:root {
            --primary-blue: #1e3a8a;
            --secondary-gold: #f59e0b;
            --accent-green: #10b981;
            --light-bg: #f8fafc;
            --dark-text: #1f2937;
            --light-text: #6b7280;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --border-radius: 12px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: var(--dark-text);
            background-color: var(--light-bg);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-blue) 0%, #1e40af 100%);
            color: white;
            padding: 1.2rem 2rem;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.5rem;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .logo-icon {
            color: var(--secondary-gold);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--secondary-gold);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--secondary-gold);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            max-width: 1280px;
            margin: 1rem auto 0;
            padding: 0 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--secondary-gold);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-container {
            max-width: 1280px;
            margin: 2rem auto;
            padding: 0 2rem;
        }
        .search-box {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-box input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-box button {
            background: var(--accent-green);
            color: white;
            border: none;
            padding: 0 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background: #0da271;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .main-content {
            background: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 3px solid var(--secondary-gold);
            padding-bottom: 1.5rem;
        }
        .article-header h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            color: var(--primary-blue);
            margin-bottom: 1rem;
        }
        .meta {
            color: var(--light-text);
            font-size: 0.95rem;
            display: flex;
            gap: 1rem;
        }
        .meta i {
            margin-right: 0.5rem;
        }
        .hero-image {
            margin: 2rem 0;
            position: relative;
            overflow: hidden;
            border-radius: var(--border-radius);
        }
        .hero-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .hero-image:hover img {
            transform: scale(1.03);
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: var(--light-text);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        h2, h3 {
            color: var(--primary-blue);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h2 {
            font-size: 2rem;
            border-left: 5px solid var(--secondary-gold);
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark-text);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.05rem;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary-blue);
            background: #eff6ff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--accent-green);
        }
        .highlight {
            background: linear-gradient(120deg, #fef3c7 0%, #fef3c7 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .interactive-module {
            background: #f0f9ff;
            border: 2px dashed var(--primary-blue);
            border-radius: var(--border-radius);
            padding: 2rem;
            margin: 2.5rem 0;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        .module-title i {
            color: var(--secondary-gold);
            font-size: 1.8rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .rating-stars i {
            color: #d1d5db;
            cursor: pointer;
            font-size: 1.5rem;
            transition: color 0.2s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: var(--secondary-gold);
        }
        textarea, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 1rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e1;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        textarea:focus, input:focus {
            outline: none;
            border-color: var(--primary-blue);
        }
        button, .btn {
            background: var(--primary-blue);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: var(--secondary-gold);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .btn-secondary {
            background: var(--accent-green);
        }
        .widget {
            background: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .widget h3 {
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid #e5e7eb;
        }
        .link-list {
            list-style: none;
            margin: 0;
        }
        .link-list li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #e5e7eb;
        }
        .link-list a {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            color: var(--dark-text);
        }
        .link-list a:hover {
            color: var(--primary-blue);
        }
        .link-list i {
            color: var(--accent-green);
        }
        .site-footer {
            background: var(--dark-text);
            color: white;
            margin-top: 4rem;
            padding: 3rem 2rem 1.5rem;
        }
        .footer-container {
            max-width: 1280px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
            color: var(--secondary-gold);
        }
        .footer-section h4 {
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            color: var(--secondary-gold);
            position: relative;
            padding-bottom: 0.5rem;
        }
        .footer-section h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--accent-green);
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #cbd5e1;
            transition: color 0.3s;
        }
        friend-link a:hover {
            color: var(--secondary-gold);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #374151;
            color: #9ca3af;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .sidebar {
                order: -1;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0;
            }
            .main-nav.active ul {
                display: flex;
            }
            .main-nav li {
                width: 100%;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .main-nav a {
                display: block;
                padding: 1rem 0;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 2rem;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .container, .search-container, .breadcrumb {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .main-content {
                padding: 1.5rem;
            }
        }