:root {
  --bg: #0b1020;
  --card: rgba(255, 255, 255, 0.08);
  --text: #e9eefc;
  --muted: rgba(233, 238, 252, 0.75);
  --border: rgba(255, 255, 255, 0.12);
  --accent: #7c5cff;
  --accent2: #00d4ff;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(900px 600px at 20% 10%, rgba(124, 92, 255, 0.25), transparent 60%),
              radial-gradient(900px 600px at 80% 20%, rgba(0, 212, 255, 0.20), transparent 60%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(11, 16, 32, 0.75);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 14px;
}

.logo {
  font-size: 20px;
  letter-spacing: 0.5px;
}

.nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  transition: 0.2s ease;
}

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

.btn {
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.9), rgba(0, 212, 255, 0.55));
  color: white;
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.btn.small {
  padding: 8px 10px;
  font-size: 14px;
}

.btn.outline {
  background: transparent;
}

.hero {
  padding: 70px 0 40px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 22px;
  align-items: center;
}

.title {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
}

.subtitle {
  margin-top: 12px;
  color: var(--muted);
  max-width: 52ch;
}

.actions {
  margin-top: 18px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.section {
  padding: 55px 0;
}

.section.alt {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.section-title {
  font-size: 26px;
  margin-bottom: 18px;
}

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

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.hero-card h3 {
  margin-bottom: 8px;
}

.list {
  margin-top: 10px;
  padding-left: 18px;
  color: var(--muted);
}

.text {
  color: var(--muted);
  max-width: 75ch;
}

.stats {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.stat {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.04);
}

.stat-number {
  font-size: 26px;
  font-weight: 800;
  display: block;
}

.stat-label {
  color: var(--muted);
  font-size: 14px;
}

.form {
  max-width: 700px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}

label {
  display: grid;
  gap: 6px;
  font-weight: 700;
}

input, textarea {
  width: 100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  outline: none;
}

input:focus, textarea:focus {
  border-color: rgba(124, 92, 255, 0.7);
}

.hint {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
}

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

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

.top-link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 700;
}

.top-link:hover {
  color: var(--text);
}

/* Light theme */
body.light {
  --bg: #f7f8ff;
  --card: rgba(0, 0, 0, 0.04);
  --text: #111827;
  --muted: rgba(17, 24, 39, 0.7);
  --border: rgba(0, 0, 0, 0.12);
}

/* Responsive */
@media (max-width: 850px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

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

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

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