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@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.flow-dot,.return-dot{display:none}}
.mobile-flow{display:none}.diagram-frame{width:100%}.mobile-flow text{font-family:var(--sans);fill:var(--ink)}.mobile-flow .label{font-size:16px;font-weight:700}.mobile-flow .detail{font-size:12px;fill:#62716a}.mobile-flow .money-line{stroke:var(--orange);fill:none;stroke-width:2}.mobile-flow .return-line{stroke:#77a797;fill:none;stroke-width:2}
@media(max-width:580px){.mobile-flow{display:block;width:100%;height:auto}.money-scene>.diagram-frame{display:none}.diagram-frame{overflow-x:auto;overscroll-behavior-x:contain;padding-bottom:10px}.diagram-frame .diagram{min-width:540px}.diagram-frame:after{content:'← 左右に動かして図を見る →';display:block;font-size:10px;color:var(--ink-2);margin-top:8px}.dark .diagram-frame:after{color:#b5cbc0}.swap-equation{font-size:14px}}
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/* Long-form chapter navigation should reach its destination immediately. */
html{scroll-behavior:auto}
.money-scene>.diagram-frame:after{display:none}
/* Keep multi-column learning tables readable within their own scroll area. */
.tbl{max-width:100%;overscroll-behavior-x:contain}
@media(max-width:600px){.prose .tbl table{min-width:620px}.tbl:focus-visible{outline:2px solid var(--orange);outline-offset:3px}}

.hero-phrase{white-space:nowrap}
@media(max-width:580px){.hero-phrase{display:block}.hero-phrase+br{display:none}}

/* Comfortable reading sizes for the long-form textbook and its diagrams. */
.prose p,.prose li{font-size:19px;line-height:1.95}
.prose h2{font-size:30px;line-height:1.55}
.prose h3{font-size:23px;line-height:1.6}
.prose h4{font-size:20px}
.prose table{font-size:17px;line-height:1.8}
.prose td,.prose th{padding:16px}
.nav-part>ul a{font-size:15px;line-height:1.65;padding-top:7px;padding-bottom:7px}
.nav-part-link,.brand{font-size:17px}
.hero-deck p{font-size:18px}.pill-link{font-size:16px}
.chapter-route b{font-size:17px}.chapter-route small,.part-meta,.hero-note,.foot p{font-size:15px;line-height:1.85}
.hero-art figcaption{font-size:12px;letter-spacing:.04em;gap:12px;flex-wrap:wrap}
.plate .intro,.plate .caption{font-size:16px;line-height:1.9;max-width:none}
.phase-note{font-size:17px!important;line-height:1.85!important}
.segmented{flex-wrap:wrap;border-radius:24px}.segmented button{font-size:16px;padding:11px 16px}
.plate-kicker,.plate-no{font-size:12px}.plate-top{flex-wrap:wrap}
.capital-key b,.mini-series b,.gallery-grid .plate:not(.wide) .mini-series b,.process-line b{font-size:17px}
.capital-key small,.capital-layer span,.mini-series p,.process-line small{font-size:15px;line-height:1.85}
.lab-controls label,.metric-label,.chart-note span{font-size:16px}
.result-state{font-size:16px!important;line-height:1.85!important}
.under-gauge,.chart-key{font-size:14px;gap:12px;flex-wrap:wrap}
.gallery-intro p{font-size:17px}
.diagram-frame{overflow-x:auto;overscroll-behavior-x:contain;padding-bottom:12px}
.diagram-frame .diagram{min-width:720px}
.diagram .label{font-size:18px}.diagram .detail{font-size:15px}.diagram .en{font-size:12px}
.mobile-flow .label{font-size:19px}.mobile-flow .detail{font-size:16px}
@media(max-width:900px){.side details summary{font-size:16px;padding:9px 18px}}
@media(max-width:600px){
 .prose p,.prose li{font-size:18px;line-height:1.95}
 .prose h2{font-size:26px}.prose h3{font-size:22px}
 .prose .tbl table{min-width:720px;font-size:17px}
 .prose blockquote{padding:18px}.bridge{padding:20px}
 .hero-deck p{font-size:17px}.hero-note{font-size:15px}
 .plate{padding:24px 16px}.plate figcaption{font-size:27px}
 .plate .intro,.plate .caption{font-size:16px}
 .segmented{display:flex}.segmented button{flex:1;padding:10px 8px;font-size:15px;white-space:nowrap}
 .capital-key{grid-template-columns:1fr}.capital-key div{padding:12px 0}
 .mini-series>div{display:block}.mini-series svg{height:100px;max-width:220px;margin:12px 0}
 .mini-series .tiny-icon{margin-bottom:10px}
 .diagram-frame:after{font-size:14px}
 .chart-note{flex-wrap:wrap}.swap-equation{font-size:17px}
}