/* Basic Reset & Typography */
body {
    margin: 0;
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

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

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

a:hover {
    text-decoration: underline;
}

/* Header Styles */
.main-header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1000;
}

.header-top-bar {
    background-color: #f8f8f8;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

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

.top-nav ul, .footer-legal-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
}

.top-nav li, .footer-legal-nav li {
    margin-right: 20px;
}

.top-nav a, .footer-legal-nav a {
    color: #666;
    font-size: 0.9em;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn {
    display: inline-block;
    padding: 8px 15px;
    border-radius: 4px;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-login {
    background-color: #e9ecef;
    color: #333;
    border: 1px solid #ced4da;
}

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

.btn-login:hover { background-color: #d6d8db; }
.btn-register:hover { background-color: #0056b3; }

.language-selector select {
    border: 1px solid #ced4da;
    padding: 7px 10px;
    border-radius: 4px;
    background-color: #fff;
    cursor: pointer;
}

.header-main-nav {
    padding: 15px 0;
}

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

.logo img {
    height: 50px;
    width: auto;
    display: block;
}

.primary-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 25px;
}

.primary-nav .nav-item {
    position: relative;
}

.primary-nav .nav-item a {
    color: #333;
    font-weight: bold;
    padding: 10px 0;
    display: block;
}

.primary-nav .nav-item a:hover, .primary-nav .nav-item.active a {
    color: #007bff;
    text-decoration: none;
}

.dropdown-menu, .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
    list-style: none;
    padding: 10px 0;
    margin: 0;
    min-width: 200px;
    display: none;
    z-index: 100;
    border-radius: 4px;
}

.nav-item.has-dropdown:hover > .dropdown-menu,
.dropdown-submenu:hover > .submenu {
    display: block;
}

.dropdown-menu li, .submenu li {
    padding: 0;
}

.dropdown-menu a, .submenu a {
    padding: 8px 20px;
    color: #555;
    white-space: nowrap;
    font-weight: normal;
}

.dropdown-menu a:hover, .submenu a:hover {
    background-color: #f5f5f5;
    color: #007bff;
}

.dropdown-submenu {
    position: relative;
}

.dropdown-submenu .submenu {
    left: 100%;
    top: 0;
}

.menu-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
}

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

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

.header-search input[type="search"] {
    border: 1px solid #ced4da;
    padding: 8px 12px;
    border-radius: 20px;
    outline: none;
    width: 200px;
    transition: width 0.3s ease;
}

.header-search input[type="search"]:focus {
    width: 250px;
    border-color: #007bff;
}

.header-search button {
    background: none;
    border: none;
    cursor: pointer;
    margin-left: -35px; /* Overlay on input */
    color: #666;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-search button:hover {
    color: #007bff;
}

/* Footer Styles */
.main-footer {
    background-color: #212529;
    color: #bbb;
    padding: 40px 0;
    font-size: 0.9em;
}

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

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

.footer-widgets {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 30px;
    gap: 30px;
}

.footer-widget {
    flex: 1;
    min-width: 250px;
    margin-bottom: 20px;
}

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

.footer-widget h3::after {
    content: '';
    display: block;
    width: 50px;
    height: 2px;
    background-color: #007bff;
    margin-top: 10px;
}

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

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

.footer-widget ul li a {
    color: #bbb;
}

.footer-widget ul li a:hover {
    color: #fff;
}

.social-media a {
    display: inline-block;
    color: #fff;
    font-size: 1.5em;
    margin-right: 15px;
    transition: color 0.3s ease;
}

.social-media a:hover {
    color: #007bff;
}

.newsletter form {
    display: flex;
    margin-top: 15px;
}

.newsletter input[type="email"] {
    flex-grow: 1;
    padding: 10px 15px;
    border: 1px solid #444;
    border-radius: 4px 0 0 4px;
    background-color: #333;
    color: #fff;
    outline: none;
}

.newsletter input[type="email"]::placeholder {
    color: #888;
}

.btn-subscribe {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.footer-bottom p {
    margin: 0;
    color: #888;
}

.footer-legal-nav ul {
    gap: 20px;
}

.footer-legal-nav a {
    color: #888;
    font-size: 0.85em;
}

/* Responsive Adjustments */
@media (max-width: 992px) {
    .primary-nav ul {
        gap: 15px;
    }
    .header-search input[type="search"] {
        width: 150px;
    }
    .header-search input[type="search"]:focus {
        width: 200px;
    }
}

@media (max-width: 768px) {
    .header-top-bar .container, .header-main-nav .container {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .top-nav ul, .header-actions {
        width: 100%;
        justify-content: center;
    }

    .top-nav li {
        margin-right: 10px;
        margin-bottom: 5px;
    }

    .header-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .header-actions .btn, .language-selector select {
        width: 100%;
    }

    .primary-nav {
        width: 100%;
    }

    .menu-toggle {
        display: block;
        align-self: flex-end;
        position: absolute;
        top: 20px;
        right: 15px;
    }

    .nav-list {
        display: none; /* Hidden by default on mobile */
        flex-direction: column;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0,0,0,0.05);
        padding: 10px 0;
    }

    .nav-list.is-open {
        display: flex;
    }

    .primary-nav .nav-item {
        border-bottom: 1px solid #eee;
    }

    .primary-nav .nav-item:last-child {
        border-bottom: none;
    }

    .primary-nav .nav-item a {
        padding: 12px 15px;
    }

    .dropdown-menu, .submenu {
        position: static;
        box-shadow: none;
        background-color: #f8f8f8;
        padding-left: 20px;
        border-radius: 0;
        min-width: unset;
    }

    .dropdown-menu a, .submenu a {
        padding: 8px 15px;
    }

    .dropdown-submenu .submenu {
        left: 0;
        top: auto;
    }

    .header-search {
        width: 100%;
        justify-content: center;
    }
    .header-search input[type="search"] {
        width: 100%;
        max-width: 300px;
    }
    .header-search input[type="search"]:focus {
        width: 100%;
        max-width: 300px;
    }

    .footer-widgets {
        flex-direction: column;
        gap: 0;
    }

    .footer-widget {
        min-width: unset;
        width: 100%;
        margin-bottom: 30px;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
    }
    .footer-legal-nav ul {
        flex-direction: column;
        gap: 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;
  }
}