:root{
  --guide-bg:#f3f6f6;
  --guide-paper:#ffffff;
  --guide-ink:#0b2933;
  --guide-ink-soft:#163d48;
  --guide-text:#314b52;
  --guide-muted:#5c747a;
  --guide-rule:#c9d5d6;
  --guide-rule-strong:#8fa6aa;
  --guide-signal:#00a875;
  --guide-signal-text:#006b4b;
  --guide-sky:#1586b0;
  --guide-sky-text:#0a6688;
  --guide-warn:#9a4619;
  --guide-reading-width:46rem;
  --guide-heading-width:56rem;
  --guide-leading-body:1.85;
  --guide-space-section:clamp(56px,7vw,72px);
  --guide-space-block:clamp(24px,4vw,32px);
  --guide-focus:3px solid var(--guide-sky);
  --guide-ease:cubic-bezier(.22,1,.36,1);
}

body.theme-light{
  color:var(--guide-ink);
  background-color:var(--guide-bg);
  background-image:linear-gradient(90deg,rgba(11,41,51,.035) 1px,transparent 1px);
  background-size:clamp(54px,7vw,92px) 100%;
  font-variant-numeric:tabular-nums;
  text-rendering:optimizeLegibility;
}
body.theme-light :where(a,button):focus-visible{outline:var(--guide-focus);outline-offset:3px}
body.theme-light .language-option{display:inline-flex;align-items:center;min-height:44px}

.article-shell{max-width:1040px;margin:0 auto;padding:clamp(40px,5vw,64px) 24px 96px}
.breadcrumb{display:flex;align-items:center;gap:6px 9px;flex-wrap:wrap;margin:0 0 28px;color:var(--guide-muted);font-size:14px;line-height:1.55}
.breadcrumb a{text-decoration-thickness:1px;text-underline-offset:4px}
.article-header{padding-bottom:32px;border-bottom:3px solid var(--guide-ink)}
.article-header h1{max-width:var(--guide-heading-width);color:var(--guide-ink);font-size:clamp(38px,4.6vw,52px);font-weight:850;line-height:1.16;letter-spacing:-.035em;overflow-wrap:anywhere;text-wrap:balance}
.article-lede{max-width:var(--guide-reading-width);margin-top:20px;color:var(--guide-text);font-size:17px;line-height:1.82;text-wrap:pretty}
.article-meta{display:flex;gap:7px 22px;flex-wrap:wrap;margin-top:22px;color:var(--guide-muted);font-size:14px;line-height:1.55}
.article-header .eyebrow{margin-bottom:14px;color:var(--guide-sky-text);font-size:14px;letter-spacing:0;text-transform:none}
.article-body{max-width:var(--guide-reading-width);margin:40px auto 0}
.article-body :where(section[id],h2[id],h3[id]){scroll-margin-top:96px}
.article-body h2{margin-top:var(--guide-space-section);color:var(--guide-ink);font-size:clamp(27px,3.5vw,36px);font-weight:800;line-height:1.3;letter-spacing:-.025em;overflow-wrap:anywhere;text-wrap:balance}
.article-body>h2,.article-body>section>h2{padding-top:20px;border-top:2px solid var(--guide-ink)}
.article-body h3{margin-top:34px;color:var(--guide-ink);font-size:clamp(20px,2.4vw,23px);line-height:1.4;overflow-wrap:anywhere;text-wrap:balance}
.article-body p,.article-body li{max-width:72ch;color:var(--guide-text);line-height:var(--guide-leading-body);text-wrap:pretty}
.article-body p+p{margin-top:1em}
.article-body ul,.article-body ol{margin-block:18px 0;padding-left:24px}
.article-body li+li{margin-top:8px}
.article-body :where(code,a,strong){overflow-wrap:anywhere}

.answer-box,.formula-box,.source-note{margin:var(--guide-space-block) 0;padding:24px 26px;border-radius:2px}
.answer-box{border:0;background:var(--guide-ink);color:#f7fbfb}
.answer-box h2,.answer-box h3{margin-top:0;padding-top:0;border:0;color:#fff}
.answer-box p{color:#dbe8e9}
.term-nowrap{white-space:nowrap}
.formula-box{overflow-x:auto;border:1px solid #284c55;background:#102f38;color:#f8fafc}
.formula-box p{color:#e3eff0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.source-note{border:1px solid var(--guide-rule);background:#e8eeee;font-size:14px}
.source-note p{color:#3e575d}

.article-table-wrap{overflow-x:auto;margin:var(--guide-space-block) 0;border:1px solid var(--guide-rule-strong);border-radius:0;background:var(--guide-paper);overscroll-behavior-inline:contain;scrollbar-color:var(--guide-rule-strong) transparent;scrollbar-width:thin}
.article-table{width:100%;min-width:640px;border-collapse:collapse;background:var(--guide-paper)}
.article-table th,.article-table td{padding:14px 17px;border-right:1px solid var(--guide-rule);border-bottom:1px solid var(--guide-rule);line-height:1.65;text-align:left;vertical-align:top}
.article-table--nowrap :is(th,td){white-space:nowrap}
.article-table th:last-child,.article-table td:last-child{border-right:0}
.article-table th{background:var(--guide-ink);color:#f7fbfb;font-size:14px}
.article-table tbody tr:nth-child(even){background:#f1f5f4}
.article-table tr:last-child td{border-bottom:0}

.article-toc{margin:32px 0;padding:20px 0;border-block:1px solid var(--guide-rule-strong)}
.article-toc h2{margin:0 0 12px;padding:0;border:0;font-size:18px}
.article-toc-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 28px;margin:0;padding-left:22px}
.article-toc-list li+li{margin-top:0}
.article-toc a{display:inline-block;padding-block:2px;text-decoration-color:var(--guide-rule-strong);text-underline-offset:4px}

.example-box,.caution-box{margin:var(--guide-space-block) 0;padding:22px 24px;border-radius:2px}
.example-box{border:1px solid #87b7a8;background:#e7f3ef}
.caution-box{border:1px solid #c59a80;background:#f5ede8}
.example-box h3,.caution-box h3{margin-top:0}
.caution-box h3{color:var(--guide-warn)}

.tile-figure{
  max-width:100%;
  min-width:0;
  margin:var(--guide-space-block) 0;
  padding:20px 0 16px;
  overflow:hidden;
  border-block:1px solid var(--guide-rule-strong);
}
.tile-row{
  display:flex;
  align-items:flex-end;
  gap:7px;
  width:100%;
  max-width:100%;
  padding:4px 4px 10px;
  overflow-x:auto;
  overflow-y:hidden;
  box-sizing:border-box;
  overscroll-behavior-inline:contain;
  scrollbar-color:var(--guide-rule-strong) transparent;
  scrollbar-width:thin;
  -webkit-overflow-scrolling:touch;
}
.tile-row:focus-visible{
  outline:var(--guide-focus);
  outline-offset:2px;
}
.mahjong-tile{
  display:grid;
  flex:0 0 clamp(42px,7vw,56px);
  width:clamp(42px,7vw,56px);
  aspect-ratio:3 / 4;
  padding:4px;
  overflow:hidden;
  box-sizing:border-box;
  border:1px solid #8fa2a5;
  border-radius:4px 4px 3px 3px;
  background:#fff;
  box-shadow:0 3px 0 #a8b7b9;
}
.mahjong-tile img{
  display:block;
  width:100%;
  height:100%;
  object-fit:contain;
}
.mahjong-tile.winning-tile{
  flex-basis:clamp(56px,9.333vw,75px);
  width:clamp(56px,9.333vw,75px);
  aspect-ratio:4 / 3;
}
.mahjong-tile.tile-choice.winning-tile{
  padding:4px;
  justify-content:center;
}
.winning-tile img{
  width:auto;
  height:100%;
  justify-self:center;
  align-self:center;
  transform:rotate(90deg) scale(1.333333);
  transform-origin:center;
}
.tile-gap{flex:0 0 clamp(7px,1.5vw,16px)}
.tile-note{
  margin:14px 4px 0;
  padding-top:12px;
  border-top:1px solid var(--guide-rule-strong);
  color:var(--guide-muted);
  font-size:14px;
  line-height:1.7;
}
.tile-choice{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:7px 11px;
  border:1px solid var(--guide-signal);
  border-radius:2px;
  background:var(--guide-paper);
  color:var(--guide-ink);
  font-size:14px;
  font-weight:800;
}
.mahjong-tile.tile-choice:not(.winning-tile){
  display:grid;
  padding:4px;
}
.tile-choice:focus-visible,
.app-recommendation-actions a:focus-visible{
  outline:var(--guide-focus);
  outline-offset:3px;
}
.score-tile-figure{
  padding-inline:14px;
  box-sizing:border-box;
  background:linear-gradient(90deg,rgba(0,168,117,.055),transparent 78%);
}
.score-tile-figure .tile-row{gap:3px}
.score-tile-figure .mahjong-tile{flex-basis:42px;width:42px}
.score-tile-figure .winning-tile{flex-basis:56px;width:56px}
.score-tile-figure .tile-gap{flex-basis:6px}
.score-tile-figure .open-meld{gap:3px}
.tile-scroll-hint{display:none}
.score-breakdown{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  margin:10px 4px 0;
  border-block:1px solid var(--guide-rule-strong);
  background:rgba(255,255,255,.78);
}
.score-breakdown-item{min-width:0;padding:13px 14px}
.score-breakdown-item+.score-breakdown-item{border-left:1px solid var(--guide-rule)}
.score-breakdown-label{
  display:block;
  color:var(--guide-muted);
  font-size:12px;
  font-weight:800;
  letter-spacing:.08em;
}
.score-breakdown-value{
  display:block;
  margin-top:5px;
  color:var(--guide-ink);
  font-size:14px;
  font-weight:800;
  line-height:1.55;
}
.open-meld{
  position:relative;
  display:flex;
  flex:0 0 auto;
  align-items:flex-end;
  gap:7px;
  padding-top:21px;
}
.open-meld-label{
  position:absolute;
  top:0;
  left:0;
  color:var(--guide-signal-text);
  font-size:12px;
  font-weight:850;
  letter-spacing:.08em;
}
.article-app-recommendation{
  position:relative;
  margin:40px 0;
  padding:28px clamp(22px,4vw,34px);
  border-block:2px solid var(--guide-ink);
  background:var(--guide-paper);
}
.article-app-recommendation::before{
  position:absolute;
  top:-2px;
  left:0;
  width:clamp(54px,12vw,104px);
  height:4px;
  background:var(--guide-signal);
  content:"";
}
.article-app-recommendation h2,
.article-app-recommendation h3{
  margin:0 0 10px;
  padding:0;
  border:0;
  color:var(--guide-ink);
  font-size:clamp(21px,3vw,27px);
}
.article-app-recommendation p{margin:0;color:var(--guide-text);line-height:1.78}
.app-recommendation-copy{min-width:0}
.app-recommendation-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) clamp(150px,22vw,220px);
  align-items:end;
  gap:clamp(24px,5vw,48px);
}
.article-app-recommendation-download .app-recommendation-layout{
  grid-template-columns:1fr;
  gap:0;
}
.app-brand-lockup{
  display:flex;
  align-items:center;
  gap:12px;
  margin:0 0 18px;
  color:var(--guide-ink);
  font-size:15px;
  font-weight:850;
}
.app-recommendation-visual{
  display:block;
  width:46px;
  height:46px;
  box-sizing:border-box;
  border:1px solid var(--guide-rule);
  border-radius:12px;
  background:var(--guide-paper);
  box-shadow:0 8px 20px rgba(11,41,51,.12);
  object-fit:cover;
}
.app-brand-icon{
  width:46px;
  height:46px;
  flex:0 0 46px;
  border:1px solid var(--guide-rule);
  border-radius:12px;
  background:#fff;
  box-shadow:0 8px 20px rgba(11,41,51,.12);
  object-fit:cover;
}
.app-character{
  display:block;
  width:100%;
  height:auto;
  box-sizing:border-box;
  justify-self:end;
  border:1px solid var(--guide-rule);
  border-radius:2px;
  background:#fff;
  box-shadow:0 16px 36px rgba(11,41,51,.14);
}
.app-recommendation-actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:20px;
}
.app-recommendation-actions a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:9px 15px;
  border:1px solid var(--guide-ink);
  border-radius:2px;
  background:var(--guide-ink);
  color:#fff;
  font-size:14px;
  font-weight:800;
  text-decoration:none;
  transition:background-color .2s var(--guide-ease),border-color .2s var(--guide-ease),color .2s var(--guide-ease),transform .2s var(--guide-ease);
}
.app-recommendation-actions a+ a{
  border-color:var(--guide-signal);
  background:var(--guide-paper);
  color:var(--guide-ink);
}
.article-app-recommendation-download .app-recommendation-actions{
  gap:12px 18px;
  margin-top:18px;
}
.article-app-recommendation-download .app-recommendation-actions a{
  min-height:0;
  padding:0;
  border:0;
  background:transparent;
  color:var(--guide-muted);
  font-size:13px;
  text-decoration:underline;
  text-underline-offset:4px;
}

.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:22px;border-top:2px solid var(--guide-ink)}
.related-card{position:relative;display:block;min-height:128px;padding:20px 44px 20px 0;border-bottom:1px solid var(--guide-rule);background:transparent;text-decoration:none}
.related-card:nth-child(odd){padding-right:28px;border-right:1px solid var(--guide-rule)}
.related-card:nth-child(even){padding-left:28px}
.related-card::after{position:absolute;right:10px;top:22px;color:var(--guide-signal);content:"↗";font-size:20px;transition:transform .24s var(--guide-ease)}
.related-card:focus-visible{outline:var(--guide-focus);outline-offset:4px}
.related-card:hover::after{transform:translate(4px,-4px)}
.related-card strong{display:block;color:var(--guide-ink);font-size:17px}
.related-card span{display:block;margin-top:7px;color:var(--guide-muted);font-size:14px}
.article-cta{
  display:grid;
  grid-template-columns:minmax(0,1fr) clamp(190px,28vw,250px);
  align-items:center;
  gap:clamp(28px,5vw,54px);
  margin-top:56px;
  padding:32px;
  border-radius:2px;
  background:var(--guide-ink);
  color:#f8fbfb;
}
.article-cta-copy{min-width:0}
.article-cta-visual{
  display:block;
  width:100%;
  height:auto;
  box-sizing:border-box;
  justify-self:end;
  border:1px solid #537078;
  border-radius:2px;
  background:var(--guide-paper);
  box-shadow:0 18px 42px rgba(0,0,0,.22);
}
.article-cta .app-brand-lockup{margin-bottom:20px;color:#fff}
.article-cta .app-brand-icon{border-color:#537078;box-shadow:none}
.article-cta h2{margin-top:0;padding:0;border:0;color:#fff}
.article-cta p{color:#cfe0e2;line-height:1.78}
.article-cta a{color:#65e4b9;font-weight:800;text-underline-offset:4px}
.article-cta .app-recommendation-actions a:nth-child(-n+2){
  border-color:#65e4b9;
  background:#65e4b9;
  color:var(--guide-ink);
}
.article-cta .app-recommendation-actions a:nth-child(n+3){
  border-color:#65e4b9;
  background:transparent;
  color:#65e4b9;
}
.article-sources{margin-top:52px;padding-top:22px;border-top:1px solid var(--guide-rule)}
.article-sources h2{margin-top:0;font-size:22px}

.app-recommendation-layout--text{grid-template-columns:1fr}
.article-cta--text{grid-template-columns:1fr}

.average-rank-figure{
  margin:32px 0;
  padding:24px;
  border:1px solid var(--guide-rule-strong);
  background:var(--guide-paper);
}
.average-rank-figure figcaption{
  margin-bottom:22px;
  color:var(--guide-ink);
  font-weight:800;
  line-height:1.7;
}
.average-rank-chart{display:grid;gap:14px}
.average-rank-chart__row{
  display:grid;
  grid-template-columns:minmax(92px,120px) minmax(120px,1fr) minmax(92px,auto);
  gap:14px;
  align-items:center;
}
.average-rank-chart__label,.average-rank-chart__value{color:var(--guide-ink);font-size:14px;font-weight:800}
.average-rank-chart__value{text-align:right;white-space:nowrap}
.average-rank-chart__track{
  height:18px;
  overflow:hidden;
  border-radius:999px;
  background:var(--guide-rule);
}
.average-rank-chart__bar{
  display:block;
  width:var(--bar-size);
  height:100%;
  border-radius:inherit;
  background:var(--guide-signal);
}

@media(max-width:640px){
  .average-rank-figure{padding:20px 18px}
  .average-rank-chart__row{grid-template-columns:1fr auto;gap:7px 14px}
  .average-rank-chart__track{grid-column:1/-1;grid-row:2}
}

.beginner-course-shell{max-width:1020px}
.beginner-masthead{position:relative;padding-top:28px}
.beginner-issue-line{
  display:flex;
  justify-content:space-between;
  gap:18px;
  margin-bottom:32px;
  padding-block:8px;
  border-block:1px solid var(--guide-rule-strong);
  color:var(--guide-muted);
  font-size:14px;
  font-weight:850;
  letter-spacing:.08em;
}
.beginner-masthead h1{max-width:var(--guide-heading-width);font-size:clamp(42px,6vw,64px)}
.beginner-editorial-note{
  display:grid;
  grid-template-columns:140px 1fr;
  gap:24px;
  margin:34px 0;
  padding:22px 0;
  border-block:2px solid var(--guide-ink);
}
.beginner-editorial-note strong{color:var(--guide-signal-text);font-size:14px;letter-spacing:.04em}
.beginner-editorial-note p{margin:0}
.figure-kicker{
  margin:0 4px 14px;
  color:var(--guide-sky-text);
  font-size:13px;
  font-weight:900;
  letter-spacing:.07em;
  text-transform:uppercase;
}
.beginner-tile-atlas .tile-row+.tile-row,
.beginner-figure .tile-row+.tile-row{margin-top:8px}
.term-index{margin:32px 0;border-top:2px solid var(--guide-ink)}
.term-index>div{
  display:grid;
  grid-template-columns:120px 1fr;
  gap:22px;
  padding:16px 0;
  border-bottom:1px solid var(--guide-rule);
}
.term-index dt,.term-index dd{margin:0}
.term-index strong{color:var(--guide-ink)}
.term-index span,.term-index dd{color:var(--guide-text)}
.flow-line,.beginner-checklist{margin:32px 0;padding:0!important;list-style:none}
.flow-line li,.beginner-checklist li{
  display:grid;
  grid-template-columns:minmax(145px,.45fr) minmax(0,1fr);
  gap:24px;
  max-width:none;
  margin:0;
  padding:18px 0;
  border-top:1px solid var(--guide-rule);
}
.flow-line li:last-child,.beginner-checklist li:last-child{border-bottom:1px solid var(--guide-rule)}
.flow-line strong,.beginner-checklist strong{color:var(--guide-ink)}
.flow-line span{color:var(--guide-text)}
.roadmap-ledger{margin:32px 0;border-top:3px solid var(--guide-ink)}
.roadmap-ledger>div{
  display:grid;
  grid-template-columns:74px minmax(180px,.55fr) minmax(0,1fr);
  gap:22px;
  padding:20px 0;
  border-bottom:1px solid var(--guide-rule);
}
.roadmap-ledger span{color:var(--guide-signal-text);font-size:13px;font-weight:900;letter-spacing:.06em}
.roadmap-ledger strong{color:var(--guide-ink)}
.roadmap-ledger p{margin:0}
.visible-faq h3{padding-top:20px;border-top:1px solid var(--guide-rule)}
.article-cta .cta-kicker{margin:0 0 12px;color:#65e4b9;font-size:13px;font-weight:900;letter-spacing:.08em}
.article-cta .store-badges,.article-app-recommendation .store-badges{margin-top:24px;flex-wrap:nowrap}
.article-cta .store-badges a,.article-app-recommendation .store-badges a{color:inherit}

.guide-index-shell{max-width:1160px}
.guide-index-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);min-height:520px;padding:clamp(38px,5vw,64px);border:0;background:var(--guide-ink);color:#f8fbfb}
.guide-index-copy{align-self:center}
.guide-index-kicker{margin:0 0 28px;color:#72d6b5;font-size:14px;font-weight:800}
.guide-index-hero h1{margin:0;color:#fff;font-size:clamp(46px,6vw,76px);letter-spacing:-.04em}
.guide-hero-statement{max-width:12em;margin:16px 0 0;color:#fff;font-size:clamp(28px,3.5vw,42px);font-weight:800;line-height:1.28;letter-spacing:-.03em;text-wrap:balance}
:lang(ja) .guide-hero-statement,
:lang(ko) .guide-hero-statement,
:lang(zh-Hans) .guide-hero-statement,
:lang(zh-Hant) .guide-hero-statement{word-break:keep-all}
.guide-index-hero .article-lede{margin-top:24px;color:#c9dadd;font-size:17px}
.guide-hero-visual{position:relative;align-self:stretch;min-height:390px;margin:0 0 0 clamp(18px,4vw,50px);overflow:hidden;border:1px solid #537078;background:#edf3f2}
.guide-hero-visual img{width:100%;height:100%;object-fit:cover;object-position:50% 7%}
.guide-hero-tab{position:absolute;top:0;left:0;z-index:2;padding:10px 14px;background:var(--guide-signal);color:#062921;font-size:12px;font-weight:900;letter-spacing:.04em}
.guide-hero-visual figcaption{position:absolute;right:0;bottom:0;left:0;display:flex;justify-content:space-between;gap:18px;padding:15px 18px;background:rgba(11,41,51,.94);color:#fff;font-size:14px}
.guide-hero-visual figcaption span{color:#bfd1d4}

.guide-index-intro{display:grid;grid-template-columns:minmax(230px,.7fr) minmax(0,1.3fr);gap:clamp(28px,5vw,64px);margin:0;padding:40px 0;border-bottom:1px solid var(--guide-rule-strong);background:transparent;color:var(--guide-ink)}
.guide-index-intro h2{font-size:clamp(24px,3vw,34px)}
.guide-index-intro p{align-self:end;color:var(--guide-text)}
.guide-category{margin-top:clamp(64px,8vw,96px);padding-top:26px;border-top:3px solid var(--guide-ink)}
.guide-category-layout{display:grid;grid-template-columns:minmax(220px,.72fr) minmax(0,1.5fr);gap:clamp(34px,6vw,84px)}
.guide-category-heading{align-self:start}
.guide-category-name{margin:0 0 16px;color:var(--guide-signal-text);font-size:14px;font-weight:900}
.guide-category-heading h2{margin:0;color:var(--guide-ink);font-size:clamp(29px,3.5vw,42px);letter-spacing:-.035em;line-height:1.28;overflow-wrap:anywhere;text-wrap:balance}
.guide-category-heading>p:last-child{margin-top:20px;color:var(--guide-text);font-size:15px}
.guide-card-grid{border-top:1px solid var(--guide-rule-strong)}
.guide-card{position:relative;padding:24px 54px 25px 0;border-bottom:1px solid var(--guide-rule-strong)}
.guide-card-label{color:var(--guide-sky-text);font-size:14px;font-weight:800}
.guide-card h3{margin:8px 0 9px;color:var(--guide-ink);font-size:clamp(22px,2.6vw,30px);letter-spacing:-.02em;line-height:1.4;transition:transform .24s cubic-bezier(.22,1,.36,1)}
.guide-card h3 a{color:inherit;text-decoration:none}
.guide-card h3 a::after{position:absolute;inset:0;content:""}
.guide-card h3 a:focus-visible{outline:3px solid var(--guide-sky);outline-offset:5px}
.guide-card p{margin:0;max-width:62ch;color:var(--guide-text);font-size:15px}
.guide-card-action{display:block;margin-top:14px;color:var(--guide-ink);font-size:14px;font-weight:800}
.guide-card-action b{display:inline-block;margin-left:5px;color:var(--guide-signal);font-size:17px;transition:transform .24s cubic-bezier(.22,1,.36,1)}
.guide-card:hover h3{transform:translateX(4px)}
.guide-card:hover .guide-card-action b{transform:translateX(4px)}
.guide-card-featured{background:linear-gradient(90deg,rgba(0,168,117,.07),transparent 72%)}
.guide-editorial-note{display:grid;grid-template-columns:220px 1fr;gap:36px;margin-top:100px;padding:30px;border-color:var(--guide-ink);background:var(--guide-ink)}
.guide-editorial-note h2{margin:0;color:#fff;font-size:22px}
.guide-editorial-note p{margin:0;color:#cfe0e2}
.guide-editorial-note a{color:#72e5bc;text-underline-offset:4px}

@media(max-width:860px){
  .guide-index-hero{grid-template-columns:1fr;min-height:0}
  .guide-hero-visual{height:400px;min-height:0;margin:34px 0 0}
  .guide-category-layout{grid-template-columns:1fr}
  .guide-category-heading{display:grid;grid-template-columns:minmax(180px,.75fr) minmax(0,1.25fr);gap:28px}
  .guide-category-name{grid-column:1/-1;margin-bottom:0}
  .guide-category-heading>p:last-child{margin-top:0}
}

@media(max-width:760px){
  .article-cta .appstore-badge.big img,.article-cta .googleplay-badge.big img,
  .article-app-recommendation .appstore-badge.big img,.article-app-recommendation .googleplay-badge.big img{height:48px}
}

@media(max-width:700px){
  body.theme-light{background-image:none}
  .article-shell{padding:30px 18px 70px}
  .breadcrumb{margin-bottom:24px}
  .article-header{padding-bottom:28px}
  .article-header h1{font-size:clamp(29px,8vw,32px);line-height:1.24;letter-spacing:-.02em}
  .article-lede{margin-top:18px;font-size:16px;line-height:1.8}
  .article-meta{gap:4px;margin-top:20px}
  .article-header .eyebrow{margin-bottom:12px}
  .article-body{margin-top:30px}
  .article-body h2{margin-top:52px;padding-top:18px;font-size:clamp(25px,7.4vw,31px);line-height:1.35}
  .article-body h3{margin-top:30px;font-size:20px}
  .article-app-recommendation h2,.article-cta h2{margin-top:0}
  .article-meta{display:grid;gap:5px}
  .article-toc-list{grid-template-columns:1fr}
  .answer-box,.formula-box,.source-note,.example-box,.caution-box{padding:20px 18px}
  .tile-figure{margin-inline:0;padding-top:18px}
  .tile-row{padding-inline:2px}
  .mahjong-tile{flex-basis:44px;width:44px}
  .score-tile-figure{padding-inline:10px}
  .tile-scroll-hint{
    display:block;
    margin:0 2px 8px;
    color:var(--guide-signal-text);
    font-size:12px;
    font-weight:800;
  }
  .score-breakdown{grid-template-columns:1fr}
  .score-breakdown-item+.score-breakdown-item{border-top:1px solid var(--guide-rule);border-left:0}
  .app-recommendation-actions{display:grid;grid-template-columns:1fr}
  .app-recommendation-actions a{width:100%;box-sizing:border-box}
  .related-grid{grid-template-columns:1fr}
  .related-card:nth-child(odd){padding-right:44px;border-right:0}
  .related-card:nth-child(even){padding-left:0}
  .beginner-issue-line{margin-bottom:32px}
  .beginner-masthead{padding-top:24px}
  .beginner-masthead h1{font-size:clamp(34px,10vw,40px)}
  .beginner-editorial-note{grid-template-columns:1fr;gap:8px}
  .figure-kicker{font-size:14px;letter-spacing:.04em}
  .term-index>div,.flow-line li,.beginner-checklist li,.roadmap-ledger>div{grid-template-columns:1fr;gap:7px}
  .roadmap-ledger>div{padding-block:18px}
  .article-app-recommendation{padding:24px 18px}
  .app-recommendation-layout{grid-template-columns:1fr;gap:20px}
  .app-character{max-width:180px;justify-self:end}
  .article-cta{
    grid-template-columns:1fr;
    gap:24px;
    margin-inline:-18px;
    padding:28px 18px;
  }
  .article-cta-visual{
    width:min(100%,220px);
  }
  .article-cta .app-character{max-width:220px;justify-self:center}
  .guide-index-shell{padding-inline:14px}
  .guide-index-hero{padding:30px 24px}
  .guide-index-hero h1{font-size:clamp(40px,11.5vw,48px);word-break:keep-all}
  .guide-hero-statement{max-width:12em;font-size:clamp(27px,8.6vw,34px)}
  :lang(en) .guide-index-hero h1{font-size:clamp(36px,9.5vw,42px);line-height:1.14}
  :lang(en) .guide-hero-statement{font-size:clamp(25px,7.5vw,30px);line-height:1.32}
  .guide-hero-visual{height:330px;margin-top:28px}
  .guide-index-intro{grid-template-columns:1fr;padding:32px 8px}
  .guide-category{margin-top:62px}
  .guide-category-layout,.guide-category-heading{display:block}
  .guide-category-heading h2 br{display:none}
  .guide-category-heading>p:last-child{margin-top:14px}
  .guide-card{padding:22px 40px 22px 0}
  .guide-editorial-note{grid-template-columns:1fr;margin-top:64px;padding:24px 20px}
}

@media(max-width:420px){
  .article-app-recommendation-download .appstore-badge.big img,
  .article-app-recommendation-download .googleplay-badge.big img{height:40px}
}

@media(max-width:360px){
  .article-cta .store-badges,.article-app-recommendation .store-badges{gap:8px}
  .article-cta .appstore-badge.big img,.article-cta .googleplay-badge.big img,
  .article-app-recommendation .appstore-badge.big img,.article-app-recommendation .googleplay-badge.big img{height:40px}
}

@media(prefers-reduced-motion:reduce){
  .tile-row{scroll-behavior:auto}
  .guide-card h3,.guide-card-action b,.related-card::after,.app-recommendation-actions a{transition:none}
  .guide-card:hover h3,.guide-card:hover .guide-card-action b,.related-card:hover::after{transform:none}
}

/* Japanese guide index: quiet editorial directory */
body.theme-light.guide-index-page{
  --guide-index-bg:#fbfcfa;
  --guide-index-accent:#08745a;
  --guide-index-rule:#dce3df;
  background-color:var(--guide-index-bg);
  background-image:none;
  font-family:"Meiryo","メイリオ",sans-serif;
}
body.guide-index-page ::selection{
  background:#c7eee1;
  color:var(--guide-ink);
}
:lang(ja) .guide-index-shell{
  max-width:1040px;
  padding-top:clamp(38px,5vw,56px);
}
:lang(ja) .guide-index-shell .breadcrumb{
  margin-bottom:clamp(38px,5vw,56px);
}
:lang(ja) .guide-index-hero{
  display:block;
  max-width:46rem;
  min-height:0;
  padding:0 0 clamp(44px,6vw,64px);
  border-bottom:1px solid var(--guide-index-rule);
  background:transparent;
  color:var(--guide-ink);
}
:lang(ja) .guide-index-hero h1{
  margin:0;
  color:var(--guide-ink);
  font-size:clamp(46px,6vw,68px);
  font-weight:700;
  letter-spacing:-.04em;
  line-height:1.18;
}
:lang(ja) .guide-index-hero .article-lede{
  max-width:40rem;
  margin-top:22px;
  color:var(--guide-text);
  font-size:clamp(16px,1.8vw,18px);
  line-height:1.9;
}
:lang(ja) .guide-category{
  margin-top:clamp(56px,7vw,80px);
  padding-top:clamp(24px,3vw,32px);
  border-top:1px solid var(--guide-index-rule);
}
:lang(ja) .guide-category-layout{
  display:grid;
  grid-template-columns:minmax(190px,.62fr) minmax(0,1.38fr);
  gap:clamp(40px,7vw,80px);
}
:lang(ja) .guide-category-heading{
  display:block;
  align-self:start;
}
:lang(ja) .guide-category-name{
  margin:0 0 12px;
  color:var(--guide-index-accent);
  font-size:13px;
  font-weight:800;
  letter-spacing:.02em;
}
:lang(ja) .guide-category-heading h2{
  margin:0;
  color:var(--guide-ink);
  font-size:clamp(25px,3vw,32px);
  font-weight:700;
  letter-spacing:-.025em;
  line-height:1.42;
}
:lang(ja) .guide-category-heading>p:last-child{
  margin-top:16px;
  color:var(--guide-muted);
  font-size:14px;
  line-height:1.8;
}
:lang(ja) .guide-card-grid{
  border-top:0;
}
:lang(ja) .guide-card{
  position:relative;
  padding:24px 52px 25px 0;
  border-bottom:1px solid var(--guide-index-rule);
  background:transparent;
}
:lang(ja) .guide-card:first-child{
  padding-top:0;
}
:lang(ja) .guide-card::after{
  position:absolute;
  top:34px;
  right:6px;
  width:10px;
  height:10px;
  border-top:1.5px solid currentColor;
  border-right:1.5px solid currentColor;
  color:var(--guide-index-accent);
  content:"";
  pointer-events:none;
  transform:rotate(45deg);
  transition:transform .22s var(--guide-ease);
}
:lang(ja) .guide-card:first-child::after{
  top:10px;
}
:lang(ja) .guide-card-label{
  color:var(--guide-index-accent);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
}
:lang(ja) .guide-card h3{
  margin:7px 0 8px;
  color:var(--guide-ink);
  font-size:clamp(20px,2.2vw,24px);
  font-weight:750;
  letter-spacing:-.02em;
  line-height:1.45;
  transition:color .2s var(--guide-ease);
}
:lang(ja) .guide-card p{
  max-width:62ch;
  margin:0;
  color:var(--guide-muted);
  font-size:14px;
  line-height:1.8;
}
:lang(ja) .guide-card:hover h3{
  color:var(--guide-index-accent);
  transform:none;
}
:lang(ja) .guide-card:hover::after{
  transform:translateX(4px) rotate(45deg);
}
:lang(ja) .guide-card-featured{
  background:transparent;
}
:lang(ja) .guide-editorial-note{
  display:grid;
  grid-template-columns:minmax(160px,220px) minmax(0,1fr);
  gap:clamp(28px,5vw,56px);
  margin:clamp(72px,9vw,104px) 0 0;
  padding:28px 0 0;
  border:0;
  border-top:1px solid var(--guide-index-rule);
  background:transparent;
}
:lang(ja) .guide-editorial-note h2{
  margin:0;
  color:var(--guide-ink);
  font-size:20px;
  font-weight:700;
}
:lang(ja) .guide-editorial-note p{
  margin:0;
  color:var(--guide-muted);
  font-size:13px;
  line-height:1.9;
}
:lang(ja) .guide-editorial-note a{
  color:var(--guide-ink);
  text-decoration-color:var(--guide-index-accent);
  text-underline-offset:4px;
}

@media(max-width:860px){
  :lang(ja) .guide-category-layout{
    grid-template-columns:1fr;
    gap:24px;
  }
  :lang(ja) .guide-category-heading{
    max-width:38rem;
  }
  :lang(ja) .guide-category-heading>p:last-child{
    max-width:38rem;
  }
}

/* Rule sheets and scoring-reference pages */
.template-actions{
  display:flex;
  align-items:center;
  gap:10px 18px;
  flex-wrap:wrap;
  margin:24px 0 14px;
  color:var(--guide-muted);
  font-size:14px;
}
.template-download-link{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:9px 15px;
  border:1px solid var(--guide-ink);
  background:var(--guide-ink);
  color:#fff;
  font-weight:800;
  text-decoration:none;
}
.rule-sheet{min-width:760px}
.rule-sheet caption,.score-table caption{
  padding:13px 16px;
  border-bottom:1px solid var(--guide-rule-strong);
  background:#e8eeee;
  color:var(--guide-ink);
  font-size:15px;
  font-weight:850;
  text-align:left;
}
.rule-sheet tbody th{
  width:7.5rem;
  background:#e1ece8;
  color:var(--guide-ink);
  vertical-align:top;
}
.rule-sheet-blank{
  min-width:10rem;
  color:var(--guide-muted);
  letter-spacing:.06em;
}
.rule-example-formula p{font-size:clamp(16px,3vw,20px);font-weight:800}
.score-table-scroll{overflow-x:auto}
.sanma-rule-table{min-width:720px}
.sanma-north-figure .tile-row{overflow:visible}
.rule-option-list p{margin:0;font-weight:700}
.score-table-scroll{
  width:100%;
  margin:var(--guide-space-block) 0;
  overflow-x:auto;
  border:1px solid var(--guide-rule-strong);
  background:var(--guide-paper);
  overscroll-behavior-inline:contain;
  scrollbar-color:var(--guide-rule-strong) transparent;
  scrollbar-width:thin;
  -webkit-overflow-scrolling:touch;
}
.score-table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  background:var(--guide-paper);
  font-variant-numeric:tabular-nums;
}
.score-table :is(th,td){
  padding:12px 13px;
  border-right:1px solid var(--guide-rule);
  border-bottom:1px solid var(--guide-rule);
  line-height:1.45;
  text-align:right;
  vertical-align:middle;
  white-space:nowrap;
}
.score-table :is(th,td):last-child{border-right:0}
.score-table thead th{background:var(--guide-ink);color:#fff;font-size:14px;text-align:center}
.score-table tbody th{position:sticky;left:0;z-index:1;background:#e1ece8;color:var(--guide-ink);text-align:center}
.score-table tbody tr:nth-child(even) td{background:#f4f7f6}
.score-table tbody tr:last-child :is(th,td){border-bottom:0}
.score-table--dealer thead th{background:#164d5b}
.score-table--limits{min-width:720px}
.score-table--limits tbody th{min-width:5.5rem}
.score-table--sanma{min-width:700px}
.score-line{display:block}
.score-line+.score-line{margin-top:3px;padding-top:3px;border-top:1px dotted var(--guide-rule-strong);color:var(--guide-sky-text)}
.score-line--muted{color:var(--guide-muted)}
.score-limit-cell{background:#e7f3ef!important;color:var(--guide-signal-text);font-weight:850;text-align:center!important}
.score-table-article .article-body{max-width:52rem}

@media(max-width:640px){
  .template-actions{align-items:flex-start;gap:9px;margin-top:20px}
  .template-download-link{padding:9px 14px}
  .rule-sheet th,.rule-sheet td{padding:11px 13px}
  .score-table-article .article-body{max-width:100%}
  .score-table{min-width:700px;font-size:13px}
  .score-table :is(th,td){padding:10px 11px}
  .score-table caption{padding:11px 13px;font-size:14px}
}

@media print{
  body:has(.rule-sheet) :where(.site-header,.breadcrumb,.article-header,.answer-box,.article-toc,.article-body>section:not(#template),.article-app-recommendation,.related-guides,.article-cta,.site-footer){display:none!important}
  body:has(.rule-sheet),body:has(.rule-sheet) .article-shell,body:has(.rule-sheet) .article-body{max-width:none;margin:0;padding:0;background:#fff}
  body:has(.rule-sheet) #template>p,body:has(.rule-sheet) .template-actions{display:none!important}
  body:has(.rule-sheet) #template h2{margin:0 0 12px;padding:0;border:0;font-size:18pt}
  body:has(.rule-sheet) .article-table-wrap{overflow:visible;border-color:#333}
  .rule-sheet{min-width:0;font-size:9pt}
  .rule-sheet th,.rule-sheet td{padding:5pt 6pt;border-color:#777}
  .rule-sheet th{print-color-adjust:exact;-webkit-print-color-adjust:exact}
}

@media(max-width:700px){
  :lang(ja) .guide-index-shell{
    padding:30px 20px 72px;
  }
  :lang(ja) .guide-index-shell .breadcrumb{
    margin-bottom:34px;
  }
  :lang(ja) .guide-index-hero{
    padding:0 0 38px;
  }
  :lang(ja) .guide-index-hero h1{
    font-size:clamp(40px,12vw,52px);
  }
  :lang(ja) .guide-index-hero .article-lede{
    margin-top:18px;
    font-size:16px;
    line-height:1.85;
  }
  :lang(ja) .guide-category{
    margin-top:52px;
    padding-top:22px;
  }
  :lang(ja) .guide-category-heading h2{
    font-size:clamp(24px,7.4vw,29px);
  }
  :lang(ja) .guide-card{
    padding:21px 38px 22px 0;
  }
  :lang(ja) .guide-card:first-child{
    padding-top:0;
  }
  :lang(ja) .guide-card::after{
    top:31px;
    right:5px;
  }
  :lang(ja) .guide-card:first-child::after{
    top:9px;
  }
  :lang(ja) .guide-card h3{
    font-size:20px;
  }
  :lang(ja) .guide-editorial-note{
    grid-template-columns:1fr;
    gap:10px;
    margin-top:64px;
    padding:22px 0 0;
  }
}

@media(prefers-reduced-motion:reduce){
  :lang(ja) .guide-card::after,
  :lang(ja) .guide-card h3{
    transition:none;
  }
  :lang(ja) .guide-card:hover::after{
    transform:rotate(45deg);
  }
}