.section-1-content .phone-input-container {
    position: relative;
    width: 320px;
    height: 50px;
    border-radius: 6px;
    padding: 0 10px;
    outline: none;
    border: none;
    background-color: rgba(255, 255, 255, 0.4);
    color: var(--white);
    font-size: 18px;
    padding-left: 48px;
    background-repeat: no-repeat;
    margin: 0 8px;
    transition: background-color 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.4);
    display: flex;
    background-image: url(../images/phone.png);
    background-size: 26px 30px;
    background-position: 10px center;
}

.section-1-content .phone-input-container .phone-input::placeholder {
    color: var(--white);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    font-size: 18px;
}
.section-1-content .phone-input-container .phone-input:focus::placeholder {
    transform: translateY(-130%) scale(0.8);
    opacity: 0;
  }

 .section-1-content .area-code-select {
    width: 120px;
    height: 100%;
    border: none;
    background: transparent;
    color: #fff;
    font-size: 16px;
    padding: 0 10px 0 0;
    outline: none;
    cursor: pointer;
    position: relative;
    -webkit-appearance: none;
    appearance: none;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="6" viewBox="0 0 12 6"><path fill="white" d="M0 0l6 6 6-6z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 25px;
}

.section-1-content .area-code-select option {
    background: #333;
    color: #fff;
    padding: 5px 0;
}

.section-1-content .phone-input {
    flex: 1;
    border: none;
    background: transparent;
    color: #fff;
    font-size: 16px;
    padding: 0 15px 0;
    outline: none;
    height: 100%;
}



/* 移除默认的select样式 */
.section-1-content .area-code-select::-ms-expand {
    display: none;
}