:root{--bg:#08112b;--card:#111b45;--text:#f6f8ff;--muted:#c4cbe0;--line:#2bbbd3;--accent:#60d6e7}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:linear-gradient(180deg,#08112b,#0e1740);color:var(--text);line-height:1.68}a{color:#8ceafa}header,main,footer{width:min(980px,calc(100% - 32px));margin:auto}header{padding:24px 0 10px}.brand{font-weight:800;font-size:1.15rem;text-decoration:none;color:#fff}.breadcrumb{font-size:.92rem;color:var(--muted);margin:18px 0}.breadcrumb a{color:var(--muted)}article{background:rgba(17,27,69,.92);border:1px solid rgba(43,187,211,.35);border-radius:22px;padding:clamp(22px,4vw,46px);box-shadow:0 24px 80px rgba(0,0,0,.18)}h1{font-size:clamp(2rem,5vw,3.2rem);line-height:1.12;margin:.2em 0 .45em}h2{margin-top:2em;line-height:1.2}p,li{font-size:1.04rem}.summary{border-left:4px solid var(--accent);background:rgba(255,255,255,.05);padding:16px 18px;border-radius:10px;margin:24px 0}.meta{color:var(--muted);font-size:.92rem}.checklist{padding-left:1.25rem}.checklist li{margin:.55rem 0}.cta{display:inline-block;margin:24px 0 8px;padding:13px 18px;border-radius:12px;background:#fff;color:#0c1640;text-decoration:none;font-weight:800}.notice{margin-top:24px;padding:14px 16px;border:1px solid rgba(255,255,255,.18);border-radius:12px;color:var(--muted)}footer{padding:28px 0 44px;color:var(--muted);font-size:.92rem}.langs{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.langs a{background:rgba(255,255,255,.07);padding:7px 10px;border-radius:9px;text-decoration:none}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}.guide-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:16px}.guide-card h2{margin:.2rem 0 .5rem;font-size:1.08rem}