* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ed 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #2a5bd7; text-decoration: none; transition: color 0.3s, transform 0.2s; }
        a:hover { color: #1a3fa0; transform: translateY(-2px); }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            padding: 1.2rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(45deg, #ffcc00, #ff9800);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .my-logo:hover { transform: scale(1.05); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e3f2fd;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 6px;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #ffcc00;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #e8eaf6;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #5c6bc0; }
        .breadcrumb a:hover { text-decoration: underline; }
        main { flex: 1; padding: 2.5rem 0; }
        article {
            background: white;
            border-radius: 16px;
            padding: 3rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            margin-bottom: 2.5rem;
        }
        h1 {
            font-size: 3.2rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 8px solid #ff9800;
            padding-left: 1.5rem;
        }
        h2 {
            font-size: 2.3rem;
            color: #283593;
            margin: 2.8rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #c5cae9;
        }
        h3 {
            font-size: 1.8rem;
            color: #3949ab;
            margin: 2.2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #5c6bc0;
            margin: 1.8rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background: #fff9c4;
            padding: 1.8rem;
            border-left: 5px solid #ffb300;
            margin: 2rem 0;
            border-radius: 0 12px 12px 0;
        }
        .emoji { font-size: 1.2em; margin-right: 8px; }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .link-card {
            background: #f3f4ff;
            padding: 1.5rem;
            border-radius: 12px;
            border: 2px solid #d1d9ff;
            transition: all 0.3s;
        }
        .link-card:hover {
            background: #e8eaff;
            border-color: #7986cb;
            transform: translateY(-5px);
        }
        .img-container {
            text-align: center;
            margin: 3rem 0;
        }
        .img-container img {
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            margin: 0 auto;
            border: 5px solid white;
        }
        .caption {
            font-style: italic;
            color: #666;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .interactive-module {
            background: linear-gradient(145deg, #e3f2fd, #f3e5f5);
            padding: 2.5rem;
            border-radius: 16px;
            margin: 3rem 0;
            border: 1px solid #bbdefb;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 1rem;
            color: #1a237e;
            margin-bottom: 1.8rem;
        }
        .module-title i { font-size: 2rem; }
        form {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            margin-top: 1.5rem;
        }
        input, textarea, select {
            padding: 0.9rem 1.2rem;
            border: 2px solid #c5cae9;
            border-radius: 10px;
            font-size: 1rem;
            flex: 1;
            min-width: 250px;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #5c6bc0;
            box-shadow: 0 0 0 3px rgba(92, 107, 192, 0.2);
        }
        button, .btn {
            background: linear-gradient(45deg, #1a237e, #3949ab);
            color: white;
            border: none;
            padding: 0.9rem 2.2rem;
            border-radius: 10px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
        }
        button:hover, .btn:hover {
            background: linear-gradient(45deg, #0d1538, #283593);
            transform: scale(1.05);
            box-shadow: 0 6px 12px rgba(26, 35, 126, 0.3);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .rating i {
            color: #ffb300;
            font-size: 1.8rem;
            cursor: pointer;
            transition: transform 0.2s;
        }
        .rating i:hover { transform: scale(1.2); }
        .site-footer {
            background: #1a237e;
            color: #e8eaf6;
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        friend-link {
            display: inline-block;
            background: rgba(255, 255, 255, 0.1);
            padding: 0.7rem 1.5rem;
            border-radius: 8px;
            border: 1px solid #5c6bc0;
            transition: all 0.3s;
        }
        friend-link a { color: #c5cae9; }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #9fa8da;
        }
        @media (max-width: 1024px) {
            h1 { font-size: 2.7rem; }
            h2 { font-size: 2rem; }
            .main-nav ul { gap: 1.2rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #283593;
                padding: 1.5rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            .main-nav.active ul { display: flex; }
            .header-container { flex-wrap: wrap; }
            article { padding: 2rem; }
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.8rem; }
            .link-list { grid-template-columns: 1fr; }
            form { flex-direction: column; }
            input, textarea, select { min-width: 100%; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            h1 { font-size: 2rem; }
            .my-logo { font-size: 1.8rem; }
            .interactive-module { padding: 1.8rem; }
        }