* { 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: #f5f7fa;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(135deg, #0c1a2d 0%, #1a365d 100%);
            color: #fff;
            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;
            flex-wrap: wrap;
        }
        .my-logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: #4fc3f7;
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(to right, #4fc3f7, #29b6f6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo a:hover {
            text-shadow: 0 0 8px rgba(79, 195, 247, 0.5);
        }
        .nav-primary {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            color: #bbdefb;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
            transition: all 0.3s ease;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: #4fc3f7;
            border-bottom-color: #4fc3f7;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #bbdefb;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            padding: 1rem 2rem;
            background-color: #e3f2fd;
            font-size: 0.9rem;
            color: #555;
            border-bottom: 1px solid #bbdefb;
        }
        .breadcrumb a {
            color: #1565c0;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-container {
            margin: 2rem auto;
            padding: 0 2rem;
            max-width: 800px;
        }
        .search-form {
            display: flex;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            border-radius: 50px;
            overflow: hidden;
            border: 1px solid #ccc;
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-button {
            background: linear-gradient(to right, #2196f3, #1976d2);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s ease;
        }
        .search-button:hover {
            background: linear-gradient(to right, #1976d2, #0d47a1);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
        }
        .last-updated {
            text-align: right;
            font-style: italic;
            color: #777;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed #ddd;
        }
        h1 {
            color: #0d47a1;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #2196f3;
            padding-left: 1rem;
        }
        h2 {
            color: #1565c0;
            margin: 2.5rem 0 1rem 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e3f2fd;
        }
        h3 {
            color: #1976d2;
            margin: 2rem 0 1rem 0;
        }
        h4 {
            color: #2196f3;
            margin: 1.5rem 0 0.8rem 0;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            color: #444;
            font-weight: 500;
            background-color: #e3f2fd;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
            border-left: 5px solid #2196f3;
        }
        .content-img {
            float: right;
            margin: 1rem 0 1.5rem 2.5rem;
            max-width: 50%;
            border-radius: 8px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            border: 1px solid #ddd;
        }
        @media (max-width: 768px) {
            .content-img { float: none; margin: 1.5rem auto; max-width: 100%; }
        }
        .highlight {
            background-color: #fff9c4;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #ffd600;
            margin: 1.5rem 0;
        }
        .tip {
            background-color: #e8f5e9;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #4caf50;
            margin: 1.5rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: 8px;
            text-align: center;
            border: 1px solid #bbdefb;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .stat-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: #1565c0;
            margin-bottom: 0.5rem;
        }
        .stat-label {
            color: #555;
            font-weight: 600;
        }
        .link-list {
            background-color: #f9f9f9;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .link-list ul {
            list-style: none;
            column-count: 2;
            column-gap: 2rem;
        }
        .link-list li { margin-bottom: 0.8rem; }
        .link-list a {
            color: #1976d2;
            text-decoration: none;
            font-weight: 500;
        }
        .link-list a:hover {
            text-decoration: underline;
            color: #0d47a1;
        }
        aside {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            color: #0d47a1;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e3f2fd;
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffd600;
            margin-bottom: 1rem;
        }
        .stars i { cursor: pointer; transition: color 0.2s; }
        .stars i:hover { color: #ffab00; }
        .rating-widget input, .rating-widget textarea, .comment-widget textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
        }
        .rating-widget button, .comment-widget button {
            background: linear-gradient(to right, #2196f3, #1976d2);
            color: white;
            border: none;
            padding: 0.8rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .rating-widget button:hover, .comment-widget button:hover {
            background: linear-gradient(to right, #1976d2, #0d47a1);
        }
        footer {
            background: #0c1a2d;
            color: #bbdefb;
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #4fc3f7;
            margin-bottom: 1rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1rem 0;
        }
        .friend-links a {
            background: #1a365d;
            color: #bbdefb;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            text-decoration: none;
            transition: background 0.3s ease;
        }
        .friend-links a:hover {
            background: #2196f3;
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #1a365d;
            color: #90a4ae;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .nav-primary { width: 100%; margin-top: 1rem; }
            .nav-links {
                flex-direction: column;
                width: 100%;
                display: none;
                gap: 0;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                width: 100%;
                border-bottom: 1px solid #2d4466;
            }
            .nav-links a {
                display: block;
                padding: 1rem;
            }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            .main-content, .search-container { padding: 1rem; }
            article, aside { padding: 1.5rem; }
            .link-list ul { column-count: 1; }
            .stats-grid { grid-template-columns: 1fr; }
        }