:root{--ink:#18211f;--muted:#66706d;--line:#dce2df;--soft:#f3f6f4;--paper:#fff;--green:#1f6b55;--green2:#dceee7;--red:#b4483f;--red2:#f8e5e2;--amber:#a3691c;--amber2:#f8ecd5;--blue:#315f8a;--blue2:#e3edf7;--sidebar:#17211f}
*{box-sizing:border-box}body{margin:0;font-family:"Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#eef2f0;font-size:14px;letter-spacing:0}.app-shell{display:grid;grid-template-columns:232px 1fr;min-height:100vh}.sidebar{background:var(--sidebar);color:#f4f7f5;padding:20px 14px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:11px;padding:0 8px 20px}.brand-mark{display:grid;place-items:center;width:38px;height:38px;background:#d2a44d;color:#17211f;font:700 22px serif;border-radius:6px}.brand strong,.brand small,.sidebar-foot strong,.sidebar-foot small{display:block}.brand small,.sidebar-foot small{color:#9aaba6;margin-top:3px;font-size:11px}.campus-switch{padding:12px;background:#22302d;border:1px solid #334440;border-radius:6px;margin-bottom:18px}.campus-switch label{display:block;color:#9aaba6;font-size:11px;margin-bottom:7px}.campus-switch select{width:100%;border:0;background:transparent;color:#fff;font-weight:700;outline:0}.campus-switch option{color:#111}nav{display:grid;gap:5px}.nav-item{border:0;background:transparent;color:#bac6c2;text-align:left;padding:11px 12px;border-radius:5px;cursor:pointer;font-size:14px;display:flex;align-items:center;gap:11px}.nav-item span{width:18px;text-align:center;font-size:16px}.nav-item b{margin-left:auto;background:#344642;padding:2px 7px;border-radius:10px;font-size:11px}.nav-item .warn-badge{background:#71413a}.nav-item:hover,.nav-item.active{background:#2a3a36;color:#fff}.sidebar-foot{margin-top:auto;border-top:1px solid #33413e;padding:16px 5px 0;display:grid;grid-template-columns:34px 1fr 28px;align-items:center;gap:8px}.avatar{width:34px;height:34px;border-radius:50%;background:#d2a44d;color:#17211f;display:grid;place-items:center;font-weight:700}.sidebar-foot button{background:transparent;border:0;color:#9aaba6;cursor:pointer}main{min-width:0}.topbar{height:82px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 30px;gap:14px;position:sticky;top:0;z-index:5}.topbar h1{font-size:20px;margin:0 0 4px}.topbar p{margin:0;color:var(--muted);font-size:12px}.top-actions{margin-left:auto;display:flex;gap:9px}.primary,.ghost,.danger,.small-btn{border:1px solid transparent;border-radius:5px;padding:9px 14px;font-weight:700;cursor:pointer}.primary{background:var(--green);color:#fff}.primary:hover{background:#175642}.ghost{background:#fff;border-color:var(--line);color:var(--ink)}.danger{background:#fff;border-color:#e4bcb7;color:var(--red)}.small-btn{padding:6px 9px;background:#fff;border-color:var(--line);font-size:12px}.icon-btn{border:0;background:transparent;font-size:22px;cursor:pointer;color:var(--muted)}#menuBtn{display:none}.view{padding:24px 30px 50px;max-width:1600px;margin:auto}.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.kpi{background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:17px}.kpi .label{color:var(--muted);font-size:12px}.kpi strong{display:block;font-size:27px;margin:8px 0 5px}.kpi .delta{font-size:12px;color:var(--green)}.kpi .delta.warn{color:var(--red)}.grid-2{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(300px,.75fr);gap:16px;margin-top:16px}.panel{background:#fff;border:1px solid var(--line);border-radius:6px}.panel-head{padding:16px 18px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:10px}.panel-head h2{font-size:15px;margin:0}.panel-head p{margin:4px 0 0;color:var(--muted);font-size:12px}.panel-body{padding:16px 18px}.alert-list{display:grid;gap:10px}.alert{display:grid;grid-template-columns:10px 1fr auto;gap:10px;align-items:center;padding:11px 12px;background:var(--soft);border-radius:5px}.dot{width:8px;height:8px;border-radius:50%;background:var(--amber)}.dot.red{background:var(--red)}.dot.green{background:var(--green)}.alert strong{display:block;font-size:13px}.alert small{color:var(--muted)}.bar-row{display:grid;grid-template-columns:72px 1fr 50px;align-items:center;gap:10px;margin:14px 0}.bar{height:8px;background:#e7ece9;border-radius:4px;overflow:hidden}.bar i{display:block;height:100%;background:var(--green);border-radius:4px}.bar-row b{text-align:right}.toolbar{display:flex;gap:9px;align-items:center;margin-bottom:14px;flex-wrap:wrap}.toolbar .primary{margin-left:auto}.search,.select{height:38px;border:1px solid var(--line);border-radius:5px;background:#fff;padding:0 11px;color:var(--ink)}.search{min-width:230px}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:6px}table{width:100%;border-collapse:collapse;white-space:nowrap}th{background:#f5f7f6;color:#5c6764;font-size:12px;text-align:left;padding:11px 13px;border-bottom:1px solid var(--line)}td{padding:12px 13px;border-bottom:1px solid #edf0ee;vertical-align:middle}tbody tr:hover{background:#fafcfb}tbody tr:last-child td{border-bottom:0}.name-cell strong{display:block}.name-cell small{display:block;color:var(--muted);margin-top:3px}.tag{display:inline-block;padding:3px 7px;border-radius:4px;font-size:11px;font-weight:700}.tag.green{background:var(--green2);color:var(--green)}.tag.amber{background:var(--amber2);color:var(--amber)}.tag.red{background:var(--red2);color:var(--red)}.tag.blue{background:var(--blue2);color:var(--blue)}.muted{color:var(--muted)}.money{font-variant-numeric:tabular-nums;font-weight:700}.progress{height:6px;background:#e7ece9;width:110px;border-radius:3px;overflow:hidden;margin-top:5px}.progress i{display:block;height:100%;background:var(--green)}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.student-card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:16px}.student-card .title-row{display:flex;justify-content:space-between;align-items:start}.student-card h3{margin:0 0 3px;font-size:16px}.student-card p{margin:0;color:var(--muted);font-size:12px}.course-line{margin-top:16px;padding-top:13px;border-top:1px solid var(--line);display:flex;justify-content:space-between}.course-line strong{font-size:13px}.course-line small{display:block;color:var(--muted);margin-top:4px}.course-balance{text-align:right;font-size:19px;font-weight:700}.course-balance small{font-size:10px;font-weight:400}.empty{text-align:center;padding:50px;color:var(--muted)}.modal-backdrop{position:fixed;inset:0;background:rgba(13,22,19,.55);display:grid;place-items:center;padding:20px;z-index:20}.hidden{display:none!important}.modal{width:min(720px,100%);max-height:92vh;overflow:auto;background:#fff;border-radius:7px;box-shadow:0 24px 80px rgba(0,0,0,.28)}.modal-head{padding:18px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between}.modal-head h2{margin:0;font-size:18px}.modal-head p{margin:5px 0 0;color:var(--muted);font-size:12px}.form{padding:19px 20px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:grid;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:12px;font-weight:700}.field input,.field select,.field textarea{width:100%;border:1px solid #cfd7d3;border-radius:5px;padding:10px 11px;font:inherit;background:#fff}.field textarea{min-height:72px;resize:vertical}.form-note{background:var(--soft);border-left:3px solid var(--green);padding:12px;margin:15px 0;color:#40504c;font-size:12px}.price-summary{background:#f5f8f6;padding:14px;border-radius:5px;display:grid;gap:8px}.price-row{display:flex;justify-content:space-between}.price-row.total{border-top:1px solid var(--line);padding-top:9px;font-size:16px;font-weight:700}.form-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:18px}.toast{position:fixed;right:24px;bottom:24px;background:#15231f;color:#fff;padding:12px 16px;border-radius:5px;box-shadow:0 10px 30px rgba(0,0,0,.2);transform:translateY(90px);opacity:0;transition:.25s;z-index:30}.toast.show{transform:translateY(0);opacity:1}.split-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:14px}.mini-stat{background:#fff;border:1px solid var(--line);border-radius:6px;padding:14px}.mini-stat strong{font-size:20px;display:block;margin-top:5px}.lesson-list{display:grid;gap:8px}.lesson{display:grid;grid-template-columns:60px 1fr auto auto;align-items:center;gap:12px;border-bottom:1px solid var(--line);padding:10px 0}.lesson time{font-weight:700;color:var(--green)}
@media(max-width:1050px){.kpi-grid{grid-template-columns:repeat(2,1fr)}.cards{grid-template-columns:repeat(2,1fr)}.grid-2{grid-template-columns:1fr}}
@media(max-width:760px){.app-shell{display:block}.sidebar{position:fixed;left:-250px;z-index:15;width:232px;transition:.25s}.sidebar.open{left:0}.topbar{padding:0 15px;height:74px}.topbar .ghost{display:none}#menuBtn{display:block}.topbar h1{font-size:17px}.view{padding:16px}.kpi-grid{grid-template-columns:1fr 1fr;gap:9px}.kpi{padding:13px}.kpi strong{font-size:22px}.cards{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.search{min-width:0;flex:1}.toolbar .primary{width:100%;margin-left:0}.split-summary{grid-template-columns:1fr}.lesson{grid-template-columns:48px 1fr auto}.lesson .teacher{display:none}.top-actions .primary{padding:8px 10px;font-size:12px}}

.student-actions{display:flex;align-items:center;justify-content:flex-end;min-height:28px;margin-top:12px}.payroll-note,.commission-panel{margin:14px 0}.feedback-tags{display:flex;flex-wrap:wrap;gap:8px}.feedback-tags label{display:inline-flex;align-items:center;gap:5px;background:var(--soft);padding:8px 10px;border-radius:5px;font-weight:400}.feedback-tags input{width:auto}
.lesson-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;min-width:145px}
.student-picker{display:grid;gap:7px;margin-top:13px;max-height:420px;overflow:auto}.student-picker button{border:1px solid var(--line);border-radius:5px;background:#fff;padding:12px;text-align:left;cursor:pointer}.student-picker button:hover{border-color:var(--green);background:#f5faf7}.student-picker strong,.student-picker small{display:block}.student-picker small{margin-top:4px;color:var(--muted);font-size:12px}