:root{color-scheme:dark;--bg:#111614;--panel:#1a211d;--ink:#f0f3e9;--muted:#aebbb0;--line:#3b493f;--accent:#d6fc72}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 Arial,Helvetica,sans-serif}a{color:inherit;text-underline-offset:5px}a:hover{color:var(--accent)}header,main,footer{max-width:1320px;margin:auto}header{padding:30px 52px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.wordmark{font-size:14px;font-weight:800;line-height:1.2;letter-spacing:.08em;text-decoration:none;position:relative}.dot{color:var(--accent);padding-left:12px}nav{display:flex;gap:32px;font-size:14px}nav a{text-decoration:none}.opening{padding:70px 52px 55px}.eyebrow,.section-label{font:12px/1.5 ui-monospace,Consolas,monospace;letter-spacing:.1em}.signal{display:inline-block;background:var(--accent);width:7px;height:7px;border-radius:50%;margin-right:10px}h1{font-size:clamp(48px,6.8vw,91px);line-height:1.03;font-weight:400;letter-spacing:-.055em;margin:36px 0}h1 em{font-family:Georgia,serif;font-weight:400;color:var(--accent);letter-spacing:-.045em}.intro{display:grid;grid-template-columns:1fr 1fr;gap:65px;max-width:960px}.intro p:first-child{font-size:23px;line-height:1.45;max-width:360px}.intro p{margin:0}.muted,.note{color:var(--muted)}.text-link{display:inline-flex;gap:38px;align-items:center;margin-top:28px;font-size:14px}.opening>.text-link{color:var(--accent)}.experiment{margin:0 52px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:32px 0;display:grid;grid-template-columns:1fr 2fr;gap:30px}.section-label{color:var(--accent)}h2{font-size:32px;font-weight:400;letter-spacing:-.035em;line-height:1.2;margin:0 0 20px}.experiment h2{max-width:600px}.experiment p{max-width:660px}.note{font-size:14px;line-height:1.55}.participate{padding:75px 52px;display:grid;grid-template-columns:1fr 1.3fr;gap:75px;scroll-margin-top:24px}.form-heading h2{font-size:48px;margin-top:24px}.form-heading p{max-width:320px;color:var(--muted)}.form-panel{background:var(--panel);border:1px solid var(--line);padding:30px}label{display:block;font-size:14px;margin:0 0 9px}input,select,textarea,button{font:inherit}input,select,textarea{width:100%;background:var(--bg);color:var(--ink);border:1px solid #5c6a5f;border-radius:3px;padding:12px;min-width:0}textarea{resize:vertical}input:focus,select:focus,textarea:focus,button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px}input::placeholder,textarea::placeholder{color:#93a094}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:22px 0}.optional{color:var(--muted);font-size:12px;margin-left:8px}details{margin:24px 0}summary{cursor:pointer;font-size:14px}details[open] summary{margin-bottom:16px}.check{display:flex;gap:12px;margin-top:25px;align-items:flex-start;color:var(--muted)}.check input{width:18px;height:18px;flex:none;margin-top:3px;accent-color:var(--accent)}button{display:flex;justify-content:space-between;width:100%;padding:14px 20px;background:var(--accent);color:#142013;border:0;border-radius:3px;font-weight:700;cursor:pointer}button:hover{background:#e5ff9f}button:disabled{opacity:.6;cursor:wait}#form-status{margin-bottom:0;font-size:14px}#receipt-panel h2{margin-top:24px}#receipt{font-family:monospace;font-size:14px;margin-bottom:12px}.about{margin:0 52px;padding:45px 0 65px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1.3fr;gap:75px}.about h2{margin-top:20px}.about>p{color:var(--muted);margin-top:0}footer{padding:30px 52px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:25px;font-size:12px}footer p{margin:0}footer span{color:var(--muted)}footer div{display:flex;flex-direction:column;gap:8px;font-size:14px}.document{max-width:850px;padding:60px 40px}.document h1{font-size:52px}.document h2{margin-top:36px;font-size:26px}.document p,.document li{color:var(--muted)}.document form{margin-top:25px}.document input{margin-bottom:15px}.admin-main{padding:40px 52px}.admin-main h1{font-size:48px}.admin-message{border:1px solid var(--line);padding:24px;margin:20px 0}.admin-message pre{white-space:pre-wrap;overflow-wrap:anywhere;font:16px/1.6 Arial,sans-serif}.admin-message .note{overflow-wrap:anywhere}.admin-controls{max-width:600px}.admin-controls input{margin-bottom:15px}.admin-controls button{margin-bottom:12px}[hidden]{display:none!important}@media(max-width:760px){header{padding:22px 24px}nav{gap:16px;font-size:14px}.opening{padding:45px 24px}.intro{grid-template-columns:1fr;gap:20px}.intro p:first-child{max-width:none}.experiment{margin:0 24px;grid-template-columns:1fr;gap:20px}.participate{padding:45px 24px;grid-template-columns:1fr;gap:30px}.form-heading h2{font-size:38px}.form-heading p{max-width:none}.form-panel{padding:22px}.field-row{grid-template-columns:1fr}.about{margin:0 24px;grid-template-columns:1fr;gap:15px}footer{padding:25px 24px;flex-wrap:wrap}.document,.admin-main{padding:30px 24px}.document h1{font-size:40px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}