:root {
  --bg: #fafaf9; --fg: #1c1917; --muted: #78716c; --card: #fff;
  --line: #e7e5e4; --accent: #2563eb;
}
:root[data-theme="dark"] {
  --bg: #0c0a09; --fg: #f5f5f4; --muted: #a8a29e; --card: #1c1917;
  --line: #292524;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 16px; }
.bar { display: flex; justify-content: space-between; align-items: center; padding-top: 16px; padding-bottom: 16px; }
.brand { font-weight: 700; color: var(--fg); text-decoration: none; }
.hero { padding: 64px 0 32px; }
.hero h1 { font-size: clamp(2rem, 6vw, 3rem); margin: 0 0 8px; }
.lead { font-size: 1.2rem; color: var(--muted); margin: 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
.card h2 { margin-top: 0; }
form { display: flex; gap: 8px; flex-wrap: wrap; }
input { flex: 1 1 220px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); font: inherit; }
button { padding: 10px 16px; border: 0; border-radius: 8px; background: var(--accent); color: #fff; font: inherit; cursor: pointer; }
button.ghost { background: transparent; color: var(--fg); border: 1px solid var(--line); }
.muted { color: var(--muted); }
footer.wrap { padding-top: 48px; padding-bottom: 32px; font-size: .9rem; }

.tool { margin-bottom: 24px; }
.check { display: flex; gap: 10px; align-items: flex-start; padding: 8px 0; border-bottom: 1px solid var(--line); cursor: pointer; }
.check input { flex: none; width: 18px; height: 18px; margin-top: 4px; accent-color: var(--accent); }
.meter { height: 10px; background: var(--line); border-radius: 99px; overflow: hidden; margin: 12px 0; }
.meter > div { height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.big { font-size: 2rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.grid > div { border: 1px solid var(--line); border-radius: 8px; padding: 12px; }