:root {
  --bg: #f6f8fc;
  --surface: #ffffff;
  --ink: #1f2a37;
  --muted: #526072;
  --brand: #0052cc;
  --brand-ink: #ffffff;
  --line: #d8e0ea;
  --radius: 18px;
  --shadow: 0 12px 36px rgba(10, 30, 64, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 10%, #d9ebff 0%, transparent 35%),
    radial-gradient(circle at 85% 20%, #e4ffe2 0%, transparent 32%),
    var(--bg);
  line-height: 1.65;
}

a {
  color: var(--brand);
}

.container {
  width: min(1000px, 92vw);
  margin: 0 auto;
}

.hero {
  padding: 80px 0 54px;
}

.hero__content {
  background: linear-gradient(140deg, #ffffff 0%, #f6fbff 70%);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: 42px;
  animation: rise 500ms ease-out;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-size: 0.74rem;
}

h1 {
  margin: 8px 0 0;
  font-size: clamp(2rem, 5vw, 3.1rem);
  line-height: 1.1;
}

.subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  font-weight: 600;
}

.lead {
  margin-top: 22px;
  font-size: 1.07rem;
}

.cta-row {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-block;
  text-decoration: none;
  padding: 9px 15px;
  border-radius: 999px;
  background: var(--brand);
  color: var(--brand-ink);
  font-weight: 600;
  border: 1px solid var(--brand);
}

.button--ghost {
  background: transparent;
  color: var(--brand);
}

.main-grid {
  display: grid;
  gap: 18px;
  margin-bottom: 70px;
}

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

h2 {
  margin: 0 0 10px;
  font-size: 1.34rem;
}

.section-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
}

.muted {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.pub-list {
  margin: 18px 0 0;
  padding-left: 20px;
}

.pub-item + .pub-item {
  margin-top: 18px;
}

.pub-item h3 {
  margin: 0;
  font-size: 1.06rem;
}

.pub-meta,
.pub-cites {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 760px) {
  .hero {
    padding-top: 40px;
  }

  .hero__content,
  section {
    padding: 20px;
  }
}