* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            color: #e6e6e6;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: #339af0;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(22, 33, 62, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #339af0;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ff6b6b, #4dabf7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            padding: 5px 0;
        }
        .my-logo:hover {
            text-decoration: none;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: #adb5bd;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 5px;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background: rgba(77, 171, 247, 0.1);
            color: #4dabf7;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: #adb5bd;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #868e96;
            background: rgba(30, 41, 59, 0.5);
            margin-bottom: 30px;
        }
        .breadcrumb a {
            color: #adb5bd;
        }
        .breadcrumb span {
            margin: 0 8px;
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        article {
            background: rgba(30, 41, 59, 0.7);
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 2.8rem;
            color: #ffffff;
            margin-bottom: 25px;
            line-height: 1.2;
            text-align: center;
            border-bottom: 3px solid #ff6b6b;
            padding-bottom: 20px;
        }
        h2 {
            font-size: 2rem;
            color: #4dabf7;
            margin: 40px 0 20px;
            padding-left: 15px;
            border-left: 5px solid #ff6b6b;
        }
        h3 {
            font-size: 1.6rem;
            color: #ffa94d;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #69db7c;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #d0ebff;
            background: rgba(77, 171, 247, 0.1);
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 30px;
            border-left: 5px solid #4dabf7;
        }
        strong {
            color: #ffd8a8;
            font-weight: 700;
        }
        em {
            color: #ffc9c9;
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(77, 171, 247, 0.1));
            border: 1px solid #339af0;
            border-radius: 10px;
            padding: 25px;
            margin: 25px 0;
        }
        .img-container {
            margin: 30px auto;
            max-width: 800px;
            border-radius: 10px;
            overflow: hidden;
            border: 3px solid #495057;
            box-shadow: 0 5px 15px rgba(0,0,0,0.5);
        }
        .img-container img {
            width: 100%;
            height: auto;
            transition: transform 0.5s ease;
        }
        .img-container:hover img {
            transform: scale(1.02);
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: #adb5bd;
            padding: 10px;
            background: rgba(52, 58, 64, 0.8);
        }
        .feature-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .feature-card {
            background: rgba(40, 51, 78, 0.9);
            border-radius: 12px;
            padding: 25px;
            border-top: 4px solid #69db7c;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
        }
        .feature-card h3 {
            margin-top: 0;
            color: #69db7c;
        }
        form {
            background: rgba(40, 51, 78, 0.9);
            padding: 25px;
            border-radius: 12px;
            margin: 25px 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            color: #d0ebff;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border-radius: 8px;
            border: 1px solid #495057;
            background: #1e293b;
            color: #f8f9fa;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4dabf7;
            box-shadow: 0 0 0 3px rgba(77, 171, 247, 0.2);
        }
        button, .btn {
            background: linear-gradient(90deg, #ff6b6b, #ff8787);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #ff8787, #ff6b6b);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
            text-decoration: none;
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }
        .star {
            font-size: 1.8rem;
            color: #495057;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffd43b;
        }
        footer {
            background: #0f172a;
            padding: 40px 0 20px;
            margin-top: 50px;
            border-top: 2px solid #339af0;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: #4dabf7;
            margin-bottom: 20px;
            font-size: 1.4rem;
        }
        friend-link {
            display: block;
            margin-bottom: 10px;
            color: #adb5bd;
        }
        friend-link a {
            color: #adb5bd;
        }
        friend-link a:hover {
            color: #4dabf7;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-nav ul {
                gap: 15px;
            }
            h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
                order: 1;
            }
            .my-logo {
                order: 0;
                flex: 1;
            }
            .main-nav {
                order: 2;
                flex-basis: 100%;
                margin-top: 15px;
                display: none;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid #334155;
            }
            .main-nav a {
                display: block;
                padding: 15px;
            }
            article {
                padding: 25px;
            }
            .feature-box {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .lead {
                font-size: 1.1rem;
            }
        }