* { 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%, #e4e8f0 100%);
            min-height: 100vh;
            max-width: 100%;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        .header {
            background: linear-gradient(90deg, #1a237e 0%, #283593 50%, #3949ab 100%);
            color: white;
            padding: 1rem 2rem;
            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;
            max-width: 1400px;
            margin: 0 auto;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(to right, #ffd740, #ffab00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 1px;
        }
        .logo span { color: #ffd740; }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            padding: 0.5rem 1rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .nav-desktop a:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ffd740;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
        }
        .nav-mobile {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: #1a237e;
            flex-direction: column;
            padding: 1rem;
            gap: 1rem;
            display: none;
            z-index: 999;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            padding: 1rem;
            border-bottom: 1px solid #3949ab;
            font-weight: 600;
        }
        .nav-mobile a:hover { background: #283593; }
        .breadcrumb {
            padding: 1rem 2rem;
            background: #e8eaf6;
            font-size: 0.9rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        .breadcrumb a { color: #3949ab; }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb span { color: #666; }
        .container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
        }
        @media (max-width: 1024px) {
            .container { grid-template-columns: 1fr; }
        }
        .main-content {
            background: white;
            border-radius: 12px;
            padding: 3rem;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
        }
        article { margin-bottom: 3rem; }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid #ffd740;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2.5rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 5px solid #3949ab;
        }
        h3 {
            font-size: 1.5rem;
            color: #3949ab;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #5c6bc0;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.05rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #444;
            font-weight: 500;
            background: #f9f9ff;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #ffd740;
        }
        .highlight {
            background: linear-gradient(120deg, #e1f5fe 0%, #bbdefb 100%);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            border: 1px solid #90caf9;
        }
        .tip {
            background: #f1f8e9;
            border-left: 5px solid #8bc34a;
            padding: 1.2rem;
            margin: 1.5rem 0;
            font-style: italic;
        }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        b, strong { color: #1a237e; }
        .internal-link {
            color: #3949ab;
            font-weight: 600;
            border-bottom: 1px dotted #3949ab;
        }
        .internal-link:hover {
            color: #ff9800;
            border-bottom: 1px solid #ff9800;
        }
        .image-wrapper {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .image-wrapper img {
            border-radius: 10px;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            border: 1px solid #ddd;
        }
        .caption {
            font-size: 0.95rem;
            color: #666;
            margin-top: 0.5rem;
            font-style: italic;
        }
        .last-updated {
            text-align: right;
            font-size: 0.9rem;
            color: #777;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px dashed #ccc;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget h3 {
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            color: #1a237e;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form {
            display: flex;
            margin-bottom: 1rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.9rem;
            border: 2px solid #c5cae9;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-form button {
            background: #3949ab;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover { background: #283593; }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin-bottom: 0.5rem;
        }
        .stars .selected { color: #ffc107; }
        .rating-widget input, .rating-widget textarea {
            padding: 0.8rem;
            border: 1px solid #c5cae9;
            border-radius: 6px;
            font-family: inherit;
        }
        .rating-widget button {
            background: linear-gradient(to right, #00c853, #64dd17);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.2s;
        }
        .rating-widget button:hover { transform: scale(1.03); }
        .comment-list {
            max-height: 400px;
            overflow-y: auto;
            padding-right: 0.5rem;
        }
        .comment {
            background: #f9f9ff;
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            border-left: 3px solid #3949ab;
        }
        .comment-author {
            font-weight: bold;
            color: #1a237e;
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
        }
        .comment-date { font-size: 0.85rem; color: #777; }
        .comment-text { font-size: 0.95rem; }
        .footer {
            background: #1a237e;
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #ffd740;
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: #ffd740;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a { color: #c5cae9; }
        .footer-links a:hover { color: #ffd740; padding-left: 5px; }
        friend-link {
            display: block;
            padding: 1rem;
            background: rgba(255,255,255,0.05);
            border-radius: 6px;
            margin-bottom: 0.8rem;
            border-left: 3px solid #3949ab;
        }
        friend-link a { color: #bbdefb; }
        friend-link a:hover { color: #ffd740; }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            color: #c5cae9;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container, .breadcrumb, .container, .footer-container { padding: 1rem; }
            .main-content { padding: 2rem 1.5rem; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .widget { padding: 1.5rem; }
        }