* {
            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-color: #f5f5f5;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: #c00;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #900;
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .header {
            background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
            color: #fff;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.3);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: #c00;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo a {
            color: #c00;
        }
        .logo a:hover {
            color: #fff;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: #fff;
            font-weight: 500;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .nav-desktop a:hover {
            border-bottom-color: #c00;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #1a1a1a;
            width: 100%;
            padding: 1rem 0;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: #fff;
            padding: 0.8rem 1rem;
            border-bottom: 1px solid #333;
        }
        .nav-mobile a:hover {
            background: #333;
        }
        .breadcrumb {
            background: #eaeaea;
            padding: 0.8rem 1rem;
            margin-bottom: 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #666;
        }
        .breadcrumb a:hover {
            color: #c00;
        }
        .breadcrumb span {
            color: #999;
        }
        .main-content {
            background: #fff;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            margin-bottom: 2rem;
        }
        .article-header {
            margin-bottom: 2rem;
            text-align: center;
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: #1a1a1a;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 2rem;
            }
        }
        .article-meta {
            color: #666;
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }
        .article-image {
            margin: 2rem 0;
            text-align: center;
        }
        .article-image img {
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
            max-width: 800px;
            margin: 0 auto;
        }
        .article-image figcaption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
        }
        .article-body {
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-body h2 {
            font-size: 1.8rem;
            color: #c00;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
        }
        .article-body h3 {
            font-size: 1.4rem;
            color: #333;
            margin: 1.5rem 0 1rem;
        }
        .article-body strong {
            color: #1a1a1a;
            font-weight: 700;
        }
        .article-body em {
            color: #666;
        }
        .highlight-box {
            background: #f9f9f9;
            border-left: 4px solid #c00;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 4px;
        }
        .tips-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .tip-card {
            background: #f0f0f0;
            padding: 1.5rem;
            border-radius: 8px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .tip-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }
        .tip-card h4 {
            color: #c00;
            margin-bottom: 0.5rem;
        }
        .interactive-section {
            background: #fff;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            margin-bottom: 2rem;
        }
        .interactive-section h2 {
            color: #1a1a1a;
            margin-bottom: 1.5rem;
            font-size: 1.8rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #333;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #c00;
            outline: none;
        }
        .btn {
            background: #c00;
            color: #fff;
            padding: 0.8rem 1.5rem;
            border: none;
            border-radius: 4px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .btn:hover {
            background: #900;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 1.5rem;
            color: #ccc;
            cursor: pointer;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: #ffcc00;
        }
        .footer-links {
            background: #1a1a1a;
            color: #fff;
            padding: 2rem 1rem;
            margin-top: 2rem;
        }
        .footer-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: #333;
            padding: 1rem;
            border-radius: 4px;
            transition: background 0.3s ease;
        }
        .web-link:hover {
            background: #444;
        }
        .web-link a {
            color: #fff;
            font-weight: 500;
        }
        .web-link a:hover {
            color: #c00;
        }
        .copyright {
            background: #000;
            color: #999;
            text-align: center;
            padding: 1.5rem;
            font-size: 0.9rem;
        }
        .copyright a {
            color: #ccc;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 0.8rem;
            }
            .main-content,
            .interactive-section {
                padding: 1.5rem;
            }
            .article-body {
                font-size: 1rem;
            }
            .tips-list {
                grid-template-columns: 1fr;
            }
        }