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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #ffffff;
    color: #1e293b;
    line-height: 1.6;
    font-size: 16px;
    scroll-behavior: smooth;
}

a {
    text-decoration: none;
    color: inherit;
}

a:hover {
    text-decoration: underline;
}

ul,
ol {
    list-style: none;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.site-header {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.02);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(4px);
    border-bottom: 1px solid #f1f5f9;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(8px);
}

.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 600;
    letter-spacing: -0.5px;
    text-decoration: none;
    color: #0f172a;
}

.logo span {
    color: #3b82f6;
    font-weight: 300;
}

.main-nav .nav-list {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.main-nav a {
    text-decoration: none;
    color: #334155;
    font-weight: 500;
    transition: color 0.2s;
    font-size: 1.05rem;
}

.main-nav a:hover,
.main-nav a.active {
    color: #3b82f6;
    border-bottom: 2px solid #3b82f6;
    padding-bottom: 4px;
}

.menu-toggle {
    display: none;
    background: none;
    border: 1px solid #e2e8f0;
    font-size: 2rem;
    cursor: pointer;
    padding: 0 10px;
    border-radius: 8px;
    color: #334155;
}

.breadcrumb {
    background: #f8fafc;
    padding: 14px 24px;
    border-radius: 50px;
    margin-bottom: 32px;
    font-size: 0.95rem;
    border: 1px solid #eef2f6;
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    gap: 8px;
}

.breadcrumb li:not(:last-child)::after {
    content: "›";
    margin-left: 8px;
    color: #94a3b8;
}

.breadcrumb a {
    color: #3b82f6;
    text-decoration: none;
}

.breadcrumb .current {
    color: #1e293b;
    font-weight: 500;
}

.section {
    margin-bottom: 64px;
}

.block-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin: 24px 0;
    border-bottom: 2px solid #f1f5f9;
    padding-bottom: 10px;
}

.block-header h2 {
    font-size: 1.8rem;
    font-weight: 500;
    color: #0f172a;
}

.more-link {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
}

.card-grid {
    display: grid;
    gap: 32px;
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.card {
    background: #ffffff;
    border-radius: 20px;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.02);
    border: 1px solid #f1f5f9;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 30px -10px rgba(0, 100, 200, 0.1);
}

.card-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
    background: #e2e8f0;
}

.card-content {
    padding: 20px 16px 18px;
}

.tag {
    display: inline-block;
    background: #dbeafe;
    color: #2563eb;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 30px;
    margin-bottom: 10px;
    letter-spacing: 0.3px;
}

.card h3 {
    font-size: 1.2rem;
    line-height: 1.4;
    margin-bottom: 8px;
    font-weight: 600;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card h3 a {
    text-decoration: none;
    color: #0f172a;
}

.excerpt {
    color: #475569;
    font-size: 0.95rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
}

.meta {
    font-size: 0.85rem;
    color: #64748b;
    border-top: 1px solid #f1f5f9;
    padding-top: 12px;
}

.card-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.card-horizontal {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.card-horizontal .img-link {
    flex: 0 0 200px;
}

.href-img {
    display: block;
    flex: 0 0 230px;
    width: 100%;
    height: 100%;
    aspect-ratio: 4 / 3;
}

.card-horizontal .card-img {
    object-fit: cover;
    width: 100%;
    height: 100%;
}

.card-horizontal .card-content {
    flex: 1;
    padding: 0;
}

.special-reports {
    background: #f8fafc;
    padding: 48px 0;
    border-radius: 48px 48px 0 0;
}

.special-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-top: 24px;
}

.special-card {
    background: white;
    border-radius: 28px;
    overflow: hidden;
    border: 1px solid #e9eef3;
    transition: all 0.25s;
}

.special-card:hover {
    box-shadow: 0 20px 30px -12px rgba(59, 130, 246, 0.2);
}

.special-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.special-content {
    padding: 24px;
}

.hot-topics .topic-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.topic {
    background: #f1f5f9;
    color: #1e293b;
    padding: 8px 18px;
    border-radius: 40px;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: 0.15s;
}

.topic:hover {
    background: #3b82f6;
    color: white;
}

.top-banner {
    background: #f8fafc;
    padding: 12px 0;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 32px;
    font-size: 0.95rem;
}

.top-banner .breaking {
    background: #ef4444;
    color: white;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 20px;
    margin-right: 12px;
    font-size: 0.75rem;
    text-transform: uppercase;
}

.top-banner a {
    color: #3b82f6;
    font-weight: 500;
    text-decoration: none;
}

.list-layout {
    display: grid;
    grid-template-columns: 70% 28%;
    gap: 48px;
    margin-top: 24px;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.filter-bar {
    background: #f8fafc;
    padding: 16px 20px;
    border-radius: 60px;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.filter-select {
    padding: 8px 16px;
    border-radius: 30px;
    border: 1px solid #cbd5e1;
    background: white;
    font-size: 0.9rem;
    color: #0f172a;
}

.pagination {
    margin-top: 48px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    display: inline-flex;
    min-width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: 40px;
    background: #f1f5f9;
    color: #334155;
    text-decoration: none;
    font-weight: 500;
}

.pagination a.active,
.pagination a:hover {
    background: #3b82f6;
    color: white;
}

.sidebar-widget {
    background: #f9f9fc;
    border-radius: 28px;
    padding: 24px;
    margin-bottom: 32px;
    border: 1px solid #eef2f6;
}

.sidebar-widget h3 {
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 20px;
    border-left: 5px solid #3b82f6;
    padding-left: 16px;
}

.post-list {
    list-style: none;
}

.post-list li {
    margin-bottom: 16px;
    border-bottom: 1px dashed #dce3ec;
    padding-bottom: 12px;
}

.post-list li:last-child {
    border-bottom: none;
}

.post-list a {
    color: #1e293b;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.15s;
    display: block;
    line-height: 1.4;
}

.post-list a:hover {
    color: #3b82f6;
}

.post-list .meta {
    font-size: 0.8rem;
    color: #64748b;
    margin-top: 4px;
    border-top: none;
    padding-top: 0;
}

.category-list {
    list-style: none;
}

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

.category-list a {
    display: flex;
    justify-content: space-between;
    color: #334155;
    text-decoration: none;
    padding: 10px 0;
    border-bottom: 1px solid #edf2f7;
}

.category-list a:hover {
    color: #3b82f6;
}

.category-list .count {
    background: #e2e8f0;
    border-radius: 30px;
    padding: 2px 10px;
    font-size: 0.8rem;
}

.author-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: white;
    border-radius: 28px;
    padding: 28px 20px;
    border: 1px solid #f1f5f9;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
    margin-bottom: 32px;
}

.author-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #dbeafe;
    margin-bottom: 16px;
}

.author-name {
    font-size: 1.4rem;
    font-weight: 600;
    color: #0f172a;
    margin-bottom: 8px;
}

.author-bio {
    color: #475569;
    font-size: 0.95rem;
    line-height: 1.5;
}

.article-header .subhead {
    font-size: 1.3rem;
    font-weight: 400;
    color: #475569;
    margin: 0 0 16px 0;
    line-height: 1.5;
    border-left: 4px solid #3b82f6;
    padding-left: 20px;
}

.meta-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 20px;
    margin: 16px 0 24px;
    padding: 12px 0;
    border-top: 1px solid #f1f5f9;
    border-bottom: 1px solid #f1f5f9;
}

.author-mini {
    display: flex;
    align-items: center;
    gap: 10px;
}

.author-mini img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.author-mini span {
    font-weight: 600;
    color: #0f172a;
}

.meta-stats {
    display: flex;
    gap: 20px;
    color: #64748b;
    font-size: 0.9rem;
}

.meta-stats i {
    font-style: normal;
    margin-right: 4px;
    opacity: 0.8;
}

.article-body {
    font-size: 0.985rem;
    letter-spacing: 0.2px;
    color: #171717;
    line-height: 1.7;
}

.article-body img {
    margin: 0 auto;
}

.article-body p {
    margin-bottom: 1.8rem;
}

.article-body h2 {
    font-size: 1.6rem;
    margin: 2rem 0 1rem;
    font-weight: 600;
}

.article-body blockquote {
    margin: 2rem 0;
    font-style: italic;
    background: #f8fafc;
    border-left: 6px solid #3b82f6;
    padding: 1.5rem;
    border-radius: 12px;
}

.author-bio-card {
    display: flex;
    gap: 24px;
    background: #f8fafc;
    border-radius: 28px;
    padding: 32px;
    margin: 40px 0 32px;
    border: 1px solid #e9eef3;
}

.author-bio-card img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid white;
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.05);
}

.author-bio-card .bio-content {
    flex: 1;
}

.author-bio-card h3 {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.author-bio-card .author-role {
    color: #3b82f6;
    font-weight: 500;
    margin-bottom: 12px;
}

.author-bio-card p {
    color: #334155;
    line-height: 1.6;
}

.share-section {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    margin: 32px 0;
    padding: 20px 0;
    border-top: 1px solid #f1f5f9;
    border-bottom: 1px solid #f1f5f9;
}

.share-label {
    font-weight: 600;
    color: #1e293b;
}

.share-buttons {
    display: flex;
    gap: 10px;
}

.share-btn {
    background: #f1f5f9;
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 42px;
    font-size: 1.3rem;
    cursor: pointer;
    color: #334155;
    transition: 0.15s;
}

.share-btn:hover {
    background: #3b82f6;
    color: white;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 24px 0 40px;
}

.related-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid #f1f5f9;
    transition: transform 0.2s;
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 24px -8px rgba(0, 100, 200, 0.12);
}

.related-card img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.related-card .related-content {
    padding: 16px;
}

.related-card h4 {
    font-size: 1rem;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-card h4 a {
    color: #0f172a;
    text-decoration: none;
}

.related-card .meta {
    font-size: 0.75rem;
    border-top: none;
    padding-top: 0;
}

.comments-section {
    margin-top: 48px;
    background: #f9f9fc;
    border-radius: 32px;
    padding: 32px;
}

.comment {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.comment-form textarea {
    width: 100%;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    padding: 16px;
    font-family: inherit;
    background: white;
}

.comment-form button {
    background: #e2e8f0;
    color: #64748b;
    padding: 12px 30px;
    border: none;
    border-radius: 30px;
    margin-top: 16px;
    font-weight: 500;
    cursor: default;
}

.author-header {
    display: flex;
    gap: 40px;
    align-items: center;
    margin: 32px 0 48px;
    background: #f8fafc;
    border-radius: 48px;
    padding: 48px;
    border: 1px solid #eef2f6;
}

.author-header img {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    border: 6px solid white;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

.author-header h1 {
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: #0f172a;
}

.author-role {
    font-size: 1.2rem;
    color: #3b82f6;
    font-weight: 500;
    margin-bottom: 16px;
}

.author-bio-short {
    font-size: 1.1rem;
    color: #334155;
    max-width: 600px;
    line-height: 1.5;
}

.author-social {
    margin-top: 20px;
    display: flex;
    gap: 16px;
}

.author-social a {
    background: #ffffff;
    border: 1px solid #d1d9e6;
    width: 44px;
    height: 44px;
    border-radius: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #334155;
    text-decoration: none;
    font-size: 1.3rem;
    transition: 0.15s;
}

.author-social a:hover {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.author-detail-body {
    margin: 0 auto 48px;
    font-size: 1.05rem;
    line-height: 1.7;
    color: #1e293b;
}

.author-detail-body p {
    margin-bottom: 1.8rem;
}

.author-detail-body h2 {
    font-size: 1.8rem;
    margin: 2.5rem 0 1rem;
    font-weight: 600;
}

.author-posts {
    margin-top: 48px;
    border-top: 2px solid #f1f5f9;
    padding-top: 40px;
}

.author-posts h2 {
    font-size: 2rem;
    margin-bottom: 32px;
    font-weight: 500;
}

.author-posts .card-horizontal {
    margin-bottom: 24px;
}

#backToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 30px;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 6px 14px rgba(0, 80, 200, 0.25);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 99;
    transition: 0.2s;
}

#backToTop:hover {
    background: #1e4f9c;
}

.site-footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 56px 0 32px;
    margin-top: 64px;
}

.site-footer p {
    text-align: center;
    margin: 0;
}

.site-footer a {
    color: #cbd5e1;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-logo {
    font-size: 2rem;
    font-weight: 600;
    color: white;
    margin-bottom: 12px;
}

.footer-logo span {
    color: #60a5fa;
}

.footer-col h4 {
    color: white;
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 20px;
}

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

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

.footer-col a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s;
}

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

@media (max-width: 900px) {

    .grid-2,
    .grid-3,
    .special-grid,
    .list-layout,
    .footer-grid {
        grid-template-columns: 100%;
    }

    .card-horizontal {
        flex-direction: column;
    }

    .card-horizontal .img-link,
    .card-horizontal .card-img {
        width: 100%;
    }

    .list-layout {
        gap: 20px;
    }

    .menu-toggle {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: 54px;
        left: 0;
        right: 0;
        background: white;
        border-bottom: 1px solid #e2e8f0;
        padding: 20px;
        display: none;
    }

    .main-nav.active {
        display: block;
    }

    .main-nav .nav-list {
        flex-direction: column;
        gap: 1rem;
    }

    .article-header h1 {
        font-size: clamp(1.4rem, 7vw, 1.8rem);
        line-height: 1.3;
    }

    .author-bio-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

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

    .author-header {
        flex-direction: column;
        text-align: center;
        padding: 32px 24px;
    }

    .author-header img {
        width: 140px;
        height: 140px;
    }

    .author-header h1 {
        font-size: 2.4rem;
    }

    .author-social {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .site-header {
        position: relative;
    }

    .header-flex {
        height: 54px;
    }

    .meta-bar {
        gap: 0.5rem;
    }

    .author-mini span,
    .meta-stats {
        font-size: 0.7rem;
    }
}

@media (max-width: 600px) {
    .author-header h1 {
        font-size: 2rem;
    }
}