.cooperation {
            background: #fff;
        }

        .form-tabs {
            display: flex;
            gap: 12px;
            margin-bottom: 32px;
        }

        .form-tab {
            padding: 10px 24px;
            background: #f3f4f6;
            border: none;
            border-radius: 6px;
            font-size: 14px;
            color: #646a73;
            cursor: pointer;
            transition: all 0.2s;
        }

        .form-tab.active {
            background: #3b82f6;
            color: #fff;
        }

        .form-tab:hover:not(.active) {
            background: #e5e7eb;
        }

        .form-panel {
            display: none;
        }

        .form-panel.active {
            display: block;
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            color: #374151;
            margin-bottom: 6px;
            font-weight: 500;
        }

        .form-group label span {
            color: #ef4444;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 10px 12px;
            border: 1px solid #d1d5db;
            border-radius: 6px;
            font-size: 14px;
            color: #1f2329;
            background: #fff;
            transition: border-color 0.2s;
        }

        .radio-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .radio-group input[type="radio"] {
            position: absolute;
            opacity: 0;
            width: 0;
            height: 0;
        }

        .radio-group label.radio-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 400;
            color: #374151;
            margin-bottom: 0;
            padding: 6px 12px;
            border-radius: 6px;
            transition: all 0.2s;
        }

        .radio-group label.radio-item .radio-box {
            width: 18px;
            height: 18px;
            border: 2px solid #d1d5db;
            border-radius: 3px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
            flex-shrink: 0;
            background: #fff;
        }

        .radio-group input[type="radio"]:checked + label.radio-item {
            background: #eff6ff;
            color: #3b82f6;
        }

        .radio-group input[type="radio"]:checked + label.radio-item .radio-box {
            background: #3b82f6;
            border-color: #3b82f6;
        }

        .radio-group input[type="radio"]:checked + label.radio-item .radio-box::after {
            content: '';
            width: 6px;
            height: 10px;
            border: solid #fff;
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
            margin-top: -2px;
        }

        .radio-group label.radio-item:hover {
            background: #f3f4f6;
        }

        .radio-group label.radio-item:hover .radio-box {
            border-color: #3b82f6;
        }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: #3b82f6;
        }

        .form-submit {
            margin-top: 24px;
            padding: 12px 32px;
            background: #3b82f6;
            color: #fff;
            border: none;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: background 0.2s;
        }

        .form-submit:hover {
            background: #2563eb;
        }

        /* 悬浮联系图标 */

@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-tabs {
        flex-wrap: wrap;
    }
}