/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: #007cba;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #005a87;
}

/* Header Styles */
.site-header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    flex-wrap: wrap;
}

.site-branding {
    flex: 1;
    min-width: 200px;
}

.site-title {
    font-size: 1.5rem;
    margin-bottom: 0;
}

.site-title a {
    color: #333;
}

.site-description {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.25rem;
}

/* Language Switcher */
.language-switcher {
    margin: 0 1rem;
}

.language-switcher ul {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
}

.language-switcher li {
    margin: 0;
}

.language-switcher a {
    display: block;
    padding: 0.5rem 1rem;
    background-color: #f5f5f5;
    border-radius: 4px;
    font-size: 0.9rem;
}

.language-switcher li.active a {
    background-color: #007cba;
    color: white;
}

/* Navigation */
.main-navigation {
    flex: 2;
    text-align: center;
}

.nav-menu {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle-icon {
    display: block;
    width: 25px;
    height: 2px;
    background-color: #333;
    position: relative;
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 2px;
    background-color: #333;
    left: 0;
    transition: transform 0.3s ease;
}

.menu-toggle-icon::before {
    top: -8px;
}

.menu-toggle-icon::after {
    bottom: -8px;
}

/* Search Form */
.header-search {
    flex: 1;
    min-width: 200px;
    text-align: right;
}

.search-form {
    display: flex;
}

.search-form input[type="search"] {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
}

.search-form button {
    padding: 0.5rem 1rem;
    background-color: #007cba;
    color: white;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
}

/* Main Content */
.site-main {
    padding: 2rem 0;
    min-height: 60vh;
}

/* Article Styles */
.post-item {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.entry-header {
    margin-bottom: 1rem;
}

.entry-title {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.entry-meta {
    color: #666;
    font-size: 0.9rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.post-thumbnail {
    margin-bottom: 1.5rem;
}

.post-thumbnail img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.entry-content {
    margin-bottom: 1.5rem;
}

.entry-content p {
    margin-bottom: 1rem;
}

.read-more {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: #007cba;
    color: white;
    border-radius: 4px;
    font-weight: 500;
}

.read-more:hover {
    background-color: #005a87;
    color: white;
}

/* Sidebar */
.sidebar {
    padding: 2rem;
    background-color: #f9f9f9;
    border-radius: 8px;
}

.widget {
    margin-bottom: 2rem;
}

.widget-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #007cba;
}

/* Footer */
.site-footer {
    background-color: #333;
    color: #fff;
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}

.footer-widgets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-column {
    padding: 1rem;
}

.footer-title {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.footer-menu {
    list-style: none;
}

.footer-menu li {
    margin-bottom: 0.5rem;
}

.footer-menu a {
    color: #ccc;
}

.footer-menu a:hover {
    color: white;
}

.site-info {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 0.9rem;
}

.footer-bottom-menu {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 1rem;
    margin-top: 1rem;
}

.footer-bottom-menu a {
    color: #aaa;
}

.footer-bottom-menu a:hover {
    color: white;
}

/* Front Page Styles */
.welcome-section {
    background: linear-gradient(135deg, #007cba 0%, #005a87 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
}

.welcome-title {
    font-size: 3rem;
    color: white;
    margin-bottom: 1rem;
}

.welcome-description {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

.welcome-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: white;
    color: #007cba;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.3s ease;
}

.welcome-button:hover {
    transform: translateY(-3px);
    color: #005a87;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: #007cba;
    margin: 0.5rem auto;
}

.featured-posts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.featured-post {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.featured-post:hover {
    transform: translateY(-5px);
}

.featured-post-thumbnail {
    height: 200px;
    overflow: hidden;
}

.featured-post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.featured-post:hover .featured-post-thumbnail img {
    transform: scale(1.05);
}

.featured-post-content {
    padding: 1.5rem;
}

.featured-post-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.featured-post-excerpt {
    color: #666;
    margin-bottom: 1rem;
}

.featured-post-link {
    color: #007cba;
    font-weight: 500;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-title {
    margin-bottom: 1rem;
}

.service-description {
    color: #666;
}

.cta-section {
    background-color: #f8f9fa;
    padding: 5rem 0;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-description {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    color: #666;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: #007cba;
    color: white;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background-color: #005a87;
    transform: translateY(-3px);
}

/* Pagination */
.pagination {
    margin: 2rem 0;
}

.pagination-list {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 0.5rem;
}

.pagination-item a,
.pagination-item span {
    display: block;
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.pagination-item .current {
    background-color: #007cba;
    color: white;
    border-color: #007cba;
}

/* Breadcrumbs */
.breadcrumbs {
    background-color: #f8f9fa;
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 2rem;
}

.breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    gap: 0.5rem;
}

.breadcrumbs li:not(:last-child)::after {
    content: '›';
    margin-left: 0.5rem;
    color: #666;
}

/* Utility Classes */
.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

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

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* 导航菜单样式 */
.main-navigation {
    position: relative;
}

#primary-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

#primary-menu > li {
    position: relative;
    margin: 0 15px;
}

#primary-menu > li > a {
    display: block;
    padding: 15px 0;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    transition: color 0.3s ease;
}

#primary-menu > li > a:hover {
    color: #007cba;
}

#primary-menu > li.current-menu-item > a,
#primary-menu > li.current-menu-parent > a {
    color: #007cba;
}

/* 子菜单样式 */
#primary-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    min-width: 200px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
    list-style: none;
    padding: 10px 0;
    margin: 0;
}

#primary-menu .sub-menu li {
    margin: 0;
    padding: 0;
}

#primary-menu .sub-menu a {
    display: block;
    padding: 10px 20px;
    color: #333;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

#primary-menu .sub-menu a:hover {
    background-color: #f5f5f5;
    color: #007cba;
}

/* 悬停显示子菜单 */
#primary-menu > li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    position: relative;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: #333;
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: #333;
    left: 0;
    transition: transform 0.3s ease;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}