* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-color: #1a365d;
            --secondary-color: #e53e3e;
            --accent-color: #38b2ac;
            --light-color: #f7fafc;
            --dark-color: #2d3748;
            --gray-color: #a0aec0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f8f9fa;
            color: var(--dark-color);
            line-height: 1.8;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-color), #2c5282);
            color: white;
            padding: 1.2rem 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: 2.5rem;
            font-weight: 900;
            letter-spacing: 2px;
            background: linear-gradient(to right, #fbd38d, #fc8181);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover {
            background-color: rgba(255,255,255,0.15);
            color: #fbd38d;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }
        .hamburger span {
            width: 30px;
            height: 4px;
            background-color: white;
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(8px, 8px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -7px);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #edf2f7;
            color: var(--dark-color);
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: var(--secondary-color);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-section {
            background: linear-gradient(90deg, #4c51bf, #805ad5);
            padding: 2.5rem 0;
            text-align: center;
            color: white;
            margin-bottom: 2.5rem;
            border-radius: 0 0 20px 20px;
        }
        .search-box {
            max-width: 700px;
            margin: 0 auto;
        }
        .search-box h2 {
            margin-bottom: 1.5rem;
            font-size: 2.2rem;
        }
        .search-form {
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-form input {
            flex: 1;
            padding: 1.2rem 1.8rem;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-form button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 0 2.5rem;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #c53030;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2.5rem 0;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .main-content {
            background-color: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background-color: white;
            padding: 1.8rem;
            border-radius: 15px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        h1 {
            color: var(--primary-color);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-bottom: 4px solid var(--accent-color);
            padding-bottom: 0.7rem;
        }
        h2 {
            color: var(--primary-color);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed var(--gray-color);
        }
        h3 {
            color: var(--secondary-color);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: var(--accent-color);
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .intro {
            font-size: 1.25rem;
            color: var(--dark-color);
            background-color: #f0fff4;
            padding: 1.5rem;
            border-left: 5px solid var(--accent-color);
            border-radius: 0 10px 10px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fffaf0;
            padding: 1.8rem;
            border-radius: 10px;
            border: 2px solid #fbd38d;
            margin: 1.8rem 0;
        }
        .highlight strong {
            color: var(--secondary-color);
            font-size: 1.1rem;
        }
        .emoji-list {
            list-style: none;
            padding-left: 0;
        }
        .emoji-list li {
            padding: 0.7rem 0;
            font-size: 1.1rem;
        }
        .emoji-list li::before {
            content: "🎯 ";
            margin-right: 10px;
        }
        .content-link {
            color: var(--secondary-color);
            font-weight: 600;
            border-bottom: 1px dotted var(--secondary-color);
        }
        .content-link:hover {
            color: #c53030;
            border-bottom: 1px solid #c53030;
        }
        .feature-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 15px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border: 5px solid white;
            outline: 2px solid var(--gray-color);
        }
        .user-interaction {
            margin-top: 3rem;
            padding: 2rem;
            background-color: #f7fafc;
            border-radius: 15px;
            border: 1px solid #e2e8f0;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 1.5rem;
        }
        .interaction-box {
            background-color: white;
            padding: 1.8rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .interaction-box h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--primary-color);
        }
        .interaction-box form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1rem;
        }
        .interaction-box input,
        .interaction-box textarea,
        .interaction-box select {
            padding: 0.8rem;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-size: 1rem;
        }
        .interaction-box button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .interaction-box button:hover {
            background-color: #2d3748;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ecc94b;
            cursor: pointer;
            margin-bottom: 1rem;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .site-footer {
            background-color: var(--primary-color);
            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-section h3 {
            color: #fbd38d;
            margin-bottom: 1.5rem;
            font-size: 1.4rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a:hover {
            color: #fbd38d;
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background-color: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            margin: 0.3rem;
            border-radius: 4px;
            font-size: 0.95rem;
        }
        friend-link:hover {
            background-color: rgba(255,255,255,0.2);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: var(--gray-color);
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--primary-color);
                padding: 1.5rem;
                box-shadow: var(--shadow);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: flex;
            }
            .my-logo {
                font-size: 2rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .main-content {
                padding: 1.5rem;
            }
            .search-box h2 {
                font-size: 1.8rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: 15px;
            }
            .search-form input,
            .search-form button {
                border-radius: 0;
                padding: 1rem;
            }
        }