/* ============================================================
   Insighter 官网 · style.css
   深色科技风 · 品牌色青蓝渐变 · 响应式 · 无外部依赖
   ============================================================ */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#060910; --bg2:#0a1120; --card:rgba(255,255,255,.03); --card-hi:rgba(255,255,255,.05);
  --border:rgba(255,255,255,.09); --border-hi:rgba(34,211,238,.5);
  --text:#e8eef7; --text2:#8b96ab; --text3:#5b6478;
  --brand:#22d3ee; --brand2:#3b82f6; --mint:#5eead4;
  --grad:linear-gradient(135deg,#22d3ee 0%,#3b82f6 100%);
  --grad-soft:linear-gradient(135deg,rgba(34,211,238,.14),rgba(59,130,246,.14));
  --maxw:1180px; --radius:16px;
}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px; line-height:1.6; -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ---- 按钮 ---- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:10px;
  font-size:15px;font-weight:600;cursor:pointer;transition:transform .15s,box-shadow .25s,background .25s;white-space:nowrap;border:1px solid transparent}
.btn-primary{background:var(--grad);color:#04121f;box-shadow:0 6px 24px rgba(34,211,238,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 32px rgba(34,211,238,.42)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--border-hi);background:rgba(34,211,238,.08)}

/* ---- 顶部导航 ---- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,border-color .3s,backdrop-filter .3s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(6,9,16,.78);backdrop-filter:blur(14px);border-bottom-color:var(--border)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:16px 24px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:.5px}
.brand-mark{display:flex;filter:drop-shadow(0 2px 8px rgba(34,211,238,.4))}
.brand-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;gap:26px;margin-left:8px}
.nav-links a{color:var(--text2);font-size:15px;font-weight:500;transition:color .2s;position:relative}
.nav-links a:hover{color:var(--text)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--grad);transition:width .25s}
.nav-links a:hover::after{width:100%}
.nav-cta{margin-left:auto;padding:9px 18px;font-size:14px}
.nav-burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;margin-left:auto}
.nav-burger span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.25s}

/* ---- Hero ---- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:120px 24px 80px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;opacity:.9}
.hero-bg::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 60% 50% at 50% 42%,transparent,var(--bg) 78%)}
.topo{width:100%;height:100%;position:absolute;inset:0}
.topo-lines path{stroke-dasharray:6 10;animation:flow 3s linear infinite}
@keyframes flow{to{stroke-dashoffset:-32}}
.topo-nodes .core{animation:breathe 3s ease-in-out infinite}
@keyframes breathe{0%,100%{r:9;opacity:1}50%{r:13;opacity:.7}}
.topo-nodes .pulse{fill:var(--mint);animation:blink 2.4s ease-in-out infinite}
.topo-nodes .pulse:nth-child(3){animation-delay:.3s}.topo-nodes .pulse:nth-child(5){animation-delay:.7s}
.topo-nodes .pulse:nth-child(7){animation-delay:1.1s}.topo-nodes .pulse:nth-child(9){animation-delay:1.5s}
@keyframes blink{0%,100%{opacity:.35}50%{opacity:1}}
.hero-inner{position:relative;z-index:2;max-width:860px}
.hero-badge{display:inline-block;padding:7px 18px;border-radius:20px;background:var(--grad-soft);border:1px solid rgba(34,211,238,.28);
  color:var(--mint);font-size:13px;font-weight:600;letter-spacing:.5px;margin-bottom:28px}
.hero-title{font-size:clamp(38px,7vw,74px);font-weight:800;line-height:1.08;letter-spacing:-1px;margin-bottom:24px}
.hero-sub{font-size:clamp(16px,2.2vw,19px);color:var(--text2);max-width:640px;margin:0 auto 38px;line-height:1.75}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-stats{display:flex;gap:48px;justify-content:center;margin-top:64px;flex-wrap:wrap}
.hero-stats>div{display:flex;flex-direction:column;gap:4px}
.hero-stats b{font-size:38px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.hero-stats span{font-size:13px;color:var(--text2)}

/* ---- Section 通用 ---- */
.section{max-width:var(--maxw);margin:0 auto;padding:100px 24px}
.band{max-width:none;background:linear-gradient(180deg,transparent,rgba(59,130,246,.04),transparent)}
.band>*{max-width:var(--maxw);margin-left:auto;margin-right:auto}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.eyebrow{display:inline-block;color:var(--brand);font-size:13px;font-weight:700;letter-spacing:2px;text-transform:uppercase;margin-bottom:14px}
.section-head h2{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-.5px;margin-bottom:16px}
.section-head p{color:var(--text2);font-size:17px}

/* ---- 特性网格 ---- */
.grid{display:grid;gap:18px}
.features{grid-template-columns:repeat(3,1fr)}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;
  transition:transform .25s,border-color .25s,background .25s}
.card:hover{transform:translateY(-4px);border-color:var(--border-hi);background:var(--card-hi)}
.card h3{font-size:18px;font-weight:700;margin:18px 0 10px}
.card p{color:var(--text2);font-size:14.5px;line-height:1.7}

/* ---- 图标 (CSS mask + SVG data URI, 品牌渐变着色) ---- */
.ic{width:46px;height:46px;border-radius:12px;background:var(--grad-soft);border:1px solid rgba(34,211,238,.25);
  display:flex;position:relative}
.ic::after{content:"";position:absolute;inset:11px;background:var(--grad);
  -webkit-mask-size:contain;mask-size:contain;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:center;mask-position:center}
.ic-speed::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M13 2L4.5 13H11l-1 9 8.5-11H12l1-9z"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M13 2L4.5 13H11l-1 9 8.5-11H12l1-9z"/></svg>')}
.ic-pppoe::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.55a11 11 0 0 1 14 0M8.5 16a6 6 0 0 1 7 0M2 8.82a15 15 0 0 1 20 0"/><line x1="12" y1="20" x2="12" y2="20"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.55a11 11 0 0 1 14 0M8.5 16a6 6 0 0 1 7 0M2 8.82a15 15 0 0 1 20 0"/><line x1="12" y1="20" x2="12" y2="20"/></svg>')}
.ic-multi::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="6" cy="6" r="3"/><circle cx="6" cy="18" r="3"/><circle cx="18" cy="12" r="3"/><path d="M9 6h6a3 3 0 0 1 3 3M9 18h6a3 3 0 0 0 3-3"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="6" cy="6" r="3"/><circle cx="6" cy="18" r="3"/><circle cx="18" cy="12" r="3"/><path d="M9 6h6a3 3 0 0 1 3 3M9 18h6a3 3 0 0 0 3-3"/></svg>')}
.ic-dns::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><path d="M2 12h20M12 2a15 15 0 0 1 0 20M12 2a15 15 0 0 0 0 20"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><path d="M2 12h20M12 2a15 15 0 0 1 0 20M12 2a15 15 0 0 0 0 20"/></svg>')}
.ic-app::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="3" width="7" height="7" rx="1"/><rect x="14" y="3" width="7" height="7" rx="1"/><rect x="14" y="14" width="7" height="7" rx="1"/><rect x="3" y="14" width="7" height="7" rx="1"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="3" width="7" height="7" rx="1"/><rect x="14" y="3" width="7" height="7" rx="1"/><rect x="14" y="14" width="7" height="7" rx="1"/><rect x="3" y="14" width="7" height="7" rx="1"/></svg>')}
.ic-shield::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 2l8 4v6c0 5-3.5 8.5-8 10-4.5-1.5-8-5-8-10V6z"/><path d="M9 12l2 2 4-4"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 2l8 4v6c0 5-3.5 8.5-8 10-4.5-1.5-8-5-8-10V6z"/><path d="M9 12l2 2 4-4"/></svg>')}
.ic-cloud::after,.ic-cloud2::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 10h-1.26A8 8 0 1 0 9 20h9a5 5 0 0 0 0-10z"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 10h-1.26A8 8 0 1 0 9 20h9a5 5 0 0 0 0-10z"/></svg>')}
.ic-olt::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="4" width="20" height="6" rx="1.5"/><rect x="2" y="14" width="20" height="6" rx="1.5"/><line x1="6" y1="7" x2="6" y2="7"/><line x1="6" y1="17" x2="6" y2="17"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="4" width="20" height="6" rx="1.5"/><rect x="2" y="14" width="20" height="6" rx="1.5"/><line x1="6" y1="7" x2="6" y2="7"/><line x1="6" y1="17" x2="6" y2="17"/></svg>')}
.ic-cache::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><ellipse cx="12" cy="5" rx="8" ry="3"/><path d="M4 5v6c0 1.66 3.58 3 8 3 1.4 0 2.72-.13 3.87-.36M20 5v4"/><path d="M4 11v6c0 1.66 3.58 3 8 3 .7 0 1.37-.03 2-.1"/><path d="M19 14l-3 4h4l-3 4"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><ellipse cx="12" cy="5" rx="8" ry="3"/><path d="M4 5v6c0 1.66 3.58 3 8 3 1.4 0 2.72-.13 3.87-.36M20 5v4"/><path d="M4 11v6c0 1.66 3.58 3 8 3 .7 0 1.37-.03 2-.1"/><path d="M19 14l-3 4h4l-3 4"/></svg>')}
.ic-bond::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="6" cy="6" r="3"/><circle cx="6" cy="18" r="3"/><path d="M9 6h4a5 5 0 0 1 5 5v1M9 18h4a5 5 0 0 0 5-5"/><circle cx="20" cy="12" r="2.4"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="6" cy="6" r="3"/><circle cx="6" cy="18" r="3"/><path d="M9 6h4a5 5 0 0 1 5 5v1M9 18h4a5 5 0 0 0 5-5"/><circle cx="20" cy="12" r="2.4"/></svg>')}
.ic-route::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="6" cy="19" r="3"/><path d="M9 19h8.5a3.5 3.5 0 0 0 0-7h-11a3.5 3.5 0 0 1 0-7H15"/><circle cx="18" cy="5" r="3"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="6" cy="19" r="3"/><path d="M9 19h8.5a3.5 3.5 0 0 0 0-7h-11a3.5 3.5 0 0 1 0-7H15"/><circle cx="18" cy="5" r="3"/></svg>')}
.ic-log::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/><path d="M14 2v6h6"/><path d="M9 13h6M9 17h6M9 9h1"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/><path d="M14 2v6h6"/><path d="M9 13h6M9 17h6M9 9h1"/></svg>')}
.ic-phone::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M22 16.92v3a2 2 0 0 1-2.18 2 19.79 19.79 0 0 1-8.63-3.07 19.5 19.5 0 0 1-6-6 19.79 19.79 0 0 1-3.07-8.67A2 2 0 0 1 4.11 2h3a2 2 0 0 1 2 1.72c.13.96.36 1.9.68 2.81a2 2 0 0 1-.45 2.11L8.09 9.91a16 16 0 0 0 6 6l1.27-1.27a2 2 0 0 1 2.11-.45c.91.32 1.85.55 2.81.68A2 2 0 0 1 22 16.92z"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M22 16.92v3a2 2 0 0 1-2.18 2 19.79 19.79 0 0 1-8.63-3.07 19.5 19.5 0 0 1-6-6 19.79 19.79 0 0 1-3.07-8.67A2 2 0 0 1 4.11 2h3a2 2 0 0 1 2 1.72c.13.96.36 1.9.68 2.81a2 2 0 0 1-.45 2.11L8.09 9.91a16 16 0 0 0 6 6l1.27-1.27a2 2 0 0 1 2.11-.45c.91.32 1.85.55 2.81.68A2 2 0 0 1 22 16.92z"/></svg>')}
.ic-mail::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="4" width="20" height="16" rx="2"/><path d="M22 7l-10 6L2 7"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="4" width="20" height="16" rx="2"/><path d="M22 7l-10 6L2 7"/></svg>')}

/* ---- 性能指标 ---- */
.perf{grid-template-columns:repeat(6,1fr);gap:14px}
.metric{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px 14px;text-align:center;transition:border-color .25s}
.metric:hover{border-color:var(--border-hi)}
.metric b{display:block;font-size:32px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:8px}
.metric span{color:var(--text2);font-size:13px;line-height:1.5}

/* ---- 应用场景 ---- */
.scenarios{grid-template-columns:repeat(4,1fr)}
.scene{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px 24px;transition:transform .25s,border-color .25s}
.scene:hover{transform:translateY(-4px);border-color:var(--border-hi)}
.scene h3{font-size:17px;margin:16px 0 10px}
.scene p{color:var(--text2);font-size:14px;line-height:1.7}
.scene-ic{width:44px;height:44px;border-radius:12px;background:var(--grad-soft);border:1px solid rgba(34,211,238,.25);position:relative}
.scene-ic::after{content:"";position:absolute;inset:10px;background:var(--grad);-webkit-mask-size:contain;mask-size:contain;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:center;mask-position:center}
.ic-broadband::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-6 9 6v11a1 1 0 0 1-1 1h-5v-7H9v7H4a1 1 0 0 1-1-1z"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-6 9 6v11a1 1 0 0 1-1 1h-5v-7H9v7H4a1 1 0 0 1-1-1z"/></svg>')}
.ic-hotel::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="4" y="2" width="16" height="20" rx="1.5"/><path d="M9 7h.01M15 7h.01M9 11h.01M15 11h.01M9 15h.01M15 15h.01M10 22v-3h4v3"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="4" y="2" width="16" height="20" rx="1.5"/><path d="M9 7h.01M15 7h.01M9 11h.01M15 11h.01M9 15h.01M15 15h.01M10 22v-3h4v3"/></svg>')}
.ic-enterprise::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 21h18M6 21V7l6-4 6 4v14M10 9h.01M14 9h.01M10 13h.01M14 13h.01M10 17h.01M14 17h.01"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 21h18M6 21V7l6-4 6 4v14M10 9h.01M14 9h.01M10 13h.01M14 13h.01M10 17h.01M14 17h.01"/></svg>')}
.ic-park::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 21h18M5 21V8l5-3 5 3M15 21V11l4-2v12M9 12h.01M9 16h.01"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 21h18M5 21V8l5-3 5 3M15 21V11l4-2v12M9 12h.01M9 16h.01"/></svg>')}

/* ---- 产品展示 (图片占位) ---- */
.showcase{display:grid;grid-template-columns:1.6fr 1fr;gap:22px;max-width:var(--maxw);margin:0 auto}
.shot{position:relative;border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;
  background:linear-gradient(135deg,rgba(34,211,238,.06),rgba(59,130,246,.06));aspect-ratio:3/2;min-height:280px}
.shot-ui{aspect-ratio:16/10}
.shot-inner{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;color:var(--text2)}
.shot-inner span{font-size:15px;font-weight:600;color:var(--text2);line-height:1.6}
.shot-inner em{font-size:12px;color:var(--text3,#5b6478);font-style:normal;opacity:.7}
.shot-ic{width:56px;height:56px;border-radius:14px;background:var(--grad-soft);border:1px solid rgba(34,211,238,.3);position:relative}
.shot-ic::after{content:"";position:absolute;inset:14px;background:var(--grad);-webkit-mask-size:contain;mask-size:contain;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:center;mask-position:center}
.ic-device::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="7" width="20" height="10" rx="2"/><circle cx="7" cy="12" r="1"/><circle cx="11" cy="12" r="1"/><path d="M16 12h3"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="7" width="20" height="10" rx="2"/><circle cx="7" cy="12" r="1"/><circle cx="11" cy="12" r="1"/><path d="M16 12h3"/></svg>')}
.ic-dash::after{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="3" width="18" height="18" rx="2"/><path d="M3 9h18M9 21V9"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="3" width="18" height="18" rx="2"/><path d="M3 9h18M9 21V9"/></svg>')}
.shot img{width:100%;height:100%;object-fit:cover}

/* ---- 后台截图轮播 ---- */
.carousel{position:relative;border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;background:#0b1120}
.carousel-track{display:flex;transition:transform .55s cubic-bezier(.4,0,.2,1)}
.carousel .slide{flex:0 0 100%;aspect-ratio:1600/823;margin:0}
.carousel .slide img{width:100%;height:100%;object-fit:cover;display:block;cursor:zoom-in}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;
  border:1px solid var(--border-hi);background:rgba(10,14,26,.6);backdrop-filter:blur(4px);color:var(--text);
  font-size:20px;line-height:1;cursor:pointer;transition:background .2s,border-color .2s;display:flex;align-items:center;justify-content:center}
.carousel-btn:hover{background:rgba(10,14,26,.85);border-color:var(--brand)}
.carousel-btn.prev{left:14px}
.carousel-btn.next{right:14px}
.carousel-caption{position:absolute;left:16px;bottom:16px;padding:6px 14px;border-radius:999px;
  background:rgba(10,14,26,.65);backdrop-filter:blur(4px);font-size:13.5px;font-weight:600;color:var(--text)}
.carousel-dots{position:absolute;right:16px;bottom:16px;display:flex;gap:7px}
.carousel-dots .dot{width:8px;height:8px;border-radius:50%;border:none;background:rgba(255,255,255,.3);cursor:pointer;padding:0;transition:background .2s,transform .2s}
.carousel-dots .dot.is-active{background:var(--brand);transform:scale(1.3)}

/* ---- 截图灯箱(点击放大原图) ---- */
.lightbox{position:fixed;inset:0;z-index:999;display:none;align-items:center;justify-content:center;
  padding:40px;background:rgba(5,8,16,.92);backdrop-filter:blur(6px);cursor:zoom-out}
.lightbox.is-open{display:flex}
.lightbox img{max-width:100%;max-height:100%;border-radius:10px;box-shadow:0 20px 60px rgba(0,0,0,.5);cursor:default}
.lightbox-close{position:absolute;top:20px;right:24px;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--border-hi);background:rgba(255,255,255,.06);color:var(--text);font-size:18px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}
.lightbox-close:hover{background:rgba(255,255,255,.14)}

/* ---- 云端运维 ---- */
.platform-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;max-width:var(--maxw);margin:0 auto}
.platform-txt h2{font-size:clamp(26px,3.6vw,38px);font-weight:800;margin:14px 0 18px}
.platform-txt>p{color:var(--text2);font-size:16.5px;line-height:1.8;margin-bottom:24px}
.checks{list-style:none;margin-bottom:30px;display:flex;flex-direction:column;gap:12px}
.checks li{position:relative;padding-left:30px;color:var(--text);font-size:15.5px}
.checks li::before{content:"";position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:6px;background:var(--grad-soft);border:1px solid rgba(34,211,238,.4)}
.checks li::after{content:"";position:absolute;left:6px;top:7px;width:8px;height:5px;border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(-45deg)}
.platform-vis{display:flex;justify-content:center;align-items:center;min-height:340px}
.orbit{position:relative;width:300px;height:300px}
.orbit-core{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:88px;height:88px;border-radius:24px;
  background:var(--grad-soft);border:1px solid rgba(34,211,238,.4);display:flex;align-items:center;justify-content:center;z-index:3;box-shadow:0 0 50px rgba(34,211,238,.3)}
.orbit-core .ic{width:52px;height:52px;background:none;border:none}
.orbit-core .ic::after{inset:0}
.orbit-ring{position:absolute;top:50%;left:50%;border:1px solid var(--border);border-radius:50%}
.orbit-ring.r1{width:190px;height:190px;transform:translate(-50%,-50%);animation:spin 16s linear infinite}
.orbit-ring.r2{width:290px;height:290px;transform:translate(-50%,-50%);animation:spin 26s linear infinite reverse}
.orbit-ring i{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--brand);box-shadow:0 0 12px var(--brand)}
.orbit-ring.r1 i:nth-child(1){top:-6px;left:calc(50% - 6px)}.orbit-ring.r1 i:nth-child(2){bottom:-6px;left:calc(50% - 6px);background:var(--brand2);box-shadow:0 0 12px var(--brand2)}.orbit-ring.r1 i:nth-child(3){top:calc(50% - 6px);right:-6px;background:var(--mint);box-shadow:0 0 12px var(--mint)}
.orbit-ring.r2 i:nth-child(1){top:-6px;left:calc(50% - 6px);background:var(--mint)}.orbit-ring.r2 i:nth-child(2){top:calc(50% - 6px);left:-6px}.orbit-ring.r2 i:nth-child(3){bottom:-6px;left:calc(50% - 6px);background:var(--brand2)}.orbit-ring.r2 i:nth-child(4){top:calc(50% - 6px);right:-6px}

/* ---- 定制开发 / 联系我们 ---- */
.contact-list{display:flex;flex-direction:column;gap:14px;margin-top:4px}
.contact-item{display:flex;align-items:center;gap:14px;color:var(--text);font-size:15.5px;font-weight:600;transition:color .2s}
.contact-item:hover{color:var(--brand)}
.contact-item .ic{width:40px;height:40px;flex-shrink:0}
.contact-item .ic::after{inset:10px}
.contact-qr{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;max-width:280px;margin:0 auto}
.contact-qr img{width:180px;height:180px;border-radius:10px;background:#fff;padding:8px}
.qr-label{font-size:14.5px;font-weight:600;color:var(--text)}
@keyframes spin{to{transform:translate(-50%,-50%) rotate(360deg)}}

/* ---- CTA ---- */
.cta{text-align:center;padding:110px 24px;max-width:760px;margin:0 auto}
.cta h2{font-size:clamp(28px,4.4vw,42px);font-weight:800;letter-spacing:-.5px;margin-bottom:16px}
.cta p{color:var(--text2);font-size:18px;margin-bottom:34px}

/* ---- 页脚 ---- */
.foot{border-top:1px solid var(--border);margin-top:40px}
.foot-inner{max-width:var(--maxw);margin:0 auto;padding:48px 24px 28px;display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.foot-brand .brand-text{font-size:22px;font-weight:800}
.foot-brand p{color:var(--text2);font-size:14px;margin-top:6px}
.foot-links{display:flex;gap:26px;flex-wrap:wrap;align-items:flex-start}
.foot-links a{color:var(--text2);font-size:14px;transition:color .2s}
.foot-links a:hover{color:var(--text)}
.foot-bar{max-width:var(--maxw);margin:0 auto;padding:20px 24px 40px;border-top:1px solid var(--border);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--text3,#5b6478);font-size:13px}
.foot-icp a{color:inherit;transition:color .2s}
.foot-icp a:hover{color:var(--text2)}

/* ---- 滚动淡入 ---- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---- 响应式 ---- */
@media(max-width:960px){
  .features,.scenarios{grid-template-columns:repeat(2,1fr)}
  .perf{grid-template-columns:repeat(3,1fr)}
  .platform-wrap{grid-template-columns:1fr;gap:36px}
  .showcase{grid-template-columns:1fr}
}
@media(max-width:720px){
  .nav-links,.nav-cta{display:none}
  .nav-burger{display:flex}
  body.nav-open .nav-links{display:flex;position:fixed;top:64px;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(6,9,16,.97);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);padding:8px 0}
  body.nav-open .nav-links a{padding:14px 24px}
  body.nav-open .nav-links a::after{display:none}
  .hero{padding-top:100px}
  .hero-stats{gap:32px;margin-top:44px}
  .hero-stats b{font-size:30px}
  .section{padding:70px 20px}
  .features,.scenarios,.perf{grid-template-columns:1fr}
  .perf{gap:12px}
  .foot-inner{flex-direction:column;gap:20px}
}