*{box-sizing:border-box}html{scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:var(--accent);text-underline-offset:4px}button,a{touch-action:manipulation}button{font:inherit;cursor:pointer;color:var(--ink);border:1px solid var(--line);border-radius:12px;padding:11px 18px;min-height:46px;background:var(--panel)}button:hover{border-color:var(--accent)}button:disabled{opacity:.45;cursor:default}button,a,h1,h2,h3,p,li{overflow-wrap:anywhere}.skip{position:absolute;top:-100px;left:16px;padding:12px;background:var(--panel);z-index:5}.skip:focus{top:12px}.notice{padding:9px 24px;border-bottom:1px solid var(--line);color:var(--muted);font-size:12px;text-align:center;background:var(--panel)}header,main,footer{max-width:1240px;margin:auto;padding:24px 36px}header{display:flex;justify-content:space-between;gap:20px;align-items:center;border-bottom:1px solid var(--line)}.wordmark{font-size:27px;font-weight:780;color:var(--ink);text-decoration:none;letter-spacing:-1px}.wordmark span{display:block;font-size:12px;letter-spacing:0;font-weight:450;color:var(--muted)}.header-controls{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}#languages{display:flex;gap:4px;padding:4px;border:1px solid var(--line);border-radius:13px;background:var(--panel)}#languages button{font-size:13px;padding:8px 11px;border:0;min-width:42px;min-height:40px;background:transparent}#languages button[aria-pressed=true]{background:var(--soft-accent);color:var(--accent);font-weight:750}.intro{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:clamp(28px,5vw,70px);align-items:center;padding:28px 0 46px}.intro-copy{min-width:0}.eyebrow{color:var(--accent);font-size:12px;letter-spacing:1.7px;font-weight:750;margin:0 0 16px}h1{font-size:clamp(34px,4.3vw,57px);line-height:1.12;letter-spacing:-1.8px;margin:0 0 22px;max-width:16ch;text-wrap:balance}h2{font-size:clamp(25px,2.5vw,33px);line-height:1.25;letter-spacing:-.6px;margin:0 0 12px}h3{font-size:23px;line-height:1.3;margin:16px 0 12px;letter-spacing:-.4px}p{margin:10px 0;color:var(--muted)}#lede{font-size:16px;max-width:60ch}.principle{border-left:3px solid var(--accent);padding:8px 0 8px 16px;color:var(--ink);font-size:15px;margin:22px 0}.primary{background:var(--accent);color:var(--on-accent);border-color:var(--accent);font-weight:650}.model{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:26px;box-shadow:var(--shadow)}.model ol{list-style:none;margin:22px 0;padding:0;display:grid;gap:12px;counter-reset:model}.model li{counter-increment:model;display:grid;grid-template-columns:34px 1fr;gap:14px;align-items:center;background:var(--panel2);border:1px solid var(--line);padding:15px;border-radius:13px;color:var(--ink);font-size:15px;font-weight:600}.model li:before{content:"0" counter(model);font-size:13px;color:var(--accent);font-variant-numeric:tabular-nums}.tabs{display:flex;gap:7px;background:var(--panel2);padding:6px;border:1px solid var(--line);border-radius:16px}.tabs button{flex:1;border-color:transparent;background:transparent;font-size:15px}.tabs button[aria-selected=true]{background:var(--panel);border-color:var(--line);color:var(--accent);font-weight:750;box-shadow:var(--shadow)}#panel{padding:34px 0;scroll-margin-top:24px;min-height:420px}.section-head{max-width:850px;margin-bottom:24px}.section-head p{font-size:15px;max-width:80ch}.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.card{border:1px solid var(--line);background:var(--panel);border-radius:18px;padding:26px;min-width:0;box-shadow:var(--shadow)}.evidence-card{display:flex;flex-direction:column;border-top:3px solid var(--accent)}.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.card-index{font-size:13px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums}.card p{font-size:15px}.card .why{border-top:1px solid var(--line);padding-top:14px;color:var(--ink);font-size:14px}.badge{display:inline-block;align-self:flex-start;border-radius:7px;background:var(--soft-accent);padding:5px 9px;color:var(--accent);font-size:12px;line-height:1.5;font-weight:600}.badge.idea{color:var(--gold);background:var(--notice-bg)}.card a{display:inline-flex;align-items:center;min-height:44px;margin-top:auto;padding-top:12px;font-size:14px;font-weight:650}.source-caption{font-size:12px!important;color:var(--muted);margin-top:14px}.path{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:24px 0}.path button{text-align:left;font-size:14px;min-height:92px;padding:14px}.path button[aria-current=step]{border-color:var(--accent);background:var(--soft-accent);box-shadow:inset 0 3px var(--accent)}.number{display:block;color:var(--accent);font-weight:750;font-size:12px;margin-bottom:8px}.case{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:24px}.visual{background:var(--panel2);border-radius:18px;padding:26px;border:1px solid var(--line);display:flex;flex-direction:column;justify-content:center;min-width:0;min-height:275px}.field{min-height:190px;border:2px dashed var(--ok);border-radius:35% 18% 30% 15%;display:grid;place-content:center;text-align:center;background:var(--ok-bg);margin:12px 20px}.field strong{font-size:42px;line-height:1.2;font-variant-numeric:tabular-nums;color:var(--ok)}.field span{font-size:15px;color:var(--ok)}.field-label{color:var(--gold);font-size:13px;font-weight:650;margin:0;text-align:center}.metric{display:flex;justify-content:space-between;gap:18px;align-items:baseline;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}.metric strong{text-align:right;color:var(--ink);max-width:60%}.status{border-radius:12px;padding:15px 18px;background:var(--notice-bg);border:1px solid var(--gold);color:var(--gold);font-weight:650;margin:18px 0;font-size:15px}.status.fail{background:var(--bad-bg);border-color:var(--bad);color:var(--bad)}.status.unknown{background:var(--soft-accent);border-color:var(--accent);color:var(--accent)}.status.good{background:var(--ok-bg);border-color:var(--ok);color:var(--ok)}.action-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.action-row button[aria-pressed=true]{background:var(--soft-accent);border-color:var(--accent);color:var(--accent)}.step-controls{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:24px}.caption{font-size:13px!important;line-height:1.55}.human{border:1px solid var(--gold);background:var(--notice-bg);border-radius:16px;text-align:center;padding:26px;font-size:24px;font-weight:700;color:var(--gold)}.human small{display:block;font-size:14px;font-weight:400;margin-top:12px;color:var(--muted)}.boundary{border-top:1px solid var(--line);padding:26px 0}.boundary strong{color:var(--ink);font-size:15px}.boundary p{font-size:13px;max-width:1000px}.boundary a{font-size:13px}footer{border-top:1px solid var(--line);font-size:13px;color:var(--muted);overflow-wrap:anywhere}footer p{font-size:12px}.goal-list{display:grid;gap:14px;padding:0;list-style:none;counter-reset:goals}.goal-list li{counter-increment:goals;padding:22px;border:1px solid var(--line);border-radius:14px;background:var(--panel);display:grid;grid-template-columns:32px 1fr;gap:16px}.goal-list li:before{content:"0" counter(goals);color:var(--accent);font-weight:700}.result{font-size:21px;color:var(--ink);max-width:800px;margin-top:28px}.nav-note{font-size:13px;color:var(--muted);text-align:center;flex-shrink:0}code{font-size:12px;overflow-wrap:anywhere}
@media(max-width:850px){.intro{grid-template-columns:1fr;gap:25px}h1{max-width:22ch}.model{padding:20px}.model ol{grid-template-columns:repeat(3,minmax(0,1fr));margin:16px 0}.model li{display:block;padding:12px}.model li:before{display:block;margin-bottom:6px}.path{grid-template-columns:repeat(3,minmax(0,1fr))}.path button{min-height:84px}}
@media(max-width:600px){header,main,footer{padding:20px}header{flex-wrap:wrap;gap:16px}.header-controls{justify-content:space-between;gap:12px;width:100%}.intro{padding:16px 0 28px}.cards,.case{grid-template-columns:1fr}.model ol{grid-template-columns:1fr}.model li{display:grid;grid-template-columns:26px 1fr}.model li:before{margin:0}.tabs{gap:3px;padding:4px}.tabs button{font-size:13px;padding:10px 6px}.card,.visual{padding:20px}.path{grid-template-columns:repeat(2,minmax(0,1fr))}.path button:last-child{grid-column:1/-1;min-height:65px}.notice{font-size:11px;padding:8px 16px}.metric{align-items:flex-start}.action-row button{flex:1 1 130px}.step-controls{flex-wrap:wrap;gap:10px}.step-controls button{font-size:14px;padding:10px 12px}.nav-note{font-size:12px}.field{margin:12px 10px}.goal-list li{padding:18px}h1{letter-spacing:-1.1px}}
@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}button,a{transition:background-color .16s,color .16s,border-color .16s}}
@media print{header .header-controls,.tabs,.action-row,.step-controls,#start{display:none}:root,:root[data-theme=dark]{--bg:#fff;--panel:#fff;--panel2:#fff;--ink:#111;--muted:#333;--accent:#17446a;--line:#bbb;--gold:#6c4800;--soft-accent:#fff;--shadow:none}header,main,footer{max-width:none}.card{break-inside:avoid}.intro{grid-template-columns:1fr}.model{display:none}}