/* Rich article reader. Uses site tokens from site.css (:root). No external assets. */
.ra-progress{position:sticky;top:0;z-index:20;height:3px;background:#efeae0}
.ra-progress span{display:block;height:3px;width:0;background:var(--accent,#a63a2b);transition:width .1s linear}
.ra-layout{display:grid;grid-template-columns:200px minmax(0,760px) 280px;gap:40px;padding-top:36px;padding-bottom:72px;max-width:1400px;justify-content:center}
.ra-outline{align-self:start;position:sticky;top:24px;font-size:13px;line-height:1.6}
.ra-card-link[hidden]{display:none}
.ra-back{display:block;color:var(--muted);margin-bottom:22px}
.ra-outline-title{font-size:11px;letter-spacing:.12em;color:var(--accent,#a63a2b);font-weight:700;margin:18px 0 8px}
.ra-toc summary{cursor:pointer;font-weight:700;color:var(--ink);padding:8px 0}
.ra-toc summary:focus-visible{outline:3px solid var(--primary);outline-offset:3px}
.ra-outline ol{list-style:none;margin:0;padding:0;border-left:2px solid var(--line)}
.ra-outline li a{display:block;padding:6px 12px;margin-left:-2px;border-left:2px solid transparent;color:#3a404c}
.ra-outline li a[aria-current]{border-left-color:var(--accent,#a63a2b);color:var(--ink);font-weight:700}
.ra-units li a{font-size:12px}
.ra-article{min-width:0}
.ra-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.ra-pill{font-size:12px;padding:2px 9px;border-radius:3px;background:#f2f2f2;color:#4a4a4a}
.ra-pill-ok{background:#e2f0e8;color:var(--ok,#1f6b4a)}
.ra-pill-sample{background:#f1e4d2;color:#7a4b00}
.ra-article h1{font-family:"Songti SC","STSong","Noto Serif SC",serif;font-size:38px;line-height:1.35;margin-bottom:14px}
.ra-lead{font-size:18px;line-height:1.85;color:#3a404c}
.ra-modes{display:flex;gap:8px;margin:22px 0 30px;flex-wrap:wrap}
.ra-modes button{flex:1 1 150px;min-height:56px;text-align:left;padding:8px 14px;border:1px solid var(--line);border-radius:8px;background:#fffdf9;color:var(--ink);cursor:pointer;font-weight:700}
.ra-modes button small{display:block;font-weight:400;font-size:12px;color:var(--muted)}
.ra-modes button[aria-pressed=true]{border:2px solid var(--primary);padding:7px 13px;background:var(--purple-light,#e4e9f1)}
.ra-body{display:flex;flex-direction:column;gap:22px;min-width:0}
.ra-block,.ra-table-scroll{min-width:0;max-width:100%}
.ra-body p.ra-prose{font-size:16px;line-height:2;color:#2e3440}
.ra-body h2.ra-heading{font-family:"Songti SC","STSong","Noto Serif SC",serif;font-size:26px;margin-top:22px;scroll-margin-top:20px}
.ra-body h3{font-size:18px}
.ra-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.ra-body table{width:100%;border-collapse:collapse;font-size:14px}
.ra-body th,.ra-body td{border:1px solid var(--line);padding:10px;text-align:left;vertical-align:top}
.ra-term{display:inline;border:0;border-bottom:2px dotted var(--primary);background:transparent;color:var(--primary);font:inherit;padding:0 2px;cursor:pointer;line-height:inherit}
.ra-term[aria-expanded=true]{background:var(--purple-light,#e4e9f1)}
.ra-fn{border:0;background:transparent;color:var(--accent,#a63a2b);font-size:12px;font-weight:700;cursor:pointer;padding:0 2px;min-width:24px;min-height:24px}
.ra-fn-inline{font-size:13px;margin-top:10px;color:#f2b8ae}
/* blocks */
.ra-block{margin:6px 0;background:#fffdf9;border:1px solid var(--line);border-radius:12px;padding:22px 24px}
.ra-block-title{font-family:"Songti SC","STSong","Noto Serif SC",serif;font-size:20px;font-weight:700;margin-bottom:14px;color:var(--ink)}
.ra-caption,.ra-hint{font-size:13px;color:var(--muted);margin-top:10px}
.ra-locked{display:flex;gap:12px;align-items:center;color:var(--muted);font-size:14px}
.ra-locked span{color:var(--primary);font-size:22px}
.ra-flow-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:22px;counter-reset:none}
.ra-flow-step{position:relative}
.ra-flow-step:not(:last-child)::after{content:"›";position:absolute;right:-17px;top:50%;transform:translateY(-50%);color:#8c93a0;font-size:20px}
.ra-flow-step>a,.ra-flow-step>div{display:block;height:100%;background:var(--purple-light,#e4e9f1);border-radius:10px;padding:14px 12px;color:var(--ink);text-decoration:none!important}
.ra-flow-step>a:hover{outline:2px solid var(--primary)}
.ra-flow-final>a,.ra-flow-final>div{background:var(--primary);color:#fff}
.ra-flow-label{display:block;font-size:12px;letter-spacing:.06em;opacity:.8}
.ra-flow-step b{display:block;font-size:15px;line-height:1.5;margin-top:4px}
.ra-flow-step small{display:block;font-size:12px;opacity:.85;margin-top:4px}
.ra-notes{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-top:14px}
.ra-note{font-size:13px;line-height:1.65;color:#3a404c;border-top:2px dashed var(--warn,#a04b00);padding-top:8px}
.ra-note b{display:block;color:var(--ink)}
.ra-note.ra-tone-ok{border-top-style:solid;border-color:var(--ok,#1f6b4a)}
.ra-note.ra-tone-info{border-top-style:solid;border-color:var(--primary)}
.ra-table-scroll{overflow-x:auto;position:relative}
.ra-table-scroll{overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch}
.ra-table-scroll:focus-visible{outline:3px solid var(--primary);outline-offset:3px}
.ra-table-scroll>table{min-width:560px}
.ra-matrix table{min-width:560px;width:100%;border-collapse:collapse;font-size:14px}
.ra-matrix thead th{font-size:12px;color:var(--muted);text-align:center;padding:8px;border-bottom:1px solid var(--line)}
.ra-matrix thead th:first-child{text-align:left}
.ra-matrix tbody th,.ra-matrix tbody td{border-bottom:1px solid #efeae0;padding:0}
.ra-matrix td{text-align:center;padding:10px 6px}
.ra-row{width:100%;min-height:46px;text-align:left;border:0;background:transparent;padding:8px 10px;cursor:pointer;color:var(--ink);font-weight:500}
.ra-matrix tr.is-selected{background:var(--purple-light,#e4e9f1)}
.ra-matrix tr.is-selected .ra-row{font-weight:700}
.ra-mark-yes{color:var(--primary);font-weight:700}.ra-mark-no{color:#b8bec7}.ra-mark-partial{color:var(--warn,#a04b00)}
.ra-matrix-detail{margin-top:14px;background:var(--purple-light,#e4e9f1);border-radius:8px;padding:12px 14px;font-size:14px;line-height:1.75;color:var(--ink)}
.ra-timeline-list{list-style:none;margin:0;padding:24px 0 0;display:grid;grid-auto-flow:column;grid-auto-columns:minmax(150px,1fr);gap:16px;position:relative;overflow-x:auto}
.ra-timeline-list::before{content:"";position:absolute;left:0;right:0;top:9px;height:4px;background:var(--line);border-radius:2px}
.ra-timeline-list li{position:relative;padding-top:18px;font-size:13px;line-height:1.6;min-width:0}
.ra-timeline-list li::before{content:"";position:absolute;top:-24px;left:0;width:22px;height:22px;border-radius:50%;background:var(--primary);border:3px solid #fffdf9}
.ra-timeline-list li.ra-tone-warn::before,.ra-timeline-list li.ra-tone-trap::before{background:var(--accent,#a63a2b)}
.ra-timeline-list time{display:block;font-weight:700;font-variant-numeric:tabular-nums}
.ra-timeline-list b{display:block;color:var(--ink)}
.ra-timeline-list p{font-size:13px;color:#3a404c}
.ra-timeline-notes{margin:16px 0 0;padding:12px 0 0 18px;border-top:1px solid #efeae0;font-size:13px;color:#3a404c}
.ra-compare-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px}
.ra-compare-card{border:1px solid var(--line);border-radius:10px;padding:16px;background:#fff;display:flex;flex-direction:column;gap:6px}
.ra-compare-eyebrow,.ra-compare-label{font-size:12px;color:var(--muted)}
.ra-compare-title{font-family:"Songti SC","STSong","Noto Serif SC",serif;font-size:19px}
.ra-compare-card p{font-size:14px;color:#2e3440}
.ra-pitfall{background:#fff1d6;border-radius:6px;padding:8px 10px;font-size:13px!important;color:#5a3a00!important}
.ra-pitfall b{display:block;color:#7a4b00}
.ra-scenario-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
.ra-block.ra-scenarios{background:var(--ink);border-color:var(--ink)}
.ra-block.ra-scenarios .ra-block-title{color:#fff}
.ra-scenario-list li{border:1px solid #3b4352;border-radius:10px;padding:14px;color:#fff}
.ra-scenario-list li b{display:block;margin:6px 0 2px}
.ra-scenario-list li p{font-size:13px;color:#c8cdd6}
.ra-scenario-no{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;background:#f2b8ae;color:var(--ink);font-weight:700;font-size:13px}
.ra-block.ra-case{border:2px solid var(--accent,#a63a2b)}
.ra-synthetic{display:inline-block;font-size:12px;background:#f1e4d2;color:#7a4b00;padding:2px 8px;border-radius:3px;margin-bottom:10px}
.ra-case-fact{font-size:16px;line-height:1.85;color:#2e3440}
.ra-case-question{margin:12px 0;font-size:16px;color:var(--ink)}
.ra-options{display:flex;flex-wrap:wrap;gap:10px}
.ra-option{min-height:46px;padding:0 18px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);cursor:pointer;font-size:15px}
.ra-option[data-state=right]{border:2px solid var(--ok,#1f6b4a);background:#e2f0e8;color:var(--ok,#1f6b4a);font-weight:700}
.ra-option[data-state=wrong]{border:2px solid #b42318;background:#fbe4e1;color:#b42318}
.ra-case-result{margin-top:14px;background:#f4f5f7;border-radius:8px;padding:12px 14px;font-size:15px;line-height:1.8}
.ra-case-result p{color:#2e3440}
.ra-case-feedback{font-weight:700;color:var(--ink)!important}
.ra-check-count{font-size:13px;color:var(--muted)}
.ra-check-list{list-style:none;margin:8px 0 0;padding:0}
.ra-check-list li{border-top:1px solid #efeae0}
.ra-check-list label{display:flex;gap:12px;align-items:flex-start;padding:12px 0;cursor:pointer}
.ra-check-list input{width:18px;height:18px;margin-top:5px;accent-color:var(--primary);flex:0 0 18px}
.ra-check-list b{display:block;color:var(--ink)}
.ra-check-list small{display:block;font-size:14px;color:#3a404c;line-height:1.7}
.ra-block.ra-callout{padding:16px 20px}
.ra-callout-text{font-size:15px;line-height:1.8;color:#2e3440}
.ra-block.ra-callout:has(.ra-tone-trap){background:#fff1d6;border-color:#e8cf9f}
.ra-block.ra-callout:has(.ra-tone-tip){background:var(--purple-light,#e4e9f1);border-color:#c9d3e4}
.ra-block.ra-quote{background:transparent;border:0;border-left:4px solid var(--accent,#a63a2b);border-radius:0;padding:4px 0 4px 22px}
.ra-block.ra-quote .ra-block-title{display:none}
.ra-quote-text{margin:0;font-family:"Songti SC","STSong","Noto Serif SC",serif;font-size:22px;line-height:1.7;color:var(--ink)}
.ra-teaser{border:1px dashed var(--line);border-radius:12px;padding:18px 22px;font-size:14px}
.ra-teaser ul{margin:8px 0 0;padding-left:18px;color:#3a404c}
.ra-complete{margin-top:28px}
.ra-workpaper{margin-top:28px;padding:20px;border:1px solid var(--line);border-radius:12px;background:#fffdf9}
.ra-workpaper h2{font-size:20px;margin-bottom:8px}
.ra-workpaper label{display:block;margin:16px 0 8px;font-weight:700}
.ra-workpaper textarea{display:block;width:100%;max-width:100%;resize:vertical;min-height:110px;border:1px solid var(--line);border-radius:6px;padding:12px;font:inherit}
.ra-workpaper textarea:focus-visible{outline:3px solid var(--primary);outline-offset:2px}
.ra-workpaper-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.ra-sources{border-top:1px solid var(--line);margin-top:40px;padding-top:22px;font-size:13px;line-height:1.8}
.ra-sources h2{font-size:18px;margin-bottom:10px}
.ra-sources ol{padding-left:20px;margin:0 0 10px}
.ra-sources li:target{background:#fff1d6}
.ra-sources a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
/* rail */
.ra-rail{align-self:start;position:sticky;top:24px;display:flex;flex-direction:column;gap:14px}
.ra-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;position:relative}
.ra-card:focus{outline:3px solid var(--primary);outline-offset:2px}
.ra-card-close{display:none;position:absolute;right:8px;top:8px;width:40px;height:40px;border:0;background:transparent;font-size:22px;cursor:pointer;color:var(--muted)}
.ra-card-kind{font-size:12px;color:var(--primary);font-weight:700}
.ra-card h2{font-family:"Songti SC","STSong","Noto Serif SC",serif;font-size:19px;margin:4px 0 6px}
.ra-card p{font-size:14px;line-height:1.75;color:#2e3440}
.ra-card-meta{font-size:12px!important;color:var(--muted)!important;margin-top:8px}
.ra-card-link{display:inline-block;margin-top:8px;font-size:13px;color:var(--primary);text-decoration:underline}
.ra-rail-note{background:#fff1d6;border-radius:12px;padding:16px 18px;font-size:13px;line-height:1.7}
.ra-rail-note p{color:#3a404c}
/* reading modes */
.ra-layout[data-mode=quick] .ra-prose,.ra-layout[data-mode=practice] .ra-prose{display:none}
.ra-layout [data-ra-hidden]{display:none!important}
@media (max-width:1180px){.ra-layout{grid-template-columns:minmax(0,1fr) 260px;grid-template-areas:"outline outline" "article rail";gap:28px}.ra-outline{display:block;position:static;grid-area:outline}.ra-article{grid-area:article}.ra-rail{grid-area:rail}.ra-toc{border:1px solid var(--line);border-radius:8px;padding:6px 12px}}
@media (max-width:900px){
.ra-layout{grid-template-columns:minmax(0,1fr);grid-template-areas:"outline" "article" "rail";padding-top:20px}
.ra-article h1{font-size:28px}.ra-lead{font-size:16px}
.ra-block{padding:18px 16px}
.ra-flow-steps{grid-template-columns:1fr;gap:14px}
.ra-flow-step:not(:last-child)::after{content:"⌄";right:auto;left:50%;top:auto;bottom:-16px;transform:translateX(-50%)}
.ra-rail{position:static}
.ra-rail-note{display:none}
.ra-card{position:fixed;left:0;right:0;bottom:0;z-index:50;border-radius:16px 16px 0 0;padding:22px 18px 28px;box-shadow:0 -8px 24px rgba(30,36,48,.18);transform:translateY(110%);transition:transform .2s ease;max-height:60vh;overflow:auto}
.ra-card.is-open{transform:none}
.ra-card-close{display:block}
.ra-modes button{flex:1 1 30%;min-height:52px;padding:6px 10px}
.ra-modes button small{display:none}
}
@media (prefers-reduced-motion:reduce){.ra-card,.ra-progress span{transition:none}}
@media (max-width:600px){
.ra-timeline-list{grid-auto-flow:row;grid-template-columns:minmax(0,1fr);grid-auto-columns:auto;padding:0 0 0 26px;overflow:visible}
.ra-timeline-list::before{left:9px;right:auto;top:0;bottom:0;width:4px;height:auto}
.ra-timeline-list li{padding-top:0}
.ra-timeline-list li::before{left:-26px;top:0}
}
@media print{.ra-progress,.ra-outline,.ra-rail,.ra-modes{display:none}.ra-layout{display:block}.ra-layout[data-mode] .ra-prose{display:block!important}.ra-block{break-inside:avoid}}
.ra-matrix tbody th,.ra-matrix tbody td{vertical-align:middle}
.ra-matrix td,.ra-matrix th{border-left:0;border-right:0;border-top:0}