:root {
  --bg: #0f172a;
  --bg-soft: #111827;
  --panel: #ffffff;
  --panel-soft: #f8fafc;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --border: #e2e8f0;
  --white: #ffffff;
  --shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
  --radius: 18px;
  --max: 1120px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--panel-soft);
  line-height: 1.6;
}

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

.site-header {
  background: rgba(15, 23, 42, 0.96);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav-wrap {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  gap: 20px;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.2px;
  color: var(--white);
}

.brand span { color: #93c5fd; }

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.nav a {
  color: #dbeafe;
  font-size: 0.95rem;
}

.nav a.active {
  color: var(--white);
  font-weight: 700;
}

.hero {
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.35), transparent 30%),
    linear-gradient(135deg, #0f172a 0%, #111827 55%, #1e293b 100%);
  color: var(--white);
  padding: 86px 22px;
}

.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.eyebrow {
  color: #93c5fd;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.84rem;
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(2.35rem, 5vw, 4.6rem);
  line-height: 1.04;
  margin: 0 0 22px;
  max-width: 950px;
}

.hero p {
  max-width: 780px;
  color: #dbeafe;
  font-size: 1.18rem;
  margin-bottom: 32px;
}

.cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid var(--accent);
}

.button:hover {
  background: var(--accent-dark);
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  border-color: #bfdbfe;
  color: #bfdbfe;
}

.profile-switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 32px;
}

.profile-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--radius);
  padding: 24px;
}

.profile-card h3 {
  color: var(--white);
  margin-top: 0;
}

.profile-card p {
  color: #dbeafe;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 64px 22px;
}

.section h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.15;
  margin: 0 0 14px;
}

.section-intro {
  color: var(--muted);
  max-width: 760px;
  font-size: 1.05rem;
  margin-bottom: 30px;
}

.grid {
  display: grid;
  gap: 22px;
}

.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin-top: 0;
  font-size: 1.35rem;
}

.card p { color: var(--muted); }

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.badge {
  background: #e0f2fe;
  color: #075985;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.85rem;
  font-weight: 700;
}

.feature {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: center;
}

.feature-panel,
.academic-highlight {
  background: var(--bg);
  color: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  min-height: 250px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature-panel p,
.academic-highlight p,
.academic-highlight li {
  color: #cbd5e1;
}

.list { padding-left: 20px; }
.list li { margin-bottom: 8px; }

.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.kpi {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.kpi strong {
  display: block;
  font-size: 1.6rem;
  color: var(--accent);
}

.page-title {
  background: var(--bg);
  color: var(--white);
  padding: 56px 22px;
}

.page-title-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.page-title h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin: 0 0 12px;
}

.page-title p {
  color: #cbd5e1;
  max-width: 760px;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  background: var(--panel);
  border-left: 5px solid var(--accent);
  border-radius: 14px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.footer {
  background: var(--bg);
  color: #cbd5e1;
  padding: 32px 22px;
  margin-top: 42px;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer a { color: #bfdbfe; }

.contact-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
}

.placeholder {
  border: 2px dashed #94a3b8;
  border-radius: var(--radius);
  min-height: 210px;
  display: grid;
  place-items: center;
  color: #64748b;
  background: #f8fafc;
  font-weight: 700;
  text-align: center;
  padding: 20px;
}

.callout {
  background: #eff6ff;
  border-left: 5px solid var(--accent);
  border-radius: 14px;
  padding: 24px;
  margin-top: 24px;
}

code {
  background: #e2e8f0;
  border-radius: 6px;
  padding: 2px 5px;
}

@media (max-width: 850px) {
  .nav-wrap { align-items: flex-start; flex-direction: column; }
  .nav { gap: 12px; }
  .grid.three, .grid.two, .feature, .kpi-row, .profile-switch { grid-template-columns: 1fr; }
  .hero { padding: 64px 22px; }
}