/* ===== 基础样式 ===== */
:root {
    /* 蓝紫色调 */
    --primary-blue: #00BFFF;
    --primary-purple: #9D4EDD;
    --primary-pink: #FF1493;
    --accent-cyan: #00FFFF;
    --accent-violet: #8A2BE2;
    
    /* 深色背景 */
    --bg-primary: #0a0e27;
    --bg-secondary: #131742;
    --bg-tertiary: #1a1f52;
    
    /* 渐变色 */
    --gradient-main: linear-gradient(135deg, #00BFFF 0%, #9D4EDD 50%, #FF1493 100%);
    --gradient-blue: linear-gradient(135deg, #00BFFF 0%, #0099CC 100%);
    --gradient-purple: linear-gradient(135deg, #9D4EDD 0%, #7B2CBF 100%);
    
    /* 文字颜色 */
    --text-primary: #ffffff;
    --text-secondary: #a0a8d4;
    --text-muted: #7a8bbd;
    
    /* 阴影 */
    --shadow-glow: 0 0 20px rgba(0, 191, 255, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow-purple: 0 0 30px rgba(157, 78, 221, 0.4);
    
    /* 边框 */
    --border-glow: 1px solid rgba(0, 191, 255, 0.3);
    --border-purple: 1px solid rgba(157, 78, 221, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

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

/* 动态背景 */
.cyber-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(0, 191, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(157, 78, 221, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(255, 20, 147, 0.05) 0%, transparent 50%);
    z-index: -1;
    pointer-events: none;
}

/* 扫描线效果 */
.cyber-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 191, 255, 0.01) 2px,
        rgba(0, 191, 255, 0.01) 4px
    );
    animation: scanlines 8s linear infinite;
}

@keyframes scanlines {
    0% { transform: translateY(0); }
    100% { transform: translateY(4px); }
}

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

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: var(--border-glow);
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand .logo {
    font-size: 28px;
    font-weight: bold;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-main);
    transition: width 0.3s ease;
}

.nav-menu a:hover {
    color: var(--primary-blue);
}

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

.nav-cta {
    background: var(--gradient-main);
    color: white;
    padding: 10px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 25px rgba(0, 191, 255, 0.5);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ===== Banner模块 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(0, 191, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(157, 78, 221, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 191, 255, 0.1);
    border: var(--border-glow);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    color: var(--primary-blue);
    margin-bottom: 25px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 10px rgba(0, 191, 255, 0.3); }
    50% { box-shadow: 0 0 20px rgba(0, 191, 255, 0.6); }
}

.hero h1 {
    font-size: 56px;
    line-height: 1.2;
    margin-bottom: 20px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 35px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.btn-primary, .btn-secondary, .btn-outline {
    padding: 14px 35px;
    border: none;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 191, 255, 0.6);
}

.btn-glow {
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 191, 255, 0.4); }
    50% { box-shadow: 0 0 35px rgba(0, 191, 255, 0.8); }
}

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

.btn-secondary:hover {
    background: rgba(0, 191, 255, 0.1);
    transform: translateY(-3px);
}

.btn-large {
    padding: 18px 45px;
    font-size: 18px;
}

.hero-stats {
    display: flex;
    gap: 50px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 32px;
    font-weight: bold;
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* 地球动画 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.globe-animation {
    position: relative;
    width: 400px;
    height: 400px;
}

.orbit {
    position: absolute;
    border: 2px solid rgba(0, 191, 255, 0.2);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.orbit-1 {
    width: 300px;
    height: 300px;
    animation: rotate 20s linear infinite;
}

.orbit-2 {
    width: 350px;
    height: 350px;
    animation: rotate 30s linear infinite reverse;
}

.orbit-3 {
    width: 400px;
    height: 400px;
    animation: rotate 40s linear infinite;
}

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

.center-node {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: var(--gradient-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    box-shadow: 0 0 40px rgba(0, 191, 255, 0.6);
    animation: pulse 2s ease-in-out infinite;
}

.center-node i {
    color: white;
}

/* ===== 数据展示模块 ===== */
.stats {
    padding: 60px 0;
    background: var(--bg-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--bg-tertiary);
    padding: 30px;
    border-radius: 15px;
    border: var(--border-purple);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow-purple);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.cyber-icon-1 {
    background: var(--gradient-blue);
    box-shadow: 0 0 20px rgba(0, 191, 255, 0.4);
}

.cyber-icon-2 {
    background: var(--gradient-purple);
    box-shadow: 0 0 20px rgba(157, 78, 221, 0.4);
}

.cyber-icon-3 {
    background: linear-gradient(135deg, #FF1493 0%, #C71585 100%);
    box-shadow: 0 0 20px rgba(255, 20, 147, 0.4);
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: var(--text-primary);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 5px;
}

.stat-line {
    width: 50px;
    height: 3px;
    background: var(--gradient-main);
    border-radius: 2px;
    margin-top: 10px;
}

/* ===== 功能特性模块 ===== */
.features {
    padding: 100px 0;
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 30%, rgba(157, 78, 221, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 70%, rgba(0, 191, 255, 0.05) 0%, transparent 50%);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(157, 78, 221, 0.1);
    border: var(--border-purple);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    color: var(--primary-purple);
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 42px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--bg-secondary);
    padding: 35px;
    border-radius: 20px;
    border: var(--border-purple);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-main);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-card), var(--shadow-glow-purple);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon-wrap {
    margin-bottom: 25px;
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: white;
    position: relative;
}

.feature-icon-1 { background: var(--gradient-blue); }
.feature-icon-2 { background: var(--gradient-purple); }
.feature-icon-3 { background: linear-gradient(135deg, #00FFFF 0%, #008080 100%); }
.feature-icon-4 { background: linear-gradient(135deg, #FF1493 0%, #C71585 100%); }
.feature-icon-5 { background: linear-gradient(135deg, #8A2BE2 0%, #4B0082 100%); }
.feature-icon-6 { background: linear-gradient(135deg, #00BFFF 0%, #1E90FF 100%); }

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 20px;
    line-height: 1.7;
}

.feature-tech {
    display: flex;
    gap: 10px;
}

.feature-tech span {
    background: rgba(0, 191, 255, 0.1);
    color: var(--primary-blue);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    border: 1px solid rgba(0, 191, 255, 0.2);
}

/* ===== 应用场景模块 ===== */
.scenarios {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.tabs {
    margin-top: 50px;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    background: transparent;
    border: 2px solid rgba(157, 78, 221, 0.3);
    color: var(--text-secondary);
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover, .tab-btn.active {
    background: var(--gradient-purple);
    color: white;
    border-color: transparent;
    box-shadow: 0 0 20px rgba(157, 78, 221, 0.4);
}

.tab-content {
    background: var(--bg-tertiary);
    border-radius: 25px;
    padding: 50px;
    border: var(--border-glow);
    position: relative;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.scenario-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.scenario-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    font-size: 45px;
    color: white;
    box-shadow: 0 0 40px rgba(0, 191, 255, 0.5);
}

.scenario-content h3 {
    font-size: 32px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.scenario-content > p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 35px;
}

.scenario-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.feature-check {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px;
    background: rgba(0, 191, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(0, 191, 255, 0.1);
}

.feature-check i {
    font-size: 28px;
    color: var(--primary-blue);
}

.feature-check span {
    font-size: 14px;
    color: var(--text-primary);
}

/* ===== 用户评价模块 ===== */
.testimonials {
    padding: 100px 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 20px;
    border: var(--border-glow);
    transition: all 0.4s ease;
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-card), var(--shadow-glow);
}

.testimonial-stars {
    margin-bottom: 20px;
}

.testimonial-stars i {
    color: #FFD700;
    font-size: 16px;
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.testimonial-avatar {
    width: 60px;
    height: 60px;
    background: var(--gradient-purple);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 25px;
    color: white;
}

.testimonial-info h4 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.testimonial-info span {
    font-size: 14px;
    color: var(--text-muted);
}

.testimonial-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.testimonial-meta {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: var(--text-muted);
}

.testimonial-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ===== 价格方案模块 ===== */
.pricing {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.pricing-card {
    background: var(--bg-tertiary);
    padding: 45px;
    border-radius: 25px;
    border: var(--border-purple);
    text-align: center;
    position: relative;
    transition: all 0.4s ease;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-card), var(--shadow-glow-purple);
}

.pricing-card.popular {
    border: 2px solid var(--primary-purple);
    box-shadow: var(--shadow-glow-purple);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-purple);
    color: white;
    padding: 8px 25px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
}

.pricing-header h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.price {
    margin: 25px 0;
}

.currency {
    font-size: 24px;
    color: var(--text-muted);
}

.price-value {
    font-size: 56px;
    font-weight: bold;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.period {
    font-size: 18px;
    color: var(--text-muted);
}

.price-desc {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 5px;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin: 30px 0;
}

.pricing-features li {
    padding: 12px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(157, 78, 221, 0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features li i {
    color: var(--primary-blue);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-card button {
    width: 100%;
}

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

.btn-outline:hover {
    background: var(--gradient-purple);
    color: white;
    transform: translateY(-3px);
}

/* ===== FAQ模块 ===== */
.faq {
    padding: 100px 0;
}

.faq-list {
    max-width: 900px;
    margin: 50px auto 0;
}

.faq-item {
    background: var(--bg-secondary);
    margin-bottom: 15px;
    border-radius: 15px;
    border: var(--border-purple);
    overflow: hidden;
}

.faq-question {
    padding: 25px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: rgba(157, 78, 221, 0.1);
}

.faq-question h4 {
    font-size: 18px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.faq-question h4 i {
    color: var(--primary-purple);
    font-size: 20px;
}

.faq-toggle {
    font-size: 20px;
    color: var(--primary-blue);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 30px 25px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== CTA模块 ===== */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(0, 191, 255, 0.1) 0%, rgba(157, 78, 221, 0.1) 100%);
    border-top: var(--border-glow);
    border-bottom: var(--border-glow);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta h2 {
    font-size: 42px;
    margin-bottom: 20px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-content > p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 35px;
}

.cta-note {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 25px;
    font-size: 14px;
    color: var(--text-muted);
}

.cta-note i {
    color: var(--primary-blue);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-secondary);
    padding: 80px 0 30px;
    border-top: var(--border-purple);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-brand .logo {
    font-size: 32px;
    font-weight: bold;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    margin-bottom: 15px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: var(--bg-tertiary);
    border: var(--border-glow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
    font-size: 18px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--gradient-main);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.footer-section h4 {
    color: var(--text-primary);
    font-size: 18px;
    margin-bottom: 25px;
}

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

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

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(157, 78, 221, 0.1);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 14px;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-buttons, .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .features-grid, .testimonials-grid, .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        border-bottom: var(--border-glow);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-cta {
        display: none;
    }
    
    .hero h1 {
        font-size: 40px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid, .testimonials-grid, .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .scenario-features {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 32px;
    }
}