* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #e0e0e0;
            background: linear-gradient(135deg, #0a0f1a 0%, #1a1f2e 100%);
            background-attachment: fixed;
            min-height: 100vh;
            padding-bottom: 60px;
        }
        a { color: #4dabf7; text-decoration: none; transition: color 0.3s, text-shadow 0.3s; }
        a:hover { color: #a5d8ff; text-shadow: 0 0 8px rgba(77, 171, 247, 0.6); }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: rgba(15, 20, 35, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #2a3b5c;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-family: 'Orbitron', 'Arial Black', sans-serif;
            font-size: 1.8rem;
            font-weight: 900;
            background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-transform: uppercase;
            letter-spacing: 1.5px;
        }
        .my-logo:hover { text-shadow: 0 0 15px rgba(70, 130, 180, 0.7); }
        .nav-toggle { display: none; }
        .nav-toggle-label {
            display: none;
            color: #4dabf7;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: #b0bec5;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background: rgba(77, 171, 247, 0.15);
            color: #fff;
        }
        .breadcrumb {
            background: rgba(30, 35, 50, 0.7);
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #3a4a6b;
        }
        .breadcrumb a { color: #8fa3c9; }
        .breadcrumb span { color: #c0c8dd; }
        .container {
            max-width: 1280px;
            margin: 2rem auto;
            padding: 0 1.5rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .content-area { background: rgba(25, 30, 45, 0.85); border-radius: 12px; padding: 2.5rem; border: 1px solid #3a4a6b; }
        .sidebar { background: rgba(25, 30, 45, 0.85); border-radius: 12px; padding: 1.8rem; border: 1px solid #3a4a6b; align-self: start; }
        h1, h2, h3, h4 { color: #f0f4f8; margin-top: 1.8em; margin-bottom: 0.7em; line-height: 1.3; }
        h1 { font-size: 2.8rem; border-bottom: 3px solid #4dabf7; padding-bottom: 0.3em; color: #ffffff; text-shadow: 0 2px 4px rgba(0,0,0,0.5); }
        h2 { font-size: 2.1rem; color: #a5d8ff; padding-left: 10px; border-left: 5px solid #ff6b6b; }
        h3 { font-size: 1.7rem; color: #4ecdc4; }
        h4 { font-size: 1.4rem; color: #ffd166; }
        p { margin-bottom: 1.5em; text-align: justify; }
        .lead { font-size: 1.25rem; color: #b0bec5; font-weight: 300; }
        strong { color: #ffb74d; font-weight: 700; }
        em { color: #c8e6c9; font-style: italic; }
        blockquote {
            border-left: 4px solid #4dabf7;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #b0bec5;
            background: rgba(77, 171, 247, 0.08);
            border-radius: 0 8px 8px 0;
        }
        ul, ol { margin: 1.5em 0 1.5em 2em; }
        li { margin-bottom: 0.7em; }
        .highlight-box {
            background: linear-gradient(to right, rgba(45, 55, 80, 0.9), rgba(30, 40, 60, 0.9));
            border-left: 5px solid #ff6b6b;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
            margin: 2rem 0;
        }
        .last-updated {
            text-align: right;
            font-size: 0.9rem;
            color: #8fa3c9;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px dashed #3a4a6b;
        }
        .article-img {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            border: 2px solid #4a5a7a;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
            max-width: 800px;
        }
        .article-img img { width: 100%; transition: transform 0.5s ease; }
        .article-img:hover img { transform: scale(1.03); }
        .img-caption {
            text-align: center;
            font-size: 0.95rem;
            color: #8fa3c9;
            padding: 0.8rem;
            background: rgba(40, 45, 65, 0.7);
        }
        .module {
            background: rgba(35, 40, 60, 0.9);
            border-radius: 10px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            border: 1px solid #4a5a7a;
        }
        .module h3 { margin-top: 0; color: #ffd166; }
        .form-group { margin-bottom: 1.2rem; }
        label { display: block; margin-bottom: 0.5rem; color: #b0bec5; font-weight: 600; }
        input[type="text"],
        input[type="email"],
        textarea,
        select {
            width: 100%;
            padding: 0.8rem 1rem;
            background: rgba(20, 25, 40, 0.9);
            border: 1px solid #5a6a8a;
            border-radius: 6px;
            color: #e0e0e0;
            font-size: 1rem;
            transition: border 0.3s, box-shadow 0.3s;
        }
        input:focus,
        textarea:focus,
        select:focus {
            outline: none;
            border-color: #4dabf7;
            box-shadow: 0 0 0 3px rgba(77, 171, 247, 0.3);
        }
        textarea { min-height: 120px; resize: vertical; }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.3rem;
            font-size: 1.8rem;
        }
        .star-rating input { display: none; }
        .star-rating label { color: #555; cursor: pointer; transition: color 0.3s; }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label { color: #ffb74d; }
        .btn {
            display: inline-block;
            background: linear-gradient(90deg, #4dabf7, #3a8bc8);
            color: white;
            padding: 0.9rem 1.8rem;
            border: none;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s;
            text-align: center;
        }
        .btn:hover {
            background: linear-gradient(90deg, #3a8bc8, #2a6fa5);
            box-shadow: 0 5px 15px rgba(77, 171, 247, 0.4);
            transform: translateY(-2px);
        }
        .quick-links ul {
            list-style: none;
            margin-left: 0;
        }
        .quick-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dotted #4a5a7a;
        }
        .quick-links a {
            display: block;
            padding: 0.5rem 0.8rem;
            border-radius: 5px;
            background: rgba(50, 60, 85, 0.5);
            transition: all 0.3s;
        }
        .quick-links a:hover {
            background: rgba(77, 171, 247, 0.2);
            padding-left: 1.2rem;
        }
        .site-footer {
            background: rgba(10, 15, 25, 0.95);
            border-top: 2px solid #2a3b5c;
            padding: 2.5rem 2rem;
            margin-top: 4rem;
            text-align: center;
        }
        friend-link {
            display: block;
            margin: 1.5rem 0;
            font-size: 1.1rem;
        }
        friend-link a {
            color: #ffd166;
            font-weight: 700;
        }
        .copyright {
            color: #8fa3c9;
            font-size: 0.9rem;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #3a4a6b;
        }
        @media (max-width: 1024px) {
            .container { grid-template-columns: 1fr; gap: 1.5rem; }
            .sidebar { order: -1; }
        }
        @media (max-width: 768px) {
            .site-header { padding: 1rem; }
            .nav-toggle-label {
                display: block;
                order: 1;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease-out;
                order: 3;
            }
            .main-nav ul {
                flex-direction: column;
                padding: 1rem 0;
                gap: 0;
            }
            .main-nav li { width: 100%; }
            .main-nav a {
                display: block;
                padding: 0.8rem 1rem;
                border-bottom: 1px solid #3a4a6b;
            }
            .nav-toggle:checked ~ .main-nav {
                max-height: 500px;
            }
            .container { padding: 0 1rem; }
            .content-area, .sidebar { padding: 1.5rem; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            h4 { font-size: 1.2rem; }
        }