:root {
            --primary: #ff7a00; 
            --secondary: #2a4365; 
            --accent: #e53e3e; 
            --light: #f7fafc;
            --dark: #1a202c;
            --gray: #718096;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f0f2f5;
            color: var(--dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--dark) 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: var(--accent); }
        .my-logo:hover { color: white; transform: scale(1.05); }
        .main-nav ul {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover { color: var(--primary); }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary);
            transition: width 0.3s;
        }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary);
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 1rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb a { color: var(--primary); }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb span { color: var(--gray); }
        .search-section {
            background: white;
            padding: 2rem 0;
            text-align: center;
            border-bottom: 1px solid #e2e8f0;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-form input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .search-form button:hover { background: var(--accent); }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        main article { background: white; border-radius: 12px; padding: 2.5rem; box-shadow: var(--shadow); }
        .article-header { margin-bottom: 2.5rem; border-bottom: 2px solid var(--primary); padding-bottom: 1.5rem; }
        h1 { color: var(--secondary); font-size: 2.8rem; line-height: 1.2; margin-bottom: 1rem; }
        .meta { color: var(--gray); font-size: 0.95rem; margin-bottom: 1.5rem; display: flex; gap: 1rem; flex-wrap: wrap; }
        .meta i { margin-right: 0.5rem; color: var(--primary); }
        .hero-img {
            width: 100%;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: transform 0.5s ease;
        }
        .hero-img:hover { transform: translateY(-5px); }
        h2, h3, h4 {
            color: var(--secondary);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            position: relative;
            padding-left: 15px;
        }
        h2 { font-size: 2rem; border-left: 5px solid var(--primary); }
        h3 { font-size: 1.6rem; border-left: 4px solid var(--accent); }
        h4 { font-size: 1.3rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        .highlight { background-color: #fff8e1; padding: 1.5rem; border-left: 4px solid var(--primary); margin: 1.5rem 0; border-radius: 0 8px 8px 0; }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .tip-card {
            background: var(--light);
            padding: 1.5rem;
            border-radius: 10px;
            border-top: 4px solid var(--primary);
            transition: var(--transition);
        }
        .tip-card:hover { transform: translateY(-10px); box-shadow: var(--shadow); }
        .link-list {
            background: #f1f5f9;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .link-list li { margin-bottom: 0.8rem; padding-left: 1.5rem; position: relative; }
        .link-list li::before { content: '🎯'; position: absolute; left: 0; }
        .link-list a { color: var(--secondary); font-weight: 600; }
        .link-list a:hover { color: var(--primary); text-decoration: underline; }
        aside .widget {
            background: white;
            border-radius: 12px;
            padding: 1.8rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }
        .widget h3 { margin-top: 0; font-size: 1.4rem; }
        .rating-widget .stars { color: #ffc107; font-size: 1.5rem; margin: 1rem 0; }
        .rating-widget button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            cursor: pointer;
            width: 100%;
            font-weight: bold;
            transition: var(--transition);
        }
        .rating-widget button:hover { background: var(--accent); }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            resize: vertical;
            min-height: 120px;
            margin-bottom: 1rem;
            font-family: inherit;
        }
        .comment-form button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            cursor: pointer;
            transition: var(--transition);
        }
        .comment-form button:hover { background: var(--dark); }
        .update { color: var(--accent); font-weight: bold; }
        .site-footer {
            background: var(--secondary);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-links h4 { color: var(--primary); border: none; padding: 0; }
        .footer-links a { display: block; margin-bottom: 0.8rem; color: #cbd5e0; }
        .footer-links a:hover { color: white; padding-left: 5px; }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            border-left: 4px solid var(--primary);
        }
        friend-link a { color: var(--primary); font-weight: bold; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav { 
                position: fixed;
                top: 70px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 70px);
                background: var(--dark);
                flex-direction: column;
                padding: 2rem;
                transition: left 0.5s ease;
                z-index: 999;
            }
            .main-nav.active { left: 0; }
            .main-nav ul { flex-direction: column; gap: 1.5rem; }
            h1 { font-size: 2.2rem; }
            .content-wrapper { padding: 1.5rem 0; }
            main article { padding: 1.5rem; }
        }