:clamp(1.8rem,4vw,3rem);margin:.5rem 0}
.hero p{max-width:60ch;opacity:.85}
.hero .cta{margin-top:1.25rem;display:flex;gap:.75rem;flex-wrap:wrap}
.grid{display:grid;gap:1rem}
.grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:white;border:1px solid #e5e7eb;border-radius:1rem;padding:1rem;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.card h3{margin:.4rem 0}
.muted{opacity:.8}
footer{margin-top:3rem;border-top:1px solid #e5e7eb}
.footer-inner{padding:2rem 0;display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between}
.kicker{display:inline-block;font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:.75rem;color:var(--primary)}
.header-sticky{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);z-index:50;border-bottom:1px solid #f1f5f9}
.section{padding:3rem 0}
.section h2{font-size:1.5rem;margin-bottom:1rem}
.badge{display:inline-block;background:#eef2ff;color:#3730a3;border:1px solid #e0e7ff;padding:.2rem .5rem;border-radius:.5rem;font-weight:600;font-size:.75rem}
.level{display:flex;flex-direction:column;gap:.5rem}
.level p{margin:0}
.notice{background:#fff7ed;border:1px solid #fed7aa;border-radius:.75rem;padding:1rem}
.highlight{background:linear-gradient(90deg,rgba(255,176,0,.15),transparent);padding:.1rem .25rem;border-radius:.25rem}
code{background:#f8fafc;border:1px solid #e5e7eb;padding:.1rem .3rem;border-radius:.3rem}