:root {
  --bg: #0c1017;
  --panel: #111826;
  --panel-2: #0f1623;
  --text: #e8edf7;
  --muted: #9cadc9;
  --line: #253049;
  --accent: #84a8ff;
  --accent-strong: #a6beff;
  --success-bg: #0f2c1f;
  --success-text: #9fd9b8;
  --error-bg: #35191c;
  --error-text: #f7b1b8;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(1200px 600px at 50% -200px, #1b2740 0%, var(--bg) 60%);
  color: var(--text);
  line-height: 1.6;
}

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

.container { width: min(1080px, 92%); margin: 0 auto; }
.narrow { width: min(760px, 100%); }
.section { padding: 4rem 0; }
.muted { background: linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.02)); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 14, 21, 0.92);
  backdrop-filter: blur(6px);
}
.nav-wrap { display: flex; justify-content: space-between; align-items: center; padding: 0.9rem 0; }
.brand { font-weight: 700; letter-spacing: 0.02em; color: #fff; }
nav a { margin-left: 1rem; color: var(--muted); }

.hero h1 { font-size: clamp(2rem, 6vw, 3.5rem); line-height: 1.1; margin: 0.5rem 0 1rem; }
.eyebrow { color: var(--accent-strong); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.1em; }
.lead { color: #c9d5ec; font-size: 1.1rem; }
.lead.small { font-size: 1rem; margin-top: 1.2rem; }
.research-paper-link { margin-top: 1rem; }

.grid-2 { display: grid; grid-template-columns: 1.3fr 1fr; gap: 1.25rem; }
.timescale-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; margin-top: 1rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.2rem;
}
.card ul { margin: 0.5rem 0 0; padding-left: 1.2rem; color: var(--muted); }

.btn {
  display: inline-block;
  padding: 0.62rem 1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  font-weight: 500;
}
.btn-primary {
  background: linear-gradient(120deg, #4f79f3, #6089ff);
  border: none;
  color: #fff;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.2rem; }

.application-form {
  margin-top: 1.25rem;
  display: grid;
  gap: 0.45rem;
}
.application-form input,
.application-form textarea,
.application-form select {
  width: 100%;
  border: 1px solid #2a3550;
  background: var(--panel-2);
  color: var(--text);
  border-radius: 10px;
  padding: 0.68rem 0.75rem;
  font: inherit;
  margin-bottom: 0.65rem;
}
.errorlist { list-style: none; margin: -0.25rem 0 0.6rem; padding: 0; color: #f0a3ab; font-size: 0.9rem; }
.alert {
  border: 1px solid;
  border-radius: 10px;
  padding: 0.75rem 0.95rem;
  margin: 0.8rem 0;
}
.alert.success { background: var(--success-bg); color: var(--success-text); border-color: #315c47; }
.alert.error { background: var(--error-bg); color: var(--error-text); border-color: #6f343a; }

.site-footer { border-top: 1px solid var(--line); }
.footer-wrap { padding: 1.3rem 0 2rem; color: var(--muted); font-size: 0.93rem; }

@media (max-width: 860px) {
  .grid-2,
  .timescale-grid { grid-template-columns: 1fr; }
  .section { padding: 3.1rem 0; }
}