* {
            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;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 800; }
        .highlight {
            background: linear-gradient(120deg, #ffde59 0%, #ffde59 100%);
            background-repeat: no-repeat;
            background-size: 100% 0.4em;
            background-position: 0 88%;
        }
        .emoji { font-size: 1.2em; }
        header {
            background: linear-gradient(135deg, #1a237e 0%, #283593 50%, #3949ab 100%);
            color: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: #ffde59;
            text-decoration: none;
            letter-spacing: -0.5px;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .my-logo a span {
            color: #ffffff;
        }
        .search-form {
            display: flex;
            flex: 0 1 400px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 18px;
            border: none;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background-color: #ffde59;
            color: #1a237e;
            border: none;
            border-radius: 0 30px 30px 0;
            padding: 0 25px;
            cursor: pointer;
            font-weight: 700;
            transition: all 0.3s;
        }
        .search-form button:hover {
            background-color: #ffd32a;
        }
        .breadcrumb {
            padding: 12px 0;
            background-color: #e8eaf6;
            font-size: 0.9rem;
            border-bottom: 1px solid #c5cae9;
        }
        .breadcrumb a {
            color: #3949ab;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        nav {
            background-color: #283593;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            position: relative;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            padding: 18px 20px;
            display: block;
            font-weight: 600;
            transition: background-color 0.3s;
            border-bottom: 3px solid transparent;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background-color: rgba(255, 255, 255, 0.1);
            border-bottom-color: #ffde59;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 10px;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        article {
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            padding: 40px;
        }
        article h1 {
            color: #1a237e;
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        article h2 {
            color: #283593;
            font-size: 2rem;
            margin-top: 40px;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #ffde59;
        }
        article h3 {
            color: #3949ab;
            font-size: 1.6rem;
            margin-top: 30px;
            margin-bottom: 10px;
        }
        article h4 {
            color: #5c6bc0;
            font-size: 1.3rem;
            margin-top: 25px;
            margin-bottom: 10px;
        }
        article p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        article ul, article ol {
            margin-bottom: 20px;
            padding-left: 30px;
        }
        article li {
            margin-bottom: 8px;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px dashed #ddd;
            font-size: 0.95rem;
            color: #666;
        }
        .update-time {
            background-color: #e3f2fd;
            padding: 8px 15px;
            border-radius: 20px;
            color: #1565c0;
        }
        .featured-img {
            margin: 30px 0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .featured-img figcaption {
            text-align: center;
            font-style: italic;
            padding: 10px;
            color: #666;
            background-color: #f5f5f5;
        }
        .internal-links {
            background-color: #f3f4ff;
            border-left: 5px solid #3949ab;
            padding: 20px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .internal-links ul {
            list-style: none;
            padding-left: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 10px;
        }
        .internal-links a {
            color: #1a237e;
            text-decoration: none;
            padding: 8px 0;
            display: block;
            transition: all 0.3s;
        }
        .internal-links a:hover {
            color: #ff9800;
            padding-left: 8px;
        }
        .internal-links a::before {
            content: "🔗";
            margin-right: 8px;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .sidebar-widget h3 {
            color: #1a237e;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #ffde59;
            font-size: 1.5rem;
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 5px;
            font-weight: 600;
            color: #444;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #3949ab;
            box-shadow: 0 0 0 3px rgba(57, 73, 171, 0.2);
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn-submit {
            background: linear-gradient(to right, #3949ab, #283593);
            color: white;
            border: none;
            padding: 14px 25px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
        }
        .btn-submit:hover {
            background: linear-gradient(to right, #283593, #1a237e);
            transform: translateY(-2px);
            box-shadow: 0 5px 12px rgba(0,0,0,0.15);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 2rem;
            margin: 10px 0;
            color: #ddd;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: #ffde59;
        }
        footer {
            background-color: #1a237e;
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        @media (max-width: 768px) {
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        .footer-widget h4 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: #ffde59;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-widget h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background-color: #5c6bc0;
        }
        .footer-links {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #c5cae9;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #ffde59;
            padding-left: 5px;
        }
        .friend-links-section {
            background-color: #0d153a;
            padding: 20px;
            border-radius: 8px;
        }
        friend-link {
            display: inline-block;
            margin-right: 15px;
            margin-bottom: 10px;
        }
        friend-link a {
            color: #ffde59;
            text-decoration: none;
            padding: 5px 10px;
            border: 1px solid #5c6bc0;
            border-radius: 4px;
            font-size: 0.9rem;
            transition: all 0.3s;
        }
        friend-link a:hover {
            background-color: #3949ab;
            border-color: #ffde59;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #3949ab;
            color: #c5cae9;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 20px;
            }
            .search-form {
                width: 100%;
                max-width: 500px;
            }
            .hamburger {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 140px;
                left: -100%;
                flex-direction: column;
                background-color: #283593;
                width: 100%;
                text-align: center;
                transition: 0.3s;
                box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
                z-index: 999;
                padding: 20px 0;
                border-top: 1px solid rgba(255,255,255,0.1);
            }
            .nav-links.active {
                left: 0;
            }
            .nav-links a {
                padding: 15px;
            }
            article {
                padding: 25px;
            }
            article h1 {
                font-size: 2.2rem;
            }
            article h2 {
                font-size: 1.8rem;
            }
        }