* { 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, #f8f9ff 0%, #eef1ff 100%);
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(90deg, #1a237e 0%, #283593 50%, #3949ab 100%);
            color: white;
            padding: 1.5rem 0;
            border-radius: 0 0 20px 20px;
            box-shadow: 0 6px 20px rgba(25, 25, 112, 0.2);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            padding: 0 1.5rem;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover { color: #c5cae9; transform: scale(1.02); }
        .my-logo i { color: #ffd54f; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 2rem;
            background: #e8eaf6;
            border-radius: 10px;
            margin: 1.5rem auto;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: #3949ab;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-container {
            background: white;
            padding: 2rem;
            border-radius: 16px;
            box-shadow: 0 8px 25px rgba(57, 73, 171, 0.1);
            margin: 2rem 0;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: 2px solid #3949ab;
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
        }
        .search-form button {
            background: linear-gradient(to right, #3949ab, #1a237e);
            color: white;
            border: none;
            padding: 0 2rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.3s;
        }
        .search-form button:hover { background: #283593; }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 3rem 0;
        }
        @media (max-width: 992px) {
            .content-area { grid-template-columns: 1fr; }
        }
        main article {
            background: white;
            padding: 3rem;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }
        h1 {
            color: #1a237e;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            border-left: 8px solid #ffd54f;
            padding-left: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            color: #283593;
            font-size: 2rem;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #c5cae9;
        }
        h3 {
            color: #3949ab;
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: #5c6bc0;
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.8rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: #555;
            background: #f3f4ff;
            padding: 1.5rem;
            border-radius: 12px;
            margin-bottom: 2.5rem;
            border-left: 5px solid #3949ab;
        }
        .highlight {
            background: linear-gradient(120deg, #e1f5fe 0%, #fff9c4 100%);
            padding: 2rem;
            border-radius: 15px;
            margin: 2.5rem 0;
            border: 2px dashed #ffb74d;
        }
        .internal-link {
            color: #1a237e;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px dotted #5c6bc0;
            transition: all 0.2s;
        }
        .internal-link:hover {
            color: #ff6f00;
            border-bottom-style: solid;
        }
        .feature-img {
            width: 100%;
            border-radius: 15px;
            margin: 2.5rem auto;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            border: 8px solid white;
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: #777;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        aside {
            background: white;
            padding: 2rem;
            border-radius: 20px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        .widget {
            margin-bottom: 2.5rem;
        }
        .widget h3 {
            color: #1a237e;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .widget ul {
            list-style: none;
        }
        .widget li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid #eee;
        }
        .widget a {
            color: #3949ab;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: all 0.3s;
        }
        .widget a:hover {
            color: #ff6f00;
            transform: translateX(5px);
        }
        .user-interaction {
            background: white;
            padding: 2.5rem;
            border-radius: 20px;
            margin-top: 3rem;
            box-shadow: 0 10px 25px rgba(57, 73, 171, 0.1);
        }
        .rating-form, .comment-form {
            margin-bottom: 2.5rem;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active { color: #ffd54f; }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #c5cae9;
            border-radius: 10px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #3949ab;
            outline: none;
        }
        .submit-btn {
            background: linear-gradient(to right, #3949ab, #1a237e);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            background: #283593;
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(57, 73, 171, 0.3);
        }
        .site-footer {
            background: linear-gradient(90deg, #1a237e 0%, #0d1440 100%);
            color: white;
            padding: 3rem 2rem;
            border-radius: 20px 20px 0 0;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 1rem;
        }
        friend-link a {
            color: #c5cae9;
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        friend-link a:hover { color: #ffd54f; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.95rem;
            color: #b0b7e0;
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .main-nav { width: 100%; margin-top: 1rem; display: none; }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; gap: 0.5rem; }
            .main-nav a { display: block; padding: 1rem; }
            .hamburger { display: block; align-self: flex-end; margin-top: -3rem; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            main article { padding: 2rem; }
            .content-area { gap: 2rem; }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article, aside, .user-interaction {
            animation: fadeIn 0.8s ease-out;
        }
        .pulse {
            display: inline-block;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }