:root {
  --bg: #f6f8ff;
  --surface: #ffffff;
  --surface-soft: #f2f6ff;
  --text: #1a2340;
  --muted: #5b678a;
  --brand: #3b57ff;
  --brand-2: #00b7a8;
  --brand-3: #ff7a3d;
  --line: #dbe3ff;
  --shadow: 0 16px 40px rgba(31, 48, 120, 0.14);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 12%, rgba(59, 87, 255, 0.16) 0, rgba(59, 87, 255, 0) 33%),
    radial-gradient(circle at 88% 14%, rgba(0, 183, 168, 0.16) 0, rgba(0, 183, 168, 0) 30%),
    radial-gradient(circle at 72% 92%, rgba(255, 122, 61, 0.1) 0, rgba(255, 122, 61, 0) 28%),
    var(--bg);
  line-height: 1.65;
}

a {
  color: var(--brand);
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(219, 227, 255, 0.8);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(12px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.brand {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0.2px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 8px 18px rgba(59, 87, 255, 0.35);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 650;
  padding: 8px 12px;
  border-radius: 10px;
  transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--brand);
  background: rgba(59, 87, 255, 0.1);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  background: #eef2ff;
  border: 1px solid #d3dcff;
  border-radius: 999px;
  padding: 3px;
}

.lang-switch a {
  text-decoration: none;
  color: #4b5aa7;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 10px;
  border-radius: 999px;
  line-height: 1;
}

.lang-switch a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), #2f49da 60%, #2b66ff);
}

main {
  padding: 42px 0 64px;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: stretch;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: #1b2a8f;
  background: rgba(59, 87, 255, 0.12);
  padding: 6px 10px;
  border-radius: 999px;
}

h1 {
  margin: 14px 0 10px;
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  max-width: 60ch;
}

.cta-row {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 700;
  border-radius: 12px;
  padding: 11px 16px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.button.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), #2f49da 60%, #2b66ff);
  box-shadow: 0 10px 24px rgba(59, 87, 255, 0.35);
}

.button.primary:hover {
  transform: translateY(-1px);
}

.button.ghost {
  color: #24326d;
  background: #eef2ff;
  border-color: #d3dcff;
}

.metrics {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.metric {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
}

.metric strong {
  display: block;
  font-size: 18px;
}

.metric span {
  font-size: 12px;
  color: var(--muted);
}

.section {
  margin-top: 24px;
}

.section-title {
  margin: 0 0 14px;
  font-size: clamp(26px, 3vw, 34px);
  letter-spacing: -0.01em;
}

.section-intro {
  margin: 0 0 16px;
  color: var(--muted);
}

.feature-grid,
.grid-2,
.grid-3 {
  display: grid;
  gap: 14px;
}

.feature-grid,
.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
}

.card h3,
.card h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

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

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.list li {
  margin: 8px 0;
}

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

.timeline-item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: flex-start;
}

.step {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(140deg, var(--brand), var(--brand-2));
}

.kicker {
  margin: 0 0 4px;
  font-size: 12px;
  color: #4a57a3;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

details {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 12px 14px;
}

details + details {
  margin-top: 10px;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

summary + p,
summary + ul {
  margin-top: 10px;
}

small,
.muted {
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 0 34px;
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

@media (max-width: 960px) {
  .nav {
    min-height: 84px;
  }

  .nav-right {
    justify-content: flex-start;
  }

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

  .feature-grid,
  .grid-3,
  .grid-2,
  .metrics {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 22px;
  }

  h1 {
    font-size: 36px;
  }

  .lead {
    font-size: 16px;
  }
}