* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        ul, ol {
            list-style-position: inside;
            padding-left: 1.2em;
        }
        h1, h2, h3, h4 {
            font-family: 'Arial Black', Gadget, sans-serif;
            color: #0a3d62;
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            border-bottom: 5px solid #1e90ff;
            padding-bottom: 0.3em;
            text-align: center;
        }
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            border-left: 4px solid #ff6b6b;
            padding-left: 15px;
        }
        h3 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            color: #1e90ff;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
        }
        p {
            margin-bottom: 1.2em;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: bold;
            color: #0a3d62;
            background: #e6f7ff;
            padding: 20px;
            border-radius: 10px;
            margin: 25px 0;
            border-left: 5px solid #1e90ff;
        }
        .highlight {
            background-color: #fffacd;
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: bold;
        }
        .keyword-link {
            color: #1e90ff;
            font-weight: bold;
            border-bottom: 1px dashed #1e90ff;
        }
        .keyword-link:hover {
            color: #ff6b6b;
            border-bottom-style: solid;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0a3d62 0%, #1e90ff 100%);
            color: white;
            padding: 15px 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;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: white;
        }
        .logo:hover {
            color: #ffd700;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 12px 20px;
            font-size: 0.9rem;
            margin-bottom: 20px;
            border-radius: 0 0 8px 8px;
        }
        .breadcrumb a {
            color: #0a3d62;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            gap: 25px;
        }
        .nav-links a {
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 5px;
        }
        .nav-links a:hover, .nav-links a.active {
            background-color: rgba(255, 255, 255, 0.2);
            color: #ffd700;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .functional-nav {
            background-color: #fff;
            border-radius: 10px;
            padding: 20px;
            margin: 25px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 15px;
        }
        .func-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px;
            background: #f8f9fa;
            border-radius: 8px;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .func-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 7px 12px rgba(30, 144, 255, 0.2);
            background: #e6f7ff;
        }
        .func-icon {
            font-size: 1.5rem;
            color: #1e90ff;
            min-width: 40px;
            text-align: center;
        }
        main {
            padding: 30px 0;
            background-color: white;
            border-radius: 15px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.05);
            margin-bottom: 40px;
        }
        .article-content {
            padding: 0 30px;
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 15px;
            margin: 30px auto;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .info-box {
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            border-left: 5px solid #0a3d62;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 10px 10px 0;
        }
        .interactive-section {
            background-color: #f1f8ff;
            border-radius: 15px;
            padding: 30px;
            margin: 40px 0;
            border: 2px solid #d0e7ff;
        }
        .section-title {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 25px;
        }
        form {
            display: grid;
            gap: 20px;
            max-width: 600px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 8px;
            font-weight: bold;
            color: #0a3d62;
        }
        input, textarea, select {
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #1e90ff;
            box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.2);
        }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin-bottom: 10px;
        }
        .star-rating .star:hover,
        .star-rating .star:hover ~ .star {
            color: #ddd;
        }
        .star-rating .star.selected {
            color: #ffd700;
        }
        button {
            background: linear-gradient(to right, #0a3d62, #1e90ff);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            justify-self: start;
        }
        button:hover {
            background: linear-gradient(to right, #1e90ff, #0a3d62);
            transform: scale(1.03);
            box-shadow: 0 5px 15px rgba(30, 144, 255, 0.4);
        }
        footer {
            background: #0a3d62;
            color: #ccc;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: #ffd700;
            margin-bottom: 20px;
            font-size: 1.4rem;
        }
        friend-link {
            display: block;
            margin-bottom: 10px;
            padding: 8px;
            background: rgba(255,255,255,0.05);
            border-radius: 5px;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: rgba(255,255,255,0.1);
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #0a3d62;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                border-top: 1px solid rgba(255,255,255,0.1);
                z-index: 999;
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .article-content {
                padding: 0 20px;
            }
            .functional-nav {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 15px;
            }
            .logo {
                font-size: 1.5rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .interactive-section {
                padding: 20px;
            }
        }
        .text-center { text-align: center; }
        .mt-3 { margin-top: 1rem; }
        .mb-3 { margin-bottom: 1rem; }
        .p-3 { padding: 1rem; }