:root{--primary: #1a73e8;--primary-dark: #1557b0;--primary-light: #e8f0fe;--accent: #34a853;--warn: #ea4335;--orange: #f9ab00;--bg: #f8f9fa;--surface: #ffffff;--border: #dadce0;--text: #202124;--text-secondary: #5f6368;--radius: 12px;--shadow: 0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);--shadow-lg: 0 4px 12px rgba(0,0,0,.15);--transition: .2s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1200px;margin:0 auto;padding:0 24px}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin-bottom:16px;transition:box-shadow var(--transition)}.card:hover{box-shadow:var(--shadow-lg)}.card-header{display:flex;align-items:center;gap:12px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}.card-header h2{font-size:18px;font-weight:600;color:var(--text)}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border:none;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:all var(--transition);font-family:inherit}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}.btn-success{background:var(--accent);color:#fff}.btn-success:hover:not(:disabled){background:#2d8e47}.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}.btn-outline:hover:not(:disabled){background:var(--primary-light)}.btn-sm{padding:6px 14px;font-size:13px}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-control{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;transition:border-color var(--transition)}.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #1a73e81a}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--border)}th{font-weight:600;color:var(--text-secondary);font-size:12px;text-transform:uppercase;letter-spacing:.5px;background:var(--bg)}tr:hover td{background:var(--primary-light)}.badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:500}.badge-success{background:#e6f4ea;color:#137333}.badge-warn{background:#fef7e0;color:#b06000}.badge-info{background:var(--primary-light);color:var(--primary)}.badge-error{background:#fce8e6;color:#c5221f}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:48px 24px;text-align:center;cursor:pointer;transition:all var(--transition);background:var(--bg)}.upload-zone:hover,.upload-zone.dragover{border-color:var(--primary);background:var(--primary-light)}.upload-zone .material-icons{font-size:48px;color:var(--primary);margin-bottom:12px}.upload-zone p{color:var(--text-secondary);font-size:14px}.progress-bar{height:6px;background:#e8eaed;border-radius:3px;overflow:hidden;margin:12px 0}.progress-bar .fill{height:100%;background:var(--primary);border-radius:3px;transition:width .3s ease}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.alert{padding:12px 16px;border-radius:8px;font-size:14px;margin-bottom:12px;display:flex;align-items:center;gap:10px}.alert-success{background:#e6f4ea;color:#137333}.alert-error{background:#fce8e6;color:#c5221f}.alert-info{background:var(--primary-light);color:var(--primary)}.navbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 24px;height:56px;display:flex;align-items:center;position:sticky;top:0;z-index:100;box-shadow:var(--shadow)}.navbar .logo{font-size:18px;font-weight:700;color:var(--primary);margin-right:32px}.navbar nav{display:flex;gap:4px}.navbar nav a{padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;color:var(--text-secondary);transition:all var(--transition)}.navbar nav a:hover{background:var(--bg);color:var(--text);text-decoration:none}.navbar nav a.active{background:var(--primary-light);color:var(--primary)}.page{padding:24px 0}.page-title{font-size:24px;font-weight:700;margin-bottom:24px;color:var(--text)}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:1fr 1fr 1fr}@media (max-width: 768px){.grid-2,.grid-3{grid-template-columns:1fr}.container{padding:0 16px}}.hint-box{background:linear-gradient(135deg,#e8f0fe,#f0f7ff);border:1px solid rgba(26,115,232,.2);border-radius:var(--radius);padding:16px 20px;margin-bottom:20px;font-size:14px;line-height:1.6;color:var(--text)}.hint-box strong{color:var(--primary)}.hint-box ol,.hint-box ul{margin:8px 0 0 20px;padding:0}.hint-box li{margin:4px 0}.hint-box .hint-title{display:flex;align-items:center;gap:8px;font-weight:600;margin-bottom:8px;color:var(--primary)}.hint-box .hint-title .material-icons{font-size:20px}.empty-state{text-align:center;padding:48px 24px;color:var(--text-secondary)}.empty-state .material-icons{font-size:64px;margin-bottom:16px;opacity:.3}.empty-state h3{font-size:18px;margin-bottom:8px}