@font-face{font-family:LocalDisplay;src:local('Avenir Next'),local('Avenir'),local('Arial');font-display:swap}
:root{--bg:#edf3f8;--ink:#12344a;--muted:#64788a;--blue:#325ae8;--blue-soft:#eaf0ff;--coral:#d85943;--white:#fff;--line:#dce5ed;--green:#167454;--radius:18px;--mono:'SFMono-Regular',Consolas,'Liberation Mono',monospace;--body:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 var(--body)}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;min-height:42px;border:0;border-radius:10px;padding:10px 17px;background:var(--blue);color:white;font-weight:600;transition:background .15s,transform .15s}button:hover:not(:disabled){background:#2348cb}button:active:not(:disabled){transform:translateY(1px)}button:disabled{cursor:not-allowed;opacity:.45}button.secondary{background:var(--white);border:1px solid var(--line);color:var(--ink)}button.secondary:hover:not(:disabled){background:var(--blue-soft)}button.danger{background:var(--coral)}button.ghost{background:transparent;color:var(--muted);padding:8px 10px}button.ghost:hover:not(:disabled){background:var(--blue-soft);color:var(--ink)}button.small{min-height:34px;padding:6px 11px;font-size:12px}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}a.button{display:inline-flex;align-items:center;justify-content:center;padding:9px 16px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink);font-weight:600}input,select,textarea{width:100%;border:1px solid #cbd7e2;background:white;border-radius:10px;padding:11px 13px;color:var(--ink);outline:none}input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px #325ae819}input:disabled,textarea:disabled{background:#f1f5f9}textarea{resize:vertical;min-height:82px}label{display:block;font-weight:600;margin-bottom:7px}label .optional{font-weight:400;color:var(--muted);font-size:12px}h1,h2,h3,p{margin:0}h1{font-size:30px;line-height:1.35;letter-spacing:-.7px}h2{font-size:20px;line-height:1.4}h3{font-size:15px}.muted{color:var(--muted)}.small-text{font-size:12px}.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}.eyebrow{font:600 11px/1.4 var(--mono);letter-spacing:1.8px;text-transform:uppercase;color:var(--muted)}.row{display:flex;align-items:center;gap:12px}.spread{justify-content:space-between}.wrap{flex-wrap:wrap}.stack{display:grid;gap:18px}.field{margin-bottom:17px}.help{font-size:12px;color:var(--muted);margin-top:7px}.divider{height:1px;background:var(--line);margin:22px 0}.pill{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:600;padding:4px 9px;border-radius:6px;background:#edf1f5;color:var(--muted);white-space:nowrap}.pill.open{background:#e0f3ea;color:var(--green)}.pill.closed{background:#fff0e9;color:#a35030}.pill.revealed{background:var(--blue-soft);color:var(--blue)}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--green)}.dot.offline{background:var(--coral)}.empty{text-align:center;padding:58px 20px;color:var(--muted)}.empty h2,.empty h3{color:var(--ink);margin-bottom:8px}.empty button{margin-top:20px}.boot{text-align:center;padding:30vh 20px}.brand{display:flex;align-items:center;gap:11px}.brand img{width:36px;height:36px}.brand strong{font-family:LocalDisplay,var(--body);font-size:15px;letter-spacing:.6px}.brand small{display:block;font-size:11px;color:var(--muted);letter-spacing:1px}.card{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:24px}.card-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px}.number{font:600 32px/1.2 var(--mono);letter-spacing:-1.3px}.topbar{height:76px;display:flex;justify-content:space-between;align-items:center;padding:0 32px;border-bottom:1px solid var(--line);background:white;gap:20px}.topbar-right{display:flex;align-items:center;gap:18px}.connection{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:7px}.admin-shell{display:grid;grid-template-columns:224px 1fr;min-height:calc(100vh - 76px)}.sidebar{padding:28px 20px;background:#f6f9fc;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:28px}.sidebar select{font-size:12px;padding:10px 8px}.nav{display:grid;gap:7px}.nav button{background:transparent;text-align:left;color:var(--muted);font-weight:500;display:flex;align-items:center;gap:12px}.nav button.active{background:var(--ink);color:white}.nav .nav-num{font:11px var(--mono);opacity:.65}.sidebar-note{font-size:12px;color:var(--muted);margin-top:auto;border-top:1px solid var(--line);padding-top:20px}.admin-main{padding:30px 36px 48px;max-width:1650px;width:100%;margin:auto}.page-title{margin-bottom:24px;display:flex;justify-content:space-between;align-items:flex-start;gap:18px}.page-title .eyebrow{margin-bottom:7px}.page-title p{color:var(--muted);margin-top:6px}.control-strip{display:flex;align-items:center;justify-content:space-between;gap:15px;border:1px solid #cddaf2;background:#f5f8ff;border-radius:12px;padding:12px 16px;margin-bottom:24px;font-size:12px}.control-strip.owned{border-color:#bfe2d3;background:#edf8f2}.control-strip strong{font-size:13px}.live-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(260px,.8fr);gap:20px;margin-bottom:22px}.video-stage{aspect-ratio:16/9;background:#16364d;border-radius:12px;display:grid;place-items:center;overflow:hidden;color:#dce8f2;position:relative}.video-stage video{width:100%;height:100%;max-height:410px;object-fit:contain;background:#0e2434}.video-placeholder{text-align:center;padding:28px}.video-placeholder .screen{width:64px;height:42px;border:2px solid #68859b;border-radius:7px;margin:0 auto 19px;position:relative}.video-placeholder .screen:after{content:'';position:absolute;border-top:7px solid transparent;border-bottom:7px solid transparent;border-left:11px solid #a4bed0;top:12px;left:27px}.video-placeholder strong{display:block;margin-bottom:5px;font-size:16px}.round-header{margin-bottom:16px}.round-number{width:48px;height:48px;background:var(--blue-soft);border-radius:12px;display:grid;place-items:center;font:600 21px var(--mono);color:var(--blue)}.control-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.control-actions button{flex:1}.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.stat{padding:17px;border:1px solid var(--line);border-radius:12px}.stat .label{font-size:12px;color:var(--muted);margin-bottom:10px}.stat.answer{grid-column:1/-1;background:var(--ink);color:white;border:0}.stat.answer .label{color:#bad0df}.stat.answer .number{font-size:38px}.stat .unit{font-size:13px;font-family:var(--body);letter-spacing:0}.stat .foot{font-size:11px;margin-top:7px;color:var(--muted)}.stat.answer .foot{color:#bad0df}.table-wrap{overflow:auto;margin:0 -2px}table{border-collapse:collapse;width:100%;white-space:nowrap;font-size:13px}th{text-align:left;font-weight:500;color:var(--muted);font-size:11px;letter-spacing:.3px;padding:12px;border-bottom:1px solid var(--line);background:#f7fafc}td{padding:15px 12px;border-bottom:1px solid #eaf0f5}tr:last-child td{border-bottom:0}.num{text-align:right;font-family:var(--mono)}.reason{white-space:normal;min-width:130px;max-width:300px;color:var(--muted);font-size:12px}.name-cell strong{display:block}.name-cell small{color:var(--muted);font-size:11px}.negative{color:#b54e3d}.positive{color:var(--blue)}.score-badge{background:var(--blue-soft);color:var(--blue);padding:5px 8px;border-radius:6px;font-weight:600}.toolbar{display:flex;align-items:center;gap:10px}.toolbar select{min-width:150px}.compact-select{max-width:220px}.list-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}.round-card .round-number{width:38px;height:38px;font-size:18px}.round-card h3{font-size:16px;margin:17px 0 14px}.round-card .meta{display:flex;justify-content:space-between;margin:8px 0;color:var(--muted);font-size:12px}.round-card .meta strong{color:var(--ink);font-family:var(--mono)}.round-card .actions{display:flex;gap:8px;margin-top:20px}.round-card .actions button{flex:1}.upload-note{font-size:11px;color:var(--muted);margin-top:14px}.audit-line{display:flex;justify-content:space-between;gap:15px;font-size:12px;padding:11px 0;border-bottom:1px solid var(--line)}.audit-line:last-child{border:0}.scale{margin:10px 0 25px;padding:0 10px}.scale-track{height:64px;position:relative;border-bottom:2px solid #c7d5e1;margin-top:8px}.scale-mark{position:absolute;bottom:-6px;width:10px;height:10px;background:var(--blue);border:2px solid white;border-radius:50%;transform:translateX(-50%)}.scale-answer{position:absolute;bottom:-8px;height:59px;width:2px;background:var(--coral)}.scale-answer-label{position:absolute;top:-24px;left:0;transform:translateX(-50%);color:var(--coral);font-size:11px;white-space:nowrap}.scale-axis{display:flex;justify-content:space-between;font:10px var(--mono);color:var(--muted);padding-top:12px}.scale-caption{display:flex;gap:18px;justify-content:flex-end;font-size:11px;color:var(--muted);margin-top:15px}.legend-dot{display:inline-block;height:7px;width:7px;border-radius:50%;background:var(--blue);margin-right:5px}.legend-dot.real{background:var(--coral)}.login-page{min-height:100vh;display:grid;grid-template-columns:1.05fr 1fr;background:white}.login-story{background:#dfeaf3;position:relative;padding:52px 60px;display:flex;flex-direction:column;overflow:hidden}.login-story h1{font-size:clamp(34px,4vw,58px);letter-spacing:-2px;line-height:1.2;margin-top:70px;position:relative;z-index:1}.login-story h1 em{font-style:normal;color:var(--blue)}.login-story p{font-size:15px;color:#597186;max-width:340px;margin-top:24px}.login-story-footer{margin-top:auto;padding-top:45px;font:11px var(--mono);color:#597186;letter-spacing:1.5px}.signal-art{height:190px;margin-top:45px;display:flex;align-items:flex-end;gap:12px;border-bottom:2px solid #bdcddb;padding-bottom:14px;max-width:430px;position:relative}.signal-art span{flex:1;border-radius:8px 8px 2px 2px;background:#aabedb;height:30%}.signal-art span:nth-child(2){height:50%}.signal-art span:nth-child(3){height:42%}.signal-art span:nth-child(4){height:75%;background:#7899e7}.signal-art span:nth-child(5){height:62%;background:#5077e5}.signal-art span:nth-child(6){height:100%;background:var(--blue)}.signal-art span:nth-child(7){height:80%;background:#688ae8}.signal-art span:nth-child(8){height:55%;background:#aabedb}.login-form-wrap{display:grid;place-items:center;padding:50px}.login-form{width:100%;max-width:355px}.login-form h2{font-size:28px;margin:10px 0}.login-form .intro{color:var(--muted);margin-bottom:32px}.login-form .submit{width:100%;margin-top:7px}.login-foot{font-size:12px;color:var(--muted);text-align:center;margin-top:23px}.form-error{color:#b54332;font-size:13px;margin:10px 0;min-height:20px}.student-main{max-width:790px;margin:0 auto;padding:32px 24px 60px}.student-title{margin-bottom:24px}.student-title .eyebrow{margin-bottom:9px}.student-title h1{font-size:25px}.round-progress{display:flex;gap:5px;margin-top:20px}.round-progress span{height:4px;flex:1;border-radius:5px;background:#d7e1eb}.round-progress span.done{background:#99addc}.round-progress span.current{background:var(--blue)}.student-round{padding:25px}.student-round .video-stage{margin-bottom:25px}.prediction-input{display:flex;align-items:center;position:relative}.prediction-input input{font:600 32px/1.3 var(--mono);padding:15px 46px 15px 17px;height:74px;letter-spacing:-1px}.prediction-input span{position:absolute;right:17px;color:var(--muted)}.prediction-preview{height:23px;margin-top:6px;color:var(--blue);font-size:12px}.submit-answer{width:100%;padding:14px;margin-top:4px}.submitted-panel{background:#edf8f3;border:1px solid #c5e6d6;border-radius:12px;padding:23px;text-align:center}.submitted-panel .number{color:var(--green);margin:13px 0 7px}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}.result-cell{background:#f3f6fb;border-radius:10px;padding:18px}.result-cell .number{font-size:25px;margin-top:9px}.result-cell.answer{background:var(--blue-soft)}.student-history{margin-top:28px}.history-item{display:flex;justify-content:space-between;align-items:center;padding:18px 0;border-bottom:1px solid var(--line);gap:12px}.history-item .sub{font-size:12px;color:var(--muted);margin-top:3px}.waiting-symbol{font:500 64px var(--mono);color:#bdd0df;line-height:1.2;margin-bottom:18px}.receipt-time{font-size:11px;color:var(--muted);margin-top:8px}.blank-note{padding:15px;border-radius:10px;background:#fff6ee;font-size:12px;color:#8b6344}.login-mobile-brand{display:none}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:15px}dialog{border:1px solid var(--line);border-radius:20px;box-shadow:0 24px 100px #12344a33;width:min(580px,calc(100% - 32px));padding:28px;color:var(--ink);max-height:90dvh;overflow:auto}dialog::backdrop{background:#0b233f72;backdrop-filter:blur(3px)}dialog .modal-header{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:22px}dialog .modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}dialog video{width:100%;max-height:60vh;background:var(--ink);border-radius:12px}.credentials-notice{padding:12px 14px;background:#fff3e9;border-radius:10px;color:#8c572a;font-size:12px;margin-bottom:18px}.form-tabs{display:flex;gap:8px;margin-bottom:20px}.form-tabs button{flex:1}.form-tabs button.active{background:var(--ink);color:white}#toast{position:fixed;z-index:20;bottom:28px;left:50%;transform:translateX(-50%) translateY(100px);opacity:0;max-width:calc(100% - 32px);padding:12px 20px;background:var(--ink);color:white;border-radius:12px;box-shadow:0 10px 30px #12344a22;transition:.2s;pointer-events:none}#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}#toast.error{background:#a64234}:focus-visible{outline:3px solid #83a1ff;outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(min-width:1600px){.admin-main{padding:38px 44px}.live-grid{grid-template-columns:1.4fr 1fr}}
@media(max-width:1100px){.admin-shell{grid-template-columns:190px 1fr}.admin-main{padding:24px}.live-grid{grid-template-columns:1fr}.stats-card .stat-grid{grid-template-columns:1.4fr 1fr 1fr}.stats-card .stat.answer{grid-column:auto}.stats-card .number{font-size:28px}.login-story{padding:45px 38px}.login-form-wrap{padding:35px}}
@media(max-width:900px){.topbar{height:auto;min-height:70px;padding:14px 18px;gap:10px}.topbar-right{gap:10px}.topbar .brand strong{font-size:13px}.topbar .brand small{font-size:10px}.topbar .brand img{width:30px;height:30px}.topbar .connection{font-size:10px}.topbar-right .user-name{display:none}.admin-shell{display:block}.sidebar{padding:12px 16px;border-right:0;border-bottom:1px solid var(--line);gap:12px;display:block}.sidebar .event-selector{display:flex;align-items:center;gap:10px}.event-selector label{display:none}.event-selector select{flex:1}.event-selector button{white-space:nowrap}.nav{display:flex;gap:4px;overflow:auto;margin-top:12px}.nav button{flex:1;white-space:nowrap;font-size:12px;padding:9px 10px;justify-content:center}.nav-num,.sidebar-note{display:none!important}.admin-main{padding:21px 16px}.page-title{margin-bottom:18px}.page-title h1{font-size:24px}.page-title p{font-size:12px}.page-title .toolbar{flex-wrap:wrap;justify-content:flex-end}.control-strip{align-items:flex-start;padding:12px}.control-strip .muted{display:block}.control-strip button{white-space:nowrap}.card{padding:19px}.live-grid{gap:15px}.stats-card .stat-grid{grid-template-columns:1fr 1fr}.stats-card .stat.answer{grid-column:1/-1}.stat.answer .number{font-size:36px}.table-wrap{margin:0 -10px}.card-head{flex-wrap:wrap}.toolbar select{min-width:110px}.toolbar .button{font-size:12px}.student-main{padding:22px 15px 40px}.student-round{padding:19px}.student-title h1{font-size:22px}.student-round .video-stage{margin:0 -1px 22px}.number{font-size:29px}.result-cell{padding:16px 12px}.result-cell .number{font-size:21px}.login-page{display:block;min-height:100dvh;background:var(--bg)}.login-story{display:none}.login-form-wrap{padding:40px 23px 32px;min-height:100dvh;display:flex;align-items:center;justify-content:center}.login-form{max-width:390px;background:white;border:1px solid var(--line);border-radius:20px;padding:30px 24px}.login-mobile-brand{display:flex;margin-bottom:38px}.login-form h2{font-size:26px}.login-form .intro{font-size:13px}.login-foot{font-size:11px}.grid-2{grid-template-columns:1fr;gap:0}dialog{padding:23px 20px}.list-grid{grid-template-columns:1fr}.scale-answer-label{font-size:10px}.card h2{font-size:17px}}
/* Allow narrow screens to shrink the layout while keeping wide tables scrollable. */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
.admin-main,.sidebar,.card,.toolbar,.page-title>div,.row>div{min-width:0}
.table-wrap{max-width:100%;overscroll-behavior-x:contain}
.student-title,.card h2,.round-card h3,.history-item,.eyebrow,.help,.audit-line{overflow-wrap:anywhere}
.round-number,.pill,.score-badge{flex-shrink:0}
.stat .number{overflow-wrap:anywhere}
.prediction-error:empty{display:none}
.video-stage.has-video{aspect-ratio:auto}
.video-stage.has-video video{height:auto}
@media(max-width:900px){
  input,select,textarea{font-size:16px;min-height:48px}
  button,button.small,button.ghost,a.button{min-height:44px}
  .sidebar select{font-size:16px;min-width:0}
  .topbar{padding-top:max(12px,env(safe-area-inset-top));padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}
  .topbar-right{gap:8px;flex-wrap:wrap;justify-content:flex-end}
  .topbar .connection{font-size:11px;white-space:nowrap}
  .student-main{padding-left:max(15px,env(safe-area-inset-left));padding-right:max(15px,env(safe-area-inset-right));padding-bottom:calc(36px + env(safe-area-inset-bottom))}
  .login-form-wrap{padding:24px max(16px,env(safe-area-inset-right)) calc(24px + env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left))}
  .login-form{padding:26px 22px}
  .login-mobile-brand{margin-bottom:28px}
  .login-form .intro{margin-bottom:24px}
  .login-form .submit,.submit-answer{min-height:52px;font-size:16px}
  .prediction-input input{font-size:clamp(24px,6.5vw,32px);height:68px}
  #reason{min-height:96px}
  .student-round .video-stage:not(.has-video){aspect-ratio:16/10}
  .video-stage.has-video video{max-height:65dvh}
  .video-placeholder{padding:18px}
  .video-placeholder .screen{margin-bottom:12px}
  .submitted-panel .number,.result-cell .number,.stat .number{font-size:clamp(20px,6vw,32px);overflow-wrap:anywhere}
  .page-title{flex-wrap:wrap}
  .page-title>button{width:100%}
  .page-title .toolbar{width:100%;justify-content:stretch}
  .page-title .toolbar select{flex:1;min-width:0;max-width:none}
  .control-strip{flex-wrap:wrap}
  .control-strip>button{margin-left:auto}
  .round-header{flex-wrap:wrap}
  .round-header>.row{flex:1}
  .round-header h2{overflow-wrap:anywhere}
  .nav{overflow:visible;display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
  .nav button{padding:9px 3px;min-width:0}
  .scale{padding:0;margin-left:0;margin-right:0}
  .scale-caption{flex-wrap:wrap;justify-content:flex-start;gap:6px 14px}
  .answer-list{margin:0;overflow:visible}
  .answer-list table,.answer-list tbody{display:block;white-space:normal}
  .answer-list thead{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
  .answer-list tr{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:18px 0;border-bottom:1px solid var(--line)}
  .answer-list tr:first-child{padding-top:0}
  .answer-list tr:last-child{border:0;padding-bottom:0}
  .answer-list td{display:block;border:0;padding:0;text-align:left;min-width:0;overflow-wrap:anywhere}
  .answer-list td[data-label]::before{content:attr(data-label);display:block;font:11px/1.5 var(--body);color:var(--muted);margin-bottom:5px}
  .answer-list .name-cell,.answer-list .reason,.answer-list td:last-child{grid-column:1/-1}
  .answer-list .name-cell{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px}
  .answer-list .reason{min-width:0;max-width:none}
  .answer-list .score-badge{display:inline-block;padding:1px 7px}
  dialog{width:calc(100% - 24px);max-height:calc(100dvh - 24px - env(safe-area-inset-top) - env(safe-area-inset-bottom));padding:20px 18px;overscroll-behavior:contain}
  dialog .modal-actions{display:flex;flex-wrap:wrap}
  dialog .modal-actions button{flex:1;min-width:100px}
  dialog .modal-header button{min-width:44px;flex-shrink:0}
  #toast{bottom:calc(16px + env(safe-area-inset-bottom));width:max-content;max-width:calc(100% - 32px)}
}
@media(max-width:480px){
  .result-grid{grid-template-columns:1fr}
  .history-item{align-items:flex-start}
  .history-item .score-badge{font-size:12px}
}
@media(max-width:360px){
  .topbar .connection span{display:none}
  .login-form{padding:24px 18px}
  .student-round{padding:17px}
  .student-title h1{font-size:21px}
}
@media(max-height:600px) and (max-width:900px){
  .login-form-wrap{align-items:flex-start;padding-top:16px}
  .login-mobile-brand{margin-bottom:18px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* Caption and publication time are part of the learner's viewing context. */
.student-main{max-width:1040px}
.student-video-context{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(240px,1fr);gap:24px;margin-bottom:26px;align-items:stretch}
.student-round .student-video-context .video-stage{margin:0;min-width:0}
.video-context{min-width:0;padding:22px;background:#f2f6fa;border-left:3px solid #c8d7e8;border-radius:0 12px 12px 0}
.context-label{color:var(--muted);font-size:12px;letter-spacing:.08em}
.video-caption{font-size:17px;line-height:1.85;white-space:pre-wrap;overflow-wrap:anywhere;margin:13px 0 25px}
.publication{display:flex;flex-direction:column;gap:6px;font-size:12px;color:var(--muted)}
.publication time{font:14px/1.6 var(--mono);color:var(--ink)}
.history-entry{border-bottom:1px solid var(--line);padding-bottom:16px}
.history-entry .history-item{border:0}
.history-context summary,.round-context summary{cursor:pointer;color:var(--muted);font-size:12px;padding:8px 0;min-height:36px}
.history-context .video-context,.round-context .video-context{margin-top:8px;padding:16px}
.round-context .video-caption{font-size:14px;line-height:1.7;margin-bottom:16px}
.live-grid>.card>.video-context{margin-top:18px}
@media(max-width:720px){
  .student-video-context{grid-template-columns:1fr;gap:16px;margin-bottom:24px}
  .video-context{padding:17px}
  .video-caption{font-size:16px;line-height:1.8;margin:10px 0 18px}
  .history-context summary,.round-context summary{min-height:44px;padding:11px 0}
}

.restart-button{color:#a64234;border-color:#dfc2bc;white-space:nowrap}
.archive-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:15px 0;border-top:1px solid var(--line)}
.archive-row strong{font-size:13px;font-weight:500}
.archive-row a{flex-shrink:0}
@media(max-width:480px){.archive-row{align-items:flex-start;flex-direction:column;gap:10px}.archive-row a{width:100%;text-align:center}}

.page-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px}
@media(max-width:900px){.page-title .page-actions{width:100%}.page-actions>*{flex:1;text-align:center;white-space:nowrap}}