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

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, sans-serif;
    background: #ffffff;
    color: #0b1120;
    line-height: 1.5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    flex-wrap: wrap;
    gap: 16px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.logo {
    font-size: 28px;
    font-weight: 800;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 28px;
    align-items: center;
    flex-wrap: wrap;
}

.nav-links a {
    text-decoration: none;
    color: #1e293b;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #3b82f6;
}

.btn-ghost {
    background: transparent;
    border: 1px solid #3b82f6;
    padding: 8px 20px;
    border-radius: 40px;
    color: #3b82f6;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-ghost:hover {
    background: #3b82f6;
    color: white;
}

/* Hero区域 - 全屏背景 */
.hero-wrapper {
    width: 100vw;
    max-width: 100%;
    position: relative;
    overflow: hidden;
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('bg.png') center/cover no-repeat;
    z-index: 0;
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero h1 {
    font-size: clamp(48px, 7vw, 72px);
    font-weight: 800;
    color: #ffffff;
    line-height: 1.1;
    margin-bottom: 24px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.hero p {
    font-size: clamp(18px, 3vw, 24px);
    color: rgba(255,255,255,0.95);
    margin-bottom: 40px;
    max-width: 700px;
    line-height: 1.6;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-download-big {
    background: #3b82f6;
    color: white;
    padding: 16px 48px;
    border-radius: 60px;
    font-weight: 700;
    font-size: 18px;
    text-decoration: none;
    box-shadow: 0 10px 30px -5px rgba(59,130,246,0.5);
    transition: all 0.3s;
    display: inline-block;
}

.btn-download-big:hover {
    background: #2563eb;
    transform: translateY(-3px);
    box-shadow: 0 15px 40px -5px rgba(59,130,246,0.6);
}

.btn-download-big {
    background: #3b82f6;
    color: white;
    padding: 14px 40px;
    border-radius: 60px;
    font-weight: 700;
    font-size: 18px;
    text-decoration: none;
    box-shadow: 0 10px 25px -5px rgba(59,130,246,0.5);
    transition: all 0.2s;
    display: inline-block;
}

.btn-download-big:hover {
    background: #2563eb;
    transform: scale(1.02);
}

/* 统计栏 */
.stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    margin: 60px 0 40px;
    padding: 24px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(8px);
    border-radius: 80px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

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

.stat-number {
    font-size: 32px;
    font-weight: 800;
    color: #3b82f6;
}

/* 功能卡片网格 */
.features-section {
    margin: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
    color: #0f172a;
}

.features-waterfall {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.feature-item {
    background: white;
    backdrop-filter: blur(4px);
    border-radius: 24px;
    padding: 32px;
    transition: all 0.3s;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 16px rgba(0,0,0,0.04);
    text-align: center;
}

.feature-item:hover {
    transform: translateY(-4px);
    border-color: #3b82f6;
    box-shadow: 0 8px 24px rgba(59,130,246,0.15);
}

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

.feature-item h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: #0f172a;
}

.feature-item p {
    color: #64748b;
    line-height: 1.6;
}

/* 下载浮动栏 */
.download-banner {
    background: linear-gradient(110deg, #1e293b, #0f172a);
    border-radius: 64px;
    padding: 48px 32px;
    margin: 80px 0;
    text-align: center;
    color: white;
}

.download-banner h2 {
    font-size: 32px;
    margin-bottom: 12px;
}

.download-banner p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
}

.platform-icons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.platform-icon {
    background: rgba(255,255,255,0.15);
    padding: 10px 24px;
    border-radius: 60px;
    text-decoration: none;
    color: white;
    font-weight: 500;
    transition: 0.2s;
}

.platform-icon:hover {
    background: white;
    color: #0f172a;
}

/* 常见问题 */
.faq-compact {
    max-width: 800px;
    margin: 0 auto 80px;
}

.faq-q {
    background: white;
    padding: 18px 24px;
    margin-bottom: 12px;
    border-radius: 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(0,0,0,0.02);
    transition: all 0.2s;
}

.faq-q:hover {
    background: #f8fafc;
}

.faq-a {
    display: none;
    padding: 0 24px 20px;
    color: #475569;
    border-left: 2px solid #3b82f6;
    margin-left: 24px;
}

.faq-item.active .faq-a {
    display: block;
}

/* 页脚 */
.footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 48px 0 24px;
    margin-top: 40px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 32px;
    margin-bottom: 32px;
}

.footer-brand {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 8px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}

.footer-copyright {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #1e293b;
    color: #64748b;
}

/* 产品页样式 */
.hero-product {
    text-align: center;
    padding: 100px 0 40px;
}

.hero-product h1 {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 16px;
}

.hero-product p {
    font-size: 20px;
    color: #64748b;
    margin-bottom: 24px;
}

.product-section-title {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 32px;
    color: #0f172a;
}

/* 交替功能块 */
.alternate-feature {
    display: flex;
    align-items: center;
    gap: 48px;
    margin: 80px 0;
    flex-wrap: wrap;
}

.alternate-feature.reverse {
    flex-direction: row-reverse;
}

.feat-text {
    flex: 1;
    min-width: 300px;
}

.feat-text h2 {
    font-size: 32px;
    margin-bottom: 16px;
    color: #0f172a;
}

.feat-text p {
    color: #64748b;
    line-height: 1.6;
}

.feat-img {
    flex: 1;
    border-radius: 48px;
    min-height: 300px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feat-img:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(0,0,0,0.15);
}

.feat-img-1 {
    background-image: url('bg1.jpeg');
}

.feat-img-2 {
    background-image: url('bg2.jpeg');
}

.feat-img-3 {
    background-image: url('bg3.jpeg');
}

/* 节点仪表盘 */
.node-dashboard {
    background: #f1f5f9;
    border-radius: 48px;
    padding: 32px;
    margin: 60px 0;
}

.node-dashboard h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #0f172a;
}

.node-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 20px 0;
}

.node {
    background: white;
    border-radius: 40px;
    padding: 8px 18px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    margin-right: 6px;
}

.node-dashboard p {
    margin-top: 16px;
    color: #64748b;
}

/* 技术表格 */
.tech-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 32px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    margin: 32px 0;
}

.tech-table td, .tech-table th {
    padding: 16px 20px;
    border-bottom: 1px solid #e2e8f0;
    text-align: left;
}

.tech-table th {
    background: #f8fafc;
    font-weight: 600;
    color: #0f172a;
}

.tech-table tr:last-child td {
    border-bottom: none;
}

/* 用户评价区域 */
.testimonial-section {
    background: #f8fafc;
    border-radius: 40px;
    padding: 32px;
    margin: 56px 0;
}

.testimonial-section h3 {
    font-size: 26px;
    margin-bottom: 20px;
    color: #0f172a;
}

.testimonial-row {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.testimonial-mini {
    flex: 1;
    min-width: 250px;
}

.testimonial-mini p {
    color: #475569;
    margin-bottom: 12px;
    line-height: 1.6;
}

.testimonial-mini b {
    color: #0f172a;
}

/* 功能列表 */
.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto 48px;
}

.feature-block {
    background: #f8fafc;
    padding: 24px;
    border-radius: 16px;
}

.feature-block h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: #0f172a;
}

.feature-block p {
    color: #64748b;
    line-height: 1.6;
}

/* 节点网格 */
.node-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 24px;
}

.node-tag {
    background: rgba(59,130,246,0.1);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    color: #3b82f6;
}

/* 平台卡片 */
.platforms-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 700px;
    margin: 0 auto 48px;
}

.platform-card {
    background: white;
    padding: 24px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid #e2e8f0;
    transition: all 0.2s;
}

.platform-card:hover {
    border-color: #3b82f6;
    transform: translateY(-2px);
}

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

.platform-card h3 {
    font-size: 18px;
    margin-bottom: 4px;
}

.platform-card p {
    font-size: 14px;
    color: #64748b;
}

/* 下载区域 */
.download-section {
    text-align: center;
    margin-bottom: 48px;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.download-item {
    background: #f8fafc;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

.download-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.download-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.download-version {
    font-size: 12px;
    color: #94a3b8;
}

/* 用户评价 */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.testimonial {
    background: white;
    padding: 24px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.testimonial p {
    color: #475569;
    margin-bottom: 16px;
    line-height: 1.6;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.author-name {
    font-weight: 600;
    color: #0f172a;
}

.author-role {
    font-size: 12px;
    color: #94a3b8;
}

/* 技术规格 */
.specs-table {
    background: white;
    padding: 32px;
    border-radius: 16px;
    margin-bottom: 48px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.spec-item {
    padding: 20px;
    background: #f8fafc;
    border-radius: 12px;
}

.spec-label {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 4px;
}

.spec-value {
    color: #0f172a;
    font-weight: 600;
}

/* CTA */
.cta-bar {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    padding: 48px 32px;
    border-radius: 32px;
    text-align: center;
    color: white;
    margin-bottom: 48px;
}

.cta-bar h2 {
    font-size: 28px;
    margin-bottom: 8px;
}

.cta-bar p {
    color: rgba(255,255,255,0.9);
    margin-bottom: 24px;
}

.btn-white {
    background: white;
    color: #3b82f6;
    padding: 12px 32px;
    border-radius: 40px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
}

.btn-white:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

/* 响应式 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 38px;
    }
    
    .stats {
        flex-direction: column;
        align-items: center;
        gap: 20px;
        border-radius: 40px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .features-waterfall {
        grid-template-columns: 1fr;
    }
    
    .feature-list {
        grid-template-columns: 1fr;
    }
    
    .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .navbar {
        padding: 16px 24px;
    }
    
    .nav-links {
        gap: 16px;
    }
}