:root{color-scheme:dark;--bg:#0b0f1d;--surface:#121829;--text:#f4f5fb;--muted:#b5bfd8;--border:#303952;--primary:#6366F1}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,sans-serif;line-height:1.65}main{max-width:780px;margin:auto;padding:32px 20px 64px}nav{display:flex;gap:24px;flex-wrap:wrap;margin-bottom:32px}a{color:#b3b5ff;text-underline-offset:4px}a:focus-visible{outline:2px solid var(--primary);outline-offset:5px}h1{font-size:clamp(28px,5vw,40px);line-height:1.2}h2{margin-top:32px;font-size:22px}p,li{color:var(--muted)}.notice{padding:16px;border:1px solid var(--border);border-left:3px solid var(--primary);background:var(--surface);border-radius:12px}.brand{font-weight:700;letter-spacing:.1em;font-size:12px;color:var(--text)}footer{margin-top:40px;border-top:1px solid var(--border);padding-top:20px;font-size:14px}strong{color:var(--text)}