:root {
  color-scheme: dark;
  --bg: #0c0e12;
  --panel: #151821;
  --panel-2: #1d222d;
  --text: #f4f6f8;
  --muted: #9ba3af;
  --line: #2a303c;
  --accent: #72e2d1;
  --accent-2: #8db7ff;
  --danger: #ff786b;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 12%, rgba(114, 226, 209, 0.16), transparent 28rem),
    radial-gradient(circle at 85% 5%, rgba(141, 183, 255, 0.13), transparent 24rem),
    var(--bg);
  color: var(--text);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem clamp(1.25rem, 4vw, 4rem);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(12, 14, 18, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 760;
}

.brand img {
  width: 2rem;
  height: 2rem;
  border-radius: 0.5rem;
}

nav {
  display: flex;
  gap: 1.35rem;
  color: var(--muted);
  font-size: 0.92rem;
}

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

main {
  width: min(1180px, calc(100% - 2.5rem));
  margin: 0 auto;
}

.hero {
  min-height: 720px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  padding: 5rem 0 4rem;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 12ch;
  margin-bottom: 1.4rem;
  font-size: clamp(3.2rem, 8vw, 6.6rem);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  font-size: 1.25rem;
}

p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-copy p {
  max-width: 34rem;
  font-size: 1.13rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.15rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  font-weight: 720;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), #79c7ef);
  color: #071012;
  border-color: transparent;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.05);
}

.product-frame {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 1.3rem;
  background: linear-gradient(145deg, #161a23, #0b0d12);
  box-shadow: 0 2rem 5rem rgba(0, 0, 0, 0.38);
}

.window-bar {
  display: flex;
  gap: 0.45rem;
  padding: 1rem;
  border-bottom: 1px solid var(--line);
}

.window-bar span {
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 999px;
  background: var(--line);
}

.mock-shell {
  display: grid;
  grid-template-columns: 15rem 1fr;
  min-height: 31rem;
}

.mock-shell aside {
  padding: 1rem;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.mode {
  display: inline-flex;
  width: calc(50% - 0.25rem);
  justify-content: center;
  margin-bottom: 1rem;
  padding: 0.7rem 0.5rem;
  border-radius: 0.55rem;
  color: var(--muted);
}

.mode.active {
  background: var(--panel-2);
  color: var(--text);
}

.asset {
  height: 11rem;
  border-radius: 0.75rem;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 34%, #e9b992 0 2.6rem, transparent 2.7rem),
    radial-gradient(circle at 50% 67%, #262c38 0 5rem, transparent 5.1rem),
    linear-gradient(135deg, #d8dde7, #7d8798);
}

.portrait-b {
  background:
    radial-gradient(circle at 50% 34%, #d6a784 0 2.6rem, transparent 2.7rem),
    radial-gradient(circle at 50% 67%, #2b2f39 0 5rem, transparent 5.1rem),
    linear-gradient(135deg, #e6dfd6, #8793a3);
}

.swap {
  width: max-content;
  margin: 0.95rem auto;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  color: var(--muted);
}

.mock-shell section {
  padding: 1.4rem;
}

.stage-title {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  font-weight: 740;
}

.preview {
  display: grid;
  min-height: 22rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: #020304;
}

.face {
  width: 9rem;
  height: 12rem;
  border-radius: 50% 50% 44% 44%;
  background:
    radial-gradient(circle at 36% 42%, #30221d 0 0.18rem, transparent 0.22rem),
    radial-gradient(circle at 64% 42%, #30221d 0 0.18rem, transparent 0.22rem),
    radial-gradient(ellipse at 50% 86%, #202632 0 3rem, transparent 3.1rem),
    linear-gradient(#2c2020 0 1.9rem, transparent 1.95rem),
    linear-gradient(145deg, #e1ad84, #c98d67);
  box-shadow: 0 1rem 4rem rgba(114, 226, 209, 0.18);
}

.status {
  color: var(--muted);
  font-size: 0.95rem;
}

.controls {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1rem;
}

.controls button {
  min-width: 8rem;
  min-height: 2.65rem;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: var(--panel-2);
  color: var(--text);
  font: inherit;
  font-weight: 720;
}

.controls .generate {
  background: var(--accent);
  color: #071012;
}

.download,
.split,
.faq {
  margin: 3rem 0;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1.1rem;
  background: rgba(21, 24, 33, 0.72);
}

.document {
  width: min(860px, calc(100% - 2.5rem));
  padding: 5rem 0;
}

.document h1 {
  max-width: 11ch;
  font-size: clamp(3rem, 7vw, 5.2rem);
}

.document h2 {
  margin-top: 2.4rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.download {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 2rem;
}

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

article {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: rgba(255, 255, 255, 0.04);
}

article a {
  color: var(--accent);
  font-weight: 720;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  line-height: 1.9;
}

details {
  border-top: 1px solid var(--line);
  padding: 1.15rem 0;
}

details:last-child {
  border-bottom: 1px solid var(--line);
}

summary {
  cursor: pointer;
  font-weight: 740;
}

details p {
  max-width: 54rem;
  margin: 0.9rem 0 0;
}

footer {
  display: flex;
  justify-content: center;
  gap: 1.3rem;
  padding: 3rem 1rem 4rem;
  color: var(--muted);
}

footer span {
  color: var(--text);
  font-weight: 720;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    flex-wrap: wrap;
  }

  .hero,
  .download,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 3rem;
  }

  h1 {
    max-width: 10ch;
  }

  .mock-shell {
    grid-template-columns: 1fr;
  }

  .mock-shell aside {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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