* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #222;
            background-color: #f8f9fa;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #d43434;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .btn {
            cursor: pointer;
            min-height: 44px;
            min-width: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        header {
            background-color: #1a1a2e;
            color: white;
            padding: 1rem 0;
            margin-bottom: 2rem;
            border-bottom: 4px solid #d43434;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #ffcc00;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #ffcc00;
        }
        .my-logo i {
            font-size: 2.2rem;
        }
        .hamburger {
            display: none;
            background: transparent;
            color: white;
            font-size: 1.8rem;
            border: none;
            padding: 5px;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
            flex-wrap: wrap;
        }
        nav a {
            color: #e0e0ff;
            font-weight: 500;
            padding: 8px 5px;
            border-radius: 4px;
        }
        nav a:hover {
            background-color: rgba(255,255,255,0.1);
            text-decoration: none;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        @media (max-width: 1024px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1 {
            font-size: 2.5rem;
            color: #1a1a2e;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #d43434;
        }
        h2 {
            font-size: 1.8rem;
            color: #2d2d5c;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eaeaea;
        }
        h3 {
            font-size: 1.4rem;
            color: #333366;
            margin: 1.5rem 0 0.8rem;
        }
        h4 {
            font-size: 1.1rem;
            color: #555;
            margin: 1rem 0 0.5rem;
        }
        p {
            margin-bottom: 1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: #444;
            font-weight: 500;
            background-color: #f0f8ff;
            padding: 1rem;
            border-left: 4px solid #0066cc;
            border-radius: 0 5px 5px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .infobox {
            background: #f5f5f7;
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            float: right;
            width: 320px;
            margin-left: 2rem;
            font-size: 0.95rem;
        }
        .infobox h3 {
            margin-top: 0;
            color: #d43434;
        }
        .infobox ul {
            list-style: none;
            padding-left: 0;
        }
        .infobox li {
            margin-bottom: 0.8rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .infobox li:before {
            content: "•";
            color: #d43434;
            font-weight: bold;
            position: absolute;
            left: 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }
        th, td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        th {
            background-color: #2d2d5c;
            color: white;
            font-weight: 600;
        }
        tr:hover {
            background-color: #f9f9f9;
        }
        .image-container {
            margin: 2rem 0;
            text-align: center;
        }
        .image-container img {
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            margin: 0 auto 10px;
            border: 1px solid #eee;
        }
        .image-caption {
            font-size: 0.9rem;
            color: #666;
            font-style: italic;
            margin-top: 0.5rem;
        }
        .gallery {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus {
            outline: none;
            border-color: #0066cc;
            box-shadow: 0 0 0 3px rgba(0,102,204,0.1);
        }
        .btn-primary {
            background-color: #d43434;
            color: white;
            font-size: 1rem;
        }
        .btn-primary:hover {
            background-color: #b02a2a;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(212, 52, 52, 0.3);
        }
        .btn-secondary {
            background-color: #2d2d5c;
            color: white;
        }
        .btn-secondary:hover {
            background-color: #1a1a2e;
            transform: translateY(-2px);
        }
        .alert {
            padding: 1rem;
            border-radius: 6px;
            margin: 1.5rem 0;
            border-left: 5px solid;
        }
        .alert-info {
            background-color: #e7f3ff;
            border-color: #0066cc;
            color: #004085;
        }
        .alert-success {
            background-color: #d4edda;
            border-color: #28a745;
            color: #155724;
        }
        .card {
            background: white;
            border-radius: 8px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
            border-top: 4px solid #d43434;
        }
        .badge {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-right: 8px;
            margin-bottom: 8px;
        }
        .badge-new {
            background-color: #ffcc00;
            color: #000;
        }
        .badge-update {
            background-color: #28a745;
            color: white;
        }
        .badge-tip {
            background-color: #17a2b8;
            color: white;
        }
        .social-share {
            display: flex;
            gap: 10px;
            margin: 2rem 0;
            flex-wrap: wrap;
        }
        .social-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 6px;
            color: white;
            font-weight: 600;
            min-width: 120px;
        }
        .social-btn.facebook { background-color: #3b5998; }
        .social-btn.twitter { background-color: #1da1f2; }
        .social-btn.reddit { background-color: #ff4500; }
        .social-btn:hover {
            opacity: 0.9;
            transform: scale(1.05);
            text-decoration: none;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background-color: #2d2d5c;
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            font-size: 1.5rem;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            z-index: 999;
            opacity: 0.8;
        }
        .back-to-top:hover {
            opacity: 1;
            transform: translateY(-5px);
            text-decoration: none;
        }
        footer {
            background-color: #1a1a2e;
            color: #ccc;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
            border-top: 4px solid #d43434;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #ffcc00;
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #aaa;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
            padding: 0.5rem;
            background: rgba(255,255,255,0.05);
            border-radius: 4px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #333;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 20px;
                right: 15px;
            }
            nav {
                width: 100%;
                display: none;
                margin-top: 1rem;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            nav li {
                width: 100%;
            }
            nav a {
                display: block;
                padding: 12px 15px;
                border: 1px solid rgba(255,255,255,0.1);
                border-radius: 6px;
            }
            .infobox {
                float: none;
                width: 100%;
                margin: 1.5rem 0;
            }
            .social-btn {
                min-width: 100px;
                justify-content: center;
            }
            .content-area, aside {
                padding: 1.5rem;
            }
        }
        .text-center { text-align: center; }
        .mt-3 { margin-top: 3rem; }
        .mb-3 { margin-bottom: 3rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }
        .flex { display: flex; }
        .justify-between { justify-content: space-between; }
        .items-center { align-items: center; }
        .gap-1 { gap: 1rem; }
        .hidden { display: none; }