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

:root {
    --primary-green: #8BC34A;
    --primary-lime: #CDDC39;
    --dark-bg: #1E1E1E;
    --dark-card: #2A2A2A;
    --text-light: #FFFFFF;
    --text-muted: #B0B0B0;
    --gradient: linear-gradient(135deg, #8BC34A 0%, #CDDC39 100%);
}

body {
    font-family: 'Inter', 'SF Pro Display', 'Source Han Sans', '思源黑体', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-light);
    line-height: 1.6;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    border-bottom: 1px solid rgba(139, 195, 74, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-light);
}

.logo-icon {
    font-size: 28px;
    margin-right: 8px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}

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

/* 按钮样式 */
.btn-primary {
    background: var(--gradient);
    color: var(--dark-bg);
    padding: 10px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: transform 0.3s, box-shadow 0.3s;
    display: inline-block;
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 20px rgba(139, 195, 74, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-green);
    padding: 10px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    border: 2px solid var(--primary-green);
    transition: all 0.3s;
    display: inline-block;
}

.btn-secondary:hover {
    background: var(--primary-green);
    color: var(--dark-bg);
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

.btn-outline {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 500;
    border: 1px solid var(--primary-green);
    padding: 10px 24px;
    border-radius: 25px;
    display: inline-block;
    transition: all 0.3s;
}

.btn-outline:hover {
    background: var(--primary-green);
    color: var(--dark-bg);
}

/* 首屏主视觉 */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(139, 195, 74, 0.1) 0%, transparent 70%);
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-muted);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 20px;
}

.hero-note {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 40px;
}

.trust-badges {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.trust-badges span {
    color: var(--text-muted);
    font-size: 14px;
    padding: 8px 16px;
    border: 1px solid rgba(139, 195, 74, 0.3);
    border-radius: 20px;
}

/* 通用区块样式 */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 15px;
}

.section-desc {
    text-align: center;
    color: var(--text-muted);
    font-size: 18px;
    margin-bottom: 50px;
}

/* 功能卡片 */
.features {
    background: var(--dark-card);
}

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

.feature-card {
    background: var(--dark-bg);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid rgba(139, 195, 74, 0.1);
    transition: transform 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-green);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-muted);
    margin-bottom: 20px;
    line-height: 1.8;
}

.card-link {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 500;
}

/* 全球节点 */
.nodes-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: var(--dark-card);
    border-radius: 12px;
}

.stat-number {
    display: block;
    font-size: 42px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-muted);
    font-size: 16px;
}

.nodes-preview {
    text-align: center;
}

/* 平台兼容性 */
.platforms {
    background: var(--dark-card);
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.platform-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px;
    background: var(--dark-bg);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-light);
    transition: transform 0.3s, background 0.3s;
}

.platform-item:hover {
    transform: translateY(-3px);
    background: rgba(139, 195, 74, 0.1);
}

.platform-icon {
    font-size: 40px;
    margin-bottom: 10px;
}

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

/* 安全与隐私 */
.security-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.security-item {
    padding: 30px;
    background: var(--dark-card);
    border-radius: 12px;
}

.security-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.security-item p {
    color: var(--text-muted);
    line-height: 1.8;
}

.security {
    text-align: center;
}

/* 用户评价 */
.testimonials {
    background: var(--dark-card);
}

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

.testimonial-card {
    background: var(--dark-bg);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid rgba(139, 195, 74, 0.1);
}

.testimonial-text {
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 20px;
    line-height: 1.8;
}

.author-name {
    display: block;
    font-weight: 600;
    margin-bottom: 5px;
}

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

/* 价格方案 */
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.pricing-card {
    background: var(--dark-card);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    position: relative;
    border: 1px solid rgba(139, 195, 74, 0.1);
}

.pricing-card.featured {
    border-color: var(--primary-green);
    transform: scale(1.05);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: var(--dark-bg);
    padding: 5px 20px;
    border-radius: 15px;
    font-size: 13px;
    font-weight: 600;
}

.pricing-name {
    font-size: 22px;
    margin-bottom: 20px;
}

.pricing-price {
    margin-bottom: 10px;
}

.price-amount {
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.pricing-save {
    color: var(--primary-green);
    font-size: 14px;
    margin-bottom: 20px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 10px 0;
    color: var(--text-muted);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.pricing-preview {
    text-align: center;
}

.pricing-note {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

/* 常见问题 */
.faq-list {
    max-width: 800px;
    margin: 0 auto 40px;
}

.faq-item {
    background: var(--dark-card);
    padding: 25px 30px;
    border-radius: 12px;
    margin-bottom: 15px;
}

.faq-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary-green);
}

.faq-item p {
    color: var(--text-muted);
    line-height: 1.8;
}

.faq {
    text-align: center;
}

/* 页脚 */
.footer {
    background: #151515;
    padding: 60px 0 30px;
}

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

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--primary-green);
}

.footer-col a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    padding: 5px 0;
    font-size: 14px;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 10px;
}

.legal-notice {
    font-size: 12px;
    max-width: 600px;
    margin: 10px auto;
}

.footer-links {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 15px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-cards,
    .testimonial-grid,
    .pricing-cards {
        grid-template-columns: 1fr;
    }
    
    .nodes-stats,
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .security-features {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .nav-menu {
        gap: 15px;
    }
    
    .nav-menu a:not(.btn-primary) {
        display: none;
    }
    
    .pricing-card.featured {
        transform: none;
    }
}

/* 子页面标题 */
.page-header {
    padding: 140px 0 60px;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(139, 195, 74, 0.08) 0%, transparent 70%);
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* 功能详情页 */
.feature-detail {
    padding: 80px 0;
}

.feature-detail.alt {
    background: var(--dark-card);
}

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

.feature-text h2 {
    font-size: 32px;
    margin-bottom: 10px;
}

.feature-text h3 {
    font-size: 20px;
    color: var(--primary-green);
    margin-bottom: 20px;
}

.feature-text p {
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.feature-list li {
    color: var(--text-muted);
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    line-height: 1.6;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-green);
    font-weight: bold;
}

.speed-demo {
    padding: 30px;
}

.speed-bar {
    margin-bottom: 20px;
}

.speed-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 14px;
}

.speed-fill {
    height: 12px;
    background: #555;
    border-radius: 6px;
}

.speed-fill.green {
    background: var(--gradient);
}

.encryption-demo {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 30px;
}

.encrypt-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background: var(--dark-bg);
    border-radius: 12px;
    min-width: 100px;
}

.step-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.step-text {
    font-size: 12px;
    color: var(--text-muted);
}

.encrypt-arrow {
    font-size: 24px;
    color: var(--primary-green);
}

.platform-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    padding: 20px;
}

.device-item {
    padding: 15px;
    background: var(--dark-bg);
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    color: var(--text-muted);
}

.routing-demo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 40px;
}

.route-node {
    padding: 20px 30px;
    background: var(--dark-bg);
    border-radius: 12px;
    border: 1px solid var(--primary-green);
    color: var(--primary-green);
    font-weight: 600;
}

.route-line {
    width: 40px;
    height: 2px;
    background: var(--gradient);
}

.more-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 40px;
}

.more-feature-item {
    padding: 30px;
    background: var(--dark-card);
    border-radius: 12px;
    border: 1px solid rgba(139, 195, 74, 0.1);
}

.more-feature-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.more-feature-item p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 14px;
}

/* 节点页面 */
.nodes-overview {
    padding: 40px 0;
}

.nodes-list {
    padding: 40px 0;
}

.nodes-list .section-title {
    text-align: left;
    font-size: 24px;
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(139, 195, 74, 0.2);
}

.nodes-list .section-title:first-child {
    margin-top: 0;
}

.node-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.node-item {
    display: flex;
    flex-direction: column;
    padding: 20px;
    background: var(--dark-card);
    border-radius: 10px;
    border: 1px solid rgba(139, 195, 74, 0.1);
    transition: border-color 0.3s;
}

.node-item:hover {
    border-color: var(--primary-green);
}

.node-flag {
    font-size: 28px;
    margin-bottom: 8px;
}

.node-name {
    font-weight: 600;
    font-size: 16px;
    margin-bottom: 5px;
}

.node-city {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 5px;
}

.node-latency {
    color: var(--primary-green);
    font-size: 12px;
}

.node-features {
    padding: 80px 0;
    background: var(--dark-card);
}

.node-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-top: 40px;
}

.node-feature-item {
    padding: 30px;
    background: var(--dark-bg);
    border-radius: 12px;
}

.node-feature-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.node-feature-item p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* 价格页面 */
.pricing-full {
    padding: 40px 0 60px;
    text-align: center;
}

.pricing-compare {
    padding: 60px 0;
    background: var(--dark-card);
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 40px;
}

.compare-table th,
.compare-table td {
    padding: 15px 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.compare-table th {
    background: var(--dark-bg);
    color: var(--primary-green);
    font-weight: 600;
}

.compare-table td {
    color: var(--text-muted);
}

.compare-table tr:hover td {
    background: rgba(139, 195, 74, 0.05);
}

.payment-methods {
    padding: 60px 0;
    text-align: center;
}

.payment-grid {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 40px 0 20px;
}

.payment-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 30px;
    background: var(--dark-card);
    border-radius: 12px;
    min-width: 120px;
}

.payment-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

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

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

/* 帮助页面 */
.help-categories {
    padding: 40px 0;
}

.help-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.help-category {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 30px 20px;
    background: var(--dark-card);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-light);
    transition: transform 0.3s, border-color 0.3s;
    border: 1px solid rgba(139, 195, 74, 0.1);
}

.help-category:hover {
    transform: translateY(-3px);
    border-color: var(--primary-green);
}

.help-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.help-category h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.help-category p {
    color: var(--text-muted);
    font-size: 13px;
}

.help-content {
    padding: 60px 0;
}

.help-content.alt {
    background: var(--dark-card);
}

.steps {
    max-width: 800px;
    margin: 40px auto 0;
}

.step {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding: 25px;
    background: var(--dark-card);
    border-radius: 12px;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--gradient);
    color: var(--dark-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

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

.step-content a {
    color: var(--primary-green);
    text-decoration: none;
}

.install-guide {
    margin-bottom: 30px;
    padding: 25px;
    background: var(--dark-bg);
    border-radius: 12px;
}

.install-guide h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.install-steps {
    padding-left: 20px;
}

.install-steps li {
    color: var(--text-muted);
    padding: 6px 0;
    line-height: 1.6;
}

.install-steps code {
    background: rgba(139, 195, 74, 0.1);
    color: var(--primary-green);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}

.faq-category {
    margin-bottom: 40px;
}

.faq-category h3 {
    font-size: 22px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(139, 195, 74, 0.2);
}

.faq-item h4 {
    font-size: 16px;
    color: var(--primary-green);
    margin-bottom: 8px;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 40px;
}

.contact-item {
    padding: 30px;
    background: var(--dark-card);
    border-radius: 12px;
    text-align: center;
}

.contact-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.contact-item p {
    color: var(--text-muted);
    margin-bottom: 15px;
    font-size: 14px;
}

/* CTA区块 */
.cta-section {
    padding: 80px 0;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(139, 195, 74, 0.1) 0%, transparent 70%);
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.cta-section p {
    color: var(--text-muted);
    font-size: 18px;
    margin-bottom: 30px;
}

/* 站点地图页面 */
.sitemap-content {
    padding: 40px 0 80px;
}

.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.sitemap-section h2 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--primary-green);
}

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

.sitemap-section li {
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.sitemap-section a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* 响应式补充 */
@media (max-width: 768px) {
    .feature-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .node-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .more-features {
        grid-template-columns: 1fr;
    }
    
    .help-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
    }
    
    .sitemap-grid {
        grid-template-columns: 1fr;
    }
    
    .node-feature-grid {
        grid-template-columns: 1fr;
    }
    
    .compare-table {
        font-size: 13px;
    }
    
    .compare-table th,
    .compare-table td {
        padding: 10px;
    }
    
    .page-header h1 {
        font-size: 32px;
    }
}