:root {
  --app-bg: #E7E8E8;
  --app-canvas: #F2F2F2;
  --app-surface: #FEFEFE;
  --app-border: #D5D6D7;
  --app-border2: #C6C7C3;
  --app-sidebar: #666B77;
  --app-ink: #121311;
  --app-ink2: #292521;
  --app-muted: #7F828B;
  --app-muted2: #9C9FA3;
  --app-sage: #9CB4A3;
  --app-indigo: #504E87;
  --app-orange: #D16243;
  --shadow-frame: 0 30px 80px rgba(18, 19, 17, 0.18);
  --shadow-card: 0 16px 40px rgba(18, 19, 17, 0.08);
  --shadow-soft: 0 12px 30px rgba(18, 19, 17, 0.06);
  --shadow-tile: 0 18px 45px rgba(18, 19, 17, 0.1);
  --radius-frame: 40px;
  --radius-card: 24px;
  --radius-hero: 32px;
  --radius-input: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Plus Jakarta Sans", sans-serif;
  color: var(--app-ink);
  background: radial-gradient(circle at top left, var(--app-surface) 0%, var(--app-canvas) 45%, var(--app-bg) 100%);
  min-height: 100vh;
}

.backdrop {
  position: fixed;
  inset: -20vh 0 auto;
  height: 60vh;
  background: radial-gradient(circle at 20% 30%, rgba(80, 78, 135, 0.25), transparent 60%),
    radial-gradient(circle at 80% 40%, rgba(209, 98, 67, 0.25), transparent 55%);
  pointer-events: none;
  z-index: -1;
}

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

a:hover {
  color: var(--app-orange);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(80, 78, 135, 0.4);
  outline-offset: 2px;
  border-radius: 999px;
}

.container {
  width: min(1100px, 100% - 32px);
  margin: 0 auto;
}

.site-header {
  padding: 28px 0 12px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 18px;
  background: var(--app-ink);
  color: var(--app-surface);
  font-weight: 700;
  letter-spacing: 1px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.brand-subtitle {
  font-size: 0.9rem;
  color: var(--app-muted);
}

.site-nav {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.btn,
.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn {
  background: var(--app-ink);
  color: var(--app-surface);
  box-shadow: var(--shadow-soft);
}

.btn:hover {
  color: var(--app-surface);
  transform: translateY(-1px);
  box-shadow: var(--shadow-card);
}

.ghost {
  border: 1px solid var(--app-border);
  color: var(--app-ink);
  background: rgba(254, 254, 254, 0.6);
}

.ghost:hover {
  color: var(--app-ink);
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  align-items: center;
  padding: 32px 0 12px;
}

.hero-copy {
  background: rgba(254, 254, 254, 0.7);
  padding: 32px;
  border-radius: var(--radius-hero);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(6px);
}

.hero-copy h1 {
  margin: 16px 0 12px;
  font-size: clamp(2rem, 2.6vw, 2.8rem);
  color: var(--app-ink);
}

.hero-lede {
  font-size: 1.05rem;
  color: var(--app-ink2);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(209, 98, 67, 0.15);
  color: var(--app-orange);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero-card {
  padding: 26px 28px;
  border-radius: var(--radius-card);
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  box-shadow: var(--shadow-soft);
}

.hero-card h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.hero-card ul {
  padding-left: 18px;
  margin: 12px 0 0;
  color: var(--app-ink2);
}

.doc-content {
  margin: 32px 0 64px;
  padding: 28px 32px;
  border-radius: var(--radius-card);
  background: rgba(254, 254, 254, 0.9);
  box-shadow: var(--shadow-card);
}

.doc-content h2 {
  margin-top: 0;
  font-size: 1.4rem;
  color: var(--app-ink);
}

.doc-content h3 {
  margin-top: 24px;
  font-size: 1.1rem;
}

.doc-content ul {
  padding-left: 18px;
  color: var(--app-ink2);
}

.doc-content li {
  margin-bottom: 8px;
}

.doc-content a {
  font-weight: 600;
}

.doc-content code,
.doc-content pre {
  font-family: "Space Mono", monospace;
  font-size: 0.9rem;
}

.site-footer {
  padding: 24px 0 40px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--app-muted);
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
  }

  .hero-copy,
  .doc-content {
    padding: 24px;
  }
}