:root {
            --primary-dark: #1a365d;
            --primary-main: #2d4a8a;
            --primary-light: #4f83cc;
            --accent-warm: #d97706;
            --accent-cool: #0e9f6e;
            --neutral-light: #f8fafc;
            --neutral-mid: #e2e8f0;
            --neutral-dark: #2d3748;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --border-radius: 8px;
            --transition: all 0.3s ease;
            font-size: 16px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        body {
            background-color: var(--neutral-light);
            color: var(--text-primary);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-main);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-warm);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-main));
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #fff;
            transform: scale(1.02);
        }
        .my-logo i {
            color: var(--accent-warm);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .nav-desktop a:hover {
            text-decoration: none;
            border-bottom-color: var(--accent-warm);
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: var(--primary-dark);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background-color: var(--neutral-mid);
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary-main);
        }
        .main-content {
            flex: 1;
            padding: 2rem 0;
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            background-color: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .article-body h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .article-body h2 {
            font-size: 2rem;
            color: var(--primary-main);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--neutral-mid);
        }
        .article-body h3 {
            font-size: 1.5rem;
            color: var(--neutral-dark);
            margin: 2rem 0 1rem;
        }
        .article-body h4 {
            font-size: 1.2rem;
            color: var(--text-secondary);
            margin: 1.5rem 0 0.8rem;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-body strong {
            color: var(--accent-warm);
            font-weight: 700;
        }
        .article-body em {
            color: var(--accent-cool);
            font-style: italic;
        }
        .featured-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .highlight-box {
            background: linear-gradient(to right, #fef3c7, #fde68a);
            border-left: 5px solid var(--accent-warm);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background-color: white;
            padding: 1.8rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .widget h3 {
            color: var(--primary-main);
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid var(--neutral-mid);
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        button, .btn {
            background-color: var(--primary-main);
            color: white;
            border: none;
            padding: 0.9rem 1.5rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            text-align: center;
        }
        button:hover, .btn:hover {
            background-color: var(--primary-dark);
            text-decoration: none;
        }
        .star-rating {
            display: flex;
            justify-content: space-between;
            font-size: 1.8rem;
            color: var(--neutral-mid);
            cursor: pointer;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #fbbf24;
        }
        .site-footer {
            background-color: var(--primary-dark);
            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 {
            font-size: 1.2rem;
            margin-bottom: 1.2rem;
            color: var(--accent-warm);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links a {
            color: var(--neutral-mid);
            display: block;
            padding: 0.4rem 0;
        }
        .footer-links a:hover {
            color: white;
        }
        friend-link {
            display: inline-block;
            background-color: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: 4px;
            margin: 0.3rem;
        }
        friend-link a {
            color: #90cdf4;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: var(--neutral-mid);
            font-size: 0.9rem;
        }
        .text-center { text-align: center; }
        .mt-2 { margin-top: 2rem; }
        .mb-2 { margin-bottom: 2rem; }
        .emoji { font-size: 1.2em; }