:root {
            --primary-dark: #1a1a2e;
            --primary-accent: #6a11cb;
            --secondary-accent: #2575fc;
            --text-light: #f0f8ff;
            --text-muted: #b0bec5;
            --card-bg: #16213e;
            --section-bg: #0f3460;
            --success: #00b894;
            --warning: #fdcb6e;
            --danger: #e17055;
            --border-radius: 12px;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            --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: 1.8;
            color: var(--text-light);
            background: linear-gradient(135deg, var(--primary-dark) 0%, #16213e 50%, #0f3460 100%);
            background-attachment: fixed;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary-accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--warning);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: rgba(10, 10, 20, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--primary-accent);
            padding: 15px 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.5rem;
            background: linear-gradient(to right, var(--primary-accent), var(--secondary-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 10px rgba(106, 17, 203, 0.3);
            letter-spacing: 1px;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .breadcrumb {
            margin: 15px 0;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--warning);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 15px;
            border-radius: var(--border-radius);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a:hover {
            background-color: rgba(106, 17, 203, 0.2);
            text-decoration: none;
            transform: translateY(-3px);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text-light);
        }
        .hero-section {
            text-align: center;
            padding: 60px 20px;
            background: linear-gradient(rgba(15, 52, 96, 0.9), rgba(22, 33, 62, 0.9)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80');
            background-size: cover;
            background-position: center;
            border-radius: var(--border-radius);
            margin: 30px 0;
            box-shadow: var(--shadow);
        }
        .hero-section h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            background: linear-gradient(to right, var(--warning), var(--danger));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .hero-section p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            color: var(--text-light);
        }
        .search-box {
            max-width: 600px;
            margin: 40px auto;
            background-color: var(--card-bg);
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .search-box h2 {
            margin-bottom: 20px;
            color: var(--warning);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 15px 20px;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--text-light);
            font-size: 1rem;
        }
        .search-form button {
            background: linear-gradient(to right, var(--primary-accent), var(--secondary-accent));
            color: white;
            border: none;
            padding: 0 30px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .search-form button:hover {
            opacity: 0.9;
            transform: scale(1.05);
        }
        .content-section {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        .main-content {
            background-color: var(--card-bg);
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background-color: var(--card-bg);
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            align-self: start;
        }
        h1, h2, h3, h4 {
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
            color: var(--text-light);
        }
        h1 {
            font-size: 2.8rem;
            border-left: 6px solid var(--primary-accent);
            padding-left: 20px;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--warning);
            border-bottom: 3px solid var(--section-bg);
            padding-bottom: 10px;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary-accent);
        }
        h4 {
            font-size: 1.4rem;
            color: var(--success);
        }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(106, 17, 203, 0.15);
            border-left: 4px solid var(--primary-accent);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            display: block;
            margin: 30px auto;
            border: 3px solid var(--section-bg);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-muted);
            margin-top: -20px;
            margin-bottom: 30px;
        }
        ul, ol {
            padding-left: 30px;
            margin-bottom: 1.5em;
        }
        li {
            margin-bottom: 10px;
        }
        .tag {
            display: inline-block;
            background-color: var(--section-bg);
            color: var(--text-light);
            padding: 5px 15px;
            border-radius: 50px;
            margin: 5px;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .tag:hover {
            background-color: var(--primary-accent);
            transform: translateY(-3px);
        }
        .interaction-section {
            background-color: var(--section-bg);
            padding: 40px;
            border-radius: var(--border-radius);
            margin: 50px 0;
            box-shadow: var(--shadow);
        }
        .interaction-section h2 {
            text-align: center;
            margin-bottom: 30px;
        }
        .form-group {
            margin-bottom: 25px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 15px;
            border-radius: var(--border-radius);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background-color: rgba(255, 255, 255, 0.05);
            color: var(--text-light);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary-accent);
            box-shadow: 0 0 10px rgba(106, 17, 203, 0.5);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: var(--text-muted);
            margin: 15px 0;
        }
        .rating-stars .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: var(--warning);
            transform: scale(1.2);
        }
        .btn-submit {
            background: linear-gradient(to right, var(--primary-accent), var(--secondary-accent));
            color: white;
            border: none;
            padding: 15px 40px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: bold;
            font-size: 1.1rem;
            display: block;
            margin: 30px auto 0;
            transition: var(--transition);
        }
        .btn-submit:hover {
            opacity: 0.9;
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }
        .site-footer {
            background-color: rgba(10, 10, 20, 0.98);
            padding: 50px 0 30px;
            margin-top: 60px;
            border-top: 2px solid var(--primary-accent);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: var(--warning);
            margin-bottom: 25px;
            font-size: 1.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 10px;
            padding: 10px 15px;
            background-color: rgba(255, 255, 255, 0.05);
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(106, 17, 203, 0.3);
            transform: translateX(10px);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .update-time {
            color: var(--success);
            font-weight: bold;
        }
        @media (max-width: 992px) {
            .content-section {
                grid-template-columns: 1fr;
            }
            .hero-section h1 {
                font-size: 2.8rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: rgba(10, 10, 20, 0.98);
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
            }
            .main-nav ul.active {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input,
            .search-form button {
                border-radius: var(--border-radius);
                width: 100%;
                margin-bottom: 10px;
            }
        }