* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background: linear-gradient(135deg, #1a1a2e, #16213e);
            color: #f0f0f0;
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #00b4d8;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #90e0ef;
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(0, 0, 0, 0.9);
            padding: 20px 0;
            border-bottom: 3px solid #00b4d8;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: bold;
            background: linear-gradient(90deg, #00b4d8, #0077b6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        .my-logo:hover {
            transform: scale(1.05);
            transition: transform 0.3s ease;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 30px;
        }
        .nav-links a {
            font-size: 1.1rem;
            padding: 10px 15px;
            border-radius: 5px;
        }
        .nav-links a:hover {
            background: rgba(0, 180, 216, 0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #00b4d8;
        }
        .breadcrumb {
            margin-top: 10px;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb a {
            color: #aaa;
        }
        .breadcrumb a:hover {
            color: #00b4d8;
        }
        main {
            flex: 1;
            padding: 40px 0;
        }
        article {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 3.5rem;
            color: #00b4d8;
            margin-bottom: 20px;
            text-align: center;
            text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.7);
        }
        h2 {
            font-size: 2.5rem;
            color: #90e0ef;
            margin: 40px 0 20px;
            border-left: 5px solid #0077b6;
            padding-left: 15px;
        }
        h3 {
            font-size: 2rem;
            color: #caf0f8;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.5rem;
            color: #e0f7fa;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background: rgba(0, 180, 216, 0.2);
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #00b4d8;
            margin: 20px 0;
        }
        .image-container {
            text-align: center;
            margin: 30px 0;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            border: 3px solid #0077b6;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
            transition: transform 0.3s ease;
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 15px;
            margin: 30px 0;
            list-style: none;
        }
        .link-list li {
            background: rgba(255, 255, 255, 0.1);
            padding: 15px;
            border-radius: 8px;
            transition: background 0.3s ease;
        }
        .link-list li:hover {
            background: rgba(0, 180, 216, 0.3);
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: #aaa;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px dashed #555;
        }
        .functional-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 40px 0;
        }
        .function-card {
            background: rgba(255, 255, 255, 0.08);
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .function-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 25px rgba(0, 180, 216, 0.3);
        }
        .function-card h3 {
            color: #00b4d8;
            margin-bottom: 15px;
        }
        .function-card form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .function-card input, .function-card textarea, .function-card select {
            padding: 12px;
            border: 1px solid #555;
            border-radius: 5px;
            background: rgba(255, 255, 255, 0.1);
            color: #f0f0f0;
            font-size: 1rem;
        }
        .function-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .function-card button {
            padding: 12px;
            background: linear-gradient(90deg, #0077b6, #00b4d8);
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s ease;
        }
        .function-card button:hover {
            background: linear-gradient(90deg, #005f8a, #0093b6);
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 10px 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2rem;
            color: #555;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .rating-stars label:hover,
        .rating-stars label:hover ~ label,
        .rating-stars input:checked ~ label {
            color: #ffd700;
        }
        footer {
            background: rgba(0, 0, 0, 0.95);
            padding: 40px 0;
            border-top: 3px solid #00b4d8;
            text-align: center;
        }
        friend-link {
            display: block;
            margin: 20px 0;
            font-size: 1.2rem;
        }
        friend-link a {
            margin: 0 15px;
            padding: 10px 20px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 5px;
            display: inline-block;
            transition: background 0.3s ease;
        }
        friend-link a:hover {
            background: rgba(0, 180, 216, 0.4);
        }
        .copyright {
            margin-top: 30px;
            color: #aaa;
            font-size: 0.9rem;
            border-top: 1px solid #444;
            padding-top: 20px;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 20px;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                margin: 10px 0;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 25px;
                right: 20px;
            }
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 2rem;
            }
            h3 {
                font-size: 1.7rem;
            }
            p {
                font-size: 1.1rem;
            }
            .functional-section {
                grid-template-columns: 1fr;
            }
            .link-list {
                grid-template-columns: 1fr;
            }
        }