:root {
  color-scheme: light;
  --ink: #16211f;
  --muted: #5b6b67;
  --line: #d8e2df;
  --teal: #047b72;
  --teal-strong: #005f58;
  --mist: #edf8f6;
  --amber: #fff7e6;
  --paper: #ffffff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: #f7faf9;
}

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

main {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: 78vh;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 32px;
  align-items: center;
  padding: 42px 0 28px;
}

.eyebrow {
  color: var(--teal);
  font-weight: 760;
  text-transform: uppercase;
  font-size: 0.82rem;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  font-size: clamp(2.25rem, 6vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: 0;
  margin: 0 0 18px;
}

.summary {
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.65;
  max-width: 720px;
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 11px 16px;
  font-weight: 700;
  text-decoration: none;
}

.button--primary {
  background: var(--teal);
  color: #fff;
}

.button--secondary {
  border: 1px solid var(--teal);
  color: var(--teal-strong);
  background: #fff;
}

.hero__media {
  margin: 0;
}

.hero__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.hero__media figcaption {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 10px;
}

.notice,
.toc,
.content section,
section.content {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  margin: 20px 0;
}

.notice {
  background: var(--amber);
}

.highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 20px 0;
}

.highlights article {
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

h2 {
  font-size: 1.35rem;
  letter-spacing: 0;
  margin: 0 0 12px;
}

p,
li {
  color: var(--muted);
  line-height: 1.68;
}

.toc ul,
.content ul {
  padding-left: 22px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  margin: 12px 0;
  background: #fff;
}

summary {
  cursor: pointer;
  font-weight: 760;
}

#kaynaklar span {
  color: var(--muted);
  white-space: nowrap;
}

@media (max-width: 820px) {
  main {
    width: min(100% - 24px, 720px);
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 28px;
  }

  .highlights {
    grid-template-columns: 1fr;
  }
}

.academic-hero {
  padding: 42px 0 18px;
}

.academic-content {
  margin-bottom: 48px;
}

.academic-sources {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  border: 0;
  padding: 0;
  background: transparent;
}

.source-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.source-card dl {
  margin: 14px 0;
  display: grid;
  gap: 8px;
}

.source-card dl div {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 12px;
}

.source-card dt {
  color: var(--ink);
  font-weight: 760;
}

.source-card dd {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 820px) {
  .academic-sources {
    grid-template-columns: 1fr;
  }

  .source-card dl div {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}