* { 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;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a { color: #4a6ee0; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #2a4ec4; }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(135deg, #2c3e50, #1a2530);
            color: #fff;
            padding: 1rem 5%;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #00c6ff, #0072ff);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -0.5px;
        }
        .my-logo a { color: inherit; }
        .burger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #ecf0f1;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: #00c6ff;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #00c6ff;
            transition: width 0.3s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .breadcrumb {
            padding: 0.8rem 5%;
            background-color: #e9ecef;
            font-size: 0.9rem;
            color: #6c757d;
        }
        .breadcrumb a { color: #495057; }
        .container {
            flex: 1;
            width: 100%;
            max-width: 1280px;
            margin: 2rem auto;
            padding: 0 5%;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .container { grid-template-columns: 1fr; }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.05);
        }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #4a6ee0;
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #34495e;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #bdc3c7;
        }
        h3 {
            font-size: 1.6rem;
            color: #4a6ee0;
            margin: 2rem 0 0.8rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #7f8c8d;
            margin: 1.5rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            background: #e8f4fc;
            padding: 1.5rem;
            border-left: 5px solid #4a6ee0;
            border-radius: 0 10px 10px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            border-left: 4px solid #ffd700;
        }
        .update-time {
            font-style: italic;
            color: #95a5a6;
            text-align: right;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #ecf0f1;
        }
        .feature-img {
            width: 100%;
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
        }
        .feature-img img {
            width: 100%;
            height: auto;
            transition: transform 0.5s;
        }
        .feature-img img:hover {
            transform: scale(1.02);
        }
        .caption {
            text-align: center;
            font-size: 0.9rem;
            color: #7f8c8d;
            padding: 0.5rem;
        }
        aside {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget {
            margin-bottom: 2.5rem;
        }
        .widget h3 {
            font-size: 1.4rem;
            color: #2c3e50;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #4a6ee0;
        }
        .search-form input,
        .comment-form input,
        .comment-form textarea,
        .rating-form select {
            width: 100%;
            padding: 0.9rem;
            margin-bottom: 1rem;
            border: 1px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
        }
        .search-form button,
        .comment-form button,
        .rating-form button {
            width: 100%;
            padding: 0.9rem;
            background: linear-gradient(90deg, #4a6ee0, #2a4ec4);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover,
        .comment-form button:hover,
        .rating-form button:hover {
            background: linear-gradient(90deg, #2a4ec4, #1a3ca0);
        }
        .star-rating {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            font-size: 1.8rem;
            color: #ffd700;
        }
        .star-rating i {
            cursor: pointer;
            transition: color 0.2s;
        }
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 5% 2rem;
            margin-top: auto;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #00c6ff;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #bdc3c7;
        }
        .footer-links a:hover {
            color: #00c6ff;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 1rem;
        }
        friend-link a {
            color: #4a6ee0;
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .burger { display: block; }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active {
                max-height: 300px;
                margin-top: 1rem;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .container { padding: 0 1rem; }
            article { padding: 1.5rem; }
            aside { position: static; }
        }