:root{--bg:#f5f6f1;--paper:#fff;--ink:#243b38;--muted:#6a7975;--green:#214e45;--sage:#e7eee3;--line:#dbe2d8;--lime:#e7edbf;--red:#a24135;--shadow:0 8px 28px #203d3710;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",Arial,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:4px}button{cursor:pointer;border:1px solid var(--line);background:white;color:var(--ink);border-radius:10px;padding:10px 15px;line-height:1.2;font-weight:550}button:hover{background:#f0f4ee;border-color:#b4c3b5}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--green);color:white;border-color:var(--green)}button.primary:hover{background:#173e36}button.quiet{background:transparent;border-color:transparent}button.small{padding:7px 10px;font-size:12px;border-radius:8px}button.danger{color:var(--red)}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}input,select,textarea{border:1px solid #cfd8ce;border-radius:10px;background:white;padding:11px 13px;color:var(--ink);max-width:100%}input:focus,textarea:focus,select:focus{outline:2px solid #a6bda0;border-color:var(--green)}textarea{resize:vertical;line-height:1.6;width:100%;min-height:90px}label{font-size:13px;font-weight:600;display:grid;gap:8px}.muted{color:var(--muted)}.small-text{font-size:12px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--muted)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(30px,4vw,44px);letter-spacing:-.045em;line-height:1.12;font-weight:600;margin-bottom:15px}h2{font-size:22px;letter-spacing:-.025em;font-weight:600}h3{font-size:16px;font-weight:600}p{line-height:1.7}header{height:82px;padding:0 38px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;background:var(--bg);gap:15px}.brand{display:flex;align-items:center;gap:12px;white-space:nowrap}.brand-icon{width:38px;height:38px;background:var(--green);border-radius:11px;position:relative}.brand-icon:before,.brand-icon:after{content:"";position:absolute;width:15px;height:21px;border-radius:3px;top:7px;left:9px;background:#b9d3b6;transform:rotate(-13deg)}.brand-icon:after{background:#fff9e6;left:16px;top:11px;transform:rotate(12deg)}.brand-name{font-size:18px;font-weight:650;letter-spacing:-.04em}.brand-sub{font-size:11px;color:var(--muted);margin-top:3px;letter-spacing:.025em}.header-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.badge{font-size:12px;border:1px solid var(--line);border-radius:25px;padding:7px 12px;background:white;white-space:nowrap}.badge.dark{background:var(--green);color:white;border:0}.badge.sage{background:var(--sage)}.save-status{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:7px}.save-status:before{content:"";width:6px;height:6px;border-radius:50%;background:#6b9169}.save-status.pending:before{background:#b48b35}.page{max-width:1240px;margin:auto;padding:45px 38px 65px}.hero{display:flex;justify-content:space-between;align-items:flex-start;gap:36px;margin-bottom:30px}.hero p{max-width:650px;font-size:15px;color:var(--muted);margin:0}.hero .eyebrow{margin-bottom:13px}.hero-tools{display:flex;align-items:center;gap:9px;flex-wrap:wrap;padding-top:7px;justify-content:flex-end}.login-layout{max-width:1080px;margin:65px auto;display:grid;grid-template-columns:1.1fr 1fr;gap:80px;align-items:center;padding:0 35px}.login-copy h1{font-size:51px;max-width:460px}.login-copy p{color:var(--muted);max-width:400px}.login-art{height:170px;position:relative;margin-top:35px}.art-card{position:absolute;background:var(--lime);border:1px solid #c8d3aa;width:146px;height:145px;border-radius:17px;transform:rotate(-13deg);top:5px;left:12px;padding:22px;font-size:14px;box-shadow:var(--shadow)}.art-card:nth-child(2){background:#fffaf0;left:130px;top:20px;transform:rotate(10deg);border-color:#e6dfce}.art-card span{font-size:27px;display:block;margin-bottom:25px}.panel{border:1px solid var(--line);background:white;border-radius:18px;box-shadow:var(--shadow);padding:27px}.panel p{font-size:14px}.login-form{display:grid;gap:22px}.login-form h2{margin-bottom:2px}.login-form button{padding:13px}.inline-error{color:var(--red);font-size:13px;line-height:1.5;min-height:0}.intro-wrap{max-width:780px;margin:50px auto;padding:0 22px}.intro-card{padding:40px}.intro-card h1{font-size:38px;max-width:600px}.instruction-list{display:grid;gap:20px;margin:30px 0}.instruction{display:flex;gap:16px}.instruction .number{background:var(--sage);height:29px;min-width:29px;border-radius:50%;display:grid;place-items:center;font-size:12px}.instruction p{margin:0;font-size:14px;color:var(--muted)}.instruction strong{font-size:15px;display:block;margin-bottom:4px}.intro-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:22px;border-top:1px solid var(--line);gap:16px}.intro-bottom p{margin:0;font-size:12px;max-width:420px}.study-meta{display:flex;gap:18px;margin:22px 0;font-size:12px;color:var(--muted)}.board-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:25px;align-items:start}.bank-panel{background:#eaf0e5;border:1px solid #dce5d4;border-radius:16px;padding:19px;position:sticky;top:20px;max-height:calc(100vh - 45px);overflow:auto}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:15px}.section-heading h2,.section-heading h3{margin:0}.count{border-radius:20px;min-width:25px;height:25px;padding:0 7px;background:#fff9;font-size:12px;display:grid;place-items:center}.bank-help{font-size:12px;line-height:1.6;color:var(--muted);margin:0 0 16px}.drop-zone{min-height:110px;border:1px dashed transparent;border-radius:12px;padding:3px;transition:background .12s,border .12s}.drop-zone.drop-hot{background:#ecf3e4;border-color:#789a68}.card-stack{display:grid;gap:9px;align-content:start}.sort-card{border:1px solid #dce2d8;border-radius:10px;background:#fff;box-shadow:0 2px 4px #2a453705;min-height:68px;padding:11px 10px 9px;position:relative;transition:border-color .12s;user-select:none}.sort-card:hover{border-color:#b0bfa9}.sort-card.is-dragged{opacity:.28}.card-top{display:flex;gap:8px;align-items:flex-start}.drag-handle{border:0!important;background:transparent!important;padding:2px 3px;color:#8b9a86;font-size:17px;line-height:20px;touch-action:none;cursor:grab;min-width:23px}.drag-handle:active{cursor:grabbing}.card-label{font-size:13px;font-weight:550;line-height:1.45;flex:1;overflow-wrap:anywhere;padding-top:3px}.card-code{font-size:9px;color:#9ba599;font-weight:500;padding-top:4px}.custom-tag{font-size:9px;color:#65785c;display:block;margin-top:2px;font-weight:400}.card-tools{display:flex;align-items:center;gap:3px;justify-content:flex-end;margin-top:8px}.card-tools button{padding:3px 6px;font-size:11px;border:0;background:#f4f6f1;border-radius:5px}.card-tools select{padding:3px 5px;font-size:10px;max-width:132px;border-radius:5px;border-color:#e4e9de;min-width:76px}.rank-number{color:var(--green);font-size:12px;font-weight:650;min-width:18px;padding-top:4px}.canvas{min-height:400px}.groups-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.group{background:white;border:1px solid var(--line);border-radius:15px;padding:18px;align-self:start;min-width:0}.group-head{display:flex;gap:8px;align-items:flex-start;margin-bottom:12px}.group-title{flex:1;overflow-wrap:anywhere}.group-title h3{margin:0 0 4px;line-height:1.4}.group-title span{font-size:10px;color:var(--muted)}.group-actions{display:flex;gap:2px;flex-wrap:wrap;justify-content:flex-end;max-width:95px}.group-actions button{font-size:11px;padding:3px 6px;border:0;background:transparent}.group .drop-zone{background:#f8faf6;border-color:#e2e8dc;padding:8px;min-height:120px}.group .drop-zone.drop-hot{background:#eaf2e0;border-color:#789a68}.group-note{border:0;border-top:1px solid #edf0e8;padding:11px 0 0;border-radius:0;font-size:12px;min-height:55px;margin-top:13px;background:transparent}.empty-slot{font-size:12px;line-height:1.6;color:#8a9883;text-align:center;align-self:center;padding:22px 10px;pointer-events:none}.empty-canvas{min-height:350px;border:1px dashed #bfcdb7;border-radius:16px;display:grid;place-items:center;text-align:center;background:#f0f4e9;padding:30px}.empty-symbol{margin:0 auto 18px;height:58px;width:58px;border:1px solid #c4d2ba;border-radius:15px;display:grid;place-items:center;font-size:25px;background:#fbfcf8}.empty-canvas h3{font-size:19px;margin-bottom:9px}.empty-canvas p{font-size:13px;color:var(--muted);max-width:310px;margin-bottom:20px}.add-group-tile{border:1px dashed #bdcbb4;background:transparent;min-height:110px;border-radius:15px;display:flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:500}.explanation{margin-top:24px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:15px}.explanation h3{margin-bottom:6px}.explanation p{font-size:12px;color:var(--muted);margin-bottom:13px}.explanation textarea{background:#fafbf8;min-height:90px;font-size:13px}.board-footer{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:22px}.board-footer p{font-size:12px;color:var(--muted);max-width:450px;margin:0}.rank-zone .card-stack{gap:9px}.rank-zone .sort-card{min-height:62px}.ranking-label{font-size:10px;color:var(--muted);letter-spacing:.04em;padding:0 0 9px}.ranking-label.bottom{padding:9px 0 0}.complete{max-width:750px;margin:50px auto;padding:0 25px}.complete-check{height:60px;width:60px;border-radius:50%;background:var(--sage);color:var(--green);display:grid;place-items:center;font-size:25px;margin-bottom:24px}.complete .panel{padding:35px}.summary-group{padding:16px 0;border-bottom:1px solid var(--line)}.summary-group:last-child{border:0}.summary-group h3{margin:0 0 10px}.chips{display:flex;gap:7px;flex-wrap:wrap}.chip{font-size:12px;border-radius:7px;padding:7px 10px;background:#eff3e8;overflow-wrap:anywhere}.study-footer{text-align:center;margin-top:36px;font-size:11px;color:#8a9788;line-height:1.7}.banner{padding:16px 20px;background:#fff0dc;border:1px solid #e2c99f;border-radius:12px;margin-bottom:22px;color:#795222;font-size:13px;line-height:1.6;display:flex;align-items:center;justify-content:space-between;gap:16px}.banner-actions{display:flex;gap:6px;flex-shrink:0}.stats-row{display:flex;gap:12px;margin:25px 0}.stat{border:1px solid var(--line);border-radius:13px;background:#fff;padding:15px 22px;min-width:150px}.stat strong{font-size:26px;display:block;margin-bottom:5px}.stat span{font-size:11px;color:var(--muted)}.create-panel{padding:23px;display:flex;gap:15px;align-items:end;flex-wrap:wrap;margin:25px 0}.create-panel label{flex:1;min-width:150px}.create-panel label:first-child{max-width:145px;min-width:100px}.create-panel button{height:42px}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:15px;background:white}table{width:100%;border-collapse:collapse;text-align:left;font-size:13px}th{background:#edf2e7;color:var(--muted);font-size:11px;font-weight:600;padding:14px 18px;white-space:nowrap}td{padding:17px 18px;border-top:1px solid #e7ece2;white-space:nowrap}.table-code{font-size:17px;font-weight:650}.table-actions{display:flex;gap:5px}.table-actions button{font-size:11px;padding:7px 9px}.empty-table{text-align:center;padding:50px!important;white-space:normal}.admin-note{font-size:12px;line-height:1.8;color:var(--muted);margin-top:20px}.export-actions{display:flex;gap:7px;flex-wrap:wrap}.export-actions button{font-size:12px}.table-title{display:flex;justify-content:space-between;align-items:center;margin:28px 0 15px;gap:15px}.table-title h2{margin:0}.status-pill{display:inline-block;border-radius:20px;background:#eef1e8;padding:5px 9px;font-size:10px}.status-pill.completed{background:#dcebd8;color:#315b2c}.status-pill.active{background:#fff0ce;color:#896426}.loading{padding:80px;text-align:center;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:18px;padding:28px;max-width:520px;width:calc(100% - 30px);box-shadow:0 25px 100px #183e3530;color:var(--ink);background:white}dialog::backdrop{background:#18312b60;backdrop-filter:blur(3px)}dialog h2{margin-bottom:10px}dialog p{font-size:13px;color:var(--muted)}dialog form{display:grid;gap:16px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:10px}.link-field{width:100%;font-family:monospace;font-size:12px}.replay-dialog{max-width:1000px}.replay-controls{display:flex;align-items:center;gap:10px;margin:20px 0}.replay-controls input{flex:1;padding:0}.replay-event{font-size:12px;background:#f1f4eb;padding:12px;border-radius:9px;line-height:1.7;overflow-wrap:anywhere}.replay-board{max-height:49vh;overflow:auto;margin-top:20px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.replay-group{border:1px solid var(--line);border-radius:10px;padding:13px}.replay-group h3{font-size:13px}.replay-group .chip{display:block;margin:6px 0}.replay-details{margin-top:15px;font-size:12px}.replay-details pre{max-height:160px;overflow:auto;font-size:11px;white-space:pre-wrap;background:#f8faf5;padding:10px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:100;background:#254b41;color:white;padding:12px 20px;border-radius:12px;font-size:13px;box-shadow:var(--shadow);display:none;max-width:90vw}#toast.visible{display:block}#drag-ghost{position:fixed;top:0;left:0;z-index:1000;pointer-events:none;padding:17px 20px;background:#fffef7;color:var(--green);border:1px solid #9fb28e;border-radius:10px;box-shadow:0 12px 36px #193e3730;max-width:250px;font-size:13px;font-weight:600}#drop-marker{position:fixed;height:3px;background:#557b46;border-radius:3px;z-index:900;pointer-events:none}.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}.full-width{width:100%}.hidden{display:none!important}.no-select{user-select:none}.protocol-note{background:#edf2e6;border-radius:10px;padding:12px 15px;font-size:12px;line-height:1.7;color:#61715b}.form-row{display:grid;gap:13px}.top-space{margin-top:20px}
@media(min-width:1400px){.page{max-width:1400px}.board-layout{grid-template-columns:310px minmax(0,1fr)}.groups-grid{gap:22px}}
@media(max-width:950px){header{padding:0 23px}.page{padding:30px 22px 45px}.board-layout{grid-template-columns:255px minmax(0,1fr);gap:18px}.groups-grid{grid-template-columns:1fr}.login-layout{gap:35px}.login-copy h1{font-size:40px}.hero{gap:18px}.hero-tools{max-width:220px}.replay-board{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:650px){header{height:auto;min-height:76px;padding:15px 18px;align-items:flex-start}.brand-sub{font-size:10px}.brand-name{font-size:16px}.header-actions{gap:7px;justify-content:flex-end}.header-actions .save-status{width:100%;justify-content:flex-end;font-size:10px}.badge{font-size:11px;padding:5px 9px}.page{padding:26px 16px 40px}.hero{display:block;margin-bottom:22px}.hero h1{font-size:31px}.hero p{font-size:13px}.hero-tools{max-width:none;justify-content:flex-start;margin-top:16px}.board-layout{display:flex;flex-direction:column;gap:20px}.bank-panel{position:static;max-height:none;width:100%;padding:15px}.bank-panel .card-stack{grid-template-columns:repeat(2,minmax(0,1fr))}.bank-panel .sort-card{min-height:100px}.bank-panel .card-tools{flex-wrap:wrap}.bank-panel .card-tools select{max-width:100px}.canvas{width:100%}.groups-grid{grid-template-columns:1fr}.board-footer{align-items:flex-start}.board-footer p{font-size:11px}.board-footer button{white-space:nowrap}.login-layout{display:block;margin:35px auto;padding:0 20px}.login-copy h1{font-size:36px}.login-art{display:none}.login-form{margin-top:30px}.intro-wrap{margin:28px auto}.intro-card{padding:26px}.intro-card h1{font-size:30px}.intro-bottom{align-items:flex-start;flex-direction:column}.intro-bottom button{width:100%}.stats-row{gap:7px}.stat{min-width:0;flex:1;padding:12px}.stat strong{font-size:23px}.create-panel{padding:18px}.table-title{align-items:flex-start;flex-direction:column}.export-actions{gap:6px}.banner{flex-direction:column;align-items:flex-start}.replay-board{grid-template-columns:1fr}.replay-controls{gap:5px}.replay-controls button{padding:7px}.complete{margin:30px auto}.complete .panel{padding:25px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}