* { 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;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: #2c5aa0; transition: color 0.3s ease; }
        a:hover { color: #e63946; }
        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, #1a2980, #26d0ce);
            color: white;
            padding: 1rem 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: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: #ffd166; }
        .my-logo span { background: -webkit-linear-gradient(#ffd166, #e63946); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover { color: #ffd166; }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffd166;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after { width: 100%; }
        .burger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }
        .burger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: 0.3s;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:hover { color: #1a2980; }
        .breadcrumb span { color: #888; }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-grid { grid-template-columns: 1fr; }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 1.5rem;
            margin-bottom: 2rem;
            border-bottom: 2px dashed #eee;
            font-size: 0.95rem;
            color: #666;
        }
        .update-time { color: #e63946; font-weight: 600; }
        h1 {
            font-size: 2.8rem;
            color: #1a2980;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: #2c5aa0;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffd166;
        }
        h3 {
            font-size: 1.6rem;
            color: #333;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .intro {
            font-size: 1.2rem;
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            padding: 1.5rem;
            border-left: 5px solid #26d0ce;
            border-radius: 0 10px 10px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1rem;
            border-radius: 8px;
            border-left: 4px solid #ffb347;
            margin: 1.5rem 0;
        }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            margin: 2rem auto;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            border: 5px solid white;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        blockquote {
            font-style: italic;
            color: #555;
            border-left: 4px solid #1a2980;
            padding-left: 1.5rem;
            margin: 2rem 0;
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: 0 10px 10px 0;
        }
        ul, ol { margin: 1.5rem 0 1.5rem 2rem; }
        li { margin-bottom: 0.8rem; }
        .link-box {
            display: inline-block;
            background: #2c5aa0;
            color: white;
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            margin: 1rem 0;
            box-shadow: 0 4px 10px rgba(44, 90, 160, 0.3);
        }
        .link-box:hover { background: #1a2980; color: white; transform: translateY(-3px); }
        .emoji { font-size: 1.3em; margin-right: 5px; }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget-title {
            font-size: 1.4rem;
            color: #1a2980;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffd166;
        }
        .search-form input {
            width: 100%;
            padding: 0.9rem;
            border: 2px solid #ddd;
            border-radius: 50px;
            font-size: 1rem;
            margin-bottom: 1rem;
        }
        .search-form button {
            width: 100%;
            padding: 0.9rem;
            background: linear-gradient(to right, #1a2980, #26d0ce);
            color: white;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s;
        }
        .search-form button:hover { transform: scale(1.02); }
        .rating-widget .stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 1.5rem 0;
            font-size: 2rem;
            color: #ffd166;
        }
        .rating-form button {
            width: 100%;
            padding: 0.8rem;
            background-color: #e63946;
            color: white;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
        }
        .related-links a {
            display: block;
            padding: 0.8rem;
            margin-bottom: 0.8rem;
            background-color: #f8f9fa;
            border-radius: 8px;
            border-left: 4px solid #26d0ce;
            transition: all 0.3s;
        }
        .related-links a:hover {
            background-color: #e9ecef;
            border-left-color: #1a2980;
            padding-left: 1.2rem;
        }
        .comments-section {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            margin-top: 3rem;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        .comment-form input,
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            margin-bottom: 1.2rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
        }
        .comment-form textarea { min-height: 150px; resize: vertical; }
        .comment-form button {
            padding: 1rem 2.5rem;
            background: linear-gradient(to right, #1a2980, #26d0ce);
            color: white;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            font-size: 1.1rem;
        }
        .comment-list { margin-top: 3rem; }
        .comment {
            padding: 1.5rem;
            border-bottom: 1px solid #eee;
            margin-bottom: 1.5rem;
        }
        .comment-author { font-weight: 700; color: #1a2980; }
        .comment-date { font-size: 0.9rem; color: #888; margin-left: 1rem; }
        .site-footer {
            background: #1a2980;
            color: white;
            padding: 3rem 0 1.5rem;
            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;
            color: white;
        }
        .footer-links a {
            color: #ccc;
            display: block;
            margin-bottom: 0.8rem;
        }
        .footer-links a:hover { color: #ffd166; }
        friend-link {
            display: block;
            color: #ffd166;
            font-weight: 600;
            margin: 1rem 0;
            font-size: 1.1rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2c5aa0;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #1a2980;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav.active ul { display: flex; }
            .burger { display: flex; }
            .burger.active span:nth-child(1) { transform: rotate(45deg) translate(8px, 8px); }
            .burger.active span:nth-child(2) { opacity: 0; }
            .burger.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -7px); }
            h1 { font-size: 2.2rem; }
            .article-content { padding: 1.5rem; }
            .main-nav ul { gap: 1rem; }
        }