* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    }
    :root {
        --primary: #4361ee;
        --secondary: #3a0ca3;
        --accent: #f72585;
        --light: #f8f9fa;
        --dark: #212529;
        --gray: #6c757d;
        --success: #4cc9f0;
        --border-radius: 12px;
        --shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
        --transition: all 0.3s ease;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
        color: var(--dark);
        line-height: 1.7;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }
    .header-container {
        background: white;
        box-shadow: var(--shadow);
        position: sticky;
        top: 0;
        z-index: 1000;
    }
    .top-bar {
        max-width: 1280px;
        margin: 0 auto;
        padding: 1rem 2rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
    }
    .my-logo {
        font-size: 2.2rem;
        font-weight: 800;
        background: linear-gradient(90deg, var(--primary), var(--secondary));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .my-logo i {
        color: var(--accent);
        font-size: 2.5rem;
    }
    .nav-container {
        display: flex;
        align-items: center;
        gap: 2rem;
    }
    .main-nav {
        display: flex;
        gap: 1.8rem;
        list-style: none;
    }
    .main-nav a {
        text-decoration: none;
        color: var(--dark);
        font-weight: 600;
        font-size: 1.05rem;
        padding: 0.5rem 0;
        position: relative;
        transition: var(--transition);
    }
    .main-nav a:hover {
        color: var(--primary);
    }
    .main-nav a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 3px;
        background: var(--accent);
        transition: width 0.3s ease;
    }
    .main-nav a:hover::after {
        width: 100%;
    }
    .search-box {
        display: flex;
        border: 2px solid #e9ecef;
        border-radius: 50px;
        overflow: hidden;
        background: white;
    }
    .search-box input {
        padding: 0.7rem 1.2rem;
        border: none;
        outline: none;
        min-width: 250px;
        font-size: 1rem;
    }
    .search-box button {
        background: var(--primary);
        color: white;
        border: none;
        padding: 0 1.5rem;
        cursor: pointer;
        transition: var(--transition);
    }
    .search-box button:hover {
        background: var(--secondary);
    }
    .hamburger {
        display: none;
        font-size: 1.8rem;
        cursor: pointer;
        color: var(--dark);
        background: none;
        border: none;
    }
    .breadcrumb {
        max-width: 1280px;
        margin: 1rem auto 0;
        padding: 0 2rem;
    }
    .breadcrumb ol {
        display: flex;
        list-style: none;
        flex-wrap: wrap;
        gap: 0.5rem;
        font-size: 0.95rem;
    }
    .breadcrumb a {
        color: var(--gray);
        text-decoration: none;
        transition: var(--transition);
    }
    .breadcrumb a:hover {
        color: var(--primary);
    }
    .breadcrumb li:not(:last-child)::after {
        content: '›';
        margin-left: 0.5rem;
        color: var(--gray);
    }
    .main-content {
        flex: 1;
        max-width: 1280px;
        width: 100%;
        margin: 2rem auto;
        padding: 0 2rem;
        display: grid;
        grid-template-columns: 1fr 300px;
        gap: 3rem;
    }
    @media (max-width: 992px) {
        .main-content {
            grid-template-columns: 1fr;
        }
    }
    .article-container {
        background: white;
        border-radius: var(--border-radius);
        padding: 3rem;
        box-shadow: var(--shadow);
    }
    h1 {
        font-size: 3rem;
        color: var(--secondary);
        margin-bottom: 1.5rem;
        line-height: 1.2;
        border-bottom: 4px solid var(--accent);
        padding-bottom: 1rem;
    }
    h2 {
        font-size: 2.2rem;
        color: var(--primary);
        margin: 3rem 0 1.5rem;
        padding-bottom: 0.7rem;
        border-bottom: 2px dashed #e9ecef;
    }
    h3 {
        font-size: 1.7rem;
        color: var(--secondary);
        margin: 2.5rem 0 1.2rem;
    }
    h4 {
        font-size: 1.4rem;
        color: #495057;
        margin: 2rem 0 1rem;
    }
    p {
        margin-bottom: 1.5rem;
        font-size: 1.1rem;
        text-align: justify;
    }
    .lead {
        font-size: 1.3rem;
        font-weight: 500;
        color: var(--dark);
        background: #f1f8ff;
        padding: 1.5rem;
        border-left: 5px solid var(--primary);
        border-radius: 0 var(--border-radius) var(--border-radius) 0;
        margin-bottom: 2.5rem;
    }
    .highlight {
        background: linear-gradient(120deg, #ffecb3 0%, #ffecb3 100%);
        padding: 0.2rem 0.5rem;
        border-radius: 4px;
        font-weight: 600;
    }
    .note-box {
        background: #e7f5ff;
        border-left: 5px solid var(--success);
        padding: 1.5rem;
        border-radius: 0 var(--border-radius) var(--border-radius) 0;
        margin: 2rem 0;
    }
    .note-box i {
        color: var(--success);
        margin-right: 10px;
    }
    .feature-list {
        list-style: none;
        margin: 1.5rem 0;
    }
    .feature-list li {
        padding: 0.8rem 0;
        padding-left: 2.5rem;
        position: relative;
    }
    .feature-list li::before {
        content: '✓';
        position: absolute;
        left: 0;
        color: var(--success);
        font-weight: bold;
        font-size: 1.2rem;
    }
    .article-img {
        width: 100%;
        height: auto;
        border-radius: var(--border-radius);
        margin: 2.5rem 0;
        box-shadow: var(--shadow);
        transition: transform 0.5s ease;
    }
    .article-img:hover {
        transform: scale(1.01);
    }
    .sidebar {
        display: flex;
        flex-direction: column;
        gap: 2rem;
    }
    .sidebar-widget {
        background: white;
        border-radius: var(--border-radius);
        padding: 2rem;
        box-shadow: var(--shadow);
    }
    .widget-title {
        font-size: 1.5rem;
        color: var(--secondary);
        margin-bottom: 1.5rem;
        padding-bottom: 0.7rem;
        border-bottom: 2px solid #f1f3f5;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .download-box {
        background: linear-gradient(135deg, var(--primary), var(--secondary));
        color: white;
        text-align: center;
        padding: 2.5rem 1.5rem;
        border-radius: var(--border-radius);
    }
    .download-btn {
        display: inline-block;
        background: var(--accent);
        color: white;
        text-decoration: none;
        font-weight: 700;
        font-size: 1.3rem;
        padding: 1rem 2.5rem;
        border-radius: 50px;
        margin-top: 1.5rem;
        transition: var(--transition);
        box-shadow: 0 6px 15px rgba(247, 37, 133, 0.3);
    }
    .download-btn:hover {
        background: #ff0676;
        transform: translateY(-5px);
    }
    .related-links a {
        display: block;
        padding: 0.9rem 1rem;
        background: #f8f9fa;
        margin-bottom: 0.8rem;
        border-radius: 8px;
        color: var(--dark);
        text-decoration: none;
        transition: var(--transition);
        border-left: 4px solid transparent;
    }
    .related-links a:hover {
        background: #e9ecef;
        border-left-color: var(--accent);
        padding-left: 1.5rem;
    }
    .interactive-section {
        background: #f8f9fa;
        border-radius: var(--border-radius);
        padding: 2.5rem;
        margin: 3rem 0;
        border: 1px solid #e9ecef;
    }
    .rating-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }
    .stars {
        display: flex;
        gap: 0.5rem;
        font-size: 2.5rem;
        color: #ffd700;
        cursor: pointer;
    }
    .stars i:hover {
        transform: scale(1.2);
    }
    .comment-form, .score-form {
        display: flex;
        flex-direction: column;
        gap: 1.2rem;
        width: 100%;
        max-width: 600px;
        margin: 0 auto;
    }
    .form-group {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    .form-group label {
        font-weight: 600;
        color: var(--dark);
    }
    input, textarea, select {
        padding: 1rem;
        border: 2px solid #dee2e6;
        border-radius: 8px;
        font-size: 1rem;
        transition: var(--transition);
    }
    input:focus, textarea:focus, select:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
    }
    .submit-btn {
        background: var(--primary);
        color: white;
        border: none;
        padding: 1rem 2rem;
        border-radius: 8px;
        font-weight: 700;
        font-size: 1.1rem;
        cursor: pointer;
        transition: var(--transition);
        align-self: flex-start;
    }
    .submit-btn:hover {
        background: var(--secondary);
        transform: translateY(-3px);
    }
    footer {
        background: var(--dark);
        color: white;
        margin-top: 4rem;
    }
    .footer-content {
        max-width: 1280px;
        margin: 0 auto;
        padding: 3rem 2rem;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 3rem;
    }
    @media (max-width: 768px) {
        .footer-content {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 576px) {
        .footer-content {
            grid-template-columns: 1fr;
        }
    }
    .footer-logo {
        font-size: 2rem;
        font-weight: 800;
        color: white;
        margin-bottom: 1rem;
        display: block;
    }
    friend-link {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        margin-top: 1.5rem;
    }
    friend-link a {
        color: #adb5bd;
        text-decoration: none;
        transition: var(--transition);
    }
    friend-link a:hover {
        color: white;
        padding-left: 10px;
    }
    .copyright {
        text-align: center;
        padding: 2rem;
        background: #1a1a1a;
        color: #adb5bd;
        font-size: 0.95rem;
        border-top: 1px solid #343a40;
    }
    @media (max-width: 992px) {
        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        .top-bar { padding: 1rem; }
        .article-container, .sidebar-widget { padding: 2rem; }
    }
    @media (max-width: 768px) {
        .nav-container {
            position: fixed;
            top: 80px;
            left: -100%;
            width: 100%;
            background: white;
            flex-direction: column;
            padding: 2rem;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            transition: left 0.4s ease;
            z-index: 999;
        }
        .nav-container.active {
            left: 0;
        }
        .main-nav {
            flex-direction: column;
            width: 100%;
            gap: 1rem;
        }
        .search-box {
            width: 100%;
            margin-top: 1rem;
        }
        .search-box input {
            min-width: auto;
            flex: 1;
        }
        .hamburger {
            display: block;
        }
        .main-content {
            padding: 0 1rem;
        }
    }