* {
            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: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: #0a6c9f;
            text-decoration: none;
            transition: color 0.3s ease, text-shadow 0.3s ease;
        }
        a:hover {
            color: #0891d1;
            text-shadow: 0 0 8px rgba(8, 145, 209, 0.2);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .highlight { background-color: #fffacd; padding: 2px 5px; border-radius: 3px; }
        .site-header {
            background: linear-gradient(90deg, #0a3d62 0%, #1a6ca0 50%, #2a9dcc 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Rounded MT Bold', sans-serif;
            font-size: 2.2rem;
            font-weight: 800;
            color: #7ae0ff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            text-shadow: 0 0 10px rgba(122, 224, 255, 0.5);
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .my-logo:hover {
            color: #a6f0ff;
            text-shadow: 0 0 15px rgba(166, 240, 255, 0.8);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 12px;
            border-radius: 6px;
            display: block;
        }
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .breadcrumb {
            background-color: #e9f5fb;
            padding: 12px 0;
            border-bottom: 1px solid #c5e2f0;
            font-size: 0.9rem;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #0a6c9f;
        }
        .breadcrumb i {
            margin: 0 5px;
            color: #888;
            font-size: 0.8rem;
        }
        .hero {
            padding: 3rem 0;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path fill="%231a6ca0" opacity="0.05" d="M0,0 L100,0 L100,100 Z"/></svg>'), linear-gradient(135deg, #d4ecff 0%, #f0f9ff 100%);
            border-bottom: 1px solid #b8dfff;
        }
        .hero h1 {
            font-size: 2.8rem;
            color: #0a3d62;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            color: #444;
            max-width: 800px;
            margin-bottom: 2rem;
        }
        .last-updated {
            font-style: italic;
            color: #666;
            font-size: 0.95rem;
            background: #fff;
            padding: 10px 15px;
            border-radius: 8px;
            display: inline-block;
            border-left: 4px solid #0a6c9f;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);
        }
        .article-content h2 {
            color: #0a6c9f;
            font-size: 2rem;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            padding-bottom: 10px;
            border-bottom: 3px solid #e1f2ff;
            position: relative;
        }
        .article-content h2:first-of-type {
            margin-top: 0;
        }
        .article-content h2::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 80px;
            height: 3px;
            background: linear-gradient(90deg, #0a6c9f, #7ae0ff);
            border-radius: 3px;
        }
        .article-content h3 {
            color: #1a6ca0;
            font-size: 1.6rem;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        .article-content h4 {
            color: #2a7ca0;
            font-size: 1.3rem;
            margin-top: 1.5rem;
            margin-bottom: 0.6rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.08rem;
        }
        .article-content ul, .article-content ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .featured-image {
            margin: 2.5rem 0;
            text-align: center;
        }
        .featured-image figcaption {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .insider-tip {
            background: #f0f9ff;
            border-left: 5px solid #0a6c9f;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .insider-tip h4 {
            color: #0a6c9f;
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
        }
        .sidebar-widget h3 {
            color: #0a3d62;
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            padding-bottom: 10px;
            border-bottom: 2px dashed #e1f2ff;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: 2px solid #c5e2f0;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: #0a6c9f;
        }
        .search-form button {
            background: linear-gradient(90deg, #0a6c9f, #1a6ca0);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: linear-gradient(90deg, #1a6ca0, #2a9dcc);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .rating-form label, .comment-form label {
            font-weight: 600;
            color: #444;
        }
        .rating-form select, .comment-form textarea {
            padding: 12px;
            border: 2px solid #c5e2f0;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            resize: vertical;
            outline: none;
            transition: border 0.3s;
        }
        .rating-form select:focus, .comment-form textarea:focus {
            border-color: #0a6c9f;
        }
        .rating-form button, .comment-form button {
            background: linear-gradient(90deg, #0a6c9f, #1a6ca0);
            color: white;
            border: none;
            padding: 12px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: background 0.3s, transform 0.2s;
        }
        .rating-form button:hover, .comment-form button:hover {
            background: linear-gradient(90deg, #1a6ca0, #2a9dcc);
            transform: translateY(-2px);
        }
        .stars {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #ffc107;
            margin: 10px 0;
        }
        .related-links ul {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
        }
        .related-links li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: #0a6c9f;
        }
        .site-footer {
            background: linear-gradient(90deg, #0a3d62 0%, #1a6ca0 100%);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h3 {
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            color: #7ae0ff;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #c5e2f0;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color 0.3s, transform 0.3s;
        }
        .footer-links a:hover {
            color: white;
            transform: translateX(5px);
        }
        friend-link {
            display: block;
            margin-bottom: 10px;
            font-weight: 600;
        }
        friend-link a {
            color: #ffcc00;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #a6d9ff;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background: #0a3d62;
                flex-direction: column;
                align-items: center;
                padding: 2rem 0;
                gap: 0;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-in-out;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav ul.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav li {
                width: 100%;
                text-align: center;
            }
            .main-nav a {
                padding: 15px;
                border-radius: 0;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .article-content {
                padding: 1.8rem;
            }
            .article-content h2 {
                font-size: 1.8rem;
            }
            .article-content h3 {
                font-size: 1.5rem;
            }
        }