* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            color: #333;
            line-height: 1.7;
            padding-top: 80px; 
        }
        a {
            text-decoration: none;
            color: #2c5282;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1a365d;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-header {
            background: linear-gradient(90deg, #1a365d 0%, #2c5282 100%);
            color: white;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: #f6ad55;
        }
        .logo-text {
            background: linear-gradient(to right, #f6ad55, #fc8181);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: #e2e8f0;
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover, .main-nav a.active {
            color: #f6ad55;
            border-bottom-color: #f6ad55;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 12px 20px;
            border-bottom: 1px solid #cbd5e0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #4a5568;
        }
        .breadcrumb a:hover {
            color: #2c5282;
        }
        .breadcrumb span {
            color: #718096;
        }
        main {
            padding: 30px 0;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            margin-bottom: 40px;
            overflow: hidden;
        }
        .article-header {
            text-align: center;
            padding: 30px 20px;
            border-bottom: 1px solid #e2e8f0;
            margin-bottom: 40px;
        }
        h1 {
            color: #1a365d;
            font-size: 2.8rem;
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .article-meta {
            color: #718096;
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 20px;
        }
        .update-time {
            background-color: #e6fffa;
            color: #234e52;
            padding: 5px 10px;
            border-radius: 20px;
            font-weight: 600;
        }
        .content-section {
            padding: 0 30px 40px;
        }
        h2 {
            color: #2c5282;
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #cbd5e0;
        }
        h3 {
            color: #2d3748;
            font-size: 1.6rem;
            margin: 30px 0 15px;
        }
        h4 {
            color: #4a5568;
            font-size: 1.3rem;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fffaf0;
            border-left: 4px solid #f6ad55;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight p {
            margin-bottom: 0;
            font-weight: 600;
            color: #744210;
        }
        .featured-image {
            width: 80%;
            max-width: 800px;
            margin: 30px auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            border: 5px solid #e2e8f0;
        }
        .featured-image figcaption {
            text-align: center;
            font-style: italic;
            color: #718096;
            padding: 10px;
            background-color: #f7fafc;
        }
        .content-links {
            list-style: none;
            background-color: #f0fff4;
            border-radius: 10px;
            padding: 25px;
            margin: 30px 0;
            border: 1px solid #9ae6b4;
        }
        .content-links li {
            margin-bottom: 12px;
            padding-left: 25px;
            position: relative;
        }
        .content-links li:before {
            content: '🃏';
            position: absolute;
            left: 0;
        }
        .interactive-module {
            background-color: #f7fafc;
            border-radius: 12px;
            padding: 30px;
            margin: 40px 0;
            border: 1px solid #cbd5e0;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #2c5282;
            margin-bottom: 25px;
        }
        .module-title i {
            color: #f6ad55;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #4a5568;
        }
        input, textarea, select {
            width: 100%;
            padding: 14px;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #2c5282;
            box-shadow: 0 0 0 3px rgba(44, 82, 130, 0.2);
        }
        button {
            background: linear-gradient(90deg, #2c5282, #1a365d);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover {
            background: linear-gradient(90deg, #1a365d, #2c5282);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #cbd5e0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #f6ad55;
        }
        footer {
            background-color: #1a202c;
            color: #a0aec0;
            padding: 50px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h4 {
            color: #f7fafc;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #a0aec0;
        }
        .footer-links a:hover {
            color: #f6ad55;
        }
        friend-link {
            display: block;
            background-color: #2d3748;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 15px;
            border-left: 4px solid #f6ad55;
        }
        friend-link a {
            color: #f7fafc;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #718096;
        }
        @media (max-width: 992px) {
            h1 {
                font-size: 2.4rem;
            }
            .featured-image {
                width: 90%;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #1a365d;
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid #2c5282;
            }
            .main-nav a {
                display: block;
                padding: 15px;
            }
            .hamburger {
                display: block;
            }
            .header-container {
                padding: 15px;
            }
            .content-section, .article-header {
                padding-left: 20px;
                padding-right: 20px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 10px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            h1 {
                font-size: 1.8rem;
            }
            .interactive-module {
                padding: 20px;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-4 { margin-top: 2rem; }
        .mb-4 { margin-bottom: 2rem; }
        .emoji { font-size: 1.2em; }
        .bold { font-weight: 800; color: #1a365d; }