:root {
            --f8a5-primary: #ff4d4f;
            --f8a5-primary-hover: #ff7875;
            --f8a5-bg: #ffffff;
            --f8a5-text: #262626;
            --f8a5-text-light: #8c8c8c;
            --f8a5-gray-bg: #f5f5f5;
            --f8a5-glass: rgba(255, 255, 255, 0.8);
            --f8a5-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --f8a5-radius: 16px;
            --f8a5-max-width: 1300px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
            color: var(--f8a5-text);
            line-height: 1.8;
            background-color: var(--f8a5-bg);
            word-break: break-word;
            overflow-wrap: break-word;
        }

        /* 导航栏设计：悬浮胶囊式 */
        .f8a5-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 16px 24px;
            transition: all 0.3s ease;
        }

        .f8a5-nav-wrapper {
            max-width: var(--f8a5-max-width);
            margin: 0 auto;
            background: var(--f8a5-glass);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: 50px;
            padding: 8px 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--f8a5-shadow);
            border: 1px solid rgba(255,255,255,0.3);
        }

        .f8a5-logo {
            flex: 0 0 auto;
            min-width: 0;
            display: flex;
            align-items: center;
        }

        .f8a5-logo img {
            height: 32px;
            width: auto;
        }

        .f8a5-nav-links {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .f8a5-nav-links li {
            min-width: 0;
        }

        .f8a5-nav-links a {
            text-decoration: none;
            color: var(--f8a5-text);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 4px;
            position: relative;
            transition: color 0.3s;
        }

        .f8a5-nav-links a:hover {
            color: var(--f8a5-primary);
        }

        .f8a5-nav-links a.active {
            color: var(--f8a5-primary);
        }

        .f8a5-nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--f8a5-primary);
            border-radius: 2px;
        }

        /* Hero 区：非对称分割设计 */
        .f8a5-hero {
            padding-top: 140px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, #fff5f5 0%, #ffffff 50%);
            min-height: 90vh;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .f8a5-container {
            max-width: var(--f8a5-max-width);
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
        }

        .f8a5-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .f8a5-hero-content {
            flex: 1 1 500px;
            min-width: 0;
        }

        .f8a5-hero-visual {
            flex: 1 1 400px;
            min-width: 0;
            position: relative;
        }

        .f8a5-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            color: #1a1a1a;
            word-break: keep-all;
        }

        .f8a5-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            color: var(--f8a5-text-light);
            margin-bottom: 48px;
            max-width: 600px;
        }

        .f8a5-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .f8a5-btn-main {
            background: linear-gradient(135deg, #ff4d4f 0%, #ff7875 100%);
            color: white;
            padding: 18px 48px;
            border-radius: 50px;
            text-decoration: none;
            font-size: 18px;
            font-weight: 600;
            box-shadow: 0 10px 20px rgba(255, 77, 79, 0.3);
            transition: all 0.3s ease;
            display: inline-block;
        }

        .f8a5-btn-main:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(255, 77, 79, 0.4);
        }

        .f8a5-version-info {
            margin-top: 16px;
            font-size: 14px;
            color: var(--f8a5-text-light);
        }

        /* 抽象视觉卡片 */
        .f8a5-visual-card {
            background: white;
            border-radius: var(--f8a5-radius);
            padding: 40px;
            box-shadow: 0 40px 80px rgba(0,0,0,0.1);
            border: 1px solid #f0f0f0;
            transform: perspective(1000px) rotateY(-10deg);
        }

        .f8a5-input-demo {
            border-bottom: 2px solid var(--f8a5-primary);
            padding-bottom: 8px;
            font-size: 24px;
            margin-bottom: 24px;
            color: #333;
        }

        .f8a5-candidate-box {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .f8a5-candidate {
            background: #f5f5f5;
            padding: 8px 16px;
            border-radius: 8px;
            font-weight: 500;
        }

        .f8a5-candidate.active {
            background: var(--f8a5-primary);
            color: white;
        }

        /* 核心特性区块 */
        .f8a5-section {
            padding: 96px 0;
            overflow: hidden;
        }

        .f8a5-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .f8a5-section-title h2 {
            font-size: clamp(2rem, 3vw, 2.5rem);
            margin-bottom: 16px;
        }

        .f8a5-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .f8a5-feature-card {
            padding: 48px;
            background: #fafafa;
            border-radius: var(--f8a5-radius);
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }

        .f8a5-feature-card:hover {
            background: white;
            border-color: #eee;
            box-shadow: var(--f8a5-shadow);
            transform: translateY(-8px);
        }

        .f8a5-feature-icon {
            width: 56px;
            height: 56px;
            background: var(--f8a5-primary);
            border-radius: 12px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }

        .f8a5-feature-card h3 {
            margin-bottom: 16px;
            font-size: 20px;
        }

        /* 动态内容区块：最新动态 */
        .f8a5-dynamic-section {
            background: #1a1a1a;
            color: white;
            padding: 96px 0;
        }

        .f8a5-dynamic-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .f8a5-article-card {
            flex: 1 1 300px;
            min-width: 0;
            background: #262626;
            padding: 32px;
            border-radius: 12px;
            border-left: 4px solid var(--f8a5-primary);
        }

        .f8a5-article-card h4 {
            margin-bottom: 12px;
            font-size: 18px;
        }

        .f8a5-article-date {
            color: #666;
            font-size: 14px;
        }

        /* 页脚设计 */
        .f8a5-footer {
            padding: 64px 0;
            background: #f9f9f9;
            border-top: 1px solid #eee;
        }

        .f8a5-footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .f8a5-footer-brand h2 {
            font-size: 24px;
            color: var(--f8a5-primary);
            margin-bottom: 16px;
        }

        .f8a5-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
        }

        .f8a5-footer-group h5 {
            margin-bottom: 24px;
            font-size: 16px;
        }

        .f8a5-footer-group ul {
            list-style: none;
        }

        .f8a5-footer-group li {
            margin-bottom: 12px;
        }

        .f8a5-footer-group a {
            text-decoration: none;
            color: var(--f8a5-text-light);
            transition: color 0.3s;
        }

        .f8a5-footer-group a:hover {
            color: var(--f8a5-primary);
        }

        .f8a5-copyright {
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px solid #eee;
            text-align: center;
            color: var(--f8a5-text-light);
            font-size: 14px;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .f8a5-nav-links {
                display: none; /* 简化移动端，实际开发中会添加汉堡菜单 */
            }
            .f8a5-hero {
                padding-top: 100px;
                text-align: center;
            }
            .f8a5-hero-grid {
                flex-direction: column;
            }
            .f8a5-btn-group {
                justify-content: center;
            }
            .f8a5-visual-card {
                transform: none;
                padding: 24px;
            }
            .f8a5-section {
                padding: 64px 0;
            }
        }