* { 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: 100vw;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        ul, ol { list-style-position: inside; margin-left: 1.2rem; }
        img { max-width: 100%; height: auto; display: block; }
        h1 { font-size: clamp(2.5rem, 5vw, 3.8rem); color: #1a5276; margin-bottom: 1.5rem; line-height: 1.2; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); color: #2e86c1; margin: 2.5rem 0 1.2rem; border-bottom: 2px solid #aed6f1; padding-bottom: 0.5rem; }
        h3 { font-size: clamp(1.4rem, 3vw, 1.9rem); color: #5dade2; margin: 2rem 0 1rem; }
        h4 { font-size: 1.3rem; color: #7fb3d5; margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.2rem; font-size: 1.05rem; }
        .lead { font-size: 1.3rem; color: #555; font-weight: 300; }
        .highlight { background: linear-gradient(120deg, #a9dfbf 0%, #aed6f1 100%); padding: 0.2rem 0.5rem; border-radius: 4px; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
        }
        @media (min-width: 992px) {
            .content-wrapper {
                grid-template-columns: 3fr 1fr;
            }
        }
        header {
            background: linear-gradient(135deg, #1a5276 0%, #2e86c1 100%);
            color: white;
            padding: 1rem 0;
            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;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: #f1c40f; }
        .my-logo:hover { color: #f1c40f; transform: scale(1.02); }
        .desktop-nav ul {
            display: flex;
            gap: 1.8rem;
        }
        .desktop-nav a {
            padding: 0.5rem 0;
            font-weight: 600;
            position: relative;
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #f1c40f;
            transition: width 0.3s;
        }
        .desktop-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        .mobile-nav {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: #1a5276;
            padding: 1.5rem;
            transform: translateY(-150%);
            opacity: 0;
            transition: all 0.4s ease;
            z-index: 999;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            transform: translateY(0);
            opacity: 1;
        }
        .mobile-nav ul { display: flex; flex-direction: column; gap: 1rem; }
        .mobile-nav a {
            display: block;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .hamburger { display: block; }
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #eaf2f8;
            font-size: 0.95rem;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            list-style: none;
            margin: 0;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #7fb3d5;
        }
        main { padding: 2.5rem 0; background: white; border-radius: 12px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        .article-header { text-align: center; padding-bottom: 2rem; border-bottom: 1px dashed #ddd; margin-bottom: 3rem; }
        .meta-info { color: #666; font-size: 0.95rem; margin-top: 1rem; }
        .meta-info i { margin-right: 0.5rem; color: #5dade2; }
        .article-content { padding: 0 2rem; }
        @media (max-width: 768px) { .article-content { padding: 0 1rem; } }
        .article-content section { margin-bottom: 3rem; }
        .featured-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem auto;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .internal-links {
            background: #f1f8ff;
            border-left: 5px solid #5dade2;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .internal-links h4 { margin-top: 0; color: #1a5276; }
        .internal-links ul { list-style: none; margin-left: 0; }
        .internal-links li { margin-bottom: 0.8rem; }
        .internal-links a { color: #2e86c1; font-weight: 500; }
        .internal-links a:hover { color: #1a5276; text-decoration: underline; }
        .interactive-module {
            background: linear-gradient(to right, #e8f4fc, #f9f9f9);
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #d1e7f7;
        }
        .module-title { color: #1a5276; margin-bottom: 1.5rem; display: flex; align-items: center; gap: 10px; }
        form { display: grid; gap: 1.2rem; }
        .form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #444; }
        .form-control {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #bdc3c7;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus { outline: none; border-color: #5dade2; box-shadow: 0 0 0 3px rgba(93, 173, 226, 0.2); }
        .btn {
            display: inline-block;
            padding: 0.9rem 2rem;
            background: linear-gradient(to right, #2e86c1, #1a5276);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
        }
        .btn:hover { background: linear-gradient(to right, #1a5276, #154360); transform: translateY(-3px); box-shadow: 0 7px 14px rgba(26, 82, 118, 0.3); }
        .star-rating { display: flex; gap: 0.5rem; font-size: 1.8rem; margin: 1rem 0; }
        .star-rating i { color: #ddd; cursor: pointer; transition: color 0.2s; }
        .star-rating i:hover, .star-rating i.active { color: #f1c40f; }
        .sidebar { padding: 1.5rem; }
        .sidebar-widget {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 2rem;
            border: 1px solid #eaeaea;
        }
        .sidebar-widget h3 { font-size: 1.4rem; margin-top: 0; }
        footer {
            background: #1a5276;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo { font-size: 2rem; font-weight: 800; margin-bottom: 1rem; }
        .friend-links { display: flex; flex-wrap: wrap; gap: 1rem; margin: 1rem 0; }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.9rem;
        }
        friend-link:hover { background: rgba(255,255,255,0.2); }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #bdc3c7;
        }