/* ==========================================================================
   Mars Software — stylesheet
   Design tokens
   ========================================================================== */
:root{
  --ink:        #10151c;   /* deep graphite-navy — hero / nav / footer */
  --ink-2:      #1b2330;   /* panel on ink */
  --ink-line:   #2a3340;   /* hairline on ink */
  --paper:      #f6f5f1;   /* warm light body background */
  --panel:      #ffffff;   /* card surface on paper */
  --line:       #e2ddd2;   /* hairline on paper */
  --text:       #1c232c;   /* body text */
  --muted:      #5b6470;   /* secondary text */
  --muted-2:    #9aa3ad;   /* tertiary text (on ink) */
  --steel:      #3e6e8e;   /* primary accent */
  --steel-dark: #2c5470;
  --amber:      #d68a3c;   /* secondary accent / status */
  --ok:         #4c8c6b;   /* status-good indicator */
  --radius:     3px;
  --wrap:       1120px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"IBM Plex Sans", Arial, sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:"Space Grotesk", "IBM Plex Sans", Arial, sans-serif;
  font-weight:600;
  line-height:1.15;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
}
p{ margin:0 0 1.1em; }
a{ color:inherit; }
img{ max-width:100%; display:block; }
.mono{ font-family:"IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace; }

.wrap{
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 28px;
}

/* Skip link for keyboard users */
.skip-link{
  position:absolute; left:-999px; top:auto;
  background:var(--ink); color:#fff; padding:10px 16px;
  z-index:1000; border-radius:var(--radius);
}
.skip-link:focus{ left:20px; top:20px; }

/* ------------------------- visually-hidden util ------------------------- */
.vh{
  position:absolute !important; width:1px; height:1px;
  overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap;
}

/* --------------------------------- Nav ---------------------------------- */
.site-header{
  background:var(--ink);
  border-bottom:1px solid var(--ink-line);
  position:sticky; top:0; z-index:100;
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  height:72px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  text-decoration:none; color:#fff;
}
.brand-mark{ flex:none; }
.brand-word{
  font-family:"Space Grotesk", sans-serif;
  font-weight:600; font-size:18px; letter-spacing:.01em;
  color:#fff;
}
.brand-est{
  font-family:"IBM Plex Mono", monospace;
  font-size:10px; color:var(--muted-2); letter-spacing:.08em;
  display:block; margin-top:1px;
}
.nav-links{
  list-style:none; display:flex; gap:2px; margin:0; padding:0;
}
.nav-links a{
  display:inline-block; text-decoration:none; color:#cfd6de;
  font-size:14.5px; font-weight:500; padding:10px 16px; border-radius:var(--radius);
  transition:color .15s ease, background .15s ease;
}
.nav-links a:hover, .nav-links a:focus-visible{ color:#fff; background:rgba(255,255,255,.06); }
.nav-links a.current{ color:#fff; }
.nav-links a.current::after{ content:""; }
.nav-cta{
  border:1px solid rgba(255,255,255,.22) !important;
}

.nav-toggle{
  display:none;
  background:none; border:0; color:#fff; padding:8px; cursor:pointer;
}
.nav-toggle svg{ width:22px; height:22px; display:block; }

@media (max-width: 760px){
  .nav-links{
    position:absolute; top:72px; left:0; right:0;
    background:var(--ink); border-bottom:1px solid var(--ink-line);
    flex-direction:column; padding:8px 20px 18px;
    display:none;
  }
  .nav-links.open{ display:flex; }
  .nav-links a{ padding:12px 6px; }
  .nav-toggle{ display:inline-flex; }
}

/* --------------------------------- Hero ---------------------------------- */
.hero{
  background:
    radial-gradient(900px 420px at 82% -10%, rgba(62,110,142,.35), transparent 60%),
    var(--ink);
  color:#fff;
  padding:72px 0 0;
}
.hero-eyebrow{
  font-family:"IBM Plex Mono", monospace;
  font-size:12px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--amber); margin-bottom:18px;
}
.hero h1{
  font-size:clamp(32px, 5vw, 54px);
  color:#fff; max-width:16ch;
}
.hero-sub{
  color:#c7ced6; font-size:18px; max-width:52ch; margin-top:18px;
}
.hero-actions{
  display:flex; gap:14px; flex-wrap:wrap; margin-top:30px;
}
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-size:14.5px; font-weight:600; text-decoration:none;
  padding:13px 22px; border-radius:var(--radius);
  border:1px solid transparent; transition:transform .12s ease, opacity .12s ease;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:var(--amber); color:#191008; }
.btn-primary:hover{ opacity:.92; }
.btn-ghost{ border-color:rgba(255,255,255,.28); color:#fff; }
.btn-ghost:hover{ background:rgba(255,255,255,.08); }
.btn-steel{ background:var(--steel); color:#fff; }
.btn-steel:hover{ opacity:.92; }

/* ----------------------- Signature: status ledger ------------------------ */
.ledger{
  margin-top:52px;
  border-top:1px solid var(--ink-line);
  background:var(--ink-2);
}
.ledger-row{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
}
.ledger-item{
  padding:20px 24px;
  border-right:1px solid var(--ink-line);
  border-bottom:1px solid var(--ink-line);
}
.ledger-item:last-child{ border-right:none; }
.ledger-label{
  font-family:"IBM Plex Mono", monospace;
  font-size:10.5px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--muted-2); display:flex; align-items:center; gap:7px; margin-bottom:8px;
}
.dot{
  width:6px; height:6px; border-radius:50%; background:var(--ok); flex:none;
  box-shadow:0 0 0 3px rgba(76,140,107,.18);
}
.ledger-value{
  font-family:"Space Grotesk", sans-serif;
  font-size:21px; color:#fff; font-weight:600;
}
@media (max-width:760px){
  .ledger-row{ grid-template-columns:repeat(2, 1fr); }
  .ledger-item:nth-child(2){ border-right:none; }
}

/* -------------------------------- Sections -------------------------------- */
section{ padding:76px 0; }
.section-head{ max-width:640px; margin-bottom:44px; }
.section-eyebrow{
  font-family:"IBM Plex Mono", monospace; font-size:12px;
  letter-spacing:.12em; text-transform:uppercase; color:var(--steel-dark);
  margin-bottom:12px;
}
.section-head h2{ font-size:clamp(26px,3.4vw,36px); color:var(--text); }
.section-head p{ color:var(--muted); font-size:17px; margin-top:14px; }

.alt{ background:var(--panel); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }

/* --------------------------------- Grid ----------------------------------- */
.grid{ display:grid; gap:20px; }
.grid-3{ grid-template-columns:repeat(3, 1fr); }
.grid-2{ grid-template-columns:repeat(2, 1fr); }
@media (max-width:900px){
  .grid-3{ grid-template-columns:repeat(2, 1fr); }
}
@media (max-width:640px){
  .grid-3, .grid-2{ grid-template-columns:1fr; }
}

.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px 26px;
}
.card-icon{
  width:38px; height:38px; margin-bottom:18px;
  color:var(--steel);
}
.card h3{ font-size:19px; margin-bottom:10px; }
.card p{ color:var(--muted); font-size:15px; margin-bottom:0; }

/* ------------------------------- Service page ------------------------------ */
.service-block{
  display:grid; grid-template-columns:280px 1fr; gap:40px;
  padding:38px 0; border-bottom:1px solid var(--line);
}
.service-block:last-child{ border-bottom:none; }
.service-block .index{
  font-family:"IBM Plex Mono", monospace; font-size:12px; color:var(--steel-dark);
  letter-spacing:.1em; text-transform:uppercase; margin-bottom:10px;
}
.service-block h3{ font-size:23px; }
.service-block .body p{ color:var(--muted); }
.service-block .body ul{ margin:14px 0 0; padding-left:18px; color:var(--muted); }
.service-block .body li{ margin-bottom:6px; }
@media (max-width:800px){
  .service-block{ grid-template-columns:1fr; gap:12px; }
}

/* --------------------------------- About ---------------------------------- */
.about-copy p{ color:var(--text); font-size:17px; max-width:70ch; }
.advisory-list{ display:grid; gap:18px; margin-top:10px; }
.advisory-item{
  border:1px solid var(--line); background:var(--panel);
  border-radius:var(--radius); padding:22px 24px;
}
.advisory-item a{
  font-family:"Space Grotesk", sans-serif; font-weight:600; font-size:17px;
  color:var(--steel-dark); text-decoration:none; border-bottom:1px solid rgba(62,110,142,.35);
}
.advisory-item a:hover{ border-bottom-color:var(--steel-dark); }
.advisory-item p{ margin:8px 0 0; color:var(--muted); font-size:15px; }

/* -------------------------------- Contact ---------------------------------- */
.office-card{
  border:1px solid var(--line); background:var(--panel); border-radius:var(--radius);
  padding:30px 28px;
}
.office-card .tag{
  font-family:"IBM Plex Mono", monospace; font-size:11px; letter-spacing:.12em;
  text-transform:uppercase; color:var(--amber); margin-bottom:14px; display:inline-block;
}
.office-card h3{ font-size:21px; margin-bottom:14px; }
.office-card address{ font-style:normal; color:var(--muted); line-height:1.75; }
.office-card address a{ color:var(--steel-dark); text-decoration:none; }
.office-card address a:hover{ text-decoration:underline; }

/* --------------------------------- CTA band -------------------------------- */
.cta-band{
  background:var(--ink); color:#fff; text-align:left;
}
.cta-band .wrap{
  display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap;
}
.cta-band h2{ color:#fff; font-size:clamp(22px,3vw,30px); max-width:20ch; margin:0; }
.cta-band p{ color:var(--muted-2); margin:8px 0 0; }

/* --------------------------------- Footer ---------------------------------- */
.site-footer{ background:var(--ink); color:var(--muted-2); border-top:1px solid var(--ink-line); }
.footer-top{
  padding:52px 0 28px;
  display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:32px;
}
.footer-brand .brand-word{ font-size:17px; }
.footer-brand p{ color:var(--muted-2); font-size:14.5px; margin-top:14px; max-width:34ch; }
.footer-col h4{
  font-family:"IBM Plex Mono", monospace; font-size:11px; letter-spacing:.1em;
  text-transform:uppercase; color:#fff; margin-bottom:14px;
}
.footer-col ul{ list-style:none; margin:0; padding:0; }
.footer-col li{ margin-bottom:9px; }
.footer-col a{ color:var(--muted-2); text-decoration:none; font-size:14.5px; }
.footer-col a:hover{ color:#fff; }
.footer-bottom{
  border-top:1px solid var(--ink-line);
  padding:20px 0; font-size:13px; color:#6b7480;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
}
@media (max-width:760px){
  .footer-top{ grid-template-columns:1fr 1fr; }
  .footer-brand{ grid-column:1 / -1; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .btn{ transition:none; }
}

/* Focus visibility */
a:focus-visible, button:focus-visible{
  outline:2px solid var(--steel); outline-offset:2px;
}