/* TurboNet 首页专属样式 - 橙红色主题，居中布局 */
.hero{
  position:relative;padding:160px 0 100px;overflow:hidden;text-align:center;
  background:
    radial-gradient(700px 400px at 50% 0%,rgba(249,115,22,0.18),transparent 60%),
    radial-gradient(500px 300px at 20% 80%,rgba(239,68,68,0.12),transparent 70%),
    radial-gradient(500px 300px at 80% 80%,rgba(249,115,22,0.1),transparent 70%);
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:100px;font-size:12.5px;
  background:var(--bg-card-hover);border:1px solid var(--border-hover);
  color:var(--brand-1);margin-bottom:22px;
}
.hero-eyebrow .dot{
  width:7px;height:7px;border-radius:50%;background:var(--brand-1);
  box-shadow:0 0 0 3px rgba(249,115,22,0.2);animation:pulse 2s ease-in-out infinite;
}
.hero h1{
  font-size:clamp(36px,5.8vw,64px);font-weight:800;color:#fff;
  line-height:1.15;letter-spacing:-1px;margin-bottom:18px;
}
.hero h1 .grad{
  background:linear-gradient(120deg,#fb923c,#f87171,#f97316);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-desc{font-size:16.5px;color:var(--text-secondary);max-width:580px;margin:0 auto 32px}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:56px}

/* Hero 视觉 - 涡轮脉冲 */
.hero-visual{
  position:relative;width:320px;height:320px;margin:0 auto;
}
.turbo-core{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:140px;height:140px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,#fb923c,#ef4444 55%,#450a0a);
  display:grid;place-items:center;box-shadow:0 24px 70px rgba(249,115,22,0.5);
  animation:float 4s ease-in-out infinite;
}
.turbo-core svg{width:56px;height:56px;color:#fff;animation:spin 8s linear infinite}
.turbo-ring{
  position:absolute;inset:0;border-radius:50%;
  border:2px solid transparent;
  border-top-color:rgba(249,115,22,0.4);
  border-right-color:rgba(239,68,68,0.3);
  animation:spin 3s linear infinite;
}
.turbo-ring.r2{inset:20px;animation:spin 4s linear infinite reverse;border-top-color:rgba(239,68,68,0.35);border-right-color:rgba(249,115,22,0.25)}
.turbo-ring.r3{inset:40px;animation:spin 5s linear infinite;border-top-color:rgba(249,115,22,0.25)}
.turbo-dot{
  position:absolute;width:10px;height:10px;border-radius:50%;
  background:var(--brand-1);box-shadow:0 0 14px var(--brand-1);
}
.turbo-dot.d1{top:8%;left:50%;transform:translateX(-50%)}
.turbo-dot.d2{bottom:12%;right:10%}
.turbo-dot.d3{bottom:10%;left:12%}

/* 数据条 */
.stats-bar{
  background:var(--bg-secondary);border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  padding:40px 0;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item .num{
  font-size:34px;font-weight:800;color:#fff;
  background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-item .lbl{font-size:13px;color:var(--text-tertiary);margin-top:4px}

/* 核心特性 - 2列大卡片 */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.feature-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px 30px;transition:all .35s ease;position:relative;overflow:hidden;
}
.feature-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--gradient);transform:scaleX(0);transform-origin:left;transition:transform .4s ease;
}
.feature-card:hover{border-color:var(--border-hover);transform:translateY(-5px);box-shadow:var(--shadow)}
.feature-card:hover::before{transform:scaleX(1)}
.feature-icon{
  width:58px;height:58px;border-radius:14px;margin-bottom:20px;
  background:linear-gradient(135deg,rgba(249,115,22,0.16),rgba(239,68,68,0.1));
  border:1px solid var(--border-hover);display:grid;place-items:center;
}
.feature-icon svg{width:28px;height:28px;color:var(--brand-1)}
.feature-card h3{font-size:20px;font-weight:600;color:#fff;margin-bottom:10px}
.feature-card p{font-size:14.5px;color:var(--text-tertiary);line-height:1.75}

/* 节点分布 */
.nodes-section{background:var(--bg-secondary);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.node-map{
  position:relative;max-width:800px;margin:0 auto;height:360px;
  background:
    radial-gradient(circle at 30% 40%,rgba(249,115,22,0.06) 0%,transparent 40%),
    radial-gradient(circle at 70% 60%,rgba(239,68,68,0.05) 0%,transparent 40%);
  border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
}
.node-map::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(249,115,22,0.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(249,115,22,0.04) 1px,transparent 1px);
  background-size:50px 50px;
}
.node-point{
  position:absolute;width:12px;height:12px;border-radius:50%;
  background:var(--brand-1);box-shadow:0 0 16px var(--brand-1);
  animation:pulse 2.5s ease-in-out infinite;
}
.node-point::after{
  content:"";position:absolute;inset:-6px;border-radius:50%;
  border:1px solid rgba(249,115,22,0.3);animation:pulse 2.5s ease-in-out infinite;
}
.node-label{
  position:absolute;font-size:11px;color:var(--text-tertiary);white-space:nowrap;
  transform:translate(16px,-50%);
}
.node-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px;text-align:center}
.node-stat .num{font-size:28px;font-weight:700;color:#fff;background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent}
.node-stat .lbl{font-size:12.5px;color:var(--text-tertiary);margin-top:2px}

/* 平台 - 横向滚动风格 */
.platform-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.platform-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:26px 14px;text-align:center;
  transition:all .35s ease;cursor:pointer;
}
.platform-card:hover{border-color:var(--border-hover);background:var(--bg-card-hover);transform:translateY(-3px);box-shadow:var(--shadow)}
.platform-icon{width:50px;height:50px;margin:0 auto 12px;border-radius:12px;display:grid;place-items:center;color:var(--brand-1);background:linear-gradient(135deg,rgba(249,115,22,0.14),rgba(239,68,68,0.08));border:1px solid var(--border-hover)}
.platform-icon svg{width:26px;height:26px}
.platform-card .name{font-size:14px;font-weight:600;color:#fff;margin-bottom:3px}
.platform-card .meta{font-size:11.5px;color:var(--text-tertiary)}

/* 安全 */
.security-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.security-card{
  background:linear-gradient(180deg,rgba(255,255,255,0.035),rgba(255,255,255,0.01));
  border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:32px 26px;transition:all .35s ease;
}
.security-card:hover{border-color:var(--border-hover);transform:translateY(-3px);box-shadow:var(--shadow)}
.security-badge{display:inline-flex;align-items:center;gap:5px;padding:4px 11px;border-radius:100px;font-size:11px;background:rgba(249,115,22,0.1);color:var(--brand-1);border:1px solid var(--border-hover);margin-bottom:16px}
.security-card h3{font-size:20px;font-weight:600;color:#fff;margin-bottom:9px}
.security-card p{color:var(--text-tertiary);font-size:13.5px;margin-bottom:18px}
.security-list{display:flex;flex-direction:column;gap:9px}
.security-list li{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--text-secondary)}
.security-list svg{width:16px;height:16px;color:var(--brand-1);flex:none;margin-top:2px}

/* 评价 - 大卡片 */
.testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.testimonial-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:30px;transition:all .35s ease;position:relative;
}
.testimonial-card:hover{border-color:var(--border-hover);transform:translateY(-3px);box-shadow:var(--shadow)}
.quote-mark{position:absolute;top:14px;right:20px;font-size:48px;color:rgba(249,115,22,0.15);font-family:Georgia,serif;line-height:1}
.stars{display:flex;gap:2px;margin-bottom:12px;color:#fbbf24}
.stars svg{width:15px;height:15px;fill:currentColor}
.testimonial-text{color:var(--text-secondary);font-size:13.5px;line-height:1.8;margin-bottom:22px}
.testimonial-user{display:flex;align-items:center;gap:12px;border-top:1px solid var(--border);padding-top:16px}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--gradient);display:grid;place-items:center;color:#fff;font-weight:600;font-size:15px}
.user-info .name{font-size:13.5px;color:#fff;font-weight:600}
.user-info .role{font-size:11.5px;color:var(--text-tertiary);margin-top:1px}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .3s}
.faq-item.open{border-color:var(--border-hover);box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;text-align:left;color:#fff;font-size:15px;font-weight:600;gap:16px}
.faq-q:hover{background:var(--bg-card-hover)}
.faq-icon{width:30px;height:30px;border-radius:9px;background:var(--bg-card);border:1px solid var(--border);display:grid;place-items:center;flex:none;transition:all .3s;color:var(--brand-1)}
.faq-item.open .faq-icon{background:var(--gradient);color:#fff;border-color:transparent;transform:rotate(45deg)}
.faq-icon svg{width:15px;height:15px}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-item.open .faq-a{max-height:560px}
.faq-a-inner{padding:0 24px 22px;color:var(--text-secondary);font-size:14px;line-height:1.9}
.faq-steps{display:flex;flex-direction:column;gap:9px}
.faq-step{display:flex;gap:12px;align-items:flex-start;padding:10px 12px;border-radius:9px;background:rgba(249,115,22,0.04);border-left:2px solid var(--brand-1)}
.step-tag{flex:none;display:inline-block;padding:2px 9px;border-radius:100px;font-size:11px;background:var(--gradient);color:#fff;font-weight:600;white-space:nowrap}
.step-text{flex:1;color:var(--text-secondary);font-size:13.5px}

/* 底部CTA */
.cta-section{
  background:linear-gradient(135deg,rgba(249,115,22,0.1),rgba(239,68,68,0.06));
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  padding:72px 0;text-align:center;
}
.cta-section h2{font-size:clamp(24px,3.5vw,36px);font-weight:700;color:#fff;margin-bottom:12px}
.cta-section p{color:var(--text-tertiary);font-size:15px;margin-bottom:28px;max-width:520px;margin-left:auto;margin-right:auto}

@media (max-width:1024px){
  .feature-grid,.security-grid,.testimonial-grid{grid-template-columns:1fr}
  .platform-grid{grid-template-columns:repeat(3,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .node-stats{grid-template-columns:1fr}
}
@media (max-width:768px){
  .hero{padding:120px 0 72px}
  .hero-visual{width:260px;height:260px}
  .turbo-core{width:110px;height:110px}
  .feature-grid,.security-grid,.testimonial-grid{grid-template-columns:1fr}
  .platform-grid{grid-template-columns:repeat(2,1fr)}
  .node-map{height:280px}
}
@media (max-width:480px){
  .platform-grid{grid-template-columns:repeat(2,1fr)}
  .hero-actions .btn{flex:1;justify-content:center}
  .stats-grid{grid-template-columns:1fr 1fr}
}