* {
            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;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.3s ease, text-shadow 0.3s ease;
        }
        a:hover {
            color: #d32f2f;
            text-shadow: 0 0 1px rgba(211, 47, 47, 0.2);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: linear-gradient(135deg, #0a2e5c 0%, #1a4789 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-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #ffde00;
        }
        .my-logo:hover {
            color: #ffde00;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e0e0e0;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: white;
            background-color: rgba(255, 255, 255, 0.15);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin: 0 10px;
            color: #666;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #d32f2f;
        }
        .hero {
            background: linear-gradient(rgba(10, 46, 92, 0.85), rgba(10, 46, 92, 0.9)), url('https://images.unsplash.com/photo-1540747913346-19e32dc3e97e?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            padding: 4rem 1rem;
            text-align: center;
            border-radius: 0 0 20px 20px;
            margin-bottom: 3rem;
        }
        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            margin-bottom: 1rem;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.95;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        h1, h2, h3, h4 {
            color: #0a2e5c;
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 3px solid #ffde00;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            padding-left: 1rem;
            border-left: 5px solid #d32f2f;
        }
        h3 {
            font-size: 1.8rem;
            color: #1a4789;
        }
        h4 {
            font-size: 1.4rem;
            color: #555;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: #444;
            background-color: #f0f7ff;
            padding: 1.5rem;
            border-left: 4px solid #0066cc;
            border-radius: 0 8px 8px 0;
            margin: 2rem 0;
        }
        .highlight-box {
            background: linear-gradient(to right, #fff8e1, #ffecb3);
            border-left: 6px solid #ff9800;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .data-point {
            display: inline-flex;
            align-items: center;
            background: #e3f2fd;
            color: #1565c0;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-weight: bold;
            margin: 0.2rem;
            font-size: 0.9rem;
        }
        .featured-img {
            margin: 2.5rem auto;
            max-width: 900px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }
        .featured-img figcaption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .internal-link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
            padding: 1.5rem;
            background-color: #f8f9fa;
            border-radius: 10px;
            border: 1px dashed #ccc;
        }
        .internal-link-list a {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            padding: 0.7rem;
            background: white;
            border-radius: 6px;
            border: 1px solid #e0e0e0;
        }
        .internal-link-list a:hover {
            background-color: #f0f7ff;
            border-color: #0066cc;
            transform: translateY(-3px);
            transition: all 0.3s ease;
        }
        .internal-link-list i {
            color: #d32f2f;
        }
        .interactive-module {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            margin-bottom: 2rem;
            border-top: 5px solid #0a2e5c;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #0a2e5c;
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
        }
        .module-title i {
            color: #d32f2f;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: #555;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            padding: 0.9rem 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s ease, box-shadow 0.3s ease;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #0066cc;
            box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.2);
        }
        .btn {
            background: linear-gradient(to right, #0a2e5c, #1a4789);
            color: white;
            border: none;
            padding: 1rem 1.8rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.7rem;
            align-self: flex-start;
        }
        .btn:hover {
            background: linear-gradient(to right, #d32f2f, #b71c1c);
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(211, 47, 47, 0.25);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            direction: rtl;
            margin: 1rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.3s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffde00;
        }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .widget-title {
            font-size: 1.3rem;
            color: #0a2e5c;
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid #f0f0f0;
        }
        .update-time {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            color: #666;
            font-size: 0.95rem;
            margin-top: 1rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        .update-time i {
            color: #4caf50;
        }
        .site-footer {
            background: #1a1a1a;
            color: #aaa;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            margin-bottom: 1rem;
        }
        .footer-links h4,
        friend-link h4 {
            color: #fff;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-links ul,
        friend-link ul {
            list-style: none;
        }
        .footer-links li,
        friend-link li {
            margin-bottom: 0.7rem;
        }
        .footer-links a,
        friend-link a {
            color: #aaa;
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .footer-links a:hover,
        friend-link a:hover {
            color: #ffde00;
            padding-left: 5px;
            transition: all 0.3s ease;
        }
        friend-link {
            display: block;
            background-color: #252525;
            padding: 1.5rem;
            border-radius: 8px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #333;
            font-size: 0.9rem;
            color: #777;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 70px);
                background: #0a2e5c;
                flex-direction: column;
                transition: left 0.4s ease;
                padding: 2rem;
                box-shadow: 5px 0 15px rgba(0, 0, 0, 0.2);
                z-index: 999;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .hero {
                padding: 2.5rem 1rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .internal-link-list {
                grid-template-columns: 1fr;
            }
        }