* {
            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 15px;
        }
        a {
            text-decoration: none;
            color: #0066cc;
            transition: color 0.3s;
        }
        a:hover {
            color: #004d99;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        header {
            background: linear-gradient(135deg, #1a73e8, #0d47a1);
            color: white;
            padding: 1rem 0;
            border-radius: 0 0 10px 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        nav a:hover {
            background-color: rgba(255,255,255,0.2);
        }
        .breadcrumb {
            padding: 10px 20px;
            background-color: rgba(255,255,255,0.1);
            margin-top: 10px;
            border-radius: 5px;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #cce7ff;
        }
        .breadcrumb a:hover {
            color: white;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            margin: 2rem 0;
        }
        article {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        h1 {
            font-size: 2.5rem;
            color: #1a73e8;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: #0d47a1;
            margin-top: 2rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e0e0e0;
        }
        h3 {
            font-size: 1.5rem;
            color: #1a73e8;
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #555;
            margin-top: 1rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background-color: #e3f2fd;
            padding: 1rem;
            border-left: 4px solid #1a73e8;
            margin: 1.5rem 0;
            border-radius: 0 5px 5px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .featured-image {
            text-align: center;
            margin: 2rem 0;
        }
        .featured-image img {
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        }
        .update-time {
            font-style: italic;
            color: #666;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed #ccc;
        }
        .form-section {
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .form-section h3 {
            margin-top: 0;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.75rem;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-family: inherit;
            font-size: 1rem;
            width: 100%;
        }
        button {
            background: #1a73e8;
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
            align-self: flex-start;
        }
        button:hover {
            background: #0d47a1;
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            margin-bottom: 1rem;
        }
        .rating input {
            width: auto;
        }
        footer {
            background: #1a73e8;
            color: white;
            padding: 2rem;
            border-radius: 10px 10px 0 0;
            margin-top: 3rem;
            text-align: center;
        }
        friend-link {
            display: block;
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        friend-link a {
            color: #cce7ff;
            font-weight: bold;
        }
        friend-link a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.3);
            font-size: 0.9rem;
            color: #cce7ff;
        }
        @media (max-width: 768px) {
            main {
                grid-template-columns: 1fr;
            }
            .header-top {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 0;
                width: 100%;
                display: none;
                margin-top: 1rem;
            }
            nav.active ul {
                display: flex;
            }
            nav li {
                width: 100%;
                text-align: center;
            }
            nav a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.2);
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
        }