* {
            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;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #1a73e8;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0d47a1;
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0d47a1, #1976d2);
            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 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: 1px;
            color: white;
        }
        .my-logo span {
            color: #ffeb3b;
        }
        .my-logo:hover {
            text-decoration: none;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 30px;
        }
        nav ul li a {
            color: white;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        nav ul li a:hover,
        nav ul li a.active {
            color: #ffeb3b;
            border-bottom-color: #ffeb3b;
            text-decoration: none;
        }
        .breadcrumb {
            background-color: #e3f2fd;
            padding: 12px 0;
            font-size: 0.9rem;
            color: #555;
        }
        .breadcrumb a {
            color: #1976d2;
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        article {
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            padding: 40px;
            margin-bottom: 30px;
        }
        h1 {
            font-size: 2.8rem;
            color: #0d47a1;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid #ff9800;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2.1rem;
            color: #1976d2;
            margin: 35px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e0e0e0;
        }
        h3 {
            font-size: 1.7rem;
            color: #333;
            margin: 28px 0 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: #555;
            margin: 24px 0 12px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #444;
            background-color: #e8f4fd;
            padding: 20px;
            border-left: 5px solid #2196f3;
            border-radius: 0 8px 8px 0;
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fffde7;
            padding: 20px;
            border-radius: 8px;
            border-left: 5px solid #ffc107;
            margin: 25px 0;
        }
        .quote {
            font-style: italic;
            padding: 20px 30px;
            margin: 25px 40px;
            background-color: #f5f5f5;
            border-radius: 10px;
            border-left: 5px solid #9e9e9e;
            color: #555;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 25px auto;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -15px;
            margin-bottom: 25px;
        }
        ul, ol {
            margin-left: 30px;
            margin-bottom: 20px;
        }
        li {
            margin-bottom: 8px;
        }
        .keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 20px 0;
        }
        .keyword {
            background: #e3f2fd;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #1565c0;
        }
        .interactive-box {
            background: #f1f8e9;
            border: 2px dashed #7cb342;
            border-radius: 10px;
            padding: 25px;
            margin: 30px 0;
            text-align: center;
        }
        .interactive-box h3 {
            color: #33691e;
            margin-top: 0;
        }
        form {
            margin: 20px 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #444;
        }
        input, textarea, select {
            width: 100%;
            padding: 14px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #2196f3;
            box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
        }
        button, .btn {
            background: linear-gradient(to right, #2196f3, #1976d2);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #1976d2, #0d47a1);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
            text-decoration: none;
        }
        .rating {
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 20px 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .update-time {
            background-color: #fff3e0;
            padding: 15px;
            border-radius: 8px;
            margin: 20px 0;
            font-size: 0.95rem;
            color: #e65100;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .update-time i {
            font-size: 1.2rem;
        }
        footer {
            background-color: #263238;
            color: #eceff1;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h4 {
            color: #bbdefb;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links a {
            display: block;
            color: #cfd8dc;
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: #ffeb3b;
        }
        friend-link {
            display: inline-block;
            background-color: #37474f;
            padding: 10px 20px;
            margin: 5px 10px 5px 0;
            border-radius: 6px;
            color: #bbdefb;
            font-size: 0.95rem;
        }
        friend-link a {
            color: #bbdefb;
        }
        friend-link:hover {
            background-color: #455a64;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #37474f;
            font-size: 0.9rem;
            color: #b0bec5;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .mobile-toggle {
                display: block;
            }
            nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            nav.active {
                max-height: 300px;
            }
            nav ul {
                flex-direction: column;
                padding: 20px 0 10px;
            }
            nav ul li {
                margin: 10px 0 0 0;
            }
            nav ul li a {
                display: block;
                padding: 10px 0;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            article {
                padding: 25px;
            }
            .quote {
                margin: 25px 0;
            }
            .interactive-box {
                padding: 20px;
            }
        }