:root{
  --navy-900:#0A1730;
  --navy-800:#0B1F3A;
  --navy-700:#102A4C;
  --navy-600:#16365f;
  --ink:#0E1B33;
  --gold:#C9A24B;
  --gold-soft:#E4C77E;
  --red:#C0392B;
  --paper:#F6F8FB;
  --line:rgba(201,162,75,.22);
  --muted:#8A97AE;
  --text:#1C2A44;
  --card:rgba(255,255,255,.04);
  --radius:18px;
  --shadow:0 24px 60px rgba(5,15,35,.35);
  --maxw:1180px;
  font-synthesis:none;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  color:var(--text);background:var(--navy-900);
  line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{position:relative}

/* ===== NAV ===== */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(10,23,48,.78);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;color:#fff;letter-spacing:.5px}
.brand img{height:34px;width:34px;border-radius:9px;background:#fff;padding:3px}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--gold-soft);letter-spacing:2px}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{color:#cdd6e6;font-size:15px;font-weight:500;transition:.2s;position:relative}
.nav-links a:hover{color:#fff}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--gold);transition:.25s}
.nav-links a:hover::after{width:100%}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.lang button{background:transparent;border:0;color:#aeb9cc;padding:7px 14px;font-size:13px;cursor:pointer;font-weight:600;transition:.2s}
.lang button.active{background:var(--gold);color:#1a1306}
.nav-cta{background:var(--gold);color:#1a1306;padding:10px 20px;border-radius:999px;font-weight:700;font-size:14px;transition:.2s;box-shadow:0 8px 22px rgba(201,162,75,.3)}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(201,162,75,.45)}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer}
.burger span{width:24px;height:2px;background:#fff;border-radius:2px}

/* ===== HERO ===== */
.hero{
  background:
    radial-gradient(1100px 500px at 80% -10%,rgba(201,162,75,.18),transparent 60%),
    radial-gradient(900px 600px at 0% 20%,rgba(22,54,95,.6),transparent 55%),
    linear-gradient(180deg,var(--navy-800),var(--navy-900));
  padding:96px 0 84px;overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--gold-soft);font-size:13px;font-weight:700;letter-spacing:3px;text-transform:uppercase;border:1px solid var(--line);padding:7px 14px;border-radius:999px;margin-bottom:22px}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 12px var(--gold)}
.hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.18;color:#fff;font-weight:800;letter-spacing:.5px}
.hero h1 .hl{color:var(--gold-soft)}
.hero p.lead{color:#c2cce0;font-size:18px;margin:22px 0 30px;max-width:560px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:9px;padding:14px 26px;border-radius:999px;font-weight:700;font-size:15px;cursor:pointer;transition:.2s;border:1px solid transparent}
.btn-gold{background:var(--gold);color:#1a1306;box-shadow:0 10px 26px rgba(201,162,75,.32)}
.btn-gold:hover{transform:translateY(-2px)}
.btn-ghost{border-color:var(--line);color:#dde4f1}
.btn-ghost:hover{background:rgba(255,255,255,.06);color:#fff}
.trust{display:flex;gap:34px;margin-top:44px;flex-wrap:wrap}
.trust div{color:#fff}
.trust b{display:block;font-size:30px;font-weight:800;color:var(--gold-soft);line-height:1}
.trust span{font-size:13px;color:#9fb0cc;letter-spacing:1px}
.hero-card{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:var(--shadow);
  backdrop-filter:blur(8px);
}
.hero-card h3{color:#fff;font-size:18px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.hero-card h3 svg{width:20px;height:20px;fill:var(--gold)}
.layer{display:flex;gap:14px;padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.08)}
.layer:last-child{border-bottom:0}
.layer .ix{flex:0 0 38px;height:38px;border-radius:10px;background:rgba(201,162,75,.14);color:var(--gold-soft);display:grid;place-items:center;font-weight:800;font-size:15px}
.layer .tx b{color:#fff;font-size:15px;display:block}
.layer .tx span{color:#9fb0cc;font-size:13px}

/* ===== SECTION SHELL ===== */
.band{padding:84px 0}
.band.alt{background:linear-gradient(180deg,var(--navy-900),#0c1d3a)}
.band.paper{background:var(--paper);color:var(--text)}
.kicker{color:var(--gold);font-weight:700;letter-spacing:3px;font-size:13px;text-transform:uppercase;text-align:center;display:block;margin-bottom:12px}
.h2{font-size:clamp(26px,3.2vw,38px);font-weight:800;color:#fff;text-align:center;letter-spacing:.5px}
.band.paper .h2{color:var(--ink)}
.sub2{text-align:center;color:#a9b6cf;max-width:640px;margin:14px auto 0;font-size:16px}
.band.paper .sub2{color:#5d6b85}

/* ===== ABOUT ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center;margin-top:46px}
.about p{color:#c2cce0;font-size:16px;margin-bottom:16px}
.about .stat-row{display:flex;gap:26px;margin-top:24px;flex-wrap:wrap}
.about .stat-row b{color:var(--gold-soft);font-size:26px;display:block}
.about .stat-row span{color:#9fb0cc;font-size:13px}
.team{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.member{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:16px;padding:22px;transition:.25s}
.member:hover{transform:translateY(-4px);border-color:var(--gold)}
.member .av{width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,var(--navy-600),var(--gold));display:grid;place-items:center;color:#fff;font-weight:800;font-size:20px;margin-bottom:14px}
.member b{color:#fff;font-size:16px;display:block}
.member span{color:var(--gold-soft);font-size:13px}
.member p{color:#9fb0cc;font-size:13px;margin-top:8px}
.ent-card{background:linear-gradient(160deg,rgba(201,162,75,.1),rgba(255,255,255,.03));border:1px solid var(--line);border-radius:16px;padding:20px;margin-top:18px}
.ent-card b{color:#fff;display:block;margin-bottom:6px}
.ent-card span{color:#9fb0cc;font-size:13px}

/* ===== SERVICES ===== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:50px}
.svc{background:linear-gradient(165deg,rgba(255,255,255,.05),rgba(255,255,255,.015));border:1px solid var(--line);border-radius:18px;padding:28px;transition:.25s;position:relative;overflow:hidden}
.svc::before{content:"";position:absolute;inset:0;background:radial-gradient(400px 200px at 100% 0,rgba(201,162,75,.12),transparent);opacity:0;transition:.3s}
.svc:hover{transform:translateY(-6px);border-color:var(--gold)}
.svc:hover::before{opacity:1}
.svc .ic{width:48px;height:48px;border-radius:13px;background:rgba(201,162,75,.15);display:grid;place-items:center;margin-bottom:16px}
.svc .ic svg{width:24px;height:24px;fill:var(--gold)}
.svc h3{color:#fff;font-size:19px;margin-bottom:10px}
.svc p{color:#aeb9cc;font-size:14px}

/* ===== METHODOLOGY ===== */
.method{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:50px}
.m{background:rgba(255,255,255,.04);border:1px solid var(--line);border-top:3px solid var(--gold);border-radius:16px;padding:24px;transition:.25s}
.m:hover{transform:translateY(-5px);background:rgba(255,255,255,.07)}
.m .lv{color:var(--gold-soft);font-weight:800;font-size:13px;letter-spacing:2px}
.m h3{color:#fff;font-size:18px;margin:8px 0 10px}
.m p{color:#aeb9cc;font-size:14px}
.method-note{margin-top:30px;text-align:center;color:#aeb9cc;font-size:15px;background:rgba(192,57,43,.1);border:1px solid rgba(192,57,43,.3);border-radius:14px;padding:16px 22px;max-width:760px;margin-left:auto;margin-right:auto}
.method-note b{color:var(--gold-soft)}

/* ===== CASES ===== */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:50px}
.case{background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));border:1px solid var(--line);border-radius:18px;padding:30px;position:relative;overflow:hidden}
.case .big{font-size:38px;font-weight:800;color:var(--gold-soft);line-height:1}
.case h3{color:#fff;font-size:18px;margin:14px 0 8px}
.case p{color:#aeb9cc;font-size:14px}
.case .tag{position:absolute;top:22px;right:22px;font-size:11px;color:var(--gold-soft);border:1px solid var(--line);padding:4px 10px;border-radius:999px}

/* ===== CONTACT ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;margin-top:46px;align-items:start}
.qr-row{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.qr{background:#fff;border-radius:18px;padding:20px;text-align:center;box-shadow:var(--shadow)}
.qr img{width:150px;height:150px;margin:0 auto 12px;border-radius:10px}
.qr b{color:var(--ink);font-size:16px;display:block}
.qr span{color:#5d6b85;font-size:13px}
.contact-info{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:18px;padding:30px}
.contact-info h3{color:#fff;font-size:20px;margin-bottom:18px}
.contact-info .row{display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.1);color:#c2cce0;font-size:15px}
.contact-info .row b{color:var(--gold-soft);min-width:64px}
.contact-info .row:last-child{border-bottom:0}
.note-gold{margin-top:18px;background:rgba(201,162,75,.1);border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:var(--gold-soft);font-size:13px}

/* ===== FOOTER ===== */
.foot{background:#070f22;color:#8a97ae;padding:46px 0 28px;border-top:1px solid var(--line)}
.foot .wrap{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.foot b{color:#fff}
.foot .col span{display:block;font-size:13px;margin:4px 0}
.foot .copy{text-align:center;margin-top:30px;font-size:13px;color:#5d6b85;border-top:1px solid rgba(255,255,255,.06);padding-top:20px}

/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(26px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ===== responsive ===== */
@media(max-width:980px){
  .hero-grid,.about-grid,.contact-grid{grid-template-columns:1fr}
  .cards,.team,.method,.case-grid{grid-template-columns:1fr 1fr}
  .nav-links{position:fixed;inset:72px 0 auto 0;background:var(--navy-800);flex-direction:column;padding:24px;gap:18px;transform:translateY(-130%);transition:.3s;border-bottom:1px solid var(--line)}
  .nav-links.open{transform:none}
  .burger{display:flex}
}
@media(max-width:768px){
  .hero h1{font-size:32px}
  .hero p.lead{font-size:16px}
  .trust b{font-size:24px}
  .qr-row{grid-template-columns:1fr;max-width:320px;margin:0 auto}
  .qr{padding:24px}
  .qr img{width:220px;height:220px}
  .contact-grid{gap:30px}
  .contact-info{padding:22px}
  .nav .wrap{height:64px}
  .nav-links{inset:64px 0 auto 0}
}
@media(max-width:560px){
  .cards,.team,.method,.case-grid,.qr-row{grid-template-columns:1fr}
  .trust{gap:20px}
  .hero{padding:64px 0 56px}
  .wrap{padding:0 18px}
  .band{padding:64px 0}
}