:root{
  --color-primary:#2563EB;
  --color-secondary:#3B82F6;
  --color-cta:#F97316;
  --color-background:#F8FAFC;
  --color-text:#1E293B;
  --border:rgba(15,23,42,.10);
  --glass:rgba(255,255,255,.70);
  --glass-strong:rgba(255,255,255,.82);
  --shadow-sm:0 1px 2px rgba(0,0,0,.05);
  --shadow-md:0 10px 30px rgba(2,6,23,.08);
  --shadow-lg:0 18px 60px rgba(2,6,23,.12);
  --radius:14px;
  --container:1120px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--color-text);
  background:
    radial-gradient(1200px 500px at 15% 10%, rgba(37,99,235,.18), transparent 55%),
    radial-gradient(900px 420px at 85% 20%, rgba(249,115,22,.18), transparent 55%),
    radial-gradient(900px 520px at 55% 90%, rgba(59,130,246,.12), transparent 60%),
    var(--color-background);
}

a{color:inherit}
.container{width:min(var(--container), calc(100% - 40px)); margin:0 auto}

.skip-link{
  position:absolute; left:12px; top:12px;
  transform:translateY(-200%);
  background:var(--glass-strong);
  border:1px solid var(--border);
  border-radius:10px;
  padding:10px 12px;
  text-decoration:none;
  box-shadow:var(--shadow-sm);
  z-index:9999;
}
.skip-link:focus{transform:translateY(0); outline:3px solid rgba(37,99,235,.35)}

.topbar{
  position:sticky;
  top:0;
  z-index:50;
  padding:14px 0;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:18px;
  padding:12px 14px;
  box-shadow:var(--shadow-sm);
  backdrop-filter:blur(14px);
}

.brand{display:flex; align-items:center; gap:10px; text-decoration:none; min-width:220px}
.brand-mark{
  width:14px; height:14px; border-radius:6px;
  background:linear-gradient(135deg, var(--color-primary), var(--color-cta));
  box-shadow:0 10px 22px rgba(37,99,235,.25);
}
.brand-name{font-weight:700; letter-spacing:.2px}
.brand-sub{color:rgba(30,41,59,.65); font-weight:600; font-size:12px; margin-left:6px}

.nav{display:flex; align-items:center; gap:16px}
.nav-link{
  text-decoration:none;
  font-weight:600;
  font-size:14px;
  color:rgba(30,41,59,.80);
  padding:10px 10px;
  border-radius:10px;
  transition:background-color .18s ease, color .18s ease, border-color .18s ease;
}
.nav-link:hover{background:rgba(37,99,235,.08); color:rgba(30,41,59,.95)}
.nav-link:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(37,99,235,.30);
}

.topbar-cta{display:flex; gap:10px; align-items:center}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  text-decoration:none;
  border-radius:12px;
  padding:10px 14px;
  font-weight:700;
  font-size:14px;
  border:1px solid transparent;
  box-shadow:var(--shadow-sm);
  transition:background-color .2s ease, border-color .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
  cursor:pointer;
  user-select:none;
}
.btn-primary{
  background:var(--color-cta);
  color:#fff;
}
.btn-primary:hover{transform:translateY(-1px); box-shadow:var(--shadow-md)}
.btn-secondary{
  background:rgba(255,255,255,.65);
  color:var(--color-primary);
  border-color:rgba(37,99,235,.28);
  backdrop-filter:blur(14px);
}
.btn-secondary:hover{background:rgba(255,255,255,.80); transform:translateY(-1px)}
.btn:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(37,99,235,.30), var(--shadow-sm);
}

.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:12px;
  border:1px solid rgba(15,23,42,.10);
  background:rgba(255,255,255,.72);
  cursor:pointer;
  box-shadow:var(--shadow-sm);
  backdrop-filter:blur(14px);
  transition:background-color .18s ease, transform .18s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.85); transform:translateY(-1px)}
.nav-toggle:focus-visible{outline:none; box-shadow:0 0 0 3px rgba(37,99,235,.30), var(--shadow-sm)}

.mobile-nav{
  margin-top:10px;
}
.mobile-nav-inner{
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:18px;
  padding:10px;
  box-shadow:var(--shadow-sm);
  backdrop-filter:blur(14px);
  display:grid;
  gap:6px;
}
.mobile-link{
  text-decoration:none;
  font-weight:700;
  padding:12px 12px;
  border-radius:12px;
  color:rgba(30,41,59,.88);
  transition:background-color .18s ease;
}
.mobile-link:hover{background:rgba(37,99,235,.08)}
.mobile-link:focus-visible{outline:none; box-shadow:0 0 0 3px rgba(37,99,235,.30)}

.hero{padding:44px 0 22px}
.hero-grid{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap:22px;
  align-items:stretch;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  padding:10px 12px;
  border-radius:999px;
  background:rgba(255,255,255,.70);
  border:1px solid rgba(15,23,42,.10);
  box-shadow:var(--shadow-sm);
  backdrop-filter:blur(14px);
  font-weight:700;
  color:rgba(30,41,59,.85);
  font-size:13px;
}
.hero-title{
  margin:0 0 12px;
  font-size:44px;
  line-height:1.08;
  letter-spacing:-.6px;
}
.hero-desc{
  margin:0 0 18px;
  font-size:16px;
  line-height:1.75;
  color:rgba(30,41,59,.80);
}
.hero-actions{display:flex; flex-wrap:wrap; gap:10px; margin-bottom:18px}
.hero-metrics{
  margin:0;
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:10px;
}
.metric{
  background:rgba(255,255,255,.70);
  border:1px solid rgba(15,23,42,.10);
  border-radius:16px;
  padding:12px 14px;
  box-shadow:var(--shadow-sm);
  backdrop-filter:blur(14px);
}
.metric dt{font-size:12px; font-weight:700; color:rgba(30,41,59,.65)}
.metric dd{margin:6px 0 0; font-size:18px; font-weight:800}

.hero-panel{
  position:relative;
  min-height:340px;
}
.hero-bg{
  position:absolute;
  inset:0;
  border-radius:22px;
  background:
    radial-gradient(240px 180px at 20% 20%, rgba(249,115,22,.28), transparent 60%),
    radial-gradient(260px 200px at 80% 25%, rgba(37,99,235,.30), transparent 60%),
    radial-gradient(280px 220px at 55% 85%, rgba(59,130,246,.22), transparent 60%);
  filter:blur(2px);
}

.glass{
  background:var(--glass);
  border:1px solid rgba(15,23,42,.12);
  box-shadow:var(--shadow-md);
  backdrop-filter:blur(16px);
}
.card{
  border-radius:var(--radius);
  padding:18px;
  transition:box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}
.card:hover{
  box-shadow:var(--shadow-lg);
  transform:translateY(-2px);
  border-color:rgba(37,99,235,.20);
}
.card:focus-within{
  box-shadow:0 0 0 3px rgba(37,99,235,.24), var(--shadow-md);
}
.hero-card{position:relative; z-index:1; margin:18px}
.card-head{
  display:flex;
  gap:12px;
  align-items:flex-start;
  margin-bottom:12px;
}
.icon{
  width:40px;
  height:40px;
  border-radius:14px;
  display:grid;
  place-items:center;
  color:rgba(30,41,59,.92);
  background:rgba(255,255,255,.75);
  border:1px solid rgba(15,23,42,.10);
  box-shadow:var(--shadow-sm);
}
.card-title{margin:0; font-weight:800}
.card-sub{margin:4px 0 0; color:rgba(30,41,59,.68); font-size:13px; font-weight:600}

.checklist{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:10px;
}
.checklist li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  color:rgba(30,41,59,.82);
  font-weight:650;
  line-height:1.55;
}
.check{
  width:22px;
  height:22px;
  border-radius:10px;
  display:grid;
  place-items:center;
  flex:0 0 auto;
  color:#0f172a;
  background:rgba(249,115,22,.16);
  border:1px solid rgba(249,115,22,.22);
}

.section{padding:34px 0}
.section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:18px; margin-bottom:16px}
.section-title{margin:0; font-size:24px; letter-spacing:-.2px}
.section-desc{margin:0; max-width:680px; color:rgba(30,41,59,.75); line-height:1.7; font-weight:550}

.grid-3{display:grid; grid-template-columns:repeat(3, 1fr); gap:14px}
.grid-2{display:grid; grid-template-columns:repeat(2, 1fr); gap:14px}

.card-body{margin:0; color:rgba(30,41,59,.76); line-height:1.75; font-weight:520}
.card-title-lg{margin:0 0 8px; font-size:18px; font-weight:850; letter-spacing:-.2px}

.feature{display:flex; gap:12px; align-items:flex-start}
.feature-icon{
  width:44px; height:44px; border-radius:16px;
  display:grid; place-items:center;
  background:rgba(37,99,235,.10);
  border:1px solid rgba(37,99,235,.18);
  color:rgba(30,41,59,.92);
  flex:0 0 auto;
}
.feature-title{margin:0; font-size:16px; font-weight:850}
.feature-desc{margin:6px 0 0; color:rgba(30,41,59,.74); line-height:1.7; font-weight:520}

.cta-slab{
  margin-top:16px;
  border-radius:18px;
  padding:16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}
.cta-title{margin:0; font-size:16px; font-weight:900}
.cta-desc{margin:6px 0 0; color:rgba(30,41,59,.74); line-height:1.7; font-weight:520}

.footer{
  padding:34px 0 18px;
  border-top:1px solid rgba(15,23,42,.10);
  background:rgba(255,255,255,.35);
  backdrop-filter:blur(10px);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:16px;
  align-items:start;
}
.footer-brand{display:flex; gap:10px; align-items:center; margin-bottom:10px}
.footer-title{margin:0; font-weight:900; letter-spacing:-.2px}
.footer-sub{margin:2px 0 0; color:rgba(30,41,59,.70); font-weight:650; font-size:13px}
.footer-desc{margin:0; color:rgba(30,41,59,.74); line-height:1.75; font-weight:520; max-width:520px}

.footer-card{border-radius:18px; padding:16px}
.footer-card-title{margin:0 0 10px; font-size:16px; font-weight:900}
.contact-list{margin:0; display:grid; gap:10px}
.contact-item{display:grid; grid-template-columns:94px 1fr; gap:10px; align-items:baseline}
.contact-item dt{color:rgba(30,41,59,.65); font-weight:800; font-size:13px}
.contact-item dd{margin:0; font-weight:750}
.footer-note{margin:12px 0 0; color:rgba(30,41,59,.66); font-weight:600}

.footer-bottom{
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid rgba(15,23,42,.08);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  color:rgba(30,41,59,.70);
  font-weight:650;
  font-size:13px;
}
.link{
  color:rgba(30,41,59,.80);
  text-decoration:none;
  border-bottom:1px solid rgba(37,99,235,.35);
  padding-bottom:1px;
  transition:color .18s ease, border-color .18s ease;
}
.link:hover{color:rgba(30,41,59,.95); border-color:rgba(249,115,22,.55)}
.link:focus-visible{outline:none; box-shadow:0 0 0 3px rgba(37,99,235,.30); border-radius:8px}

@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr}
  .hero-panel{min-height:280px}
  .hero-card{margin:14px}
  .section-head{flex-direction:column; align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
}

@media (max-width: 760px){
  .nav{display:none}
  .topbar-cta{display:none}
  .nav-toggle{display:inline-flex}
  .hero-title{font-size:36px}
  .hero{padding-top:30px}
  .hero-metrics{grid-template-columns:1fr; gap:10px}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .cta-slab{flex-direction:column; align-items:flex-start}
  .contact-item{grid-template-columns:1fr}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .btn,.card,.nav-link,.nav-toggle,.mobile-link,.link{transition:none}
  .btn-primary:hover,.btn-secondary:hover,.card:hover,.nav-toggle:hover{transform:none}
}