.chapter-shell{width:min(840px,calc(100% - 48px));margin:auto}.chapter-page .site-header .foundations-link{margin-left:auto}.chapter-intro{padding:38px 0 27px}.chapter-intro h1{font-size:56px;line-height:1.06}.chapter-intro h1 em{font-weight:400;color:#6b8055}.chapter-intro>p:not(.eyebrow){color:var(--muted);max-width:520px;margin:18px 0;font-size:16px}.chapter-scope{font-size:12px;border-left:3px solid #b78a52;padding:5px 12px;color:#655b44}.chapter-nav{display:flex;gap:6px;overflow-x:auto;margin:0 0 15px;padding:3px 2px 8px}.chapter-nav button{flex:1;display:flex;gap:9px;align-items:center;white-space:nowrap;border:1px solid transparent;background:none;min-height:48px;font-size:11px;border-radius:4px;padding:9px 10px;color:var(--muted)}.chapter-nav button span{font-size:13px;color:var(--ink)}.chapter-nav button[aria-current=step]{background:#e7edda;border-color:#c6d2b6}.chapter-panel{border:1px solid var(--line);border-radius:8px;background:var(--sheet);padding:30px;scroll-margin-top:12px;min-width:0}.chapter-panel:focus{outline:none}.chapter-panel h2{font:400 38px/1.15 var(--serif);letter-spacing:-1px;margin:12px 0 15px}.chapter-panel h3{font:400 27px/1.2 var(--serif);margin:12px 0 15px}.chapter-copy{color:var(--muted);font-size:15px;line-height:1.85;margin:0 0 20px}.step-tag{font-size:10px;letter-spacing:1px;color:var(--muted);display:flex;justify-content:space-between;gap:10px}.step-tag b{font-weight:500;letter-spacing:0}.primer-card{background:#f1f2e6;border:1px solid #d3dbc5;border-radius:5px;padding:20px;margin:18px 0}.primer-card h3{font-size:26px}.primer-card p{font-size:14px;line-height:1.85;color:var(--muted);margin:10px 0}.notation-line{display:flex;align-items:center;justify-content:center;gap:15px;font:600 28px/1.5 var(--serif);padding:12px 0}.notation-a{color:#a74836}.notation-b{color:#416584}.suit-controls{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}.suit-controls label{font-size:12px;display:grid;gap:6px}.suit-controls select{min-height:44px;border:1px solid #bdcbaa;background:var(--sheet);border-radius:4px;padding:8px;font:inherit;color:var(--ink);width:100%}.suit-controls select:focus-visible{outline:3px solid var(--coral)}.notation-preview{display:flex;gap:13px;justify-content:center;margin:20px 0}.notation-preview .tile-row{gap:2px}.notation-preview .tile-face{width:30px}.suit-result{font-size:13px!important;background:#e5ecd8;border-radius:4px;padding:10px}.suit-result.invalid{background:#f2e5d3}.mark-choices{display:flex;gap:8px}.mark-choices button{flex:1;min-height:46px;border:1px solid #bdcbaa;border-radius:4px;background:var(--sheet);font-size:14px}.mark-choices button[aria-pressed=true]{background:#dfe9cf;border-color:#3b6749}.marker-explanation{min-height:70px}.primer-actions,.scene-navigation{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:23px}.requirement-card{padding:18px;background:#f0f2e4;border:1px solid #d0d9c0;border-radius:5px}.requirement-label{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:10px;letter-spacing:.8px;color:var(--muted)}.hand-marker{font-size:12px;font-weight:600;letter-spacing:0;white-space:nowrap;color:#264c36}.requirement-tiles{display:flex;align-items:center;gap:16px;margin:18px 0 10px;flex-wrap:wrap}.requirement-tiles .tile-row{justify-content:flex-start;gap:4px;padding:0}.requirement-tiles .tile-face{width:33px}.requirement-tiles b{font-size:14px;font-weight:600}.requirement-card>p{font-size:13px;line-height:1.8;color:var(--muted);margin:10px 0 0}.discard-card{display:flex;align-items:center;gap:18px;margin:20px 0 18px;padding:18px;border-radius:5px;background:#204b3b;color:#fffbee}.discard-card>.tile-face{width:48px}.discard-card p{font-size:13px;margin:4px 0;color:#e1e8cf}.discard-card strong{font-weight:500;font-size:18px}.discard-card small{font-size:10px;letter-spacing:.8px;color:#d2dec5}.chapter-rack-heading{font-size:11px;letter-spacing:.7px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;margin:18px 0 13px}.chapter-rack{margin:0;max-width:none;gap:18px 7px}.chapter-rack .rack-tile{max-width:58px}.chapter-rack .worked-tile{outline:2px solid #e6c078;outline-offset:3px;transform:translateY(-3px)}.chapter-rack .rack-tile:disabled{cursor:default}.chapter-rack.partial-rack{display:flex;align-items:center;justify-content:center;gap:18px;min-height:105px}.partial-rack .rack-tile{width:46px}.other-tiles{border:1px dashed #bdceb0;border-radius:4px;padding:12px;text-align:center;color:#e3e9d7;max-width:220px;font-size:12px;line-height:1.6}.other-tiles b{display:block;font:400 24px var(--serif)}.action-question{font-size:14px;font-weight:600;margin:24px 0 12px}.chapter-options{display:grid;gap:8px}.chapter-choice{display:flex;align-items:center;justify-content:space-between;width:100%;text-align:left;background:#f9faf1;border:1px solid #c9d4ba;border-radius:5px;min-height:48px;padding:12px 14px;font-size:14px;line-height:1.5}.chapter-choice[aria-pressed=true],.chapter-choice.worked-answer{border-color:#386346;background:#e4edd7;box-shadow:inset 0 0 0 1px #386346}.chapter-choice:disabled{opacity:1;cursor:default}.chapter-choice small{font-size:11px;color:var(--muted);margin-left:12px;flex:none}.chapter-selection{font-size:13px;color:var(--muted);margin:14px 0;line-height:1.8;min-height:23px}.chapter-selection b{color:var(--ink)}.chapter-controls{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-top:15px;border-top:1px solid var(--line)}.chapter-hint{padding:13px 15px;font-size:14px;line-height:1.85;color:#5d5b3b;background:#f2ebd6;border-radius:4px;margin:15px 0}.chapter-feedback{border-top:1px solid var(--line);margin-top:24px;padding-top:22px;scroll-margin-top:12px}.chapter-feedback .feedback-tag{display:inline-block}.chapter-feedback p{font-size:14px;line-height:1.85;color:var(--muted)}.chapter-feedback .needs-practice{background:#f3e5cf;color:#79512c}.outcome-table{border:1px solid #cad6b8;border-radius:5px;background:#edf1df;padding:18px;margin-top:19px}.outcome-top{font-size:10px;letter-spacing:.8px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;margin-bottom:17px}.outcome-top b{letter-spacing:0;font-size:13px;color:var(--ink)}.exposure-area{background:#dde6cc;border-radius:4px;padding:13px;margin-bottom:15px}.exposure-area>span{font-size:11px;display:block;text-align:center;margin-bottom:12px}.exposure-area .tile-face{width:34px}.outcome-rack{grid-template-columns:repeat(7,minmax(0,1fr));gap:14px 6px;max-width:none}.outcome-rack .rack-tile{width:100%;max-width:46px}.outcome-rack .tile-face{width:100%}.outcome-rack .rack-tile:disabled{opacity:1}.outcome-selection{font-size:13px;min-height:24px;line-height:1.7;margin:13px 0}.outcome-table>.button{width:100%}.turn-ended{display:flex;gap:12px;align-items:center;background:#dfe8d0;border-radius:4px;padding:13px;font-size:14px;margin-top:17px}.turn-ended>span{font-size:24px}.premise-count{display:flex;align-items:center;justify-content:center;gap:20px;padding:14px;background:#e2ead4;border-radius:5px;font-size:13px}.premise-count>span{max-width:155px}.premise-count b{display:block;font:400 26px var(--serif);margin-bottom:5px}.score-line{display:flex;gap:20px;align-items:center;background:#e6edd8;padding:20px;border-radius:5px;margin:20px 0}.score-line strong{font:400 42px var(--serif);white-space:nowrap}.score-line p{font-size:13px;line-height:1.8;margin:0;color:var(--muted)}.rule-recap{display:grid;gap:8px}.rule-recap>div{padding:12px;border:1px solid #d4ddc6;border-radius:4px;font-size:13px;display:flex;justify-content:space-between;gap:10px}.check-sets{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}.check-sets .button{width:100%}.check-sets small{display:block;font-size:12px;color:var(--muted);line-height:1.7;margin-top:8px}.scope-reminder{font-size:12px;line-height:1.8;color:var(--muted);margin-top:19px}.chapter-panel .text-button{font-size:13px}.chapter-panel button:focus-visible{outline-offset:3px}.chapter-panel h2:focus,.chapter-panel h3:focus{outline:none}
@media(max-width:600px){.chapter-shell{width:calc(100% - 32px)}.chapter-intro{padding:22px 0 21px}.chapter-intro h1{font-size:39px;letter-spacing:-1.4px}.chapter-intro>p:not(.eyebrow){font-size:14px;line-height:1.8;margin:13px 0}.chapter-scope{font-size:11px;line-height:1.7}.chapter-nav button{flex:none;min-height:44px;padding:8px;font-size:10px;gap:7px}.chapter-nav button span{font-size:12px}.chapter-panel{padding:20px 16px}.chapter-panel h2{font-size:30px}.chapter-panel h3{font-size:25px}.chapter-copy{font-size:14px;line-height:1.8}.primer-card{padding:15px}.primer-card h3{font-size:23px}.primer-card p{font-size:13px}.notation-line{font-size:24px;gap:10px}.notation-preview{gap:9px}.notation-preview .tile-face{width:26px}.requirement-card{padding:14px}.requirement-label{font-size:9px;letter-spacing:.5px}.requirement-tiles{gap:12px;margin-top:16px}.requirement-tiles .tile-face{width:30px}.requirement-tiles b{font-size:13px}.requirement-card>p{font-size:12px}.discard-card{padding:14px;gap:15px}.discard-card p{font-size:12px}.discard-card strong{font-size:16px}.discard-card>.tile-face{width:44px}.chapter-rack{gap:17px 5px;padding:18px 9px 23px}.chapter-choice{font-size:13px;padding:11px 12px}.chapter-choice small{font-size:10px}.chapter-rack-heading{font-size:10px}.outcome-table{padding:13px}.outcome-rack{padding:15px 8px 20px;gap:14px 4px}.outcome-rack .tile-index{font-size:9px;left:2px;top:2px}.chapter-feedback p{font-size:13px}.chapter-selection,.outcome-selection{font-size:12px}.check-sets{gap:9px}.score-line{padding:15px;gap:15px}.score-line strong{font-size:34px}.chapter-page .site-header .brand{font-size:30px}.chapter-page .foundations-link{font-size:12px}.step-tag{font-size:9px;line-height:1.7}.partial-rack .other-tiles{max-width:170px;font-size:11px}.chapter-rack.partial-rack{gap:12px}.premise-count{gap:13px;font-size:12px}.premise-count .tile-face{width:30px}.scene-navigation .button{font-size:12px}.scene-navigation .text-button{font-size:12px}}
@media(max-width:360px){.chapter-panel{padding-inline:13px}.primer-card{padding:12px}.suit-controls{gap:8px}.suit-controls label{font-size:11px}.notation-preview .tile-face{width:24px}.notation-preview{gap:6px}.notation-preview .tile-row{gap:1px}.chapter-controls{gap:8px}.chapter-controls .text-button{font-size:12px}.chapter-controls .button{font-size:12px;padding-inline:12px}.chapter-choice small{display:none}.outcome-rack{gap:14px 3px;padding-inline:7px}.outcome-rack .rack-tile{min-height:44px}.chapter-page .site-footer>div{max-width:170px}.check-sets{grid-template-columns:1fr}.requirement-label{align-items:flex-start}.hand-marker{font-size:11px}.chapter-rack.partial-rack{padding-inline:10px}}
/* Independent reading decisions and resilient text wrapping. */
.stage-rewind{display:block;margin:7px 0 0;text-align:left;color:var(--muted);font-size:12px!important}.reading-card{padding:18px;border:1px solid #d0d9c0;border-radius:5px;background:#f0f2e4}.notation-rust{color:#a74836}.notation-blue{color:#416584}.reading-note{font-size:14px;line-height:1.8;margin:12px 0}.reading-marker{text-align:center;font:600 48px/1.5 var(--serif);color:var(--ink);padding:10px}.reading-options{display:grid;gap:12px}.reading-choice{display:grid;gap:10px;text-align:left;min-height:48px;width:100%;min-width:0;padding:15px;border:1px solid #c9d4ba;border-radius:5px;background:#f9faf1;color:var(--ink);font-size:14px;line-height:1.75}.reading-choice>b{font-size:12px;color:var(--muted)}.reading-choice[aria-pressed=true]{border-color:#386346;background:#e4edd7;box-shadow:inset 0 0 0 1px #386346}.reading-choice:disabled{opacity:1;cursor:default}.reading-arrangement{display:flex;flex-wrap:wrap;align-items:center;gap:14px}.reading-arrangement .tile-row{gap:3px;padding:0}.reading-arrangement .tile-face{width:32px;flex:none}.reading-tile-names{font-size:12px;line-height:1.8;color:var(--muted);overflow-wrap:anywhere}.reading-correction{display:grid;gap:12px;background:#edf1df;border:1px solid #cad6b8;border-radius:5px;padding:15px;font-size:13px}.correction-label{border-left:3px solid #b78a52;padding:7px 12px;background:#f7eedc}.chapter-page .site-header{height:auto;min-height:68px;flex-wrap:wrap;padding-block:12px}.chapter-page .foundations-link{max-width:100%;white-space:normal}.chapter-page .chapter-panel *{min-width:0}.chapter-page .requirement-label,.chapter-page .outcome-top,.chapter-page .chapter-rack-heading{flex-wrap:wrap}.chapter-page .requirement-label>span:first-child{flex:1 1 120px}.chapter-page .hand-marker{white-space:normal;max-width:100%;overflow-wrap:anywhere;flex:0 1 auto}.chapter-page .chapter-choice{flex-wrap:wrap;gap:5px}.chapter-page .chapter-choice small{margin-left:0;flex:0 1 auto}.chapter-page .chapter-controls{flex-wrap:wrap}.chapter-page .chapter-controls>.button{margin-left:auto;max-width:100%;white-space:normal}.chapter-page .scene-navigation>*{max-width:100%;white-space:normal}.chapter-page .step-tag{flex-wrap:wrap}.chapter-page .score-line{flex-wrap:wrap}.chapter-page .check-sets{grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}.chapter-page .rule-recap>div{flex-wrap:wrap}.chapter-page .premise-count{flex-wrap:wrap}.chapter-page .chapter-panel p,.chapter-page .chapter-panel button{overflow-wrap:break-word}.chapter-page .site-footer{flex-wrap:wrap}.chapter-page .site-footer>div{min-width:0;max-width:100%}.chapter-page .site-footer a,.chapter-page .site-footer button{overflow-wrap:anywhere}
@media(max-width:600px){.reading-card{padding:14px}.reading-choice{padding:12px;font-size:13px}.reading-arrangement{gap:10px}.reading-arrangement .tile-row{gap:2px}.reading-arrangement .tile-face{width:28px}.reading-tile-names{font-size:11px}.reading-note{font-size:13px}.stage-rewind{font-size:11px!important}.chapter-page .chapter-controls .small-note{flex:1 1 120px}.chapter-page .chapter-options .chapter-choice small{margin-left:0}.chapter-page .site-footer>div{max-width:100%;text-align:left;justify-items:start;margin-left:0}.chapter-page .site-footer .text-button{justify-self:start}}
@media(max-width:360px){.reading-choice{padding:10px}.reading-arrangement{gap:7px}.reading-arrangement .tile-face{width:25px}.reading-arrangement .tile-row{gap:1px}.reading-tile-names{font-size:11px}.reading-card{padding:12px}.chapter-page .chapter-controls .small-note{flex-basis:100%}}
.chapter-page h1,.chapter-page h2,.chapter-page h3{overflow-wrap:anywhere}

/* Color identity is available without relying on hue. */
.labeled-notation{align-items:flex-start;flex-wrap:wrap;gap:16px}.notation-part{display:grid;justify-items:center;gap:5px;min-width:0;max-width:100%}.notation-print-label{font:500 12px/1.5 var(--sans);letter-spacing:0;color:var(--ink);white-space:normal;overflow-wrap:anywhere}.notation-symbols{max-width:100%;overflow-wrap:anywhere}
@media(max-width:600px){.labeled-notation{gap:12px}.notation-print-label{font-size:11px}}