:root {
  color-scheme: light;
  --bg: #f6f8f4;
  --surface: #ffffff;
  --surface-soft: #eef4ed;
  --ink: #18231f;
  --muted: #64716b;
  --line: #d7e0d8;
  --green: #2f7d49;
  --green-dark: #225f38;
  --blue: #315d8a;
  --plum: #7a4d79;
  --amber: #ad741f;
  --shadow: 0 18px 48px rgba(29, 48, 41, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: var(--green-dark);
  font-weight: 800;
  text-decoration: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 68px;
  padding: 12px clamp(16px, 4vw, 56px);
  border-bottom: 1px solid rgba(215, 224, 216, 0.9);
  background: rgba(246, 248, 244, 0.94);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 34%, #fbfaf4 0 18%, transparent 19%),
    radial-gradient(circle at 34% 60%, #fbfaf4 0 15%, transparent 16%),
    radial-gradient(circle at 66% 60%, #fbfaf4 0 15%, transparent 16%),
    linear-gradient(135deg, var(--green), var(--blue));
}

.brand strong,
.brand small {
  display: block;
  white-space: nowrap;
}

.brand strong {
  font-size: 15px;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.nav a {
  padding: 8px 10px;
  border-radius: 6px;
}

.nav a:hover {
  background: var(--surface-soft);
  color: var(--ink);
}

main {
  padding: clamp(16px, 4vw, 48px);
}

.workspace,
.ai-report-section,
.food-section,
.evidence-section,
.offer-band {
  width: min(1180px, 100%);
  margin: 0 auto;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: end;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.06;
}

h2 {
  margin-bottom: 8px;
  font-size: 22px;
  line-height: 1.2;
}

h3 {
  margin-bottom: 10px;
  font-size: 16px;
}

.lead {
  max-width: 740px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
}

.experiment-badge {
  min-width: 210px;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.experiment-badge span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.experiment-badge strong {
  color: var(--plum);
  font-size: 17px;
}

.tool-grid {
  display: grid;
  grid-template-columns: minmax(330px, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
  align-items: start;
}

.control-panel,
.result-panel,
.report-actions article,
.visual-output,
.report-output,
.food-card,
.evidence-grid article,
.offer-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.control-panel,
.result-panel,
.offer-card {
  padding: clamp(16px, 3vw, 24px);
}

.panel-title {
  margin-bottom: 18px;
}

.panel-title p,
.section-head p,
.offer-band p {
  margin-bottom: 0;
  color: var(--muted);
}

fieldset {
  margin: 0 0 16px;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

legend {
  padding: 0 8px;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 900;
}

.option-grid,
.check-list,
.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.option-grid label,
.check-list label,
.mini-grid label {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 9px 10px;
  border: 1px solid #dce5dd;
  border-radius: 6px;
  background: #fbfcfa;
  font-size: 14px;
}

.mini-grid label {
  background: transparent;
  border: 0;
  min-height: auto;
  padding: 0;
  font-weight: 800;
}

select,
textarea,
.code-row input {
  width: 100%;
  border: 1px solid #dce5dd;
  border-radius: 6px;
  background: #fbfcfa;
  color: var(--ink);
}

select,
.code-row input {
  min-height: 42px;
  padding: 8px 10px;
}

.textarea-label {
  display: block;
  margin: 14px 0 8px;
  font-size: 14px;
  font-weight: 800;
}

textarea {
  resize: vertical;
  padding: 10px 12px;
  line-height: 1.55;
}

.range-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 140px 48px;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

.range-row label {
  font-weight: 800;
}

input[type="range"] {
  accent-color: var(--green);
}

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

.segmented button,
.primary-button,
.ghost-button {
  min-height: 42px;
  border-radius: 6px;
  padding: 10px 12px;
  font-weight: 900;
}

.segmented button {
  border: 1px solid var(--line);
  background: #fbfcfa;
  color: var(--muted);
}

.segmented button.active {
  border-color: var(--green);
  background: var(--surface-soft);
  color: var(--green-dark);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.primary-button {
  border: 1px solid var(--green);
  background: var(--green);
  color: white;
}

.primary-button:hover {
  background: var(--green-dark);
}

.ghost-button {
  border: 1px solid var(--line);
  background: #fbfcfa;
  color: var(--ink);
}

.ghost-button:hover {
  background: var(--surface-soft);
}

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

.result-panel {
  display: grid;
  grid-template-columns: minmax(280px, 0.62fr) minmax(0, 0.38fr);
  gap: 18px;
  align-items: start;
}

.share-card-wrap {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
}

canvas {
  display: block;
  width: 100%;
  height: auto;
}

.result-copy {
  display: grid;
  gap: 12px;
}

.result-copy p {
  color: var(--muted);
}

.action-list {
  display: grid;
  gap: 8px;
}

.action-item {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfcfa;
  font-size: 14px;
}

.food-section,
.ai-report-section,
.evidence-section,
.offer-band {
  margin-top: 24px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: end;
  margin-bottom: 14px;
}

.food-grid,
.evidence-grid,
.report-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.report-grid {
  grid-template-columns: minmax(300px, 0.85fr) minmax(0, 1.15fr);
  align-items: start;
}

.report-actions {
  display: grid;
  gap: 14px;
}

.report-actions article,
.visual-output,
.report-output {
  padding: 16px;
  box-shadow: none;
}

.report-actions p,
.visual-output p,
.report-output p,
.report-output li {
  color: var(--muted);
  font-size: 14px;
}

.report-results {
  display: grid;
  gap: 14px;
}

.report-output {
  min-height: 310px;
}

.visual-output {
  min-height: 280px;
}

.visual-style {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 12px 0;
}

.visual-actions {
  margin-top: 10px;
}

.image-frame {
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(238, 244, 237, 0.92), rgba(247, 242, 232, 0.92)),
    radial-gradient(circle at 20% 20%, rgba(47, 125, 73, 0.18), transparent 30%);
}

.image-placeholder {
  display: grid;
  gap: 8px;
  max-width: 360px;
  padding: 24px;
  text-align: center;
}

.image-placeholder strong {
  font-size: 18px;
}

.image-placeholder span {
  color: var(--muted);
  font-size: 14px;
}

.error-text {
  color: #9a3412;
}

.visual-poster {
  overflow: hidden;
  width: 100%;
  border-radius: var(--radius);
  background: #e7efe6;
}

#generatedImage {
  display: block;
  width: 100%;
  height: auto;
}

#imageCaption {
  margin: 10px 0 0;
  font-size: 13px;
}

.report-output h3,
.report-output h4 {
  margin-top: 16px;
}

.report-output h3:first-child,
.report-output h4:first-child {
  margin-top: 0;
}

.report-output ul,
.report-output ol {
  padding-left: 20px;
}

.report-output .status {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 10px;
  border-radius: 6px;
  background: var(--surface-soft);
  color: var(--green-dark);
  font-size: 14px;
  font-weight: 900;
}

.report-output .error {
  background: #fff0ed;
  color: #9a3412;
}

.code-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.food-card {
  padding: 15px;
  box-shadow: none;
}

.food-card .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0;
}

.tag {
  padding: 4px 7px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 800;
}

.food-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
}

.evidence-grid article {
  padding: 16px;
  box-shadow: none;
}

.evidence-grid p {
  color: var(--muted);
  font-size: 14px;
}

.offer-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: 18px;
  align-items: start;
  padding-bottom: 28px;
}

.offer-card ul {
  margin: 0 0 16px;
  padding-left: 20px;
  color: var(--muted);
}

@media (max-width: 1050px) {
  .tool-grid,
  .result-panel,
  .intro,
  .report-grid,
  .offer-band {
    grid-template-columns: 1fr;
  }

  .experiment-badge {
    width: fit-content;
  }
}

@media (max-width: 720px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
  }

  main {
    padding: 16px;
  }

  .option-grid,
  .check-list,
  .mini-grid,
  .food-grid,
  .evidence-grid,
  .report-grid,
  .range-row,
  .segmented,
  .section-head,
  .code-row {
    grid-template-columns: 1fr;
  }

  .section-head {
    display: grid;
  }

}