* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0a1e5e 0%, #1a3a8f 100%);
            color: white;
            padding: 1.2rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
            text-transform: uppercase;
        }
        .my-logo span {
            color: #00c3ff;
        }
        .my-logo:hover {
            color: #00c3ff;
            transform: scale(1.02);
            transition: all 0.3s ease;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: #e6e6e6;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        nav a:hover, nav a.active {
            color: #00c3ff;
            background-color: rgba(255, 255, 255, 0.1);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: 0.3s;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb a {
            color: #0a1e5e;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
            min-height: 80vh;
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            margin-bottom: 2.5rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #0a1e5e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #00c3ff;
            padding-left: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #1a3a8f;
            margin: 2.5rem 0 1.2rem 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f0f0f0;
        }
        h3 {
            font-size: 1.6rem;
            color: #2a4a9f;
            margin: 2rem 0 1rem 0;
        }
        h4 {
            font-size: 1.3rem;
            color: #3a5aaf;
            margin: 1.5rem 0 0.8rem 0;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #555;
            font-weight: 500;
            background-color: #f0f8ff;
            padding: 1.2rem;
            border-radius: 8px;
            border-left: 4px solid #0a1e5e;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background: linear-gradient(120deg, #e0f7ff 0%, #d1e9ff 100%);
            padding: 1.8rem;
            border-radius: 10px;
            margin: 2rem 0;
            border-left: 5px solid #00c3ff;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        strong {
            color: #0a1e5e;
            font-weight: 700;
        }
        .internal-link {
            color: #1a73e8;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dashed #1a73e8;
            padding-bottom: 1px;
        }
        .internal-link:hover {
            color: #0a1e5e;
            border-bottom: 2px solid #0a1e5e;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            margin: 2.5rem auto;
            display: block;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .function-section {
            background: #f8f9ff;
            border: 1px solid #dde1ff;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
        }
        .function-section h3 {
            color: #0a1e5e;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .function-form {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 15px;
            margin-top: 1.5rem;
        }
        .function-input, .function-textarea {
            padding: 1rem;
            border: 2px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .function-input:focus, .function-textarea:focus {
            border-color: #00c3ff;
            outline: none;
        }
        .function-textarea {
            grid-column: 1 / -1;
            min-height: 120px;
            resize: vertical;
        }
        .function-btn {
            background: linear-gradient(to right, #0a1e5e, #1a3a8f);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .function-btn:hover {
            background: linear-gradient(to right, #1a3a8f, #2a4a9f);
            transform: translateY(-3px);
            box-shadow: 0 5px 12px rgba(10, 30, 94, 0.2);
        }
        .rating-container {
            display: flex;
            align-items: center;
            gap: 15px;
            flex-wrap: wrap;
            margin-top: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 5px;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        footer {
            background-color: #0a1e5e;
            color: #e6e6e6;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #00c3ff;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #00c3ff;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 1.5rem 0;
            padding: 1rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
        }
        friend-link a {
            color: #00c3ff;
            font-weight: 600;
            text-decoration: none;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        .last-updated {
            text-align: right;
            font-style: italic;
            color: #777;
            margin-top: 2rem;
            font-size: 0.95rem;
            border-top: 1px dashed #ccc;
            padding-top: 1rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            nav { width: 100%; order: 3; margin-top: 1rem; }
            nav ul {
                flex-direction: column;
                display: none;
                gap: 0;
            }
            nav ul.active {
                display: flex;
            }
            nav li {
                width: 100%;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            nav a {
                display: block;
                padding: 0.8rem;
            }
            .hamburger {
                display: flex;
            }
            .function-form {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            article { padding: 1.5rem; }
            .lead { font-size: 1.1rem; padding: 1rem; }
        }