:root {
            --primary-bg: #0a0e17;
            --secondary-bg: #111827;
            --accent-color: #8b5cf6;
            --accent-hover: #a78bfa;
            --text-primary: #f1f5f9;
            --text-secondary: #cbd5e1;
            --border-color: #334155;
            --card-bg: #1e293b;
            --success-color: #10b981;
            --warning-color: #f59e0b;
            --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
            --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;
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--secondary-bg);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(8px);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #8b5cf6, #3b82f6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -0.5px;
        }
        .logo span {
            color: #f1f5f9;
            -webkit-text-fill-color: #f1f5f9;
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .nav-link {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-color);
            transition: width 0.3s ease;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--accent-color);
        }
        .breadcrumb span {
            margin: 0 0.5rem;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 3rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: var(--card-bg);
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 2px solid var(--accent-color);
            padding-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 1rem;
            background: linear-gradient(90deg, #8b5cf6, #60a5fa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        h2 {
            font-size: 2rem;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-color);
            color: var(--accent-hover);
        }
        h3 {
            font-size: 1.5rem;
            margin: 2rem 0 1rem;
            color: var(--text-primary);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(139, 92, 246, 0.2), rgba(59, 130, 246, 0.2));
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .info-box {
            background-color: rgba(16, 185, 129, 0.1);
            border: 1px solid var(--success-color);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .warning-box {
            background-color: rgba(245, 158, 11, 0.1);
            border: 1px solid var(--warning-color);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: var(--card-bg);
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.25rem;
            margin-bottom: 1rem;
            color: var(--accent-color);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        input, textarea, select {
            padding: 0.75rem 1rem;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background-color: var(--secondary-bg);
            color: var(--text-primary);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            padding: 0.75rem 1.5rem;
            border-radius: 8px;
            border: none;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }
        .btn-primary {
            background-color: var(--accent-color);
            color: white;
        }
        .btn-primary:hover {
            background-color: var(--accent-hover);
            transform: translateY(-2px);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #4b5563;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #f59e0b;
        }
        .featured-image {
            width: 100%;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border: 2px solid var(--border-color);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-secondary);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .tier-list {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            background-color: var(--secondary-bg);
            border-radius: 8px;
            overflow: hidden;
        }
        .tier-list th,
        .tier-list td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        .tier-list th {
            background-color: var(--card-bg);
            font-weight: 700;
            color: var(--accent-color);
        }
        .tier-list tr:hover {
            background-color: rgba(139, 92, 246, 0.05);
        }
        ul, ol {
            margin: 1.5rem 0;
            padding-left: 2rem;
        }
        li {
            margin-bottom: 0.75rem;
        }
        .longtail-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 4rem 0 2rem;
            padding: 2rem 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .web-link {
            background-color: var(--card-bg);
            padding: 1rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            background-color: var(--secondary-bg);
            box-shadow: var(--shadow);
        }
        .site-footer {
            background-color: var(--secondary-bg);
            padding: 3rem 0;
            text-align: center;
            border-top: 1px solid var(--border-color);
        }
        .copyright {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-top: 2rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--secondary-bg);
                flex-direction: column;
                padding: 2rem;
                gap: 1rem;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                box-shadow: var(--shadow);
                border-top: 1px solid var(--border-color);
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .header-container {
                padding: 0.75rem 0;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-3 {
            margin-top: 3rem;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .keyword {
            background-color: rgba(139, 92, 246, 0.2);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .tag {
            display: inline-block;
            background-color: var(--secondary-bg);
            padding: 0.4rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }