* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #3a0ca3;
            --secondary: #4361ee;
            --accent: #f72585;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --success: #4cc9f0;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --radius: 10px;
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f5f7ff;
            color: var(--dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow);
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(67, 97, 238, 0.4);
            color: white;
        }
        section {
            padding: 60px 0;
        }
        header {
            background: white;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            padding: 15px 0;
            border-bottom: 1px solid #eee;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }
        .logo span {
            color: var(--secondary);
        }
        .search-box {
            flex-grow: 1;
            max-width: 500px;
            margin: 0 30px;
            position: relative;
        }
        .search-box form {
            display: flex;
        }
        .search-box input {
            width: 100%;
            padding: 12px 20px;
            border: 2px solid #e0e0e0;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-box input:focus {
            border-color: var(--secondary);
        }
        .search-box button {
            padding: 0 25px;
            background: linear-gradient(90deg, var(--secondary), var(--primary));
            color: white;
            border: none;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--primary);
        }
        nav {
            background: var(--dark);
            padding: 0;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .main-nav {
            display: flex;
            list-style: none;
        }
        .main-nav li {
            position: relative;
        }
        .main-nav a {
            display: block;
            padding: 18px 22px;
            color: white;
            font-weight: 500;
            text-decoration: none;
            transition: var(--transition);
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255,255,255,0.1);
            color: var(--success);
        }
        .dropdown {
            position: absolute;
            background: white;
            min-width: 220px;
            box-shadow: var(--shadow);
            border-radius: var(--radius);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: var(--transition);
            z-index: 100;
        }
        .main-nav li:hover .dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .dropdown a {
            color: var(--dark);
            padding: 12px 20px;
            border-bottom: 1px solid #eee;
        }
        .dropdown a:hover {
            background: var(--light);
            color: var(--primary);
        }
        .breadcrumb {
            padding: 15px 0;
            background: #f1f3ff;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            margin: 0 8px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        main {
            background: white;
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        aside {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.2;
            border-left: 6px solid var(--accent);
            padding-left: 20px;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed #eee;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary);
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--primary);
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 1.2em;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--gray);
            background: #f8f9ff;
            padding: 20px;
            border-radius: var(--radius);
            border-left: 4px solid var(--secondary);
            margin-bottom: 30px;
        }
        .highlight {
            background: linear-gradient(90deg, #ffef78, #ffcc00);
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: bold;
        }
        .note {
            background: #e8f4fd;
            border-left: 4px solid var(--success);
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 1.5em;
        }
        li {
            margin-bottom: 8px;
        }
        .featured-img {
            margin: 30px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            position: relative;
        }
        .featured-img img {
            width: 100%;
            transition: var(--transition);
        }
        .featured-img:hover img {
            transform: scale(1.03);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        .widget {
            margin-bottom: 30px;
            padding-bottom: 25px;
            border-bottom: 1px solid #eee;
        }
        .widget-title {
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
        }
        .widget-links a {
            display: block;
            padding: 10px 0;
            border-bottom: 1px dotted #eee;
            color: var(--dark);
        }
        .widget-links a:hover {
            color: var(--accent);
            padding-left: 10px;
        }
        .update-time {
            background: #fff8e1;
            padding: 15px;
            border-radius: var(--radius);
            font-size: 0.9rem;
            color: var(--gray);
            text-align: center;
        }
        .interaction-form {
            background: #f9fbff;
            padding: 30px;
            border-radius: var(--radius);
            margin: 50px 0;
            border: 1px solid #e6ecff;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars label:hover,
        .rating-stars input:checked ~ label {
            color: #ffcc00;
        }
        .form-row {
            display: flex;
            gap: 20px;
        }
        .form-row .form-group {
            flex: 1;
        }
        footer {
            background: var(--dark);
            color: #ccc;
            padding: 60px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            margin-bottom: 15px;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #aaa;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 15px;
            margin: 10px 0;
            border-radius: 5px;
            text-align: center;
            color: var(--success);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
            h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .search-box {
                order: 3;
                max-width: 100%;
                margin: 15px 0 0;
            }
            .mobile-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--dark);
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                padding: 15px 20px;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }
            .dropdown {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                background: rgba(0,0,0,0.2);
                border-radius: 0;
                display: none;
            }
            .main-nav li:hover .dropdown {
                display: block;
            }
            .form-row {
                flex-direction: column;
                gap: 0;
            }
            main {
                padding: 25px;
            }
        }
        @media (max-width: 576px) {
            .footer-content {
                grid-template-columns: 1fr;
            }
            section {
                padding: 40px 0;
            }
        }