/* Basic Reset & Global Styles */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --dark-color: #343a40;
    --light-color: #f8f9fa;
    --text-color: #212529;
    --white: #ffffff;
    --border-color: #dee2e6;
    --font-family-sans-serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    --font-size-base: 1rem;
}

body {
    font-family: var(--font-family-sans-serif);
    line-height: 1.6;
    color: var(--text-color);
    margin: 0;
    padding: 0;
    background-color: var(--light-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* Header Styles */
.main-header {
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: relative;
    z-index: 1000;
}

.header-top-bar {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 10px 0;
    font-size: 0.85rem;
}

.header-top-bar .top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.header-top-bar .contact-info span {
    margin-right: 20px;
}
.header-top-bar .contact-info span i {
    margin-right: 5px;
    color: var(--primary-color);
}

.header-top-bar .social-links a {
    color: var(--light-color);
    margin-left: 15px;
    transition: color 0.3s ease;
}
.header-top-bar .social-links a:hover {
    color: var(--primary-color);
}

.header-main-nav {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.header-main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand .logo {
    display: block;
}
.navbar-brand .logo img {
    max-height: 40px;
    width: auto;
}

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

.main-navigation .nav-menu > li {
    position: relative;
    margin-left: 30px;
}

.main-navigation .nav-menu > li > a {
    display: block;
    padding: 10px 0;
    color: var(--dark-color);
    font-weight: 600;
    transition: color 0.3s ease;
}
.main-navigation .nav-menu > li > a:hover,
.main-navigation .nav-menu > li.current-menu-item > a {
    color: var(--primary-color);
    text-decoration: none;
}

.main-navigation .sub-menu {
    list-style: none;
    margin: 0;
    padding: 10px 0;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--white);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    border-radius: 5px;
}

.main-navigation .menu-item-has-children:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-navigation .sub-menu li a {
    display: block;
    padding: 8px 20px;
    color: var(--text-color);
    white-space: nowrap;
    transition: background-color 0.3s ease, color 0.3s ease;
}
.main-navigation .sub-menu li a:hover {
    background-color: var(--light-color);
    color: var(--primary-color);
    text-decoration: none;
}

.menu-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-color);
}

.header-actions {
    display: flex;
    align-items: center;
}

.search-box {
    position: relative;
    margin-right: 20px;
}

.search-toggle {
    background: none;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    color: var(--dark-color);
    transition: color 0.3s ease;
}
.search-toggle:hover {
    color: var(--primary-color);
}

.search-form-container {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--white);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 15px;
    border-radius: 5px;
    display: none; /* Hidden by default */
    z-index: 1001;
    min-width: 250px;
}
.search-box.active .search-form-container {
    display: block;
}

.search-form {
    display: flex;
}
.search-form input[type="search"] {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 4px;
    flex-grow: 1;
    margin-right: 5px;
}
.search-form button {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.search-form button:hover {
    background-color: #0056b3;
}

.btn {
    display: inline-block;
    font-weight: 400;
    color: var(--white);
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    background-color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 8px 20px;
    font-size: var(--font-size-base);
    line-height: 1.5;
    border-radius: 4px;
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}


/* Footer Styles */
.main-footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 60px 0 20px;
    font-size: 0.9rem;
}

.footer-widgets {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-widget {
    flex: 1;
    min-width: 250px;
    margin-bottom: 30px;
    padding-right: 30px; /* Spacing between widgets */
}
.footer-widget:last-child {
    padding-right: 0;
}

.footer-logo img {
    max-height: 32px;
    margin-bottom: 15px;
}

.footer-widget h3 {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
}
.footer-widget h3::after {
    content: '';
    display: block;
    width: 50px;
    height: 2px;
    background-color: var(--primary-color);
    margin-top: 10px;
}

.footer-widget p {
    margin-bottom: 15px;
}

.footer-widget ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
.footer-widget ul li {
    margin-bottom: 10px;
}
.footer-widget ul li a {
    color: var(--light-color);
    transition: color 0.3s ease;
}
.footer-widget ul li a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.footer-widget .social-links a {
    color: var(--light-color);
    margin-right: 15px;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}
.footer-widget .social-links a:hover {
    color: var(--primary-color);
}

.footer-widget address p {
    display: flex;
    align-items: flex-start;
    margin-bottom: 10px;
}
.footer-widget address p i {
    margin-right: 10px;
    color: var(--primary-color);
    font-size: 1rem;
    margin-top: 3px;
}
.footer-widget address p a {
    color: var(--light-color);
}
.footer-widget address p a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    font-size: 0.85rem;
}

.footer-bottom .copyright {
    margin-bottom: 10px;
}
.footer-bottom .copyright a {
    color: var(--primary-color);
}

.footer-bottom .legal-links a {
    color: var(--light-color);
    margin-left: 20px;
    transition: color 0.3s ease;
}
.footer-bottom .legal-links a:hover {
    color: var(--primary-color);
}

/* Responsive adjustments */
@media (max-width: 991px) {
    .main-navigation .nav-menu {
        display: none; /* Hide desktop menu */
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 100%;
        left: 0;
        background-color: var(--white);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        padding: 10px 0;
        border-top: 1px solid var(--border-color);
    }
    .main-navigation .nav-menu.active {
        display: flex;
    }
    .main-navigation .nav-menu > li {
        margin: 0;
        border-bottom: 1px solid var(--border-color);
    }
    .main-navigation .nav-menu > li:last-child {
        border-bottom: none;
    }
    .main-navigation .nav-menu > li > a {
        padding: 12px 20px;
        color: var(--dark-color);
    }
    .main-navigation .sub-menu {
        position: static;
        box-shadow: none;
        background-color: var(--light-color);
        border-radius: 0;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        padding-left: 20px;
        border-top: 1px solid var(--border-color);
    }
    .main-navigation .sub-menu li a {
        padding-left: 30px;
    }
    .menu-toggle {
        display: block; /* Show hamburger menu */
        order: 1; /* Position before other items */
    }
    .header-main-nav .container {
        flex-wrap: wrap;
    }
    .navbar-brand {
        order: 0;
    }
    .header-actions {
        order: 2;
        margin-left: auto; /* Push actions to the right */
    }
    .footer-widgets {
        flex-direction: column;
    }
    .footer-widget {
        min-width: auto;
        padding-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 20px;
        margin-bottom: 20px;
    }
    .footer-widget:last-child {
        border-bottom: none;
        padding-bottom: 0;
        margin-bottom: 0;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .footer-bottom .legal-links {
        margin-top: 10px;
    }
    .footer-bottom .legal-links a {
        margin: 0 10px;
    }
}
/* 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;
  }
}