* { 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%);
            background-attachment: fixed;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0;
            box-shadow: 0 0 30px rgba(0, 0, 0, 0.05);
        }
        h1, h2, h3, h4 { color: #1a365d; font-weight: 800; margin-bottom: 1rem; }
        h1 { font-size: 2.8rem; line-height: 1.2; border-bottom: 5px solid #f0b429; padding-bottom: 0.5rem; }
        h2 { font-size: 2.1rem; padding-top: 1.5rem; border-top: 2px dashed #cbd5e0; }
        h3 { font-size: 1.7rem; color: #2d3748; }
        h4 { font-size: 1.3rem; color: #4a5568; }
        p { margin-bottom: 1.5rem; text-align: justify; hyphens: auto; }
        a { color: #3182ce; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #f0b429; text-decoration: underline; }
        strong { color: #2d3748; }
        em { color: #718096; }
        .container { width: 95%; max-width: 1140px; margin: 0 auto; padding: 0 15px; }
        .main-content { display: grid; grid-template-columns: 1fr 300px; gap: 3rem; padding: 2rem 0; }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .site-header {
            background: linear-gradient(90deg, #1a365d 0%, #2d3748 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-family: 'Arial Black', Impact, sans-serif;
            font-size: 2.2rem;
            color: #f0b429;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { font-size: 1.8rem; }
        .my-logo:hover { color: white; text-decoration: none; }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 0.8rem 1rem;
            border-radius: 5px;
            margin: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #4a5568; }
        .breadcrumb a:hover { color: #1a365d; }
        .breadcrumb .separator { margin: 0 8px; color: #a0aec0; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #cbd5e0;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover { color: #f0b429; }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #f0b429;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 70px;
                right: -100%;
                width: 80%;
                height: calc(100vh - 70px);
                background: #1a365d;
                transition: right 0.5s ease;
                overflow-y: auto;
                padding: 2rem;
                box-shadow: -5px 0 15px rgba(0,0,0,0.2);
            }
            .main-nav.active { right: 0; }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
        }
        .intro {
            font-size: 1.2rem;
            background: #f7fafc;
            padding: 1.5rem;
            border-left: 5px solid #3182ce;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        .featured-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem 0;
            border: 5px solid #e2e8f0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }
        .featured-img:hover { transform: scale(1.01); }
        .section { margin-bottom: 3rem; }
        .highlight-box {
            background: linear-gradient(to right, #feecb9, #fed89a);
            border-left: 6px solid #f0b429;
            padding: 1.5rem;
            border-radius: 0 10px 10px 0;
            margin: 2rem 0;
        }
        .sidebar {
            background: white;
            padding: 1.8rem;
            border-radius: 15px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .widget { margin-bottom: 2.5rem; }
        .widget-title {
            font-size: 1.4rem;
            padding-bottom: 0.7rem;
            margin-bottom: 1.2rem;
            border-bottom: 3px solid #e2e8f0;
            color: #1a365d;
        }
        .search-form { display: flex; margin-bottom: 1.5rem; }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1rem;
            border: 2px solid #cbd5e0;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .search-input:focus { border-color: #3182ce; }
        .search-button {
            background: #3182ce;
            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-button:hover { background: #2c5282; }
        .rating-widget .stars {
            display: flex;
            justify-content: center;
            gap: 0.3rem;
            margin-bottom: 1rem;
        }
        .rating-widget .star {
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
            transition: color 0.2s, transform 0.2s;
        }
        .rating-widget .star:hover,
        .rating-widget .star.active { color: #f0b429; transform: scale(1.1); }
        .rating-form { display: none; }
        .rating-form.active { display: block; }
        .rating-form input, .rating-form textarea {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 5px;
        }
        .rating-submit {
            background: #38a169;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 5px;
            cursor: pointer;
            width: 100%;
            font-weight: bold;
            transition: background 0.3s;
        }
        .rating-submit:hover { background: #2f855a; }
        .comments-list .comment {
            border-bottom: 1px solid #e2e8f0;
            padding: 1.2rem 0;
        }
        .comment-author { font-weight: bold; color: #2d3748; }
        .comment-date { font-size: 0.85rem; color: #718096; margin-left: 1rem; }
        .comment-form input, .comment-form textarea {
            width: 100%;
            padding: 0.9rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 5px;
        }
        .comment-submit {
            background: #1a365d;
            color: white;
            border: none;
            padding: 0.9rem 1.5rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .comment-submit:hover { background: #2d3748; }
        .site-footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            border-top-left-radius: 20px;
            border-top-right-radius: 20px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-widget h4 {
            color: #f0b429;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a { color: #a0aec0; }
        .footer-links a:hover { color: #f0b429; }
        friend-link {
            display: block;
            background: #2d3748;
            padding: 1.5rem;
            border-radius: 10px;
            margin-top: 2rem;
        }
        friend-link h4 { color: #f0b429; margin-bottom: 1rem; }
        friend-link .link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
        }
        friend-link a {
            display: block;
            padding: 0.8rem;
            background: #4a5568;
            color: #e2e8f0;
            border-radius: 5px;
            text-align: center;
            transition: all 0.3s;
        }
        friend-link a:hover {
            background: #f0b429;
            color: #1a202c;
            text-decoration: none;
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        .update-time {
            font-size: 0.9rem;
            color: #718096;
            text-align: right;
            margin-bottom: 1.5rem;
            font-style: italic;
        }
        .tag {
            display: inline-block;
            background: #e2e8f0;
            color: #4a5568;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #1a365d;
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            text-decoration: none;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
            opacity: 0;
            transition: opacity 0.3s, background 0.3s;
            z-index: 99;
        }
        .back-to-top.visible { opacity: 1; }
        .back-to-top:hover { background: #f0b429; color: #1a365d; }