:root {
  color-scheme: light;
  --bg: #f7f7f9;
  --fg: #1d1b24;
  --muted: #5d5a68;
  --accent: #6a45f2;
  --card: #ffffff;
  --border: #e3e1ea;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.45 system-ui, -apple-system, sans-serif; }
main { max-width: 560px; margin: 0 auto; padding: 16px; }
h1 { font-size: 22px; margin: 8px 0 4px; }
h2 { font-size: 16px; margin: 0 0 8px; }
section { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; margin: 12px 0; }
.note, .hint { color: var(--muted); font-size: 14px; }
.hint { margin: 8px 0 0; }
dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; margin: 0; font-size: 14px; }
dt { color: var(--muted); }
dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.buttons { display: flex; flex-direction: column; gap: 8px; }
button { min-height: 44px; border: 0; border-radius: 10px; background: var(--accent); color: #fff; font: inherit; font-weight: 600; padding: 0 14px; }
button.secondary { background: #ecebf2; color: var(--fg); }
button:disabled { opacity: 0.5; }
label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 6px; }
input { width: 100%; min-height: 44px; border: 1px solid var(--border); border-radius: 10px; padding: 0 12px; font: inherit; letter-spacing: 0.08em; }
#log { margin: 10px 0 0; padding-left: 22px; font: 13px/1.4 ui-monospace, monospace; }
#log li { margin-bottom: 4px; overflow-wrap: anywhere; }