:root{
  --primary:#2563eb; --primary-d:#1d4ed8;
  --bg:#f4f6fb; --panel:#fff; --border:#e6e9f0;
  --text:#1f2733; --muted:#7a8499;
  --side:#0f1f3d;
  --orange:#ea580c; --green:#16a34a;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
body{font-family:-apple-system,'Segoe UI',Roboto,'PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}
.app{display:flex;height:100vh;overflow:hidden}

/* sidebar */
.sidebar{width:236px;background:var(--side);color:#aeb9d4;display:flex;flex-direction:column;flex-shrink:0}
.brand{padding:18px 20px;display:flex;align-items:center;gap:12px;border-bottom:1px solid rgba(255,255,255,.07)}
.logo{width:34px;height:34px;border-radius:9px;background:var(--primary);color:#fff;font-weight:700;font-size:18px;display:flex;align-items:center;justify-content:center}
.brand-name{color:#fff;font-size:16px;font-weight:600}
.brand-sub{font-size:11px;color:#7e8aa8}
.nav{padding:12px 10px;flex:1;overflow:auto}
.nav-item{display:flex;align-items:center;gap:11px;padding:11px 14px;border-radius:9px;color:#aeb9d4;cursor:pointer;margin-bottom:4px;font-size:14px;transition:.15s}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:var(--primary);color:#fff}
.nav-ic{display:flex}
.side-foot{padding:14px 20px;font-size:11px;color:#5b678a;border-top:1px solid rgba(255,255,255,.07)}

/* main */
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{height:60px;background:var(--panel);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 22px;flex-shrink:0}
.topbar-left .page-title{font-size:16px;font-weight:600}
.crumb{font-size:11px;color:var(--muted)}
.topbar-right{display:flex;align-items:center;gap:12px}
.school-switch{border:1px solid var(--border);border-radius:8px;padding:7px 10px;background:#fff;color:var(--text);font-size:13px;cursor:pointer}
.seg{display:flex;background:#eef1f7;border-radius:8px;padding:3px}
.seg-btn{border:none;background:transparent;padding:6px 12px;border-radius:6px;cursor:pointer;font-size:13px;color:var(--muted)}
.seg-btn.on{background:#fff;color:var(--primary);font-weight:600;box-shadow:0 1px 2px rgba(0,0,0,.06)}
.btn{border:1px solid var(--border);background:#fff;color:var(--text);padding:8px 14px;border-radius:8px;cursor:pointer;font-size:13px;transition:.15s}
.btn:hover{border-color:#c9d0de}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-d)}
.btn-sm{padding:5px 10px;font-size:12px}
.open-new{flex:1}
.user{display:flex;align-items:center;gap:8px}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--side);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px}
.user-name{font-size:13px}
.content{flex:1;overflow:auto;padding:24px}
.page{max-width:1100px;margin:0 auto}

.welcome{background:#eef4ff;border:1px solid #dbe7ff;color:#1d4ed8;padding:12px 16px;border-radius:10px;font-size:14px;margin-bottom:18px}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:22px}
.stat-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px}
.stat-val{font-size:26px;font-weight:700;color:var(--text)}
.stat-unit{font-size:13px;color:var(--muted);margin-left:4px;font-weight:400}
.stat-label{color:var(--muted);font-size:13px;margin-top:4px}
.section-title{font-size:14px;font-weight:600;margin:6px 0 12px}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.quick-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px;cursor:pointer;transition:.15s}
.quick-card:hover{border-color:var(--primary);transform:translateY(-2px)}
.quick-ic{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.quick-name{font-weight:600;font-size:14px}
.quick-desc{color:var(--muted);font-size:12px;margin-top:4px}
.tip{margin-top:20px;background:#fff8eb;border:1px solid #fde9bf;color:#8a5a00;padding:12px 16px;border-radius:10px;font-size:13px}

/* module */
.mod-head h2{font-size:18px}
.mod-head p{color:var(--muted);font-size:13px;margin-top:3px}
.toolbar{display:flex;align-items:center;gap:14px;margin:16px 0 12px;flex-wrap:wrap}
.muted{color:var(--muted);font-size:13px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:6px 4px;overflow:hidden}
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th{text-align:left;color:var(--muted);font-weight:500;padding:12px 16px;border-bottom:1px solid var(--border);background:#fafbfe}
.tbl td{padding:12px 16px;border-bottom:1px solid #f1f3f8}
.tbl tr:last-child td{border-bottom:none}
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:500}
.placeholder-note{margin-top:14px;color:var(--muted);font-size:12px;background:#f7f8fb;border:1px dashed var(--border);padding:12px 14px;border-radius:10px}

/* lesson ai */
.ai-box{border:1px solid var(--border);border-radius:12px;padding:16px;margin:0 4px}
.ai-title{font-weight:600;margin-bottom:10px}
.ai-row{display:flex;gap:10px}
.ai-row .inp{flex:1}
.ai-hint{color:var(--muted);font-size:12px;margin-top:8px}

/* placeholder */
.ph-title{font-weight:600;padding:14px 16px 0}
.ph-list{padding:8px 16px 16px 34px}
.ph-list li{margin:6px 0;color:#46506a}

/* ===== 报名缴费：桌面表格 / 手机卡片 双布局 ===== */
.enroll-cards{display:none}
.course-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:16px;margin-bottom:12px;cursor:pointer;transition:.15s}
.course-card:active{transform:scale(.99)}
.course-card .cc-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.course-card .cc-name{font-size:16px;font-weight:700}
.course-card .cc-teacher{color:var(--muted);font-size:13px;margin-top:3px}
.course-card .cc-fee{font-size:20px;font-weight:800;color:var(--orange);white-space:nowrap}
.course-card .cc-fee.free{color:var(--green)}
.course-card .cc-bar{height:7px;background:#eef1f7;border-radius:5px;margin:12px 0 8px;overflow:hidden}
.course-card .cc-bar>i{display:block;height:100%;background:var(--primary);border-radius:5px}
.course-card .cc-foot{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}
.course-card .cc-btn{background:var(--primary);color:#fff;border:none;border-radius:9px;padding:9px 16px;font-size:14px;font-weight:600}
.course-card.full .cc-btn{background:#cbd2e0;color:#fff}

/* ===== 报名流程全屏弹层 ===== */
.flow{display:flex;flex-direction:column;height:100%}
.flow-head{padding:18px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px}
.flow-head .fh-back{font-size:22px;cursor:pointer;color:var(--muted);line-height:1}
.flow-head .fh-title{font-size:17px;font-weight:700}
.flow-body{flex:1;overflow:auto;padding:20px}
.flow-foot{padding:14px 20px;border-top:1px solid var(--border);background:#fafbfe}
.flow-foot .btn{width:100%;padding:13px;font-size:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;font-weight:500}
.field .inp{width:100%;border:1px solid var(--border);border-radius:10px;padding:13px 14px;font-size:16px;color:var(--text);background:#fff}
.field .inp:focus{outline:none;border-color:var(--primary)}
.course-summary{background:#f6f8fe;border:1px solid #e3ebff;border-radius:12px;padding:16px;margin-bottom:18px}
.course-summary .cs-name{font-size:18px;font-weight:700}
.course-summary .cs-row{display:flex;justify-content:space-between;margin-top:8px;font-size:14px;color:#46506a}
.course-summary .cs-fee{color:var(--orange);font-weight:700;font-size:18px}

/* 支付遮罩 */
.paying{position:fixed;inset:0;background:#fff;z-index:80;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:24px;text-align:center}
.paying .spinner{width:54px;height:54px;border:5px solid #e3e8f3;border-top-color:var(--primary);border-radius:50%;animation:spin .9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.paying .ptxt{font-size:15px;color:#46506a}
.paying .psub{font-size:13px;color:var(--muted)}

/* 电子凭证 */
.voucher{max-width:420px;margin:0 auto;background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 10px 40px rgba(0,0,0,.12)}
.voucher .v-top{background:linear-gradient(135deg,#1d4ed8,#2563eb);color:#fff;padding:22px;text-align:center;position:relative}
.voucher .v-check{width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;margin:0 auto 10px;font-size:26px}
.voucher .v-status{font-size:18px;font-weight:700}
.voucher .v-amt{font-size:34px;font-weight:800;margin-top:6px}
.voucher .v-amt small{font-size:16px;font-weight:600}
.voucher .v-body{padding:20px}
.voucher .v-row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid #f1f3f8;font-size:14px}
.voucher .v-row:last-child{border-bottom:none}
.voucher .v-row .k{color:var(--muted)}
.voucher .v-row .v{font-weight:600;text-align:right;max-width:60%}
.voucher .v-qr{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px 0;border-top:1px dashed var(--border);margin-top:6px}
.voucher .v-stamp{color:#dc2626;border:2px solid #dc2626;border-radius:8px;padding:6px 14px;font-weight:800;font-size:16px;transform:rotate(-12deg);display:inline-block;opacity:.85}
.voucher .v-tip{text-align:center;color:var(--muted);font-size:12px;padding:0 20px 20px}

/* modal */
.modal-overlay{position:fixed;inset:0;background:rgba(15,23,42,.45);display:flex;align-items:center;justify-content:center;z-index:50}
.modal{background:#fff;width:420px;max-width:92vw;border-radius:14px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.modal-head{padding:16px 20px;font-size:15px;font-weight:600;border-bottom:1px solid var(--border)}
.modal-body{padding:18px 20px;max-height:60vh;overflow:auto}
.modal-body label{display:block;font-size:12px;color:var(--muted);margin:12px 0 5px}
.modal-body label:first-child{margin-top:0}
.inp{width:100%;border:1px solid var(--border);border-radius:8px;padding:9px 11px;font-size:13px;color:var(--text)}
.modal-foot{padding:14px 20px;display:flex;justify-content:flex-end;gap:10px;border-top:1px solid var(--border)}

/* toast */
.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);background:#0f1f3d;color:#fff;padding:11px 20px;border-radius:10px;font-size:13px;opacity:0;pointer-events:none;transition:.25s;z-index:90}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== 底部 Tab 栏（手机端显示） ===== */
.tabbar{display:none}

/* ===================== 响应式：手机优先 ===================== */
@media (max-width: 900px){
  .app{flex-direction:column;height:auto;min-height:100vh;overflow:visible}
  .sidebar{display:none}
  .main{height:auto;min-height:100vh}
  .topbar{height:auto;flex-direction:column;align-items:stretch;padding:10px 14px;gap:8px}
  .topbar-left{display:flex;align-items:center;gap:10px}
  .topbar-left .page-title{font-size:16px}
  .crumb{display:none}
  .topbar-right{flex-wrap:wrap;gap:8px;width:100%}
  .school-switch{flex:1;min-width:110px;padding:9px 10px;font-size:14px}
  .seg{flex:1}
  .seg-btn{flex:1;padding:9px 6px;font-size:14px}
  .open-new{flex:1;padding:10px}
  .user{display:none}
  .content{padding:14px 14px 80px;overflow:visible;flex:1}
  .page{max-width:100%}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .stat-card{padding:14px}
  .stat-val{font-size:22px}
  .stat-label{font-size:12px}
  .quick-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .quick-card{padding:14px}
  .quick-desc{display:none}
  .quick-ic{width:36px;height:36px}

  /* enroll：桌面表格隐藏，手机卡片显示 */
  .enroll-table{display:none}
  .enroll-cards{display:block}
  .toolbar .btn-primary{order:-1;flex:1}

  /* 全屏弹层 */
  .modal-overlay{align-items:stretch;background:#fff;padding:0}
  .modal{width:100vw;max-width:100vw;height:100vh;border-radius:0;display:flex;flex-direction:column}
  .modal-head{flex-shrink:0}
  .modal-body{flex:1;max-height:none}
  .modal-foot{flex-shrink:0}

  /* 底部 Tab */
  .tabbar{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--border);
    box-shadow:0 -2px 12px rgba(0,0,0,.06);z-index:40;padding:6px 4px;padding-bottom:calc(6px + env(safe-area-inset-bottom))}
  .tabbar .tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 2px;cursor:pointer;color:var(--muted);font-size:11px}
  .tabbar .tab.on{color:var(--primary)}
  .tabbar .tab svg{width:22px;height:22px}

  /* 列表表格 → 手机卡片（不再横滑/挤压，每行变成一张可读卡片） */
  .tbl:not(.tt-table) thead{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
  .tbl:not(.tt-table),.tbl:not(.tt-table) tbody,.tbl:not(.tt-table) tr,.tbl:not(.tt-table) td{display:block;width:100%}
  .tbl:not(.tt-table) tr{border:1px solid var(--border);border-radius:12px;margin-bottom:10px;background:#fff;padding:2px 0}
  .tbl:not(.tt-table) td{border:none;padding:10px 14px;display:flex;justify-content:space-between;align-items:center;gap:14px;text-align:right}
  .tbl:not(.tt-table) td::before{content:attr(data-label);color:var(--muted);font-size:12px;font-weight:500;text-align:left;flex-shrink:0}
  .tbl:not(.tt-table) td:last-child{border-top:1px dashed var(--border)}
}
@media (max-width: 380px){
  .tabbar .tab{font-size:10px}
}

/* ===== 阶段2：后勤子模块切换 ===== */
.logi-tabs{display:flex;gap:8px;margin:16px 0 12px;flex-wrap:wrap}
.logi-tab{border:1px solid var(--border);background:#fff;border-radius:8px;padding:8px 14px;cursor:pointer;font-size:13px;color:var(--muted)}
.logi-tab.on{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.asset-cards{display:none}
.asset-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:10px}
.asset-card .ac-top{display:flex;justify-content:space-between;align-items:center;gap:10px}
.asset-card .ac-name{font-weight:700;font-size:15px}
.asset-card .ac-code{color:var(--muted);font-size:12px;margin-top:4px}
.asset-card .ac-row{display:flex;gap:14px;margin-top:8px;font-size:13px;color:#46506a;flex-wrap:wrap}
.status-dot{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;font-weight:500}
.s-using{color:#15803d;background:#dcfce7}
.s-repair{color:#b45309;background:#fef3c7}
.s-fixing{color:#1d4ed8;background:#dbeafe}
.apply-form{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-end;margin-bottom:14px}
.apply-form .field{margin-bottom:0}
.apply-form .inp{width:auto;min-width:110px}

/* ===== 备课：AI 生成结果 ===== */
.lesson-out{background:#fff;border:1px solid var(--border);border-radius:12px;padding:20px;margin-top:16px;font-size:14px;line-height:1.85;white-space:pre-wrap;word-break:break-word;max-height:60vh;overflow:auto}
.lesson-out h3,.lesson-out h4{margin:14px 0 6px;color:var(--primary)}
.lesson-loading{display:flex;align-items:center;gap:12px;color:var(--muted);margin-top:16px;font-size:13px}
.lesson-loading .spinner{width:22px;height:22px;border:3px solid #e3e8f3;border-top-color:var(--primary);border-radius:50%;animation:spin .9s linear infinite}

/* ===== 备课：我的教案列表 ===== */
.lesson-list{display:flex;flex-direction:column;gap:10px;padding:10px 6px}
.lesson-item{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:12px 14px;cursor:pointer;transition:.15s}
.lesson-item:hover{border-color:var(--primary)}
.li-main{min-width:0;flex:1}
.li-top{font-size:14px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.li-grade{font-size:12px;color:#7c3aed;background:#ede9fe;padding:2px 8px;border-radius:20px;font-weight:500}
.li-sub{color:var(--muted);font-size:12px;margin-top:4px}
.li-actions{display:flex;gap:6px;flex-shrink:0}
.li-actions .btn-sm{padding:5px 9px}

/* ===== 支付二维码弹层 ===== */
.pay-qr{text-align:center;padding:10px 0}
.pay-qr .pq-amt{font-size:30px;font-weight:800;color:var(--orange);margin:6px 0}
.pay-qr .pq-amt small{font-size:15px;font-weight:600}
.pay-qr #qrcode{display:inline-block;padding:14px;background:#fff;border:1px solid var(--border);border-radius:14px;margin:14px 0}
.pay-qr #qrcode img,.pay-qr #qrcode canvas{display:block}
.pay-qr .pq-tip{color:#46506a;font-size:14px;font-weight:600}
.pay-qr .pq-sub{color:var(--muted);font-size:12px;margin-top:6px}
.pay-qr .pq-status{margin-top:14px;font-size:14px;font-weight:600}
.pay-qr .pq-status.ok{color:var(--green)}
.pay-qr .pq-count{color:var(--muted);font-size:12px;margin-top:4px}

/* ===== 系统设置：支付/AI 配置 ===== */
.cfg-sec{border:1px solid var(--border);border-radius:12px;padding:18px;margin-bottom:16px}
.cfg-sec h3{font-size:15px;margin-bottom:4px}
.cfg-sec .sub{color:var(--muted);font-size:12px;margin-bottom:12px}
.cfg-row{display:flex;align-items:center;gap:10px;margin:12px 0;flex-wrap:wrap}
.cfg-radio{display:flex;gap:8px;flex-wrap:wrap}
.cfg-radio-btn{border:1px solid var(--border);border-radius:8px;padding:9px 16px;cursor:pointer;font-size:13px;color:var(--muted);background:#fff}
.cfg-radio-btn.on{background:#eef4ff;border-color:var(--primary);color:var(--primary);font-weight:600}
.cfg-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cfg-grid .field{margin-bottom:0}
.cfg-note{color:var(--muted);font-size:12px;background:#f7f8fb;border:1px dashed var(--border);padding:10px 12px;border-radius:10px;margin-top:8px}
.mode-badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600;margin-left:8px}
.mode-badge.yipay{color:#15803d;background:#dcfce7}
.mode-badge.demo{color:#b45309;background:#fef3c7}
.mode-badge.set{color:#1d4ed8;background:#dbeafe}

@media (max-width: 900px){
  .asset-table{display:none}
  .asset-cards{display:block}
  .logi-tabs .logi-tab{flex:1;text-align:center;padding:9px 6px}
  .apply-form .inp{min-width:0;flex:1;width:100%}
  .cfg-grid{grid-template-columns:1fr}
  .cfg-radio{width:100%}
  .cfg-radio-btn{flex:1;text-align:center}
}

/* ===== 阶段3：收款订单 / 渠道业绩 / 排课 / 家长报名 ===== */
.tt-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-top:4px}
.tt-table .tt-period{white-space:nowrap;color:var(--muted);font-size:12px;font-weight:600;width:96px}
.tt-table .tt-cell{text-align:center;font-weight:500;min-width:72px;padding:10px 6px}
.tt-table tbody tr:nth-child(odd) .tt-cell{background:#fafbff}
.tt-table tbody tr:nth-child(even) .tt-cell{background:#fff}

.mo-list{margin-top:12px;display:flex;flex-direction:column;gap:10px}
.mo-item{border:1px solid var(--border);border-radius:10px;padding:12px 14px;background:#fff}
.mo-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.mo-sub{font-size:12px;color:var(--muted);margin-top:5px}

.ph-title{font-size:14px;font-weight:600;margin:4px 0 12px}

/* ===== 登录 ===== */
.login-wrap{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1f2733,#2563eb);padding:20px}
.login-card{width:340px;max-width:92vw;background:#fff;border-radius:16px;padding:28px 24px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.login-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.login-brand .logo{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700}
.brand-name{font-size:18px;font-weight:700}
.brand-sub{font-size:12px;color:var(--muted)}
.login-title{font-size:20px;font-weight:700;margin:6px 0 16px}
.login-btn{width:100%;margin-top:6px;padding:11px}
.login-demo{margin-top:16px;font-size:12px;color:var(--muted);line-height:1.7;background:#f8fafc;border:1px solid var(--border);border-radius:10px;padding:10px 12px}
.kv{display:flex;justify-content:space-between;padding:10px 2px;border-bottom:1px solid var(--border);font-size:14px}
.kv:last-child{border-bottom:none}
.kv span{color:var(--muted)}

@media (max-width: 520px){
  .lesson-item{flex-wrap:wrap}
  .li-actions{width:100%;justify-content:flex-end}
}