:root{--blue:#0047ab;--orange:#ff7700;--ink:#19273b;--muted:#677384;--line:#dde4ed;--paper:#f6f8fc;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}a{color:var(--blue);text-underline-offset:4px}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,a,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}[hidden]{display:none!important}.header{max-width:1240px;margin:auto;padding:28px 36px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);gap:30px}.brand{font-size:21px;letter-spacing:-.8px;font-weight:760;text-decoration:none;color:var(--ink);white-space:nowrap}.brand-tail{color:var(--blue)}.brand-icon{display:inline-grid;place-items:center;background:var(--blue);color:white;border-radius:9px;width:31px;height:31px;margin-right:9px;font-size:27px}nav{display:flex;gap:27px;flex-wrap:wrap}nav a{font-size:13px;text-decoration:none;color:var(--muted);padding:10px 0}nav a[aria-current]{color:var(--blue);box-shadow:0 2px var(--blue)}main{max-width:1168px;margin:auto;padding:54px 0 60px}.intro{margin-bottom:35px}.eyebrow{font-size:11px;font-weight:750;letter-spacing:1.8px;color:var(--blue);margin:0 0 20px}.eyebrow span{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--orange);margin-right:8px}h1{font-size:clamp(38px,5vw,58px);line-height:1.08;letter-spacing:-2.6px;margin:0 0 18px;font-weight:700}.intro>p:last-child{font-size:16px;line-height:1.7;color:var(--muted)}.orange{color:var(--orange)}.workspace{display:grid;grid-template-columns:1.2fr 1fr;background:white;border:1px solid var(--line);border-radius:16px;box-shadow:0 10px 35px #19315106;overflow:hidden}.tool-panel,.activity{padding:29px}.activity{border-left:1px solid var(--line);background:#fbfcfe}.panel-title{display:flex;align-items:center;gap:10px;margin-bottom:28px}.panel-title h2{font-size:15px;margin:0;font-weight:650}.step{font-size:10px;font-weight:700;border:1px solid var(--line);padding:5px;border-radius:5px;color:var(--muted)}.badge,.activity-state{margin-left:auto;font-size:10px;color:var(--blue);background:#edf4ff;padding:6px 8px;border-radius:5px;white-space:nowrap}fieldset{border:0;padding:0;margin:0;min-width:0}label,.field-label{font-size:12px;font-weight:650}#website{display:block;width:100%;margin-top:10px;background:#fcfdff;border:1px solid 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24px;background:#e6edf7}progress::-webkit-progress-bar{background:#e6edf7}progress::-webkit-progress-value{background:var(--blue)}progress::-moz-progress-bar{background:var(--blue)}.feed-label{font-size:9px;letter-spacing:1.4px;font-weight:700;color:var(--muted)}.feed{margin:12px 0 0;padding:12px;list-style:none;min-height:115px;height:115px;overflow:auto;border:1px solid var(--line);background:#f5f7fa;border-radius:6px;font:10px/1.9 ui-monospace,monospace;color:var(--muted)}.feed li{overflow-wrap:anywhere;border-bottom:1px solid #e6ebf3;padding:4px 0}.feed .empty{border:0;padding:17px 3px}.empty span{color:#8793a4}.activity-note{font-size:10px;line-height:1.7;color:var(--muted);margin:17px 0 0}.notes{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;margin-top:40px}.notes span{font:10px ui-monospace,monospace;letter-spacing:1px;color:var(--blue)}.notes h3{font-size:13px;margin:13px 0 8px}.notes p{font-size:12px;color:var(--muted);line-height:1.8;margin:0}details{margin-top:30px;border-top:1px solid var(--line);padding-top:20px;color:var(--muted);font-size:12px;line-height:1.8}summary{cursor:pointer;color:var(--ink)}footer{max-width:1240px;margin:auto;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;padding:25px 36px;font-size:10px;color:var(--muted)}footer .brand{font-size:15px}footer>a:last-child{text-decoration:none;color:var(--muted)}.article{max-width:740px;margin:0 auto;min-height:60vh}.article h1{margin-bottom:40px}.article h2{font-size:20px;letter-spacing:-.5px;margin:30px 0 12px}.article p,.article li{font-size:15px;line-height:1.9;color:#526075}.article li{margin-bottom:10px}.text-link{display:inline-block;margin-top:20px}.result{padding:18px;background:#f0f6ff;border:1px solid #bed1ec;border-radius:8px;margin:15px 0;font-size:13px}.result p{font-size:11px;color:var(--muted);line-height:1.6}.skip{position:absolute;top:-100px}.skip:focus{top:10px;left:10px;background:white;padding:15px;z-index:2}:focus-visible{outline:3px solid var(--orange);outline-offset:4px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:1240px){main{padding:45px 36px 55px}}@media(max-width:760px){.header{padding:20px;align-items:flex-start;flex-direction:column;gap:14px}nav{gap:21px}nav a{font-size:12px}main{padding:34px 20px}.workspace{grid-template-columns:1fr}.tool-panel,.activity{padding:22px}.activity{border-left:0;border-top:1px solid var(--line)}.notes{grid-template-columns:1fr;gap:25px}h1{letter-spacing:-1.8px}footer{padding:24px 20px;flex-wrap:wrap}.choices{grid-template-columns:1fr 1fr}.choice-symbol{display:none}.badge{font-size:9px}.panel-title{gap:8px}.panel-title h2{font-size:14px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
/* Shared footer: visible below every in-page route. */
.site-footer{display:block;padding-top:28px;padding-bottom:30px}.footer-top{display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-top p{margin:0;line-height:1.8}.site-footer a{color:var(--muted);text-decoration:none}.site-footer a:hover{color:var(--blue);text-decoration:underline}.site-footer .brand{color:var(--ink)}.footer-top p a{color:var(--blue)}.footer-bottom{display:grid;grid-template-columns:1fr auto;gap:36px;margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}.footer-bottom p{margin:0 0 12px;line-height:1.8;font-size:10px}.footer-bottom ul{list-style:none;display:flex;gap:8px 17px;flex-wrap:wrap;padding:0;margin:0;line-height:1.8}.footer-projects{max-width:690px}.footer-projects a{font-size:10px}.footer-social p{color:var(--blue);font-weight:650}.footer-social ul{gap:10px 16px}.footer-social a{white-space:nowrap;font-size:11px}@media(max-width:760px){.footer-top{align-items:flex-start;flex-direction:column;gap:12px}.footer-bottom{grid-template-columns:1fr;gap:22px}.footer-projects ul{gap:8px 14px}}