:root {
  --bg: #f6f5f1;
  --bg-soft: #eeece4;
  --paper: #fffdfa;
  --ink: #172127;
  --ink-soft: #4f5d66;
  --line: #d8d4c8;
  --accent: #0e7a6a;
  --accent-strong: #0a5d53;
  --warm: #ba6b28;
  --shadow: 0 14px 36px rgba(23, 33, 39, 0.12);
  --radius: 18px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 15% 10%, #f2f0e8 0%, var(--bg) 38%),
    radial-gradient(circle at 85% 0%, #f3e9dd 0%, var(--bg) 30%),
    var(--bg);
  line-height: 1.65;
}

.ambient-bg {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(23, 33, 39, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 33, 39, 0.02) 1px, transparent 1px);
  background-size: 28px 28px;
  z-index: -1;
  pointer-events: none;
}

.topbar {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(246, 245, 241, 0.86);
  border-bottom: 1px solid rgba(23, 33, 39, 0.08);
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 5vw;
}

.brand {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  box-shadow: 0 5px 14px rgba(14, 122, 106, 0.22);
  flex: 0 0 auto;
}

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.92rem;
}

.nav a:hover {
  color: var(--accent-strong);
}

main {
  width: min(var(--max-width), 92vw);
  margin: 0 auto;
  padding: 28px 0 60px;
}

.hero {
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  background: linear-gradient(140deg, rgba(255, 253, 250, 0.95) 0%, rgba(255, 249, 241, 0.92) 100%);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: var(--accent-strong);
  font-weight: 700;
}

h1,
h2,
h3 {
  font-family: "Cormorant Garamond", serif;
  margin-top: 0;
  line-height: 1.2;
}

h1 {
  margin: 12px 0 14px;
  font-size: clamp(2rem, 4.4vw, 3.35rem);
  max-width: 920px;
}

.author-block {
  max-width: 1080px;
  margin: 6px 0 16px;
}

.author-line {
  margin: 0 0 8px;
  font-size: clamp(1rem, 1.7vw, 1.28rem);
  font-weight: 700;
  line-height: 1.45;
}

.author-line sup,
.affiliation-list sup {
  font-size: 0.72em;
  vertical-align: super;
  margin-left: 1px;
}

.affiliation-list {
  margin: 0;
  color: var(--ink);
  font-size: 0.96rem;
  line-height: 1.45;
}

.affiliation-list p {
  margin: 0;
}

.author-note {
  margin: 10px 0 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.hero-text {
  max-width: 860px;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.hero-actions {
  margin-top: 22px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(14, 122, 106, 0.28);
}

.btn-secondary {
  color: var(--ink);
  border: 1px solid rgba(23, 33, 39, 0.25);
  background: rgba(255, 255, 255, 0.8);
}

.btn-disabled {
  color: rgba(23, 33, 39, 0.56);
  border: 1px dashed rgba(23, 33, 39, 0.25);
  background: rgba(255, 255, 255, 0.7);
  cursor: not-allowed;
}

.btn-disabled:hover {
  transform: none;
}

.impact-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.impact-card {
  border: 1px solid rgba(23, 33, 39, 0.11);
  border-radius: var(--radius);
  padding: 16px;
  background: var(--paper);
}

.impact-card h3 {
  margin-bottom: 8px;
  font-size: 1.3rem;
}

.impact-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.58;
}

.section {
  margin-top: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 253, 250, 0.84);
  padding: 26px;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 14px;
}

.section h2 {
  margin: 0;
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
}

.media-grid,
.method-grid {
  display: grid;
  gap: 16px;
}

.media-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.media-card {
  overflow: hidden;
  border: 1px solid rgba(23, 33, 39, 0.13);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: 0 10px 28px rgba(23, 33, 39, 0.1);
}

.media-card img {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
  background: #f7f7f4;
}

.media-meta {
  padding: 12px 14px 14px;
}

.media-meta h3 {
  margin-bottom: 6px;
  font-size: 1.28rem;
}

.media-meta p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.figure-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.figure-panel {
  border: 1px solid rgba(23, 33, 39, 0.13);
  border-radius: 16px;
  padding: 18px;
  background: var(--paper);
  box-shadow: 0 10px 28px rgba(23, 33, 39, 0.08);
}

.figure-panel h3 {
  margin-bottom: 14px;
  font-size: clamp(1.45rem, 2.1vw, 1.95rem);
}

.figure-full-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 1px solid rgba(23, 33, 39, 0.12);
  background: #fff;
}

.figure-caption {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.figure-caption p {
  margin: 0 0 10px;
}

.figure-caption p:last-child {
  margin-bottom: 0;
}

.method-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.method-grid article {
  border-left: 3px solid var(--warm);
  padding: 8px 0 8px 14px;
}

.method-grid h3 {
  margin-bottom: 8px;
  font-size: 1.2rem;
}

.method-grid p {
  margin: 0;
  color: var(--ink-soft);
}

.citation-intro {
  margin: 0 0 16px;
  color: var(--ink-soft);
}

.resource-links {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}

.resource-links p {
  margin: 0;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.resource-links span {
  min-width: 92px;
  color: var(--ink);
  font-weight: 700;
}

.citation a {
  color: var(--accent-strong);
  font-weight: 600;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 2px;
}

.citation a:hover {
  color: var(--accent);
}

.citation-block {
  margin-top: 18px;
  border: 1px solid rgba(23, 33, 39, 0.12);
  border-radius: 14px;
  background: var(--paper);
  padding: 16px;
}

.citation-block h3 {
  margin-bottom: 8px;
  font-size: 1.24rem;
}

.citation-text {
  margin: 0;
  color: var(--ink-soft);
}

.citation pre {
  margin: 0;
  overflow-x: auto;
  border-radius: 10px;
  background: #f1efe8;
  border: 1px solid rgba(23, 33, 39, 0.1);
  padding: 14px;
  color: var(--ink);
  font-size: 0.9rem;
  line-height: 1.55;
}

.citation code {
  font-family: "IBM Plex Mono", Consolas, "Liberation Mono", monospace;
}

.footer {
  border-top: 1px solid rgba(23, 33, 39, 0.1);
  text-align: center;
  padding: 16px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
}

.reveal.in {
  animation: rise 0.75s ease forwards;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1024px) {
  .impact-grid,
  .media-grid,
  .method-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .topbar {
    padding: 10px 4vw;
    gap: 10px;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    gap: 12px;
  }

  .hero,
  .section {
    padding: 18px;
  }

  .impact-grid,
  .media-grid,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .media-card img {
    height: auto;
  }

  .figure-panel {
    padding: 14px;
  }

  .figure-caption {
    font-size: 0.95rem;
  }

  .resource-links p {
    display: block;
  }

  .resource-links span {
    display: block;
    min-width: 0;
  }

  .citation-block {
    padding: 14px;
  }

  .citation pre {
    font-size: 0.82rem;
  }
}