/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #00f5ff;
    --secondary-color: #00a8cc;
    --accent-color: #ff3366;
    --success-color: #00ff88;
    --warning-color: #ffd700;
    --dark-bg: #0a0a15;
    --card-bg: rgba(16, 20, 40, 0.6);
    --text-primary: #ffffff;
    --text-secondary: #b4b8c8;
    --gradient-primary: linear-gradient(135deg, #00f5ff 0%, #00a8cc 50%, #667eea 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #ff3366 0%, #ff0066 100%);
    --glow-primary: 0 0 20px rgba(0, 245, 255, 0.3), 0 0 40px rgba(0, 245, 255, 0.2);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--dark-bg);
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 245, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(102, 126, 234, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(255, 51, 102, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 245, 255, 0.03) 2px, rgba(0, 245, 255, 0.03) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0, 245, 255, 0.03) 2px, rgba(0, 245, 255, 0.03) 4px);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 21, 0.7);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 245, 255, 0.15);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    animation: pulse 2s infinite;
    box-shadow: var(--glow-primary);
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.nav-logo h2 {
    color: var(--primary-color);
    font-weight: 800;
    font-size: 1.8rem;
    margin: 0;
}

.logo-tag {
    background: var(--gradient-accent);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 8px 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--dark-bg);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        url('https://images.unsplash.com/photo-1559757148-5c350d0d3c56?w=1920&q=80'),
        url('https://images.unsplash.com/photo-1551601651-2a8555f1a136?w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-blend-mode: overlay;
    opacity: 0.04;
    z-index: 0;
    animation: breathe 12s ease-in-out infinite;
    pointer-events: none;
    filter: brightness(0.3) contrast(0.8);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 50% 50%, rgba(0, 245, 255, 0.15) 0%, transparent 70%),
        linear-gradient(135deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.6) 100%);
    animation: breathe 8s ease-in-out infinite;
    z-index: 0;
}

@keyframes breathe {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.hero-bg-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.neural-network {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 107, 107, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 80%, rgba(102, 126, 234, 0.1) 0%, transparent 50%);
}

.neural-node {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: neuralPulse 3s ease-in-out infinite;
}

.neural-node:nth-child(1) { top: 20%; left: 10%; animation-delay: 0s; }
.neural-node:nth-child(2) { top: 30%; right: 15%; animation-delay: 0.5s; }
.neural-node:nth-child(3) { bottom: 40%; left: 20%; animation-delay: 1s; }
.neural-node:nth-child(4) { bottom: 30%; right: 25%; animation-delay: 1.5s; }
.neural-node:nth-child(5) { top: 60%; left: 50%; animation-delay: 2s; }
.neural-node:nth-child(6) { top: 70%; right: 40%; animation-delay: 2.5s; }
.neural-node:nth-child(7) { bottom: 60%; left: 70%; animation-delay: 3s; }
.neural-node:nth-child(8) { top: 40%; right: 60%; animation-delay: 3.5s; }

@keyframes neuralPulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.5); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 2;
    animation: fadeInLeft 1s ease-out;
    padding: 20px;
    border-radius: 20px;
}

/* 为hero文字区域添加背景遮罩增强可读性 */
.hero-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 20px;
    z-index: -1;
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(0, 245, 255, 0.3);
    padding: 10px 20px;
    border-radius: 50px;
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0, 245, 255, 0.2), 0 0 30px rgba(0, 0, 0, 0.5);
    animation: float 3s ease-in-out infinite;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
    text-shadow: 
        0 2px 10px rgba(0, 0, 0, 0.8),
        0 0 30px rgba(0, 245, 255, 0.5),
        0 4px 20px rgba(0, 0, 0, 0.6);
    color: #ffffff;
    position: relative;
    z-index: 2;
}

.gradient-text {
    background: linear-gradient(135deg, #00ffff 0%, #66d9ff 25%, #00a8ff 50%, #667eea 75%, #9d7eff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientShift 3s linear infinite;
    filter: brightness(1.5) saturate(1.4);
    position: relative;
    display: inline-block;
    text-shadow: 
        0 0 30px rgba(0, 255, 255, 0.5),
        0 0 60px rgba(102, 217, 255, 0.3),
        0 0 90px rgba(0, 168, 255, 0.2);
}

.gradient-text::before {
    content: '數據 · 平台 · 模型';
    position: absolute;
    left: 0;
    top: 0;
    z-index: -1;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #00ffff 0%, #66d9ff 25%, #00a8ff 50%, #667eea 75%, #9d7eff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: blur(12px) brightness(2);
    opacity: 0.8;
    animation: gradientShift 3s linear infinite;
    pointer-events: none;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
    text-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.7),
        0 1px 4px rgba(0, 0, 0, 0.5);
    position: relative;
    z-index: 2;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.hero-stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    font-family: 'JetBrains Mono', monospace;
    text-shadow: 
        0 0 20px rgba(0, 245, 255, 0.6),
        0 2px 8px rgba(0, 0, 0, 0.7);
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 14px 30px;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--glow-primary);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(0, 245, 255, 0.5), 0 0 60px rgba(0, 245, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Hero图片包装器 */
.hero-image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 24px;
    overflow: hidden;
}

.hero-main-image {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 24px;
    filter: brightness(0.7) contrast(1.1);
    transition: all 0.6s ease;
}

.hero-image:hover .hero-main-image {
    transform: scale(1.05);
    filter: brightness(0.8) contrast(1.2);
}

/* About图片包装器 */
.about-image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 24px;
    overflow: hidden;
}

.about-main-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 24px;
    filter: brightness(0.6) sepia(0.3) hue-rotate(180deg);
    transition: all 0.6s ease;
    box-shadow: 0 20px 60px rgba(0, 245, 255, 0.2);
}

.about-image:hover .about-main-image {
    transform: scale(1.03);
    filter: brightness(0.7) sepia(0.3) hue-rotate(180deg);
}

/* 医疗AI可视化 */
.medical-ai-visualization {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.scan-line {
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    animation: scan 3s linear infinite;
    box-shadow: 0 0 10px var(--primary-color);
}

@keyframes scan {
    0% { top: 0; opacity: 0; }
    50% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

.data-points {
    position: absolute;
    width: 100%;
    height: 100%;
}

.data-point {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: dataFlow 2s ease-in-out infinite;
    animation-delay: var(--delay);
}

.data-point:nth-child(1) { top: 20%; left: 20%; }
.data-point:nth-child(2) { top: 40%; right: 30%; }
.data-point:nth-child(3) { bottom: 30%; left: 40%; }
.data-point:nth-child(4) { bottom: 20%; right: 20%; }
.data-point:nth-child(5) { top: 60%; left: 60%; }

@keyframes dataFlow {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.5); }
}

.ai-brain {
    position: relative;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: 3rem;
    color: white;
    animation: brainPulse 2s ease-in-out infinite;
}

.pulse-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: pulseRing 2s ease-out infinite;
}

.pulse-ring:nth-child(2) { animation-delay: 0.5s; }
.pulse-ring:nth-child(3) { animation-delay: 1s; }

@keyframes brainPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes pulseRing {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(2); opacity: 0; }
}

/* 通用部分样式 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease-out backwards;
    animation-delay: 0.2s;
}

/* 防止移动端文本选择时的闪烁 */
@media (max-width: 768px) {
    * {
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        user-select: none;
    }
    
    input,
    textarea,
    select {
        -webkit-user-select: text;
        user-select: text;
    }
    
    p, span, h1, h2, h3, h4, h5, h6 {
        -webkit-user-select: text;
        user-select: text;
    }
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 100%);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1576091160399-112ba8d25d1f?w=1200&q=90');
    background-size: cover;
    background-position: center;
    opacity: 0.08;
    z-index: 0;
    pointer-events: none;
    filter: blur(1px);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
    width: 100%;
}

.about-content > * {
    min-width: 0;
}

.about-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    margin-top: 2rem;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text {
    width: 100%;
    position: relative;
    z-index: 1;
    animation: fadeInLeft 0.8s ease-out backwards;
    animation-delay: 0.3s;
}

.about-image {
    position: relative;
    z-index: 1;
    animation: fadeInRight 0.8s ease-out backwards;
    animation-delay: 0.4s;
}

.services > .container {
    position: relative;
    z-index: 1;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.about-image {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    width: 100%;
}

.tech-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 2rem 0;
}

.tech-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 10px;
    color: var(--primary-color);
    font-weight: 500;
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: rgba(0, 212, 255, 0.2);
    transform: translateY(-2px);
}

.tech-item i {
    font-size: 1.2rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    animation: scaleIn 0.6s ease-out backwards;
}

.stat-item:nth-child(1) { animation-delay: 0.1s; }
.stat-item:nth-child(2) { animation-delay: 0.2s; }
.stat-item:nth-child(3) { animation-delay: 0.3s; }
.stat-item:nth-child(4) { animation-delay: 0.4s; }

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.stat-item:hover::before {
    transform: scaleX(1);
}

.stat-item:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 40px rgba(0, 245, 255, 0.3), var(--glow-primary);
    background: rgba(16, 20, 40, 0.8);
}

.stat-item h4 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-family: 'JetBrains Mono', monospace;
}

.stat-item p {
    color: var(--text-secondary);
    font-weight: 500;
}

.medical-tech-visualization {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    margin: 0;
    max-width: 100%;
    pointer-events: none;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    width: 100%;
    height: 100%;
}

.grid-cell {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.grid-cell.active {
    background: var(--gradient-primary);
    animation: gridPulse 2s ease-in-out infinite;
}

@keyframes gridPulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.floating-element {
    position: absolute;
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    animation: float 4s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    top: 10%;
    right: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    bottom: 20%;
    left: 10%;
    animation-delay: 1.5s;
}

.floating-element:nth-child(3) {
    top: 50%;
    right: 20%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* 服务 */
.services {
    padding: 100px 0;
    background: var(--dark-bg);
    position: relative;
    overflow: hidden;
}

.services::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 0;
    width: 100%;
    height: 80%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(0, 245, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%);
    z-index: 0;
    pointer-events: none;
    animation: breathe 10s ease-in-out infinite;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 2.5rem;
    border-radius: 24px;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    animation: scaleIn 0.6s ease-out backwards;
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 245, 255, 0.05) 0%, rgba(102, 126, 234, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: 0;
}

.service-card:hover::after {
    opacity: 1;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }
.service-card:nth-child(5) { animation-delay: 0.5s; }
.service-card:nth-child(6) { animation-delay: 0.6s; }

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.service-card:hover::before {
    left: 100%;
}

.service-card:hover {
    transform: translateY(-12px) scale(1.02);
    border-color: var(--primary-color);
    box-shadow: 0 25px 50px rgba(0, 245, 255, 0.25), var(--glow-primary);
    background: rgba(16, 20, 40, 0.8);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
    position: relative;
    z-index: 2;
    box-shadow: var(--glow-primary);
    transition: all 0.4s ease;
    animation: rotateIn 0.6s ease-out backwards;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotateY(360deg);
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.6), var(--glow-primary);
}

.service-card:nth-child(1) .service-icon { animation-delay: 0.2s; }
.service-card:nth-child(2) .service-icon { animation-delay: 0.3s; }
.service-card:nth-child(3) .service-icon { animation-delay: 0.4s; }
.service-card:nth-child(4) .service-icon { animation-delay: 0.5s; }
.service-card:nth-child(5) .service-icon { animation-delay: 0.6s; }
.service-card:nth-child(6) .service-icon { animation-delay: 0.7s; }

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
}

.service-card:hover h3 {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 2;
}

.service-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.feature-tag {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
}

.feature-tag:hover {
    background: rgba(0, 245, 255, 0.2);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 245, 255, 0.3);
}

/* 团队 */
.team {
    padding: 100px 0;
    background: linear-gradient(135deg, #1a1f3a 0%, #0a0e27 100%);
    position: relative;
    overflow: hidden;
}

.team .container {
    position: relative;
    z-index: 1;
}

.team::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1559839734-2b71ea197ec2?w=1920&q=90');
    background-size: cover;
    background-position: center;
    opacity: 0.06;
    z-index: 0;
    pointer-events: none;
    filter: blur(2px);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 1;
}

@media (max-width: 1024px) {
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .team-grid {
        grid-template-columns: 1fr;
    }
}

.team-member {
    background: var(--card-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
    opacity: 1;
    visibility: visible;
    display: block;
    animation: fadeInUp 0.6s ease-out forwards;
}

.team-member:nth-child(1) { animation-delay: 0.1s; }
.team-member:nth-child(2) { animation-delay: 0.2s; }
.team-member:nth-child(3) { animation-delay: 0.3s; }
.team-member:nth-child(4) { animation-delay: 0.4s; }
.team-member:nth-child(5) { animation-delay: 0.5s; }
.team-member:nth-child(6) { animation-delay: 0.6s; }

.team-member::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.team-member:hover::before {
    transform: scaleX(1);
}

.team-member:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 35px rgba(0, 212, 255, 0.2);
}

.member-avatar {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2.5rem;
    position: relative;
    animation: scaleIn 0.6s ease-out backwards;
}

.team-member:nth-child(1) .member-avatar { animation-delay: 0.2s; }
.team-member:nth-child(2) .member-avatar { animation-delay: 0.3s; }
.team-member:nth-child(3) .member-avatar { animation-delay: 0.4s; }
.team-member:nth-child(4) .member-avatar { animation-delay: 0.5s; }
.team-member:nth-child(5) .member-avatar { animation-delay: 0.6s; }
.team-member:nth-child(6) .member-avatar { animation-delay: 0.7s; }

.member-avatar::after {
    content: '';
    position: absolute;
    width: 110px;
    height: 110px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    opacity: 0;
    animation: avatarPulse 2s ease-in-out infinite;
}

@keyframes avatarPulse {
    0%, 100% { opacity: 0; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); }
}

.team-member h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.member-role {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.member-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.member-expertise {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.expertise-tag {
    background: rgba(255, 107, 107, 0.1);
    color: var(--accent-color);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(255, 107, 107, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
}

.expertise-tag:hover {
    background: rgba(255, 51, 102, 0.2);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 51, 102, 0.3);
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: var(--dark-bg);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: var(--text-secondary);
}

.contact-details p a,
.footer-section p a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.contact-details p a:hover,
.footer-section p a:hover {
    color: var(--secondary-color);
    border-bottom-color: var(--primary-color);
}

.contact-form {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.contact-form h3 {
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
    background: rgba(16, 20, 40, 0.5);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    box-sizing: border-box;
}

.form-group input[type="email"] {
    -webkit-appearance: none;
}

.form-group select {
    cursor: pointer;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.15), 0 0 20px rgba(0, 245, 255, 0.2);
    background: rgba(0, 245, 255, 0.08);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
}

.form-group select optgroup {
    color: var(--primary-color);
    font-weight: 600;
    background: var(--dark-bg);
}

.form-group select option {
    color: var(--text-primary);
    background: var(--card-bg);
    padding: 10px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background: #0a0a0a;
    color: var(--text-primary);
    padding: 60px 0 20px;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1rem;
}

.footer-logo .logo-icon {
    width: 35px;
    height: 35px;
    font-size: 1rem;
}

.footer-logo h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0;
}

.footer-logo .logo-tag {
    font-size: 0.6rem;
    padding: 2px 6px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section h4 {
    color: var(--primary-color);
    font-weight: 700;
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--card-bg);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: var(--text-secondary);
    margin: 0;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* 响应式设计 - 平板和手机 */
@media (max-width: 1024px) {
    .hero-container {
        gap: 3rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 1.5rem;
    }
    
    .about-content {
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    /* 导航栏优化 */
    .nav-container {
        height: 70px;
        padding: 0 16px;
    }
    
    .nav-logo h2 {
        font-size: 1.5rem;
    }
    
    .logo-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .hamburger {
        display: flex;
        z-index: 1001;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(10, 10, 21, 0.98);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        width: 100%;
        text-align: center;
        transition: left 0.3s ease;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.5);
        padding: 2rem 0;
        border-top: 1px solid rgba(0, 245, 255, 0.2);
        max-height: calc(100vh - 70px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 0.5rem 0;
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: 1rem;
        font-size: 1.1rem;
        width: 100%;
    }
    
    /* Hero区域优化 */
    .hero {
        min-height: calc(100vh - 70px);
        padding-top: 70px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2.5rem;
        padding: 2rem 16px;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-title {
        font-size: 2.2rem;
        line-height: 1.2;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 1.5rem;
    }
    
    .hero-badge {
        font-size: 0.85rem;
        padding: 8px 16px;
        margin-bottom: 1.5rem;
    }
    
    .hero-stats {
        justify-content: space-around;
        flex-wrap: wrap;
        gap: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .stat-label {
        font-size: 0.85rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem;
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
        max-width: 100%;
        padding: 16px 24px;
        font-size: 1rem;
    }
    
    /* 关于我们区域 */
    .about {
        padding: 60px 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-text h3 {
        font-size: 1.3rem;
        margin-top: 1.5rem;
    }
    
    .level-item {
        padding: 1.2rem !important;
        margin-bottom: 1rem !important;
    }
    
    .level-item h4 {
        font-size: 1.1rem !important;
        margin-bottom: 0.5rem !important;
    }
    
    .level-item p {
        font-size: 0.9rem !important;
    }
    
    .tech-highlights {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .tech-item {
        padding: 10px 14px;
        font-size: 0.9rem;
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .stat-item {
        padding: 1.5rem 1rem;
    }
    
    .stat-item h4 {
        font-size: 2rem;
    }
    
    /* 服务区域 */
    .services {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 3rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    .service-tier {
        margin-bottom: 3rem !important;
    }
    
    .tier-header {
        margin-bottom: 2rem !important;
    }
    
    .tier-header h3 {
        font-size: 1.5rem !important;
        flex-direction: column;
        gap: 0.3rem !important;
    }
    
    .tier-header p {
        font-size: 0.95rem !important;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .service-card {
        padding: 2rem 1.5rem;
        border-radius: 20px;
        margin-bottom: 0;
    }
    
    .service-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
        margin-bottom: 1.2rem;
    }
    
    .service-card h3 {
        font-size: 1.3rem;
        margin-bottom: 0.8rem;
    }
    
    .service-card p {
        font-size: 0.95rem;
        margin-bottom: 1.2rem;
    }
    
    .service-features {
        gap: 0.4rem;
    }
    
    .feature-tag {
        font-size: 0.75rem;
        padding: 4px 10px;
    }
    
    /* 团队区域 */
    .team {
        padding: 60px 0;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .team-member {
        padding: 1.5rem;
    }
    
    .member-avatar {
        width: 90px;
        height: 90px;
        font-size: 2.2rem;
        margin-bottom: 1.2rem;
    }
    
    .team-member h3 {
        font-size: 1.2rem;
    }
    
    .member-role {
        font-size: 0.85rem;
    }
    
    .member-desc {
        font-size: 0.85rem;
    }
    
    /* 联系区域 */
    .contact {
        padding: 60px 0;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-form {
        padding: 2rem 1.5rem;
    }
    
    .contact-item {
        padding: 1.2rem;
        margin-bottom: 1.5rem;
    }
    
    .contact-icon {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
    
    .contact-details h3 {
        font-size: 1.1rem;
    }
    
    .contact-details p {
        font-size: 0.9rem;
        word-break: break-word;
    }
    
    /* 页脚 */
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    /* 医疗AI可视化 */
    .medical-ai-visualization {
        height: 350px;
    }
    
    .ai-brain {
        width: 100px;
        height: 100px;
        font-size: 2.5rem;
    }
    
    /* 医疗技术可视化 */
    .medical-tech-visualization {
        width: 250px;
        height: 250px;
    }
}

/* 小屏手机优化 */
@media (max-width: 480px) {
    /* 导航栏 */
    .nav-container {
        height: 65px;
        padding: 0 12px;
    }
    
    .nav-logo h2 {
        font-size: 1.3rem;
    }
    
    .logo-tag {
        font-size: 0.65rem;
        padding: 2px 6px;
    }
    
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }
    
    .nav-menu {
        top: 65px;
    }
    
    .hero {
        min-height: calc(100vh - 65px);
        padding-top: 65px;
    }
    
    .hero-container {
        padding: 1.5rem 12px;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 1.8rem;
        line-height: 1.15;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: 6px 14px;
    }
    
    .hero-stats {
        flex-direction: row;
        justify-content: space-around;
        gap: 1rem;
        flex-wrap: wrap;
    }
    
    .stat-number {
        font-size: 1.6rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .hero-buttons {
        gap: 0.75rem;
    }
    
    .btn {
        padding: 14px 20px;
        font-size: 0.95rem;
        min-height: 48px;
    }
    
    /* 关于我们 */
    .about {
        padding: 50px 0;
    }
    
    .section-header {
        margin-bottom: 2.5rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .section-header p {
        font-size: 0.95rem;
    }
    
    .about-text h3 {
        font-size: 1.2rem;
    }
    
    .about-text p {
        font-size: 0.95rem;
    }
    
    .level-item {
        padding: 1rem !important;
    }
    
    .level-item h4 {
        font-size: 1rem !important;
    }
    
    .level-item p {
        font-size: 0.85rem !important;
    }
    
    .stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-item {
        padding: 1.5rem 1rem;
    }
    
    .stat-item h4 {
        font-size: 1.8rem;
    }
    
    /* 服务区域 */
    .services {
        padding: 50px 0;
    }
    
    .service-tier {
        margin-bottom: 2.5rem !important;
    }
    
    .tier-header h3 {
        font-size: 1.3rem !important;
    }
    
    .tier-header p {
        font-size: 0.9rem !important;
    }
    
    .service-card {
        padding: 1.5rem 1.2rem;
        border-radius: 16px;
    }
    
    .service-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .service-card h3 {
        font-size: 1.2rem;
    }
    
    .service-card p {
        font-size: 0.9rem;
    }
    
    .feature-tag {
        font-size: 0.7rem;
        padding: 3px 8px;
    }
    
    /* 团队 */
    .team {
        padding: 50px 0;
    }
    
    .team-member {
        padding: 1.2rem;
    }
    
    .member-avatar {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
    
    /* 联系 */
    .contact {
        padding: 50px 0;
    }
    
    .contact-form {
        padding: 1.5rem 1.2rem;
    }
    
    .contact-form h3 {
        font-size: 1.3rem;
        margin-bottom: 1.5rem;
    }
    
    .form-group {
        margin-bottom: 1.2rem;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 14px 16px;
        font-size: 1rem;
        min-height: 48px;
        -webkit-appearance: none;
        -moz-appearance: none;
        appearance: none;
        border-radius: 10px;
    }
    
    .form-group select {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2300f5ff' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 16px center;
        padding-right: 40px;
    }
    
    .form-group textarea {
        min-height: 120px;
        resize: vertical;
    }
    
    .contact-form .btn {
        width: 100%;
        margin-top: 0.5rem;
    }
    
    .contact-item {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .contact-icon {
        width: 44px;
        height: 44px;
        font-size: 1rem;
        min-width: 44px;
        min-height: 44px;
    }
    
    .contact-details h3 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .contact-details p {
        font-size: 0.9rem;
        word-break: break-word;
        line-height: 1.6;
    }
    
    .contact-details a {
        color: var(--primary-color);
        text-decoration: none;
        word-break: break-all;
    }
    
    /* 页脚 */
    .footer {
        padding: 35px 0 15px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    .footer-logo h3 {
        font-size: 1.3rem;
    }
    
    .footer-section {
        margin-bottom: 1.5rem;
    }
    
    .footer-section h3,
    .footer-section h4 {
        font-size: 1.1rem;
    }
    
    .footer-section p,
    .footer-section ul li {
        font-size: 0.9rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    /* 可视化 */
    .medical-ai-visualization {
        height: 300px;
    }
    
    .ai-brain {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
    
    .medical-tech-visualization {
        width: 200px;
        height: 200px;
    }
}

/* 横屏手机优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .hero-container {
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-direction: row;
        justify-content: center;
    }
}

/* 图片优化 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

.hero-main-image,
.about-main-image {
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

@media (max-width: 768px) {
    .hero-main-image {
        height: 350px;
        object-fit: cover;
    }
    
    .about-main-image {
        height: 300px;
        object-fit: cover;
    }
    
    .hero-image-wrapper,
    .about-image-wrapper {
        border-radius: 16px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-form {
        order: -1;
    }
}

@media (max-width: 480px) {
    .hero-main-image {
        height: 300px;
    }
    
    .about-main-image {
        height: 250px;
    }
}

/* 触摸优化 */
@media (hover: none) and (pointer: coarse) {
    * {
        -webkit-tap-highlight-color: rgba(0, 245, 255, 0.15);
    }
    
    .btn,
    .nav-link,
    .service-card,
    .team-member,
    .contact-item,
    .tech-item,
    .feature-tag,
    .expertise-tag {
        -webkit-tap-highlight-color: rgba(0, 245, 255, 0.2);
        tap-highlight-color: rgba(0, 245, 255, 0.2);
    }
    
    .btn:active,
    .nav-link:active {
        transform: scale(0.97);
        opacity: 0.9;
    }
    
    .service-card:active {
        transform: translateY(-3px) scale(0.98);
    }
    
    .feature-tag:active,
    .expertise-tag:active {
        transform: scale(0.95);
    }
    
    /* 增加触摸目标大小 */
    .hamburger {
        padding: 12px;
        margin: -12px;
        min-width: 44px;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .nav-link {
        min-height: 48px;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 1.2rem 1rem;
    }
    
    .btn {
        min-height: 48px;
        padding: 14px 24px;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        min-height: 48px;
    }
    
    /* 禁用双击缩放 */
    .service-card,
    .team-member,
    .stat-item {
        touch-action: manipulation;
    }
}

/* 高性能设备优化 */
@media (min-width: 769px) and (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 滚动动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-10deg) scale(0.9);
    }
    to {
        opacity: 1;
        transform: rotate(0deg) scale(1);
    }
}

@keyframes slideInFromBottom {
    from {
        opacity: 0;
        transform: translateY(100px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

.fade-in-left {
    animation: fadeInLeft 0.8s ease-out forwards;
}

.fade-in-right {
    animation: fadeInRight 0.8s ease-out forwards;
}

.scale-in {
    animation: scaleIn 0.8s ease-out forwards;
}

.rotate-in {
    animation: rotateIn 0.8s ease-out forwards;
}

.slide-in-bottom {
    animation: slideInFromBottom 0.8s ease-out forwards;
}

/* 初始隐藏，等待动画触发 */
.animate-on-scroll {
    opacity: 0;
}

/* 团队成员始终可见，不受animate-on-scroll影响 */
.team-member.animate-on-scroll {
    opacity: 1 !important;
    visibility: visible !important;
}

/* 数字计数动画 */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-number,
.stat-item h4 {
    animation: countUp 0.8s ease-out;
}

/* 图标旋转动画 */
@keyframes iconSpin {
    0% {
        transform: rotate(0deg) scale(1);
    }
    50% {
        transform: rotate(180deg) scale(1.1);
    }
    100% {
        transform: rotate(360deg) scale(1);
    }
}

.service-card:hover .service-icon i {
    animation: iconSpin 0.6s ease-in-out;
}

/* 标签闪烁效果 */
@keyframes tagGlow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(0, 245, 255, 0.3);
    }
    50% {
        box-shadow: 0 0 15px rgba(0, 245, 255, 0.6);
    }
}

.feature-tag:hover,
.expertise-tag:hover {
    animation: tagGlow 1.5s ease-in-out infinite;
}

/* 卡片加载动画 */
@keyframes cardSlideIn {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 悬浮粒子效果 */
@keyframes particleMove {
    0% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    50% {
        opacity: 0.8;
    }
    100% {
        transform: translate(var(--tx, 100px), var(--ty, -100px)) scale(0.5);
        opacity: 0;
    }
}

.particle {
    animation: particleMove 8s linear infinite;
}

/* 渐变文字动画 */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.gradient-text {
    background-size: 200% auto;
    animation: gradientShift 3s linear infinite;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 脉冲动画 */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* 增强的视觉效果 */
section {
    position: relative;
    z-index: 1;
}

/* 团队成员动画已在上面定义，此处移除重复定义 */

.contact-item {
    background: rgba(16, 20, 40, 0.4);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.contact-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 245, 255, 0.15);
    transform: translateX(5px);
}

/* 增强网格线效果 */
.tech-grid {
    opacity: 0.6;
    filter: blur(0.5px);
}

/* 优化文本可读性 */
h1, h2, h3, h4 {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 添加渐变边框效果 */
.service-card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 24px;
    padding: 1px;
    background: var(--gradient-primary);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.service-card:hover::after {
    opacity: 0.5;
}

/* 三个层级样式 */
.service-tier {
    margin-bottom: 5rem;
    position: relative;
}

.service-tier:not(:last-child)::after {
    content: '';
    position: absolute;
    bottom: -2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 2rem;
    background: linear-gradient(to bottom, var(--primary-color), transparent);
    opacity: 0.3;
}

.tier-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.tier-header h3 {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
}

.tier-header h3::before,
.tier-header h3::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0.3;
}

.tier-header h3::before {
    left: -80px;
}

.tier-header h3::after {
    right: -80px;
}

@media (max-width: 768px) {
    .tier-header h3::before,
    .tier-header h3::after {
        display: none;
    }
}