:root{--paper:#f5f6f3;--white:#fff;--ink:#18333c;--muted:#63767b;--line:#e1e7e4;--green:#267263;--lime:#c5e89b;--pale:#f0f6ee;--red:#9e5b4b;--radius:18px;font-family:Arial,'Helvetica Neue',sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0;font-size:15px;line-height:1.55}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.4}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #6d9c8f;outline-offset:4px}a{color:inherit;text-decoration:none}button{color:inherit}h1,h2,h3,p{margin:0}h2{font-size:18px;letter-spacing:-.35px}h3{font-size:18px}.icon{width:21px;height:21px;flex:none;vertical-align:middle}.skip{position:fixed;top:-60px;right:20px;background:var(--ink);color:white;padding:10px;z-index:99}.skip:focus{top:8px}.topbar{height:88px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(4vw,24px);gap:18px;background:#fff}.brand{display:flex;gap:11px;align-items:center;min-width:190px}.brand-mark{display:grid;place-items:center;background:var(--ink);color:var(--lime);height:42px;width:42px;border-radius:12px}.brand-mark .icon{width:27px;height:27px}.brand strong{font-size:24px;line-height:1.05;letter-spacing:-1px}.brand strong span{display:block;font-size:11px;font-weight:400;color:var(--muted);letter-spacing:0;margin-top:7px}nav{display:flex;gap:4px;padding:5px;background:var(--paper);border:1px solid var(--line);border-radius:12px}nav button{background:none;border:0;padding:8px 24px;border-radius:8px;color:var(--muted);font-weight:600}nav .selected{background:var(--ink);color:white}.download{display:flex;gap:9px;align-items:center;font-size:13px;font-weight:600;border-bottom:1px solid #bcc9c4;padding:8px 0}main{max-width:1370px;margin:0 auto;padding:40px 42px 0}.intro{display:flex;align-items:center;justify-content:space-between;gap:25px;margin-bottom:30px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.5px;color:var(--muted)}.eyebrow span{margin:0 10px;color:#a5b2b1}h1{font-size:35px;line-height:1.25;font-weight:600;letter-spacing:-1.15px;margin:10px 0}.intro p{font-size:15px;color:var(--muted)}.intro-aside{font-size:12px;display:flex;align-items:center;gap:8px;white-space:nowrap;color:var(--muted)}.status-dot,.dot{width:7px;height:7px;display:inline-block;border-radius:50%;background:var(--green)}.question-tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-bottom:16px}.question-tab{display:flex;align-items:center;gap:13px;border:1px solid var(--line);background:transparent;border-radius:10px;padding:14px 16px;font-size:15px;font-weight:600;transition:background .15s}.question-tab span{font-size:12px;font-weight:400;color:var(--muted);font-variant-numeric:tabular-nums}.question-tab small{margin-right:auto;font-weight:400;color:var(--muted);font-size:11px}.question-tab.active{background:var(--ink);border-color:var(--ink);color:white}.question-tab.active span,.question-tab.active small{color:#bbcfcc}.question-tab:not(.active):hover{background:#eaf0eb}.question-card{display:grid;grid-template-columns:220px 1fr;gap:30px;padding:24px 28px;background:#eef1eb;border:1px solid #e0e6dc;border-radius:var(--radius);margin-bottom:26px}.question-title{border-left:1px solid #d8dfd5}.question-title h2{margin-top:8px;font-size:22px}.question-card p{font-size:14px;line-height:1.75}.question-card .ask{font-weight:600;margin-top:4px}.question-note{color:var(--muted);margin-top:9px!important;font-size:12px!important}.workspace{display:grid;grid-template-columns:326px minmax(0,1fr);gap:25px;align-items:start}aside{display:grid;gap:18px}.panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px}.section-top{display:flex;align-items:center;gap:10px;margin-bottom:20px}.section-top h2{flex:1}.step{display:grid;place-items:center;border:1px solid var(--line);border-radius:8px;width:28px;height:28px;flex:none;font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}.tag{font-size:10px;padding:4px 8px;border-radius:5px;background:var(--paper);color:var(--muted);white-space:nowrap}.facts{margin:4px 0 22px}.facts>div{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid #eef0ed}.facts dt{font-size:13px;color:var(--muted)}.facts dt i{font-size:11px;font-style:normal;margin-right:5px}.facts dd{margin:0;font-size:21px;font-variant-numeric:tabular-nums;direction:ltr}.model-note{font-size:11px;color:var(--green);margin-bottom:20px;display:flex;align-items:center;gap:7px}.button{border:1px solid var(--line);border-radius:9px;padding:11px 15px;display:flex;align-items:center;justify-content:center;gap:12px;font-weight:600;font-size:13px;background:white}.button.primary{background:var(--ink);color:white;border-color:var(--ink)}.button:hover{filter:brightness(1.12)}.full{width:100%}.small{font-size:11px;line-height:1.7}.subtle{color:var(--muted)}.panel>.button+.small{margin-top:9px;text-align:center}.field{margin-top:17px}.field-label{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;gap:5px}.field-label label{font-size:12px;font-weight:600}.field input,.field select,.oc-toolbar select{background:#f8faf7;border:1px solid #dce4de;border-radius:8px;width:100%;height:43px;padding:0 11px;color:var(--ink)}.field input{direction:ltr;text-align:right;font-size:17px;font-variant-numeric:tabular-nums}.field select{font-size:12px;cursor:pointer}.field input:focus,.field select:focus{border-color:var(--green);background:white}.two-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}.invalid input,.invalid select{border-color:var(--red)}.error{display:block;color:#a14535;font-size:12px;line-height:1.6;margin-top:7px}.limit-note{font-size:10px;line-height:1.7;margin-top:20px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line)}.help-wrap{position:relative;display:inline-flex;align-items:center;flex:none}.help{width:18px;height:18px;display:inline-grid;place-items:center;border:1px solid #bac8c2;border-radius:50%;background:transparent;font-size:11px;padding:0;color:var(--muted)}.tooltip{display:none;position:absolute;bottom:calc(100% + 10px);right:-10px;width:230px;background:var(--ink);color:#fff;border-radius:10px;padding:12px 14px;font-size:12px;line-height:1.6;font-weight:400;text-align:right;z-index:20}.tooltip:after{content:'';position:absolute;bottom:-5px;right:14px;transform:rotate(45deg);width:10px;height:10px;background:var(--ink)}.help-wrap:hover .tooltip,.help-wrap:focus-within .tooltip,.help-wrap.pinned .tooltip{display:block}.observed label{font-size:13px}.stepper{display:flex;direction:ltr;align-items:center;gap:10px;margin:13px 0}.stepper button{width:36px;height:36px;border:1px solid var(--line);background:var(--paper);border-radius:8px;font-size:21px}.stepper input{width:0;min-width:0;flex:1;height:43px;border:1px solid var(--line);border-radius:8px;background:white;text-align:center;font-size:20px;appearance:textfield;-moz-appearance:textfield}.stepper input::placeholder{font-size:12px;color:#91a19d}.stepper input::-webkit-inner-spin-button{display:none}.decision-message{padding:13px;border-radius:9px;display:flex;align-items:center;gap:9px}.decision-message.yes{color:var(--green);background:var(--pale)}.decision-message.no{color:var(--red);background:#fcf2ee}.decision-message strong{display:block;font-size:14px}.decision-message span{font-size:11px;display:block;margin-top:4px}.text-button{background:transparent;border:0;text-decoration:underline;font-size:11px;color:var(--muted);padding:9px 0 0}.quiet-note{display:flex;gap:10px;padding:0 15px;color:var(--muted);font-size:11px;line-height:1.8}.quiet-note .icon{width:18px;margin-top:4px}.results{display:grid;gap:18px}.result-strip{background:var(--ink);color:white;display:flex;align-items:center;gap:18px;border-radius:var(--radius);padding:22px 26px}.result-strip .eyebrow{color:#a6bfbd}.result-strip h2{font-size:15px;margin-top:3px;font-weight:400}.result-strip>strong{font-size:33px;font-weight:500;color:var(--lime);margin-right:auto;letter-spacing:-1px;font-variant-numeric:tabular-nums;white-space:nowrap}.icon-button{width:32px;height:32px;border:1px solid var(--line);background:transparent;border-radius:8px;display:grid;place-items:center;padding:5px;flex:none}.result-strip .icon-button{border-color:#47616a;color:#d4e4df}.result-strip .icon-button:hover{background:#29464f}.section-description{font-size:12px;color:var(--muted);margin-top:-10px}.flow-panel{padding:25px 30px 0}.flow{padding:25px 22px 0;display:flex;align-items:center;flex-direction:column}.flow-node{background:#f8faf8;border:1px solid #e2e9e4;border-radius:11px;text-align:center;padding:11px 24px;min-width:220px}.node-kicker{font-size:10px;color:var(--muted);display:block;margin-bottom:2px}.flow-node strong{font-size:15px;font-weight:500}.sample{display:flex;gap:20px;align-items:center;text-align:right;background:#f0f5ed;min-width:270px;border-color:#d6e3d0}.sample b{font-size:22px;line-height:1.3;margin-left:4px;font-weight:500}.sample-glyph{display:grid;grid-template-columns:repeat(4,6px);gap:4px;padding:3px;direction:ltr}.sample-glyph i{width:6px;height:6px;border-radius:2px;background:#bed2c0}.sample-glyph i.lit{background:var(--green)}.connector{width:1px;height:21px;background:#c8d5cd;position:relative}.connector:after{content:'';position:absolute;bottom:0;width:5px;height:5px;border-left:1px solid #9fb1a5;border-bottom:1px solid #9fb1a5;transform:translateX(2px) rotate(-45deg)}.count-node{display:flex;align-items:center;justify-content:center;gap:9px;font-size:12px;border:1px solid var(--line);border-radius:8px;padding:9px 16px;background:white}.count-node b{color:var(--green)}.fork{height:34px;width:58%;display:flex;position:relative}.fork:before{content:'';position:absolute;width:1px;height:17px;top:0;right:50%;background:#c8d5cd}.fork span{width:50%;height:17px;border-top:1px solid #c8d5cd;margin-top:17px}.fork span:first-child{border-right:1px solid #c8d5cd;border-radius:0 7px 0 0}.fork span:last-child{border-left:1px solid #c8d5cd;border-radius:7px 0 0 0}.branches{display:grid;grid-template-columns:1fr 1fr;gap:20px;width:100%;padding-bottom:23px}.branch{border:1px solid var(--line);border-radius:13px;position:relative;text-align:center;padding:17px 10px 14px;transition:opacity .2s,border-color .2s;background:#fafbf9}.branch.accept{background:#f3f8f0;border-color:#dbe8d4}.branch.reject{background:#fcf9f6;border-color:#eadfd6}.branch-symbol{position:absolute;right:14px;top:14px;border-radius:50%;width:23px;height:23px;display:grid;place-items:center}.branch-symbol .icon{width:15px;height:15px}.accept .branch-symbol{background:#e1eed9;color:var(--green)}.reject .branch-symbol{background:#f4e7de;color:var(--red)}.branch-condition{display:block;color:var(--muted);font-size:12px}.branch h3{font-size:16px;font-weight:500;margin-top:3px}.branch-prob{font-size:25px;line-height:1.4;margin-top:8px;font-variant-numeric:tabular-nums}.branch-caption{font-size:10px;color:var(--muted)}.branch.active{border:2px solid var(--green);padding:16px 9px 13px}.reject.active{border-color:var(--red)}.branch.muted{opacity:.45}.selected-path{font-size:10px;display:block;margin-top:5px;font-weight:700}.flow-insight{margin:0 -30px;padding:12px 25px;border-top:1px solid var(--line);font-size:11px;color:var(--muted);text-align:center;background:#fbfcfa;border-radius:0 0 18px 18px}.chart-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:13px;font-size:13px}.chart-head b{font-weight:400;font-size:12px;margin-right:8px;display:inline-block;color:var(--muted)}.chart-head strong{font-size:20px;font-weight:500;color:var(--green);white-space:nowrap}.distribution-svg{display:block;width:100%;height:auto}.gridline{stroke:#e8eeea;stroke-width:1;stroke-dasharray:3 4}.axis{fill:#6b7d79;font-size:11px;font-family:Arial,sans-serif}.distribution .subtle{font-size:10px;margin-top:10px}.assumption{border-right:3px solid #b7bc87;background:#f4f4e6;border-radius:8px;padding:11px 16px;font-size:12px;color:#626442}.invalid-panel{padding:40px;min-height:350px}.invalid-panel h2{margin:15px 0}.invalid-panel p,.invalid-panel li{font-size:14px;color:var(--muted)}.invalid-panel ul{padding-right:20px}.invalid-panel li{margin:10px 0}.oc,.method{padding:0}.oc summary,.method summary{display:flex;align-items:center;justify-content:space-between;cursor:pointer;list-style:none;padding:21px 24px}.oc summary::-webkit-details-marker,.method summary::-webkit-details-marker{display:none}summary>div{display:flex;gap:13px;align-items:center}summary>div>.icon{color:var(--muted)}summary strong{display:block;font-size:14px;font-weight:500}summary small{display:block;font-size:11px;color:var(--muted);margin-top:2px}details[open] summary>.icon{transform:rotate(180deg)}.details-body{border-top:1px solid var(--line);padding:20px 24px;font-size:13px}.details-body p{margin-bottom:13px}.formula{background:var(--paper);border-radius:8px;padding:14px;text-align:left;font-size:14px;overflow-wrap:anywhere;margin:5px 0 14px;font-family:Georgia,serif}.oc-toolbar{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-size:12px}.oc-toolbar select{width:85px;height:33px}.oc #oc-chart svg{width:100%;display:block}.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,15px);padding:12px 22px;border-radius:10px;background:var(--ink);color:white;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:50;font-size:13px}.toast.visible{opacity:1;transform:translate(-50%,0)}footer{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:24px 0;margin-top:40px;color:var(--muted);font-size:11px}footer b{font-weight:400;margin:0 9px;color:#aab7b1}@media(min-width:1400px){.topbar{padding:0 calc((100vw - 1286px)/2)}}@media(max-width:1100px){main{padding:30px 24px 0}.workspace{grid-template-columns:285px minmax(0,1fr);gap:18px}.panel{padding:20px}.flow-panel{padding:22px 22px 0}.flow-insight{margin:0 -22px}.flow{padding:23px 0 0}.question-tab{padding:12px;gap:8px}.question-tab small{display:none}h1{font-size:29px}.intro-aside{display:none}.result-strip{padding:20px}.result-strip>strong{font-size:28px}.question-card{grid-template-columns:180px 1fr;gap:20px}.branch-symbol{right:10px}.branch-prob{font-size:22px}.chart-head b{display:block;margin:3px 0 0}.tooltip{right:auto;left:-10px}.tooltip:after{right:auto;left:14px}}@media(max-width:760px){.topbar{height:auto;min-height:80px;flex-wrap:wrap;padding:16px 20px;gap:16px}.brand{min-width:0}.brand strong{font-size:23px}.brand strong span{font-size:10px}.download{margin-right:auto;font-size:12px}.topbar nav{order:3;width:100%;justify-content:center}.topbar nav button{flex:1}main{padding:26px 16px 0}.intro{margin-bottom:24px}h1{font-size:28px;max-width:330px}.intro p{font-size:13px;max-width:330px}.question-tabs{gap:6px}.question-tab{padding:9px 3px;display:flex;flex-direction:column;gap:1px;font-size:12px}.question-tab span{font-size:10px}.question-card{display:block;padding:19px}.question-title{border:0;margin-bottom:12px}.question-title h2{font-size:20px;margin-top:3px}.question-card p{font-size:13px}.workspace{display:flex;flex-direction:column;gap:18px}aside,.results{width:100%}aside{grid-template-columns:1fr}.quiet-note{display:none}.facts{display:grid;grid-template-columns:1fr 1fr;gap:0 20px;margin-bottom:14px}.facts dd{font-size:19px}.facts>div{gap:8px}.observed .section-top{margin-bottom:12px}.observed .stepper{max-width:300px}.panel{border-radius:14px}.result-strip{padding:20px 16px;gap:10px}.result-strip>strong{font-size:29px}.result-strip h2{font-size:13px}.result-strip .eyebrow{font-size:10px}.branch{padding-top:23px}.branch-symbol{right:8px;top:8px;width:19px;height:19px}.branch-condition{font-size:11px}.branch-prob{font-size:21px}.branches{gap:12px}.flow-insight{font-size:10px;padding:12px 16px}.flow-panel .section-top{gap:7px}.section-top h2{font-size:17px}.section-description{font-size:11px}.count-node{font-size:11px}.tooltip{position:fixed;bottom:20px;left:20px;right:20px;width:auto;max-width:none;font-size:14px}.tooltip:after{display:none}.chart-head{font-size:12px}.chart-head strong{font-size:19px}footer{flex-direction:column;gap:8px;padding:22px 0}summary strong{font-size:13px}.oc summary,.method summary{padding:18px}.details-body{padding:18px}.toast{width:calc(100% - 40px);text-align:center}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}@media print{.topbar,aside,.question-tabs,.download,button,footer{display:none!important}main{padding:0}.workspace{display:block}.results{display:block}.panel{break-inside:avoid;margin-bottom:15px}.result-strip{color:#18333c;background:white}.result-strip>strong{color:#267263}.question-card{background:white}.tooltip{display:none!important}}
