:root{
  --orange:#f97316;
  --orange-d:#ea580c;
  --orange-l:#fb923c;
  --orange-bg:#fff7ed;
  --orange-bg2:#ffedd5;
  --ink:#1f2937;
  --ink-2:#4b5563;
  --ink-3:#9ca3af;
  --line:#f0e3d6;
  --card:#ffffff;
  --shadow:0 10px 40px rgba(249,115,22,.10);
  --shadow-sm:0 4px 18px rgba(249,115,22,.08);
  --radius:18px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:#fffdfb;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,253,251,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1180px;margin:0 auto;padding:14px 28px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:9px;font-weight:900;font-size:21px}
.brand-logo{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--orange-l),var(--orange-d));display:grid;place-items:center;box-shadow:0 4px 12px rgba(249,115,22,.35)}
.brand-logo.sm{font-size:15px}
.nav-links{display:flex;gap:12px;align-items:center}
.btn-ghost{padding:9px 20px;border-radius:10px;border:1.5px solid var(--orange);color:var(--orange-d);font-weight:600;transition:.2s}
.btn-ghost:hover{background:var(--orange-bg)}
.btn-primary{padding:9px 22px;border-radius:10px;background:linear-gradient(135deg,var(--orange-l),var(--orange-d));color:#fff;font-weight:600;box-shadow:0 6px 16px rgba(249,115,22,.3);transition:.2s}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 9px 22px rgba(249,115,22,.4)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:64px 28px 80px}
.hero-bg{position:absolute;inset:0;background:
  radial-gradient(1100px 520px at 12% -5%,var(--orange-bg2),transparent 60%),
  radial-gradient(900px 500px at 100% 0%,#fff3e6,transparent 55%),
  linear-gradient(180deg,#fff8f0,#fffdfb);z-index:-1}
.hero-inner{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:center}
.hero-title{font-size:54px;font-weight:900;line-height:1.18;letter-spacing:-1px}
.hero-title-accent{display:block;background:linear-gradient(90deg,var(--orange-d),var(--orange-l));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-desc{margin-top:20px;color:var(--ink-2);font-size:16.5px}
.hero-features{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 8px}
.hf-item{display:flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);padding:11px 16px;border-radius:13px;font-weight:600;font-size:14px;box-shadow:var(--shadow-sm);transition:.2s}
.hf-item:hover{transform:translateY(-3px);border-color:var(--orange-l)}
.hf-ico{font-size:17px}
.cta-btn{display:inline-flex;align-items:center;gap:10px;margin-top:26px;padding:15px 34px;border-radius:14px;background:linear-gradient(135deg,var(--orange-l),var(--orange-d));color:#fff;font-weight:700;font-size:17px;box-shadow:0 12px 30px rgba(249,115,22,.35);transition:.25s}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(249,115,22,.45)}
.cta-btn .cta-arrow{transition:.25s}
.cta-btn:hover .cta-arrow{transform:translateX(5px)}
.cta-btn.big{font-size:19px;padding:17px 44px}
.hero-tip{margin-top:22px;color:var(--ink-2);font-size:14px;display:flex;align-items:center;gap:7px}

/* hero visual */
.hero-visual{position:relative;height:480px}
.dash-mock{position:absolute;top:10px;left:0;width:560px;background:#fff;border-radius:18px;box-shadow:0 24px 60px rgba(249,115,22,.18);overflow:hidden;display:grid;grid-template-columns:128px 1fr;border:1px solid var(--line)}
.dash-side{background:#fffaf4;padding:14px 10px;border-right:1px solid var(--line)}
.dash-brand{font-weight:800;font-size:14px;display:flex;gap:6px;align-items:center;margin-bottom:14px;padding-left:4px}
.db-logo{width:20px;height:20px;border-radius:6px;background:linear-gradient(135deg,var(--orange-l),var(--orange-d));color:#fff;font-size:11px;display:grid;place-items:center}
.dash-menu .dm{font-size:11.5px;color:var(--ink-2);padding:7px 8px;border-radius:8px;margin-bottom:2px}
.dash-menu .dm.active{background:var(--orange-bg2);color:var(--orange-d);font-weight:700}
.dash-main{padding:16px}
.dash-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.ds-card{background:#fffaf4;border:1px solid var(--line);border-radius:11px;padding:9px 10px;display:flex;flex-direction:column;gap:2px}
.ds-label{font-size:9.5px;color:var(--ink-3)}
.ds-val{font-size:15px;font-weight:800;color:var(--orange-d)}
.ds-up{font-size:8.5px;color:#16a34a}
.dash-charts{display:grid;grid-template-columns:1.5fr 1fr;gap:12px;margin-top:14px}
.dc-title{font-size:11px;font-weight:700;margin-bottom:8px}
.mini-line{width:100%}
.dc-donut{display:flex;flex-direction:column}
.donut{width:84px;height:84px;border-radius:50%;margin:4px auto;position:relative}
.donut span{position:absolute;inset:24%;background:#fff;border-radius:50%}
.donut.sm{width:96px;height:96px}

.phone-mock{position:absolute;right:-6px;bottom:-30px;width:178px;height:362px;background:#1f2937;border-radius:30px;padding:9px;box-shadow:0 30px 70px rgba(0,0,0,.25);z-index:3}
.phone-notch{position:absolute;top:9px;left:50%;transform:translateX(-50%);width:60px;height:16px;background:#1f2937;border-radius:0 0 12px 12px;z-index:5}
.phone-screen{background:#fffaf4;border-radius:22px;height:100%;overflow:hidden;display:flex;flex-direction:column}
.ph-top{font-size:11px;padding:14px 14px 8px;color:var(--ink-2)}
.ph-hero{background:linear-gradient(135deg,var(--orange-l),var(--orange-d));margin:0 12px;border-radius:14px;padding:14px;color:#fff;display:flex;flex-direction:column;gap:2px}
.ph-label{font-size:10px;opacity:.9}
.ph-val{font-size:22px;font-weight:900}
.ph-up{font-size:10px;opacity:.95}
.ph-row{display:flex;justify-content:space-between;margin:10px 14px 0;font-size:11px;color:var(--ink-2)}
.ph-row b{color:var(--ink)}
.ph-list{margin:14px 0 0;flex:1}
.ph-li{display:flex;justify-content:space-between;align-items:center;padding:9px 14px;font-size:11px;border-top:1px solid var(--line)}
.badge{background:var(--orange-bg2);color:var(--orange-d);font-style:normal;font-size:9px;font-weight:700;padding:1px 7px;border-radius:8px}
.badge.red{background:#fee2e2;color:#dc2626}

/* ---------- sections ---------- */
.section{max-width:1180px;margin:0 auto;padding:80px 28px}
.sec-head h2{font-size:34px;font-weight:900}
.sec-head p{color:var(--ink-3);margin-top:8px;font-size:15.5px}
.sec-head.center{text-align:center;margin-bottom:48px}

.feature-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.fcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 18px;text-align:center;box-shadow:var(--shadow-sm);transition:.25s}
.fcard:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--orange-l)}
.fc-ico{width:58px;height:58px;margin:0 auto 14px;border-radius:16px;background:linear-gradient(135deg,var(--orange-bg2),#fff);display:grid;place-items:center;font-size:27px;border:1px solid var(--line)}
.fcard h3{font-size:17px;margin-bottom:8px}
.fcard p{font-size:12.5px;color:var(--ink-2);line-height:1.7}

/* ops */
.ops{background:linear-gradient(180deg,#fff8f0,#fffdfb)}
.ops-inner{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:.85fr 1.15fr;gap:54px;align-items:center}
.ops-list{margin-top:30px;display:flex;flex-direction:column;gap:22px}
.ol-item{display:flex;gap:14px;align-items:flex-start}
.ol-ico{width:42px;height:42px;border-radius:12px;background:var(--orange-bg2);display:grid;place-items:center;font-size:19px;flex-shrink:0}
.ol-item b{font-size:15.5px}
.ol-item p{font-size:13px;color:var(--ink-2)}
.ops-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow)}
.op-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.op-stats>div{display:flex;flex-direction:column;gap:3px}
.op-stats span{font-size:12px;color:var(--ink-3)}
.op-stats b{font-size:21px;font-weight:900;color:var(--orange-d)}
.op-stats i{font-size:11px;color:#16a34a;font-style:normal}
.op-charts{display:grid;grid-template-columns:1.6fr 1fr;gap:20px;margin:24px 0;align-items:center}
.op-warn{background:#fffaf4;border:1px solid var(--line);border-radius:14px;padding:16px}
.op-warn>b{font-size:14px;display:block;margin-bottom:12px}
.ow-row{display:flex;justify-content:space-between;font-size:13px;padding:6px 0;border-top:1px solid var(--line)}
.ow-row i{font-style:normal;color:var(--ink-2)}
.ow-row i.warn{color:#dc2626;font-weight:700}

/* industry */
.industry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.ind-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.25s}
.ind-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.ind-img{height:150px;background-size:cover;background-position:center;position:relative;display:grid;place-items:center}
.ind-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05),rgba(0,0,0,.35))}
.ind-badge{position:relative;z-index:2;width:56px;height:56px;border-radius:50%;background:var(--orange);display:grid;place-items:center;font-size:26px;box-shadow:0 6px 16px rgba(0,0,0,.2)}
.ind-card h3{font-size:18px;text-align:center;margin:18px 0 8px}
.ind-card p{font-size:12.5px;color:var(--ink-2);text-align:center;padding:0 18px 22px;line-height:1.7}

/* why */
.why{background:linear-gradient(180deg,#fffdfb,#fff8f0)}
.why-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.why-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 18px;text-align:center;box-shadow:var(--shadow-sm);transition:.25s}
.why-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.wc-ico{width:60px;height:60px;margin:0 auto 14px;border-radius:50%;background:linear-gradient(135deg,var(--orange-l),var(--orange-d));display:grid;place-items:center;font-size:26px;box-shadow:0 8px 18px rgba(249,115,22,.3)}
.why-card h3{font-size:16px;margin-bottom:7px}
.why-card p{font-size:12.5px;color:var(--ink-2)}

/* end cta */
.end-cta{background:linear-gradient(135deg,var(--orange-d),var(--orange-l));color:#fff;text-align:center;padding:72px 28px;margin:0}
.end-cta h2{font-size:32px;font-weight:900}
.end-cta p{opacity:.95;margin-top:10px;font-size:16px}
.end-cta .cta-btn{background:#fff;color:var(--orange-d);margin-top:28px}
.end-cta .cta-btn:hover{box-shadow:0 16px 40px rgba(0,0,0,.25)}

/* footer */
.footer{background:#1f1410;color:#e9d9cc;padding:36px 28px}
.ft-inner{max-width:1180px;margin:0 auto;text-align:center}
.ft-brand{font-weight:800;font-size:17px;display:flex;gap:8px;justify-content:center;align-items:center}
.footer p{font-size:13px;opacity:.6;margin-top:10px}

/* reveal animation */
.reveal{opacity:0;transform:translateY(28px);transition:.7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* responsive */
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .hero-visual{height:auto;display:flex;justify-content:center;transform:scale(.88)}
  .dash-mock{position:relative;width:100%;max-width:520px}
  .phone-mock{display:none}
  .hero-title{font-size:40px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .ops-inner{grid-template-columns:1fr}
  .industry-grid,.why-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  .feature-grid,.industry-grid,.why-grid{grid-template-columns:1fr}
  .hero-title{font-size:32px}
  .sec-head h2{font-size:26px}
}