* { 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: #2c3e50;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { color: #1a5276; font-weight: 700; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); border-left: 6px solid #e74c3c; padding-left: 1rem; margin-top: 1.5rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); border-bottom: 3px solid #3498db; padding-bottom: 0.5rem; margin-top: 2.5rem; }
        h3 { font-size: clamp(1.5rem, 3vw, 2rem); color: #2980b9; margin-top: 2rem; }
        h4 { font-size: 1.4rem; color: #16a085; margin-top: 1.5rem; }
        p { margin-bottom: 1.2rem; font-size: 1.1rem; text-align: justify; }
        .lead { font-size: 1.3rem; color: #34495e; font-weight: 500; }
        .highlight { background-color: #fffacd; padding: 0.2rem 0.5rem; border-radius: 3px; }
        strong { color: #c0392b; }
        em { color: #27ae60; }
        a { color: #2980b9; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e74c3c; text-decoration: underline; }
        ul, ol { margin: 1rem 0 1rem 2rem; }
        li { margin-bottom: 0.5rem; }
        blockquote {
            border-left: 5px solid #3498db;
            background-color: #ecf0f1;
            padding: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            border-radius: 0 8px 8px 0;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-top: 2rem;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        .site-header {
            background: linear-gradient(90deg, #1a5276, #2c3e50);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: #f39c12; }
        .my-logo span { color: #f39c12; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: #ecf0f1;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: #f39c12;
            transition: width 0.3s;
        }
        .main-nav a:hover::after,
        .main-nav a.active::after { width: 100%; }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                background: #2c3e50;
                flex-direction: column;
                padding: 2rem;
                transition: left 0.4s ease;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            .main-nav.active { left: 0; }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 0.8rem;
            border-radius: 5px;
            margin: 1rem 0;
            font-size: 0.95rem;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:hover { color: #1a5276; }
        main {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.08);
            margin-bottom: 2rem;
        }
        .article-meta {
            color: #7f8c8d;
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            border-bottom: 1px dashed #bdc3c7;
            padding-bottom: 1rem;
        }
        .article-image {
            width: 100%;
            border-radius: 10px;
            overflow: hidden;
            margin: 2rem 0;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .article-image img {
            width: 100%;
            transition: transform 0.5s;
        }
        .article-image:hover img { transform: scale(1.03); }
        .figcaption {
            text-align: center;
            font-style: italic;
            color: #7f8c8d;
            padding: 0.5rem;
            background: #f8f9fa;
        }
        .sidebar {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .widget {
            margin-bottom: 2.5rem;
        }
        .widget-title {
            font-size: 1.4rem;
            color: #1a5276;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f39c12;
            margin-bottom: 1.2rem;
        }
        .search-box form {
            display: flex;
        }
        .search-box input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 2px solid #3498db;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-box button {
            background: #3498db;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-box button:hover { background: #2980b9; }
        .related-links a {
            display: block;
            padding: 0.8rem;
            background: #f8f9fa;
            margin-bottom: 0.7rem;
            border-radius: 6px;
            border-left: 4px solid #3498db;
            transition: all 0.3s;
        }
        .related-links a:hover {
            background: #e3f2fd;
            border-left-color: #e74c3c;
            transform: translateX(5px);
        }
        .interactive-section {
            background: #f0f8ff;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #cce7ff;
        }
        .interactive-section h3 { color: #1a5276; text-align: center; }
        .rating-widget, .comment-widget {
            margin-top: 1.5rem;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 2rem;
            cursor: pointer;
        }
        .star { color: #ddd; transition: color 0.2s; }
        .star:hover,
        .star.active { color: #f39c12; }
        .comment-widget textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid #bdc3c7;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            margin-bottom: 1rem;
            resize: vertical;
            min-height: 120px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, #3498db, #2c80b4);
            color: white;
            padding: 12px 28px;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s;
        }
        .btn:hover {
            background: linear-gradient(to right, #2980b9, #1c6da4);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(50, 150, 250, 0.3);
        }
        .btn-block { width: 100%; }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            margin-bottom: 1rem;
        }
        .footer-links a {
            color: #bdc3c7;
            display: block;
            margin-bottom: 0.7rem;
        }
        .footer-links a:hover { color: #f39c12; }
        friend-link {
            display: block;
            background: #34495e;
            padding: 1.2rem;
            border-radius: 6px;
            margin-top: 1rem;
            border-left: 5px solid #f39c12;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6572;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .container { padding: 0 15px; }
            main, .sidebar { padding: 1.5rem; }
            .content-wrapper { gap: 1.5rem; }
            .interactive-section { padding: 1.5rem; }
        }