/* 主导航 */
.navbar {
    /* background: #1a237e; */
    height: 64px;
    display: flex;
    align-items: center;
    position: fixed;
    width: 100%;
    box-sizing: border-box;
    border-width: 0px 0px 1px 0px;
    border-style: solid;
    border-color: rgba(221, 221, 221, 0.3);
    z-index: 999;
    transition: all 0.3s ease-in-out;
}


/* 导航栏容器 */
.nav-container {
    position: relative;
    /* max-width: 1440px; */
    /* margin: 0 auto; */
    padding: 0 40px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-container .phone {
    color: #fff;
}

.nav-container .phone-card {
    display: flex;
    align-items: center;
    gap: 10px;
}

.phone-icon {
    background-image: url("../assets/header/phone.png");
    width: 37px;
    height: 31px;
    background-size: 100% 100%;
}

.logo {
    color: white;
    font-size: 20px;
    text-decoration: none;
    margin-right: 40px;
    background-image: url("../assets/header/logo.png");
    width: 135px;
    height: 28px;
    background-size: 100% 100%;
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    /* gap: 40px; */
    list-style: none;
    flex: 1;
    margin-left: 100px;
}

.nav-item {
    position: static;
    /* 关键定位 */
    padding: 20px;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

.nav-link:hover {
    color: white;
}

.navbar.scrolled {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    color: black;
}

.navbar.scrolled .logo {
    background-image: url("../assets/header/logo_black.png");
}

.navbar.scrolled .phone-icon {
    background-image: url("../assets/header/phone_black.png");
}

.navbar.scrolled .nav-link,
.navbar.scrolled .logo,
.navbar.scrolled .phone {
    color: black;
}

.navbar.scrolled .nav-link:hover {
    color: #1966FF;
}

/* 全屏悬浮菜单 */
.top-megamenu {
    display: none;
    position: fixed;
    left: 0;
    top: 64px;
    width: 100vw;
    background: white;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    padding: 32px 0;
    z-index: 999;
    opacity: 0;
    /* transform: translateY(-10px);
    transition: all 2s ease-in-out; */
}

.nav-item:hover .top-megamenu {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* 菜单内容容器 */
.menu-content {
    max-width: 1360px;
    margin: 0 auto;
    padding: 0 40px;
}

.solution-menu-content {
    display: flex;
}

/* 产品服务布局 */
.product-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.product-server-card {
    display: flex;
    gap: 20px;
    padding: 10px;
    cursor: pointer;
}

.product-server-card:hover {
    background: #F5F8FF;
    border-radius: 14px;
}

.top-product-icon {
    width: 80px;
    height: 80px;
}

.top-product-desc {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
}

.product-card {
    width: 200px;
    margin-bottom: 12px;
}

li {
    list-style: none;
    line-height: 34px;
}