* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #0c2461 0%, #1e3799 50%, #4a69bd 100%);
            color: #f5f5f5;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #74b9ff;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #00cec9;
            transform: translateY(-2px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 10px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 40px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .site-header {
            background: rgba(12, 36, 97, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: #00cec9;
            text-shadow: 0 0 10px rgba(0, 206, 201, 0.5);
            letter-spacing: 1px;
        }
        .logo a:hover {
            color: #74b9ff;
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        .nav-desktop a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 15px;
            border-radius: 5px;
        }
        .nav-desktop a:hover {
            background: rgba(116, 185, 255, 0.1);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #f5f5f5;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #0c2461;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 20px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.3);
            border-top: 2px solid #00cec9;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 15px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-size: 1.2rem;
        }
        .breadcrumb {
            padding: 15px 0;
            background: rgba(255, 255, 255, 0.05);
            margin-bottom: 20px;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin-left: 10px;
            color: #74b9ff;
        }
        .hero {
            text-align: center;
            padding: 60px 0;
            background: radial-gradient(circle at center, rgba(30, 55, 153, 0.8) 0%, rgba(12, 36, 97, 0.9) 100%);
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            color: #00cec9;
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            color: #dfe6e9;
        }
        .article-content {
            background: rgba(255, 255, 255, 0.03);
            padding: 40px;
            border-radius: 15px;
            margin: 30px 0;
            box-shadow: inset 0 0 20px rgba(0,0,0,0.2);
        }
        .article-content h2 {
            color: #74b9ff;
            font-size: 2.5rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid #00cec9;
        }
        .article-content h3 {
            color: #00cec9;
            font-size: 1.8rem;
            margin: 30px 0 15px;
        }
        .article-content p {
            margin-bottom: 25px;
            font-size: 1.15rem;
            text-align: justify;
        }
        .article-content ul, .article-content ol {
            margin-left: 30px;
            margin-bottom: 25px;
        }
        .article-content li {
            margin-bottom: 10px;
        }
        .highlight {
            background: rgba(116, 185, 255, 0.15);
            border-left: 5px solid #00cec9;
            padding: 20px;
            margin: 30px 0;
            border-radius: 0 10px 10px 0;
        }
        .tier-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .tier-card {
            background: linear-gradient(145deg, #1e3799, #0c2461);
            padding: 25px;
            border-radius: 15px;
            border: 2px solid;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .tier-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
        }
        .tier-card.S {
            border-color: #ffd700;
        }
        .tier-card.A {
            border-color: #ff6b6b;
        }
        .tier-card h3 {
            font-size: 1.8rem;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interactive-module {
            background: rgba(30, 55, 153, 0.7);
            padding: 30px;
            border-radius: 15px;
            margin: 40px 0;
            text-align: center;
        }
        .module-title {
            font-size: 2rem;
            color: #00cec9;
            margin-bottom: 25px;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 600px;
            margin: 0 auto;
        }
        input, textarea, select {
            padding: 15px;
            border-radius: 8px;
            border: 2px solid #4a69bd;
            background: rgba(255,255,255,0.1);
            color: #f5f5f5;
            font-size: 1rem;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #00cec9;
            background: rgba(255,255,255,0.15);
        }
        button, .btn {
            background: linear-gradient(to right, #00cec9, #74b9ff);
            color: #0c2461;
            border: none;
            padding: 15px 30px;
            font-size: 1.1rem;
            font-weight: bold;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #74b9ff, #00cec9);
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(0, 206, 201, 0.4);
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 2rem;
            color: #ffd700;
            margin-bottom: 20px;
        }
        .star {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .star:hover {
            transform: scale(1.3);
        }
        .site-footer {
            background: #0c2461;
            margin-top: auto;
            padding: 50px 0 20px;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        friend-link {
            display: block;
            width: 100%;
            margin-bottom: 30px;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin-bottom: 30px;
        }
        .friend-links a {
            background: rgba(116, 185, 255, 0.1);
            padding: 10px 20px;
            border-radius: 5px;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #b2bec3;
            font-size: 0.9rem;
            width: 100%;
        }
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.8rem;
            }
            .article-content h2 {
                font-size: 2.2rem;
            }
            .tier-list {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            .article-content {
                padding: 25px;
            }
            .article-content h2 {
                font-size: 1.9rem;
            }
            .article-content h3 {
                font-size: 1.5rem;
            }
            .tier-list {
                grid-template-columns: 1fr;
            }
            .interactive-module {
                padding: 20px;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2rem;
            }
            .module-title {
                font-size: 1.6rem;
            }
            .friend-links {
                flex-direction: column;
                align-items: center;
            }
        }