:root {
  color-scheme: light;
  --bg: #f3efe5;
  --bg-deep: #e4dccb;
  --panel: rgba(255, 252, 244, 0.82);
  --panel-border: rgba(36, 31, 20, 0.12);
  --text: #1f1a14;
  --muted: #625647;
  --accent: #0d6b5f;
  --accent-strong: #084f46;
  --accent-soft: #d6ede8;
  --shadow: 0 24px 60px rgba(65, 50, 24, 0.12);
  --surface: rgba(255, 255, 255, 0.62);
  --surface-border: rgba(31, 26, 20, 0.08);
  --button-secondary-bg: rgba(255, 255, 255, 0.6);
  --button-secondary-border: rgba(31, 26, 20, 0.12);
  --glow-left: rgba(13, 107, 95, 0.18);
  --glow-right: rgba(174, 108, 38, 0.16);
  --hero-glow: rgba(13, 107, 95, 0.22);
  --grid-line: rgba(31, 26, 20, 0.03);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1614;
  --bg-deep: #18211d;
  --panel: rgba(18, 27, 24, 0.82);
  --panel-border: rgba(188, 216, 204, 0.12);
  --text: #edf4ee;
  --muted: #a2b7ad;
  --accent: #6fcfbe;
  --accent-strong: #54b6a6;
  --accent-soft: #153732;
  --shadow: 0 28px 72px rgba(0, 0, 0, 0.42);
  --surface: rgba(10, 17, 15, 0.72);
  --surface-border: rgba(188, 216, 204, 0.1);
  --button-secondary-bg: rgba(255, 255, 255, 0.06);
  --button-secondary-border: rgba(188, 216, 204, 0.14);
  --glow-left: rgba(111, 207, 190, 0.18);
  --glow-right: rgba(199, 136, 82, 0.14);
  --hero-glow: rgba(111, 207, 190, 0.22);
  --grid-line: rgba(237, 244, 238, 0.05);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme]) {
    color-scheme: dark;
    --bg: #0f1614;
    --bg-deep: #18211d;
    --panel: rgba(18, 27, 24, 0.82);
    --panel-border: rgba(188, 216, 204, 0.12);
    --text: #edf4ee;
    --muted: #a2b7ad;
    --accent: #6fcfbe;
    --accent-strong: #54b6a6;
    --accent-soft: #153732;
    --shadow: 0 28px 72px rgba(0, 0, 0, 0.42);
    --surface: rgba(10, 17, 15, 0.72);
    --surface-border: rgba(188, 216, 204, 0.1);
    --button-secondary-bg: rgba(255, 255, 255, 0.06);
    --button-secondary-border: rgba(188, 216, 204, 0.14);
    --glow-left: rgba(111, 207, 190, 0.18);
    --glow-right: rgba(199, 136, 82, 0.14);
    --hero-glow: rgba(111, 207, 190, 0.22);
    --grid-line: rgba(237, 244, 238, 0.05);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, var(--glow-left), transparent 32%),
    radial-gradient(circle at top right, var(--glow-right), transparent 28%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  transition: color 160ms ease, background 160ms ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent 92%);
}

.page-shell {
  width: min(1180px, calc(100vw - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.hero,
.panel {
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
}

.hero {
  margin-top: 0.5rem;
  padding: 3.5rem;
  border-radius: 32px;
}

.hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 240px;
  height: 240px;
  border-radius: 999px;
  background: radial-gradient(circle, var(--hero-glow), transparent 68%);
}

.eyebrow,
.section-label,
.code-label {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
  font-weight: 700;
}

.eyebrow,
.section-label {
  color: var(--accent);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.02;
}

h1,
h2 {
  font-family: "Source Serif 4", Georgia, serif;
}

h1 {
  max-width: 11ch;
  margin-top: 0.75rem;
  font-size: clamp(3rem, 8vw, 5.7rem);
}

.hero-copy {
  max-width: 58rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.2rem;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  font: inherit;
  font-weight: 700;
  transition: transform 140ms ease, background-color 140ms ease, color 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #fff;
  background: var(--accent);
}

.button-primary:hover {
  background: var(--accent-strong);
}

.button-secondary {
  color: var(--text);
  border-color: var(--button-secondary-border);
  background: var(--button-secondary-bg);
}

.button-theme {
  min-width: 7.75rem;
}

.hero-note {
  margin-top: 1.4rem;
  color: var(--muted);
  font-size: 0.98rem;
}

main {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.panel {
  padding: 2rem;
  border-radius: 28px;
}

.panel-intro {
  display: grid;
  gap: 1.5rem;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

.section-heading h2,
.panel-intro h2,
.split-panel h2 {
  font-size: clamp(1.9rem, 3vw, 3rem);
}

.feature-grid,
.metrics-grid {
  display: grid;
  gap: 1rem;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metrics-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.metric-card,
.code-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 22px;
}

.feature-card,
.metric-card {
  padding: 1.15rem;
}

.metric-card-link {
  display: block;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

.feature-card h3,
.metric-card h3 {
  font-size: 1rem;
}

.feature-card p,
.metric-card p,
.simple-list,
.footnote {
  color: var(--muted);
}

.feature-card p,
.metric-card p {
  margin: 0.55rem 0 0;
  line-height: 1.55;
}

.metric-card-link:hover h3,
.metric-card-link:focus-visible h3 {
  color: var(--accent);
}

.metric-doc {
  scroll-margin-top: 1rem;
}

#metric-vpin {
  scroll-margin-top: 1rem;
}

.split-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.simple-list {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
  line-height: 1.8;
}

.code-stack {
  display: grid;
  gap: 1rem;
}

.response-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 1rem;
  align-items: start;
}

.response-intro {
  margin: 0 0 1rem;
  color: var(--muted);
  line-height: 1.7;
}

.response-fields {
  display: grid;
  gap: 0.85rem;
}

.response-field {
  padding: 1rem 1.05rem;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 18px;
}

.response-field h3 {
  font-size: 0.98rem;
}

.response-field p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.response-example {
  position: sticky;
  top: 1rem;
}

.metric-doc {
  padding: 1.35rem;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 24px;
}

.metric-doc-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.metric-doc-subtitle,
.metric-doc-copy,
.metric-doc-note {
  color: var(--muted);
}

.metric-doc-subtitle {
  margin: 0.4rem 0 0;
  line-height: 1.55;
}

.metric-doc-copy {
  margin: 1rem 0 0;
  line-height: 1.7;
}

.metric-doc-note {
  margin: 0.75rem 0 0;
  font-size: 0.96rem;
  line-height: 1.6;
}

.metric-doc-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) minmax(0, 1.15fr);
  gap: 1rem;
  margin-top: 1rem;
  align-items: start;
}

.code-card {
  overflow: hidden;
}

.code-label {
  padding: 0.85rem 1rem 0;
  color: var(--accent);
}

pre {
  margin: 0;
  padding: 0.35rem 1rem 1rem;
  overflow-x: auto;
}

code {
  font-family: "SFMono-Regular", "Consolas", monospace;
  font-size: 0.95rem;
}

.footnote {
  margin: 1rem 0 0;
  line-height: 1.7;
}

@media (max-width: 980px) {
  .feature-grid,
  .metrics-grid,
  .split-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .response-example {
    position: static;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100vw - 1rem, 100%);
    padding: 0.5rem 0 2rem;
  }

  .hero,
  .panel {
    border-radius: 24px;
  }

  .hero {
    padding: 2rem 1.25rem;
  }

  .panel {
    padding: 1.35rem;
  }

  .feature-grid,
  .metrics-grid,
  .split-panel {
    grid-template-columns: 1fr;
  }

  h1 {
    max-width: 100%;
  }
}