/* Mashiyu Technologies — infrastructure company, not a crypto project.
   Light, editorial, restrained. Serif display signals permanence; the
   whole point of the product is that things last. */

:root{
  --bg:#FBFAF8;
  --panel:#F4F2ED;
  --ink:#14161A;
  --muted:#5C6169;
  --accent:#22406B;        /* kon indigo — used sparingly, never decoratively */
  --rule:#E4E0D8;

  --display:"Source Serif 4",Georgia,serif;
  --body:"Inter",system-ui,-apple-system,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --wrap:1080px;
  --gut:clamp(20px,5vw,44px);
  --sec:clamp(72px,10vw,132px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--body);
  font-size:clamp(15.5px,.35vw + 14.6px,17px);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-underline-offset:3px}
a:hover{color:var(--ink)}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

.skip{position:absolute;left:-9999px;background:var(--ink);color:var(--bg);padding:10px 16px;z-index:99}
.skip:focus{left:8px;top:8px}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}

/* ---------- header ---------- */
.site-header{border-bottom:1px solid var(--rule);background:var(--bg);position:sticky;top:0;z-index:20}
.site-header__in{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:70px}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:var(--ink)}
.brand__name{font-family:var(--display);font-size:1.16rem;font-weight:600;letter-spacing:-.01em}
.brand__sub{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase}
.nav{display:flex;align-items:center;gap:clamp(14px,2.4vw,26px);flex-wrap:wrap}
.nav a{font-size:.92rem;text-decoration:none;color:var(--muted)}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.nav .btn{margin-left:6px}

/* ---------- type ---------- */
h1,h2,h3{font-family:var(--display);font-weight:600;letter-spacing:-.015em;margin:0}
h1{font-size:clamp(2.15rem,5.2vw,3.5rem);line-height:1.1}
h2{font-size:clamp(1.5rem,3vw,2.1rem);line-height:1.2;margin-bottom:18px}
h3{font-size:1.12rem;line-height:1.3;margin-bottom:8px}
p{margin:0 0 18px}
.lede{font-size:clamp(1.06rem,1.7vw,1.3rem);color:var(--muted);max-width:62ch;line-height:1.6}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);font-weight:400;margin:0 0 22px}
.prose{max-width:64ch}
.prose p{margin-bottom:16px}

/* ---------- sections ---------- */
.hero{padding-block:clamp(64px,9vw,120px) clamp(48px,7vw,88px)}
.hero h1{max-width:17ch;margin-bottom:22px}
.section{padding-block:var(--sec);border-top:1px solid var(--rule)}
.section--tint{background:var(--panel)}

/* ---------- buttons ---------- */
.btn{display:inline-block;font-size:.92rem;font-family:var(--body);
  padding:11px 20px;border-radius:3px;text-decoration:none;cursor:pointer;
  border:1px solid var(--accent);background:var(--accent);color:#fff;
  transition:background .18s ease,color .18s ease}
.btn:hover{background:transparent;color:var(--accent)}
.btn--ghost{background:transparent;color:var(--accent);border-color:var(--rule)}
.btn--ghost:hover{border-color:var(--accent);background:transparent;color:var(--accent)}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}

/* ---------- grids ---------- */
.grid{display:grid;gap:clamp(22px,3vw,40px)}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}

.pillar{border-top:2px solid var(--accent);padding-top:18px}
.pillar h3{margin-bottom:8px}
.pillar p{color:var(--muted);font-size:.95rem;margin:0}

/* ---------- tiers ---------- */
.tier{border:1px solid var(--rule);border-radius:4px;padding:26px;background:var(--bg)}
.tier__no{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--accent);
  text-transform:uppercase;margin-bottom:12px}
.tier p{color:var(--muted);font-size:.95rem;margin:0}

/* ---------- facts / definition rows ---------- */
.rows{border-top:1px solid var(--rule);margin:0}
.row{display:grid;grid-template-columns:minmax(150px,.3fr) 1fr;gap:clamp(14px,3vw,40px);
  padding-block:20px;border-bottom:1px solid var(--rule);margin:0}
.row dt{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.row dd{margin:0;color:var(--ink)}
.row dd p{margin:0;color:var(--muted);font-size:.95rem}

/* ---------- callout ---------- */
.note{border-left:2px solid var(--accent);padding:4px 0 4px 20px;color:var(--muted);
  max-width:62ch;font-size:.98rem}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--rule);padding-block:44px;background:var(--panel)}
.site-footer__in{display:flex;justify-content:space-between;gap:26px;flex-wrap:wrap}
.site-footer a{color:var(--muted);text-decoration:none;font-size:.9rem;display:block;margin-bottom:7px}
.site-footer a:hover{color:var(--ink)}
.site-footer h4{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);margin:0 0 12px;font-weight:400}
.legal{font-size:.82rem;color:var(--muted);margin:30px 0 0;max-width:70ch}

@media (max-width:640px){
  .row{grid-template-columns:1fr;gap:6px}
  .site-header__in{min-height:60px}
  .nav{gap:12px}
  .nav a{font-size:.86rem}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}