:root{--paper:#eeeeee;--ink:#292929;--muted:#5c5c5c;--line:#c7c7c7;--white:#f8f8f8;--accent:#515151;--orange:#7b7b7b;--olive:#363636;--screen:#282828;--green:#e3e3e3;--danger:#515151;--pad:clamp(24px,5.2vw,78px);--sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--mono:"SFMono-Regular",Consolas,monospace;--ease:cubic-bezier(.22,.75,.22,1);--title:34px;--body:18px;--secondary:16px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-snap-type:y proximity}body{margin:0;background:var(--paper);color:var(--ink);font:var(--body)/1.8 var(--sans);-webkit-font-smoothing:antialiased}h1,h2,h3,p,dl,dd{margin:0}h1,h2,h3{font-weight:600;line-height:1.4;letter-spacing:-.035em}button,input{font:inherit}button{cursor:pointer;border:0;background:none;color:inherit;transition:background .16s,box-shadow .16s,transform .16s,color .16s}button:disabled{cursor:not-allowed;opacity:.4}button:active:not(:disabled){transform:translateY(2px)}a{color:inherit;text-decoration:none}button svg,a svg{width:23px;height:23px;vertical-align:middle;fill:none;stroke:currentColor;stroke-width:1.6}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:4px}::selection{background:#7b7b7b33}input{accent-color:var(--accent)}[x-cloak]{display:none!important}.skip{position:fixed;top:-100px;left:20px;z-index:99;background:var(--white);padding:12px}.skip:focus{top:8px}
.site-header{position:fixed;inset:0 0 auto;z-index:20;min-height:76px;padding:0 var(--pad);display:flex;align-items:center;justify-content:space-between;gap:24px;background:#eeeeeef5;border-bottom:1px solid var(--line);font-size:14px}.brand{display:flex;align-items:baseline;gap:4px;font-weight:700;font-size:21px;letter-spacing:-.06em;white-space:nowrap}.brand-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--orange);margin-left:3px}.site-header nav{display:flex;gap:7px}.site-header nav button{font-size:14px;padding:9px 17px;border:1px solid transparent;white-space:nowrap}.site-header nav button:before{content:"";display:inline-block;width:5px;height:5px;border-radius:50%;background:#939393;margin-right:9px;vertical-align:2px}.site-header nav button:hover{background:#e0e0e0}.site-header nav button[aria-current=true]{border-color:#aeaeae;background:#e3e3e3;box-shadow:none}.site-header nav button[aria-current=true]:before{background:var(--orange);box-shadow:none}.header-tools{display:flex;align-items:center;gap:24px}.header-tools button{min-height:44px}.header-tools button span{font-size:22px;margin-left:7px}#fullscreen{font-size:25px}.page{min-height:100svh;scroll-snap-align:start;padding:112px var(--pad) 92px;display:flex;align-items:center;position:relative}.page-inner{width:100%;max-width:1180px;margin:auto;display:flex;flex-direction:column;gap:31px;min-width:0}.page-heading{max-width:100%}.heading-meta{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:24px;min-height:20px}.outline-chapter,.part-count{font-size:13px;line-height:1.6;color:var(--muted)}.part-count{font-family:var(--mono);white-space:nowrap}.page-heading h2{font-size:var(--title);line-height:1.45;max-width:1140px;text-wrap:balance}.page-control{position:fixed;bottom:0;left:0;right:0;z-index:20;min-height:66px;display:flex;align-items:center;gap:28px;padding:8px var(--pad);background:#e3e3e3f7;border-top:1px solid #bbbbbb;box-shadow:none;font-size:13px}.page-control>span:first-child{min-width:80px}.page-track{width:180px;height:4px;border-radius:4px;background:#c8c8c8;box-shadow:none;overflow:hidden}.page-track i{height:100%;display:block;background:var(--accent);transition:width .3s var(--ease)}.keyboard-hint{margin-left:auto;color:var(--muted)}.pager{display:flex;align-items:center;gap:12px}.pager button{background:#424242;color:#f8f8f8;border:1px solid #353535;border-radius:4px;width:40px;height:36px;font-size:21px;box-shadow:none}.pager button:hover:not(:disabled){background:#575757}.pager button:active:not(:disabled){box-shadow:none}.pager button:disabled{opacity:.35;box-shadow:none}.pager>span{font:13px/1 var(--mono);padding:12px 13px;background:#d4d4d4;border:1px solid #b5b5b5;box-shadow:none;color:#373737;min-width:92px;text-align:center}
/* The cover's interactive object is the visual centre. */
.cover .page-inner{max-width:1280px;gap:36px}.cover-heading{text-align:center}.hero-context{display:flex;justify-content:center;gap:10px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:18px}.hero-context i{width:6px;height:6px;border-radius:50%;background:var(--orange)}.hero-context>span{margin-left:10px;padding-left:18px;border-left:1px solid var(--line)}.cover h1{font-size:clamp(34px,3.4vw,48px);line-height:1.35;letter-spacing:-.045em}.cover-stage{display:grid;grid-template-columns:190px minmax(420px,610px) 190px;gap:44px;justify-content:center;align-items:center}.cover-aside{font-size:16px;line-height:1.9}.cover-aside-title{font-size:18px;font-weight:600;margin-bottom:16px}.cover-aside .caption{display:block;margin-top:16px}.caption{font-size:13px;line-height:1.7;color:var(--muted);margin-top:14px}.start,.solid{display:inline-flex;align-items:center;justify-content:space-between;gap:28px;min-height:46px;padding:10px 21px;background:var(--orange);color:#121212;font-size:15px;border:1px solid #696969;box-shadow:none;border-radius:3px}.start{margin-top:26px}.start:hover,.solid:hover{background:#919191}.start:active,.solid:active{box-shadow:none}.cover-note ol{list-style:none;padding:0;margin:0;font-size:14px;color:var(--muted)}.cover-note li{margin-bottom:8px}.cover-total{border-top:1px solid var(--line);padding-top:20px;margin-top:24px;font-size:13px;color:var(--muted)}.cover-total b{font:34px var(--mono);color:var(--ink);margin-right:5px}.cover-total span{display:block;margin-top:8px}.observer-device{position:relative;padding:29px 32px 20px;background:var(--white);border:1px solid #9f9f9f;border-radius:13px;box-shadow:none;transform:rotate(-1.5deg);isolation:isolate}.observer-device:after{content:"";position:absolute;inset:2px;z-index:-1;border:1px solid #f6f6f64d;border-radius:11px;pointer-events:none}.screw{position:absolute;width:8px;height:8px;background:var(--white);border:1px solid #868686;border-radius:50%;box-shadow:none}.screw:after{content:"";position:absolute;left:1px;right:1px;top:3px;height:1px;background:#676767;transform:rotate(-35deg)}.tl{left:12px;top:12px}.tr{right:12px;top:12px}.bl{left:12px;bottom:12px}.br{right:12px;bottom:12px}.device-top{display:flex;align-items:center;gap:16px;margin-bottom:22px}.device-top b{font-size:20px;letter-spacing:-.06em}.device-top>span{font-size:12px;color:#4b4b4b;margin-left:auto}.device-vents{width:57px;height:18px;background:var(--white);opacity:.7}.device-display{background:var(--screen);color:#e5e5e5;border:6px solid #8f8f8f;border-radius:5px;box-shadow:none;min-height:235px;padding:17px 23px;position:relative}.device-display:after{content:"";position:absolute;inset:0;background:var(--white);pointer-events:none}.display-top{display:flex;align-items:center;gap:8px;font:12px/1.5 var(--mono);color:#c1c1c1}.display-led{width:5px;height:5px;background:#939393;border-radius:50%;box-shadow:none}.display-case{margin-left:auto}.device-display #perspective-question{font-size:25px;line-height:1.5;letter-spacing:-.03em;margin:20px 0 16px;font-weight:550}.display-status{display:flex;gap:16px;font-size:13px;padding:11px 0;border-top:1px solid #515151;border-bottom:1px solid #515151}.display-status>span{flex:1;color:#bfbfbf}.display-status b{font-weight:500;color:#ebebeb;margin-left:8px}.display-status>span:last-child b{color:#bababa}#perspective-description{font-size:14px;line-height:1.75;color:#d2d2d2;margin-top:13px;min-height:45px}.perspective-keys{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}.perspective-keys button{position:relative;background:var(--white);color:#efefef;border:1px solid #353535;border-radius:4px;padding:20px 12px 15px;min-height:76px;font-size:16px;box-shadow:none}.perspective-keys button>span{font:11px var(--mono);position:absolute;top:7px;left:9px;color:#bcbcbc}.perspective-keys button[aria-selected=true]{background:var(--white);color:#212121;border-color:#6f6f6f}.perspective-keys button[aria-selected=true]>span{color:#3a3a3a}.perspective-keys button[aria-selected=true]:after{content:"";position:absolute;right:9px;top:9px;width:4px;height:4px;border-radius:50%;background:#ebebeb;box-shadow:none}.perspective-keys button:active{box-shadow:none}.device-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:19px;font:11px var(--mono);color:#4e4e4e;padding:0 2px}.device-indicator{height:4px;width:24px;background:#8c8c8c;border-radius:2px}
/* Reading surfaces: the instrument language becomes a precise editorial grid. */
.outline-content{font-size:var(--body);line-height:1.85;min-width:0}.outline-content>p{max-width:43em;margin:0 0 22px}.outline-content>p:last-child{margin-bottom:0}.outline-content strong{font-weight:600}.outline-content a{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}.outline-content ul{padding-left:23px;margin:15px 0 25px}.outline-content li{margin-bottom:13px;padding-left:4px;max-width:45em}.outline-content blockquote{margin:0 0 23px;padding:25px 29px;background:#dddddd;color:#323232;font-size:20px;line-height:1.85;max-width:46em}.outline-layout{min-width:0}.outline-layout.with-illustration{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.25fr);gap:70px;align-items:center}.outline-content .block-label{display:block;font-size:13px;font-weight:550;line-height:1.6;margin-bottom:9px;color:var(--accent)}.outline-content .block-text{display:block}.outline-content>.block-analysis{font-size:var(--secondary);line-height:1.85;color:var(--muted)}.outline-content>.block-focus{font-size:20px;font-weight:550;margin:25px 0;line-height:1.85;color:var(--ink)}.outline-content>.block-case,.outline-content>.block-scene{font-size:var(--secondary);color:var(--muted);line-height:1.85}.outline-content>.block-case{margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}.outline-content>.block-boundary{font-size:var(--secondary);color:var(--muted);border-top:1px solid var(--line);padding-top:20px}.outline-content>.block-source{border-top:1px solid var(--line);padding-top:20px;margin-top:26px;font-size:14px;color:var(--muted);line-height:1.8}.block-source a{color:inherit}.outline-content .block-source .block-label{font-size:12px;color:var(--muted)}.outline-prose .outline-content{max-width:920px}.outline-approval .outline-layout{grid-template-columns:minmax(0,.8fr) minmax(0,1.3fr);gap:70px}.outline-approval .outline-content>ul{list-style:none;padding:0;margin:25px 0}.outline-approval .outline-content>ul li{font-size:17px;padding:0;margin-bottom:21px}.outline-approval .outline-content>ul li:nth-child(2){color:var(--accent)}.outline-approval .outline-content>p:last-child{font-size:15px;color:var(--muted);border-top:1px solid var(--line);padding-top:19px}.outline-principle blockquote{color:#ececec;background:var(--olive);border:1px solid #656565;box-shadow:none;max-width:none;border-radius:4px;font-size:20px;font-weight:500}.outline-principle .outline-content>ul{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;list-style:none;padding:0;margin:25px 0}.outline-principle .outline-content>ul li{font-size:16px;padding:0;line-height:1.85;color:var(--muted)}.outline-principle .outline-content>p:last-child{max-width:48em;font-size:17px;margin-top:28px}.outline-criteria .outline-content>ul{display:grid;grid-template-columns:1fr 1fr;gap:24px 64px;list-style:none;padding:0;counter-reset:criteria;margin:15px 0 28px}.outline-criteria .outline-content>ul li{position:relative;padding:0 0 0 33px;margin:0;counter-increment:criteria}.outline-criteria .outline-content>ul li:before{content:counter(criteria,decimal-leading-zero);position:absolute;left:0;top:5px;font:12px var(--mono);color:var(--accent)}.outline-criteria .block-boundary{max-width:60em}.outline-rules .outline-content{display:grid;grid-template-columns:1fr 1fr;gap:30px 74px}.outline-rules .outline-content>p{grid-column:1/-1;margin:0;font-size:16px;color:var(--muted);max-width:55em}.original-rule{padding-top:22px;border-top:1px solid #a8a8a8;min-width:0}.original-rule h3{display:flex;gap:14px;font-size:21px;line-height:1.6;letter-spacing:-.02em}.rule-number{font:16px/2 var(--mono);color:var(--accent);flex-shrink:0;min-width:26px}.original-rule .rule-authority{font-size:12px;color:var(--accent);display:block;margin:12px 0 18px}.original-rule p{font-size:17px;line-height:1.9;color:var(--muted)}.outline-chapter-intro .outline-content{max-width:800px;font-size:20px;line-height:1.9}.text-button{font-size:14px;align-self:flex-start;color:var(--accent);padding:8px 0;text-decoration:underline;text-underline-offset:5px}.text-button:hover{color:var(--ink)}.original-path{display:grid;grid-template-columns:repeat(5,1fr);gap:25px;margin:30px 0 0;padding:0;list-style:none;counter-reset:path}.original-path li{counter-increment:path;border-top:1px solid #a9a9a9;padding:21px 0 0;font-size:17px;line-height:1.8;position:relative;margin:0}.original-path li:before{content:counter(path,decimal-leading-zero);display:block;font:13px var(--mono);margin-bottom:18px;color:var(--accent)}.original-path li:after{content:"";position:absolute;top:-3px;left:0;width:5px;height:5px;border-radius:50%;background:var(--orange);box-shadow:none}
/* Original tables: complete horizontal comparison, never replaced by cards. */
.outline-table .page-inner{max-width:1280px;gap:22px}.outline-table .heading-meta{margin-bottom:17px}.outline-table .page-heading h2{font-size:32px;line-height:1.4}.original-table-wrap{max-width:100%;overflow-x:auto;border:1px solid #b5b5b5;border-radius:4px;background:var(--white);box-shadow:none}.original-table{width:100%;table-layout:fixed;border-collapse:collapse;font-size:16px;line-height:1.65}.original-table th,.original-table td{text-align:left;vertical-align:top;padding:12px 16px;border-right:1px solid #d1d1d1;border-bottom:1px solid #d1d1d1;overflow-wrap:break-word;font-weight:400}.original-table tr>:last-child{border-right:0}.original-table tbody tr:last-child>*{border-bottom:0}.original-table thead th{font-size:15px;font-weight:550;background:var(--olive);color:#f0f0f0;border-right-color:#656565}.original-table tbody th{font-size:15px;font-weight:550;background:#e7e7e7}.original-table.table-t1 th:first-child{width:13%}.original-table.table-t1 tbody tr>:nth-child(3){background:#e6e6e6}.original-table.table-t1 thead tr>:nth-child(3){background:#484848;color:#f5f5f5}.original-table.table-t2 th:first-child{width:23%}.original-table.table-t3 th:first-child{width:17%}.original-table.table-t4 th:first-child{width:16%}.original-table.table-t4 th:nth-child(2){width:38%}.outline-table .outline-content>p{font-size:14px;line-height:1.7;margin:13px 0 0;max-width:60em}.outline-table .outline-content>p:first-child{margin:0 0 14px}.outline-table .block-source{padding-top:13px;margin-top:14px}.outline-table .block-source .block-label,.outline-table .block-source .block-text{display:inline}.table-mobile-hint{display:none}.outline-sources .outline-content{font-size:16px}.outline-sources .outline-content>ul{display:grid;grid-template-columns:1fr 1fr;gap:18px 55px;padding:0;list-style:none}.outline-sources .outline-content li{padding:0;margin:0;font-size:14px;line-height:1.8}.outline-sources .outline-content a{color:var(--muted)}
/* Case diagrams are inset into a small aluminium reading surface. */
.outline-illustration{min-width:0}.case-instrument{position:relative;border:1px solid #acacac;background:var(--white);padding:25px;border-radius:7px;box-shadow:none}.case-stamp{font:12px var(--mono);color:#4e4e4e;margin-bottom:22px}.bot-message{display:flex;align-items:center;gap:13px;margin-bottom:18px}.bot-avatar{display:grid;place-items:center;width:35px;height:35px;background:#bebebe;border:1px solid #9a9a9a;border-radius:3px;font-size:16px}.bot-message b{font-size:13px;font-weight:500}.bot-message p{display:flex;gap:5px;align-items:center;font-size:14px}.bot-message svg,.complete svg{width:17px;height:17px;fill:none;stroke:#464646;stroke-width:2}.relation-label{display:block;text-align:right;font-size:12px;color:#565656;margin-bottom:15px}.mock{background:#fafafa;border:1px solid #b7b7b7;border-radius:4px;overflow:hidden}.mock-head{display:flex;align-items:center;justify-content:space-between;padding:13px 17px;border-bottom:1px solid #d1d1d1;font-size:13px}.status{font-size:12px;background:#dddddd;color:#474747;padding:2px 8px}.status.done{background:#e0e0e0;color:#3d3d3d}.mock h3{font-size:19px;letter-spacing:-.02em;padding:17px 17px 10px}.mock dl{padding:0 17px 15px;font-size:14px}.mock dl>div{display:flex;gap:20px;margin:8px 0}.mock dt{color:var(--muted);min-width:60px}.mock-bottom{display:flex;justify-content:flex-end;gap:10px;padding:13px 17px;background:#efefef}.mock-primary,.mock-secondary{display:inline-flex;align-items:center;justify-content:center;padding:6px 18px;font-size:14px;border-radius:2px}.mock-primary{background:#515151;color:#ffffff}.mock-secondary{background:#fafafa;border:1px solid #afafaf;color:#3c3c3c}.complete{display:flex;align-items:center;gap:6px;font-size:14px}.small-label{display:block;font-size:13px;color:#565656;margin-bottom:10px}.concept-map{display:grid;grid-template-columns:1fr 24px 1fr;align-items:center}.concept-map>div{background:#f7f7f7;border:1px solid #b6b6b6;padding:20px 14px;border-radius:2px}.concept-map h3{font-size:22px;line-height:1.5;margin:8px 0}.concept-map p{font-size:13px;color:var(--muted)}.map-question{text-align:center;color:var(--accent);font:28px var(--mono)}.diagram-caption{font-size:14px;color:var(--muted);margin-top:20px}.priority-art .switch-line{font-size:14px;display:flex;align-items:center;justify-content:space-between;gap:15px}.priority-art .text-button{font-size:13px}.document-lines{padding:25px 0}.document-lines i{display:block;height:6px;background:#bebebe;width:70%;margin:12px 0}.document-lines i:nth-child(2){width:94%}.document-lines i:nth-child(3){width:50%}.mock-actions{display:flex;justify-content:flex-end;gap:7px}.mock-actions>span{padding:6px 12px}.expectation-art{display:grid;grid-template-columns:52px 1fr;gap:18px;align-items:center}.phone-control{width:50px;height:50px;border:1px solid #a8a8a8;background:#f2f2f2;display:grid;place-content:center;grid-row:1/3;border-radius:4px}.phone-control svg{width:25px;height:25px;fill:none;stroke:var(--ink);stroke-width:1.6}.expectation-art span{font-size:13px;color:var(--muted);display:block;margin-bottom:6px}.expectation-art strong{font-size:20px;font-weight:550}.actual{border-top:1px solid #b6b6b6;padding-top:15px}.actual>div{margin-top:12px}.actual p{font-size:14px;border-top:1px solid #bdbdbd;padding:7px 0}.journey{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.journey>div{padding:15px 10px;background:#f6f6f6;border:1px solid #b5b5b5;border-radius:3px}.journey>div:nth-child(2){background:#dfdfdf}.journey span{display:block;font-size:12px;color:#585858;margin-bottom:15px}.journey b{font-size:15px;font-weight:550;line-height:1.65;display:block}.journey svg{grid-column:1/-1;width:100%;height:50px;stroke:#727272;stroke-width:1.5;fill:none}.state-art{background:var(--screen);color:#e8e8e8;border:4px solid #9a9a9a;padding:13px 20px;border-radius:4px;box-shadow:none}.state-art>div{display:flex;align-items:center;gap:12px;padding:17px 0}.state-art>div+div{border-top:1px solid #595959}.state-art strong{font-size:20px;font-weight:500}.state-art svg{width:22px;height:22px;fill:none;stroke:#bababa;stroke-width:2}.state-dot{width:19px;height:19px;border:1px solid #a7a7a7;border-radius:50%;position:relative;flex-shrink:0}.state-dot:after{content:"";position:absolute;inset:5px;background:#a7a7a7;border-radius:50%}.recovery-art{display:flex;flex-wrap:wrap;align-items:center;gap:9px}.recovery-art>span{font-size:14px}.recovery-art>strong{font-size:18px;font-weight:500;background:#e2e2e2;border:1px solid #b9b9b9;padding:20px 16px;border-radius:3px}.recovery-art svg{width:20px;height:20px;fill:none;stroke:#5f5f5f;stroke-width:1.5}.missing-return{width:100%;margin-top:20px;border-top:1px dashed #9d9d9d;padding-top:18px;font-size:14px;color:#535353}
/* Drawers and working controls share the same material and focus language. */
dialog{padding:0;border:1px solid #a1a1a1;border-radius:7px;background:var(--paper);color:var(--ink);width:min(820px,calc(100% - 36px));max-height:86svh;box-shadow:none}dialog[open]{display:flex;flex-direction:column;animation:panel-in .26s var(--ease)}dialog::backdrop{background:#22222288;backdrop-filter:blur(5px)}.wide-dialog{width:min(1000px,calc(100% - 36px))}.dialog-head{display:flex;justify-content:space-between;align-items:center;padding:23px 32px;gap:24px;background:#dfdfdf;border-bottom:1px solid #b5b5b5;flex-shrink:0}.dialog-head h2{font-size:25px}.dialog-head p{font-size:13px;color:var(--muted)}.dialog-head button{width:40px;height:40px;font-size:28px;flex-shrink:0}.dialog-head button:hover{background:#cacaca}.dialog-body{padding:25px 32px;overflow-y:auto;overscroll-behavior:contain;scrollbar-color:#9f9f9f #e1e1e1}.menu-group{margin-bottom:30px}.menu-group h3{font-size:17px;line-height:1.7;margin-bottom:17px}.menu-group button{display:flex;align-items:baseline;width:100%;text-align:left;gap:18px;padding:7px 0}.menu-group button:hover{color:var(--accent)}.menu-group button span{font:12px var(--mono);color:var(--muted)}.menu-subsection{padding-bottom:13px;margin-bottom:10px;border-bottom:1px solid var(--line)}.menu-group .menu-section-title{font-size:15px;font-weight:550}.menu-section-title>span{margin-left:auto;white-space:nowrap}.menu-group .menu-part{font-size:14px;color:var(--muted);padding-left:18px}.menu-group .menu-intro{font-size:15px}.search-label{font-size:14px;display:block;margin-bottom:8px}#rule-search,.mini-form input{background:#f8f8f8;color:var(--ink);border:1px solid #9e9e9e;border-radius:3px;padding:11px 14px;width:100%;font-size:16px;box-shadow:none}#rule-count{font:13px var(--mono);color:var(--muted);margin:18px 0}#rule-list details{border-top:1px solid var(--line);padding:18px 0}#rule-list summary{font-size:18px;cursor:pointer;line-height:1.6}#rule-list .rule-kind{font-size:12px;margin-top:16px;color:var(--accent)}#rule-list details>p:last-child{font-size:16px;margin-top:10px;line-height:1.85}#rule-list .empty-search{font-size:16px;padding:24px 0;color:var(--muted)}#source-body>p{font-size:16px;margin-bottom:20px}#source-body li{font-size:14px;margin:9px 0}#source-body a{color:var(--accent);text-decoration:underline}.form-study{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:start}.mini-form{background:#f7f7f7;border:1px solid #aeaeae;padding:23px;border-radius:4px}.switch-line{display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:15px}.switch-line>span{font-size:12px;color:var(--muted)}.mini-form label{display:block;margin:16px 0 7px;font-size:14px}.mini-form .solid{width:100%;justify-content:center;margin-top:23px}.mini-form input[aria-invalid=true]{border-color:var(--danger)}.field-error{color:var(--danger);font-size:14px;margin-top:5px;line-height:1.6}.mini-form .solid:disabled{background:#dbdbdb;color:#565656;border-color:#b8b8b8;opacity:1;box-shadow:none}.form-result{font-size:14px;color:#404040;margin-top:15px}.segmented{display:flex;gap:4px;padding:4px;background:#dbdbdb;align-self:flex-start}.segmented button{font-size:14px;padding:10px 12px;min-height:42px}.segmented button[aria-pressed=true]{background:var(--olive);color:#f4f4f4;box-shadow:none}.form-explanation h3{font-size:24px;margin:25px 0 18px}.form-explanation>p{font-size:16px;color:var(--muted);margin-bottom:20px}body:has(dialog[open]) .site-header,body:has(dialog[open]) .page-control{pointer-events:none}.reader-bar{position:sticky;top:0;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:20px var(--pad);background:var(--paper);border-bottom:1px solid var(--line);font-size:14px}.reader{max-width:1050px;padding:45px 42px 90px;margin:auto;font-size:17px;line-height:1.9}.reader h1{font-size:35px;margin-bottom:25px}.reader h2{font-size:28px;margin:50px 0 24px}.reader h3{font-size:22px;margin:32px 0 18px}.reader p,.reader ul{margin-bottom:20px}.reader a{color:var(--accent);text-decoration:underline}.reader .table-wrap{overflow-x:auto;margin:25px 0}.reader table{border-collapse:collapse;min-width:850px;font-size:15px;line-height:1.7}.reader th,.reader td{border:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}.reader th{background:#dedede}.reader blockquote{margin:25px 0;padding:20px;background:#dedede}.no-script{position:fixed;inset:100px 25px auto;padding:25px;background:var(--white);z-index:30}
@keyframes panel-in{from{opacity:.3;transform:translateY(13px)}to{opacity:1;transform:none}}@keyframes device-in{from{opacity:.25;transform:translateY(16px) rotate(-3deg)}to{opacity:1;transform:translateY(0) rotate(-1.5deg)}}@keyframes text-in{from{opacity:.35;transform:translateY(7px)}to{opacity:1;transform:none}}@keyframes lcd-in{from{opacity:.35;filter:brightness(1.35)}to{opacity:1;filter:brightness(1)}}.cover-heading{animation:text-in .5s var(--ease)}.observer-device{animation:device-in .7s var(--ease)}.display-change #perspective-question,.display-change #perspective-description{animation:lcd-in .24s var(--ease)}.page.arriving .page-heading{animation:text-in .32s var(--ease)}
@media(min-width:761px) and (max-height:800px), (min-width:761px) and (max-width:1300px) and (max-height:900px){:root{--title:30px;--body:17px;--secondary:15px}.page{padding-top:98px;padding-bottom:84px}.page-inner{gap:24px}.heading-meta{margin-bottom:19px}.cover .page-inner{gap:28px}.cover h1{font-size:43px}.cover-stage{grid-template-columns:170px minmax(410px,540px) 170px;gap:32px}.observer-device{padding:25px 28px 17px}.device-top{margin-bottom:16px}.device-display{min-height:214px;padding:15px 19px}.device-display #perspective-question{font-size:23px;margin:16px 0 13px}.perspective-keys{margin-top:17px}.perspective-keys button{min-height:66px;padding:18px 12px 10px}.device-bottom{margin-top:16px}.original-rule p{font-size:16px}.original-rule h3{font-size:20px}.original-rule .rule-authority{margin:10px 0 14px}.outline-rules .outline-content{gap:23px 65px}.outline-content>.block-focus{font-size:19px;margin:22px 0}.outline-content blockquote{font-size:18px;padding:21px 25px}.outline-table .page-inner{gap:16px}.outline-table .page-heading h2{font-size:29px}.original-table{font-size:15px;line-height:1.5}.original-table th,.original-table td{padding:8px 13px}.original-table thead th,.original-table tbody th{font-size:14px}.outline-table .outline-content>p{font-size:14px;line-height:1.6}.outline-principle .outline-content>p:last-child{font-size:16px}.case-instrument{padding:21px}.outline-layout.with-illustration,.outline-approval .outline-layout{gap:52px}}
@media(max-width:1100px) and (min-width:761px){.site-header nav button{padding:8px 9px;font-size:13px}.site-header nav button:before{margin-right:6px}.header-tools{gap:17px}.cover-stage{grid-template-columns:170px minmax(390px,550px);gap:30px}.cover-note{display:none}.cover h1{font-size:43px}.outline-layout.with-illustration,.outline-approval .outline-layout{gap:36px}.case-instrument{padding:18px}}
@media(max-width:760px){:root{--title:27px;--body:16px;--secondary:15px}.site-header{min-height:64px;padding:0 23px}.brand{font-size:20px}.site-header nav,.header-tools>a,#fullscreen{display:none}.header-tools{gap:10px}.header-tools button{font-size:14px}.page{padding:96px 24px 98px;align-items:flex-start;min-height:100svh}.page-inner{gap:28px}.page-heading h2{font-size:27px;line-height:1.5;letter-spacing:-.025em;text-wrap:pretty}.heading-meta{align-items:flex-start;margin-bottom:23px;gap:18px}.outline-chapter{font-size:12px;max-width:24em}.part-count{font-size:12px;line-height:1.8}.title-prefix{white-space:nowrap}.page-control{padding:8px 23px;gap:12px;min-height:62px}.page-control>span:first-child{min-width:56px;max-width:60px;font-size:12px}.page-track{display:none}.keyboard-hint{display:none}.pager{margin-left:auto;gap:9px}.pager button{width:34px;height:33px;font-size:19px}.pager>span{font-size:12px;padding:11px;min-width:82px}.cover .page-inner{gap:30px}.cover-heading{text-align:left}.hero-context{justify-content:flex-start;flex-wrap:wrap;gap:8px;line-height:1.7;font-size:12px;margin-bottom:20px}.hero-context>span{margin:0;padding-left:10px}.cover h1{font-size:32px;line-height:1.5;letter-spacing:-.04em}.cover-stage{display:flex;flex-direction:column;gap:30px;align-items:stretch}.observer-device{order:0;padding:25px 20px 18px;transform:rotate(-1deg);border-radius:10px}.cover-aside{order:1;font-size:15px}.cover-aside-title{font-size:17px;margin-bottom:12px}.cover-aside p br{display:none}.cover-aside .caption{display:inline-block;margin-right:15px;font-size:12px}.cover-aside .start{margin-top:18px}.cover-note{display:none}.device-top{gap:10px;margin-bottom:17px}.device-top b{font-size:18px}.device-top>span{font-size:11px}.device-vents{width:31px;height:16px}.device-display{padding:15px 14px;border-width:4px;min-height:239px}.display-top{font-size:11px}.device-display #perspective-question{font-size:21px;margin:20px 0 17px}.display-status{gap:12px;font-size:12px}.display-status b{display:block;margin:4px 0 0}.display-case{display:none}#perspective-description{font-size:13px;min-height:68px}.perspective-keys{gap:8px;margin-top:18px}.perspective-keys button{font-size:14px;min-height:68px;padding:20px 5px 12px}.perspective-keys button>span{font-size:10px}.device-bottom{font-size:10px;margin-top:17px}.outline-layout.with-illustration,.outline-approval .outline-layout{display:flex;flex-direction:column;gap:30px;align-items:stretch}.outline-layout.with-illustration .outline-content{order:0}.outline-illustration{order:1}.outline-content>p{margin-bottom:22px}.outline-content>.block-focus{font-size:18px;margin:25px 0}.outline-content .block-label{font-size:13px}.outline-content blockquote{font-size:18px;padding:22px}.outline-approval .outline-content>ul li{font-size:16px}.outline-criteria .outline-content>ul{grid-template-columns:1fr;gap:22px}.outline-principle .outline-content>ul{grid-template-columns:1fr;gap:20px}.outline-principle .outline-content>p:last-child{font-size:16px}.outline-rules .outline-content{grid-template-columns:1fr;gap:30px}.original-rule h3{font-size:20px}.original-rule p{font-size:16px}.outline-chapter-intro .outline-content{font-size:18px}.original-path{grid-template-columns:1fr;gap:0;margin-top:25px}.original-path li{padding:0 0 23px 35px;border-top:0;border-left:1px solid #a3a3a3;margin-left:4px;font-size:16px;min-height:68px}.original-path li:before{position:absolute;left:17px;top:4px;font-size:11px;margin:0;transform:translateX(-100%);background:var(--paper)}.original-path li:after{left:-3px;top:10px;box-shadow:none}.outline-table .page-heading h2{font-size:27px}.original-table{min-width:920px;font-size:16px;line-height:1.7}.original-table th,.original-table td{padding:15px 17px}.original-table thead th,.original-table tbody th{font-size:15px}.original-table.table-t3{min-width:650px}.original-table.table-t4{min-width:850px}.outline-table .outline-content>.table-mobile-hint{display:block;font-size:13px;color:var(--muted);margin-top:12px}.outline-table .outline-content>p{font-size:14px;line-height:1.8}.outline-sources .outline-content>ul{grid-template-columns:1fr;gap:22px}.case-instrument{padding:22px}.form-study{grid-template-columns:1fr;gap:28px}.dialog-head{padding:19px 22px}.dialog-head h2{font-size:22px}.dialog-body{padding:22px}.reader-bar{padding:16px 22px;font-size:13px}.reader-bar>span{display:none}.reader{padding:30px 24px 80px;font-size:16px}.reader h1{font-size:29px}.reader h2{font-size:25px}.reader h3{font-size:21px}html{scroll-snap-type:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}
@media print{.site-header,.page-control,.skip,dialog{display:none!important}.page{padding:30px;min-height:0;break-after:page}.observer-device{box-shadow:none;transform:none}.reader-bar{display:none}}

/* Compact presentation keeps the instrument and captions above the control rail. */
.outline-signal-overview .block-analysis{max-width:34em}
.outline-signal-overview .block-focus{max-width:28em}
.outline-table .outline-content>p{max-width:44em}
.outline-table .outline-content>.table-mobile-hint{max-width:none}
@media(min-width:761px){
 .rule-solo .outline-content,.rule-continuation .outline-content{grid-template-columns:1fr;gap:30px}
 .rule-solo .original-rule,.rule-continuation .original-rule{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.3fr);column-gap:65px;row-gap:10px;align-content:start}
 .rule-solo .original-rule{border-top:0;padding-top:6px}
 .rule-solo .original-rule h3,.rule-continuation .original-rule h3{grid-column:1;grid-row:1;margin:0;align-self:start}
 .rule-solo .original-rule .rule-authority,.rule-continuation .original-rule .rule-authority{grid-column:1;grid-row:2;margin:0;align-self:start}
 .rule-solo .original-rule p,.rule-continuation .original-rule p{grid-column:2;grid-row:1/3;max-width:38em}
 .rule-solo .original-rule{display:block}
 .rule-solo .original-rule h3{background:var(--olive);color:#efefef;padding:21px 25px;border-radius:3px;font-size:22px;line-height:1.65;gap:17px}
 .rule-solo .rule-number{color:#cecece;font-size:17px}
 .rule-solo .original-rule .rule-authority{margin:16px 0}
 .rule-solo .original-rule p{max-width:46em}
}
@media(max-width:760px){
 .outline-signal-overview .outline-layout.with-illustration{display:flex;gap:24px}
 .outline-signal-overview .outline-content{display:contents}
 .outline-signal-overview .outline-illustration{order:0}
 .outline-signal-overview .block-focus{order:1;margin:0}
 .outline-signal-overview .block-analysis{order:2;margin:0}
 .outline-signal-overview .block-case{order:3;margin:0}
}
@media(min-width:761px) and (max-height:800px), (min-width:761px) and (max-width:1300px) and (max-height:900px){
 .cover{padding-top:96px;padding-bottom:80px}.cover .page-inner{gap:16px}.cover h1{font-size:36px}.hero-context{font-size:12px;margin-bottom:12px}
 .observer-device{padding:20px 28px 15px}.device-top{margin-bottom:12px}
 .device-display{padding:12px 19px;min-height:210px}.device-display #perspective-question{margin:12px 0;font-size:23px}
 .display-status{padding:8px 0}#perspective-description{min-height:42px;line-height:1.6}
 .perspective-keys{margin-top:14px}.perspective-keys button{min-height:58px;padding:17px 10px 9px}.device-bottom{margin-top:12px}
 .outline-approval .case-instrument{padding:18px}.outline-approval .bot-message{margin-bottom:13px}.outline-approval .relation-label{margin-bottom:11px}
 .outline-approval .mock-head{padding:10px 17px}.outline-approval .mock h3{padding-top:14px;padding-bottom:8px}.outline-approval .mock dl{padding-bottom:12px}.outline-approval .mock-bottom{padding-top:10px;padding-bottom:10px}
 .outline-path .outline-content>p{margin-bottom:16px}.original-path{margin-top:20px}
}
/* Persistent reading directory and subsection-sized presentation pages. */
:root{--sidebar-width:280px;--rail-width:66px;--workspace-pad:32px}
.presentation-sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar-width);z-index:30;background:#e3e3e3;border-right:1px solid #b4b4b4;box-shadow:none;display:flex;flex-direction:column;min-height:0}
.sidebar-head{height:78px;display:flex;justify-content:space-between;gap:10px;align-items:center;padding:0 19px;flex-shrink:0;border-bottom:1px solid #c4c4c4}
.sidebar-head .brand{font-size:21px;align-items:center}.sidebar-head .brand-dot{width:6px;height:6px}.sidebar-head>button{padding:8px;display:grid;place-items:center;width:36px;height:36px;border:1px solid transparent;border-radius:3px}.sidebar-head>button:hover{background:#d3d3d3;border-color:#b6b6b6}.sidebar-head svg{width:21px;height:21px;stroke-width:1.4}
.sidebar-directory{overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#a6a6a6 transparent;flex:1;min-height:0;padding:16px 12px 24px}
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