:root {
            --primary: #00a8e1;
            --secondary: #ff6b35;
            --accent: #9c4dcc;
            --dark: #2c3e50;
            --light: #ecf0f1;
            --gray: #95a5a6;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f9f9f9;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark) 0%, #1a2530 100%);
            color: white;
            padding: 1.2rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(to right, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -0.5px;
        }
        .my-logo a {
            background: none;
            color: inherit;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: var(--light);
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--secondary);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: var(--transition);
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: var(--dark);
            flex-direction: column;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin: 1rem 0;
        }
        .mobile-nav a {
            color: white;
            font-size: 1.1rem;
            display: block;
            padding: 0.5rem;
            border-left: 3px solid transparent;
        }
        .mobile-nav a:hover {
            border-left-color: var(--secondary);
            padding-left: 1rem;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #eee;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: var(--gray);
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        @media (max-width: 768px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--primary);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--accent);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: #555;
            font-weight: 500;
            border-left: 4px solid var(--primary);
            padding-left: 1.5rem;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #ffc107;
            margin: 2rem 0;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: var(--shadow);
            margin: 1.5rem 0;
            display: block;
        }
        .caption {
            font-size: 0.9rem;
            color: var(--gray);
            text-align: center;
            margin-top: -0.5rem;
            margin-bottom: 2rem;
        }
        .link-list {
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .link-list ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .link-list li {
            padding: 0.5rem 0;
        }
        .link-list a {
            color: var(--dark);
            font-weight: 600;
        }
        .link-list a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .update-time {
            background-color: var(--light);
            padding: 1rem;
            border-radius: 6px;
            text-align: center;
            font-size: 0.9rem;
            color: #666;
            margin-top: 3rem;
            border: 1px dashed var(--gray);
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .widget h3 i {
            color: var(--primary);
        }
        .search-form input[type="text"] {
            width: 100%;
            padding: 0.9rem;
            border: 2px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            margin-bottom: 1rem;
        }
        .search-form button {
            width: 100%;
            padding: 0.9rem;
            background: linear-gradient(to right, var(--primary), var(--accent));
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            opacity: 0.9;
            transform: translateY(-2px);
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 2rem;
            color: #ffc107;
            margin: 1rem 0;
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-form select,
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
        }
        .comment-form textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(to right, var(--secondary), #ff8c42);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-btn:hover {
            opacity: 0.9;
            transform: scale(1.02);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 6px;
            margin: 1rem 0;
            border-left: 4px solid var(--primary);
        }
        friend-link a {
            color: white;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .header-container { padding: 0 1rem; }
            article { padding: 1.5rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
        }
        @media print {
            header, aside, footer, .breadcrumb, .update-time,
            .search-form, .rating-form, .comment-form { display: none; }
            main { grid-template-columns: 1fr; }
            article { box-shadow: none; }
            a { color: #000; text-decoration: underline; }
        }