* {
            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: #f8f9fa;
            padding: 0;
            margin: 0;
        }
        a {
            color: #2c8cff;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0056b3;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .site-header {
            background: linear-gradient(135deg, #1a5fb4 0%, #2d8cff 100%);
            color: white;
            padding: 1rem 2rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: white;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            text-decoration: none;
            color: #ffdd40;
        }
        .breadcrumb {
            margin-top: 0.5rem;
            font-size: 0.9rem;
            color: #d1e6ff;
        }
        .breadcrumb a {
            color: #d1e6ff;
        }
        .breadcrumb a:hover {
            color: white;
        }
        .breadcrumb span {
            margin: 0 5px;
        }
        .nav-container {
            display: flex;
            align-items: center;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-menu li a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: background 0.3s ease;
        }
        .nav-menu li a:hover {
            background: rgba(255,255,255,0.2);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .main-container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        .content-area {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
            align-self: start;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a5fb4;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid #ffdd40;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #2d8cff;
            margin: 2rem 0 1rem;
            padding-top: 1rem;
            border-top: 2px solid #eaeaea;
        }
        h3 {
            font-size: 1.6rem;
            color: #333;
            margin: 1.5rem 0 0.8rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
            margin: 1.2rem 0 0.6rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: #1a5fb4;
            margin-bottom: 1.8rem;
        }
        .highlight {
            background: #fffacd;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: bold;
        }
        .emoji {
            font-size: 1.2rem;
            margin-right: 5px;
        }
        ul, ol {
            margin-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        .link-list {
            list-style: none;
            margin-left: 0;
        }
        .link-list li {
            margin-bottom: 0.5rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .link-list li:before {
            content: "🔗";
            position: absolute;
            left: 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #555;
        }
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        .form-control:focus {
            border-color: #2c8cff;
            outline: none;
            box-shadow: 0 0 0 3px rgba(44,140,255,0.2);
        }
        .btn {
            background: linear-gradient(to right, #2d8cff, #1a5fb4);
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn:hover {
            background: linear-gradient(to right, #1a5fb4, #2d8cff);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s ease;
        }
        .rating label:hover,
        .rating label:hover ~ label,
        .rating input:checked ~ label {
            color: #ffcc00;
        }
        .featured-image {
            margin: 2rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .site-footer {
            background: #1a1a1a;
            color: #ccc;
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: #ffdd40;
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            border-bottom: 2px solid #333;
            padding-bottom: 0.5rem;
        }
        .friend-links {
            list-style: none;
        }
        .friend-links li {
            margin-bottom: 0.7rem;
        }
        .friend-links a {
            color: #2c8cff;
        }
        .friend-links a:hover {
            color: #ffdd40;
        }
        .copyright {
            text-align: center;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #333;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
            .nav-menu {
                gap: 1rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1a5fb4;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem 2rem;
                box-shadow: 0 8px 16px rgba(0,0,0,0.2);
                z-index: 999;
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-menu li {
                margin-bottom: 1rem;
            }
            .nav-menu li a {
                display: block;
                padding: 0.8rem 1rem;
            }
            .main-container {
                padding: 0 1rem;
            }
            .content-area, .sidebar {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.15);
        }
        .tooltip {
            position: relative;
            border-bottom: 1px dotted #2c8cff;
            cursor: help;
        }
        .tooltip:hover:after {
            content: attr(title);
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background: #333;
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            font-size: 0.9rem;
            white-space: nowrap;
            z-index: 1000;
        }