:root{--bg:#f5f5ef;--paper:#fff;--ink:#202b27;--muted:#6d7770;--line:#dfe3d9;--green:#225e4b;--green-light:#e9f0e8;--orange:#d56939;--radius:22px;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:var(--bg);min-width:320px}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}a{color:var(--green);text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #d99a4a;outline-offset:4px}button{border:0}h1,h2,h3,p{margin:0}button,input{border-radius:10px}button{transition:background .16s,transform .16s}button:not(:disabled):active{transform:translateY(1px)}.wrap{max-width:1160px;margin:auto;padding:0 32px}.site-header{height:92px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{display:flex;gap:11px;align-items:center;color:var(--ink);text-decoration:none}.brand img{width:34px;height:34px}.brand-name{font-weight:750;font-size:23px;letter-spacing:-1px}.brand-note{font-size:12px;color:var(--muted);padding-left:15px;margin-left:5px;border-left:1px solid #c8d0c7;letter-spacing:1px}.nav-meta{display:flex;gap:24px;font-size:12px;color:var(--muted);align-items:center}.live-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--green);margin-right:7px}.hero{display:block;padding:32px 0 30px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:2.2px;color:var(--green);display:flex;align-items:center;gap:10px;margin-bottom:22px}.eyebrow::before{content:"";width:22px;height:1px;background:currentColor}.hero h1{font-size:30px;line-height:1.4;letter-spacing:0;font-weight:650}.hero-copy>p{font-size:14px;line-height:1.95;color:var(--muted);max-width:620px;margin-top:14px}.hero-tags{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}.tag{font-size:11px;color:#526459;border:1px solid #d6ded2;border-radius:30px;padding:7px 12px;display:inline-flex;align-items:center;gap:6px}.landing-bottom{display:grid;grid-template-columns:1.1fr .9fr;gap:45px;padding-bottom:40px}.section-label{font-size:11px;letter-spacing:1.7px;color:var(--muted);margin-bottom:22px}.journey{border-top:1px solid var(--line)}.journey-item{display:flex;align-items:center;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}.step-icon{height:41px;width:41px;background:#e7ece2;border-radius:12px;display:grid;place-items:center;flex-shrink:0}.step-icon svg{width:22px;height:22px;stroke:var(--green);fill:none;stroke-width:1.5}.journey-item h3{font-size:14px;font-weight:600;margin-bottom:6px}.journey-item p{font-size:12px;color:var(--muted);line-height:1.6}.step-time{margin-left:auto;white-space:nowrap;font-size:11px;color:var(--muted)}.quiet-note{font-size:11px;line-height:1.85;color:var(--muted);margin-top:17px}.entry-card{background:white;border:1px solid #e1e5dd;border-radius:var(--radius);padding:27px 29px;box-shadow:0 6px 30px #203e2404}.entry-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.entry-top h2{font-size:19px;font-weight:650}.small-pill{background:var(--green-light);color:var(--green);padding:5px 9px;font-size:10px;border-radius:20px}.field-label{font-size:12px;display:block;margin-bottom:9px;font-weight:600}.text-input{width:100%;border:1px solid #d8ded5;padding:13px 14px;background:#fafbf7;color:var(--ink);font-size:14px}.text-input::placeholder{color:#9aa096}.field-help{font-size:11px;color:var(--muted);line-height:1.6;margin-top:7px}.consent{display:flex;gap:9px;align-items:flex-start;font-size:11px;line-height:1.8;color:#6a746c;margin:17px 0}.consent input{accent-color:var(--green);margin:3px 0 0;flex-shrink:0;width:15px;height:15px}.primary{background:var(--green);color:#fff;font-weight:550;padding:14px 23px;display:inline-flex;gap:18px;align-items:center;justify-content:center;font-size:13px}.primary:hover:not(:disabled){background:#194c3c}.primary.wide{width:100%;justify-content:space-between}.secondary{background:white;color:var(--ink);border:1px solid #d6ddd2;padding:12px 20px;font-size:13px}.secondary:hover:not(:disabled){background:#f0f3eb}.text-button{background:none;color:var(--muted);font-size:12px;padding:8px 0;text-decoration:underline;text-underline-offset:4px}.entry-foot{margin-top:13px;text-align:center;font-size:10px;color:var(--muted)}.form-error{color:#ad422d;font-size:12px;line-height:1.7;margin:9px 0}.notice{border:1px solid #e6c698;border-radius:11px;background:#fff6e7;color:#815728;font-size:12px;line-height:1.8;padding:13px 16px;margin:14px 0}.notice.success{background:#ebf3ea;color:var(--green);border-color:#c7d9c2}.footer{border-top:1px solid var(--line);padding:22px 0 25px;display:flex;justify-content:space-between;color:#8a9389;font-size:10px;letter-spacing:.3px}.footer a{color:#788375}.device-status{font-size:11px;color:var(--green);margin:10px 0}.mode-banner{background:#fff0d8;padding:9px 15px;text-align:center;font-size:12px;color:#895426}.experiment-header{height:76px}.experiment-header .nav-meta{gap:18px}.sync-indicator{font-size:11px;color:var(--muted);white-space:nowrap}.sync-indicator.error{color:#a5522d}.progress-shell{padding:26px 0 20px}.progress-top{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--muted);margin-bottom:12px}.progress-track{height:4px;border-radius:20px;background:#dfe5d9;overflow:hidden}.progress-fill{height:100%;background:var(--green);transition:width .25s;border-radius:20px}.stage-tracker{display:flex;gap:26px;align-items:center;margin-top:14px;color:#9ba398;font-size:11px}.stage-tracker .active{color:var(--green);font-weight:650}.stage-tracker .complete{color:#677b68}.experiment{max-width:920px;margin:0 auto;padding:0 0 35px}.task-heading{text-align:center;padding:19px 0 22px}.task-kicker{font-size:10px;color:var(--green);letter-spacing:1.6px;text-transform:uppercase;margin-bottom:10px}.task-heading h1{font-size:27px;font-weight:620;letter-spacing:-.5px;margin-bottom:10px}.task-heading p{font-size:13px;color:var(--muted);line-height:1.8}.task-surface{background:#eceee8;border:1px solid #dce2d6;border-radius:22px;padding:24px 35px;position:relative;min-height:294px}.trial-topline{display:flex;justify-content:space-between;align-items:center;font-size:10px;color:#788275;margin-bottom:22px}.stimulus-pair{display:flex;justify-content:center;gap:90px}.stimulus-column{width:240px;flex-shrink:0;text-align:center}.stimulus-label{font-size:11px;color:#697366;margin-bottom:16px;height:16px}.stimulus-label strong{font-weight:600;color:var(--green)}.stimulus-column canvas{display:block;width:240px;height:180px}.sample-caption{font-size:10px;color:#87907f;margin-top:12px}.choices{display:flex;justify-content:center;gap:20px;margin-top:24px}.choice{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;width:240px;background:#fff;border:1px solid #ced8c8;font-size:13px;color:var(--ink)}.choice:hover:not(:disabled){border-color:var(--green);background:#f3f7ef}.keycap{font-size:11px;border:1px solid #e0e5da;padding:3px 7px;border-radius:5px;color:#8a9586}.task-hint{font-size:11px;text-align:center;color:var(--muted);line-height:1.8;margin-top:17px}.controls-area{max-width:530px;margin:23px auto 0}.slider-labels{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin:10px 0 5px}input[type=range]{width:100%;accent-color:var(--green);cursor:ew-resize;height:27px}.adjust-buttons{display:flex;justify-content:center;gap:12px;margin:8px 0 17px}.adjust-buttons button{padding:7px 13px;font-size:11px;background:#e5ecde;color:var(--green)}.rating-row{display:flex;justify-content:center;gap:12px;align-items:center}.rating-row input{width:190px;background:#fff;padding:13px 17px;border:1px solid #cdd6c6;font-size:22px;text-align:center;font-variant-numeric:tabular-nums}.reference-examples{display:flex;justify-content:center;gap:22px;font-size:11px;color:var(--muted);margin-top:14px}.reference-examples b{font-weight:550;color:#6a7d67}.practice-feedback{margin:18px auto 0;max-width:530px;padding:16px 20px;border-radius:12px;background:var(--green-light);font-size:12px;line-height:1.8;display:flex;align-items:center;justify-content:space-between;gap:18px}.instruction-card{background:#fff;border:1px solid var(--line);border-radius:24px;max-width:740px;margin:32px auto 20px;padding:38px 48px}.instruction-card h1{font-size:28px;font-weight:620;line-height:1.5;margin-bottom:14px}.instruction-card .lead{font-size:14px;line-height:1.9;color:var(--muted)}.instruction-list{padding:0;list-style:none;margin:27px 0}.instruction-list li{display:flex;gap:13px;margin:18px 0;align-items:flex-start;font-size:13px;line-height:1.8}.list-number{border-radius:50%;background:#ecf1e7;color:var(--green);width:24px;height:24px;display:grid;place-items:center;flex-shrink:0;font-size:11px}.instruction-actions{display:flex;gap:13px;align-items:center;margin-top:26px}.break-icon{width:58px;height:58px;display:grid;place-items:center;border-radius:18px;background:#e8eee1;color:var(--green);font-size:27px;margin-bottom:24px}.completion-card{text-align:center;padding:46px 50px}.completion-card .break-icon{margin:0 auto 22px}.receipt-box{display:inline-flex;gap:35px;padding:19px 26px;background:#f5f7f0;border-radius:13px;margin-top:25px;text-align:left}.receipt-box span{display:block;color:var(--muted);font-size:10px;margin-bottom:7px}.receipt-box strong{font-size:15px;font-weight:550;letter-spacing:1px}.completion-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}.overlay{position:fixed;inset:0;background:#1d2925aa;backdrop-filter:blur(5px);z-index:30;display:grid;place-items:center;padding:25px}.modal{background:var(--bg);border-radius:22px;padding:34px;max-width:470px;width:100%}.modal h2{font-size:23px;font-weight:600;margin-bottom:13px}.modal p{font-size:13px;line-height:1.9;color:var(--muted);margin-bottom:22px}.modal-actions{display:flex;gap:10px;flex-wrap:wrap}.device-block{margin:20px auto}.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#263b2d;color:white;padding:12px 20px;border-radius:10px;font-size:12px;z-index:80;display:none;box-shadow:0 6px 22px #0002}#toast.show{display:block}.intertrial .stimulus-pair{visibility:hidden}.dashboard{padding:38px 0 55px}.dashboard-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:26px}.dashboard h1{font-size:30px;letter-spacing:-.5px}.dashboard .sub{font-size:12px;color:var(--muted);margin-top:10px}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px;margin:28px 0}.stat-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:23px}.stat-card .stat-label{font-size:11px;color:var(--muted)}.stat-card strong{display:block;font-size:32px;font-weight:550;margin:12px 0 5px}.stat-card small{color:var(--muted);font-size:10px}.admin-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:20px 0}.admin-toolbar select{border:1px solid #d5ddce;background:#fff;padding:10px 13px;font-size:12px;border-radius:9px}.admin-toolbar .spacer{flex:1}.table-shell{background:white;border:1px solid var(--line);border-radius:16px;overflow:auto}table{border-collapse:collapse;width:100%;text-align:left;white-space:nowrap}th{font-size:10px;font-weight:550;color:#818b7c;background:#fafbf6}th,td{padding:16px 20px;border-bottom:1px solid #eef0e9}td{font-size:12px}tr:last-child td{border:0}.status-pill{font-size:10px;padding:5px 9px;border-radius:20px;background:#e9f2e5;color:#386f3d}.status-pill.pending{background:#fbf0df;color:#a97629}.empty-state{text-align:center;padding:66px 20px;color:var(--muted);font-size:13px;line-height:1.9}.empty-state strong{display:block;font-size:17px;color:var(--ink);font-weight:550;margin-bottom:8px}.admin-login{max-width:420px;margin:80px auto}.admin-login h1{font-size:25px;margin-bottom:12px}.admin-login p{font-size:12px;color:var(--muted);line-height:1.8;margin-bottom:25px}.link-row{display:flex;gap:15px;align-items:center;flex-wrap:wrap}.link-row a{font-size:12px}.trial-fast{font-variant-numeric:tabular-nums}.exit-panel{margin-top:15px;text-align:center}
@media(min-width:1500px){.wrap{max-width:1220px}.hero{padding-top:38px;padding-bottom:32px}}
@media(max-width:950px){.wrap{padding:0 24px}.hero,.landing-bottom{gap:28px}.hero h1{font-size:30px}.brand-note{display:none}.stimulus-pair{gap:65px}.entry-card{padding:23px}.stats-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.wrap{padding:0 20px}.site-header{height:73px}.nav-meta{gap:12px}.nav-meta .desktop-detail{display:none}.hero{padding:28px 0 24px}.hero h1{font-size:30px}.landing-bottom{display:flex;flex-direction:column-reverse;gap:28px}.footer{line-height:1.8;gap:15px}.footer span{max-width:65%}.instruction-card{padding:28px 24px;margin:20px 0}.instruction-card h1{font-size:24px}.dashboard-head{align-items:flex-start;flex-direction:column}.stats-grid{gap:10px}.stat-card{padding:17px}.brand-name{font-size:21px}.stage-tracker{gap:15px}.receipt-box{gap:20px}.admin-toolbar .spacer{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}