.container {
        max-width: 1200px;
        margin: 30px auto;
        padding: 0 15px;
        display: grid;
        grid-template-columns: 1fr;
        gap: 25px;
    }

    @media (min-width: 768px) {
        .container {
            grid-template-columns: 2fr 1fr;
        }
    }

    /* 卡片样式 */
    .card {
        background: white;
        border-radius: 16px;
        padding: 25px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        transition: all 0.3s ease;
    }

    .card:hover {
        box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    }

    h1 {
        font-size: 1.8rem;
        color: #2655ff;
        margin-bottom: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    h1 i {
        margin-right: 10px;
    }

    /* 表单样式 */
    .form-group {
        margin-bottom: 15px;
    }

    label {
        display: block;
        font-weight: 500;
        margin-bottom: 8px;
    }

    select, input {
        width: 100%;
        padding: 10px 15px;
        border: 1px solid #ddd;
        border-radius: 8px;
        font-size: 1rem;
        transition: all 0.3s ease;
    }

    select:focus, input:focus {
        outline: none;
        border-color: #2655ff;
        box-shadow: 0 0 0 3px rgba(0, 47, 167, 0.1);
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 12px 20px;
        border: none;
        border-radius: 8px;
        font-size: 1rem;
        font-weight: 500;
        cursor: pointer;
        transition: all 0.3s ease;
        text-align: center;
        width: 100%;
    }

    .btn-primary {
        background-color: #2655ff;
        color: white;
    }

    .btn-primary:hover {
        background-color: #00237d;
        transform: translateY(-2px);
    }

    .btn-secondary {
        background-color: #4CAF50;
        color: white;
    }

    .btn-secondary:hover {
        background-color: #388e3c;
        transform: translateY(-2px);
    }

    .btn-error {
        background-color: #e74c3c;
        color: white;
    }

    .btn-error:hover {
        background-color: #c0392b;
        transform: translateY(-2px);
    }

    .btn:disabled {
        opacity: 0.7;
        cursor: not-allowed;
        transform: none;
    }

    /* 表格样式 */
    .result {
        margin-top: 25px;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin-top: 15px;
    }

    th, td {
        padding: 12px 15px;
        text-align: left;
        border-bottom: 1px solid #eee;
    }

    th {
        background-color: #2655ff;
        color: white;
        font-weight: 500;
    }

    tr:nth-child(even) {
        background-color: #f8f9fa;
    }

    /* 其他元素样式 */
    .update-time {
        font-weight: 500;
        color: #666;
        margin-bottom: 15px;
    }

    .error-message {
        color: #e74c3c;
        background-color: #fdf7f7;
        border-left: 4px solid #e74c3c;
        padding: 12px;
        margin: 15px 0;
        border-radius: 0 4px 4px 0;
    }

    .calculator-result {
        margin-top: 20px;
        padding: 15px;
        background-color: #f5f5f5;
        border-radius: 8px;
    }

    .calculator-result h3 {
        margin-bottom: 10px;
    }

    .calculator-result p {
        margin-bottom: 8px;
    }

    .calculator-result strong {
        color: #2655ff;
    }

    .loader {
        display: inline-block;
        width: 16px;
        height: 16px;
        border: 2px solid #f3f3f3;
        border-radius: 50%;
        border-top: 2px solid white;
        animation: spin 1s linear infinite;
        margin-right: 8px;
    }

    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }
/*导出按钮*/
    .export-btn {
        display: block;
        border-radius: 4px;
        background-color: #2655ff;
        border: none;
        color: #FFFFFF !important;
        text-align: center;
        font-size: 16px;
        padding: 10px;
        width: 100%;
        max-width: 600px;
        transition: all 0.5s;
        cursor: pointer;
        margin: 15px auto;
    }
    .export-btn span {
        cursor: pointer;
        display: inline-block;
        position: relative;
        transition: 0.5s;
    }