* {
            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;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #2c5aa0;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: #d44a1e;
            text-decoration: underline;
        }
        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; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-2 { margin-top: 2rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }
        .bold { font-weight: 700; }
        .highlight {
            background: linear-gradient(120deg, #ffecb3 0%, #ffecb3 100%);
            padding: 0.2em 0.4em;
            border-radius: 3px;
        }
        .site-header {
            background: #1a2b4c;
            color: #fff;
            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;
            padding: 1rem 20px;
        }
        .my-logo {
            font-family: 'Arial Black', Gadget, sans-serif;
            font-size: 1.8rem;
            color: #ff6b35;
            text-decoration: none !important;
        }
        .my-logo span {
            color: #4dabf7;
        }
        .my-logo:hover {
            color: #ff8b35;
            text-decoration: none;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e9ecef;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: #ff6b35;
            text-decoration: none;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            bottom: 0;
            left: 0;
            background-color: #ff6b35;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 0.8rem 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #ced4da;
        }
        .breadcrumb a {
            color: #495057;
        }
        .breadcrumb a:hover {
            color: #1a2b4c;
        }
        .breadcrumb span {
            color: #6c757d;
            margin: 0 0.5rem;
        }
        .hero {
            background: linear-gradient(rgba(26, 43, 76, 0.85), rgba(26, 43, 76, 0.9)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 4rem 1rem;
            margin-bottom: 3rem;
            text-align: center;
            border-radius: 0 0 20px 20px;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
            opacity: 0.9;
        }
        .main-content {
            flex: 1;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 0 20px 3rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: #fff;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        .sidebar {
            background: #fff;
            padding: 1.5rem;
            border-radius: 15px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1, h2, h3, h4 {
            color: #1a2b4c;
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 { font-size: 3.2rem; }
        h2 {
            font-size: 2.2rem;
            border-bottom: 3px solid #ff6b35;
            padding-bottom: 0.5rem;
        }
        h3 { font-size: 1.8rem; color: #2c5aa0; }
        h4 { font-size: 1.4rem; color: #495057; }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        blockquote {
            border-left: 5px solid #4dabf7;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: 0 10px 10px 0;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .featured-img {
            margin: 2.5rem 0;
            text-align: center;
        }
        .featured-img img {
            border-radius: 10px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            transition: transform 0.5s ease;
        }
        .featured-img img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            font-size: 0.9rem;
            color: #6c757d;
            margin-top: 0.5rem;
            font-style: italic;
        }
        .form-box {
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 10px;
            padding: 1.5rem;
            margin-bottom: 2rem;
        }
        .form-title {
            margin-top: 0;
            color: #1a2b4c;
            font-size: 1.5rem;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #495057;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #ced4da;
            border-radius: 5px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4dabf7;
            box-shadow: 0 0 0 3px rgba(77, 171, 247, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, #ff6b35, #d44a1e);
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 5px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #ff8b35, #e85a2c);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
            text-decoration: none;
            color: white;
        }
        .rating-widget {
            background: #fff8e1;
            padding: 1.5rem;
            border-radius: 10px;
            border: 1px dashed #ffd54f;
        }
        .stars {
            font-size: 2rem;
            color: #ffd54f;
            margin: 0.5rem 0;
            cursor: pointer;
        }
        .stars span {
            margin-right: 0.2rem;
            transition: color 0.2s ease;
        }
        .stars span:hover,
        .stars span:hover ~ span {
            color: #ffca28;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            margin-top: 0;
            color: #1a2b4c;
            border-bottom: 2px solid #4dabf7;
            padding-bottom: 0.5rem;
        }
        .link-list {
            list-style: none;
            margin-left: 0;
        }
        .link-list li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dotted #dee2e6;
        }
        .link-list li:last-child {
            border-bottom: none;
        }
        .update-time {
            background: #e7f5ff;
            padding: 1rem;
            border-radius: 8px;
            font-size: 0.9rem;
            color: #1a2b4c;
            margin-top: 2rem;
        }
        .update-time i {
            color: #2c5aa0;
            margin-right: 0.5rem;
        }
        .site-footer {
            background: #1a2b4c;
            color: #e9ecef;
            padding: 3rem 20px 1.5rem;
            margin-top: auto;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-logo {
            font-family: 'Arial Black', Gadget, sans-serif;
            font-size: 2rem;
            color: #ff6b35;
            margin-bottom: 1rem;
        }
        .footer-section h4 {
            color: #ff6b35;
            margin-top: 0;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #adb5bd;
        }
        .footer-links a:hover {
            color: #ff6b35;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
            padding: 0.8rem;
            background: #2c3e5c;
            border-radius: 5px;
            transition: background 0.3s ease;
        }
        friend-link:hover {
            background: #3a4f6e;
        }
        friend-link a {
            color: #4dabf7;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2c3e5c;
            color: #adb5bd;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .mobile-toggle {
                display: block;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active {
                max-height: 300px;
                padding-top: 1rem;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            h2 { font-size: 1.9rem; }
            h3 { font-size: 1.6rem; }
            .article-content {
                padding: 1.5rem;
            }
            .main-content {
                padding: 0 15px 2rem;
            }
        }