:root {
  --bg: #081120;
  --panel: rgba(255, 255, 255, 0.06);
  --card: #ffffff;
  --text: #0f172a;
  --text-soft: #475569;
  --white: #ffffff;
  --primary: #0ea5a4;
  --primary-dark: #0f766e;
  --border: rgba(15, 23, 42, 0.08);
  --shadow: 0 20px 50px rgba(15, 23, 42, 0.12);
  --radius: 24px;
  --container: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 38%, #ffffff 100%);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(calc(100% - 2rem), var(--container)); margin: 0 auto; }
.section { padding: 88px 0; }
.section-alt { background: linear-gradient(180deg, #f8fafc 0%, #eef8f8 100%); }
.skip-link {
  position: absolute; left: -9999px; top: auto;
}
.skip-link:focus { left: 1rem; top: 1rem; background: #fff; padding: .75rem 1rem; z-index: 99; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(8, 17, 32, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.nav-wrap {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 78px;
}
.brand { display: inline-flex; align-items: center; gap: .85rem; color: var(--white); }
.brand strong { display: block; font-size: 1rem; }
.brand small { color: rgba(255,255,255,.72); display: block; font-size: .78rem; }
.brand-mark {
  width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(135deg, #14b8a6, #2563eb); color: #fff; font-weight: 800;
}
.site-nav { display: flex; align-items: center; gap: 1.25rem; }
.site-nav a { color: rgba(255,255,255,.88); font-weight: 500; }
.site-nav a.active { color: #fff; }
.nav-toggle {
  display: none; border: 0; background: transparent; color: #fff; font-size: 1.6rem;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  background: linear-gradient(135deg, var(--primary), #2563eb);
  color: #fff; border: 0; border-radius: 999px; padding: .95rem 1.35rem; font-weight: 700;
  box-shadow: var(--shadow);
}
.btn:hover { transform: translateY(-1px); }
.btn-secondary {
  background: #fff; color: var(--text);
  border: 1px solid var(--border); box-shadow: none;
}
.btn-light { background: #fff; color: var(--text); }
.btn-sm { padding: .8rem 1rem; }
.hero {
  padding-top: 110px;
  background:
    radial-gradient(circle at top right, rgba(14,165,164,.22), transparent 24%),
    radial-gradient(circle at left top, rgba(37,99,235,.18), transparent 28%),
    linear-gradient(180deg, #081120 0%, #0b1730 100%);
}
.hero-grid, .two-col {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; align-items: center;
}
.hero h1, .page-hero h1 { color: #fff; font-size: clamp(2.4rem, 5vw, 4.6rem); line-height: 1.05; margin: .6rem 0 1rem; }
.page-hero h1 { color: var(--text); font-size: clamp(2rem, 4vw, 3.3rem); }
.lead { font-size: 1.08rem; max-width: 62ch; color: rgba(255,255,255,.82); }
.page-hero .lead { color: var(--text-soft); }
.eyebrow {
  display: inline-flex; background: rgba(255,255,255,.1); color: #dbeafe; padding: .45rem .8rem;
  border-radius: 999px; border: 1px solid rgba(255,255,255,.12); font-size: .85rem; font-weight: 700;
}
.page-hero .eyebrow, .section .eyebrow { color: var(--primary-dark); background: rgba(14,165,164,.08); border-color: rgba(14,165,164,.12); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin: 1.7rem 0; }
.hero-points { display: flex; flex-wrap: wrap; gap: .8rem; }
.hero-points span, .pill {
  background: rgba(255,255,255,.12); color: #fff; padding: .65rem .9rem; border-radius: 999px; border: 1px solid rgba(255,255,255,.12); font-size: .92rem;
}
.card-glass, .card, .mini-card {
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.card-glass {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); padding: 1.6rem; color: #fff;
}
.card-label { text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; opacity: .8; }
.check-list { list-style: none; padding: 0; margin: 1rem 0 0; display: grid; gap: .9rem; }
.check-list li::before { content: '✓'; margin-right: .6rem; color: #5eead4; }
.section-heading { max-width: 760px; margin-bottom: 2rem; }
.section-heading h2, .two-col h2, .cta-wrap h2 { font-size: clamp(1.9rem, 3vw, 3rem); line-height: 1.15; margin: .65rem 0; }
.grid { display: grid; gap: 1.5rem; }
.cards-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card {
  background: #fff; padding: 1.7rem; border: 1px solid var(--border);
}
.course-card h2 { font-size: 1.45rem; margin: .9rem 0; }
.pill-row { display: flex; flex-wrap: wrap; gap: .6rem; }
.pill { background: rgba(14,165,164,.08); color: var(--primary-dark); border: 1px solid rgba(14,165,164,.12); }
.two-col.align-start { align-items: start; }
.stack-cards, .content-list { display: grid; gap: 1rem; }
.mini-card {
  background: #fff; border: 1px solid var(--border); padding: 1.25rem 1.35rem;
}
.cta-band {
  background: linear-gradient(135deg, #0f766e, #1d4ed8); color: #fff;
}
.cta-wrap { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.cta-wrap.boxed { background: #fff; border-radius: var(--radius); padding: 1.6rem 1.8rem; border: 1px solid var(--border); }
.text-link { color: #1d4ed8; font-weight: 700; }
.compact-hero { padding: 72px 0 32px; }
.calendar-table-wrap { overflow-x: auto; }
.calendar-table { width: 100%; border-collapse: collapse; min-width: 760px; }
.calendar-table th, .calendar-table td { text-align: left; padding: 1rem; border-bottom: 1px solid #e2e8f0; }
.calendar-table thead th { font-size: .95rem; color: var(--text-soft); }
.form-card, .contact-panel { padding: 1.7rem; }
.contact-list { list-style: none; padding: 0; margin: 1rem 0 0; display: grid; gap: .85rem; }
.contact-form { display: grid; gap: .9rem; }
.contact-form label { font-weight: 600; }
.contact-form input, .contact-form textarea {
  width: 100%; padding: .9rem 1rem; border-radius: 14px; border: 1px solid #cbd5e1; font: inherit;
}
.alert { border-radius: 16px; padding: 1rem 1.1rem; margin-bottom: 1rem; }
.alert-success { background: #ecfeff; color: #155e75; }
.alert-error { background: #fff1f2; color: #9f1239; }
.site-footer {
  background: #081120; color: rgba(255,255,255,.84); padding-top: 64px;
}
.site-footer h3, .site-footer h4 { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.3fr .8fr .9fr; gap: 2rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .75rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 1rem 0 2rem; margin-top: 2rem; }

@media (max-width: 920px) {
  .hero-grid, .two-col, .cards-3, .footer-grid { grid-template-columns: 1fr; }
  .site-nav {
    position: absolute; inset: 78px 1rem auto 1rem; flex-direction: column; align-items: stretch;
    background: rgba(8, 17, 32, 0.96); padding: 1rem; border-radius: 20px; display: none;
  }
  .site-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .cta-wrap { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .section { padding: 68px 0; }
  .hero { padding-top: 92px; }
  .hero h1, .page-hero h1 { font-size: 2.3rem; }
  .container { width: min(calc(100% - 1.25rem), var(--container)); }
  .card, .card-glass, .mini-card, .cta-wrap.boxed { border-radius: 20px; }
}