* { margin: 0; padding: 0; box-sizing: border-box; }
        :root {
            --primary: #0B2265; 
            --secondary: #A6192E; 
            --accent: #FFB81C; 
            --light: #F5F7FA;
            --dark: #1A1A1A;
            --text: #333333;
            --gray: #6C757D;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--light);
            overflow-x: hidden;
        }
        h1, h2, h3, h4 { color: var(--primary); font-weight: 700; line-height: 1.3; margin-bottom: 1.5rem; }
        h1 { font-size: clamp(2.5rem, 5vw, 3.75rem); border-left: 6px solid var(--accent); padding-left: 1.5rem; margin-top: 2rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); padding-bottom: 0.75rem; border-bottom: 2px solid #eee; margin-top: 3rem; }
        h3 { font-size: 1.75rem; color: var(--secondary); margin-top: 2.5rem; }
        h4 { font-size: 1.3rem; color: var(--dark); margin-top: 2rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        a { color: var(--secondary); text-decoration: none; transition: var(--transition); border-bottom: 1px dotted transparent; }
        a:hover { color: var(--primary); border-bottom-color: var(--accent); }
        strong { color: var(--primary); font-weight: 700; }
        em { font-style: italic; color: var(--gray); }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            width: 100%;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--spacing-lg);
            margin: var(--spacing-lg) 0;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
        }
        .site-header {
            background: var(--primary);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:before {
            content: "🏟️";
            font-size: 1.8rem;
        }
        .my-logo:hover { color: var(--accent); }
        .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 { border-bottom-color: var(--accent); color: var(--accent); }
        .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; }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--primary);
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease;
                padding: 2rem;
                z-index: 999;
            }
            .main-nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
        }
        .breadcrumb {
            background: #f0f4f8;
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .breadcrumb a { color: var(--gray); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: var(--dark); }
        .main-content {
            background: white;
            padding: var(--spacing-lg);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #eee;
            margin-bottom: 2.5rem;
            color: var(--gray);
            font-size: 0.95rem;
        }
        .update-time { color: var(--secondary); font-weight: 600; }
        .featured-img {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2.5rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 3px solid var(--accent);
        }
        .sidebar {
            background: white;
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid #eee;
        }
        .sidebar-widget:last-child { border-bottom: none; }
        .widget-title {
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            padding-left: 1rem;
            border-left: 4px solid var(--secondary);
        }
        .info-box {
            background: #f8f9fa;
            border-left: 5px solid var(--secondary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .tip { background: #fff9e6; border-color: var(--accent); }
        .warning { background: #ffe6e6; border-color: #dc3545; }
        .user-input-form {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--primary);
        }
        input, textarea, select {
            width: 100%;
            padding: 0.875rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(166, 25, 46, 0.1);
        }
        .btn {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0.875rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
            text-align: center;
        }
        .btn:hover {
            background: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .btn-block { width: 100%; }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            margin: 1rem 0;
            cursor: pointer;
        }
        .star { color: #ddd; transition: var(--transition); }
        .star:hover, .star.active { color: var(--accent); }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: var(--spacing-lg) 0;
            margin-top: var(--spacing-lg);
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-lg);
        }
        .footer-widget h3 {
            color: white;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 0.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li { margin-bottom: 0.75rem; }
        .footer-links a {
            color: #ccc;
            border-bottom: none;
        }
        .footer-links a:hover { color: var(--accent); }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 0.5rem 0;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255,255,255,0.1);
            transform: translateX(5px);
        }
        friend-link a {
            color: var(--accent);
            font-weight: 600;
            border-bottom: none;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 576px) {
            .container { padding: 0 var(--spacing-sm); }
            .main-content, .sidebar { padding: var(--spacing-md); }
            h1 { padding-left: 1rem; }
            .article-meta { flex-direction: column; align-items: flex-start; gap: 1rem; }
        }
        @media print {
            .site-header, .sidebar, .user-input-form, .site-footer { display: none; }
            body { background: white; color: black; }
            .container { max-width: 100%; padding: 0; }
            a { color: black; text-decoration: underline; }
        }