/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 支付宝蓝主色调系统 - 增强版 */
    --primary-gradient: linear-gradient(135deg, #1677ff 0%, #0958d9 100%);
    --primary-gradient-hover: linear-gradient(135deg, #4096ff 0%, #1677ff 100%);
    --secondary-gradient: linear-gradient(135deg, #40a9ff 0%, #1890ff 100%);
    --accent-gradient: linear-gradient(135deg, #69c0ff 0%, #40a9ff 100%);
    --success-gradient: linear-gradient(135deg, #52c41a 0%, #73d13d 100%);
    --warning-gradient: linear-gradient(135deg, #fa8c16 0%, #ffc53d 100%);

    /* 新增酷炫渐变 */
    --neon-gradient: linear-gradient(135deg, #1677ff 0%, #69c0ff 50%, #1677ff 100%);
    --glass-gradient: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    --cyber-gradient: linear-gradient(45deg, #1677ff, #40a9ff, #69c0ff, #1677ff);
    --hologram-gradient: linear-gradient(135deg, #1677ff 0%, #40a9ff 25%, #69c0ff 50%, #40a9ff 75%, #1677ff 100%);
    
    /* 明亮背景色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8faff;
    --bg-tertiary: #f0f4ff;
    --bg-glass: rgba(255, 255, 255, 0.1);
    
    /* 文字颜色 */
    --text-primary: #1a1d29;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-white: #ffffff;
    
    /* 增强阴影系统 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    --shadow-neon: 0 0 20px rgba(22, 119, 255, 0.4);
    --shadow-neon-strong: 0 0 30px rgba(22, 119, 255, 0.6);
    --shadow-cyber: 0 0 40px rgba(22, 119, 255, 0.3), 0 0 80px rgba(64, 169, 255, 0.2);
    --shadow-glass: 0 8px 32px rgba(31, 38, 135, 0.37);
    --shadow-floating: 0 20px 40px rgba(22, 119, 255, 0.15), 0 0 0 1px rgba(255, 255, 255, 0.1);
    
    /* 边框半径 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;
    
    /* 间距 */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* 字体 */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* 动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

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

/* 滚动进度指示器 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: var(--scroll-width, 0%);
    height: 3px;
    background: var(--neon-gradient);
    background-size: 200% 100%;
    z-index: 10001;
    animation: gradientShift 2s ease infinite;
    transition: width 0.1s ease;
}

/* 页面背景装饰 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 80%, rgba(22, 119, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(64, 169, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(105, 192, 255, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== TYPOGRAPHY ===== */
.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* ===== BUTTONS ===== */
.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-white);
    border: none;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

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

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--text-muted);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-secondary:hover {
    border-color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-hero-primary {
    background: var(--neon-gradient);
    background-size: 200% 200%;
    color: var(--text-white);
    border: none;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-neon);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    position: relative;
    overflow: hidden;
    animation: gradientShift 3s ease infinite;
}

.btn-hero-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s ease;
}

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

.btn-hero-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-cyber);
    animation-play-state: paused;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.btn-hero-secondary {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px) saturate(180%);
    color: var(--text-primary);
    border: 2px solid rgba(22, 119, 255, 0.3);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    position: relative;
    overflow: hidden;
}

.btn-hero-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: -1;
}

.btn-hero-secondary:hover::before {
    opacity: 1;
}

.btn-hero-secondary:hover {
    color: var(--text-white);
    border-color: transparent;
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-neon);
}

/* CTA区域的联系我们按钮使用白色字体 */
.cta-contact {
    color: var(--text-white) !important;
    border-color: rgba(255, 255, 255, 0.5) !important;
}

.cta-contact:hover {
    color: var(--text-white) !important;
    background: rgba(255, 255, 255, 0.2) !important;
    border-color: rgba(255, 255, 255, 0.8) !important;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(25px) saturate(180%);
    border-bottom: 1px solid rgba(22, 119, 255, 0.1);
    z-index: 1000;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-glass);
}

.navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--glass-gradient);
    pointer-events: none;
}

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

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.nav-brand .logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-brand .logo i {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width var(--transition-normal);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #f8faff 0%, #e8f2ff 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 10% 20%, rgba(22, 119, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(64, 169, 255, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: 20%;
    right: 10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(22, 119, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: floatingSphere 8s ease-in-out infinite;
    pointer-events: none;
}

@keyframes floatingSphere {
    0%, 100% {
        transform: translateY(0px) scale(1);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-30px) scale(1.1);
        opacity: 0.8;
    }
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

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

.floating-element {
    position: absolute;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.floating-element:nth-child(3) {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 20%;
    animation-delay: 4s;
}

.floating-element:nth-child(4) {
    width: 100px;
    height: 100px;
    top: 30%;
    right: 30%;
    animation-delay: 1s;
}

.floating-element:nth-child(5) {
    width: 40px;
    height: 40px;
    top: 10%;
    right: 10%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    position: relative;
    text-shadow: 0 0 40px rgba(22, 119, 255, 0.3);
}

.hero-title::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: radial-gradient(ellipse at center, rgba(22, 119, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: heroTitleGlow 4s ease-in-out infinite;
    z-index: -1;
}

@keyframes heroTitleGlow {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.8;
    font-weight: 500;
    position: relative;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 1px;
    opacity: 0.8;
}

.hero-subtitle::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(22, 119, 255, 0.3), transparent);
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--space-xl);
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ===== ADVANTAGES SECTION ===== */
.advantages {
    padding: var(--space-3xl) 0;
    background: var(--bg-primary);
}

.advantages-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-3xl);
}

.advantage-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.advantage-item.reverse {
    direction: rtl;
}

.advantage-item.reverse > * {
    direction: ltr;
}

.advantage-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* ===== PERFORMANCE DASHBOARD ===== */
.performance-dashboard {
    width: 100%;
    max-width: 400px;
    background: linear-gradient(145deg, #ffffff, #f8faff);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(22, 119, 255, 0.1);
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid rgba(22, 119, 255, 0.1);
}

.dashboard-header h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #52c41a;
    box-shadow: 0 0 10px rgba(82, 196, 26, 0.5);
    animation: pulse 2s infinite;
}

.performance-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.metric-card {
    background: rgba(22, 119, 255, 0.05);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.metric-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-sm);
}

.metric-icon i {
    font-size: 1.2rem;
    color: white;
}

.metric-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.metric-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.metric-chart {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(22, 119, 255, 0.1);
}

.chart-bar {
    background: var(--primary-gradient);
    height: 100%;
    width: 0;
    animation: chartFill 2s ease-out forwards;
    animation-delay: 1s;
}

@keyframes chartFill {
    from { width: 0; }
    to { width: var(--width, 100%); }
}

.performance-wave {
    height: 60px;
    overflow: hidden;
}

.wave-svg {
    width: 100%;
    height: 100%;
}

/* ===== SECURITY CENTER ===== */
.security-center {
    width: 100%;
    max-width: 400px;
    background: linear-gradient(145deg, #ffffff, #f8faff);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(22, 119, 255, 0.1);
    position: relative;
}

.security-radar {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto var(--space-lg);
}

.radar-circle {
    position: absolute;
    border: 2px solid rgba(22, 119, 255, 0.2);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.radar-circle:nth-child(1) {
    width: 200px;
    height: 200px;
}

.radar-circle:nth-child(2) {
    width: 140px;
    height: 140px;
}

.radar-circle:nth-child(3) {
    width: 80px;
    height: 80px;
}

.radar-sweep {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #1677ff, transparent);
    transform-origin: left center;
    transform: translate(0, -50%);
    animation: radarSweep 3s linear infinite;
}

@keyframes radarSweep {
    from { transform: translate(0, -50%) rotate(0deg); }
    to { transform: translate(0, -50%) rotate(360deg); }
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.security-node {
    background: rgba(22, 119, 255, 0.05);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid rgba(22, 119, 255, 0.1);
}

.security-node.active {
    background: rgba(22, 119, 255, 0.1);
    border-color: #1677ff;
    box-shadow: 0 0 20px rgba(22, 119, 255, 0.2);
}

.security-node i {
    font-size: 1.5rem;
    color: #1677ff;
    margin-bottom: var(--space-xs);
}

.security-node span {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.security-status {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #52c41a;
    box-shadow: 0 0 8px rgba(82, 196, 26, 0.5);
    animation: pulse 2s infinite;
}

.status-dot.secure {
    background: #52c41a;
}

/* ===== GLOBAL NETWORK CENTER ===== */
.global-network-center {
    width: 100%;
    max-width: 400px;
    background: linear-gradient(145deg, #ffffff, #f8faff);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(22, 119, 255, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.network-globe {
    position: relative;
    width: 200px;
    height: 200px;
}

.globe-container {
    position: relative;
    width: 100%;
    height: 100%;
    perspective: 1000px;
}

.globe-sphere {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #e0f2fe, #b3e5fc, #81d4fa);
    border: 2px solid rgba(22, 119, 255, 0.2);
    position: relative;
    overflow: hidden;
    animation: globeRotate 20s linear infinite;
    box-shadow:
        inset 0 0 30px rgba(22, 119, 255, 0.1),
        0 0 30px rgba(22, 119, 255, 0.2);
}

@keyframes globeRotate {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(360deg); }
}

.globe-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.latitude-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(22, 119, 255, 0.3);
    border-radius: 50%;
}

.longitude-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: rgba(22, 119, 255, 0.3);
    left: 50%;
    transform: translateX(-50%);
    border-radius: 50%;
}

.continent {
    position: absolute;
    background: rgba(22, 119, 255, 0.4);
    border-radius: 30% 70% 70% 30%;
    opacity: 0.6;
}

.network-node {
    position: absolute;
    width: 12px;
    height: 12px;
    transform: translate(-50%, -50%);
}

.node-ring {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid #1677ff;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.6;
    animation: nodeRingPulse 3s ease-in-out infinite;
}

.node-core {
    width: 8px;
    height: 8px;
    background: #1677ff;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px rgba(22, 119, 255, 0.8);
}

.network-node.active .node-ring {
    border-color: #52c41a;
    animation: activeNodePulse 2s ease-in-out infinite;
}

.network-node.active .node-core {
    background: #52c41a;
    box-shadow: 0 0 10px rgba(82, 196, 26, 0.8);
}

@keyframes nodeRingPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.6;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.3);
        opacity: 0.3;
    }
}

@keyframes activeNodePulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.8;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.4);
        opacity: 0.4;
    }
}

.connection-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.orbit-ring {
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    border: 1px solid rgba(22, 119, 255, 0.2);
    border-radius: 50%;
    animation: orbitRotate 15s linear infinite;
}

.orbit-ring.reverse {
    animation: orbitRotateReverse 20s linear infinite;
    top: -30px;
    left: -30px;
    right: -30px;
    bottom: -30px;
}

@keyframes orbitRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes orbitRotateReverse {
    from { transform: rotate(360deg); }
    to { transform: rotate(0deg); }
}

.orbit-satellite {
    position: absolute;
    top: -3px;
    left: 50%;
    width: 6px;
    height: 6px;
    background: #40a9ff;
    border-radius: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 8px rgba(64, 169, 255, 0.8);
}

.network-metrics {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.metric-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.metric-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(22, 119, 255, 0.05);
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    border: 1px solid rgba(22, 119, 255, 0.1);
}

.metric-icon {
    width: 32px;
    height: 32px;
    background: var(--primary-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.metric-data {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.metric-number {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1677ff;
    line-height: 1;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.advantage-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.advantage-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.advantage-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.advantage-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 500;
}

.advantage-features i {
    color: #43e97b;
    font-size: 1.1rem;
}

/* ===== CTA SECTION ===== */
.cta {
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, #1677ff 0%, #0958d9 50%, #1890ff 100%);
    color: var(--text-white);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(64, 169, 255, 0.2) 0%, transparent 50%),
        linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.05) 50%, transparent 70%);
    animation: ctaBackgroundShift 8s ease-in-out infinite;
}

.cta::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    opacity: 0.4;
    animation: ctaPatternMove 20s linear infinite;
}

@keyframes ctaBackgroundShift {
    0%, 100% {
        background-position: 0% 0%, 100% 100%, 0% 0%;
    }
    50% {
        background-position: 100% 100%, 0% 0%, 100% 100%;
    }
}

@keyframes ctaPatternMove {
    0% {
        transform: translateX(0) translateY(0);
    }
    100% {
        transform: translateX(20px) translateY(20px);
    }
}

.cta .container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 3;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
    line-height: 1.2;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
    position: relative;
}

.cta-content h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100px;
    height: 3px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 2px;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: var(--space-xl);
    opacity: 0.95;
    line-height: 1.6;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.cta-actions {
    display: flex;
    gap: var(--space-lg);
}

.cta-visual {
    position: relative;
    height: 300px;
}

.floating-devices {
    position: relative;
    width: 100%;
    height: 100%;
}

.device {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    animation: deviceFloat 6s ease-in-out infinite;
}

.device.phone {
    width: 60px;
    height: 120px;
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.device.tablet {
    width: 100px;
    height: 80px;
    top: 50%;
    right: 30%;
    animation-delay: 2s;
}

.device.laptop {
    width: 120px;
    height: 80px;
    bottom: 20%;
    left: 40%;
    animation-delay: 4s;
}

@keyframes deviceFloat {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

/* ===== FLOATING NAVIGATION ===== */
.floating-nav {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 1000;
}

.float-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--primary-gradient);
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-floating);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.float-btn::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 0.6s ease;
}

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

.float-btn:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: var(--shadow-cyber);
    background: var(--primary-gradient-hover);
}

.float-btn:active {
    transform: translateY(-1px) scale(1.05);
}

/* 按钮显示/隐藏动画 */
.float-btn.hidden {
    opacity: 0;
    transform: translateX(100px);
    pointer-events: none;
}

.float-btn.visible {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

/* 脉冲动画 */
.float-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px solid rgba(22, 119, 255, 0.6);
    border-radius: 50%;
    animation: floatPulse 2s ease-in-out infinite;
    opacity: 0;
}

.float-btn:hover::after {
    animation-play-state: paused;
    opacity: 0;
}

@keyframes floatPulse {
    0% {
        transform: scale(1);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.3;
    }
    100% {
        transform: scale(1.4);
        opacity: 0;
    }
}

/* ===== FOOTER ===== */
.footer {
    background: var(--text-primary);
    color: var(--text-white);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-brand .logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
}

.footer-brand .logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
    filter: brightness(1.1); /* 稍微提亮白色logo */
}

.footer-brand .logo i {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    transition: all var(--transition-normal);
}

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

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--text-white);
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: rgba(255, 255, 255, 0.7);
}

.contact-item i {
    width: 20px;
    color: var(--text-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-lg);
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .advantage-item {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-xl);
    }

    .advantage-item.reverse {
        direction: ltr;
    }

    .cta .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }

    .footer-brand {
        grid-column: 1 / -1;
        text-align: center;
        margin-bottom: var(--space-lg);
    }

    /* 多端支持响应式 */
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }

    .modes-showcase {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .mode-card {
        gap: var(--space-lg);
        padding: var(--space-lg);
    }

    .mode-visual {
        width: 280px;
        height: 300px;
    }

    .device-frame.desktop {
        margin: 60px 0;
    }
}

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

    /* Navigation */
    .nav-container {
        padding: 0 var(--space-sm);
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    /* 简化手机端菜单样式，移除可能导致问题的背景遮罩 */

    .nav-actions {
        display: none; /* 在手机端隐藏登录和免费试用按钮 */
    }

    .nav-toggle {
        display: flex;
    }

    /* 隐藏移动端页脚 */
    .footer {
        display: none;
    }

    /* Hero Section */
    .hero {
        min-height: 80vh;
        padding: var(--space-3xl) 0 var(--space-xl) 0; /* 增加上边距 */
    }

    .hero-title {
        font-size: 2rem;
        margin-bottom: var(--space-md);
        margin-top: var(--space-2xl); /* 增加主标题上边距 */
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: var(--space-lg);
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: var(--space-md);
    }

    .btn-hero-primary,
    .btn-hero-secondary {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
        gap: var(--space-lg);
    }

    .premium-computer-setup {
        width: 280px;
        height: 200px;
        transform: none;
    }

    /* Sections */
    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .feature-card {
        padding: var(--space-lg);
    }

    /* Advantages */
    .advantages-content {
        gap: var(--space-2xl);
    }

    .advantage-content h3 {
        font-size: 1.5rem;
    }

    .tech-icon {
        width: 80px;
        height: 80px;
    }

    .tech-icon i {
        font-size: 2rem;
    }

    /* Scenarios */
    .scenarios-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .pricing-card.featured {
        transform: none;
    }

    .pricing-card.featured:hover {
        transform: translateY(-8px);
    }

    /* CTA */
    .cta-content h2 {
        font-size: 1.8rem;
    }

    .cta-content p {
        font-size: 1rem;
    }

    .cta-actions {
        flex-direction: column;
        gap: var(--space-md);
    }

    .cta-visual {
        height: 200px;
        margin-top: var(--space-lg);
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-lg);
    }

    .footer-bottom-content {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }

    /* 浮动按钮响应式 */
    .floating-nav {
        bottom: 20px;
        right: 20px;
        gap: 8px;
    }

    .float-btn {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    :root {
        --space-xs: 0.25rem;
        --space-sm: 0.75rem;
        --space-md: 1rem;
        --space-lg: 1.5rem;
        --space-xl: 2rem;
        --space-2xl: 2.5rem;
        --space-3xl: 3rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .hero-stats {
        flex-direction: row; /* 改为横排 */
        flex-wrap: wrap; /* 允许换行 */
        justify-content: center; /* 居中对齐 */
        gap: var(--space-md);
    }

    .stat-item {
        display: flex;
        align-items: center;
        gap: var(--space-sm);
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .premium-computer-setup {
        width: 220px;
        height: 160px;
    }

    .pricing-toggle {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .toggle-switch {
        order: -1;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .navbar,
    .nav-toggle,
    .floating-elements,
    .particles-container,
    .cta,
    .footer {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: var(--space-lg) 0;
    }

    .section {
        page-break-inside: avoid;
    }

    .feature-card,
    .scenario-card,
    .pricing-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ===== HIGH CONTRAST MODE ===== */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #333333;
        --bg-primary: #ffffff;
        --bg-secondary: #f5f5f5;
    }

    .gradient-text {
        background: none;
        -webkit-background-clip: unset;
        -webkit-text-fill-color: unset;
        background-clip: unset;
        color: var(--text-primary);
    }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .floating-element,
    .cloud-particle,
    .app-icon {
        animation: none !important;
    }
}