* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #4a90e2;
            --secondary: #7ed6df;
            --accent: #ff9f43;
            --light: #f9f9f9;
            --dark: #2c3e50;
            --text: #333;
            --gray: #95a5a6;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f0f8ff;
            color: var(--text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 1.5rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 5px;
            transition: var(--transition);
        }
        nav a:hover, nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            background-color: #e9f5ff;
            padding: 1rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
            border-bottom: 1px solid #d1e7ff;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        .article-content {
            background: white;
            border-radius: 15px;
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            border-radius: 15px;
            padding: 1.8rem;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            color: var(--dark);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 5px solid var(--accent);
            padding-left: 1rem;
        }
        h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed var(--secondary);
        }
        h3 {
            color: var(--dark);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: #555;
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--dark);
            font-weight: 500;
            background: #f0faff;
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 4px solid var(--primary);
            margin-bottom: 2.5rem;
        }
        em {
            color: var(--primary);
            font-style: italic;
        }
        strong {
            color: var(--dark);
            font-weight: 700;
        }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -1.5rem;
            margin-bottom: 2.5rem;
            font-size: 0.95rem;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .link-list {
            background: #f8fdff;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .link-list h3 {
            margin-top: 0;
        }
        .link-list ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            list-style: none;
        }
        .link-list li {
            padding: 0.8rem;
            background: white;
            border-radius: 8px;
            border-left: 3px solid var(--secondary);
        }
        .form-section {
            background: #f9f9f9;
            padding: 2rem;
            border-radius: 12px;
            margin: 3rem 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        input, textarea, select {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
        }
        button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        button:hover {
            background: #3a80d2;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(74, 144, 226, 0.3);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover, .star.active {
            color: #ffc107;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.4rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .friend-links a {
            background: rgba(255,255,255,0.1);
            color: white;
            padding: 0.6rem 1.2rem;
            border-radius: 20px;
            text-decoration: none;
            transition: var(--transition);
        }
        .friend-links a:hover {
            background: var(--primary);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #bbb;
        }
        .highlight {
            background: linear-gradient(120deg, #ffecb3 0%, #ffecb3 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
        }
        .info-box {
            background: #e8f4fc;
            border-left: 5px solid var(--primary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .update-time {
            background: #fff8e1;
            padding: 1rem;
            border-radius: 8px;
            margin: 2rem 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 1.5rem;
            }
            nav ul {
                flex-direction: column;
                text-align: center;
                display: none;
                width: 100%;
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 20px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .link-list ul {
                grid-template-columns: 1fr;
            }
        }