:root {
  --ink: #09131f;
  --navy: #0d1c2c;
  --navy-2: #152b40;
  --paper: #f4f1ea;
  --white: #fffefa;
  --muted: #68727b;
  --line: #cbd0d2;
  --gold: #d0a63b;
  --gold-dark: #9a761b;
  --teal: #21a5a3;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 16px; }
a { color: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 20; padding: .75rem 1rem; background: var(--white); color: var(--ink); }
.skip-link:focus { top: 1rem; }
.site-header { position: sticky; top: 0; z-index: 10; display: grid; grid-template-columns: auto 1fr auto; align-items: center; min-height: 76px; padding: 0 clamp(1rem, 4vw, 4rem); border-bottom: 1px solid rgba(255,255,255,.13); background: rgba(9,19,31,.96); color: var(--white); backdrop-filter: blur(12px); }
.brand { display: inline-flex; align-items: center; gap: .75rem; text-decoration: none; }
.brand-mark { display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid var(--gold); color: var(--gold); font-size: .72rem; font-weight: 900; letter-spacing: .08em; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: .95rem; letter-spacing: .01em; }
.brand small { margin-top: .12rem; color: #aeb9c1; font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; }
nav { display: flex; justify-content: center; gap: 2rem; }
nav a { color: #cad2d8; font-size: .88rem; text-decoration: none; }
nav a:hover { color: var(--white); }
.header-cta { padding: .7rem 1rem; border: 1px solid rgba(255,255,255,.35); color: var(--white); font-size: .82rem; font-weight: 750; text-decoration: none; }
.hero { position: relative; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(330px, .6fr); min-height: 720px; overflow: hidden; background: var(--navy); color: var(--white); }
.hero-grid { position: absolute; inset: 0; opacity: .17; background-image: linear-gradient(rgba(255,255,255,.15) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.15) 1px, transparent 1px); background-size: 68px 68px; mask-image: linear-gradient(to bottom right, black, transparent 72%); }
.hero-copy { position: relative; z-index: 1; align-self: center; max-width: 900px; padding: 7rem clamp(1.2rem, 6vw, 7rem); }
.eyebrow, .section-number { margin: 0 0 1.2rem; color: var(--gold); font-size: .76rem; font-weight: 850; letter-spacing: .18em; text-transform: uppercase; }
h1, h2 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-weight: 400; letter-spacing: -.035em; }
h1 { max-width: 900px; font-size: clamp(3.5rem, 7vw, 7.4rem); line-height: .92; }
.hero-text { max-width: 720px; margin: 2rem 0 0; color: #cbd5dc; font-size: clamp(1.05rem, 1.8vw, 1.3rem); line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2.2rem; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: .75rem 1.15rem; font-weight: 800; text-decoration: none; }
.button-primary { background: var(--gold); color: #171306; }
.button-primary:hover { background: #dfba58; }
.button-secondary { border: 1px solid rgba(255,255,255,.35); color: var(--white); }
.button-dark { background: var(--ink); color: var(--white); }
.control-stack { position: relative; z-index: 1; display: grid; align-content: center; gap: .8rem; padding: 5rem clamp(1rem, 5vw, 5rem) 5rem 0; }
.control-card { display: grid; grid-template-columns: 44px 1fr; gap: .1rem .75rem; padding: 1.2rem; border: 1px solid rgba(255,255,255,.17); background: rgba(19,42,62,.75); }
.control-card span { grid-row: 1 / 3; color: var(--gold); font-size: .78rem; font-weight: 900; }
.control-card strong { font-size: 1rem; }
.control-card small { color: #aebac3; font-size: .82rem; line-height: 1.45; }
.positioning, .credibility { display: grid; grid-template-columns: minmax(150px, .35fr) 1fr; gap: 2rem; width: min(1160px, calc(100% - 2rem)); margin: 0 auto; padding: clamp(4rem, 8vw, 8rem) 0; }
.positioning h2, .credibility h2, .section-heading h2, .verisai h2, .final-cta h2 { font-size: clamp(2.4rem, 5.5vw, 5.3rem); line-height: 1; }
.positioning div > p, .credibility div > p, .section-heading > p, .verisai-copy > p { max-width: 760px; color: #59646d; font-size: 1.08rem; line-height: 1.75; }
.systems { padding: clamp(4rem, 8vw, 8rem) clamp(1rem, 5vw, 5rem); border-top: 1px solid var(--line); background: var(--white); }
.section-heading { max-width: 980px; margin-bottom: 3rem; }
.system-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.system-grid article { min-height: 290px; padding: 2rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.system-grid article > span { color: var(--gold-dark); font-size: .74rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.system-grid h3 { margin: 2.7rem 0 .8rem; font-family: Georgia, "Times New Roman", serif; font-size: 1.7rem; font-weight: 400; }
.system-grid p { color: #637079; line-height: 1.7; }
.editions { padding: clamp(4rem, 8vw, 8rem) clamp(1rem, 5vw, 5rem); border-top: 1px solid var(--line); background: var(--paper); }
.edition-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.edition-card { min-height: 310px; padding: 2rem; border: 1px solid var(--line); background: var(--white); }
.edition-active { border-top: 4px solid var(--teal); }
.edition-status { display: inline-block; padding: .35rem .55rem; border: 1px solid #aeb8be; color: #59646d; font-size: .7rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.edition-active .edition-status { border-color: var(--teal); color: #087270; }
.edition-card h3 { margin: 2rem 0 .7rem; font-family: Georgia, "Times New Roman", serif; font-size: 2rem; font-weight: 400; }
.edition-card p, .edition-card li { color: #637079; line-height: 1.65; }
.edition-card ul { margin: 1.2rem 0 0; padding-left: 1.1rem; }
.edition-boundary { max-width: 850px; margin: 1rem 0 0; color: #66727b; font-size: .85rem; line-height: 1.6; }
.method { padding: clamp(4rem, 8vw, 8rem) clamp(1rem, 5vw, 5rem); background: var(--navy); color: var(--white); }
.section-heading.light p:last-child { color: #b8c3cb; }
.method-list { max-width: 1120px; margin: 4rem auto 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.2); }
.method-list li { display: grid; grid-template-columns: 100px 1fr; padding: 1.3rem 0; border-bottom: 1px solid rgba(255,255,255,.2); }
.method-list li > span { color: var(--gold); font-size: .78rem; font-weight: 900; }
.method-list strong { font-family: Georgia, "Times New Roman", serif; font-size: 1.5rem; font-weight: 400; }
.method-list p { margin: .35rem 0 0; color: #b8c3cb; line-height: 1.6; }
.verisai { display: grid; grid-template-columns: 1fr minmax(340px, .7fr); gap: 3rem; align-items: center; padding: clamp(4rem, 8vw, 8rem) clamp(1rem, 6vw, 7rem); background: var(--gold); }
.verisai .section-number { color: #4d3a07; }
.verisai-copy > p { color: #352e1a; }
.decision-trail { border: 1px solid rgba(9,19,31,.35); background: rgba(255,254,250,.5); }
.decision-trail > p { margin: 0; padding: 1rem 1.2rem; border-bottom: 1px solid rgba(9,19,31,.25); font-size: .78rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.decision-trail div { display: grid; grid-template-columns: 100px 1fr; gap: 1rem; padding: 1rem 1.2rem; border-bottom: 1px solid rgba(9,19,31,.18); }
.decision-trail div:last-child { border-bottom: 0; }
.decision-trail span { color: #5c4e25; font-size: .8rem; }
.decision-trail strong { font-size: .95rem; }
.credibility { border-bottom: 1px solid var(--line); }
.founder-link { display: inline-block; margin-top: 1.2rem; padding-bottom: .2rem; border-bottom: 1px solid var(--gold-dark); color: #74580f; font-size: .85rem; font-weight: 850; letter-spacing: .03em; text-decoration: none; }
.founder-link:hover { color: var(--ink); }
.final-cta { padding: clamp(5rem, 10vw, 9rem) 1rem; background: var(--white); text-align: center; }
.final-cta h2 { max-width: 920px; margin: 0 auto 2rem; }
footer { display: grid; grid-template-columns: 1fr repeat(4, auto); gap: 2rem; align-items: center; padding: 2.5rem clamp(1rem, 4vw, 4rem); background: var(--ink); color: #acb8c0; font-size: .8rem; }
footer a { color: #d9e4ea; text-underline-offset: 3px; }
.footer-brand { color: var(--white); }

@media (max-width: 900px) {
  nav { display: none; }
  .site-header { grid-template-columns: 1fr auto; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-copy { padding-top: 6rem; padding-bottom: 3rem; }
  .control-stack { padding: 0 1.2rem 4rem; }
  .system-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .edition-grid { grid-template-columns: 1fr; }
  .verisai { grid-template-columns: 1fr; }
  footer { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .header-cta { display: none; }
  h1 { font-size: clamp(3.1rem, 16vw, 5rem); }
  .positioning, .credibility { grid-template-columns: 1fr; gap: .5rem; }
  .system-grid { grid-template-columns: 1fr; }
  .system-grid article { min-height: auto; }
  .method-list li { grid-template-columns: 52px 1fr; }
  .decision-trail div { grid-template-columns: 82px 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}