:root {
            --primary: #3a0ca3;
            --secondary: #4361ee;
            --accent: #f72585;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        body {
            background-color: #fff;
            color: var(--dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            color: white;
            padding: 1.2rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(90deg, #f72585, #4361ee);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: inherit;
        }
        .breadcrumb {
            padding: 1rem 0 0.5rem;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--secondary);
        }
        .breadcrumb span {
            margin: 0 5px;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: #ffcc00;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--accent);
            transition: width 0.3s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .search-container {
            background: var(--light);
            padding: 2rem 0;
            margin: 1.5rem 0;
            border-radius: var(--radius);
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 0;
        }
        .search-input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid var(--secondary);
            border-right: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-btn {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-btn:hover {
            background: var(--primary);
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2.5rem 0;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 5px solid var(--accent);
            padding-left: 1.5rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--gray);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary);
            background: #f0f4ff;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin-bottom: 2rem;
            border-left: 4px solid var(--secondary);
        }
        .highlight {
            background: linear-gradient(120deg, #ffcc00 0%, #ffcc00 100%);
            background-repeat: no-repeat;
            background-size: 100% 0.4em;
            background-position: 0 90%;
            padding: 0 0.2em;
            font-weight: 700;
        }
        em {
            color: var(--accent);
            font-style: italic;
        }
        strong {
            color: var(--primary);
            font-weight: 700;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 2rem auto;
            display: block;
        }
        .figure-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -1.5rem;
            margin-bottom: 2rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        blockquote {
            border-left: 4px solid var(--accent);
            padding-left: 2rem;
            margin: 2rem 0;
            font-style: italic;
            color: var(--gray);
            background: #f9f9f9;
            padding: 1.5rem 2rem;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .info-box {
            background: #e8f4fd;
            border: 1px solid #b6e0fe;
            border-radius: var(--radius);
            padding: 1.8rem;
            margin: 2rem 0;
        }
        .info-box h4 {
            color: #036;
            margin-top: 0;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .data-card {
            background: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            text-align: center;
            border-top: 4px solid var(--secondary);
        }
        .data-card h3 {
            color: var(--primary);
            font-size: 1.8rem;
            margin: 0.5rem 0;
        }
        aside {
            background: var(--light);
            padding: 2rem;
            border-radius: var(--radius);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget {
            margin-bottom: 2.5rem;
        }
        .widget h3 {
            font-size: 1.4rem;
            color: var(--dark);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ddd;
        }
        .widget ul {
            list-style: none;
            margin-left: 0;
        }
        .widget li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #ccc;
        }
        .widget li:last-child {
            border-bottom: none;
        }
        .user-interaction {
            background: #f9f9ff;
            padding: 2.5rem;
            border-radius: var(--radius);
            margin: 3rem 0;
            border: 1px solid #e0e0ff;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .interaction-form label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .interaction-form input,
        .interaction-form textarea,
        .interaction-form select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: var(--radius);
            margin-bottom: 1.2rem;
            font-size: 1rem;
        }
        .interaction-form button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: var(--radius);
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .interaction-form button:hover {
            background: var(--primary);
        }
        .star-rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #ffcc00;
        }
        .star-rating i {
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
            background: linear-gradient(90deg, #f72585, #4361ee);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
            padding: 0.8rem 1rem;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius);
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255,255,255,0.1);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        .update-time {
            text-align: center;
            color: var(--gray);
            font-style: italic;
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-area {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--dark);
                padding: 1.5rem;
                box-shadow: var(--shadow);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .header-inner {
                position: relative;
            }
            article {
                padding: 1.8rem;
            }
            .data-grid {
                grid-template-columns: 1fr;
            }
        }