:root {
            --primary: #ff4655;
            --primary-dark: #d43a47;
            --secondary: #1c1e26;
            --accent: #0fcc45;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --container-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #f5f7fa;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul, ol {
            list-style-position: inside;
            margin-left: 1rem;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .text-primary { color: var(--primary); }
        .text-accent { color: var(--accent); }
        .bold { font-weight: 700; }
        .highlight {
            background: linear-gradient(120deg, rgba(255,70,85,0.1) 0%, rgba(255,70,85,0) 100%);
            padding: 2px 6px;
            border-radius: 4px;
        }
        .emoji { font-size: 1.2em; }
        header {
            background: var(--secondary);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-top {
            padding: 15px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary), #ff6b7a);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: var(--primary); }
        .desktop-nav ul {
            display: flex;
            gap: 25px;
        }
        .desktop-nav a {
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--primary);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100vh;
            background: var(--secondary);
            padding: 80px 30px 30px;
            transition: right 0.5s ease;
            z-index: 999;
            box-shadow: -5px 0 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            right: 0;
        }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .mobile-nav a {
            font-size: 1.2rem;
            padding: 10px;
            border-radius: var(--border-radius);
            display: block;
        }
        .mobile-nav a:hover {
            background: rgba(255,255,255,0.1);
            color: var(--primary);
        }
        .close-menu {
            position: absolute;
            top: 25px;
            right: 25px;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.7);
            z-index: 998;
        }
        .overlay.active { display: block; }
        .breadcrumb {
            padding: 15px 0;
            background: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 10px;
            color: var(--gray);
        }
        .breadcrumb a:hover { color: var(--primary); }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .content-area {
            background: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary);
        }
        .sidebar ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .sidebar li {
            margin-bottom: 12px;
        }
        .sidebar a {
            display: block;
            padding: 10px 15px;
            background: #f8f9fa;
            border-radius: 6px;
            border-left: 3px solid var(--primary);
        }
        .sidebar a:hover {
            background: #e9ecef;
            border-left-color: var(--accent);
            transform: translateX(5px);
        }
        .article-header {
            margin-bottom: 30px;
            text-align: center;
        }
        .article-header h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 15px;
            color: var(--secondary);
        }
        .meta-info {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--gray);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }
        .update-time {
            background: #fff3cd;
            padding: 8px 15px;
            border-radius: 20px;
            font-weight: 600;
            color: #856404;
        }
        .featured-image {
            margin: 30px 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
        }
        .featured-image img {
            width: 100%;
            height: auto;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            padding: 10px;
            background: #f8f9fa;
        }
        .content-area h2, .content-area h3, .content-area h4 {
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            color: var(--secondary);
            line-height: 1.3;
        }
        .content-area h2 {
            font-size: 2rem;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        .content-area h3 {
            font-size: 1.6rem;
            color: var(--primary);
        }
        .content-area h4 {
            font-size: 1.3rem;
            color: var(--dark);
        }
        .content-area p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.05rem;
        }
        .content-area blockquote {
            border-left: 4px solid var(--primary);
            background: #f8f9fa;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            font-style: italic;
        }
        .code-box {
            background: #1e1e1e;
            color: #d4d4d4;
            padding: 20px;
            border-radius: var(--border-radius);
            margin: 20px 0;
            overflow-x: auto;
            font-family: 'Courier New', monospace;
        }
        .code-box .code {
            color: #ce9178;
        }
        .tip-box {
            background: #d1ecf1;
            border-left: 4px solid #0dcaf0;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .warning-box {
            background: #f8d7da;
            border-left: 4px solid #dc3545;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .reward-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .reward-card {
            background: #f8f9fa;
            border-radius: var(--border-radius);
            padding: 20px;
            text-align: center;
            border: 2px solid #e9ecef;
            transition: var(--transition);
        }
        .reward-card:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
        }
        .reward-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        .link-list {
            columns: 2;
            column-gap: 30px;
            margin: 20px 0;
        }
        .link-list a {
            display: block;
            padding: 8px 0;
            color: var(--primary);
            border-bottom: 1px dashed #eee;
        }
        .link-list a:hover {
            color: var(--primary-dark);
            border-bottom-color: var(--primary);
        }
        .interactive-section {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 2px solid #eee;
        }
        .search-box {
            background: #f8f9fa;
            padding: 25px;
            border-radius: var(--border-radius);
            margin-bottom: 30px;
        }
        .search-box h3 {
            margin-bottom: 15px;
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        .comment-form, .rating-form {
            background: #f8f9fa;
            padding: 25px;
            border-radius: var(--border-radius);
            margin-bottom: 30px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255,70,85,0.25);
        }
        .star-rating {
            display: flex;
            gap: 5px;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffc107;
        }
        footer {
            background: var(--secondary);
            color: white;
            padding: 50px 0 20px;
        }
        .footer-main {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: white;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background: var(--primary);
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col li {
            margin-bottom: 12px;
        }
        .footer-col a {
            color: #adb5bd;
        }
        .footer-col a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 15px;
            border-radius: var(--border-radius);
            margin-top: 20px;
            border-left: 3px solid var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #adb5bd;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .sidebar {
                position: static;
            }
            .footer-main {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .content-area, .sidebar {
                padding: 25px;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
            .search-form {
                flex-direction: column;
            }
            .reward-grid {
                grid-template-columns: 1fr;
            }
            .link-list {
                columns: 1;
            }
        }
        @media (max-width: 576px) {
            .footer-main {
                grid-template-columns: 1fr;
            }
            .meta-info {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }
        }