/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 48px;
}

/* 导航栏 */
.navbar {
    background: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 40px;
}

.nav-menu {
    display: flex;
    gap: 52px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
    white-space: nowrap;
}

.nav-menu a:hover {
    color: #2E7D32;
}
.mobile-top-inquiry {
    display: none;
}

.btn-contact {
    background: #2E7D32;
    color: #fff !important;
    padding: 10px 22px;
    border-radius: 5px;
    margin-left: 10px;
}
/* 移动端固定询盘按钮：默认隐藏 */
.mobile-contact-btn {
    display: none;
}
/*整体风格*/

/* 英雄区 */
.hero {
    position: relative;
    overflow: hidden;
    color: #fff;
    padding: 90px 0;
    min-height: 560px;
    background: url('首屏图片/高质量产品图.png') center/cover no-repeat;
}

/* 虚化背景层：卡车图片 + 高斯模糊 */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        rgba(0, 0, 0, 0.78) 0%,
        rgba(0, 0, 0, 0.58) 45%,
        rgba(0, 0, 0, 0.25) 100%
    );
    z-index: 1;
}

/* 深色遮罩层，保证文字对比度 */
.hero::after {
    display: none;
}

/* 确保所有内容显示在背景之上 */
.hero > * {
    position: relative;
    z-index: 2;
}

.hero-content {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 50px;
    align-items: center;
}

.hero-subtitle {
    color: #81C784;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.hero h1 {
    font-size: 36px;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero h1 span {
    color: #FFC107;
}

.hero-desc {
    font-size: 16px;
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

.btn-primary {
    background: #2E7D32;
    color: #fff;
    padding: 12px 24px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
    padding: 12px 24px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
}

.hero-features {
    display: flex;
    gap: 14px;
    margin-top: 28px;
    flex-wrap: wrap;
}
/* 数据优势模块 */
.advantage-stats {
    background: #fff;
    padding: 30px 0 40px;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.advantage-card {
    background: linear-gradient(180deg, #ffffff 0%, #f7faf8 100%);
    border: 1px solid #dfe9e2;
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 10px 28px rgba(0,0,0,0.04);
    transition: all 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 18px 38px rgba(0,0,0,0.08);
}

.advantage-index {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-width: 72px;
    height: 28px;

    padding: 0 14px;

    border-radius: 999px;

    background: #dcefe4;
    color: #5d7268;

    font-size: 14px;
    font-weight: 700;

    margin-bottom: 14px;
}

.advantage-card h3 {
    font-size: 34px;
    line-height: 1.1;
    color: #009846;
    font-weight: 800;
    margin-bottom: 10px;
}

.advantage-card p {
    font-size: 14px;
    line-height: 1.6;
    color: #556370;
    font-weight: 600;
}

/* 移动端 */
@media (max-width: 768px) {

    .advantage-stats {
        padding: 20px 0 30px;
    }

    .advantage-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }

    .advantage-card {
        padding: 16px;
        border-radius: 14px;
    }

    .advantage-index {
        min-width: 58px;
        height: 24px;
        font-size: 12px;
        margin-bottom: 10px;
    }

    .advantage-card h3 {
        font-size: 24px;
    }

    .advantage-card p {
        font-size: 12px;
        line-height: 1.5;
    }
}
/*应用案例*/
.app-slider {
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
    border-radius: 12px 12px 0 0;
    background: #f5f5f5;
}

.app-slider-track {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.35s ease;
}

.app-slider-track .app-img {
    flex: 0 0 100%;
    width: 100%;
    height: 320px;
    object-fit: cover;
    object-position: center;
}

.app-slide-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    border: none;
    border-radius: 50%;
    background: rgba(255,255,255,0.88);
    color: #111;
    font-size: 24px;
    line-height: 34px;
    cursor: pointer;
    z-index: 3;
}

.app-prev {
    left: 12px;
}

.app-next {
    right: 12px;
}

.app-slide-dots {
    position: absolute;
    left: 50%;
    bottom: 14px;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    z-index: 3;
}

.app-slide-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.55);
}

.app-slide-dots span.active {
    width: 20px;
    border-radius: 999px;
    background: #fff;
}

.single-image .app-slide-btn,
.single-image .app-slide-dots {
    display: none;
}
.feature-card {
    flex: 1;
    min-width: 180px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
    padding: 16px 18px;
    border-radius: 999px;
    backdrop-filter: blur(6px);
    text-align: center;
}

.feature-card h4 {
    font-size: 15px;
    margin-bottom: 0;
    color: #fff;
    font-weight: 600;
}

.feature-card p {
    display: none;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-text {
    order: 2;
}

.hero-image {
    order: 1;
}

.hero-img {
    max-width: 100%;
    border-radius: 14px;
    box-shadow: 0 18px 45px rgba(0,0,0,0.35);
}

.hero-img {
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

/* 通用区块样式 */
section {
    padding: 38px 0;
}

.section-subtitle {
    color: #2E7D32;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

h2 {
    font-size: 32px;
    margin-bottom: 18px;
    color: #212121;
}

.section-desc {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
    max-width: 800px;
}

/* Lensun Product */
.lensun-product {
    background: #fff;
    padding: 80px 0;
}

.lensun-product .section-subtitle {
    text-align: center;
}

.lensun-product h2 {
    text-align: center;
    margin-bottom: 40px;
}

.lensun-product-image {
    width: 100%;
    border-radius: 22px;
    overflow: hidden;
    box-shadow: 0 18px 45px rgba(0,0,0,0.08);
}

.lensun-product-image img {
    width: 100%;
    height: 620px;
    object-fit: cover;
    display: block;
}
/*带来的好处*/
.benefits {
    background: #f2f2f2;
    padding: 48px 0;
}

.benefits h2 {
    margin-bottom: 55px;
}

.benefit-group {
    margin-bottom: 56px;
}

.benefit-group h3 {
    font-size: 30px;
    font-weight: 600;
    color: #111;
    margin-bottom: 30px;
    text-align: center;
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 34px;
}

.benefit-item {
    background: #fff;
    border-radius: 26px;
    padding: 42px 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: all 0.35s ease;
}

.benefit-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 42px rgba(0,0,0,0.08);
}

.benefit-icon {
    width: 82px;
    height: 82px;
    margin: 0 auto 26px;
    border: 2px solid #F5B301;
    border-radius: 50%;
    position: relative;
}

/* 默认线条 */
.benefit-icon::before,
.benefit-icon::after {
    content: '';
    position: absolute;
    background: #F5B301;
}
/* Operating savings */
.icon-cost::before {
    width: 34px;
    height: 34px;
    border: 2px solid #F5B301;
    border-radius: 50%;
    background: transparent;
    left: 22px;
    top: 22px;
}

.icon-cost::after {
    width: 16px;
    height: 16px;
    border-left: 2px solid #F5B301;
    border-bottom: 2px solid #F5B301;
    transform: rotate(-45deg);
    left: 33px;
    top: 30px;
    background: transparent;
}

/* Uptime and reliability */
.icon-maintenance::before {
    width: 38px;
    height: 22px;
    border: 2px solid #F5B301;
    border-radius: 4px;
    background: transparent;
    left: 18px;
    top: 30px;
}

.icon-maintenance::after {
    width: 10px;
    height: 10px;
    border-right: 2px solid #F5B301;
    border-bottom: 2px solid #F5B301;
    transform: rotate(45deg);
    left: 34px;
    top: 34px;
    background: transparent;
}

/* Fleet Readiness Design */
.icon-battery::before {
    width: 42px;
    height: 24px;
    border: 2px solid #F5B301;
    border-radius: 14px;
    background: transparent;
    left: 18px;
    top: 28px;
}

.icon-battery::after {
    width: 20px;
    height: 2px;
    left: 29px;
    top: 40px;
    box-shadow:
        0 -8px 0 #F5B301,
        0 8px 0 #F5B301;
}

.benefit-item h4 {
    color: #111;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 14px;
    text-align: center;
}

.benefit-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    text-align: center;
}

/* 应用案例 */
.app-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.app-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.app-card:hover {
    transform: translateY(-5px);
}

.app-img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    object-position: center;
}

.app-card h3 {
    font-size: 18px;
    padding: 15px 20px 5px;
}

.app-card p {
    font-size: 14px;
    color: #666;
    padding: 0 20px 15px;
}
/* 应用案例痛点列表 */
.pain-list {
    list-style: none;
    padding: 0 20px 24px;
}

.pain-list li {
    position: relative;
    padding-left: 18px;
    margin-bottom: 12px;
    font-size: 14px;
    color: #555;
    line-height: 1.7;
}

.pain-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #111;
}
/* 产品展示 */
.product-showcase {
    background: #fff;
    padding: 80px 0;
}

.product-showcase h2 {
    margin-bottom: 40px;
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.showcase-card {
    background: #fff;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 8px 28px rgba(0,0,0,0.06);
}

.showcase-img {
    width: 100%;
    height: 520px;
    object-fit: contain;
    background: #fff;
    display: block;
}

.showcase-content {
    display: none;
}
/* 数据实力 */

.stats-section {
    background: #f5f5f5;
    padding: 24px 0 10px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.stat-card {
    background: #fff;
    border-radius: 18px;
    padding: 22px 22px 20px;
    border: 1px solid #ececec;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0,0,0,0.06);
}

.stat-top {
    font-size: 13px;
    color: #999;
    margin-bottom: 18px;
    font-weight: 600;
}

.stat-card h3 {
    font-size: 44px;
    line-height: 1;
    color: #14853B;
    margin-bottom: 14px;
    font-weight: 700;
    letter-spacing: -1px;
}

.stat-card p {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
}

.advantage-heading {
    text-align: center;
    margin-bottom: 46px;
}

.advantage-heading h2 {
    font-size: 52px;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 0;
    color: #111;
}




/* 优质材料 */
.materials {
    background: #f9f9f9;
}

.material-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 38px;
    align-items: stretch;
}

.material-card {
    background: #fff;
    padding: 20px;
    border-radius: 18px;
    box-shadow: 0 8px 28px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    overflow: hidden;
}

.material-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(0,0,0,0.08);
}

.material-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #212121;
}

.material-card ul {
    list-style: none;
    margin-bottom: 20px;
}

.material-card ul li {
    margin-bottom: 8px;
    font-size: 14px;
    color: #666;
}

.material-img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    border-radius: 14px;
    margin-top: 18px;
}

/* 安装简便 */
.installation-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.install-list {
    list-style: none;
    margin-top: 20px;
}

.install-list li {
    margin-bottom: 12px;
    color: #333;
    background: #f0f0f0;
    padding: 10px 15px;
    border-radius: 20px;
}

.install-video {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* 联系我们 */
.contact {
    background: #f9f9f9;
}

.contact h2 {
    text-align: center;
}

.contact-desc {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
}

.contact-form {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2E7D32;
}

.btn-submit {
    width: 100%;
    background: #2E7D32;
    color: #fff;
    padding: 15px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-submit:hover {
    background: #1B5E20;
}

/* 页脚 */
.footer {
    background: #212121;
    color: #fff;
    text-align: center;
    padding: 20px 0;
}
/* 移动端横向滑动提示箭头 */
.scroll-hint {
    display: none;
}
/* 响应式设计 */
@media (max-width: 768px) {
    .hero-content,
    .installation-content,
    .form-row {
        grid-template-columns: 1fr;
    }

    .app-grid {
        grid-template-columns: 1fr;
    }
    .nav-menu {
        display: none;
    }
	.navbar {
	    padding: 12px 0;
	}
	
	.navbar .container {
	    display: flex;
	    justify-content: space-between;
	    align-items: center;
	}
.material-grid {
    grid-template-columns: 1fr;
    gap: 20px;
}

.material-card {
    max-width: 100%;
}


	
	.logo img {
	    height: 34px;
	}
	.section-logo {
	    display: flex;
	    justify-content: center;
	    margin-bottom: 22px;
	}
	
	.section-logo img {
	    width: 60px;
	    height: auto;
	    opacity: 0.8;
	    display: block;
	}
	.btn-contact {
	    background: #2E7D32;
	    color: #fff !important;
	    padding: 10px 22px;
	    border-radius: 5px;
	    margin-left: 10px;
	}
    .hero h1 {
        font-size: 28px;
    }

    h2 {
        font-size: 24px;
    }
	.hero {
	    padding: 56px 0;
	    min-height: auto;
	}
	
	.hero-content {
	    grid-template-columns: 1fr;
	}
	
	.hero-features {
	    flex-direction: column;
	}
	
	.feature-card {
	    width: 100%;
	    border-radius: 12px;
	}
	.hero-content {
	    grid-template-columns: 1fr;
	}
	
	.hero-image {
	    order: 1;
	    margin-bottom: 25px;
	}
	
	.hero-text {
	    order: 2;
	}
	/* Benefit 移动端横向滑动 */
	
	.benefit-group {
	    margin-bottom: 48px;
	}
	
	.benefit-group h3 {
	    font-size: 24px;
	    margin-bottom: 18px;
	}


    .benefit-item {
        max-width: 100%;
    }
	.series {
	    padding: 60px 0;
	}
	
	.series-block {
	    margin-bottom: 60px;
	}
	
	.series-text h3 {
	    font-size: 28px;
	}
	/* 数据优势模块 */
	.advantage-stats {
	    background: #fff;
	    padding: 28px 0 34px;
	    border-bottom: 1px solid #e5eee8;
	}
	
	.advantage-grid {
	    display: grid;
	    grid-template-columns: repeat(4, 1fr);
	    gap: 22px;
	}
	
	.advantage-card {
	    background: linear-gradient(180deg, #ffffff 0%, #f8fbf9 100%);
	    border: 1px solid #dfe9e2;
	    border-radius: 18px;
	    padding: 18px 20px 20px;
	    box-shadow: 0 12px 30px rgba(0,0,0,0.04);
	}
	
	.advantage-index {
	    height: 26px;
	    line-height: 26px;
	    background: #dcefe4;
	    color: #58756a;
	    border-radius: 999px;
	    padding: 0 14px;
	    font-size: 14px;
	    font-weight: 700;
	    margin-bottom: 10px;
	}
	
	.advantage-card h3 {
	    font-size: 28px;
	    line-height: 1.1;
	    color: #009846;
	    margin-bottom: 8px;
	    font-weight: 800;
	}
	
	.advantage-card p {
	    font-size: 14px;
	    color: #4d6370;
	    font-weight: 600;
	    line-height: 1.5;
	}
	
	/* 移动端 */
	@media (max-width: 768px) {
	    .advantage-grid {
	        grid-template-columns: 1fr 1fr;
	        gap: 14px;
	    }
	
	    .advantage-card {
	        padding: 14px;
	        border-radius: 14px;
	    }
	
	    .advantage-card h3 {
	        font-size: 22px;
	    }
	
	    .advantage-card p {
	        font-size: 12px;
	    }
	}
	/* Series 图片移动端横滑 */
	.series-grid {
	    display: flex;
	    overflow-x: auto;
	    gap: 16px;
	    scroll-snap-type: x mandatory;
	    -webkit-overflow-scrolling: touch;
	    padding-bottom: 12px;
	}
	
	.series-grid::-webkit-scrollbar {
	    display: none;
	}
	
	.series-grid img {
	    flex: 0 0 82%;
	    width: 82%;
	    height: 260px;
	    object-fit: cover;
	    border-radius: 18px;
	    scroll-snap-align: start;
	}
	.scroll-hint {
        display: flex;
        justify-content: center;
        gap: 18px;
        margin-top: 12px;
        color: #111;
        font-size: 26px;
        font-weight: 300;
        letter-spacing: 4px;
        opacity: 0.55;
    }
	.product-showcase {
	    padding: 48px 0;
	}
	
	.showcase-grid {
	    grid-template-columns: repeat(2, 1fr);
	    gap: 12px;
	}
	
	.showcase-img {
	    height: 220px;
	    object-fit: contain;
	}
	.btn-contact {
	        position: fixed;
	        top: 14px;
	        right: 14px;
	
	        z-index: 9999;
	
	        padding: 10px 16px;
	
	        font-size: 13px;
	        font-weight: 600;
	
	        border-radius: 8px;
	
	        box-shadow: 0 8px 24px rgba(0,0,0,0.18);
	    }
 .mobile-top-inquiry {
        display: inline-block;
        position: fixed;
        top: 14px;
        right: 14px;
        z-index: 9999;
        background: #2E7D32;
        color: #fff;
        padding: 10px 16px;
        border-radius: 8px;
        text-decoration: none;
        font-size: 13px;
        font-weight: 600;
        box-shadow: 0 8px 24px rgba(0,0,0,0.18);
    }
	.benefit-grid {
	    grid-template-columns: 1fr;
	    gap: 20px;
	}
	
	.benefit-item {
	    max-width: 100%;
	}
	.stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; } 
	.stat-card { padding: 18px 16px; } .stat-card h3 { font-size: 30px; } 
	.stat-card p { font-size: 12px; line-height: 1.5; }
	 .container {
	        padding: 0 20px;
	    }
		.advantage-heading {
		        margin-bottom: 28px;
		    }
		
		    .advantage-heading h2 {
		        font-size: 34px;
		        line-height: 1.2;
		    }
			.lensun-product {
        padding: 55px 0;
    }

    .lensun-product h2 {
        font-size: 26px;
        margin-bottom: 24px;
    }

    .lensun-product-image {
        border-radius: 16px;
    }

    .lensun-product-image img {
        height: 260px;
    }
}