* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            text-decoration: none;
            color: #4a6fa5;
            transition: color 0.3s ease, background-color 0.3s ease;
        }
        a:hover {
            color: #2c4a7a;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-family: 'Comic Sans MS', cursive, sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(to right, #ff7eb3, #65c7f7, #9d50bb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            padding: 5px 0;
        }
        .my-logo:hover {
            transform: scale(1.03);
            transition: transform 0.3s ease;
        }
        .search-form {
            display: flex;
            flex-grow: 0.5;
            max-width: 500px;
            margin: 0 20px;
        }
        .search-input {
            flex-grow: 1;
            padding: 12px 20px;
            border: 2px solid #e1e8ed;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .search-input:focus {
            border-color: #65c7f7;
        }
        .search-button {
            background: linear-gradient(to right, #65c7f7, #9d50bb);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .search-button:hover {
            background: linear-gradient(to right, #4aa8d8, #7c3a9c);
            transform: translateY(-2px);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ff7eb3;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
            padding: 10px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background: #333;
            border-radius: 2px;
            transition: 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -6px);
        }
        .breadcrumb {
            background: #f0f8ff;
            padding: 15px 0;
            margin-bottom: 30px;
            border-bottom: 1px solid #dde7f2;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li {
            display: inline;
            font-size: 0.95rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 10px;
            color: #888;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            flex-grow: 1;
            padding: 30px 0 50px;
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }
        h1, h2, h3, h4 {
            color: #2c3e50;
            margin-top: 1.8em;
            margin-bottom: 0.7em;
            line-height: 1.3;
            font-weight: 700;
        }
        h1 {
            font-size: 2.8rem;
            color: #9d50bb;
            border-bottom: 3px solid #65c7f7;
            padding-bottom: 15px;
            margin-top: 0;
        }
        h2 {
            font-size: 2.1rem;
            color: #4a6fa5;
            padding-left: 15px;
            border-left: 5px solid #ff7eb3;
        }
        h3 {
            font-size: 1.7rem;
            color: #2c4a7a;
        }
        h4 {
            font-size: 1.4rem;
            color: #555;
        }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #444;
            background: #f9f9ff;
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #65c7f7;
            margin-bottom: 2em;
        }
        .highlight {
            background: linear-gradient(120deg, #ffed99 0%, #ffed99 100%);
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: 600;
        }
        .tip-box {
            background: #e8f4fc;
            border-left: 5px solid #65c7f7;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box h4 {
            color: #2c4a7a;
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .tip-box i {
            color: #65c7f7;
        }
        ul, ol {
            margin-bottom: 1.5em;
            padding-left: 30px;
        }
        li {
            margin-bottom: 0.7em;
        }
        .article-image {
            margin: 30px auto;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            max-width: 800px;
        }
        .article-image img {
            transition: transform 0.5s ease;
        }
        .article-image:hover img {
            transform: scale(1.03);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .sidebar {
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            font-size: 1.5rem;
            margin-top: 0;
            padding-bottom: 10px;
            border-bottom: 2px solid #ff7eb3;
            margin-bottom: 20px;
        }
        .sidebar ul {
            list-style: none;
            padding-left: 0;
        }
        .sidebar li {
            margin-bottom: 15px;
        }
        .sidebar a {
            display: block;
            padding: 12px 15px;
            background: #f8f9ff;
            border-radius: 8px;
            border-left: 4px solid #9d50bb;
            transition: all 0.3s ease;
        }
        .sidebar a:hover {
            background: #eef2ff;
            border-left-color: #ff7eb3;
            transform: translateX(5px);
        }
        .interactive-section {
            background: #f9f7ff;
            border-radius: 15px;
            padding: 30px;
            margin: 40px 0;
            border: 1px solid #e1d9ff;
        }
        .interactive-section h3 {
            color: #7c3a9c;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 20px;
        }
        .star-rating {
            display: flex;
            gap: 10px;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffc107;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-weight: 600;
            color: #555;
        }
        .form-input, .form-textarea {
            padding: 14px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.3s;
        }
        .form-input:focus, .form-textarea:focus {
            border-color: #65c7f7;
            outline: none;
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-button {
            background: linear-gradient(to right, #9d50bb, #65c7f7);
            color: white;
            border: none;
            padding: 16px 30px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            align-self: flex-start;
        }
        .submit-button:hover {
            background: linear-gradient(to right, #7c3a9c, #4aa8d8);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(0, 0, 0, 0.1);
        }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 50px 0 30px;
            margin-top: auto;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h4 {
            color: #65c7f7;
            margin-top: 0;
            font-size: 1.4rem;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #bdc3c7;
            transition: color 0.3s, padding-left 0.3s;
        }
        .footer-links a:hover {
            color: #65c7f7;
            padding-left: 8px;
        }
        friend-link {
            display: block;
            background: #34495e;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 15px;
            border-left: 4px solid #ff7eb3;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: #3d566e;
        }
        friend-link a {
            color: #ecf0f1;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #4a6572;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        .update-time {
            color: #ff7eb3;
            font-weight: 600;
            margin-top: 10px;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: stretch;
                gap: 20px;
            }
            .my-logo {
                text-align: center;
                font-size: 1.8rem;
            }
            .search-form {
                order: 3;
                max-width: 100%;
                margin: 0;
            }
            .hamburger {
                display: flex;
                position: absolute;
                top: 25px;
                right: 20px;
            }
            .main-nav {
                display: none;
                width: 100%;
                order: 2;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
                background: white;
                border-radius: 10px;
                overflow: hidden;
                box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            }
            .main-nav li {
                border-bottom: 1px solid #eee;
            }
            .main-nav a {
                display: block;
                padding: 15px 20px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .article-content {
                padding: 25px;
            }
            .sidebar {
                position: static;
            }
        }