:root {
  --bg: #05070b;
  --surface: #0c1017;
  --surface-2: #111722;
  --text: #f6f8fb;
  --muted: #9aa8ba;
  --line: #202a39;
  --accent: #5d7cff;
  --accent-2: #9c5cff;
  --good: #70e6bd;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

[data-theme="light"] {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-2: #eef2f7;
  --text: #0e1420;
  --muted: #526070;
  --line: #dbe3ee;
  --accent: #315eff;
  --accent-2: #7b3ff2;
  --good: #0f9f72;
  --shadow: 0 30px 80px rgba(20, 30, 50, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 70% 10%, rgba(93, 124, 255, 0.18), transparent 32rem),
    radial-gradient(circle at 20% 20%, rgba(156, 92, 255, 0.12), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-shell {
  width: min(1320px, calc(100% - 40px));
  margin: 0 auto;
}

.navbar {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: 22px;
}

.brand span span {
  color: var(--muted);
  font-weight: 500;
}

.brand-logo {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.nav-links,
.nav-actions,
.footer nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-links a,
.footer a {
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
}

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

.icon-btn,
.lang-btn,
.mobile-menu-btn {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
  font-weight: 700;
}

.lang-btn.active {
  color: #ffffff;
  background: var(--accent);
  border-color: var(--accent);
}

.mobile-menu-btn {
  display: none;
}

.btn,
.preview-form button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 13px 20px;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn.small {
  padding: 9px 15px;
  font-size: 14px;
}

.btn.primary,
.preview-form button {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #ffffff;
}

.btn.secondary {
  background: transparent;
  color: var(--text);
}

.hero {
  min-height: calc(100vh - 78px);
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: 70px;
  padding: 70px 0 84px;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  width: fit-content;
  color: #cfd8ff;
  background: rgba(93, 124, 255, 0.16);
  border: 1px solid rgba(93, 124, 255, 0.28);
  border-radius: 999px;
  padding: 7px 13px;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(56px, 7.2vw, 104px);
  line-height: 0.92;
  letter-spacing: -0.075em;
  margin: 0 0 24px;
  max-width: 860px;
}

.hero p {
  color: var(--muted);
  font-size: clamp(18px, 1.7vw, 23px);
  max-width: 690px;
  margin: 0 0 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-visual {
  min-height: 540px;
  border-radius: 36px;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(93, 124, 255, 0.16), rgba(156, 92, 255, 0.08)),
    var(--surface);
  display: grid;
  place-items: center;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-visual img {
  width: min(78%, 520px);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 34px rgba(93, 124, 255, 0.34));
}

.trust-strip {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
  border-radius: 22px;
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  color: var(--muted);
  font-weight: 700;
}

.section,
.split-section {
  padding: 92px 0;
}

.section-head {
  max-width: 760px;
  margin-bottom: 34px;
}

.section h2,
.split-section h2 {
  font-size: clamp(36px, 4vw, 66px);
  letter-spacing: -0.06em;
  line-height: 1;
  margin: 0 0 18px;
}

.section-head p,
.split-section p {
  color: var(--muted);
  font-size: 18px;
  margin: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card,
.panel,
.preview-form,
.api-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.feature-card {
  padding: 28px;
}

.feature-card h3 {
  font-size: 24px;
  margin: 0 0 12px;
}

.feature-card p {
  color: var(--muted);
  margin: 0 0 24px;
}

.feature-card span {
  color: var(--good);
  font-size: 13px;
  font-weight: 800;
}

.split-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
  align-items: center;
  border-top: 1px solid var(--line);
}

.panel {
  padding: 28px;
}

.row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.row:last-child {
  border-bottom: 0;
}

.row span {
  color: var(--muted);
}

.api-list {
  display: grid;
  gap: 14px;
}

.api-item {
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 18px;
  align-items: center;
}

.api-item span {
  color: var(--good);
  font-weight: 900;
}

.api-item code {
  color: var(--text);
  font-size: 15px;
}

.api-item strong {
  color: var(--muted);
  font-size: 13px;
}

.preview-form {
  padding: 30px;
  display: grid;
  gap: 14px;
}

.preview-form input {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 15px 16px;
  font: inherit;
}

.form-note {
  color: var(--muted);
  font-size: 13px;
}

.footer {
  border-top: 1px solid var(--line);
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  gap: 24px;
}

@media (max-width: 980px) {
  .site-shell {
    width: min(100% - 28px, 1320px);
  }

  .nav-links,
  .nav-actions {
    display: none;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }

  .nav-links.mobile-open,
  .nav-actions.mobile-open {
    display: flex;
    width: 100%;
    flex-wrap: wrap;
    margin-top: 12px;
  }

  .navbar {
    height: auto;
    min-height: 72px;
    flex-wrap: wrap;
    padding: 16px 0;
  }

  .hero,
  .split-section,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding: 54px 0;
  }

  .hero h1 {
    font-size: clamp(44px, 13vw, 70px);
  }

  .hero-visual {
    min-height: 330px;
  }

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

  .footer {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 0;
  }
}