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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, 'Microsoft YaHei', 'PingFang SC', 'Segoe UI Emoji', 'Noto Color Emoji', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    position: relative;
    z-index: 0;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 32px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 10px;
}

.section-title p {
    color: #666;
    font-size: 16px;
}

.section-title h2 a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
}

.section-title h2 a:hover {
    opacity: 0.8;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #1e3a5f;
    color: #fff;
}

.btn-primary:hover {
    background-color: #0f2439;
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
    border: 2px solid #d4af37;
}

.btn-secondary {
    background-color: transparent;
    color: #1e3a5f;
    border: 2px solid #1e3a5f;
}

.btn-secondary:hover {
    background-color: #1e3a5f;
    color: #fff;
    box-shadow: 0 0 15px rgba(30, 58, 95, 0.3);
}

.clearfix::after {
    content: '';
    display: table;
    clear: both;
}

.page-banner {
    position: relative;
    width: 100%;
    max-width: 2560px;
    height: 400px;
    margin: 0 auto;
    overflow: hidden;
	transition: height 0.5s ease, opacity 0.4s ease;
}

.page-banner.banner-hidden {
    height: 0 !important;
    opacity: 0;
    margin: 0;
}

.page-banner img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.page-banner .banner-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    text-shadow: 2px 2px 20px rgba(0, 0, 0, 0.6);
    background: linear-gradient(135deg, rgba(30, 58, 95, 0.6) 0%, rgba(30, 58, 95, 0.3) 100%);
    /*padding: 40px 60px;*/
    padding: 20px 30px;
    border-radius: 12px;
    /*backdrop-filter: blur(5px);*/
}

.page-banner .banner-overlay h1 {
    /*font-size: 52px;*/
    font-size: 38px;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.page-banner .banner-overlay p {
    font-size: 20px;
    opacity: 0.95;
    font-weight: 300;
    letter-spacing: 1px;
}

@media (max-width: 768px) {
    .section-title h2 {
        font-size: 24px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 13px;
    }
    
    .page-banner {
        height: 280px;
    }
    
    .page-banner img {
        height: 280px;
    }
    
    .page-banner .banner-overlay {
        /*padding: 25px 30px;*/
        padding: 10px 15px;
    }
    
    .page-banner .banner-overlay h1 {
        font-size: 24px;
    }
    
    .page-banner .banner-overlay p {
        font-size: 16px;
    }
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: #1e3a5f;
    color: #d4af37;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(30, 58, 95, 0.4);
    z-index: 999;
}

.back-to-top:hover {
    background-color: #0f2439;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
    color: #e8c870;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}