/* ArcVault — arcvault.in
   Palette and type taken from the ArcVault console UI. */

/* Self-hosted webfonts — no third-party requests. */
@font-face{
  font-family:"Archivo";font-style:normal;font-weight:400;font-display:swap;
  src:url("/assets/fonts/archivo-latin-400-normal.woff2") format("woff2");
}
@font-face{
  font-family:"Archivo";font-style:normal;font-weight:500;font-display:swap;
  src:url("/assets/fonts/archivo-latin-500-normal.woff2") format("woff2");
}
@font-face{
  font-family:"Archivo";font-style:normal;font-weight:600;font-display:swap;
  src:url("/assets/fonts/archivo-latin-600-normal.woff2") format("woff2");
}
@font-face{
  font-family:"Archivo";font-style:normal;font-weight:700;font-display:swap;
  src:url("/assets/fonts/archivo-latin-700-normal.woff2") format("woff2");
}
@font-face{
  font-family:"JetBrains Mono";font-style:normal;font-weight:400;font-display:swap;
  src:url("/assets/fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2");
}
@font-face{
  font-family:"JetBrains Mono";font-style:normal;font-weight:500;font-display:swap;
  src:url("/assets/fonts/jetbrains-mono-latin-500-normal.woff2") format("woff2");
}
@font-face{
  font-family:"JetBrains Mono";font-style:normal;font-weight:700;font-display:swap;
  src:url("/assets/fonts/jetbrains-mono-latin-700-normal.woff2") format("woff2");
}

:root{
  --paper:#F4F0E7;
  --paper-2:#EFEADE;
  --card:#FFFFFF;
  --navy:#17314A;
  --navy-2:#22455F;
  --amber:#B9862A;
  --amber-lt:#E5CFA1;
  --steel:#5A82AD;
  --ink:#16293A;
  --muted:#6B7A88;
  --rule:#DCD4C4;

  --sans:"Archivo","Helvetica Neue",Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;

  --wrap:1140px;
  --gut:clamp(20px,5vw,48px);
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

img,svg{max-width:100%;display:block}
a{color:var(--navy);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--amber)}

:focus-visible{outline:2.5px solid var(--amber);outline-offset:3px;border-radius:2px}

h1,h2,h3,h4{font-weight:700;letter-spacing:-.022em;line-height:1.1;margin:0}
h1{font-size:clamp(2.5rem,6vw,4.1rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.7rem)}
h3{font-size:1.22rem;letter-spacing:-.012em;line-height:1.3}
p{margin:0}

.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.lede{font-size:clamp(1.05rem,1.7vw,1.25rem);color:var(--muted);line-height:1.62;max-width:62ch}
.tight{max-width:56ch}

section{padding-block:clamp(64px,8vw,108px)}
.sec-head{max-width:64ch;margin-bottom:clamp(36px,5vw,56px)}
.sec-head p{margin-top:18px}

/* ---------- header ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(244,240,231,.92);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--rule);
}
.topbar .wrap{display:flex;align-items:center;gap:28px;height:70px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font-weight:700;font-size:1.3rem;letter-spacing:-.02em;color:var(--navy)}
.brand:hover{color:var(--navy)}
.brand svg{width:27px;height:27px;flex:none}
.brand i{font-style:normal;color:var(--steel)}

.nav{display:flex;gap:26px;margin-left:auto;align-items:center}
.nav a{color:var(--ink);text-decoration:none;font-size:.96rem;font-weight:500}
.nav a:hover,.nav a[aria-current="page"]{color:var(--amber)}
.nav a.btn,.nav a.btn:hover{color:#fff}

.btn{
  display:inline-block;padding:12px 22px;border-radius:4px;
  font-weight:600;font-size:.96rem;text-decoration:none;border:1.5px solid var(--navy);
  background:var(--navy);color:#fff;transition:background .15s ease,color .15s ease;
}
.btn:hover{background:var(--navy-2);color:#fff}
.btn-ghost{background:transparent;color:var(--navy)}
.btn-ghost:hover{background:var(--navy);color:#fff}
.btn-amber{background:var(--amber);border-color:var(--amber);color:#1b1406}
.btn-amber:hover{background:#a8771f;border-color:#a8771f;color:#1b1406}

.menu-btn{display:none;margin-left:auto;background:none;border:1.5px solid var(--rule);border-radius:4px;padding:9px 12px;font:inherit;font-size:.9rem;cursor:pointer;color:var(--navy)}

@media (max-width:900px){
  .menu-btn{display:block}
  .nav{
    display:none;position:absolute;top:70px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--rule);padding:8px var(--gut) 22px;
  }
  .nav.open{display:flex}
  .nav a{padding:13px 0;border-bottom:1px solid var(--rule)}
  .nav .btn{margin-top:16px;text-align:center;border-bottom:none}
}

/* ---------- hero ---------- */
.hero{padding-block:clamp(52px,6vw,82px) clamp(52px,6vw,78px)}
.hero-grid{display:grid;grid-template-columns:1fr 1.06fr;gap:clamp(32px,5vw,64px);align-items:center}
.hero h1{margin-bottom:24px}
.hero .lede{max-width:48ch}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-meta{margin-top:30px;font-family:var(--mono);font-size:.78rem;color:var(--muted);letter-spacing:.04em}

@media (max-width:940px){.hero-grid{grid-template-columns:1fr}}

/* ---------- manifest ledger (signature element) ---------- */
.ledger{
  background:var(--navy);border-radius:6px;overflow:hidden;
  box-shadow:0 18px 44px -24px rgba(23,49,74,.55);
}
.ledger-bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 18px;border-bottom:1px solid rgba(255,255,255,.12);
  font-family:var(--mono);font-size:.74rem;color:#9FB4C6;letter-spacing:.05em;
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--amber);display:inline-block;margin-right:8px;vertical-align:1px}
.ledger-rows{padding:6px 0;font-family:var(--mono);font-size:.72rem;overflow-x:auto}
.lrow{
  display:grid;grid-template-columns:62px 36px minmax(0,1fr) 70px 76px;gap:10px;
  padding:9px 16px;color:#D7E2EC;white-space:nowrap;min-width:440px;
}
.lrow+.lrow{border-top:1px solid rgba(255,255,255,.07)}
.lrow .t{color:#7E96AB}
.lrow .op{font-weight:700}
.op-put{color:#8FD3A4}.op-get{color:#7FB5E8}.op-del{color:#E2A0A0}
.lrow .sz{text-align:right;color:var(--amber-lt)}
.lrow .who{color:#8FA6BA;overflow:hidden;text-overflow:ellipsis}
.lrow>span:nth-child(3){overflow:hidden;text-overflow:ellipsis}
.ledger-foot{padding:12px 18px;border-top:1px solid rgba(255,255,255,.12);font-family:var(--mono);font-size:.72rem;color:#7E96AB}

.reveal{opacity:0}
.reveal.in{animation:fadeup .5s ease forwards}
@keyframes fadeup{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1}.reveal.in{animation:none}}

/* ---------- generic blocks ---------- */
.band-navy{background:var(--navy);color:#fff}
.band-navy h2,.band-navy h3{color:#fff}
.band-navy .lede{color:var(--amber-lt)}
.band-paper2{background:var(--paper-2)}
section.band-tight{padding-block:clamp(48px,5.5vw,70px)}
.band-tight .sec-head{margin-bottom:0}

.grid{display:grid;gap:clamp(18px,2.4vw,26px)}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}

.panel{background:var(--card);border:1px solid var(--rule);border-radius:6px;padding:26px 24px}
.panel h3{margin-bottom:10px}
.panel p{color:var(--muted);font-size:.96rem}
.panel.dark{background:var(--navy);border-color:var(--navy)}
.panel.dark h3{color:#fff}
.panel.dark p{color:var(--amber-lt)}

.tagline{font-family:var(--mono);font-size:.72rem;letter-spacing:.09em;color:var(--amber);margin-bottom:14px}

.code{
  background:var(--navy);color:#D7E2EC;border-radius:5px;padding:16px 18px;margin-top:16px;
  font-family:var(--mono);font-size:.78rem;line-height:1.85;white-space:pre;overflow-x:auto;
}
.code .c{color:#7E96AB}
.code .k{color:var(--amber-lt)}
.panel.dark .code{background:rgba(0,0,0,.22)}

/* rule list — the ledger motif reused for prose */
.rules{border-top:1px solid var(--rule);margin-top:8px}
.rules li{list-style:none;border-bottom:1px solid var(--rule);padding:20px 0;display:grid;grid-template-columns:minmax(180px,250px) 1fr;gap:8px 32px}
.rules ul,.rules{padding-left:0;margin-bottom:0}
ul.rules{margin:0}
.rules h3{font-size:1.05rem}
.rules p{color:var(--muted);font-size:.96rem;max-width:70ch}
@media (max-width:720px){.rules li{grid-template-columns:1fr}}

/* compliance strip */
.marks{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.mark{
  font-family:var(--mono);font-size:.76rem;letter-spacing:.05em;
  border:1px solid rgba(255,255,255,.28);color:#fff;border-radius:3px;padding:9px 14px;
}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(18px,2.4vw,26px)}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}
.step{border-top:2px solid var(--navy);padding-top:18px}
.step b{display:block;font-family:var(--mono);font-size:.78rem;color:var(--amber);margin-bottom:10px}
.step h3{font-size:1.05rem;margin-bottom:8px}
.step p{color:var(--muted);font-size:.94rem}

/* tables */
.table-wrap{overflow-x:auto;border:1px solid var(--rule);border-radius:6px;background:var(--card)}
table{border-collapse:collapse;width:100%;min-width:520px}
caption{text-align:left;padding:0 0 14px;color:var(--muted);font-size:.95rem}
th,td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--rule);font-size:.98rem}
thead th{background:var(--navy);color:#fff;font-weight:600;font-size:.92rem;letter-spacing:.01em}
tbody th{font-weight:600;background:var(--paper-2)}
td.num{font-family:var(--mono);font-size:.92rem;text-align:right;white-space:nowrap}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:none}
.note{margin-top:16px;color:var(--muted);font-size:.92rem}

/* forms */
.form{display:grid;gap:16px;max-width:560px}
.field{display:grid;gap:7px}
label{font-weight:600;font-size:.93rem}
input,select,textarea{
  font:inherit;font-size:1rem;padding:12px 14px;border:1.5px solid var(--rule);
  border-radius:4px;background:var(--card);color:var(--ink);width:100%;
}
input:focus,select:focus,textarea:focus{border-color:var(--navy);outline:none;box-shadow:0 0 0 3px rgba(23,49,74,.12)}
textarea{min-height:120px;resize:vertical}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-note{color:var(--muted);font-size:.88rem}

/* CTA band */
.cta-band{background:var(--navy);color:#fff;border-radius:8px;padding:clamp(34px,5vw,54px)}
.cta-band h2{color:#fff;margin-bottom:16px}
.cta-band p{color:var(--amber-lt);max-width:58ch}

/* footer */
.foot{border-top:1px solid var(--rule);padding-block:44px 36px;font-size:.93rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
@media (max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}
.foot h4{font-size:.82rem;font-family:var(--mono);letter-spacing:.08em;color:var(--amber);margin-bottom:14px;font-weight:500}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--navy)}
.foot p{color:var(--muted)}
.legal{margin-top:34px;padding-top:20px;border-top:1px solid var(--rule);display:flex;flex-wrap:wrap;gap:12px 26px;justify-content:space-between;font-family:var(--mono);font-size:.72rem;color:var(--muted);letter-spacing:.04em}

.skip{position:absolute;left:-9999px}
.skip:focus{left:var(--gut);top:12px;z-index:99;background:var(--navy);color:#fff;padding:10px 16px;border-radius:4px}

/* very small screens: drop the actor column so the ledger fits without scrolling */
@media (max-width:560px){
  .lrow{grid-template-columns:56px 34px minmax(0,1fr) 64px;min-width:0;font-size:.7rem;padding-inline:13px}
  .lrow .who{display:none}
  .ledger-foot{font-size:.68rem}
}