/* ===================== 基础变量 ===================== */
:root{
  --primary:#3b82f6;
  --primary-2:#6366f1;
  --primary-3:#8b5cf6;
  --cyan:#06b6d4;

  --bg-light:#f6f8fc;
  --bg-light-2:#ffffff;
  --bg-dark:#0a0f1f;
  --bg-dark-2:#0e1530;
  --bg-card-dark:#121a35;

  --text:#0f172a;
  --text-2:#475569;
  --text-3:#94a3b8;
  --text-on-dark:#e6edf7;
  --text-on-dark-2:#a3b1cc;
  --text-on-dark-3:#7286a8;

  --border:rgba(15,23,42,0.08);
  --border-dark:rgba(255,255,255,0.08);

  --radius:14px;
  --radius-lg:20px;
  --shadow-sm:0 2px 8px rgba(15,23,42,0.04);
  --shadow:0 12px 32px rgba(15,23,42,0.06);
  --shadow-lg:0 24px 48px rgba(15,23,42,0.10);

  --gradient-blue:linear-gradient(135deg,#3b82f6 0%,#6366f1 50%,#8b5cf6 100%);
  --gradient-text:linear-gradient(90deg,#7dd3fc,#60a5fa,#a78bfa);
  --gradient-text-light:linear-gradient(90deg,#3b82f6,#6366f1,#8b5cf6);
}

/* ===================== Reset ===================== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'HYQiHei','Microsoft YaHei','PingFang SC','Noto Sans SC',sans-serif;
  color:var(--text);
  line-height:1.7;
  background:#fff;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}

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

/* ===================== 通用 ===================== */
.text-white{color:#fff !important}
.text-gradient{
  background:var(--gradient-text);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.section-light .text-gradient{background:var(--gradient-text-light);-webkit-background-clip:text;background-clip:text;color:transparent}

.section{padding:96px 0;position:relative}
.section-light{background:var(--bg-light)}
.section-light + .section-light{background:#fff}
.section-dark{background:linear-gradient(180deg,#0a0f1f 0%,#0e1530 100%);color:var(--text-on-dark)}
.section-dark .section-sub,
.section-dark .section-summary{color:var(--text-on-dark-2)}

.section-head{
  text-align:center;
  margin-bottom:56px;
}
.section-title{
  font-size:36px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:-0.02em;
}
.section-sub{
  margin-top:16px;
  font-size:16px;
  color:var(--text-2);
  max-width:760px;
  margin-left:auto;
  margin-right:auto;
}
.section-summary{
  margin-top:24px;
  font-size:15px;
  color:var(--text-2);
}

/* ===================== 占位图 ===================== */
.section-figure{
  margin-top:48px;
  width:min(100%, 880px);
  margin-left:auto;
  margin-right:auto;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:#eef2f8;
  border:1px solid var(--border);
  box-shadow:0 18px 42px rgba(15, 23, 42, 0.08);
}
.section-dark .section-figure{
  background:rgba(255,255,255,0.03);
  border-color:var(--border-dark);
}
.section-figure img{width:100%;height:auto;display:block}
.section-figure figcaption{
  text-align:center;
  padding:14px 22px;
  color:var(--text-2);
  font-size:13px;
  background:#fff;
}
.section-dark .section-figure figcaption{
  background:rgba(255,255,255,0.04);
  color:var(--text-on-dark-2);
}
.section-figure-lg{
  margin-top:64px;
  width:min(100%, 980px);
}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:12px 26px;
  border-radius:10px;
  font-weight:600;
  font-size:15px;
  transition:all .2s ease;
  border:1px solid transparent;
}
.btn-lg{padding:16px 36px;font-size:16px}
.btn-primary{
  background:var(--gradient-blue);
  color:#fff;
  box-shadow:0 8px 20px rgba(59,130,246,.25);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(59,130,246,.35)}
.btn-ghost{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.25);
}
.section-light .btn-ghost{
  color:var(--text);
  border-color:var(--border);
  background:#fff;
}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.section-light .btn-ghost:hover{background:var(--bg-light);border-color:var(--primary);color:var(--primary)}

/* ===================== 顶部导航 ===================== */
.nav{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  background:rgba(10,15,31,0.6);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:all .3s ease;
}
.nav.is-scrolled{
  background:rgba(10,15,31,0.85);
  border-bottom-color:rgba(255,255,255,.1);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:32px;
}
.logo{
  display:flex;
  align-items:center;
  gap:12px;
  color:#fff;
  font-weight:700;
}
.logo-mark{
  width:38px;height:38px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--gradient-blue);
  color:#fff;font-weight:900;font-size:18px;
  box-shadow:0 6px 16px rgba(59,130,246,.35);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text small{
  font-size:11px;
  color:var(--text-on-dark-2);
  font-weight:500;
  letter-spacing:.04em;
}
.nav-links{
  display:flex;
  gap:28px;
}
.nav-links a{
  color:var(--text-on-dark-2);
  font-size:14.5px;
  font-weight:500;
  transition:color .2s;
}
.nav-links a:hover{color:#fff}
.nav-cta{
  background:var(--gradient-blue);
  color:#fff;
  padding:9px 20px;
  border-radius:8px;
  font-size:14px;
  font-weight:600;
  transition:all .2s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(59,130,246,.35)}

/* ===================== 1. Hero ===================== */
.hero{
  position:relative;
  padding:160px 0 96px;
  background:linear-gradient(180deg,#0a0f1f 0%,#0e1530 60%,#101a3a 100%);
  color:var(--text-on-dark);
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 18% 20%,rgba(59,130,246,.18),transparent 40%),
    radial-gradient(circle at 82% 70%,rgba(139,92,246,.18),transparent 45%),
    linear-gradient(rgba(99,102,241,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(99,102,241,.06) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:64px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-block;
  padding:8px 16px;
  border-radius:999px;
  background:rgba(59,130,246,.12);
  border:1px solid rgba(96,165,250,.28);
  color:#bfdbfe;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
}
.hero-title{
  margin-top:24px;
  font-size:60px;
  line-height:1.15;
  font-weight:900;
  letter-spacing:-0.02em;
  color:#fff;
}
.hero-sub{
  margin-top:24px;
  font-size:17px;
  line-height:1.85;
  color:var(--text-on-dark-2);
  max-width:580px;
}
.hero-sub strong{color:#fff}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.hero-tags li{
  padding:7px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  color:var(--text-on-dark);
  font-size:13.5px;
  font-weight:500;
}
.hero-actions{
  margin-top:36px;
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}
.hero-visual{
  position:relative;
  width:min(100%, 520px);
  margin:0 auto;
  border-radius:24px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.08);
  overflow:hidden;
  box-shadow:0 30px 80px rgba(0,0,0,.35);
}

/* ===================== 2. 痛点 ===================== */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}

.pain-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px 28px;
  transition:all .25s ease;
  position:relative;
  overflow:hidden;
}
.pain-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--gradient-blue);
  transform:scaleX(0);transform-origin:left;
  transition:transform .35s ease;
}
.pain-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow);
  border-color:rgba(59,130,246,.25);
}
.pain-card:hover::before{transform:scaleX(1)}
.pain-num{
  display:inline-block;
  font-size:14px;
  font-weight:700;
  color:var(--primary);
  letter-spacing:.1em;
  margin-bottom:14px;
}
.pain-card h3{font-size:19px;font-weight:700;margin-bottom:10px;color:var(--text)}
.pain-card p{color:var(--text-2);font-size:14.5px;line-height:1.75}

/* ===================== 3. 价值 ===================== */
.value-grid{margin-top:8px}
.value-card{
  position:relative;
  background:rgba(255,255,255,.03);
  border:1px solid var(--border-dark);
  border-radius:var(--radius);
  padding:36px 28px;
  transition:all .25s ease;
}
.value-card:hover{
  transform:translateY(-4px);
  border-color:rgba(96,165,250,.4);
  box-shadow:0 16px 36px rgba(59,130,246,.12);
  background:rgba(59,130,246,.06);
}
.value-icon{
  width:52px;height:52px;
  border-radius:14px;
  margin-bottom:20px;
  background:var(--gradient-blue);
  position:relative;
  box-shadow:0 8px 22px rgba(59,130,246,.3);
}
.value-icon::after{
  content:"";position:absolute;inset:8px;
  border:2px solid rgba(255,255,255,.55);
  border-radius:8px;
}
.value-icon-2{background:linear-gradient(135deg,#10b981,#06b6d4)}
.value-icon-2{box-shadow:0 8px 22px rgba(16,185,129,.3)}
.value-icon-3{background:linear-gradient(135deg,#f59e0b,#ef4444)}
.value-icon-3{box-shadow:0 8px 22px rgba(245,158,11,.3)}
.value-icon-4{background:linear-gradient(135deg,#a78bfa,#ec4899)}
.value-icon-4{box-shadow:0 8px 22px rgba(167,139,250,.3)}
.value-card h3{font-size:22px;font-weight:700;color:#fff;margin-bottom:12px}
.value-card p{color:var(--text-on-dark-2);font-size:14.5px;line-height:1.85}

/* ===================== 4. 三大能力 ===================== */
.cap-grid{margin-top:8px}
.cap-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:40px 32px;
  text-align:left;
  transition:all .3s ease;
  position:relative;
}
.cap-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(99,102,241,.3);
}
.cap-card-mid{
  background:linear-gradient(180deg,#fff 0%,#f0f5ff 100%);
  border-color:rgba(99,102,241,.2);
}
.cap-tag{
  display:inline-block;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(99,102,241,.1);
  color:var(--primary-2);
  font-weight:700;
  font-size:13px;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.cap-card h3{font-size:22px;font-weight:700;margin-bottom:14px}
.cap-card p{color:var(--text-2);font-size:14.5px;line-height:1.85}

/* ===================== 5. 全景能力 ===================== */
.feat-grid{margin-top:8px;gap:20px}
.feat-card{
  position:relative;
  padding:30px 28px 30px 30px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--border-dark);
  border-radius:var(--radius);
  transition:all .25s ease;
}
.feat-card:hover{
  border-color:rgba(96,165,250,.35);
  background:rgba(59,130,246,.05);
  transform:translateY(-3px);
}
.feat-no{
  position:absolute;
  top:18px;right:22px;
  font-size:34px;
  font-weight:900;
  color:rgba(255,255,255,.06);
  letter-spacing:-.04em;
}
.feat-card h3{
  font-size:18px;
  font-weight:700;
  color:#fff;
  margin-bottom:10px;
  position:relative;
  padding-left:14px;
}
.feat-card h3::before{
  content:"";
  position:absolute;left:0;top:9px;
  width:4px;height:14px;
  background:var(--gradient-blue);
  border-radius:2px;
}
.feat-card p{color:var(--text-on-dark-2);font-size:14px;line-height:1.85}

/* ===================== 6. 体系架构 ===================== */
.arch-layers{
  display:grid;
  grid-template-columns:1fr 1.2fr 1fr;
  gap:24px;
}
.arch-layer{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  position:relative;
  transition:all .25s;
}
.arch-layer:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.arch-layer-core{
  background:linear-gradient(135deg,#eef4ff 0%,#fff 100%);
  border-color:rgba(59,130,246,.25);
}
.arch-layer-tag{
  display:inline-block;
  padding:6px 14px;
  background:var(--gradient-blue);
  color:#fff;
  font-size:13px;
  font-weight:700;
  border-radius:8px;
  margin-bottom:14px;
}
.arch-layer p{color:var(--text-2);font-size:14.5px;line-height:1.8}

/* ===================== 7. 安全（左右分栏） ===================== */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.split-reverse .split-text{order:2}
.split-reverse .split-figure{order:1}
.split-text h3{
  font-size:24px;
  font-weight:700;
  margin-bottom:14px;
}
.section-dark .split-text h3{color:#fff}
.split-figure{
  width:min(100%, 500px);
  margin:0 auto;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-dark);
}
.section-light .split-figure{
  background:#eef2f8;
  border-color:var(--border);
}
.split-figure img{width:100%;display:block}

@media (max-width: 1120px){
  .hero-visual,
  .split-figure,
  .section-figure,
  .section-figure-lg{
    width:100%;
  }
}

.check-list{
  margin-top:28px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px 20px;
}
.check-list li{
  position:relative;
  padding:12px 14px 12px 38px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-dark);
  border-radius:10px;
  font-size:14.5px;
  color:var(--text-on-dark);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:14px;top:50%;
  width:14px;height:14px;
  margin-top:-7px;
  border-radius:50%;
  background:var(--gradient-blue);
  box-shadow:0 0 0 4px rgba(59,130,246,.18);
}

/* ===================== 8. 可观测 ===================== */
.metric-list{
  margin-top:28px;
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:12px 16px;
}
.metric-list li{
  background:#fff;
  border:1px solid var(--border);
  padding:14px 18px;
  border-radius:10px;
  font-size:14.5px;
  font-weight:500;
  color:var(--text);
  position:relative;
  padding-left:36px;
  transition:all .2s;
}
.metric-list li::before{
  content:"";
  position:absolute;
  left:14px;top:50%;
  width:8px;height:8px;
  margin-top:-4px;
  border-radius:50%;
  background:var(--gradient-blue);
}
.metric-list li:hover{
  border-color:rgba(59,130,246,.3);
  box-shadow:var(--shadow-sm);
  transform:translateX(2px);
}

/* ===================== 9. 场景 Tabs ===================== */
.tabs{margin-top:8px}
.tab-nav{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  justify-content:center;
  margin-bottom:36px;
  padding:6px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-dark);
  border-radius:14px;
  width:fit-content;
  margin-left:auto;
  margin-right:auto;
}
.tab-btn{
  padding:12px 22px;
  border-radius:10px;
  font-size:14.5px;
  font-weight:600;
  color:var(--text-on-dark-2);
  transition:all .25s;
}
.tab-btn:hover{color:#fff}
.tab-btn.is-active{
  background:var(--gradient-blue);
  color:#fff;
  box-shadow:0 8px 22px rgba(59,130,246,.3);
}
.tab-panel{display:none;animation:fadein .35s ease}
.tab-panel.is-active{display:block}
@keyframes fadein{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.tab-panel .split-text h3{font-size:28px;color:#fff;margin-bottom:18px}
.tab-panel .split-text p{font-size:16px;line-height:1.95;color:var(--text-on-dark-2)}

/* ===================== 10. 生态 ===================== */
.eco-list{
  margin-top:48px;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:16px;
}
.eco-list li{
  text-align:center;
  padding:24px 16px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  font-weight:600;
  font-size:14.5px;
  color:var(--text);
  transition:all .25s;
}
.eco-list li:hover{
  border-color:rgba(59,130,246,.3);
  box-shadow:var(--shadow-sm);
  transform:translateY(-3px);
  color:var(--primary);
}

/* ===================== 11. 部署 ===================== */
.deploy-grid{margin-top:8px}
.deploy-card{
  background:rgba(255,255,255,.03);
  border:1px solid var(--border-dark);
  border-radius:var(--radius);
  padding:32px 28px;
  transition:all .25s;
  border-left:3px solid transparent;
}
.deploy-card:hover{
  border-color:rgba(96,165,250,.35);
  border-left-color:var(--primary);
  background:rgba(59,130,246,.05);
  transform:translateY(-3px);
}
.deploy-card h3{font-size:19px;color:#fff;margin-bottom:10px;font-weight:700}
.deploy-card p{color:var(--text-on-dark-2);font-size:14.5px;line-height:1.85}

/* ===================== 12. 客户 ===================== */
.customer-list{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:16px;
}
.customer-list li{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 20px;
  text-align:center;
  transition:all .25s;
}
.customer-list li:hover{
  border-color:rgba(59,130,246,.3);
  box-shadow:var(--shadow);
  transform:translateY(-4px);
}
.customer-list li strong{
  display:block;
  font-size:16px;
  font-weight:700;
  color:var(--text);
  margin-bottom:8px;
}
.customer-list li span{
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.7;
}

/* ===================== 13. CTA ===================== */
.cta{
  position:relative;
  padding:120px 0;
  text-align:center;
  background:linear-gradient(135deg,#0a0f1f 0%,#101a3a 50%,#1a1147 100%);
  color:#fff;
  overflow:hidden;
}
.cta-bg{
  position:absolute;inset:0;
  z-index:0;
  opacity:.5;
}
.cta-bg img{width:100%;height:100%;object-fit:cover}
.cta-inner{position:relative;z-index:1}
.cta-title{
  font-size:42px;
  font-weight:900;
  line-height:1.3;
  letter-spacing:-0.02em;
  margin-bottom:20px;
}
.cta-sub{
  font-size:17px;
  color:var(--text-on-dark-2);
  max-width:660px;
  margin:0 auto 36px;
  line-height:1.85;
}
.cta-actions{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}

/* ===================== 页脚 ===================== */
.footer{
  background:#050912;
  padding:36px 0;
  border-top:1px solid rgba(255,255,255,.06);
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:14px;
  color:#fff;
}
.footer-name{font-weight:700;font-size:16px}
.footer-en{font-size:12px;color:var(--text-on-dark-3);margin-top:2px}
.footer-copy{color:var(--text-on-dark-3);font-size:13px}

/* ===================== 响应式 ===================== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero-title{font-size:48px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .arch-layers{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:36px}
  .split-reverse .split-text{order:1}
  .split-reverse .split-figure{order:2}
  .eco-list,.customer-list{grid-template-columns:repeat(3,1fr)}
  .nav-links{display:none}
}
@media (max-width:640px){
  .section{padding:64px 0}
  .section-title{font-size:28px}
  .hero{padding:120px 0 64px}
  .hero-title{font-size:36px}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .check-list,.metric-list{grid-template-columns:1fr}
  .eco-list,.customer-list{grid-template-columns:repeat(2,1fr)}
  .cta-title{font-size:30px}
  .tab-nav{width:100%;flex-direction:column}
  .tab-btn{text-align:left}
}