:root {
    --primary-deep: #1e3a8a;
    --primary-blue: #2563eb;
    --light-blue: #60a5fa;
    --bg-light: #eff6ff;
    --text-dark: #333;
    --text-light: #fff;
    --border-radius: 8px;
}

body {
    margin: 0;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    background-color: #f9f9f9;
}

/* 导航栏 */
header {
    background-color: #fff;
    color: #1e3a8a;
    padding: 15px 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.logo {
    font-size: 1.05rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 6px;
}

    .logo span {
        color: var(--light-blue);
    }

nav ul {
    list-style: none;
    display: flex;
    gap: 12px;
    margin: 0;
    padding: 0;
}

    nav ul li a {
        margin-left:-5px;
        font-size: 0.92rem;
        color: #333;
        text-decoration: none;
        transition: 0.3s;
        padding-left: 0px;
        padding-right: 10px;
        border-right: 1px solid #ccc;
    }

        nav ul li a:hover {
            color: var(--light-blue);
        }

.menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 23px;
}

/* 自动滑屏轮播区域 */
.carousel-container {
    position: relative;
    width: 100%;
    height: 80vh; /* 桌面端高度 */
    overflow: hidden;
    background: var(--primary-deep);
}

.slides-wrapper {
    display: flex;
    height: 100%;
    transition: transform 0.8s ease-in-out;
}

/* 广告幻灯片 */
.slide {
    min-width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

/* 模拟广告的蓝色波浪背景 */
.slide-1 {
    /*background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #60a5fa 100%);*/
    background-image: url("/img/vip0755/slider/s1.jpg");
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.slide-2 {
   /* background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #3b82f6 100%);*/
    background-image: url("/img/vip0755/slider/s2.jpg");
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.slide-3 {
    background: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 50%, #93c5fd 100%);
    background-image: url("/img/vip0755/slider/s3.jpg");
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.slide-4 {
    background: linear-gradient(135deg, #172554 0%, #1e40af 50%, #2563eb 100%);
    background-image: url("/img/vip0755/slider/s4.jpg");
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

/* 幻灯片文字 */
.slide h1 {
    font-size: 48px;
    margin-bottom: 20px;
    letter-spacing: 2px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.slide p {
    font-size: 20px;
    opacity: 0.9;
    max-width: 800px;
    padding: 0 20px;
}

.slide .cta {
    margin-top: 20px;
    padding: 10px 25px;
    background: white;
    color: var(--primary-deep);
    text-decoration: none;
    font-weight: bold;
    border-radius: 30px;
    transition: 0.3s;
}

    .slide .cta:hover {
        background: var(--light-blue);
        color: white;
    }

/* 箭头 */
.arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    font-size: 30px;
    padding: 10px 15px;
    cursor: pointer;
    z-index: 10;
    border-radius: 50%;
    transition: 0.3s;
}

    .arrow:hover {
        background: rgba(255,255,255,0.5);
    }

.prev {
    left: 20px;
}

.next {
    right: 20px;
}

/* 底部圆点指示器 */
.dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    background: rgba(255,255,255,0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: 0.3s;
}

    .dot.active {
        background: white;
        transform: scale(1.2);
    }

/* 板块通用样式 */
.section {
    padding: 50px 6%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 32px;
    color: var(--primary-deep);
    margin-bottom: 40px;
    position: relative;
}

    .section-title::after {
        content: '';
        display: block;
        width: 60px;
        height: 4px;
        background: var(--primary-blue);
        margin: 10px auto 0;
        border-radius: 2px;
    }

/* 服务卡片 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 38px;
}

.service-card {
    background: white;
    padding: 15px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
    border-top: 4px solid var(--primary-blue);
}

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

    .service-card h3 {
        color: var(--primary-deep);
        margin-top: 0;
    }

/* 其他版块 */
.flex-container {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.news-item {
    flex: 1;
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
}

.expert-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.expert {
    text-align: center;
    background: var(--bg-light);
    padding: 20px;
    border-radius: var(--border-radius);
}

    .expert .avatar {
        width: 80px;
        height: 80px;
        background: var(--light-blue);
        border-radius: 50%;
        margin: 0 auto 15px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 30px;
    }

/* 页脚 */
footer {
    background-color: var(--primary-deep);
    color: #ccc;
    padding: 10px 10%;
    text-align: center;
    font-size:0.9rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 5px;
    flex-wrap: wrap;
}

    .footer-links a {
        color: #ccc;
        text-decoration: none;
    }

.copyright {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 10px;
    font-size: 0.85rem;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .slide-1 {
        background-image: url("/img/vip0755/slider/m1.jpg");
        background-repeat: no-repeat;
        background-size: 100% 100%;
    }
    .slide-2 {
        background-image: url("/img/vip0755/slider/m2.jpg");
        background-repeat: no-repeat;
        background-size: 100% 100%;
    }
    .slide-3 {
        background-image: url("/img/vip0755/slider/m3.jpg");
        background-repeat: no-repeat;
        background-size: 100% 100%;
    }
    .slide-4 {
        background-image: url("/img/vip0755/slider/m4.jpg");
        background-repeat: no-repeat;
        background-size: 100% 100%;
    }
    nav ul {
        display: none;
        flex-direction: column;
        width: 100%;
        background-color: var(--primary-deep);
        position: absolute;
        top: 80px;
        left: 0;
        padding: 20px;
    }

        nav ul.show {
            display: flex;
        }

        nav ul li a {
            color: #fff;
            padding-left: 50px;
            border-right: none;
        }

    .menu-toggle {
        display: block;
    }

    .carousel-container {
        height: 80vh;
    }
    /* 手机端轮播高度加大 */
    .slide h1 {
        font-size: 30px;
    }

    .slide p {
        font-size: 16px;
    }

    .arrow {
        font-size: 20px;
        padding: 5px 10px;
    }

    .prev {
        left: 10px;
    }

    .next {
        right: 10px;
    }

    .section {
        padding: 40px 5%;
    }
}



/* ===== 关于我们 ===== */
.about {
    padding: 80px 0;
    background: white;
}

    .about .container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
    }

.about-image {
    background: linear-gradient(145deg, #26529b, #202084);
    border-radius: 20px;
    padding: 48px 36px;
    color: white;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    position: relative;
    overflow: hidden;
}

    .about-image::after {
        content: '“';
        position: absolute;
        right: 20px;
        bottom: -30px;
        font-size: 14rem;
        opacity: 0.06;
        font-weight: 900;
        line-height: 1;
        color: white;
    }

    .about-image .big-number {
        font-size: 3.6rem;
        font-weight: 900;
        background: linear-gradient(135deg, #fffe3c, #ff3b3b);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        line-height: 1;
        margin-bottom: 8px;
    }

    .about-image h3 {
        font-size: 1.6rem;
        font-weight: 700;
        margin-bottom: 10px;
        position: relative;
        z-index: 2;
    }

    .about-image p {
        opacity: 0.8;
        font-size: 1rem;
        max-width: 340px;
        position: relative;
        z-index: 2;
    }

    .about-image .badge {
        display: inline-block;
        margin-top: 18px;
        background: rgba(240, 180, 41, 0.2);
        border: 1px solid rgba(240, 180, 41, 0.3);
        padding: 6px 22px;
        border-radius: 50px;
        font-size: 0.8rem;
        font-weight: 500;
        align-self: flex-start;
        position: relative;
        z-index: 2;
        color: #fff;
    }


.img-glow-alpha {
    width: 300px;
    /* 多层drop-shadow叠加实现柔和白发光，透明镂空处不发光 */
    filter: drop-shadow(0 0 6px #fff) drop-shadow(0 0 12px rgba(255,255,255,0.8)) drop-shadow(0 0 24px rgba(255,255,255,0.5));
    transition: filter 0.3s ease;
}

    .img-glow-alpha:hover {
        filter: drop-shadow(0 0 8px #fff) drop-shadow(0 0 18px rgba(255,255,255,0.9)) drop-shadow(0 0 36px rgba(255,255,255,0.6));
    }