/* Basic Resets & Typography */
:root {
    --primary-color: #4A90E2;
    --secondary-color: #50E3C2;
    --text-color: #333;
    --light-text-color: #666;
    --background-light: #f8f8f8;
    --border-color: #eee;
    --header-height: 80px;
    --mobile-header-height: 60px;
}

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

body {
    font-family: 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    margin-bottom: 0.5em;
    color: var(--text-color);
    line-height: 1.2;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease, background-color 0.3s ease;
}

a:hover {
    color: darken(var(--primary-color), 10%);
    text-decoration: underline;
}

ul {
    list-style: none;
}

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

/* Buttons */
.button {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.primary-button {
    background-color: var(--primary-color);
    color: #fff;
}

.primary-button:hover {
    background-color: darken(var(--primary-color), 10%);
    color: #fff;
    text-decoration: none;
}

.secondary-button {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.secondary-button:hover {
    background-color: var(--primary-color);
    color: #fff;
    text-decoration: none;
}

/* Header Styles */
.site-header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.header-top-bar {
    background-color: #333;
    color: #fff;
    font-size: 0.85em;
    padding: 8px 0;
}

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

.top-bar-content {
    display: flex;
    justify-content: space-between;
    width: 100%;
}

.contact-info span {
    margin-right: 20px;
    display: inline-flex;
    align-items: center;
}

.contact-info i {
    margin-right: 5px;
    color: var(--secondary-color);
}

.social-links a {
    color: #fff;
    margin-left: 15px;
    font-size: 1.1em;
}

.social-links a:hover {
    color: var(--secondary-color);
    text-decoration: none;
}

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

.navbar-brand .logo {
    display: flex;
    align-items: center;
    height: 40px;
}

.navbar-brand .logo svg {
    height: 100%;
    width: auto;
}

.main-navigation .nav-list {
    display: flex;
    align-items: center;
}

.main-navigation .nav-item {
    margin-left: 30px;
    position: relative;
}

.main-navigation .nav-link {
    display: block;
    padding: 10px 0;
    color: var(--text-color);
    font-weight: 500;
}

.main-navigation .nav-link:hover,
.main-navigation .nav-link.active {
    color: var(--primary-color);
    text-decoration: none;
}

.main-navigation .nav-item.has-dropdown:hover > .nav-link i {
    transform: rotate(180deg);
}

.main-navigation .nav-item.has-dropdown .dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    min-width: 200px;
    z-index: 10;
    border-radius: 5px;
    overflow: hidden;
}

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

.main-navigation .dropdown-menu li a {
    padding: 12px 20px;
    display: block;
    color: var(--text-color);
    white-space: nowrap;
}

.main-navigation .dropdown-menu li a:hover {
    background-color: var(--background-light);
    color: var(--primary-color);
    text-decoration: none;
}

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

.search-box {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    overflow: hidden;
    margin-right: 20px;
}

.search-box input {
    border: none;
    padding: 8px 12px;
    outline: none;
    font-size: 0.9em;
}

.search-box button {
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    padding: 8px 12px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.search-box button:hover {
    background-color: darken(var(--primary-color), 10%);
}

.user-menu {
    display: flex;
    align-items: center;
}

.user-menu .button {
    margin-left: 10px;
}

.menu-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    font-size: 1.8em;
    cursor: pointer;
    color: var(--text-color);
}

/* Mobile Menu */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    z-index: 1001;
    display: none; /* Hidden by default */
    justify-content: flex-end;
}

.mobile-menu-overlay.active {
    display: flex;
}

.mobile-navigation {
    width: 300px;
    background-color: #fff;
    padding: 20px;
    transform: translateX(100%);
    transition: transform 0.3s ease-out;
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    overflow-y: auto;
}

.mobile-menu-overlay.active .mobile-navigation {
    transform: translateX(0);
}

.mobile-nav-list li {
    margin-bottom: 15px;
}

.mobile-nav-list li a {
    display: block;
    padding: 10px 0;
    color: var(--text-color);
    font-size: 1.1em;
    font-weight: 500;
}

.mobile-nav-list li a:hover {
    color: var(--primary-color);
}

.mobile-nav-list .has-submenu > a {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-nav-list .submenu {
    padding-left: 20px;
    margin-top: 5px;
    display: none; /* Hidden by default */
}

.mobile-nav-list .submenu.active {
    display: block;
}

.mobile-nav-list .submenu li a {
    font-size: 1em;
    padding: 8px 0;
    color: var(--light-text-color);
}

/* Footer Styles */
.site-footer {
    background-color: #222;
    color: #fff;
    padding: 60px 0 30px;
    font-size: 0.9em;
}

.site-footer a {
    color: #fff;
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.footer-column h3 {
    color: var(--secondary-color);
    margin-bottom: 20px;
    font-size: 1.2em;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column.about-us p {
    margin-bottom: 20px;
    color: rgba(255,255,255,0.7);
}

.footer-logo {
    display: block;
    margin-bottom: 20px;
}

.footer-logo svg {
    height: 35px;
    width: auto;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.1);
    color: #fff;
    font-size: 1.1em;
    margin-right: 10px;
    transition: background-color 0.3s ease;
}

.social-icons a:hover {
    background-color: var(--primary-color);
    text-decoration: none;
}

.footer-column.contact-info address {
    font-style: normal;
    margin-bottom: 20px;
}

.footer-column.contact-info p {
    display: flex;
    align-items: flex-start;
    margin-bottom: 10px;
    color: rgba(255,255,255,0.7);
}

.footer-column.contact-info p i {
    margin-right: 10px;
    color: var(--secondary-color);
    font-size: 1.1em;
    margin-top: 3px;
}

.newsletter-signup h4 {
    color: #fff;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.newsletter-signup form {
    display: flex;
}

.newsletter-signup input {
    flex-grow: 1;
    padding: 10px 15px;
    border: none;
    border-radius: 5px 0 0 5px;
    outline: none;
    font-size: 0.9em;
}

.newsletter-signup button {
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    padding: 10px 15px;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.newsletter-signup button:hover {
    background-color: darken(var(--primary-color), 10%);
}

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

.copyright {
    color: rgba(255,255,255,0.6);
    margin-bottom: 10px;
}

.legal-links a {
    margin-left: 20px;
    color: rgba(255,255,255,0.7);
}

.legal-links a:hover {
    color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 992px) {
    .header-main-nav .container {
        height: var(--mobile-header-height);
    }

    .main-navigation, .header-actions .search-box, .header-actions .user-menu {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .header-top-bar .top-bar-content {
        flex-direction: column;
        align-items: center;
    }

    .contact-info, .social-links {
        margin-bottom: 5px;
    }

    .contact-info span {
        margin-right: 10px;
        margin-left: 10px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-top-bar {
        display: none; /* Hide top bar on smaller mobiles */
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-column {
        text-align: center;
    }

    .footer-column ul {
        padding: 0;
    }

    .footer-column ul li {
        display: inline-block;
        margin: 0 10px 10px;
    }

    .footer-column.about-us .social-icons {
        justify-content: center;
        display: flex;
    }

    .footer-column.contact-info p {
        justify-content: center;
    }

    .newsletter-signup form {
        max-width: 300px;
        margin: 0 auto;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .legal-links {
        margin-top: 15px;
    }

    .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;
  }
}