* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            color: #333;
            line-height: 1.7;
            font-size: 1.05rem;
        }
        a {
            text-decoration: none;
            color: #2a7de1;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1a5fb4;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            padding-left: 1.5em;
            margin: 1em 0;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: #2a7de1;
            color: white;
            padding: 12px 24px;
            border-radius: 30px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn:hover {
            background: #1a5fb4;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(26, 95, 180, 0.3);
        }
        .site-header {
            background: linear-gradient(90deg, #1a2a6c, #2a7de1, #4fd1c5);
            color: white;
            padding: 1.2rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            letter-spacing: -0.5px;
        }
        .my-logo span {
            color: #ffeb3b;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 5px 0;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffeb3b;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background: #e9f2fc;
            padding: 0.8rem 0;
            font-size: 0.95rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #888;
        }
        main {
            padding: 2.5rem 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 2px dashed #2a7de1;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a2a6c;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: #666;
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .article-meta i {
            margin-right: 5px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        h2 {
            font-size: 2rem;
            color: #2a7de1;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e4edf5;
        }
        h3 {
            font-size: 1.6rem;
            color: #1a5fb4;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #333;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight-box {
            background: linear-gradient(120deg, #e9f7ff, #ffe9f7);
            border-left: 5px solid #2a7de1;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
        }
        .img-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            border: 5px solid white;
            max-width: 700px;
            margin: 0 auto;
        }
        .caption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: #1a2a6c;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e4edf5;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: 2px solid #ddd;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
        }
        .search-form button {
            background: #2a7de1;
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #1a5fb4;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #ffcc00;
            margin: 0.5rem 0 1rem;
            cursor: pointer;
        }
        .stars i {
            margin: 0 2px;
            transition: transform 0.2s;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            height: 120px;
            padding: 12px;
            border: 2px solid #ddd;
            border-radius: 10px;
            font-size: 1rem;
            resize: vertical;
            margin-bottom: 1rem;
        }
        .comment-form button {
            width: 100%;
        }
        .site-footer {
            background: linear-gradient(90deg, #1a2a6c, #2a7de1);
            color: white;
            padding: 3rem 0 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-widget h3 {
            color: #ffeb3b;
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #c7e0ff;
        }
        friend-link a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.2);
            font-size: 0.9rem;
            color: #c7e0ff;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(26, 42, 108, 0.98);
                padding: 1rem 0;
                text-align: center;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            }
            .main-nav.active ul {
                display: flex;
            }
            .main-nav li {
                margin: 0.5rem 0;
            }
            h1 {
                font-size: 2.2rem;
            }
            .article-content {
                padding: 1.8rem;
            }
            .sidebar {
                padding: 1.8rem;
            }
        }