* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #00a8ff;
            --secondary: #9c88ff;
            --accent: #fbc531;
            --dark: #2f3640;
            --light: #f5f6fa;
            --text: #353b48;
            --gray: #dcdde1;
            --success: #44bd32;
            --warning: #e84118;
            --transition: all 0.3s ease;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --border-radius: 12px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light);
            color: var(--text);
            line-height: 1.7;
            font-size: 1.05rem;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: 60px 0;
        }
        .site-header {
            background-color: var(--dark);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            color: white;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover, .main-nav a.active {
            border-color: var(--accent);
            color: var(--accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #f8f9fa;
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--gray);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 10px;
            color: #888;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            text-align: center;
            padding: 80px 0;
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.95;
        }
        .search-box {
            max-width: 600px;
            margin: 30px auto;
            background: white;
            padding: 5px;
            border-radius: 50px;
            display: flex;
            box-shadow: var(--shadow);
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 15px 20px;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-box button {
            background: var(--accent);
            color: var(--dark);
            border: none;
            padding: 15px 30px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #e1b12c;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        h1, h2, h3, h4 {
            color: var(--dark);
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; border-bottom: 3px solid var(--primary); padding-bottom: 10px; }
        h3 { font-size: 1.8rem; color: var(--secondary); }
        h4 { font-size: 1.4rem; color: #555; }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        strong {
            color: var(--dark);
            font-weight: 700;
        }
        em {
            color: var(--secondary);
            font-style: italic;
        }
        blockquote {
            border-left: 5px solid var(--accent);
            padding-left: 25px;
            margin: 30px 0;
            font-style: italic;
            color: #555;
            background: #f9f9f9;
            padding: 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 1.5em;
        }
        li {
            margin-bottom: 0.7em;
        }
        .article-img {
            margin: 30px auto;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            max-width: 800px;
        }
        .article-img img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .article-img img:hover {
            transform: scale(1.03);
        }
        .caption {
            text-align: center;
            font-size: 0.9rem;
            color: #777;
            padding: 10px;
            background: #f8f9fa;
            border-top: 1px solid #eee;
        }
        .sidebar {
            background: white;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            margin-top: 0;
            color: var(--dark);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--gray);
        }
        .sidebar ul {
            list-style: none;
            margin-left: 0;
        }
        .sidebar li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dotted #eee;
        }
        .user-interaction {
            background: white;
            border-radius: var(--border-radius);
            padding: 40px;
            margin-top: 40px;
            box-shadow: var(--shadow);
        }
        .interaction-title {
            text-align: center;
            margin-bottom: 30px;
        }
        .rating-form, .comment-form {
            margin-bottom: 40px;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 20px 0;
            font-size: 2rem;
            color: var(--gray);
        }
        .star-rating .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: var(--accent);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 168, 255, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 14px 30px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-block;
        }
        .btn:hover {
            background: #0097e6;
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(0, 168, 255, 0.3);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--dark);
        }
        .btn-accent:hover {
            background: #e1b12c;
        }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h4 {
            color: var(--accent);
            border-bottom: 2px solid rgba(255,255,255,0.1);
            padding-bottom: 10px;
            margin-top: 0;
        }
        friend-link {
            display: block;
            padding: 8px 0;
            border-bottom: 1px dashed rgba(255,255,255,0.1);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        .last-updated {
            background: #e3f2fd;
            padding: 15px;
            border-radius: var(--border-radius);
            margin: 30px 0;
            text-align: center;
            font-size: 0.95rem;
            color: #1565c0;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                background: var(--dark);
                padding: 20px;
                transition: left 0.5s ease;
                box-shadow: 0 10px 10px rgba(0,0,0,0.2);
                z-index: 999;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .main-nav a {
                display: block;
                padding: 15px;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.9rem; }
            h3 { font-size: 1.6rem; }
            article, .sidebar, .user-interaction {
                padding: 25px;
            }
        }
        .text-center { text-align: center; }
        .mt-4 { margin-top: 40px; }
        .mb-4 { margin-bottom: 40px; }
        .highlight {
            background: linear-gradient(120deg, rgba(0, 168, 255, 0.15) 0%, rgba(156, 136, 255, 0.15) 100%);
            padding: 20px;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--primary);
        }