:root {
  --bg: #07111f;
  --bg2: #0f172a;
  --panel: rgba(255,255,255,0.08);
  --panel-strong: rgba(255,255,255,0.12);
  --text: #ffffff;
  --muted: #c8d2e5;
  --muted2: #91a3bd;
  --green: #22c55e;
  --green-dark: #16a34a;
  --blue: #1565c0;
  --border: rgba(255,255,255,0.13);
  --shadow: 0 24px 70px rgba(0,0,0,0.30);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at 12% 0%, rgba(34,197,94,.24), transparent 32%),
    radial-gradient(circle at 85% 10%, rgba(21,101,192,.30), transparent 31%),
    linear-gradient(180deg, var(--bg), var(--bg2) 45%, #081421);
  color: var(--text);
}
a { color: inherit; }
.container { width: min(92%, 1160px); margin: auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 17, 31, 0.84);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 20px;
  font-weight: 850;
  letter-spacing: -0.035em;
  text-decoration: none;
  white-space: nowrap;
}
.logo-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--green), #60a5fa);
  color: #04131f;
  font-size: 13px;
  font-weight: 950;
  letter-spacing: -0.04em;
}
.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,.055);
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 720;
  padding: 9px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,.075); }
.nav-links .demo-tab {
  color: #062313;
  background: var(--green);
  box-shadow: 0 8px 20px rgba(34,197,94,.20);
}
.nav-links .demo-tab:hover { color: #062313; background: #49dc7d; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 18px;
  border-radius: 999px;
  background: white;
  color: #07111f;
  text-decoration: none;
  border: 1px solid transparent;
  font-weight: 800;
  cursor: pointer;
  white-space: nowrap;
}
.btn.primary {
  background: var(--green);
  color: #062313;
  box-shadow: 0 16px 36px rgba(34,197,94,.25);
}
.btn.primary:hover { background: var(--green-dark); color: #fff; }
.btn.secondary { background: transparent; color: var(--text); border-color: var(--border); }
.btn.secondary:hover { background: rgba(255,255,255,.08); }
.hero { padding: 92px 0 78px; }
.hero-content {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, .98fr);
  gap: 52px;
  align-items: center;
}
.eyebrow {
  margin: 0 0 14px;
  color: #86efac;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 12px;
}
.center { text-align: center; }
h1, h2, h3, h4, p { margin-top: 0; }
h1 {
  font-size: clamp(44px, 7vw, 76px);
  line-height: .93;
  letter-spacing: -0.075em;
  margin-bottom: 22px;
}
h2 {
  font-size: clamp(32px, 4.5vw, 52px);
  line-height: 1.02;
  letter-spacing: -0.055em;
  margin-bottom: 18px;
}
h3 { letter-spacing: -0.025em; }
.hero-lede, .section-lede, .cta p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}
.section-lede.narrow { max-width: 740px; margin-left: auto; margin-right: auto; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.trust-row span {
  border: 1px solid var(--border);
  background: rgba(255,255,255,.065);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 11px;
  font-size: 13px;
  font-weight: 750;
}
.app-preview {
  background: #f5f9ff;
  color: #0b2745;
  border-radius: 30px;
  padding: 14px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.28);
  max-width: 520px;
  margin-left: auto;
}
.preview-topbar {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(21,101,192,.12);
  border-radius: 18px;
  padding: 0 14px;
  margin-bottom: 12px;
}
.preview-topbar span { font-weight: 850; }
.preview-topbar small { color: var(--blue); font-weight: 800; }
.preview-card {
  background: #fff;
  border: 1px solid rgba(21,101,192,.14);
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 14px 34px rgba(21,101,192,.08);
  margin-bottom: 12px;
}
.question-card small { display: block; color: rgba(11,39,69,.62); font-weight: 800; margin-bottom: 8px; }
.question-card strong { display: block; margin-bottom: 12px; font-size: 17px; }
.option {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  border: 1px solid rgba(21,101,192,.14);
  background: #f8fbff;
  border-radius: 12px;
  padding: 11px;
  margin-top: 8px;
  font-weight: 750;
}
.option.selected { border-color: var(--blue); background: #e8f2ff; }
.option span, .stack-title-row span {
  color: var(--blue);
  border: 1px solid rgba(21,101,192,.16);
  background: #eef6ff;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 850;
  white-space: nowrap;
}
.stack-title-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.mini-stack-item {
  border: 1px solid rgba(21,101,192,.12);
  background: #f8fbff;
  border-radius: 12px;
  padding: 10px 12px;
  margin-top: 8px;
}
.mini-stack-item b { display: block; font-size: 14px; }
.mini-stack-item small { display: block; color: rgba(11,39,69,.70); margin-top: 3px; }
.preview-chat {
  max-width: 86%;
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 13px;
  line-height: 1.38;
  margin-top: 8px;
}
.preview-chat.user { margin-left: auto; background: var(--blue); color: white; border-bottom-right-radius: 4px; }
.preview-chat.assistant { background: #e8f2ff; color: #0b2745; border-bottom-left-radius: 4px; }
.problem-section {
  padding: 78px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(34,197,94,.06));
}
.split-section {
  display: grid;
  grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
  gap: 46px;
  align-items: start;
}
.market-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 16px;
}
.market-card, .feature-card, .demo-callout-box {
  background: rgba(255,255,255,.075);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: 0 18px 50px rgba(0,0,0,.16);
}
.market-card { padding: 24px; }
.market-card span, .feature-card span {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: rgba(34,197,94,.18);
  color: #86efac;
  font-weight: 950;
  margin-bottom: 16px;
}
.market-card h3, .feature-card h3 { margin-bottom: 8px; }
.market-card p, .feature-card p, .demo-callout p { color: var(--muted); line-height: 1.55; margin-bottom: 0; }
.features { padding: 82px 0; }
.features h2 { text-align: center; max-width: 760px; margin-left: auto; margin-right: auto; }
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 36px;
}
.feature-card { padding: 26px; min-height: 230px; }
.feature-card.cta-card { background: rgba(34,197,94,.14); }
.feature-card.cta-card a {
  display: inline-flex;
  margin-top: 18px;
  color: #86efac;
  font-weight: 850;
  text-decoration: none;
}
.demo-callout { padding: 20px 0 82px; }
.demo-callout-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 32px;
  background: linear-gradient(135deg, rgba(34,197,94,.16), rgba(21,101,192,.16));
}
.demo-callout h2 { margin-bottom: 10px; }
.cta { padding: 84px 0; text-align: center; border-top: 1px solid var(--border); }
.cta h2 { max-width: 780px; margin-left: auto; margin-right: auto; }
.cta p { max-width: 680px; margin-left: auto; margin-right: auto; }
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}
footer { text-align: center; padding: 28px 18px; color: var(--muted2); font-size: 13px; }

@media (max-width: 920px) {
  .hero-content, .split-section { grid-template-columns: 1fr; }
  .app-preview { margin: 0; max-width: none; }
  .grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .nav { gap: 10px; }
  .nav-btn { display: none; }
}
@media (max-width: 680px) {
  .nav { min-height: auto; padding: 12px 0; flex-wrap: wrap; justify-content: center; }
  .logo { width: 100%; justify-content: center; }
  .nav-links { width: 100%; justify-content: center; gap: 4px; overflow-x: auto; scrollbar-width: none; }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a { font-size: 13px; padding: 8px 9px; }
  .hero { padding: 56px 0 60px; }
  .hero-actions .btn { width: 100%; }
  .market-grid, .grid { grid-template-columns: 1fr; }
  .demo-callout-box { flex-direction: column; align-items: flex-start; }
  .demo-callout-box .btn { width: 100%; }
}
@media (max-width: 460px) {
  .container { width: min(94%, 1160px); }
  h1 { font-size: 42px; }
  .hero-lede, .section-lede, .cta p { font-size: 16px; }
  .app-preview { border-radius: 22px; padding: 10px; }
  .stack-title-row { align-items: flex-start; flex-direction: column; }
}