* {
            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: #f9f9f9;
            padding: 0;
            margin: 0;
        }
        a {
            text-decoration: none;
            color: #0077cc;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0055aa;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .header {
            background: linear-gradient(135deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
            color: white;
            padding: 1rem 2rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: bold;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #333;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            z-index: 1000;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 1rem 2rem;
            border-bottom: 1px solid #555;
        }
        .nav-mobile a:hover {
            background-color: #444;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #0077cc;
        }
        .container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        .main-content {
            background-color: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }
        h1 {
            color: #ff6b6b;
            font-size: 2.8rem;
            margin-bottom: 1rem;
            border-bottom: 3px solid #4ecdc4;
            padding-bottom: 0.5rem;
        }
        h2 {
            color: #45b7d1;
            font-size: 2rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        h3 {
            color: #96ceb4;
            font-size: 1.6rem;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            color: #333;
            font-size: 1.3rem;
            margin-top: 1.2rem;
            margin-bottom: 0.6rem;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1rem;
            border-left: 5px solid #ff6b6b;
            margin: 1.5rem 0;
            font-style: italic;
        }
        .link-list {
            list-style: none;
            padding: 1rem;
            background-color: #f1f8ff;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .link-list li {
            margin-bottom: 0.5rem;
        }
        .link-list a {
            color: #0055aa;
            font-weight: 600;
        }
        .image-container {
            text-align: center;
            margin: 2rem 0;
        }
        .image-container img {
            border-radius: 10px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .update-time {
            font-size: 0.9rem;
            color: #777;
            text-align: right;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        .functional-section {
            background-color: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
        }
        .functional-section h2 {
            color: #333;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 600px;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #45b7d1;
            outline: none;
        }
        button {
            padding: 0.8rem 1.5rem;
            background-color: #ff6b6b;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s ease;
        }
        button:hover {
            background-color: #e05555;
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            align-items: center;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.5rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .rating label:hover,
        .rating input:checked ~ label {
            color: #ffcc00;
        }
        .footer {
            background-color: #333;
            color: white;
            padding: 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: #4ecdc4;
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.5rem;
            color: #96ceb4;
        }
        friend-link:hover {
            color: #ff6b6b;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #555;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .container {
                padding: 0 1rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            .main-content, .functional-section {
                padding: 1.5rem;
            }
        }