:root {
  --navy:#001842; --navy-d:#000e2a; --teal:#12c1bb;
  --teal-a:rgba(18,193,187,.1); --teal-b:rgba(18,193,187,.2);
  --white:#fff; --off:#f5f7fb; --ink:#001842; --muted:#5c6f8a;
  --border:#e2e6ef; --border-s:#edf0f7;
  --f-d:'Plus Jakarta Sans',sans-serif;
  --f-b:'Inter',sans-serif;
  --f-m:'DM Mono',monospace;
  --max:760px; --pad:clamp(24px,5vw,48px);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-font-smoothing:antialiased}
body{font-family:var(--f-b);background:var(--white);color:var(--ink);line-height:1.75}
a{text-decoration:none;color:inherit}

/* NAV */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.96);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-s);
  padding:0 var(--pad);height:60px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-logo img{height:26px;width:auto}
.nav-back{
  font-family:var(--f-b);font-size:12px;font-weight:500;color:var(--muted);
  display:flex;align-items:center;gap:6px;
  transition:color .18s;
}
.nav-back:hover{color:var(--ink)}
.nav-back svg{flex-shrink:0}

/* HERO BANNER */
.doc-hero{
  background:var(--navy-d);
  padding:56px var(--pad) 48px;
  border-bottom:1px solid rgba(18,193,187,.1);
  position:relative;overflow:hidden;
}
.doc-hero::before{
  content:'';position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(18,193,187,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(18,193,187,.025) 1px,transparent 1px);
  background-size:44px 44px;pointer-events:none;
}
.doc-hero-inner{max-width:var(--max);margin:0 auto;position:relative;z-index:1}
.doc-eyebrow{
  font-family:var(--f-m);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(18,193,187,.7);margin-bottom:12px;
  display:flex;align-items:center;gap:8px;
}
.doc-eyebrow::before{content:'';display:block;width:16px;height:1px;background:rgba(18,193,187,.5)}
.doc-title{
  font-family:var(--f-d);font-weight:800;
  font-size:clamp(26px,3.5vw,38px);
  line-height:1.08;letter-spacing:-.03em;color:var(--white);margin-bottom:14px;
}
.doc-meta{
  font-family:var(--f-m);font-size:9px;letter-spacing:.08em;
  color:rgba(255,255,255,.3);display:flex;gap:20px;flex-wrap:wrap;
}

/* CONTENT */
.doc-body{max-width:var(--max);margin:0 auto;padding:56px var(--pad) 80px}

/* TOC */
.toc{
  background:var(--off);border:1px solid var(--border);
  border-radius:10px;padding:24px 28px;margin-bottom:52px;
}
.toc-title{
  font-family:var(--f-d);font-size:12px;font-weight:700;
  color:var(--navy);letter-spacing:.04em;text-transform:uppercase;
  margin-bottom:14px;
}
.toc ol{counter-reset:toc-c;list-style:none;display:flex;flex-direction:column;gap:6px}
.toc li{counter-increment:toc-c;display:flex;align-items:baseline;gap:8px}
.toc li::before{
  content:counter(toc-c,decimal-leading-zero)".";
  font-family:var(--f-m);font-size:9.5px;color:var(--teal);flex-shrink:0;
}
.toc a{
  font-family:var(--f-b);font-size:13px;color:var(--muted);
  transition:color .15s;
}
.toc a:hover{color:var(--teal)}

/* SECTIONS */
.doc-section{margin-bottom:48px;padding-bottom:48px;border-bottom:1px solid var(--border-s)}
.doc-section:last-child{border-bottom:none}
.sec-num{
  font-family:var(--f-m);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--teal);margin-bottom:8px;display:block;
}
.sec-title{
  font-family:var(--f-d);font-size:19px;font-weight:800;
  color:var(--navy);letter-spacing:-.02em;margin-bottom:18px;line-height:1.2;
}
.doc-section p{
  font-family:var(--f-b);font-size:14.5px;color:#3a4f6b;line-height:1.8;margin-bottom:14px;
}
.doc-section p:last-child{margin-bottom:0}
.doc-section ul,.doc-section ol{
  margin:12px 0 16px 0;display:flex;flex-direction:column;gap:8px;
}
.doc-section li{
  font-family:var(--f-b);font-size:14px;color:#3a4f6b;line-height:1.7;
  padding-left:18px;position:relative;
}
.doc-section ul li::before{
  content:'';position:absolute;left:0;top:9px;
  width:5px;height:5px;border-radius:50%;background:var(--teal);
}
.doc-section ol{counter-reset:ol-c;list-style:none}
.doc-section ol li{counter-increment:ol-c}
.doc-section ol li::before{
  content:counter(ol-c)".";position:absolute;left:0;
  font-family:var(--f-m);font-size:10px;color:var(--teal);top:3px;
}

/* HIGHLIGHT BOX */
.hbox{
  background:var(--teal-a);border:1px solid var(--teal-b);
  border-radius:8px;padding:16px 20px;margin:18px 0;
}
.hbox p{font-size:13.5px !important;color:var(--navy) !important}

/* WARN BOX */
.wbox{
  background:rgba(0,24,66,.04);border:1px solid rgba(0,24,66,.1);
  border-left:3px solid var(--teal);
  border-radius:0 8px 8px 0;padding:14px 18px;margin:18px 0;
}
.wbox p{font-size:13px !important;color:var(--muted) !important}

/* CONTACT BLOCK */
.contact-block{
  background:var(--navy-d);border-radius:10px;padding:28px 32px;margin-top:48px;
}
.contact-block p{color:rgba(255,255,255,.55) !important;font-size:13px !important}
.contact-block strong{color:var(--teal)}
.contact-block a{color:rgba(255,255,255,.7);border-bottom:1px solid rgba(18,193,187,.3)}
.contact-block a:hover{color:var(--teal)}

/* FOOTER */
.doc-footer{
  background:var(--navy-d);border-top:1px solid rgba(18,193,187,.08);
  padding:28px var(--pad);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.doc-footer img{height:22px;width:auto;opacity:.6}
.doc-footer-text{font-family:var(--f-m);font-size:9px;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.25)}

@media(max-width:600px){
  .doc-meta{flex-direction:column;gap:6px}
  .doc-body{padding:40px var(--pad) 60px}
}