* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: #0a2e5c;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #c8102e;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0a2e5c 0%, #1a4a8f 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            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;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: #fff;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo span {
            color: #c8102e;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .breadcrumb {
            margin: 10px 0;
            font-size: 0.9rem;
            color: #ccc;
        }
        .breadcrumb a {
            color: #fff;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        .nav-links a {
            color: white;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 4px;
        }
        .nav-links a:hover {
            background-color: rgba(255, 255, 255, 0.15);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        main {
            background: white;
            margin: 2rem auto;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        h1 {
            font-size: 2.8rem;
            color: #0a2e5c;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #c8102e;
            padding-left: 15px;
        }
        h2 {
            font-size: 2rem;
            color: #1a4a8f;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #e6e9ef;
        }
        h3 {
            font-size: 1.6rem;
            color: #333;
            margin: 1.8rem 0 0.8rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
            margin: 1.5rem 0 0.6rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-left: 5px solid #ffcc00;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        strong {
            color: #0a2e5c;
        }
        em {
            color: #c8102e;
            font-style: italic;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 2rem auto;
            display: block;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -1rem;
            margin-bottom: 2rem;
        }
        .functional-section {
            background: #f9f9f9;
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
            border: 1px solid #e1e5eb;
        }
        .functional-section h2 {
            color: #0a2e5c;
            border-bottom: none;
        }
        form {
            display: grid;
            gap: 1.2rem;
            margin-top: 1.5rem;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
        }
        button {
            background: linear-gradient(to right, #0a2e5c, #1a4a8f);
            color: white;
            border: none;
            padding: 14px 24px;
            border-radius: 6px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        button:hover {
            background: linear-gradient(to right, #1a4a8f, #0a2e5c);
        }
        .rating {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ffcc00;
            margin: 10px 0;
        }
        .rating i {
            cursor: pointer;
        }
        footer {
            background: #0a2e5c;
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 1.2rem;
        }
        friend-link {
            display: block;
            margin: 10px 0;
        }
        friend-link a {
            color: #c8102e;
            font-weight: 600;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #2a4a7a;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.2rem;
                right: 20px;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0a2e5c;
                padding: 1rem;
                margin-top: 1rem;
                border-radius: 8px;
            }
            .nav-links.active {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            main {
                padding: 1.5rem;
            }
        }