/* 全局样式 */
:root {
    --primary-color: #2ecc71;
    --secondary-color: #27ae60;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --text-color: #333;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    height: 50px;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li a {
    color: var(--dark-color);
    text-decoration: none;
    padding: 10px 20px;
    transition: var(--transition);
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--primary-color);
}

.mobile-menu {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* 视频展示区样式 */
.hero {
    height: 100vh;
    position: relative;
    overflow: hidden;
}

.video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
}

.overlay h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.overlay p {
    font-size: 1.5rem;
}

/* 轮播图样式 */
.slider {
    padding: 80px 0 40px 0;
    /* background: var(--light-color); */
}

.swiper {
    width: 100%;
    height: 600px;
}

.swiper-slide {
    position: relative;
}

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

.slide-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: white;
}

/* 核心优势样式 */
.advantages {
    padding: 20px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: var(--dark-color);
}

.core-image {
    position: relative;
    width: 100%;
    height: 400px;
    margin-bottom: 40px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.core-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.core-image:hover img {
    transform: scale(1.05);
}

.core-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.7));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
    padding: 20px;
}

.core-overlay h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.core-overlay p {
    font-size: 1.2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.advantage-card {
    padding: 30px;
    background: var(--light-color);
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.advantage-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.advantage-card h3 {
    margin-bottom: 15px;
    color: var(--dark-color);
}

/* 页脚样式 */
footer {
    background: var(--dark-color);
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3 {
    margin-bottom: 20px;
}

.social-links a {
    color: white;
    font-size: 24px;
    margin-right: 15px;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu {
        display: block;
    }

    .overlay h1 {
        font-size: 2.5rem;
    }

    .overlay p {
        font-size: 1.2rem;
    }

    .swiper {
        height: 300px;
    }
}


.img-core {
    width: 100%;
}

.swiper-button-prev, .swiper-button-next {
    color: #ffffff !important;
    /* background-color: rgba(209, 209, 209, 0.2); */

}

.swiper-pagination-bullet-active {
    background: #fff !important;
}

.swiper-pagination-bullet {
    background: #fff !important;
}