:root {
  color-scheme: light;
  --bg: #f7f4ee;
  --paper: #fffdf8;
  --ink: #202124;
  --muted: #64615b;
  --line: #ddd6ca;
  --accent: #176b87;
  --accent-strong: #0d4b60;
  --leaf: #587a45;
  --rose: #a84654;
  --shadow: 0 18px 45px rgba(39, 37, 32, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(23, 107, 135, 0.08), rgba(247, 244, 238, 0) 320px),
    var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  min-height: 42px;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.homepage-link {
  color: var(--accent-strong);
  font-weight: 700;
  text-decoration: none;
}

.homepage-link:hover {
  text-decoration: underline;
}

.academic-link {
  display: inline-block;
  margin-top: 8px;
  color: var(--accent-strong);
  font-weight: 700;
  text-decoration: none;
}

.academic-link:hover {
  text-decoration: underline;
}

.count-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 6px 12px;
  white-space: nowrap;
}

.hero {
  padding: 28px 0 40px;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.7rem, 7vw, 6.5rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero p {
  max-width: 670px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.profile {
  display: grid;
  grid-template-columns: minmax(340px, 0.75fr) minmax(0, 1fr);
  gap: 24px 38px;
  padding: 24px 0 28px;
  border-bottom: 1px solid var(--line);
}

.profile-intro {
  display: grid;
  grid-template-columns: 144px minmax(0, 1fr);
  align-items: center;
  gap: 20px;
}

.profile-photo {
  width: 144px;
  height: 144px;
  border: 1px solid var(--line);
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(39, 37, 32, 0.12);
}

.profile h2 {
  margin: 0;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  line-height: 1.15;
  letter-spacing: 0;
}

.profile-kicker {
  margin: 8px 0 0;
  color: var(--accent-strong);
  font-weight: 750;
}

.profile p {
  margin: 0;
  color: var(--muted);
}

.profile-copy {
  display: grid;
  gap: 12px;
}

.controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 16px;
  padding: 28px 0 18px;
}

.search-wrap,
.select-wrap {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  padding: 10px 12px;
  outline: none;
}

input:focus,
select:focus,
.topic-button:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(23, 107, 135, 0.16);
}

.topic-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 18px;
}

.topic-button {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.78);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 0.92rem;
  padding: 7px 12px;
}

.topic-button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.results-summary {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 6px 0 20px;
}

.topic-group {
  margin: 0 0 36px;
}

.topic-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
  margin-bottom: 14px;
}

.topic-heading h2 {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2.15rem);
  letter-spacing: 0;
}

.topic-heading span {
  color: var(--muted);
  white-space: nowrap;
}

.post-list {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.post-card {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  padding: 15px 18px 16px;
}

.post-card:last-child {
  border-bottom: 0;
}

.post-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

.post-title {
  margin: 0;
  font-size: 1.08rem;
  letter-spacing: 0;
  line-height: 1.35;
}

.question-link {
  color: var(--accent-strong);
  font-weight: 750;
}

.post-date {
  color: var(--muted);
  flex: 0 0 auto;
  font-size: 0.92rem;
}

.post-text {
  margin: 4px 0 0;
  color: #343434;
  font-size: 0.96rem;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.9rem;
}

.topic-tag {
  border-left: 3px solid var(--leaf);
  padding-left: 8px;
}

.empty {
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  padding: 24px;
}

.footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  margin-top: 34px;
  padding: 24px 0 38px;
}

.footer p {
  margin: 0;
}

@media (max-width: 720px) {
  .site-header,
  main,
  .footer {
    width: min(100% - 24px, 1120px);
  }

  .hero {
    padding: 22px 0 30px;
  }

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

  .profile-intro {
    grid-template-columns: 112px minmax(0, 1fr);
  }

  .profile-photo {
    width: 112px;
    height: 112px;
  }

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

  .topic-heading,
  .post-header {
    display: grid;
    gap: 4px;
  }

  .post-card {
    padding: 14px;
  }
}