* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .py-1 { padding-top: 1rem; padding-bottom: 1rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }
        .py-3 { padding-top: 3rem; padding-bottom: 3rem; }
        .my-2 { margin-top: 2rem; margin-bottom: 2rem; }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .highlight { background-color: #fff9c4; padding: 0.2em 0.4em; border-radius: 3px; }
        .site-header {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: #ffeb3b;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover { color: #fff; transform: scale(1.02); }
        .my-logo i { font-size: 2rem; }
        .nav-desktop { display: flex; gap: 1.5rem; }
        @media (max-width: 768px) { .nav-desktop { display: none; } }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .nav-desktop a:hover { background-color: rgba(255,255,255,0.2); }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) { .hamburger { display: block; } }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #1a237e;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            padding: 0.8rem 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .nav-mobile a:hover { background-color: rgba(255,255,255,0.1); }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e8eaf6;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #283593; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .hero {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            padding: 3rem 1rem;
            border-radius: 0 0 20px 20px;
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        @media (max-width: 768px) { h1 { font-size: 2.2rem; } }
        .lead {
            font-size: 1.2rem;
            color: #555;
            max-width: 800px;
            margin: 0 auto 1.5rem;
        }
        .search-bar {
            max-width: 600px;
            margin: 2rem auto;
            background: white;
            border-radius: 50px;
            padding: 0.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            display: flex;
        }
        .search-input {
            flex: 1;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background: #ff9800;
            color: white;
            border: none;
            border-radius: 50px;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #f57c00; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) { .main-content { grid-template-columns: 1fr; } }
        article { background: white; padding: 2.5rem; border-radius: 15px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        h2 { color: #283593; margin: 2rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 3px solid #ffeb3b; font-size: 1.8rem; }
        h3 { color: #5c6bc0; margin: 1.8rem 0 1rem; font-size: 1.5rem; }
        h4 { color: #7986cb; margin: 1.5rem 0 0.8rem; font-size: 1.2rem; }
        p { margin-bottom: 1.2rem; }
        ul, ol { margin-left: 1.5rem; margin-bottom: 1.2rem; }
        blockquote {
            border-left: 4px solid #ff9800;
            padding-left: 1.5rem;
            margin: 1.5rem 0;
            font-style: italic;
            color: #555;
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .sidebar { background: white; padding: 1.5rem; border-radius: 15px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        .sidebar h3 { font-size: 1.3rem; }
        .link-list { list-style: none; margin-left: 0; }
        .link-list li { margin-bottom: 0.8rem; }
        .link-list a {
            color: #283593;
            text-decoration: none;
            display: block;
            padding: 0.7rem 1rem;
            background-color: #f5f7ff;
            border-radius: 8px;
            transition: all 0.3s;
        }
        .link-list a:hover {
            background-color: #e8eaf6;
            transform: translateX(5px);
            border-left: 4px solid #ff9800;
        }
        .rating-section, .comment-section {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 2rem 0;
        }
        .stars { display: flex; gap: 5px; margin: 1rem 0; }
        .star { font-size: 2rem; color: #ddd; cursor: pointer; transition: color 0.2s; }
        .star.active { color: #ff9800; }
        .rating-form, .comment-form { display: flex; flex-direction: column; gap: 1rem; margin-top: 1rem; }
        .form-input, .form-textarea {
            padding: 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
        }
        .form-textarea { min-height: 120px; resize: vertical; }
        .form-submit {
            background: #283593;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            align-self: flex-start;
            transition: background 0.3s;
        }
        .form-submit:hover { background: #1a237e; }
        .site-footer {
            background: #1a237e;
            color: white;
            padding: 3rem 0 1.5rem;
            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: 1.8rem; font-weight: 900; color: #ffeb3b; margin-bottom: 1rem; }
        .footer-links a { color: #bbdefb; display: block; margin-bottom: 0.5rem; text-decoration: none; }
        .footer-links a:hover { color: white; text-decoration: underline; }
        friend-link {
            display: block;
            padding: 1rem;
            background: rgba(255,255,255,0.1);
            border-radius: 8px;
            margin: 1rem 0;
            border-left: 4px solid #ff9800;
        }
        friend-link a { color: #ffeb3b; text-decoration: none; font-weight: bold; }
        friend-link a:hover { text-decoration: underline; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.2);
            font-size: 0.9rem;
            color: #bbdefb;
        }
        @media (max-width: 576px) {
            .hero { padding: 2rem 1rem; }
            article, .sidebar { padding: 1.5rem; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
        }