:root {
  --bg: #06080f;
  --surface: #0f1420;
  --border: rgba(148, 163, 184, 0.18);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #a78bfa;
  --accent-2: #2dd4bf;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--accent); }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: rgba(6, 8, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  font-weight: 800;
  font-size: 1.1rem;
  color: #f8fafc;
  text-decoration: none;
  background: linear-gradient(135deg, #fff, #c4b5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
}

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

.nav-cta {
  padding: 0.4rem 0.9rem !important;
  border-radius: 999px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6) !important;
  color: #fff !important;
}

/* Mobile nav toggle (CSS-only hamburger) */
.nav-toggle { display: none; }

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  padding: 9px 8px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.nav-burger span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Hero */
.hero {
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(167, 139, 250, 0.25), transparent),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(45, 212, 191, 0.12), transparent),
    var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 4rem 1.5rem 3.5rem;
}

.hero-inner { max-width: 920px; margin: 0 auto; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--accent-2);
  font-weight: 700;
}

.hero h1 {
  font-size: clamp(2.25rem, 5.5vw, 3.5rem);
  line-height: 1.15;
  margin: 0.25rem 0 1rem;
  background: linear-gradient(135deg, #fff 0%, #c4b5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lead { font-size: 1.125rem; color: var(--muted); max-width: 680px; }

.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.5rem; }

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.75rem;
}

.hero-badges span {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: rgba(99, 102, 241, 0.08);
}

/* Get started + static product preview */
.start-section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 70% 50% at 20% 0%, rgba(99, 102, 241, 0.08), transparent),
    var(--bg);
}

.start-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 2.5rem;
  align-items: center;
}

.start-copy h2 {
  margin: 0.35rem 0 0.75rem;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  color: #f8fafc;
}

.start-lede {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.7;
  max-width: 520px;
}

.start-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}

.start-steps {
  margin: 0 0 1.5rem;
  padding-left: 1.2rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.start-steps strong { color: var(--text); }

.start-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
}

.start-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem 1rem;
}

.start-card h3 {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  color: #c4b5fd;
}

.start-card pre {
  margin: 0 0 0.5rem;
  padding: 0.65rem;
  font-size: 0.72rem;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.35);
  border: none;
}

.start-card p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.product-preview {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  overflow: hidden;
  background: #05070d;
  box-shadow:
    0 24px 80px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(99, 102, 241, 0.12);
}

.product-preview__chrome {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.65rem 1rem;
  background: rgba(12, 16, 26, 0.98);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.product-preview__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.product-preview__dot:first-child { background: #52525b; }
.product-preview__dot:nth-child(2) { background: #3f3f46; }
.product-preview__dot:nth-child(3) { background: #27272a; }

.product-preview__title {
  margin-left: 0.5rem;
  font-size: 0.72rem;
  color: #71717a;
  font-family: ui-monospace, monospace;
}

.product-preview__body {
  display: grid;
  grid-template-columns: 88px 1fr;
  min-height: 280px;
}

.preview-sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.85rem 0.65rem;
  background: rgba(8, 11, 18, 0.95);
  border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.preview-sidebar__label {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #52525b;
  margin-bottom: 0.25rem;
}

.preview-pill {
  font-size: 0.68rem;
  padding: 0.28rem 0.45rem;
  border-radius: 6px;
  color: #a1a1aa;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.preview-canvas {
  position: relative;
  background:
    radial-gradient(circle at 30% 25%, rgba(99, 102, 241, 0.07), transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(56, 189, 248, 0.04), transparent 45%),
    #070a10;
  background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 22px 22px;
}

.preview-edges {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.preview-node {
  position: absolute;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.45rem 0.65rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(165deg, rgba(18, 22, 38, 0.96), rgba(8, 10, 18, 0.98));
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  color: #e4e4e7;
}

.preview-node--start { top: 42%; left: 6%; color: #86efac; border-color: rgba(134, 239, 172, 0.25); }
.preview-node--rag { top: 38%; left: 38%; color: #a5b4fc; border-color: rgba(165, 180, 252, 0.3); }
.preview-node--llm { top: 18%; left: 58%; color: #c4b5fd; border-color: rgba(196, 181, 253, 0.25); }
.preview-node--end { top: 42%; right: 6%; color: #fda4af; border-color: rgba(253, 164, 175, 0.25); }

.container-wide { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* Prevent grid/flex blowout from wide code blocks */
.start-grid > *,
.start-cards > *,
.sdk-grid > *,
.sdk-langs > *,
.grid > *,
.compare-columns > *,
.compare-panels > * { min-width: 0; }

:not(pre) > code { overflow-wrap: anywhere; }

/* Content */
.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

section { margin-bottom: 3rem; }

h2 {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  color: #f8fafc;
}

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

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.15rem 1.25rem;
}

.card-icon {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--accent);
}

.card h3 { margin: 0 0 0.5rem; font-size: 1rem; color: #c4b5fd; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }

.card-highlight {
  border-color: rgba(167, 139, 250, 0.35);
  background: rgba(99, 102, 241, 0.06);
}

.card-highlight pre {
  margin: 0.75rem 0;
  padding: 0.75rem;
  font-size: 0.78rem;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 8px;
  overflow-x: auto;
}

.card-highlight .btn { margin-top: 0.75rem; font-size: 0.85rem; }

.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  font-size: 0.9rem;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--surface);
}

pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  overflow-x: auto;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  background: rgba(99, 102, 241, 0.15);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

.doc-list {
  color: var(--muted);
  line-height: 1.8;
  padding-left: 1.25rem;
}

/* SDK section */
.sdk-section {
  padding: 3.5rem 0;
  background:
    radial-gradient(ellipse 70% 50% at 80% 0%, rgba(45, 212, 191, 0.06), transparent),
    var(--bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.sdk-intro {
  max-width: 760px;
  margin-bottom: 2rem;
}

.sdk-intro h2 {
  margin: 0.35rem 0 0.75rem;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  color: #f8fafc;
}

.sdk-lede {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.sdk-langs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.sdk-lang {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
  opacity: 0.75;
}

.sdk-lang--available {
  opacity: 1;
  border-color: rgba(45, 212, 191, 0.35);
  background: rgba(45, 212, 191, 0.06);
}

.sdk-lang__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.sdk-lang__name {
  font-weight: 700;
  font-size: 1rem;
  color: #f8fafc;
}

.sdk-lang p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.sdk-badge {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  color: var(--muted);
  background: rgba(148, 163, 184, 0.12);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.sdk-badge--live {
  color: #042f2a;
  background: linear-gradient(135deg, #2dd4bf, #5eead4);
  border-color: transparent;
}

.sdk-detail {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem 1.6rem;
}

.sdk-detail__head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.5rem;
}

.sdk-detail__head h3 {
  margin: 0;
  font-size: 1.25rem;
  color: #f8fafc;
}

.sdk-detail__lede {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.7;
  max-width: 720px;
}

.sdk-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.sdk-card {
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.15rem;
}

.sdk-card--wide { grid-column: 1 / -1; }

.sdk-card h4 {
  margin: 0 0 0.65rem;
  font-size: 0.9rem;
  color: #c4b5fd;
}

.sdk-card pre {
  margin: 0 0 0.5rem;
  padding: 0.85rem;
  font-size: 0.78rem;
  line-height: 1.55;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
}

.sdk-card pre:last-child { margin-bottom: 0; }

.sdk-card p {
  margin: 0.5rem 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.sdk-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.sdk-chip {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.74rem;
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
  color: #a5b4fc;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.sdk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.875rem;
}

.footer a { color: var(--accent); margin: 0 0.25rem; }

/* Market comparison */
.compare-section {
  padding: 3.5rem 0;
  background:
    linear-gradient(180deg, rgba(45, 212, 191, 0.04) 0%, var(--bg) 40%, rgba(99, 102, 241, 0.05) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.compare-intro {
  max-width: 760px;
  margin-bottom: 2.5rem;
}

.compare-intro h2 {
  margin: 0.35rem 0 0.75rem;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  color: #f8fafc;
}

.compare-lede {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.compare-lede strong { color: var(--text); }

.compare-subhead {
  margin: 2rem 0 1rem;
  font-size: 1.1rem;
  color: #c4b5fd;
  font-weight: 700;
}

.compare-panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.compare-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
}

.compare-panel h4 {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
  color: #f8fafc;
}

.compare-panel ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

.compare-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  margin-bottom: 2rem;
  -webkit-overflow-scrolling: touch;
}

.compare-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.compare-table th,
.compare-table td {
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.compare-table thead th {
  background: rgba(99, 102, 241, 0.12);
  color: #e2e8f0;
  font-weight: 700;
  font-size: 0.8rem;
}

.compare-table tbody tr:last-child td { border-bottom: none; }

.compare-table tbody tr:hover td {
  background: rgba(99, 102, 241, 0.04);
}

.compare-highlight {
  background: rgba(167, 139, 250, 0.08);
  font-weight: 600;
  color: #f8fafc;
}

.compare-gap {
  background: rgba(251, 191, 36, 0.06);
  color: #fde68a;
}

.mark-yes { color: #6ee7b7; font-weight: 700; }
.mark-no { color: #fca5a5; font-weight: 700; }
.mark-gap { color: #fbbf24; font-weight: 700; }

.compare-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

.compare-edge,
.compare-gaps {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.35rem;
}

.compare-edge {
  border-color: rgba(45, 212, 191, 0.35);
}

.compare-gaps {
  border-color: rgba(251, 191, 36, 0.25);
}

.compare-edge h3,
.compare-gaps h3 {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  color: #f8fafc;
}

.compare-edge ol,
.compare-gaps ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.compare-edge li + li,
.compare-gaps li + li { margin-top: 0.55rem; }

.compare-edge strong,
.compare-gaps strong { color: var(--text); }

.compare-gaps-note {
  margin: 1rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}

.compare-callout {
  padding: 1.1rem 1.25rem;
  border-radius: 12px;
  border: 1px solid rgba(167, 139, 250, 0.35);
  background: rgba(99, 102, 241, 0.1);
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.compare-callout strong { color: #f8fafc; }

/* Tablet + collapsed nav */
@media (max-width: 860px) {
  .nav { flex-wrap: wrap; row-gap: 0.5rem; }

  .nav-burger { display: flex; }

  .nav-links {
    display: none;
    order: 3;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    width: 100%;
    margin-top: 0.5rem;
  }

  .nav-toggle:checked ~ .nav-links { display: flex; }

  .nav-links a {
    display: block;
    padding: 0.7rem 0.6rem;
    font-size: 0.95rem;
    border-radius: 9px;
  }

  .nav-links a:not(.nav-cta):hover { background: rgba(148, 163, 184, 0.08); }

  .nav-cta { text-align: center; margin-top: 0.35rem; }

  .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .start-grid { grid-template-columns: 1fr; gap: 1.75rem; }
}

/* Phone */
@media (max-width: 640px) {
  .hero { padding: 3rem 1.15rem 2.5rem; }
  .start-section,
  .sdk-section,
  .compare-section { padding: 2.5rem 0; }
  .container { padding: 2rem 1.15rem 3rem; }
  .container-wide { padding: 0 1.15rem; }

  .hero-actions,
  .start-actions,
  .sdk-actions { width: 100%; }

  .hero-actions .btn,
  .start-actions .btn,
  .sdk-actions .btn { flex: 1 1 auto; justify-content: center; }

  .start-cards { grid-template-columns: 1fr; }
  .product-preview__body { min-height: 220px; }
  .compare-panels { grid-template-columns: 1fr; }
  .compare-columns { grid-template-columns: 1fr; }
  .sdk-grid { grid-template-columns: 1fr; }
  .sdk-langs { grid-template-columns: 1fr; }
  .sdk-detail { padding: 1.25rem 1.1rem; }

  .start-card pre,
  .sdk-card pre,
  .card-highlight pre { overflow-x: auto; }
}