:root {
  --bg-base: #f4f4f5;
  --bg-surface: #ffffff;
  --bg-elevated: #fafafa;
  --bg-input: #f4f4f5;
  --border: #e4e4e7;
  --border-strong: #d4d4d8;
  --accent: #ff5a1f;
  --accent-muted: rgba(255, 90, 31, 0.09);
  --blue: #60a5fa;
  --blue-muted: rgba(96, 165, 250, 0.16);
  --green: #4ade80;
  --green-muted: rgba(74, 222, 128, 0.16);
  --text: #111113;
  --muted: #71717a;
  --faint: #a1a1aa;
  --radius-sm: 6px;
  --radius-md: 10px;
  --sidebar-w: 272px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg-base);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select {
  font: inherit;
}

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

a {
  color: inherit;
  text-decoration: none;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-thumb {
  background: #d4d4d8;
  border-radius: 999px;
}

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  height: 100vh;
  overflow: hidden;
}

.sidebar {
  display: flex;
  min-width: 0;
  height: 100vh;
  flex-direction: column;
  overflow: auto;
  border-right: 1px solid var(--border);
  background: var(--bg-surface);
}

.sidebar-header {
  position: sticky;
  top: 0;
  z-index: 2;
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  padding: 18px 16px 14px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-mark {
  display: block;
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  object-fit: contain;
}

.logo-wordmark > span {
  color: var(--accent);
}

.subline {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.sidebar-body {
  display: grid;
  gap: 14px;
  padding: 14px 12px 24px;
}

#theorySidebarControls,
.sidebar-context {
  display: grid;
  gap: 14px;
}

.tabs {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  border-radius: var(--radius-md);
  background: var(--bg-input);
  padding: 4px;
}

.tabs::before {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 4px;
  width: calc((100% - 20px) / 3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent);
  background: var(--accent-muted);
  box-shadow: 0 2px 7px rgba(255, 90, 31, 0.16);
  content: "";
  pointer-events: none;
  transform-origin: center;
  transition: left 520ms cubic-bezier(.22, 1.45, .45, 1), opacity 160ms ease;
}

.tabs[data-active="exercise"]::before { left: calc((100% - 20px) / 3 + 10px); }
.tabs[data-active="nutrition"]::before { left: calc((100% - 20px) * 2 / 3 + 16px); }
.tabs[data-active="review"]::before { opacity: 0; }
.tabs.is-jelly::before { animation: tab-indicator-jelly 560ms ease-out both; }
@keyframes tab-indicator-jelly {
  0% { transform: scaleX(1) scaleY(1); }
  28% { transform: scaleX(1.15) scaleY(.86); }
  58% { transform: scaleX(.94) scaleY(1.07); }
  78% { transform: scaleX(1.035) scaleY(.98); }
  100% { transform: scaleX(1) scaleY(1); }
}

.tab {
  position: relative;
  z-index: 1;
  height: 32px;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  transition: color 180ms ease;
}

.tab.active {
  color: var(--accent);
}

.tab-panel-enter-forward { animation: tab-panel-enter-forward 240ms cubic-bezier(.2, .8, .2, 1) both; }
.tab-panel-enter-backward { animation: tab-panel-enter-backward 240ms cubic-bezier(.2, .8, .2, 1) both; }
.tab-panel-leave-forward { animation: tab-panel-leave-forward 170ms ease-in both; }
.tab-panel-leave-backward { animation: tab-panel-leave-backward 170ms ease-in both; }
@keyframes tab-panel-enter-forward { from { opacity: 0; transform: translateX(36px); } to { opacity: 1; transform: translateX(0); } }
@keyframes tab-panel-enter-backward { from { opacity: 0; transform: translateX(-36px); } to { opacity: 1; transform: translateX(0); } }
@keyframes tab-panel-leave-forward { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(-28px); } }
@keyframes tab-panel-leave-backward { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(28px); } }

@media (prefers-reduced-motion: reduce) {
  .selection-pop { animation: none !important; transition: none; }
  .tab,
  .tabs::before,
  .chip.active,
  .library-chip.active,
  .sex-switch button.active,
  .exercise-tab.active,
  .view-switch button.active,
  .phase-button.active,
  .exercise-card.active,
  .exercise-card.is-jelly,
  .pending-signal::after,
  .tab-panel-enter-forward,
  .tab-panel-enter-backward,
  .tab-panel-leave-forward,
  .tab-panel-leave-backward { animation: none; transition: none; }
}

.search-box {
  position: relative;
  display: block;
}

.search-box input {
  width: 100%;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-input);
  color: var(--text);
  outline: 0;
  padding: 0 46px 0 38px;
  font-size: 11px;
}

.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

/* Keep one clear action: Chrome/Safari add one to search inputs by default. */
.search-box input::-webkit-search-cancel-button,
.search-box input::-webkit-search-decoration {
  appearance: none;
}

.search-icon,
.clear-search {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--faint);
}

.search-icon {
  left: 13px;
  font-size: 20px;
  line-height: 1;
}

.clear-search {
  right: 8px;
  display: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  padding: 0;
  font-size: 20px;
  line-height: 26px;
  text-align: center;
}

.clear-search.visible {
  display: block;
}

.clear-search:hover,
.clear-search:focus-visible {
  background: var(--border);
  color: var(--text);
}

.clear-search:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.filter-section h2 {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.sidebar-pending {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  border-top: 1px solid var(--border);
  padding: 14px 4px 0;
}

.pending-signal {
  position: relative;
  width: 10px;
  height: 10px;
  margin: 5px 0 0 3px;
  border-radius: 50%;
  background: var(--accent);
}

.pending-signal::after {
  position: absolute;
  inset: -4px;
  border: 1px solid rgba(255, 90, 31, 0.34);
  border-radius: inherit;
  content: "";
  animation: pending-signal 1.8s ease-out infinite;
}

@keyframes pending-signal {
  0% { transform: scale(.65); opacity: .9; }
  75%,100% { transform: scale(1.8); opacity: 0; }
}

.sidebar-pending strong {
  display: block;
  color: var(--text);
  font-size: 13px;
  line-height: 1.4;
}

.sidebar-pending p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.chip:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

.chip.active {
  border-color: var(--accent);
  background: var(--accent-muted);
  color: var(--accent);
}

.chip,
.library-chip,
.sex-switch button,
.exercise-tab,
.view-switch button,
.phase-button,
.exercise-card,
select {
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.chip.active,
.library-chip.active,
.sex-switch button.active,
.exercise-tab.active,
.view-switch button.active,
.phase-button.active,
.exercise-card.active {
  animation: selection-pop 320ms cubic-bezier(.2, 1.45, .45, 1) both;
}

@keyframes selection-pop {
  0% { transform: scale(1); }
  48% { transform: scale(1.055); }
  74% { transform: scale(.978); }
  100% { transform: scale(1); }
}

/* Selection animation added by the click handler only. */
.chip.active,
.library-chip.active,
.sex-switch button.active,
.exercise-tab.active,
.view-switch button.active,
.phase-button.active,
.exercise-card.active { animation: none; }
.selection-pop { animation: selection-pop 320ms cubic-bezier(.2, 1.45, .45, 1) both !important; }

.select-wrap {
  position: relative;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
}

.select-wrap::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  width: 7px;
  height: 7px;
  border-bottom: 2px solid var(--muted);
  border-right: 2px solid var(--muted);
  pointer-events: none;
  transform: translateY(-65%) rotate(45deg);
}

select {
  width: 100%;
  height: 38px;
  appearance: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text);
  outline: 0;
  padding: 0 38px 0 12px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
}

select:hover {
  border-color: var(--border-strong);
  background: var(--bg-input);
}

select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.main-content {
  height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 22px 26px 40px;
}

.main-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.kicker {
  margin-bottom: 4px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.main-header h1 {
  margin: 0;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.main-header p {
  max-width: 620px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.quick-links {
  align-self: flex-start;
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 8px;
}

.header-insight {
  display: grid;
  min-width: 132px;
  gap: 1px;
  border-left: 2px solid var(--accent);
  padding: 3px 0 3px 10px;
}

.header-insight span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.header-insight strong {
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 16px;
  line-height: 1.15;
}

.header-insight small {
  color: var(--muted);
  font-family: inherit;
  font-size: 10px;
  font-weight: 700;
}

.quick-links a,
.result-bar button,
.modal-actions a,
.modal-actions button,
.card-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  padding: 0 11px;
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.quick-links a:hover,
.result-bar button:hover,
.modal-actions a:hover,
.modal-actions button:hover,
.card-action:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.result-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 13px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(238px, 1fr));
  gap: 12px;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
}

.nutrition-panel {
  --carb-ink: #18181b;
  --carb-soft: #f7f7f5;
  --carb-blue: #2563eb;
  --carb-green: #15803d;
  --carb-amber: #d97706;
  display: grid;
  gap: 38px;
  padding-bottom: 12px;
}
.nutrition-panel .kicker { letter-spacing: 0; }
.nutrition-intro { display: flex; align-items: stretch; justify-content: space-between; gap: 16px; }
.nutrition-intro h2 { margin: 0; font-size: 24px; line-height: 1.15; }
.nutrition-intro p { max-width: 420px; margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.nutrition-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.nutrition-conversion-card { display: grid; min-height: 126px; align-content: space-between; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-surface); padding: 16px; }
.nutrition-conversion-card span { color: var(--muted); font-size: 12px; font-weight: 800; }
.nutrition-conversion-card strong { color: var(--accent); font-size: 22px; }
.nutrition-section { scroll-margin-top: 18px; }
.section-heading { margin-bottom: 12px; }
.section-heading h2 { margin: 0; font-size: 20px; line-height: 1.2; }
.nutrition-detail-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.nutrition-detail-grid .nutrition-conversion-card { min-height: 152px; gap: 10px; }
.nutrition-detail-grid .nutrition-conversion-card strong { font-size: 17px; }
.nutrition-detail-grid p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
.nutrition-goal-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.nutrition-goal-grid article { display: grid; gap: 6px; min-height: 94px; align-content: center; border-top: 2px solid var(--accent); background: var(--bg-surface); padding: 14px 16px; }
.nutrition-goal-grid span { color: var(--muted); font-size: 12px; font-weight: 800; }
.nutrition-goal-grid strong { font-size: 15px; }
.carb-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 0.42fr);
  min-height: 248px;
  overflow: hidden;
  border-radius: 8px;
  background: var(--carb-ink);
  color: #ffffff;
}
.carb-hero-copy {
  display: grid;
  align-content: center;
  padding: 32px;
}
.carb-hero-copy h2 {
  max-width: 620px;
  margin: 0;
  font-size: 36px;
  line-height: 1.15;
}
.carb-hero-copy h2 span { color: #ff8a5c; }
.carb-hero-copy > p {
  max-width: 560px;
  margin: 12px 0 0;
  color: #d4d4d8;
  font-size: 14px;
}
.carb-hero-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 26px;
}
.carb-hero-topics span {
  border-left: 1px solid #52525b;
  padding: 0 14px;
  color: #a1a1aa;
  font-size: 11px;
  font-weight: 800;
}
.carb-hero-topics span:first-child { border-left: 0; padding-left: 0; }
.carb-energy-fact {
  display: grid;
  align-content: center;
  border-left: 1px solid #3f3f46;
  padding: 30px;
}
.carb-energy-fact > span {
  color: #a1a1aa;
  font-size: 11px;
  font-weight: 800;
}
.carb-energy-fact strong {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 6px;
  color: #ffffff;
  font-size: 18px;
}
.carb-energy-fact strong b {
  color: var(--accent);
  font-size: 72px;
  line-height: 1.08;
}
.carb-energy-fact p {
  max-width: 190px;
  margin: 10px 0 0;
  color: #a1a1aa;
  font-size: 12px;
}
.carb-section-heading {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}
.carb-section-heading .section-index {
  padding-top: 2px;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  font-weight: 900;
}
.carb-section-heading h2 { font-size: 23px; }
.carb-section-heading p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.carb-source-spectrum {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-surface);
}
.carb-source-spectrum article {
  position: relative;
  display: grid;
  min-height: 170px;
  align-content: space-between;
  border-right: 1px solid var(--border);
  padding: 20px;
}
.carb-source-spectrum article:last-child { border-right: 0; }
.carb-source-spectrum article::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  background: var(--source-color);
  content: "";
}
.carb-source-spectrum .starch { --source-color: var(--carb-blue); }
.carb-source-spectrum .sugar { --source-color: #dc2626; }
.carb-source-spectrum .fruit { --source-color: var(--carb-amber); }
.carb-source-spectrum .fiber { --source-color: var(--carb-green); }
.source-number {
  color: var(--source-color);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  font-weight: 900;
}
.carb-source-spectrum article > div { display: grid; gap: 5px; }
.carb-source-spectrum article > div > span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}
.carb-source-spectrum strong {
  font-size: 18px;
  line-height: 1.35;
}
.carb-source-spectrum p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}
.carb-taxonomy {
  border-radius: 8px;
  background: var(--carb-ink);
  padding: 28px;
  color: #ffffff;
}
.carb-section-heading.inverse h2 { color: #ffffff; }
.carb-taxonomy-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid #3f3f46;
}
.carb-taxonomy-grid article {
  display: grid;
  gap: 4px;
  border-right: 1px solid #3f3f46;
  padding: 22px 18px 2px;
}
.carb-taxonomy-grid article:first-child { padding-left: 0; }
.carb-taxonomy-grid article:last-child { border-right: 0; }
.carb-taxonomy-grid span {
  color: #a1a1aa;
  font-size: 11px;
  font-weight: 700;
}
.carb-taxonomy-grid strong {
  color: #ffffff;
  font-size: 20px;
}
.carb-taxonomy-grid p {
  margin: 0;
  color: #ff8a5c;
  font-size: 13px;
  font-weight: 800;
}
.carb-flow-canvas {
  display: grid;
  gap: 22px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-surface);
  padding: 26px;
}
.digestion-stage,
.metabolism-stage {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 22px;
}
.flow-stage-label {
  display: grid;
  align-content: start;
  gap: 4px;
}
.flow-stage-label span {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  font-weight: 900;
}
.flow-stage-label strong { font-size: 16px; }
.digestion-paths { display: grid; gap: 12px; }
.digestion-row {
  display: grid;
  grid-template-columns: minmax(70px, 0.24fr) minmax(50px, 1fr) minmax(170px, 0.62fr);
  align-items: center;
  min-height: 58px;
}
.digestion-row > strong { font-size: 16px; }
.digestion-row > i {
  position: relative;
  height: 1px;
  margin: 0 18px;
  background: #c4c4c7;
}
.digestion-row > i::after {
  position: absolute;
  top: 50%;
  right: 2px;
  width: 7px;
  height: 7px;
  border-top: 1px solid #71717a;
  border-right: 1px solid #71717a;
  content: "";
  transform: translateY(-50%) rotate(45deg);
}
.digestion-output {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 2px solid var(--carb-blue);
  padding: 8px 0;
}
.digestion-output span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
}
.digestion-output.split { justify-content: flex-start; border-color: var(--carb-amber); }
.digestion-output.split em { color: var(--muted); font-style: normal; }
.flow-transition {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
}
.flow-transition::before,
.flow-transition::after {
  height: 1px;
  flex: 1;
  background: var(--border);
  content: "";
}
.metabolism-lanes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.metabolism-lane {
  overflow: hidden;
  border-radius: 8px;
  background: var(--carb-soft);
}
.metabolism-lane > header {
  min-height: 126px;
  border-top: 4px solid var(--lane-color);
  padding: 18px;
}
.metabolism-lane.glucose { --lane-color: var(--carb-blue); }
.metabolism-lane.fructose { --lane-color: var(--carb-amber); }
.metabolism-lane header > span {
  color: var(--lane-color);
  font-size: 11px;
  font-weight: 900;
}
.metabolism-lane h3 {
  margin: 5px 0 4px;
  font-size: 23px;
  line-height: 1.2;
}
.metabolism-lane header p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}
.route-steps {
  display: grid;
  margin: 0;
  padding: 0 18px 14px;
  list-style: none;
}
.route-steps li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-height: 66px;
  border-top: 1px solid #dededb;
}
.route-steps li > span {
  color: var(--lane-color);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  font-weight: 900;
}
.route-steps li > div { display: grid; gap: 2px; }
.route-steps strong { font-size: 13px; }
.route-steps small { color: var(--muted); font-size: 11px; }
.route-steps .caution { margin: 0 -8px; border-top: 0; border-radius: 6px; background: #fff1ec; padding: 0 8px; }
.route-steps .caution span,
.route-steps .caution strong { color: #c2410c; }
.carb-flow-note {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 14px;
  border-left: 3px solid var(--accent);
  background: #fff4ef;
  padding: 14px 16px;
}
.carb-flow-note strong { font-size: 13px; }
.carb-flow-note span { color: var(--muted); font-size: 12px; }
.carb-compare-table {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-surface);
}
.compare-head,
.compare-row {
  display: grid;
  grid-template-columns: minmax(110px, 0.5fr) repeat(2, minmax(0, 1fr));
}
.compare-head { background: var(--carb-ink); color: #ffffff; }
.compare-head > *,
.compare-row > * {
  display: flex;
  min-height: 54px;
  align-items: center;
  border-right: 1px solid var(--border);
  padding: 12px 16px;
}
.compare-head > * { border-color: #3f3f46; }
.compare-head > *:last-child,
.compare-row > *:last-child { border-right: 0; }
.compare-head span { color: #a1a1aa; font-size: 11px; }
.compare-head strong { font-size: 14px; }
.compare-head strong:last-child { color: #ff8a5c; }
.compare-row { border-top: 1px solid var(--border); }
.compare-row > span { color: var(--muted); font-size: 11px; font-weight: 700; }
.compare-row > b { font-size: 13px; }
.compare-row > b:last-child { color: #9a3412; }
.site-footer { margin-top: 28px; padding: 16px 0 4px; border-top: 1px solid var(--border); color: var(--faint); font-size: 12px; text-align: center; }

.lesson-card,
.review-card {
  display: flex;
  min-height: 264px;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  padding: 14px;
  text-align: left;
  transition: border-color 0.12s, transform 0.12s, box-shadow 0.12s;
}

.lesson-card:hover,
.review-card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.06);
  transform: translateY(-1px);
}

.review-card {
  min-height: 238px;
}

.review-card-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.thumb {
  position: relative;
  height: 118px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-input);
  margin-bottom: 12px;
}

.thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumb.no-image {
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.45), transparent),
    repeating-linear-gradient(135deg, #f4f4f5 0 10px, #eeeeef 10px 20px);
}

.thumb-placeholder {
  text-align: center;
}

.thumb-placeholder span,
.thumb-placeholder b {
  display: block;
}

.thumb-placeholder span {
  color: var(--faint);
  font-size: 12px;
  font-weight: 800;
}

.thumb-placeholder b {
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
}

.card-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.day-pill {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
}

.cert-badge {
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--accent-muted);
  color: var(--accent);
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 800;
}

.cert-blue {
  background: var(--blue-muted);
  color: #2563eb;
}

.cert-green {
  background: var(--green-muted);
  color: #15803d;
}

.lesson-card h2,
.review-card h2 {
  margin: 0;
  font-size: 15px;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.review-card p {
  margin: 8px 0 12px;
  color: var(--muted);
  font-size: 12px;
}

.review-slots {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

.review-slots span {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  padding: 8px 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.review-slots b {
  color: var(--accent);
}

.phase-line {
  margin-top: 7px;
  color: var(--muted);
  font-size: 12px;
}

.card-footer {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  border-radius: 999px;
  padding: 0 8px;
  font-size: 11px;
  font-weight: 700;
}

.tag-green {
  background: var(--green-muted);
  color: #15803d;
}

.tag-blue {
  background: var(--blue-muted);
  color: #2563eb;
}

.tag-muted {
  background: #f4f4f5;
  color: var(--muted);
}

.card-action {
  margin-left: auto;
}

.exercise-panel {
  display: grid;
  gap: 16px;
  --accent: #ff5a1f;
  --accent-muted: rgba(255, 90, 31, 0.1);
}

.exercise-tabs {
  display: grid;
  width: 100%;
  grid-template-columns: repeat(2, minmax(112px, max-content));
  gap: 0;
  border-bottom: 1px solid var(--border);
}

.exercise-tab {
  position: relative;
  min-height: 36px;
  padding: 0 14px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  transition: color 160ms ease;
}

.exercise-tab::after {
  position: absolute;
  right: 14px;
  bottom: -1px;
  left: 14px;
  height: 3px;
  background: #ff5a1f;
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease-out;
}

.exercise-tab.active {
  color: #ff5a1f;
}

.exercise-tab.active::after { transform: scaleX(1); }
.exercise-card.is-jelly { animation: action-card-jelly 320ms ease-out both; }
@keyframes action-card-jelly {
  0% { transform: scale(1); }
  42% { transform: scaleX(1.035) scaleY(.975); }
  72% { transform: scaleX(.992) scaleY(1.012); }
  100% { transform: scale(1); }
}

.muscle-atlas {
  display: grid;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-surface);
  overflow: hidden;
  box-shadow: 0 8px 22px rgba(17, 17, 19, 0.04);
}

.atlas-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  padding: 18px 20px;
  background: var(--bg-elevated);
}

.atlas-toolbar h2,
.exercise-library-placeholder h2 {
  margin: 0;
  font-size: 20px;
  line-height: 1.2;
}

.view-switch {
  display: inline-flex;
  gap: 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  padding: 3px;
}

.view-switch button {
  min-width: 48px;
  height: 28px;
  border-radius: 5px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.view-switch button.active {
  background: var(--accent);
  color: white;
}

.atlas-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  padding: 20px;
}

.atlas-layout.atlas-static {
  grid-template-columns: 1fr;
}

.atlas-figure {
  position: relative;
  justify-self: center;
  width: 100%;
  max-width: 650px;
  aspect-ratio: 655 / 865;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-elevated);
  box-shadow: inset 0 0 0 8px var(--bg-input);
}

.atlas-figure img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
}

.hotspot-layer {
  position: absolute;
  pointer-events: none;
}

.muscle-hotspot {
  position: absolute;
  pointer-events: auto;
  width: 22px;
  height: 22px;
  border: 2px solid rgba(255, 255, 255, 0.92);
  border-radius: 999px;
  background: rgba(21, 128, 61, 0.92);
  box-shadow: 0 6px 18px rgba(17, 17, 19, 0.18);
  transform: translate(-50%, -50%);
}

.muscle-hotspot span {
  position: absolute;
  inset: 4px;
  border-radius: inherit;
  background: white;
  opacity: 0.9;
}

.muscle-hotspot::after {
  content: "";
  position: absolute;
  inset: -7px;
  border: 1px solid rgba(21, 128, 61, 0.36);
  border-radius: inherit;
}

.muscle-hotspot.active,
.muscle-hotspot:hover {
  background: #2563eb;
}

.muscle-hotspot.active::after,
.muscle-hotspot:hover::after {
  border-color: rgba(96, 165, 250, 0.55);
}

.muscle-detail {
  display: grid;
  gap: 14px;
  align-self: start;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  padding: 16px;
}

.detail-head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.muscle-detail h2 {
  margin: 0;
  font-size: 18px;
  line-height: 1.2;
}

.muscle-detail section {
  display: grid;
  gap: 7px;
}

.muscle-detail h3 {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.muscle-detail p,
.exercise-library-placeholder p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.submuscle-list,
.action-list,
.lesson-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.submuscle-list span,
.action-list span,
.lesson-links span {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elevated);
  padding: 6px 9px;
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.submuscle-list span {
  background: var(--accent-muted);
  color: var(--accent);
}

.lesson-links span {
  background: var(--blue-muted);
  color: #2563eb;
}

.exercise-library {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-surface);
  box-shadow: 0 8px 22px rgba(17, 17, 19, 0.04);
}

.library-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--border);
  padding: 20px;
  background: var(--bg-surface);
}

.library-header h2 { margin: 0; font-size: 22px; line-height: 1.2; }
.library-header p { margin: 7px 0 0; color: var(--muted); font-size: 13px; }
.library-count { flex: 0 0 auto; border: 1px solid rgba(21, 128, 61, .38); border-radius: 999px; background: var(--accent-muted); padding: 6px 10px; color: var(--accent); font-size: 12px; font-weight: 800; }

.library-filters { display: grid; gap: 12px; border-bottom: 1px solid var(--border); padding: 16px 20px; background: var(--bg-elevated); }
.library-search { position: relative; display: block; max-width: 420px; }
.library-search > span { position: absolute; top: 50%; left: 12px; transform: translateY(-52%); color: var(--faint); font-size: 18px; }
.library-search input { width: 100%; height: 38px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg-surface); padding: 0 12px 0 35px; outline: 0; font-size: 12px; }
.library-search input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-muted); }
.library-filter-group { display: grid; grid-template-columns: 34px minmax(0, 1fr); align-items: start; gap: 8px; }
.library-filter-label { padding-top: 6px; color: var(--faint); font-size: 10px; font-weight: 900; letter-spacing: .08em; }
.library-chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.library-chip { min-height: 28px; border: 1px solid var(--border); border-radius: 999px; background: var(--bg-surface); padding: 0 10px; color: var(--muted); font-size: 12px; font-weight: 700; }
.library-chip:hover { border-color: var(--border-strong); color: var(--text); }
.library-chip.active { border-color: var(--accent); background: var(--accent-muted); color: var(--accent); box-shadow: inset 0 0 0 1px rgba(255, 90, 31, 0.08); }

.library-layout { display: grid; grid-template-columns: minmax(250px, 0.66fr) minmax(0, 1.34fr); min-height: 590px; }
.exercise-catalog { border-right: 1px solid var(--border); padding: 16px; background: var(--bg-elevated); }
.catalog-label, .section-label, .detail-overline { color: var(--muted); font-size: 10px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.catalog-label { margin: 0 0 9px; }
.exercise-cards { display: grid; gap: 8px; }
.exercise-card { display: grid; grid-template-columns: 36px minmax(0, 1fr) auto; align-items: center; gap: 10px; width: 100%; min-height: 64px; border: 1px solid transparent; border-radius: 6px; padding: 9px; text-align: left; }
.exercise-card:hover { background: var(--bg-surface); border-color: var(--border); }
.exercise-card.active { border-color: rgba(255, 90, 31, .35); background: var(--accent-muted); box-shadow: inset 3px 0 0 var(--accent); }
.exercise-card-mark { display: grid; width: 36px; height: 36px; place-items: center; border-radius: 6px; background: #e9eef3; color: #45515e; font-size: 10px; font-weight: 900; }
.exercise-card.active .exercise-card-mark { background: var(--accent); color: white; }
.exercise-card-copy { min-width: 0; }
.exercise-card-copy strong, .exercise-card-copy small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.exercise-card-copy strong { font-size: 13px; }
.exercise-card-copy small { margin-top: 2px; color: var(--muted); font-size: 11px; }
.exercise-card-level { color: var(--muted); font-size: 10px; font-weight: 800; }
.exercise-empty { padding: 24px 8px; color: var(--muted); font-size: 13px; text-align: center; }

.exercise-detail { display: grid; grid-template-columns: minmax(280px, .95fr) minmax(280px, 1.05fr); min-width: 0; }
.detail-media { position: relative; min-height: 0; border-right: 1px solid var(--border); background: var(--bg-elevated); }
.detail-media img { display: block; width: 100%; height: 100%; min-height: 590px; object-fit: cover; object-position: center; }
.detail-media.is-animation { aspect-ratio: 1; }
.detail-media.is-animation img { min-height: 0; object-fit: contain; }
.detail-level { position: absolute; top: 14px; left: 14px; border-radius: 5px; background: rgba(17, 17, 19, .86); padding: 5px 8px; color: white; font-size: 11px; font-weight: 800; }
.detail-media-placeholder { display: grid; min-height: 570px; place-content: center; gap: 8px; padding: 24px; text-align: center; }
.detail-media-placeholder span { color: var(--accent); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.detail-media-placeholder strong { font-size: 19px; }.detail-media-placeholder small { color: var(--muted); }
.exercise-detail-body { display: grid; align-content: start; gap: 20px; padding: 22px; }
.exercise-title-row h2 { margin: 5px 0 0; font-size: 25px; line-height: 1.15; }.exercise-title-row p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.detail-overline { color: var(--accent); }
.muscle-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }.muscle-summary div { border: 1px solid var(--border); border-radius: 6px; background: var(--bg-elevated); padding: 11px; }.muscle-summary span, .muscle-summary strong { display: block; }.muscle-summary span { color: var(--muted); font-size: 11px; }.muscle-summary strong { margin-top: 4px; font-size: 13px; }
.phase-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; margin-top: 8px; }.phase-row:has(.phase-button:only-child) { grid-template-columns: minmax(96px, 1fr); }.phase-button { display: grid; gap: 2px; min-height: 45px; border: 1px solid var(--border); border-radius: 5px; padding: 5px; color: var(--muted); font-size: 11px; text-align: left; }.phase-button span { color: var(--faint); font-size: 10px; font-weight: 900; }.phase-button.active, .phase-button:hover { border-color: var(--accent); background: var(--accent-muted); color: var(--accent); }.phase-button.active span { color: var(--accent); }
.coaching-grid { display: grid; gap: 18px; }.coaching-grid section { display: grid; gap: 8px; }.coaching-grid ul { display: grid; gap: 7px; margin: 0; padding: 0; list-style: none; }.coaching-grid li { position: relative; padding-left: 15px; color: #4b5563; font-size: 12px; line-height: 1.5; }.coaching-grid li::before { content: ""; position: absolute; top: .52em; left: 1px; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }.coaching-grid .mistake-list li { color: #b33935; }.coaching-grid .mistake-list li::before { background: #d8504b; }
.mistake-list { position: relative; z-index: 1; }.mistake-item { padding-left: 0 !important; }.mistake-item::before { display: none; }.mistake-item > button { position: relative; display: inline-flex; align-items: center; gap: 6px; min-height: 25px; padding: 0 4px 0 15px; color: #b33935; font-size: 12px; line-height: 1.5; text-align: left; }.mistake-item > button::before { content: ""; position: absolute; top: .52em; left: 1px; width: 6px; height: 6px; border-radius: 50%; background: #d8504b; }.mistake-item > button > b { color: #d8504b; font-size: 13px; }.mistake-item > button:hover > span:first-child, .mistake-item > button:focus-visible > span:first-child { color: #8f2521; text-decoration: underline; text-underline-offset: 3px; }.mistake-item > button:focus-visible { outline: 2px solid #d8504b; outline-offset: 2px; border-radius: 3px; }
.mistake-preview { position: absolute; z-index: 4; bottom: calc(100% + 8px); left: 0; display: grid; grid-template-columns: 104px minmax(150px, 1fr); gap: 10px; width: 300px; overflow: hidden; border: 1px solid var(--border-strong); border-radius: 6px; background: var(--bg-surface); padding: 7px; box-shadow: 0 12px 28px rgba(17, 17, 19, .16); opacity: 0; pointer-events: none; transform: translateY(4px); transition: opacity .12s, transform .12s; visibility: hidden; }.mistake-item > button:hover .mistake-preview, .mistake-item > button:focus-visible .mistake-preview { opacity: 1; transform: translateY(0); visibility: visible; }.mistake-preview img { width: 104px; height: 86px; border-radius: 4px; background: var(--bg-elevated); object-fit: contain; object-position: center; }.mistake-preview > span { display: grid; align-content: center; gap: 4px; min-width: 0; }.mistake-preview strong { color: #a63c38; font-size: 12px; }.mistake-preview small { color: #6b7280; font-size: 11px; line-height: 1.42; }
.coaching-visual-modal { position: fixed; inset: 0; z-index: 30; display: none; align-items: center; justify-content: center; padding: 24px; }.coaching-visual-modal.open { display: flex; }
.coaching-visual-backdrop { position: absolute; inset: 0; border: 0; background: rgba(17, 17, 19, .72); }
.coaching-visual-dialog { position: relative; z-index: 1; display: grid; width: min(760px, 100%); max-height: calc(100vh - 48px); margin: 0; overflow: hidden; border-radius: 8px; background: white; box-shadow: 0 24px 80px rgba(0, 0, 0, .34); }.coaching-visual-dialog figcaption { display: flex; align-items: center; justify-content: space-between; min-height: 48px; padding: 0 12px 0 16px; border-bottom: 1px solid var(--border); font-size: 14px; }.coaching-visual-dialog button { width: 30px; height: 30px; border: 0; border-radius: 5px; color: var(--muted); font-size: 22px; line-height: 1; }.coaching-visual-dialog button:hover { background: var(--bg-elevated); color: var(--text); }.coaching-visual-dialog img { display: block; width: 100%; max-height: calc(100vh - 96px); object-fit: contain; background: #fafafa; }

@media (max-width: 1120px) {
  .library-layout {
    grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.3fr);
  }

  .exercise-detail {
    grid-template-columns: minmax(250px, 0.9fr) minmax(250px, 1.1fr);
  }

  .detail-media img,
  .detail-media-placeholder {
    min-height: 520px;
  }
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: none;
}

.modal.open {
  display: block;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 17, 19, 0.54);
}

.modal-panel {
  position: absolute;
  inset: 28px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 14px;
  background: var(--bg-surface);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--border);
  padding: 14px 16px;
}

.modal-meta {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
}

.modal-header h2 {
  margin: 4px 0 0;
  font-size: 18px;
  line-height: 1.25;
}

.modal-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
}

.modal-body {
  min-height: 0;
  flex: 1;
  overflow: auto;
  background: #f8faf9;
}

.modal-body iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: white;
}

.summary-view {
  max-width: 900px;
  margin: 0 auto;
  padding: 22px;
}

.summary-view h3 {
  margin: 0 0 10px;
  font-size: 15px;
}

.summary-view ul {
  display: grid;
  gap: 8px;
  margin: 0 0 18px;
  padding-left: 18px;
}

.practice-box {
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--accent-muted);
  padding: 12px;
}

@media (max-width: 860px) {
  .app-shell {
    display: block;
    height: auto;
    overflow: visible;
  }

  .sidebar,
  .main-content {
    height: auto;
  }

  .main-content {
    padding: 18px 14px 32px;
  }

  .main-header {
    display: grid;
  }

  .nutrition-intro,
  .nutrition-grid,
  .nutrition-detail-grid,
  .nutrition-goal-grid { display: grid; }

  .nutrition-grid,
  .nutrition-detail-grid,
  .nutrition-goal-grid { grid-template-columns: 1fr; }

  .carb-hero { grid-template-columns: 1fr; }
  .carb-energy-fact {
    grid-template-columns: max-content max-content minmax(0, 1fr);
    align-items: baseline;
    gap: 12px;
    border-top: 1px solid #3f3f46;
    border-left: 0;
    padding: 22px 28px;
  }
  .carb-energy-fact strong { margin-top: 0; }
  .carb-energy-fact strong b { font-size: 48px; }
  .carb-energy-fact p { max-width: none; margin: 0; }
  .carb-source-spectrum,
  .carb-taxonomy-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .carb-source-spectrum article:nth-child(2) { border-right: 0; }
  .carb-source-spectrum article:nth-child(-n + 2) { border-bottom: 1px solid var(--border); }
  .carb-taxonomy-grid article:nth-child(2) { border-right: 0; }
  .carb-taxonomy-grid article:nth-child(-n + 2) { border-bottom: 1px solid #3f3f46; padding-bottom: 18px; }
  .carb-taxonomy-grid article:nth-child(3) { padding-left: 0; }
  .digestion-stage,
  .metabolism-stage { grid-template-columns: 1fr; gap: 14px; }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .atlas-layout {
    grid-template-columns: 1fr;
  }

  .atlas-toolbar {
    display: grid;
  }

  .exercise-tabs {
    width: 100%;
  }

  .library-header {
    padding: 16px;
  }

  .library-filters {
    padding: 14px 16px;
  }

  .library-layout,
  .exercise-detail {
    grid-template-columns: 1fr;
  }

  .exercise-catalog,
  .detail-media {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .exercise-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-media img,
  .detail-media-placeholder {
    min-height: 360px;
    max-height: 470px;
  }

  .modal-panel {
    inset: 10px;
  }

  .modal-header {
    display: grid;
  }
}

@media (max-width: 560px) {
  .quick-links { width: 100%; justify-content: space-between; }
  .header-insight { min-width: 0; }

  .nutrition-intro h2 { font-size: 21px; }
  body[data-active-tab="nutrition"] .sidebar-context { display: none; }
  body[data-active-tab="nutrition"] .main-header { margin-bottom: 14px; }
  body[data-active-tab="nutrition"] .main-header p { display: none; }
  .nutrition-panel { gap: 30px; }
  .carb-hero { min-height: 0; }
  .carb-hero-copy { padding: 24px 22px; }
  .carb-hero-copy h2 { font-size: 30px; }
  .carb-hero-copy > p { font-size: 13px; }
  .carb-hero-topics { margin-top: 20px; }
  .carb-energy-fact {
    grid-template-columns: max-content minmax(0, 1fr);
    gap: 2px 12px;
    padding: 18px 22px;
  }
  .carb-energy-fact > span { grid-row: 1; }
  .carb-energy-fact strong { grid-row: 1 / span 2; }
  .carb-energy-fact strong b { font-size: 44px; }
  .carb-energy-fact p { grid-column: 1; font-size: 11px; }
  .carb-section-heading { grid-template-columns: 30px minmax(0, 1fr); gap: 10px; }
  .carb-section-heading h2 { font-size: 21px; }
  .carb-section-heading p { font-size: 12px; }
  .carb-source-spectrum article { min-height: 150px; padding: 16px 14px; }
  .carb-source-spectrum strong { font-size: 16px; }
  .carb-taxonomy { padding: 22px 18px; }
  .carb-taxonomy-grid article { padding: 18px 12px 2px; }
  .carb-taxonomy-grid strong { font-size: 18px; }
  .carb-flow-canvas { gap: 18px; padding: 18px 16px; }
  .digestion-row { grid-template-columns: 56px minmax(28px, 1fr) minmax(112px, 1.55fr); }
  .digestion-row > i { margin: 0 10px; }
  .digestion-output { gap: 6px; }
  .digestion-output span { display: none; }
  .metabolism-lanes { grid-template-columns: 1fr; }
  .metabolism-lane > header { min-height: 0; }
  .carb-flow-note { grid-template-columns: 1fr; gap: 4px; }
  .compare-head,
  .compare-row { grid-template-columns: 72px repeat(2, minmax(0, 1fr)); }
  .compare-head > *,
  .compare-row > * { min-height: 52px; padding: 10px 8px; }
  .compare-row > b { font-size: 12px; }

  .exercise-tab {
    padding: 0 10px;
  }

  .atlas-toolbar,
  .atlas-layout {
    padding: 14px;
  }

  .library-header {
    display: grid;
    gap: 10px;
  }

  .library-count {
    width: fit-content;
  }

  .library-filter-group {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .library-filter-label {
    padding-top: 0;
  }

  .exercise-cards,
  .muscle-summary {
    grid-template-columns: 1fr;
  }

  .exercise-detail-body {
    padding: 16px;
  }
}