* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            max-width: 1920px;
            margin: 0 auto;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .site-header {
            background: linear-gradient(135deg, #0033a0 0%, #0051ba 100%);
            color: white;
            padding: 1rem 2rem;
            box-shadow: 0 4px 12px rgba(0, 51, 160, 0.2);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -1px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        .my-logo i {
            color: #ffd700;
        }
        .nav-primary {
            display: flex;
            gap: 1.8rem;
            align-items: center;
        }
        .nav-primary a {
            color: #e6f0ff;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s;
        }
        .nav-primary a:hover, .nav-primary a.active {
            color: #ffd700;
        }
        .nav-primary a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffd700;
            transition: width 0.3s;
        }
        .nav-primary a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #dee2e6;
        }
        .breadcrumb a {
            color: #0051ba;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #6c757d;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        @media (max-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
        }
        .sidebar {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            color: #0033a0;
            font-size: 2.8rem;
            margin-bottom: 1.2rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffd700;
            padding-bottom: 0.7rem;
        }
        h2 {
            color: #0051ba;
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #e9ecef;
        }
        h3 {
            color: #0066cc;
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: #0077e6;
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #0051ba;
            font-weight: 600;
            background: #f0f8ff;
            padding: 1.2rem;
            border-left: 5px solid #ffd700;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(120deg, #ffd70020 0%, #ffd70010 100%);
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 4px solid #ffd700;
            margin: 1.5rem 0;
        }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            margin: 2rem auto;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.008);
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 1.8rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        a.content-link {
            color: #d22b2b;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted #d22b2b;
            transition: all 0.2s;
        }
        a.content-link:hover {
            color: #a31621;
            border-bottom: 2px solid #a31621;
            background-color: #fff0f0;
        }
        strong {
            color: #0033a0;
        }
        em {
            color: #555;
        }
        .update-time {
            display: inline-block;
            background: #e9ecef;
            color: #495057;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .update-time i {
            color: #28a745;
            margin-right: 0.5rem;
        }
        .search-widget, .comment-widget, .rating-widget {
            margin-bottom: 2.5rem;
        }
        .widget-title {
            font-size: 1.3rem;
            color: #0051ba;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .widget-title i {
            color: #ffd700;
        }
        .search-box {
            display: flex;
        }
        .search-box input {
            flex: 1;
            padding: 0.9rem 1rem;
            border: 2px solid #ced4da;
            border-right: none;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .search-box input:focus {
            border-color: #0051ba;
        }
        .search-box button {
            background: #0051ba;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background: #0033a0;
        }
        .comment-form textarea, .comment-form input {
            width: 100%;
            padding: 0.9rem;
            margin-bottom: 1rem;
            border: 1px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
        }
        .comment-form button, .rating-form button {
            background: #28a745;
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .comment-form button:hover, .rating-form button:hover {
            background: #218838;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
            font-size: 1.8rem;
            color: #ffd700;
            cursor: pointer;
        }
        .stars i:hover {
            transform: scale(1.2);
            transition: transform 0.2s;
        }
        .site-footer {
            background: #1a1a2e;
            color: #e6e6e6;
            padding: 3rem 2rem 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        .footer-section h3 {
            color: #ffd700;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            border-bottom: 1px solid #333;
            padding-bottom: 0.5rem;
        }
        .footer-links a {
            color: #b3b3cc;
            text-decoration: none;
            display: block;
            margin-bottom: 0.8rem;
            transition: color 0.3s, padding-left 0.3s;
        }
        .footer-links a:hover {
            color: #ffd700;
            padding-left: 8px;
        }
        friend-link {
            display: block;
            background: #252547;
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 2rem;
        }
        friend-link h4 {
            color: #ffd700;
            margin-bottom: 1rem;
        }
        .friend-links a {
            color: #8a8aff;
            text-decoration: none;
            margin-right: 1.5rem;
            margin-bottom: 0.5rem;
            display: inline-block;
        }
        .friend-links a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #333;
            color: #999;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-primary {
                flex-direction: column;
                width: 100%;
                gap: 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
                margin-top: 1rem;
            }
            .nav-primary.active {
                max-height: 500px;
            }
            .nav-primary a {
                width: 100%;
                padding: 1rem 0;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hamburger {
                display: block;
                position: absolute;
                right: 2rem;
                top: 1.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .main-content, .article-body {
                padding: 1.5rem;
            }
            .sidebar {
                position: static;
            }
        }