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

:root {
    --primary-color: #004080;
    --accent-color: #39FF14;
    --dark-bg: #0a0a0a;
    --card-bg: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-color: #333333;
    --gradient-primary: linear-gradient(135deg, #004080 0%, #0066cc 100%);
    --gradient-accent: linear-gradient(135deg, #39FF14 0%, #2ecc40 100%);
    --shadow-primary: 0 10px 30px rgba(57, 255, 20, 0.1);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Mobile menu toggle button */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #39FF14;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

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

.logo-image {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

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

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

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

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

.cta-button {
    background: var(--gradient-accent);
    color: var(--dark-bg) !important;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    box-shadow: var(--shadow-primary);
    transition: all 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(57, 255, 20, 0.2);
}

.cta-button::after {
    display: none;
}

/* 主页Banner */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(ellipse at center, rgba(0, 64, 128, 0.1) 0%, transparent 70%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    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="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23333" stroke-width="0.5" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 20px;
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

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

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--dark-bg);
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 50px rgba(57, 255, 20, 0.3);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

/* 交易仪表板 */
.hero-visual {
    animation: fadeInRight 1s ease-out 0.3s both;
}

.trading-dashboard {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.trading-dashboard::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
}

.dashboard-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-color);
    animation: pulse 2s infinite;
}

.chart-container {
    margin: 20px 0;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.metrics {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.metric {
    text-align: center;
}

.metric-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.metric-value.positive {
    color: var(--accent-color);
}

/* 核心价值区域 */
.values {
    padding: 100px 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 64, 128, 0.05) 100%);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
    color: var(--text-primary);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.value-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(57, 255, 20, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.value-card:hover::before {
    opacity: 1;
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-card);
    border-color: var(--accent-color);
}

.value-icon {
    margin-bottom: 20px;
}

.value-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.value-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 底部 */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.footer-logo span {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-color);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-disclaimer {
    flex: 1;
    min-width: 300px;
}

.footer-disclaimer p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

/* 功能页面样式 */
.features-hero {
    padding: 120px 0 80px;
    background: radial-gradient(ellipse at center, rgba(0, 64, 128, 0.1) 0%, transparent 70%);
    text-align: center;
}

.features-hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-hero-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.features-detail {
    padding: 80px 0;
}

.feature-section {
    margin-bottom: 120px;
}

.feature-content-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.feature-section.reverse .feature-content-wrapper {
    grid-template-columns: 1fr 1fr;
}

.feature-section.reverse .feature-text {
    order: 2;
}

.feature-section.reverse .feature-visual {
    order: 1;
}

.feature-badge {
    display: inline-block;
    background: var(--gradient-accent);
    color: var(--dark-bg);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.feature-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-subtitle {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 40px;
}

.feature-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.feature-point {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.point-icon {
    font-size: 1.5rem;
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(57, 255, 20, 0.1);
    border-radius: 10px;
}

.point-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.point-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 功能可视化组件 */
.monitor-dashboard, .backtest-dashboard, .risk-dashboard, .execution-panel {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
}

.monitor-header, .backtest-header, .risk-header, .execution-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.monitor-title, .backtest-header h4, .risk-header h4, .execution-header h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.monitor-status, .execution-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--accent-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-color);
    animation: pulse 2s infinite;
}

.monitor-alerts {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.alert-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border-radius: 10px;
    border-left: 4px solid;
}

.alert-item.high {
    background: rgba(255, 59, 48, 0.1);
    border-left-color: #ff3b30;
}

.alert-item.medium {
    background: rgba(255, 149, 0, 0.1);
    border-left-color: #ff9500;
}

.alert-item.low {
    background: rgba(57, 255, 20, 0.1);
    border-left-color: var(--accent-color);
}

.alert-icon {
    font-size: 1.2rem;
}

.alert-title {
    font-weight: 600;
    color: var(--text-primary);
}

.alert-time {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* 回测仪表板 */
.backtest-period {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.backtest-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

.metric-card {
    background: rgba(57, 255, 20, 0.05);
    padding: 15px;
    border-radius: 10px;
    text-align: center;
}

.metric-card .metric-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.metric-card .metric-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.metric-card .metric-value.positive {
    color: var(--accent-color);
}

/* 风险仪表板 */
.risk-level {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.risk-level.low {
    background: rgba(57, 255, 20, 0.2);
    color: var(--accent-color);
}

.risk-gauges {
    display: flex;
    justify-content: space-around;
    margin-bottom: 25px;
}

.gauge-container {
    text-align: center;
}

.gauge {
    position: relative;
    margin-bottom: 10px;
}

.gauge-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.gauge-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-color);
}

.risk-alerts {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.risk-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.risk-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.risk-item.safe .risk-indicator {
    background: var(--accent-color);
}

/* 执行面板 */
.execution-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 25px;
}

.exec-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.exec-btn.buy {
    background: rgba(57, 255, 20, 0.1);
    border: 1px solid var(--accent-color);
}

.exec-btn.sell {
    background: rgba(255, 59, 48, 0.1);
    border: 1px solid #ff3b30;
}

.exec-btn.neutral {
    background: rgba(128, 128, 128, 0.1);
    border: 1px solid #808080;
}

.btn-icon {
    font-size: 1.5rem;
}

.btn-text {
    text-align: left;
}

.btn-title {
    font-weight: 600;
    color: var(--text-primary);
}

.btn-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.execution-log {
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
}

.log-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: 0.9rem;
}

.log-time {
    color: var(--text-muted);
}

.log-action.success {
    color: var(--accent-color);
}

/* 技术优势 */
.tech-advantages {
    padding: 80px 0;
    background: linear-gradient(180deg, rgba(0, 64, 128, 0.05) 0%, transparent 100%);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.tech-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.tech-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.tech-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.tech-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}







/* Animation classes */
.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.value-card,
.feature-card,
.tech-card {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

/* Hover effects */
.value-card:hover,
.feature-card:hover,
.tech-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(57, 255, 20, 0.2);
}

/* Button hover effects */
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(57, 255, 20, 0.3);
}

.btn:active {
    transform: translateY(0);
}

/* Loading animation for images */
.feature-icon,
.tech-icon-img,
.logo-image {
    transition: all 0.3s ease;
}

.feature-icon:hover,
.tech-icon-img:hover {
    transform: scale(1.1) rotate(5deg);
    filter: drop-shadow(0 0 25px rgba(57, 255, 20, 0.5));
}
/* 产品概述部分 */
.overview {
    padding: 80px 0;
    background: linear-gradient(135deg, #001122 0%, #002244 100%);
    color: white;
}

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

.overview-description {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #e0e0e0;
    margin-top: 30px;
}

/* 了解更多部分 */
.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, #001122 0%, #002244 50%, #001133 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(57, 255, 20, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 64, 128, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

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

.contact .section-title {
    color: #ffffff;
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    font-weight: 700;
}

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

.contact-description h3 {
    color: #39FF14;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.contact-description p {
    color: #e0e0e0;
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.contact-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.contact-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(57, 255, 20, 0.2);
    border-radius: 8px;
    color: #ffffff;
    font-weight: 500;
    transition: all 0.3s ease;
}

.contact-feature:hover {
    background: rgba(57, 255, 20, 0.1);
    border-color: rgba(57, 255, 20, 0.4);
    transform: translateY(-2px);
}

.contact-feature .feature-icon {
    font-size: 1.2rem;
}

.contact-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #39FF14, #32CD32);
    color: #000000;
    border: none;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(57, 255, 20, 0.3);
}

.contact-cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(57, 255, 20, 0.4);
    background: linear-gradient(135deg, #32CD32, #39FF14);
}

.contact-cta-btn svg {
    transition: transform 0.3s ease;
}

.contact-cta-btn:hover svg {
    transform: translate(2px, -2px);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: #2c3e50;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #39FF14;
    box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.submit-btn {
    background: linear-gradient(135deg, #39FF14 0%, #32d912 100%);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(57, 255, 20, 0.3);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-loading {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid white;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 表单消息样式 */
.form-message {
    border-radius: 6px;
    padding: 12px 16px;
    margin: 16px 0;
    font-size: 0.95rem;
    font-weight: 500;
    animation: slideIn 0.3s ease-out;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.contact-guarantee {
    margin-top: 3rem;
    text-align: center;
}

.contact-guarantee p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: linear-gradient(135deg, #001122, #002244);
    border: 1px solid rgba(57, 255, 20, 0.3);
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease-out;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header h3 {
    color: #39FF14;
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: #ffffff;
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #39FF14;
}

.modal-body {
    padding: 2rem;
}

.modal-body p {
    color: #e0e0e0;
    margin-bottom: 1.5rem;
    text-align: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .contact-features {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .overview-description {
        font-size: 1.1rem;
    }
    
    .nav-container {
        padding: 0 20px;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(0, 20, 40, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 20px;
        border-top: 1px solid rgba(57, 255, 20, 0.2);
        gap: 20px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-link {
        padding: 15px 0;
        border-bottom: 1px solid rgba(57, 255, 20, 0.1);
        font-size: 0.9rem;
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .mobile-menu-toggle {
        display: block;
        background: none;
        border: none;
        color: #39FF14;
        font-size: 1.5rem;
        cursor: pointer;
        padding: 5px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
        line-height: 1.2;
    }
    
    .hero-description {
        font-size: 1.1rem;
        margin: 20px 0 30px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .values-grid,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .feature-content-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .feature-section.reverse .feature-text,
    .feature-section.reverse .feature-visual {
        order: unset;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-visual {
        order: -1;
        margin-bottom: 30px;
    }
    
    .feature-icon {
        width: 100px;
        height: 100px;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .tech-icon-img {
        width: 50px;
        height: 50px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
    }
    
    .features-hero-content h1 {
        font-size: 2rem;
    }
    
    .feature-text h2 {
        font-size: 2rem;
    }
}