:root {
  --bg: #08111f;
  --bg-soft: #0f1d33;
  --panel: rgba(14, 25, 44, 0.88);
  --panel-strong: #132643;
  --border: rgba(154, 180, 214, 0.18);
  --text: #edf4ff;
  --muted: #b5c4db;
  --blue: #72b7ff;
  --teal: #57d9c4;
  --purple: #b494ff;
  --yellow: #ffd875;
  --red: #ff8e8e;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
  --radius: 20px;
  --radius-sm: 14px;
  --page: min(1160px, calc(100vw - 32px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(114, 183, 255, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(87, 217, 196, 0.12), transparent 24%),
    linear-gradient(180deg, #07101c 0%, #091423 38%, #07101a 100%);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; }
code {
  font-family: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.14rem 0.36rem;
  border-radius: 8px;
  color: #d8ebff;
}

.page-shell {
  width: var(--page);
  margin: 0 auto;
}

.hero {
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.topbar {
  width: var(--page);
  margin: 0 auto;
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.hero-content {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.8fr);
  gap: 2rem;
  padding: 2rem 0 1rem;
}

.eyebrow,
.section-kicker {
  margin: 0 0 0.75rem;
  color: var(--teal);
  font-size: 0.86rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1, h2, h3 {
  line-height: 1.15;
  margin: 0;
}

h1 {
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  max-width: 12ch;
}

.hero-copy,
.section-heading p,
.info-card p,
.tiny-note,
.inline-note,
.stat-card p,
.timeline-steps span,
.preview-meta,
.footer p {
  color: var(--muted);
}

.hero-copy {
  font-size: 1.05rem;
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.4rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.88rem 1.25rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  text-decoration: none;
  font-weight: 600;
}

.button.primary {
  background: linear-gradient(135deg, var(--blue), #88d8ff);
  color: #07101c;
  border-color: transparent;
}

.button.secondary { background: rgba(255,255,255,0.03); }

.hero-panel,
.info-card,
.stat-card,
.detail-card,
.callout {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 1.25rem;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.pill,
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.08);
  font-size: 0.84rem;
}

.badge.warning,
.stat-card.warning strong { color: var(--yellow); }

.meta-list {
  display: grid;
  gap: 0.75rem;
  margin: 1rem 0;
}

.meta-list div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.meta-list dt,
.meta-list dd {
  margin: 0;
}

.meta-list dt { color: var(--muted); }
.meta-list.compact div { font-size: 0.95rem; }

.link-stack {
  display: grid;
  gap: 0.5rem;
}
.link-stack a { color: var(--blue); }
.tiny-note { font-size: 0.9rem; margin-top: 1rem; }

.section {
  padding: 4.2rem 0 0;
}

.highlighted {
  position: relative;
}

.highlighted::before {
  content: "";
  position: absolute;
  inset: 1rem -1rem -1rem;
  background: linear-gradient(180deg, rgba(114,183,255,0.08), rgba(180,148,255,0.04));
  border-radius: 28px;
  z-index: -1;
}

.section-heading {
  max-width: 72ch;
  margin-bottom: 1.5rem;
}

.card-grid {
  display: grid;
  gap: 1rem;
}
.two-up { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.three-up { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.info-card,
.stat-card,
.detail-card,
.callout {
  padding: 1.15rem 1.2rem;
}

.info-card h3,
.stat-card strong,
.detail-card summary { margin-bottom: 0.45rem; }

.accent-blue { box-shadow: inset 0 1px 0 rgba(114,183,255,0.26), var(--shadow); }
.accent-teal { box-shadow: inset 0 1px 0 rgba(87,217,196,0.26), var(--shadow); }
.accent-purple { box-shadow: inset 0 1px 0 rgba(180,148,255,0.26), var(--shadow); }

.tag-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag-list li {
  padding: 0.36rem 0.65rem;
  background: rgba(255,255,255,0.06);
  border-radius: 999px;
  font-size: 0.86rem;
  color: #dbe7ff;
}

.stats-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
}

.inline-note {
  margin: 0.9rem 0 0;
  font-size: 0.94rem;
}

.stat-card strong {
  font-size: 1.6rem;
  display: block;
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 0.45rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.id-rail {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.id-rail div,
.join-card {
  padding: 1rem 1.1rem;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
}

.id-rail span {
  display: block;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.id-rail strong { font-size: 1.12rem; }

.table-preview {
  overflow-x: auto;
  margin-top: 0.9rem;
  border-radius: 14px;
  border: 1px solid var(--border);
}

.table-preview table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
  background: rgba(0,0,0,0.12);
}

.table-preview th,
.table-preview td {
  text-align: left;
  padding: 0.72rem 0.8rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  vertical-align: top;
}

.table-preview th {
  position: sticky;
  top: 0;
  background: #10233d;
  font-size: 0.9rem;
}

.table-preview td {
  font-size: 0.92rem;
  color: #e6eefc;
}

.journey-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.65fr) minmax(0, 1.35fr);
  gap: 1rem;
}

.timeline-shell {
  margin-top: 1rem;
}

.admission-timeline {
  display: grid;
  gap: 1rem;
}

.timeline-card {
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  position: relative;
}

.timeline-card.active {
  border-color: rgba(114,183,255,0.45);
  box-shadow: inset 0 0 0 1px rgba(114,183,255,0.15);
}

.timeline-card .label {
  display: inline-flex;
  margin-bottom: 0.55rem;
  color: var(--blue);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.timeline-card .timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
  color: var(--muted);
  font-size: 0.93rem;
  margin-top: 0.55rem;
}

.timeline-card.active::after {
  content: "主线 ICU 旅程";
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.78rem;
  color: #061120;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--blue), var(--teal));
}

.timeline-steps {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.8rem;
}

.timeline-steps li {
  display: grid;
  gap: 0.2rem;
  padding-left: 1rem;
  border-left: 2px solid rgba(114,183,255,0.35);
}

.callout {
  margin-top: 1rem;
}

.callout.caution {
  border-color: rgba(255, 216, 117, 0.3);
  background: rgba(255, 216, 117, 0.06);
}

.callout.subtle {
  background: rgba(87, 217, 196, 0.05);
}

.tab-bar {
  display: inline-flex;
  gap: 0.4rem;
  padding: 0.35rem;
  margin-bottom: 1rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
}

.tab-button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 0.62rem 1rem;
  border-radius: 999px;
  font: inherit;
  cursor: pointer;
}

.tab-button.is-active {
  color: #07101c;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  font-weight: 700;
}

.event-panel { display: none; }
.event-panel.is-active { display: block; }
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 1rem;
  margin-bottom: 0.7rem;
}

.preview-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  font-size: 0.92rem;
  margin-bottom: 0.8rem;
}

.comparison-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.code-block {
  margin: 0.9rem 0 0;
  padding: 1rem;
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  color: #dff6ff;
}

.code-block code {
  background: transparent;
  padding: 0;
  color: inherit;
}

.sql-workbench {
  display: grid;
  grid-template-columns: minmax(240px, 0.62fr) minmax(0, 1.38fr);
  gap: 1rem;
  margin-top: 1rem;
}

.sql-example-list {
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.sql-example-button,
.sql-example-detail {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.sql-example-button {
  appearance: none;
  text-align: left;
  padding: 1rem 1.05rem;
  color: var(--text);
  cursor: pointer;
  font: inherit;
}

.sql-example-button strong,
.sql-example-button span {
  display: block;
}

.sql-example-button span {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.93rem;
}

.sql-example-button.is-active {
  border-color: rgba(114, 183, 255, 0.42);
  box-shadow: inset 0 0 0 1px rgba(114, 183, 255, 0.12), var(--shadow);
  background: linear-gradient(180deg, rgba(114, 183, 255, 0.12), rgba(255,255,255,0.03));
}

.sql-example-detail {
  padding: 1.2rem;
}

.sql-example-detail .eyebrow-inline {
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.82rem;
}

.sql-example-detail h3 {
  margin-top: 0.25rem;
}

.sql-example-detail .sql-summary,
.sql-example-detail .sql-takeaway {
  color: var(--muted);
}

.sql-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin: 0.9rem 0 0.2rem;
  color: var(--muted);
  font-size: 0.93rem;
}

.sql-result-title {
  margin: 1.1rem 0 0.5rem;
  font-size: 0.98rem;
}

.command-grid {
  display: grid;
  gap: 0.85rem;
  margin-top: 1rem;
}

.command-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.03);
  overflow: hidden;
}

.command-card header {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.command-card pre {
  margin: 0;
  padding: 1rem;
  overflow-x: auto;
  white-space: pre-wrap;
  color: #dff6ff;
}

.command-card p {
  margin: 0;
  padding: 0 1rem 1rem;
  color: var(--muted);
}

.full-width { width: 100%; }

.detail-card summary {
  cursor: pointer;
  font-weight: 700;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 3rem 0 2rem;
  align-items: center;
}

@media (max-width: 1100px) {
  .stats-grid,
  .three-up {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .hero-content,
  .journey-grid,
  .two-up,
  .comparison-grid,
  .id-rail,
  .sql-workbench {
    grid-template-columns: 1fr;
  }

  .topbar,
  .footer {
    flex-direction: column;
    align-items: start;
  }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .stats-grid,
  .three-up { grid-template-columns: 1fr; }
  .hero-content { padding-top: 1rem; }
  h1 { max-width: none; }
}