:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:#182538;background:#f4f6fa;font-size:15px;line-height:1.6;--blue:#325dcc;--border:#dfe5ef;--muted:#69788c}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0}header{height:82px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1120px)/2));gap:16px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;font-size:22px;font-weight:700;white-space:nowrap}.brand small{display:block;font-size:11px;font-weight:500;letter-spacing:2px;color:var(--muted)}.mark{background:linear-gradient(135deg,#3554c8,#9878de);width:43px;height:43px;border-radius:13px;color:#fff;font-family:Georgia,serif;font-size:42px;line-height:38px;text-align:center}.session{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);min-width:0}.session span{overflow-wrap:anywhere}main{max-width:1120px;margin:0 auto;padding:40px 24px 80px;min-height:calc(100vh - 145px)}h1{font-size:30px;letter-spacing:-.6px;margin:0 0 9px;line-height:1.35}h2{font-size:19px;margin:0}p{margin:8px 0 18px}.eyebrow{font-size:10px;font-weight:800;letter-spacing:2px;color:#6b7ca2;margin:0 0 12px}.muted{color:var(--muted);font-size:14px}.hint{color:var(--muted);font-size:12px;margin-top:15px}.gate{max-width:460px;background:#fff;border:1px solid var(--border);border-radius:20px;padding:36px;margin:38px auto;box-shadow:0 12px 45px #1c2d4a08}.gate h1{font-size:27px}label{display:block;font-weight:600;font-size:13px;margin:17px 0 5px}input,select{display:block;width:100%;margin-top:7px;background:#fff;border:1px solid #ccd5e3;border-radius:9px;padding:11px 12px;font:inherit;color:inherit;min-height:44px}button{font:inherit;font-weight:600;font-size:13px;background:#fff;color:#3c4e68;border:1px solid #d5deea;border-radius:9px;padding:10px 16px;cursor:pointer;min-height:42px;transition:background .15s}button:hover{background:#f0f4fc}button:disabled{opacity:.5;cursor:wait}button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}button.primary:hover{background:#244db8}.gate form>.primary{width:100%;margin-top:24px}.quiet{border-color:transparent;background:transparent;padding:6px 9px}.danger{color:#b23b45;border-color:#eccbd0}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:10px 0 28px}.secure-badge,.chip{display:inline-block;background:#e8f2ed;color:#367153;padding:5px 11px;border-radius:6px;font-size:11px;font-weight:600}.chip{background:#eef2fa;color:#516789;margin:3px 5px 3px 0}.chip.inactive{background:#f0f1f3;color:#7b8491}nav{display:flex;gap:6px;border-bottom:1px solid var(--border);margin-bottom:28px;padding-bottom:10px;overflow-x:auto}nav button{border:0;background:none;white-space:nowrap}nav button[aria-current]{color:var(--blue);background:#e9eefb}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:12px 0 18px}.section-heading p{margin:4px 0 0;font-size:12px}.search{display:flex;gap:10px;margin:15px 0 24px;max-width:500px}.search input{margin:0;flex:1;min-width:0}.account-list{display:grid;gap:12px}.account-card{background:white;border:1px solid var(--border);border-radius:13px;padding:22px;display:flex;justify-content:space-between;align-items:center;gap:20px}.account-card h3{font-size:15px;margin:0 0 6px;overflow-wrap:anywhere}.account-card p{font-size:12px;color:var(--muted);margin:0}.card-actions{display:flex;gap:8px;flex-shrink:0}.pagination{display:flex;align-items:center;justify-content:center;gap:20px;margin-top:25px;font-size:12px;color:var(--muted)}.subject-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.subject-card{background:#fff;border:1px solid var(--border);padding:24px;border-radius:14px;min-width:0}.subject-card h3{font-size:17px;margin:0 0 14px}.subject-card p{font-size:12px;overflow-wrap:anywhere;margin:8px 0}.notice{background:#eef2ff;color:#304b91;border:1px solid #cfd9fa;border-radius:10px;padding:12px 16px;margin:0 0 20px;font-size:13px}.notice.error{background:#fff0f0;color:#a83f48;border-color:#efcdd1}.empty{padding:45px 20px;text-align:center;color:var(--muted);background:#fff;border:1px dashed var(--border);border-radius:12px}dialog{border:1px solid var(--border);border-radius:17px;width:480px;max-width:calc(100vw - 28px);padding:28px;box-shadow:0 24px 100px #18253833}dialog::backdrop{background:#17263e66;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.actions{display:flex;gap:10px;justify-content:flex-end;margin-top:24px;flex-wrap:wrap}.form-message{font-size:12px;color:#a83f48;margin:12px 0 0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}#qrImage{display:block;max-width:100%;height:auto;margin:20px auto;background:#fff}footer{text-align:center;color:#8792a4;font-size:11px;padding:18px}a{color:var(--blue)}:focus-visible{outline:3px solid #91b0ff;outline-offset:3px}@media(max-width:650px){header{height:74px;padding:0 18px}.brand{font-size:19px}.session{max-width:45%;font-size:10px;gap:3px}.mark{width:36px;height:36px;font-size:35px;line-height:32px}.brand small{font-size:9px;letter-spacing:1px}main{padding:25px 16px 50px}.gate{padding:26px 22px;margin:20px auto}h1{font-size:25px}.page-heading{display:block}.secure-badge{margin-top:8px}.account-card{align-items:flex-start;flex-direction:column;padding:18px;gap:14px}.card-actions{width:100%;justify-content:flex-end}.subject-list{grid-template-columns:1fr}.section-heading{align-items:flex-start}.section-heading>.primary{white-space:nowrap;padding:9px 12px}.pagination{gap:12px}.account-card h3{font-size:14px}dialog{padding:22px}}