/* 基础重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    width: 100%;
    min-width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.5;
    font-size: 14px;
    color: #333;
    background: #fff;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
    border: none;
}

/* 移动端基础样式 */
@media screen and (max-width: 768px) {
    .container {
        width: 100%;
        min-width: 100%;
        padding: 0 15px;
        margin: 0 auto;
        overflow: hidden;
    }

    /* Banner区域 */
    .banner {
        width: 100%;
        min-width: 100%;
        height: auto !important;
        min-height: 280px;
        margin-top: 48px;
        position: relative;
    }

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

    .banner-center {
        position: absolute;
        left: 15px;
        right: 15px;
        top: 50%;
        transform: translateY(-50%);
        z-index: 2;
    }

    .banner-center h1 {
        font-size: 20px;
        line-height: 1.4;
        margin-bottom: 10px;
        color: #fff;
    }

    .banner-center p {
        font-size: 14px;
        line-height: 1.6;
        color: rgba(255,255,255,0.8);
    }

    /* 关于我们 */
    .about {
        width: 100%;
        min-width: 100%;
        padding: 30px 0;
    }

    .about-container {
        width: 100%;
        display: flex;
        flex-direction: column;
        gap: 20px;
    }

    .about-text {
        width: 100%;
    }

    .about-text h2 {
        font-size: 20px;
        margin-bottom: 15px;
    }

    .about-text p {
        font-size: 14px;
        line-height: 1.8;
        margin-bottom: 20px;
        height: 148px;
    }

    .about-img {
        width: 100%;
    }

    .about-img img {
        width: 100%;
        display: block;
    }

    /* 数据统计 */
    .about-stats {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 20px 15px;
    }

    .about-stats .number-item {
        width: 100%;
        text-align: center;
    }

    .about-stats .number {
        font-size: 28px;
        color: #2161c8;
        margin-bottom: 8px;
    }

    .about-stats span {
        font-size: 14px;
        color: #666;
    }

    /* 底部区域 */
    .footer {
        width: 100%;
        min-width: 100%;
        background: #001B4B;
    }

    .footer-main {
        width: 100%;
        padding: 30px 0;
    }

    .footer-nav-section {
        width: 100%;
    }

    .footer-nav {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .footer-nav-title {
        font-size: 16px;
        color: #fff;
        margin-bottom: 15px;
        padding-bottom: 10px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .footer-nav-links a {
        font-size: 14px;
        color: rgba(255,255,255,0.6);
        text-decoration: none;
        padding: 8px 0;
        display: block;
    }

    /* 联系信息 */
    .contact-info {
        width: 100%;
        display: flex;
        flex-direction: column;
        gap: 20px;
        padding: 20px 15px;
    }

    .contact-item {
        width: 100%;
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .contact-icon {
        width: 40px;
        height: 40px;
    }

    .contact-label {
        font-size: 12px;
        color: rgba(255,255,255,0.6);
    }

    .contact-values span {
        font-size: 14px;
        color: #fff;
        line-height: 1.4;
    }

    /* 移动端导航样式 */
    .navbar {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        background: #001B4B;
        z-index: 1000;
        padding: 10px 0;
    }

    .nav-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 15px;
        position: relative;
    }

    /* 汉堡菜单按钮 */
    .menu-toggle {
        width: 28px;
        height: 28px;
        position: relative;
        cursor: pointer;
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 6px;
        z-index: 1001;
    }

    .menu-toggle span {
        display: block;
        width: 100%;
        height: 2px;
        background: #fff;
        transition: all 0.3s ease;
    }

    /* 汉堡菜单动画效果 */
    .menu-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Logo样式 */
    .logo-container {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .logo-img {
        height: 28px;
        width: auto;
    }

    .logo-text {
        font-size: 14px;
        color: #fff;
    }

    /* 导航菜单 */
    .navbar ul {
        display: none;
        position: fixed;
        top: 48px;
        left: 0;
        width: 100%;
        background: #001B4B;
        padding: 0;
        margin: 0;
        flex-direction: column;
        z-index: 1000;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    }

    .navbar ul.active {
        display: flex;
    }

    .navbar ul li {
        width: 100%;
        border-top: 1px solid rgba(255,255,255,0.1);
    }

    .navbar ul li a {
        display: block;
        padding: 15px;
        color: #fff;
        font-size: 14px;
        text-decoration: none;
        transition: background 0.3s;
    }

    .navbar ul li a:hover {
        background: rgba(255,255,255,0.1);
    }

    .navbar ul li.active a {
        color: #2db7f5;
    }

    /* 下拉菜单 */
    .navbar .dropdown {
        position: static;
        width: 100%;
        background: rgba(0,0,0,0.2);
        display: none;
        padding: 0;
        transform: none;
    }

    .navbar li:hover .dropdown {
        display: none;
    }

    .navbar li.active .dropdown {
        display: block;
    }

    .navbar .dropdown a {
        padding: 12px 25px;
        font-size: 13px;
        border-bottom: none;
    }

    /* 移除原有的下划线效果 */
    .navbar ul li.active::after,
    .navbar ul li:hover::after {
        display: none;
    }

    /* 添加展开箭头 */
    .navbar ul li.has-dropdown > a::after {
        content: '';
        display: inline-block;
        width: 6px;
        height: 6px;
        border-right: 2px solid #fff;
        border-bottom: 2px solid #fff;
        margin-left: 8px;
        transform: rotate(45deg);
        transition: transform 0.3s;
        position: absolute;
        right: 15px;
        top: 50%;
        margin-top: -3px;
    }

    .navbar ul li.has-dropdown.active > a::after {
        transform: rotate(-135deg);
    }
}

/* 小屏幕手机适配 */
@media screen and (max-width: 375px) {
    .container {
        padding: 0 12px;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .footer-nav {
        grid-template-columns: 1fr;
    }
}

/* 平板适配 */
@media screen and (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 0 20px;
    }

    .product-side-cards {
        grid-template-columns: 1fr;
    }

    .cooperation-list {
        grid-template-columns: repeat(3, 1fr);
    }

    .news-list {
        grid-template-columns: 1fr;
    }
}

/* 添加动画效果 */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media screen and (max-width: 768px) {
    .navbar ul.active {
        animation: slideDown 0.3s ease forwards;
    }
}