* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            padding: 0;
            margin: 0;
        }
        a {
            color: #0033A0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #FF6B00;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        .header {
            background: linear-gradient(90deg, #0033A0 0%, #0056D6 100%);
            color: white;
            padding: 1.5rem 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;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            background: linear-gradient(45deg, #FFD700, #FFFFFF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            padding: 0.5rem;
            border-radius: 8px;
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .nav-container {
            display: flex;
            align-items: center;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2.5rem;
        }
        .nav-menu li a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.75rem 1.2rem;
            border-radius: 6px;
            transition: all 0.3s ease;
        }
        .nav-menu li a:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .breadcrumb {
            margin-top: 1rem;
            font-size: 0.95rem;
            color: #CCDDFF;
        }
        .breadcrumb a {
            color: #CCDDFF;
        }
        .breadcrumb a:hover {
            color: #FFD700;
        }
        .hamburger {
            display: none;
            font-size: 2rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            transition: transform 0.3s ease;
        }
        .hamburger:hover {
            transform: rotate(90deg);
        }
        .search-box {
            margin: 2rem auto;
            max-width: 700px;
            padding: 0 2rem;
        }
        .search-form {
            display: flex;
            gap: 0;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 6px 15px rgba(0, 51, 160, 0.2);
        }
        .search-input {
            flex: 1;
            padding: 1.2rem 1.8rem;
            border: none;
            font-size: 1.1rem;
            outline: none;
            background: white;
        }
        .search-button {
            background: #FF6B00;
            color: white;
            border: none;
            padding: 0 2.5rem;
            font-size: 1.2rem;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .search-button:hover {
            background: #E55A00;
        }
        .main-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            max-width: 1400px;
            margin: 2.5rem auto;
            padding: 0 2rem;
        }
        .content {
            background: white;
            padding: 3rem;
            border-radius: 20px;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 20px;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 3.2rem;
            color: #0033A0;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
            padding-bottom: 1rem;
            border-bottom: 4px solid #FF6B00;
        }
        h2 {
            font-size: 2.4rem;
            color: #0056D6;
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid #CCDDFF;
        }
        h3 {
            font-size: 1.9rem;
            color: #007BFF;
            margin: 2.5rem 0 1.2rem;
        }
        h4 {
            font-size: 1.5rem;
            color: #333;
            margin: 2rem 0 1rem;
            font-style: italic;
        }
        p {
            margin-bottom: 1.8rem;
            font-size: 1.15rem;
            text-align: justify;
            line-height: 1.9;
            color: #444;
        }
        .highlight {
            background: linear-gradient(120deg, #FFFBCC 0%, #FFFBCC 100%);
            padding: 0.3rem 0.6rem;
            border-radius: 4px;
            font-weight: bold;
        }
        .bold {
            font-weight: 900;
            color: #0033A0;
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: #666;
            margin-bottom: 2.5rem;
            padding: 1rem;
            background: #F0F8FF;
            border-radius: 10px;
        }
        .article-image {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 900px;
        }
        .article-image figcaption {
            margin-top: 1rem;
            font-size: 0.95rem;
            color: #666;
            font-style: italic;
        }
        .interaction-section {
            margin-top: 4rem;
            padding: 2.5rem;
            background: #F9FDFF;
            border-radius: 15px;
            border-left: 6px solid #0033A0;
        }
        .form-group {
            margin-bottom: 2rem;
        }
        label {
            display: block;
            margin-bottom: 0.8rem;
            font-weight: 600;
            color: #0056D6;
        }
        input, textarea, select {
            width: 100%;
            padding: 1rem;
            border: 2px solid #CCDDFF;
            border-radius: 10px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #0033A0;
            outline: none;
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-button {
            background: linear-gradient(90deg, #0033A0, #0056D6);
            color: white;
            border: none;
            padding: 1.2rem 3rem;
            font-size: 1.2rem;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: block;
            margin: 0 auto;
        }
        .submit-button:hover {
            background: linear-gradient(90deg, #00257A, #0033A0);
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 51, 160, 0.3);
        }
        .rating-stars {
            display: flex;
            gap: 1rem;
            font-size: 2rem;
            color: #FFD700;
            margin-bottom: 1.5rem;
        }
        .rating-stars i {
            cursor: pointer;
            transition: transform 0.2s ease;
        }
        .rating-stars i:hover {
            transform: scale(1.3);
        }
        .footer {
            background: #001F5C;
            color: white;
            padding: 3rem 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-section h3 {
            color: #FFD700;
            margin-bottom: 1.5rem;
            font-size: 1.8rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 1rem;
        }
        .footer-links a {
            color: #CCDDFF;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: #FF6B00;
        }
        friend-link {
            display: block;
            padding: 1rem;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            margin-bottom: 1rem;
            text-align: center;
            font-weight: bold;
            transition: background 0.3s ease;
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid #335588;
            color: #99BBEE;
            font-size: 0.95rem;
        }
        @media (max-width: 1024px) {
            .main-container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .sidebar {
                position: static;
            }
            h1 {
                font-size: 2.8rem;
            }
            h2 {
                font-size: 2.1rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1.5rem;
                gap: 1rem;
            }
            .nav-menu.active {
                display: flex;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 2rem;
                right: 2rem;
            }
            .content, .sidebar {
                padding: 2rem;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.9rem;
            }
            .search-box {
                padding: 0 1rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: 15px;
            }
            .search-input, .search-button {
                width: 100%;
                border-radius: 0;
                padding: 1rem;
            }
        }
        @media (max-width: 480px) {
            .header {
                padding: 1rem;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .content, .sidebar {
                padding: 1.5rem;
            }
        }