*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a0a;
  --bg-2:#111113;
  --card:#0f0f10;
  --fg:#fafafa;
  --fg-2:#a1a1aa;
  --fg-3:#71717a;
  --border:#27272a;
  --accent:#e4e4e7;
  --accent-2:#a1a1aa;
  --max:1100px;
  --r:14px;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Space Grotesk',system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.7;color:var(--fg-2);background:var(--bg);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4{font-family:'Archivo',"Space Grotesk",system-ui,sans-serif;color:var(--fg);line-height:1.2;font-weight:600}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 24px}

/* Nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(10,10,10,.8);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid rgba(39,39,42,.6)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:'Archivo',sans-serif;font-weight:600;font-size:16px;color:var(--fg)}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--fg);animation:pulse 3s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.nav-links{display:flex;gap:28px;font-size:14px;color:var(--fg-2)}
.nav-links a:hover{color:var(--fg)}
.menu-btn{display:none;background:none;border:1px solid var(--border);border-radius:8px;cursor:pointer;padding:8px 12px;color:var(--fg)}

/* Hero */
.hero{padding:120px 0 96px;position:relative}
.hero::before{content:"";position:absolute;top:-120px;right:-160px;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.07) 0%,transparent 65%);pointer-events:none}
.hero .kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);margin-bottom:28px}
.hero .kicker::before{content:"";width:28px;height:1px;background:var(--fg-3)}
.hero h1{font-size:clamp(40px,7vw,76px);letter-spacing:-.03em;line-height:1.05;margin-bottom:28px}
.hero h1 .thin{font-weight:300;color:var(--fg-2)}
.hero p{font-size:clamp(16px,2vw,19px);color:var(--fg-3);max-width:540px;line-height:1.8;margin-bottom:40px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 30px;border-radius:10px;font-size:15px;font-weight:500;cursor:pointer;border:1px solid transparent;transition:all .25s;font-family:inherit}
.btn-solid{background:var(--fg);color:#0a0a0a}
.btn-solid:hover{background:#d4d4d8;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--fg);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--fg-2);transform:translateY(-2px)}

/* Section */
.section{padding:96px 0}
.section-head{max-width:620px;margin-bottom:56px}
.section-label{font-family:'Archivo',sans-serif;font-size:12px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--fg-3);margin-bottom:16px;display:block}
.section-head h2{font-size:clamp(28px,4vw,44px);letter-spacing:-.02em;margin-bottom:16px}
.section-head p{color:var(--fg-3);font-size:16px;line-height:1.8}

/* Services */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.service-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:36px 30px;transition:all .3s;position:relative;overflow:hidden}
.service-card::after{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--fg-2),transparent);opacity:0;transition:opacity .3s}
.service-card:hover{border-color:#3f3f46;transform:translateY(-4px)}
.service-card:hover::after{opacity:1}
.service-num{font-family:'Archivo',sans-serif;font-size:12px;letter-spacing:.12em;color:var(--fg-3);margin-bottom:20px}
.service-card h3{font-size:19px;margin-bottom:12px}
.service-card p{font-size:14.5px;color:var(--fg-3);line-height:1.8}

/* About */
.about{background:var(--bg-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.about-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:start}
.about-lead{font-size:clamp(18px,2.4vw,24px);line-height:1.7;color:var(--fg)}
.about-lead em{font-style:normal;color:var(--fg-2)}
.about-list{margin-top:32px;display:grid;gap:14px}
.about-item{display:flex;gap:14px;align-items:baseline;font-size:15px;color:var(--fg-3)}
.about-item .tag{font-family:'Archivo',sans-serif;font-size:12px;letter-spacing:.08em;color:var(--fg-2);min-width:88px;text-transform:uppercase}

/* Stats */
.stats{padding:72px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item b{display:block;font-family:'Archivo',sans-serif;font-size:clamp(30px,3.6vw,44px);font-weight:600;line-height:1;margin-bottom:10px;color:var(--fg)}
.stat-item span{font-size:13.5px;color:var(--fg-3)}

/* Scope */
.scope{background:var(--bg-2);border-top:1px solid var(--border)}
.scope-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.scope-item{display:flex;gap:14px;align-items:center;padding:16px 20px;background:var(--card);border:1px solid var(--border);border-radius:10px;font-size:14.5px;color:var(--fg-2)}
.scope-item .s-dot{width:6px;height:6px;border-radius:50%;background:var(--fg-2);flex-shrink:0}

/* CTA */
.cta{padding:110px 0;text-align:center}
.cta h2{font-size:clamp(30px,4.4vw,52px);letter-spacing:-.02em;margin-bottom:20px;max-width:640px;margin-left:auto;margin-right:auto}
.cta p{font-size:16px;color:var(--fg-3);margin-bottom:36px}

/* Footer */
footer{border-top:1px solid var(--border);padding:32px 0;text-align:center;font-size:13px;color:var(--fg-3)}

/* Responsive */
@media (max-width:900px){
  .services-grid{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .scope-grid{grid-template-columns:1fr}
  .hero{padding:80px 0 64px}
}
@media (max-width:640px){
  .nav-links{display:none}
  .section{padding:64px 0}
  .stats-grid{grid-template-columns:1fr 1fr;gap:32px 16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}