:root {
  --bg: #ffffff;
  --bg-alt: #f4f6fb;
  --surface: #ffffff;
  --fg: #141a2b;
  --muted: #566079;
  --rule: #dde2ee;
  --accent: #2448c4;
  --accent-hover: #1a3696;
  --accent-soft: #e6ecff;
  --hero-bg: linear-gradient(160deg, #0f1730 0%, #1b2a5c 60%, #24409a 100%);
  --hero-fg: #f2f5ff;
  --hero-muted: #b8c3e6;
  --code: #eef1f8;
  --shadow: 0 20px 50px rgba(15, 23, 48, .18);
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12151e;
    --bg-alt: #181c28;
    --surface: #1d2230;
    --fg: #e7eaf3;
    --muted: #9aa3bb;
    --rule: #2c3346;
    --accent: #7b9cff;
    --accent-hover: #a3bbff;
    --accent-soft: #232c4a;
    --hero-bg: linear-gradient(160deg, #0b0f1c 0%, #141e40 60%, #1c3075 100%);
    --code: #252b3b;
    --shadow: 0 20px 50px rgba(0, 0, 0, .5);
  }
}
:root[data-theme="dark"] {
  --bg: #12151e; --bg-alt: #181c28; --surface: #1d2230; --fg: #e7eaf3; --muted: #9aa3bb;
  --rule: #2c3346; --accent: #7b9cff; --accent-hover: #a3bbff; --accent-soft: #232c4a;
  --hero-bg: linear-gradient(160deg, #0b0f1c 0%, #141e40 60%, #1c3075 100%);
  --code: #252b3b; --shadow: 0 20px 50px rgba(0, 0, 0, .5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
code, kbd { font: 14px "Cascadia Code", Consolas, ui-monospace, monospace; background: var(--code); padding: 1px 6px; border-radius: 5px; }
pre { background: var(--code); padding: 16px 18px; border-radius: 10px; overflow-x: auto; }
pre code { padding: 0; background: none; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--fg); }
.brand:hover { text-decoration: none; color: var(--fg); }
.brand img { width: 32px; height: 32px; }
.nav { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.nav a { color: var(--muted); padding: 8px 12px; border-radius: 8px; font-weight: 500; font-size: 15px; }
.nav a:hover { color: var(--fg); background: var(--bg-alt); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--fg); }
.nav .btn { margin-left: 8px; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--rule); color: var(--fg); border-radius: 8px; padding: 6px 10px; font: inherit; cursor: pointer; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 10px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: background .15s, border-color .15s, transform .15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
:root:not([data-theme="light"]) .btn-primary { color: #fff; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn-primary { color: #0b1020; } }
.btn-ghost { border-color: var(--rule); color: var(--fg); }
.btn-ghost:hover { border-color: var(--accent); color: var(--fg); }
.btn-light { background: #fff; color: #142060; }
.btn-light:hover { background: #e6ecff; color: #142060; }
.btn-outline-light { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-outline-light:hover { border-color: #fff; color: #fff; }
.nav .btn { padding: 8px 14px; }

/* Hero */
.hero { background: var(--hero-bg); color: var(--hero-fg); padding: 80px 0 88px; overflow: hidden; }
.hero .wrap { text-align: center; }
.hero h1 { font-size: clamp(36px, 6vw, 60px); line-height: 1.1; margin: 0 0 18px; letter-spacing: -0.02em; }
.hero h1 .accent { color: #9db4ff; }
.hero p.lead { font-size: clamp(17px, 2.2vw, 20px); color: var(--hero-muted); max-width: 720px; margin: 0 auto 32px; }
.hero .actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; }
.hero .meta { font-size: 14px; color: var(--hero-muted); margin-bottom: 56px; }
.hero .shot {
  max-width: 1000px; margin: 0 auto; border-radius: 12px;
  box-shadow: 0 24px 60px rgba(0,0,0,.45); border: 1px solid rgba(255,255,255,.12);
}
.badge {
  display: inline-block; font-size: 13px; font-weight: 600; padding: 4px 12px; border-radius: 99px;
  background: rgba(157,180,255,.15); color: #c9d6ff; border: 1px solid rgba(157,180,255,.3); margin-bottom: 22px;
}

/* Page hero (inner pages) */
.page-hero { background: var(--hero-bg); color: var(--hero-fg); padding: 64px 0 56px; }
.page-hero h1 { font-size: clamp(32px, 5vw, 46px); margin: 0 0 10px; letter-spacing: -0.02em; line-height: 1.15; }
.page-hero p { color: var(--hero-muted); font-size: 18px; margin: 0; max-width: 680px; }

/* Sections */
section { padding: 88px 0; }
section.alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-head h2 { font-size: clamp(28px, 4vw, 38px); margin: 0 0 12px; letter-spacing: -0.015em; line-height: 1.2; }
.section-head p { color: var(--muted); font-size: 18px; margin: 0; }
.eyebrow { text-transform: uppercase; letter-spacing: .1em; font-size: 13px; font-weight: 700; color: var(--accent); margin-bottom: 10px; }

.grid { display: grid; gap: 20px; }
.grid > *, .split > *, .steps > * { min-width: 0; }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 26px;
  transition: border-color .15s, transform .15s;
}
a.card { color: var(--fg); display: block; }
a.card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-2px); }
.card h3 { margin: 14px 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .icon {
  width: 44px; height: 44px; border-radius: 10px; background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center;
}
.card .icon svg { width: 24px; height: 24px; }

.diagram-type { text-align: center; padding: 22px 16px; }
.diagram-type svg { width: 64px; height: 48px; margin: 0 auto; color: var(--accent); }
.diagram-type h3 { font-size: 16px; margin: 12px 0 4px; }
.diagram-type p { font-size: 14px; }

/* Split feature rows */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.split + .split { margin-top: 88px; }
.split.reverse > :first-child { order: 2; }
.split h3 { font-size: 28px; margin: 0 0 14px; letter-spacing: -0.01em; line-height: 1.25; }
.split p { color: var(--muted); font-size: 17px; }
.split ul { padding-left: 20px; color: var(--muted); }
.split li { margin: 6px 0; }
.visual {
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 22px;
  box-shadow: var(--shadow);
}
.visual pre { margin: 0; font-size: 13.5px; line-height: 1.55; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chip { font-size: 13px; font-weight: 600; padding: 5px 12px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); }

.chat { display: flex; flex-direction: column; gap: 12px; font-size: 14.5px; }
.bubble { padding: 12px 14px; border-radius: 12px; max-width: 88%; }
.bubble.user { align-self: flex-end; background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .bubble.user { color: #0b1020; } }
.bubble.ai { align-self: flex-start; background: var(--bg-alt); border: 1px solid var(--rule); border-bottom-left-radius: 4px; }
.bubble .apply { display: inline-block; margin-top: 8px; font-size: 13px; font-weight: 600; color: var(--accent); }

/* Steps */
.steps { counter-reset: step; display: grid; gap: 20px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.step { position: relative; padding-top: 56px; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; top: 0; left: 0; width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent); color: #fff; font-weight: 700; display: grid; place-items: center;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .step::before { color: #0b1020; } }
.step h3 { margin: 0 0 6px; font-size: 18px; }
.step p { margin: 0; color: var(--muted); }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: .05em; }
.table-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); }
.table-wrap tr:last-child td { border-bottom: 0; }

/* Platform cards */
.platform { display: flex; flex-direction: column; gap: 14px; }
.platform .icon { width: 52px; height: 52px; }
.platform .icon svg { width: 28px; height: 28px; }
.platform h3 { margin: 0; font-size: 22px; }
.platform .builds { display: flex; flex-direction: column; gap: 8px; margin-top: auto; }
.platform .builds .btn { justify-content: space-between; }
.platform .builds small { font-weight: 500; color: var(--muted); }

.note { border-left: 4px solid var(--accent); background: var(--accent-soft); padding: 16px 20px; border-radius: 0 10px 10px 0; }
.note p { margin: 4px 0; }

/* CTA */
.cta { background: var(--hero-bg); color: var(--hero-fg); text-align: center; padding: 80px 0; }
.cta h2 { font-size: clamp(28px, 4vw, 38px); margin: 0 0 12px; }
.cta p { color: var(--hero-muted); font-size: 18px; margin: 0 0 30px; }
.cta .actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.site-footer { border-top: 1px solid var(--rule); padding: 48px 0 40px; font-size: 14px; color: var(--muted); }
.site-footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.site-footer h4 { color: var(--fg); font-size: 14px; margin: 0 0 12px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 6px 0; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--fg); }
.site-footer .legal { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--rule); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.theme-toggle { background: none; border: 1px solid var(--rule); color: var(--muted); border-radius: 8px; padding: 4px 10px; font: inherit; cursor: pointer; }
.theme-toggle:hover { color: var(--fg); border-color: var(--accent); }

/* Prose (docs page) */
.prose { max-width: 760px; }
.prose h2 { font-size: 26px; margin: 48px 0 12px; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--muted); }

/* Responsive */
@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split, .split.reverse { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .split.reverse > :first-child { order: 0; }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .site-footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .wrap { padding: 0 16px; }
  section { padding: 64px 0; }
  .grid-3, .grid-2 { grid-template-columns: minmax(0, 1fr); }
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: var(--bg); border-bottom: 1px solid var(--rule); padding: 8px 16px 16px; gap: 2px;
  }
  .nav.open { display: flex; }
  .nav .btn { margin: 8px 0 0; justify-content: center; }
  .hero { padding: 56px 0 56px; }
}
@media (max-width: 460px) {
  .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .site-footer .cols { grid-template-columns: 1fr; }
}