* { margin: 0; padding: 0; box-sizing: border-box; }
        :root {
            --primary: #1a365d; 
            --secondary: #c53030; 
            --accent: #f6ad55; 
            --light: #f7fafc;
            --dark: #2d3748;
            --gray: #718096;
            --transition: all 0.3s ease;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background: var(--light);
            overflow-x: hidden;
        }
        a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .highlight { background-color: rgba(246, 173, 85, 0.2); padding: 0 4px; border-radius: 3px; }
        .site-header {
            background: var(--primary);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo span { color: white; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background: #edf2f7;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a { color: var(--primary); }
        .hero {
            background: linear-gradient(rgba(26, 54, 93, 0.9), rgba(26, 54, 93, 0.8)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            padding: 4rem 0;
            text-align: center;
            margin-bottom: 2rem;
        }
        .hero h1 {
            font-size: 3rem;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 1.5rem;
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .content-area { grid-template-columns: 1fr; }
        }
        .main-content h2 {
            color: var(--primary);
            border-bottom: 3px solid var(--accent);
            padding-bottom: 0.5rem;
            margin: 2.5rem 0 1.5rem;
        }
        .main-content h3 {
            color: var(--secondary);
            margin: 2rem 0 1rem;
        }
        .main-content h4 {
            color: var(--dark);
            margin: 1.5rem 0 0.8rem;
        }
        .main-content p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .main-content ul, .main-content ol {
            margin-left: 2rem;
            margin-bottom: 1.2rem;
        }
        .feature-img {
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .update-time {
            background: #e6fffa;
            padding: 1rem;
            border-left: 5px solid #38b2ac;
            margin: 2rem 0;
            font-style: italic;
        }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent);
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group { display: flex; flex-direction: column; }
        .form-group label { font-weight: 600; margin-bottom: 0.3rem; }
        .form-control {
            padding: 0.8rem;
            border: 1px solid #cbd5e0;
            border-radius: 5px;
            font-size: 1rem;
        }
        .btn {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 5px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .btn:hover {
            background: var(--accent);
            transform: translateY(-2px);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: var(--gray);
            cursor: pointer;
        }
        .stars .active { color: var(--accent); }
        .site-footer {
            background: var(--primary);
            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-section h4 {
            color: var(--accent);
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.5rem;
            color: #cbd5e0;
        }
        friend-link:hover { color: var(--accent); }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                background: var(--primary);
                padding: 2rem;
                transition: var(--transition);
                box-shadow: var(--shadow);
            }
            .main-nav.active { left: 0; }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .hero h1 { font-size: 2.2rem; }
            .content-area { gap: 2rem; }
        }