:root{--brand:#009ef7;--brand2:#006ef5;--ink:#10233d;--muted:#6b7a90;--bg:#f5f8fc;--card:#fff;--line:#e4ebf3;--ok:#13a56b;--warn:#e8a019;--danger:#df4b4b;--shadow:0 14px 40px rgba(29,73,119,.11)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}a{color:var(--brand2);text-decoration:none}button,input,select,textarea{font:inherit}.shell{max-width:1180px;margin:auto;padding:24px}.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.topinner{max-width:1180px;margin:auto;padding:12px 24px;display:flex;gap:18px;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:800}.brand img{height:34px;width:auto}.nav{display:flex;gap:8px;flex-wrap:wrap}.nav a{padding:9px 12px;border-radius:10px;color:#43526a}.nav a:hover,.nav a.active{background:#eef7ff;color:var(--brand2)}.hero{display:grid;grid-template-columns:1.35fr .9fr;gap:22px;align-items:stretch;margin-top:26px}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:22px}.hero h1{font-size:clamp(34px,5vw,64px);line-height:1.02;margin:12px 0}.eyebrow{display:inline-flex;padding:7px 10px;border-radius:999px;background:#eaf6ff;color:#087fc5;font-weight:700;font-size:13px}.muted{color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:11px 15px;font-weight:800;cursor:pointer}.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}.btn.secondary{background:#eef4fa;color:#31506f}.btn.danger{background:#fff0f0;color:#b73737}.btn.sm{padding:7px 10px;font-size:13px}.grid{display:grid;gap:16px}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.stat{padding:18px}.stat strong{font-size:30px;display:block}.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field{display:flex;flex-direction:column;gap:7px;margin-bottom:14px}.field label{font-size:13px;font-weight:800;color:#43526a}.field input,.field select,.field textarea{width:100%;border:1px solid #cfdae6;background:#fff;border-radius:12px;padding:11px 12px;outline:none}.field input:focus,.field select:focus,.field textarea:focus{border-color:#55bfff;box-shadow:0 0 0 4px rgba(0,158,247,.1)}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px}.table{width:100%;border-collapse:collapse;min-width:700px}.table th,.table td{padding:12px 13px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}.table th{background:#f8fbff;color:#5b6c82}.badge{display:inline-flex;align-items:center;padding:5px 9px;border-radius:999px;font-size:12px;font-weight:800;background:#edf2f7;color:#5b6c82}.badge.ok{background:#eafaf3;color:#0a8150}.badge.warn{background:#fff7e4;color:#9c6800}.badge.danger{background:#fff0f0;color:#b73737}.alert{padding:12px 14px;border-radius:12px;margin:0 0 14px}.alert.ok{background:#eafaf3;color:#0a8150}.alert.error{background:#fff0f0;color:#b73737}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at top right,#dff4ff,transparent 34%),var(--bg)}.login-card{width:min(460px,100%)}.login-logo{text-align:center;margin-bottom:18px}.login-logo img{height:62px;max-width:240px;object-fit:contain}.exam-wrap{max-width:1240px;margin:auto;padding:18px}.exam-head{display:flex;gap:14px;justify-content:space-between;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px 16px;position:sticky;top:12px;z-index:15;box-shadow:var(--shadow)}.timer{font-size:22px;font-weight:900;font-variant-numeric:tabular-nums}.exam-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;margin-top:18px}.question{font-size:17px;line-height:1.65;white-space:pre-wrap}.option{display:flex;gap:11px;align-items:flex-start;border:1px solid var(--line);border-radius:14px;padding:13px;margin:10px 0;cursor:pointer}.option:hover{border-color:#9fdcff;background:#f8fcff}.option input{margin-top:4px}.qnav{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.qnav a{height:42px;display:grid;place-items:center;border-radius:10px;background:#eef2f7;color:#45566d;font-weight:800}.qnav a.answered{background:#e8f8f1;color:#0a8150}.qnav a.active{outline:3px solid rgba(0,158,247,.25);background:#eaf6ff;color:#087fc5}.save-state{font-size:12px;color:var(--muted)}.split-actions{display:flex;justify-content:space-between;gap:10px;margin-top:18px}.footer-note{text-align:center;color:var(--muted);font-size:12px;padding:24px}.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#eff4f8;padding:2px 6px;border-radius:6px}.progress{height:9px;background:#e8eef5;border-radius:999px;overflow:hidden}.progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2))}@media(max-width:820px){.hero,.exam-grid,.grid.cols-2,.grid.cols-3,.form-row{grid-template-columns:1fr}.topinner{align-items:flex-start;flex-direction:column}.nav{width:100%;overflow:auto;flex-wrap:nowrap}.exam-head{position:static}.exam-grid aside{order:-1}.qnav{grid-template-columns:repeat(8,1fr)}}@media(max-width:520px){.shell,.exam-wrap{padding:12px}.card{padding:16px}.qnav{grid-template-columns:repeat(5,1fr)}.exam-head{align-items:flex-start;flex-direction:column}.btn{width:100%}}

/* v0.2 school operations */
.scopebar{max-width:1180px;margin:auto;padding:0 24px 10px;display:flex;justify-content:flex-end}.scopebar form{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}.scopebar select,.section-head select,.inline-form select,.inline-form input,.table select,.table input{border:1px solid #cfdae6;border-radius:9px;padding:7px 9px;background:#fff}.school-context{display:flex;gap:8px;align-items:center;margin-bottom:14px;font-size:13px}.dashboard-head,.section-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}.dashboard-head h1,.section-head h1{margin:8px 0}.quick-actions,.actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.check{display:flex;gap:8px;align-items:center;margin:9px 0}.flow-list{display:grid;gap:10px}.flow-list>div{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid var(--line);border-radius:12px;font-weight:900;color:var(--brand2)}.flow-list>div span{font-weight:600;color:var(--ink)}.inline-form{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-top:6px}.sep{border:0;border-top:1px solid var(--line);margin:18px 0}.tiny{font-size:12px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums}.option-editor{display:grid;grid-template-columns:36px 1fr;gap:8px;align-items:center;margin-bottom:8px}.question-preview{border-bottom:1px solid var(--line);padding:14px 0}.stimulus{border:1px solid #cfe7f7;background:#f6fbff;border-radius:16px;padding:16px;margin:18px 0}.stimulus.mini{padding:12px}.stimulus img{display:block;max-width:100%;max-height:420px;object-fit:contain;margin:12px auto;border-radius:12px}.stimulus-table{width:100%;border-collapse:collapse;margin-top:12px}.stimulus-table th,.stimulus-table td{border:1px solid #cfdce8;padding:9px;text-align:left;background:#fff}.stimulus-table th{background:#eaf6ff}.school-logo-preview{height:70px;max-width:220px;object-fit:contain;display:block;margin-top:8px}.hierarchy{display:grid;place-items:center;gap:8px}.hierarchy>div{width:100%;padding:14px;border:1px solid var(--line);border-radius:14px;text-align:center}.hierarchy small{display:block;color:var(--muted);margin-top:4px}.hierarchy>span{font-size:22px;color:var(--brand)}.chip-list{display:flex;gap:7px;flex-wrap:wrap;margin-top:14px}.chip{background:#eef7ff;color:#2176a9;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:700}.exam-meta{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.exam-meta span{background:#f4f7fb;border-radius:9px;padding:7px 9px;font-size:12px}.monitor-tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:16px}.monitor-tile{background:#fff;border:2px solid var(--line);border-radius:14px;padding:13px;display:grid;grid-template-columns:1fr auto;gap:6px;align-items:center}.monitor-tile small{display:block;color:var(--muted);margin-top:3px}.monitor-tile>span{grid-column:1/-1;font-size:11px;font-weight:900}.monitor-tile.active{border-color:#70d9ac}.monitor-tile.idle{border-color:#f1a4a4}.monitor-tile.submitted{background:#f0fbf6}.monitor-tile.not_login{background:#fffaf0}.invigilator-page{background:#eef3f8}.inv-head{background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}.inv-head>div:first-child{display:flex;gap:12px;align-items:center}.inv-head img{height:38px}.inv-head small{display:block;color:var(--muted)}.inv-shell{max-width:1500px;margin:auto;padding:20px}.print-page,.certificate-body{background:#f0f3f6}.print-toolbar{position:sticky;top:0;z-index:99;padding:12px;display:flex;gap:8px;justify-content:center;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line)}.cards-sheet{max-width:1100px;margin:20px auto;display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.participant-card{background:#fff;border:1px solid #cbd7e4;border-radius:14px;padding:16px;break-inside:avoid}.card-brand{display:flex;gap:12px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:10px}.card-brand img{width:64px;height:44px;object-fit:contain}.card-brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:.12em}.participant-card h3{font-size:15px}.participant-card dl{display:grid;grid-template-columns:110px 1fr;gap:5px 10px;font-size:12px}.participant-card dt{color:var(--muted)}.participant-card dd{margin:0}.card-url{text-align:right;font-size:10px;color:var(--muted);margin-top:10px}.certificate-page{width:297mm;height:210mm;margin:10mm auto;background:#fff;padding:12mm;page-break-after:always;box-shadow:0 8px 25px rgba(0,0,0,.12)}.certificate-border{height:100%;border:5px double #1b7fba;padding:10mm 14mm;position:relative;text-align:center}.certificate-top{border-bottom:1px solid #b8cfde;padding-bottom:8px}.cert-school-logo{height:20mm;max-width:55mm;object-fit:contain}.cert-school{font-size:18px;font-weight:900}.cert-address{font-size:11px;color:#5e6c7b}.cert-title{font-size:28px;font-weight:1000;letter-spacing:.07em;margin-top:12px}.cert-no{font-size:11px;color:#627389}.cert-text{font-size:15px;margin:12px auto;max-width:220mm;line-height:1.5}.cert-name{font-family:Georgia,serif;font-size:34px;font-weight:700;border-bottom:1px solid #a9bac6;display:inline-block;padding:0 20px 4px}.cert-meta{font-size:12px;color:#687688;margin-top:5px}.cert-score{font-size:54px;font-weight:1000;color:#087fc5}.cert-score small{font-size:16px;color:#687688}.cert-status{display:inline-block;padding:7px 18px;border-radius:999px;font-weight:900;font-size:12px}.cert-status.pass{background:#eafaf3;color:#0a8150}.cert-status.fail{background:#fff0f0;color:#b73737}.cert-sign{display:flex;justify-content:flex-end;text-align:center;margin-top:10px;font-size:12px}.sign-space{height:20mm}.cert-footer{position:absolute;left:14mm;right:14mm;bottom:8mm;display:flex;align-items:center;justify-content:center;gap:8px;font-size:9px;color:#768596}.cert-footer img{height:8mm}
@media(max-width:1000px){.grid.cols-4,.monitor-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.cards-sheet{grid-template-columns:1fr}}@media(max-width:650px){.grid.cols-4,.monitor-tiles{grid-template-columns:1fr}.scopebar{justify-content:flex-start}.dashboard-head{align-items:flex-start}.certificate-page{width:100%;height:auto;margin:0;padding:8px}.cards-sheet{margin:10px}.print-toolbar{position:static}}@media print{.print-toolbar{display:none!important}.print-page,.certificate-body{background:#fff}.cards-sheet{margin:0;gap:8mm;grid-template-columns:repeat(2,1fr)}.participant-card{box-shadow:none}.certificate-page{margin:0;box-shadow:none;page-break-after:always}@page{size:A4 landscape;margin:0}}