:root{
    --section-ptb: clamp(3rem, 2.5rem + 2.5vw, 5rem);
}

/* banner */
.full-banner {
    position: relative;
    width: 100%;
    height: 500px; 
    overflow: hidden;
    background-color: #f4f4f4;
}
.full-banner picture,
.full-banner .banner-img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
}
.banner-layout-lock {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

@media (max-width: 768px) {
    .full-banner {
        height: 553px;
    }
}

/* 产品版块 */
.section-product {
    width: 100%;
    padding: var(--section-ptb) 0;
    background-color: #ffffff;
}
.section-header{width: 100%; margin-bottom:60px;}
.section-title {
    font-family: "bebas-neue-pro", sans-serif;
    font-size: clamp(2rem, 1.625rem + 1.88vw, 3.5rem);
    font-weight: 800;
    color: #000000;
    text-align: center;
    line-height: 1.3;
    margin-bottom: 50px;
}
.section-title.subtitle{
    margin: 0 0 15px 0;
}
.section-subtitle { font-size: 14px; line-height: 1.6; color: #000000; margin:0; text-align: center; }
.product-grid {
    display: grid;
    grid-template-columns: minmax(0,1fr);
    gap:clamp(15px, 0.938rem + 1.25vw, 30px)
}
@media (min-width: 768px){
.product-grid {
    grid-template-columns: repeat(2, minmax(0,1fr));
}
}

.product-card {
    display: flex;
    background-color: #f5f5f5;
    overflow: hidden;
}
.card-left {
    width: 40%;
}
.card-left img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}
.card-right {
    width: 60%;
    height: auto;
    padding: clamp(14px, 4vw, 20px) 12px; 
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
@media (min-width: 768px){
.card-left {
    width: 263px;
    height: 391px;
}
.card-left img {
    display: block;
    width: 263px;
    height: 391px;
    object-fit: cover;
}
.card-right {
    flex: 1;
    min-width: 0;
    height: 100%;
    padding: 30px 20px 25px 25px;
}
}
.card-title {
    font-size: 16px;
    color: #333333;
    margin: 0 0 12px 0;
    font-family: Arial, sans-serif;
}
.card-title span { font-weight: bold; color: #000000; }
.card-specs { list-style: none; padding: 0; margin: 0 0 20px 0; flex-grow: 1; }
.card-specs li {
    font-size: 14px;
    line-height: 1.5;
    color: #555555;
    margin-bottom: 6px;
}
.card-specs li strong { color: #333333; }
.card-btn {
    display: block;
    width: 210px;
    height: 36px;
    line-height: 36px;
    background-color: #FFC300;
    color: #000000;
    font-size: 13px;
    font-weight: bold;
    text-align: center;
    transition: background-color 0.2s ease;
    font-family: Arial, sans-serif;
}
.card-btn:hover { background-color: #e6b800; color: #000000; text-decoration: none; }

/* 服务板块 */
.section-services {
    width: 100%;
    padding: var(--section-ptb) 0;
    background-color: #e8e8e8;
}
.services-wrapper {
    width: 100%;
    display: flex;
    margin-bottom: 40px;
}
.services-media {
    display: none;
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}
.service-card {
    position: relative;
    border-radius: 25px; 
    background-color: #ffffff;
    
    padding: 30px 20px 20px 20px;
    
}
.service-num {
    font-size: 50px;
    font-weight: 800;
    color: #593c1f;
    line-height: 1;
    font-family: "bebas-neue-pro", sans-serif;
    position: absolute;
    left: 20px;
    top: -25px;
}
.service-card-title {
    font-family: "bebas-neue-pro", sans-serif;
    font-size: 1.5em;
    font-weight: 700;
    color: #222222;
    line-height: 1.2;
    margin-bottom: 8px;
}
.service-card-desc {
    font-size: 13px;
    line-height: 1.5;
    color: #666666;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
@media (min-width: 768px){
    .services-media {
        display: block;
        width: 500px;
        height: 555px;
        margin-right: 31px;
        overflow: hidden;
    }
    .services-media img {
        display: block;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .services-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        column-gap: 30px; 
        row-gap: 51px; 
    }
    .service-card {
        position: relative;
        background-color: #ffffff;
        border-radius: 25px; 
        padding: 30px 20px 20px 20px;
        
    }
}
.services-action { text-align: center; }
.services-btn {
    display: inline-block;
    padding: .6rem 2rem;
    background-color: #FFC300;
    color: #000000;
    font-size: 1.2rem;
    font-weight: bold;
    text-align: center;
    transition: background-color 0.2s ease;
    font-family: Arial, sans-serif;
}
.services-btn:hover { background-color: #e6b800; color: #000000; text-decoration: none; }

/* 售后服务 */
.section-support {
    width: 100%;
    padding: 70px 0;
    background-color: #ffffff;
}
.support-flex-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    row-gap: 30px;
    margin-bottom: 50px;
}
.support-row {
    display: flex;
    width: 100%;
    flex-direction: column;
    gap: 30px;
    margin-left: auto;
    margin-right: auto;
}
.row-top { justify-content: flex-start; }
.row-bottom { justify-content: center; }
.support-card {
    display: flex;
    flex: 1;
    min-width: 0;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.support-media {overflow: hidden; width: 100%; }
.support-media img { display: block; width: 100%; height: 224px; object-fit: cover; }
.support-content { width: 100%; padding: 0 10px; }
.support-card-title {
    font-family: "bebas-neue-pro", sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: #222222;
    line-height: 1;
    margin: 12px 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.support-card-desc {
    font-size: 13px;
    line-height: 1.5;
    color: #666666;
    margin: 0;
    font-family: Arial, sans-serif;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
@media (min-width: 768px){
    .support-row {
        flex-direction: row;
    }
}

/* 选择我们 */
.section-choose-us {
    width: 100%;
    padding: 65px 0;
    background-color: #FFC300;
}
.choose-us-row { width: 100%; display: flex; justify-content: space-between; margin-bottom: 45px; flex-direction: column;gap: 30px; }
.choose-card {
    display: flex;
    flex: 1;
    flex-direction: column;
    background: linear-gradient(180deg, rgba(79, 41, 0, 0.73) 0%, rgba(36, 19, 1, 1) 100%);
    padding: 30px 15px 25px 15px; 
    justify-content: space-between;
    text-align: center;
    gap: 10px;
}
.choose-card-top { width: 100%; display: flex; flex-direction: column; align-items: center; }
.choose-icon-box { height: 50px; display: flex; align-items: center; justify-content: center; margin-bottom: 15px; }
.choose-icon-box img { display: block; height: 50px; width: auto; object-fit: contain; }
.choose-card-title { font-size: 1rem; font-weight: 700; color: #ffffff; line-height: 1.3; margin: 0; }
.choose-card-desc {
    font-size: 11.5px;
    line-height: 1.5;
    color: #cccccc;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.choose-us-action { text-align: center; }
.choose-btn-black {
    display: inline-block;
    background-color: #000000;
    padding: .6rem 2rem;
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: bold;
    text-align: center;
    transition: background-color 0.2s ease;
}
.choose-btn-black:hover { background-color: #222222; color: #ffffff; text-underline-thickness: 0; }
@media (min-width: 768px){
    .choose-us-row { flex-direction: row;}
}

/* 视频板块 (精简优化后的纯净多层联动) */
.section-project-footage {
    width: 100%;
    padding: 60px 0;
    background-color: #ffffff; 
}
.footage-row {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 40px;
}
.footage-row .video-card{
    flex: 1;
    min-width: 0;
}
@media (min-width: 768px){
    .footage-row{
        flex-direction: row;
    }
}

/* 联系我们 */
.section-contact{
    width: 100%;
    padding: 60px 0;
    background-color: #f2f2f2;
}
.quote-wrapper{
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem; 
    align-items: center;
}
@media (min-width:1200px) {
.quote-wrapper {
    grid-template-columns: 1fr 2fr;
    gap: 6rem;
}
}
.quote-wrapper a,.quote-wrapper a:hover{color: #666; text-decoration: none;}
.quote-features {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}
.quote-features .feature-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.quote-features .feature-icon {
    width: 60px;
    height: 60px;
    min-width: 60px;
    border: 1px solid rgba(112, 112, 112, 1);
    background-color: #333;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.quote-features .feature-icon .iconfont{
    color: #FFC300;
    font-size: 30px;
}
.quote-features .feature-text h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #333;
    margin: 0 0 0.3rem 0;
    font-family: Arial, sans-serif;
}

.quote-features .feature-text p {
    font-size: 13px;
    color: #666;
    margin: 0;
    font-family: Arial, sans-serif;
}