:root{font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:#172d3d;background:#f3f6f8;font-synthesis:none;--accent:#0d696b;--line:#dae4e8;--muted:#536976}

*{box-sizing:border-box}
body{margin:0;line-height:1.65}
button,input,select{font:inherit}
button,a,input,select,summary{touch-action:manipulation}
a{color:inherit}
button{border:1px solid var(--accent);border-radius:7px;background:var(--accent);color:white;padding:9px 16px;cursor:pointer;font-weight:600}
button:hover{filter:brightness(.95)}
button:disabled{opacity:.45;cursor:not-allowed}
button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #46aeb4;outline-offset:3px}
.secondary{background:white;color:var(--accent)}
.quiet{background:transparent;color:#385363;border:1px solid var(--line);padding:6px 11px;font-size:13px}
.topbar{height:86px;padding:0 4vw;display:flex;align-items:center;justify-content:space-between;background:white;border-bottom:1px solid var(--line)}
.brand{display:flex;gap:13px;align-items:center;text-decoration:none;font-size:18px;font-weight:700;letter-spacing:1px}
.brand small{display:block;font-size:11px;color:var(--muted);font-weight:400;letter-spacing:2px}
.brand-mark{display:grid;place-items:center;background:#153d4c;color:white;width:43px;height:47px;border-radius:10px 10px 10px 1px;font-size:23px}
#identity{display:flex;align-items:center;gap:12px;font-size:13px}
.muted{color:var(--muted)}
main{max-width:1600px;margin:auto;padding:34px 4vw 54px}
h1,h2,h3,p{margin-top:0}
h1{font-size:30px;line-height:1.4;letter-spacing:-.5px;margin-bottom:12px}
h2{font-size:20px;margin-bottom:12px}
h3{font-size:17px}
.eyebrow{font-size:12px;letter-spacing:2px;font-weight:700;color:var(--accent);margin-bottom:15px}
.login-layout{display:grid;grid-template-columns:1.05fr 1fr;max-width:1050px;margin:65px auto 55px;gap:70px;align-items:center}
.welcome h1{font-size:45px;line-height:1.5;margin:20px 0}
.welcome>p:not(.eyebrow){color:var(--muted)}
.welcome-notes{display:grid;gap:18px;margin-top:37px;border-left:3px solid #abcaca;padding-left:20px;font-size:14px;color:#42646b}
.login-card,.center-card{background:white;border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 35px #193c4b08;padding:34px}
.login-card h2{font-size:24px}
.center-card{max-width:610px;margin:30px auto}
.center-card h1{font-size:27px}
label{display:grid;gap:7px;margin-bottom:18px;font-size:13px;font-weight:600}
input,select{width:100%;min-height:43px;border:1px solid #b9cbd4;border-radius:6px;padding:9px 11px;background:white;color:#153447}
input[type=checkbox]{width:17px;min-height:17px;margin:0;accent-color:var(--accent)}
input[type=file]{padding:10px}
.full{width:100%;min-height:45px}
.help{font-size:12px;color:var(--muted);margin:16px 0;line-height:1.8}
.form-error{color:#a7332a;font-size:13px;min-height:20px}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}
.workspace{display:grid;grid-template-columns:174px minmax(0,1fr);gap:30px}
.sidebar{padding-top:10px}
.sidebar nav{display:grid;gap:7px}
.nav-item{border:0;background:transparent;color:#46606e;text-align:left;padding:12px 16px}
.nav-item.active{background:#dfebec;color:#0d595d}
.sidebar-note{font-size:12px;color:var(--muted);padding:24px 14px;line-height:1.9}
.page-title{margin:0 0 26px}
.page-title p:last-child{font-size:14px}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-bottom:26px}
.metrics>div{background:white;border:1px solid var(--line);border-radius:10px;padding:17px 23px}
.metrics strong{font-size:30px;display:block;line-height:1.3;font-variant-numeric:tabular-nums}
.metrics span{font-size:12px;color:var(--muted)}
.panel{background:white;padding:25px;border:1px solid var(--line);border-radius:12px;min-width:0}
.panel-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.panel-heading h2{margin:0}
.filters{display:grid;grid-template-columns:1fr 1fr 1fr 1.1fr;gap:12px}
.filters label{margin-bottom:12px}
.filters select,.filters input{font-size:13px;min-width:0}
.bulk{background:#f1f6f6;border:1px solid #e1ebeb;padding:12px;display:flex;align-items:center;gap:13px;flex-wrap:wrap;border-radius:7px;font-size:12px}
.check-label{display:flex;align-items:center;gap:8px;margin:0;font-size:12px}
.bulk button{padding:6px 12px;font-size:12px}
.table-scroll{overflow:auto;width:100%}
table{border-collapse:collapse;width:100%;font-size:13px;text-align:left}
th{white-space:nowrap;background:#f5f7f8;color:#506a78;font-size:12px;font-weight:600;padding:12px 10px;border-bottom:1px solid var(--line)}
td{padding:16px 10px;border-bottom:1px solid #e8eef1;vertical-align:top}
td small{display:block;color:var(--muted);font-size:11px;white-space:nowrap;margin-top:3px}
td.score{font-weight:700;font-size:18px;font-variant-numeric:tabular-nums}
.badge{display:inline-block;white-space:nowrap;font-size:11px;background:#eef2f5;color:#486376;border-radius:4px;padding:3px 7px}
.badge.success{background:#e3f2e9;color:#246544}
.badge.pending{background:#fff3db;color:#856321}
details{min-width:120px;max-width:480px}
summary{cursor:pointer;color:#096165;font-size:13px}
.criteria{padding-top:12px;min-width:240px}
.criterion{border-bottom:1px solid #e4ecef;padding:11px 0}
.criterion>div{display:flex;justify-content:space-between;gap:16px;font-size:13px}
.criterion span{white-space:nowrap}
.criterion p{margin:7px 0 2px;color:#526772;font-size:12px;white-space:pre-wrap;overflow-wrap:anywhere}
.pagination{display:flex;align-items:center;justify-content:flex-end;gap:14px;font-size:12px;padding-top:18px}
.empty{text-align:center;color:var(--muted);padding:55px 18px;grid-column:1/-1}
.empty h2{color:#45616e}
.student-summary{display:flex;align-items:center;gap:16px;background:#e2edef;border-radius:10px;padding:22px 26px;margin-bottom:24px}
.student-summary strong{font-size:32px}
.student-summary span{font-size:14px}
.student-summary p{margin:0 0 0 auto;font-size:12px;color:#47636c}
.student-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.result-card{background:white;border:1px solid var(--line);border-radius:12px;padding:26px}
.result-top{display:flex;justify-content:space-between;gap:20px;margin-bottom:20px}
.result-top h2{margin-top:13px}
.large-score{font-size:38px;font-weight:700;color:#0f585e;font-variant-numeric:tabular-nums}
.large-score small{font-size:12px;font-weight:400;color:var(--muted);padding-left:5px}
.result-card details{max-width:none}
.record-date{font-size:11px;color:var(--muted);margin:20px 0 0}
.steps{padding-left:23px;line-height:2.1;font-size:14px;color:#3b5564}
.sync-panel{max-width:870px}
.sync-panel>label{margin-top:26px}
.import-preview{background:#f2f8f8;border:1px solid #c8dddf;padding:22px;border-radius:8px;margin-top:24px}
.import-preview dl{display:grid;grid-template-columns:1fr 1fr;gap:8px;font-size:13px;max-width:450px}
.import-preview dd{margin:0}
.history{list-style:none;margin:0;padding:0}
.history li{display:flex;gap:20px;padding:16px 0;border-bottom:1px solid var(--line);font-size:13px}
.history time{color:var(--muted);margin-left:auto}
.history small{color:var(--muted)}
#notice:empty{display:none}
#notice{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);max-width:min(90vw,700px);padding:12px 24px;border:1px solid #a9c6ce;background:#fff;color:#184a54;border-radius:8px;box-shadow:0 5px 25px #193c4b18;z-index:5;font-size:13px}
footer{padding:22px;text-align:center;font-size:11px;color:#607884;border-top:1px solid var(--line)}
.loading{text-align:center;margin:100px 0}
dialog{border:1px solid #bdd1d8;border-radius:12px;max-width:960px;width:90vw;max-height:90vh;padding:28px;color:#172d3d}
dialog::backdrop{background:#0e263b70}
.dialog-head{display:flex;justify-content:space-between;align-items:center;gap:15px}
.dialog-head h2{margin:0}
dialog>p{font-size:13px;margin-top:16px}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.account-card{border:1px dashed #8b9da6;padding:18px;break-inside:avoid;font-size:13px;overflow-wrap:anywhere}
.card-heading{font-weight:700;border-bottom:1px solid #dce5e9;padding-bottom:8px;margin-bottom:10px}
.account-card p{margin:7px 0}
.account-card code{font-size:15px;font-weight:700}
.account-card small{font-size:11px}
.account-card strong{font-weight:700}

.workspace-main,.sidebar{min-width:0}
@media(max-width:950px){main{padding:25px 3vw}
.workspace{grid-template-columns:1fr;gap:12px}
.sidebar{padding:0}
.sidebar .eyebrow,.sidebar-note{display:none}
.sidebar nav{display:flex;overflow:auto}
.nav-item{white-space:nowrap}
.login-layout{gap:28px;margin:30px auto}
.welcome h1{font-size:35px}
.login-card{padding:26px}
.student-grid{grid-template-columns:1fr}
}

@media(max-width:600px){.topbar{height:auto;min-height:78px;padding:14px 18px;gap:15px;flex-wrap:wrap}
.brand{font-size:16px}
.brand-mark{width:35px;height:40px;font-size:20px}
#identity{gap:7px;flex-wrap:wrap;font-size:11px}
.login-layout{display:block;margin:12px auto}
.welcome{padding:12px 8px 20px}
.welcome h1{font-size:30px;line-height:1.4;margin:8px 0}
.welcome h1 br{display:none}
.welcome-notes{display:none}
.welcome>p:not(.eyebrow){font-size:13px}
.login-card{padding:25px 22px}
.center-card{padding:24px}
.center-card h1{font-size:23px}
.page-title h1{font-size:25px}
.page-title{margin:18px 0}
.metrics{grid-template-columns:repeat(2,1fr);gap:10px}
.metrics>div{padding:14px 18px}
.metrics strong{font-size:26px}
.panel{padding:18px 13px}
.filters{grid-template-columns:1fr 1fr}
.bulk{gap:10px}
.check-label{width:100%}
.table-scroll table{min-width:730px}
.pagination{gap:9px;flex-wrap:wrap}
.student-summary{flex-wrap:wrap;padding:16px 20px;gap:12px}
.student-summary p{width:100%;margin:0}
.result-card{padding:22px}
.large-score{font-size:34px}
.cards{grid-template-columns:1fr}
dialog{padding:18px;width:94vw}
.history li{flex-wrap:wrap;gap:5px 14px}
.history time{margin-left:0;font-size:12px}
.import-preview dl{grid-template-columns:1.5fr 1fr}
}

@media print{@page{size:A4;margin:12mm}
body{background:white}
body>*:not(#cards-dialog){display:none!important}
#cards-dialog[open]{display:block;position:static;inset:auto;margin:0;max-width:none;width:100%;max-height:none;overflow:visible;border:0;padding:0}
#cards-dialog>*:not(#credential-cards){display:none!important}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:5mm}
.account-card{padding:12px;font-size:11px;break-inside:avoid}
.account-card code{font-size:13px}
.account-card small{font-size:10px}
#cards-dialog::backdrop{display:none}
}


.course-switch{display:flex;align-items:center;gap:22px;margin-bottom:26px;padding:20px;background:white;border:1px solid var(--line);border-radius:10px}
.course-switch label{margin:0;min-width:260px}.course-switch span{font-size:12px;color:var(--muted)}.course-create{margin-top:22px}textarea{font:inherit;border:1px solid #b9cbd4;border-radius:6px;padding:10px;resize:vertical}
@media(max-width:600px){.course-switch{display:block}.course-switch label{min-width:0}.course-switch span{display:block;margin-top:10px}}