* {
            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-color: #f8f9fa;
            max-width: 100%;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }
        ul, ol {
            list-style-position: inside;
            margin-left: 1.5rem;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .site-header {
            background: linear-gradient(135deg, #0a2e7a 0%, #0c3aa8 100%);
            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 {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            letter-spacing: 1px;
            color: #ffd700;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .my-logo:hover {
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .main-nav ul {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            color: #ffd700;
            border-bottom-color: #ffd700;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #0a2e7a;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
        }
        .main-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1 {
            font-size: 2.8rem;
            color: #0a2e7a;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffd700;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #0c3aa8;
            margin: 2.5rem 0 1.5rem;
            padding-left: 0.5rem;
            border-left: 5px solid #ffd700;
        }
        h3 {
            font-size: 1.6rem;
            color: #1a56db;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #3b82f6;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        strong {
            color: #0a2e7a;
        }
        .last-updated {
            font-style: italic;
            color: #6b7280;
            margin-bottom: 2rem;
            text-align: right;
            border-bottom: 1px dashed #d1d5db;
            padding-bottom: 1rem;
        }
        .article-img {
            width: 80%;
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        .article-img figcaption {
            text-align: center;
            font-style: italic;
            padding: 0.8rem;
            background-color: #f1f5f9;
            color: #4b5563;
        }
        .content-link {
            color: #1d4ed8;
            font-weight: 600;
            border-bottom: 1px dotted #1d4ed8;
        }
        .content-link:hover {
            color: #0a2e7a;
            border-bottom-style: solid;
        }
        .sidebar h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: #0a2e7a;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #4b5563;
        }
        .form-control {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #d1d5db;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: #0a2e7a;
            box-shadow: 0 0 0 3px rgba(10, 46, 122, 0.1);
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, #0a2e7a, #1d4ed8);
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 100%;
            text-align: center;
        }
        .btn:hover {
            background: linear-gradient(to right, #0c3aa8, #2563eb);
            transform: translateY(-2px);
            box-shadow: 0 5px 12px rgba(10, 46, 122, 0.2);
        }
        .rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
        }
        .rating input {
            display: none;
        }
        .rating label {
            color: #d1d5db;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating label:hover,
        .rating label:hover ~ label,
        .rating input:checked ~ label {
            color: #ffd700;
        }
        .site-footer {
            background-color: #111827;
            color: #d1d5db;
            padding: 3rem 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: #ffd700;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            margin-bottom: 1rem;
            color: #93c5fd;
        }
        friend-link:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #374151;
            font-size: 0.9rem;
            color: #9ca3af;
        }
        @media (max-width: 1024px) {
            .container {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1rem;
                right: 2rem;
            }
            .main-nav {
                width: 100%;
                display: none;
                margin-top: 1rem;
            }
            .main-nav.active {
                display: block;
            }
            .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: 1rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .container {
                padding: 0 1rem;
            }
            .main-content {
                padding: 1.5rem;
            }
        }