* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        :root {
            --primary: #2e5bff;
            --primary-dark: #1e4bd1;
            --secondary: #00c853;
            --dark: #1a1f36;
            --light: #f8fafc;
            --gray: #64748b;
            --gray-light: #e2e8f0;
            --border-radius: 12px;
            --shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f9fafb;
            color: var(--dark);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .text-primary { color: var(--primary); }
        .bold { font-weight: 700; }
        .emoji-space { margin-right: 8px; }
        .section-padding { padding: 80px 0; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-3 { margin-top: 3rem; }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: var(--primary-dark);
        }
        .my-logo i {
            font-size: 2.2rem;
        }
        .nav-desktop {
            display: flex;
            gap: 32px;
        }
        @media (max-width: 992px) {
            .nav-desktop { display: none; }
        }
        .nav-link {
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
            padding: 8px 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--primary);
            transition: var(--transition);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--dark);
            cursor: pointer;
        }
        @media (max-width: 992px) {
            .hamburger-btn { display: block; }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: white;
            padding: 20px;
            box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            z-index: 999;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 15px;
            border-bottom: 1px solid var(--gray-light);
        }
        .breadcrumb {
            padding: 16px 24px;
            background-color: var(--light);
            font-size: 0.9rem;
            border-bottom: 1px solid var(--gray-light);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            flex: 1;
        }
        .article-hero {
            background: linear-gradient(135deg, #1a1f36 0%, #2e5bff 100%);
            color: white;
            padding: 60px 0;
            text-align: center;
            margin-bottom: 40px;
        }
        .article-hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            .article-hero h1 { font-size: 2.5rem; }
        }
        .article-hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
            opacity: 0.9;
        }
        .last-updated {
            display: inline-block;
            background: rgba(255,255,255,0.15);
            padding: 8px 16px;
            border-radius: 50px;
            margin-top: 20px;
            font-size: 0.9rem;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 60px;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        .article-content {
            background: white;
            padding: 50px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        @media (max-width: 768px) {
            .article-content { padding: 30px 20px; }
        }
        .article-content h2 {
            font-size: 2.2rem;
            margin-top: 3rem;
            margin-bottom: 1.5rem;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--primary);
            color: var(--dark);
        }
        .article-content h3 {
            font-size: 1.8rem;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            color: var(--primary-dark);
        }
        .article-content h4 {
            font-size: 1.4rem;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            color: var(--dark);
        }
        .article-content p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2.5rem auto;
            display: block;
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .article-content a {
            color: var(--primary);
            text-decoration: none;
            border-bottom: 1px dotted currentColor;
            transition: var(--transition);
        }
        .article-content a:hover {
            color: var(--primary-dark);
            border-bottom-style: solid;
        }
        .highlight-box {
            background: linear-gradient(to right, #f0f9ff, #e6f7ff);
            border-left: 5px solid var(--primary);
            padding: 25px;
            margin: 2.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        @media (max-width: 992px) {
            .sidebar { order: -1; }
        }
        .sidebar-widget {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 14px 18px;
            border: 2px solid var(--gray-light);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: var(--gray-light);
            cursor: pointer;
            margin-bottom: 10px;
        }
        .star-rating .star {
            transition: var(--transition);
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #ffc107;
            transform: scale(1.1);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea {
            padding: 14px;
            border: 2px solid var(--gray-light);
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
        }
        .submit-btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 16px;
            border-radius: var(--border-radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            margin-top: 10px;
        }
        .submit-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(46, 91, 255, 0.3);
        }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: 60px 0 30px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 50px;
        }
        @media (max-width: 992px) {
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 576px) {
            .footer-grid { grid-template-columns: 1fr; }
        }
        .footer-widget h4 {
            font-size: 1.3rem;
            margin-bottom: 25px;
            color: #fff;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: var(--border-radius);
            margin-top: 20px;
        }
        friend-link a {
            color: var(--secondary);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #94a3b8;
            font-size: 0.9rem;
        }