:root {
  --ink: #241c16;
  --muted: #6d6258;
  --line: #e3d5c4;
  --paper: #fffdf8;
  --bg: #f3eadf;
  --seal: #9c3b2e;
  --ok: #1f7a4d;
  --ok-soft: #e5f3eb;
  --warn: #a15c12;
  --warn-soft: #f8ecd9;
  --low: #8a5a12;
  --high: #9c3b2e;
  --high-soft: #f8e6e2;
  --grain: #f4e3bc;
  --veg: #d7eadc;
  --protein: #f6d7cc;
  --fruit: #fde3c4;
  --shadow: 0 16px 40px rgba(70, 42, 24, 0.08);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Songti SC", "Noto Serif SC", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  background:
    radial-gradient(900px 420px at 0% -10%, #fff8ee 0%, transparent 55%),
    linear-gradient(180deg, #f7f1e8 0%, var(--bg) 220px);
  line-height: 1.5;
}

button, input { font: inherit; color: inherit; }

button {
  cursor: pointer;
  border: 0;
  background: none;
}

button:focus-visible {
  outline: 2px solid var(--seal);
  outline-offset: 2px;
}

#app {
  width: min(1120px, calc(100% - 28px));
  margin: 0 auto;
  padding-bottom: 48px;
}

.hero {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-start;
  padding: 28px 0 16px;
}

.hero-copy { flex: 1 1 240px; }

.guide-toggle {
  margin-left: auto;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.guide-toggle[aria-expanded="true"] {
  background: var(--ink);
  color: #fffaf3;
  border-color: var(--ink);
}

.guide-panel {
  max-height: min(68vh, 720px);
  margin: 0 0 8px;
  padding: 18px 18px 8px;
  overflow: auto;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.guide-panel h2 {
  margin: 18px 0 8px;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
}

.guide-panel h2:first-child { margin-top: 0; }

.guide-panel p,
.guide-panel ul { margin: 0 0 10px; }

.guide-panel ul { padding-left: 1.2em; }

.guide-table-wrap {
  margin: 0 0 12px;
  overflow-x: auto;
}

.guide-panel table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.guide-panel th,
.guide-panel td {
  padding: 7px 8px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.guide-panel th { color: var(--muted); font-weight: 600; }

.seal {
  flex: 0 0 auto;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  color: #f8efe6;
  background: var(--seal);
  border-radius: 6px;
  font-family: var(--serif);
  font-size: 28px;
  letter-spacing: 0;
  box-shadow: inset 0 0 0 2px rgba(255, 244, 230, 0.35);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--seal);
  font-size: 13px;
  letter-spacing: 0.12em;
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 40px;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.lede {
  margin: 8px 0 0;
  max-width: 62ch;
  color: var(--muted);
}

.sticky {
  position: sticky;
  top: 0;
  z-index: 5;
  margin: 0 -14px;
  padding: 10px 14px 12px;
  background: rgba(243, 234, 223, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
}

.sticky.is-stuck {
  border-bottom-color: var(--line);
}

.meal-switch {
  display: flex;
  gap: 8px;
}

.meal-switch button {
  flex: 1;
  min-height: 44px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--line);
}

.meal-switch button[aria-selected="true"] {
  background: var(--ink);
  color: #fffaf3;
  border-color: var(--ink);
}

.meal-switch .dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-left: 6px;
  border-radius: 50%;
  background: #d7a15a;
  vertical-align: 1px;
}

.meal-switch button[aria-selected="true"] .dot { background: #f2c98a; }

.meters {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.meter {
  min-width: 0;
  padding: 8px 10px 9px;
  background: var(--paper);
  border-radius: 12px;
  border: 1px solid var(--line);
}

.meter-top {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  align-items: baseline;
  font-size: 13px;
}

.meter-top strong {
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  white-space: nowrap;
}

.meter-top small {
  color: var(--muted);
  font-weight: 400;
}

.bar {
  height: 6px;
  margin-top: 6px;
  border-radius: 99px;
  background: #efe4d6;
  overflow: hidden;
}

.bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--ok);
}

.meter.low .bar span,
.meter.warn .bar span { background: var(--warn); }

.meter.high .bar span,
.meter.high .meter-top strong { color: var(--high); background: var(--high); }

.meter.high .meter-top strong { background: none; }

.sticky-line {
  margin: 8px 2px 0;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.layout {
  display: grid;
  grid-template-columns: minmax(280px, 420px) minmax(300px, 1fr);
  gap: 18px;
  align-items: start;
  margin-top: 18px;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.plate-card,
.pagoda-card,
.insights { padding: 18px; }

.card h2 {
  margin: 0 0 4px;
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 600;
}

.hint {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 13px;
}

.plate-row {
  display: grid;
  gap: 12px;
  justify-items: center;
}

.plate {
  width: min(100%, 360px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  border: 10px solid #f7f0e6;
  box-shadow:
    inset 0 0 0 2px #e7d8c6,
    0 10px 24px rgba(80, 48, 24, 0.08);
  background: #fff;
}

.quad {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.quad.grain { justify-content: flex-end; align-items: flex-end; text-align: right; padding: 8px 14% 16% 8px; }
.quad.veg { justify-content: flex-end; align-items: flex-start; text-align: left; padding: 8px 8px 16% 14%; }
.quad.protein { justify-content: flex-start; align-items: flex-end; text-align: right; padding: 16% 14% 8px 8px; }
.quad.fruit { justify-content: flex-start; align-items: flex-start; text-align: left; padding: 16% 8px 8px 14%; }

.quad.grain { background: var(--grain); }
.quad.protein { background: var(--protein); }
.quad.veg { background: var(--veg); }
.quad.fruit { background: var(--fruit); }

.quad-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: #5c5148;
}

.chips {
  width: auto;
  max-width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
}

.chips li {
  display: flex;
  gap: 4px;
  padding: 1px 0;
  white-space: nowrap;
}

.quad.grain .chips li,
.quad.protein .chips li { justify-content: flex-end; }

.quad.veg .chips li,
.quad.fruit .chips li { justify-content: flex-start; }

.chips b { font-weight: 600; }

.empty-note {
  color: #8a7b6e;
  font-size: 13px;
}

.side-col {
  width: min(100%, 360px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.cup, .nut-dish {
  min-height: 64px;
  border-radius: 18px;
  border: 1px dashed #ddcbb8;
  background: #fffaf4;
  padding: 10px 8px;
  text-align: center;
}

.cup strong, .nut-dish strong {
  display: block;
  font-size: 13px;
}

.cup span, .nut-dish span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.controls { margin-top: 16px; }

.control-block { margin-top: 12px; }

.control-label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--muted);
}

.segment {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.segment button {
  min-height: 40px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
}

.segment button[aria-pressed="true"] {
  background: #2a2420;
  color: #fffaf3;
  border-color: #2a2420;
}

.demo-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.demo-actions button {
  min-height: 42px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
}

.demo-actions button.primary {
  background: var(--seal);
  color: #fff8f3;
  border-color: var(--seal);
}

.pagoda {
  width: min(100%, 460px);
  margin: 8px auto 0;
}

.roof {
  width: 46%;
  height: 28px;
  margin: 0 auto -1px;
  background: var(--seal);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.layer {
  position: relative;
  height: 72px;
  margin: 0 auto 6px;
  clip-path: polygon(3.5% 0, 96.5% 0, 100% 100%, 0 100%);
  background: #f3eadf;
  overflow: hidden;
}

.layer-fill {
  position: absolute;
  inset: 0 auto 0 0;
  opacity: 0.45;
}

.layer-fill.ok { background: #1f7a4d; }
.layer-fill.low,
.layer-fill.warn { background: #e0a045; }
.layer-fill.high { background: #c45b4e; }

.layer-text {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 12% 0 10%;
}

.layer-text b {
  display: block;
  font-family: var(--serif);
  font-size: 16px;
}

.layer-text small {
  display: block;
  color: #4e453d;
  font-size: 12px;
}

.pill {
  flex: 0 0 auto;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.88);
  font-size: 12px;
}

.pill.ok { color: var(--ok); }
.pill.low, .pill.warn { color: var(--warn); }
.pill.high { color: var(--high); }

.estimate {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.insights { margin-top: 0; }

.insights.ok { background: var(--ok-soft); }
.insights.high { background: var(--high-soft); }
.insights.warn, .insights.low { background: var(--warn-soft); }
.insights.info { background: var(--paper); }

.insights h2 { font-size: 22px; }

.insights ul {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.insights li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px;
  align-items: start;
  padding: 8px 0;
  border-top: 1px solid rgba(36, 28, 22, 0.08);
}

.kicker {
  margin-top: 2px;
  padding: 1px 6px;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.8);
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.insights p { margin: 0; }

.picker { margin-top: 18px; }

.picker-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: end;
  margin-bottom: 8px;
}

.picker-head h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 28px;
}

.picker-head p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.group { margin-top: 14px; }

.group h3 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #5e534a;
}

.foods {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 8px;
}

.food {
  position: relative;
  min-height: 72px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.food.is-on {
  border-color: #c9aa8c;
  box-shadow: inset 0 0 0 1px #c9aa8c;
}

.food-add {
  width: 100%;
  min-height: 72px;
  padding: 10px 36px 10px 12px;
  text-align: left;
  display: flex;
  gap: 8px;
  align-items: center;
}

.swatch {
  width: 10px;
  align-self: stretch;
  border-radius: 99px;
  background: var(--swatch, #ddd);
}

.food-add strong { display: block; font-size: 16px; }
.food-add small { color: var(--muted); font-size: 12px; }

.qty {
  margin-left: auto;
  font-style: normal;
  font-variant-numeric: tabular-nums;
  color: var(--seal);
  font-weight: 700;
}

.food-sub {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #f6eee4;
  border: 1px solid var(--line);
}

.foot {
  margin-top: 22px;
  color: var(--muted);
  font-size: 12px;
}

.foot a { color: var(--seal); }

@media (max-width: 860px) {
  h1 { font-size: 34px; }
  .layout { grid-template-columns: 1fr; }
  .hero { padding-top: 18px; }
  .layer { height: 78px; }
  .layer-text { padding-right: 8%; }
}

@media (max-width: 560px) {
  #app { width: min(100% - 20px, 1120px); }
  .guide-toggle { margin-left: 68px; }
  .sticky { margin: 0 -10px; padding-left: 10px; padding-right: 10px; }
  .meters { grid-template-columns: 1fr 1fr; gap: 6px; }
  .meter { padding: 7px 7px 8px; }
  .meter-top { font-size: 12px; }
  .meter-top strong { font-size: 13px; }
  .plate { width: min(100%, 320px); border-width: 8px; }
  .chips { font-size: 12px; }
  .picker-head { flex-direction: column; align-items: start; }
}