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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: #ffffff;
    color: #1e2a3a;
    line-height: 1.5;
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

ul,
ol {
    list-style: none;
}

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

a {
    color: #0b2b4f;
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #c73b3b;
}

.site-header {
    background: transparent;
    border-bottom: 1px solid rgba(234, 238, 242, 0.5);
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 0.75rem 0;
    transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.site-header.scrolled {
    background: #ffffff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border-bottom-color: #eaeef2;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: #0b2b4f;
}

.logo span {
    color: #c73b3b;
}

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

.main-nav a {
    font-weight: 500;
    color: #2c3e50;
    padding-bottom: 0.25rem;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s, color 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
    border-bottom-color: #c73b3b;
    color: #0b2b4f;
    text-decoration: none;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: #1e2a3a;
    line-height: 1;
    padding: 0.25rem;
}

.top-brief {
    background: #f2f6f9;
    padding: 0.75rem 0;
    font-size: 0.95rem;
    border-bottom: 1px solid #dce5ec;
    margin-bottom: 2rem;
}

.top-brief a {
    color: #c73b3b;
    font-weight: 600;
}

.breadcrumb {
    margin: 1.5rem 0 0;
    font-size: 0.95rem;
    background: #f8fafd;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    display: inline-block;
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    margin: 0;
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb li:not(:last-child)::after {
    content: "›";
    margin: 0 0.7rem;
    color: #9aaebb;
    font-weight: 300;
    font-size: 1.2rem;
    line-height: 1;
}

.breadcrumb a {
    color: #2c3e50;
    font-weight: 500;
}

.breadcrumb a:hover {
    color: #c73b3b;
    text-decoration: underline;
}

.breadcrumb .current {
    color: #7f8c8d;
    font-weight: 400;
}

.card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    transition: transform 0.2s ease, box-shadow 0.2s;
    border: 1px solid #f0f3f7;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 30px -10px rgba(0, 40, 80, 0.1);
}

.aspect-4x3 {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #eef2f6;
}

.aspect-4x3 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.card-content {
    padding: 1.25rem;
}

.card-tag {
    display: inline-block;
    background: #e6ecf3;
    color: #0b2b4f;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.8rem;
    border-radius: 30px;
    letter-spacing: 0.3px;
    margin-bottom: 0.6rem;
    text-transform: uppercase;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-title a {
    color: #1e2a3a;
}

.card-excerpt {
    color: #4a5a6e;
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    font-size: 0.85rem;
    color: #6b7c93;
}

.featured-grid {
    margin-bottom: 3rem;
}

.grid-col2 {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.card-large .card-title {
    font-size: 1.8rem;
}

.vertical-stack {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.card-horizontal {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.card-horizontal .card-img {
    flex: 0 0 240px;
}



.grid-col3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 2rem 0;
}

.section-heading {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    border-left: 6px solid #c73b3b;
    padding-left: 1.2rem;
    margin: 2.5rem 0 1.5rem;
}

.card-report {
    display: flex;
    flex-direction: column;
    background: #fafcfd;
    border: 1px solid #e1e8f0;
}

.special-report {
    margin-bottom: 3rem;
}

.topics-cloud {
    margin: 3rem 0;
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tag {
    background: #edf2f7;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    color: #1e2a3a;
    border: 1px solid transparent;
    transition: background 0.1s;
}

.tag:hover {
    background: #dde5ef;
    text-decoration: none;
}

.two-col-layout {
    display: grid;
    grid-template-columns: 70% 28%;
    gap: 2rem;
    margin: 2rem 0 3rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.8rem;
}

.cards-grid .card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.cards-grid .card-content {
    flex: 1;
}

.sidebar-widget {
    background: #f9fcff;
    border-radius: 24px;
    padding: 1.6rem;
    margin-bottom: 2rem;
    border: 1px solid #e7eef6;
}

.sidebar-widget h3 {
    font-size: 1.3rem;
    margin-bottom: 1.2rem;
    border-left: 4px solid #c73b3b;
    padding-left: 1rem;
}

.sidebar-widget ul {
    list-style: none;
}

.sidebar-widget li {
    margin-bottom: 0.9rem;
    border-bottom: 1px dashed #d8e2ed;
    padding-bottom: 0.6rem;
}

.sidebar-widget li:last-child {
    border-bottom: none;
}

.sidebar-widget a {
    color: #1e2a3a;
    font-weight: 500;
}

.post-count {
    display: block;
    color: #8a9bb0;
    font-size: 0.9rem;
}

.author-card {
    background: #ffffff;
    border: 1px solid #eef3f8;
    border-radius: 24px;
    padding: 1.8rem 1.5rem;
    text-align: center;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.02);
    margin-bottom: 2rem;
}

.author-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 1rem;
    border: 4px solid #f0f5fa;
}

.author-name {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #0b2b4f;
}

.author-bio {
    color: #4a5a6e;
    font-size: 0.95rem;
    line-height: 1.6;
}

.card-list-item {
    display: flex;
    gap: 1.5rem;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid #edf2f7;
    padding: 1rem;
}

.card-list-item .card-img {
    flex: 0 0 180px;
}

.card-list-item .card-content {
    padding: 0;
}

.card-list-item .card-title {
    font-size: 1.4rem;
}

.pagination {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin: 3rem 0;
}

.pagination a {
    padding: 0.5rem 1rem;
    border: 1px solid #d7e1ec;
    border-radius: 30px;
    color: #1e2a3a;
    transition: all 0.2s;
}

.pagination a:hover {
    background: #edf2f7;
    border-color: #b0c4d9;
    text-decoration: none;
}

.pagination a.active {
    background: #0b2b4f;
    color: white;
    border-color: #0b2b4f;
}

.pagination .prev,
.pagination .next {
    font-weight: 500;
}

.article-header {
    margin-bottom: 2rem;
}

.article-header h1 {
    font-size: 2.8rem;
    line-height: 1.2;
    margin: 0 0 0.75rem 0;
    color: #0b1c2e;
}

.article-subhead {
    font-size: 1.3rem;
    font-weight: 400;
    color: #4a5a6e;
    margin-bottom: 1.5rem;
    border-left: 4px solid #c73b3b;
    padding-left: 1.2rem;
}

.article-meta-line {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eaeef2;
    font-size: 0.95rem;
    color: #5f6f80;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.author-mini {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.author-mini img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.article-body {
    margin-bottom: 2.5rem;
    font-size: 0.985rem;
    letter-spacing: 0.2px;
    color: #171717;
    line-height: 1.75;
}

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

.article-body p {
    font-size: 0.985rem;
    letter-spacing: 0.2px;
    color: #171717;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.article-categories {
    display: flex;
    gap: 0.8rem;
    margin: 2rem 0 1.5rem;
}

.cat-link {
    background: #edf2f7;
    padding: 0.3rem 1.2rem;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #1e2a3a;
}

.author-bio-card {
    display: flex;
    gap: 1.5rem;
    background: #f8fbfe;
    border-radius: 28px;
    padding: 1.8rem;
    margin: 2rem 0 2rem;
    border: 1px solid #e2eaf2;
}

.author-bio-card img {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.author-bio-card h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.author-bio-card p {
    color: #3f5066;
    line-height: 1.5;
}

.share-block {
    margin: 2rem 0;
    padding: 1.5rem 0;
    border-top: 1px solid #e2eaf2;
    border-bottom: 1px solid #e2eaf2;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.share-label {
    font-weight: 600;
    color: #2c3e50;
}

.share-btn {
    background: #eef3f8;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #1e2a3a;
}

.share-btn:hover {
    background: #d5e1ec;
}

.comments-section {
    margin: 2.5rem 0;
}

.comments-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1.8rem;
    border-left: 4px solid #c73b3b;
    padding-left: 1rem;
}

.comment {
    padding: 1.2rem 0;
    border-bottom: 1px solid #e7edf3;
}

.comment strong {
    color: #0b2b4f;
}

.comment time {
    color: #7f8fa0;
    font-size: 0.85rem;
    margin-left: 0.5rem;
}

.comment p {
    margin: 0.3rem 0 0 0;
    color: #2a3b4e;
}

.comment-form {
    background: #f7fafd;
    padding: 2rem;
    border-radius: 28px;
    margin-top: 2rem;
}

.comment-form textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #cbd6e3;
    border-radius: 20px;
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
}

.comment-form button {
    background: #0b2b4f;
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 40px;
    font-weight: 600;
    margin-top: 0.8rem;
    cursor: default;
    transition: background 0.2s;
}

.comment-form button:hover {
    background: #1e3a5f;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.related-card {
    background: #fff;
    border: 1px solid #eef3f8;
    border-radius: 18px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.03);
}

.related-card .card-img {
    aspect-ratio: 4/3;
    overflow: hidden;
}

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

.related-card .card-content {
    padding: 0.9rem;
}

.related-card .card-title {
    font-size: 1rem;
    -webkit-line-clamp: 2;
    margin-bottom: 0.25rem;
}

.related-card .card-meta {
    font-size: 0.8rem;
}

.author-profile-card {
    background: #ffffff;
    border-radius: 32px;
    box-shadow: 0 10px 30px rgba(0, 20, 40, 0.05);
    padding: 2.5rem;
    margin: 2rem 0 3rem;
    border: 1px solid #eef3f8;
}

.author-profile-header {
    display: flex;
    gap: 2.5rem;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.author-profile-avatar {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    border: 6px solid #f0f5fa;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
}

.author-profile-title h1 {
    font-size: 2.8rem;
    margin: 0 0 0.3rem 0;
    color: #0b1c2e;
}

.author-profile-title .author-role {
    font-size: 1.3rem;
    color: #c73b3b;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.author-profile-meta {
    display: flex;
    gap: 2rem;
    margin-top: 0.8rem;
    color: #5f6f80;
}

.author-profile-meta span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.author-profile-bio {
    font-size: 1.2rem;
    line-height: 1.6;
    color: #2a3b4e;
    border-left: 4px solid #c73b3b;
    padding-left: 1.8rem;
    margin: 1.5rem 0 2rem;
}

.author-profile-body {
    font-size: 1rem;
    color: #171717;
    line-height: 1.7;
    letter-spacing: 0.2px;
}

.author-profile-body p {
    margin-bottom: 1.5rem;
}

.author-social {
    display: flex;
    gap: 1.2rem;
    margin: 2rem 0 0;
}

.author-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: #eef3f8;
    border-radius: 50%;
    color: #1e2a3a;
    font-size: 1.4rem;
    transition: background 0.2s, color 0.2s;
    text-decoration: none;
}

.author-social a:hover {
    background: #c73b3b;
    color: white;
}

.author-posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 3rem 0;
}

.author-posts-grid .card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.section-heading-author {
    font-size: 2rem;
    font-weight: 600;
    border-left: 6px solid #c73b3b;
    padding-left: 1.2rem;
    margin: 3rem 0 1.5rem;
}

.site-footer {
    background: #0f1e2f;
    color: #cfddee;
    margin-top: 3rem;
    padding: 1rem 0;
}

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

.footer-col h4 {
    color: #fff;
    margin-bottom: 1rem;
    font-weight: 600;
}

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

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

.footer-col a {
    color: #b0c6da;
    transition: color 0.2s;
}

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

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
}

.footer-logo span {
    color: #c73b3b;
}

.footer-bottom {
    text-align: center;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: #b0c6da;
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #1e2a3a;
    color: white;
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 1.8rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
}

.back-to-top:hover {
    background: #c73b3b;
}

@media (max-width: 1000px) {
    .two-col-layout {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 900px) {

    .grid-col2,
    .grid-col3,
    .footer-grid,
    .author-posts-grid {
        grid-template-columns: 1fr;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        border-top: 1px solid #eaeef2;
        padding: 1rem;
        box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
    }

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

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

    .hamburger {
        display: block;
    }

    .card-horizontal .card-img {
        flex: 0 0 80px;
    }

    .list-header {
        flex-direction: column;
        align-items: start;
        gap: 1rem;
    }

    .author-profile-header {
        flex-direction: column;
        text-align: center;
    }

    .author-profile-bio {
        border-left: none;
        border-top: 4px solid #c73b3b;
        padding-left: 0;
        padding-top: 1rem;
    }
}

@media (max-width: 768px) {
    .two-col-layout {
        grid-template-columns: 100%;
    }

    .site-header {
        position: relative;
    }

    .article-meta-line {
        gap: 0.5rem;
        font-size: 0.75rem;
    }

    .card-horizontal {
        display: block;
    }

    .article-header h1 {
        font-size: 1.8rem;
    }

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

@media (max-width: 600px) {

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

    .author-profile-card {
        padding: 1.5rem;
    }

    .author-profile-title h1 {
        font-size: 2rem;
    }

    .breadcrumb {
        font-size: 0.85rem;
        padding: 0.5rem 1rem;
    }
}

@media (max-width: 480px) {
    .article-header h1 {
        font-size: 1.4rem;
    }

    .breadcrumb li:not(:last-child)::after {
        margin: 0 0.3rem;
    }
}