* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ed 100%);
            color: #333;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #4a6ee0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff6b8b;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: #fff;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(90deg, #ff6b8b, #4a6ee0);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            letter-spacing: -1px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #4a6ee0;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #4a6ee0;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            background: #f0f2f5;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 10px;
            color: #888;
        }
        .main-content {
            flex: 1;
            padding: 40px 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 50px;
            padding-bottom: 30px;
            border-bottom: 2px dashed #d1d8e0;
        }
        .article-header h1 {
            font-size: 3.2rem;
            color: #2d3748;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .article-header .lead {
            font-size: 1.3rem;
            color: #4a5568;
            max-width: 800px;
            margin: 0 auto;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 25px;
            font-size: 0.95rem;
            color: #718096;
        }
        .content-section {
            margin-bottom: 60px;
            background: #fff;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.09);
        }
        h2 {
            font-size: 2.3rem;
            color: #2d3748;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 3px solid #4a6ee0;
        }
        h3 {
            font-size: 1.8rem;
            color: #4a5568;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: #5a6c7d;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            color: #444;
            text-align: justify;
        }
        .highlight {
            background: #fff9e6;
            border-left: 5px solid #ffcc00;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 10px 10px 0;
        }
        .inline-link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin: 25px 0;
            list-style: none;
        }
        .inline-link-list a {
            background: #eef2ff;
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .inline-link-list a:hover {
            background: #4a6ee0;
            color: white;
        }
        .feature-img {
            float: right;
            margin: 0 0 25px 30px;
            max-width: 450px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .clearfix::after {
            content: "";
            clear: both;
            display: table;
        }
        .interactive-panel {
            background: #f8fafc;
            border-radius: 16px;
            padding: 30px;
            margin: 40px 0;
            border: 2px solid #e2e8f0;
        }
        .interactive-panel h3 {
            margin-top: 0;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 20px;
        }
        .form-group {
            flex: 1;
            min-width: 250px;
        }
        input, textarea, select {
            width: 100%;
            padding: 15px;
            border: 2px solid #cbd5e0;
            border-radius: 10px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4a6ee0;
        }
        button, .btn {
            background: linear-gradient(90deg, #4a6ee0, #6b8cff);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #ff6b8b, #ff8fab);
            transform: scale(1.03);
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffcc00;
        }
        .site-footer {
            background: #2d3748;
            color: #cbd5e0;
            padding: 50px 0 30px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h4 {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 25px;
        }
        friend-link {
            display: block;
            margin: 10px 0;
            color: #a0aec0;
        }
        friend-link a {
            color: #a0aec0;
        }
        friend-link a:hover {
            color: #4a6ee0;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #4a5568;
            font-size: 0.95rem;
            color: #a0aec0;
        }
        @media (max-width: 992px) {
            .article-header h1 {
                font-size: 2.6rem;
            }
            h2 {
                font-size: 2rem;
            }
            .feature-img {
                float: none;
                margin: 25px auto;
                max-width: 100%;
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .header-inner {
                padding: 12px 0;
            }
            .my-logo {
                font-size: 2rem;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .content-section {
                padding: 20px;
            }
            .interactive-panel {
                padding: 20px;
            }
        }
        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 10px;
            }
            .search-form, .comment-form, .rating-form {
                flex-direction: column;
            }
            .form-group {
                min-width: 100%;
            }
        }