:root{
  --bg:#f5f6f8; --card:#fff; --line:#e3e6ea; --text:#1f2329; --muted:#8a9099;
  --primary:#1f6feb; --primary-d:#1a5ed6; --ok:#12a05c; --warn:#d9822b; --err:#d13c3c;
  --radius:6px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);
  font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
a{color:var(--primary);text-decoration:none} a:hover{text-decoration:underline}
h1,h2,h3{margin:0 0 12px;font-weight:600}
h2{font-size:19px} h3{font-size:16px;margin-top:22px}
code{background:#eef1f4;padding:1px 5px;border-radius:3px;font-size:12.5px}
pre{background:#f3f5f7;padding:10px 12px;border-radius:var(--radius);overflow:auto;font-size:12.5px}
.muted{color:var(--muted)} .small{font-size:12.5px} .bold{font-weight:600}
.nowrap{white-space:nowrap} .right{text-align:right} .center{text-align:center}
.hide{display:none !important}

/* ---------- 布局 ---------- */
.topbar{display:flex;align-items:center;gap:16px;background:#fff;border-bottom:1px solid var(--line);
  padding:0 18px;height:52px;position:sticky;top:0;z-index:30}
.topbar .brand{font-weight:700;font-size:15px}
.topbar nav{display:flex;gap:2px;flex:1;flex-wrap:wrap}
.topbar nav a{padding:6px 11px;border-radius:var(--radius);color:var(--text);font-size:13.5px}
.topbar nav a.on{background:#eaf1fe;color:var(--primary);font-weight:600}
.topbar .who{font-size:13px;color:var(--muted)}
.page{max-width:1320px;margin:0 auto;padding:18px}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:14px}
.card h3{margin-top:0}
.grid{display:grid;gap:14px}
.grid.c2{grid-template-columns:repeat(2,1fr)} .grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.grid.c2,.grid.c3,.grid.c4{grid-template-columns:1fr}}
.cards{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.cards .card{flex:1 1 150px;margin:0;text-align:center;padding:14px 8px}
.num{font-size:24px;font-weight:700} .lbl{color:var(--muted);font-size:12.5px}
.sec{margin:24px 0 10px}

/* ---------- 表单 ---------- */
label{display:block;margin-bottom:10px;font-size:13px;color:#41474f}
label>span,label>em{display:block;margin-bottom:4px;color:var(--muted);font-style:normal;font-size:12.5px}
input,select,textarea{width:100%;padding:7px 9px;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;font:inherit;color:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}
input[type=checkbox]{width:auto}
.inline{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}
.inline>*{flex:1 1 160px}
.inline>.narrow{flex:0 0 auto;width:auto}
.btn{display:inline-block;padding:7px 14px;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;color:var(--text);cursor:pointer;font-size:13.5px;line-height:1.4;white-space:nowrap}
.btn:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-d);color:#fff}
.btn.danger{background:#fff;border-color:#eab4b4;color:var(--err)}
.btn.sm{padding:3px 9px;font-size:12.5px}
.btn.block{display:block;width:100%;margin-top:6px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btnrow{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}

/* ---------- 表格 ---------- */
.tbl{width:100%;border-collapse:collapse;background:#fff;font-size:13px}
.tbl th,.tbl td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl th{background:#fafbfc;font-weight:600;color:#41474f;white-space:nowrap}
.tbl tr:hover td{background:#fafcff}
.tbl.row-error td{background:#fdf2f2} .tbl.row-warn td{background:#fff9ee}
.tbl .num{text-align:right;font-variant-numeric:tabular-nums}
.wrap{overflow:auto;border:1px solid var(--line);border-radius:var(--radius)}
.pager{display:flex;gap:8px;align-items:center;justify-content:flex-end;margin-top:10px;font-size:13px}

/* ---------- 提示 ---------- */
.alert{padding:9px 12px;border-radius:var(--radius);margin-bottom:12px;font-size:13.5px;border:1px solid}
.alert.ok{background:#f0fbf5;border-color:#bfe8d0;color:#0d7a46}
.alert.error{background:#fdf3f3;border-color:#f0c4c4;color:#a52d2d}
.alert.warn{background:#fff8ef;border-color:#f3ddba;color:#9a5b12}
.alert.info{background:#eef4ff;border-color:#cfe0fb;color:#2b5cad}
#toast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%);z-index:200;display:flex;
  flex-direction:column;gap:8px;align-items:center;pointer-events:none}
#toast div{background:#26292e;color:#fff;padding:9px 16px;border-radius:20px;font-size:13.5px;
  box-shadow:0 4px 16px rgba(0,0,0,.18);max-width:80vw}
#toast div.err{background:#a52d2d} #toast div.ok{background:#0d7a46}

/* ---------- 弹窗 ---------- */
.mask{position:fixed;inset:0;background:rgba(20,24,30,.42);z-index:100;display:flex;
  align-items:flex-start;justify-content:center;padding:40px 16px;overflow:auto}
.dlg{background:#fff;border-radius:8px;padding:18px 20px;width:100%;max-width:660px;box-shadow:0 10px 40px rgba(0,0,0,.2)}
.dlg.wide{max-width:1000px} .dlg h3{margin-bottom:12px}
.dlg .foot{display:flex;gap:8px;justify-content:flex-end;margin-top:16px}

/* ---------- 登录 ---------- */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;background:#eef1f5;padding:20px}
.login-card{background:#fff;border-radius:10px;padding:28px 30px;width:100%;max-width:370px;
  box-shadow:0 8px 30px rgba(0,0,0,.08)}
.login-card.wide{max-width:560px}
.login-card h1{font-size:19px;text-align:center} .login-card form{margin-top:16px}

/* ---------- 阅卷台 ---------- */
.mark{display:grid;grid-template-columns:1fr 300px;gap:14px}
@media(max-width:960px){.mark{grid-template-columns:1fr}}
.mark .paper{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px;
  min-height:320px;text-align:center}
.mark .paper img{max-width:100%;border:1px solid var(--line);border-radius:4px;margin-bottom:8px}
.score-pad{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.score-pad button{padding:10px 0;border:1px solid var(--line);background:#fff;border-radius:5px;cursor:pointer;font-size:15px}
.score-pad button:hover{border-color:var(--primary);color:var(--primary)}
.score-pad button.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.side{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px}
.kv{display:flex;justify-content:space-between;padding:5px 0;border-bottom:1px dashed var(--line);font-size:13px}
.bar{height:6px;background:#eceff3;border-radius:3px;overflow:hidden;margin-top:4px}
.bar>i{display:block;height:100%;background:var(--primary)}
.tag{display:inline-block;padding:1px 7px;border-radius:10px;font-size:12px;background:#eef1f4;color:#4a5058;margin-right:4px}
.tag.ok{background:#e8f7ef;color:#0d7a46} .tag.err{background:#fdecec;color:#a52d2d}
.tag.warn{background:#fff5e6;color:#9a5b12} .tag.info{background:#eaf1fe;color:#2b5cad}
.sheet-preview{display:flex;gap:12px;flex-wrap:wrap}
.sheet-preview figure{margin:0;text-align:center}
.sheet-preview img{max-height:52vh;border:1px solid var(--line);border-radius:4px;background:#fff}
.sheet-preview figcaption{font-size:12.5px;color:var(--muted);margin-top:4px}
.overlay-box{position:absolute;border:1px solid rgba(209,60,60,.75);background:rgba(209,60,60,.08)}
.overlay-wrap{position:relative;display:inline-block}
.qrow{display:grid;grid-template-columns:64px 1fr 90px 90px;gap:8px;align-items:center;padding:6px 0;border-bottom:1px dashed var(--line)}
.dropzone{border:2px dashed var(--line);border-radius:8px;padding:22px;text-align:center;background:#fcfdff}
.dropzone.on{border-color:var(--primary);background:#eef4ff}

/* ================= 扫码登录页 ================= */
.lg-body{margin:0;min-height:100vh;background:#0b2a5b;
  background-image:radial-gradient(1200px 600px at 15% 20%,#1c4f9c 0%,rgba(28,79,156,0) 60%),
                   radial-gradient(900px 500px at 85% 80%,#123f7f 0%,rgba(18,63,127,0) 60%),
                   linear-gradient(135deg,#0a2a5b 0%,#0e3570 100%);
  font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#1f2329}
.lg-shell{display:grid;grid-template-columns:1.1fr .9fr;min-height:100vh}
@media(max-width:900px){.lg-shell{grid-template-columns:1fr}.lg-brand{display:none}}
.lg-brand{display:flex;align-items:center;justify-content:center;padding:40px;color:#eaf1ff}
.lg-brand-inner{max-width:430px}
.lg-logo{width:64px;height:64px;border-radius:16px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.25);display:flex;align-items:center;justify-content:center;
  font-size:26px;font-weight:700;letter-spacing:1px;margin-bottom:22px;color:#fff}
.lg-brand h1{font-size:30px;margin:0 0 8px;color:#fff;letter-spacing:1px}
.lg-brand p{margin:0 0 26px;color:#a9c4ea;font-size:15px}
.lg-points{list-style:none;padding:0;margin:0}
.lg-points li{position:relative;padding-left:22px;margin-bottom:12px;color:#cbdcf5;font-size:14px}
.lg-points li:before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;
  background:#5b9bff;box-shadow:0 0 0 4px rgba(91,155,255,.18)}
.lg-panel{display:flex;align-items:center;justify-content:center;padding:32px 24px;background:#f5f6f8}
@media(max-width:900px){.lg-panel{background:transparent}}
.lg-card{background:#fff;border-radius:12px;padding:26px 26px 18px;width:100%;max-width:392px;
  box-shadow:0 18px 50px rgba(6,22,48,.18)}
.lg-tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin-bottom:20px}
.lg-tab{flex:1;background:none;border:none;border-bottom:2px solid transparent;padding:10px 6px;
  font-size:14px;color:#6b7280;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px}
.lg-tab.on{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}
.lg-ico{width:15px;height:15px;display:inline-block;border-radius:3px;background:#c3cad6;flex:0 0 auto}
.lg-tab.on .lg-ico-fs{background:linear-gradient(135deg,#3370ff,#1f6feb)}
.lg-ico-dt{background:linear-gradient(135deg,#3ab0ff,#1677ff)}
.lg-ico-id{background:linear-gradient(135deg,#8a9099,#6b7280)}
.lg-qr{position:relative;width:230px;height:230px;margin:4px auto 10px;border:1px solid var(--line);
  border-radius:8px;display:flex;align-items:center;justify-content:center;background:#fff}
.lg-qr img{width:210px;height:210px;display:block;image-rendering:pixelated}
.lg-qrmask{position:absolute;inset:0;background:rgba(255,255,255,.94);border-radius:8px;
  display:flex;align-items:center;justify-content:center;text-align:center}
.lg-qrmask-inner{padding:16px}
.lg-qrmask-inner p{margin:0 0 12px;font-size:14px;color:#41474f}
.lg-tip{text-align:center;margin:12px 0 4px;font-size:14px}
.lg-sub{text-align:center;color:var(--muted);font-size:12.5px;margin:0 0 14px}
.lg-empty{text-align:center;padding:34px 10px;color:#41474f}
.lg-account{border-top:1px solid var(--line);margin-top:8px;padding-top:16px}
.lg-account .btn.block{display:flex;align-items:center;justify-content:center;gap:8px}
.lg-account form{margin-top:14px}
.lg-foot{text-align:center;margin:14px 0 0}
.center{text-align:center}