:root {
  --maxw: 920px;
}

/* Main */
.container { max-width: var(--maxw); margin: 24px auto 80px; padding: 0 16px; line-height: 1.8; }
.card { padding: 20px; overflow: visible; }

h1 { font-size: clamp(20px, 4vw, 28px); margin: 0 0 6px; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 24px; }

h2 { font-size: clamp(18px, 3.5vw, 22px); margin: 28px 0 8px; padding-top: 8px; border-top: 1px dashed var(--line); }
h3 { font-size: 18px; margin: 20px 0 6px; }
p { margin: 10px 0; }
ul { margin: 10px 0 10px 1.4em; }
li { margin: 4px 0; }

.toc { border: 1px solid var(--line); background: #fafafa; border-radius: 12px; padding: 12px; }
.toc h3 { margin-top: 0; font-size: 16px; color: #333; }
.toc a { display: inline-block; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; margin: 6px 6px 0 0; background: #fff; font-size: 14px; color: var(--text); text-decoration: none; }
.toc a:hover { text-decoration: underline; }

.note { font-size: 13px; color: var(--muted); }
.footer { margin-top: 40px; color: var(--muted); font-size: 14px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }