:root{--bg: #eef2f9;--bg-grad-1: #e3ecff;--bg-grad-2: #f6f8ff;--surface: #ffffff;--surface-2: #f4f7fd;--border: #dde4f0;--text: #16223a;--text-muted: #5b6b85;--primary: #2563eb;--primary-strong: #1d4ed8;--accent: #06b6d4;--success: #10b981;--danger: #ef4444;--warning: #f59e0b;--glow: rgba(37, 99, 235, .16);--shadow: 0 4px 20px rgba(30, 60, 120, .08);--sidebar-bg: linear-gradient(180deg, #1e2a52, #16203f);--sidebar-text: #cbd5f0;--sidebar-active: #2b3f7a;--chart-text: #16223a}[data-theme=dark]{--bg: #0b1020;--bg-grad-1: #0d152b;--bg-grad-2: #0a0f20;--surface: #141c34;--surface-2: #1a2440;--border: #25304f;--text: #e6ecff;--text-muted: #8b98b8;--primary: #3b82f6;--primary-strong: #60a5fa;--accent: #22d3ee;--success: #34d399;--danger: #f87171;--warning: #fbbf24;--glow: rgba(59, 130, 246, .3);--shadow: 0 6px 24px rgba(0, 0, 0, .45);--sidebar-bg: linear-gradient(180deg, #10172e, #0b1124);--sidebar-text: #a7b4d8;--sidebar-active: #22305c;--chart-text: #e6ecff}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:Segoe UI,PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:var(--text);background:var(--bg);background-image:radial-gradient(1200px 600px at 20% -10%,var(--bg-grad-1),transparent),radial-gradient(1000px 500px at 100% 0%,var(--bg-grad-2),transparent);background-attachment:fixed;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}.app-shell{display:flex;min-height:100vh}.sidebar{width:230px;flex-shrink:0;background:var(--sidebar-bg);color:var(--sidebar-text);padding:20px 14px;display:flex;flex-direction:column;gap:4px;position:sticky;top:0;height:100vh;overflow-y:auto}.sidebar .logo{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:800;color:#fff;margin-bottom:16px;padding:0 8px;letter-spacing:1px}.sidebar .logo span{color:var(--accent)}.sidebar .logo-icon{width:26px;height:26px;border-radius:7px;flex-shrink:0}.menu-toggle,.sidebar-mask{display:none}.nav-item{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;color:var(--sidebar-text);cursor:pointer;font-size:14px;transition:background .18s,color .18s;border:none;background:transparent;width:100%;text-align:left}.nav-item:hover{background:#ffffff14;color:#fff}.nav-item.active{background:var(--sidebar-active);color:#fff}.nav-section{font-size:11px;text-transform:uppercase;letter-spacing:1px;opacity:.55;padding:14px 8px 4px}.main-area{flex:1;display:flex;flex-direction:column;min-width:0}.topbar{height:60px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.topbar .title{font-size:16px;font-weight:700}.topbar .right{display:flex;align-items:center;gap:14px}.content{padding:24px;max-width:1280px;width:100%;margin:0 auto}.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:20px;box-shadow:var(--shadow)}.card+.card{margin-top:16px}.card-title{font-size:16px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}.grid{display:grid;gap:16px}.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}.grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.grid.cols-4{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.stat{padding:18px;border-radius:14px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow)}.stat .label{font-size:13px;color:var(--text-muted)}.stat .value{font-size:28px;font-weight:800;margin-top:6px}.stat .value.red{color:var(--primary)}.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:9px;border:1px solid transparent;cursor:pointer;font-size:14px;font-weight:600;transition:all .15s;background:var(--surface-2);color:var(--text)}.btn:hover{filter:brightness(.96)}.btn.primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff}.btn.primary:hover{box-shadow:0 4px 16px var(--glow)}.btn.danger{background:var(--danger);color:#fff}.btn.success{background:var(--success);color:#fff}.btn.sm{padding:6px 12px;font-size:13px}.btn:disabled{opacity:.5;cursor:not-allowed}.input,select.input,textarea.input{width:100%;padding:10px 12px;border-radius:9px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-size:14px;outline:none;transition:border .15s,box-shadow .15s}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--glow)}.input:disabled,select.input:disabled{opacity:.75;cursor:not-allowed;color:var(--text-muted);background:var(--surface);border-style:dashed}textarea.input{min-height:80px;resize:vertical;font-family:inherit}.field{margin-bottom:14px}.field label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:6px;font-weight:600}.table{width:100%;border-collapse:collapse;font-size:14px}.table th,.table td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--border)}.table th{color:var(--text-muted);font-weight:700;font-size:13px}.table tr:hover td{background:var(--surface-2)}.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600}.badge.blue{background:#2563eb24;color:var(--primary-strong)}.badge.green{background:#10b98126;color:var(--success)}.badge.red{background:#ef444424;color:var(--danger)}.badge.amber{background:#f59e0b26;color:var(--warning)}.badge.gray{background:var(--surface-2);color:var(--text-muted)}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.spread{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.mt{margin-top:16px}.mb{margin-bottom:16px}.muted{color:var(--text-muted);font-size:13px}.h1{font-size:22px;font-weight:800}.h2{font-size:18px;font-weight:700}.empty{padding:40px;text-align:center;color:var(--text-muted)}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.modal{background:var(--surface);border-radius:14px;padding:24px;width:100%;max-width:560px;max-height:88vh;overflow-y:auto;box-shadow:var(--shadow)}.toast-wrap{position:fixed;top:20px;right:20px;z-index:200;display:flex;flex-direction:column;gap:10px}.toast{padding:12px 18px;border-radius:10px;color:#fff;font-size:14px;box-shadow:var(--shadow);animation:slideIn .25s}.toast.info{background:var(--primary)}.toast.success{background:var(--success)}.toast.error{background:var(--danger)}@keyframes slideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:none}}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);background-image:radial-gradient(900px 500px at 15% 20%,var(--bg-grad-1),transparent),radial-gradient(800px 500px at 90% 80%,var(--bg-grad-2),transparent)}.login-card{width:380px;padding:36px}.login-card .brand{font-size:24px;font-weight:800;text-align:center;margin-bottom:6px}.login-card .sub{text-align:center;color:var(--text-muted);margin-bottom:24px;font-size:13px}.question-block{border:1px solid var(--border);border-radius:12px;padding:16px;margin-bottom:14px;background:var(--surface-2)}.option-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:8px;border:1px solid var(--border);margin-top:8px;cursor:pointer;background:var(--surface)}.option-item.selected{border-color:var(--primary);background:var(--glow)}.chart-box{width:100%;height:320px}.flower{color:#f43f5e;font-weight:800}@media (max-width: 800px){.sidebar{position:fixed;top:0;left:0;height:100vh;width:250px;transform:translate(-100%);transition:transform .22s ease;z-index:60;box-shadow:0 0 40px #00000059}.sidebar.open{transform:none}.sidebar-mask{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;z-index:55;animation:fadeIn .2s}.menu-toggle{display:inline-flex}.topbar{height:56px;padding:0 12px;gap:8px}.topbar .title{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar .right{gap:8px}.topbar .right .btn.sm{padding:6px 9px}.content{padding:14px}.h1{font-size:19px}.card{padding:14px}.stat .value{font-size:22px}.chart-box{height:240px}.table{display:block;overflow-x:auto;white-space:nowrap}.table th,.table td{padding:9px 10px;font-size:13px}.login-card{width:100%;max-width:380px;padding:26px 22px}.modal{max-width:100%;padding:18px}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media (max-width: 480px){.topbar .title{max-width:120px}.user-badge,.btn-text{display:none}.grid.cols-2,.grid.cols-3{grid-template-columns:1fr}.grid.cols-4{grid-template-columns:repeat(2,1fr)}}