.model-explorer{--model-navy:#102e47;--model-teal:#007c86;--model-orange:#ec7a15;--model-line:#dce5e8;color:var(--model-navy)}
.model-explorer [hidden]{display:none!important}
.model-choices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 0 28px}
.model-explorer button{font:inherit;cursor:pointer}
.model-choice{display:flex;align-items:center;gap:14px;min-height:76px;padding:16px 20px;border:1px solid var(--model-line);border-radius:12px;background:#fff;text-align:left;color:var(--model-navy);font-weight:700!important;transition:background .18s,border-color .18s,transform .18s}
.model-choice-number{font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--model-teal)}
.model-choice[aria-selected=true]{background:var(--model-navy);border-color:var(--model-navy);color:#fff;box-shadow:inset 0 -3px var(--model-orange)}
.model-choice[aria-selected=true] .model-choice-number{color:#8bddc6}
.model-choice:hover{transform:translateY(-2px)}
.model-panel{border:1px solid var(--model-line);border-radius:18px;overflow:hidden;background:#fff;margin-bottom:24px;scroll-margin-top:110px}
.model-panel-heading{display:grid;grid-template-columns:1fr 1.2fr;align-items:start;gap:28px;padding:28px 30px;border-bottom:1px solid var(--model-line);background:#f5f8f8}
.model-panel-heading h3{margin:0;font-size:clamp(22px,2.1vw,29px);line-height:1.2;letter-spacing:-.025em}
.model-panel-heading p{margin:0;font-size:15px;line-height:1.6;color:#4c606c}
.model-workspace{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);align-items:start}
.model-figure{margin:0;padding:24px 18px;position:sticky;top:100px}
.model-image-map{position:relative;width:100%}
.model-image-map img{display:block;width:100%;height:auto;object-fit:contain}
.model-hotspots{position:absolute;inset:0;pointer-events:none}
.model-hotspot{position:absolute;transform:translate(-50%,-50%);min-width:44px;min-height:44px;border:2px solid rgba(0,124,134,.35);border-radius:50%;background:transparent;pointer-events:auto;padding:0;transition:box-shadow .15s,border-color .15s}
.model-hotspot span{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.model-hotspot[aria-pressed=true]{border:3px solid var(--model-orange);box-shadow:0 0 0 4px #fff9,0 0 0 6px #ec7a1540}
.model-hotspot:hover{border-color:var(--model-orange);box-shadow:0 0 0 4px #ec7a1530}
.model-panel-cycles .model-hotspot{border-radius:9px;min-height:0}
.model-expand{display:flex;width:100%;justify-content:space-between;align-items:center;padding:14px 12px;min-height:48px;font-size:13px;font-weight:700;border:0;border-top:1px solid #edf1f3;background:#fff;color:var(--model-navy)}
.model-expand:hover{color:var(--model-teal);background:#f4faf8}
.model-explanation{padding:24px;border-left:1px solid var(--model-line)}
.model-instruction{margin:0 0 12px;font-size:12px;text-transform:uppercase;letter-spacing:.08em;font-weight:800;color:var(--model-teal)}
.model-stages{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:22px}
.model-stage{min-height:44px;display:flex;align-items:center;gap:7px;padding:9px 11px;border:1px solid #d7e2e5;border-radius:8px;background:#fff;color:var(--model-navy);font-size:13px!important;font-weight:700!important;line-height:1.25;transition:background .15s,border-color .15s}
.model-stage>span{font-size:10px;opacity:.65;font-variant-numeric:tabular-nums}
.model-stage:hover{border-color:var(--model-teal);background:#f3faf8}
.model-stage[aria-selected=true]{background:var(--model-teal);border-color:var(--model-teal);color:white}
.model-details{position:relative;padding-top:20px;border-top:3px solid #e9efed}
.model-details:before{content:"";position:absolute;top:-3px;left:0;width:var(--model-progress,12.5%);height:3px;background:var(--model-orange);transition:width .25s ease}
.model-step-count{font-size:11px;letter-spacing:.12em;font-weight:800;color:var(--model-teal);margin:0 0 8px}
.model-step-panel h4{font-size:27px;letter-spacing:-.03em;line-height:1.15;margin:0 0 10px;color:var(--model-navy)}
.model-meaning{font-size:18px;line-height:1.4;margin:0 0 22px;color:var(--model-navy);max-width:34ch}
.model-step-panel dl{margin:0;display:grid;gap:18px}
.model-step-panel dt{font-size:11px;text-transform:uppercase;letter-spacing:.08em;font-weight:800;color:var(--model-teal);margin-bottom:5px}
.model-step-panel dd{margin:0;font-size:15px;line-height:1.6;color:#415965}
.model-question{margin-top:22px;padding:17px;border:1px solid #d8e9e4;border-radius:10px;background:#f3faf7}
.model-question>p{font-size:14px;line-height:1.5;margin:0 0 10px}
.model-question .model-question-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;font-weight:800;color:var(--model-teal)}
.model-question summary{display:flex;align-items:center;gap:10px;min-height:44px;cursor:pointer;font-size:13px;font-weight:700;color:var(--model-teal);list-style:none}
.model-question summary:before{content:"+";font-size:20px}
.model-question details[open] summary:before{content:"−"}
.model-question details p{font-size:14px;line-height:1.6;margin:8px 0 0;color:#415965}
.model-question summary:focus-visible{outline:3px solid var(--model-orange);outline-offset:3px}
.model-step-nav{display:none;justify-content:space-between;gap:16px;margin-top:24px;border-top:1px solid #e7eded;padding-top:12px}
.model-explorer[data-model-ready] .model-step-nav{display:flex}
.model-step-nav button{min-height:44px;border:0;background:transparent;color:var(--model-navy);font-size:13px;font-weight:700;padding:8px 0}
.model-step-nav button:hover{color:var(--model-teal)}
.model-footnote{font-size:13px;line-height:1.6;color:#586a73;max-width:90ch;margin:18px 0 0}
.model-explorer button:focus-visible,.model-explorer [role=tabpanel]:focus-visible{outline:3px solid var(--model-orange);outline-offset:4px}
.model-explorer:not([data-model-ready]) .model-step-panel{margin-bottom:24px}
@media(min-width:1100px){.model-explorer[data-model-ready] .model-details{min-height:275px}}
@media(max-width:1000px){.model-workspace{grid-template-columns:1fr}.model-figure{position:static;padding:18px;max-width:850px;margin:auto}.model-explanation{border-left:0;border-top:1px solid var(--model-line)}.model-panel-heading{grid-template-columns:1fr;gap:12px}.model-choice{padding:14px;gap:10px;font-size:14px}.model-meaning{max-width:none}}
@media(max-width:900px){.model-hotspots{display:none}}
@media(max-width:600px){.model-hotspots{display:none}.model-choices{grid-template-columns:1fr;gap:8px}.model-choice{min-height:55px;padding:12px 16px}.model-panel-heading{padding:22px 18px}.model-panel-heading p{font-size:14px}.model-explanation{padding:20px 18px}.model-figure{padding:8px}.model-stage{flex:1 0 auto;justify-content:center;min-height:46px}.model-panel{border-radius:12px}.model-step-panel dd{font-size:15px}.model-step-panel h4{font-size:25px}}
@media(prefers-reduced-motion:reduce){.model-explorer *{transition:none!important;animation:none!important}.model-choice:hover{transform:none}}