:root{--bg:#1B1226;--card:#2A1E38;--primary:#FF8A3D;--text:#F5EDE4;--muted:#B8A9C9;--accent:#FFC93D;--border:#3A2B4D}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.6}
.wrap{max-width:760px;margin:0 auto;padding:24px}
header.site{display:flex;align-items:center;gap:12px;padding:20px 0}
header.site img{width:44px;height:44px;border-radius:13px}
header.site .name{font-size:1.15rem;font-weight:800;letter-spacing:.3px}
nav.site{margin-left:auto;display:flex;gap:18px;font-size:.9rem}
nav.site a{color:var(--muted);text-decoration:none}
nav.site a:hover{color:var(--text)}
h1{font-size:2.1rem;line-height:1.25;margin:18px 0 10px}
h2{font-size:1.45rem;margin:38px 0 12px}
h3{font-size:1.1rem;margin:26px 0 8px}
p{margin:12px 0}
.lead{font-size:1.15rem;color:var(--muted)}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}
.btn{display:inline-block;padding:15px 26px;border-radius:14px;font-weight:700;text-decoration:none}
.btn-primary{background:var(--primary);color:#3D1E00}
.btn-outline{border:1px solid var(--border);color:var(--text)}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:22px 0}
.step{background:var(--card);border-radius:14px;padding:16px}
.step b{color:var(--accent);display:block;margin-bottom:4px}
ul{padding-left:20px}li{margin:7px 0}
.grid-demo{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0}
.cell{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px;font-size:.92rem;font-weight:600}
details{background:var(--card);border-radius:12px;padding:14px 16px;margin:10px 0}
summary{cursor:pointer;font-weight:700}
details p{color:var(--muted);margin:10px 0 0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin:20px 0}
.cardlink{display:block;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px;text-decoration:none;color:var(--text)}
.cardlink:hover{border-color:var(--primary)}
.cardlink span{display:block;color:var(--muted);font-size:.86rem;margin-top:4px}
footer.site{border-top:1px solid var(--border);margin-top:50px;padding:24px 0;color:var(--muted);font-size:.87rem}
footer.site a{color:var(--muted)}