:root{--primary:#2563eb;--primary-light:#3b82f6;--primary-dark:#1d4ed8;--primary-bg:#eff6ff;--primary-border:#bfdbfe;--success:#16a34a;--success-bg:#f0fdf4;--success-border:#bbf7d0;--warning:#d97706;--warning-bg:#fffbeb;--warning-border:#fde68a;--danger:#dc2626;--danger-bg:#fef2f2;--danger-border:#fecaca;--purple:#7c3aed;--purple-bg:#f5f3ff;--purple-border:#ddd6fe;--teal:#0d9488;--teal-bg:#f0fdfa;--teal-border:#99f6e4;--gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;--gray-300:#d1d5db;--gray-400:#9ca3af;--gray-500:#6b7280;--gray-600:#4b5563;--gray-700:#374151;--gray-800:#1f2937;--gray-900:#111827;--bg:#f0f4f8;--card:#fff;--text:#1f2937;--radius:12px;--radius-sm:8px;--radius-lg:16px;--shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);--shadow-md:0 4px 6px rgba(0,0,0,.07),0 2px 4px rgba(0,0,0,.04);--shadow-lg:0 10px 15px rgba(0,0,0,.08),0 4px 6px rgba(0,0,0,.04);--sidebar-w:240px}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Segoe UI','Microsoft YaHei',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{cursor:pointer;border:none;font-family:inherit;outline:none;transition:all .2s}
input,textarea,select{font-family:inherit;outline:none}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--gray-300);border-radius:3px}
.app{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);background:linear-gradient(180deg,#1e293b,#0f172a);color:#cbd5e1;position:fixed;top:0;left:0;bottom:0;z-index:100;display:flex;flex-direction:column;overflow-y:auto;transition:transform .3s}
.sidebar-brand{padding:20px 18px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar-brand h1{font-size:17px;color:#fff;font-weight:700}
.sidebar-brand p{font-size:11px;color:#64748b;margin-top:4px}
.sidebar-nav{flex:1;padding:10px 0}
.nav-group-title{font-size:10px;color:#475569;text-transform:uppercase;letter-spacing:1px;padding:8px 20px 4px;font-weight:600}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 20px;font-size:13.5px;color:#94a3b8;cursor:pointer;transition:all .15s;border-left:3px solid transparent}
.nav-item:hover{background:rgba(255,255,255,.05);color:#e2e8f0}
.nav-item.active{background:rgba(37,99,235,.15);color:#60a5fa;border-left-color:#3b82f6}
.nav-item .icon{font-size:16px;width:20px;text-align:center}
.nav-badge{margin-left:auto;font-size:10px;background:rgba(255,255,255,.1);padding:1px 7px;border-radius:10px;color:#94a3b8}
.sidebar-footer{padding:14px 18px;border-top:1px solid rgba(255,255,255,.08);font-size:11px;color:#475569}
.main{flex:1;margin-left:var(--sidebar-w);min-width:0}
.topbar{background:#fff;padding:14px 24px;display:flex;align-items:center;gap:16px;position:sticky;top:0;z-index:50;box-shadow:var(--shadow)}
.topbar-title{font-size:18px;font-weight:700;color:var(--gray-800)}
.topbar-sub{font-size:12px;color:var(--gray-500);margin-left:8px}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.topbar-search{position:relative;width:260px}
.topbar-search input{width:100%;padding:8px 12px 8px 34px;border:1px solid var(--gray-200);border-radius:var(--radius-sm);font-size:13px;background:var(--gray-50)}
.topbar-search input:focus{border-color:var(--primary);background:#fff}
.topbar-search .search-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--gray-400);font-size:14px}
.stat-pill{display:flex;align-items:center;gap:6px;padding:6px 12px;border-radius:20px;font-size:12px;font-weight:600}
.stat-pill .dot{width:8px;height:8px;border-radius:50%}
.stat-pill.streak{background:var(--warning-bg);color:var(--warning)}
.stat-pill.streak .dot{background:var(--warning)}
.stat-pill.done{background:var(--success-bg);color:var(--success)}
.stat-pill.done .dot{background:var(--success)}
.stat-pill.total{background:var(--primary-bg);color:var(--primary)}
.stat-pill.total .dot{background:var(--primary)}
.menu-toggle{display:none;font-size:20px;background:none;color:var(--gray-700)}
.content{padding:24px;max-width:1400px;margin:0 auto}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:16px}
.card{background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);border:1px solid var(--gray-100);transition:all .2s}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.section-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--gray-100)}
.section-card-header{padding:20px 24px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--gray-100)}
.section-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0}
.section-info{flex:1}
.section-info h3{font-size:16px;font-weight:700;color:var(--gray-800)}
.section-info p{font-size:12px;color:var(--gray-500);margin-top:2px}
.section-stats{display:flex;gap:12px;align-items:center}
.section-stat{text-align:center}
.section-stat .num{font-size:20px;font-weight:700}
.section-stat .label{font-size:10px;color:var(--gray-500)}
.section-card-body{padding:16px 20px}
.section-card-footer{padding:12px 20px;background:var(--gray-50);display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--gray-100)}
.tag{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:500;white-space:nowrap}
.tag-blue{background:var(--primary-bg);color:var(--primary)}
.tag-green{background:var(--success-bg);color:var(--success)}
.tag-orange{background:var(--warning-bg);color:var(--warning)}
.tag-red{background:var(--danger-bg);color:var(--danger)}
.tag-purple{background:var(--purple-bg);color:var(--purple)}
.tag-teal{background:var(--teal-bg);color:var(--teal)}
.tag-gray{background:var(--gray-100);color:var(--gray-600)}
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;transition:all .15s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-outline{background:#fff;border:1px solid var(--gray-200);color:var(--gray-700)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:5px 12px;font-size:12px}
.question-list{display:flex;flex-direction:column;gap:8px}
.question-item{background:#fff;border:1px solid var(--gray-100);border-radius:var(--radius-sm);padding:14px 16px;cursor:pointer;transition:all .15s;display:flex;align-items:center;gap:12px}
.question-item:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.question-item.done{background:var(--success-bg);border-color:var(--success-border)}
.question-item.done .q-num{background:var(--success);color:#fff}
.question-item.wrong{background:var(--danger-bg);border-color:var(--danger-border)}
.question-item.wrong .q-num{background:var(--danger);color:#fff}
.q-num{width:32px;height:32px;border-radius:8px;background:var(--gray-100);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:var(--gray-600);flex-shrink:0}
.q-info{flex:1;min-width:0}
.q-info .q-title{font-size:14px;font-weight:500;color:var(--gray-800);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.q-info .q-meta{font-size:11px;color:var(--gray-500);margin-top:2px;display:flex;gap:8px;align-items:center}
.q-status{font-size:18px;flex-shrink:0}
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px;align-items:center}
.filter-chip{padding:6px 14px;border-radius:20px;font-size:12px;font-weight:500;background:#fff;border:1px solid var(--gray-200);color:var(--gray-600);cursor:pointer;transition:all .15s}
.filter-chip:hover{border-color:var(--primary);color:var(--primary)}
.filter-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.dashboard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.dash-card{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);border:1px solid var(--gray-100);display:flex;align-items:center;gap:16px}
.dash-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0}
.dash-info .dash-num{font-size:28px;font-weight:700;color:var(--gray-800)}
.dash-info .dash-label{font-size:12px;color:var(--gray-500);margin-top:2px}
.progress-bar{height:6px;background:var(--gray-100);border-radius:3px;overflow:hidden}
.progress-fill{height:100%;border-radius:3px;transition:width .5s ease}
.progress-fill.blue{background:var(--primary)}
.progress-fill.green{background:var(--success)}
.progress-fill.orange{background:var(--warning)}
.progress-fill.purple{background:var(--purple)}
.progress-fill.teal{background:var(--teal)}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:200;display:none;align-items:center;justify-content:center;padding:20px}
.modal-overlay.show{display:flex}
.modal{background:#fff;border-radius:var(--radius-lg);max-width:760px;width:100%;max-height:85vh;overflow-y:auto;box-shadow:var(--shadow-lg)}
.modal-header{padding:20px 24px;border-bottom:1px solid var(--gray-100);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;background:#fff;z-index:10}
.modal-header h3{font-size:17px;font-weight:700}
.modal-close{font-size:22px;color:var(--gray-400);background:none;line-height:1}
.modal-close:hover{color:var(--gray-700)}
.modal-body{padding:20px 24px}
.entry-table{width:100%;border-collapse:collapse;margin:12px 0;font-size:13px}
.entry-table th{background:var(--gray-50);padding:10px 12px;text-align:left;font-weight:600;color:var(--gray-600);font-size:12px;border-bottom:2px solid var(--gray-200)}
.entry-table td{padding:10px 12px;border-bottom:1px solid var(--gray-100)}
.entry-table tr:hover td{background:var(--gray-50)}
.entry-table .dc-debit{color:var(--primary);font-weight:600}
.entry-table .dc-credit{color:var(--success);font-weight:600}
.entry-table .amount{text-align:right;font-family:'Courier New',monospace;font-weight:500}
.analysis-box{background:var(--primary-bg);border-left:3px solid var(--primary);padding:14px 16px;border-radius:0 8px 8px 0;margin:12px 0;font-size:13px;line-height:1.7}
.analysis-box .label{font-weight:700;color:var(--primary);margin-bottom:4px;font-size:12px}
.tip-box{background:var(--warning-bg);border-left:3px solid var(--warning);padding:12px 16px;border-radius:0 8px 8px 0;margin:12px 0;font-size:13px}
.notice-item{display:flex;gap:14px;padding:16px;border-bottom:1px solid var(--gray-100)}
.notice-item:last-child{border-bottom:none}
.notice-date{font-size:11px;color:var(--gray-400);text-align:center;flex-shrink:0;width:50px}
.notice-date .day{font-size:20px;font-weight:700;color:var(--gray-700)}
.notice-content{flex:1}
.notice-content h4{font-size:14px;font-weight:600;margin-bottom:4px}
.notice-content p{font-size:13px;color:var(--gray-600);line-height:1.5}
.empty-state{text-align:center;padding:48px 20px;color:var(--gray-400)}
.empty-state .icon{font-size:48px;margin-bottom:12px}
.empty-state p{font-size:14px}
.page{display:none}
.page.active{display:block}
.fade-in{animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.thinking-card{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:var(--radius-lg);padding:24px;margin-bottom:16px}
.thinking-card .day-badge{display:inline-block;background:rgba(255,255,255,.2);padding:3px 12px;border-radius:12px;font-size:11px;margin-bottom:10px}
.thinking-card h3{font-size:16px;margin-bottom:8px}
.thinking-card p{font-size:13px;opacity:.9;line-height:1.6}
.thinking-card .hint{margin-top:12px;font-size:12px;opacity:.7}
.difficulty{display:inline-flex;gap:1px}
.difficulty span{font-size:12px;color:var(--warning)}
.difficulty span.empty{color:var(--gray-200)}
.level-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.level-card{background:#fff;border-radius:var(--radius);padding:16px;text-align:center;border:2px solid var(--gray-100);cursor:pointer;transition:all .2s;position:relative}
.level-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md)}
.level-card.completed{border-color:var(--success);background:var(--success-bg)}
.level-card.locked{opacity:0.5;background:var(--gray-50)}
.level-card.locked:hover{border-color:var(--gray-200);box-shadow:none}
.level-card .level-num{font-size:24px;font-weight:700;margin-bottom:4px}
.level-card .level-name{font-size:12px;color:var(--gray-600)}
.path-step{display:flex;gap:16px;margin-bottom:0;position:relative}
.path-step:not(:last-child)::after{content:'';position:absolute;left:19px;top:44px;bottom:-12px;width:2px;background:var(--gray-200)}
.path-step .step-dot{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;z-index:1;border:3px solid #fff;box-shadow:0 0 0 2px var(--gray-200)}
.path-step.active .step-dot{background:var(--primary);color:#fff;box-shadow:0 0 0 2px var(--primary)}
.path-step.done .step-dot{background:var(--success);color:#fff;box-shadow:0 0 0 2px var(--success)}
.path-step .step-info{flex:1;padding-bottom:16px}
.path-step .step-info h4{font-size:14px;font-weight:600;margin-bottom:2px}
.path-step .step-info p{font-size:12px;color:var(--gray-500)}
@media(max-width:1024px){.dashboard-grid{grid-template-columns:repeat(2,1fr)}.topbar-search{width:180px}}
@media(max-width:768px){:root{--sidebar-w:0px}.sidebar{transform:translateX(-100%);width:260px}.sidebar.open{transform:translateX(0)}.main{margin-left:0}.menu-toggle{display:block}.topbar-search{display:none}.dashboard-grid{grid-template-columns:1fr}.card-grid{grid-template-columns:1fr}.content{padding:16px}}