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

        :root {
            --primary-1: #838191;
            --primary-2: #507c94;
            --primary-3: #090526;
            --accent-1: #152e5f;
            --accent-2: #6e98b1;
            --auxiliary: #463852;
            --text-light: #ffffff;
            --text-dark: #090526;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'Yu Gothic', sans-serif;
            background: linear-gradient(135deg, var(--primary-3) 0%, var(--accent-1) 100%);
            color: var(--text-light);
            line-height: 1.6;
            min-height: 100vh;
        }

        .hidden {
            display: none !important;
        }

        header {
            background: rgba(9, 5, 38, 0.95);
            backdrop-filter: blur(10px);
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(110, 152, 177, 0.3);
        }

        nav {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--accent-2);
            text-shadow: 0 0 10px rgba(110, 152, 177, 0.5);
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
            align-items: center;
        }

        .nav-links a {
            color: var(--text-light);
            text-decoration: none;
            transition: all 0.3s ease;
            position: relative;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-2);
            transition: width 0.3s ease;
        }

        .nav-links a:hover {
            color: var(--accent-2);
        }

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

        .lang-switch {
            display: flex;
            gap: 0.5rem;
            padding-left: 1rem;
            border-left: 1px solid rgba(110, 152, 177, 0.3);
        }

        .lang-btn {
            padding: 0.3rem 0.8rem;
            background: rgba(110, 152, 177, 0.2);
            border: none;
            border-radius: 5px;
            font-size: 0.9rem;
            color: var(--text-light);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .lang-btn:hover {
            background: rgba(110, 152, 177, 0.4);
        }

        .lang-btn.active {
            background: var(--accent-2);
        }

        .hero {
            max-width: 1400px;
            margin: 3rem auto;
            padding: 0 2rem;
            text-align: center;
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 1rem;
            text-shadow: 0 0 20px rgba(110, 152, 177, 0.5);
            animation: glow 2s ease-in-out infinite alternate;
        }

        @keyframes glow {
            from { text-shadow: 0 0 10px rgba(110, 152, 177, 0.5); }
            to { text-shadow: 0 0 20px rgba(110, 152, 177, 0.8), 0 0 30px rgba(110, 152, 177, 0.5); }
        }

        .hero .subtitle {
            font-size: 1.3rem;
            color: var(--accent-2);
            margin-bottom: 2rem;
        }

        .cover-section {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
        }

        .cover-image {
            width: 100%;
            border-radius: 15px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
            transition: transform 0.3s ease;
        }

        .cover-image:hover {
            transform: scale(1.02);
        }

        .info-section {
            max-width: 1200px;
            margin: 3rem auto;
            padding: 0 2rem;
        }

        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .info-card {
            background: rgba(70, 56, 82, 0.4);
            backdrop-filter: blur(10px);
            padding: 2rem;
            border-radius: 15px;
            border: 1px solid rgba(110, 152, 177, 0.3);
            transition: all 0.3s ease;
        }

        .info-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(110, 152, 177, 0.3);
            border-color: var(--accent-2);
        }

        .info-card h3 {
            color: var(--accent-2);
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        .info-card ul {
            list-style-position: inside;
            color: var(--text-light);
        }

        .story-section {
            max-width: 1200px;
            margin: 3rem auto;
            padding: 2rem;
            background: rgba(70, 56, 82, 0.3);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            border: 1px solid rgba(110, 152, 177, 0.3);
        }

        .story-section h2 {
            color: var(--accent-2);
            margin-bottom: 1.5rem;
            font-size: 2rem;
        }

        .story-section p {
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 1rem;
        }

        .gallery-section {
            max-width: 1400px;
            margin: 3rem auto;
            padding: 0 2rem;
        }

        .gallery-section h2 {
            text-align: center;
            color: var(--accent-2);
            margin-bottom: 2rem;
            font-size: 2rem;
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
        }

        .gallery-item {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .gallery-item:hover {
            transform: scale(1.05);
        }

        .gallery-item img {
            width: 100%;
            height: auto;
            display: block;
        }

                
        .articles-section {
            max-width: 1200px;
            margin: 5rem auto;
            padding: 0 2rem;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            color: var(--accent-2);
            margin-bottom: 3rem;
            text-shadow: 0 0 20px rgba(110, 152, 177, 0.5);
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .article-card {
            background: rgba(70, 56, 82, 0.4);
            backdrop-filter: blur(10px);
            padding: 2rem;
            border-radius: 15px;
            border: 1px solid rgba(110, 152, 177, 0.3);
            transition: all 0.3s ease;
            text-decoration: none;
            color: var(--text-light);
            display: block;
        }

        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(110, 152, 177, 0.3);
            border-color: var(--accent-2);
        }

        .article-date {
            color: var(--primary-1);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }

        .article-card h3 {
            color: var(--accent-2);
            margin-bottom: 1rem;
            font-size: 1.3rem;
            line-height: 1.4;
        }

        .article-excerpt {
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .article-tag {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            background: rgba(110, 152, 177, 0.3);
            border-radius: 15px;
            font-size: 0.85rem;
            color: var(--accent-2);
        }

        .articles-section {
            max-width: 1200px;
            margin: 5rem auto;
            padding: 0 2rem;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            color: var(--accent-2);
            margin-bottom: 3rem;
            text-shadow: 0 0 20px rgba(110, 152, 177, 0.5);
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .article-card {
            background: rgba(70, 56, 82, 0.4);
            backdrop-filter: blur(10px);
            padding: 2rem;
            border-radius: 15px;
            border: 1px solid rgba(110, 152, 177, 0.3);
            transition: all 0.3s ease;
            text-decoration: none;
            color: var(--text-light);
            display: block;
        }

        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(110, 152, 177, 0.3);
            border-color: var(--accent-2);
        }

        .article-date {
            color: var(--primary-1);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }

        .article-card h3 {
            color: var(--accent-2);
            margin-bottom: 1rem;
            font-size: 1.3rem;
            line-height: 1.4;
        }

        .article-excerpt {
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .article-tag {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            background: rgba(110, 152, 177, 0.3);
            border-radius: 15px;
            font-size: 0.85rem;
            color: var(--accent-2);
        }

        .logo-img {
            width: 48px;
            height: 48px;
            margin-right: 0.5rem;
            vertical-align: middle;
            image-rendering: -webkit-optimize-contrast;
            image-rendering: crisp-edges;
        }

        .download-section {
            max-width: 800px;
            margin: 3rem auto;
            padding: 3rem;
            background: linear-gradient(135deg, var(--accent-1) 0%, var(--auxiliary) 100%);
            border-radius: 15px;
            text-align: center;
            box-shadow: 0 10px 40px rgba(110, 152, 177, 0.3);
        }

        .download-section h2 {
            color: var(--text-light);
            margin-bottom: 1.5rem;
            font-size: 2rem;
        }

        .download-btn {
            display: inline-block;
            padding: 1rem 3rem;
            background: var(--accent-2);
            color: var(--text-light);
            text-decoration: none;
            border-radius: 50px;
            font-size: 1.2rem;
            font-weight: bold;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }

        .download-btn:hover {
            background: #507c94;
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(110, 152, 177, 0.5);
        }

        footer {
            background: rgba(9, 5, 38, 0.95);
            margin-top: 5rem;
            padding: 3rem 2rem 1rem;
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
        }

        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-column h4 {
            color: var(--accent-2);
            margin-bottom: 1rem;
        }

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

        .footer-column a {
            color: var(--text-light);
            text-decoration: none;
            display: block;
            padding: 0.3rem 0;
            transition: color 0.3s ease;
        }

        .footer-column a:hover {
            color: var(--accent-2);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(110, 152, 177, 0.3);
            color: var(--primary-1);
        }

        #backToTop {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--accent-2);
            color: var(--text-light);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            border: none;
            cursor: pointer;
            display: none;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            transition: all 0.3s ease;
            z-index: 999;
        }

        #backToTop:hover {
            background: #507c94;
            transform: translateY(-5px);
        }

        #backToTop.show {
            display: flex;
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2rem;
            }

            .hero .subtitle {
                font-size: 1rem;
            }

            .nav-links {
                gap: 1rem;
                font-size: 0.9rem;
            }

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

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