/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #00d4aa;
    --secondary-color: #0a2540;
    --accent-color: #ff6b6b;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --border-color: #e0e0e0;
    --gradient-1: linear-gradient(135deg, #00d4aa 0%, #00a896 100%);
    --gradient-2: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary-color);
}

.logo img {
    width: 40px;
    height: 40px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

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

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

.nav-actions {
    display: flex;
    gap: 12px;
}

/* 按钮样式 */
button {
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-weight: 600;
    transition: all 0.3s;
    border-radius: 8px;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    padding: 10px 24px;
}

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

.btn-secondary {
    background: transparent;
    color: var(--text-dark);
    padding: 10px 24px;
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    padding: 10px 24px;
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn-outline-white {
    background: transparent;
    color: white;
    padding: 10px 24px;
    border: 2px solid white;
}

.btn-outline-white:hover {
    background: white;
    color: var(--primary-color);
}

.btn-large {
    padding: 14px 32px;
    font-size: 16px;
}

/* 英雄区域 */
.hero {
    margin-top: 80px;
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0,212,170,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

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

.hero-text h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--secondary-color);
}

.hero-text p {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

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

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

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

.hero-image img {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.15));
}

/* 区块标题 */
.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 48px;
    color: var(--secondary-color);
}

/* 产品功能 */
.features {
    padding: 80px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    transition: all 0.3s;
    position: relative;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-card.featured {
    background: var(--gradient-1);
    color: white;
    border: none;
}

.feature-card.featured h3,
.feature-card.featured p,
.feature-card.featured li {
    color: white;
}

.badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(255,255,255,0.3);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 24px;
}

.feature-icon img {
    width: 100%;
    height: 100%;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--text-light);
    margin-bottom: 24px;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 8px 0;
    color: var(--text-light);
}

.feature-list li::before {
    content: '✓ ';
    color: var(--primary-color);
    font-weight: 700;
    margin-right: 8px;
}

.feature-card.featured .feature-list li::before {
    color: white;
}

/* 性能对比 */
.performance {
    padding: 80px 0;
    background: var(--bg-light);
}

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

.performance-chart img {
    width: 100%;
    height: auto;
}

.perf-item {
    margin-bottom: 32px;
}

.perf-label {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--secondary-color);
}

.perf-bar {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.perf-before,
.perf-after {
    display: flex;
    align-items: center;
    gap: 16px;
}

.perf-before span,
.perf-after span {
    min-width: 120px;
    font-size: 14px;
    color: var(--text-light);
}

.bar {
    height: 32px;
    border-radius: 8px;
    transition: width 1s ease;
}

.perf-before .bar {
    background: linear-gradient(90deg, #ff6b6b 0%, #ee5a6f 100%);
}

.perf-after .bar {
    background: var(--gradient-1);
}

/* 技术优势 */
.advantages {
    padding: 80px 0;
    background: white;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.advantage-item {
    text-align: center;
    padding: 32px;
    border-radius: 12px;
    transition: all 0.3s;
}

.advantage-item:hover {
    background: var(--bg-light);
    transform: translateY(-4px);
}

.advantage-item img {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
}

.advantage-item h4 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--secondary-color);
}

.advantage-item p {
    font-size: 14px;
    color: var(--text-light);
}

/* 价格方案 */
.pricing {
    padding: 80px 0;
    background: var(--bg-light);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.pricing-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    border-width: 3px;
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 24px;
    color: var(--secondary-color);
}

.price {
    margin-bottom: 32px;
}

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

.amount {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
}

.period {
    font-size: 16px;
    color: var(--text-light);
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
    text-align: left;
}

.pricing-features li {
    padding: 12px 0;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border-color);
}

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

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

/* CTA区域 */
.cta {
    padding: 80px 0;
    background: var(--gradient-1);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 40px;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* 页脚 */
.footer {
    background: var(--secondary-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 16px;
}

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

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

.footer-section a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
}

.footer-info p {
    margin-bottom: 12px;
    color: rgba(255,255,255,0.7);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
}

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

.footer-links span {
    color: rgba(255,255,255,0.3);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero-text h1 {
        font-size: 32px;
    }
    
    .features-grid,
    .advantages-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .performance-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 999;
    box-shadow: var(--shadow-md);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: all 0.3s;
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

/* 页脚额外信息样式 */
.footer-extra {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-extra p {
    margin: 8px 0;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    line-height: 1.6;
}

.footer-notice {
    margin-top: 12px;
    font-size: 12px;
    color: rgba(255,255,255,0.5);
    font-style: italic;
}

.footer-links a {
    transition: color 0.3s;
}

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

/* 导航按钮链接样式 */
.nav-actions a.btn-primary {
    display: inline-block;
    text-decoration: none;
}

.nav-actions a.btn-primary:hover {
    transform: translateY(-2px);
}

/* Hero区域按钮链接样式 */
.hero-actions a {
    display: inline-block;
    text-decoration: none;
}

.hero-actions a.btn-primary:hover,
.hero-actions a.btn-outline:hover {
    transform: translateY(-2px);
}

/* 页脚底部美化样式 */
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
}

.footer-info {
    max-width: 900px;
    margin: 0 auto;
}

.copyright {
    font-size: 14px;
    margin-bottom: 16px;
    color: rgba(255,255,255,0.8);
    font-weight: 500;
}

.footer-beian {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-beian a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s;
}

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

.footer-beian .divider {
    color: rgba(255,255,255,0.3);
}

.footer-beian span:not(.divider) {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
}

.footer-licenses {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
    padding: 16px 0;
}

.license-item {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    line-height: 1.6;
}

.license-label {
    color: rgba(255,255,255,0.5);
    margin-right: 6px;
}

.footer-disclaimer {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-disclaimer p {
    font-size: 12px;
    color: rgba(255,255,255,0.45);
    font-style: italic;
    line-height: 1.6;
}

/* 移动端页脚优化 */
@media (max-width: 768px) {
    .footer-beian {
        flex-direction: column;
        gap: 8px;
    }
    
    .footer-beian .divider {
        display: none;
    }
    
    .license-item {
        flex-direction: column;
        text-align: center;
        gap: 4px;
    }
    
    .license-label {
        margin-right: 0;
    }
}

/* 页脚底部美化样式 */
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
}

.footer-info {
    max-width: 900px;
    margin: 0 auto;
}

.copyright {
    font-size: 14px;
    margin-bottom: 16px;
    color: rgba(255,255,255,0.8);
    font-weight: 500;
}

.footer-beian {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-beian a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s;
}

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

.footer-beian .divider {
    color: rgba(255,255,255,0.3);
}

.footer-beian span:not(.divider) {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
}

.footer-licenses {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
    padding: 16px 0;
}

.license-item {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    line-height: 1.6;
}

.license-label {
    color: rgba(255,255,255,0.5);
    margin-right: 6px;
}

.footer-disclaimer {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-disclaimer p {
    font-size: 12px;
    color: rgba(255,255,255,0.45);
    font-style: italic;
    line-height: 1.6;
}

/* 移动端页脚优�?*/
@media (max-width: 768px) {
    .footer-beian {
        flex-direction: column;
        gap: 8px;
    }
    
    .footer-beian .divider {
        display: none;
    }
    
    .license-item {
        flex-direction: column;
        text-align: center;
        gap: 4px;
    }
    
    .license-label {
        margin-right: 0;
    }
}

/* CTA区域按钮链接样式 */
.cta-actions a {
    display: inline-block;
    text-decoration: none;
}