:root {
  color-scheme: dark;
  font-family:
    'IBM Plex Sans',
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  --bg: #0b1114;
  --bg-rgb: 11, 17, 20;
  --white: #ffffff;
  --white-rgb: 255, 255, 255;
  --black: #000000;
  --black-rgb: 0, 0, 0;
  --sky: #38bdf8;
  --sky-rgb: 56, 189, 248;
  --primary: #14b8a6;
  --primary-rgb: 20, 184, 166;
  --accent: #f20084;
  --accent-rgb: 242, 0, 132;
  --accent-soft: rgb(from var(--accent-rgb) r g b / 0.12);
  --accent-weak: rgb(from var(--accent-rgb) r g b / 0.06);
  --on-accent: #ffffff;
  --accent-700: #e6007d;
  --accent-700-rgb: 230, 0, 125;
  --accent-700-soft: rgb(from var(--accent-700-rgb) r g b / 0.12);
  --surface-strong: #0d1114;
  --surface-soft: #11151a;
  --surface-rgb: 17, 21, 26;
  --text: #e6eef2;
  --muted: #8aa3b0;
  --muted-rgb: 138, 163, 176;
  --panel: #0f1418;
  --code-bg-rgb: 15, 20, 24;
  --code-bg: #0f1418;
  --snippet-bg-rgb: 14, 19, 35;
  --snippet-bg: #0e1323;
  --status: #a7f3d0;
  --status-rgb: 167, 243, 208;
  --code-text: rgb(from var(--text) r g b / 0.92);
  --text-strong: #ffffff;
  --text-dim: rgb(from var(--text) r g b / 0.72);
  --muted-weak: rgb(from var(--muted-rgb) r g b / 0.68);
  --code-keyword: var(--primary);
  --code-string: var(--accent);
  --demo-map-start-rgb: 7, 16, 24;
  --demo-map-start: #071018;
  --card-grad-start-rgb: 7, 11, 18;
  --card-grad-end-rgb: 12, 19, 26;
  --card-grad-start: #070b12;
  --card-grad-end: #0c131a;
  --heart: #f20084;

  --surface: rgb(from var(--surface-soft) r g b / 0.92);
  --base: 16px;
  --h1: clamp(2.25rem, 5.5vw, 4.25rem);
  --h2: clamp(1.4rem, 3.2vw, 2.25rem);
  --border: rgb(from var(--muted) r g b / 0.18);
  --primary-soft: rgb(from var(--primary) r g b / 0.12);
  --shadow: 0 18px 50px rgb(from var(--black) r g b / 0.35);
  --radius: 28px;
  --scrollbar-track: rgb(from var(--white) r g b / 0.02);
  --scrollbar-thumb: var(--primary-soft);
  --scrollbar-thumb-hover: var(--primary);
  --image-gradient: linear-gradient(135deg, var(--primary-soft), transparent);
  --map-card-bg: linear-gradient(
    180deg,
    rgb(from var(--card-grad-start) r g b / 0.88),
    rgb(from var(--card-grad-end) r g b / 0.98)
  );
  --demo-map-bg: linear-gradient(
    160deg,
    rgb(from var(--demo-map-start) r g b / 0.96),
    rgb(from var(--surface-soft) r g b / 0.98)
  );
  --scrollbar-thumb-gradient: linear-gradient(
    180deg,
    rgb(from var(--primary) r g b / 0.85),
    rgb(from var(--sky) r g b / 0.7)
  );
}

body {
  background:
    radial-gradient(circle at top left, var(--primary-soft), transparent 35%),
    radial-gradient(circle at bottom right, rgb(from var(--sky) r g b / 0.06), transparent 28%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

* {
  box-sizing: border-box;
}

img,
svg {
  display: block;
}

.page-shell {
  min-height: 100vh;
}

.container {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgb(from var(--muted) r g b / 0.12);
  backdrop-filter: blur(18px);
  background: rgb(from var(--bg) r g b / 0.94);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 14px;
  background: rgb(from var(--primary) r g b / 0.16);
  color: var(--primary);
  font-family: 'JetBrains Mono', monospace;
}

.brand-mark-glyph {
  display: inline-flex;
  transform: rotate(45deg);
  font-size: 1.5rem;
  color: var(--accent);
}

.brand-name {
  text-decoration: none;
}

.menu-button {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgb(from var(--muted) r g b / 0.12);
  border-radius: 14px;
  background: rgb(from var(--surface-soft) r g b / 0.88);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.35rem;
}

.menu-bar {
  width: 1.2rem;
  height: 2px;
  background: var(--text);
  display: block;
  border-radius: 999px;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.primary-nav a,
.footer-links a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.primary-nav a:hover,
.footer-links a:hover {
  color: var(--text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease;
}

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

.btn-primary {
  background: var(--primary);
  color: var(--bg);
  box-shadow: 0 12px 40px rgb(from var(--black) r g b / 0.45);
}

.btn-secondary {
  border: 1px solid rgb(from var(--muted) r g b / 0.2);
  color: var(--text);
  background: rgb(from var(--white) r g b / 0.03);
}

/* Focus-visible for keyboard users */
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgb(from var(--primary) r g b / 0.14);
  border-radius: 999px;
}

.hero-section {
  position: relative;
  /* add a small buffer so the next section isn't partially visible */
  min-height: calc(var(--vh, 1vh) * 100 - 2 * var(--site-header-height, 0px) + 15px);
  padding: 2.5rem 0;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 2.5rem;
  align-items: center;
}

.hero-copy {
  max-width: 620px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.76rem;
}

h1,
h2,
h3 {
  color: var(--text-strong);
}

h1 {
  font-size: var(--h1);
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin: 0;
}

/* Brand-highlight used in hero H1 to emphasize product name */
.hero-copy h1 .brand-highlight {
  color: var(--accent);
}

h2 {
  font-size: var(--h2);
  margin: 0 0 0.75rem 0;
  line-height: 1.05;
  font-weight: 700;
  /* background: var(--demo-map-bg); */
}

.hero-text {
  margin: 1.5rem 0 2rem;
  color: var(--muted);
  max-width: 42rem;
  line-height: 1.8;
}

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

.hero-badges {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin-top: 2.25rem;
}

.hero-badges div {
  padding: 1rem 1.15rem;
  border-radius: 20px;
  background: rgb(from var(--white) r g b / 0.03);
  border: 1px solid rgb(from var(--muted) r g b / 0.08);
  color: var(--muted);
  font-size: 0.95rem;
}

.hero-badges strong {
  color: var(--text);
}

.hero-visual {
  position: relative;
}

.control-visual {
  position: relative;
}

.map-card {
  border-radius: 32px;
  background: var(--map-card-bg);
  border: 1px solid rgb(from var(--muted) r g b / 0.16);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  overflow: hidden;
}

.control-card {
  width: fit-content;
  border-radius: 32px;
  background: var(--map-card-bg);
  border: 1px solid rgb(from var(--muted) r g b / 0.16);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  overflow: hidden;
  float: right;
}

/* Interactive lift for map/control cards */
.map-card,
.control-card {
  transition:
    transform 0.28s ease,
    box-shadow 0.28s ease;
}

.map-card:hover,
.map-card:focus-within,
.control-card:hover,
.control-card:focus-within {
  transform: translateY(-8px);
  box-shadow:
    0 36px 80px rgb(from var(--black) r g b / 0.55),
    0 0 0 6px rgb(from var(--primary) r g b / 0.06);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  background: rgb(from var(--primary) r g b / 0.08);
  color: var(--primary);
  font-size: 0.82rem;
  width: fit-content;
  margin-bottom: 1rem;
}

.chip-dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 999px;
  background: var(--primary);
}

.map-preview-1,
.map-preview-2 {
  height: 420px;
  border-radius: 28px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.map-preview-1 {
  background-image: url('./route.webp');
}

.map-preview-2 {
  background-image: url('./isoline.webp');
}

.control-preview {
  height: 437px;
  width: 290px;
  border-radius: 28px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
  background-image: url('./control.webp');
}

.map-preview::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 80% 15%,
    rgb(from var(--white) r g b / 0.12),
    transparent 24%
  );
}

.map-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  gap: 1rem;
}

.map-label {
  text-transform: uppercase;
  letter-spacing: 0.17em;
  color: var(--muted);
  font-size: 0.75rem;
}

.map-value {
  margin-top: 0.25rem;
  font-size: 1rem;
  font-weight: 700;
}

.map-tags {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.map-tags span {
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  background: rgb(from var(--white) r g b / 0.04);
  color: var(--muted);
  font-size: 0.82rem;
}

.section-panel,
.section-grid,
.section-split {
  padding: 4rem 0;
}

.section-alt {
  background: rgb(from var(--white) r g b / 0.02);
  border-top: 1px solid rgb(from var(--muted) r g b / 0.08);
}

.section-muted {
  background: rgb(from var(--surface-soft) r g b / 0.8);
}

.section-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
}

.icon-badge {
  width: 3rem;
  height: 3rem;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: rgb(from var(--primary) r g b / 0.1);
  color: var(--accent);
}

.section-grid {
  display: grid;
  gap: 2.5rem;
  place-items: center;
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.95fr);
  gap: 2rem;
  align-items: center;
}

.demo-window {
  border-radius: 32px;
  overflow: hidden;
  background: rgb(from var(--surface-soft) r g b / 0.96);
  border: 1px solid rgb(from var(--muted) r g b / 0.16);
  box-shadow: var(--shadow);
}

.demo-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: rgb(from var(--black) r g b / 0.15);
  color: var(--text);
  font-size: 0.95rem;
}

.status-pill {
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: rgb(from var(--status) r g b / 0.15);
  color: var(--status);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
}

.demo-map {
  min-height: 310px;
  position: relative;
  background: var(--demo-map-bg);
}

.demo-map-overlay {
  position: absolute;
  inset: 1.2rem;
  border-radius: 26px;
  background:
    radial-gradient(circle at top left, rgb(from var(--sky) r g b / 0.15), transparent 32%),
    linear-gradient(
      135deg,
      rgb(from var(--sky) r g b / 0.12),
      rgb(from var(--snippet-bg) r g b / 0.85)
    );
  box-shadow: inset 0 0 0 1px rgb(from var(--white) r g b / 0.03);
  display: grid;
  place-items: center;
  color: rgb(from var(--muted) r g b / 0.95);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.demo-footer {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 1.25rem 1.25rem;
  background: rgb(from var(--white) r g b / 0.03);
  border-top: 1px solid rgb(from var(--muted) r g b / 0.08);
  color: rgb(from var(--muted) r g b / 0.95);
  font-size: 0.95rem;
  line-height: 1.5;
}

.demo-footer strong {
  color: var(--text);
}

.checklist {
  display: grid;
  gap: 0.85rem;
  padding-left: 1rem;
  color: var(--muted);
}

.checklist li {
  position: relative;
  list-style: none;
  padding-left: 1.65rem;
}

.checklist li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.icon-badge i,
.feature-icon i,
.usecase-icon i,
.accuracy-icon i {
  width: 1.4rem;
  height: 1.4rem;
}

.panel-visual {
  min-height: 100%;
}

@media (max-width: 1024px) {
  .section-grid,
  .split-grid {
    grid-template-columns: 1fr;
  }
}

.feature-grid,
.usecase-grid,
.snippet-card-grid,
.metric-grid,
.api-list {
  display: grid;
  gap: 1.5rem;
}

.feature-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.feature-card,
.snippet-card,
.metric-card,
.api-card,
.usecase-card,
.accuracy-card {
  padding: 1.75rem;
  border-radius: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: inset 0 0 0 1px rgb(from var(--white) r g b / 0.01);
}

.feature-icon,
.usecase-icon,
.accuracy-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 16px;
  margin-bottom: 1rem;
  background: rgb(from var(--primary) r g b / 0.1);
  color: var(--accent);
}

.feature-card h3,
.snippet-card h3,
.metric-card p,
.api-card span,
.usecase-card p {
  margin: 0;
}

.feature-card h3,
.snippet-card h3 {
  margin-bottom: 0.75rem;
  color: var(--text);
}

.code-block {
  border-radius: 30px;
  background: rgb(from var(--code-bg) r g b / 0.94);
  border: 1px solid rgb(from var(--muted) r g b / 0.12);
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.code-title {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgb(from var(--muted) r g b / 0.08);
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.code-block pre {
  margin: 0;
  padding: 1.75rem 1.5rem;
  overflow-x: auto;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.96rem;
  line-height: 1.7;
  color: var(--code-text);
}

.token.keyword {
  color: var(--code-keyword);
}

.token.string {
  color: var(--code-string);
}

.token.function {
  color: var(--text);
}

.token.punctuation {
  color: var(--muted);
}

.snippet-card-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.snippet-card {
  background: rgb(from var(--surface-soft) r g b / 0.95);
}

.snippet-card pre {
  margin: 0;
  padding: 1rem;
  border-radius: 20px;
  background: rgb(from var(--snippet-bg) r g b / 0.88);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.metric-card {
  text-align: center;
}

.metric-label {
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.metric-value {
  margin-top: 0.75rem;
  font-size: 2rem;
  font-weight: 700;
}

.api-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
}

.api-list {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.api-card {
  padding: 1rem 1.1rem;
  border-radius: 24px;
  background: rgb(from var(--white) r g b / 0.03);
  color: var(--text);
  font-weight: 600;
}

.accuracy-card {
  display: grid;
  gap: 1rem;
  min-height: 220px;
  place-content: center;
}

.accuracy-copy {
  color: var(--muted);
  line-height: 1.75;
}

.usecase-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.usecase-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: rgb(from var(--white) r g b / 0.03);
}

.usecase-icon {
  min-width: 3rem;
}

.usecase-card p {
  color: var(--muted);
  line-height: 1.7;
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.faq-item {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.25rem;
  border-radius: 22px;
  border: 1px solid rgb(from var(--muted) r g b / 0.12);
  background: rgb(from var(--surface-soft) r g b / 0.96);
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
}

.faq-panel {
  padding: 1rem 1.25rem;
  background: rgb(from var(--code-bg) r g b / 0.96);
  border-radius: 20px;
  color: var(--muted);
  display: none;
  line-height: 1.75;
}

.faq-item.active + .faq-panel {
  display: block;
}

.faq-toggle {
  display: inline-flex;
  width: 1.8rem;
  height: 1.8rem;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--accent);
}

.site-footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid rgb(from var(--muted) r g b / 0.12);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer-brand {
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-copy {
  margin-top: 0.65rem;
  max-width: 32rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

@media (max-width: 1024px) {
  .hero-grid,
  .split-grid {
    grid-template-columns: 1fr;
  }

  .hero-badges,
  .snippet-card-grid,
  .feature-grid,
  .api-list,
  .metric-grid,
  .usecase-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .site-header .container {
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .menu-button {
    display: inline-flex;
  }

  .primary-nav {
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(100% + 0.75rem);
    bottom: auto;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem;
    background: rgb(from var(--bg) r g b / 0.98);
    border-radius: 24px;
    border: 1px solid rgb(from var(--muted) r g b / 0.14);
    display: none;
    width: auto;
    z-index: 60;
  }

  .primary-nav.open {
    display: flex;
  }

  .nav-actions {
    width: 100%;
    justify-content: stretch;
    flex-wrap: wrap;
    padding: 1rem;
    gap: 0.75rem;
    background: rgb(from var(--bg) r g b / 0.98);
    border-radius: 24px;
    border: 1px solid rgb(from var(--muted) r g b / 0.14);
    margin-top: 0.75rem;
    display: grid;
  }

  .nav-actions .btn {
    width: 100%;
  }
}

.as-hot {
  color: var(--heart);
}

a {
  color: var(--text);
  text-decoration: none;
}

/* Scroll animations: reveal + hero parallax (small, accessible) */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 0.6s cubic-bezier(0.2, 0.9, 0.2, 1),
    transform 0.6s cubic-bezier(0.2, 0.9, 0.2, 1);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-visual {
  will-change: transform;
  transition: transform 0.25s linear;
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .hero-visual {
    transition: none !important;
    transform: none !important;
  }
}

/* Accessible utility to hide text visually but keep it for screen readers */
.skip-link {
  position: absolute;
  left: 1rem;
  top: calc(var(--site-header-height, 0px) + 0.5rem);
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  background: rgb(from var(--bg) r g b / 0.92);
  color: var(--accent);
  transform: translateY(-8px);
  opacity: 0;
  transition:
    opacity 0.18s ease,
    transform 0.18s ease;
  z-index: 9999;
}

.skip-link:focus {
  opacity: 1;
  transform: translateY(0);
  outline: none;
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Scroll hint: appears after brief inactivity to indicate more content below */
.scroll-hint {
  position: fixed;
  left: 50%;
  bottom: calc(18px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: rgb(from var(--white) r g b / 0.03);
  border: 1px solid rgb(from var(--muted) r g b / 0.06);
  color: var(--text);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
  z-index: 60;
}

.scroll-hint.visible {
  opacity: 1;
  pointer-events: auto;
  animation: scroll-hint-float 2s ease-in-out infinite;
}

.scroll-hint .scroll-hint-icon {
  width: 18px;
  height: 18px;
  color: var(--muted);
}

@keyframes scroll-hint-float {
  0% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(-8px);
  }

  100% {
    transform: translateX(-50%) translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-hint {
    animation: none !important;
  }
}

/* Firefox */
* {
  scrollbar-width: thin;
  /* auto | thin | none */
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* WebKit (Chrome, Edge, Safari) */
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

*::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
  border-radius: 999px;
}

*::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

*::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

/* Keep code block scrollbars visually consistent */
.code-block pre::-webkit-scrollbar {
  height: 8px;
}

.code-block pre::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb-gradient);
}

/* Fallbacks for browsers that do not yet support `rgb(from ...)` */
@supports not (color: rgb(from var(--card-grad-start) r g b / 0.88)) {
  :root {
    --surface: rgba(var(--surface-rgb), 0.92);
    --border: rgba(var(--muted-rgb), 0.18);
    --primary-soft: rgba(var(--primary-rgb), 0.12);
    --shadow: 0 18px 50px rgba(var(--black-rgb), 0.35);
    --scrollbar-track: rgba(var(--white-rgb), 0.02);
    --map-card-bg: linear-gradient(
      180deg,
      rgba(var(--card-grad-start-rgb), 0.88),
      rgba(var(--card-grad-end-rgb), 0.98)
    );
    --demo-map-bg: linear-gradient(
      160deg,
      rgba(var(--demo-map-start-rgb), 0.96),
      rgba(var(--surface-rgb), 0.98)
    );
    --scrollbar-thumb-gradient: linear-gradient(
      180deg,
      rgba(var(--primary-rgb), 0.85),
      rgba(var(--sky-rgb), 0.7)
    );
  }

  body {
    background:
      radial-gradient(circle at top left, var(--primary-soft), transparent 35%),
      radial-gradient(circle at bottom right, rgba(var(--sky-rgb), 0.06), transparent 28%),
      var(--bg);
  }

  .site-header {
    border-bottom: 1px solid rgba(var(--muted-rgb), 0.12);
    background: rgba(var(--bg-rgb), 0.94);
  }

  .brand-mark {
    background: rgba(var(--primary-rgb), 0.16);
  }

  .menu-button {
    border: 1px solid rgba(var(--muted-rgb), 0.12);
    background: rgba(var(--surface-rgb), 0.88);
  }

  .btn-primary {
    box-shadow: 0 12px 40px rgba(var(--black-rgb), 0.45);
  }

  .btn-secondary {
    border: 1px solid rgba(var(--muted-rgb), 0.2);
    background: rgba(var(--white-rgb), 0.03);
  }

  .btn:focus-visible {
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.14);
  }

  .hero-badges div {
    background: rgba(var(--white-rgb), 0.03);
    border: 1px solid rgba(var(--muted-rgb), 0.08);
  }

  .map-card,
  .control-card {
    border: 1px solid rgba(var(--muted-rgb), 0.16);
    /* keep original shadow variable which was converted above */
    box-shadow: var(--shadow);
  }

  .map-card:hover,
  .map-card:focus-within,
  .control-card:hover,
  .control-card:focus-within {
    transform: translateY(-8px);
    box-shadow:
      0 36px 80px rgba(var(--black-rgb), 0.55),
      0 0 0 6px rgba(var(--primary-rgb), 0.06);
  }

  .chip {
    background: rgba(var(--primary-rgb), 0.08);
  }

  .map-preview::after {
    background: radial-gradient(circle at 80% 15%, rgba(var(--white-rgb), 0.12), transparent 24%);
  }

  .map-tags span {
    background: rgba(var(--white-rgb), 0.04);
  }

  .section-alt {
    background: rgba(var(--white-rgb), 0.02);
    border-top: 1px solid rgba(var(--muted-rgb), 0.08);
  }

  .section-muted {
    background: rgba(var(--surface-rgb), 0.8);
  }

  .icon-badge {
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--accent);
  }

  .demo-window {
    background: rgba(var(--surface-rgb), 0.96);
    border: 1px solid rgba(var(--muted-rgb), 0.16);
    box-shadow: var(--shadow);
  }

  .demo-toolbar {
    background: rgba(var(--black-rgb), 0.15);
  }

  .status-pill {
    background: rgba(var(--status-rgb), 0.15);
    color: var(--status);
  }

  .demo-map-overlay {
    background:
      radial-gradient(circle at top left, rgba(var(--sky-rgb), 0.15), transparent 32%),
      linear-gradient(135deg, rgba(var(--sky-rgb), 0.12), rgba(var(--snippet-bg-rgb), 0.85));
    box-shadow: inset 0 0 0 1px rgba(var(--white-rgb), 0.03);
    color: rgba(var(--muted-rgb), 0.95);
  }

  .demo-footer {
    background: rgba(var(--white-rgb), 0.03);
    border-top: 1px solid rgba(var(--muted-rgb), 0.08);
    color: rgba(var(--muted-rgb), 0.95);
  }

  .feature-card,
  .snippet-card,
  .metric-card,
  .api-card,
  .usecase-card,
  .accuracy-card {
    box-shadow: inset 0 0 0 1px rgba(var(--white-rgb), 0.01);
  }

  .feature-icon,
  .usecase-icon,
  .accuracy-icon {
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--accent);
  }

  .code-block {
    background: rgba(var(--code-bg-rgb), 0.94);
    border: 1px solid rgba(var(--muted-rgb), 0.12);
  }

  .code-title {
    border-bottom: 1px solid rgba(var(--muted-rgb), 0.08);
  }

  .snippet-card {
    background: rgba(var(--surface-rgb), 0.95);
  }

  .snippet-card pre {
    background: rgba(var(--snippet-bg-rgb), 0.88);
  }

  .api-card,
  .usecase-card {
    background: rgba(var(--white-rgb), 0.03);
  }

  .faq-item {
    border: 1px solid rgba(var(--muted-rgb), 0.12);
    background: rgba(var(--surface-rgb), 0.96);
  }

  .faq-panel {
    background: rgba(var(--code-bg-rgb), 0.96);
  }

  .site-footer {
    border-top: 1px solid rgba(var(--muted-rgb), 0.12);
  }

  .primary-nav,
  .nav-actions {
    background: rgba(var(--bg-rgb), 0.98);
    border: 1px solid rgba(var(--muted-rgb), 0.14);
  }

  .skip-link {
    background: rgba(var(--bg-rgb), 0.92);
    box-shadow: 0 0 0 4px var(--accent-soft);
  }

  .scroll-hint {
    background: rgba(var(--white-rgb), 0.03);
    border: 1px solid rgba(var(--muted-rgb), 0.06);
  }
}