* {
            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%);
            max-width: 100%;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            font-family: 'Georgia', serif;
            color: #1a365d;
            margin-bottom: 1.2rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 3.2rem;
            text-align: center;
            margin-top: 2rem;
            margin-bottom: 1.5rem;
            background: linear-gradient(90deg, #d4af37, #b8860b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.05);
        }
        h2 {
            font-size: 2.4rem;
            border-left: 6px solid #d4af37;
            padding-left: 1rem;
            margin-top: 3.5rem;
            clear: both;
        }
        h3 {
            font-size: 1.8rem;
            color: #2d3748;
            margin-top: 2.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #e2e8f0;
        }
        h4 {
            font-size: 1.4rem;
            color: #4a5568;
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.8rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
        }
        .site-header {
            background: linear-gradient(90deg, #1a237e, #283593);
            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;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: #ffd700;
            font-family: 'Arial Black', sans-serif;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            font-size: 2.5rem;
            animation: spin 8s linear infinite;
        }
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        .main-nav {
            display: flex;
            gap: 2.5rem;
            align-items: center;
        }
        .main-nav a {
            color: #e2e8f0;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: #ffd700;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffd700;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 2rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background: #edf2f7;
            padding: 1rem 2rem;
            margin-top: 1rem;
            border-radius: 8px;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: #4a5568;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
            color: #2d3748;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 3.5rem;
            margin: 3rem auto;
        }
        .article-content {
            background: white;
            padding: 3rem;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .sidebar {
            background: white;
            padding: 2.5rem;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .search-widget {
            margin-bottom: 2.5rem;
        }
        .search-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .search-form input {
            padding: 1rem 1.2rem;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .search-form input:focus {
            outline: none;
            border-color: #d4af37;
            box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
        }
        .search-form button {
            padding: 1rem 1.5rem;
            background: linear-gradient(90deg, #d4af37, #b8860b);
            color: white;
            border: none;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .search-form button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(212, 175, 55, 0.4);
        }
        .rating-widget, .comment-widget {
            margin-bottom: 2.5rem;
            padding-top: 1.5rem;
            border-top: 2px solid #f1f5f9;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin: 1.2rem 0;
            font-size: 2rem;
            color: #ffd700;
            cursor: pointer;
        }
        .star-rating i:hover {
            transform: scale(1.2);
            transition: transform 0.2s;
        }
        .comment-form textarea {
            width: 100%;
            padding: 1.2rem;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            min-height: 150px;
            font-family: inherit;
            margin-bottom: 1.2rem;
            resize: vertical;
        }
        .submit-btn {
            padding: 1rem 2rem;
            background: linear-gradient(90deg, #2d3748, #4a5568);
            color: white;
            border: none;
            border-radius: 10px;
            font-weight: 700;
            cursor: pointer;
            width: 100%;
            transition: background 0.3s;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, #4a5568, #2d3748);
        }
        .highlight {
            background: linear-gradient(120deg, #fff9c4 0%, #fff9c4 100%);
            padding: 2rem;
            border-radius: 12px;
            border-left: 6px solid #d4af37;
            margin: 2.5rem 0;
        }
        .feature-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            margin: 2.5rem auto;
            display: block;
            transition: transform 0.5s ease;
        }
        .feature-image:hover {
            transform: scale(1.02);
        }
        .internal-links {
            background: #f8f9fa;
            padding: 1.8rem;
            border-radius: 12px;
            margin: 2.5rem 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .internal-links a {
            color: #2d3748;
            text-decoration: none;
            padding: 0.8rem 1.2rem;
            background: white;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: all 0.3s;
            border: 1px solid #e2e8f0;
        }
        .internal-links a:hover {
            background: #d4af37;
            color: white;
            transform: translateX(5px);
            border-color: #d4af37;
        }
        .update-time {
            font-size: 0.95rem;
            color: #718096;
            font-style: italic;
            text-align: right;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #e2e8f0;
        }
        .site-footer {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            padding: 4rem 2rem 2rem;
            margin-top: 5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            max-width: 1280px;
            margin: 0 auto;
        }
        .friend-links-section {
            grid-column: 1 / -1;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            border-radius: 8px;
            transition: all 0.3s;
        }
        friend-link a {
            color: #ffd700;
            text-decoration: none;
            font-weight: 600;
        }
        friend-link:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 3rem;
            margin-top: 3rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.95rem;
            color: #cbd5e0;
            grid-column: 1 / -1;
        }
        @media (max-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .sidebar {
                position: static;
                order: -1;
            }
            h1 {
                font-size: 2.8rem;
            }
            h2 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
                gap: 1.5rem;
            }
            .main-nav {
                flex-direction: column;
                width: 100%;
                gap: 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active {
                max-height: 500px;
                padding-top: 1.5rem;
            }
            .main-nav a {
                width: 100%;
                padding: 1rem 0;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 2rem;
            }
            .article-content {
                padding: 2rem 1.5rem;
            }
            .container {
                padding: 0 1.5rem;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 2rem;
            }
            .internal-links {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .feature-image {
                margin: 1.5rem 0;
            }
            .highlight {
                padding: 1.5rem;
            }
        }
        .text-bold {
            font-weight: 800;
            color: #2d3748;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.5rem;
        }
        .clearfix::after {
            content: "";
            display: table;
            clear: both;
        }