* { 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;
            display: flex;
            flex-direction: column;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(90deg, #1a237e 0%, #283593 50%, #3949ab 100%);
            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;
        }
        .logo a {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            color: #ffeb3b;
            text-decoration: none;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
            letter-spacing: 1px;
            transition: transform 0.3s;
        }
        .logo a:hover {
            transform: scale(1.05);
        }
        .logo span {
            color: #4fc3f7;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            color: #e3f2fd;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffeb3b;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #283593;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 6px 12px rgba(0,0,0,0.2);
            z-index: 999;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: #e3f2fd;
            text-decoration: none;
            padding: 1rem;
            border-bottom: 1px solid #3949ab;
            transition: background 0.3s;
        }
        .nav-mobile a:hover {
            background-color: #3949ab;
            color: #ffeb3b;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e8eaf6;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #5c6bc0;
        }
        .breadcrumb a {
            color: #3949ab;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        .article-header {
            margin-bottom: 2rem;
            border-bottom: 3px solid #ffeb3b;
            padding-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .meta {
            color: #666;
            font-style: italic;
            margin-bottom: 1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #3949ab;
            font-weight: 600;
            margin-bottom: 2rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #c5cae9;
        }
        h3 {
            font-size: 1.5rem;
            color: #5c6bc0;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background-color: #f0f4ff;
            border-left: 5px solid #3949ab;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .stats-box {
            background: linear-gradient(145deg, #e3f2fd, #bbdefb);
            border: 1px solid #90caf9;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .tip {
            background-color: #fff8e1;
            border: 1px solid #ffd54f;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 1.5rem 0;
        }
        .tip i {
            color: #ff9800;
            margin-right: 10px;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            margin: 1.5rem auto;
            display: block;
            border: 3px solid #e3f2fd;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -0.5rem;
            margin-bottom: 2rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        strong {
            color: #1a237e;
            font-weight: 700;
        }
        em {
            color: #d81b60;
            font-style: italic;
        }
        aside {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget {
            margin-bottom: 2.5rem;
        }
        .widget-title {
            font-size: 1.4rem;
            color: #1a237e;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffeb3b;
        }
        .search-box {
            display: flex;
        }
        .search-box input {
            flex: 1;
            padding: 0.9rem;
            border: 2px solid #c5cae9;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-box button {
            background-color: #3949ab;
            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-color: #283593;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #ffd600;
            margin: 1rem 0;
            cursor: pointer;
        }
        .stars span {
            margin: 0 3px;
            transition: transform 0.2s;
        }
        .stars span:hover,
        .stars span.active {
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #c5cae9;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            margin-bottom: 1rem;
            resize: vertical;
            min-height: 120px;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group input {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #c5cae9;
            border-radius: 6px;
            font-size: 1rem;
        }
        .submit-btn {
            background: linear-gradient(90deg, #3949ab, #5c6bc0);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            width: 100%;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, #283593, #3949ab);
            box-shadow: 0 4px 12px rgba(57, 73, 171, 0.4);
        }
        .longtail-links {
            background-color: #1a237e;
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        .links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 6px;
            transition: transform 0.3s, background 0.3s;
        }
        .web-link:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .web-link a {
            color: #e3f2fd;
            text-decoration: none;
            display: block;
        }
        .web-link a:hover {
            color: #ffeb3b;
            text-decoration: underline;
        }
        .site-footer {
            background-color: #0d153a;
            color: #b0bec5;
            padding: 2.5rem 0;
            text-align: center;
        }
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        .copyright {
            font-size: 0.95rem;
            border-top: 1px solid #3949ab;
            padding-top: 1.5rem;
            width: 100%;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            article, aside { padding: 1.5rem; }
            .content-grid { gap: 1.5rem; }
        }