* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            max-width: 100vw;
            overflow-x: hidden;
        }
        .site-header {
            background: linear-gradient(to right, #1a237e, #283593);
            color: white;
            padding: 1rem 2rem;
            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;
            max-width: 1400px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #4fc3f7;
            text-decoration: none;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: #29b6f6;
            transform: scale(1.05);
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .nav-menu {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        .nav-menu a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
            position: relative;
        }
        .nav-menu a:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: #4fc3f7;
            transition: width 0.3s ease;
        }
        .nav-menu a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background: #e3f2fd;
            padding: 1rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #bbdefb;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #1565c0;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
        }
        .main-content {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        .sidebar {
            background: white;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        h1 {
            color: #1a237e;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #4fc3f7;
            padding-bottom: 0.8rem;
        }
        h2 {
            color: #283593;
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-left: 1rem;
            border-left: 5px solid #ff9800;
        }
        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: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #555;
            font-weight: 500;
            background: #f1f8fe;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #2196f3;
        }
        .highlight {
            background: linear-gradient(120deg, #e1f5fe 0%, #bbdefb 100%);
            padding: 1.5rem;
            border-radius: 8px;
            border: 1px solid #90caf9;
            margin: 1.8rem 0;
        }
        .tip {
            background: #fff8e1;
            border-left: 5px solid #ffb300;
            padding: 1.2rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip i {
            color: #ff8f00;
            margin-right: 10px;
        }
        .content-link {
            color: #1565c0;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px dotted transparent;
            transition: all 0.3s ease;
        }
        .content-link:hover {
            color: #0d47a1;
            border-bottom: 2px dotted #1565c0;
        }
        .search-widget {
            background: #f5f9ff;
            padding: 1.8rem;
            border-radius: 10px;
            margin: 2rem 0;
            border: 1px solid #e1f5fe;
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex: 1;
            padding: 1rem;
            border: 2px solid #bbdefb;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        .search-input:focus {
            outline: none;
            border-color: #2196f3;
        }
        .search-btn {
            background: linear-gradient(to right, #2196f3, #1976d2);
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-btn:hover {
            background: linear-gradient(to right, #1976d2, #0d47a1);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(33, 150, 243, 0.3);
        }
        .user-interaction {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #e0e0e0;
        }
        .rating-section, .comment-section {
            background: #fafafa;
            padding: 2rem;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #e0e0e0;
            cursor: pointer;
            transition: color 0.2s ease;
        }
        .star:hover,
        .star.active {
            color: #ffb300;
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #e0e0e0;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            resize: vertical;
            min-height: 120px;
            margin: 1rem 0;
        }
        .submit-btn {
            background: linear-gradient(to right, #4caf50, #2e7d32);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #43a047, #1b5e20);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(76, 175, 80, 0.3);
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            transition: transform 0.5s ease;
        }
        .featured-image:hover {
            transform: scale(1.01);
        }
        .site-footer {
            background: #263238;
            color: #eceff1;
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
        }
        friend-link a {
            color: #bbdefb;
            text-decoration: none;
            padding: 0.5rem;
            display: inline-block;
            transition: all 0.3s ease;
            border-radius: 4px;
        }
        friend-link a:hover {
            color: white;
            background: rgba(255, 255, 255, 0.1);
            padding-left: 1.2rem;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #546e7a;
            font-size: 0.9rem;
            color: #b0bec5;
        }
        .update-time {
            background: #e8f5e9;
            color: #2e7d32;
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin: 1.5rem 0;
            font-weight: 600;
        }
        @media (max-width: 1100px) {
            .container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
                gap: 0.5rem;
            }
            .nav-menu.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .main-content, .sidebar {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-btn {
                justify-content: center;
                padding: 1rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .main-content, .sidebar {
            animation: fadeIn 0.8s ease-out;
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 3px;
        }
        .bold {
            font-weight: 800;
            color: #1a237e;
        }
        .text-center {
            text-align: center;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }