:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #fafafa;
    --bg-white: #fff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
    --transition: all 0.3s ease;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background: var(--bg-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-color);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

.site-header {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary-color);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--primary-color);
    left: 0;
    transition: var(--transition);
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    top: 7px;
}

.menu-toggle.active .hamburger {
    background: transparent;
}

.menu-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.menu-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    color: var(--text-color);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.main-content {
    flex: 1;
    padding: 30px 20px;
}

.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.content-wrapper.with-sidebar {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.featured-section {
    padding: 20px 0 40px;
}

.featured-section .featured-grid {
    max-width: 1200px;
    margin: 0 auto;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.featured-item {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.featured-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.featured-main {
    grid-column: 1;
}

.featured-main .featured-image {
    height: 0;
    padding-top: 75%;
    position: relative;
    overflow: hidden;
}

.featured-sub .featured-image {
    height: 0;
    padding-top: 75%;
    position: relative;
    overflow: hidden;
}

.featured-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.featured-content {
    padding: 20px;
}

.featured-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--primary-color);
    line-height: 1.4;
}

.featured-excerpt {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.featured-meta {
    display: flex;
    gap: 15px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.categories-section {
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.categories-section .categories-grid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.categories-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.category-item {
    background: var(--bg-white);
    border-radius: 25px;
    padding: 10px 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.category-item:hover {
    background: var(--secondary-color);
}

.category-item:hover .category-link {
    color: white;
}

.category-link {
    color: var(--primary-color);
    font-weight: 500;
}

.latest-section {
    padding: 40px 0;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

@media (max-width: 1200px) {
    .articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 900px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.article-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.article-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.article-image {
    height: 200px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.article-content {
    padding: 20px;
}

.article-category {
    margin-bottom: 10px;
}

.article-category a {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--secondary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--primary-color);
    line-height: 1.4;
}

.article-excerpt {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-light);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--text-light);
}

.breadcrumb-separator {
    color: var(--text-light);
}

.breadcrumb-current {
    color: var(--text-color);
}

.post_tag_name {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    line-height: 1.3;
}

.category-layout,
.articles-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.article-detail {
    max-width: 1200px;
    margin: 0 auto;
}

.articles-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.article-item {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    margin-bottom: 30px;
}

.article-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.article-item .article-link {
    display: flex;
    flex-direction: row;
    gap: 0;
    align-items: center;
}

.article-item .article-image {
    width: 250px;
    height: 180px;
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
}

.article-item .article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.article-item:hover .article-image img {
    transform: scale(1.05);
}

.article-item .article-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 25px;
}

.article-item .article-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--primary-color);
    line-height: 1.4;
}

.article-item .article-excerpt {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-item .article-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-light);
}

.sidebar-container {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-widget {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

.widget-title {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--secondary-color);
}

.categories-list li {
    margin-bottom: 12px;
}

.categories-list a {
    display: block;
    color: var(--text-color);
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.categories-list a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.popular-list li {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.popular-list li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.popular-list a {
    display: block;
}

.article-date {
    display: block;
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 5px;
}

.article-title-list {
    color: var(--primary-color);
    font-weight: 500;
    line-height: 1.4;
}

.author-widget .author-info {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.author-widget .author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-widget .author-name {
    font-weight: 600;
    color: var(--primary-color);
    display: block;
    margin-bottom: 5px;
}

.author-widget .author-bio {
    font-size: 0.85rem;
    color: var(--text-light);
}

.pagination-wrapper {
    margin-top: 40px;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.page-link {
    display: inline-block;
    padding: 8px 14px;
    background: var(--bg-white);
    color: var(--text-color);
    border-radius: 6px;
    transition: var(--transition);
    min-width: 40px;
    text-align: center;
}

.page-link:hover {
    background: var(--secondary-color);
    color: white;
}

.page-link.active {
    background: var(--primary-color);
    color: white;
}

.page-link.disabled {
    color: var(--text-light);
    pointer-events: none;
}

.page-link.ellipsis {
    background: none;
    border: none;
}

.article-detail {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.article-detail .article-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.article-detail .article-title {
    font-size: 1rem;
    line-height: 1.3;
    margin-bottom: 15px;
}

.article-detail .article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
    font-size: 0.9rem;
}

.meta-date {
    color: var(--text-light);
}

.meta-updated {
    font-style: italic;
    margin-left: 5px;
}

.meta-share {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}

.share-label {
    color: var(--text-light);
}

.share-link {
    font-size: 0.85rem;
    padding: 5px 12px;
    background: var(--bg-color);
    border-radius: 4px;
    color: var(--text-color);
}

.share-link:hover {
    background: var(--secondary-color);
    color: white;
}

.article-category-list {
    margin-top: 15px;
}

.category-tag {
    display: inline-block;
    padding: 5px 15px;
    background: var(--secondary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-right: 10px;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.article-body {
    font-size: 0.985rem;
    letter-spacing: 0.2px;
    color: #171717;
    line-height: 1.75;
}

.article-body p {
    margin-bottom: 1.5em;
}

.article-body img {
    height: auto;
    max-width: 100%;
    margin: 2em auto;
    display: block;
}

.article-body h2 {
    font-size: 1.5rem;
    margin: 2em 0 1em;
    color: var(--primary-color);
}

.article-body h3 {
    font-size: 1.25rem;
    margin: 1.5em 0 0.75em;
    color: var(--primary-color);
}

.article-body ul,
.article-body ol {
    margin: 1em 0;
    padding-left: 1.5em;
}

.article-body li {
    margin-bottom: 0.5em;
    list-style: disc;
}

.article-body ol li {
    list-style: decimal;
}

.article-body blockquote {
    border-left: 4px solid var(--secondary-color);
    padding-left: 20px;
    margin: 1.5em 0;
    font-style: italic;
    color: var(--text-light);
}

.author-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.author-card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background: var(--bg-color);
    padding: 20px;
    border-radius: 12px;
}

.author-section .author-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.author-section .author-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 8px;
    display: block;
}

.author-section .author-description {
    font-size: 0.9rem;
    color: var(--text-light);
}

.article-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.nav-prev,
.nav-next {
    padding: 15px;
    background: var(--bg-color);
    border-radius: 8px;
}

.nav-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 5px;
}

.nav-prev a,
.nav-next a {
    font-weight: 500;
    color: var(--primary-color);
}

.related-articles {
    margin-top: 50px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.related-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.related-item {
    background: var(--bg-white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.related-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.related-image {
    height: 140px;
    overflow: hidden;
}

.related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-content {
    padding: 15px;
}

.related-category {
    font-size: 0.7rem;
    color: var(--secondary-color);
    text-transform: uppercase;
    font-weight: 600;
}

.related-article-title {
    font-size: 0.95rem;
    margin: 8px 0;
    color: var(--primary-color);
    line-height: 1.4;
}

.related-date {
    font-size: 0.8rem;
    color: var(--text-light);
}

.comment-section {
    margin-top: 50px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.comment-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.comment-form {
    max-width: 600px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.submit-btn {
    padding: 12px 30px;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    background: var(--primary-color);
}

.author-page {
    max-width: 900px;
    margin: 0 auto;
}

.author-header {
    display: flex;
    gap: 30px;
    align-items: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.author-avatar-large img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
}

.author-intro .author-name {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.author-tagline {
    font-size: 1.1rem;
    color: var(--text-light);
}

.author-bio {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-color);
}

.author-articles {
    margin-top: 50px;
}

.author-articles .section-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.author-articles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.alone-page {
    max-width: 800px;
    margin: 0 auto;
}

.alone-header {
    margin-bottom: 30px;
}

.alone-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    line-height: 1.3;
}

.alone-body {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-color);
}

.alone-body p {
    margin-bottom: 1.5em;
}

.alone-body img {
    max-width: 100%;
    height: auto;
    margin: 2em auto;
}

.all-articles-list {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow);
}

.article-simple-item {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.article-simple-item:last-child {
    border-bottom: none;
}

.article-simple-link {
    display: flex;
    gap: 20px;
    align-items: baseline;
}

.article-simple-date {
    flex-shrink: 0;
    font-size: 0.85rem;
    color: var(--text-light);
    min-width: 100px;
}

.article-simple-title {
    color: var(--primary-color);
    font-weight: 500;
    transition: var(--transition);
}

.article-simple-link:hover .article-simple-title {
    color: var(--secondary-color);
}

.site-footer {
    background: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: 30px 20px;
    margin-top: auto;
}

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

.footer-menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 25px;
}

.footer-menu a {
    color: var(--text-light);
    font-size: 0.9rem;
}

.footer-menu a:hover {
    color: var(--secondary-color);
}

@media (max-width: 1024px) {
    .featured-grid {
        grid-template-columns: 1fr;
    }

    .featured-main {
        grid-column: 1;
        grid-row: 1;
    }

    .articles-grid,
    .related-grid,
    .author-header {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .author-avatar-large img {
        width: 120px;
        height: 120px;
    }

    .author-intro .author-name {
        font-size: 1.5rem;
    }

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

    .content-wrapper.with-sidebar,
    .category-layout,
    .articles-layout,
    .article-layout {
        grid-template-columns: 1fr;
        max-width: 100%;
        margin: 0;
    }

    .sidebar-container {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .sidebar-widget {
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-white);
        box-shadow: -4px 0 20px rgba(0,0,0,0.1);
        padding: 80px 30px 30px;
        transition: right 0.3s ease;
    }

    .main-nav.active {
        right: 0;
    }

    .nav-menu {
        flex-direction: column;
        gap: 20px;
    }

    .nav-menu a {
        font-size: 1.1rem;
    }

    .header-container {
        height: 60px;
        padding: 10px 15px;
    }

    .logo {
        font-size: 1.3rem;
    }

    .articles-grid,
    .related-grid,
    .author-articles-grid {
        grid-template-columns: 1fr;
    }

    .article-item .article-link {
        flex-direction: column;
    }

    .article-item .article-image {
        width: 100%;
        height: 200px;
    }

    .article-detail {
        padding: 20px;
    }


    .article-detail .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .meta-share {
        margin-left: 0;
    }

    .article-navigation {
        grid-template-columns: 1fr;
    }

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

    .pagination {
        flex-wrap: wrap;
        gap: 5px;
        padding: 0 10px;
    }

    .page-link {
        padding: 6px 10px;
        min-width: 35px;
        font-size: 0.85rem;
    }

    .author-articles-grid {
        grid-template-columns: 1fr;
    }

    .alone-title {
        font-size: 1.8rem;
    }

    .sidebar-container {
        grid-template-columns: 1fr;
    }

    .all-articles-list {
        padding: 20px;
    }

    .article-simple-link {
        flex-direction: column;
        gap: 8px;
    }

    .article-simple-date {
        min-width: auto;
    }

    .post_tag_name {
        font-size: 1.5rem;
    }

    .article-body {
        font-size: 1rem;
    }

    h1 {
        font-size: 1.4em;
    }
}

@media (max-width: 480px) {
    .header-container {
        height: 55px;
    }

    .logo {
        font-size: 1.2rem;
    }

    .featured-main .featured-image {
        height: 250px;
    }

    .categories-grid {
        justify-content: center;
    }

    .category-item {
        padding: 8px 18px;
        font-size: 0.9rem;
    }


    .comment-form {
        max-width: 100%;
    }
}