*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:14px}
body{font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;background:var(--content-bg);color:var(--text-primary);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:var(--primary)}
ul,ol{list-style:none}

/* App Shell */
.app-shell{display:flex;height:100vh;overflow:hidden}

/* Sidebar */
.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--sidebar-bg);display:flex;flex-direction:column;overflow:hidden;transition:width .25s ease,min-width .25s ease;z-index:100;flex-shrink:0}
.sidebar.collapsed{width:60px;min-width:60px}
.sidebar-logo{display:flex;align-items:center;gap:10px;padding:0 16px;height:var(--topbar-height);border-bottom:1px solid rgba(255,255,255,.06);flex-shrink:0;overflow:hidden;cursor:pointer}
.sidebar-logo .logo-icon{width:32px;height:32px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:15px;color:#fff;font-weight:700}
.sidebar-logo .logo-texts{overflow:hidden;white-space:nowrap}
.sidebar-logo .logo-title{font-size:12.5px;font-weight:700;color:#f9fafb;line-height:1.3}
.sidebar-logo .logo-sub{font-size:10.5px;color:var(--sidebar-text)}
.sidebar.collapsed .logo-texts{display:none}
.sidebar-nav{flex:1;overflow-y:auto;overflow-x:hidden;padding:6px 0;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.1) transparent}
.sidebar-nav::-webkit-scrollbar{width:3px}
.sidebar-nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:2px}
.nav-group-label{padding:14px 16px 4px;font-size:10.5px;font-weight:600;color:var(--sidebar-group-text);text-transform:uppercase;letter-spacing:.06em;white-space:nowrap;overflow:hidden}
.sidebar.collapsed .nav-group-label{visibility:hidden;height:0;padding:0}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:10px;padding:8px 16px;color:var(--sidebar-text);font-size:13px;cursor:pointer;transition:var(--transition);white-space:nowrap;overflow:hidden;user-select:none}
.nav-link:hover{background:var(--sidebar-hover);color:var(--sidebar-text-hover)}
.nav-link.active{background:var(--sidebar-active-bg);color:var(--sidebar-active-text)}
.nav-link .nav-icon{font-size:15px;flex-shrink:0;width:20px;text-align:center}
.nav-link .nav-label{flex:1;overflow:hidden;text-overflow:ellipsis}
.nav-link .nav-badge{background:var(--danger);color:#fff;font-size:10px;font-weight:700;padding:1px 5px;border-radius:10px;flex-shrink:0}
.nav-link .nav-arrow{font-size:10px;transition:transform .2s;flex-shrink:0;color:var(--sidebar-group-text);margin-left:auto}
.nav-item.open>.nav-link .nav-arrow{transform:rotate(90deg)}
.sidebar.collapsed .nav-link .nav-label,.sidebar.collapsed .nav-link .nav-badge,.sidebar.collapsed .nav-link .nav-arrow{display:none}
.nav-sub{display:none;background:rgba(0,0,0,.15)}
.nav-item.open>.nav-sub{display:block}
.nav-sub .nav-link{padding-left:44px;font-size:12.5px}
.nav-sub .nav-link.active{background:rgba(26,86,219,.45);color:#fff}
.sidebar.collapsed .nav-sub{display:none!important}
.sidebar-footer{padding:10px 16px 14px;border-top:1px solid rgba(255,255,255,.06);flex-shrink:0;overflow:hidden}
.sidebar-footer .version-text{font-size:11px;color:var(--sidebar-group-text);white-space:nowrap}
.sidebar.collapsed .sidebar-footer{display:none}

/* Main Area */
.main-area{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0}

/* Topbar */
.topbar{height:var(--topbar-height);background:var(--topbar-bg);border-bottom:1px solid var(--topbar-border);display:flex;align-items:center;padding:0 20px;gap:12px;flex-shrink:0;z-index:50}
.topbar-toggle{width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;border-radius:6px;color:var(--text-secondary);font-size:18px;transition:var(--transition);flex-shrink:0;background:none;border:none}
.topbar-toggle:hover{background:var(--content-bg);color:var(--text-primary)}
.topbar-page-title{font-size:15px;font-weight:600;color:var(--text-primary);flex:1}
.topbar-actions{display:flex;align-items:center;gap:6px}
.topbar-icon-btn{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:8px;cursor:pointer;color:var(--text-secondary);font-size:17px;transition:var(--transition);position:relative;background:none;border:none}
.topbar-icon-btn:hover{background:var(--content-bg);color:var(--text-primary)}
.topbar-icon-btn .badge-dot{position:absolute;top:5px;right:5px;width:8px;height:8px;background:var(--danger);border-radius:50%;border:2px solid #fff}
.topbar-user{display:flex;align-items:center;gap:8px;padding:4px 10px;border-radius:8px;cursor:pointer;transition:var(--transition)}
.topbar-user:hover{background:var(--content-bg)}
.topbar-user .avatar{width:30px;height:30px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff}
.topbar-user .user-name{font-size:13px;font-weight:500;color:var(--text-primary)}
.topbar-user .role-arrow{font-size:11px;color:var(--text-muted);margin-left:2px}
/* Role Switcher Dropdown */
.topbar-role-switcher{position:relative}
.role-dropdown{position:absolute;top:calc(100% + 8px);right:0;width:220px;background:#fff;border-radius:10px;box-shadow:0 8px 30px rgba(0,0,0,.15);border:1px solid var(--border-color);z-index:999;overflow:hidden;display:none}
.role-dropdown.open{display:block;animation:fadeInDown .15s ease}
@keyframes fadeInDown{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
.role-dropdown-title{padding:10px 14px 8px;font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--border-color);background:#f9fafb}
.role-option{display:flex;align-items:center;gap:10px;padding:9px 14px;cursor:pointer;transition:background .15s}
.role-option:hover{background:#f0f7ff}
.role-option.active{background:#eff6ff}
.role-opt-avatar{width:30px;height:30px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff;flex-shrink:0}
.role-opt-info{flex:1;min-width:0}
.role-opt-name{font-size:13px;font-weight:500;color:var(--text-primary)}
.role-opt-role{font-size:11px;color:var(--text-muted)}
.role-opt-check{font-size:13px;color:var(--primary);font-weight:700}

/* Page Content */
.page-content{flex:1;overflow-y:auto;padding:20px 24px}
.page-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:18px;gap:16px}
.page-header-left .page-title{font-size:20px;font-weight:700;color:var(--text-primary);line-height:1.3}
.page-header-left .page-desc{font-size:13px;color:var(--text-secondary);margin-top:4px}
.page-header-right{display:flex;align-items:center;gap:8px;flex-shrink:0;padding-top:4px}

/* Cards */
.card{background:var(--card-bg);border-radius:var(--card-radius);box-shadow:var(--card-shadow);overflow:hidden;margin-bottom:16px}
.card-header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--border-color)}
.card-title{font-size:14px;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:8px}
.card-body{padding:18px}
.card-footer{padding:12px 18px;border-top:1px solid var(--border-color);background:#f9fafb}

/* Stat Cards */
.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
.stat-card{background:var(--card-bg);border-radius:var(--card-radius);box-shadow:var(--card-shadow);padding:18px;display:flex;align-items:center;justify-content:space-between;transition:var(--transition);cursor:default}
.stat-card:hover{box-shadow:var(--card-shadow-md);transform:translateY(-1px)}
.stat-card-info .stat-label{font-size:12px;color:var(--text-secondary);margin-bottom:4px}
.stat-card-info .stat-value{font-size:28px;font-weight:700;color:var(--text-primary);line-height:1.2}
.stat-card-info .stat-sub{font-size:12px;color:var(--text-muted);margin-top:4px}
.stat-card-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.stat-card-icon.blue{background:var(--primary-light);color:var(--primary)}
.stat-card-icon.red{background:var(--danger-light);color:var(--danger)}
.stat-card-icon.orange{background:var(--warning-light);color:var(--warning)}
.stat-card-icon.green{background:var(--success-light);color:var(--success)}
.stat-card-icon.purple{background:#ede9fe;color:#7c3aed}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:var(--border-radius-sm);font-size:13px;font-weight:500;cursor:pointer;border:1px solid transparent;transition:var(--transition);white-space:nowrap;line-height:1.4;font-family:inherit}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}
.btn-success{background:var(--success);color:#fff;border-color:var(--success)}
.btn-success:hover{background:#0a7a56}
.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}
.btn-danger:hover{background:#b91c1c}
.btn-warning{background:var(--warning);color:#fff;border-color:var(--warning)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-outline-gray{background:transparent;color:var(--text-secondary);border-color:var(--border-color)}
.btn-outline-gray:hover{background:var(--content-bg);color:var(--text-primary)}
.btn-ghost{background:transparent;color:var(--text-secondary);border-color:transparent}
.btn-ghost:hover{background:var(--content-bg);color:var(--text-primary)}
.btn-sm{padding:4px 10px;font-size:12px}
.btn-lg{padding:10px 20px;font-size:14px}
.btn-icon{padding:7px}
.btn-white{background:rgba(255,255,255,.15);color:#fff;border:1px solid rgba(255,255,255,.3)}
.btn-white:hover{background:rgba(255,255,255,.25)}

/* Badges */
.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:600;white-space:nowrap}
.badge-primary{background:var(--primary-light);color:var(--primary)}
.badge-success{background:var(--success-light);color:var(--success)}
.badge-warning{background:var(--warning-light);color:var(--warning)}
.badge-danger{background:var(--danger-light);color:var(--danger)}
.badge-gray{background:#f3f4f6;color:var(--text-secondary)}
.badge-purple{background:#ede9fe;color:#7c3aed}
.badge-info{background:var(--info-light);color:var(--info)}
.badge-risk-high{background:var(--risk-high-bg);color:var(--risk-high-text)}
.badge-risk-mid{background:var(--risk-mid-bg);color:var(--risk-mid-text)}
.badge-risk-low{background:var(--risk-low-bg);color:var(--risk-low-text)}

/* Tables */
.table-wrap{overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;font-size:13px}
.data-table thead tr{background:#f9fafb;border-bottom:1px solid var(--border-color)}
.data-table thead th{padding:10px 14px;text-align:left;font-weight:600;color:var(--text-secondary);white-space:nowrap;font-size:12px}
.data-table tbody tr{border-bottom:1px solid #f3f4f6;transition:var(--transition)}
.data-table tbody tr:last-child{border-bottom:none}
.data-table tbody tr:hover{background:#fafbff}
.data-table tbody td{padding:11px 14px;color:var(--text-primary);vertical-align:middle}
.td-link{color:var(--primary);cursor:pointer;font-weight:500}
.td-link:hover{text-decoration:underline}
.td-muted{color:var(--text-muted);font-size:12px}
.td-actions{display:flex;align-items:center;gap:6px;flex-wrap:nowrap}

/* Search Bar */
.search-bar{background:var(--card-bg);border-radius:var(--card-radius);box-shadow:var(--card-shadow);padding:14px 18px;margin-bottom:14px}
.search-row{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}
.search-field{display:flex;flex-direction:column;gap:4px}
.search-field label{font-size:12px;color:var(--text-secondary);font-weight:500}
.search-actions{display:flex;gap:8px;align-items:flex-end;margin-left:auto}

/* Form Controls */
.form-control{width:100%;padding:7px 10px;border:1px solid var(--border-color);border-radius:var(--border-radius-sm);font-size:13px;color:var(--text-primary);background:#fff;transition:var(--transition);outline:none;font-family:inherit}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,86,219,.1)}
.form-control::placeholder{color:var(--text-muted)}
select.form-control{cursor:pointer}
textarea.form-control{resize:vertical;min-height:80px}
.form-control.error{border-color:var(--danger)}
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-primary);margin-bottom:6px}
.form-label .required{color:var(--danger);margin-left:2px}
.form-hint{font-size:12px;color:var(--text-muted);margin-top:4px}
.form-row{display:flex;gap:16px}
.form-row .form-group{flex:1}

/* Tabs */
.tabs{display:flex;border-bottom:2px solid var(--border-color);margin-bottom:16px;gap:0}
.tab-item{padding:10px 16px;font-size:13px;font-weight:500;color:var(--text-secondary);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:var(--transition);display:flex;align-items:center;gap:6px;white-space:nowrap}
.tab-item:hover{color:var(--primary)}
.tab-item.active{color:var(--primary);border-bottom-color:var(--primary)}
.tab-item .tab-count{background:var(--primary-light);color:var(--primary);font-size:11px;font-weight:700;padding:1px 6px;border-radius:10px}
.tab-item.active .tab-count{background:var(--primary);color:#fff}

/* Pagination */
.pagination{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;border-top:1px solid var(--border-color);font-size:13px;color:var(--text-secondary)}
.pagination-pages{display:flex;gap:4px}
.page-btn{width:30px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:6px;cursor:pointer;border:1px solid var(--border-color);background:#fff;font-size:13px;color:var(--text-secondary);transition:var(--transition)}
.page-btn:hover{border-color:var(--primary);color:var(--primary)}
.page-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1000;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;pointer-events:none;transition:opacity .2s}
.modal-overlay.show{opacity:1;pointer-events:auto}
.modal{background:#fff;border-radius:var(--border-radius-lg);box-shadow:0 20px 60px rgba(0,0,0,.2);width:100%;max-width:560px;max-height:90vh;overflow-y:auto;transform:translateY(-10px);transition:transform .2s}
.modal-overlay.show .modal{transform:translateY(0)}
.modal-lg{max-width:800px}
.modal-xl{max-width:1000px}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border-color)}
.modal-title{font-size:15px;font-weight:600;color:var(--text-primary)}
.modal-close{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:6px;cursor:pointer;color:var(--text-muted);font-size:18px;transition:var(--transition);background:none;border:none}
.modal-close:hover{background:var(--content-bg);color:var(--text-primary)}
.modal-body{padding:20px}
.modal-footer{padding:14px 20px;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:8px}

/* Toast */
.toast-container{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:8px}
.toast{background:#fff;border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.15);padding:12px 16px;display:flex;align-items:center;gap:10px;min-width:280px;max-width:400px;transform:translateX(120%);transition:transform .3s ease;border-left:4px solid var(--primary)}
.toast.show{transform:translateX(0)}
.toast.success{border-left-color:var(--success)}
.toast.error{border-left-color:var(--danger)}
.toast.warning{border-left-color:var(--warning)}
.toast-icon{font-size:18px;flex-shrink:0}
.toast-content{flex:1}
.toast-title{font-size:13px;font-weight:600;color:var(--text-primary)}
.toast-msg{font-size:12px;color:var(--text-secondary);margin-top:2px}

/* Welcome Banner */
.welcome-banner{background:linear-gradient(135deg,#1a56db 0%,#1240a8 60%,#0f2d6e 100%);border-radius:var(--card-radius);padding:22px 24px;color:#fff;display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;position:relative;overflow:hidden}
.welcome-banner::after{content:'';position:absolute;right:-40px;top:-40px;width:200px;height:200px;background:rgba(255,255,255,.05);border-radius:50%}
.welcome-banner::before{content:'';position:absolute;right:120px;bottom:-60px;width:160px;height:160px;background:rgba(255,255,255,.04);border-radius:50%}
.welcome-left .welcome-title{font-size:20px;font-weight:700;margin-bottom:4px}
.welcome-left .welcome-sub{font-size:13px;opacity:.85}
.welcome-left .welcome-actions{display:flex;gap:10px;margin-top:14px}
.welcome-stats{display:flex;gap:28px;flex-shrink:0;position:relative;z-index:1}
.welcome-stat{text-align:center}
.welcome-stat .ws-value{font-size:30px;font-weight:700;line-height:1}
.welcome-stat .ws-label{font-size:11px;opacity:.8;margin-top:4px}

/* Alert Items */
.alert-item{display:flex;align-items:flex-start;gap:12px;padding:12px 14px;border-radius:8px;margin-bottom:8px;border:1px solid transparent;transition:var(--transition)}
.alert-item:last-child{margin-bottom:0}
.alert-item:hover{box-shadow:var(--card-shadow)}
.alert-item.high{background:#fff5f5;border-color:#fed7d7}
.alert-item.medium{background:#fffbeb;border-color:#fef3c7}
.alert-item.low{background:#f0fdf4;border-color:#d1fae5}
.alert-item.info{background:#eff6ff;border-color:#bfdbfe}
.alert-icon{font-size:18px;flex-shrink:0;margin-top:1px}
.alert-content{flex:1}
.alert-title{font-size:13px;font-weight:600;color:var(--text-primary)}
.alert-desc{font-size:12px;color:var(--text-secondary);margin-top:2px}
.alert-time{font-size:11px;color:var(--text-muted);flex-shrink:0;white-space:nowrap}

/* Upload Zone */
.upload-zone{border:2px dashed var(--border-color);border-radius:var(--border-radius);padding:24px;text-align:center;cursor:pointer;transition:var(--transition);background:var(--content-bg)}
.upload-zone:hover,.upload-zone.drag-over{border-color:var(--primary);background:var(--primary-light)}
.upload-zone .upload-icon{font-size:32px;color:var(--text-muted);margin-bottom:8px}
.upload-zone .upload-text{font-size:13px;color:var(--text-secondary)}
.upload-zone .upload-hint{font-size:12px;color:var(--text-muted);margin-top:4px}
.upload-list{margin-top:10px;display:flex;flex-direction:column;gap:6px}
.upload-item{display:flex;align-items:center;gap:10px;padding:8px 12px;background:#f9fafb;border-radius:6px;border:1px solid var(--border-color)}
.upload-item .file-icon{font-size:18px;color:var(--primary);flex-shrink:0}
.upload-item .file-info{flex:1;overflow:hidden}
.upload-item .file-name{font-size:13px;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.upload-item .file-size{font-size:11px;color:var(--text-muted)}
.upload-item .file-remove{color:var(--text-muted);cursor:pointer;font-size:16px;flex-shrink:0;background:none;border:none}
.upload-item .file-remove:hover{color:var(--danger)}

/* Progress */
.progress{height:6px;background:var(--border-color);border-radius:3px;overflow:hidden}
.progress-bar{height:100%;border-radius:3px;background:var(--primary);transition:width .4s ease}
.progress-bar.success{background:var(--success)}
.progress-bar.warning{background:var(--warning)}
.progress-bar.danger{background:var(--danger)}

/* Empty State */
.empty-state{text-align:center;padding:48px 20px;color:var(--text-muted)}
.empty-state .empty-icon{font-size:48px;margin-bottom:12px}
.empty-state .empty-text{font-size:14px}

/* Material Cards */
.mat-type-tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.type-tab{padding:8px 16px;border-radius:6px;font-size:13px;font-weight:500;color:var(--text-secondary);cursor:pointer;background:var(--card-bg);border:1px solid var(--border-color);transition:var(--transition)}
.type-tab:hover{border-color:var(--primary);color:var(--primary)}
.type-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.materials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding:14px}
@media(max-width:1280px){.materials-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.materials-grid{grid-template-columns:1fr}}
.material-card{background:#fff;border-radius:var(--card-radius);box-shadow:var(--card-shadow);padding:16px;border:1px solid var(--border-color);transition:var(--transition)}
.material-card:hover{box-shadow:var(--card-shadow-md);transform:translateY(-1px)}
.material-card .card-header{display:flex;align-items:center;gap:8px;padding:0 0 12px;border-bottom:1px solid var(--border-color);margin-bottom:12px}
.material-card .type-icon{font-size:20px}
.material-card .card-title{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:10px;line-height:1.4}
.material-card .card-info{margin-bottom:14px}
.material-card .card-info div{font-size:12px;color:var(--text-secondary);margin-bottom:6px}
.material-card .card-info div:last-child{margin-bottom:0}
.material-card .info-label{color:var(--text-muted)}
.material-card .format-tag{background:var(--primary-light);color:var(--primary);padding:1px 6px;border-radius:4px;font-size:11px;font-weight:500}
.material-card .card-actions{display:flex;gap:8px}
.badge-blue{background:#eff6ff;color:#2563eb}
.badge-green{background:#f0fdf4;color:#059669}
.badge-orange{background:#fff7ed;color:#d97706}

/* Filter Bar */
.filter-bar{background:var(--card-bg);border-radius:var(--card-radius);box-shadow:var(--card-shadow);padding:14px 18px;margin-bottom:16px}
.filter-row{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end}
.filter-group{display:flex;flex-direction:column;gap:6px}
.filter-group label{font-size:12px;color:var(--text-secondary);font-weight:500}
.filter-group .form-control{min-width:160px;width:180px}

/* Materials Tree */
.materials-tree{padding:12px}
.empty-tree{text-align:center;color:var(--text-muted);padding:40px;font-size:14px}

/* Year Node */
.year-node{margin-bottom:8px}
.year-header{display:flex;align-items:center;gap:8px;padding:10px 12px;background:#f9fafb;border-radius:8px;cursor:pointer;transition:var(--transition)}
.year-header:hover{background:#f0f4ff}
.year-header.expanded{background:#eff6ff}
.year-icon{font-size:16px}
.year-title{font-size:14px;font-weight:600;color:var(--text-primary)}
.year-count{font-size:12px;color:var(--text-muted)}
.year-arrow{font-size:10px;color:var(--text-muted);margin-left:auto;transition:transform .2s}
.year-header.expanded .year-arrow{transform:rotate(180deg)}

/* Project Node */
.project-node{margin-left:16px;margin-top:6px;border-left:2px solid var(--border-color);padding-left:14px}
.project-header{display:flex;align-items:center;gap:8px;padding:8px 10px;background:#fff;border-radius:6px;border:1px solid var(--border-color);cursor:pointer;transition:var(--transition)}
.project-header:hover{border-color:var(--primary);background:#f9faff}
.project-header.expanded{border-color:var(--primary);background:#f0f7ff}
.project-icon{font-size:14px}
.project-title{font-size:13px;font-weight:500;color:var(--text-primary);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.project-count{font-size:11px;color:var(--text-muted)}
.project-arrow{font-size:10px;color:var(--text-muted);margin-left:auto;transition:transform .2s}
.project-header.expanded .project-arrow{transform:rotate(180deg)}

/* Materials List */
.year-content{margin-top:6px;display:none}
.year-header.expanded + .year-content{display:block}
.project-content{margin-top:6px;display:none}
.project-header.expanded + .project-content{display:block}
.materials-list{display:flex;flex-direction:column;gap:4px}

/* Material Item */
.material-item{display:flex;align-items:center;gap:10px;padding:8px 10px;background:#fff;border-radius:6px;border:1px solid transparent;transition:var(--transition)}
.material-item:hover{border-color:var(--border-color);background:#fafbfc}
.material-info{flex:1;min-width:0}
.material-name{font-size:13px;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.material-meta{display:flex;align-items:center;gap:10px;margin-top:4px}
.material-meta .meta-text{font-size:11px;color:var(--text-muted)}
.material-source{display:flex;align-items:center;gap:4px;margin-top:4px}
.material-source .source-label{font-size:11px;color:var(--text-muted)}
.material-source .source-value{font-size:11px;color:var(--primary);font-weight:500}
.material-actions{display:flex;gap:6px;flex-shrink:0}

/* Checkbox Styles */
.checkbox-wrapper{position:relative;display:flex;align-items:center;cursor:pointer;user-select:none}
.checkbox-wrapper input{position:absolute;opacity:0;cursor:pointer;height:0;width:0}
.checkbox-wrapper .checkmark{width:18px;height:18px;border:2px solid var(--border-color);border-radius:4px;transition:var(--transition);background:#fff}
.checkbox-wrapper:hover .checkmark{border-color:var(--primary)}
.checkbox-wrapper input:checked ~ .checkmark{background:var(--primary);border-color:var(--primary)}
.checkbox-wrapper .checkmark:after{content:'';position:absolute;left:5px;top:1px;width:6px;height:11px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg);opacity:0;transition:opacity .2s}
.checkbox-wrapper input:checked ~ .checkmark:after{opacity:1}

/* Helpers */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.flex{display:flex}.flex-1{flex:1}.items-center{align-items:center}.justify-between{justify-content:space-between}
.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}
.mt-2{margin-top:8px}.mt-3{margin-top:12px}.mt-4{margin-top:16px}
.mb-2{margin-bottom:8px}.mb-3{margin-bottom:12px}.mb-4{margin-bottom:16px}
.text-sm{font-size:12px}.text-muted{color:var(--text-muted)}.text-secondary{color:var(--text-secondary)}
.text-primary-color{color:var(--primary)}.text-danger{color:var(--danger)}.text-success{color:var(--success)}.text-warning{color:var(--warning)}
.font-bold{font-weight:700}.font-semibold{font-weight:600}
.text-right{text-align:right}.text-center{text-align:center}
.w-full{width:100%}.hidden{display:none!important}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:#9ca3af}
@media(max-width:1280px){.stat-cards{grid-template-columns:repeat(2,1fr)}.grid-4{grid-template-columns:repeat(2,1fr)}}


/* ===== 三级嵌套子菜单（专项审计子类型）===== */
.nav-sub .nav-item-sub > .nav-link-sub {
  padding-left: 32px;
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  display: flex;
  align-items: center;
  cursor: pointer;
  border-radius: 6px;
  padding-top: 7px;
  padding-bottom: 7px;
}
.nav-sub .nav-item-sub > .nav-link-sub:hover,
.nav-sub .nav-item-sub > .nav-link-sub.active {
  color: #fff;
  background: rgba(255,255,255,0.08);
}
.nav-sub-nested {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.nav-sub-nested.open {
  max-height: 200px;
}
.nav-sub-nested .nav-link-nested {
  padding-left: 44px;
  font-size: 12.5px;
  color: rgba(255,255,255,0.6);
  display: block;
  padding-top: 6px;
  padding-bottom: 6px;
  border-radius: 6px;
  text-decoration: none;
}
.nav-sub-nested .nav-link-nested:hover,
.nav-sub-nested .nav-link-nested.active {
  color: #fff;
  background: rgba(255,255,255,0.1);
}