* { 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-color: #f8f9fa;
            background-image: linear-gradient(to bottom right, #f0f4ff, #e6f7ff);
            overflow-x: hidden;
        }
        a { color: #4a6ee0; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #ff6b8b; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
            color: white;
            padding: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #64ffda;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
            letter-spacing: -0.5px;
        }
        .my-logo span { color: #ffd166; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e2e8f0;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background-color: rgba(255, 255, 255, 0.1);
            color: #64ffda;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
            border-bottom: 1px solid #cbd5e0;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
            color: #718096;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2.5rem 0;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        main article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        h1 {
            font-size: 2.8rem;
            color: #2d3748;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #4a6ee0;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #4a5568;
            margin: 2.5rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 5px solid #ff6b8b;
        }
        h3 {
            font-size: 1.6rem;
            color: #5a67d8;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #718096;
            margin: 1.5rem 0 0.75rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: #4a5568;
            background: #f7fafc;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #4a6ee0;
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(120deg, #fffbeb 0%, #fef3c7 100%);
            padding: 1.5rem;
            border-radius: 8px;
            border: 1px solid #fbbf24;
            margin: 1.5rem 0;
        }
        .tip {
            background-color: #e6fffa;
            border-left: 5px solid #38b2ac;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
        }
        .tip i { color: #38b2ac; margin-right: 0.5rem; }
        ul, ol { margin-left: 1.5rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.5rem; }
        .feature-box {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 2rem;
            border-radius: 12px;
            margin: 2.5rem 0;
            text-align: center;
        }
        .feature-box h3 { color: white; border: none; }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 500px;
            margin: 1.5rem auto;
        }
        .form-group { display: flex; flex-direction: column; }
        label { font-weight: 600; margin-bottom: 0.3rem; }
        input, textarea, select {
            padding: 0.75rem;
            border: 2px solid #cbd5e0;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4a6ee0;
            box-shadow: 0 0 0 3px rgba(74, 110, 224, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, #4a6ee0, #6a5af9);
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        button:hover, .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(74, 110, 224, 0.3);
        }
        .stars { display: flex; gap: 0.5rem; justify-content: center; margin: 1rem 0; }
        .star { font-size: 1.8rem; color: #e2e8f0; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star.active { color: #fbbf24; }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.06);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget { margin-bottom: 2rem; }
        .widget-title {
            font-size: 1.3rem;
            color: #2d3748;
            padding-bottom: 0.5rem;
            margin-bottom: 1rem;
            border-bottom: 2px solid #e2e8f0;
        }
        .link-list { list-style: none; margin-left: 0; }
        .link-list li { margin-bottom: 0.8rem; }
        .link-list a {
            display: block;
            padding: 0.75rem;
            background: #f7fafc;
            border-radius: 6px;
            border-left: 4px solid #4a6ee0;
            transition: all 0.3s;
        }
        .link-list a:hover {
            background: #edf2f7;
            border-left-color: #ff6b8b;
            padding-left: 1rem;
        }
        .article-img {
            width: 100%;
            max-width: 800px;
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .article-img img { width: 100%; transition: transform 0.5s ease; }
        .article-img:hover img { transform: scale(1.02); }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .site-footer {
            background: #2d3748;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 { color: #fff; margin-bottom: 1.2rem; font-size: 1.3rem; }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 0.8rem;
            margin-bottom: 0.8rem;
            border-radius: 5px;
            border-left: 3px solid #64ffda;
            transition: background 0.3s;
        }
        friend-link:hover { background: rgba(255,255,255,0.1); }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        .update-time {
            background: #fffbeb;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            display: inline-block;
            margin-top: 1rem;
            font-size: 0.9rem;
            color: #92400e;
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .main-nav { order: 3; width: 100%; margin-top: 1rem; display: none; }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; gap: 0; }
            .main-nav li { width: 100%; }
            .main-nav a { display: block; padding: 1rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            .content-wrapper { gap: 2rem; }
            main article { padding: 1.5rem; }
            aside { position: static; }
        }