:root {
  --page-bg: #f3efe6;
  --page-bg-accent: #e8eef6;
  --card-bg: rgba(255, 255, 255, 0.92);
  --text: #142235;
  --muted: #506176;
  --line: rgba(20, 34, 53, 0.12);
  --primary: #145c83;
  --primary-strong: #0f4765;
  --shadow: 0 22px 50px rgba(20, 34, 53, 0.08);
  --radius-xl: 28px;
  --radius-lg: 18px;
  --radius-pill: 999px;
  --shell-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  line-height: 1.6;
  background:
    radial-gradient(circle at top left, rgba(20, 92, 131, 0.12), transparent 32%),
    radial-gradient(circle at top right, rgba(104, 142, 190, 0.16), transparent 28%),
    linear-gradient(180deg, var(--page-bg) 0%, var(--page-bg-accent) 100%);
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.site-shell {
  width: min(calc(100% - 2rem), var(--shell-width));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 0 0.2rem;
}

.brand,
.topbar-links a {
  text-decoration: none;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topbar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--muted);
}

.hero {
  text-align: center;
  padding: 5rem 0 3.5rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 0 1rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid rgba(20, 92, 131, 0.18);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.72);
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 14ch;
  margin: 0 auto 1.2rem;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(2.6rem, 6vw, 4.8rem);
  line-height: 1.05;
}

.authors,
.affiliations,
.status-note,
.body-copy,
.figure-caption,
.section-heading p,
.footer {
  color: var(--muted);
}

.authors,
.affiliations {
  margin: 0;
  font-size: 1.02rem;
}

.affiliations {
  margin-top: 0.4rem;
}

.author-separator {
  margin: 0 0.45rem;
  color: rgba(80, 97, 118, 0.45);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.9rem;
  margin: 2rem 0 0.8rem;
}

.button,
.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.84);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 140ms ease,
    box-shadow 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.button:hover,
.copy-button:hover {
  transform: translateY(-1px);
  border-color: rgba(20, 92, 131, 0.24);
  box-shadow: 0 12px 28px rgba(20, 34, 53, 0.1);
}

.button.primary {
  background: var(--primary);
  border-color: transparent;
  color: #ffffff;
}

.button.primary:hover {
  background: var(--primary-strong);
}

.status-note {
  margin: 0.8rem auto 0;
  max-width: 52ch;
  font-size: 0.96rem;
}

.availability-message {
  padding: 0.8rem 1rem;
  border: 1px solid rgba(20, 92, 131, 0.16);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.72);
}

main {
  padding-bottom: 3rem;
}

.content-card {
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.64);
  border-radius: var(--radius-xl);
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}

.section-heading {
  margin-bottom: 1.2rem;
}

.section-heading h2 {
  margin: 0 0 0.25rem;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.section-heading p,
.figure-caption,
.body-copy {
  margin: 0;
}

.teaser-figure {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #ffffff;
}

.main-figure-card .teaser-figure {
  margin-left: -0.35rem;
  margin-right: -0.35rem;
}

.teaser-figure picture {
  display: block;
}

.teaser-image {
  display: block;
  width: 100%;
  height: auto;
}

.figure-caption {
  margin-top: 0.9rem;
}

.body-copy {
  width: 100%;
  max-width: none;
  font-size: 1.04rem;
}

.heading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

pre {
  margin: 0;
  overflow-x: auto;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background: #172331;
  color: #eef4fb;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.95rem;
  line-height: 1.7;
}

.copy-button {
  min-height: 42px;
  padding: 0.6rem 1rem;
}

.copy-button.is-copied {
  background: rgba(20, 92, 131, 0.12);
  color: var(--primary);
  border-color: rgba(20, 92, 131, 0.2);
}

.footer {
  padding: 0 0 2.25rem;
  font-size: 0.96rem;
}

.footer p {
  margin: 0;
}

@media (max-width: 760px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding: 3.8rem 0 2.5rem;
  }

  .content-card {
    padding: 1.2rem;
  }

  .main-figure-card .teaser-figure {
    margin-left: 0;
    margin-right: 0;
  }

  .heading-row {
    align-items: flex-start;
    flex-direction: column;
  }
}