* {
            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: linear-gradient(135deg, #0a2a3f 0%, #1a3a5f 100%);
            color: #e0e0e0;
            padding-top: 80px;
        }
        a {
            color: #4da6ff;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #80c1ff;
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: rgba(10, 25, 47, 0.95);
            border-bottom: 2px solid #4da6ff;
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            padding: 15px 0;
            backdrop-filter: blur(10px);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: bold;
            color: #4da6ff;
            text-shadow: 0 0 10px rgba(77, 166, 255, 0.5);
            padding: 5px 10px;
            border-radius: 5px;
            background: rgba(0, 30, 60, 0.7);
        }
        .my-logo:hover {
            color: #80c1ff;
            text-decoration: none;
            background: rgba(0, 40, 80, 0.9);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        nav ul li a {
            color: #b0d0ff;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        nav ul li a:hover {
            background-color: rgba(77, 166, 255, 0.2);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: #4da6ff;
            cursor: pointer;
            background: none;
            border: none;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: rgba(15, 35, 65, 0.8);
            margin-top: 80px;
            border-bottom: 1px solid #2a4a7a;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 10px;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 10px;
            color: #4da6ff;
        }
        .breadcrumb a {
            color: #b0d0ff;
        }
        main {
            background-color: rgba(20, 40, 70, 0.9);
            border-radius: 10px;
            padding: 30px;
            margin: 20px auto;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        h1, h2, h3, h4 {
            color: #4da6ff;
            margin-top: 1.5em;
            margin-bottom: 0.5em;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            text-align: center;
            border-bottom: 3px solid #4da6ff;
            padding-bottom: 15px;
            margin-top: 0;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.7);
        }
        h2 {
            font-size: 2.2rem;
            border-left: 5px solid #4da6ff;
            padding-left: 15px;
            background: rgba(77, 166, 255, 0.1);
            border-radius: 0 5px 5px 0;
        }
        h3 {
            font-size: 1.8rem;
            color: #80c1ff;
        }
        h4 {
            font-size: 1.4rem;
            color: #a6d2ff;
        }
        p {
            margin-bottom: 1.2em;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: rgba(77, 166, 255, 0.15);
            border-left: 4px solid #4da6ff;
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 5px 5px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            border: 3px solid #4da6ff;
            display: block;
            margin: 25px auto;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.6);
            transition: transform 0.3s ease;
        }
        .feature-img:hover {
            transform: scale(1.02);
        }
        .form-section {
            background-color: rgba(30, 60, 100, 0.8);
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
            border: 1px solid #2a5a9a;
        }
        .form-title {
            color: #80c1ff;
            font-size: 1.5rem;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .form-group {
            margin-bottom: 15px;
        }
        label {
            display: block;
            margin-bottom: 5px;
            color: #b0d0ff;
            font-weight: 500;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px;
            border-radius: 5px;
            border: 1px solid #2a5a9a;
            background-color: rgba(10, 25, 47, 0.8);
            color: #e0e0e0;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4da6ff;
            box-shadow: 0 0 8px rgba(77, 166, 255, 0.5);
        }
        button {
            background: linear-gradient(90deg, #4da6ff, #2a80cc);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            font-size: 1rem;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        button:hover {
            background: linear-gradient(90deg, #80c1ff, #4da6ff);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(77, 166, 255, 0.4);
        }
        footer {
            background-color: rgba(10, 25, 47, 0.95);
            border-top: 2px solid #4da6ff;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        friend-link {
            display: block;
            background-color: rgba(20, 40, 70, 0.8);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid #2a4a7a;
        }
        friend-link h3 {
            color: #80c1ff;
            margin-top: 0;
            margin-bottom: 15px;
            font-size: 1.4rem;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        friend-link ul li a {
            color: #b0d0ff;
            padding: 5px 0;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }
        friend-link ul li a:hover {
            color: #4da6ff;
            padding-left: 5px;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #2a4a7a;
            color: #8a9bb2;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            body {
                padding-top: 70px;
            }
            .hamburger {
                display: block;
            }
            nav ul {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: rgba(10, 25, 47, 0.98);
                flex-direction: column;
                align-items: center;
                padding: 20px 0;
                gap: 15px;
                display: none;
                border-bottom: 2px solid #4da6ff;
                z-index: 999;
            }
            nav ul.active {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .header-container, .breadcrumb ol {
                padding: 0 15px;
            }
            main {
                padding: 20px;
                margin: 10px;
            }
            .feature-img {
                margin: 15px auto;
            }
        }
        .text-center {
            text-align: center;
        }
        .bold {
            font-weight: bold;
            color: #80c1ff;
        }
        .last-updated {
            background-color: rgba(30, 60, 100, 0.8);
            padding: 10px 15px;
            border-radius: 5px;
            margin: 20px 0;
            font-style: italic;
            color: #b0d0ff;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            color: #ffcc00;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .rating input:checked ~ label {
            color: #666;
        }
        .rating label:hover,
        .rating label:hover ~ label {
            color: #ffcc00;
        }