:root {
  color-scheme: dark;
  --bg: #101216;
  --panel: #171a20;
  --panel-strong: #1f242c;
  --text: #f4f7fb;
  --muted: #b8c0cc;
  --quiet: #7f8997;
  --line: #303640;
  --blue: #68d3ff;
  --blue-strong: #6f92ff;
  --green: #80e2a7;
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top left, rgba(104, 211, 255, 0.16), transparent 34rem),
    radial-gradient(circle at bottom right, rgba(111, 146, 255, 0.13), transparent 28rem),
    var(--bg);
  color: var(--text);
  font: 16px/1.6 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  letter-spacing: 0;
}

a {
  color: var(--blue);
  text-underline-offset: 0.18em;
}

a:hover {
  color: #a6e7ff;
}

.site-shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 720;
  text-decoration: none;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.75fr);
  gap: 42px;
  align-items: center;
  min-height: 560px;
  padding: 46px 0 72px;
}

.eyebrow {
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 780;
  letter-spacing: 0.14em;
  margin: 0 0 16px;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(3.4rem, 9vw, 6.4rem);
  font-weight: 760;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 720;
}

h3 {
  font-size: 1.12rem;
  font-weight: 720;
}

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

.lead {
  max-width: 660px;
  margin-top: 24px;
  font-size: 1.16rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--blue-strong));
  color: #071018;
  font-weight: 760;
  text-decoration: none;
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.product-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  box-shadow: var(--shadow);
}

.product-panel::before {
  content: "";
  display: block;
  height: 34px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 24px 17px, #ff5f57 0 5px, transparent 6px),
    radial-gradient(circle at 44px 17px, #ffbd2e 0 5px, transparent 6px),
    radial-gradient(circle at 64px 17px, #28c840 0 5px, transparent 6px),
    rgba(255, 255, 255, 0.03);
}

.chat-preview {
  display: grid;
  gap: 14px;
  padding: 22px;
}

.chat-line {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--green));
}

.bubble {
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
}

.bubble strong {
  display: block;
  color: var(--text);
  font-size: 0.88rem;
  line-height: 1.25;
}

.bubble span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.94rem;
}

.section {
  padding: 72px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.section-heading {
  max-width: 700px;
}

.section-heading p {
  margin-top: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.card {
  min-height: 180px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.035);
}

.card p {
  margin-top: 10px;
}

.legal-page {
  max-width: 820px;
  padding: 46px 0 92px;
}

.legal-page h1 {
  font-size: clamp(2.8rem, 8vw, 5rem);
}

.legal-page h2 {
  margin-top: 38px;
  font-size: 1.45rem;
}

.legal-page p,
.legal-page li {
  color: var(--muted);
}

.legal-page p {
  margin-top: 16px;
}

.legal-page ul {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding-left: 22px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px 0 46px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--quiet);
  font-size: 0.92rem;
}

.footer a {
  color: var(--muted);
}

@media (max-width: 840px) {
  .topbar,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    flex-wrap: wrap;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-top: 28px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .site-shell {
    width: min(100% - 28px, 1120px);
  }

  h1 {
    font-size: clamp(2.6rem, 16vw, 4rem);
  }

  .actions {
    align-items: stretch;
    flex-direction: column;
  }
}