:root{--bg:#061426;--card:#0d2438;--line:#1b4b68;--cyan:#22d3ee;--green:#39f36a;--text:#f8fafc;--muted:#b1c6d6;--amber:#fbbf24}*{box-sizing:border-box}body{margin:0;background:linear-gradient(135deg,#04101f,#092d46);color:var(--text);font:16px/1.65 Inter,system-ui,sans-serif}header{border-bottom:1px solid var(--line);background:#061426eF;position:sticky;top:0;z-index:2}.bar,main,footer{width:min(920px,calc(100% - 32px));margin:auto}.bar{display:flex;align-items:center;justify-content:space-between;padding:14px 0}.brand{font-size:22px;font-weight:900;color:white;text-decoration:none}.brand span{color:var(--cyan)}nav a,footer a{color:var(--cyan);margin-left:12px}main{padding:48px 0 60px}h1{font-size:clamp(30px,6vw,48px);line-height:1.08;margin:0 0 10px}h2{font-size:22px;margin-top:34px;color:#dffaff}h3{font-size:17px;color:var(--cyan)}p,li{color:var(--muted)}strong{color:var(--text)}.meta{color:var(--cyan);font-weight:800}.notice{padding:18px;border:1px solid #b98518;background:#2c250e;border-radius:16px;color:#ffe59a;margin:24px 0}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;margin:20px 0}.toc a{display:block;color:var(--cyan);padding:4px 0}footer{padding:25px 0 40px;border-top:1px solid var(--line);color:#7897ad;font-size:13px}@media(max-width:640px){nav{display:none}main{padding-top:30px}.card{padding:17px}ol,ul{padding-left:22px}}