* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #FF6B35;
            --secondary-color: #004E89;
            --accent-color: #00A5CF;
            --dark-bg: #1A1A2E;
            --light-bg: #F8F9FA;
            --text-dark: #2D3047;
            --text-light: #FFFFFF;
            --gray-border: #E1E5EB;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--light-bg);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark-bg) 0%, #16213E 100%);
            color: var(--text-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent-color);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .nav-links a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 15px;
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-links a:hover {
            background-color: rgba(255, 107, 53, 0.2);
            color: var(--primary-color);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
            background: none;
            border: none;
            padding: 5px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: var(--text-light);
            border-radius: 2px;
            transition: var(--transition);
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: rgba(0, 0, 0, 0.1);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--accent-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .hero {
            background: linear-gradient(rgba(26, 26, 46, 0.9), rgba(26, 26, 46, 0.9)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: var(--text-light);
            padding: 80px 0;
            text-align: center;
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        .content-area {
            background-color: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background-color: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        h1, h2, h3 {
            color: var(--dark-bg);
            margin-bottom: 20px;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-left: 5px solid var(--primary-color);
            padding-left: 15px;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--secondary-color);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--gray-border);
            margin-top: 40px;
        }
        h3 {
            font-size: 1.7rem;
            color: var(--primary-color);
            margin-top: 30px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fdfcfb 0%, #f5f7fa 100%);
            border-left: 4px solid var(--accent-color);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        .warning-box {
            background-color: #FFF3CD;
            border-left: 4px solid #FFC107;
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box {
            background-color: #D1ECF1;
            border-left: 4px solid var(--accent-color);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .image-container {
            margin: 30px 0;
            text-align: center;
        }
        .article-img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }
        .article-img:hover {
            transform: scale(1.02);
        }
        .img-caption {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .search-form, .comment-form, .rating-form {
            background-color: var(--light-bg);
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
            border: 1px solid var(--gray-border);
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--text-dark);
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--gray-border);
            border-radius: 6px;
            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(0, 165, 207, 0.2);
        }
        button, .btn {
            background: linear-gradient(135deg, var(--primary-color) 0%, #FF8E53 100%);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        button:hover, .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255, 107, 53, 0.3);
        }
        .btn-secondary {
            background: linear-gradient(135deg, var(--secondary-color) 0%, #0066A8 100%);
        }
        .rating-container {
            display: flex;
            align-items: center;
            gap: 15px;
            flex-wrap: wrap;
            margin: 20px 0;
        }
        .star-rating {
            display: flex;
            gap: 5px;
        }
        .star-rating i {
            color: #FFD700;
            font-size: 1.8rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .long-tail-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 40px 0;
        }
        .web-link {
            background-color: white;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .web-link a:hover {
            color: var(--primary-color);
        }
        footer {
            background-color: var(--dark-bg);
            color: var(--text-light);
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            opacity: 0.8;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .hero h1 {
                font-size: 2.8rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: var(--dark-bg);
                flex-direction: column;
                padding: 20px;
                gap: 15px;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
                z-index: 999;
            }
            .nav-links.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .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);
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .content-area {
                padding: 25px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 480px) {
            .hero {
                padding: 50px 0;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            .long-tail-links {
                grid-template-columns: 1fr;
            }
        }
        .text-bold {
            font-weight: 800;
            color: var(--primary-color);
        }
        .text-highlight {
            background-color: rgba(255, 107, 53, 0.1);
            padding: 2px 6px;
            border-radius: 3px;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .divider {
            height: 1px;
            background-color: var(--gray-border);
            margin: 40px 0;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }
        .meta-info {
            display: flex;
            gap: 20px;
            color: #666;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .meta-info i {
            color: var(--accent-color);
        }
        .toc {
            background-color: var(--light-bg);
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
            border-left: 4px solid var(--secondary-color);
        }
        .toc h3 {
            margin-top: 0;
            color: var(--secondary-color);
        }
        .toc ul {
            list-style-type: none;
            padding-left: 20px;
        }
        .toc li {
            margin-bottom: 10px;
        }
        .toc a {
            color: var(--text-dark);
            text-decoration: none;
            transition: var(--transition);
        }
        .toc a:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        .stagger-delay-1 { animation-delay: 0.1s; }
        .stagger-delay-2 { animation-delay: 0.2s; }
        .stagger-delay-3 { animation-delay: 0.3s; }