:root{--ink:#172334;--muted:#607084;--line:#dce4ed;--surface:#ffffff;--canvas:#f3f6f9;--primary:#1f6ec9;--primary-strong:#1658a5;--primary-soft:#eaf3ff;--good:#1e8a5b;--warn:#a65d00;--bad:#b53131;--shadow:0 18px 50px rgba(24,48,77,0.08)}*{box-sizing:border-box}body,html{min-height:100%}body{margin:0;color:var(--ink);background:radial-gradient(circle at 0 0,#eaf3ff 0,transparent 32rem),var(--canvas);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}main{width:min(920px,calc(100% - 32px));margin:0 auto;padding:32px 0 48px}.brand{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:24px}.brand h1{margin:0;font-size:clamp(1.55rem,2.5vw,2.15rem);letter-spacing:-.03em}.brand p{margin:6px 0 0;color:var(--muted);font-size:.96rem}.badge,.phase-chip{display:inline-flex;align-items:center;border-radius:999px;font-weight:700;white-space:nowrap}.badge{padding:7px 11px;background:var(--primary-soft);color:var(--primary-strong);font-size:.8rem}.card,.task-shell{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.card{padding:clamp(22px,4vw,34px);margin-bottom:18px}.card h2{margin:0 0 12px;font-size:1.2rem}.intro{margin:0 0 16px;color:#344358;line-height:1.75}.note{margin:14px 0 0;color:var(--muted);font-size:.9rem;line-height:1.65}.center-card{text-align:center}.center-card .intro{max-width:650px;margin:0 auto 18px}.centered{text-align:center}label{display:block;margin:18px 0 8px;font-size:.92rem;font-weight:700}input{width:100%;min-height:46px;border:1px solid #cbd6e1;border-radius:10px;padding:0 13px;outline:none;transition:border-color .15s,box-shadow .15s;background:#fff}input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(31,110,201,.13)}.exit,.primary,.secondary{border:0;border-radius:10px;min-height:46px;padding:0 18px;font-weight:800;transition:transform .12s,filter .12s}.exit:hover,.primary:hover,.secondary:hover{transform:translateY(-1px);filter:brightness(.98)}.primary{width:100%;margin-top:20px;background:var(--primary);color:#fff}.secondary{background:#eef2f7;color:#293849}.exit{background:#fff0f0;color:#a12727}.standalone{margin-top:12px;min-width:180px}.compact-button{width:auto;min-height:40px;margin:0}.duration-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:10px;gap:10px}.duration{min-height:43px;border:1px solid #ccd7e3;border-radius:10px;background:#fff;color:#38495c;font-weight:700}.duration.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 8px 17px rgba(31,110,201,.22)}.rule-box{display:grid;grid-gap:10px;gap:10px;padding:16px;border:1px solid #cfe0f3;background:#f5faff;border-radius:12px;text-align:left;line-height:1.65}.rule-box.compact{max-width:570px;margin:0 auto}.examples{display:flex;flex-wrap:wrap;gap:8px 22px;padding-top:6px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:1.04rem}kbd{display:inline-block;padding:1px 6px;border:solid #b7c5d3;border-width:1px 1px 2px;border-radius:5px;background:#fff;color:#25384b;font-family:inherit;font-size:.86em}.mini-rules{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:16px 0 8px}.mini-rules span{padding:6px 10px;border-radius:999px;background:#f0f5fb;color:#41536a;font-size:.86rem}.status{margin-top:16px;padding:10px 12px;border-radius:10px;font-size:.9rem;line-height:1.45;white-space:pre-line}.status.ok{background:#e9f8ef;color:#176a43}.status.warn{background:#fff8e8;color:#8e5605}.status.bad{background:#ffeded;color:#a12727}.task-shell{padding:clamp(16px,3vw,30px);min-height:560px;display:flex;flex-direction:column}.task-toolbar{display:flex;align-items:center;gap:10px}.phase-chip{padding:6px 10px;font-size:.85rem}.phase-chip.practice{color:#8c5200;background:#fff3de}.phase-chip.formal{color:#175c9e;background:#e8f3ff}.task-timer{margin-left:auto;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-size:1.22rem;font-weight:800}.small-exit{min-height:34px;padding:0 11px;font-size:.85rem}.progress-track{height:8px;overflow:hidden;border-radius:999px;background:#e9eff5;margin-top:17px}.progress-bar{height:100%;border-radius:inherit;background:var(--primary);transition:width .1s linear}.task-hint{min-height:26px;margin:20px 0 0;text-align:center;color:var(--muted)}.stimulus-stage{flex:1 1;min-height:300px;display:flex;align-items:flex-start;justify-content:center;padding:clamp(48px,7vh,92px) 12px clamp(88px,13vh,138px)}.fixation{font-size:clamp(3rem,9vw,5.4rem);line-height:1;font-weight:300}.arrows{max-width:100%;overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-weight:800;letter-spacing:.1em;font-size:clamp(3rem,11vw,7rem);line-height:1;color:#101820}.feedback{min-height:30px;text-align:center;font-weight:800;color:#3d536c}.response-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:14px;gap:14px;margin-top:8px}.response{min-height:88px;display:grid;place-items:center;grid-gap:5px;gap:5px;border:2px solid #c5d6e9;border-radius:14px;background:#f9fcff;color:#153658;transition:transform .1s,border-color .1s,background .1s,box-shadow .1s;-webkit-tap-highlight-color:transparent;outline:none}.response:focus,.response:focus-visible{outline:none;box-shadow:none}.response.selected,.response.selected:disabled{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-strong);box-shadow:0 0 0 3px rgba(31,110,201,.14);opacity:1}@media (hover:hover) and (pointer:fine){.response:hover:not(:disabled){transform:translateY(-2px);border-color:var(--primary);background:#eff7ff}}.response strong{font-size:clamp(1.15rem,3vw,1.45rem)}.response small{color:#65768b}.task-status{text-align:center}.summary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px;gap:10px;margin:22px 0;text-align:left}.summary-grid>div{min-height:83px;display:flex;flex-direction:column;justify-content:space-between;padding:13px;border-radius:12px;background:#f5f8fb;border:1px solid #e0e8f0}.summary-grid .wide{grid-column:1/-1}.summary-grid span{color:#66778b;font-size:.84rem}.summary-grid strong{font-size:1.1rem}.admin-wrap{width:min(1440px,calc(100% - 32px))}.admin-actions{display:flex;flex-wrap:wrap;gap:10px}.tabs{display:flex;gap:8px;margin:20px 0 10px}.tabs button{border:1px solid #cbd8e5;background:#fff;color:#52647a;border-radius:9px;min-height:38px;padding:0 13px;font-weight:750}.tabs button.active{color:#fff;background:var(--primary);border-color:var(--primary)}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow)}.admin-table{min-width:1620px;width:100%;border-collapse:collapse;font-size:.86rem}.admin-table td,.admin-table th{padding:12px 10px;text-align:left;border-bottom:1px solid #e8edf3;vertical-align:middle;white-space:nowrap}.admin-table th{position:-webkit-sticky;position:sticky;top:0;background:#f5f8fb;color:#475c74;font-size:.8rem;z-index:1}.admin-table tbody tr:hover{background:#fbfdff}.empty-row{text-align:center!important;padding:32px!important;color:var(--muted)}.pill{display:inline-flex;padding:5px 8px;border-radius:999px;font-size:.78rem;font-weight:750}.pill.completed{color:#176a43;background:#e7f7ee}.pill.exited{color:#9a5b00;background:#fff4df}.pill.started{color:#2d6ea8;background:#eaf4ff}.danger-link,.restore-link{min-height:34px;border:0;border-radius:8px;padding:0 10px;font-size:.82rem;font-weight:800}.danger-link{color:#a12727;background:#fff0f0}.restore-link{color:#176a43;background:#e8f8ef}@media (max-width:640px){.admin-wrap,main{width:min(100% - 24px,920px);padding-top:20px}.brand{margin-bottom:16px}.card{padding:20px;border-radius:15px}.duration-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.task-shell{min-height:calc(100dvh - 42px);border-radius:15px}.stimulus-stage{min-height:clamp(350px,47vh,500px);align-items:flex-start;padding-top:clamp(62px,10vh,108px);padding-bottom:clamp(120px,18vh,180px)}.response-grid{gap:10px}.response{min-height:80px}.response small{font-size:.7rem}.summary-grid{grid-template-columns:1fr}.summary-grid .wide{grid-column:auto}.task-toolbar{gap:7px}.task-timer{font-size:1.02rem}}