* { 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%, #e4edf5 100%);
            background-attachment: fixed;
            min-height: 100vh;
        }
        a { color: #2980b9; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e74c3c; }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(90deg, #1a2980, #26d0ce);
            color: white;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(45deg, #ffd700, #ffec8b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo a { background: transparent; }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .nav-desktop a:hover {
            background: rgba(255,255,255,0.15);
            color: #ffd700;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #1a2980;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            color: white;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background: #ecf0f1;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #bdc3c7;
        }
        .breadcrumb a { color: #7f8c8d; }
        .breadcrumb span { color: #2c3e50; }
        .container {
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 1024px) {
            .container { grid-template-columns: 1fr; }
        }
        main { background: white; padding: 3rem; border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
        article h1 {
            font-size: 3rem;
            color: #1a2980;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 5px solid #ffd700;
            padding-bottom: 0.5rem;
        }
        article h2 {
            font-size: 2.2rem;
            color: #2c3e50;
            margin: 2.5rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 6px solid #26d0ce;
        }
        article h3 {
            font-size: 1.8rem;
            color: #34495e;
            margin: 2rem 0 1rem;
        }
        article h4 {
            font-size: 1.4rem;
            color: #5d6d7e;
            margin: 1.5rem 0 0.8rem;
        }
        article p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        article ul, article ol {
            margin-bottom: 1.5rem;
            padding-left: 2rem;
        }
        article li { margin-bottom: 0.5rem; }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
            border-left: 6px solid #9c27b0;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .card-image {
            width: 100%;
            max-width: 800px;
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: transform 0.5s;
        }
        .card-image:hover { transform: scale(1.01); }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #7f8c8d;
            margin-top: 0.5rem;
        }
        .keyword { font-weight: 800; color: #c0392b; background-color: #fdebd0; padding: 0 4px; border-radius: 3px; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .update-time {
            background: #2ecc71;
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            display: inline-block;
            margin-bottom: 2rem;
            font-weight: bold;
        }
        aside {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.08);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget { margin-bottom: 2.5rem; }
        .widget h3 {
            color: #1a2980;
            border-bottom: 3px solid #ffd700;
            padding-bottom: 0.5rem;
            margin-bottom: 1.2rem;
        }
        .search-form input[type="text"] {
            width: 100%;
            padding: 0.9rem;
            border: 2px solid #bdc3c7;
            border-radius: 8px;
            font-size: 1rem;
            margin-bottom: 0.8rem;
        }
        .search-form button {
            width: 100%;
            padding: 0.9rem;
            background: linear-gradient(90deg, #1a2980, #26d0ce);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: opacity 0.3s;
        }
        .search-form button:hover { opacity: 0.9; }
        .rating-widget .stars {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .rating-widget .star {
            font-size: 1.8rem;
            color: #ecf0f1;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-widget .star.active,
        .rating-widget .star:hover { color: #f1c40f; }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #bdc3c7;
            border-radius: 8px;
            font-family: inherit;
            margin-bottom: 1rem;
            resize: vertical;
            min-height: 120px;
        }
        .comment-form button {
            padding: 0.8rem 2rem;
            background: #e74c3c;
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
        }
        .related-links ul { list-style: none; padding-left: 0; }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-left: 1rem;
            border-left: 3px solid #3498db;
            transition: border-color 0.3s;
        }
        .related-links li:hover { border-left-color: #e74c3c; }
        footer {
            background: linear-gradient(90deg, #2c3e50, #34495e);
            color: #ecf0f1;
            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: 2rem; font-weight: 800; color: #ffd700; margin-bottom: 1rem; }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1.5rem 0;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: background 0.3s;
        }
        friend-link:hover { background: rgba(255,255,255,0.2); }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #5d6d7e;
            color: #bdc3c7;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            .container { padding: 0 1rem; }
            main { padding: 2rem 1.5rem; }
            article h1 { font-size: 2.2rem; }
            article h2 { font-size: 1.8rem; }
            article h3 { font-size: 1.5rem; }
            .footer-container { grid-template-columns: 1fr; text-align: center; }
        }