:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --ink: #162033;
  --muted: #667085;
  --line: #d8deea;
  --blue: #1769e0;
  --blue-dark: #0e4fa9;
  --green: #14845f;
  --amber: #b86b00;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(216, 222, 234, 0.85);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.nav-inner,
.section,
.hero-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 6px;
  background: var(--blue);
  color: #fff;
  padding: 0 16px;
  text-decoration: none;
}

.button:hover {
  background: var(--blue-dark);
}

.hero {
  padding: 58px 0 34px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  align-items: center;
  gap: 36px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-weight: 700;
}

h1 {
  margin: 0;
  max-width: 680px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}

.lead {
  margin: 20px 0 0;
  max-width: 650px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button.secondary {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}

.button.secondary:hover {
  background: #f0f4fb;
}

.product-shot {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 24px 70px rgba(25, 38, 68, 0.14);
}

.shot-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding: 12px 14px;
}

.dots {
  display: flex;
  gap: 6px;
}

.dots span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #c5ccda;
}

.shot-title {
  color: var(--muted);
  font-size: 13px;
}

.shot-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  min-height: 390px;
}

.knowledge-pane,
.chat-pane {
  padding: 18px;
}

.knowledge-pane {
  border-left: 1px solid var(--line);
  background: #fbfcff;
}

.pane-title {
  margin: 0 0 12px;
  font-weight: 700;
}

.sample-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 12px;
  margin-bottom: 10px;
}

.sample-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
}

.sample-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.chat-bubble {
  max-width: 88%;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 10px;
  line-height: 1.65;
}

.chat-bubble.user {
  margin-right: auto;
  background: #eef3fb;
}

.chat-bubble.assistant {
  margin-left: auto;
  background: #edf8f3;
}

.meta-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 18px;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 12px;
}

.metric strong {
  display: block;
  margin-bottom: 4px;
  font-size: 22px;
}

.metric span {
  color: var(--muted);
  font-size: 13px;
}

.section {
  padding: 34px 0;
}

.section h2 {
  margin: 0 0 18px;
  font-size: 30px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 18px;
}

.card h3 {
  margin: 0 0 8px;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.process {
  display: grid;
  gap: 10px;
}

.step {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 12px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 14px;
}

.step-number {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #eef4ff;
  color: var(--blue);
  font-weight: 700;
}

.step h3 {
  margin: 0 0 4px;
}

.step p {
  margin: 0;
  color: var(--muted);
}

.notice {
  border: 1px solid #f0cf97;
  border-radius: 8px;
  background: #fff8ec;
  color: #714400;
  padding: 16px;
}

.footer {
  border-top: 1px solid var(--line);
  margin-top: 28px;
  padding: 24px 0 36px;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.footer-links {
  display: flex;
  gap: 14px;
}

@media (max-width: 920px) {
  .hero-inner,
  .shot-grid,
  .cards,
  .meta-row {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 36px;
  }

  .knowledge-pane {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 640px) {
  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 0;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  h1 {
    font-size: 42px;
  }
}