:root {
  color-scheme: light;
  --ink: #fbf7f0;
  --ink-soft: #f4ede4;
  --foam: #1f2d28;
  --mist: #5e6f68;
  --acid: #7dcaa3;
  --acid-deep: #4aa773;
  --amber: #c89a48;
  --line: rgba(73, 92, 84, 0.14);
  --shadow: rgba(80, 96, 90, 0.14);
  --surface: rgba(255, 255, 255, 0.68);
  --surface-strong: rgba(255, 255, 255, 0.9);
  --surface-soft: rgba(255, 255, 255, 0.56);
  --panel: linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(243, 235, 225, 0.94));
  --code-bg: #f4ece3;
  --hero-glow: rgba(125, 202, 163, 0.24);
  --hero-glow-warm: rgba(200, 154, 72, 0.16);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Manrope", "Segoe UI", sans-serif;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --ink: #0e1a17;
  --ink-soft: #1a2e28;
  --foam: #e8f2ec;
  --mist: #b7cfc4;
  --acid: #6fd9a2;
  --acid-deep: #2f9e6a;
  --amber: #e2b15a;
  --line: rgba(232, 242, 236, 0.12);
  --shadow: rgba(4, 12, 10, 0.55);
  --surface: rgba(14, 26, 23, 0.72);
  --surface-strong: rgba(17, 33, 28, 0.92);
  --surface-soft: rgba(232, 242, 236, 0.06);
  --panel: linear-gradient(160deg, rgba(26, 46, 40, 0.92), rgba(14, 26, 23, 0.96));
  --code-bg: #07110e;
  --hero-glow: rgba(111, 217, 162, 0.2);
  --hero-glow-warm: rgba(226, 177, 90, 0.12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--foam);
  font-family: var(--font-body);
  background: var(--ink);
  line-height: 1.55;
  overflow-x: hidden;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 500px at 12% -10%, var(--hero-glow), transparent 60%),
    radial-gradient(700px 480px at 88% 8%, var(--hero-glow-warm), transparent 55%),
    radial-gradient(1000px 700px at 50% 110%, rgba(125, 202, 163, 0.12), transparent 60%),
    linear-gradient(165deg, var(--ink) 0%, var(--ink-soft) 42%, var(--ink) 100%);
}

.atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(31, 45, 40, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 45, 40, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
  opacity: 0.45;
}

a {
  color: inherit;
  text-decoration: none;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem clamp(1.25rem, 4vw, 3rem);
  max-width: 1120px;
  margin: 0 auto;
}

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

.mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.top-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.92rem;
  color: var(--mist);
}

.top-nav a:hover {
  color: var(--foam);
}

.theme-toggle {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--foam);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  font: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  border-color: rgba(125, 202, 163, 0.45);
}

.hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(2rem, 6vh, 4rem) clamp(1.25rem, 4vw, 3rem) 3rem;
  min-height: calc(100vh - 5rem);
  display: grid;
  align-content: start;
  gap: 1rem;
}

.hero-banner {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 24px 60px var(--shadow);
}

.hero-banner img {
  display: block;
  width: 100%;
  height: auto;
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--foam);
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) 0.05s forwards;
}

.hero h1 {
  margin: 0.35rem 0 0;
  max-width: 16ch;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.6vw, 2.35rem);
  font-weight: 500;
  line-height: 1.2;
  color: var(--mist);
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) 0.18s forwards;
}

.lede {
  margin: 0.75rem 0 0;
  max-width: 38rem;
  font-size: 1.05rem;
  color: var(--mist);
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) 0.3s forwards;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) 0.42s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn.primary {
  background: linear-gradient(135deg, var(--acid), var(--acid-deep));
  color: #04140f;
  box-shadow: 0 12px 30px rgba(74, 167, 115, 0.16);
}

.btn.ghost {
  border-color: var(--line);
  background: var(--surface-soft);
  color: var(--foam);
}

.btn.ghost:hover {
  border-color: rgba(111, 217, 162, 0.45);
}

.btn.small {
  padding: 0.65rem 1rem;
  font-size: 0.88rem;
}

.hero-stage {
  margin-top: clamp(1.5rem, 4vh, 2.75rem);
  opacity: 0;
  transform: translateY(28px) scale(0.985);
  animation: stage-in 1.1s cubic-bezier(0.2, 0.8, 0.2, 1) 0.55s forwards;
}

.model-shell {
  position: relative;
  min-height: 360px;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: 0 30px 80px var(--shadow);
}

model-viewer {
  width: 100%;
  min-height: 360px;
  background: radial-gradient(circle at 30% 30%, var(--hero-glow), transparent 55%),
    radial-gradient(circle at 80% 60%, var(--hero-glow-warm), transparent 62%);
}

.model-caption {
  margin: 0;
  padding: 0.75rem 0.95rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--mist);
}

.band {
  max-width: 800px;
  margin: 0 auto;
  padding: 4rem clamp(1.25rem, 4vw, 3rem) 1.5rem;
}

.story-grid {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem clamp(1.25rem, 4vw, 3rem) 3rem;
  display: grid;
  gap: 1.25rem;
}

.band h2,
.split h3,
.start-block h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.band h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
}

.band-lede {
  margin: 1rem 0 0;
  color: var(--mist);
  font-size: 1.05rem;
}

.split {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem clamp(1.25rem, 4vw, 3rem) 3rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem 2rem;
}

.split article {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.split h3 {
  margin: 0 0 0.45rem;
  font-size: 1.2rem;
}

.split p {
  margin: 0;
  color: var(--mist);
}

.story-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.95fr);
  gap: 1.25rem;
  align-items: center;
}

.story-row.reverse .story-copy {
  order: 2;
}

.story-row.reverse .story-media {
  order: 1;
}

.story-copy {
  padding: 1.5rem 0;
}

.eyebrow {
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--acid-deep);
}

.story-copy h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.15;
}

.story-copy p {
  margin: 0 0 0.75rem;
  color: var(--mist);
}

.story-media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 24px 60px var(--shadow);
}

.story-media img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.start-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.fleet-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 1.25rem;
  margin-top: 1.75rem;
  align-items: start;
}

.fleet-visual {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 24px 60px var(--shadow);
}

.fleet-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.fleet-copy {
  display: grid;
  gap: 1rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.metric {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.metric h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.06rem;
}

.metric p {
  margin: 0.6rem 0 0;
  color: var(--mist);
  font-size: 0.92rem;
}

.start-block {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}

.start-block h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.start-block p {
  margin: 0 0 1rem;
  color: var(--mist);
  font-size: 0.95rem;
}

.start-block pre {
  margin: 0 0 0.85rem;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  border-radius: 12px;
  background: var(--code-bg);
  border: 1px solid var(--line);
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--acid);
}

.hint {
  margin: 0 !important;
  font-size: 0.82rem !important;
  color: var(--mist) !important;
}

.docs {
  padding-bottom: 3rem;
}

.foot {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem clamp(1.25rem, 4vw, 3rem) 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--mist);
  font-size: 0.88rem;
}

.foot span {
  font-family: var(--font-display);
  color: var(--foam);
  margin-right: auto;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes stage-in {
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 800px) {
  .top {
    align-items: flex-start;
  }

  .top-actions {
    flex-direction: column;
    align-items: flex-end;
  }

  .top-nav {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.85rem;
    font-size: 0.85rem;
  }

  .split,
  .start-grid,
  .metrics-grid,
  .story-row {
    grid-template-columns: 1fr;
  }

  .story-row.reverse .story-copy,
  .story-row.reverse .story-media {
    order: initial;
  }

  .hero {
    min-height: auto;
  }
}