:root {
  --ink: #152126;
  --muted: #5e6d73;
  --line: #d9e2e4;
  --panel: #ffffff;
  --soft: #edf5f4;
  --accent-dark: #075f5b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: #f8fbfb;
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px;
}

.brand { font-weight: 800; letter-spacing: 0; }

.nav-links {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
}

.hero {
  background: linear-gradient(180deg, #eef7f5 0%, #f8fbfb 100%);
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 24px 70px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 800;
  color: var(--accent-dark);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1, h2, h3 { line-height: 1.12; margin: 0; letter-spacing: 0; }
h1 { font-size: clamp(44px, 7vw, 76px); max-width: 900px; }
h2 { font-size: clamp(28px, 4vw, 44px); }

.lead {
  margin: 22px 0 34px;
  font-size: 19px;
  color: var(--muted);
  max-width: 820px;
}

.hero-figure,
.paper-figures figure {
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 18px 45px rgba(15, 58, 64, 0.08);
}

.hero-figure { max-width: 980px; }

.hero-figure img,
.paper-figures img {
  width: 100%;
  height: auto;
  object-fit: contain;
  background: #fff;
}

.section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 72px 24px;
}

.section.band {
  max-width: none;
  background: var(--soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section.band > * {
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
}

.section-head {
  max-width: 800px;
  margin-bottom: 30px;
}

.abstract {
  max-width: 980px;
  margin: -8px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 28px auto 0;
}

.stats div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.stats strong {
  display: block;
  font-size: 34px;
  line-height: 1;
}

.stats span { color: var(--muted); font-size: 14px; }

.paper-figures {
  display: grid;
  gap: 34px;
}

.paper-figures figure { max-width: 1000px; }

figcaption {
  padding: 16px 18px 18px;
  color: var(--muted);
  font-size: 14px;
}

.footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 24px 42px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 860px) {
  .nav { align-items: flex-start; flex-direction: column; }
  .nav-links { flex-wrap: wrap; }
  .stats { grid-template-columns: 1fr; }
  .hero-inner { padding-top: 28px; }
}