/* Basic Reset & Global Styles */
body {
    margin: 0;
    padding: 0;
    font-family: 'Arial', 'Helvetica Neue', Helvetica, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f8f8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: #007bff;
    text-decoration: none;
    transition: color 0.2s ease-in-out;
}

a:hover {
    text-decoration: underline;
    color: #0056b3;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
    white-space: nowrap;
}

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

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

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

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

.btn-subscribe {
    background-color: #28a745;
    color: white;
    border: 1px solid #28a745;
}

.btn-subscribe:hover {
    background-color: #218838;
    border-color: #1e7e34;
}

/* Header Styles */
.site-header {
    background-color: #fff;
    border-bottom: 1px solid #eee;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    position: relative;
    z-index: 100;
}

.header-top-bar {
    background-color: #f0f0f0;
    padding: 10px 0;
    font-size: 14px;
    color: #555;
}

.header-top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

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

.language-selector select {
    border: 1px solid #ccc;
    padding: 5px 8px;
    border-radius: 4px;
    background-color: #fff;
    cursor: pointer;
}

.header-main .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    flex-wrap: wrap;
}

.logo img {
    max-height: 50px;
    vertical-align: middle;
}

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

.main-navigation ul li {
    position: relative;
    margin-left: 25px;
}

.main-navigation ul li a {
    display: block;
    padding: 10px 0;
    color: #333;
    font-weight: bold;
    text-decoration: none;
}

.main-navigation ul li a:hover,
.main-navigation ul li a:focus {
    color: #007bff;
}

.main-navigation ul ul {
    display: none;
    position: absolute;
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    min-width: 220px;
    z-index: 100;
    top: 100%;
    left: 0;
    flex-direction: column;
    border-top: 3px solid #007bff;
    padding: 10px 0;
    border-radius: 0 0 5px 5px;
}

.main-navigation ul li:hover > ul,
.main-navigation ul li.focused > ul {
    display: flex;
}

.main-navigation ul ul li {
    margin: 0;
}

.main-navigation ul ul li a {
    padding: 10px 15px;
    white-space: nowrap;
    font-weight: normal;
    color: #555;
}

.main-navigation ul ul li a:hover,
.main-navigation ul ul li a:focus {
    background-color: #f5f5f5;
    color: #007bff;
}

.search-form {
    display: flex;
    align-items: center;
    border: 1px solid #ccc;
    border-radius: 20px;
    padding: 5px 10px;
    background-color: #f9f9f9;
}

.search-form input {
    border: none;
    outline: none;
    padding: 5px;
    width: 150px;
    background-color: transparent;
}

.search-form button {
    background: none;
    border: none;
    cursor: pointer;
    color: #555;
    padding: 5px;
    font-size: 16px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
    position: relative;
    width: 40px;
    height: 40px;
}

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

/* Header Promo Banner */
.header-promo-banner {
    background-color: #ffc107; /* Warning yellow */
    color: #333;
    padding: 12px 0;
    text-align: center;
    font-weight: bold;
    font-size: 15px;
}

.header-promo-banner .promo-link {
    color: #0056b3;
    margin-left: 10px;
    text-decoration: underline;
}

.header-promo-banner .promo-link:hover {
    color: #003d82;
}

.additional-header-info {
    background-color: #e9ecef;
    padding: 20px 0;
    font-size: 14px;
    color: #666;
    border-top: 1px solid #dee2e6;
}

/* Footer Styles */
.site-footer {
    background-color: #212529;
    color: #adb5bd;
    padding: 50px 0 25px;
    font-size: 14px;
    line-height: 1.8;
}

.footer-widgets .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.widget-title {
    color: #fff;
    font-size: 19px;
    margin-bottom: 25px;
    border-bottom: 2px solid #007bff;
    padding-bottom: 10px;
    font-weight: bold;
}

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

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

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

.footer-widgets ul li a {
    color: #adb5bd;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-widgets ul li a:hover {
    color: #fff;
    text-decoration: underline;
}

.social-links a {
    color: #adb5bd;
    font-size: 22px;
    margin-right: 18px;
    transition: color 0.3s ease, transform 0.3s ease;
}

.social-links a:hover {
    color: #fff;
    transform: translateY(-2px);
}

.widget-contact i {
    margin-right: 10px;
    color: #007bff;
}

.newsletter-form {
    display: flex;
    margin-top: 20px;
}

.newsletter-form input[type="email"] {
    flex-grow: 1;
    padding: 12px;
    border: 1px solid #495057;
    border-radius: 5px 0 0 5px;
    background-color: #343a40;
    color: #fff;
    font-size: 15px;
}

.newsletter-form button {
    border-radius: 0 5px 5px 0;
    white-space: nowrap;
    padding: 12px 20px;
    font-size: 15px;
}

.newsletter-disclaimer {
    font-size: 12px;
    color: #6c757d;
    margin-top: 10px;
}

.footer-bottom {
    border-top: 1px solid #343a40;
    padding-top: 25px;
    text-align: center;
}

.footer-bottom .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.copyright {
    margin: 0;
    color: #99a2a8;
}

.footer-legal-links {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 25px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-legal-links a {
    color: #adb5bd;
    text-decoration: none;
}

.footer-legal-links a:hover {
    color: #fff;
    text-decoration: underline;
}

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

/* Responsive Adjustments */
@media (max-width: 992px) {
    .main-navigation ul {
        margin-left: 0;
    }
    .main-navigation ul li {
        margin-left: 15px;
    }
}

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

    .header-actions {
        flex-direction: column;
        width: 100%;
        gap: 10px;
    }

    .header-actions .btn {
        width: 80%;
        max-width: 200px;
    }

    .language-selector {
        width: 80%;
        max-width: 200px;
    }

    .logo {
        margin-bottom: 15px;
    }

    .main-navigation {
        width: 100%;
    }

    .main-navigation ul {
        display: none; /* Hidden by default on mobile */
        flex-direction: column;
        width: 100%;
        background-color: #fff;
        position: absolute;
        top: 100%;
        left: 0;
        border-top: 1px solid #eee;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        padding-bottom: 10px;
    }

    .main-navigation ul.active { /* Class to show mobile menu */
        display: flex;
    }

    .main-navigation ul li {
        margin: 0;
        border-bottom: 1px solid #eee;
        width: 100%;
        text-align: left;
    }

    .main-navigation ul li a {
        padding: 15px 20px;
    }

    .main-navigation ul ul {
        position: static;
        box-shadow: none;
        border-top: none;
        background-color: #f9f9f9;
        width: 100%;
        padding: 0;
        border-radius: 0;
    }

    .main-navigation ul ul li a {
        padding-left: 40px;
        font-size: 14px;
    }

    .menu-toggle {
        display: block; /* Show menu toggle on mobile */
        align-self: flex-end;
        margin-top: -50px; /* Adjust based on logo height */
    }

    .header-main .logo {
        align-self: flex-start;
    }

    .menu-toggle[aria-expanded="true"] .icon-bar:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle[aria-expanded="true"] .icon-bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .menu-toggle[aria-expanded="true"] .icon-bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .search-form {
        width: calc(100% - 30px);
        margin: 10px auto;
    }

    .footer-widgets .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-widgets .widget-title {
        text-align: center;
    }

    .social-links {
        margin-top: 20px;
    }

    .newsletter-form {
        flex-direction: column;
        align-items: center;
    }

    .newsletter-form input[type="email"] {
        border-radius: 5px;
        margin-bottom: 10px;
        width: 80%;
        max-width: 300px;
    }

    .newsletter-form button {
        border-radius: 5px;
        width: 80%;
        max-width: 300px;
    }

    .footer-bottom .container {
        flex-direction: column;
    }

    .footer-legal-links {
        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;
  }
}