/* DAVID — Governed AI for Organizations — Standalone stylesheet */

:root {
  --paper:#f3ecd8; --paper-deep:#ebe1c6; --paper-soft:#f8f3e3; --ivory:#fbf7eb;
  --ink:#181410; --ink-2:#3a322a; --ink-3:#6f6457; --ink-4:#9a8e7c;
  --rule:#d4ccb6; --rule-soft:#e3dcc4;
  --gold:#8a6a1f; --gold-bright:#b48a2a; --gold-glow:rgba(180,138,42,0.14);
  --oxblood:#6b2a2a; --night:#14110d;
  --olive:#6b8a3e; --vermilion:#9b3a2e;
  --display:"Cormorant Garamond","EB Garamond",Georgia,serif;
  --body:"Source Serif 4","Source Serif Pro",Georgia,serif;
  --mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;
  --col:72rem; --gutter:2rem;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:17px}

body{background:var(--paper);color:var(--ink-2);font-family:var(--body);font-weight:400;line-height:1.62;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.35;mix-blend-mode:multiply;background-image:radial-gradient(rgba(78,60,30,.05) 1px,transparent 1px),radial-gradient(rgba(78,60,30,.04) 1px,transparent 1px);background-size:3px 3px,7px 7px;background-position:0 0,1px 2px}
::selection{background:var(--gold-glow);color:var(--ink)}

/* Layout */
.shell{max-width:var(--col);margin:0 auto;padding:0 var(--gutter);position:relative;z-index:2}
.shell-wide{max-width:88rem;margin:0 auto;padding:0 var(--gutter);position:relative;z-index:2}
section{padding:4.5rem 0;position:relative}

/* Type */
h1,h2,h3,h4{font-family:var(--display);color:var(--ink);font-weight:500;letter-spacing:-.005em}
p{color:var(--ink-2);margin-bottom:1.1rem}
p:last-child{margin-bottom:0}
a{color:var(--gold);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .2s,color .2s}
a:hover{border-bottom-color:var(--gold)}
strong{color:var(--ink);font-weight:600}
em{font-style:italic}
.h-sub{font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.18em;color:var(--gold);font-weight:500}
.dim{color:var(--ink-3)}

/* Nav */
.nav{position:sticky;top:0;z-index:50;background:color-mix(in oklab,var(--paper) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule)}
.nav-inner{max-width:88rem;margin:0 auto;padding:1rem var(--gutter);display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:2rem}
.nav-brand{display:flex;align-items:center;gap:.7rem;color:var(--ink);border-bottom:none;font-family:var(--display);font-size:1.05rem;letter-spacing:.04em}
.nav-brand .mark{width:32px;height:auto;display:block}
.nav-brand .word{font-style:italic}
.nav-brand small{font-family:var(--mono);font-size:.62rem;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-3);display:block;margin-top:-2px}
.nav-links{display:flex;gap:2rem;justify-content:center;font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.14em}
.nav-links a{color:var(--ink-3);border-bottom:none;position:relative;padding:.25rem 0}
.nav-links a::before{content:attr(data-num);position:absolute;top:-10px;left:50%;transform:translateX(-50%);font-size:.55rem;color:var(--gold);opacity:.6}
.nav-links a:hover{color:var(--ink)}
.nav-cta{font-family:var(--mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.14em;padding:.6rem 1rem;border:1px solid var(--ink);color:var(--ink);transition:background .2s,color .2s}
.nav-cta:hover{background:var(--ink);color:var(--paper)}
.nav-toggle{display:none;background:none;border:1px solid var(--ink);padding:.5rem .7rem;cursor:pointer;font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink);min-height:44px;align-items:center}
.nav-toggle:hover{background:var(--ink);color:var(--paper)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.16em;padding:.95rem 1.6rem;border:1px solid var(--ink);color:var(--ink);background:transparent;cursor:pointer;transition:all .25s}
.btn:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn.btn-primary{background:var(--ink);color:var(--paper)}
.btn.btn-primary:hover{background:var(--gold);color:var(--night);border-color:var(--gold)}
.btn .arrow{display:inline-block;transition:transform .25s}
.btn:hover .arrow{transform:translateX(4px)}

/* Hero */
.hero{padding:6rem 0 4.5rem;text-align:center;position:relative;overflow:hidden}
.hero-halo{position:absolute;top:46%;left:50%;transform:translate(-50%,-50%);width:900px;height:700px;background:radial-gradient(ellipse at center,rgba(180,138,42,.12) 0%,rgba(180,138,42,.06) 28%,rgba(138,106,31,.025) 52%,transparent 72%);pointer-events:none;z-index:0}
.hero .shell{position:relative;z-index:2}
.hero h1{font-family:var(--display);font-weight:400;font-size:clamp(3.2rem,9vw,7rem);line-height:.94;letter-spacing:-.02em;color:var(--ink);margin-bottom:1.8rem}
.hero h1 em{color:var(--gold);font-style:italic}
.hero-subtitle{font-family:var(--body);font-size:clamp(1.05rem,1.6vw,1.22rem);line-height:1.65;color:var(--ink-2);max-width:38rem;margin:0 auto 2.2rem}
.hero-ornament{font-size:1.4rem;color:var(--gold);margin-top:2.2rem;display:block;opacity:.7}

/* How It Works */
.how-it-works{background:var(--paper-soft);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:3.5rem 0}
.hiw-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.hiw-cell{padding:2rem 1.8rem;border-right:1px solid var(--rule)}
.hiw-cell:last-child{border-right:none}
.hiw-num{font-family:var(--mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:.8rem}
.hiw-cell h3{font-family:var(--display);font-style:italic;font-weight:400;font-size:1.6rem;line-height:1.15;color:var(--ink);margin-bottom:.8rem}
.hiw-cell p{font-size:.94rem;color:var(--ink-3);line-height:1.6}

/* Chapters */
.chapter-head{display:grid;grid-template-columns:auto 1fr;gap:1.5rem;align-items:baseline;margin-bottom:2.5rem;padding-bottom:1rem;border-bottom:1px solid var(--rule-soft)}
.chapter-head .num{font-family:var(--mono);font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold)}
.chapter-head h2{font-family:var(--display);font-style:italic;font-weight:400;font-size:clamp(2rem,4vw,3.2rem);line-height:1.05;letter-spacing:-.01em}
.chapter-body{max-width:40rem}
.chapter-copy p{font-size:1.02rem;line-height:1.72;margin-bottom:1rem}
.chapter-copy blockquote{border-left:2px solid var(--rule);padding-left:1.2rem;margin:1.5rem 0;font-family:var(--display);font-style:italic;font-size:1.15rem;line-height:1.5;color:var(--ink-2)}

/* Plates */
.plate{background:var(--ink);color:var(--paper);border:1px solid #3a322a;padding:1.6rem 1.4rem;font-family:var(--mono);font-size:.76rem;line-height:1.9;position:relative;overflow:hidden}
.plate-header{display:flex;justify-content:space-between;align-items:center;padding-bottom:.7rem;margin-bottom:.7rem;border-bottom:1px solid #3a322a;font-size:.6rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold)}
.plate .line{white-space:pre-wrap;word-break:break-word}
.plate .ok{color:var(--olive)}
.plate .warn{color:var(--gold-bright)}
.plate .err{color:var(--vermilion)}
.plate .muted{color:#6f6457}
.plate .gold{color:var(--gold)}
.plate-caption{text-align:center;margin-top:1rem;font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}

/* Tablets (Plate II) */
.tablet{border:1px solid #3a322a;padding:1rem 1.2rem;margin-bottom:.8rem}
.tablet:last-child{margin-bottom:0}
.tablet.immutable{border-color:var(--gold)}
.tablet.rejected{border-color:var(--vermilion);background:rgba(155,58,46,.06)}
.tablet-name{font-family:var(--mono);font-size:.74rem;color:var(--paper);margin-bottom:.25rem}
.tablet-status{font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;text-transform:uppercase}
.tablet-status.active{color:var(--olive)}
.tablet-status.locked{color:var(--gold)}
.tablet-status.refused{color:var(--vermilion)}
.tablet-detail{font-size:.68rem;color:#6f6457;margin-top:.35rem;line-height:1.5}

/* Audit (Plate III) */
.audit-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:.7rem;margin-bottom:1.2rem}
.audit-stat{border:1px solid #3a322a;padding:.75rem .6rem;text-align:center}
.audit-stat .stat-num{font-family:var(--display);font-style:italic;font-size:1.5rem;color:var(--paper);line-height:1;margin-bottom:.25rem}
.audit-stat .stat-label{font-family:var(--mono);font-size:.52rem;letter-spacing:.14em;text-transform:uppercase;color:#6f6457}
.verdict-row{display:grid;grid-template-columns:auto 1fr auto auto;gap:.7rem;padding:.45rem 0;border-bottom:1px solid #2a241c;align-items:center;font-size:.7rem}
.verdict-row:last-child{border-bottom:none}
.verdict-time{color:#6f6457;font-size:.62rem}
.verdict-user{color:var(--paper)}
.verdict-id{color:#6f6457;font-size:.62rem}
.verdict-badge{font-family:var(--mono);font-size:.56rem;letter-spacing:.12em;text-transform:uppercase;padding:.15rem .45rem;border:1px solid;display:inline-block;line-height:1.4}
.badge-allow{color:var(--olive);border-color:var(--olive)}
.badge-flag{color:var(--gold-bright);border-color:var(--gold-bright)}
.badge-redact{color:var(--gold);border-color:var(--gold)}
.badge-block{color:var(--vermilion);border-color:var(--vermilion)}

/* Vessels */
.vessel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.vessel-card{background:var(--paper-soft);border:1px solid var(--rule);padding:1.8rem}
.vessel-tag{font-family:var(--mono);font-size:.62rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:.6rem}
.vessel-card h3{font-family:var(--display);font-size:1.4rem;font-weight:500;margin-bottom:.6rem}
.vessel-card p{font-size:.94rem;color:var(--ink-3);line-height:1.55}

/* Framework */
.framework-section{text-align:center;background:var(--paper-soft);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}

/* Closing CTA */
.cta-closing{text-align:center;padding:5rem 0}
.cta-closing h2{font-family:var(--display);font-style:italic;font-weight:400;font-size:clamp(2.2rem,5vw,3.8rem);line-height:1.05;margin-bottom:1.2rem;color:var(--ink)}
.cta-closing h2 em{color:var(--gold)}
.cta-closing p{font-size:1.02rem;color:var(--ink-3);max-width:32rem;margin:0 auto 2rem;line-height:1.65}

/* Footer */
.foot{border-top:1px solid var(--rule);padding:4rem 0 3rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem}
.foot h4{font-family:var(--mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-3);margin-bottom:1rem;font-weight:500}
.foot ul{list-style:none}
.foot ul li{margin-bottom:.5rem;font-size:.92rem}
.foot ul a{color:var(--ink-2);border-bottom:none}
.foot ul a:hover{color:var(--gold)}
.foot-bottom{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;color:var(--ink-3);padding-top:2rem;border-top:1px solid var(--rule);flex-wrap:wrap;gap:1rem}
.foot-verse{font-family:var(--display);font-style:italic;font-size:1.05rem;color:var(--ink-2);letter-spacing:0;text-transform:none}

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .75s cubic-bezier(.2,.7,.2,1),transform .75s cubic-bezier(.2,.7,.2,1)}
.reveal.is-visible{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:.08s}
.reveal-d2{transition-delay:.16s}
.reveal-d3{transition-delay:.24s}

@keyframes rise{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.rise{animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
.rise-2{animation-delay:.12s}
.rise-3{animation-delay:.24s}
.rise-4{animation-delay:.38s}
.rise-5{animation-delay:.52s}

/* Responsive */
@media(max-width:820px){
  .chapter-head{grid-template-columns:1fr;gap:.4rem}
  .hiw-grid{grid-template-columns:1fr}
  .hiw-cell{border-right:none;border-bottom:1px solid var(--rule)}
  .hiw-cell:last-child{border-bottom:none}
  .vessel-grid{grid-template-columns:1fr;gap:1.5rem}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  html{font-size:15px}
  section{padding:2.8rem 0}
  .shell,.shell-wide{padding:0 1.2rem}
  .hero{padding:4rem 0 3rem}
  .hero h1{font-size:clamp(2.4rem,12vw,3.6rem)}
  .hero-subtitle{font-size:1rem}
  .hero-halo{width:400px;height:300px}
  .btn{width:100%;justify-content:center;padding:.85rem 1.2rem}
  .foot-grid{grid-template-columns:1fr;gap:2rem}
  .foot-bottom{flex-direction:column;gap:.6rem;text-align:center}
  .chapter-copy blockquote{font-size:1.08rem}
  .nav-brand .mark{width:28px}
  a,button,.btn,.nav-cta{min-height:44px;display:inline-flex;align-items:center}
}
@media(max-width:380px){
  html{font-size:14px}
  .shell,.shell-wide{padding:0 1rem}
  .hero h1{font-size:2.2rem}
  .nav-inner{padding:.8rem 1rem;gap:.8rem}
  .nav-brand .mark{width:24px}
  .nav-brand small{display:none}
}