* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: #2c5aa0;
            transition: color 0.3s;
        }
        a:hover {
            color: #1a3c6e;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #2c5aa0, #4a7bc8);
            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: 800;
            letter-spacing: 1px;
            color: white;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo span {
            color: #ffde59;
        }
        .breadcrumb {
            padding: 10px 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #2c5aa0;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 1.8rem;
        }
        .nav-links a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0.3rem;
            border-bottom: 2px solid transparent;
        }
        .nav-links a:hover {
            border-bottom-color: #ffde59;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        main {
            padding: 2rem 0;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
            margin-top: 1rem;
        }
        article {
            padding: 0 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #2c5aa0;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffde59;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #1a3c6e;
            margin: 2.5rem 0 1rem;
            padding-left: 10px;
            border-left: 5px solid #4a7bc8;
        }
        h3 {
            font-size: 1.6rem;
            color: #2c5aa0;
            margin: 2rem 0 0.8rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
            margin: 1.5rem 0 0.6rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #444;
            font-weight: 500;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fff9db;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #ffde59;
            margin: 2rem 0;
        }
        .image-container {
            margin: 2.5rem auto;
            text-align: center;
        }
        .image-container img {
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            border: 1px solid #ddd;
        }
        .caption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .content-link {
            background-color: #f0f7ff;
            padding: 0.3rem 0.6rem;
            border-radius: 4px;
            border: 1px dashed #4a7bc8;
        }
        .update-time {
            font-size: 0.9rem;
            color: #888;
            text-align: right;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        .interactive-box {
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
        }
        .interactive-box h3 {
            margin-top: 0;
            color: #1a3c6e;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
        }
        button {
            background: linear-gradient(to right, #2c5aa0, #4a7bc8);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 5px;
            font-weight: 600;
            cursor: pointer;
            transition: opacity 0.3s;
        }
        button:hover {
            opacity: 0.9;
        }
        .rating {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-top: 1rem;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        footer {
            background-color: #1a3c6e;
            color: #ccc;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #ffde59;
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
            transition: all 0.3s;
        }
        friend-link {
            display: inline-block;
            background: #2c5aa0;
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            margin: 0.3rem;
            font-size: 0.95rem;
        }
        friend-link:hover {
            background-color: #4a7bc8;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2c5aa0;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .header-content { flex-direction: column; align-items: flex-start; }
            .my-logo { margin-bottom: 1rem; }
            nav { width: 100%; justify-content: space-between; }
            .nav-links { display: none; width: 100%; flex-direction: column; background-color: #2c5aa0; position: absolute; top: 100%; left: 0; padding: 1rem; }
            .nav-links.show { display: flex; }
            .nav-links li { margin: 0.8rem 0; }
            .hamburger { display: block; }
            article { padding: 0 1rem; }
        }
        @media (max-width: 576px) {
            .container { padding: 0 15px; }
            h1 { font-size: 2rem; }
            .interactive-box { padding: 1.5rem; }
            .footer-content { grid-template-columns: 1fr; }
        }