* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --bg: #f7f3ee;
            --surface: #ffffff;
            --primary: #b84a2c;
            --primary-dark: #8c331c;
            --secondary: #2c3e4e;
            --accent: #e8b84b;
            --text: #1e1e1e;
            --text-light: #4a4a4a;
            --border: #d6cec4;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --radius: 12px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            padding: 0 16px;
        }
        .wrapper {
            max-width: 1200px;
            margin: 0 auto;
            background: var(--surface);
            box-shadow: var(--shadow);
            border-radius: var(--radius);
            padding: 24px 28px 16px;
            margin-top: 20px;
            margin-bottom: 40px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            display: block;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.6em;
            margin-bottom: 0.5em;
            color: var(--secondary);
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.2em;
            color: var(--primary-dark);
            border-left: 6px solid var(--accent);
            padding-left: 18px;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 2px solid var(--border);
            padding-bottom: 6px;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.1rem;
            color: var(--text-light);
        }
        p {
            margin-bottom: 1.2em;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo a {
            color: var(--primary);
            text-decoration: none;
        }
        .my-logo a:hover {
            color: var(--primary-dark);
        }
        .my-logo i {
            font-size: 2rem;
            color: var(--accent);
        }
        .header-top {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .nav-bar {
            display: flex;
            gap: 20px;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-bar a {
            font-weight: 600;
            font-size: 0.95rem;
            padding: 6px 0;
            position: relative;
            color: var(--secondary);
        }
        .nav-bar a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .nav-bar a:hover::after {
            width: 100%;
        }
        .nav-bar a:hover {
            text-decoration: none;
            color: var(--primary);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: var(--secondary);
            padding: 4px 8px;
        }
        #nav-toggle {
            display: none;
        }
        .nav-mobile {
            display: none;
            width: 100%;
            flex-direction: column;
            gap: 12px;
            padding: 16px 0 8px;
            border-top: 1px solid var(--border);
            margin-top: 12px;
        }
        .nav-mobile a {
            font-weight: 600;
            font-size: 1rem;
            padding: 6px 0;
            color: var(--secondary);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.85rem;
            padding: 12px 0 4px;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text);
        }
        .search-box {
            display: flex;
            gap: 8px;
            max-width: 400px;
            margin: 18px 0 10px;
        }
        .search-box input {
            flex: 1;
            padding: 10px 16px;
            border: 1px solid var(--border);
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border var(--transition);
            background: var(--bg);
        }
        .search-box input:focus {
            border-color: var(--primary);
        }
        .search-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0 20px;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition);
        }
        .search-box button:hover {
            background: var(--primary-dark);
        }
        .interactive-area {
            display: flex;
            flex-wrap: wrap;
            gap: 24px 40px;
            background: var(--bg);
            padding: 24px 28px;
            border-radius: var(--radius);
            margin: 32px 0 20px;
        }
        .rating-wrap,
        .comment-wrap {
            flex: 1 1 240px;
        }
        .rating-wrap h3,
        .comment-wrap h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .star-group {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: var(--accent);
            cursor: pointer;
            margin: 6px 0 10px;
        }
        .star-group i {
            transition: transform 0.15s, color 0.15s;
        }
        .star-group i:hover {
            transform: scale(1.2);
            color: #d49a2a;
        }
        .rating-wrap form,
        .comment-wrap form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .rating-wrap form input[type="number"] {
            width: 80px;
            padding: 6px 10px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 1rem;
        }
        .rating-wrap form button,
        .comment-wrap form button {
            align-self: flex-start;
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
        }
        .rating-wrap form button:hover,
        .comment-wrap form button:hover {
            background: var(--primary-dark);
        }
        .comment-wrap textarea {
            width: 100%;
            min-height: 80px;
            padding: 12px;
            border: 1px solid var(--border);
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: var(--font);
            resize: vertical;
            background: #fff;
        }
        .comment-wrap textarea:focus {
            border-color: var(--primary);
            outline: none;
        }
        .toc {
            background: var(--bg);
            padding: 18px 24px;
            border-radius: var(--radius);
            margin: 24px 0 28px;
        }
        .toc h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .toc ul {
            columns: 2 220px;
            list-style: none;
            padding-left: 0;
            margin: 10px 0 0;
        }
        .toc li {
            padding: 4px 0;
        }
        .toc a {
            font-weight: 500;
        }
        .feature-img {
            margin: 28px 0 24px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .feature-img figcaption {
            font-size: 0.85rem;
            color: var(--text-light);
            padding: 8px 12px;
            background: var(--bg);
            text-align: center;
        }
        .related-links {
            background: var(--bg);
            padding: 18px 24px;
            border-radius: var(--radius);
            margin: 24px 0;
        }
        .related-links h4 {
            margin-top: 0;
        }
        .related-links ul {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 18px;
            list-style: none;
            padding: 0;
        }
        .related-links li::before {
            content: '▸ ';
            color: var(--primary);
        }
        friend-link {
            display: block;
            padding: 18px 0 8px;
            border-top: 1px solid var(--border);
            margin-top: 32px;
            font-size: 0.95rem;
        }
        friend-link a {
            font-weight: 600;
        }
        .footer-copyright {
            padding: 16px 0 6px;
            font-size: 0.85rem;
            color: var(--text-light);
            text-align: center;
            border-top: 1px solid var(--border);
            margin-top: 12px;
        }
        .footer-copyright strong {
            color: var(--secondary);
        }
        @media (max-width: 820px) {
            .wrapper {
                padding: 16px 14px;
                margin-top: 12px;
            }
            h1 {
                font-size: 1.8rem;
                padding-left: 12px;
            }
            h2 {
                font-size: 1.4rem;
            }
            .header-top {
                flex-wrap: wrap;
            }
            .nav-bar {
                display: none;
            }
            .hamburger {
                display: inline-block;
            }
            #nav-toggle:checked~.nav-mobile {
                display: flex;
            }
            .toc ul {
                columns: 1;
            }
            .interactive-area {
                flex-direction: column;
                padding: 18px;
            }
            .search-box {
                max-width: 100%;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            .wrapper {
                padding: 12px 10px;
            }
            .breadcrumb {
                font-size: 0.75rem;
                gap: 4px 8px;
            }
        }
        .badge {
            background: var(--accent);
            color: var(--secondary);
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 700;
            display: inline-block;
        }
        .highlight {
            background: #fef2d6;
            padding: 0 6px;
            border-radius: 4px;
        }
        .update-time {
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 8px 0 16px;
        }