:root {
            --kuarrz-primary: #ff6600;
            --kuarrz-primary-dark: #e65c00;
            --kuarrz-secondary: #4a90e2;
            --kuarrz-bg-light: #fdfdfd;
            --kuarrz-bg-gray: #f7f9fc;
            --kuarrz-text-main: #2c3e50;
            --kuarrz-text-muted: #64748b;
            --kuarrz-border: #e2e8f0;
            --kuarrz-shadow: 0 10px 30px rgba(0,0,0,0.05);
            --kuarrz-radius: 16px;
            --kuarrz-max-width: 1100px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
            background-color: var(--kuarrz-bg-light);
            color: var(--kuarrz-text-main);
            line-height: 1.8;
            overflow-x: hidden;
            word-break: keep-all;
            overflow-wrap: break-word;
        }

        /* 导航栏 */
        .kuarrz-navbar {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--kuarrz-border);
            padding: 0 24px;
        }

        .kuarrz-nav-container {
            max-width: var(--kuarrz-max-width);
            margin: 0 auto;
            height: 72px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .kuarrz-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .kuarrz-logo img {
            height: 32px;
            width: auto;
            display: block;
        }

        .kuarrz-nav-menu {
            display: flex;
            list-style: none;
            gap: 24px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .kuarrz-nav-link {
            text-decoration: none;
            color: var(--kuarrz-text-main);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .kuarrz-nav-link:hover {
            color: var(--kuarrz-primary);
        }

        .kuarrz-nav-link.active {
            color: var(--kuarrz-primary);
            position: relative;
        }

        .kuarrz-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -24px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--kuarrz-primary);
            border-radius: 3px 3px 0 0;
        }

        /* Hero 搜索区 */
        .kuarrz-hero {
            padding: 160px 24px 80px;
            background: linear-gradient(135deg, #fff5f0 0%, #ffffff 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .kuarrz-hero-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .kuarrz-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3rem);
            font-weight: 800;
            color: var(--kuarrz-text-main);
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .kuarrz-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--kuarrz-text-muted);
            margin-bottom: 48px;
        }

        .kuarrz-search-box {
            background: #fff;
            padding: 8px;
            border-radius: 50px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            display: flex;
            max-width: 600px;
            margin: 0 auto;
            border: 2px solid transparent;
            transition: border-color 0.3s ease;
        }

        .kuarrz-search-box:focus-within {
            border-color: var(--kuarrz-primary);
        }

        .kuarrz-search-input {
            flex: 1;
            border: none;
            padding: 0 24px;
            font-size: 1.1rem;
            outline: none;
            background: transparent;
            min-width: 0;
        }

        .kuarrz-search-btn {
            background: var(--kuarrz-primary);
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease, transform 0.2s ease;
        }

        .kuarrz-search-btn:hover {
            background: var(--kuarrz-primary-dark);
            transform: scale(1.02);
        }

        /* 主体内容区布局 */
        .kuarrz-main-container {
            max-width: var(--kuarrz-max-width);
            margin: 64px auto;
            padding: 0 24px;
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }

        /* 侧边导航 */
        .kuarrz-sidebar {
            flex: 0 0 240px;
            min-width: 0;
        }

        .kuarrz-side-nav {
            position: sticky;
            top: 100px;
            background: var(--kuarrz-bg-gray);
            border-radius: var(--kuarrz-radius);
            padding: 16px;
        }

        .kuarrz-side-item {
            display: block;
            padding: 12px 20px;
            text-decoration: none;
            color: var(--kuarrz-text-main);
            border-radius: 12px;
            margin-bottom: 4px;
            transition: all 0.3s ease;
            font-weight: 500;
        }

        .kuarrz-side-item:hover, .kuarrz-side-item.active {
            background: #fff;
            color: var(--kuarrz-primary);
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }

        /* FAQ 内容 */
        .kuarrz-content {
            flex: 1;
            min-width: 0;
        }

        .kuarrz-faq-group {
            margin-bottom: 64px;
        }

        .kuarrz-faq-group-title {
            font-size: 1.75rem;
            margin-bottom: 24px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--kuarrz-bg-gray);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .kuarrz-accordion {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .kuarrz-card {
            background: #fff;
            border: 1px solid var(--kuarrz-border);
            border-radius: var(--kuarrz-radius);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .kuarrz-card:hover {
            border-color: var(--kuarrz-primary);
            box-shadow: var(--kuarrz-shadow);
            transform: translateY(-2px);
        }

        .kuarrz-card-header {
            padding: 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .kuarrz-card-title {
            font-weight: 600;
            font-size: 1.1rem;
            color: var(--kuarrz-text-main);
        }

        .kuarrz-card-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--kuarrz-bg-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
        }

        .kuarrz-card.open .kuarrz-card-icon {
            transform: rotate(180deg);
            background: var(--kuarrz-primary);
            color: #fff;
        }

        .kuarrz-card-body {
            padding: 0 24px 24px;
            color: var(--kuarrz-text-muted);
            display: none;
            border-top: 1px solid var(--kuarrz-bg-gray);
            padding-top: 20px;
        }

        .kuarrz-card.open .kuarrz-card-body {
            display: block;
        }

        /* 动态区块 */
        .kuarrz-dynamic-section {
            background: var(--kuarrz-bg-gray);
            padding: 80px 24px;
            border-radius: 40px;
            margin: 48px auto;
            max-width: var(--kuarrz-max-width);
        }

        .kuarrz-section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .kuarrz-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .kuarrz-article-card {
            background: #fff;
            padding: 32px;
            border-radius: var(--kuarrz-radius);
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .kuarrz-article-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.06);
        }

        .kuarrz-tag {
            background: #fff0e6;
            color: var(--kuarrz-primary);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            width: fit-content;
        }

        /* 页脚 */
        .kuarrz-footer {
            background: #1a1a1a;
            color: #fff;
            padding: 80px 24px 40px;
            margin-top: 96px;
        }

        .kuarrz-footer-grid {
            max-width: var(--kuarrz-max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            border-bottom: 1px solid #333;
            padding-bottom: 60px;
        }

        .kuarrz-footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .kuarrz-footer-text {
            color: #999;
            font-size: 0.9rem;
            max-width: 300px;
        }

        .kuarrz-footer-links h4 {
            margin-bottom: 24px;
            font-size: 1.1rem;
        }

        .kuarrz-footer-links ul {
            list-style: none;
        }

        .kuarrz-footer-links li {
            margin-bottom: 12px;
        }

        .kuarrz-footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .kuarrz-footer-links a:hover {
            color: var(--kuarrz-primary);
        }

        .kuarrz-copyright {
            max-width: var(--kuarrz-max-width);
            margin: 40px auto 0;
            text-align: center;
            color: #666;
            font-size: 0.85rem;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .kuarrz-nav-menu {
                display: none; /* 简化移动端展示 */
            }
            .kuarrz-sidebar {
                flex: 0 0 100%;
            }
            .kuarrz-side-nav {
                display: flex;
                overflow-x: auto;
                position: static;
                gap: 8px;
                padding: 8px;
                margin-bottom: 24px;
            }
            .kuarrz-side-item {
                white-space: nowrap;
                margin-bottom: 0;
            }
            .kuarrz-hero {
                padding-top: 120px;
            }
            .kuarrz-main-container {
                margin-top: 32px;
            }
        }