* {
    margin: 0;
    padding: 0;
}
.box {
    background: #ffffff;
}

/* 主要内容 */
main {
    box-sizing: border-box;
    background-color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

main section {
    display: flex;
    align-items: center;
    justify-content: center;
}

main section h2 {
    /* width: 60%; */
    font-family: Helvetica, Helvetica;
    font-weight: bold;
    font-size: 40px;
    color: #3f2f2f;
    line-height: 60px;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    text-align: center;
    margin: 60px 0;
}

/* Manufacturing Process */
.manufacturing-process {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 20px;
    box-sizing: border-box;
}

.manufacturing-process h2 {
    font-family: Helvetica;
    font-size: 22px;
    color: #333333;
    line-height: 26px;
    letter-spacing: 1px;
    margin: 37px 0 15px;
    text-align: center;
}

.manufacturing-process .subtitle {
    font-family: Helvetica;
    font-size: 18px;
    color: #555555;
    line-height: 28px;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    text-align: center;
    width: 70%;
    margin-bottom: 20px;
}

.process-container {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 30px;
    margin: 40px 0;
    padding: 0 20px;
    box-sizing: border-box;
    width: 90%;
    /* max-width: 1200px; */
}

.process-item {
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    width: calc(50% - 15px);
    /* background-color: #f9f9f9; */
    border-radius: 10px;
    padding: 25px;
    box-sizing: border-box;
    /* box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05); */
    /* transition: transform 0.3s ease, box-shadow 0.3s ease; */
}

/* .process-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
} */

.process-item img {
    width: 262px;
    height: 237px;
    object-fit: contain;
    margin-right: 30px;
    border-radius: 8px;
}

.process-item .right {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
}

.process-item .right .content-title {
    font-family: Helvetica, Helvetica;
    font-weight: bold;
    font-size: 22px;
    color: #333333;
    line-height: 30px;
    letter-spacing: 0.5px;
    margin-bottom: 15px;
    position: relative;
    padding-bottom: 10px;
}

/* .process-item .right .content-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: #ae4848;
    border-radius: 2px;
} */

.process-item .right .content {
    font-family: Helvetica;
    font-size: 16px;
    color: #555555;
    line-height: 24px;
    letter-spacing: 0.5px;
    text-align: left;
}

.process-item .right .content .content-item {
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    margin-bottom: 12px;
}

.process-item .right .content .content-item:last-child {
    margin-bottom: 0;
}

.process-item .right .content .content-item .dot {
    width: 10px;
    height: 10px;
    background: #ae4848;
    border-radius: 5px;
    margin-right: 15px;
    margin-top: 7px;
    flex-shrink: 0;
}

.process-item .right .content .content-item .content-info {
    flex: 1;
}
.choose-us-p {
    font-family: Helvetica;
    font-size: 18px;
    color: #555555;
    line-height: 28px;
    letter-spacing: 1px;
    text-align: left !important;
    width: 100%;
    margin-bottom: 20px !important;
}

/* Why Choose Us */
.choose-us {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    margin: 60px 0;
    padding: 0 76px;
    box-sizing: border-box;
    background: #ffffff;
}

.choose-us h2 {
    width: 70%;
    font-family: Helvetica, Helvetica;
    font-weight: bold;
    font-size: 40px;
    color: #3f2f2f;
    line-height: 60px;
    margin-bottom: 15px;
    text-align: center;
}

.choose-us .content-box {
    margin: 76px 0;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}

.choose-us .content-box .left {
    flex: 0 0 calc(50% - 50px);
    position: relative;
}

.choose-us .content-box .left .img-left {
    margin-bottom: 20px;
    width: 100%;
    height: auto;
}

.choose-us .content-box .right {
    flex: 0 0 calc(50% - 10px);
    font-family: Helvetica;
    font-size: 18px;
    color: #555555;
    line-height: 30px;
    letter-spacing: 1px;
}

.explore-box {
    width: 100%;
    padding: 20px 160px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    background: #f3f3f3;
}

.explore-box h2 {
    font-family: Helvetica;
    font-size: 22px;
    color: #333333;
    line-height: 26px;
    letter-spacing: 1px;
    margin-bottom: 40px;
    text-align: center;
}

@media (max-width: 1200px) {
    .process-item {
        width: 100%;
        padding: 12px;
        flex-direction: column;
        align-items: center;
    }

    .process-item img {
        width: 120px;
        height: 100px;
        margin-right: 0;
        margin-bottom: 10px;
    }

    .process-item .right {
        width: 100%;
        align-items: center;
    }

    .process-item .right .content-title {
        font-size: 16px;
        line-height: 24px;
        text-align: center;
    }

    /* .process-item .right .content-title::after {
        left: 50%;
        transform: translateX(-50%);
    } */

    .process-item .right .content {
        font-size: 13px;
        line-height: 18px;
        text-align: center;
    }

    .process-item .right .content .content-item {
        margin-bottom: 8px;
    }

    .process-item .right .content .content-item .dot {
        width: 6px;
        height: 6px;
        margin-top: 4px;
        margin-right: 10px;
    }
}

/* 响应式适配：小屏幕下堆叠排列 */
@media (max-width: 768px) {
    /* Header响应式优化 */
    header {
        padding: 0 15px;
        height: auto;
        min-height: 70px;
    }

    header .left img {
        width: 50px;
        height: 40px;
        margin-right: 10px;
    }

    header .left h1 {
        font-size: 14px;
        line-height: 16px;
        max-width: 200px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    header .right .phone {
        margin-right: 10px;
    }

    header .right .phone img {
        width: 18px;
        height: 18px;
        margin-right: 5px;
    }

    header .right .phone p {
        font-size: 12px;
        line-height: 14px;
    }

    header .right .language img {
        width: 18px;
        height: 18px;
        margin-right: 5px;
    }

    header .right .language p {
        width: 30px;
        height: 25px;
        font-size: 12px;
        line-height: 20px;
        margin-right: 5px;
    }

    /* Nav响应式优化 */
    nav {
        height: auto;
        padding: 10px 0;
    }

    nav ul {
        width: 95%;
        flex-wrap: wrap;
    }

    nav ul li a {
        margin-right: 15px;
        margin-bottom: 5px;
        font-size: 14px;
    }

    /* Manufacturing Process响应式优化 - 中等屏幕 */
    .manufacturing-process {
        padding: 0 15px;
    }

    .manufacturing-process h2 {
        font-size: 20px;
        line-height: 24px;
    }

    .manufacturing-process .subtitle {
        font-size: 16px;
        line-height: 24px;
        width: 85%;
    }

    .process-container {
        padding: 0 15px;
        gap: 20px;
        margin: 30px 0;
    }

    /* Why Choose Us响应式优化 - 中等屏幕 */
    .choose-us {
        margin: 40px 0;
    }

    .choose-us h2 {
        font-size: 20px;
        line-height: 24px;
    }

    .choose-us p {
        font-size: 16px;
        line-height: 24px;
        width: 80%;
    }

    .choose-us .content-box {
        flex-direction: column;
    }

    .choose-us .content-box .left {
        position: relative;
        width: 100%;
        margin-bottom: 20px;
    }

    .choose-us .content-box .left .img-left {
        width: 100%;
        /* height: 338px; */
        margin-bottom: 15px;
        object-fit: contain;
    }

    .choose-us .content-box .right {
        width: 100%;
        font-size: 16px;
        line-height: 24px;
    }
    /* About-us-tag响应式优化 - 中等屏幕 */
    .about-us {
        padding: 40px 20px;
    }

    /* Video-box响应式优化 - 中等屏幕 */
    .video-box {
        padding: 20px 40px;
        margin: 40px 0;
    }

    .video-box video {
        min-height: 250px;
    }

    /* Explore-box响应式优化 - 中等屏幕 */
    .explore-box {
        padding: 20px 40px;
    }

    .explore-box h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }

    /* Footer响应式优化 */
    .footer-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-brand {
        margin-bottom: 20px;
    }
}

/* 超小屏幕适配 */
@media (max-width: 500px) {
    header .left h1 {
        max-width: 120px;
        font-size: 12px;
    }

    header .right .phone {
        display: none; /* 在极小屏幕隐藏电话号码 */
    }

    nav ul {
        width: 100%;
        justify-content: space-around;
    }

    nav ul li a {
        margin-right: 5px;
        font-size: 12px;
    }

    /* Manufacturing Process响应式优化 - 小屏幕 */
    .manufacturing-process {
        padding: 0 10px;
    }

    .manufacturing-process h2 {
        font-size: 18px;
        line-height: 22px;
    }

    .manufacturing-process .subtitle {
        font-size: 15px;
        line-height: 22px;
        width: 90%;
    }

    .process-container {
        flex-direction: column;
        padding: 0 10px;
        gap: 15px;
        margin: 25px 0;
    }

    /* Why Choose Us响应式优化 - 小屏幕 */
    .choose-us {
        margin: 30px 0;
    }

    .choose-us h2 {
        font-size: 18px;
        line-height: 22px;
    }

    .choose-us p {
        font-size: 14px;
        line-height: 20px;
        width: 90%;
    }
    /* About-us-tag响应式优化 - 小屏幕 */
    .about-us {
        padding: 30px 15px;
    }
}

/* 极小屏幕适配 */
@media (max-width: 320px) {
    /* Manufacturing Process响应式优化 - 极小屏幕 */
    .manufacturing-process {
        padding: 0 8px;
    }

    .manufacturing-process h2 {
        font-size: 16px;
        line-height: 20px;
    }

    .manufacturing-process .subtitle {
        font-size: 14px;
        line-height: 20px;
        width: 95%;
    }

    .process-container {
        flex-direction: column;
        padding: 0 8px;
        gap: 12px;
        margin: 20px 0;
    }

    /* Video-box响应式优化 - 极小屏幕 */
    .video-box {
        padding: 20px 40px;
        margin: 20px 0;
    }

    .video-box video {
        min-height: 180px;
    }

    /* Why Choose Us响应式优化 - 极小屏幕 */
    .choose-us {
        margin: 20px 0;
    }

    .choose-us h2 {
        font-size: 16px;
        line-height: 20px;
    }

    .choose-us p {
        font-size: 14px;
        line-height: 18px;
        width: 95%;
    }

    .choose-us .content-box {
        flex-direction: column;
    }

    .choose-us .content-box .left {
        position: relative;
        width: 100%;
        margin-bottom: 20px;
    }

    .choose-us .content-box .left .img-left {
        width: 100%;
        height: auto;
        margin-bottom: 15px;
    }

    .choose-us .content-box .right {
        width: 100%;
        font-size: 14px;
        line-height: 18px;
    }
}