:root {
            --f8a5-primary: #FF4B2B;
            --f8a5-secondary: #00A896;
            --f8a5-dark: #1A1A1A;
            --f8a5-light: #F8F9FA;
            --f8a5-accent: #FF9068;
            --f8a5-text: #333333;
            --f8a5-medical-blue: #E3F2FD;
            --f8a5-max-width: 1320px;
            --f8a5-transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            color: var(--f8a5-text);
            background-color: #FFFFFF;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Fluid Typography */
        h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); line-height: 1.1; font-weight: 800; white-space: normal; }
        h2 { font-size: clamp(1.8rem, 3vw + 0.5rem, 2.8rem); line-height: 1.2; font-weight: 700; white-space: normal; }
        h3 { font-size: clamp(1.2rem, 1.5vw + 0.2rem, 1.8rem); line-height: 1.3; font-weight: 600; white-space: normal; }
        p { font-size: clamp(1rem, 0.5vw + 0.8rem, 1.1rem); line-height: 1.8; }

        .f8a5-container {
            width: 100%;
            max-width: var(--f8a5-max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Navigation */
        .f8a5-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 16px 0;
            transition: var(--f8a5-transition);
        }

        .f8a5-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

        .f8a5-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

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

        .f8a5-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            align-items: center;
        }

        .f8a5-menu-item a {
            text-decoration: none;
            color: var(--f8a5-dark);
            font-weight: 500;
            font-size: 15px;
            transition: var(--f8a5-transition);
            position: relative;
            padding: 4px 0;
        }

        .f8a5-menu-item a:hover,
        .f8a5-menu-item a.f8a5-active {
            color: var(--f8a5-primary);
        }

        .f8a5-menu-item a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--f8a5-primary);
            transition: var(--f8a5-transition);
        }

        .f8a5-menu-item a:hover::after,
        .f8a5-menu-item a.f8a5-active::after {
            width: 100%;
        }

        /* Hero Section - Medical Focus */
        .f8a5-hero {
            padding: 180px 0 100px;
            background: radial-gradient(circle at 80% 20%, var(--f8a5-medical-blue) 0%, #FFFFFF 60%);
            position: relative;
            overflow: hidden;
        }

        .f8a5-hero::before {
            content: '+';
            position: absolute;
            font-size: 300px;
            color: rgba(0, 168, 150, 0.03);
            top: -50px;
            right: 0;
            font-weight: 900;
            line-height: 1;
        }

        .f8a5-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .f8a5-hero-content {
            flex: 1;
            min-width: 320px;
        }

        .f8a5-hero-tag {
            display: inline-block;
            background: var(--f8a5-secondary);
            color: #fff;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        .f8a5-hero-title span {
            color: var(--f8a5-primary);
        }

        .f8a5-hero-subtitle {
            margin: 32px 0;
            color: #666;
            max-width: 600px;
        }

        .f8a5-hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .f8a5-btn {
            display: inline-block;
            padding: 16px 40px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 700;
            transition: var(--f8a5-transition);
            text-align: center;
            cursor: pointer;
            border: none;
        }

        .f8a5-btn-primary {
            background: linear-gradient(135deg, var(--f8a5-primary), var(--f8a5-accent));
            color: #fff;
            box-shadow: 0 10px 20px rgba(255, 75, 43, 0.2);
        }

        .f8a5-btn-primary:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(255, 75, 43, 0.3);
        }

        .f8a5-hero-visual {
            flex: 1;
            min-width: 320px;
            position: relative;
        }

        .f8a5-medical-card {
            background: #fff;
            border-radius: 24px;
            padding: 40px;
            box-shadow: 0 30px 60px rgba(0,0,0,0.08);
            border-left: 8px solid var(--f8a5-secondary);
            position: relative;
            z-index: 2;
        }

        .f8a5-term-bubble {
            position: absolute;
            background: #fff;
            padding: 10px 20px;
            border-radius: 50px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            font-size: 14px;
            font-weight: 500;
            color: var(--f8a5-secondary);
            animation: f8a5-float 6s ease-in-out infinite;
        }

        @keyframes f8a5-float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-20px); }
        }

        /* Stats Section */
        .f8a5-stats {
            padding: 80px 0;
            background: var(--f8a5-dark);
            color: #fff;
        }

        .f8a5-stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 40px;
        }

        .f8a5-stat-item {
            text-align: center;
            min-width: 0;
        }

        .f8a5-stat-number {
            font-size: 48px;
            font-weight: 800;
            color: var(--f8a5-accent);
            display: block;
        }

        .f8a5-stat-label {
            font-size: 16px;
            color: rgba(255,255,255,0.7);
            margin-top: 8px;
        }

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

        .f8a5-features {
            padding: 120px 0;
        }

        .f8a5-feature-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

        .f8a5-feature-card {
            flex: 1;
            min-width: 300px;
            background: var(--f8a5-light);
            padding: 48px;
            border-radius: 20px;
            transition: var(--f8a5-transition);
            border: 1px solid transparent;
        }

        .f8a5-feature-card:hover {
            background: #fff;
            border-color: var(--f8a5-secondary);
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        }

        .f8a5-feature-icon {
            width: 64px;
            height: 64px;
            background: #fff;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 24px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            color: var(--f8a5-secondary);
        }

        /* Lexicon Categories */
        .f8a5-lexicon {
            padding: 120px 0;
            background: #f0f4f8;
            border-radius: 60px 60px 0 0;
        }

        .f8a5-category-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 20px;
            margin-top: 48px;
        }

        .f8a5-category-btn {
            background: #fff;
            padding: 20px;
            border-radius: 16px;
            text-align: center;
            font-weight: 600;
            cursor: pointer;
            transition: var(--f8a5-transition);
            border: 1px solid rgba(0,0,0,0.03);
        }

        .f8a5-category-btn:hover {
            background: var(--f8a5-primary);
            color: #fff;
        }

        /* News Section */
        .f8a5-news {
            padding: 120px 0;
        }

        .f8a5-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .f8a5-news-card {
            background: #fff;
            border: 1px solid #eee;
            border-radius: 16px;
            overflow: hidden;
            transition: var(--f8a5-transition);
        }

        .f8a5-news-card:hover {
            border-color: var(--f8a5-primary);
        }

        .f8a5-news-body {
            padding: 32px;
        }

        .f8a5-news-date {
            font-size: 14px;
            color: #999;
            margin-bottom: 12px;
            display: block;
        }

        /* Footer */
        .f8a5-footer {
            background: var(--f8a5-dark);
            color: #fff;
            padding: 80px 0 40px;
        }

        .f8a5-footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            margin-bottom: 64px;
        }

        .f8a5-footer-brand {
            flex: 2;
            min-width: 300px;
        }

        .f8a5-brand-name {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 24px;
            color: #fff;
        }

        .f8a5-footer-links {
            flex: 1;
            min-width: 150px;
        }

        .f8a5-footer-links h4 {
            margin-bottom: 24px;
            font-size: 18px;
            color: var(--f8a5-accent);
        }

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

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

        .f8a5-footer-links a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: var(--f8a5-transition);
        }

        .f8a5-footer-links a:hover {
            color: #fff;
            padding-left: 5px;
        }

        .f8a5-copyright {
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            font-size: 14px;
            color: rgba(255,255,255,0.4);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .f8a5-navbar { padding: 12px 0; }
            .f8a5-menu { display: none; } /* Mobile simple toggle would go here */
            .f8a5-hero { padding: 140px 0 60px; }
            .f8a5-hero-grid { flex-direction: column; text-align: center; }
            .f8a5-hero-btns { justify-content: center; }
            .f8a5-feature-card { padding: 32px; }
            .f8a5-medical-card { padding: 24px; }
        }