* {
            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: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        h1, h2, h3, h4 {
            font-family: Georgia, 'Times New Roman', Times, serif;
            color: #1a365d;
            margin-top: 1.5em;
            margin-bottom: 0.75em;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 4px solid #e53e3e;
            padding-bottom: 15px;
            margin-top: 0.5em;
        }
        h2 {
            font-size: 2.2rem;
            color: #2d3748;
            padding-left: 10px;
            border-left: 5px solid #4299e1;
        }
        h3 {
            font-size: 1.8rem;
            color: #4a5568;
        }
        h4 {
            font-size: 1.4rem;
            color: #718096;
        }
        p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        a {
            color: #3182ce;
            text-decoration: none;
            transition: color 0.3s ease, background-color 0.3s ease;
        }
        a:hover {
            color: #2c5282;
            text-decoration: underline;
        }
        strong {
            color: #2d3748;
            font-weight: 700;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #4a5568;
            background: #e6fffa;
            padding: 20px;
            border-radius: 10px;
            margin: 25px 0;
            border-left: 5px solid #38b2ac;
        }
        .highlight {
            background-color: #fffacd;
            padding: 2px 5px;
            border-radius: 3px;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #718096;
            font-style: italic;
            text-align: right;
            margin-bottom: 2em;
            padding-bottom: 10px;
            border-bottom: 1px dashed #cbd5e0;
        }
        .container {
            display: grid;
            grid-template-columns: 1fr;
            grid-template-areas:
                "header"
                "breadcrumb"
                "main"
                "sidebar"
                "footer";
            gap: 30px;
        }
        @media (min-width: 992px) {
            .container {
                grid-template-columns: 3fr 1fr;
                grid-template-areas:
                    "header header"
                    "breadcrumb breadcrumb"
                    "main sidebar"
                    "footer footer";
            }
        }
        header {
            grid-area: header;
            background: linear-gradient(135deg, #1a365d 0%, #2d3748 100%);
            color: white;
            padding: 20px;
            border-radius: 0 0 15px 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 900;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #e53e3e;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #90cdf4;
        }
        .hamburger {
            display: block;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (min-width: 768px) {
            .hamburger {
                display: none;
            }
        }
        nav {
            margin-top: 20px;
        }
        .nav-links {
            display: none;
            flex-direction: column;
            list-style: none;
            background: #2d3748;
            border-radius: 10px;
            padding: 15px;
        }
        .nav-links.active {
            display: flex;
        }
        @media (min-width: 768px) {
            .nav-links {
                display: flex;
                flex-direction: row;
                justify-content: flex-start;
                background: transparent;
                padding: 0;
                margin-top: 15px;
            }
        }
        .nav-links li {
            margin: 5px 0;
        }
        @media (min-width: 768px) {
            .nav-links li {
                margin: 0 15px 0 0;
            }
        }
        .nav-links a {
            color: #cbd5e0;
            padding: 10px 15px;
            border-radius: 5px;
            display: block;
            font-weight: 500;
        }
        .nav-links a:hover {
            background-color: #4a5568;
            color: white;
            text-decoration: none;
        }
        .breadcrumb {
            grid-area: breadcrumb;
            padding: 15px;
            background-color: #edf2f7;
            border-radius: 10px;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: #4a5568;
        }
        .breadcrumb span {
            color: #718096;
        }
        main {
            grid-area: main;
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .content-section {
            margin-bottom: 40px;
        }
        .article-img {
            width: 100%;
            border-radius: 10px;
            margin: 25px auto;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 1px solid #e2e8f0;
        }
        .feature-list {
            background: #f7fafc;
            padding: 25px;
            border-radius: 10px;
            margin: 25px 0;
            border-left: 5px solid #4299e1;
        }
        .feature-list li {
            margin-bottom: 10px;
            margin-left: 20px;
        }
        .inter-link {
            background: #ebf8ff;
            padding: 15px;
            border-radius: 8px;
            margin: 20px 0;
            border: 1px solid #bee3f8;
        }
        aside {
            grid-area: sidebar;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            margin-bottom: 30px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget-title {
            font-size: 1.5rem;
            color: #2d3748;
            border-bottom: 3px solid #e53e3e;
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        input, textarea, select {
            padding: 12px 15px;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
            width: 100%;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #3182ce;
            box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.2);
        }
        button {
            background: #3182ce;
            color: white;
            border: none;
            padding: 14px 20px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: background 0.3s ease, transform 0.2s ease;
        }
        button:hover {
            background: #2c5282;
            transform: translateY(-2px);
        }
        .stars {
            display: flex;
            justify-content: space-between;
            font-size: 1.8rem;
            color: #cbd5e0;
            margin: 10px 0;
        }
        .stars i {
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .stars i:hover,
        .stars i.active {
            color: #f6ad55;
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            padding: 12px 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .related-links li:last-child {
            border-bottom: none;
        }
        footer {
            grid-area: footer;
            background: #1a202c;
            color: #a0aec0;
            padding: 40px 20px;
            border-radius: 15px 15px 0 0;
            text-align: center;
        }
        .friend-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid #2d3748;
        }
        friend-link {
            background: #2d3748;
            padding: 10px 20px;
            border-radius: 30px;
            transition: all 0.3s ease;
        }
        friend-link a {
            color: #90cdf4;
            font-weight: 500;
        }
        friend-link:hover {
            background: #4a5568;
            transform: scale(1.05);
        }
        .copyright {
            font-size: 0.9rem;
            color: #718096;
        }
        .text-center { text-align: center; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mt-3 { margin-top: 1.5rem; }
        .py-2 { padding-top: 10px; padding-bottom: 10px; }