/* HNHOT topic-interest route. */
/* <!-- VISUAL-TODO --> */

.topic-browser {
  display: grid;
  margin-top: 16px;
  grid-template-columns: 214px minmax(0, 1fr);
  align-items: start;
  gap: 18px;
}

.topic-browser > nav {
  display: grid;
  position: sticky;
  top: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
}

.topic-browser > nav button {
  display: grid;
  min-height: 50px;
  padding: 11px 14px;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  border: 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.topic-browser > nav button:last-child { border-bottom: 0; }
.topic-browser > nav button:hover { color: var(--ink); background: var(--accent-soft); }
.topic-browser > nav button.active {
  color: var(--ink);
  background: var(--accent-soft);
  box-shadow: inset 3px 0 0 var(--accent);
}
.topic-browser > nav strong { overflow-wrap: anywhere; font-size: 12px; }
.topic-browser > nav span { color: var(--muted); font-size: 10px; }

.topic-browser-panel {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
}

.topic-browser-panel > header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
}

.topic-browser-panel > header h2 {
  margin: 5px 0 0;
  font: 700 28px/1.25 Georgia, "Noto Serif CJK SC", serif;
}

.topic-browser-panel > header > span {
  color: var(--muted);
  font-size: 10px;
  white-space: nowrap;
}

.topic-panel-definition {
  max-width: 720px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.topic-interest-layout {
  display: grid;
  margin-top: 22px;
  grid-template-columns: minmax(290px, .85fr) minmax(330px, 1.15fr);
  align-items: stretch;
  gap: 16px;
}

.topic-interest-picker,
.topic-interest-map {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: color-mix(in srgb, var(--paper) 94%, var(--accent) 6%);
}

.topic-interest-picker > header h3,
.topic-interest-map > header h3 {
  margin: 4px 0 0;
  font: 700 18px/1.4 Georgia, "Noto Serif CJK SC", serif;
}

.topic-interest-grid {
  display: grid;
  margin-top: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.topic-interest-card {
  display: grid;
  min-height: 112px;
  padding: 12px;
  align-content: start;
  gap: 5px;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  color: var(--ink);
  background: var(--paper);
  text-align: left;
  cursor: pointer;
}

.topic-interest-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.topic-interest-card.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 45%, transparent);
}

.topic-interest-card-index {
  color: var(--accent);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .08em;
}

.topic-interest-card strong { font-size: 12px; line-height: 1.45; }
.topic-interest-card small { color: var(--muted); font-size: 9px; line-height: 1.55; }

.topic-interest-map > header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
}

.topic-interest-map > header p {
  max-width: 142px;
  margin: 0;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.5;
  text-align: right;
}

.topic-constellation {
  position: relative;
  height: 360px;
  margin-top: 8px;
  overflow: hidden;
}

.topic-ray-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.topic-ray {
  stroke: var(--line);
  opacity: .72;
}

.topic-ray.is-shared {
  stroke: var(--accent);
  opacity: .9;
}

.topic-constellation-node {
  display: grid;
  position: absolute;
  z-index: 1;
  width: 104px;
  min-height: 58px;
  padding: 8px 9px;
  place-content: center;
  gap: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: var(--paper);
  text-align: center;
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: left .34s ease, top .34s ease, width .2s ease, min-height .2s ease, background .2s ease;
}

.topic-constellation-node:hover { border-color: var(--accent); }
.topic-constellation-node span { color: var(--muted); font-size: 8px; }
.topic-constellation-node strong { font-size: 10px; line-height: 1.35; }
.topic-constellation-node.is-center {
  width: 132px;
  min-height: 78px;
  border-color: var(--accent);
  color: var(--on-accent);
  background: var(--accent);
  box-shadow: 0 12px 30px color-mix(in srgb, var(--accent) 25%, transparent);
}
.topic-constellation-node.is-center span { color: var(--on-accent-muted); }

.topic-map-caption {
  min-height: 34px;
  margin: 2px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 9px;
  line-height: 1.55;
}

.topic-panel-reports {
  margin-top: 24px;
  scroll-margin-top: 20px;
}

.topic-report-tools {
  display: flex;
  min-height: 58px;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.topic-report-tools h3 {
  margin: 4px 0 13px;
  font: 700 18px/1.4 Georgia, "Noto Serif CJK SC", serif;
}

.topic-report-tools .site-search {
  width: min(300px, 48%);
  height: 36px;
  margin-bottom: 10px;
}

.topic-panel-reports ul { margin: 0; padding: 0; list-style: none; }
.topic-panel-reports li {
  display: grid;
  min-height: 54px;
  padding: 15px 0;
  grid-template-columns: 82px minmax(0, 1fr);
  align-items: start;
  gap: 14px;
  border-bottom: 1px solid var(--line-soft);
}
.topic-panel-reports time { color: var(--muted); font-size: 9px; }
.topic-panel-reports a { display: grid; gap: 3px; }
.topic-panel-reports strong {
  overflow-wrap: anywhere;
  font: 700 14px/1.48 Georgia, "Noto Serif CJK SC", serif;
}
.topic-report p { margin: 5px 0 0; color: var(--muted); font-size: 11px; line-height: 1.65; }
.topic-report-tags { display: flex; margin-top: 7px; flex-wrap: wrap; gap: 5px; }
.topic-report-tags span {
  padding: 2px 6px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  color: var(--muted);
  font-size: 9px;
}

.topic-detail-page .page-header { margin-bottom: 0; }
.topic-detail-intro {
  margin-top: 18px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
}
.topic-detail-intro p { max-width: 720px; margin: 0; font-size: 14px; line-height: 1.75; }
.topic-related { margin-top: 24px; }
.topic-related h2 { margin: 5px 0 12px; font: 700 21px/1.35 Georgia, "Noto Serif CJK SC", serif; }
.topic-related > div { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; }
.topic-related-card {
  display: grid;
  min-height: 112px;
  padding: 13px;
  align-content: start;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
}
.topic-related-card:hover { border-color: var(--accent); }
.topic-related-card span { color: var(--accent); font-size: 9px; font-weight: 800; }
.topic-related-card strong { font-size: 12px; }
.topic-related-card small { color: var(--muted); font-size: 9px; line-height: 1.55; }

@media (max-width: 1080px) {
  .topic-interest-layout { grid-template-columns: 1fr; }
  .topic-interest-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .topic-interest-card { min-height: 102px; }
}

@media (max-width: 760px) {
  .topics-page .explore-page-header { padding-bottom: 0; border-bottom: 0; }
  .topics-page .explore-page-header .eyebrow,
  .topics-page .explore-page-header .explore-stats { display: none; }
  .topics-page .explore-page-header h1 { margin: 0; font-size: 30px; }
  .topics-page .explore-section-heading { margin-top: 22px; }
  .topic-browser { display: block; margin-top: 18px; }
  .topic-browser > nav {
    display: flex;
    position: static;
    padding: 0 0 12px;
    overflow-x: auto;
    gap: 7px;
    border: 0;
    border-radius: 0;
    background: transparent;
    scrollbar-width: none;
  }
  .topic-browser > nav::-webkit-scrollbar { display: none; }
  .topic-browser > nav button {
    min-height: 44px;
    padding: 8px 11px;
    grid-template-columns: auto auto;
    flex: 0 0 auto;
    gap: 6px;
    border: 1px solid var(--line);
    border-radius: 999px;
  }
  .topic-browser > nav button:last-child { border-bottom: 1px solid var(--line); }
  .topic-browser > nav button.active {
    border-color: var(--accent);
    color: var(--on-accent);
    background: var(--accent);
    box-shadow: none;
  }
  .topic-browser > nav button.active span { color: var(--on-accent-muted); }
  .topic-browser-panel { padding: 17px; }
  .topic-browser-panel > header { align-items: flex-start; flex-direction: column; gap: 8px; }
  .topic-browser-panel > header h2 { font-size: 23px; }
  .topic-interest-picker,
  .topic-interest-map { padding: 14px; }
  .topic-interest-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .topic-interest-card { min-height: 112px; }
  .topic-constellation { height: 330px; }
  .topic-constellation-node { width: 88px; min-height: 54px; padding: 7px; }
  .topic-constellation-node strong { font-size: 9px; }
  .topic-constellation-node.is-center { width: 112px; min-height: 70px; }
  .topic-interest-map > header p { display: none; }
  .topic-report-tools { align-items: stretch; flex-direction: column; gap: 0; }
  .topic-report-tools .site-search { width: 100%; margin: 0 0 12px; }
  .topic-panel-reports li { grid-template-columns: 72px minmax(0, 1fr); gap: 10px; }
  .topic-related > div { grid-template-columns: 1fr; }
  .topic-related-card { min-height: 96px; }
}

@media (prefers-reduced-motion: reduce) {
  .topic-interest-card,
  .topic-constellation-node { transition: none; }
}