* { 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: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, #2c3e50, #4a6491);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #ffd166;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover { color: #fff; transform: scale(1.02); }
        .my-logo i { font-size: 2rem; }
        nav ul {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        nav a {
            color: #ecf0f1;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        nav a:hover, nav a.active {
            background: #ffd166;
            color: #2c3e50;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ffd166;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #7f8c8d;
            background: #f8f9fa;
            border-bottom: 1px solid #dee2e6;
        }
        .breadcrumb a { color: #4a6491; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            main { grid-template-columns: 1fr; }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
        }
        h1 {
            color: #2c3e50;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #ffd166;
            padding-left: 1rem;
        }
        h2 { color: #4a6491; margin: 2rem 0 1rem; font-size: 1.8rem; padding-bottom: 0.5rem; border-bottom: 2px dashed #dfe6e9; }
        h3 { color: #2c3e50; margin: 1.8rem 0 0.8rem; font-size: 1.4rem; }
        h4 { color: #636e72; margin: 1.5rem 0 0.6rem; font-size: 1.1rem; }
        p { margin-bottom: 1.2rem; text-align: justify; }
        .lead {
            font-size: 1.2rem;
            color: #4a6491;
            font-weight: 500;
            padding: 1rem;
            background: #f8f9fa;
            border-radius: 8px;
            border-left: 4px solid #4a6491;
        }
        .highlight {
            background: linear-gradient(120deg, #ffd16630 0%, #ffd16610 100%);
            padding: 1.5rem;
            border-radius: 8px;
            border: 1px solid #ffd166;
            margin: 1.5rem 0;
        }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        strong { color: #2c3e50; }
        a.content-link {
            color: #3498db;
            text-decoration: none;
            border-bottom: 1px dotted #3498db;
            font-weight: 600;
        }
        a.content-link:hover {
            color: #ff6b6b;
            border-bottom: 1px solid #ff6b6b;
        }
        aside { position: sticky; top: 120px; align-self: start; }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.06);
            margin-bottom: 1.5rem;
        }
        .sidebar-widget h3 {
            color: #4a6491;
            font-size: 1.3rem;
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #bdc3c7;
            border-radius: 6px;
            font-family: inherit;
        }
        button, .btn {
            background: linear-gradient(90deg, #4a6491, #2c3e50);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all 0.3s;
            width: 100%;
        }
        button:hover, .btn:hover { background: #ffd166; color: #2c3e50; transform: translateY(-2px); }
        .rating {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1rem 0;
        }
        .rating input { display: none; }
        .rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label { color: #ffd166; }
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1rem 0;
        }
        .friend-links a {
            color: #ffd166;
            text-decoration: none;
            padding: 0.3rem 0.8rem;
            background: rgba(255,255,255,0.05);
            border-radius: 4px;
        }
        .friend-links a:hover { background: rgba(255,209,102,0.2); }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6491;
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            nav { display: none; width: 100%; order: 3; margin-top: 1rem; }
            nav.active { display: block; }
            nav ul { flex-direction: column; gap: 0; }
            nav li { width: 100%; }
            nav a { display: block; padding: 0.8rem; border-bottom: 1px solid #4a6491; }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            article { padding: 1.5rem; }
            main { gap: 1.5rem; }
        }
        .text-center { text-align: center; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }
        .updated { font-style: italic; color: #7f8c8d; font-size: 0.9rem; display: flex; align-items: center; gap: 5px; }
        .img-container {
            margin: 2rem auto;
            text-align: center;
        }
        .img-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: transform 0.5s;
        }
        .img-container img:hover { transform: scale(1.02); }
        .img-caption { font-size: 0.9rem; color: #636e72; margin-top: 0.5rem; }