@font-face {
  font-family: Bricolage;
  src: url('/assets/bricolage.woff2') format('woff2');
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: Newsreader;
  src: url('/assets/newsreader.woff2') format('woff2');
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

body:has(.concept-index) {
  --sans: Bricolage, Arial, sans-serif;
  --serif: Newsreader, Georgia, serif;
  --index-navy: #283081;
  --index-blue: #0f75bc;
  --index-ink: #20243b;
  --index-muted: #51566a;
  --index-line: #d9dce2;
  --index-paper: #f5f5f2;
  --index-white: #fff;
  --index-rail-width: 218px;
  background: var(--index-paper);
  color: var(--index-ink);
  font-family: var(--sans);
  line-height: 1.55;
  caret-color: var(--index-blue);
  accent-color: var(--index-blue);
}
body:has(.concept-index) *,
body:has(.concept-index) *::before,
body:has(.concept-index) *::after { box-sizing: border-box; }
body:has(.concept-index) ::selection { background: #d5eafa; color: #18234a; }
body:has(.concept-index) :focus-visible { outline: 3px solid var(--index-blue); outline-offset: 3px; }
body:has(.concept-index) a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .17em; }
body:has(.concept-index) a:hover { color: var(--index-blue); }
body:has(.concept-index) img { display: block; max-width: 100%; height: auto; }
body:has(.concept-index) .sr-only {
  position: absolute !important; width: 1px !important; height: 1px !important;
  padding: 0 !important; margin: -1px !important; overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important;
}
body:has(.concept-index) ::-webkit-scrollbar { width: 12px; height: 12px; }
body:has(.concept-index) ::-webkit-scrollbar-track { background: #e9eaf0; }
body:has(.concept-index) ::-webkit-scrollbar-thumb { background: #747ba8; border: 3px solid #e9eaf0; border-radius: 8px; }

/* The inherited shell contributes its existing, editable banner. The identity
   and horizontal menu move into the Index rail below. */
body:has(.concept-index) { position: relative; }
.concept-index, .index-footer {
  --index-main-width: 1320px;
  display: grid;
  grid-template-columns: var(--index-rail-width) minmax(0, 1fr);
  gap: clamp(30px, 4vw, 62px);
  width: min(100% - 64px, 1600px);
  max-width: 1600px;
  margin: 0 auto;
  padding: 18px 0 40px;
  color: var(--index-ink);
}
.concept-index h1,
.concept-index h2,
.concept-index h3,
.concept-index p { margin-top: 0; }
.concept-index h1,
.concept-index h2,
.concept-index h3 { font-family: var(--serif); font-weight: 550; letter-spacing: -.025em; }
.concept-index .index-rail { position: sticky; top: 18px; align-self: start; min-width: 0; max-height: calc(100vh - 36px); overflow: auto; scrollbar-color: #747ba8 #e9eaf0; scrollbar-width: thin; }
.concept-index .index-skip { position: absolute; z-index: 10; left: 10px; top: 10px; padding: 9px 12px; transform: translateY(-160%); background: var(--index-navy); color: #fff; font-size: 12px; font-weight: 700; }
.concept-index .index-skip:focus { transform: translateY(0); }
.concept-index .index-brand { display: block; width: 185px; margin: 0 0 31px; }
.concept-index .index-brand img { width: 100%; height: auto; }
.concept-index .index-drawer { display: none; }
.concept-index .index-nav { display: grid; gap: 0; border-top: 1px solid var(--index-line); }
.concept-index .index-nav a {
  display: block; padding: 11px 3px; border-bottom: 1px solid var(--index-line);
  color: var(--index-ink); font-size: 13px; font-weight: 600; text-decoration: none;
}
.concept-index .index-nav a:first-child { color: var(--index-blue); }
.concept-index .index-nav a:hover { padding-left: 9px; color: var(--index-blue); }
.concept-index .index-search { margin: 25px 0 27px; }
.concept-index .index-search label { display: block; margin-bottom: 7px; color: var(--index-muted); font-size: 11px; font-weight: 650; }
.concept-index .index-search > div { display: flex; align-items: stretch; border-bottom: 1px solid var(--index-navy); }
.concept-index .index-search input { min-width: 0; width: 100%; min-height: 39px; border: 0; border-radius: 0; padding: 7px 2px; background: transparent; color: var(--index-ink); font: 13px var(--sans); }
.concept-index .index-search input::placeholder { color: #5c6174; opacity: 1; }
.concept-index .index-search button { min-width: 40px; border: 0; background: var(--index-navy); color: #fff; font: 600 18px var(--sans); cursor: pointer; }
.concept-index .index-taxonomy h2 { margin: 0 0 8px; color: var(--index-navy); font: 600 17px/1.25 var(--serif); }
.concept-index .index-taxonomy a { display: block; padding: 5px 0; color: var(--index-muted); font-size: 11px; line-height: 1.35; text-decoration: none; }
.concept-index .index-taxonomy a:hover { color: var(--index-blue); text-decoration: underline; }
.concept-index .index-main { min-width: 0; max-width: var(--index-main-width); margin: 0; padding: 0; background: transparent; }
.concept-index .index-intro { padding: 0 0 23px; border-bottom: 1px solid var(--index-line); }
.concept-index .index-intro .ad-home_top { width: 100%; max-width: 728px; margin: 0 0 22px; padding: 0; text-align: left; }
.concept-index .index-intro .ad-label { display: block; margin: 0 0 3px; color: var(--index-muted); font: 600 9px/1.3 var(--sans); letter-spacing: .08em; text-transform: uppercase; }
.concept-index .index-intro .ad-home_top img { display: block; width: min(728px, 100%); max-width: 100%; max-height: none; height: auto; margin: 0; object-fit: contain; }
.concept-index .index-intro > p,
.concept-index .index-section-heading > div > p,
.concept-index .index-headlines header > p,
.concept-index .index-nearby-heading > p {
  margin: 0 0 6px; color: var(--index-blue); font-size: 10px; font-weight: 700; letter-spacing: .085em; line-height: 1.4; text-transform: uppercase;
}
.concept-index .index-intro h1 { max-width: 14ch; margin: 0; color: var(--index-navy); font-size: clamp(43px, 5.8vw, 78px); line-height: .99; text-wrap: balance; }
.concept-index .index-intro-foot { display: flex; justify-content: space-between; align-items: end; gap: 22px; margin-top: 13px; color: var(--index-muted); font-size: 12px; }
.concept-index .index-intro-foot > span { max-width: 68ch; }
.concept-index .index-intro-foot a { flex: 0 0 auto; color: var(--index-blue); font-size: 11px; font-weight: 700; text-decoration: none; }
.concept-index .index-opening { display: grid; grid-template-columns: minmax(0, 1.8fr) minmax(245px, .82fr); gap: clamp(24px, 3vw, 44px); align-items: start; padding: 26px 0 39px; border-bottom: 1px solid var(--index-line); }
.concept-index .index-cover { min-width: 0; }
.concept-index .index-cover-image,
.concept-index .index-headline-image,
.concept-index .index-row-image,
.concept-index .index-essential-image,
.concept-index .index-ai-image,
.concept-index .index-topic-image,
.concept-index .index-staff-image,
.concept-index .index-guide-image { display: block; overflow: hidden; background: #e6e8ed; }
.concept-index .index-cover-image img,
.concept-index .index-headline-image img,
.concept-index .index-row-image img,
.concept-index .index-essential-image img,
.concept-index .index-ai-image img,
.concept-index .index-topic-image img,
.concept-index .index-staff-image img,
.concept-index .index-guide-image img { width: 100%; height: auto; object-fit: contain; transition: transform .45s cubic-bezier(.2,.8,.2,1); }
.concept-index .index-cover-image:hover img,
.concept-index .index-headline-image:hover img,
.concept-index .index-row-image:hover img,
.concept-index .index-essential-image:hover img,
.concept-index .index-ai-image:hover img,
.concept-index .index-topic-image:hover img,
.concept-index .index-staff-image:hover img,
.concept-index .index-guide-image:hover img { transform: scale(1.015); }
.concept-index .meta { display: flex; flex-wrap: wrap; gap: 4px 10px; margin: 13px 0 7px; color: var(--index-muted); font: 500 10px/1.4 var(--sans); }
.concept-index .meta .category { color: var(--index-blue); font-weight: 700; text-decoration: none; }
.concept-index .index-cover h2 { max-width: 20ch; margin: 0; color: var(--index-navy); font-size: clamp(30px, 3.45vw, 47px); line-height: 1.04; text-wrap: balance; }
.concept-index .index-cover h2 a,
.concept-index .index-headline h3 a,
.concept-index .index-row-copy h3 a,
.concept-index .index-essential h3 a,
.concept-index .index-ai-story h3 a,
.concept-index .index-topic-story h3 a,
.concept-index .index-staff-story h3 a,
.concept-index .index-guide h3 a { text-decoration: none; }
.concept-index .index-cover-copy > p { max-width: 66ch; margin: 11px 0 0; color: #484d5f; font-size: 13px; line-height: 1.65; }
.concept-index .index-read-link { display: inline-flex; gap: 8px; margin-top: 13px; color: var(--index-blue); font-size: 11px; font-weight: 700; text-decoration: none; }
.concept-index .index-headlines { min-width: 0; padding-top: 2px; }
.concept-index .index-headlines > header { position: relative; margin-bottom: 12px; padding: 0 0 11px; border-bottom: 2px solid var(--index-navy); }
.concept-index .index-headlines header > p { margin-bottom: 2px; }
.concept-index .index-headlines header h2 { margin: 0; color: var(--index-navy); font-size: 24px; line-height: 1.08; }
.concept-index .index-headlines header > a { display: inline-block; margin-top: 7px; color: var(--index-blue); font-size: 10px; font-weight: 700; text-decoration: none; }
.concept-index .index-headline { display: grid; grid-template-columns: 83px minmax(0,1fr); grid-template-rows: auto auto; gap: 0 11px; padding: 11px 0; border-bottom: 1px solid var(--index-line); }
.concept-index .index-headline-image { grid-column: 1; grid-row: 1 / 3; align-self: start; }
.concept-index .index-headline-image img { width: 83px; }
.concept-index .index-headline .meta { grid-column: 2; margin: 0 0 4px; font-size: 9px; }
.concept-index .index-headline h3 { grid-column: 2; margin: 0; color: var(--index-ink); font-size: 16px; line-height: 1.18; }
.concept-index .index-headline-lead { grid-template-columns: 1fr; padding-top: 0; }
.concept-index .index-headline-lead .index-headline-image { grid-column: 1; grid-row: auto; margin-bottom: 6px; }
.concept-index .index-headline-lead .index-headline-image img { width: 100%; }
.concept-index .index-headline-lead .meta,
.concept-index .index-headline-lead h3 { grid-column: 1; }
.concept-index .index-headline-lead h3 { font-size: 18px; }

.concept-index .index-section-heading { display: flex; justify-content: space-between; align-items: end; gap: 18px; margin: 0 0 19px; padding-bottom: 10px; border-bottom: 1px solid var(--index-line); }
.concept-index .index-section-heading > div > p { margin-bottom: 4px; }
.concept-index .index-section-heading h2 { margin: 0; color: var(--index-navy); font-size: clamp(26px, 2.8vw, 36px); line-height: 1.05; text-wrap: balance; }
.concept-index .index-section-heading > a { flex: 0 0 auto; padding-bottom: 3px; color: var(--index-blue); font-size: 10px; font-weight: 700; text-decoration: none; }
.concept-index .index-radar,
.concept-index .index-recommended,
.concept-index .index-ai,
.concept-index .index-nearby,
.concept-index .index-topic,
.concept-index .index-staff,
.concept-index .index-latest,
.concept-index .index-guides,
.concept-index .index-all-topics { margin-top: 43px; }
.concept-index .index-radar-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 19px; align-items: start; }
.concept-index .index-story-row { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); align-items: start; gap: 13px; }
.concept-index .index-story-row.image-right .index-row-image { grid-column: 2; grid-row: 1; }
.concept-index .index-story-row.image-right .index-row-copy { grid-column: 1; grid-row: 1; }
.concept-index .index-row-copy .meta { margin: 0 0 5px; font-size: 9px; }
.concept-index .index-row-copy h3 { margin: 0; color: var(--index-navy); font-size: 21px; line-height: 1.12; }
.concept-index .index-row-copy p { margin: 8px 0 0; color: #4d5263; font-size: 11px; line-height: 1.55; }
.concept-index .index-essential-shelf { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 17px; }
.concept-index .index-essential .meta { margin: 9px 0 4px; }
.concept-index .index-essential h3 { margin: 0; color: var(--index-ink); font-size: 18px; line-height: 1.17; }
.concept-index .index-ai { display: grid; grid-template-columns: minmax(0,1fr) 185px; gap: 24px; align-items: start; padding: 24px; background: var(--index-navy); color: #fff; }
.concept-index .index-ai .index-section-heading { border-color: #8188bd; }
.concept-index .index-ai .index-section-heading h2,
.concept-index .index-ai .index-section-heading > a,
.concept-index .index-ai .meta .category,
.concept-index .index-ai h3 a { color: #fff; }
.concept-index .index-ai .index-section-heading > div > p { color: #cbd5ff; }
.concept-index .index-ai .meta,
.concept-index .index-ai .index-ai-story > p { color: #e2e5f4; }
.concept-index .index-ai-grid { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(0,1fr); grid-template-rows: min-content min-content; gap: 18px; align-items: start; }
.concept-index .index-ai-story { min-width: 0; }
.concept-index .index-ai-story.ai-lead { grid-column: 1; grid-row: 1 / 3; }
.concept-index .index-ai-story:not(.ai-lead) { display: grid; grid-template-columns: 94px minmax(0,1fr); gap: 0 11px; }
.concept-index .index-ai-story:not(.ai-lead) .index-ai-image { grid-column: 1; grid-row: 1 / 3; }
.concept-index .index-ai-story:not(.ai-lead) .meta { grid-column: 2; margin: 0 0 4px; font-size: 9px; }
.concept-index .index-ai-story:not(.ai-lead) h3 { grid-column: 2; }
.concept-index .index-ai-story h3 { margin: 0; color: #fff; font-size: 18px; line-height: 1.2; }
.concept-index .index-ai-story.ai-lead h3 { font-size: 25px; }
.concept-index .index-ai-story > p { margin: 8px 0 0; font-size: 11px; line-height: 1.55; }
.concept-index .index-middle-ad { min-width: 0; align-self: center; }
.concept-index .index-middle-ad .ad-slot { display: block; width: 100%; margin: 0; padding: 0; background: #fff; }
.concept-index .index-middle-ad .ad-label { display: block; padding: 6px 8px 0; color: #4f5677; font: 600 9px/1.3 var(--sans); letter-spacing: .08em; text-transform: uppercase; }
.concept-index .index-middle-ad .ad-slot a { display: block; }
.concept-index .index-middle-ad .ad-slot img { display: block; width: 100%; max-width: 100%; height: auto; object-fit: contain; }
.concept-index .index-middle-ad:not(:has(.ad-slot)) { display: none; }
.concept-index .index-nearby { display: grid; grid-template-columns: .8fr 1fr 1fr; gap: 22px; align-items: start; padding: 20px 0; border-top: 1px solid var(--index-line); border-bottom: 1px solid var(--index-line); }
.concept-index .index-nearby-heading h2 { max-width: 10ch; margin: 0; color: var(--index-navy); font-size: 25px; line-height: 1.05; }
.concept-index .index-nearby-topic { padding-left: 16px; border-left: 1px solid var(--index-line); }
.concept-index .index-nearby-topic header { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.concept-index .index-nearby-topic header h3 { margin: 0; color: var(--index-navy); font-size: 19px; line-height: 1.15; }
.concept-index .index-nearby-topic header > a { color: var(--index-blue); font-weight: 700; text-decoration: none; }
.concept-index .index-nearby-topic > div { display: grid; gap: 8px; margin-top: 10px; }
.concept-index .index-nearby-topic > div a { color: #4d5263; font-size: 11px; line-height: 1.35; text-decoration: none; }
.concept-index .index-topic { padding-top: 3px; }
.concept-index .index-topic-stories { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 24px; align-items: center; }
.concept-index .index-topic-story { min-width: 0; }
.concept-index .index-topic-story.topic-lead .index-topic-copy { padding: 0 4px 3px; }
.concept-index .index-topic-story.topic-lead h3 { margin: 0; color: var(--index-navy); font-size: clamp(27px, 3vw, 39px); line-height: 1.06; }
.concept-index .index-topic-story.topic-lead .index-topic-copy > p { max-width: 58ch; margin: 9px 0 0; color: #4d5263; font-size: 12px; line-height: 1.6; }
.concept-index .index-topic-story:not(.topic-lead) { display: grid; grid-template-columns: 130px minmax(0,1fr); gap: 14px; align-items: start; }
.concept-index .index-topic-story:not(.topic-lead) .index-topic-copy .meta { margin: 0 0 5px; }
.concept-index .index-topic-story:not(.topic-lead) h3 { margin: 0; color: var(--index-ink); font-size: 20px; line-height: 1.15; }
.concept-index .index-topic-story:not(.topic-lead) .index-topic-copy > p { margin: 7px 0 0; color: #4d5263; font-size: 11px; line-height: 1.5; }
.concept-index .index-topic.topic-reverse .index-topic-stories { grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); }
.concept-index .index-topic.topic-reverse .topic-lead { grid-column: 2; grid-row: 1; }
.concept-index .index-topic.topic-reverse .index-topic-story:not(.topic-lead) { grid-column: 1; grid-row: 1; grid-template-columns: minmax(0,1fr); }
.concept-index .index-staff { padding: 22px; background: #e9f1f7; }
.concept-index .index-staff .index-section-heading { border-color: #c9dae7; }
.concept-index .index-staff-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
.concept-index .index-staff-story { min-width: 0; }
.concept-index .index-staff-story h3 { max-width: 23ch; margin: 0; color: var(--index-navy); font-size: 27px; line-height: 1.08; }
.concept-index .index-staff-story > p { max-width: 66ch; margin: 8px 0 0; color: #484d5f; font-size: 12px; line-height: 1.58; }
.concept-index .index-latest { padding-top: 5px; border-top: 2px solid var(--index-navy); }
.concept-index .concept-feed { width: 100%; margin: 0; }
.concept-index .concept-feed .feed-heading { display: flex; justify-content: space-between; align-items: end; gap: 18px; margin: 0 0 18px; padding-bottom: 10px; border-bottom: 1px solid var(--index-line); }
.concept-index .concept-feed .feed-heading h2 { margin: 0; color: var(--index-navy); font: 550 clamp(26px, 2.8vw, 36px)/1.05 var(--serif); letter-spacing: -.025em; }
.concept-index .concept-feed .feed-heading > a { color: var(--index-blue); font-size: 10px; font-weight: 700; }
.concept-index .feed-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 28px 19px; align-items: start; }
.concept-index .feed-item { min-width: 0; padding: 0; border: 0; }
.concept-index .feed-item .concept-feed-card { display: block; min-width: 0; }
.concept-index .concept-feed-card .image-link { display: block; height: auto; overflow: hidden; background: #e6e8ed; }
.concept-index .concept-feed-card .image-link img { display: block; width: 100%; height: auto; object-fit: contain; }
.concept-index .concept-feed-card .meta { margin: 10px 0 6px; font-size: 9px; }
.concept-index .concept-feed-card .meta > a:first-child { color: var(--index-blue); font-weight: 700; text-decoration: none; }
.concept-index .concept-feed-card h3 { margin: 0; color: var(--index-ink); font-size: 19px; line-height: 1.2; }
.concept-index .concept-feed-card p { margin: 7px 0 0; color: #4d5263; font-size: 11px; line-height: 1.55; }
.concept-index .index-latest .feed-actions { display: flex; justify-content: center; align-items: center; gap: 12px; margin: 26px 0 0; }
.concept-index .index-latest .more-button { min-height: 43px; padding: 8px 21px; border: 1px solid var(--index-navy); border-radius: 0; background: transparent; color: var(--index-navy); font: 650 12px var(--sans); cursor: pointer; }
.concept-index .index-latest .more-button:hover { background: var(--index-navy); color: #fff; }
.concept-index .index-latest .feed-refine { margin-top: 12px; color: var(--index-muted); font-size: 12px; }
.concept-index .index-latest .feed-refine summary { width: fit-content; padding: 8px 0; cursor: pointer; }
.concept-index .index-latest .filters { display: flex; flex-wrap: wrap; gap: 6px; margin: 7px 0; }
.concept-index .index-latest .filters button { min-height: 36px; padding: 6px 11px; border: 1px solid #b9bfcc; background: #fff; color: var(--index-navy); font: 600 11px var(--sans); cursor: pointer; }
.concept-index .index-latest .filters button[aria-pressed='true'] { border-color: var(--index-navy); background: var(--index-navy); color: #fff; }
.concept-index .index-latest .empty-state { color: var(--index-muted); font-size: 13px; }
.concept-index .index-guide-list { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.concept-index .index-guide h3 { margin: 8px 0 0; color: var(--index-navy); font-size: 19px; line-height: 1.2; }
.concept-index .index-guide .meta { margin: 8px 0 0; }
.concept-index .index-topic-links { display: flex; flex-wrap: wrap; gap: 6px 17px; padding-top: 2px; }
.concept-index .index-topic-links a { display: inline-flex; gap: 7px; align-items: baseline; padding: 7px 0; border-bottom: 1px solid var(--index-line); color: var(--index-navy); font: 550 16px/1.25 var(--serif); text-decoration: none; }
.concept-index .index-topic-links a span { color: var(--index-blue); font: 600 10px var(--sans); }
.concept-index [hidden] { display: none !important; }

@media (max-width: 1150px) {
  body:has(.concept-index) { --index-rail-width: 194px; }
  .concept-index, .index-footer { width: calc(100% - 48px); gap: 28px; }
  .concept-index .index-opening { grid-template-columns: minmax(0,1.45fr) minmax(220px,.82fr); gap: 23px; }
  .concept-index .index-radar-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .concept-index .index-radar-grid > :last-child { grid-column: 1 / -1; max-width: 620px; }
  .concept-index .index-ai { grid-template-columns: minmax(0,1fr) 150px; gap: 16px; padding: 18px; }
  .concept-index .index-ai-grid { grid-template-columns: minmax(0,1fr); grid-template-rows: auto; }
  .concept-index .index-ai-story.ai-lead { grid-column: 1; grid-row: auto; }
  .concept-index .index-ai-story:not(.ai-lead) { grid-template-columns: 80px minmax(0,1fr); }
  .concept-index .index-topic-stories { gap: 16px; }
  .concept-index .index-topic-story:not(.topic-lead) { grid-template-columns: 105px minmax(0,1fr); gap: 10px; }
}
@media (max-width: 820px) {
  body:has(.concept-index) { --index-rail-width: 166px; }
  .concept-index, .index-footer { width: calc(100% - 40px); gap: 23px; padding-top: 18px; }
  .concept-index .index-brand { width: 148px; margin-bottom: 22px; }
  .concept-index .index-nav a { font-size: 12px; }
  .concept-index .index-taxonomy a { font-size: 10px; }
  .concept-index .index-opening { grid-template-columns: minmax(0,1.3fr) minmax(190px,.82fr); gap: 18px; }
  .concept-index .index-headline { grid-template-columns: 65px minmax(0,1fr); gap: 0 8px; }
  .concept-index .index-headline-image img { width: 65px; }
  .concept-index .index-headline h3 { font-size: 14px; }
  .concept-index .index-headline-lead h3 { font-size: 16px; }
  .concept-index .index-radar-grid { gap: 15px; }
  .concept-index .index-story-row { grid-template-columns: minmax(0,1fr); gap: 8px; }
  .concept-index .index-story-row.image-right .index-row-image,
  .concept-index .index-story-row.image-right .index-row-copy { grid-column: 1; }
  .concept-index .index-story-row.image-right .index-row-image { grid-row: 1; }
  .concept-index .index-story-row.image-right .index-row-copy { grid-row: 2; }
  .concept-index .index-row-copy h3 { font-size: 18px; }
  .concept-index .index-essential-shelf { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px 14px; }
  .concept-index .index-ai { grid-template-columns: minmax(0,1fr) 120px; }
  .concept-index .index-nearby { grid-template-columns: 1fr 1fr; }
  .concept-index .index-nearby-heading { grid-column: 1/-1; }
}
@media (max-width: 640px) {
  .concept-index, .index-footer { display: flex; flex-direction: column; gap: 18px; width: calc(100% - 28px); padding: 0 0 32px; }
  .concept-index .index-rail { position: relative; top: auto; order: 0; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 12px; margin: 0; padding: 11px 0 12px; max-height: none; overflow: visible; border-bottom: 1px solid var(--index-line); }
  .concept-index .index-brand { width: 138px; margin: 0; }
  .concept-index .index-drawer { position: relative; display: block; align-self: center; }
  .concept-index .index-drawer > summary { display: flex; align-items: center; gap: 10px; min-height: 42px; padding: 8px 11px; border: 1px solid var(--index-navy); color: var(--index-navy); font-size: 11px; font-weight: 700; cursor: pointer; list-style: none; }
  .concept-index .index-drawer > summary::-webkit-details-marker { display: none; }
  .concept-index .index-drawer[open] > summary { background: var(--index-navy); color: #fff; }
  .concept-index .drawer-mark { font-size: 17px; line-height: 1; }
  .concept-index .index-drawer[open] .drawer-mark { transform: rotate(45deg); }
  .concept-index .index-drawer-content { position: absolute; z-index: 5; top: calc(100% + 7px); right: 0; width: min(340px, calc(100vw - 28px)); max-height: min(70vh, 610px); overflow: auto; padding: 16px; border: 1px solid #c9cdd8; background: #fff; box-shadow: 0 10px 24px rgb(31 39 85 / .14); }
  .concept-index .index-drawer-content .index-nav { border-top: 0; }
  .concept-index .index-drawer-content .index-nav a { padding: 10px 2px; font-size: 13px; }
  .concept-index .index-search { margin: 18px 0; }
  .concept-index .index-taxonomy h2 { font-size: 18px; }
  .concept-index .index-taxonomy a { padding: 6px 0; font-size: 12px; }
  .concept-index .index-nav-desktop,
  .concept-index .index-search-desktop,
  .concept-index .index-taxonomy-desktop { display: none; }
  .concept-index .index-main { width: 100%; }
  .concept-index .index-intro { padding: 5px 0 16px; }
  .concept-index .index-intro h1 { max-width: 15ch; font-size: clamp(42px, 12vw, 58px); }
  .concept-index .index-intro-foot { align-items: flex-start; flex-direction: column; gap: 8px; margin-top: 9px; font-size: 12px; }
  .concept-index .index-opening { grid-template-columns: minmax(0,1fr); gap: 23px; padding: 18px 0 28px; }
  .concept-index .index-cover h2 { font-size: clamp(30px, 9vw, 41px); }
  .concept-index .index-cover-copy > p { font-size: 13px; }
  .concept-index .index-headlines { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 13px; }
  .concept-index .index-headlines > header { grid-column: 1/-1; }
  .concept-index .index-headline { grid-template-columns: 66px minmax(0,1fr); gap: 0 8px; }
  .concept-index .index-headline-image img { width: 66px; }
  .concept-index .index-headline-lead { grid-column: 1/-1; grid-template-columns: 92px minmax(0,1fr); align-items: center; gap: 0 10px; }
  .concept-index .index-headline-lead .index-headline-image { grid-column: 1; grid-row: 1 / 3; margin: 0; }
  .concept-index .index-headline-lead .meta,
  .concept-index .index-headline-lead h3 { grid-column: 2; }
  .concept-index .index-headline-lead .index-headline-image img { width: 92px; }
  .concept-index .index-headline h3 { font-size: 14px; }
  .concept-index .index-headline-lead h3 { font-size: 16px; }
  .concept-index .index-radar,
  .concept-index .index-recommended,
  .concept-index .index-ai,
  .concept-index .index-nearby,
  .concept-index .index-topic,
  .concept-index .index-staff,
  .concept-index .index-latest,
  .concept-index .index-guides,
  .concept-index .index-all-topics { margin-top: 32px; }
  .concept-index .index-section-heading { align-items: flex-end; gap: 10px; margin-bottom: 14px; }
  .concept-index .index-section-heading h2 { font-size: 29px; }
  .concept-index .index-section-heading > a { max-width: 90px; text-align: right; }
  .concept-index .index-radar-grid { grid-template-columns: minmax(0,1fr); gap: 16px; }
  .concept-index .index-radar-grid > :last-child { grid-column: auto; max-width: none; }
  .concept-index .index-story-row { grid-template-columns: 112px minmax(0,1fr); gap: 12px; }
  .concept-index .index-story-row.image-right .index-row-image { grid-column: 1; grid-row: 1; }
  .concept-index .index-story-row.image-right .index-row-copy { grid-column: 2; grid-row: 1; }
  .concept-index .index-row-copy h3 { font-size: 19px; }
  .concept-index .index-row-copy p { font-size: 11px; }
  .concept-index .index-essential h3 { font-size: 17px; }
  .concept-index .index-ai { display: block; padding: 17px; }
  .concept-index .index-ai-content { min-width: 0; }
  .concept-index .index-ai-grid { grid-template-columns: minmax(0,1fr); gap: 14px; }
  .concept-index .index-ai-story.ai-lead { grid-column: auto; grid-row: auto; }
  .concept-index .index-ai-story.ai-lead h3 { font-size: 23px; }
  .concept-index .index-ai-story:not(.ai-lead) { grid-template-columns: 88px minmax(0,1fr); }
  .concept-index .index-middle-ad { margin-top: 21px; }
  .concept-index .index-middle-ad .ad-slot { max-width: 300px; margin: 0 auto; }
  .concept-index .index-nearby { grid-template-columns: 1fr; gap: 15px; }
  .concept-index .index-nearby-heading { grid-column: auto; }
  .concept-index .index-nearby-heading h2 { max-width: none; font-size: 25px; }
  .concept-index .index-nearby-topic { padding: 13px 0 0; border-top: 1px solid var(--index-line); border-left: 0; }
  .concept-index .index-topic-stories,
  .concept-index .index-topic.topic-reverse .index-topic-stories { grid-template-columns: minmax(0,1fr); gap: 15px; }
  .concept-index .index-topic.topic-reverse .topic-lead,
  .concept-index .index-topic.topic-reverse .index-topic-story:not(.topic-lead) { grid-column: auto; grid-row: auto; }
  .concept-index .index-topic-story.topic-lead h3 { font-size: 31px; }
  .concept-index .index-topic-story:not(.topic-lead),
  .concept-index .index-topic.topic-reverse .index-topic-story:not(.topic-lead) { grid-template-columns: 102px minmax(0,1fr); gap: 11px; }
  .concept-index .index-topic-story:not(.topic-lead) h3 { font-size: 18px; }
  .concept-index .index-topic-story:not(.topic-lead) .index-topic-copy > p { display: none; }
  .concept-index .index-staff { padding: 15px; }
  .concept-index .index-staff-grid { grid-template-columns: minmax(0,1fr); gap: 21px; }
  .concept-index .index-staff-story h3 { font-size: 25px; }
  .concept-index .feed-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 23px 13px; }
  .concept-index .concept-feed-card h3 { font-size: 17px; }
  .concept-index .concept-feed-card p { font-size: 11px; }
  .concept-index .index-guide-list { grid-template-columns: minmax(0,1fr); gap: 18px; }
  .concept-index .index-guide { display: grid; grid-template-columns: 115px minmax(0,1fr); gap: 0 12px; align-items: start; }
  .concept-index .index-guide-image { grid-column: 1; grid-row: 1 / 3; }
  .concept-index .index-guide .meta { grid-column: 2; margin: 0 0 5px; }
  .concept-index .index-guide h3 { grid-column: 2; margin: 0; font-size: 18px; }
  .concept-index .index-topic-links { gap: 4px 13px; }
  .concept-index .index-topic-links a { font-size: 16px; }
}
@media (max-width: 360px) {
  .concept-index .index-headlines { grid-template-columns: 1fr; }
  .concept-index .index-headline-lead { grid-column: 1; }
  .concept-index .index-essential-shelf,
  .concept-index .feed-grid { grid-template-columns: minmax(0,1fr); }
}
@media (prefers-reduced-motion: reduce) {
  .concept-index *, .concept-index *::before, .concept-index *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media(min-width:1151px){.concept-index .index-ai{grid-template-columns:minmax(0,1fr) 240px}.concept-index .index-ai-grid{grid-template-columns:minmax(0,1fr)}.concept-index .index-ai-story.ai-lead{grid-column:1;grid-row:auto}}

/* Let the first screen offer four different reading paths. */
.concept-index .index-intro{padding-bottom:16px}
.concept-index .index-intro .ad-home_top{margin-bottom:14px}
.concept-index .index-intro h1{max-width:none;font-size:clamp(38px,4vw,56px)}
.concept-index .index-intro-foot{margin-top:9px}
.concept-index .index-opening{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;padding:22px 0 26px}
.concept-index .index-cover h2{font-size:clamp(25px,2.3vw,33px);max-width:none}
.concept-index .index-cover-copy>p{font-size:12px;line-height:1.5;margin-top:8px}
.concept-index .index-read-link{margin-top:8px}
.concept-index .index-arrivals{min-width:0}
.concept-index .index-arrivals .index-section-heading{margin-bottom:12px;padding-bottom:9px}
.concept-index .index-arrivals .index-section-heading h2{font-size:23px}
.concept-index .index-arrivals .index-section-heading p{display:none}
.concept-index .index-arrivals-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.concept-index .index-arrivals .index-story-row{display:block}
.concept-index .index-arrivals .image-right .index-row-image,.concept-index .index-arrivals .image-right .index-row-copy{grid-column:auto;grid-row:auto}
.concept-index .index-arrivals .index-row-image{height:135px;display:flex;align-items:center;background:#e6e8ed}
.concept-index .index-arrivals .index-row-image img{width:100%;height:100%;object-fit:contain;transform:none}
.concept-index .index-arrivals .meta{margin:8px 0 5px}
.concept-index .index-arrivals .index-row-copy h3{font-size:20px;line-height:1.17;margin:0}
.concept-index .index-arrivals .index-story-row:last-child{grid-column:1/-1;display:grid;grid-template-columns:110px minmax(0,1fr);gap:16px;padding-top:14px;border-top:1px solid var(--index-line)}
.concept-index .index-arrivals .index-story-row:last-child .index-row-image{height:80px}
.concept-index .index-arrivals .index-story-row:last-child .meta{margin-top:0}
.concept-index .index-news-digest{margin-top:32px}
.concept-index .index-news-digest .index-headlines{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px}
.concept-index .index-news-digest .index-headlines>header{grid-column:1/-1}
.concept-index .index-news-digest .index-headline-lead{grid-row:2/4;display:block}
.concept-index .index-news-digest .index-headline-lead .index-headline-image{max-width:300px}
@media(max-width:1000px){
 .concept-index .index-opening{gap:20px}
 .concept-index .index-arrivals-grid{gap:12px}
 .concept-index .index-arrivals .index-row-image{height:105px}
 .concept-index .index-arrivals .index-row-copy h3{font-size:17px}
 .concept-index .index-arrivals .index-story-row:last-child{grid-template-columns:85px minmax(0,1fr);gap:10px}
}
@media(max-width:640px){
 .concept-index .index-intro h1{font-size:38px;max-width:none}
 .concept-index .index-intro-foot{display:block;font-size:11px}
 .concept-index .index-intro-foot>a{display:none}
 .concept-index .index-opening{grid-template-columns:1fr;gap:18px;padding-top:16px}
 .concept-index .index-cover{display:grid;grid-template-columns:125px minmax(0,1fr);gap:14px;align-items:start}
 .concept-index .index-cover-image{background:transparent}
 .concept-index .index-cover h2{font-size:22px;line-height:1.13}
 .concept-index .index-cover .meta{margin-top:0;font-size:9px}
 .concept-index .index-cover-copy>p,.concept-index .index-read-link{display:none}
 .concept-index .index-arrivals .index-section-heading h2{font-size:21px}
 .concept-index .index-arrivals .index-row-image{height:105px}
 .concept-index .index-arrivals .index-story-row:last-child .index-row-image{height:75px}
 .concept-index .index-news-digest .index-headlines{grid-template-columns:1fr;gap:0}
 .concept-index .index-news-digest .index-headline-lead{grid-row:auto;display:grid;grid-template-columns:92px minmax(0,1fr)}
}
@media(max-width:360px){.concept-index .index-cover{grid-template-columns:95px minmax(0,1fr)}.concept-index .index-cover h2{font-size:20px}}

/* Footer shares the publication grid, including every rail breakpoint. */
.index-footer{padding:0 0 28px;color:var(--index-ink)}
.index-footer-inner{grid-column:2;min-width:0;display:grid;grid-template-columns:170px minmax(0,1fr) auto;gap:22px 30px;align-items:center;border-top:1px solid var(--index-line);padding-top:28px}
.index-footer-logo{display:block;width:170px}.index-footer-logo img{width:100%;height:auto}
.index-footer-inner>p{margin:0;color:var(--index-muted);font-size:13px;line-height:1.6}
.index-footer nav{display:grid;grid-template-columns:1fr 1fr;gap:10px 24px;font-size:12px;color:var(--index-navy)}
.index-footer-bottom{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px 24px;border-top:1px solid var(--index-line);padding-top:12px;color:var(--index-muted);font-size:11px}
.index-footer-bottom button{min-height:44px;padding:8px 0;border:0;background:transparent;font:inherit;color:var(--index-blue);text-decoration:underline;text-underline-offset:3px}
@media(max-width:1000px){.index-footer-inner{grid-template-columns:150px minmax(0,1fr);gap:20px}.index-footer-logo{width:150px}.index-footer nav{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:14px 24px}}
@media(max-width:640px){.index-footer{padding-bottom:20px}.index-footer-inner{width:100%;grid-template-columns:1fr;gap:18px;padding-top:24px}.index-footer nav{grid-column:1;gap:14px 26px}.index-footer-bottom{margin-top:2px;padding-top:12px}}