:root {
            --primary: #4a00e0;
            --secondary: #8e2de2;
            --accent: #ff4757;
            --dark: #1e1e2d;
            --light: #f8f9fa;
            --gray: #6c757d;
            --shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 12px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(to right, #ff9a00, #ff4757);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -1px;
            transition: var(--transition);
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-3px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: var(--dark);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: var(--shadow);
            z-index: 999;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 1.2rem;
        }
        .nav-mobile a:hover {
            background-color: rgba(255, 255, 255, 0.05);
            padding-left: 1.5rem;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #f5f7ff;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--gray);
            margin: 0 8px;
        }
        .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-area {
            background: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            align-self: start;
        }
        h1 {
            font-size: 3.2rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        h2 {
            font-size: 2.3rem;
            color: var(--primary);
            margin: 2.8rem 0 1.5rem;
            padding-bottom: 0.7rem;
            border-bottom: 3px solid #f0f0f0;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary);
            margin: 2.2rem 0 1rem;
        }
        h4 {
            font-size: 1.5rem;
            color: #555;
            margin: 1.8rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.15rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.4rem;
            color: var(--dark);
            font-weight: 600;
            background: linear-gradient(to right, #ffecd2, #fcb69f);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 6px solid var(--accent);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 5px solid #ffc107;
            margin: 2rem 0;
            font-style: italic;
        }
        .featured-image {
            width: 100%;
            max-width: 800px;
            margin: 2.5rem auto;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        }
        .featured-image img {
            width: 100%;
            transition: var(--transition);
        }
        .featured-image img:hover {
            transform: scale(1.03);
        }
        .fig-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            padding: 1rem;
            background-color: #f9f9f9;
        }
        .quote {
            font-size: 1.3rem;
            color: var(--primary);
            text-align: center;
            padding: 2rem;
            border-radius: var(--border-radius);
            background: linear-gradient(45deg, #f8f9ff, #eef2ff);
            margin: 2.5rem 0;
            border: 2px dashed var(--primary);
            font-weight: 600;
        }
        .content-link {
            color: var(--secondary);
            font-weight: 600;
            border-bottom: 2px dotted var(--secondary);
            transition: var(--transition);
        }
        .content-link:hover {
            color: var(--accent);
            border-bottom-style: solid;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat {
            background: white;
            padding: 1.8rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            text-align: center;
            border-top: 6px solid var(--primary);
            transition: var(--transition);
        }
        .stat:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .stat i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--dark);
            line-height: 1;
        }
        .stat-label {
            color: var(--gray);
            font-size: 1.1rem;
            margin-top: 0.5rem;
        }
        .interactive-module {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .module-title {
            color: white;
            font-size: 2rem;
            margin-bottom: 1.5rem;
            text-align: center;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.7rem;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 1rem 1.2rem;
            border-radius: 50px;
            border: none;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.5);
        }
        .btn {
            display: inline-block;
            padding: 1rem 2.5rem;
            background: var(--accent);
            color: white;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background: #ff2e43;
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255, 71, 87, 0.4);
        }
        .btn-block {
            width: 100%;
            text-align: center;
        }
        .rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1.5rem 0;
        }
        .star {
            font-size: 2.5rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
            transform: scale(1.2);
        }
        .sidebar-title {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid #f0f0f0;
        }
        .sidebar-list {
            list-style: none;
        }
        .sidebar-list li {
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed #eee;
        }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 0.8rem;
            border-radius: 10px;
            transition: var(--transition);
        }
        .sidebar-list a:hover {
            background-color: #f5f5ff;
            padding-left: 1.2rem;
            color: var(--primary);
        }
        .sidebar-list i {
            color: var(--secondary);
            font-size: 1.2rem;
        }
        .update-time {
            background-color: #e7f7ff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            margin-top: 2rem;
            border: 2px solid #b3e5fc;
        }
        .update-time i {
            color: #0288d1;
            margin-right: 10px;
        }
        .site-footer {
            background-color: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(to right, #ff9a00, #ff4757);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 1.5rem;
        }
        .footer-about {
            line-height: 1.7;
            color: #b0b7c3;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1.2rem;
            border-radius: 10px;
            margin-bottom: 1rem;
            transition: var(--transition);
            border-left: 4px solid var(--primary);
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(10px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #b0b7c3;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 2rem;
            }
            h3 {
                font-size: 1.6rem;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-area {
                padding: 1.5rem;
            }
            .sidebar {
                padding: 1.5rem;
            }
            .lead {
                font-size: 1.2rem;
                padding: 1.2rem;
            }
            .stats-box {
                grid-template-columns: 1fr;
            }
        }