* { 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: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            max-width: 1600px;
            margin: 0 auto;
            padding: 0 15px;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(90deg, #2c3e50, #4a6491);
            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-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: #ffdd40;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            background: linear-gradient(45deg, #ff7e5f, #feb47b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            padding: 5px 10px;
            border-radius: 8px;
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #ecf0f1;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: #ffdd40;
            color: #2c3e50;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.95rem;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #3498db;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        article {
            background: white;
            border-radius: 15px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #ff7e5f;
            padding-left: 20px;
        }
        h2 {
            font-size: 2rem;
            color: #34495e;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 8px;
            border-bottom: 3px dashed #3498db;
        }
        h3 {
            font-size: 1.6rem;
            color: #2c3e50;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #4a6491;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .intro {
            font-size: 1.2rem;
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 5px solid #3498db;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background: linear-gradient(120deg, #ffdd40 0%, #ffdd40 100%);
            background-repeat: no-repeat;
            background-size: 100% 0.4em;
            background-position: 0 88%;
            font-weight: 700;
        }
        .feature-img {
            width: 80%;
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 15px 25px rgba(0,0,0,0.15);
            border: 5px solid white;
        }
        .internal-links {
            background: #e3f2fd;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 10px;
            list-style: none;
        }
        .internal-links a {
            color: #1565c0;
            text-decoration: none;
            padding: 8px 12px;
            display: block;
            border-radius: 6px;
            transition: background 0.3s;
        }
        .internal-links a:hover {
            background: #bbdefb;
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: #7f8c8d;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        .sidebar {
            background: white;
            border-radius: 15px;
            padding: 2rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget {
            margin-bottom: 2.5rem;
        }
        .widget h3 {
            font-size: 1.4rem;
            color: #2c3e50;
            margin-bottom: 1.2rem;
            padding-bottom: 8px;
            border-bottom: 2px solid #ff7e5f;
        }
        .search-form input {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            margin-bottom: 10px;
        }
        .search-form button {
            width: 100%;
            padding: 12px;
            background: linear-gradient(90deg, #2c3e50, #4a6491);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: linear-gradient(90deg, #4a6491, #2c3e50);
        }
        .rating-widget .stars {
            font-size: 1.8rem;
            color: #ffdd40;
            margin: 10px 0;
        }
        .rating-widget button {
            background: #27ae60;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 8px;
            cursor: pointer;
            width: 100%;
            font-weight: bold;
            margin-top: 10px;
        }
        .comment-form textarea {
            width: 100%;
            padding: 12px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            margin-bottom: 10px;
            min-height: 120px;
        }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            border-radius: 15px 15px 0 0;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        friend-link {
            display: block;
            margin: 10px 0;
        }
        friend-link a {
            color: #ffdd40;
            text-decoration: none;
            padding: 5px 0;
            display: inline-block;
            transition: color 0.3s;
        }
        friend-link a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6491;
            font-size: 0.95rem;
            color: #bdc3c7;
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .main-nav { width: 100%; display: none; margin-top: 1rem; }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; gap: 0.5rem; }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            article, .sidebar { padding: 1.5rem; }
        }
        a { transition: color 0.3s ease; }
        button, input, textarea { transition: all 0.3s ease; }
        .feature-img:hover {
            transform: translateY(-10px) scale(1.02);
            box-shadow: 0 25px 40px rgba(0,0,0,0.2);
            transition: transform 0.5s, box-shadow 0.5s;
        }