* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background-color: #f9f9f9;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(135deg, #58cc02 0%, #1cb0f6 100%);
            color: white;
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-radius: 0 0 15px 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: #ffd700; }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #666;
        }
        .breadcrumb a { color: #58cc02; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-list a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .nav-list a:hover, .nav-list a.active {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .search-container {
            background: #fff;
            padding: 1.5rem;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #58cc02;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-btn {
            background-color: #58cc02;
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-btn:hover { background-color: #4aa300; }
        main { display: grid; grid-template-columns: 1fr 300px; gap: 2.5rem; }
        article { background: white; padding: 2.5rem; border-radius: 15px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); }
        aside { background: #f1f8ff; padding: 1.8rem; border-radius: 15px; height: fit-content; }
        h1 { color: #1a5fb4; font-size: 2.8rem; margin-bottom: 1.5rem; line-height: 1.2; }
        h2 { color: #58cc02; font-size: 2rem; margin: 2.5rem 0 1.2rem; padding-bottom: 0.5rem; border-bottom: 2px dashed #e0e0e0; }
        h3 { color: #1cb0f6; font-size: 1.5rem; margin: 2rem 0 1rem; }
        h4 { color: #666; font-size: 1.2rem; margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        strong { color: #1a5fb4; }
        em { color: #e85d04; }
        .highlight-box {
            background: linear-gradient(to right, #e1f5fe, #f3e5f5);
            border-left: 5px solid #58cc02;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .related-link {
            display: inline-block;
            background: #e9f7ef;
            color: #1a5fb4;
            padding: 0.3rem 0.8rem;
            border-radius: 6px;
            text-decoration: none;
            margin: 0.3rem;
            font-size: 0.95rem;
            transition: all 0.3s;
        }
        .related-link:hover {
            background: #58cc02;
            color: white;
            transform: scale(1.05);
        }
        .update-time {
            font-size: 0.9rem;
            color: #888;
            text-align: right;
            font-style: italic;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        .user-feedback {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 3px solid #1cb0f6;
        }
        .feedback-form {
            background: #f8fdff;
            padding: 1.8rem;
            border-radius: 12px;
            margin-bottom: 2rem;
        }
        .form-group { margin-bottom: 1.2rem; }
        .form-label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #555; }
        .form-input, .form-textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
        }
        .form-textarea { min-height: 120px; }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .star-rating .star:hover,
        .star-rating .star.active { color: #ffd700; }
        .submit-btn {
            background: linear-gradient(to right, #58cc02, #1cb0f6);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: transform 0.3s;
        }
        .submit-btn:hover { transform: translateY(-3px); }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-title {
            color: #1a5fb4;
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #58cc02;
        }
        .widget-list {
            list-style: none;
        }
        .widget-list li { margin-bottom: 0.8rem; }
        .widget-list a {
            color: #333;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0.6rem;
            border-radius: 6px;
            transition: all 0.3s;
        }
        .widget-list a:hover {
            background-color: #58cc02;
            color: white;
            padding-left: 1.2rem;
        }
        .widget-list i { color: #1cb0f6; }
        footer {
            background: #2d3748;
            color: #cbd5e0;
            padding: 2.5rem 0;
            margin-top: 4rem;
            border-radius: 15px 15px 0 0;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-title {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 1rem;
        }
        friend-link a {
            color: #58cc02;
            text-decoration: none;
        }
        friend-link a:hover { text-decoration: underline; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 992px) {
            main { grid-template-columns: 1fr; }
            .nav-list { gap: 1rem; }
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .main-nav { width: 100%; margin-top: 1.5rem; }
            .nav-list {
                flex-direction: column;
                width: 100%;
                display: none;
            }
            .nav-list.active { display: flex; }
            .hamburger { display: block; align-self: flex-end; margin-top: -50px; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
        }