/* Isolated visual system for the evidence-led history experiences. */
.ktw-history {
  --history-ink: #231f20;
  --history-teal: #02838d;
  --history-teal-dark: #17656d;
  --history-pale: #deedf0;
  --history-sand: #fbf5ed;
  --history-paper: #fff;
  --history-line: #d6d6d6;
  --history-muted: #5c595a;
  --history-gold: #e9be38;
  --history-coral: #d86f4f;
  color: var(--history-ink);
  background: var(--history-paper);
}
.ktw-history *, .ktw-history *::before, .ktw-history *::after { box-sizing: border-box; }
.ktw-history ::selection { background: var(--history-gold); color: var(--history-ink); }
.ktw-history :where(a, button, summary):focus-visible { outline: 3px solid var(--history-gold); outline-offset: 4px; }
.ktw-history [hidden] { display: none !important; }

.ktw-history-hero { position: relative; overflow: hidden; background: var(--history-pale); }
.ktw-history--water .ktw-history-hero { background: #dce8c9; }
.ktw-history-hero::before { position: absolute; right: -9vw; bottom: -42%; width: 48vw; height: 48vw; border: 2px solid rgba(35,31,32,.16); border-radius: 50%; content: ""; }
.ktw-history-hero::after { position: absolute; right: 8vw; bottom: -16%; width: 22vw; height: 22vw; border: 2px dotted rgba(35,31,32,.3); border-radius: 50%; content: ""; }
.ktw-history-hero__grid { position: relative; z-index: 1; display: grid; min-height: 610px; padding-block: 70px; align-items: center; grid-template-columns: minmax(0,1.12fr) minmax(330px,.68fr); gap: 72px; }
.ktw-history-hero h1 { max-width: 850px; margin: 0 0 26px; font-size: clamp(44px,5.5vw,76px); line-height: .98; letter-spacing: -.035em; }
.ktw-zh .ktw-history-hero h1 { font-size: clamp(41px,5vw,68px); line-height: 1.1; letter-spacing: -.025em; }
.ktw-history-hero__copy > p { max-width: 760px; margin: 0; color: #393536; font-size: clamp(19px,1.8vw,23px); line-height: 1.55; }
.ktw-history-hero__copy > a { display: inline-flex; min-height: 50px; margin-top: 30px; padding: 11px 19px; border: 2px solid var(--history-ink); border-radius: 999px; align-items: center; color: var(--history-ink); font-weight: 800; text-decoration: none; gap: 12px; }
.ktw-history-hero__copy > a span { width: 10px; height: 10px; border: solid currentColor; border-width: 0 2px 2px 0; transform: rotate(45deg) translateY(-2px); }
.ktw-history-hero__copy > a:hover { background: var(--history-ink); color: #fff; }
.ktw-history-answer { display: flex; min-height: 355px; padding: 38px; border: 1px solid rgba(35,31,32,.14); border-radius: 145px 22px 22px 22px; flex-direction: column; justify-content: flex-end; background: #fff; box-shadow: 0 24px 58px rgba(35,31,32,.12); }
.ktw-history--water .ktw-history-answer { border-radius: 22px 145px 22px 22px; }
.ktw-history-answer::before { width: 74px; height: 74px; margin: 0 0 auto 10px; border: 15px solid var(--history-teal); border-radius: 50%; content: ""; }
.ktw-history-answer > span { margin: 26px 0 10px; color: var(--history-teal-dark); font-size: 14px; font-weight: 850; letter-spacing: .07em; text-transform: uppercase; }
.ktw-history-answer > strong { font-size: clamp(21px,2vw,28px); line-height: 1.25; }

.ktw-history-key { border-top: 1px solid rgba(35,31,32,.1); border-bottom: 1px solid var(--history-line); background: var(--history-sand); }
.ktw-history-key__grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); }
.ktw-history-key article { display: grid; min-height: 144px; padding: 30px; border-right: 1px solid var(--history-line); align-items: start; grid-template-columns: 24px minmax(0,1fr); gap: 15px; }
.ktw-history-key article:last-child { border-right: 0; }
.ktw-history-key article > span, .ktw-history-status::before { width: 15px; height: 15px; margin-top: 5px; border-radius: 50%; background: var(--history-teal); content: ""; }
.ktw-history-key article[data-status="tradition"] > span, .ktw-history-status[data-status="tradition"]::before { background: var(--history-gold); }
.ktw-history-key article[data-status="open"] > span, .ktw-history-status[data-status="open"]::before { border: 2px solid var(--history-coral); background: transparent; }
.ktw-history-key h3 { margin: 0 0 7px; font-size: 18px; }
.ktw-history-key p { margin: 0; color: var(--history-muted); font-size: 15px; line-height: 1.45; }

.ktw-history-atlas, .ktw-history-names, .ktw-history-research { padding-block: 92px; }
.ktw-history-heading { max-width: 820px; margin-bottom: 46px; }
.ktw-history-heading h2 { margin: 0 0 15px; font-size: clamp(35px,4.5vw,56px); line-height: 1.04; letter-spacing: -.025em; }
.ktw-history-heading p { max-width: 720px; margin: 0; color: var(--history-muted); font-size: 19px; line-height: 1.55; }
.ktw-history-explorer { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(340px,.85fr); gap: 26px; }
.ktw-history-map { position: relative; min-height: 560px; overflow: hidden; border: 1px solid var(--history-line); border-radius: 24px; background: var(--history-sand); }
.ktw-history-map__field { position: absolute; inset: 0; opacity: .68; }
.ktw-history-map__field::before, .ktw-history-map__field::after, .ktw-history-map__field i { position: absolute; border: 1px solid rgba(23,101,109,.35); border-radius: 46% 54% 42% 58%; content: ""; }
.ktw-history-map__field::before { top: 8%; left: 8%; width: 44%; height: 31%; transform: rotate(-8deg); }
.ktw-history-map__field::after { right: 7%; bottom: 11%; width: 36%; height: 30%; transform: rotate(13deg); }
.ktw-history-map__field i:nth-child(1) { top: 38%; left: 28%; width: 47%; height: 23%; transform: rotate(6deg); }
.ktw-history-map__field i:nth-child(2) { top: 7%; right: 15%; width: 18%; height: 19%; }
.ktw-history-map__field i:nth-child(3) { bottom: 8%; left: 10%; width: 15%; height: 22%; }
.ktw-history-map__field i:nth-child(4) { top: 0; left: 0; width: 100%; height: 100%; border: 0; border-radius: 0; background-image: radial-gradient(rgba(35,31,32,.12) 1px, transparent 1px); background-size: 20px 20px; }
.ktw-history-map__point { position: absolute; z-index: 2; top: var(--map-y); left: var(--map-x); display: grid; max-width: 178px; min-height: 48px; padding: 8px 11px 8px 40px; border: 1px solid var(--history-ink); border-radius: 10px; background: #fff; color: var(--history-ink); text-align: left; cursor: pointer; transform: translate(-50%,-50%); box-shadow: 0 7px 18px rgba(35,31,32,.09); }
.ktw-history-map__point > span { position: absolute; top: 13px; left: 13px; width: 16px; height: 16px; border: 4px solid #fff; border-radius: 50%; background: var(--history-teal); box-shadow: 0 0 0 2px var(--history-teal); }
.ktw-history-map__point b { font-size: 14px; line-height: 1.15; }
.ktw-history-map__point small { margin-top: 2px; color: var(--history-muted); font-size: 11px; }
.ktw-history-map__point:hover, .ktw-history-map__point[aria-pressed="true"] { border-color: var(--history-teal); background: var(--history-teal-dark); color: #fff; }
.ktw-history-map__point[aria-pressed="true"] small, .ktw-history-map__point:hover small { color: rgba(255,255,255,.82); }
.ktw-history-map__point[aria-pressed="true"] > span { animation: ktw-history-pulse 1.8s ease-out infinite; }
@keyframes ktw-history-pulse { 0% { box-shadow: 0 0 0 2px #fff, 0 0 0 2px rgba(2,131,141,.55); } 70% { box-shadow: 0 0 0 2px #fff, 0 0 0 13px rgba(2,131,141,0); } 100% { box-shadow: 0 0 0 2px #fff, 0 0 0 13px rgba(2,131,141,0); } }
.ktw-history--water .ktw-history-map { display: grid; min-height: 560px; padding: 34px; position: relative; grid-template-columns: repeat(2,minmax(0,1fr)); grid-template-rows: auto repeat(2,minmax(128px,1fr)) minmax(96px,auto); grid-template-areas: "message message" "britain mexico" "households names" "origin origin"; gap: 18px; background: #f2eee6; }
.ktw-history--water .ktw-history-map::before { position: absolute; top: 42%; right: 18%; left: 18%; height: 1px; background: rgba(23,101,109,.24); content: ""; }
.ktw-history--water .ktw-history-map::after { position: absolute; top: 42%; bottom: 18%; left: 50%; width: 1px; background: rgba(23,101,109,.24); content: ""; }
.ktw-history-map__message { position: relative; z-index: 1; display: flex; padding-bottom: 18px; border-bottom: 1px solid rgba(23,101,109,.24); flex-direction: column; gap: 6px; grid-area: message; }
.ktw-history-map__message strong { max-width: 620px; color: var(--history-ink); font-size: clamp(24px,2.5vw,35px); line-height: 1.04; letter-spacing: -.025em; }
.ktw-history-map__message span { color: var(--history-muted); font-size: 16px; line-height: 1.4; }
.ktw-history--water .ktw-history-map__field { display: none; }
.ktw-history--water .ktw-history-map__point { position: relative; z-index: 1; top: auto; left: auto; display: flex; width: auto; max-width: none; min-height: 0; padding: 19px 18px 18px 53px; border-color: rgba(35,31,32,.22); border-radius: 14px; flex-direction: column; justify-content: center; background: #fff; transform: none; box-shadow: 0 9px 20px rgba(35,31,32,.08); }
.ktw-history--water .ktw-history-map__point > span { top: 20px; left: 19px; width: 18px; height: 18px; }
.ktw-history--water .ktw-history-map__point b { max-width: 220px; font-size: 18px; line-height: 1.12; }
.ktw-history--water .ktw-history-map__point small { margin-top: 5px; font-size: 13px; }
.ktw-history--water .ktw-history-map__point[data-history-status="tradition"] { background: #fff9e9; }
.ktw-history--water .ktw-history-map__point[data-history-status="tradition"] > span { background: var(--history-gold); box-shadow: 0 0 0 2px var(--history-gold); }
.ktw-history--water .ktw-history-map__point[data-history-status="open"] { background: #fff; border-color: rgba(216,111,79,.58); }
.ktw-history--water .ktw-history-map__point[data-history-status="open"] > span { border-color: #fff; background: #fff; box-shadow: 0 0 0 2px var(--history-coral); }
.ktw-history--water .ktw-history-map__point[aria-pressed="true"], .ktw-history--water .ktw-history-map__point:hover { border-color: var(--history-teal); background: var(--history-teal-dark); color: #fff; }
.ktw-history--water .ktw-history-map__point[aria-pressed="true"] small, .ktw-history--water .ktw-history-map__point:hover small { color: rgba(255,255,255,.82); }
.ktw-history--water .ktw-history-map__point[data-history-point="britain"] { grid-area: britain; }
.ktw-history--water .ktw-history-map__point[data-history-point="mexico"] { grid-area: mexico; }
.ktw-history--water .ktw-history-map__point[data-history-point="households"] { grid-area: households; }
.ktw-history--water .ktw-history-map__point[data-history-point="names"] { grid-area: names; }
.ktw-history--water .ktw-history-map__point[data-history-point="origin"] { grid-area: origin; }
.ktw-history-panels { min-height: 560px; }
.ktw-history-panels article { display: flex; min-height: 560px; padding: 42px; border-radius: 24px; flex-direction: column; background: var(--history-pale); box-shadow: inset 0 7px 0 var(--history-teal); }
.ktw-history-panels article > div { display: flex; margin-bottom: auto; align-items: center; justify-content: space-between; gap: 20px; }
.ktw-history-panels article > div > small { color: var(--history-muted); font-weight: 750; }
.ktw-history-status { display: inline-flex; align-items: center; color: var(--history-teal-dark); font-size: 13px; font-weight: 850; letter-spacing: .04em; text-transform: uppercase; gap: 8px; }
.ktw-history-status::before { display: block; margin: 0; flex: 0 0 auto; }
.ktw-history-panels h3 { max-width: 580px; margin: 60px 0 20px; font-size: clamp(31px,3.2vw,46px); line-height: 1.06; }
.ktw-history-panels p { max-width: 650px; margin: 0; color: #393536; font-size: 19px; line-height: 1.58; }
.ktw-history-filter { display: flex; margin-top: 42px; padding: 5px; border: 1px solid #aaa6a0; border-radius: 999px; grid-column: 1 / -1; justify-self: start; background: var(--history-sand); }
.ktw-history-filter button { min-height: 46px; padding: 9px 18px; border: 0; border-radius: 999px; background: transparent; color: var(--history-ink); font-weight: 800; cursor: pointer; }
.ktw-history-filter button:hover { background: var(--history-pale); }
.ktw-history-filter button[aria-pressed="true"] { background: var(--history-ink); color: #fff; }
.ktw-history-filter__status { min-height: 1.5em; margin: 8px 0 0; color: var(--history-muted); font-size: 14px; grid-column: 1 / -1; }
.ktw-history-timeline { position: relative; display: grid; margin: 34px 0 0; padding: 0; grid-column: 1 / -1; list-style: none; gap: 0; }
.ktw-history-timeline::before { position: absolute; top: 0; bottom: 0; left: 130px; width: 2px; background: var(--history-line); content: ""; }
.ktw-history-timeline li { position: relative; display: grid; min-height: 150px; padding: 0 0 34px; grid-template-columns: 105px minmax(0,1fr); gap: 52px; }
.ktw-history-timeline li::before { position: absolute; top: 8px; left: 122px; width: 18px; height: 18px; border: 4px solid #fff; border-radius: 50%; background: var(--history-teal); box-shadow: 0 0 0 2px var(--history-teal); content: ""; }
.ktw-history-timeline li[data-status="tradition"]::before { background: var(--history-gold); box-shadow: 0 0 0 2px var(--history-gold); }
.ktw-history-timeline li[data-status="open"]::before { background: #fff; box-shadow: 0 0 0 2px var(--history-coral); }
.ktw-history-timeline li > span { padding-top: 5px; color: var(--history-muted); font-size: 14px; font-weight: 800; text-align: right; }
.ktw-history-timeline small { color: var(--history-teal-dark); font-size: 12px; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; }
.ktw-history-timeline h3 { margin: 7px 0 6px; font-size: 25px; }
.ktw-history-timeline p { margin: 0; color: var(--history-muted); font-size: 17px; }

.ktw-history-names { background: var(--history-sand); }
.ktw-history-name-grid { display: grid; grid-template-columns: repeat(12,minmax(0,1fr)); gap: 18px; }
.ktw-history-name-grid article { min-height: 250px; padding: 30px; border: 1px solid var(--history-line); border-radius: 18px; background: #fff; grid-column: span 4; }
.ktw-history-name-grid article:nth-child(4n+1) { box-shadow: inset 0 6px 0 var(--history-teal); }
.ktw-history-name-grid article:nth-child(4n+2) { box-shadow: inset 0 6px 0 var(--history-gold); }
.ktw-history-name-grid article:nth-child(4n+3) { box-shadow: inset 0 6px 0 var(--history-coral); }
.ktw-history-name-grid article:nth-child(4n+4) { box-shadow: inset 0 6px 0 var(--history-ink); }
.ktw-history-name-grid strong { display: block; margin-bottom: 8px; overflow-wrap: anywhere; font-size: 24px; }
.ktw-history-name-grid span { display: block; min-height: 42px; color: var(--history-teal-dark); font-size: 13px; font-weight: 800; }
.ktw-history-name-grid p { margin: 25px 0 0; color: var(--history-muted); font-size: 16px; }
.ktw-history-folklore { display: grid; margin-top: 56px; overflow: hidden; border-radius: 24px; background: var(--history-teal-dark); color: #fff; grid-template-columns: minmax(260px,.36fr) minmax(0,1fr); }
.ktw-history-folklore > div { position: relative; min-height: 340px; overflow: hidden; background: var(--history-pale); }
.ktw-history-folklore > div::before, .ktw-history-folklore > div i { position: absolute; border: 2px solid var(--history-teal); border-radius: 50%; content: ""; }
.ktw-history-folklore > div::before { top: 70px; left: 62px; width: 170px; height: 170px; }
.ktw-history-folklore > div i:nth-child(1) { top: 42px; left: 134px; width: 72px; height: 72px; background: var(--history-gold); }
.ktw-history-folklore > div i:nth-child(2) { top: 175px; left: 45px; width: 92px; height: 92px; background: #fff; }
.ktw-history-folklore > div i:nth-child(3) { top: 168px; left: 177px; width: 56px; height: 56px; background: var(--history-coral); }
.ktw-history-folklore section { display: flex; padding: 48px; flex-direction: column; justify-content: center; }
.ktw-history-folklore h2 { margin: 0 0 20px; color: #fff; font-size: clamp(31px,4vw,48px); line-height: 1.08; }
.ktw-history-folklore p { max-width: 760px; margin: 0; color: rgba(255,255,255,.86); font-size: 19px; line-height: 1.58; }

.ktw-history-research { background: #fff; }
.ktw-history-sources { border-top: 1px solid var(--history-line); border-bottom: 1px solid var(--history-line); }
.ktw-history-sources summary { display: flex; min-height: 82px; padding: 18px 4px; align-items: center; justify-content: space-between; font-size: 18px; font-weight: 850; cursor: pointer; gap: 20px; }
.ktw-history-sources summary small { color: var(--history-muted); font-size: 14px; font-weight: 650; }
.ktw-history-sources ol { display: grid; margin: 0; padding: 0 0 28px; list-style: none; gap: 0; }
.ktw-history-sources li { display: grid; padding: 22px 4px; border-top: 1px solid var(--history-line); align-items: center; grid-template-columns: minmax(0,1fr) auto; gap: 24px; }
.ktw-history-sources strong { display: block; margin-bottom: 4px; }
.ktw-history-sources p { margin: 0; color: var(--history-muted); font-size: 14px; }
.ktw-history-sources a { color: var(--history-teal-dark); font-weight: 800; text-decoration: underline; }
.ktw-history-next { display: grid; margin-top: 76px; padding: 48px; border-radius: 22px; align-items: end; grid-template-columns: minmax(0,1fr) auto; background: var(--history-sand); gap: 44px; }
.ktw-history-next span { color: var(--history-teal-dark); font-size: 13px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.ktw-history-next h2 { max-width: 720px; margin: 10px 0 10px; font-size: clamp(31px,4vw,48px); line-height: 1.05; }
.ktw-history-next p { max-width: 680px; margin: 0; color: var(--history-muted); }
.ktw-history-next a { display: inline-flex; min-height: 50px; padding: 12px 19px; border-radius: 999px; align-items: center; justify-content: center; background: var(--history-teal-dark); color: #fff; font-weight: 800; text-decoration: none; }
.ktw-history-next a:hover { background: var(--history-ink); }

@media (max-width: 960px) {
  .ktw-history-hero__grid { min-height: 0; padding-block: 60px; grid-template-columns: 1fr; gap: 46px; }
  .ktw-history-answer { min-height: 265px; }
  .ktw-history-key__grid { grid-template-columns: 1fr; }
  .ktw-history-key article { min-height: 0; border-right: 0; border-bottom: 1px solid var(--history-line); }
  .ktw-history-key article:last-child { border-bottom: 0; }
  .ktw-history-explorer { grid-template-columns: 1fr; }
  .ktw-history-map, .ktw-history-panels, .ktw-history-panels article { min-height: 500px; }
  .ktw-history-name-grid article { grid-column: span 6; }
}

@media (max-width: 640px) {
  .ktw-history-hero__grid { padding-block: 38px 48px; gap: 32px; }
  .ktw-history-hero h1 { font-size: 40px; line-height: 1.04; }
  .ktw-zh .ktw-history-hero h1 { font-size: 37px; line-height: 1.12; }
  .ktw-history-hero__copy > p { font-size: 18px; }
  .ktw-history-answer, .ktw-history--water .ktw-history-answer { min-height: 225px; padding: 28px; border-radius: 70px 18px 18px 18px; }
  .ktw-history-answer::before { width: 54px; height: 54px; border-width: 11px; }
  .ktw-history-answer > strong { font-size: 20px; }
  .ktw-history-atlas, .ktw-history-names, .ktw-history-research { padding-block: 62px; }
  .ktw-history-heading { margin-bottom: 32px; }
  .ktw-history-heading h2 { font-size: 34px; }
  .ktw-history-heading p { font-size: 17px; }
  .ktw-history-map { display: grid; min-height: 0; padding: 22px; grid-template-columns: 1fr 1fr; gap: 12px; }
  .ktw-history-map__field { opacity: .3; }
  .ktw-history-map__point { position: relative; top: auto; left: auto; width: 100%; max-width: none; min-height: 72px; padding-left: 34px; transform: none; }
  .ktw-history-map__point:last-child:nth-child(even) { grid-column: 1 / -1; }
  .ktw-history-map__point > span { left: 10px; }
  .ktw-history-map__point b { font-size: 12px; }
  .ktw-history--water .ktw-history-map { min-height: 0; padding: 22px; grid-template-columns: 1fr; grid-template-rows: auto; grid-template-areas: "message" "britain" "mexico" "households" "names" "origin"; gap: 12px; }
  .ktw-history--water .ktw-history-map::before, .ktw-history--water .ktw-history-map::after { display: none; }
  .ktw-history--water .ktw-history-map__message { padding-bottom: 14px; }
  .ktw-history--water .ktw-history-map__message strong { font-size: 27px; }
  .ktw-history--water .ktw-history-map__message span { font-size: 15px; }
  .ktw-history--water .ktw-history-map__point { min-height: 78px; padding: 17px 16px 16px 49px; }
  .ktw-history--water .ktw-history-map__point > span { left: 17px; }
  .ktw-history--water .ktw-history-map__point b { font-size: 16px; }
  .ktw-history--water .ktw-history-map__point small { font-size: 12px; }
  .ktw-history-panels, .ktw-history-panels article { min-height: 0; }
  .ktw-history-panels article { padding: 28px 23px; }
  .ktw-history-panels article > div { margin-bottom: 44px; }
  .ktw-history-panels h3 { margin: 0 0 18px; font-size: 32px; }
  .ktw-history-panels p { font-size: 17px; }
  .ktw-history-filter { display: grid; width: 100%; border-radius: 18px; grid-template-columns: 1fr 1fr; }
  .ktw-history-filter button { padding-inline: 9px; border-radius: 13px; font-size: 13px; }
  .ktw-history-timeline::before { left: 11px; }
  .ktw-history-timeline li { min-height: 0; padding: 0 0 34px 38px; grid-template-columns: 1fr; gap: 7px; }
  .ktw-history-timeline li::before { top: 5px; left: 3px; }
  .ktw-history-timeline li > span { padding: 0; text-align: left; }
  .ktw-history-timeline h3 { font-size: 23px; }
  .ktw-history-name-grid { grid-template-columns: 1fr; }
  .ktw-history-name-grid article { min-height: 0; grid-column: auto; }
  .ktw-history-name-grid span { min-height: 0; }
  .ktw-history-folklore { grid-template-columns: 1fr; }
  .ktw-history-folklore > div { min-height: 250px; }
  .ktw-history-folklore section { padding: 32px 25px; }
  .ktw-history-sources li { grid-template-columns: 1fr; gap: 8px; }
  .ktw-history-next { padding: 30px 24px; grid-template-columns: 1fr; gap: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  .ktw-history *, .ktw-history *::before, .ktw-history *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}