:root {
            --primary-dark: #1a2a3a;
            --primary-accent: #e63946;
            --secondary-accent: #457b9d;
            --light-bg: #f8f9fa;
            --dark-text: #2d3748;
            --light-text: #e2e8f0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            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: var(--dark-text);
            background-color: var(--light-bg);
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary-accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-accent);
            text-decoration: underline;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #0f172a 100%);
            color: var(--light-text);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(90deg, #f72585, #4cc9f0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: var(--light-text);
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: #fff;
            text-decoration: none;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-accent);
            transition: width 0.3s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
            background: none;
            border: none;
            padding: 0.5rem;
        }
        .hamburger span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--light-text);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -6px);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 1.5rem;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #6c757d;
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .main-container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1.5rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 5px solid var(--primary-accent);
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--secondary-accent);
            margin: 2.5rem 0 1rem 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #e2e8f0;
        }
        h3 {
            font-size: 1.4rem;
            color: var(--primary-dark);
            margin: 2rem 0 0.8rem 0;
        }
        h4 {
            font-size: 1.1rem;
            color: #4a5568;
            margin: 1.5rem 0 0.5rem 0;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: #4a5568;
            font-weight: 500;
            padding: 1rem;
            background-color: #f1faee;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--secondary-accent);
        }
        strong {
            color: var(--primary-dark);
        }
        .featured-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: transform 0.5s ease;
        }
        .featured-img:hover {
            transform: scale(1.01);
        }
        .content-block {
            margin-bottom: 2.5rem;
        }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            border-left: 5px solid #9c27b0;
        }
        .related-links {
            background-color: #f8f9fa;
            padding: 1.2rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
        }
        .related-links h4 {
            margin-top: 0;
        }
        .related-links ul {
            list-style: square inside;
            padding-left: 1rem;
        }
        .related-links li {
            margin-bottom: 0.5rem;
        }
        .update-time {
            font-size: 0.9rem;
            color: #718096;
            text-align: right;
            font-style: italic;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #e2e8f0;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.2rem;
            margin-top: 0;
            color: var(--primary-accent);
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #e2e8f0;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid #cbd5e0;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--secondary-accent);
            box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, var(--secondary-accent), var(--primary-dark));
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            text-align: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, var(--primary-dark), var(--secondary-accent));
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.1);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 1.8rem;
            cursor: pointer;
            margin: 0.5rem 0;
        }
        .star-rating span {
            color: #e2e8f0;
            transition: var(--transition);
        }
        .star-rating span:hover,
        .star-rating span.active {
            color: #fbbf24;
        }
        .site-footer {
            background: var(--primary-dark);
            color: var(--light-text);
            padding: 3rem 1.5rem 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h4 {
            color: #fff;
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #cbd5e0;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin-bottom: 1rem;
            border-left: 3px solid var(--secondary-accent);
        }
        friend-link a {
            color: #90cdf4;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .main-nav {
                width: 100%;
                order: 3;
                margin-top: 1rem;
                display: none;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .main-nav a {
                display: block;
                padding: 1rem 0;
            }
            .hamburger {
                display: flex;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            article {
                padding: 1.5rem;
            }
        }
        @media (max-width: 576px) {
            .header-container, .breadcrumb, .main-container, .footer-container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            .lead {
                font-size: 1.1rem;
            }
        }