:root{color-scheme:light;--ink:#172235;--muted:#657287;--line:#e1e7ef;--blue:#245eea;--blue-soft:#eef3ff;--bg:#f4f6fa;--green:#12754a;--radius:14px;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-size:16px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}button,input,summary{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #8caaff;outline-offset:3px}button{border:0}.shell{display:flex;min-height:100vh}.sidebar{width:248px;flex:none;background:#fff;border-right:1px solid var(--line);padding:32px 20px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-weight:750;font-size:20px;margin:0 12px 46px}.brand-mark{background:var(--blue);color:white;display:grid;place-items:center;width:40px;height:44px;border-radius:10px;font-size:22px}.brand-caption{display:block;color:var(--muted);font-size:12px;letter-spacing:2px;font-weight:500;margin-top:3px}.side-label{font-size:12px;letter-spacing:2px;color:#8994a5;margin:0 12px 12px}.account-button{width:100%;display:flex;align-items:center;gap:10px;text-align:left;background:transparent;padding:13px 12px;border-radius:10px;color:var(--ink);margin-bottom:5px}.account-button.active{background:var(--blue-soft);color:#174cce}.avatar{width:34px;height:34px;border:1px solid #d4def2;border-radius:50%;display:grid;place-items:center;background:white;flex:none;font-size:14px}.account-button small{display:block;font-size:12px;color:var(--muted);margin-top:4px}.account-title{font-size:14px;overflow-wrap:anywhere}.add-side{color:var(--blue);text-align:left;background:none;padding:15px 12px;font-size:14px}.side-bottom{margin-top:auto;padding:20px 12px 0;color:var(--muted);font-size:12px}.text-button{display:inline-block;background:none;color:var(--blue);padding:8px 0;font-size:14px}.side-bottom .text-button{display:block;margin-top:8px}.live-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--green);margin-right:7px}.workspace{width:min(1300px,100%);padding:42px 48px 24px;margin:auto}.eyebrow{font-size:11px;font-weight:650;letter-spacing:2px;color:#8894a5}h1{font-size:30px;letter-spacing:-1px;margin:9px 0 0;font-weight:700}h2{font-size:20px;margin:0 0 12px}header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:28px}.header-actions{display:flex;align-items:center;gap:18px}.server-status{font-size:13px;color:var(--muted)}.primary,.secondary{font-size:14px;font-weight:600;padding:12px 18px;border-radius:9px;white-space:nowrap}.primary{background:var(--blue);color:white}.primary:hover{background:#194ed0}.secondary{background:white;color:var(--ink);border:1px solid #d9e1eb}.secondary:hover{background:#f8faff}.metrics{display:grid;grid-template-columns:repeat(3,1fr);background:white;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:24px;padding:22px 8px}.metrics>div{padding:0 28px;border-right:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.metrics>div:last-child{border:0}.metrics span{font-size:14px;color:var(--muted)}.metrics strong{font-size:32px;font-weight:600;font-variant-numeric:tabular-nums}.account-controls{display:flex;justify-content:space-between;gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;margin-bottom:30px}.account-controls h2{margin-bottom:5px;font-size:18px}.muted,.account-controls p{color:var(--muted);font-size:14px;line-height:1.7;margin:0}.control-switches{display:flex;gap:30px;flex-wrap:wrap}.switch-control{display:flex;gap:10px;align-items:center;cursor:pointer;font-size:14px;white-space:nowrap}.switch-control input{appearance:none;width:36px;height:22px;background:#d6deea;border:0;border-radius:20px;position:relative;cursor:pointer;flex:none;margin:0;padding:0}.switch-control input:before{content:"";position:absolute;background:white;width:16px;height:16px;left:3px;top:3px;border-radius:50%;transition:transform .15s}.switch-control input:checked{background:var(--blue)}.switch-control input:checked:before{transform:translateX(14px)}.section-heading{display:flex;align-items:baseline;justify-content:space-between;margin:26px 0 15px}.section-heading h2{font-size:17px;margin:0}.section-heading span{font-size:13px;color:var(--muted)}.courses{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.course{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:23px;min-width:0;position:relative;overflow:hidden}.course:before{content:"";height:3px;background:#9cafdb;position:absolute;top:0;left:23px;right:23px}.course.live:before{background:var(--green)}.course-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:22px}.course-number{font-size:12px;color:#8998b1;letter-spacing:2px;font-variant-numeric:tabular-nums}.badge{font-size:12px;padding:5px 9px;border-radius:5px;background:#f1f4f8;color:var(--muted)}.badge.live{background:#e8f6ee;color:var(--green)}.course h3{font-size:20px;margin:0 0 11px;font-weight:650;line-height:1.45}.course p{color:var(--muted);font-size:13px;margin:6px 0;overflow-wrap:anywhere}.course-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid #edf0f6;margin-top:24px;padding-top:18px}.course-choice{font-size:13px;display:flex;align-items:center;gap:8px;cursor:pointer}.course-choice input{accent-color:var(--blue);width:16px;height:16px;margin:0}.course .secondary{padding:8px 12px;font-size:13px}.tabs{display:flex;gap:24px;border-bottom:1px solid var(--line);margin:32px 0 18px}.tabs button{background:none;padding:0 0 13px;color:var(--muted);font-size:14px;border-bottom:2px solid transparent}.tabs button.active{color:var(--blue);border-color:var(--blue);font-weight:600}.log-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.log-entry{display:grid;grid-template-columns:88px 1fr;gap:14px;padding:18px 23px;border-bottom:1px solid #edf0f6;font-size:14px;line-height:1.6}.log-entry:last-child{border:0}.log-entry time{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.log-entry p{margin:0}.log-detail{color:var(--muted);font-size:13px;white-space:pre-wrap;overflow-wrap:anywhere}.empty{text-align:center;background:white;border:1px dashed #d6dfea;border-radius:var(--radius);padding:64px 25px}.empty-icon{display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);font-size:27px;width:54px;height:54px;border-radius:14px;margin:0 auto 22px}.empty p{color:var(--muted);font-size:14px;margin:12px 0 24px;line-height:1.8}.empty.compact{padding:32px 20px}.empty.compact p{margin:6px 0}footer{display:flex;justify-content:space-between;gap:20px;color:#8b96a7;font-size:12px;margin-top:35px;padding:18px 0}.banner,#notice{padding:13px 18px;border-radius:9px;background:#fff4df;color:#8b5f10;font-size:14px;line-height:1.6;margin-bottom:18px}#notice.success{background:#eaf5ef;color:var(--green)}dialog{border:1px solid var(--line);border-radius:18px;width:min(480px,calc(100% - 32px));padding:30px;color:var(--ink);max-height:90vh;overflow:auto;box-shadow:0 24px 80px #11234133}dialog::backdrop{background:#15253f66;backdrop-filter:blur(3px)}.dialog-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.dialog-head h2{margin:7px 0 0}.icon-button{background:#f0f3f7;color:#66748b;border-radius:50%;width:32px;height:32px;font-size:24px;flex:none}form label{display:block;font-size:14px;margin:19px 0}form input{display:block;width:100%;margin-top:8px;border:1px solid #ccd6e3;border-radius:8px;font-size:16px;padding:11px 12px;color:var(--ink);background:white}form small{display:block;font-size:12px;color:var(--muted);line-height:1.7;margin-top:7px}.form-actions{display:flex;gap:12px;margin-top:26px}.qr-stage{text-align:center;background:#f5f7fb;border:1px solid #e5eaf2;border-radius:12px;padding:24px;margin:20px 0}.qr-stage img{width:220px;height:220px;max-width:100%;object-fit:contain;background:white}.qr-stage p{font-size:14px;color:var(--muted);line-height:1.7}.qr-stage .text-button{display:block;margin:8px auto 0}details{font-size:14px;padding:14px 0 0;border-top:1px solid var(--line)}summary{cursor:pointer;color:var(--muted)}#settings-message{font-size:14px;line-height:1.6}.error{color:#b42f35!important}[hidden]{display:none!important}
@media(max-width:1050px){.workspace{padding:30px 26px}.sidebar{width:210px;padding:28px 14px}.header-actions{gap:10px}.server-status{max-width:150px;line-height:1.5}.account-controls{align-items:flex-start;flex-direction:column;gap:18px}.courses{gap:14px}.metrics>div{padding:0 18px}}
@media(max-width:720px){.shell{display:block}.sidebar{width:100%;height:auto;position:static;display:block;padding:18px 20px;border-right:0;border-bottom:1px solid var(--line)}.brand{margin:0 0 18px;font-size:18px}.brand-caption{display:inline;margin-left:9px;letter-spacing:1px}.brand-mark{width:31px;height:34px;font-size:18px}.side-label,.side-bottom{display:none}#accounts{display:flex;overflow-x:auto;gap:8px}.account-button{width:auto;min-width:max-content;padding:10px}.account-button small{display:none}.add-side{padding:12px 6px 0}.workspace{padding:25px 20px}header{align-items:flex-start;margin-bottom:22px}h1{font-size:25px}.header-actions{align-items:flex-end;flex-direction:column}.header-actions .secondary{padding:9px 12px}.server-status{font-size:12px}.eyebrow{font-size:10px}.metrics{padding:17px 0}.metrics>div{display:block;padding:0 18px}.metrics span{font-size:12px;display:block}.metrics strong{display:block;font-size:27px;margin-top:7px}.courses{grid-template-columns:1fr}.account-controls{padding:20px}.control-switches{gap:24px}.course{padding:22px}.course h3{font-size:20px}footer{line-height:1.7;font-size:11px}.form-actions{flex-wrap:wrap}dialog{padding:24px}.log-entry{grid-template-columns:66px 1fr;padding:16px;gap:10px}}
.mobile-settings{display:none}@media(max-width:720px){.mobile-settings{display:inline-block}}
.ai-check{border-top:1px solid var(--line);padding-top:18px;margin-top:20px}.ai-check h3{font-size:16px;margin:0 0 10px}.test-summary{font-size:14px;line-height:1.6;font-weight:600}.test-step{padding:15px 0;border-bottom:1px solid var(--line)}.test-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;font-size:13px;margin-bottom:7px}.test-status{white-space:nowrap;font-size:12px;color:var(--muted)}.test-status.passed{color:var(--green)}.test-status.failed{color:#b42f35}.test-status.running{color:var(--blue)}.test-step p{margin:5px 0}