:root {
            --color-primary: #8B4513;
            --color-primary-light: #A0522D;
            --color-secondary: #F5DEB3;
            --color-accent: #FFD700;
            --color-accent-dark: #DAA520;
            --color-bg: #FFF8F0;
            --color-bg-card: #FFFFFF;
            --color-text: #2C1810;
            --color-text-light: #6B4C3B;
            --color-border: #E8D5C4;
            --color-success: #4CAF50;
            --color-error: #E74C3C;
            --color-star: #FFB800;
            --font-primary: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-heading: 'Georgia', 'Times New Roman', serif;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --radius: 12px;
            --radius-sm: 8px;
            --max-width: 1200px;
            --content-width: 800px;
            --transition: 0.3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-primary);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--color-primary-light);
            text-decoration-thickness: 2px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            color: var(--color-text);
            line-height: 1.3;
            margin-top: 1.6em;
            margin-bottom: 0.5em;
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
            margin-top: 0;
            border-bottom: 3px solid var(--color-accent);
            padding-bottom: 0.3em;
        }
        h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.2rem);
            border-left: 4px solid var(--color-accent);
            padding-left: 0.7em;
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
        }
        h4 {
            font-size: clamp(1rem, 2vw, 1.25rem);
            font-style: italic;
        }
        p {
            margin-bottom: 1.2em;
        }
        .text-lead {
            font-size: 1.15rem;
            color: var(--color-text-light);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #fff;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 16px;
        }
        .my-logo {
            font-family: var(--font-heading);
            font-size: clamp(1.3rem, 3vw, 2rem);
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.02em;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        }
        .my-logo:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .my-logo i {
            font-size: 1.2em;
            color: var(--color-accent);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            font-size: 1.5rem;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-menu li a {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-menu li a:hover,
        .nav-menu li a:focus {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            text-decoration: none;
        }
        .breadcrumb {
            background: rgba(255, 255, 255, 0.06);
            padding: 8px 20px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 6px;
            opacity: 0.5;
        }
        .main-content {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .content-body {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .article-header {
            margin-bottom: 2.5em;
        }
        .article-header .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-top: 0.8em;
        }
        .article-header .meta i {
            margin-right: 4px;
        }
        .last-updated {
            font-weight: 600;
            color: var(--color-primary);
        }
        .featured-image {
            border-radius: var(--radius);
            box-shadow: var(--shadow-md);
            margin: 1.8em 0;
            background: var(--color-bg-card);
            overflow: hidden;
        }
        .featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 12px 18px;
            font-size: 0.85rem;
            color: var(--color-text-light);
            background: var(--color-secondary);
            font-style: italic;
        }
        .info-box {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-left: 5px solid var(--color-accent);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            margin: 1.8em 0;
            box-shadow: var(--shadow-sm);
        }
        .info-box strong {
            color: var(--color-primary);
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5em 0;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: var(--color-bg-card);
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--color-border);
        }
        th {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background: #faf5ef;
        }
        tr:hover {
            background: #f0e8dc;
        }
        .search-section {
            background: var(--color-bg-card);
            border-radius: var(--radius);
            padding: 28px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            margin: 2em 0;
        }
        .search-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-form {
            display: flex;
            gap: 12px;
            margin-top: 12px;
            flex-wrap: wrap;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border: 2px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 1rem;
            transition: border-color var(--transition);
            background: var(--color-bg);
        }
        .search-form input[type="text"]:focus {
            outline: none;
            border-color: var(--color-primary);
        }
        .search-form button {
            padding: 12px 28px;
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: var(--color-primary-light);
        }
        .comments-section {
            background: var(--color-bg-card);
            border-radius: var(--radius);
            padding: 28px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            margin: 2em 0;
        }
        .comments-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comment-form textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-family: var(--font-primary);
            resize: vertical;
            min-height: 100px;
            transition: border-color var(--transition);
            background: var(--color-bg);
        }
        .comment-form textarea:focus {
            outline: none;
            border-color: var(--color-primary);
        }
        .comment-form .form-row {
            display: flex;
            gap: 12px;
            margin-top: 12px;
            flex-wrap: wrap;
        }
        .comment-form input[type="text"] {
            flex: 1;
            min-width: 160px;
            padding: 10px 16px;
            border: 2px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            background: var(--color-bg);
            transition: border-color var(--transition);
        }
        .comment-form input[type="text"]:focus {
            outline: none;
            border-color: var(--color-primary);
        }
        .comment-form button {
            padding: 10px 24px;
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
        }
        .comment-form button:hover {
            background: var(--color-primary-light);
        }
        .rating-section {
            background: var(--color-bg-card);
            border-radius: var(--radius);
            padding: 28px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            margin: 2em 0;
        }
        .rating-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 12px 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--color-star);
        }
        .rating-form button {
            padding: 10px 24px;
            background: var(--color-accent-dark);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
            margin-top: 8px;
        }
        .rating-form button:hover {
            background: var(--color-primary);
        }
        .sidebar-card {
            background: var(--color-bg-card);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            margin-bottom: 24px;
        }
        .sidebar-card h4 {
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid var(--color-accent);
            padding-bottom: 8px;
        }
        .sidebar-links {
            list-style: none;
            padding: 0;
        }
        .sidebar-links li {
            margin-bottom: 6px;
        }
        .sidebar-links a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            font-size: 0.92rem;
            text-decoration: none;
            color: var(--color-text);
            border-bottom: 1px solid transparent;
            transition: all var(--transition);
        }
        .sidebar-links a:hover {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
            padding-left: 4px;
        }
        .sidebar-links a i {
            color: var(--color-accent-dark);
            font-size: 0.8rem;
        }
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.9);
            padding: 40px 20px 20px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        .footer-inner h4 {
            color: var(--color-accent);
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-inner a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
        }
        .footer-inner a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 4px;
        }
        .footer-links a {
            font-size: 0.9rem;
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            margin-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .copyright strong {
            color: rgba(255, 255, 255, 0.9);
        }
        friend-link {
            display: block;
            grid-column: 1 / -1;
            padding: 16px 0 8px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
        }
        friend-link a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            margin: 0 4px;
        }
        friend-link a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .sidebar .sidebar-card:last-child {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(0, 0, 0, 0.15);
                border-radius: var(--radius-sm);
                padding: 12px;
                margin-top: 8px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 10px 14px;
                width: 100%;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input[type="text"] {
                min-width: auto;
            }
            .comment-form .form-row {
                flex-direction: column;
            }
            .comment-form input[type="text"] {
                min-width: auto;
            }
            .rating-section .star-rating label {
                font-size: 1.7rem;
            }
            .breadcrumb {
                font-size: 0.78rem;
                padding: 6px 16px;
                overflow-x: auto;
                white-space: nowrap;
            }
            .main-content {
                padding: 24px 0 40px;
            }
        }
        @media (max-width: 480px) {
            .container,
            .content-grid {
                padding: 0 12px;
            }
            .header-inner {
                padding: 10px 12px;
            }
            .search-section,
            .comments-section,
            .rating-section {
                padding: 20px 16px;
            }
            .info-box {
                padding: 16px 18px;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.25rem;
            }
            .my-logo {
                font-size: 1.1rem;
            }
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .text-center {
            text-align: center;
        }
        .highlight {
            background: #fff3cd;
            padding: 0 4px;
            border-radius: 2px;
        }
        .emoji-lg {
            font-size: 1.4em;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-primary-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-primary);
        }