:root, [data-theme="light"] {
  --canvas: #eef2f0;
  --surface: #ffffff;
  --surface-muted: #f6f8f7;
  --surface-inverse: #12211b;
  --line: #dce3e0;
  --line-strong: #788983;
  --scrim: rgba(18, 33, 27, 0.55);
  --ink: #12211b;
  --ink-muted: #4f605a;
  --ink-disabled: #788983;
  --ink-inverse: #f2f7f4;
  --brand: #0f7a52;
  --brand-strong: #0a5c3d;
  --brand-ink: #0a5138;
  --brand-soft: #e2f1ea;
  --on-brand: #ffffff;
  --danger: #b42318;
  --danger-soft: #fdecea;
  --on-danger: #ffffff;
  --warning: #8a5300;
  --warning-soft: #fcf1de;
  --info: #17558f;
  --info-soft: #e9f1f9;
  --saving: var(--brand-ink);
  --focus: #0a3f2b;
  --shadow-card: 0 1px 2px rgba(18, 33, 27, 0.06), 0 1px 3px rgba(18, 33, 27, 0.08);
  --shadow-pop: 0 8px 24px rgba(18, 33, 27, 0.16);
  --shadow-bar: 0 -2px 12px rgba(18, 33, 27, 0.10);
}

:root {
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-pill: 999px;
  --control-sm: 32px;
  --control: 44px;
  --control-lg: 52px;
  --icon: 20px;
  --icon-lg: 24px;
  --tile-icon: 56px;
  --measure: 640px;
  --sheet: 880px;
  --font-sans: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}

.display { font-family: var(--font-sans); font-size: 32px; line-height: 38px; font-weight: 600; letter-spacing: -0.01em; }
.title-lg { font-family: var(--font-sans); font-size: 24px; line-height: 30px; font-weight: 600; }
.title { font-family: var(--font-sans); font-size: 19px; line-height: 26px; font-weight: 600; }
.title-sm { font-family: var(--font-sans); font-size: 16px; line-height: 22px; font-weight: 600; }
.body { font-family: var(--font-sans); font-size: 15px; line-height: 22px; font-weight: 400; }
.body-strong { font-family: var(--font-sans); font-size: 15px; line-height: 22px; font-weight: 600; }
.small { font-family: var(--font-sans); font-size: 13px; line-height: 18px; font-weight: 400; }
.small-strong { font-family: var(--font-sans); font-size: 13px; line-height: 18px; font-weight: 600; }
.label { font-family: var(--font-sans); font-size: 13px; line-height: 16px; font-weight: 600; letter-spacing: 0.01em; }
.overline { font-family: var(--font-sans); font-size: 11px; line-height: 14px; font-weight: 600; letter-spacing: 0.08em; }
.figure-xl { font-family: var(--font-mono); font-size: 30px; line-height: 36px; font-weight: 600; }
.figure { font-family: var(--font-mono); font-size: 16px; line-height: 22px; font-weight: 500; }
.figure-sm { font-family: var(--font-mono); font-size: 13px; line-height: 18px; font-weight: 500; }
.ref { font-family: var(--font-mono); font-size: 12px; line-height: 16px; font-weight: 500; letter-spacing: 0.04em; }