:root {
  --bg: #f6f2ec;
  --bg-panel: #fffdfa;
  --bg-sunk: #efe8df;
  --ink: #22190f;
  --ink-soft: #6b5c4a;
  --ink-faint: #9a8a76;
  --line: #e0d6c8;
  --accent: #9a4d1f;
  --accent-soft: #f0dfd2;
  --gh: #2f6f5e;
  --gh-soft: #d8ebe4;
  --kh: #3f5a9c;
  --kh-soft: #dde4f4;
  --warn: #8a5a12;
  --warn-soft: #f7ecd6;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(60, 40, 20, .06), 0 8px 24px rgba(60, 40, 20, .05);
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #16120e;
  --bg-panel: #211b16;
  --bg-sunk: #100d0a;
  --ink: #f3ebe0;
  --ink-soft: #b6a693;
  --ink-faint: #7e7060;
  --line: #362d25;
  --accent: #e08c4e;
  --accent-soft: #3a2a1c;
  --gh: #6dc4a8;
  --gh-soft: #1c2f29;
  --kh: #8fa9e8;
  --kh-soft: #1e2436;
  --warn: #e0b464;
  --warn-soft: #322815;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 ui-sans-serif, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ── top bar ─────────────────────────────────────────────── */
.topbar {
  border-bottom: 1px solid var(--line);
  background: var(--bg-panel);
  position: sticky; top: 0; z-index: 20;
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  font-size: 26px; line-height: 1; color: var(--accent);
  background: var(--accent-soft); width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center; flex: none;
}
h1 { font-size: 17px; margin: 0; letter-spacing: -.01em; }
.tagline { margin: 1px 0 0; font-size: 12.5px; color: var(--ink-soft); }

.ghost-btn {
  font: inherit; font-size: 13px; color: var(--ink-soft);
  background: transparent; border: 1px solid var(--line);
  padding: 7px 12px; border-radius: 8px; cursor: pointer;
}
.ghost-btn:hover { background: var(--bg-sunk); color: var(--ink); }

/* ── layout ──────────────────────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding-block: 24px 40px;
}
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } .form { position: static !important; } }

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}
.form { position: sticky; top: 84px; }

.panel-title {
  font-size: 11px; text-transform: uppercase; letter-spacing: .09em;
  color: var(--ink-faint); margin: 0 0 12px; font-weight: 700;
}
.panel-title:not(:first-child) { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); }

/* ── form ────────────────────────────────────────────────── */
.field { display: block; margin-bottom: 13px; }
.field > span:first-child {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 12.5px; font-weight: 600; color: var(--ink-soft); margin-bottom: 5px;
}
.field em { font-style: normal; color: var(--accent); font-variant-numeric: tabular-nums; font-weight: 700; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

input[type="text"], input:not([type]), select, textarea {
  width: 100%; font: inherit; font-size: 14px; color: var(--ink);
  background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; resize: vertical;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent;
}
input[type="range"] { width: 100%; accent-color: var(--accent); margin: 3px 0; }
.hint { display: block; font-size: 11.5px; color: var(--ink-faint); margin-top: 4px; line-height: 1.4; }

.presets { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }
.preset-btns { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 7px; }
.preset-btns button {
  font: inherit; font-size: 12px; cursor: pointer;
  background: var(--bg-sunk); border: 1px solid var(--line); color: var(--ink-soft);
  border-radius: 20px; padding: 4px 11px;
}
.preset-btns button:hover { border-color: var(--accent); color: var(--accent); }

/* ── results ─────────────────────────────────────────────── */
.results { display: grid; gap: 18px; }

.card {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-head {
  padding: 14px 18px; border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.card-head h3 { margin: 0; font-size: 14px; letter-spacing: -.005em; }
.card-head .sub { font-size: 12px; color: var(--ink-soft); margin: 2px 0 0; }
.card-body { padding: 18px; }
.card-body > *:first-child { margin-top: 0; }
.card-body > *:last-child { margin-bottom: 0; }

.pill {
  font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 20px; background: var(--bg-sunk); color: var(--ink-soft);
  white-space: nowrap;
}
.pill.accent { background: var(--accent-soft); color: var(--accent); }
.pill.warnish { background: var(--warn-soft); color: var(--warn); }

/* headline GH / KH */
.headline { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .headline { grid-template-columns: 1fr; } }

.big-stat {
  border-radius: var(--radius); padding: 16px 18px; border: 1px solid transparent;
}
.big-stat.gh { background: var(--gh-soft); border-color: color-mix(in srgb, var(--gh) 25%, transparent); }
.big-stat.kh { background: var(--kh-soft); border-color: color-mix(in srgb, var(--kh) 25%, transparent); }
.big-stat .label {
  font-size: 11px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; opacity: .85;
}
.big-stat.gh .label { color: var(--gh); }
.big-stat.kh .label { color: var(--kh); }
.big-stat .value {
  font-size: 40px; font-weight: 750; line-height: 1.05; letter-spacing: -.03em;
  font-variant-numeric: tabular-nums; margin: 4px 0 2px; color: var(--ink);
}
.big-stat .value small { font-size: 15px; font-weight: 600; color: var(--ink-soft); letter-spacing: 0; }
.big-stat .range { font-size: 12px; color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.big-stat .salts { font-size: 12.5px; color: var(--ink-soft); margin-top: 9px; padding-top: 9px;
  border-top: 1px solid color-mix(in srgb, currentColor 18%, transparent); }
.big-stat .salts b { color: var(--ink); font-weight: 650; }

/* tables */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-faint); font-weight: 700; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td .formula { font-size: 11.5px; color: var(--ink-faint); display: block; }
.table-scroll { overflow-x: auto; margin: 0 -18px; padding: 0 18px; }

/* sensory bars */
.axes { display: grid; gap: 11px; }
.axis-row { display: grid; grid-template-columns: 86px minmax(0,1fr) 34px; align-items: center; gap: 10px; }
.axis-row .name { font-size: 12.5px; font-weight: 600; color: var(--ink-soft); }
.axis-row .track { height: 8px; border-radius: 5px; background: var(--bg-sunk); overflow: hidden; }
.axis-row .fill { height: 100%; border-radius: 5px; background: var(--accent); }
.axis-row .score { font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; text-align: right; }

.why { font-size: 12.5px; color: var(--ink-soft); }
.why summary { cursor: pointer; font-weight: 600; color: var(--accent); padding: 6px 0; }
.why ul { margin: 4px 0 12px; padding-left: 18px; }
.why li { margin: 2px 0; }
.why .up { color: var(--gh); font-weight: 650; }
.why .down { color: var(--accent); font-weight: 650; }

/* spec grid */
.specs { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.spec { background: var(--bg-panel); padding: 12px 14px; }
.spec .k { font-size: 10.5px; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-faint); font-weight: 700; }
.spec .v { font-size: 20px; font-weight: 700; letter-spacing: -.02em; margin-top: 3px; font-variant-numeric: tabular-nums; }
.spec .v small { font-size: 12px; font-weight: 600; color: var(--ink-soft); }

/* timeline */
.phases { display: grid; gap: 10px; margin-top: 16px; }
.phase { display: grid; grid-template-columns: 74px 1fr; gap: 12px; align-items: start; }
.phase .t { font-size: 12px; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums;
  background: var(--accent-soft); border-radius: 6px; padding: 4px 6px; text-align: center; }
.phase .n { font-size: 13px; font-weight: 650; }
.phase .d { font-size: 12.5px; color: var(--ink-soft); margin-top: 2px; }

.chart { width: 100%; height: auto; display: block; margin-top: 4px; }

/* misc */
.note-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; }
.chip { font-size: 11.5px; padding: 3px 9px; border-radius: 20px; background: var(--bg-sunk);
  color: var(--ink-soft); border: 1px solid var(--line); }
.chip.unmatched { border-style: dashed; color: var(--ink-faint); }

.callout { background: var(--bg-sunk); border-left: 3px solid var(--accent); border-radius: 0 8px 8px 0;
  padding: 11px 14px; font-size: 13px; color: var(--ink-soft); margin: 14px 0; }
.callout.warn { border-left-color: var(--warn); background: var(--warn-soft); color: var(--warn); }
.callout b { color: var(--ink); }
.callout.warn b { color: var(--warn); }

p.lede { font-size: 13.5px; color: var(--ink-soft); margin: 0 0 14px; }

.method-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 4px; }
.method-compare .mc { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.method-compare .mc.win { border-color: var(--accent); background: var(--accent-soft); }
.method-compare .mc .t { font-size: 13px; font-weight: 700; display: flex; justify-content: space-between; }
.method-compare .mc .s { font-size: 12px; color: var(--ink-soft); margin-top: 3px; }

.foot { padding: 22px 20px 44px; font-size: 12px; color: var(--ink-faint); border-top: 1px solid var(--line); }
.foot p { margin: 0 0 8px; max-width: 78ch; }
.foot a { color: var(--accent); }
.disclaim { font-style: italic; }