* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: #2c5aa0;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1a3c6e;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            list-style-position: inside;
            margin: 1rem 0;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a3c6e 0%, #2c5aa0 100%);
            color: white;
            padding: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
        }
        .my-logo i {
            margin-right: 10px;
            color: #ffd166;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb .container {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #888;
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        article {
            background: white;
            padding: 3rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.07);
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a3c6e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffd166;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #2c5aa0;
            margin: 2.5rem 0 1rem;
            padding-left: 10px;
            border-left: 5px solid #2c5aa0;
        }
        h3 {
            font-size: 1.6rem;
            color: #3a6bc2;
            margin: 2rem 0 0.8rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
            margin: 1.5rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        strong {
            color: #1a3c6e;
            font-weight: 700;
        }
        em {
            color: #666;
            font-style: italic;
        }
        blockquote {
            border-left: 4px solid #ffd166;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .article-img {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .article-img figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: #777;
            padding: 0.8rem;
            background-color: #f8f9fa;
        }
        .form-section {
            background-color: #f1f7ff;
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
            border: 1px solid #d0e0ff;
        }
        .form-title {
            color: #1a3c6e;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        input, select, textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #b0c4de;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, select:focus, textarea:focus {
            outline: none;
            border-color: #2c5aa0;
            box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.2);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffc107;
            margin: 0.5rem 0;
        }
        .rating i {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .rating i:hover {
            transform: scale(1.2);
        }
        button {
            background: linear-gradient(to right, #2c5aa0, #1a3c6e);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        button:hover {
            background: linear-gradient(to right, #1a3c6e, #2c5aa0);
            box-shadow: 0 6px 12px rgba(26, 60, 110, 0.25);
        }
        footer {
            background-color: #1a3c6e;
            color: #e0e7ff;
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #ffd166;
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
            padding-left: 0;
            border-left: none;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section li {
            margin-bottom: 0.7rem;
        }
        .footer-section a {
            color: #c0d0ff;
        }
        .footer-section a:hover {
            color: #ffd166;
            padding-left: 5px;
            transition: all 0.3s;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        friend-link h4 {
            color: #ffd166;
            margin-bottom: 1rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1rem;
            margin-bottom: 0.5rem;
            color: #a0b8ff;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2c5aa0;
            font-size: 0.9rem;
            color: #a0b8ff;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.4rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            nav.active {
                max-height: 500px;
                margin-top: 1rem;
            }
            nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            nav a {
                display: block;
                padding: 0.8rem;
                border-radius: 6px;
                background-color: rgba(255, 255, 255, 0.1);
            }
            h1 { font-size: 2rem; }
            .article-img {
                margin: 1.5rem 0;
            }
            .form-section {
                padding: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            article { padding: 1.5rem; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            button { width: 100%; justify-content: center; }
        }
        .text-center { text-align: center; }
        .mt-3 { margin-top: 3rem; }
        .mb-3 { margin-bottom: 3rem; }
        .highlight {
            background-color: #fff9e6;
            padding: 2rem;
            border-radius: 8px;
            border-left: 5px solid #ffd166;
            margin: 2rem 0;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #777;
            text-align: right;
            margin-bottom: 1rem;
            font-style: italic;
        }
        .last-updated i {
            margin-right: 5px;
            color: #2c5aa0;
        }