:root {
  --bg: #f4f6f5;
  --card: #ffffff;
  --text: #17201d;
  --muted: #5f6b67;
  --line: #dde3e0;
  --accent: #0f766e;
  --accent-soft: #d8efec;
  --up: #15803d;
  --down: #b45309;
  --danger: #b91c1c;
  --done: #e7f4ea;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101413;
    --card: #1a201e;
    --text: #e6ece9;
    --muted: #97a39f;
    --line: #2c3532;
    --accent: #2dd4bf;
    --accent-soft: #163a36;
    --up: #4ade80;
    --down: #fbbf24;
    --danger: #f87171;
    --done: #18301f;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
}
.top {
  display: flex; align-items: baseline; gap: 10px;
  padding: 14px 16px 6px; max-width: 640px; margin: 0 auto;
}
.top h1 { font-size: 20px; margin: 0; }
main { max-width: 640px; margin: 0 auto; padding: 4px 12px 24px; }
h2 { font-size: 18px; margin: 0 0 8px; }
h3 { font-size: 16px; margin: 0; }
p { margin: 6px 0; }
.muted { color: var(--muted); font-size: 14px; }
.small { font-size: 13px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px; margin: 10px 0;
}
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 8px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 10px; }
label { display: block; font-size: 14px; color: var(--muted); }
label > input, label > select { margin-top: 4px; }
input[type=number], input[type=text], input[type=date], select, textarea {
  width: 100%; font: inherit; font-size: 16px; color: var(--text); background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 10px;
}
textarea { min-height: 110px; font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
.check-label { display: flex; align-items: center; gap: 8px; color: var(--text); font-size: 15px; padding: 6px 0; }
.check-label input { width: 20px; height: 20px; accent-color: var(--accent); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  border: 1px solid var(--line); background: var(--bg); color: var(--text);
  border-radius: 999px; padding: 6px 12px; font: inherit; font-size: 14px; cursor: pointer;
}
.chip.on { background: var(--accent); border-color: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) { .chip.on { color: #06201d; } }
button { font: inherit; cursor: pointer; }
.primary {
  width: 100%; border: 0; border-radius: 10px; padding: 13px; font-size: 17px; font-weight: 600;
  background: var(--accent); color: #fff; margin-top: 10px;
}
@media (prefers-color-scheme: dark) { .primary { color: #06201d; } }
.ghost {
  border: 1px solid var(--line); background: transparent; color: var(--text);
  border-radius: 8px; padding: 9px 12px;
}
.ghost.sm, .sm { padding: 5px 10px; font-size: 14px; }
.ghost.danger { color: var(--danger); border-color: var(--danger); }
.wide { width: 100%; margin-top: 8px; }
.link { background: none; border: 0; padding: 0; color: var(--accent); font-size: 16px; text-align: left; }
.steps { padding-left: 0; list-style: none; margin: 8px 0 0; }
.steps li { display: flex; justify-content: space-between; padding: 10px 0; border-top: 1px solid var(--line); }
.steps li.done span { color: var(--up); font-weight: 600; }
.ex-head { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.tag { font-size: 13px; color: var(--accent); background: var(--accent-soft); border-radius: 6px; padding: 2px 8px; white-space: nowrap; }
.hint { font-size: 14px; color: var(--muted); }
.hint.up { color: var(--up); }
.hint.down { color: var(--down); }
.warn { color: var(--down); font-size: 14px; }
details { margin-top: 6px; }
summary { cursor: pointer; color: var(--accent); font-size: 14px; }
details ol { margin: 6px 0; padding-left: 20px; font-size: 14px; }
.calib { font-size: 14px; background: var(--accent-soft); border-radius: 8px; padding: 8px 10px; margin: 6px 0; }
.calib ol { margin: 4px 0 0; padding-left: 18px; }
.sets { margin-top: 8px; }
.set-row { display: grid; grid-template-columns: 34px 1fr 1fr 48px; gap: 6px; align-items: center; padding: 3px 0; }
.set-row.head { font-size: 12px; color: var(--muted); }
.set-row .n { text-align: center; color: var(--muted); }
.set-row input { padding: 8px; text-align: center; }
.set-row.done input { background: var(--done); }
.check {
  height: 40px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg);
  color: var(--muted); font-size: 18px;
}
.set-row.done .check { background: var(--up); border-color: var(--up); color: #fff; }
.item { padding: 10px 0; border-top: 1px solid var(--line); }
.item:first-of-type { border-top: 0; }
.item-head { display: flex; justify-content: space-between; gap: 8px; align-items: flex-start; }
.item .sub { font-size: 13px; color: var(--muted); }
.item-head > button, .sess > button { white-space: nowrap; flex-shrink: 0; }
.calib summary { color: var(--text); font-weight: 600; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; font-size: 15px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
.group-head { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; }
.group-head h3 { font-size: 15px; }
.eq-list { display: grid; grid-template-columns: 1fr; }
@media (min-width: 520px) { .eq-list { grid-template-columns: 1fr 1fr; } }
.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--card); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); z-index: 5;
}
.tabs button { border: 0; background: none; color: var(--muted); padding: 12px 0 14px; font-size: 14px; }
.tabs button.on { color: var(--accent); font-weight: 700; }
.rest {
  position: fixed; left: 0; right: 0; bottom: calc(52px + env(safe-area-inset-bottom)); z-index: 6;
  display: flex; gap: 10px; align-items: center; justify-content: center;
  background: var(--card); border-top: 1px solid var(--line); padding: 10px 12px; overflow: hidden;
}
.rest strong { font-size: 22px; font-variant-numeric: tabular-nums; }
.rest-fill { position: absolute; left: 0; top: 0; height: 3px; background: var(--accent); }
.toast {
  position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(120px + env(safe-area-inset-bottom));
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-size: 15px;
  max-width: calc(100% - 32px); z-index: 10; text-align: center;
}
.hist-line { font-size: 14px; padding: 2px 0; }
.sess { display: flex; justify-content: space-between; gap: 8px; align-items: center; padding: 8px 0; border-top: 1px solid var(--line); }
.big { font-size: 22px; font-weight: 700; }