:root{--primary: #e53935;--primary-dark: #c62828;--bg: #f5f5f5;--card: #ffffff;--text: #212121;--text-secondary: #757575;--border: #e0e0e0;--radius: 12px;--shadow: 0 2px 12px rgba(0, 0, 0, .08)}*{box-sizing:border-box;margin:0;padding:0}html,body,#app{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.page{min-height:100%;max-width:480px;margin:0 auto;padding:16px 16px 32px}.page-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.page-header h1{font-size:20px;font-weight:600}.back-btn{background:none;border:none;font-size:24px;cursor:pointer;color:var(--text);padding:4px}.card{background:var(--card);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);margin-bottom:12px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border:none;border-radius:8px;font-size:16px;font-weight:500;cursor:pointer;transition:opacity .2s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff;width:100%}.btn-primary:active{background:var(--primary-dark)}.btn-outline{background:transparent;border:1px solid var(--primary);color:var(--primary)}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:14px;color:var(--text-secondary);margin-bottom:6px}.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px;border:1px solid var(--border);border-radius:8px;font-size:16px;background:#fff}.form-group textarea{min-height:80px;resize:vertical}.error-msg{color:var(--primary);font-size:14px;margin-top:8px}.empty-state{text-align:center;padding:48px 16px;color:var(--text-secondary)}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.stat-value{font-size:28px;font-weight:700;color:var(--primary)}.stat-label{font-size:13px;color:var(--text-secondary);margin-top:4px}:root{--parent-bg: #f7f5f3;--parent-card: #ffffff;--parent-text: #1f2937;--parent-text-secondary: #5c6570;--parent-text-muted: #8b939e;--parent-brand: #c84c4c;--parent-brand-light: #e87373;--parent-brand-soft: #fdf0ef;--parent-brand-gradient: linear-gradient(145deg, #d45858 0%, #c04545 100%);--parent-success: #2e9e6a;--parent-success-soft: #e8f6ef;--parent-warning: #d97706;--parent-warning-soft: #fef3e2;--parent-info: #2563eb;--parent-info-soft: #eff6ff;--parent-processing: #7c3aed;--parent-processing-soft: #f3e8ff;--parent-neutral: #6b7280;--parent-neutral-soft: #f3f4f6;--parent-danger: #dc2626;--parent-danger-soft: #fef2f2;--parent-radius-sm: 10px;--parent-radius-md: 14px;--parent-radius-lg: 18px;--parent-shadow: 0 2px 12px rgba(31, 41, 55, .06);--parent-shadow-soft: 0 1px 4px rgba(31, 41, 55, .04);--parent-page-x: 16px;--parent-nav-height: 56px;--parent-touch-min: 44px}.parent-shell{min-height:100%;max-width:480px;margin:0 auto;background:var(--parent-bg);color:var(--parent-text)}.parent-main{padding:12px var(--parent-page-x) calc(var(--parent-nav-height) + env(safe-area-inset-bottom,0px) + 16px)}.parent-card{background:var(--parent-card);border-radius:var(--parent-radius-md);box-shadow:var(--parent-shadow-soft);padding:16px;margin-bottom:12px}.parent-card-warm{background:linear-gradient(135deg,#fff9f7,#fff 55%,#fff5f3);border:1px solid rgba(200,76,76,.08)}.parent-skeleton{background:linear-gradient(90deg,#ece9e6 25%,#f5f3f1,#ece9e6 75%);background-size:200% 100%;animation:parent-shimmer 1.2s ease-in-out infinite;border-radius:8px}@keyframes parent-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.parent-status-pill{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:500;line-height:1.3;white-space:nowrap;flex-shrink:0}.status-neutral{background:var(--parent-neutral-soft);color:var(--parent-neutral)}.status-info{background:var(--parent-info-soft);color:var(--parent-info)}.status-warning{background:var(--parent-warning-soft);color:var(--parent-warning)}.status-waiting{background:#fef3c7;color:#b45309}.status-processing{background:var(--parent-processing-soft);color:var(--parent-processing)}.status-success{background:var(--parent-success-soft);color:var(--parent-success)}.status-danger{background:var(--parent-danger-soft);color:var(--parent-danger)}.parent-pressable{transition:transform .12s ease,opacity .12s ease,box-shadow .12s ease;-webkit-tap-highlight-color:transparent}.parent-pressable:active{transform:scale(.98);opacity:.92}@media(prefers-reduced-motion:reduce){.parent-pressable:active{transform:none}.parent-skeleton{animation:none}}.page-header{display:flex;align-items:center;gap:12px;margin-bottom:16px}.page-header h1{flex:1;font-size:18px;font-weight:700;margin:0}.back-btn{width:36px;height:36px;border:none;background:var(--parent-card);border-radius:50%;font-size:24px;line-height:1;color:var(--parent-text);cursor:pointer}:root{--teacher-bg: #f4f6f8;--teacher-card: #ffffff;--teacher-text: #1f2937;--teacher-text-secondary: #5c6570;--teacher-text-muted: #8b939e;--teacher-brand: #2563eb;--teacher-brand-soft: #eff6ff;--teacher-warning: #d97706;--teacher-warning-soft: #fef3e2;--teacher-planning: #6b7280;--teacher-planning-soft: #f3f4f6;--teacher-radius-md: 14px;--teacher-shadow: 0 2px 12px rgba(31, 41, 55, .06);--teacher-page-x: 16px;--teacher-nav-height: 56px;--teacher-touch-min: 44px;--teacher-sidebar-width: 240px;--teacher-content-max: 1240px;--teacher-surface: #ffffff;--teacher-border: #e8ecf1;--teacher-muted: #8b939e;--teacher-desktop-breakpoint: 1100px}.teacher-shell{min-height:100%;background:var(--teacher-bg);color:var(--teacher-text)}.teacher-shell-inner{min-width:0;min-height:100%;max-width:480px;margin:0 auto}@media(min-width:1100px){.teacher-shell{display:grid;grid-template-columns:var(--teacher-sidebar-width) minmax(0,1fr);min-height:100vh}.teacher-shell-inner{max-width:none;margin:0;min-width:0;width:100%}}.teacher-main{min-height:calc(100vh - var(--teacher-nav-height));padding-bottom:calc(var(--teacher-nav-height) + env(safe-area-inset-bottom,0px) + 16px);min-width:0;width:100%}@media(min-width:1100px){.teacher-main{min-height:100vh;padding:24px 28px 48px}}.teacher-page{padding:16px var(--teacher-page-x) 24px;max-width:720px;min-width:0;width:100%;box-sizing:border-box}@media(min-width:1100px){.teacher-page{max-width:1100px;padding:0}}.teacher-page-header{margin-bottom:12px}.teacher-page-header h1{font-size:22px;font-weight:700;margin:0}.teacher-page-subtitle{margin:6px 0 0;font-size:14px;color:var(--teacher-text-secondary)}.teacher-reminder-card{display:block;background:var(--teacher-card);border-radius:var(--teacher-radius-md);padding:16px;margin-bottom:12px;box-shadow:var(--teacher-shadow);text-decoration:none;color:inherit;border:1px solid transparent;transition:border-color .15s;box-sizing:border-box}.teacher-reminder-card:active,.teacher-reminder-card:hover{border-color:#2563eb33}.teacher-reminder-card.planning{background:var(--teacher-planning-soft)}.teacher-reminder-card.primary{background:#fff;border-color:#2563eb38;box-shadow:0 4px 18px #2563eb1a}.teacher-reminder-card.primary h2{font-size:18px}.teacher-reminder-card.primary .card-action{font-weight:600}.teacher-reminder-card.secondary-planning{padding:12px 14px;margin-bottom:8px;background:#fff;box-shadow:0 1px 6px #1f29370a}.teacher-reminder-card.secondary-planning h2{font-size:14px;font-weight:600;margin:0 0 4px}.teacher-reminder-card.secondary-planning .card-body{font-size:13px;line-height:1.45}.teacher-reminder-card.secondary-planning .card-action{margin-top:6px;font-size:12px;font-weight:500;color:var(--teacher-text-muted)}.teacher-reminder-card h2{font-size:16px;font-weight:600;margin:0 0 8px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.teacher-reminder-card .card-body{font-size:14px;color:var(--teacher-text-secondary);line-height:1.55}.teacher-reminder-card .card-body p{margin:0 0 4px}.teacher-reminder-card .card-body p:last-child{margin-bottom:0}.teacher-reminder-card .card-action{margin-top:10px;font-size:13px;color:var(--teacher-brand);font-weight:500}.teacher-badge-building{display:inline-block;font-size:11px;font-weight:500;color:#4b5563;background:#e5e7eb;border-radius:999px;padding:2px 8px;margin-left:auto;flex-shrink:0}.teacher-badge-planning{display:inline-block;font-size:11px;font-weight:500;color:var(--teacher-planning);background:#e5e7eb;border-radius:6px;padding:2px 8px;margin-left:auto}.teacher-badge-open{display:inline-block;font-size:11px;font-weight:500;color:#2e9e6a;background:#e8f6ef;border-radius:6px;padding:2px 8px;margin-left:auto}.teacher-empty-line{color:var(--teacher-text-muted)}.teacher-page-header-row{display:flex;align-items:center;gap:8px;min-height:var(--teacher-touch-min)}.teacher-back-btn{border:none;background:transparent;font-size:28px;line-height:1;padding:0 8px 0 0;cursor:pointer;color:var(--teacher-text);min-width:var(--teacher-touch-min);min-height:var(--teacher-touch-min);display:flex;align-items:center}.teacher-page-header-row h1{flex:1;font-size:18px;font-weight:600;margin:0}.teacher-logout-btn{display:block;width:100%;max-width:100%;margin-top:20px;padding:12px;border:1px solid #e5e7eb;border-radius:12px;background:#fff;color:#dc2626;font-size:15px;font-weight:500;cursor:pointer;box-sizing:border-box;position:static}.teacher-logout-btn:disabled{opacity:.6}.teacher-sidebar-nav{display:none}.teacher-bottom-nav{position:fixed;left:50%;transform:translate(-50%);bottom:0;width:100%;max-width:480px;height:calc(var(--teacher-nav-height) + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);display:flex;align-items:stretch;background:#fffffff7;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--teacher-border);z-index:90;box-shadow:0 -4px 24px #1f29370f}.teacher-bottom-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-decoration:none;color:var(--teacher-text-muted);font-size:11px;min-height:var(--teacher-nav-height);transition:color .15s}.teacher-bottom-nav-item.active{color:var(--teacher-brand);font-weight:600}.teacher-bottom-nav-icon{font-size:18px;line-height:1}.teacher-bottom-nav-label{line-height:1.2}@media(min-width:1100px){.teacher-sidebar-nav{display:flex;flex-direction:column;min-height:100vh;background:#1e293b;color:#e2e8f0;padding:0;position:sticky;top:0;align-self:start}.teacher-sidebar-brand{padding:24px 20px 20px;border-bottom:1px solid rgba(255,255,255,.08)}.teacher-sidebar-logo{display:block;font-size:20px;font-weight:800;letter-spacing:.02em;color:#fff}.teacher-sidebar-tag{display:block;margin-top:4px;font-size:12px;color:#94a3b8}.teacher-sidebar-links{display:flex;flex-direction:column;gap:4px;padding:16px 12px;flex:1}.teacher-sidebar-link{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:10px;text-decoration:none;color:#cbd5e1;font-size:15px;font-weight:500;transition:background .15s,color .15s}.teacher-sidebar-link:hover{background:#ffffff0f;color:#fff}.teacher-sidebar-link.active{background:#2563eb38;color:#fff;font-weight:600}.teacher-sidebar-icon{width:22px;text-align:center;font-size:16px;flex-shrink:0}.teacher-bottom-nav{display:none}}.teacher-main-inner{width:100%;max-width:var(--teacher-content-max);margin:0 auto;min-width:0}@media(min-width:1100px){.teacher-page{max-width:none;padding:0}.teacher-page-sub,.teacher-page-subtitle{font-size:15px;color:var(--teacher-text-secondary);margin-top:8px}}.teacher-card{background:var(--teacher-surface);border:1px solid var(--teacher-border);border-radius:var(--teacher-radius-md);padding:20px;margin-bottom:16px;box-shadow:var(--teacher-shadow);box-sizing:border-box}.teacher-muted{color:var(--teacher-text-muted);font-size:14px;margin:0}.teacher-error{color:#dc2626;font-size:14px;margin:0 0 12px}.teacher-link{color:var(--teacher-brand);text-decoration:none;font-size:14px;font-weight:500}.teacher-btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:10px;padding:10px 18px;font-size:15px;font-weight:600;cursor:pointer;transition:background .15s,border-color .15s,box-shadow .15s;box-sizing:border-box;background:#fff;color:var(--teacher-text)}.teacher-btn-primary{background:var(--teacher-brand);color:#fff;border-color:var(--teacher-brand);box-shadow:0 2px 8px #2563eb40}.teacher-btn-primary:hover{background:#1d4ed8}.teacher-btn-outline{background:#fff;border-color:var(--teacher-border);color:var(--teacher-text)}.teacher-btn-sm{padding:8px 14px;font-size:13px}.teacher-btn-block{display:flex;width:100%;text-decoration:none}.teacher-hero-header{display:flex;flex-direction:column;gap:16px;margin-bottom:24px}@media(min-width:768px){.teacher-hero-header{flex-direction:row;align-items:flex-start;justify-content:space-between;gap:24px}}.teacher-hero-header h1{font-size:26px;font-weight:800;margin:0;letter-spacing:-.02em}.teacher-hero-cta{flex-shrink:0;min-width:160px;padding:12px 24px;text-decoration:none}.teacher-stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:20px}@media(min-width:768px){.teacher-stats-grid{grid-template-columns:repeat(4,1fr);gap:16px}}.teacher-stat-card{background:var(--teacher-surface);border:1px solid var(--teacher-border);border-radius:var(--teacher-radius-md);padding:18px 16px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--teacher-shadow)}.teacher-stat-label{font-size:13px;color:var(--teacher-text-secondary);font-weight:500}.teacher-stat-value{font-size:2rem;font-weight:800;line-height:1.1;color:var(--teacher-text);letter-spacing:-.03em}.teacher-stat-card:first-child .teacher-stat-value{color:var(--teacher-brand)}.teacher-section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.teacher-section-head h2{margin:0;font-size:17px;font-weight:700}.teacher-task-table{list-style:none;margin:0;padding:0}.teacher-task-row{display:grid;grid-template-columns:1fr auto;gap:8px 12px;padding:16px 0;border-bottom:1px solid var(--teacher-border);align-items:center}.teacher-task-row:last-child{border-bottom:none;padding-bottom:0}@media(min-width:768px){.teacher-task-row{grid-template-columns:minmax(0,2fr) minmax(0,1fr) minmax(0,1fr) auto auto;gap:16px;align-items:center}}.teacher-task-row-title{font-weight:600;font-size:15px;margin:0 0 4px}.teacher-task-row-sub{font-size:13px;color:var(--teacher-text-secondary);margin:0}.teacher-task-row-meta{font-size:13px;color:var(--teacher-text-muted)}.teacher-task-row-status{font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;background:var(--teacher-brand-soft);color:var(--teacher-brand);white-space:nowrap;justify-self:start}.teacher-empty-state{text-align:center;padding:32px 16px}.teacher-empty-state p{margin:0 0 8px;color:var(--teacher-text-secondary)}.teacher-alert{background:#fff7ed;border-color:#fed7aa}.teacher-mobile-only-cta{display:block;margin-bottom:16px}@media(min-width:768px){.teacher-mobile-only-cta{display:none}}.teacher-desk-page{padding:0}.teacher-desk-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.teacher-desk-header h1{flex:1;font-size:22px;font-weight:800;margin:0}@media(min-width:1100px){.teacher-desk-header h1{font-size:26px}.teacher-desk-header .teacher-back-btn{display:none}}.teacher-desk-refresh{border:1px solid var(--teacher-border);background:#fff;color:var(--teacher-text);padding:8px 14px;border-radius:8px;font-size:14px;cursor:pointer}.teacher-desk-tabs{display:flex;gap:8px;margin-bottom:16px;background:#eef2f6;padding:4px;border-radius:12px}.teacher-desk-tabs button{flex:1;padding:10px 12px;border:none;background:transparent;border-radius:9px;font-size:14px;font-weight:600;color:var(--teacher-text-secondary);cursor:pointer;position:relative}.teacher-desk-tabs button.active{background:#fff;color:var(--teacher-brand);box-shadow:0 1px 4px #1f293714}.teacher-desk-filters{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.teacher-desk-filters button{padding:7px 14px;border:1px solid var(--teacher-border);background:#fff;border-radius:999px;font-size:13px;font-weight:500;color:var(--teacher-text-secondary);cursor:pointer}.teacher-desk-filters button.active{background:var(--teacher-brand);border-color:var(--teacher-brand);color:#fff}.teacher-desk-card{display:flex;gap:16px;background:var(--teacher-surface);border:1px solid var(--teacher-border);border-radius:var(--teacher-radius-md);padding:16px;margin-bottom:12px;box-shadow:var(--teacher-shadow)}.teacher-desk-card.is-new{border-left:4px solid #ef4444}.teacher-desk-empty{text-align:center;padding:48px 24px;background:var(--teacher-surface);border:1px dashed var(--teacher-border);border-radius:var(--teacher-radius-md);color:var(--teacher-text-secondary)}.teacher-desk-empty-title{font-size:16px;font-weight:600;color:var(--teacher-text);margin:0 0 8px}