:root {
  --bg: #050816;
  --bg-alt: #0b1020;
  --accent: #3b82f6;
  --accent-soft: #1d4ed8;
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --border: #1f2937;
  --card-bg: #0f172a;
  --danger: #ef4444;
  --radius: 8px;
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.7);
  --max-width: 1080px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background: radial-gradient(circle at top, #1f2937 0, #020617 55%, #000 100%);
  color: var(--text);
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(2, 6, 23, 0.85);
  border-bottom: 1px solid rgba(31, 41, 55, 0.7);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 0%, #60a5fa, #1d4ed8 40%, #020617 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #e5e7eb;
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.4), 0 12px 30px rgba(15, 23, 42, 0.9);
}

.logo-text {
  font-weight: 600;
  letter-spacing: 0.03em;
}

.nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.9rem;
}

.nav a {
  padding: 0.35rem 0.5rem;
  border-radius: 999px;
  color: var(--text-muted);
  transition: color 0.15s ease, background 0.15s ease;
}

.nav a:hover {
  color: var(--text);
  background: rgba(31, 41, 55, 0.7);
}

/* Hero */

.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.3fr);
  gap: 2.5rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 2.4rem;
  line-height: 1.1;
  margin: 0 0 1rem;
}

.hero-text p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.hero-sub {
  font-size: 0.9rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.25rem 0 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.08s ease;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  border-color: rgba(59, 130, 246, 0.7);
  color: #f9fafb;
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.45);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.55);
}

.btn.secondary {
  background: rgba(15, 23, 42, 0.9);
  border-color: rgba(31, 41, 55, 0.9);
  color: var(--text-muted);
}

.btn.secondary:hover {
  background: rgba(15, 23, 42, 1);
  color: var(--text);
}

.btn.full-width {
  width: 100%;
}

.hero-card {
  background: radial-gradient(circle at top left, #1f2937 0, #020617 60%);
  border-radius: 18px;
  padding: 1.5rem 1.4rem;
  border: 1px solid rgba(31, 41, 55, 0.9);
  box-shadow: var(--shadow-soft);
}

.hero-card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

.hero-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-card li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hero-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
}

/* Sections */

.section {
  padding: 2.75rem 0;
}

.section-alt {
  background: rgba(2, 6, 23, 0.85);
}

.section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.6rem;
}

.section-intro {
  margin: 0 0 1.75rem;
  color: var(--text-muted);
  max-width: 640px;
}

/* Grid & cards */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.4rem;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.2rem 1.1rem;
  border: 1px solid rgba(31, 41, 55, 0.9);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.8);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* About */

.about-inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.3fr);
  gap: 2rem;
  align-items: center;
}

.about-inner p {
  color: var(--text-muted);
}

.about-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.fact {
  flex: 1 1 120px;
  background: rgba(15, 23, 42, 0.9);
  border-radius: 14px;
  padding: 0.9rem 0.9rem;
  border: 1px solid rgba(31, 41, 55, 0.9);
}

.fact-number {
  display: block;
  font-size: 1.4rem;
  font-weight: 600;
}

.fact-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Contact */

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.6fr);
  gap: 2rem;
  align-items: flex-start;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  font-size: 0.9rem;
}

.contact-list li {
  margin-bottom: 0.4rem;
  color: var(--text-muted);
}

.contact-form {
  background: rgba(15, 23, 42, 0.95);
  border-radius: 16px;
  padding: 1.4rem 1.3rem;
  border: 1px solid rgba(31, 41, 55, 0.9);
  box-shadow: var(--shadow-soft);
}

.form-row {
  margin-bottom: 0.9rem;
}

.form-row label {
  display: block;
  font-size: 0.8rem;
  margin-bottom: 0.25rem;
  color: var(--text-muted);
}

input,
textarea {
  width: 100%;
  padding: 0.55rem 0.6rem;
  border-radius: 8px;
  border: 1px solid rgba(31, 41, 55, 0.9);
  background: #020617;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.6);
}

/* Footer */

.site-footer {
  border-top: 1px solid rgba(31, 41, 55, 0.9);
  background: #020617;
  padding: 1rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Responsive */

@media (max-width: 900px) {
  .hero-inner,
  .about-inner,
  .contact-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    padding-top: 2.5rem;
  }

  .nav {
    gap: 0.75rem;
    font-size: 0.8rem;
  }
}

@media (max-width: 640px) {
  .hero-text h1 {
    font-size: 1.9rem;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.3rem;
    align-items: flex-start;
  }
}