:root {
  --bg: #0b0e14;
  --bg-alt: #10141d;
  --surface: #161b26;
  --surface-border: #232a3a;
  --text: #e8ecf4;
  --text-dim: #9aa5b8;
  --accent: #4fd8ff;
  --accent-2: #7c6cff;
  --accent-text: #06121a;
  --radius: 14px;
  --max-width: 1120px;
  --shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.6);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fb;
    --bg-alt: #ffffff;
    --surface: #ffffff;
    --surface-border: #e2e7f0;
    --text: #141a26;
    --text-dim: #566078;
    --accent: #0091b8;
    --accent-2: #5b45e0;
    --accent-text: #ffffff;
    --shadow: 0 20px 60px -20px rgba(20, 26, 38, 0.15);
  }
}

* { 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(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { max-width: 100%; display: block; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--surface-border);
}

@media (prefers-color-scheme: light) {
  .site-header { background: rgba(255, 255, 255, 0.85); }
}

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

.brand { display: flex; align-items: center; }
.brand-mark {
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.03em;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand:hover { text-decoration: none; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  color: var(--text-dim);
  font-weight: 500;
  font-size: 0.95rem;
}
.site-nav a:hover, .site-nav a.active { color: var(--text); text-decoration: none; }

.nav-cta {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: var(--accent-text) !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Sections */
main { display: block; }

.section {
  padding: 88px 0;
}
.section-tight { padding: 56px 0; }
.section-alt { background: var(--bg-alt); }

.eyebrow {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

h1, h2, h3 { line-height: 1.15; margin: 0 0 16px; }
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); }
h3 { font-size: 1.2rem; }

p { color: var(--text-dim); margin: 0 0 16px; }
p.lead { font-size: 1.15rem; color: var(--text); }

/* Hero */
.hero {
  padding: 110px 0 90px;
  text-align: center;
}
.hero .wrap { max-width: 780px; }
.hero p.lead { margin: 0 auto 36px; max-width: 620px; }

.btn-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: var(--accent-text);
}
.btn-primary:hover { opacity: 0.92; }
.btn-secondary {
  background: transparent;
  border-color: var(--surface-border);
  color: var(--text);
}
.btn-secondary:hover { border-color: var(--accent); }

/* Cards / grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

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

.card .icon {
  font-size: 1.6rem;
  margin-bottom: 14px;
  display: inline-block;
}

.card h3 { margin-bottom: 8px; }
.card p { margin-bottom: 0; font-size: 0.95rem; }

/* Two-column */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 760px) {
  .split { grid-template-columns: 1fr; }
}

.panel {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

/* Page header (non-home) */
.page-hero {
  padding: 72px 0 48px;
}
.page-hero .eyebrow { margin-bottom: 12px; }
.page-hero p.lead { max-width: 680px; }

/* Lists */
.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li {
  padding-left: 30px;
  position: relative;
  margin-bottom: 14px;
  color: var(--text-dim);
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
@media (max-width: 760px) {
  .contact-grid { grid-template-columns: 1fr; }
}
.contact-item {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 24px;
}
.contact-item .label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.contact-item .value {
  font-size: 1.1rem;
  font-weight: 600;
}

.notice {
  background: var(--surface);
  border: 1px dashed var(--surface-border);
  border-radius: var(--radius);
  padding: 18px 22px;
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--surface-border);
  padding: 48px 0;
  margin-top: 40px;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}
.footer-brand p { margin: 4px 0 0; font-size: 0.85rem; }
.footer-nav { display: flex; gap: 20px; }
.footer-nav a { color: var(--text-dim); font-size: 0.9rem; }
.footer-legal { width: 100%; font-size: 0.8rem; color: var(--text-dim); margin: 16px 0 0; }

/* 404 */
.error-page { text-align: center; padding: 140px 0; }
.error-code {
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 8px;
}

/* Mobile nav */
@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--surface-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 20px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.18s ease, opacity 0.18s ease;
  }
  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .site-nav a { padding: 12px 0; border-bottom: 1px solid var(--surface-border); }
  .nav-cta { margin-top: 12px; text-align: center; }
}