* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #4a6ee0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #2a4ec4;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            border: 0;
        }
        .site-header {
            background: linear-gradient(135deg, #1a237e 0%, #4a6ee0 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;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #ffcc00;
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .main-nav {
            display: flex;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 1.8rem;
            align-items: center;
        }
        .nav-list a {
            color: #e3f2fd;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-list a:hover {
            color: #ffcc00;
            text-decoration: none;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            background: #ffcc00;
            bottom: -5px;
            left: 0;
            transition: width 0.3s ease;
        }
        .nav-list a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: #1a237e;
            flex-direction: column;
            padding: 1rem 0;
            box-shadow: 0 10px 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            padding: 0.8rem 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .mobile-nav a:hover {
            background: rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb a {
            color: #6c757d;
        }
        .breadcrumb span {
            color: #495057;
        }
        .breadcrumb i {
            margin: 0 0.5rem;
            color: #adb5bd;
        }
        .main-content {
            flex: 1;
            padding: 2rem 0 4rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2.5rem 0 1.2rem;
            padding-left: 0.5rem;
            border-left: 5px solid #4a6ee0;
        }
        h3 {
            font-size: 1.6rem;
            color: #3949ab;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #5c6bc0;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .intro {
            font-size: 1.25rem;
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2.5rem;
            border-left: 4px solid #4a6ee0;
        }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border: 1px solid #bbdefb;
            padding: 1.8rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .feature-img {
            width: 100%;
            border-radius: 10px;
            margin: 2.5rem auto;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            border: 5px solid #fff;
            outline: 1px solid #ddd;
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        blockquote {
            border-left: 5px solid #ffcc00;
            padding-left: 1.5rem;
            margin: 2rem 0;
            color: #555;
            font-style: italic;
            background: #fffde7;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        strong {
            color: #1a237e;
            font-weight: 700;
        }
        .update-time {
            background: #e8f5e9;
            color: #2e7d32;
            padding: 0.8rem;
            border-radius: 6px;
            margin: 2rem 0;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: #1a237e;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #ddd;
        }
        .search-box {
            display: flex;
        }
        .search-box input {
            flex: 1;
            padding: 0.9rem;
            border: 2px solid #4a6ee0;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-box button {
            background: #4a6ee0;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background: #2a4ec4;
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            margin: 0.5rem 0;
        }
        .stars label {
            cursor: pointer;
            transition: color 0.2s;
        }
        .stars input {
            display: none;
        }
        .stars input:checked ~ label,
        .stars label:hover,
        .stars label:hover ~ label {
            color: #ffcc00;
        }
        .rating-widget button, .comment-form button {
            background: linear-gradient(to right, #4a6ee0, #6a8bec);
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .rating-widget button:hover, .comment-form button:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(74, 110, 224, 0.4);
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            min-height: 120px;
            resize: vertical;
            margin-bottom: 1rem;
        }
        .comment-form input {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            margin-bottom: 1rem;
        }
        .quick-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .quick-links li {
            margin-bottom: 0.8rem;
            padding: 0.8rem;
            background: #f8f9fa;
            border-radius: 6px;
            border-left: 4px solid #4a6ee0;
            transition: transform 0.2s;
        }
        .quick-links li:hover {
            transform: translateX(5px);
            background: #e3f2fd;
        }
        .site-footer {
            background: #1a237e;
            color: #e3f2fd;
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h4 {
            color: #ffcc00;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.6rem 1.2rem;
            border-radius: 6px;
            font-size: 0.9rem;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: rgba(255,204,0,0.2);
            color: #ffcc00;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.2);
            font-size: 0.9rem;
            color: #a5b4fc;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            article {
                padding: 1.5rem;
            }
            .content-grid {
                gap: 2rem;
            }
        }