* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            font-size: 1.05rem;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: #e10600; 
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #000;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .italic { font-style: italic; }
        .highlight {
            background-color: #fffacd;
            padding: 2px 5px;
            border-radius: 3px;
        }
        .section-padding {
            padding: 3rem 0;
        }
        .mobile-hidden {
            display: block;
        }
        @media (max-width: 768px) {
            .mobile-hidden {
                display: none !important;
            }
        }
        .site-header {
            background: linear-gradient(to right, #000 70%, #e10600);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-decoration: none;
        }
        .my-logo span {
            color: #e10600;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            text-decoration: none;
            color: #ffcccc;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #e10600;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: #000;
                flex-direction: column;
                padding: 2rem;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-in-out;
                z-index: 999;
            }
            .main-nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
                align-items: center;
            }
        }
        .breadcrumb {
            background-color: #f1f1f1;
            padding: 1rem 0;
            font-size: 0.95rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #e10600;
        }
        .breadcrumb .separator {
            margin: 0 8px;
            color: #999;
        }
        .main-content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-top: 2rem;
        }
        @media (max-width: 992px) {
            .main-content-area {
                grid-template-columns: 1fr;
            }
        }
        .article-main {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        .article-header {
            border-bottom: 3px solid #e10600;
            padding-bottom: 1.5rem;
            margin-bottom: 2.5rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #000;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
        }
        .article-meta {
            color: #666;
            font-size: 0.95rem;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1rem;
        }
        .last-updated {
            color: #e10600;
            font-weight: 600;
        }
        h2 {
            font-size: 2rem;
            color: #000;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
        }
        h3 {
            font-size: 1.6rem;
            color: #222;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #444;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .intro {
            font-size: 1.2rem;
            color: #444;
            background-color: #f9f9f9;
            padding: 1.5rem;
            border-left: 5px solid #e10600;
            margin-bottom: 2rem;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            max-width: 900px;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .blockquote {
            border-left: 5px solid #e10600;
            background: #f9f3f3;
            padding: 1.5rem 2rem;
            margin: 2rem 0;
            font-style: italic;
            border-radius: 0 8px 8px 0;
        }
        .blockquote p {
            margin-bottom: 0;
        }
        .tip-box {
            background: #e3f2fd;
            border-left: 5px solid #2196f3;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box h4 {
            color: #0d47a1;
            margin-top: 0;
        }
        ul, ol {
            margin-left: 1.8rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .sidebar {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: #000;
            border-bottom: 2px solid #e10600;
            padding-bottom: 0.5rem;
        }
        .related-links a {
            display: block;
            padding: 0.8rem 0;
            border-bottom: 1px dashed #eee;
            color: #333;
        }
        .related-links a:hover {
            color: #e10600;
            padding-left: 8px;
            background-color: #f9f9f9;
        }
        .search-box {
            display: flex;
            margin-top: 1rem;
        }
        .search-box input {
            flex: 1;
            padding: 0.9rem;
            border: 2px solid #ddd;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-box button {
            background: #e10600;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background: #b30500;
        }
        .user-interaction {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            margin-top: 2.5rem;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        .interaction-title {
            text-align: center;
            margin-bottom: 2rem;
            color: #000;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        .form-control {
            width: 100%;
            padding: 0.9rem;
            border: 2px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            border-color: #e10600;
            outline: none;
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            margin: 0.5rem 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            cursor: pointer;
        }
        .rating input:checked ~ label {
            color: #ffcc00;
        }
        .rating label:hover,
        .rating label:hover ~ label {
            color: #ffcc00;
        }
        .btn-submit {
            background: #e10600;
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 6px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
            display: block;
            margin: 2rem auto 0;
        }
        .btn-submit:hover {
            background: #b30500;
        }
        .site-footer {
            background: #111;
            color: #ccc;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-widget h3 {
            color: white;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e10600;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #aaa;
        }
        friend-link a:hover {
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #333;
            color: #aaa;
            font-size: 0.9rem;
        }