:root {
            --primary-color: #6a11cb;
            --secondary-color: #2575fc;
            --accent-color: #ff6b6b;
            --dark-bg: #121826;
            --light-bg: #f8f9fa;
            --text-dark: #2d3748;
            --text-light: #e2e8f0;
            --border-color: #4a5568;
            --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            min-height: 100vh;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(18, 24, 38, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            font-size: 2rem;
        }
        .my-logo:hover {
            transform: scale(1.05);
            transition: var(--transition);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            transition: var(--transition);
        }
        .nav-links a:hover,
        .nav-links a.active {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            color: white;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background: var(--text-light);
            border-radius: 2px;
            transition: var(--transition);
        }
        .breadcrumb {
            padding: 1rem 0;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #63b3ed;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            background: var(--light-bg);
            border-radius: 20px;
            margin: 2rem auto;
            padding: 3rem;
            box-shadow: var(--shadow);
        }
        article {
            max-width: 900px;
            margin: 0 auto;
        }
        h1 {
            font-size: 3rem;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            color: var(--primary-color);
            border-left: 5px solid var(--accent-color);
            padding-left: 1rem;
            margin: 3rem 0 1.5rem;
            font-size: 2.2rem;
        }
        h3 {
            color: var(--secondary-color);
            margin: 2.5rem 0 1rem;
            font-size: 1.8rem;
        }
        h4 {
            color: var(--text-dark);
            margin: 2rem 0 1rem;
            font-size: 1.4rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(120deg, rgba(255,107,107,0.1) 0%, rgba(106,17,203,0.1) 100%);
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .content-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 15px;
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .content-img:hover {
            transform: scale(1.02);
        }
        .internal-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 3rem 0;
        }
        .internal-links a {
            background: white;
            padding: 1rem;
            border-radius: 10px;
            text-decoration: none;
            color: var(--text-dark);
            border: 2px solid #e2e8f0;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .internal-links a:hover {
            border-color: var(--primary-color);
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .internal-links i {
            color: var(--primary-color);
        }
        .user-interaction {
            background: white;
            border-radius: 15px;
            padding: 2rem;
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .interaction-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .interaction-form input,
        .interaction-form textarea,
        .interaction-form select {
            padding: 12px;
            border: 2px solid #e2e8f0;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .interaction-form input:focus,
        .interaction-form textarea:focus,
        .interaction-form select:focus {
            outline: none;
            border-color: var(--primary-color);
        }
        .btn {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .rating-stars i {
            color: #e2e8f0;
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .rating-stars i.active {
            color: #fbbf24;
        }
        .update-time {
            color: #718096;
            font-size: 0.9rem;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid #e2e8f0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        footer {
            background: var(--dark-bg);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
        }
        friend-link a {
            color: #63b3ed;
            text-decoration: none;
            padding: 0.5rem 0;
            display: block;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        friend-link a:hover {
            color: var(--accent-color);
            padding-left: 10px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            main { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--dark-bg);
                padding: 1rem;
                border-top: 1px solid var(--border-color);
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: flex;
            }
            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(6px, 6px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(6px, -6px);
            }
            .header-container {
                flex-wrap: wrap;
            }
            .internal-links {
                grid-template-columns: 1fr;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            main { padding: 1.5rem; margin: 1rem; }
            .container { padding: 0 15px; }
        }