* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            text-decoration: none;
            color: #1a73e8;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0d47a1;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, #ff6b6b, #4ecdc4);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .logo a:hover {
            color: #ffeb3b;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        #nav-toggle {
            display: none;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: background 0.3s ease;
        }
        nav a:hover {
            background: rgba(255,255,255,0.2);
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #e3f2fd;
            margin-top: 0.5rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #666;
        }
        main {
            flex: 1;
            padding: 2rem 0;
            background: white;
            border-radius: 10px;
            margin: 1rem auto;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
            max-width: 1100px;
            width: 95%;
        }
        article {
            padding: 0 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #d81b60;
            margin-bottom: 1.5rem;
            text-align: center;
            border-bottom: 3px solid #4ecdc4;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #1a237e;
            margin: 2rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 5px solid #ff9800;
        }
        h3 {
            font-size: 1.5rem;
            color: #388e3c;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
            line-height: 1.8;
            font-size: 1.1rem;
        }
        .highlight {
            background: #fff9c4;
            padding: 1rem;
            border-left: 4px solid #ffd600;
            margin: 1.5rem 0;
            border-radius: 0 5px 5px 0;
        }
        .emoji {
            font-size: 1.2rem;
            margin-right: 0.3rem;
        }
        .functional-section {
            background: #f1f8e9;
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }
        .functional-section h2 {
            color: #5d4037;
            border-left: 5px solid #8bc34a;
        }
        form {
            display: grid;
            gap: 1rem;
            max-width: 600px;
            margin: 1rem auto;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 2px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #4caf50;
            outline: none;
        }
        button {
            padding: 0.8rem 1.5rem;
            background: linear-gradient(90deg, #00c853, #64dd17);
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: bold;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            align-items: center;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: #ffd700;
        }
        .article-image {
            margin: 2rem auto;
            text-align: center;
            max-width: 800px;
        }
        .article-image img {
            border-radius: 10px;
            box-shadow: 0 8px 16px rgba(0,0,0,0.2);
            transition: transform 0.5s ease;
        }
        .article-image img:hover {
            transform: scale(1.02);
        }
        .caption {
            margin-top: 0.5rem;
            font-style: italic;
            color: #666;
        }
        .internal-links {
            background: #263238;
            color: white;
            padding: 2rem 0;
        }
        .internal-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: #37474f;
            padding: 1rem;
            border-radius: 5px;
            transition: background 0.3s ease;
        }
        .web-link:hover {
            background: #455a64;
        }
        .web-link a {
            color: #bbdefb;
            display: block;
        }
        footer {
            background: #1a237e;
            color: white;
            text-align: center;
            padding: 1.5rem 0;
            margin-top: auto;
        }
        footer p {
            margin-bottom: 0;
            text-align: center;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(255,107,107,0.95);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                border-radius: 0 0 10px 10px;
                box-shadow: 0 8px 16px rgba(0,0,0,0.2);
            }
            #nav-toggle:checked ~ nav ul {
                display: flex;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            article {
                padding: 0 1rem;
            }
            .functional-section {
                padding: 1.5rem;
            }
            .internal-links .container {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .internal-links .container {
                grid-template-columns: 1fr;
            }
            .logo a {
                font-size: 1.5rem;
            }
        }