/* General Body Styles */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
    background-color: #f8f8f8;
}

/* Header Styles */
.main-header {
    background-color: #ffffff;
    border-bottom: 1px solid #eee;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 15px 0;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #333;
    font-size: 24px;
    font-weight: bold;
}

.logo-img {
    height: 40px;
    margin-right: 10px;
}

.main-nav .nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.main-nav .nav-item {
    margin-left: 25px;
    position: relative;
}

.main-nav .nav-link {
    text-decoration: none;
    color: #555;
    font-weight: 500;
    padding: 10px 0;
    display: block;
    transition: color 0.3s ease;
}

.main-nav .nav-link:hover,
.main-nav .nav-link.active {
    color: #007bff;
}

.dropdown-menu {
    display: none;
    position: absolute;
    background-color: #fff;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    min-width: 160px;
    z-index: 1;
    list-style: none;
    padding: 10px 0;
    margin-top: 5px;
    border-radius: 4px;
}

.nav-item.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu .dropdown-item {
    color: #333;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    transition: background-color 0.3s ease;
}

.dropdown-menu .dropdown-item:hover {
    background-color: #f1f1f1;
    color: #007bff;
}

.menu-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

.icon-bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 5px 0;
    transition: all 0.3s ease;
}

.header-actions .btn {
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    margin-left: 10px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.btn-primary {
    background-color: #007bff;
    color: #fff;
    border: 1px solid #007bff;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.btn-secondary {
    background-color: #6c757d;
    color: #fff;
    border: 1px solid #6c757d;
}

.btn-secondary:hover {
    background-color: #5a6268;
    border-color: #545b62;
}

.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('/assets/images/hero-background.jpg') no-repeat center center/cover;
    color: #fff;
    text-align: center;
    padding: 100px 20px;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3.5em;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2em;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn-hero {
    background-color: #28a745;
    color: #fff;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    margin: 0 10px;
    transition: background-color 0.3s ease;
}

.btn-hero:hover {
    background-color: #218838;
}

.btn-hero-outline {
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    margin: 0 10px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.btn-hero-outline:hover {
    background-color: #fff;
    color: #333;
}


/* Footer Styles */
.main-footer {
    background-color: #222;
    color: #bbb;
    padding: 40px 20px 20px;
    font-size: 0.9em;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #444;
}

.footer-section {
    flex: 1;
    min-width: 250px;
}

.footer-section h3 {
    color: #fff;
    font-size: 1.2em;
    margin-bottom: 20px;
}

.footer-section p {
    margin-bottom: 10px;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: #bbb;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #007bff;
}

.footer-section a {
    color: #007bff;
    text-decoration: none;
}

.footer-section a:hover {
    text-decoration: underline;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-icons img {
    width: 30px;
    height: 30px;
    filter: invert(70%); /* Make icons visible on dark background */
    transition: filter 0.3s ease;
}

.social-icons a:hover img {
    filter: invert(100%) sepia(100%) saturate(2000%) hue-rotate(190deg) brightness(100%) contrast(100%); /* Blue tint on hover */
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    color: #888;
    font-size: 0.85em;
}

.footer-bottom p {
    margin: 5px 0;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .main-nav .nav-list {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 70px; /* Adjust based on header height */
        left: 0;
        background-color: #fff;
        box-shadow: 0 8px 16px rgba(0,0,0,0.1);
        padding: 10px 0;
    }

    .main-nav .nav-list.active {
        display: flex;
    }

    .main-nav .nav-item {
        margin: 0;
        border-bottom: 1px solid #eee;
    }

    .main-nav .nav-link {
        padding: 15px 20px;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        border-top: 1px solid #eee;
        margin-top: 0;
        padding-left: 20px;
        background-color: #f9f9f9;
    }

    .menu-toggle {
        display: block;
    }

    .header-actions {
        display: none; /* Hide actions on smaller screens for simplicity */
    }

    .hero-content h1 {
        font-size: 2.5em;
    }

    .hero-content p {
        font-size: 1em;
    }

    .footer-container {
        flex-direction: column;
        align-items: center;
    }

    .footer-section {
        text-align: center;
        margin-bottom: 20px;
    }

    .footer-section ul {
        display: inline-block; /* For better centering of list items */
        text-align: left;
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
        justify-content: center;
    }

    .logo {
        margin-bottom: 10px;
    }

    .main-nav {
        width: 100%;
        text-align: center;
    }

    .hero-section {
        padding: 80px 20px;
    }
}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}