* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a237e, #4a148c);
            color: white;
            padding: 20px 0;
            border-bottom: 5px solid #ff9800;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: bold;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
        }
        .my-logo i {
            margin-right: 10px;
            color: #ff9800;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 10px 15px;
            border-radius: 5px;
            transition: background 0.3s;
        }
        .nav-links a:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #666;
        }
        .breadcrumb a {
            color: #1a237e;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 20px 0;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 20px;
            border-bottom: 3px solid #ff9800;
            padding-bottom: 10px;
        }
        h2 {
            font-size: 2rem;
            color: #4a148c;
            margin-top: 30px;
            margin-bottom: 15px;
        }
        h3 {
            font-size: 1.6rem;
            color: #6a1b9a;
            margin-top: 25px;
            margin-bottom: 10px;
        }
        h4 {
            font-size: 1.3rem;
            color: #8e24aa;
            margin-top: 20px;
            margin-bottom: 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            line-height: 1.8;
        }
        .highlight {
            background: #fff3e0;
            padding: 15px;
            border-left: 5px solid #ff9800;
            margin: 20px 0;
            border-radius: 5px;
        }
        emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        a {
            color: #1a73e8;
            text-decoration: none;
            font-weight: 500;
        }
        a:hover {
            text-decoration: underline;
            color: #0d47a1;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 20px auto;
            display: block;
            border: 3px solid #e0e0e0;
        }
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .feature-card {
            background: #f5f5f5;
            padding: 20px;
            border-radius: 10px;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .interactive-section {
            background: #e8f4fd;
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            max-width: 600px;
            margin: 0 auto;
        }
        input, textarea, select {
            padding: 12px;
            border: 2px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #1a73e8;
            outline: none;
        }
        button {
            padding: 12px 20px;
            background: linear-gradient(135deg, #1a237e, #4a148c);
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        button:hover {
            background: linear-gradient(135deg, #0d1b6b, #38006b);
            transform: scale(1.02);
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.3s;
        }
        .star:hover,
        .star.active {
            color: #ff9800;
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: #666;
            margin-top: 20px;
            padding-top: 10px;
            border-top: 1px dashed #ccc;
        }
        footer {
            background: #1a237e;
            color: white;
            padding: 30px 20px;
            border-top: 5px solid #ff9800;
            text-align: center;
            margin-top: 40px;
        }
        friend-link {
            display: block;
            margin: 15px 0;
        }
        friend-link a {
            color: #ffcc80;
            font-weight: bold;
        }
        .copyright {
            margin-top: 20px;
            font-size: 0.9rem;
            color: #b0bec5;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            nav {
                width: 100%;
                justify-content: space-between;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #2c387e;
                padding: 20px;
                border-radius: 10px;
                margin-top: 10px;
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .features {
                grid-template-columns: 1fr;
            }
        }