* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #7b68ee;
            --primary-dark: #5f4dd4;
            --secondary: #ff6ec7;
            --accent: #ffd93d;
            --bg: #f8f7ff;
            --dark: #2d2b3a;
            --text: #3a3848;
            --light: #ffffff;
            --gray: #eef0f4;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 12px 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 999;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 28px;
            font-weight: 800;
            color: var(--light);
            text-decoration: none;
            letter-spacing: 1px;
            transition: opacity 0.3s;
            font-family: 'Georgia', serif;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .my-logo i {
            color: var(--accent);
            margin-right: 6px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 30px;
            padding: 4px 12px;
            flex: 1;
            max-width: 360px;
            min-width: 200px;
        }
        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--light);
            font-size: 14px;
            width: 100%;
            padding: 6px 8px;
        }
        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }
        .search-box button {
            background: transparent;
            border: none;
            color: var(--light);
            cursor: pointer;
            font-size: 15px;
            padding: 4px;
        }
        .search-box button:hover {
            color: var(--accent);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.5);
            border-radius: 8px;
            font-size: 20px;
            color: var(--light);
            padding: 6px 12px;
            cursor: pointer;
            transition: all 0.3s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .site-nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .site-nav a {
            color: var(--light);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 20px;
            transition: background 0.3s;
            background: rgba(255, 255, 255, 0.08);
        }
        .site-nav a:hover {
            background: rgba(255, 255, 255, 0.22);
        }
        .breadcrumb {
            background: var(--light);
            padding: 10px 0;
            border-bottom: 1px solid var(--gray);
            font-size: 13px;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb li::after {
            content: '›';
            color: #a0a0b0;
            font-size: 16px;
        }
        .breadcrumb li:last-child::after {
            content: '';
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .hero {
            background: linear-gradient(135deg, #f0edff 0%, #fff5fa 100%);
            padding: 50px 0;
            text-align: center;
            border-bottom: 1px solid #e6e0f0;
        }
        .hero h1 {
            font-size: 38px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.2;
            margin-bottom: 10px;
            font-family: 'Georgia', serif;
        }
        .hero p {
            font-size: 17px;
            color: #6b6880;
            max-width: 700px;
            margin: 0 auto;
        }
        .hero .hero-tag {
            margin-top: 15px;
            font-size: 14px;
            color: #8a86a0;
        }
        .hero .hero-tag i {
            color: var(--secondary);
            margin: 0 4px;
        }
        .main-content {
            padding: 40px 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 40px;
        }
        .article-body {
            background: var(--light);
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            margin-top: 50px;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 3px solid var(--primary);
            font-family: 'Georgia', serif;
        }
        .article-body h2:first-child {
            margin-top: 0;
        }
        .article-body h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--primary-dark);
            margin-top: 32px;
            margin-bottom: 14px;
        }
        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-top: 22px;
            margin-bottom: 10px;
        }
        .article-body p {
            margin-bottom: 16px;
            text-align: justify;
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 28px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-decoration-color: rgba(123, 104, 238, 0.3);
            text-underline-offset: 3px;
            transition: all 0.2s;
        }
        .article-body a:hover {
            color: var(--primary-dark);
            text-decoration-color: var(--primary-dark);
        }
        .highlight-box {
            background: linear-gradient(135deg, #f6f3ff, #eef0fa);
            border-left: 4px solid var(--primary);
            padding: 18px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            font-style: italic;
        }
        .tips-box {
            background: #fffbf0;
            border-left: 4px solid var(--accent);
            padding: 18px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .image-figure {
            margin: 28px 0;
            text-align: center;
        }
        .image-figure img {
            max-width: 100%;
            height: auto;
            border-radius: 16px;
            box-shadow: var(--shadow);
        }
        .image-figure figcaption {
            font-size: 14px;
            color: #8a86a0;
            margin-top: 8px;
        }
        .table-responsive {
            overflow-x: auto;
            margin: 24px 0;
        }
        .table-responsive table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
        }
        .table-responsive th {
            background: var(--primary);
            color: var(--light);
            padding: 12px 16px;
            text-align: left;
        }
        .table-responsive td {
            padding: 10px 16px;
            border-bottom: 1px solid var(--gray);
        }
        .table-responsive tr:hover td {
            background: #f8f7ff;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .widget {
            background: var(--light);
            border-radius: 16px;
            padding: 24px;
            box-shadow: var(--shadow);
        }
        .widget h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .widget h3 i {
            color: var(--secondary);
        }
        .widget ul {
            list-style: none;
        }
        .widget li {
            margin-bottom: 10px;
        }
        .widget li a {
            color: var(--text);
            text-decoration: none;
            font-size: 14px;
            display: block;
            padding: 6px 10px;
            border-radius: 8px;
            transition: all 0.2s;
        }
        .widget li a:hover {
            background: #f6f3ff;
            color: var(--primary);
            padding-left: 14px;
        }
        .rating-section {
            background: var(--light);
            border-radius: 20px;
            padding: 32px;
            margin-top: 40px;
            box-shadow: var(--shadow);
        }
        .rating-section h2 {
            font-size: 24px;
            margin-bottom: 12px;
            color: var(--dark);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            margin: 12px 0;
            font-size: 28px;
            color: #d0d0dc;
        }
        .star-rating i {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating i:hover {
            color: var(--accent);
        }
        .btn {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 26px;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s;
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(95, 77, 212, 0.3);
        }
        .comment-box {
            width: 100%;
            min-height: 100px;
            padding: 14px;
            border: 1px solid #d8d8e8;
            border-radius: 12px;
            font-size: 15px;
            font-family: inherit;
            margin-bottom: 12px;
            resize: vertical;
        }
        .comment-box:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(123, 104, 238, 0.15);
        }
        .site-footer {
            background: var(--dark);
            color: #aaa8c0;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li a {
            color: #aaa8c0;
            text-decoration: none;
            font-size: 14px;
            line-height: 2;
            transition: color 0.2s;
        }
        .footer-col li a:hover {
            color: var(--accent);
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            padding: 14px 18px;
            margin: 12px 0;
            color: #aaa8c0;
            font-size: 14px;
        }
        friend-link a {
            color: var(--accent);
            text-decoration: none;
            margin: 0 4px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 14px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: 2;
            }
            .article-body {
                padding: 24px;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .site-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 6px;
                padding-top: 12px;
            }
            .site-nav.open {
                display: flex;
            }
            .site-nav a {
                padding: 10px 16px;
                border-radius: 10px;
            }
            .header-inner {
                gap: 10px;
            }
            .search-box {
                order: 3;
                max-width: 100%;
                flex: 0 0 100%;
            }
            .hero h1 {
                font-size: 28px;
            }
            .article-body {
                padding: 20px;
            }
            .article-body h2 {
                font-size: 23px;
            }
            .article-body h3 {
                font-size: 19px;
            }
            .breadcrumb ol {
                flex-wrap: wrap;
            }
        }
        @media (max-width: 480px) {
            .hero {
                padding: 30px 0;
            }
            .hero h1 {
                font-size: 24px;
            }
            .article-body {
                padding: 16px;
                border-radius: 14px;
            }
            .rating-section {
                padding: 20px;
            }
        }