* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            min-height: 100vh;
        }
        a { color: #2563eb; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #1d4ed8; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: #1e293b;
            color: white;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #60a5fa;
            text-transform: uppercase;
            letter-spacing: 2px;
            font-family: 'Arial Black', sans-serif;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: #fbbf24; }
        .my-logo:hover { color: #93c5fd; text-decoration: none; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #cbd5e1;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover { color: white; }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #60a5fa;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background: #e2e8f0;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #cbd5e1;
        }
        .breadcrumb ol {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb a { color: #4b5563; }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: #94a3b8;
        }
        .search-container {
            max-width: 600px;
            margin: 2rem auto;
            padding: 0 1rem;
        }
        .search-form {
            display: flex;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background: #3b82f6;
            color: white;
            border: none;
            padding: 0 1.8rem;
            cursor: pointer;
            font-size: 1.2rem;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #2563eb; }
        .main-content {
            max-width: 1280px;
            margin: 0 auto;
            padding: 2rem;
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            margin-bottom: 3rem;
        }
        article { padding: 1rem; }
        h1 {
            font-size: 2.8rem;
            color: #1e293b;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid #fbbf24;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #334155;
            margin: 2.5rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 6px solid #3b82f6;
        }
        h3 {
            font-size: 1.5rem;
            color: #475569;
            margin: 2rem 0 0.8rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #64748b;
            margin: 1.5rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background: linear-gradient(120deg, #fef3c7 0%, #fde68a 100%);
            padding: 2rem;
            border-radius: 10px;
            border-left: 5px solid #f59e0b;
            margin: 2rem 0;
            font-weight: 600;
        }
        .featured-image {
            width: 80%;
            margin: 2.5rem auto;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            border: 8px solid white;
        }
        .link-list {
            background: #f8fafc;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
            border: 1px solid #e2e8f0;
        }
        .link-list h3 { margin-top: 0; }
        .link-list ul { list-style: square inside; padding-left: 1rem; }
        .link-list li { margin-bottom: 0.7rem; }
        .user-interaction {
            background: #f1f5f9;
            padding: 2rem;
            border-radius: 12px;
            margin: 3rem 0;
            border-top: 6px solid #3b82f6;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .interaction-box {
            background: white;
            padding: 1.8rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
        }
        .interaction-box h3 { margin-top: 0; }
        .rating-stars {
            color: #fbbf24;
            font-size: 1.8rem;
            margin: 0.5rem 0;
            cursor: pointer;
        }
        .rating-stars .star:hover { transform: scale(1.2); }
        textarea, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 0.8rem;
            margin: 0.5rem 0 1rem;
            border: 1px solid #cbd5e1;
            border-radius: 6px;
            font-family: inherit;
        }
        .submit-btn {
            background: #10b981;
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .submit-btn:hover { background: #059669; }
        .site-footer {
            background: #1e293b;
            color: #cbd5e1;
            padding: 3rem 2rem 1.5rem;
        }
        .footer-container {
            max-width: 1280px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo { font-size: 1.8rem; font-weight: bold; color: #60a5fa; }
        friend-link {
            display: inline-block;
            background: #334155;
            color: #cbd5e1;
            padding: 0.5rem 1rem;
            margin: 0.3rem;
            border-radius: 20px;
            font-size: 0.9rem;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: #3b82f6;
            color: white;
            text-decoration: none;
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #475569;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        @media (max-width: 992px) {
            .main-nav ul { gap: 1rem; }
            h1 { font-size: 2.4rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #1e293b;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav.active ul { display: flex; }
            .header-container { padding: 1rem; }
            .main-content { padding: 1rem; }
            .featured-image { width: 100%; }
            .interaction-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .my-logo { font-size: 1.8rem; }
        }