:root {
  color-scheme: light;
  --bg: #f4f7f6;
  --panel: #ffffff;
  --panel-soft: #f8faf9;
  --text: #17212b;
  --muted: #65717d;
  --line: #dce4e2;
  --teal: #007c89;
  --teal-dark: #005e68;
  --green: #247447;
  --orange: #c7621d;
  --blue: #215ea6;
  --red: #b23b3b;
  --shadow: 0 12px 30px rgba(23, 33, 43, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

button,
input,
select {
  font: inherit;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 96px;
  padding: 20px 28px;
  border-bottom: 1px solid var(--line);
  background: #ffffff;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--teal-dark);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: 25px;
  line-height: 1.22;
}

h2 {
  font-size: 17px;
  line-height: 1.3;
}

.status-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.pill,
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 4px 9px;
  background: var(--panel-soft);
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.pill.ready,
.badge.ready {
  border-color: rgba(36, 116, 71, 0.25);
  background: rgba(36, 116, 71, 0.1);
  color: var(--green);
}

.pill.warning,
.badge.warning {
  border-color: rgba(199, 98, 29, 0.28);
  background: rgba(199, 98, 29, 0.11);
  color: var(--orange);
}

.pill.error,
.badge.error {
  border-color: rgba(178, 59, 59, 0.25);
  background: rgba(178, 59, 59, 0.1);
  color: var(--red);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(520px, 1fr) minmax(270px, 350px);
  gap: 16px;
  padding: 16px;
}

.panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.controls-panel,
.result-panel {
  padding: 16px;
}

.live-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 16px;
}

.panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.compact-title {
  margin-top: 20px;
  margin-bottom: 10px;
}

.icon-button {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--blue);
  cursor: pointer;
}

.icon-button:hover {
  border-color: rgba(33, 94, 166, 0.42);
  background: rgba(33, 94, 166, 0.06);
}

.field,
.field-group {
  display: grid;
  gap: 8px;
  margin: 0 0 14px;
}

.field span,
.field-group legend {
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.field strong {
  color: var(--text);
  font-size: 13px;
}

select,
input[type="number"],
input[type="password"] {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: #ffffff;
  color: var(--text);
}

select:focus,
input:focus {
  outline: 2px solid rgba(0, 124, 137, 0.2);
  border-color: var(--teal);
}

.field-group {
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.field-group legend {
  padding: 0 6px;
}

.field-group label {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 28px;
  color: var(--text);
  font-size: 14px;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--teal);
}

.hidden {
  display: none;
}

.primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  min-height: 46px;
  border: 0;
  border-radius: 8px;
  background: var(--teal);
  color: #ffffff;
  font-weight: 760;
  cursor: pointer;
}

.primary-action:hover {
  background: var(--teal-dark);
}

.primary-action:disabled {
  cursor: wait;
  opacity: 0.62;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.metric-row > div {
  min-height: 74px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: var(--panel-soft);
}

.metric-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 680;
}

.metric-row strong {
  font-size: 22px;
  line-height: 1.15;
}

.canvas-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 360px;
}

.design-wrap canvas {
  height: 190px;
}

.result-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 9px;
  margin: 0;
}

.result-list div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}

.result-list dt {
  color: var(--muted);
  font-size: 13px;
}

.result-list dd {
  margin: 0;
  text-align: right;
  font-weight: 730;
}

.history-table-wrap {
  max-height: 260px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.history-table th,
.history-table td {
  padding: 9px 8px;
  border-bottom: 1px solid var(--line);
  text-align: right;
  white-space: nowrap;
}

.history-table th:first-child,
.history-table td:first-child {
  text-align: left;
}

.history-table th {
  position: sticky;
  top: 0;
  background: #ffffff;
  color: var(--muted);
  font-size: 12px;
}

.code-block {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--panel-soft);
}

.code-block summary {
  cursor: pointer;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.code-block pre {
  overflow: auto;
  margin: 12px 0 0;
  color: #1d2935;
  font-size: 12px;
  line-height: 1.45;
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  }

  .result-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 820px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .status-strip {
    justify-content: flex-start;
  }

  .workspace {
    grid-template-columns: 1fr;
    padding: 10px;
  }

  .metric-row {
    grid-template-columns: 1fr;
  }
}

.portal-body {
  background: #ffffff;
}

.demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 84px;
  padding: 18px clamp(18px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: #ffffff;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #2b333c;
  text-decoration: none;
  font-size: 22px;
  font-weight: 760;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--teal);
  color: #ffffff;
  font-size: 20px;
  font-weight: 850;
}

.demo-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 22px;
}

.demo-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 730;
}

.demo-nav a:hover {
  color: var(--teal-dark);
}

.demo-page {
  width: min(1340px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 44px 0 70px;
}

.intro-band {
  max-width: 880px;
  margin-bottom: 30px;
}

.intro-band h1 {
  margin-bottom: 12px;
  font-size: clamp(32px, 4vw, 54px);
}

.intro-band p {
  margin: 0;
  color: #4d5964;
  font-size: 17px;
  line-height: 1.7;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.demo-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(23, 33, 43, 0.06);
}

.demo-card img,
.demo-visual {
  display: block;
  width: 100%;
  aspect-ratio: 1.5;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.demo-visual {
  position: relative;
  overflow: hidden;
  background: #eef3f6;
}

.demo-visual::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(23, 33, 43, 0.1);
  border-radius: 8px;
}

.v-shape,
.v-line {
  position: absolute;
  display: block;
}

.v-line {
  height: 3px;
  border-radius: 999px;
  background: #263747;
  transform-origin: left center;
}

.demo-visual--intro {
  background:
    linear-gradient(135deg, rgba(33, 94, 166, 0.14), transparent 52%),
    #f5f8fb;
}

.demo-visual--intro .s1,
.demo-visual--intro .s2,
.demo-visual--intro .s3,
.demo-visual--intro .s4,
.demo-visual--intro .s5 {
  width: 18px;
  height: 18px;
  border-radius: 50%;
}

.demo-visual--intro .s1 { left: 16%; top: 58%; background: #2f80ed; }
.demo-visual--intro .s2 { left: 29%; top: 65%; background: #00a37a; }
.demo-visual--intro .s3 { left: 43%; top: 62%; background: #ff817c; }
.demo-visual--intro .s4 { left: 58%; top: 54%; background: #f5c84b; }
.demo-visual--intro .s5 { right: 18%; top: 44%; background: #00a37a; }
.demo-visual--intro .l1 { left: 18%; top: 63%; width: 64%; transform: rotate(-7deg); background: #6b7c8d; }
.demo-visual--intro .l2 { left: 18%; bottom: 20%; width: 58%; height: 18px; border-radius: 0; background: linear-gradient(90deg, #007c89 62%, #dbe7ee 62%); }

.demo-visual--materials {
  background: linear-gradient(135deg, #f7fbff, #eef0ff);
}

.demo-visual--materials::after {
  content: "";
  position: absolute;
  left: 15%;
  top: 18%;
  width: 70%;
  height: 64%;
  background:
    linear-gradient(#263747 0 0) 0 0 / 100% 2px,
    linear-gradient(#263747 0 0) 0 33% / 100% 2px,
    linear-gradient(#263747 0 0) 0 66% / 100% 2px,
    linear-gradient(#263747 0 0) 0 100% / 100% 2px,
    linear-gradient(90deg, #263747 0 2px, transparent 2px 100%) 0 0 / 16.66% 100%;
  background-repeat: no-repeat;
  opacity: 0.28;
}

.demo-visual--materials .v-shape {
  width: 13%;
  height: 18%;
  border-radius: 8px;
  border: 2px solid rgba(23, 33, 43, 0.55);
}

.demo-visual--materials .s1 { left: 19%; top: 22%; background: #5869df; }
.demo-visual--materials .s2 { left: 35%; top: 22%; background: #8057ee; }
.demo-visual--materials .s3 { left: 51%; top: 22%; background: #4db9e8; }
.demo-visual--materials .s4 { left: 27%; top: 48%; background: #8f6048; }
.demo-visual--materials .s5 { left: 57%; top: 48%; background: #e3c76e; }

.demo-visual--chemical {
  background: linear-gradient(135deg, #fff8f1, #f2fbff);
}

.demo-visual--chemical .s1,
.demo-visual--chemical .s2,
.demo-visual--chemical .s3 {
  bottom: 21%;
  width: 13%;
  height: 47%;
  border: 3px solid #263747;
  border-radius: 999px 999px 8px 8px;
}

.demo-visual--chemical .s1 { left: 25%; background: #46b7e8; }
.demo-visual--chemical .s2 { left: 43%; height: 60%; background: #ff817c; }
.demo-visual--chemical .s3 { left: 61%; background: #f2c94c; }
.demo-visual--chemical .s4 {
  left: 20%;
  top: 25%;
  width: 62%;
  height: 3px;
  background: #263747;
  transform: rotate(-5deg);
}
.demo-visual--chemical .s5 {
  right: 13%;
  top: 22%;
  width: 44px;
  height: 44px;
  border: 4px solid #00a37a;
  border-radius: 50%;
}

.demo-visual--heat {
  background: linear-gradient(135deg, #eef8fb, #f9fbff);
}

.demo-visual--heat .v-shape {
  bottom: 23%;
  width: 9%;
  border-radius: 8px 8px 0 0;
  background: #b66c44;
}

.demo-visual--heat .s1 { left: 22%; height: 42%; }
.demo-visual--heat .s2 { left: 34%; height: 58%; }
.demo-visual--heat .s3 { left: 46%; height: 50%; }
.demo-visual--heat .s4 { left: 58%; height: 66%; }
.demo-visual--heat .s5 { left: 70%; height: 38%; }
.demo-visual--heat .l1 { left: 17%; top: 67%; width: 70%; height: 16px; background: #007c89; opacity: 0.82; }
.demo-visual--heat .l2 { left: 17%; top: 42%; width: 72%; transform: rotate(-10deg); background: #263747; }

.demo-visual--traffic {
  background: #f7fbf8;
}

.demo-visual--traffic::after {
  content: "";
  position: absolute;
  inset: 19% 12%;
  background:
    linear-gradient(90deg, transparent 48%, #748391 48% 52%, transparent 52%),
    linear-gradient(transparent 48%, #748391 48% 52%, transparent 52%);
  opacity: 0.8;
}

.demo-visual--traffic .v-shape {
  width: 19px;
  height: 19px;
  border-radius: 50%;
  border: 3px solid #ffffff;
  z-index: 1;
}

.demo-visual--traffic .s1 { left: 26%; top: 24%; background: #ff817c; }
.demo-visual--traffic .s2 { left: 48%; top: 43%; background: #f2c94c; }
.demo-visual--traffic .s3 { right: 23%; top: 28%; background: #00a37a; }
.demo-visual--traffic .s4 { left: 35%; bottom: 24%; background: #2f80ed; }
.demo-visual--traffic .s5 { right: 33%; bottom: 25%; background: #8f6048; }

.demo-visual--mixing {
  background: linear-gradient(135deg, #fff7f7, #f2fbff);
}

.demo-visual--mixing .s1 {
  left: 26%;
  top: 20%;
  width: 46%;
  height: 56%;
  border: 4px solid #263747;
  border-radius: 8px 8px 30px 30px;
  background: linear-gradient(180deg, #ffffff 0 35%, #ffd85f 35% 100%);
}

.demo-visual--mixing .s2 {
  left: 47%;
  top: 16%;
  width: 5px;
  height: 52%;
  background: #263747;
}

.demo-visual--mixing .s3,
.demo-visual--mixing .s4 {
  left: 38%;
  top: 52%;
  width: 26%;
  height: 5px;
  border-radius: 999px;
  background: #263747;
}

.demo-visual--mixing .s3 { transform: rotate(28deg); }
.demo-visual--mixing .s4 { transform: rotate(-28deg); }
.demo-visual--mixing .s5 {
  left: 37%;
  top: 41%;
  width: 24%;
  height: 15%;
  border: 3px solid #007c89;
  border-radius: 50%;
}

.demo-visual--portfolio {
  background:
    linear-gradient(90deg, rgba(23, 33, 43, 0.07) 1px, transparent 1px) 0 0 / 42px 100%,
    linear-gradient(rgba(23, 33, 43, 0.07) 1px, transparent 1px) 0 0 / 100% 34px,
    #edf6f8;
}
.demo-visual--portfolio .v-line { height: 7px; }
.demo-visual--portfolio .l1 { left: 14%; bottom: 31%; width: 68%; transform: rotate(-13deg); background: #00a37a; }
.demo-visual--portfolio .l2 { left: 16%; bottom: 45%; width: 58%; transform: rotate(11deg); background: #d84d4d; }
.demo-visual--portfolio .v-shape {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #263747;
}
.demo-visual--portfolio .s1 { left: 20%; bottom: 38%; }
.demo-visual--portfolio .s2 { left: 37%; bottom: 50%; background: #00a37a; }
.demo-visual--portfolio .s3 { left: 53%; bottom: 35%; background: #d84d4d; }
.demo-visual--portfolio .s4 { left: 69%; bottom: 60%; background: #f2c94c; }
.demo-visual--portfolio .s5 { right: 17%; bottom: 53%; background: #00a37a; }

.demo-visual--traffic-grid,
.demo-visual--tsp,
.demo-visual--routing {
  background: #f6fbf7;
}
.demo-visual--traffic-grid::after,
.demo-visual--tsp::after,
.demo-visual--routing::after {
  content: "";
  position: absolute;
  inset: 18% 13%;
  background:
    linear-gradient(90deg, transparent 47%, #748391 47% 53%, transparent 53%),
    linear-gradient(transparent 47%, #748391 47% 53%, transparent 53%);
  opacity: 0.78;
}
.demo-visual--traffic-grid .v-shape,
.demo-visual--tsp .v-shape,
.demo-visual--routing .v-shape {
  z-index: 1;
  width: 20px;
  height: 20px;
  border: 3px solid #ffffff;
  border-radius: 50%;
  background: #e66554;
}
.demo-visual--traffic-grid .s1,
.demo-visual--tsp .s1,
.demo-visual--routing .s1 { left: 23%; top: 25%; }
.demo-visual--traffic-grid .s2,
.demo-visual--tsp .s2,
.demo-visual--routing .s2 { left: 43%; top: 48%; background: #2f80ed; }
.demo-visual--traffic-grid .s3,
.demo-visual--tsp .s3,
.demo-visual--routing .s3 { right: 25%; top: 26%; background: #00a37a; }
.demo-visual--traffic-grid .s4,
.demo-visual--tsp .s4,
.demo-visual--routing .s4 { left: 31%; bottom: 24%; background: #f2c94c; }
.demo-visual--traffic-grid .s5,
.demo-visual--tsp .s5,
.demo-visual--routing .s5 { right: 31%; bottom: 25%; background: #8057ee; }
.demo-visual--tsp .l1 { z-index: 1; left: 25%; top: 32%; width: 54%; transform: rotate(14deg); background: #263747; }
.demo-visual--tsp .l2 { z-index: 1; left: 33%; bottom: 32%; width: 42%; transform: rotate(-20deg); background: #263747; }
.demo-visual--routing .l1 { z-index: 1; left: 22%; top: 55%; width: 61%; height: 10px; background: #f2c94c; }

.demo-visual--assignment,
.demo-visual--meeting {
  background: linear-gradient(135deg, #f5f7ff, #f9fbff);
}
.demo-visual--assignment::after,
.demo-visual--meeting::after {
  content: "";
  position: absolute;
  inset: 21% 16%;
  background:
    linear-gradient(#9ec6da 0 0) 0 24% / 100% 3px,
    linear-gradient(#9ec6da 0 0) 0 50% / 100% 3px,
    linear-gradient(#9ec6da 0 0) 0 76% / 100% 3px;
  background-repeat: no-repeat;
}
.demo-visual--assignment .v-shape,
.demo-visual--meeting .v-shape {
  width: 18%;
  height: 18%;
  border-radius: 8px;
}
.demo-visual--assignment .s1 { left: 20%; top: 28%; background: #ffd85f; }
.demo-visual--assignment .s2 { left: 42%; top: 27%; background: #ff817c; }
.demo-visual--assignment .s3 { left: 64%; top: 28%; background: #2f80ed; }
.demo-visual--assignment .s4 { left: 30%; top: 58%; background: #00a37a; }
.demo-visual--assignment .s5 { left: 55%; top: 58%; background: #8057ee; }
.demo-visual--meeting .v-shape { width: 14%; height: 14%; }
.demo-visual--meeting .s1 { left: 24%; top: 23%; background: #ffd85f; }
.demo-visual--meeting .s2 { left: 43%; top: 33%; background: #ff817c; }
.demo-visual--meeting .s3 { left: 62%; top: 23%; background: #ffd85f; }
.demo-visual--meeting .s4 { left: 35%; top: 55%; background: #2f80ed; }
.demo-visual--meeting .s5 { left: 57%; top: 58%; background: #00a37a; }

.demo-visual--sudoku,
.demo-visual--picross,
.demo-visual--coloring {
  background: #f8fbfd;
}
.demo-visual--sudoku::after,
.demo-visual--picross::after,
.demo-visual--coloring::after {
  content: "";
  position: absolute;
  inset: 17% 25%;
  border: 4px solid #263747;
  background:
    linear-gradient(90deg, transparent 24%, #263747 24% 26%, transparent 26% 49%, #263747 49% 51%, transparent 51% 74%, #263747 74% 76%, transparent 76%),
    linear-gradient(transparent 24%, #263747 24% 26%, transparent 26% 49%, #263747 49% 51%, transparent 51% 74%, #263747 74% 76%, transparent 76%);
}
.demo-visual--sudoku .v-shape,
.demo-visual--picross .v-shape,
.demo-visual--coloring .v-shape {
  width: 12%;
  height: 12%;
  border-radius: 5px;
  background: #f2c94c;
  z-index: 1;
}
.demo-visual--sudoku .s1 { left: 34%; top: 24%; background: #ffffff; }
.demo-visual--sudoku .s2 { left: 47%; top: 36%; background: #edf6f8; }
.demo-visual--sudoku .s3 { left: 57%; top: 50%; background: #ffffff; }
.demo-visual--sudoku .s4 { left: 38%; top: 62%; background: #edf6f8; }
.demo-visual--picross .s1 { left: 31%; top: 24%; background: #263747; }
.demo-visual--picross .s2 { left: 43%; top: 36%; background: #263747; }
.demo-visual--picross .s3 { left: 55%; top: 48%; background: #263747; }
.demo-visual--picross .s4 { left: 43%; top: 60%; background: #263747; }
.demo-visual--coloring .s1 { left: 30%; top: 26%; background: #f2c94c; }
.demo-visual--coloring .s2 { left: 43%; top: 26%; background: #ff817c; }
.demo-visual--coloring .s3 { left: 56%; top: 38%; background: #00a37a; }
.demo-visual--coloring .s4 { left: 36%; top: 55%; background: #2f80ed; }
.demo-visual--coloring .s5 { left: 51%; top: 60%; background: #8057ee; }

.demo-visual--carpool,
.demo-visual--taxi {
  background: linear-gradient(180deg, #eff7fa 0 54%, #f8fbfd 54% 100%);
}
.demo-visual--carpool .s1,
.demo-visual--taxi .s1 {
  left: 22%;
  top: 43%;
  width: 45%;
  height: 20%;
  border-radius: 18px 26px 8px 8px;
  background: #2f80ed;
}
.demo-visual--taxi .s1 { background: #f2c94c; }
.demo-visual--carpool .s2,
.demo-visual--taxi .s2,
.demo-visual--carpool .s3,
.demo-visual--taxi .s3 {
  top: 59%;
  width: 10%;
  height: 10%;
  border: 4px solid #263747;
  border-radius: 50%;
  background: #ffffff;
}
.demo-visual--carpool .s2,
.demo-visual--taxi .s2 { left: 28%; }
.demo-visual--carpool .s3,
.demo-visual--taxi .s3 { left: 58%; }
.demo-visual--carpool .s4,
.demo-visual--taxi .s4 {
  right: 20%;
  top: 24%;
  width: 16%;
  height: 36%;
  border: 4px solid #263747;
  border-radius: 14px;
  background: #ffffff;
}
.demo-visual--carpool .s5,
.demo-visual--taxi .s5 {
  right: 24%;
  top: 35%;
  width: 8%;
  height: 8%;
  border-radius: 50%;
  background: #e66554;
}

.demo-image-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.demo-card-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 390px;
  padding: 26px 28px 30px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  border-radius: 8px;
  padding: 5px 20px;
  background: #ff8b86;
  color: #222a33;
  font-size: 14px;
  font-weight: 820;
}

.tag.dark {
  background: #1c2340;
  color: #ffffff;
}

.demo-card h2 {
  margin: 18px 0 14px;
  font-size: 30px;
  line-height: 1.18;
}

.demo-card h2 a {
  color: inherit;
  text-decoration: none;
}

.demo-card h2 a:hover {
  color: var(--teal-dark);
}

.portal-tools {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0 32px;
}

.portal-tools div,
.mode-stack div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--panel-soft);
}

.portal-tools strong,
.mode-stack strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
}

.portal-tools span,
.mode-stack span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.difficulty {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  color: #9aa4ae;
  font-size: 15px;
  font-weight: 750;
}

.difficulty b {
  color: #ff817c;
  letter-spacing: 2px;
}

.demo-card p {
  margin: 0 0 24px;
  color: #5e6873;
  font-size: 16px;
  line-height: 1.65;
}

.card-button,
.launch-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 10px 22px;
  background: #3856c7;
  color: #ffffff;
  text-decoration: none;
  font-weight: 780;
}

.card-button {
  margin-top: auto;
}

.card-button:hover,
.launch-button:hover {
  background: #2944a8;
}

.notebook-layout {
  display: grid;
  grid-template-columns: minmax(280px, 370px) minmax(0, 1fr);
  gap: 24px;
  width: min(1360px, calc(100vw - 36px));
  margin: 0 auto;
  padding: 28px 0 70px;
}

.demo-detail-page,
.run-page {
  width: min(1360px, calc(100vw - 36px));
  margin: 0 auto;
  padding: 0 0 70px;
}

.run-strip {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  min-height: 74px;
  margin: 0 calc(50% - 50vw) 24px;
  padding: 14px max(18px, calc((100vw - 1360px) / 2 + 18px));
  background: #f4f5fc;
}

.run-strip > div {
  text-align: right;
}

.inline-status {
  margin: 8px 0 0;
}

.launch-panel {
  position: sticky;
  top: 16px;
  align-self: start;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(23, 33, 43, 0.06);
}

.launch-panel h1 {
  margin: 0 0 10px;
  font-size: 28px;
}

.launch-panel p {
  color: #5a6671;
  line-height: 1.65;
}

.mode-stack {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
}

.launch-status {
  margin: 16px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--panel-soft);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.launch-status.ready {
  border-color: rgba(36, 116, 71, 0.25);
  background: rgba(36, 116, 71, 0.1);
  color: var(--green);
}

.launch-status.warning {
  border-color: rgba(199, 98, 29, 0.28);
  background: rgba(199, 98, 29, 0.11);
  color: var(--orange);
}

.launch-status.error {
  border-color: rgba(178, 59, 59, 0.25);
  background: rgba(178, 59, 59, 0.1);
  color: var(--red);
}

.launch-actions {
  display: grid;
  gap: 10px;
}

.launch-button {
  width: 100%;
  background: #ffffff;
  color: #3856c7;
  border-color: rgba(56, 86, 199, 0.32);
}

.launch-button.primary {
  background: #3856c7;
  color: #ffffff;
}

.launch-button.disabled {
  cursor: not-allowed;
  border-color: var(--line);
  background: #eef2f4;
  color: #8b96a1;
}

.notebook-preview {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f1f3f5;
  padding: 24px;
}

.lesson-blocks {
  display: contents;
}

.detail-title {
  margin: 0 0 16px;
  font-size: 36px;
}

.nb-cell {
  position: relative;
  margin: 0 auto 18px;
  border: 1px solid #bfc8ce;
  border-left: 6px solid #4aa3df;
  border-radius: 2px;
  background: #ffffff;
  padding: 28px 32px;
}

.markdown-cell h2 {
  margin-bottom: 14px;
  font-size: 30px;
}

.markdown-cell p {
  color: #2b333c;
  font-size: 17px;
  line-height: 1.65;
}

.markdown-cell ul {
  margin: 10px 0 0;
  padding-left: 22px;
  color: #2b333c;
  font-size: 16px;
  line-height: 1.65;
}

.markdown-cell li + li {
  margin-top: 5px;
}

.callout-cell {
  border-left-color: var(--orange);
  background: #fffaf4;
}

.source-cell {
  border-left-color: #8ea0b8;
}

.source-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.source-links a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 5px 10px;
  color: var(--blue);
  text-decoration: none;
  font-size: 13px;
  font-weight: 720;
}

.code-cell {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 12px;
  padding: 0;
}

.prompt {
  padding: 20px 0 0 14px;
  color: #8c96a0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
}

.code-cell pre {
  overflow: auto;
  margin: 0;
  padding: 20px 20px 20px 0;
  color: #1f2a35;
  font-size: 14px;
  line-height: 1.55;
}

.code-cell[data-caption]::after {
  content: attr(data-caption);
  position: absolute;
  right: 12px;
  top: 8px;
  color: #7a8793;
  font-size: 12px;
  font-weight: 700;
}

.run-hero {
  max-width: 920px;
  padding: 48px 0 10px;
}

.run-hero h1 {
  margin-bottom: 12px;
  font-size: clamp(34px, 4vw, 52px);
}

.run-hero p {
  color: #4d5964;
  font-size: 17px;
  line-height: 1.7;
}

.runtime-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0 24px;
}

.runtime-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 290px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(23, 33, 43, 0.05);
}

.runtime-card.recommended {
  border-color: rgba(0, 124, 137, 0.35);
}

.runtime-card h2 {
  margin: 16px 0 10px;
  font-size: 28px;
}

.runtime-card p {
  margin: 0 0 20px;
  color: #5e6873;
  line-height: 1.58;
}

.runtime-card .launch-button {
  margin-top: auto;
}

.cost-band {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: #ffffff;
}

.cost-band h2 {
  font-size: 24px;
}

.load-error {
  color: var(--red);
  font-weight: 700;
}

@media (max-width: 1040px) {
  .demo-grid,
  .notebook-layout,
  .runtime-grid,
  .portal-tools {
    grid-template-columns: 1fr;
  }

  .launch-panel {
    position: static;
  }

  .run-strip {
    align-items: flex-start;
    flex-direction: column;
  }

  .run-strip > div {
    text-align: left;
  }
}

@media (max-width: 700px) {
  .demo-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .demo-nav {
    justify-content: flex-start;
    gap: 14px;
  }

  .demo-page,
  .notebook-layout {
    width: min(100vw - 22px, 1360px);
  }

  .demo-card-body {
    min-height: auto;
  }

  .code-cell {
    grid-template-columns: 1fr;
  }

  .prompt {
    padding: 16px 18px 0;
  }

  .code-cell pre {
    padding: 8px 18px 18px;
  }
}