/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    overflow: hidden;
    height: 100%;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow: hidden;
    height: 100%;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul, li {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 100%;
    max-width: 1920px;
    margin: 0 auto;
    padding: 0 80px;
}

@media screen and (min-width: 1921px) {
    .container {
        max-width: 90%;
        padding: 0 100px;
    }
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.header.transparent {
    background-color: transparent;
    box-shadow: none;
}

.header.transparent .nav-item > a {
    color: #fff;
}

.header.transparent .logo img {
    filter: brightness(0) invert(1);
}

.header-container {
    max-width: 1920px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 80px;
    height: 80px;
}

@media screen and (min-width: 1921px) {
    .header-container {
        max-width: 90%;
        padding: 0 100px;
    }
}

.logo img {
    height: 50px;
    width: auto;
    transition: filter 0.3s ease;
}

.main-nav {
    display: flex;
}

.nav-list {
    display: flex;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-item > a {
    display: block;
    padding: 28px 25px;
    font-size: 16px;
    color: #333;
    transition: color 0.3s ease;
}

@media screen and (min-width: 1921px) {
    .nav-item > a {
        padding: 28px 35px;
        font-size: 18px;
    }
}

.nav-item > a:hover,
.nav-item.active > a {
    color: #1e88e5;
}

.header.transparent .nav-item > a:hover,
.header.transparent .nav-item.active > a {
    color: #90caf9;
}

.nav-item.has-dropdown:hover .dropdown {
    display: block;
}

.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    background-color: #fff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    overflow: hidden;
    z-index: 100;
}

.dropdown li a {
    display: block;
    padding: 12px 20px;
    font-size: 14px;
    color: #666;
    transition: all 0.3s ease;
}

.dropdown li a:hover {
    background-color: #1e88e5;
    color: #fff;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #333;
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* 右侧水滴导航 */
.section-nav {
    position: fixed;
    right: 40px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
}

.section-nav ul {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.nav-dot {
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.dot-icon {
    width: 12px;
    height: 12px;
    background-color: rgba(255, 255, 255, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    transition: all 0.3s ease;
    position: relative;
}

.nav-dot.active .dot-icon,
.nav-dot:hover .dot-icon {
    background-color: #3d8db8;
    border-color: #3d8db8;
    transform: scale(1.3);
}

.dot-label {
    position: absolute;
    right: 30px;
    white-space: nowrap;
    background-color: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 13px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    transform: translateX(10px);
}

.nav-dot:hover .dot-label {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* 深色背景时的圆形导航 */
.section-nav.dark .dot-icon {
    background-color: rgba(0, 0, 0, 0.2);
    border-color: rgba(0, 0, 0, 0.4);
}

.section-nav.dark .nav-dot.active .dot-icon,
.section-nav.dark .nav-dot:hover .dot-icon {
    background-color: #3d8db8;
    border-color: #3d8db8;
}

/* 全屏滚动容器 */
.fullpage-wrapper {
    width: 100%;
    position: relative;
    transition: transform 0.8s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.fullpage-section {
    width: 100%;
    height: 100vh;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.section-inner {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    padding-bottom: 50px;
}

/* 第一屏：全屏视频 */
.section-video {
    background-color: #000;
    padding: 0;
}

.video-fullscreen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.video-fullscreen video {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    object-fit: cover;
}

.video-fallback {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 2;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

/* 视频播放/暂停按钮 */
.video-play-btn {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 70px;
    background-color: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(5px);
}

.video-play-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateX(-50%) scale(1.1);
}

.video-play-btn .play-icon {
    display: none;
    margin-left: 4px;
}

.video-play-btn .pause-icon {
    display: block;
}

.video-play-btn.paused .play-icon {
    display: block;
}

.video-play-btn.paused .pause-icon {
    display: none;
}

/* 静音/取消静音按钮 */
.video-mute-btn {
    position: absolute;
    bottom: 100px;
    right: 80px;
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(5px);
}

.video-mute-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
}

.video-mute-btn .mute-icon {
    display: block;
}

.video-mute-btn .unmute-icon {
    display: none;
}

.video-mute-btn.unmuted .mute-icon {
    display: none;
}

.video-mute-btn.unmuted .unmute-icon {
    display: block;
}

@media screen and (max-width: 768px) {
    .video-play-btn {
        width: 60px;
        height: 60px;
        bottom: 80px;
    }
    
    .video-play-btn svg {
        width: 24px;
        height: 24px;
    }
    
    .video-mute-btn {
        width: 40px;
        height: 40px;
        bottom: 85px;
        right: 30px;
    }
    
    .video-mute-btn svg {
        width: 18px;
        height: 18px;
    }
}

/* 第二屏：关于我们 */
.section-about {
    background-color: #4a9fc9;
    padding: 0;
    display: flex;
}

.about-wrapper {
    display: flex;
    width: 100%;
    flex: 1;
}

.about-left {
    width: 50%;
    overflow: hidden;
    background-color: #333;
}

.about-left img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.about-right {
    width: 50%;
    background: linear-gradient(135deg, #5ba3cb 0%, #3d8db8 50%, #2d7aa8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 60px;
    box-sizing: border-box;
    overflow-y: auto;
}

.about-right-inner {
    max-width: 700px;
    width: 100%;
}

.about-header {
    margin-bottom: 40px;
}

.about-title {
    font-size: 56px;
    color: #fff;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 5px;
}

.about-subtitle {
    font-size: 28px;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 4px;
    display: block;
    margin-bottom: 25px;
}

.about-company {
    display: flex;
    align-items: center;
    gap: 20px;
}

.about-company span {
    font-size: 26px;
    color: #fff;
    font-weight: 500;
    letter-spacing: 2px;
}

.milk-icon {
    width: 80px;
    height: auto;
    object-fit: contain;
}

.about-desc p {
    font-size: 17px;
    line-height: 2;
    color: rgba(255, 255, 255, 0.9);
    text-align: justify;
    margin-bottom: 40px;
}

.btn-detail {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    padding: 16px 40px;
    background-color: #fff;
    color: #333;
    font-size: 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.btn-detail svg {
    transition: transform 0.3s ease;
}

.btn-detail:hover {
    background-color: #f5f5f5;
    transform: translateX(5px);
}

.btn-detail:hover svg {
    transform: translateX(5px);
}

@media screen and (min-width: 1921px) {
    .about-title {
        font-size: 68px;
    }
    
    .about-subtitle {
        font-size: 34px;
    }
    
    .about-company span {
        font-size: 32px;
    }
    
    .milk-icon {
        width: 100px;
    }
    
    .about-desc p {
        font-size: 20px;
    }
    
    .btn-detail {
        padding: 20px 50px;
        font-size: 18px;
    }
}

/* 通用Section头部 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header.light .section-title,
.section-header.light .section-subtitle {
    color: #fff;
}

.section-title {
    font-size: 48px;
    color: #333;
    margin-bottom: 10px;
    font-weight: 700;
}

.section-subtitle {
    font-size: 24px;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.section-desc {
    margin-top: 15px;
    font-size: 18px;
    color: #666;
}

@media screen and (min-width: 1921px) {
    .section-header {
        margin-bottom: 80px;
    }
    
    .section-title {
        font-size: 58px;
    }
    
    .section-subtitle {
        font-size: 28px;
    }
    
    .section-desc {
        font-size: 20px;
    }
}

/* 第三屏：品牌产品 */
.section-products {
    background-color: #5ba3cb;
    position: relative;
}

.products-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.products-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.products-content {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 100px 80px 80px;
    box-sizing: border-box;
}

.products-header {
    text-align: center;
    margin-bottom: 40px;
}

.products-title {
    font-size: 60px;
    color: #fff;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.2);
    letter-spacing: 5px;
}

.products-subtitle {
    font-size: 24px;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 8px;
    display: block;
    margin-bottom: 15px;
}

.products-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 2px;
}

/* 产品分类标签 */
.products-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 50px;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 50px;
    padding: 6px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.tab-btn {
    padding: 14px 50px;
    font-size: 16px;
    color: #666;
    background-color: transparent;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.tab-btn:hover {
    color: #333;
}

.tab-btn.active {
    background-color: #3d8db8;
    color: #fff;
}

/* 产品列表滑动容器 */
.products-slider {
    width: 100%;
    max-width: 1400px;
    position: relative;
    overflow: hidden;
}

.products-list {
    display: none;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    width: 100%;
    animation: fadeIn 0.5s ease;
}

.products-list.active {
    display: grid;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.product-item {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.product-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.product-img-wrap {
    height: 260px;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f8f9fa;
}

.product-img-wrap img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.product-name {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
}

.product-name span {
    font-size: 16px;
    color: #333;
    font-weight: 500;
}

.product-name svg {
    color: #999;
    transition: transform 0.3s ease;
}

.product-item:hover .product-name svg {
    transform: translateX(5px);
    color: #1e88e5;
}

.product-detail {
    padding: 12px 20px 18px;
    font-size: 13px;
    color: #999;
    line-height: 1.5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media screen and (min-width: 1921px) {
    .products-content {
        padding: 120px 100px 100px;
    }
    
    .products-title {
        font-size: 72px;
    }
    
    .products-subtitle {
        font-size: 28px;
    }
    
    .products-desc {
        font-size: 22px;
    }
    
    .tab-btn {
        padding: 16px 60px;
        font-size: 18px;
    }
    
    .products-list {
        max-width: 1600px;
        gap: 40px;
    }
    
    .product-img-wrap {
        height: 320px;
    }
    
    .product-name span {
        font-size: 18px;
    }
    
    .product-detail {
        font-size: 14px;
    }
}

/* 第四屏：新闻动态 */
.section-news {
    background-color: #5ba3cb;
    position: relative;
}

.news-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.news-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content-wrap {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 100px 80px 80px;
    box-sizing: border-box;
}

.news-header {
    text-align: center;
    margin-bottom: 60px;
}

.news-title {
    font-size: 60px;
    color: #fff;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.2);
    letter-spacing: 5px;
}

.news-subtitle {
    font-size: 24px;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 8px;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    width: 100%;
    max-width: 1400px;
}

.news-card {
    background-color: transparent;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.4s ease;
    display: block;
}

.news-card:hover {
    transform: translateY(-10px);
}

.news-image {
    height: 280px;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-info {
    padding: 20px 5px;
}

.news-info h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 8px;
    font-weight: 500;
    line-height: 1.5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.news-date {
    font-size: 14px;
    color: #666;
}

@media screen and (min-width: 1921px) {
    .news-content-wrap {
        padding: 120px 100px 100px;
    }
    
    .news-title {
        font-size: 72px;
    }
    
    .news-subtitle {
        font-size: 28px;
    }
    
    .news-grid {
        max-width: 1600px;
        gap: 60px;
    }
    
    .news-image {
        height: 340px;
    }
    
    .news-info h3 {
        font-size: 22px;
    }
    
    .news-date {
        font-size: 16px;
    }
}

/* 第五屏：焦点图轮播 */
.section-banner {
    background-color: #f5f5f5;
    padding: 0;
}

.banner-slider {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.banner-slides {
    width: 100%;
    height: 100%;
    position: relative;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.banner-slide.active {
    opacity: 1;
    z-index: 1;
}

.banner-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 轮播文字 */
.banner-text {
    position: absolute;
    top: 50%;
    left: 10%;
    transform: translateY(-70%);
    z-index: 5;
}

.banner-logo {
    margin-bottom: 20px;
}

.banner-logo svg {
    width: 60px;
    height: 60px;
}

.banner-text h2 {
    font-size: 72px;
    color: #1e5799;
    font-weight: 900;
    letter-spacing: 5px;
    text-shadow: 3px 3px 0 #fff, -1px -1px 0 #fff, 1px -1px 0 #fff, -1px 1px 0 #fff;
    -webkit-text-stroke: 2px #1e5799;
}

/* 右下角徽章 */
.banner-badge {
    position: absolute;
    bottom: 120px;
    right: 10%;
    text-align: center;
    z-index: 5;
}

.badge-cow {
    width: 80px;
    height: 80px;
    background-color: #f5e6d3;
    border-radius: 50%;
    margin: 0 auto 10px;
    position: relative;
}

.badge-cow::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 30px;
    background-color: #333;
    border-radius: 50%;
}

.badge-text {
    display: block;
    background-color: #e53935;
    color: #fff;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 5px;
}

.badge-sub {
    font-size: 14px;
    color: #666;
}

/* 左右箭头 */
.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.3);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    transition: all 0.3s ease;
    z-index: 10;
}

.banner-arrow:hover {
    background-color: rgba(255, 255, 255, 0.8);
    color: #333;
}

.banner-prev {
    left: 30px;
}

.banner-next {
    right: 30px;
}

/* 底部蓝色波浪 */
.banner-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 150px;
    z-index: 3;
}

.banner-wave svg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.wave-drips {
    position: absolute;
    top: -20px;
    left: 0;
    width: 50%;
    height: 80px;
}

.drip {
    position: absolute;
    bottom: 0;
    width: 8px;
    background-color: #fff;
    border-radius: 0 0 4px 4px;
    animation: drip 2s ease-in-out infinite;
}

.drip::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 8px;
    background-color: #fff;
    border-radius: 50%;
}

@keyframes drip {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

@media screen and (min-width: 1921px) {
    .banner-text h2 {
        font-size: 90px;
    }
    
    .banner-logo svg {
        width: 80px;
        height: 80px;
    }
    
    .badge-cow {
        width: 100px;
        height: 100px;
    }
    
    .badge-text {
        font-size: 22px;
        padding: 10px 25px;
    }
    
    .banner-arrow {
        width: 60px;
        height: 60px;
    }
}

@media screen and (max-width: 768px) {
    .banner-text {
        left: 5%;
        transform: translateY(-60%);
    }
    
    .banner-text h2 {
        font-size: 36px;
        letter-spacing: 2px;
    }
    
    .banner-logo svg {
        width: 40px;
        height: 40px;
    }
    
    .banner-badge {
        bottom: 100px;
        right: 5%;
    }
    
    .badge-cow {
        width: 50px;
        height: 50px;
    }
    
    .badge-text {
        font-size: 14px;
        padding: 6px 15px;
    }
    
    .banner-arrow {
        width: 40px;
        height: 40px;
    }
    
    .banner-prev {
        left: 15px;
    }
    
    .banner-next {
        right: 15px;
    }
    
    .banner-wave {
        height: 100px;
    }
}

/* 底部固定版权栏 */
.fixed-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: rgba(30, 136, 229, 0.95);
    z-index: 998;
    padding: 12px 0;
    backdrop-filter: blur(10px);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    max-width: 1920px;
    margin: 0 auto;
    padding: 0 80px;
}

.footer-content span {
    font-size: 14px;
    color: #fff;
}

@media screen and (min-width: 1921px) {
    .footer-content {
        gap: 100px;
    }
    
    .footer-content span {
        font-size: 15px;
    }
}

/* 响应式设计 */
@media screen and (max-width: 1200px) {
    .about-wrapper {
        flex-direction: column;
    }
    
    .about-left {
        width: 100%;
        flex: 0 0 40%;
    }
    
    .about-right {
        width: 100%;
        flex: 0 0 60%;
        padding: 40px 30px;
    }
    
    .about-title {
        font-size: 36px;
    }
    
    .about-subtitle {
        font-size: 20px;
    }
    
    .about-company span {
        font-size: 20px;
    }
    
    .milk-icon {
        width: 60px;
    }
    
    .about-desc p {
        font-size: 15px;
    }
    
    .products-slider {
        max-width: 100%;
    }
    
    .products-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-content-wrap {
        padding: 80px 40px 60px;
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .contact-content {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-info {
        width: 100%;
    }
    
    .contact-qrcode {
        justify-content: center;
    }
}

/* 平板端导航 */
@media screen and (max-width: 992px) {
    .header-container {
        padding: 0 20px;
    }
    
    .main-nav {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
    }
    
    .nav-item > a {
        padding: 15px 20px;
        border-bottom: 1px solid #eee;
    }
    
    .nav-item.has-dropdown:hover .dropdown {
        display: none;
    }
    
    .dropdown {
        position: static;
        box-shadow: none;
        background-color: #f9f9f9;
        display: none;
    }
    
    .dropdown.active {
        display: block;
    }
    
    .dropdown li a {
        padding-left: 40px;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .header.transparent .mobile-menu-btn span {
        background-color: #fff;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

/* 手机端导航 */
@media screen and (max-width: 768px) {
    .header-container {
        height: 60px;
        padding: 0 15px;
    }
    
    .logo img {
        height: 35px;
    }
    
    .main-nav {
        top: 60px;
    }
    
    .nav-item > a {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    .dropdown li a {
        padding: 10px 15px 10px 30px;
        font-size: 13px;
    }
    
    .section-nav {
        right: 15px;
    }
    
    .dot-icon {
        width: 12px;
        height: 16px;
    }
    
    .video-content h1 {
        font-size: 32px;
    }
    
    .video-content p {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    .container {
        padding: 0 20px;
    }
    
    /* 关于我们移动端 */
    .about-left {
        flex: 0 0 35%;
    }
    
    .about-right {
        flex: 0 0 65%;
        padding: 30px 20px;
    }
    
    .about-title {
        font-size: 28px;
        letter-spacing: 2px;
    }
    
    .about-subtitle {
        font-size: 16px;
        margin-bottom: 15px;
    }
    
    .about-company {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .about-company span {
        font-size: 16px;
    }
    
    .milk-icon {
        width: 50px;
    }
    
    .about-header {
        margin-bottom: 20px;
    }
    
    .about-desc p {
        font-size: 14px;
        line-height: 1.8;
        margin-bottom: 25px;
    }
    
    .btn-detail {
        padding: 12px 30px;
        font-size: 14px;
    }
    
    .products-content {
        padding: 80px 20px 60px;
    }
    
    .products-title {
        font-size: 36px;
    }
    
    .products-subtitle {
        font-size: 16px;
    }
    
    .products-desc {
        font-size: 14px;
    }
    
    .products-tabs {
        flex-wrap: wrap;
        justify-content: center;
        gap: 5px;
    }
    
    .tab-btn {
        padding: 10px 25px;
        font-size: 14px;
    }
    
    .products-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .product-img-wrap {
        height: 180px;
        padding: 15px;
    }
    
    .product-name {
        padding: 12px 15px;
    }
    
    .product-name span {
        font-size: 14px;
    }
    
    .product-detail {
        padding: 10px 15px 15px;
        font-size: 12px;
    }
    
    .news-content-wrap {
        padding: 80px 20px 60px;
    }
    
    .news-title {
        font-size: 36px;
    }
    
    .news-subtitle {
        font-size: 16px;
    }
    
    .news-header {
        margin-bottom: 30px;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .news-image {
        height: 200px;
    }
    
    .news-info h3 {
        font-size: 16px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
        padding: 0 20px;
    }
    
    .footer-content span {
        font-size: 12px;
    }
}

/* 手机端全屏滚动优化 */
@media screen and (max-width: 768px) {
    /* 隐藏右侧水滴导航 */
    .section-nav {
        display: none;
    }
    
    /* 视频区域 */
    .video-play-btn {
        bottom: 80px;
        left: 20px;
        width: 50px;
        height: 50px;
    }
    
    .video-mute-btn {
        bottom: 80px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
    
    /* 关于我们 - 改为上下布局 */
    .about-wrapper {
        flex-direction: column;
    }
    
    .about-left {
        flex: none;
        width: 100%;
        height: 35vh;
    }
    
    .about-right {
        flex: 1;
        width: 100%;
        padding: 25px 20px;
    }
    
    .about-right-inner {
        padding-right: 0;
    }
    
    .about-title {
        font-size: 24px;
        letter-spacing: 2px;
    }
    
    .about-subtitle {
        font-size: 14px;
        margin-bottom: 10px;
    }
    
    .about-company span {
        font-size: 14px;
    }
    
    .milk-icon {
        width: 40px;
    }
    
    .about-header {
        margin-bottom: 15px;
    }
    
    .about-desc p {
        font-size: 13px;
        line-height: 1.7;
        margin-bottom: 15px;
        -webkit-line-clamp: 5;
    }
    
    .btn-detail {
        padding: 10px 25px;
        font-size: 13px;
    }
    
    /* 产品区域 */
    .products-content {
        padding: 60px 15px 40px;
    }
    
    .products-header {
        margin-bottom: 20px;
    }
    
    .products-title {
        font-size: 24px;
    }
    
    .products-subtitle {
        font-size: 14px;
    }
    
    .products-desc {
        font-size: 12px;
        margin-top: 8px;
    }
    
    .products-tabs {
        margin-bottom: 20px;
    }
    
    .tab-btn {
        padding: 8px 18px;
        font-size: 13px;
    }
    
    .products-slider {
        max-height: calc(100vh - 280px);
        overflow-y: auto;
    }
    
    .products-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .product-img-wrap {
        height: 120px;
        padding: 10px;
    }
    
    .product-name {
        padding: 8px 10px;
    }
    
    .product-name span {
        font-size: 12px;
    }
    
    .product-name svg {
        width: 14px;
        height: 14px;
    }
    
    .product-detail {
        padding: 8px 10px 10px;
        font-size: 11px;
    }
    
    /* 新闻区域 */
    .news-content-wrap {
        padding: 60px 15px 40px;
    }
    
    .news-header {
        margin-bottom: 20px;
    }
    
    .news-title {
        font-size: 24px;
    }
    
    .news-subtitle {
        font-size: 14px;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        max-height: calc(100vh - 200px);
        overflow-y: auto;
    }
    
    .news-card {
        display: flex;
        flex-direction: row;
        background: #fff;
        border-radius: 8px;
        overflow: hidden;
    }
    
    .news-image {
        width: 120px;
        height: 90px;
        flex-shrink: 0;
    }
    
    .news-info {
        flex: 1;
        padding: 10px;
    }
    
    .news-info h3 {
        font-size: 14px;
        margin-bottom: 5px;
        -webkit-line-clamp: 2;
    }
    
    .news-info p {
        display: none;
    }
    
    .news-date {
        font-size: 11px;
    }
    
    /* 品牌推广区域 */
    .contact-content {
        padding: 60px 15px 40px;
    }
    
    .contact-title {
        font-size: 24px;
    }
    
    .contact-info {
        gap: 8px;
    }
    
    .contact-info li {
        font-size: 13px;
    }
    
    .contact-qrcode {
        gap: 20px;
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .qrcode-item img {
        width: 80px;
        height: 80px;
    }
    
    .qrcode-item span {
        font-size: 12px;
    }
    
    /* 底部 */
    .section-footer {
        padding: 12px 0;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 8px;
        text-align: center;
        padding: 0 15px;
    }
    
    .footer-content span {
        font-size: 11px;
    }
}

@media screen and (max-width: 480px) {
    .section-header {
        margin-bottom: 30px;
    }
    
    .about-left {
        height: 30vh;
    }
    
    .about-title {
        font-size: 22px;
    }
    
    .about-desc p {
        font-size: 12px;
        -webkit-line-clamp: 4;
    }
    
    .products-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .product-img-wrap {
        height: 100px;
    }
    
    .product-name span {
        font-size: 11px;
    }
    
    .product-detail {
        display: none;
    }
    
    .news-image {
        width: 100px;
        height: 75px;
    }
    
    .news-info h3 {
        font-size: 13px;
    }
    
    .contact-qrcode {
        flex-direction: column;
        gap: 15px;
    }
}