:root{
  --bg:#070B16; --bg-2:#0B1120; --surface:#111C30; --surface-2:#16263F;
  --line:rgba(255,255,255,.08); --line-strong:rgba(255,255,255,.16);
  --gold:#D4AF37; --gold-soft:#E6C766; --azure:#4FD1C5;
  --text:#EAF0FA; --muted:#9BAAC4; --muted-2:#6E7C96;
  --radius:16px; --radius-sm:10px;
  --maxw:1180px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --shadow:0 18px 50px rgba(0,0,0,.45);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:96px 0;position:relative}
h1,h2,h3,h4{line-height:1.2;font-weight:800;letter-spacing:.5px}
.muted{color:var(--muted)}
.gold{color:var(--gold)}
.center{text-align:center}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:3px;text-transform:uppercase;
  color:var(--gold);border:1px solid var(--line-strong);padding:6px 14px;border-radius:999px;
  background:rgba(212,175,55,.06);margin-bottom:18px}
.section-head{max-width:760px;margin:0 auto 56px;text-align:center}
.section-head h2{font-size:clamp(26px,4vw,40px);margin-bottom:16px}
.section-head p{color:var(--muted);font-size:17px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;
  font-weight:700;font-size:15px;cursor:pointer;border:1px solid transparent;transition:.25s;white-space:nowrap}
.btn-gold{background:linear-gradient(135deg,var(--gold-soft),var(--gold));color:#1a1304;box-shadow:0 10px 30px rgba(212,175,55,.28)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 14px 38px rgba(212,175,55,.4)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:var(--gold)}
.btn-sm{padding:10px 18px;font-size:14px}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:50;transition:.3s;
  background:transparent;border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(7,11,22,.86);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{display:grid;place-items:center;filter:drop-shadow(0 0 8px rgba(212,175,55,.35))}
.brand-text{display:flex;flex-direction:column;line-height:1;font-weight:800;font-size:19px;letter-spacing:1px}
.brand-text em{font-style:normal;font-size:10px;letter-spacing:3px;color:var(--gold);margin-top:3px;font-weight:600}
.nav-links{display:flex;gap:6px;margin-left:auto;margin-right:18px}
.nav-link{padding:9px 15px;border-radius:10px;color:var(--muted);font-size:15px;font-weight:600;transition:.2s}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--gold)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* ---------- hero ---------- */
.hero{padding:160px 0 110px;overflow:hidden;background:
  radial-gradient(900px 500px at 75% -5%,rgba(79,209,197,.16),transparent 60%),
  radial-gradient(800px 520px at 12% 8%,rgba(212,175,55,.18),transparent 60%),
  linear-gradient(180deg,var(--bg-2),var(--bg))}
.hero::before{content:"";position:absolute;inset:0;background-image:
  linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;mask-image:radial-gradient(circle at 50% 30%,#000,transparent 75%);opacity:.6}
.hero .container{position:relative;z-index:2}
.hero h1{font-size:clamp(34px,6vw,62px);margin-bottom:22px;letter-spacing:1px}
.hero h1 .hl{background:linear-gradient(120deg,var(--gold-soft),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:clamp(16px,2.2vw,20px);color:var(--muted);max-width:680px;margin-bottom:34px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:64px;
  border-top:1px solid var(--line);padding-top:34px}
.hero-stats .stat b{display:block;font-size:clamp(28px,4vw,42px);color:var(--gold);font-weight:800}
.hero-stats .stat span{color:var(--muted);font-size:14px}

/* ---------- logos marquee ---------- */
.marquee{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;gap:14px;width:max-content;animation:scroll 38s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.logo-chip{flex:0 0 auto;padding:12px 22px;border:1px solid var(--line);border-radius:12px;
  background:var(--surface);color:var(--muted);font-weight:700;white-space:nowrap;font-size:15px}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ---------- generic blocks ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:linear-gradient(180deg,var(--surface),var(--bg-2));border:1px solid var(--line);
  border-radius:var(--radius);padding:30px;transition:.3s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.card .ico{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;
  background:rgba(212,175,55,.12);color:var(--gold);font-size:22px;font-weight:800}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.card .num{position:absolute;top:18px;right:22px;font-size:46px;font-weight:800;color:rgba(255,255,255,.05)}

.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.feature-row + .feature-row{margin-top:80px}
.feature-copy .eyebrow{margin-bottom:14px}
.feature-copy h2{font-size:clamp(24px,3.4vw,34px);margin-bottom:16px}
.feature-copy p{color:var(--muted);margin-bottom:18px}
.checklist{list-style:none;display:grid;gap:12px}
.checklist li{display:flex;gap:12px;align-items:flex-start;color:var(--text)}
.checklist li::before{content:"✓";color:var(--gold);font-weight:800;flex:0 0 auto;margin-top:1px}
.feature-visual{background:linear-gradient(160deg,var(--surface-2),var(--surface));border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;min-height:300px;position:relative;overflow:hidden}
.feature-visual::after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(79,209,197,.22),transparent 70%);right:-80px;top:-80px}

/* ---------- case ---------- */
.case-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--surface);
  transition:.3s}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-strong)}
.case-body{padding:28px}
.case-tag{font-size:12px;letter-spacing:2px;color:var(--gold);text-transform:uppercase}
.case-body h3{font-size:22px;margin:8px 0 6px}
.case-body p{color:var(--muted);font-size:15px;margin-bottom:20px}
.case-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;border-top:1px solid var(--line);padding-top:18px}
.case-metrics b{display:block;color:var(--gold);font-size:26px;font-weight:800}
.case-metrics span{font-size:12px;color:var(--muted)}

/* ---------- form ---------- */
.contact-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px}
.form-card{background:linear-gradient(180deg,var(--surface),var(--bg-2));border:1px solid var(--line);
  border-radius:var(--radius);padding:34px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;background:var(--bg);border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);padding:13px 15px;color:var(--text);font-size:15px;font-family:inherit;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(212,175,55,.15)}
.field textarea{resize:vertical;min-height:110px}
.form-note{font-size:13px;color:var(--muted-2);margin-top:6px}
.form-success{display:none;background:rgba(79,209,197,.12);border:1px solid rgba(79,209,197,.4);
  color:var(--azure);padding:14px 16px;border-radius:var(--radius-sm);margin-bottom:16px;font-weight:600}
.form-status{display:none;padding:13px 16px;border-radius:var(--radius-sm);margin-bottom:16px;font-size:14px;line-height:1.5;font-weight:600}
.form-status.success{background:rgba(79,209,197,.12);border:1px solid rgba(79,209,197,.4);color:var(--azure)}
.form-status.error{background:rgba(255,107,107,.1);border:1px solid rgba(255,107,107,.4);color:#ff8a8a}
.btn[disabled]{opacity:.62;cursor:not-allowed;transform:none!important;box-shadow:none!important}
.aside-card{background:linear-gradient(160deg,var(--surface-2),var(--surface));border:1px solid var(--line);
  border-radius:var(--radius);padding:30px}
.aside-card h4{margin-bottom:14px;font-size:18px}
.aside-card .line{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:15px}
.aside-card .line:last-child{border-bottom:0}
.aside-card .line b{color:var(--text);font-weight:700}

/* ---------- dashboard mock ---------- */
.dash{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:18px}
.dash .kpi{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:16px}
.dash .kpi b{display:block;font-size:24px;color:var(--gold);font-weight:800}
.dash .kpi span{font-size:12px;color:var(--muted)}
.dash .kpi small{color:var(--azure);font-weight:700}
.bars{display:flex;align-items:flex-end;gap:10px;height:140px;padding:14px;background:var(--bg);border:1px solid var(--line);border-radius:12px}
.bars .bar{flex:1;background:linear-gradient(180deg,var(--gold-soft),var(--gold));border-radius:6px 6px 0 0;position:relative}
.bars .bar.alt{background:linear-gradient(180deg,#6fe3d8,var(--azure))}
.bars .bar::after{content:attr(data-m);position:absolute;top:-20px;left:0;right:0;text-align:center;font-size:11px;color:var(--muted)}

/* ---------- CTA band ---------- */
.cta-band{background:radial-gradient(700px 300px at 80% 0,rgba(212,175,55,.2),transparent 60%),
  linear-gradient(135deg,var(--surface-2),var(--surface));border:1px solid var(--line-strong);
  border-radius:24px;padding:56px;text-align:center;position:relative;overflow:hidden}
.cta-band h2{font-size:clamp(24px,3.6vw,36px);margin-bottom:14px}
.cta-band p{color:var(--muted);max-width:560px;margin:0 auto 26px}

/* ---------- breadcrumb / page hero ---------- */
.page-hero{padding:150px 0 60px;background:
  radial-gradient(700px 360px at 80% -10%,rgba(212,175,55,.16),transparent 60%),
  linear-gradient(180deg,var(--bg-2),var(--bg))}
.page-hero h1{font-size:clamp(30px,5vw,50px);margin-bottom:14px}
.page-hero p{color:var(--muted);max-width:680px;font-size:18px}
.crumb{font-size:13px;color:var(--muted-2);margin-bottom:18px}
.crumb a:hover{color:var(--gold)}

/* ---------- timeline / steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;position:relative}
.step .n{counter-increment:s;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  background:rgba(212,175,55,.14);color:var(--gold);font-weight:800;margin-bottom:14px}
.step .n::before{content:counter(s)}
.step h4{font-size:17px;margin-bottom:6px}
.step p{color:var(--muted);font-size:14px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media(max-width:900px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .feature-row,.contact-wrap{grid-template-columns:1fr;gap:30px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:24px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .nav-links{position:fixed;inset:72px 0 auto 0;flex-direction:column;background:rgba(7,11,22,.97);
    backdrop-filter:blur(14px);padding:18px 24px;gap:4px;border-bottom:1px solid var(--line);
    transform:translateY(-130%);transition:.35s;margin:0}
  .nav-links.open{transform:none}
  .nav-links .nav-link{padding:13px 12px}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  section{padding:70px 0}
}
@media(max-width:560px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .hero{padding:130px 0 80px}
  .cta-band{padding:38px 22px}
  .dash{grid-template-columns:1fr}
}