:root{color-scheme:dark;--bg:#080b19;--panel:#151b36;--ink:#f4f6ff;--muted:#aab2da;--yellow:#ffd84a;--cyan:#68e7ff}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#171f43,var(--bg) 420px);color:var(--ink);font:16px/1.7 system-ui,-apple-system,sans-serif}main{max-width:860px;margin:auto;padding:48px 20px 80px}header,section{background:rgba(21,27,54,.92);border:1px solid #303965;border-radius:18px;padding:24px;margin:0 0 16px}h1{margin:0;color:var(--yellow);line-height:1.15}h2{color:var(--cyan);font-size:1.25rem}a{color:var(--cyan)}.meta,.en{color:var(--muted)}nav{margin-top:16px;display:flex;gap:12px;flex-wrap:wrap}.notice{border-left:4px solid var(--yellow);padding-left:14px}.en{border-top:1px solid #303965;margin-top:24px;padding-top:18px}footer{text-align:center;color:var(--muted);padding:20px}