* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #1a73e8;
            text-decoration: none;
            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: #ffffff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #1a73e8;
            text-decoration: none;
            letter-spacing: -1px;
        }
        .my-logo span:nth-child(1) { color: #1a73e8; }
        .my-logo span:nth-child(2) { color: #34a853; }
        .my-logo span:nth-child(3) { color: #fbbc05; }
        .my-logo span:nth-child(4) { color: #ea4335; }
        .my-logo span:nth-child(5) { color: #1a73e8; }
        .my-logo span:nth-child(6) { color: #34a853; }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 30px;
        }
        nav ul li a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        nav ul li a:hover, nav ul li a.active {
            border-bottom-color: #1a73e8;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #555;
        }
        .breadcrumb {
            background: #edf2f7;
            padding: 12px 0;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb a {
            color: #5f6368;
        }
        .breadcrumb a:hover {
            color: #1a73e8;
        }
        .breadcrumb span {
            margin: 0 8px;
            color: #aaa;
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 2.8rem;
            color: #202124;
            margin-bottom: 25px;
            line-height: 1.2;
            border-bottom: 3px solid #fbbc05;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            color: #1a73e8;
            margin: 40px 0 20px;
            padding-top: 10px;
        }
        h3 {
            font-size: 1.6rem;
            color: #34a853;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #ea4335;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 22px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
            border-left: 5px solid #1a73e8;
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 10px 10px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .keyword {
            background-color: #fff3cd;
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        .img-container {
            text-align: center;
            margin: 35px 0;
        }
        .img-container img {
            border-radius: 10px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            max-width: 800px;
            margin: 0 auto;
        }
        .caption {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 40px 0;
            padding: 25px;
            background: #f8f9fa;
            border-radius: 10px;
        }
        .related-links a {
            display: flex;
            align-items: center;
            padding: 12px 15px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .related-links a:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .related-links i {
            margin-right: 10px;
            color: #34a853;
        }
        .interactive-module {
            background: #f1f8ff;
            border-radius: 12px;
            padding: 30px;
            margin: 50px 0;
            border: 1px solid #c2e0ff;
        }
        .module-title {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            margin-bottom: 25px;
            color: #0d47a1;
        }
        .module-title i {
            margin-right: 15px;
            font-size: 1.8rem;
        }
        form {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 20px;
        }
        input, textarea, select {
            padding: 14px 18px;
            border: 1px solid #dadce0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
            flex-grow: 1;
            min-width: 200px;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #1a73e8;
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
        }
        button {
            background: #1a73e8;
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        button:hover {
            background: #0d62d9;
            transform: scale(1.03);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin: 20px 0;
        }
        .rating-stars .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #fbbc05;
        }
        .comments-section {
            margin-top: 40px;
        }
        .comment {
            background: white;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 20px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: #666;
        }
        footer {
            background: #202124;
            color: #e8eaed;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: #fbbc05;
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        .footer-links a {
            color: #bdc1c6;
            display: block;
            margin-bottom: 12px;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: white;
        }
        friend-link {
            display: block;
            background: #2d2e31;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 15px;
            text-align: center;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: #3c4043;
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #3c4043;
            color: #9aa0a6;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 30px; }
        }
        @media (max-width: 768px) {
            .header-container { padding: 15px 20px; }
            nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                padding: 20px;
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                margin: 10px 0;
            }
            .hamburger {
                display: block;
            }
            .breadcrumb {
                padding-left: 20px;
                padding-right: 20px;
            }
            .related-links {
                grid-template-columns: 1fr;
            }
            form {
                flex-direction: column;
            }
            input, textarea, select {
                min-width: 100%;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            article { padding: 20px; }
            .interactive-module { padding: 20px; }
        }