*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:hidden}
:root{
  --bg:#0b0c0f;--bg2:#0f1016;--fg:#f0f1f3;
  --muted:#9a9ea8;--dim:#3f434a;
  --border:rgba(255,255,255,.07);
  --px:clamp(16px,5vw,80px);--max:860px;
}
body{background:var(--bg);color:var(--fg);font-family:"Space Grotesk",system-ui,sans-serif;font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}

.nav{position:fixed;top:12px;left:50%;transform:translateX(-50%);width:min(1200px,92%);padding:11px 20px;display:flex;justify-content:space-between;align-items:center;border-radius:16px;backdrop-filter:blur(14px);background:rgba(15,17,22,.72);border:1px solid rgba(255,255,255,.08);z-index:1000;transition:transform .35s cubic-bezier(.4,0,.2,1),opacity .35s ease}
.nav.hidden{transform:translateX(-50%) translateY(calc(-100% - 20px));opacity:0;pointer-events:none}
.nav-brand{display:flex;align-items:center}
.nav-brand img{height:22px;opacity:.9;display:block;transition:.25s}
.nav-brand img:hover{opacity:1}
.nav-back{display:flex;align-items:center;gap:6px;color:var(--muted);text-decoration:none;font-size:13px;transition:.2s}
.nav-back:hover{color:#fff}
.nav-back svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.nav-cta{padding:9px 15px;border-radius:10px;background:#fff;color:#000;font-size:14px;font-weight:600;text-decoration:none;transition:.25s;white-space:nowrap}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(255,255,255,.2)}
@media(max-width:860px){.nav-links{display:none}.nav-burger{display:flex}.nav-cta{display:none}}

.hero{padding:130px var(--px) 56px;max-width:calc(var(--max) + var(--px) * 2);margin:0 auto;position:relative}
.hero::before{content:"";position:absolute;top:100px;left:50%;transform:translateX(-50%);width:min(600px,100%);height:300px;background:radial-gradient(ellipse,rgba(255,255,255,.025) 0%,transparent 70%);pointer-events:none}
.hero-label{display:inline-flex;align-items:center;gap:6px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:6px 12px;border:1px solid var(--border);border-radius:999px;margin-bottom:22px}
.hero-label span{width:5px;height:5px;border-radius:50%;background:var(--muted);flex-shrink:0}
.hero h1{font-family:"Syne",sans-serif;font-size:clamp(26px,6vw,56px);font-weight:700;line-height:1.1;letter-spacing:-.02em;margin-bottom:20px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--muted);padding-top:18px;border-top:1px solid var(--border)}
.hero-meta span{display:flex;align-items:center;gap:5px}
.hero-meta svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
@media(max-width:480px){.hero{padding-top:100px;padding-bottom:36px}.hero-meta{gap:8px}.hero-meta span{font-size:11px}}

.toc-wrap{padding:0 var(--px) 44px;max-width:calc(var(--max) + var(--px) * 2);margin:0 auto}
.toc{background:var(--bg2);border:1px solid var(--border);border-radius:14px;padding:18px 22px}
.toc-title{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin-bottom:12px}
.toc ol{list-style:none;display:flex;flex-direction:column;gap:4px;counter-reset:toc}
.toc li{counter-increment:toc}
.toc a{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--muted);font-size:13px;padding:4px 0;transition:.2s}
.toc a:hover{color:#fff}
.toc a::before{content:counter(toc,decimal-leading-zero);font-size:11px;color:var(--dim);min-width:22px;font-variant-numeric:tabular-nums}
@media(max-width:480px){.toc{padding:14px 16px}.toc a{font-size:13px}}

.content{padding:0 var(--px) 72px;max-width:calc(var(--max) + var(--px) * 2);margin:0 auto}
.section{padding:36px 0;border-top:1px solid var(--border);opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.section:first-child{border-top:none}
.section.visible{opacity:1;transform:none}
.section-num{font-size:11px;letter-spacing:.1em;color:var(--dim);text-transform:uppercase;margin-bottom:7px;font-variant-numeric:tabular-nums}
.section h2{font-family:"Syne",sans-serif;font-size:clamp(17px,3vw,23px);font-weight:600;letter-spacing:-.01em;color:var(--fg);margin-bottom:14px;scroll-margin-top:100px}
.section p{color:var(--muted);margin-bottom:11px;font-size:14px}
.section p:last-child{margin-bottom:0}
@media(max-width:480px){.section{padding:28px 0}.section p{font-size:14px}}

.sub-item{margin-top:14px;padding:14px 16px;background:var(--bg2);border-radius:12px;border:1px solid var(--border)}
.sub-item-num{font-size:11px;color:var(--dim);letter-spacing:.08em;margin-bottom:6px;text-transform:uppercase}
.sub-item p{color:var(--muted);font-size:13px;margin-bottom:0}

.bullet-list{list-style:none;display:flex;flex-direction:column;gap:6px;margin-top:10px}
.bullet-list li{display:flex;gap:10px;align-items:flex-start;color:var(--muted);font-size:13px;line-height:1.6}
.bullet-list li::before{content:"";display:block;width:4px;height:4px;border-radius:50%;background:var(--dim);margin-top:8px;flex-shrink:0}

.highlight{margin-top:18px;padding:16px 18px;border-radius:12px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.03)}
.highlight p{color:var(--muted);font-size:13px;margin:0}

.contact-card{margin-top:20px;padding:20px;background:var(--bg2);border:1px solid var(--border);border-radius:14px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:480px){.contact-card{grid-template-columns:1fr;padding:14px}}
.contact-row{display:flex;flex-direction:column;gap:3px}
.contact-row dt{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.contact-row dd{font-size:13px;color:var(--muted)}
.contact-row a{color:var(--fg);text-decoration:none}
.contact-row a:hover{text-decoration:underline}

.footer{background:linear-gradient(180deg,#07080b,#020304);padding:90px var(--px) 36px;position:relative}
.footer::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:80%;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.12),transparent)}
.footer-inner{max-width:var(--max-w);margin:auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
@media(max-width:820px){.footer-inner{grid-template-columns:1fr 1fr;gap:24px}}
@media(max-width:460px){.footer-inner{grid-template-columns:1fr;gap:24px}.footer{padding:60px var(--px) 28px}}
.footer-brand h3{font-family:"Syne",sans-serif;letter-spacing:.15em;margin:0 0 9px;font-size:17px}
.footer-desc{font-size:13px;line-height:1.65;color:#777;max-width:260px;margin:0}
.footer-col h4{margin:0 0 12px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.42)}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.footer-col li,.footer-col a{font-size:13px;color:#777;text-decoration:none;transition:.22s}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:52px;padding-top:18px;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#484848;border-top:1px solid rgba(255,255,255,.05)}
.footer-bottom a{color:#484848;text-decoration:none;transition:.22s}
.footer-bottom a:hover{color:#fff}
@media(max-width:460px){.footer-bottom{flex-direction:column;gap:5px}}

.fade-in{opacity:0;transform:translateY(20px);animation:fadeUp .6s ease forwards}
@keyframes fadeUp{to{opacity:1;transform:none}}