:root {
  --bg: #080b12;
  --bg-soft: #101624;
  --card: #151c2c;
  --text: #eef3ff;
  --muted: #aab6cf;
  --line: rgba(255,255,255,0.1);
  --accent: #6ae4ff;
  --accent-2: #8b7dff;
  --danger: #ff6b6b;
  --ok: #69db7c;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(8, 11, 18, 0.82);
  border-bottom: 1px solid var(--line);
}

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

.brand {
  font-weight: 800;
  font-size: 1.45rem;
  letter-spacing: 0.03em;
}

nav {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}

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

.hero {
  padding: 96px 0 80px;
  background:
    radial-gradient(circle at top left, rgba(106, 228, 255, 0.18), transparent 30%),
    radial-gradient(circle at bottom right, rgba(139, 125, 255, 0.18), transparent 35%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 40px;
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

h1, h2, h3, p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 1.05;
  margin-bottom: 24px;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin-bottom: 16px;
}

.hero-text,
.section-intro,
.section p {
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.btn {
  border: 0;
  border-radius: 999px;
  padding: 13px 20px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn.primary {
  color: #051018;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.btn.secondary {
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
}

.hero-card,
.card,
.form,
.feature-list > div {
  background: rgba(21, 28, 44, 0.9);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

.hero-card {
  padding: 28px;
}

.hero-card ul {
  padding-left: 20px;
  color: var(--muted);
}

.section {
  padding: 80px 0;
}

.section.alt {
  background: var(--bg-soft);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.card {
  padding: 24px;
}

.card h3 {
  margin-bottom: 10px;
}

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

.loading {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: start;
}

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

.feature-list > div {
  padding: 20px;
}

.feature-list strong {
  display: block;
  margin-bottom: 4px;
}

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

.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 40px;
}

.form {
  padding: 28px;
  display: grid;
  gap: 18px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #0b101b;
  color: var(--text);
  border-radius: 14px;
  padding: 13px 14px;
  font: inherit;
}

input:focus,
textarea:focus {
  outline: 2px solid rgba(106, 228, 255, 0.35);
  border-color: rgba(106, 228, 255, 0.6);
}

.form-status {
  margin: 0;
  min-height: 24px;
}

.form-status.ok {
  color: var(--ok);
}

.form-status.error {
  color: var(--danger);
}

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

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

@media (max-width: 820px) {
  .hero-grid,
  .split,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  nav {
    display: none;
  }

  .footer-content {
    flex-direction: column;
  }
}