* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #6c5ce7;
            --primary-dark: #4a3db8;
            --secondary: #00cec9;
            --accent: #fd79a8;
            --bg: #f8f9fa;
            --bg-card: #ffffff;
            --text: #2d3436;
            --text-light: #636e72;
            --border: #dfe6e9;
            --radius: 16px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --font: 'Segoe UI', system-ui, -apple-system, 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: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s;
        }
        a:hover {
            color: var(--primary-dark);
            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: var(--bg-card);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            font-size: 1.8rem;
            color: var(--secondary);
        }
        .my-logo:hover {
            text-decoration: none;
            color: var(--primary-dark);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: var(--bg);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-light);
            position: relative;
            padding: 4px 0;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb {
            background: var(--bg-card);
            padding: 12px 20px;
            border-bottom: 1px solid var(--border);
            font-size: 0.85rem;
            color: var(--text-light);
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            margin: 0 6px;
            color: #b2bec3;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, #a29bfe 100%);
            color: #fff;
            padding: 60px 20px 50px;
            text-align: center;
            border-radius: 0 0 var(--radius) var(--radius);
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            max-width: 860px;
            margin: 0 auto 16px;
            letter-spacing: -0.5px;
        }
        .hero p {
            font-size: 1.15rem;
            opacity: 0.92;
            max-width: 680px;
            margin: 0 auto 20px;
        }
        .hero-meta {
            display: flex;
            justify-content: center;
            gap: 28px;
            flex-wrap: wrap;
            font-size: 0.95rem;
            opacity: 0.85;
        }
        .hero-meta i {
            margin-right: 6px;
        }
        .search-section {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow);
            margin-bottom: 40px;
        }
        .search-form {
            display: flex;
            gap: 12px;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 14px 20px;
            border: 2px solid var(--border);
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 14px 28px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: var(--primary-dark);
            transform: scale(1.02);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-bottom: 50px;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 20px;
            box-shadow: var(--shadow);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 14px;
            border-bottom: 2px solid var(--bg);
            padding-bottom: 10px;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card li a {
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card li a i {
            color: var(--secondary);
            font-size: 0.8rem;
        }
        .article-body h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-top: 48px;
            margin-bottom: 16px;
            color: var(--primary);
            border-bottom: 3px solid var(--bg);
            padding-bottom: 10px;
        }
        .article-body h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--text);
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-top: 24px;
            margin-bottom: 8px;
            color: var(--text-light);
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .article-body strong {
            font-weight: 700;
            color: var(--text);
        }
        .article-body .highlight-box {
            background: linear-gradient(135deg, #f0f0ff, #e8f8f5);
            border-left: 5px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
        .article-body .highlight-box i {
            color: var(--primary);
            margin-right: 8px;
        }
        .article-body .data-table {
            overflow-x: auto;
            margin: 24px 0;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .article-body table th {
            background: var(--primary);
            color: #fff;
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
        }
        .article-body table td {
            padding: 12px 18px;
            border-bottom: 1px solid var(--border);
        }
        .article-body table tr:last-child td {
            border-bottom: none;
        }
        .article-body table tr:hover td {
            background: #f8f7ff;
        }
        .article-body .image-wrapper {
            margin: 28px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .article-body .image-wrapper figcaption {
            padding: 12px 18px;
            background: var(--bg-card);
            font-size: 0.9rem;
            color: var(--text-light);
            text-align: center;
            border-top: 1px solid var(--border);
        }
        .article-body .interview-block {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            margin: 28px 0;
            border-left: 5px solid var(--accent);
        }
        .article-body .interview-block .speaker {
            font-weight: 700;
            color: var(--accent);
        }
        .article-body .emoji-big {
            font-size: 1.4rem;
            margin-right: 6px;
        }
        .interaction-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 40px 0;
        }
        .rating-box,
        .comment-box {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
        }
        .rating-box h3,
        .comment-box h3 {
            font-size: 1.3rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin-bottom: 16px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s, transform 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f1c40f;
            transform: scale(1.1);
        }
        .rating-box button,
        .comment-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s, transform 0.15s;
        }
        .rating-box button:hover,
        .comment-box button:hover {
            background: var(--primary-dark);
            transform: scale(1.02);
        }
        .comment-box textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid var(--border);
            border-radius: 12px;
            font-size: 1rem;
            font-family: var(--font);
            resize: vertical;
            min-height: 110px;
            outline: none;
            transition: border 0.3s;
            margin-bottom: 14px;
        }
        .comment-box textarea:focus {
            border-color: var(--primary);
        }
        .comment-box input[type="text"] {
            width: 100%;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
            margin-bottom: 14px;
        }
        .comment-box input[type="text"]:focus {
            border-color: var(--primary);
        }
        .site-footer {
            background: var(--text);
            color: #dfe6e9;
            padding: 40px 20px 24px;
            margin-top: 50px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-grid h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .footer-grid p {
            font-size: 0.92rem;
            opacity: 0.8;
            line-height: 1.6;
        }
        .footer-grid a {
            color: #a29bfe;
        }
        .footer-grid a:hover {
            color: #fff;
        }
        friend-link {
            display: block;
            margin-top: 10px;
        }
        friend-link a {
            display: inline-block;
            margin-right: 16px;
            margin-bottom: 6px;
            font-size: 0.92rem;
            color: #a29bfe;
        }
        friend-link a:hover {
            color: #fff;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .copyright strong {
            color: #fff;
            opacity: 1;
        }
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--primary);
            color: #fff;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
            cursor: pointer;
            transition: transform 0.3s, background 0.3s;
            z-index: 999;
            border: none;
        }
        .back-top:hover {
            transform: translateY(-4px);
            background: var(--primary-dark);
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 12px 16px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 20px 24px;
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
                border-bottom: 2px solid var(--border);
                gap: 16px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                font-size: 1.05rem;
                padding: 8px 0;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-meta {
                gap: 16px;
                font-size: 0.85rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
            .interaction-section {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-body h2 {
                font-size: 1.6rem;
            }
            .article-body h3 {
                font-size: 1.25rem;
            }
            .article-body h4 {
                font-size: 1.05rem;
            }
            .article-body p {
                font-size: 0.98rem;
            }
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .hero {
                padding: 36px 14px 30px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 8px 12px;
            }
            .rating-box,
            .comment-box {
                padding: 18px 16px;
            }
            .star-rating label {
                font-size: 1.6rem;
            }
        }