:root {
  --bg: #f4efe7;
  --paper: #fffaf1;
  --ink: #1d1f1e;
  --muted: #6d675f;
  --accent: #cb5f2d;
  --accent-soft: #f6d7c8;
  --teal: #0f766e;
  --teal-soft: #cceee8;
  --line: #e3d9cb;
  --shadow: 0 20px 40px rgba(63, 43, 24, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(203, 95, 45, 0.12), transparent 30%),
    radial-gradient(circle at top right, rgba(15, 118, 110, 0.12), transparent 28%),
    linear-gradient(180deg, #f6f1e8 0%, #f2ece3 100%);
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 24px auto 48px;
}

.hero,
.card {
  background: rgba(255, 250, 241, 0.92);
  border: 1px solid rgba(227, 217, 203, 0.9);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero {
  border-radius: 28px;
  padding: 34px;
  display: grid;
  grid-template-columns: 1.35fr 0.95fr;
  gap: 24px;
  margin-bottom: 22px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
}

.hero h1,
.card h3 {
  margin: 0;
}

.hero h1 {
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.02;
}

.hero-text {
  font-size: 18px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 56ch;
}

.hero-tags,
.result-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-tags span,
.result-pills span {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  font-weight: 600;
  font-size: 14px;
}

.hero-panel {
  display: grid;
  gap: 14px;
}

.metric-card {
  padding: 20px 22px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(246, 215, 200, 0.7));
  border: 1px solid rgba(227, 217, 203, 0.9);
}

.metric-card p {
  margin: 0 0 8px;
  color: var(--muted);
}

.metric-card h2 {
  margin: 0;
  font-size: 38px;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-bottom: 22px;
}

.card {
  border-radius: 24px;
  padding: 28px;
}

.accent-card {
  background:
    linear-gradient(135deg, rgba(203, 95, 45, 0.16), rgba(255, 250, 241, 0.95)),
    rgba(255, 250, 241, 0.9);
}

.architecture-card {
  margin-bottom: 22px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 22px;
}

.section-desc,
.card-note,
.legend-item p,
.flow-node p {
  color: var(--muted);
  line-height: 1.7;
}

.architecture-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 14px;
  align-items: center;
}

.flow-node {
  padding: 20px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: #fffdf8;
  min-height: 188px;
}

.flow-node.warm {
  background: linear-gradient(180deg, rgba(246, 215, 200, 0.85), rgba(255, 253, 248, 1));
}

.flow-node.cool {
  background: linear-gradient(180deg, rgba(204, 238, 232, 0.85), rgba(255, 253, 248, 1));
}

.flow-node h4 {
  margin: 8px 0 10px;
  font-size: 22px;
}

.node-index {
  display: inline-flex;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  align-items: center;
  justify-content: center;
  background: rgba(29, 31, 30, 0.08);
  font-weight: 700;
}

.flow-arrow {
  font-size: 30px;
  color: var(--accent);
  font-weight: 700;
}

.legend-list {
  display: grid;
  gap: 16px;
}

.legend-item {
  display: flex;
  gap: 14px;
  align-items: start;
}

.swatch {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  margin-top: 5px;
  flex: 0 0 auto;
}

.swatch.baseline {
  background: var(--accent);
}

.swatch.optimized {
  background: var(--teal);
}

.clean-list {
  margin: 16px 0 0;
  padding-left: 20px;
  line-height: 1.9;
}

.chart-area {
  display: grid;
  gap: 18px;
}

.origin-panel {
  margin-bottom: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 253, 248, 0.94), rgba(242, 236, 227, 0.92));
}

.origin-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 16px;
}

.origin-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.origin-chart-card {
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fffdfa;
  padding: 16px;
}

.origin-chart-card h4 {
  margin: 0 0 12px;
  font-size: 17px;
}

.origin-chart {
  min-height: 300px;
  position: relative;
}

.origin-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}

.origin-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.legend-line {
  width: 26px;
  height: 0;
  border-top-width: 3px;
  border-top-style: solid;
  position: relative;
}

.legend-line::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -5px;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: currentColor;
}

.legend-line.baseline {
  color: var(--accent);
  border-top-color: var(--accent);
}

.legend-line.optimized {
  color: var(--teal);
  border-top-color: var(--teal);
}

.legend-line.speedup {
  color: #4b56d2;
  border-top-color: #4b56d2;
}

.overview-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.overview-badge {
  min-width: 180px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.76);
}

.overview-badge strong {
  display: block;
  font-size: 26px;
  margin-bottom: 4px;
}

.overview-badge span {
  color: var(--muted);
}

.table-details {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.74);
  margin-bottom: 18px;
  overflow: hidden;
}

.table-details summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 18px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  font-weight: 700;
}

.table-details summary::-webkit-details-marker {
  display: none;
}

.summary-meta {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

.table-details[open] summary {
  border-bottom: 1px solid var(--line);
}

.group-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 18px;
}

.group-list {
  padding: 12px;
}

.group-item {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fffdf9;
  padding: 14px;
  margin-bottom: 12px;
}

.group-item:last-child {
  margin-bottom: 0;
}

.group-item h4 {
  margin: 0 0 10px;
  font-size: 16px;
}

.group-preview,
.group-full {
  display: grid;
  gap: 8px;
}

.group-row {
  display: grid;
  grid-template-columns: 70px 1fr 68px;
  gap: 10px;
  align-items: center;
  font-size: 14px;
}

.group-row span:first-child {
  color: var(--muted);
}

.mini-track {
  position: relative;
  height: 10px;
  border-radius: 999px;
  background: #ede4d7;
  overflow: hidden;
}

.mini-fill {
  position: absolute;
  inset: 0 auto 0 0;
  height: 100%;
  border-radius: inherit;
}

.mini-fill.baseline {
  background: linear-gradient(90deg, #cb5f2d, #e78a53);
}

.mini-fill.optimized {
  background: linear-gradient(90deg, #0f766e, #29a89d);
  opacity: 0.9;
}

.group-item details {
  margin-top: 10px;
}

.group-item details summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: 700;
  list-style: none;
}

.group-item details summary::-webkit-details-marker {
  display: none;
}

.table-shell {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  margin-bottom: 18px;
  background: #fffdf9;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.comparison-table th,
.comparison-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.comparison-table th {
  position: sticky;
  top: 0;
  background: #f7f1e8;
  z-index: 1;
}

.comparison-table tbody tr:nth-child(even) {
  background: rgba(244, 239, 231, 0.45);
}

.comparison-table tbody tr:hover {
  background: rgba(203, 95, 45, 0.08);
}

.origin-svg {
  width: 100%;
  height: 300px;
  display: block;
}

.axis-label,
.tick-label {
  fill: var(--muted);
  font-size: 12px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.grid-line {
  stroke: #e6ded1;
  stroke-width: 1;
}

.axis-line {
  stroke: #857866;
  stroke-width: 1.4;
}

.origin-line {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.origin-point {
  stroke: #fffdf8;
  stroke-width: 2;
  opacity: 0;
  animation: pointFade 0.5s ease forwards;
}

.origin-line.animate {
  stroke-dasharray: var(--path-length, 1000);
  stroke-dashoffset: var(--path-length, 1000);
  animation: drawLine 1.2s ease forwards;
}

.origin-tooltip {
  position: absolute;
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 14px));
  padding: 8px 10px;
  border-radius: 12px;
  background: rgba(29, 31, 30, 0.92);
  color: #fff;
  font-size: 12px;
  line-height: 1.5;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.18s ease;
  z-index: 3;
}

.origin-tooltip.visible {
  opacity: 1;
}

.origin-hover {
  fill: transparent;
  cursor: pointer;
}

@keyframes drawLine {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes pointFade {
  to {
    opacity: 1;
  }
}

.chart-card {
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fffdf9;
}

.chart-title {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
  margin-bottom: 12px;
}

.chart-title h4 {
  margin: 0;
  font-size: 18px;
}

.chart-title span {
  color: var(--muted);
}

.bar-group {
  display: grid;
  gap: 10px;
}

.bar-row {
  display: grid;
  grid-template-columns: 120px 1fr 72px;
  gap: 12px;
  align-items: center;
}

.bar-label {
  color: var(--muted);
  font-size: 14px;
}

.bar-track {
  position: relative;
  height: 14px;
  border-radius: 999px;
  background: #ede4d7;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: inherit;
}

.bar-fill.baseline {
  background: linear-gradient(90deg, #cb5f2d, #e78a53);
}

.bar-fill.optimized {
  background: linear-gradient(90deg, #0f766e, #29a89d);
}

.bar-value {
  text-align: right;
  font-weight: 700;
}

@media (max-width: 900px) {
  .hero,
  .section-grid,
  .architecture-flow,
  .section-head,
  .origin-grid {
    grid-template-columns: 1fr;
  }

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

  .section-head {
    display: block;
  }

  .origin-head {
    display: block;
  }

  .flow-arrow {
    transform: rotate(90deg);
    text-align: center;
  }
}