#shipping-calculator-module {
    border: 1px solid #ddd;
    border-radius: 10px;
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 15px 20px;
    max-width: 350px;
    margin: 25px 0 0;
    transition: box-shadow 0.3s ease;
}

#shipping-calculator-module:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

#shipping-calculator-module h4 {
    margin: 0;
    cursor: pointer;
    font-size: 16px;
    color: #333;
    position: relative;
    padding-right: 25px;
    user-select: none;
    transition: color 0.3s ease;
}

#shipping-calculator-module h4::after {
    content: "▼";
    position: absolute;
    right: 0;
    top: 0;
    font-size: 14px;
    line-height: 1;
    transition: transform 0.4s ease;
}

#shipping-calculator-module h4.active {
    color: #222;
}

#shipping-calculator-module h4.active::after {
    transform: rotate(-180deg);
}

#shipping-calculator-module .sc-box {
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    padding: 0;
    transition: max-height 0.6s ease, opacity 0.6s ease, padding 0.4s ease;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.05);
    border-top: 1px solid #eee;
    margin-top: 10px;
    border-radius: 0 0 8px 8px;
    background: linear-gradient(180deg, #f9f9f9 0%, #ffffff 100%);
}

#shipping-calculator-module .sc-box.open {
    max-height: 500px; /* 足够内容高度 */
    opacity: 1;
    padding: 10px 0 0 0;
}

#shipping-calculator-module .sc-box label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

#shipping-calculator-module .sc-box select {
    width: 100%;
    padding: 6px 10px;
    margin-bottom: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 14px;
}

#shipping-calculator-module .sc-results p {
    margin: 5px 0;
    font-size: 14px;
    display: flex;
    justify-content: space-between;
}

#shipping-calculator-module .sc-results strong {
    color: #222;
    font-weight: bold;
}