/* ===================================================
   微舆 v4 · To B 严肃商务风
   主色: 深蓝 #1A1A2E · 橙 #FF6B35
   副色: #0F0F1A / #222244 / #F5F5F7 / #0B0B17
   =================================================== */

:root{
  --bg:#0B0B17;
  --bg-2:#0F0F1A;
  --surface:#1A1A2E;
  --surface-2:#222244;
  --line:#2A2A4A;
  --text:#F5F5F7;
  --text-muted:#9A9AB0;
  --primary:#FF6B35;
  --primary-hover:#FF8255;
  --accent:#FFAA80;
  --maxw:1200px;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}

.container{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
}

/* ========== 通用按钮 ========== */
.btn{
  display:inline-block;
  padding:10px 20px;
  border-radius:8px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  border:1px solid transparent;
  transition:all .2s ease;
  cursor:pointer;
  text-align:center;
}
.btn-lg{padding:14px 28px;font-size:15px}
.btn-primary{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}
.btn-outline{
  background:transparent;
  color:var(--text);
  border-color:var(--line);
}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost{background:transparent;color:var(--text);border-color:transparent}
.btn-ghost:hover{color:var(--primary)}
.btn-full{display:block;width:100%}

/* ========== 顶部导航 ========== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,11,23,.85);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;
}
.logo-card{
  display:flex;flex-direction:column;
  padding:8px 16px;
  border:1px solid var(--line);
  border-radius:10px;
  background:linear-gradient(135deg,var(--surface) 0%,var(--surface-2) 100%);
}
.logo-mark{
  font-size:20px;font-weight:700;color:#fff;
  letter-spacing:.05em;
}
.logo-sub{
  font-size:11px;color:var(--primary);
  letter-spacing:.15em;margin-top:2px;
}
.nav{display:flex;gap:32px}
.nav a{
  font-size:14px;color:var(--text-muted);
  transition:color .2s ease;
}
.nav a:hover{color:var(--primary)}
.header-cta{display:flex;gap:12px}

/* ========== Hero ========== */
.hero{
  padding:96px 0 80px;
  background:
    radial-gradient(ellipse at top right,rgba(255,107,53,.08) 0%,transparent 60%),
    radial-gradient(ellipse at bottom left,rgba(34,34,68,.5) 0%,transparent 60%),
    var(--bg);
}
.hero-inner{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:60px;
  align-items:center;
}
.eyebrow{
  display:inline-block;
  font-size:12px;letter-spacing:.2em;
  color:var(--primary);
  margin-bottom:20px;
  text-transform:uppercase;
}
.hero-title{
  font-size:54px;line-height:1.15;font-weight:700;
  color:#fff;
  margin-bottom:24px;
  letter-spacing:-.01em;
}
.hero-sub{
  font-size:17px;color:var(--text-muted);
  max-width:560px;margin-bottom:36px;
}
.hero-actions{display:flex;gap:14px;margin-bottom:32px}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:24px;
  font-size:14px;color:var(--text-muted);
}
.hero-trust li{
  position:relative;padding-left:14px;
}
.hero-trust li::before{
  content:"";position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
}

/* Hero 卡片 */
.hero-card{
  position:relative;
  padding:32px;
  background:linear-gradient(135deg,var(--surface) 0%,var(--surface-2) 100%);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
}
.card-glow{
  position:absolute;top:-50%;right:-30%;
  width:300px;height:300px;
  background:radial-gradient(circle,rgba(255,107,53,.25) 0%,transparent 70%);
  pointer-events:none;
}
.card-body{position:relative}
.card-row{
  display:flex;align-items:center;gap:12px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.card-row:last-child{border-bottom:none}
.card-row .badge{margin-left:auto}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.dot-green{background:#4ADE80;box-shadow:0 0 8px rgba(74,222,128,.6)}
.metric{margin-left:auto;color:#4ADE80;font-weight:600;font-size:12px;letter-spacing:.1em}
.badge{
  padding:4px 10px;border-radius:6px;
  font-size:12px;font-weight:600;
}
.badge-pos{background:rgba(74,222,128,.15);color:#4ADE80}
.badge-warn{background:rgba(255,107,53,.15);color:var(--primary)}
.badge-info{background:rgba(96,165,250,.15);color:#60A5FA}
.card-foot{
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:12px;color:var(--text-muted);
  text-align:center;letter-spacing:.15em;
}

/* ========== 数据网格 ========== */
.metrics{
  padding:48px 0;
  background:var(--bg-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.metrics-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.metric-card{
  padding:32px 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px;
  transition:all .2s ease;
}
.metric-card:hover{
  border-color:var(--primary);
  transform:translateY(-2px);
}
.metric-num{
  font-size:42px;font-weight:700;color:#fff;
  line-height:1;margin-bottom:8px;
}
.metric-num span{font-size:18px;color:var(--primary);margin-left:4px}
.metric-label{
  font-size:14px;color:var(--primary);
  font-weight:600;margin-bottom:12px;
  letter-spacing:.05em;
}
.metric-desc{
  font-size:13px;color:var(--text-muted);line-height:1.6;
}

/* ========== 通用 Section ========== */
.section{padding:96px 0;background:var(--bg)}
.section-alt{background:var(--bg-2)}
.section-head{
  text-align:center;
  max-width:720px;margin:0 auto 64px;
}
.section-head h2{
  font-size:38px;font-weight:700;color:#fff;
  line-height:1.25;margin-bottom:16px;
  letter-spacing:-.01em;
}
.section-sub{
  font-size:16px;color:var(--text-muted);line-height:1.7;
}

/* ========== 能力网格 ========== */
.capability-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.cap-card{
  padding:36px 28px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px;
  transition:all .25s ease;
}
.cap-card:hover{
  border-color:var(--primary);
  background:linear-gradient(135deg,var(--surface) 0%,rgba(255,107,53,.05) 100%);
  transform:translateY(-3px);
}
.cap-icon{
  font-size:32px;font-weight:700;color:var(--primary);
  margin-bottom:20px;
  font-family:"SF Mono","Consolas",monospace;
}
.cap-card h3{
  font-size:18px;color:#fff;
  margin-bottom:12px;font-weight:600;
}
.cap-card p{
  font-size:14px;color:var(--text-muted);line-height:1.7;
}

/* ========== 平台覆盖 ========== */
.coverage-grid{
  display:flex;flex-wrap:wrap;gap:12px;
  justify-content:center;
  max-width:960px;margin:0 auto;
}
.chip{
  display:inline-block;
  padding:10px 18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:100px;
  font-size:14px;color:var(--text);
  transition:all .2s ease;
}
.chip:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:rgba(255,107,53,.08);
}

/* ========== 价格方案 ========== */
.pricing-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  max-width:1080px;margin:0 auto;
}
.price-card{
  position:relative;
  padding:40px 32px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  transition:all .2s ease;
}
.price-card:hover{transform:translateY(-3px)}
.price-card-featured{
  background:linear-gradient(135deg,var(--surface) 0%,var(--surface-2) 100%);
  border-color:var(--primary);
  box-shadow:0 20px 40px rgba(255,107,53,.15);
}
.ribbon{
  position:absolute;top:-12px;left:50%;
  transform:translateX(-50%);
  padding:6px 16px;
  background:var(--primary);
  color:#fff;
  font-size:12px;font-weight:600;
  border-radius:100px;
  letter-spacing:.1em;
}
.price-tier{
  font-size:14px;color:var(--text-muted);
  margin-bottom:16px;
  letter-spacing:.1em;text-transform:uppercase;
}
.price-card-featured .price-tier{color:var(--primary)}
.price-num{
  font-size:42px;font-weight:700;color:#fff;
  line-height:1;margin-bottom:8px;
}
.price-num span{font-size:16px;color:var(--text-muted);margin-left:6px;font-weight:500}
.price-card-featured .price-num span{color:var(--primary)}
.price-unit{
  font-size:13px;color:var(--text-muted);
  margin-bottom:28px;padding-bottom:28px;
  border-bottom:1px solid var(--line);
}
.price-list{margin-bottom:32px}
.price-list li{
  padding:10px 0;
  font-size:14px;color:var(--text);
  position:relative;padding-left:20px;
}
.price-list li::before{
  content:"✓";position:absolute;left:0;color:var(--primary);
  font-weight:700;
}

/* ========== 应用场景 ========== */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.scene-card{
  padding:32px 28px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px;
  border-left:3px solid var(--primary);
}
.scene-card h3{
  font-size:18px;color:#fff;
  margin-bottom:12px;font-weight:600;
}
.scene-card p{
  font-size:14px;color:var(--text-muted);line-height:1.7;
}

/* ========== 关于 ========== */
.about-inner{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:60px;
  align-items:start;
}
.about-text h2{
  font-size:32px;color:#fff;
  margin-bottom:24px;font-weight:700;
}
.about-text p{
  font-size:16px;color:var(--text-muted);line-height:1.8;
  margin-bottom:16px;
}
.about-card{
  padding:32px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px;
}
.about-card h3{
  font-size:14px;color:var(--primary);
  letter-spacing:.15em;text-transform:uppercase;
  margin-bottom:20px;
}
.about-card li{
  padding:12px 0;
  font-size:15px;color:var(--text);
  border-bottom:1px solid var(--line);
}
.about-card li:last-child{border-bottom:none}

/* ========== CTA ========== */
.cta{
  padding:80px 0;
  background:linear-gradient(135deg,var(--surface) 0%,var(--surface-2) 100%);
  border-top:1px solid var(--line);
}
.cta-inner{
  text-align:center;max-width:680px;margin:0 auto;
}
.cta h2{
  font-size:36px;color:#fff;font-weight:700;
  margin-bottom:16px;
}
.cta p{
  font-size:16px;color:var(--text-muted);
  margin-bottom:32px;
}
.cta-actions{display:flex;gap:14px;justify-content:center}

/* ========== Footer ========== */
.site-footer{
  padding:48px 0;
  background:#08080F;
  border-top:1px solid var(--line);
}
.footer-inner{
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:24px;
}
.footer-brand .logo-mark{
  font-size:18px;font-weight:700;color:#fff;
  margin-bottom:8px;display:inline-block;
}
.footer-brand p{
  font-size:13px;color:var(--text-muted);
}
.footer-meta{
  text-align:right;
}
.footer-meta p{
  font-size:12px;color:var(--text-muted);
  margin-bottom:4px;
}

/* ========== 响应式 ========== */
@media (max-width:960px){
  .hero-inner,
  .about-inner{
    grid-template-columns:1fr;
  }
  .hero-title{font-size:38px}
  .metrics-grid,
  .capability-grid,
  .scene-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .pricing-grid{grid-template-columns:1fr}
  .nav{display:none}
  .header-cta .btn-ghost{display:none}
}
@media (max-width:600px){
  .container{padding:0 16px}
  .hero{padding:64px 0 48px}
  .section{padding:64px 0}
  .hero-title{font-size:30px}
  .section-head h2{font-size:28px}
  .metrics-grid,
  .capability-grid,
  .scene-grid{
    grid-template-columns:1fr;
  }
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .footer-inner{flex-direction:column;text-align:center}
  .footer-meta{text-align:center}
}