* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0f1a1f;
            color: #e0e0e0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #4da8da;
            text-decoration: none;
            transition: color 0.3s ease, text-shadow 0.3s ease;
        }
        a:hover {
            color: #7bc6f0;
            text-shadow: 0 0 8px rgba(77, 168, 218, 0.5);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-2 { margin-top: 2rem; }
        .p-2 { padding: 2rem; }
        .highlight {
            background: linear-gradient(90deg, transparent, rgba(77, 168, 218, 0.1), transparent);
            padding: 0.2rem 0.5rem;
            border-left: 3px solid #4da8da;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, #2a5a7c, #1e3a52);
            color: white;
            padding: 12px 28px;
            border-radius: 6px;
            border: 1px solid #4da8da;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn:hover {
            background: linear-gradient(to right, #35719e, #2a5a7c);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }
        .site-header {
            background: linear-gradient(180deg, #0c1419 0%, #0f1a1f 100%);
            border-bottom: 1px solid #1c2b35;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(45deg, #4da8da, #7bc6f0);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
            letter-spacing: 1px;
        }
        .my-logo:hover {
            animation: logo-pulse 0.5s ease;
        }
        @keyframes logo-pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            font-weight: 600;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: #4da8da;
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #e0e0e0;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #0c1419;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            border-top: 1px solid #1c2b35;
            box-shadow: 0 10px 20px rgba(0,0,0,0.5);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 0.8rem 0;
            border-bottom: 1px solid #1c2b35;
            font-weight: 600;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #121e24;
            font-size: 0.9rem;
            border-bottom: 1px solid #1c2b35;
        }
        .breadcrumb a {
            color: #8ab4d6;
        }
        .breadcrumb .separator {
            margin: 0 10px;
            color: #4da8da;
        }
        .hero {
            background: radial-gradient(ellipse at center, #1a2b35 0%, #0f1a1f 70%);
            padding: 4rem 0;
            text-align: center;
            border-bottom: 1px solid #253843;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1rem;
            background: linear-gradient(to right, #7bc6f0, #4da8da);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }
        .hero-subtitle {
            font-size: 1.3rem;
            color: #b0c4d4;
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 3rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: rgba(18, 30, 36, 0.7);
            border-radius: 12px;
            padding: 2.5rem;
            border: 1px solid #253843;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        .article-content h2 {
            font-size: 2.2rem;
            color: #4da8da;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #2a5a7c;
        }
        .article-content h3 {
            font-size: 1.7rem;
            color: #7bc6f0;
            margin: 2rem 0 1rem;
        }
        .article-content h4 {
            font-size: 1.3rem;
            color: #9ac8e4;
            margin: 1.5rem 0 0.8rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-content ul, .article-content ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.7rem;
        }
        .featured-image {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            border: 2px solid #2a5a7c;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
        }
        .update-time {
            font-style: italic;
            color: #8ab4d6;
            background-color: rgba(42, 90, 124, 0.2);
            padding: 0.5rem 1rem;
            border-radius: 6px;
            display: inline-block;
            margin-bottom: 2rem;
        }
        .sidebar {
            background-color: rgba(18, 30, 36, 0.7);
            border-radius: 12px;
            padding: 2rem;
            border: 1px solid #253843;
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-widget h3 {
            color: #4da8da;
            margin-bottom: 1.2rem;
            font-size: 1.5rem;
            border-bottom: 1px solid #2a5a7c;
            padding-bottom: 0.5rem;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 15px;
            background-color: #0c1419;
            border: 1px solid #2a5a7c;
            border-right: none;
            border-radius: 6px 0 0 6px;
            color: #e0e0e0;
        }
        .search-form button {
            background: linear-gradient(to bottom, #2a5a7c, #1e3a52);
            border: 1px solid #2a5a7c;
            border-left: none;
            border-radius: 0 6px 6px 0;
            color: white;
            padding: 0 20px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: linear-gradient(to bottom, #35719e, #2a5a7c);
        }
        .rating-widget .stars {
            display: flex;
            gap: 5px;
            margin-bottom: 1rem;
        }
        .rating-widget .stars i {
            color: #555;
            cursor: pointer;
            font-size: 1.8rem;
            transition: color 0.2s;
        }
        .rating-widget .stars i:hover,
        .rating-widget .stars i.active {
            color: #ffcc00;
        }
        .comment-form textarea {
            width: 100%;
            height: 120px;
            padding: 15px;
            background-color: #0c1419;
            border: 1px solid #2a5a7c;
            border-radius: 6px;
            color: #e0e0e0;
            resize: vertical;
            margin-bottom: 1rem;
        }
        .site-footer {
            background: linear-gradient(180deg, #0c1419 0%, #080f13 100%);
            border-top: 1px solid #1c2b35;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-around;
            margin-bottom: 2rem;
        }
        .footer-column {
            flex: 1;
            min-width: 250px;
            margin-bottom: 2rem;
            padding: 0 1rem;
        }
        .footer-column h4 {
            color: #4da8da;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-column ul li {
            margin-bottom: 0.8rem;
        }
        friend-link {
            display: block;
            background-color: rgba(42, 90, 124, 0.2);
            padding: 0.8rem 1rem;
            margin-bottom: 0.8rem;
            border-radius: 6px;
            border-left: 4px solid #4da8da;
            transition: all 0.3s;
        }
        friend-link:hover {
            background-color: rgba(42, 90, 124, 0.4);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #1c2b35;
            color: #8ab4d6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero-subtitle {
                font-size: 1.1rem;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-content {
                padding: 1.5rem;
            }
            .article-content h2 {
                font-size: 1.9rem;
            }
            .article-content h3 {
                font-size: 1.5rem;
            }
            .sidebar {
                position: static;
            }
        }