* { 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: #f9f7f1;
            background-image: linear-gradient(to bottom, #f9f7f1 0%, #e8e1d1 100%);
            max-width: 1280px;
            margin: 0 auto;
            box-shadow: 0 0 30px rgba(0,0,0,0.05);
        }
        a { color: #2a5c82; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #d35400; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 2rem; margin: 1rem 0; }
        p { margin-bottom: 1.2rem; }
        .site-header {
            background: linear-gradient(135deg, #1a3a5f 0%, #2a5c82 100%);
            color: white;
            padding: 1.5rem 2rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            border-bottom: 5px solid #d35400;
        }
        .my-logo {
            font-family: Georgia, serif;
            font-size: 2.8rem;
            font-weight: bold;
            color: #ffd166;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            letter-spacing: 2px;
        }
        .my-logo a { color: inherit; }
        .my-logo span { color: #fff; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: #eee;
            font-weight: 500;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255, 209, 102, 0.2);
            color: #ffd166;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 2rem;
            background-color: #e8e1d1;
            font-size: 0.9rem;
            border-bottom: 1px solid #ccc;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:hover { color: #d35400; }
        .search-container {
            padding: 2rem;
            background-color: #fff;
            border-bottom: 1px solid #ddd;
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #2a5c82;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
        }
        .search-btn {
            background: #2a5c82;
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #d35400; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem;
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        h1 {
            color: #1a3a5f;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            padding-bottom: 1rem;
            border-bottom: 3px solid #ffd166;
        }
        h2 {
            color: #2a5c82;
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-top: 1rem;
            border-top: 1px dashed #ccc;
        }
        h3 { color: #d35400; font-size: 1.6rem; margin: 2rem 0 1rem; }
        h4 { color: #555; font-size: 1.3rem; margin: 1.5rem 0 0.8rem; }
        .article-meta {
            color: #777;
            font-style: italic;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #eee;
        }
        .lead {
            font-size: 1.3rem;
            color: #1a3a5f;
            background-color: #f0f7ff;
            padding: 1.5rem;
            border-left: 5px solid #2a5c82;
            margin-bottom: 2.5rem;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            width: 100%;
            border-radius: 8px;
            border: 1px solid #ddd;
            margin: 2rem 0;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .highlight-box {
            background: linear-gradient(to right, #fff9e6, #ffecc7);
            border-left: 5px solid #d35400;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip { background-color: #e8f4f8; border-left-color: #2a5c82; }
        .pro-tip::before { content: "💡 Pro Tip: "; font-weight: bold; color: #d35400; }
        .strategy-list { list-style-type: none; padding-left: 0; }
        .strategy-list li {
            background: #f9f9f9;
            margin-bottom: 0.8rem;
            padding: 1rem;
            border-radius: 5px;
            border-left: 4px solid #2a5c82;
        }
        .sidebar {
            background: white;
            padding: 1.8rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar h3 {
            font-size: 1.4rem;
            color: #1a3a5f;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffd166;
            margin-bottom: 1.2rem;
        }
        .sidebar ul { list-style: none; padding-left: 0; }
        .sidebar li { margin-bottom: 0.8rem; padding-bottom: 0.8rem; border-bottom: 1px dashed #eee; }
        .sidebar a { color: #333; display: block; }
        .sidebar a:hover { color: #d35400; padding-left: 5px; }
        .rating-widget, .comment-widget {
            background: #f9f7f1;
            padding: 1.5rem;
            border-radius: 8px;
        }
        .stars { font-size: 1.8rem; color: #ffd166; margin: 0.5rem 0; }
        .rating-form label, .comment-form label { display: block; margin-top: 1rem; font-weight: bold; }
        .rating-form input, .comment-form input, .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            margin-top: 0.3rem;
            border: 1px solid #ccc;
            border-radius: 5px;
        }
        .submit-btn {
            background: #2a5c82;
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            margin-top: 1rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .submit-btn:hover { background: #d35400; }
        .site-footer {
            background: #1a3a5f;
            color: #ddd;
            padding: 3rem 2rem 2rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo { font-size: 2rem; color: #ffd166; margin-bottom: 1rem; }
        .footer-nav ul { list-style: none; }
        .footer-nav a { color: #ccc; }
        .footer-nav a:hover { color: #ffd166; }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.1);
            padding: 1rem;
            margin-bottom: 0.8rem;
            border-radius: 5px;
        }
        friend-link a { color: #ffd166; font-weight: bold; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #2a5c82;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
            .sidebar { order: -1; }
        }
        @media (max-width: 768px) {
            .site-header { flex-direction: column; text-align: center; }
            .main-nav ul { flex-direction: column; gap: 0.8rem; display: none; }
            .main-nav.active ul { display: flex; }
            .hamburger { display: block; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .search-form { flex-direction: column; }
            .search-input, .search-btn { border-radius: 50px; width: 100%; margin-bottom: 0.5rem; }
        }