*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #6a1b9a;
            --primary-dark: #4a148c;
            --primary-light: #9c27b0;
            --accent: #ff6f00;
            --accent-light: #ffa040;
            --bg: #fafafa;
            --bg-card: #ffffff;
            --text: #212121;
            --text-light: #616161;
            --text-white: #ffffff;
            --border: #e0e0e0;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.14);
            --radius: 12px;
            --radius-sm: 8px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: var(--text-white);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
            transition: opacity var(--transition);
        }
        .my-logo:hover {
            opacity: 0.88;
            text-decoration: none;
            color: var(--text-white);
        }
        .my-logo span {
            color: var(--accent-light);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-list a {
            display: block;
            padding: 8px 16px;
            color: var(--text-white);
            font-weight: 500;
            font-size: 0.92rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
        }
        .nav-list a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: var(--accent-light);
            text-decoration: none;
        }
        .hamburger-toggle {
            display: none;
        }
        .hamburger-label {
            display: none;
            cursor: pointer;
            padding: 8px 12px;
            font-size: 1.6rem;
            color: var(--text-white);
            user-select: none;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .hamburger-label:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .breadcrumb-wrap {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            padding: 10px 0;
            font-size: 0.88rem;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 6px 10px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }
        .main-wrap {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .article-body h1 {
            font-size: 2.4rem;
            line-height: 1.25;
            color: var(--primary-dark);
            margin-bottom: 8px;
            font-weight: 800;
        }
        .article-body h1 .highlight {
            color: var(--accent);
        }
        .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            color: var(--text-light);
            font-size: 0.92rem;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .meta-line i {
            margin-right: 6px;
            color: var(--primary-light);
        }
        .article-body h2 {
            font-size: 1.8rem;
            color: var(--primary-dark);
            margin-top: 48px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--primary-light);
            font-weight: 700;
        }
        .article-body h3 {
            font-size: 1.35rem;
            color: var(--primary);
            margin-top: 32px;
            margin-bottom: 12px;
            font-weight: 600;
        }
        .article-body h4 {
            font-size: 1.1rem;
            color: var(--text);
            margin-top: 24px;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 18px;
            color: var(--text);
        }
        .article-body p.lead {
            font-size: 1.15rem;
            color: var(--text-light);
            line-height: 1.9;
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        .article-body em {
            color: var(--accent);
            font-style: italic;
        }
        .article-body .block-tip {
            background: linear-gradient(135deg, #f3e5f5, #e8f5e9);
            border-left: 5px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
        .article-body .block-tip i {
            color: var(--primary);
            margin-right: 8px;
        }
        .article-body .block-alert {
            background: #fff3e0;
            border-left: 5px solid var(--accent);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
        .article-body .block-alert i {
            color: var(--accent);
            margin-right: 8px;
        }
        .featured-image-wrap {
            margin: 28px 0 32px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image-wrap img {
            width: 100%;
            height: auto;
            display: block;
        }
        .featured-image-wrap figcaption {
            background: var(--bg-card);
            padding: 12px 18px;
            font-size: 0.88rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            min-width: 600px;
        }
        .table-wrap th,
        .table-wrap td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .table-wrap th {
            background: var(--primary);
            color: var(--text-white);
            font-weight: 600;
        }
        .table-wrap tr:nth-child(even) {
            background: #f5f5f5;
        }
        .table-wrap tr:hover {
            background: #f3e5f5;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            color: var(--primary-dark);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--accent);
        }
        .sidebar-links {
            list-style: none;
        }
        .sidebar-links li {
            margin-bottom: 8px;
        }
        .sidebar-links a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: #f5f5f5;
            transition: background var(--transition), color var(--transition);
            font-size: 0.92rem;
        }
        .sidebar-links a:hover {
            background: var(--primary);
            color: var(--text-white);
            text-decoration: none;
        }
        .sidebar-links a i {
            width: 18px;
            text-align: center;
            color: var(--primary-light);
        }
        .sidebar-links a:hover i {
            color: var(--text-white);
        }
        .search-form {
            display: flex;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            outline: none;
            transition: border-color var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            padding: 10px 18px;
            background: var(--primary);
            color: var(--text-white);
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 0.95rem;
            transition: background var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid var(--border);
        }
        .feedback-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
        }
        .feedback-card h3 {
            font-size: 1.2rem;
            color: var(--primary-dark);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card h3 i {
            color: var(--accent);
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-family: var(--font);
            outline: none;
            transition: border-color var(--transition);
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--primary);
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card button {
            padding: 12px 20px;
            background: var(--primary);
            color: var(--text-white);
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: background var(--transition);
        }
        .feedback-card button:hover {
            background: var(--primary-dark);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            flex-direction: row-reverse;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            transition: color var(--transition);
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #ffc107;
        }
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-white);
            padding: 40px 0 24px;
            margin-top: 60px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        .footer-col h4 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            color: var(--accent-light);
        }
        .footer-col p,
        .footer-col li {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent-light);
        }
        friend-link {
            display: block;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.88rem;
        }
        friend-link a:hover {
            color: var(--accent-light);
        }
        .copyright {
            text-align: center;
            padding-top: 24px;
            margin-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger-label {
                display: block;
            }
            .nav-list {
                display: none;
                width: 100%;
                flex-direction: column;
                background: var(--primary-dark);
                border-radius: var(--radius);
                padding: 12px 0;
                margin-top: 8px;
            }
            .nav-list a {
                padding: 12px 20px;
            }
            .hamburger-toggle:checked~.nav-list {
                display: flex;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .meta-line {
                flex-direction: column;
                gap: 6px;
            }
            .table-wrap table {
                min-width: 100%;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .article-body h1 {
                font-size: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: var(--text-white);
            border: none;
            border-radius: 50%;
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: var(--shadow);
            transition: background var(--transition), transform var(--transition);
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .scroll-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
        }
        @media print {
            .site-header,
            .site-footer,
            .sidebar,
            .feedback-grid,
            .scroll-top,
            .search-form {
                display: none !important;
            }
            .content-grid {
                display: block;
            }
            body {
                background: #fff;
                color: #000;
            }
        }