:root {
  --ink: #102138;
  --muted: #5f6f83;
  --line: #dfe8f1;
  --primary: #2e5f8a;
  --primary-dark: #21476b;
  --accent: #e0a44e;
  --canvas: #f6f9fc;
  --surface: #fff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(900px 500px at 95% -5%, #dceaf6 0%, transparent 60%),
    radial-gradient(700px 450px at -5% 10%, #f8ecd8 0%, transparent 55%),
    var(--canvas);
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(246, 249, 252, .85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(223, 232, 241, .85);
}
.nav { height: 76px; display: flex; align-items: center; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 750; letter-spacing: -.02em; }
.mark {
  width: 36px; height: 36px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(145deg, #5b8fbb, #2e5f8a); color: #fff; font-weight: 800;
  box-shadow: 0 10px 24px rgba(46, 95, 138, .3);
}
.nav-links { display: flex; gap: 24px; color: var(--muted); font-size: 14px; }
.nav-links a:hover { color: var(--ink); }
.nav-actions { margin-left: auto; display: flex; gap: 9px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid transparent; border-radius: 11px; padding: 11px 18px;
  font-weight: 650; font-size: 13.5px; cursor: pointer;
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 14px 28px rgba(46,95,138,.22); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: rgba(255,255,255,.7); border-color: var(--line); color: var(--ink); }
.btn-light { background: #fff; color: var(--ink); }
.btn-lg { padding: 13px 22px; font-size: 14.5px; }

.hero { padding: 78px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 54px; align-items: center; }
.eyebrow {
  display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: .15em;
  text-transform: uppercase; color: var(--primary); margin-bottom: 13px;
}
h1 {
  margin: 0 0 18px; font-size: clamp(42px, 5vw, 66px);
  line-height: 1.01; letter-spacing: -.05em;
}
h1 em { font-style: normal; color: var(--primary); }
.lead { max-width: 550px; color: var(--muted); font-size: 16.5px; }
.hero-actions { display: flex; gap: 10px; margin: 26px 0 18px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 20px; flex-wrap: wrap; font-size: 11.5px; color: var(--muted); }
.hero-meta span::before { content: "✓"; color: var(--primary); font-weight: 800; margin-right: 5px; }

.hero-visual { position: relative; }
.chat-card {
  background: #fff; border: 1px solid rgba(255,255,255,.9); border-radius: 24px;
  box-shadow: 0 30px 70px rgba(17, 43, 70, .14); overflow: hidden;
}
.chat-head { display: flex; align-items: center; gap: 10px; padding: 15px 17px; border-bottom: 1px solid var(--line); }
.avatar { width: 36px; height: 36px; border-radius: 12px; display: grid; place-items: center; background: var(--primary); color: #fff; font-weight: 800; }
.chat-head strong { display: block; font-size: 13.5px; }
.chat-head small { display: block; font-size: 10px; color: var(--muted); }
.dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: #3bb273; margin-right: 3px; }
.chat-body { padding: 16px; display: flex; flex-direction: column; gap: 9px; background: #f7fafd; }
.msg { max-width: 88%; padding: 10px 13px; border-radius: 14px; font-size: 12.5px; line-height: 1.5; }
.msg.user { align-self: flex-end; background: var(--primary); color: #fff; border-bottom-right-radius: 4px; }
.msg.bot { align-self: flex-start; background: #fff; border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.source { display: block; margin-top: 5px; font-size: 10px; color: var(--primary); font-weight: 750; }
.chat-input { margin-top: 4px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 11px 12px; font-size: 12px; color: #93a1b3; }
.visual-badge {
  position: absolute; right: 16px; top: -12px; background: var(--accent); color: #2a1b06;
  font-size: 10px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase;
  padding: 7px 11px; border-radius: 99px; box-shadow: 0 10px 22px rgba(224,164,78,.35);
}

.stats { padding: 18px 0; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  background: rgba(255,255,255,.65); border: 1px solid var(--line);
  border-radius: 18px; padding: 20px; backdrop-filter: blur(8px);
}
.stats-grid div { text-align: center; border-right: 1px solid var(--line); }
.stats-grid div:last-child { border-right: 0; }
.stats-grid strong { display: block; font-size: 24px; letter-spacing: -.04em; }
.stats-grid span { font-size: 11px; color: var(--muted); }

.section { padding: 74px 0; }
.section.soft { background: rgba(255,255,255,.55); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 700px; margin-bottom: 30px; }
.section-head h2 { margin: 0 0 10px; font-size: clamp(30px, 3.4vw, 42px); line-height: 1.08; letter-spacing: -.04em; }
.section-head p { margin: 0; color: var(--muted); font-size: 14.5px; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.fi { display: inline-block; font-size: 10px; font-weight: 800; color: var(--primary); background: #eaf2f9; padding: 5px 8px; border-radius: 7px; margin-bottom: 12px; }
.feature h3 { margin: 0 0 6px; font-size: 15.5px; }
.feature p { margin: 0; color: var(--muted); font-size: 12.5px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.step span { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; background: var(--primary); color: #fff; font-weight: 800; font-size: 13px; margin-bottom: 12px; }
.step h3 { margin: 0 0 5px; font-size: 15px; }
.step p { margin: 0; color: var(--muted); font-size: 12.5px; }

.integration { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.integration h2 { margin: 0 0 12px; font-size: clamp(30px, 3.5vw, 44px); line-height: 1.05; letter-spacing: -.04em; }
.integration p { color: var(--muted); font-size: 14px; max-width: 480px; }
.integration .btn { margin-top: 14px; }
.code-card { background: #0f1e30; color: #dce9f5; border-radius: 17px; padding: 16px; box-shadow: 0 24px 50px rgba(16,33,56,.2); }
.code-head { display: flex; justify-content: space-between; font-size: 10px; color: #8ba2ba; padding-bottom: 10px; border-bottom: 1px solid rgba(255,255,255,.1); }
.code-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.code-card pre { margin: 15px 0 12px; overflow-x: auto; }
.code-card code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 11.5px; line-height: 1.8; color: #cfe2f3; }
.code-card p { margin: 0; font-size: 10.5px; color: #9fb6cb; }
.check { color: #5fd39b; font-weight: 800; }

.cta { padding: 40px 0 70px; }
.cta-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 30px;
  background: linear-gradient(135deg, #173b5c, #2e5f8a); color: #fff;
  border-radius: 22px; padding: 32px 34px; box-shadow: 0 24px 55px rgba(20,48,75,.2);
}
.cta h2 { margin: 0 0 6px; font-size: 26px; letter-spacing: -.03em; }
.cta p { margin: 0; color: #c6d9e8; font-size: 13px; }

.site-footer { border-top: 1px solid var(--line); padding: 30px 0; background: rgba(255,255,255,.5); }
.footer-grid { display: flex; justify-content: space-between; gap: 24px; align-items: start; }
.footer-grid p { margin: 8px 0 0; color: var(--muted); font-size: 12px; }
.footer-links { display: flex; gap: 20px; font-size: 12.5px; color: var(--muted); }
.footer-links a:hover { color: var(--ink); }
.fine { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); color: #8a99ab; font-size: 10.5px; }

@media (max-width: 900px) {
  .hero-grid, .integration { grid-template-columns: 1fr; gap: 34px; }
  .hero { padding-top: 48px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid div:nth-child(2) { border-right: 0; }
  .cta-inner { flex-direction: column; align-items: start; }
}
@media (max-width: 560px) {
  .container { width: calc(100% - 28px); }
  h1 { font-size: 42px; }
  .feature-grid { grid-template-columns: 1fr; }
  .nav-actions .btn-ghost { display: none; }
  .footer-grid { flex-direction: column; }
  .btn-lg { width: 100%; }
  .hero-actions { flex-direction: column; align-items: stretch; }
}