* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-color: #D4AF37; 
            --secondary-color: #800000; 
            --accent-color: #228B22; 
            --text-dark: #2C3E50;
            --text-light: #5D6D7E;
            --bg-light: #F8F9F9;
            --bg-white: #FFFFFF;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.7;
            font-size: 18px;
        }
        h1, h2, h3, h4 {
            color: var(--secondary-color);
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-left: 6px solid var(--primary-color);
            padding-left: 1rem;
            margin-top: 2rem;
        }
        h2 {
            font-size: 2.2rem;
            border-bottom: 2px solid var(--accent-color);
            padding-bottom: 0.5rem;
            margin-top: 3rem;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin-top: 2.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--secondary-color), #4A0000);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            font-size: 2.5rem;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        nav a:hover {
            background-color: var(--primary-color);
            color: var(--secondary-color);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary-color);
        }
        .breadcrumb {
            background-color: var(--bg-white);
            padding: 1rem 0;
            margin-bottom: 2rem;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb a {
            color: var(--text-light);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        main {
            padding: 2rem 0;
            background-color: var(--bg-white);
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .article-content {
            padding: 0 2rem;
        }
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .feature-card {
            background: var(--bg-light);
            padding: 2rem;
            border-radius: 10px;
            text-align: center;
            transition: var(--transition);
            border: 1px solid #E5E7E9;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .feature-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
            border: 5px solid var(--primary-color);
        }
        .highlight {
            background-color: #FFF9E6;
            padding: 1.5rem;
            border-left: 4px solid var(--primary-color);
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box {
            background-color: #E8F6F3;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
            border-left: 4px solid var(--accent-color);
        }
        .form-container {
            background-color: var(--bg-light);
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--secondary-color);
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #DDD;
            border-radius: 5px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            border-color: var(--primary-color);
            outline: none;
        }
        button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        button:hover {
            background-color: var(--primary-color);
            color: var(--secondary-color);
        }
        .rating {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .stars {
            color: var(--primary-color);
            font-size: 1.5rem;
            cursor: pointer;
        }
        .comment {
            background-color: var(--bg-light);
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 1.5rem;
            border-left: 3px solid var(--accent-color);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            color: var(--text-light);
        }
        .longtail-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
            padding: 2rem;
            background: linear-gradient(to right, var(--secondary-color), #5D0000);
            border-radius: 10px;
        }
        .web-link {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 5px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(212, 175, 55, 0.3);
            transform: translateX(5px);
        }
        .web-link a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            display: block;
        }
        .web-link a:hover {
            color: var(--primary-color);
        }
        footer {
            background-color: var(--text-dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #BDC3C7;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .features { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 1rem;
            }
            nav ul {
                flex-direction: column;
                display: none;
                width: 100%;
                text-align: center;
                gap: 0;
            }
            nav ul.active {
                display: flex;
                margin-top: 1rem;
            }
            nav a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.2rem;
                right: 20px;
            }
            .article-content {
                padding: 0 1rem;
            }
            .form-container {
                padding: 1.5rem;
            }
            .footer-content {
                flex-direction: column;
            }
        }
        @media (max-width: 480px) {
            body { font-size: 16px; }
            h1 { font-size: 2rem; }
            .logo { font-size: 1.8rem; }
            .longtail-links { grid-template-columns: 1fr; }
        }