:root { --bg:#0a0b0d; --surface:#131418; --text:#f4f5f7; --muted:#a9adb6; --accent:#f59e0b; --accent-ink:#1a1204; --line:rgba(255,255,255,.11); }
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
header { border-bottom: 1px solid var(--line); }
.bar { max-width: 820px; margin: 0 auto; padding: 0 16px; height: 72px; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; letter-spacing: -.02em; text-decoration: none; color: var(--text); }
.logo-mark { width: 34px; height: 34px; border-radius: 9px; background: var(--accent); display: grid; place-items: center; color: var(--accent-ink); }
.logo b { color: var(--accent); }
.back { color: var(--muted); text-decoration: none; font-size: 15px; display: inline-flex; align-items: center; gap: 6px; min-height: 44px; }
.back:hover { color: var(--text); }
main { max-width: 820px; margin: 0 auto; padding: 56px 16px 80px; }
h1 { font-size: clamp(32px, 5vw, 44px); letter-spacing: -.03em; line-height: 1.1; margin-bottom: 32px; }
h2 { font-size: 21px; margin: 40px 0 10px; letter-spacing: -.01em; }
p, ul { color: var(--muted); margin-bottom: 12px; }
ul { padding-left: 22px; }
strong { color: var(--text); font-weight: 600; }
.box { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 24px; margin-bottom: 12px; }
.box p { margin: 0; }
.todo { border: 1px dashed rgba(245,158,11,.7); background: rgba(245,158,11,.08); border-radius: 10px; padding: 12px 16px; color: var(--text); }
footer { border-top: 1px solid var(--line); padding: 28px 16px; text-align: center; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); }