:root{color-scheme:dark;--bg:#050810;--card:#0d1320;--text:#f4f7fb;--muted:#9aa7ba;--border:#202a3a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,sans-serif;line-height:1.65}main{max-width:900px;margin:auto;padding:48px 22px 80px}header{margin-bottom:36px}.brand{font-size:30px;font-weight:800}.tag,footer{color:var(--muted)}section{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:24px;margin:18px 0}h1{font-size:38px}h2{font-size:21px;margin-top:0}a{color:#b9a4ff}.nav{display:flex;gap:16px;margin-top:18px}li{margin:7px 0}