.datathon-hero { padding: 2rem 0; }
.datathon-hero-panel {
  padding: clamp(1.5rem, 5vw, 4.5rem);
  border-radius: 24px;
  color: #fff;
  background: radial-gradient(circle at 95% 0, #4369cd 0, transparent 48%), #16328a;
  box-shadow: var(--hero-shadow);
}
.datathon-eyebrow { font-size: .8rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.datathon-hero h1 { max-width: 950px; margin: 1.5rem 0; font-size: clamp(2.2rem, 5vw, 4.5rem); font-weight: 800; line-height: 1.12; letter-spacing: -.04em; }
.datathon-hero h1 span { color: #bcd7ff; }
.datathon-intro { max-width: 600px; margin-bottom: 2rem; font-size: 1.15rem; line-height: 1.8; }
.datathon-register { display: inline-flex; align-items: center; justify-content: center; gap: 1.5rem; padding: 1rem 1.4rem; border-radius: 8px; background: var(--brand); color: #fff; font-weight: 800; }
.datathon-register:hover { background: var(--brand-dark); color: #fff; }
.datathon-hero .datathon-register { background: #fff; color: var(--brand-dark); }
.datathon-hero .datathon-register:hover { background: #e9f0ff; }
.datathon-page a:focus-visible { outline: 3px solid #e09b25; outline-offset: 5px; }
.datathon-facts { display: grid; grid-template-columns: 1fr 1.4fr 1.3fr; gap: 2rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid #ffffff40; }
.datathon-facts span { display: block; margin-bottom: .5rem; color: #cfddff; font-size: .85rem; }
.datathon-facts strong { font-size: .95rem; }
.datathon-copy h2 { margin-bottom: 1.25rem; font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; }
.datathon-copy h3 { margin-top: 2rem; font-size: 1.25rem; font-weight: 800; }
.datathon-copy p, .datathon-card p { line-height: 1.85; }
.datathon-copy a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }
.datathon-source { margin-top: 2rem; color: var(--muted); font-size: .85rem; }
.datathon-card { padding: 2rem; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: var(--shadow); }
.datathon-card h2 { font-size: 1.5rem; font-weight: 800; }
.datathon-card h3 { margin-top: 1.5rem; font-size: 1.15rem; font-weight: 800; }
.datathon-card .datathon-eyebrow { color: var(--brand); }
.datathon-organizers { list-style: none; padding: 0; margin: 1.5rem 0; }
.datathon-organizers a { display: flex; justify-content: space-between; gap: 1rem; padding: .75rem 0; color: var(--brand); font-weight: 700; }
.datathon-organizers a:hover { text-decoration: underline; }
@media (max-width: 767px) {
  .datathon-facts { grid-template-columns: 1fr; gap: 1.25rem; }
  .datathon-card { padding: 1.5rem; }
}