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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: #fafafa;
    color: #1e2a3a;
    line-height: 1.6;
    scroll-behavior: smooth;
}

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

ul,
li {
    list-style: none;
}

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

.container {
    width: 90%;
    max-width: 1280px;
    margin: 0 auto;
}


.site-header {
    background: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid #eaeef2;
    transition: background 0.3s, box-shadow 0.3s;
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    box-shadow: 0 6px 20px rgba(0, 20, 30, 0.1);
    border-bottom-color: transparent;
}

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

.logo a {
    font-size: 1.8rem;
    font-weight: 600;
    text-decoration: none;
    color: #0b2b40;
    letter-spacing: -0.02em;
}

.logo span {
    color: #4a7c9c;
    font-weight: 300;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: #1e2a3a;
    padding: 0 10px;
}

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

.main-nav a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    font-size: 1.05rem;
    transition: color 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
    color: #4a7c9c;
    border-bottom: 2px solid #4a7c9c;
    padding-bottom: 4px;
}


.announcement-bar {
    background: #eef3f7;
    padding: 10px 0;
    border-bottom: 1px solid #d9e2e9;
    font-size: 0.95rem;
}

.announcement-bar p {
    display: flex;
    align-items: center;
    gap: 8px;
}

.announcement-bar a {
    color: #2b5f8a;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}


.breadcrumb {
    padding: 1.2rem 0 0.5rem;
    font-size: 0.9rem;
}

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

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

.breadcrumb li:not(:last-child)::after {
    content: "›";
    margin: 0 10px;
    color: #8da3b5;
}

.breadcrumb a {
    color: #4a7c9c;
    text-decoration: none;
}

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

.breadcrumb [aria-current="page"] {
    color: #1f405b;
    font-weight: 500;
}


.section {
    padding: 3.5rem 0;
    border-bottom: 1px solid #eaeef2;
}

.section-title {
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 2.5rem;
    letter-spacing: -0.01em;
    color: #1a2b38;
}

.section-title span {
    font-weight: 600;
    color: #4a7c9c;
}


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

.card-feature-a,
.card-feature-b {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.03);
    transition: transform 0.3s ease, box-shadow 0.3s;
    border: 1px solid #eff3f6;
}

.card-feature-b {
    display: flex;
}

.card-feature-b .card-img {
    aspect-ratio: initial;
    flex: 0 0 40%;
}


.card-feature-a:hover,
.card-feature-b:hover {
    transform: translateY(-6px);
    box-shadow: 0 25px 40px rgba(0, 40, 60, 0.08);
}

.card-img {
    width: 100%;
    aspect-ratio: 4/3;
    background-size: cover;
}

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

.card-content {
    padding: 1.5rem;
}

.card-tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: #e0eaf1;
    padding: 3px 10px;
    border-radius: 30px;
    display: inline-block;
    margin-bottom: 0.8rem;
    font-weight: 600;
    color: #2b5f8a;
}

.card-feature-a h3,
.card-feature-b h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    line-height: 1.3;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.card-feature-a h3 a,
.card-feature-b h3 a {
    text-decoration: none;
    color: inherit;
}

.card-excerpt {
    color: #4a5f70;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    font-size: 0.85rem;
    color: #6b7f8f;
    border-top: 1px dashed #dbe4ea;
    padding-top: 0.8rem;
}

.author {
    font-weight: 600;
    color: #1e3f5c;
}


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

.card-c {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.02);
    transition: all 0.2s;
    border: 1px solid #eef2f5;
    padding-bottom: 1.2rem;
}

.card-c:hover {
    box-shadow: 0 16px 28px rgba(0, 50, 70, 0.06);
    transform: scale(1.01);
}

.card-c .card-img {
    margin-bottom: 0.8rem;
}

.card-cat {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    color: #4a7c9c;
    text-transform: uppercase;
    margin-left: 1rem;
    background: #e6f0f8;
    padding: 2px 12px;
    border-radius: 30px;
}

.card-c h3 {
    font-size: 1.2rem;
    margin: 0.7rem 1rem 0.5rem;
    font-weight: 600;
    line-height: 1.4;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.card-c h3 a {
    text-decoration: none;
    color: #1a2b38;
}

.card-c .card-excerpt {
    margin: 0 1rem 1rem;
    font-size: 0.9rem;
    color: #546e7a;
}

.card-c .card-meta {
    margin: 0 1rem;
    border-top: none;
    padding-top: 0;
    font-size: 0.8rem;
}


.topics-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
}

.topic-item {
    background: white;
    border-radius: 40px;
    padding: 1.2rem 0.5rem;
    text-align: center;
    text-decoration: none;
    color: inherit;
    border: 1px solid #e2eaf1;
    transition: all 0.2s;
}

.topic-item:hover {
    background: #eef3f7;
    border-color: #9fbad0;
    transform: translateY(-3px);
}

.topic-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 5px;
}

.topic-name {
    font-weight: 600;
    display: block;
    font-size: 1rem;
}

.topic-count {
    font-size: 0.8rem;
    color: #62778b;
}


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

.card-d {
    background: white;
    border-radius: 28px;
    overflow: hidden;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.02);
    transition: all 0.3s;
}

.card-d:hover {
    box-shadow: 0 25px 35px rgba(29, 53, 86, 0.08);
    transform: translateY(-5px);
}

.card-d-content {
    padding: 1.3rem 1.5rem 1.8rem;
}

.label {
    font-size: 0.7rem;
    background: #d1e0ed;
    color: #1b3a5c;
    padding: 3px 15px;
    border-radius: 40px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.card-d h4 {
    margin: 0.8rem 0 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.4;
    max-height: 2.8rem;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.card-d h4 a {
    text-decoration: none;
    color: #0b2b40;
}

.excerpt-sm {
    color: #546e7a;
    font-size: 0.9rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}


.chips-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.chip {
    background: white;
    border: 1px solid #cbdae6;
    padding: 8px 18px;
    border-radius: 60px;
    text-decoration: none;
    color: #1f3b54;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.1s;
}

.chip:hover {
    background: #1e3b4e;
    color: white;
    border-color: #1e3b4e;
}


.list-header {
    background: #f4f8fc;
    padding: 2rem 0;
    border-bottom: 1px solid #e0e9f0;
}

.list-header h1 {
    font-size: 2.6rem;
    font-weight: 400;
}

.subhead {
    font-size: 1.2rem;
    color: #4b6377;
}

.filter-bar {
    display: flex;
    gap: 2rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid #eaeef2;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-select {
    padding: 8px 20px 8px 12px;
    border: 1px solid #bccbd8;
    border-radius: 40px;
    background: white;
    font-size: 0.95rem;
    color: #1e2f40;
    cursor: pointer;
}

.list-content {
    display: grid;
    grid-template-columns: 70% 28%;
    gap: 3rem;
    padding: 3rem 0;
}

.list-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    background: white;
    border-radius: 24px;
    padding: 1.2rem;
    border: 1px solid #f0f5fa;
    transition: all 0.2s;
}

.list-item:hover {
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.02);
}

.list-img {
    aspect-ratio: 4/3;
    flex: 0 0 35%;
}

.list-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 16px;
}

.list-text {
    flex: 1;
}

.item-cat {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: #4a7c9c;
    font-weight: 600;
}

.list-text h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 4px 0 6px;
    line-height: 1.3;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.list-text h3 a {
    text-decoration: none;
    color: #1a2a36;
}

.item-excerpt {
    color: #526477;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.item-meta {
    font-size: 0.85rem;
    color: #6a7e90;
}

.pagination {
    margin-top: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.page-link {
    padding: 8px 14px;
    border: 1px solid #cddbe8;
    border-radius: 40px;
    text-decoration: none;
    color: #1e2f40;
    transition: 0.1s;
}

.page-link.active,
.page-link:hover {
    background: #1d364b;
    color: white;
    border-color: #1d364b;
}


.list-sidebar {
    background: #f7fafd;
    padding: 1.8rem 1.5rem;
    border-radius: 32px;
    border: 1px solid #e6edf4;
    height: fit-content;
}

.sidebar-widget {
    margin-bottom: 2rem;
}

.sidebar-widget h4 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 500;
    border-bottom: 1px solid #d8e3ed;
    padding-bottom: 6px;
}

.author-card {
    text-align: center;
    padding: 2rem 1.5rem;
    background: white;
    border-radius: 32px;
    border: 1px solid #eef2f6;
    margin-bottom: 2rem;
}

.author-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin:0 auto 1rem;
    border: 3px solid #deeaf3;
}

.author-name {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.author-bio {
    color: #546e7a;
    font-size: 0.9rem;
    line-height: 1.5;
}

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

.related-item {
    display: flex;
    gap: 12px;
    margin-bottom: 1.2rem;
    align-items: flex-start;
}

.related-img {
    width: 70px;
    height: 70px;
    border-radius: 12px;
    flex-shrink: 0;
}

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

.related-content {
    flex: 1;
}

.related-title {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-title a {
    text-decoration: none;
    color: #1d2f3f;
}

.related-title a:hover {
    color: #2b5f8a;
}

.related-meta {
    font-size: 0.75rem;
    color: #708a9c;
}

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

.update-list li {
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
    border-bottom: 1px dashed #d8e4ed;
    padding-bottom: 0.5rem;
}

.update-list a {
    text-decoration: none;
    color: #2b4d6a;
    font-weight: 500;
}

.update-list a:hover {
    color: #102331;
}

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

.category-list li {
    margin-bottom: 0.7rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-list a {
    text-decoration: none;
    color: #2c577b;
    font-weight: 500;
}

.category-list a:hover {
    color: #102331;
}

.category-count {
    background: #e3ecf3;
    padding: 2px 10px;
    border-radius: 30px;
    font-size: 0.75rem;
    color: #1e405b;
}


.article-main {
    background: white;
    border-radius: 32px;
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.02);
    margin-bottom: 2rem;
}

.article-subhead {
    font-size: 1.3rem;
    color: #4b6a81;
    margin: 0.5rem 0 1.5rem;
    font-weight: 400;
    line-height: 1.4;
    border-left: 4px solid #b2cde0;
    padding-left: 1.2rem;
}

.article-meta-bar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    padding: 1rem 0;
    border-top: 1px solid #e6eef5;
    border-bottom: 1px solid #e6eef5;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    color: #4f6f86;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.author-thumb {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.article-views::before {
    content: "👁️";
    opacity: 0.7;
}

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

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

.article-content p {
    margin-bottom: 1.5rem;
}

.article-content h2 {
    font-size: 1.6rem;
    margin: 2rem 0 1rem;
    font-weight: 500;
}

.article-content h3 {
    font-size: 1.3rem;
    margin: 1.8rem 0 0.8rem;
    font-weight: 500;
}

.article-content blockquote {
    margin: 2rem 0;
    padding: 1.2rem 2rem;
    background: #f4f9fe;
    border-left: 5px solid #4a7c9c;
    font-style: italic;
    color: #1e405b;
    border-radius: 0 30px 30px 0;
}

.article-footer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin: 2rem 0 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e3ecf3;
}

.article-tag {
    background: #ecf3f9;
    padding: 5px 16px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 500;
    color: #204d72;
    text-decoration: none;
}

.article-tag:hover {
    background: #cde0ee;
}

.author-detailed-card {
    display: flex;
    gap: 1.5rem;
    background: #f6fafd;
    border-radius: 40px;
    padding: 2rem;
    margin: 2.5rem 0;
    border: 1px solid #e0ebf3;
}

.author-detailed-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid white;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.05);
}

.author-detailed-info h4 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.author-detailed-bio {
    color: #3e5e74;
    font-size: 0.95rem;
    line-height: 1.6;
}

.share-block-large {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.2rem;
    flex-wrap: wrap;
    margin: 2rem 0;
}

.share-btn {
    background: white;
    border: 1px solid #c3d5e5;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.1s;
}

.share-btn:hover {
    background: #1d364b;
    color: white;
    border-color: #1d364b;
}

.comments-section {
    background: white;
    border-radius: 32px;
    padding: 2rem;
    margin: 2rem 0;
}

.comment-item {
    padding: 1.2rem 0;
    border-bottom: 1px solid #e8f0f7;
}

.comment-header {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 0.5rem;
}

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

.comment-author {
    font-weight: 600;
}

.comment-date {
    font-size: 0.8rem;
    color: #6f8da0;
}

.comment-text {
    color: #2b4052;
    line-height: 1.5;
    margin-left: 3.5rem;
}

.comment-form {
    margin-top: 2rem;
}

.comment-form textarea {
    width: 100%;
    border: 1px solid #cbdbe8;
    border-radius: 24px;
    padding: 1rem;
    background: #fcfdff;
    font-family: inherit;
}

.comment-form button {
    background: #b3c9dc;
    color: white;
    border: none;
    padding: 10px 28px;
    border-radius: 60px;
    font-weight: 600;
    margin-top: 8px;
    cursor: not-allowed;
}

.comment-note {
    font-size: 0.8rem;
    color: #8ba0b0;
}

.related-horizontal {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 2rem 0 0;
}

.related-card-sm {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid #eaf1f7;
    transition: transform 0.2s;
}

.related-card-sm:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 25px rgba(0, 40, 60, 0.06);
}

.related-card-sm .card-img {
    aspect-ratio: 4/3;
    background-size: cover;
}

.related-card-sm .card-content {
    padding: 1rem;
}

.related-card-sm h5 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;

}

.related-card-sm h5 a {
    color: inherit;
}


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


.site-footer {
    background: #16212b;
    color: #cedce8;
    padding: 3rem 0 2rem;
    margin-top: 3rem;
}

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

.site-footer a {
    color: #cedce8;
}

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

.footer-col h4 {
    color: white;
    margin-bottom: 1rem;
    font-weight: 500;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.5rem;
}

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

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

.footer-col a {
    color: #b2c9dd;
    text-decoration: none;
}

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


.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #1d364b;
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.6rem;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
    z-index: 99;
    transition: 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
}

.back-to-top:hover {
    background: #0f2638;
    opacity: 1;
}


@media (max-width: 900px) {
    .card-feature-b {
        display: block;
    }

    .article-title {
        font-size: 1.4rem;
    }

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

    .site-header {
        position: relative;
    }

    .header-container {
        height: 54px;
    }

    .hamburger {
        display: block;
    }

    .main-nav {
        position: absolute;
        top: 54px;
        left: 0;
        width: 100%;
        background: white;
        border-top: 1px solid #e0e9f0;
        box-shadow: 0 30px 30px rgba(0, 0, 0, 0.02);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
    }

    .main-nav.active {
        max-height: 500px;
    }

    .main-nav ul {
        flex-direction: column;
        padding: 1.5rem;
        gap: 1.2rem;
    }

    .featured-grid,
    .card-grid-3,
    .report-grid,
    .topics-grid,
    .list-content {
        grid-template-columns: 100%;
    }

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

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

    .list-item {
        flex-direction: column;
    }

    .list-img {
        width: 100%;
        aspect-ratio: 4/3;
    }

    .filter-bar {
        flex-direction: column;
        gap: 0.5rem;
    }

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

    .article-main {
        padding: 1.5rem;
    }

    .article-subhead {
        font-size: 1.1rem;
    }

    .author-detailed-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 1.5rem;
    }

    h1 {
        font-size: 1.6rem;

    }
}