* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: '微软雅黑', 'Helvetica Neue', Arial, sans-serif;
    margin: 30px;
    background: #f0f2f5;
    color: #333;
}

.container {
    max-width: 2800px;
    margin: 0 auto;
    background: #ffffff;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}

.tax-input {
    margin-bottom: 30px;
    display: flex;
    gap: 25px;
    align-items: center;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 25px 0;
    background: white;
    border-radius: 12px;
    overflow: hidden;
}

th {
    background: #2c3e50;
    color: white;
    padding: 16px;
    font-weight: 600;
}

td {
    padding: 14px;
    border-bottom: 1px solid #eceef1;
    background: #fff;
}

input, select {
    padding: 10px 14px;
    border: 2px solid #e0e3e7;
    border-radius: 8px;
    width: 140px;
}

.process-fee-input {
    width: 120px;
}

button {
    background: #3498db;
    color: white;
    padding: 10px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.total-panel {
    position: fixed;
    bottom: 40px;
    right: 40px;
    background: #fff;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
    min-width: 280px;
}

.total-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.total-price {
    color: #e74c3c;
    font-size: 24px;
    font-weight: 700;
}

#totalWeight {
    color: #3498db;
    font-weight: 500;
}

.row-weight {
    color: #27ae60;
    font-weight: 500;
}

.delete-btn {
    background: #e74c3c;
}

.remark-input {
    width: 220px;
    min-width: 200px;
    padding: 10px;
}

.spec-inputs {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .container {
        padding: 20px;
        margin: 15px;
    }
    
    table {
        display: block;
        overflow-x: auto;
    }
    
    .total-panel {
        bottom: 20px;
        right: 20px;
        left: 20px;
    }
}