:root {
            --primary-dark: #0d1b2a;
            --primary-accent: #1b4965;
            --secondary-accent: #2a9d8f;
            --highlight: #e9c46a;
            --danger: #e76f51;
            --light-bg: #f8f9fa;
            --dark-text: #212529;
            --light-text: #f8f9fa;
            --gray-border: #dee2e6;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--dark-text);
            background-color: #fff;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-accent);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--primary-dark);
            color: var(--light-text);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Tahoma', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            letter-spacing: -1px;
            background: linear-gradient(to right, #e9c46a, #2a9d8f);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-transform: uppercase;
        }
        .my-logo:hover {
            text-decoration: none;
            filter: brightness(1.1);
        }
        .breadcrumb {
            background-color: #edf2f4;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin: 0 10px;
            color: var(--primary-accent);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: var(--light-text);
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            text-decoration: none;
            color: var(--highlight);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: 0;
            left: 0;
            background-color: var(--highlight);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            background: transparent;
            border: none;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: var(--light-text);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -6px);
        }
        .hero {
            background: linear-gradient(rgba(13, 27, 42, 0.9), rgba(27, 73, 101, 0.9)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: var(--light-text);
            text-align: center;
            padding: 4rem 2rem;
            margin-bottom: 3rem;
            border-radius: var(--border-radius);
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            opacity: 0.95;
        }
        .search-form {
            max-width: 600px;
            margin: 2rem auto 0;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-form input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1.1rem;
        }
        .search-form button {
            background-color: var(--secondary-accent);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--primary-accent);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 3rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            font-size: 1.1rem;
        }
        .article-content h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .article-content h2 {
            font-size: 2.2rem;
            color: var(--primary-accent);
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--highlight);
        }
        .article-content h3 {
            font-size: 1.8rem;
            color: var(--secondary-accent);
            margin: 2.5rem 0 1rem;
        }
        .article-content h4 {
            font-size: 1.5rem;
            color: #555;
            margin: 2rem 0 1rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 2rem auto;
            display: block;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -1rem;
            margin-bottom: 2rem;
        }
        .highlight-box {
            background-color: #e9f5f3;
            border-left: 5px solid var(--secondary-accent);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight-box strong {
            color: var(--primary-accent);
        }
        .key-term {
            background-color: #fff3cd;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: bold;
            color: #856404;
        }
        .inline-link {
            font-weight: 600;
            color: var(--primary-accent);
            border-bottom: 1px dashed currentColor;
        }
        .inline-link:hover {
            color: var(--danger);
            text-decoration: none;
        }
        .sidebar {
            background-color: var(--light-bg);
            padding: 2rem;
            border-radius: var(--border-radius);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-widget h3 {
            color: var(--primary-dark);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--gray-border);
        }
        .link-list {
            list-style: none;
        }
        .link-list li {
            margin-bottom: 0.8rem;
            padding-left: 1.2rem;
            position: relative;
        }
        .link-list li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--secondary-accent);
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .stars .star:hover,
        .stars .star.active {
            color: var(--highlight);
        }
        .rating-form,
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-form input,
        .comment-form input,
        .comment-form textarea {
            padding: 0.8rem;
            border: 1px solid var(--gray-border);
            border-radius: var(--border-radius);
            font-family: inherit;
        }
        .comment-form textarea {
            min-height: 150px;
            resize: vertical;
        }
        .btn {
            background-color: var(--primary-accent);
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background-color: var(--primary-dark);
            text-decoration: none;
            color: white;
        }
        .btn-danger {
            background-color: var(--danger);
        }
        .btn-danger:hover {
            background-color: #d04a2c;
        }
        .site-footer {
            background-color: var(--primary-dark);
            color: var(--light-text);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h4 {
            color: var(--highlight);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 1rem;
            margin-bottom: 0.8rem;
            border-radius: 5px;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            opacity: 0.8;
        }
        .last-updated {
            background-color: #fefefe;
            border: 1px solid var(--gray-border);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            font-size: 0.95rem;
            color: #666;
            text-align: center;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .article-content h1 {
                font-size: 2.2rem;
            }
            .article-content h2 {
                font-size: 1.9rem;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: var(--primary-dark);
                flex-direction: column;
                padding: 2rem;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease;
            }
            .main-nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
            .hamburger {
                display: flex;
            }
            .header-container {
                flex-wrap: wrap;
            }
        }