:root {
  --color-bg: #0b1120;
  --color-bg-alt: #111a2e;
  --color-surface: #16213a;
  --color-border: #22304d;
  --color-text: #e6ebf5;
  --color-text-muted: #9aa7c2;
  --color-primary: #3b82f6;
  --color-primary-hover: #60a5fa;
  --color-accent: #22d3ee;
  --radius: 10px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary-hover);
}

img {
  max-width: 100%;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 17, 32, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

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

.logo img {
  display: block;
  height: 32px;
  width: auto;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  padding: 8px 10px;
  font-size: 1.1rem;
  cursor: pointer;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-text);
}

.main-nav a[aria-current="page"] {
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 4px;
}

/* Hero */
.hero {
  padding: 96px 0 72px;
  text-align: center;
  background: radial-gradient(circle at top, var(--color-bg-alt), var(--color-bg) 65%);
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0 0 16px;
}

.hero .highlight {
  color: var(--color-accent);
}

.hero p {
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0 auto 32px;
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
}

.btn-outline {
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-hover);
}

/* Sections */
section {
  padding: 72px 0;
}

section + section {
  border-top: 1px solid var(--color-border);
}

.section-heading {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-heading h2 {
  font-size: 2rem;
  margin: 0 0 12px;
}

.section-heading p {
  color: var(--color-text-muted);
  margin: 0;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 700;
  display: block;
  margin-bottom: 8px;
}

/* Grid / Cards */
.grid {
  display: grid;
  gap: 24px;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
}

.card .icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.card p {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 0.95rem;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 24px;
  text-align: center;
}

.stats strong {
  display: block;
  font-size: 2rem;
  color: var(--color-accent);
}

.stats span {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Lists */
.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.check-list li {
  padding-left: 28px;
  position: relative;
  margin-bottom: 12px;
  color: var(--color-text-muted);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* CTA band */
.cta-band {
  text-align: center;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.cta-band h2 {
  margin: 0 0 12px;
}

.cta-band p {
  color: var(--color-text-muted);
  margin: 0 0 28px;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 720px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-info .card {
  margin-bottom: 20px;
}

form.contact-form {
  display: grid;
  gap: 16px;
}

.form-group {
  display: grid;
  gap: 6px;
}

label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

input,
textarea {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.95rem;
}

input:focus,
textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

textarea {
  resize: vertical;
  min-height: 140px;
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer a {
  color: var(--color-text-muted);
}

.site-footer a:hover {
  color: var(--color-accent);
}

/* Mobile nav */
@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    display: none;
    width: 100%;
  }

  .main-nav.open {
    display: block;
  }

  .site-header .container {
    flex-wrap: wrap;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 4px;
    padding: 16px 0 8px;
  }

  .main-nav a {
    display: block;
    padding: 10px 0;
  }
}