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

body {
    font-family: Arial, Helvetica, sans-serif;
    color: #333;
    line-height: 1.6;
}

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

/* Navigation */
.navbar {
    background-color: #0A1F3C;
    padding: 0 40px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-text {
    color: white;
    font-size: 24px;
    font-weight: bold;
    letter-spacing: 3px;
}

.logo-underline {
    width: 40px;
    height: 3px;
    background-color: #FF6B00;
    margin-top: 2px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-link {
    color: white;
    font-size: 14px;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s;
}

.nav-link:hover {
    color: #FF6B00;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #FF6B00;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.lang-btn {
    color: white;
    border: 1px solid white;
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 12px;
    transition: all 0.3s;
}

.lang-btn:hover {
    background-color: white;
    color: #0A1F3C;
}

.search-icon {
    color: white;
    cursor: pointer;
}

/* Search Overlay */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 31, 60, 0.97);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.search-overlay.active {
    opacity: 1;
    visibility: visible;
}
.search-popup {
    width: 600px;
    max-width: 90vw;
    position: relative;
}
.search-input-wrap {
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 2px solid #FF6B00;
    padding-bottom: 12px;
}
.search-input-wrap svg {
    color: rgba(255,255,255,0.5);
    flex-shrink: 0;
}
.search-input-wrap input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: white;
    font-size: 22px;
    padding: 8px 0;
}
.search-input-wrap input::placeholder {
    color: rgba(255,255,255,0.35);
}
.search-close {
    position: absolute;
    top: -50px;
    right: 0;
    color: rgba(255,255,255,0.6);
    cursor: pointer;
    font-size: 36px;
    background: none;
    border: none;
    line-height: 1;
    transition: color 0.3s;
}
.search-close:hover {
    color: #FF6B00;
}
.search-submit-btn {
    margin-top: 18px;
    padding: 12px 36px;
    background: #FF6B00;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    align-self: flex-end;
}
.search-submit-btn:hover {
    background: #e05c00;
    box-shadow: 0 4px 15px rgba(255, 107, 0, 0.4);
}

/* Main Content */
.main-container {
    margin-top: 70px;
    background-color: #F5F5F5;
    min-height: calc(100vh - 70px);
}

/* Breadcrumb */
.breadcrumb-bar {
    background-color: white;
    padding: 15px 20px;
    border-bottom: 1px solid #E0E0E0;
}

.breadcrumb-container {
    max-width: 1200px;
    margin: 0 auto;
    font-size: 14px;
    color: #666;
}

.breadcrumb-container a {
    color: #0066CC;
    transition: color 0.3s;
}

.breadcrumb-container a:hover {
    color: #FF6B00;
}

/* Content Layout */
.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 40px;
}

/* Article Content */
.article-content {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
}

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

.article-title {
    font-size: 36px;
    font-weight: bold;
    color: #0A1F3C;
    line-height: 1.3;
    margin-bottom: 15px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.article-tag {
    background-color: #FF6B00;
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.article-date {
    color: #666;
    font-size: 14px;
}

.article-read-time {
    color: #999;
    font-size: 14px;
}

.featured-image {
    height: 400px;
    background: linear-gradient(135deg, #0A1F3C 0%, #1a3a6c 50%, #2d5a9e 100%);
    background-image: url('images/shenzhen-skyline.jpg');
    background-size: cover;
    background-position: center;
    border-radius: 12px;
    margin-bottom: 35px;
    position: relative;
    overflow: hidden;
}

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

.featured-image::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}

.featured-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 800 100' preserveAspectRatio='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0,100 L0,60 L40,60 L40,45 L80,45 L80,55 L120,55 L120,35 L160,35 L160,50 L200,50 L200,30 L240,30 L240,45 L280,45 L280,60 L320,60 L320,40 L360,40 L360,55 L400,55 L400,25 L440,25 L440,50 L480,50 L480,45 L520,45 L520,65 L560,65 L560,40 L600,40 L600,55 L640,55 L640,35 L680,35 L680,50 L720,50 L720,60 L760,60 L760,45 L800,45 L800,100 Z' fill='%23ffffff' fill-opacity='0.1'/%3E%3C/svg%3E") no-repeat bottom;
    background-size: cover;
}

.article-body {
    color: #444;
    font-size: 16px;
    line-height: 1.8;
}

.article-body p {
    margin-bottom: 20px;
}

/* Quote Box */
.quote-box {
    background-color: #F5F5F5;
    border-left: 4px solid #FF6B00;
    padding: 25px 30px;
    margin: 30px 0;
    border-radius: 0 8px 8px 0;
}

.quote-text {
    font-size: 18px;
    font-style: italic;
    color: #0A1F3C;
    line-height: 1.7;
    margin-bottom: 10px;
}

.quote-source {
    color: #666;
    font-size: 14px;
}

/* Section Title */
.section-title {
    font-size: 24px;
    font-weight: bold;
    color: #0A1F3C;
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #E0E0E0;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.stat-card {
    background-color: #F5F5F5;
    padding: 25px;
    border-radius: 10px;
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: #FF6B00;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: #666;
    margin-bottom: 5px;
}

.stat-desc {
    font-size: 12px;
    color: #999;
}

/* Venue Image */
.venue-image {
    height: 250px;
    background: linear-gradient(135deg, #1a3a6c, #2d5a9e);
    background-image: url('images/exhibition-center.jpg');
    background-size: cover;
    background-position: center;
    border-radius: 12px;
    margin: 30px 0;
    position: relative;
    overflow: hidden;
}

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

.venue-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 600 60' preserveAspectRatio='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0,60 L0,35 L50,35 L50,25 L100,25 L100,40 L150,40 L150,20 L200,20 L200,35 L250,35 L250,45 L300,45 L300,15 L350,15 L350,30 L400,30 L400,40 L450,40 L450,25 L500,25 L500,35 L550,35 L550,50 L600,50 L600,60 Z' fill='%23ffffff' fill-opacity='0.15'/%3E%3C/svg%3E") no-repeat bottom;
    background-size: cover;
}

/* Key Highlights */
.highlights-list {
    list-style: none;
    margin: 20px 0;
}

.highlights-list li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    color: #444;
    font-size: 15px;
}

.highlights-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background-color: #FF6B00;
    border-radius: 50%;
}

/* Tags */
.tags-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #E0E0E0;
}

.tags-label {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    background-color: #E3F2FD;
    color: #0066CC;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    transition: all 0.3s;
}

.tag:hover {
    background-color: #0066CC;
    color: white;
}

/* Share Section */
.share-section {
    margin-top: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.share-label {
    font-size: 14px;
    color: #666;
}

.share-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #F5F5F5;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
}

.share-btn:hover {
    background-color: #0066CC;
}

.share-btn:hover svg {
    fill: white;
}

.share-btn svg {
    width: 18px;
    height: 18px;
    fill: #666;
}

/* Sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.sidebar-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
}

.sidebar-title {
    font-size: 18px;
    font-weight: bold;
    color: #0A1F3C;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #E0E0E0;
}

/* Related News */
.related-news {
    list-style: none;
}

.related-item {
    display: flex;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid #F0F0F0;
    transition: all 0.3s;
}

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

.related-item:hover {
    transform: translateX(5px);
}

.related-thumb {
    width: 80px;
    height: 60px;
    border-radius: 8px;
    background: linear-gradient(135deg, #1a3a6c, #2d5a9e);
    background-size: cover;
    background-position: center;
    flex-shrink: 0;
}

.related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}

.related-thumb:nth-child(1) { background-image: url('images/news-tech.jpg'); }
.related-thumb:nth-child(2) { background-image: url('images/news-business.jpg'); }
.related-thumb:nth-child(3) { background-image: url('images/news-city.jpg'); }
.related-thumb:nth-child(4) { background-image: url('images/green-environment.jpg'); }

.related-content {
    flex: 1;
}

.related-title {
    font-size: 14px;
    font-weight: 600;
    color: #0A1F3C;
    line-height: 1.4;
    margin-bottom: 5px;
}

.related-date {
    font-size: 12px;
    color: #999;
}

/* Popular Tags */
.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.cloud-tag {
    background-color: #F5F5F5;
    color: #666;
    padding: 6px 14px;
    border-radius: 15px;
    font-size: 13px;
    transition: all 0.3s;
}

.cloud-tag:hover {
    background-color: #0066CC;
    color: white;
}

.cloud-tag-blue {
    background-color: #E3F2FD;
    color: #0066CC;
}

/* Newsletter */
.newsletter-box {
    background: linear-gradient(135deg, #0A1F3C, #1a3a6c);
    border-radius: 12px;
    padding: 25px;
}

.newsletter-box .sidebar-title {
    color: white;
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.newsletter-text {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.newsletter-input {
    width: 100%;
    padding: 12px 15px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 12px;
}

.newsletter-btn {
    width: 100%;
    background-color: #FF6B00;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.newsletter-btn:hover {
    background-color: #e05c00;
}

/* Footer */
.footer {
    background-color: #0A1F3C;
    padding: 60px 20px 30px;
    color: white;
}

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

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 2fr 1.5fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
    font-size: 24px;
    margin-bottom: 15px;
    letter-spacing: 3px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.footer-column h4 {
    font-size: 14px;
    margin-bottom: 15px;
    color: #FF6B00;
}

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

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

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    transition: color 0.3s;
}

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

.footer-contact h4 {
    font-size: 14px;
    margin-bottom: 15px;
    color: #FF6B00;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    margin-bottom: 8px;
}

.subscribe-form {
    margin-top: 20px;
}

.subscribe-form input {
    width: 100%;
    padding: 10px 15px;
    border: none;
    border-radius: 6px;
    margin-bottom: 10px;
    font-size: 14px;
}

.subscribe-form button {
    width: 100%;
    background-color: #FF6B00;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.subscribe-form button:hover {
    background-color: #e05c00;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: white;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation Overlay */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0A1F3C 0%, #1a3a6c 100%);
    z-index: 999;
    padding-top: 80px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.mobile-nav.active {
    display: flex;
    flex-direction: column;
    opacity: 1;
    visibility: visible;
}

.mobile-nav a {
    color: white;
    font-size: 18px;
    padding: 15px 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: background 0.3s;
}

.mobile-nav a:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Responsive */
@media (max-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .sidebar-card {
        flex: 1;
        min-width: 280px;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .article-title {
        font-size: 28px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .navbar {
        padding: 0 20px;
    }

    .navbar .nav-links {
        display: none;
    }

    .navbar .nav-right {
        display: flex;
        align-items: center;
        gap: 15px;
    }

    /* Breadcrumb Mobile */
    .breadcrumb-bar {
        padding: 12px 15px;
    }

    .breadcrumb-container {
        font-size: 12px;
        overflow-x: auto;
        white-space: nowrap;
    }

    /* Content Wrapper Mobile */
    .content-wrapper {
        grid-template-columns: 1fr !important;
        padding: 20px 15px;
    }

    .article-content {
        padding: 20px;
    }

    .article-title {
        font-size: 22px !important;
    }

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

    .featured-image {
        height: 200px;
        margin-bottom: 20px;
    }

    .article-body {
        font-size: 14px;
    }

    .article-body p {
        margin-bottom: 15px;
    }

    .quote-box {
        padding: 15px 20px;
        margin: 20px 0;
    }

    .quote-text {
        font-size: 15px;
    }

    /* Stats Grid Mobile */
    .stats-grid {
        grid-template-columns: 1fr !important;
        gap: 15px;
    }

    .stat-card {
        padding: 20px;
    }

    .stat-number {
        font-size: 28px;
    }

    .stat-label {
        font-size: 13px;
    }

    /* Section Titles Mobile */
    .section-title {
        font-size: 18px;
        margin: 25px 0 15px;
    }

    .highlights-list li {
        font-size: 13px;
        padding: 10px 0 10px 25px;
    }

    .highlights-list li::before {
        width: 10px;
        height: 10px;
    }

    /* Tags Mobile */
    .tags-container {
        gap: 8px;
    }

    .tag {
        padding: 5px 12px;
        font-size: 12px;
    }

    /* Share Section Mobile */
    .share-section {
        flex-wrap: wrap;
    }

    /* Sidebar Mobile */
    .sidebar {
        gap: 20px;
    }

    .sidebar-card {
        padding: 20px;
    }

    .sidebar-title {
        font-size: 16px;
    }

    .related-thumb {
        width: 60px;
        height: 50px;
    }

    .related-title {
        font-size: 13px;
    }

    .tags-cloud {
        gap: 8px;
    }

    .cloud-tag {
        padding: 5px 10px;
        font-size: 12px;
    }

    .newsletter-text {
        font-size: 13px;
    }

    /* Footer Mobile */
    .footer {
        padding: 40px 15px 20px;
    }

    .footer-main {
        grid-template-columns: 1fr !important;
        gap: 30px;
    }

    .footer-links {
        grid-template-columns: 1fr !important;
        gap: 20px;
    }

    .footer-brand h3 {
        font-size: 20px;
    }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
    .article-title {
        font-size: 18px !important;
    }

    .article-date, .article-read-time {
        font-size: 12px;
    }

    .stat-number {
        font-size: 24px;
    }

    .section-title {
        font-size: 16px;
    }

    .quote-text {
        font-size: 14px;
    }
}