/* Website UI kit · supplemental styles
   Inherits tokens from /colors_and_type.css
   Brand v0.3 — adds composite home-page patterns:
     · Status fascicle, Section header w/ numbering, Live ledger readout,
     · K₄ architecture, Mechanism timeline, Audience matrix,
     · Pillar grid, Stack grid, Promoted quote, Annotation marks.
   See preview/pattern-*.html for canonical specimens. */

:root {
  --nav-h: 68px;
  --max: 1240px;
  --rule: rgba(10,20,38,0.10);
  --rule-dark: rgba(229,236,245,0.10);
}

body {
  background: var(--ths-bone);
  color: var(--ths-ink);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ---------- Layout primitives ---------- */

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section {
  padding: clamp(72px, 9vw, 128px) 0;
  border-top: 1px solid var(--rule);
}

.section.dark {
  background: var(--ths-ink);
  color: var(--ths-bone);
  border-top-color: var(--rule-dark);
}

.section-header {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 56px;
  margin-bottom: 56px;
  align-items: end;
}
.section-header .label { margin-bottom: 16px; }
.section-header h2 {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(32px, 4vw, 44px);
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0;
  max-width: 22ch;
}
.section-header .lede {
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg-muted);
  max-width: 52ch;
  margin: 0;
}

/* ---------- Caption / label primitive ---------- */

.label {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-subtle);
}
.section.dark .label { color: var(--ths-bone-60); }

/* ---------- Wordmark ---------- */

.wm {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  line-height: 1;
  color: var(--ths-ink);
  white-space: nowrap;
}

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 249, 252, 0.94);
  border-bottom: 1px solid var(--rule);
  height: var(--nav-h);
  display: flex;
  align-items: center;
}
.nav .container { display: flex; align-items: center; gap: 32px; width: 100%; }
.nav .brand { display: flex; align-items: center; gap: 12px; }
.nav .brand img { width: 26px; height: 26px; }
.nav .links { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.nav .link {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 400;
  color: var(--fg);
  padding: 8px 14px;
  border-radius: 2px;
  cursor: pointer;
  transition: color 120ms cubic-bezier(0.2,0.6,0.2,1);
}
.nav .link:hover { color: var(--ths-ink); }
.nav .link.active { color: var(--ths-ink); font-weight: 500; }
.nav .link .ext { color: var(--fg-subtle); margin-left: 4px; font-size: 11px; }

.nav-cta {
  margin-left: 8px;
  padding: 9px 16px;
  font-size: 13px;
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: -0.01em;
  text-transform: none;
}

.nav.dark { background: rgba(10,20,38,0.94); border-bottom-color: var(--rule-dark); }
.nav.dark .wm { color: var(--ths-bone); }
.nav.dark .link { color: var(--ths-bone-60); }
.nav.dark .link:hover { color: var(--ths-bone); }
.nav.dark .link.active { color: var(--ths-bone); }
.nav.dark .link .ext { color: rgba(229,236,245,0.40); }

/* ---------- Buttons ---------- */

.btn {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: -0.005em;
  padding: 11px 18px;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 140ms cubic-bezier(0.2,0.6,0.2,1), border-color 140ms, color 140ms;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  line-height: 1;
  text-transform: none;
}
.btn-ink { background: var(--ths-ink); color: var(--ths-bone); }
.btn-ink:hover { background: #060d19; }
.btn-bone { background: var(--ths-bone); color: var(--ths-ink); }
.btn-bone:hover { background: #FFFFFF; }
.btn-outline { background: transparent; color: var(--ths-ink); border-color: var(--ths-ink); }
.btn-outline:hover { background: var(--ths-ink); color: var(--ths-bone); }
.dark .btn-outline, .nav.dark .btn-outline {
  color: var(--ths-bone);
  border-color: rgba(229,236,245,0.30);
}
.dark .btn-outline:hover, .nav.dark .btn-outline:hover {
  border-color: var(--ths-bone);
  background: transparent;
  color: var(--ths-bone);
}
/* Inline link — only signal-blue accent, only on hover */
.btn-link {
  font-family: var(--font-sans);
  font-size: 14px;
  background: transparent;
  border: 0;
  padding: 2px 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ths-ink);
  border-bottom: 1px solid currentColor;
  transition: color 140ms;
}
.btn-link:hover { color: var(--ths-signal); }
.dark .btn-link { color: var(--ths-bone); }
.dark .btn-link:hover { color: var(--ths-signal-soft); }

/* ---------- Hero ---------- */

.hero {
  padding: clamp(88px, 11vw, 152px) 0 clamp(72px, 9vw, 120px);
  position: relative;
  overflow: hidden;
}
.hero .container { position: relative; z-index: 2; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 64px;
  align-items: end;
}
.hero-main h1 {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(56px, 7.6vw, 96px);
  line-height: 0.94;
  letter-spacing: -0.04em;
  margin: 0 0 32px;
  max-width: 12ch;
  color: var(--ths-ink);
}
.hero-main .sub {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: clamp(17px, 1.4vw, 19px);
  line-height: 1.55;
  color: var(--fg-muted);
  max-width: 56ch;
  margin: 0 0 40px;
}
.hero-main .actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Hero side panel — operational state, like a status fascicle */
.hero-side {
  border: 1px solid var(--rule);
  background: #FFFFFF;
  padding: 24px 24px 18px;
  margin-bottom: 6px;
}
.hero-side-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 4px;
}
.hero-side-rows .row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--rule);
  font-variant-numeric: tabular-nums;
}
.hero-side-rows .row:last-child { border-bottom: 0; }
.hero-side-rows .row .k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-subtle);
}
.hero-side-rows .row .v {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--ths-ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero-side-rows .status-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 999px;
  background: var(--ths-signal);
  animation: pulse-dot 1600ms linear infinite;
}
.hero-side-foot {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--fg-subtle);
}

/* ---------- Thesis ---------- */

.thesis {
  padding: clamp(72px, 9vw, 128px) 0;
  border-top: 1px solid var(--rule);
}
.thesis-grid {
  display: grid;
  grid-template-columns: 1fr 2.4fr;
  gap: 56px;
  max-width: 1100px;
}
.thesis-label .label { display: block; margin-bottom: 12px; }
.thesis-label .ref {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-subtle);
}
.thesis-body .thesis-lede {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(28px, 3.2vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--ths-ink);
  margin: 0 0 24px;
  max-width: 22ch;
}
.thesis-body p {
  font-size: 17px;
  line-height: 1.65;
  color: var(--fg);
  margin: 0 0 16px;
  max-width: 60ch;
}
.thesis-body p + p { color: var(--fg-muted); }

/* ---------- Pillars ---------- */

.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.pillar { padding: 40px 32px 36px; background: var(--ths-bone); display: flex; flex-direction: column; }
.pillar-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.pillar-head .num { color: var(--ths-ink); font-weight: 500; }
.pillar-head .cat { color: var(--fg-subtle); }
.pillar .num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fg-subtle);
}
.pillar h3 {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  max-width: 18ch;
}
.pillar p { font-size: 15px; line-height: 1.6; color: var(--fg-muted); margin: 0 0 24px; max-width: 32ch; }
.pillar .pillar-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fg-subtle);
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  margin-top: auto;
}

/* ---------- Settlement readout (dark card) ---------- */

.readout {
  background: var(--ths-hull);
  color: var(--ths-bone);
  border: 1px solid var(--rule-dark);
  padding: 24px 28px 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  line-height: 1.7;
}
.readout-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule-dark);
}
.readout-head .title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ths-bone);
}
.readout-head-meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ths-bone-60);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.readout-head .pulse {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ths-bone);
}
.readout-head .pulse-dot {
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--ths-signal);
  animation: pulse-dot 1600ms linear infinite;
}
.readout-cols {
  display: grid;
  grid-template-columns: 13ch 1fr auto;
  gap: 20px;
  padding: 6px 0 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ths-bone-60);
  border-bottom: 1px solid var(--rule-dark);
  margin-bottom: 4px;
}
.readout .row {
  display: grid;
  grid-template-columns: 13ch 1fr auto;
  gap: 20px;
  padding: 8px 0;
  border-top: 1px solid var(--rule-dark);
  font-variant-numeric: tabular-nums;
}
.readout .row:first-of-type { border-top: 0; }
.readout .k { color: var(--ths-bone-60); }
.readout .v { color: var(--ths-bone); }
.readout .v.pending { color: var(--ths-bone-60); }
.readout-foot {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--rule-dark);
  font-size: 11px;
  color: var(--ths-bone-60);
}

@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.30; } }

/* ---------- Architecture diagram ---------- */

.arch {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: start;
}
.arch-diagram { background: #FFFFFF; border: 1px solid var(--rule); padding: 16px; }
.arch-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--rule); }
.arch-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 4ch 1fr;
  gap: 16px;
  font-size: 15px;
  line-height: 1.6;
  align-items: baseline;
}
.arch-list .key { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; color: var(--fg-subtle); text-transform: uppercase; }
.arch-list .val { color: var(--fg); }
.arch-list .val strong { color: var(--ths-ink); font-weight: 500; }

/* ---------- Mechanism (timeline) ---------- */

.mech { list-style: none; padding: 0; margin: 0; }
.mech-step {
  display: grid;
  grid-template-columns: 12ch 32px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-top: 1px solid var(--rule);
}
.mech-step:last-child { border-bottom: 1px solid var(--rule); }
.mech-time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ths-ink);
  font-variant-numeric: tabular-nums;
  padding-top: 4px;
}
.mech-rail {
  position: relative;
  display: flex;
  justify-content: center;
}
.mech-rail::before {
  content: '';
  position: absolute;
  top: 0; bottom: -28px;
  left: 50%;
  width: 1px;
  background: var(--rule);
  transform: translateX(-50%);
}
.mech-step:last-child .mech-rail::before { bottom: 0; }
.mech-dot {
  position: relative;
  z-index: 1;
  width: 9px; height: 9px;
  border-radius: 999px;
  background: var(--ths-ink);
  margin-top: 8px;
}
.mech-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 8px;
}
.mech-head h4 {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -0.02em;
  margin: 0;
}
.mech-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-subtle);
}
.mech-body p { margin: 0; color: var(--fg-muted); font-size: 15px; line-height: 1.6; max-width: 60ch; }

/* ---------- Audience matrix ---------- */

.matrix-wrap { border: 1px solid var(--rule); overflow: hidden; }
.matrix { width: 100%; border-collapse: collapse; }
.matrix thead th {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  text-align: left;
  padding: 14px 24px;
  background: rgba(10,20,38,0.025);
  border-bottom: 1px solid var(--rule);
}
.matrix tbody td {
  text-align: left;
  padding: 22px 24px;
  border-top: 1px solid var(--rule);
  vertical-align: top;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--fg);
}
.matrix tbody tr:first-child td { border-top: 0; }
.matrix-th-num { width: 5ch; }
.matrix-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-subtle);
  letter-spacing: 0.04em;
  width: 5ch;
}
.matrix-who {
  font-weight: 500;
  color: var(--ths-ink);
  letter-spacing: -0.01em;
  width: 18%;
}
.matrix-what {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ths-ink);
  letter-spacing: 0;
  width: 22%;
}
.matrix-desc { color: var(--fg-muted); }

/* ---------- Quote ---------- */

.quote {
  padding: clamp(80px, 10vw, 144px) 0;
  background: var(--ths-bone);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.quote-grid {
  display: grid;
  grid-template-columns: 12ch 1fr;
  gap: 48px;
  align-items: start;
  max-width: 980px;
}
.quote-mark {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  padding-top: 16px;
  border-top: 1px solid var(--ths-ink);
}
.quote blockquote {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(32px, 3.8vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 32px;
  max-width: 22ch;
  color: var(--ths-ink);
}
.quote blockquote::before { content: '"'; }
.quote blockquote::after { content: '"'; }
.quote .attr {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.quote .attr .name { color: var(--ths-ink); }
.quote .attr .dot { color: var(--fg-subtle); }

/* ---------- Stack ---------- */

.stack-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); border-radius: 4px; }
.stack-cell { background: var(--ths-bone); padding: 28px 24px; min-height: 160px; display: flex; flex-direction: column; }
.stack-cell .num { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; color: var(--fg-subtle); text-transform: uppercase; margin-bottom: 18px; }
.stack-cell h4 { font-family: var(--font-sans); font-size: 17px; font-weight: 500; letter-spacing: -0.015em; margin: 0 0 8px; line-height: 1.25; }
.stack-cell p { font-size: 13px; line-height: 1.55; color: var(--fg-muted); margin: 0; }
.stack-cell .tail { margin-top: auto; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.04em; color: var(--fg-subtle); padding-top: 16px; }

/* ---------- CTA ---------- */

.cta {
  background: var(--ths-ink);
  color: var(--ths-bone);
  padding: clamp(80px, 9vw, 128px) 0;
  position: relative;
  overflow: hidden;
}
.cta .container { position: relative; z-index: 2; }
.cta-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; }
.cta .label { color: var(--ths-bone-60); margin-bottom: 24px; }
.spec-line.spec-line-dark { color: rgba(229,236,245,0.45); }
.spec-line.spec-line-dark::before { background: rgba(229,236,245,0.30); }
.cta-card {
  border: 1px solid var(--rule-dark);
  background: var(--ths-hull);
  padding: 22px 24px 14px;
}
.cta-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule-dark);
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.cta-card-title { color: var(--ths-bone); }
.cta-card-meta { color: var(--ths-bone-60); }
.cta-card-rows .row {
  display: grid;
  grid-template-columns: 12ch 1fr;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--rule-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.cta-card-rows .row:last-child { border-bottom: 0; }
.cta-card-rows .row .k { color: var(--ths-bone-60); text-transform: uppercase; letter-spacing: 0.14em; font-size: 10px; padding-top: 2px; }
.cta-card-rows .row .v { color: var(--ths-bone); }
.cta h2 {
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1;
  letter-spacing: -0.03em;
  font-weight: 500;
  margin: 0 0 22px;
  max-width: 14ch;
}
.cta p { color: var(--ths-bone-60); margin: 0 0 32px; font-size: 17px; line-height: 1.6; max-width: 46ch; }
.cta .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.cta .right { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em; line-height: 1.85; color: var(--ths-bone-60); }
.cta .right .row { display: grid; grid-template-columns: 12ch 1fr; gap: 12px; padding: 8px 0; border-top: 1px solid var(--rule-dark); }
.cta .right .row:first-child { border-top: 0; }
.cta .right .row .k { color: var(--ths-bone-60); text-transform: uppercase; letter-spacing: 0.14em; }
.cta .right .row .v { color: var(--ths-bone); }

/* ---------- Footer ---------- */

.footer { background: var(--ths-ink); color: var(--ths-bone-60); padding: 72px 0 32px; }
.footer .footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 48px; }
.footer .brand-col .brand-row { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.footer .brand-col .brand-row img { width: 26px; height: 26px; }
.footer .brand-col .brand-row .wm { color: var(--ths-bone); font-size: 13px; }
.footer .brand-col .tagline {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 18px;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ths-bone);
  margin: 0 0 18px;
  max-width: 22ch;
}
.footer .brand-col .addr {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.85;
  color: var(--ths-bone-60);
}
.footer h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ths-bone-60);
  margin: 0 0 16px;
}
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { font-family: var(--font-sans); font-size: 14px; line-height: 2.0; }
.footer li a { color: var(--ths-bone); cursor: pointer; transition: color 140ms; }
.footer li a:hover { color: var(--ths-signal-soft); }
.footer li .ext { color: var(--ths-bone-60); margin-left: 4px; font-size: 11px; }
.footer .legal {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--rule-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ths-bone-60);
}

/* ---------- Wireframe background motif ---------- */

.wire-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(10,20,38,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(10,20,38,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  background-position: 0 0;
}
.dark .wire-bg {
  background-image:
    linear-gradient(to right, rgba(229,236,245,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(229,236,245,0.04) 1px, transparent 1px);
}

/* Corner registration ticks — subtle structural ornament */
.regtick {
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
}
.regtick::before, .regtick::after {
  content: '';
  position: absolute;
  background: rgba(10,20,38,0.25);
}
.regtick::before { left: 0; right: 0; top: 50%; height: 1px; transform: translateY(-50%); }
.regtick::after  { top: 0; bottom: 0; left: 50%; width: 1px; transform: translateX(-50%); }
.regtick.tl { top: 24px; left: 24px; }
.regtick.tr { top: 24px; right: 24px; }
.regtick.bl { bottom: 24px; left: 24px; }
.regtick.br { bottom: 24px; right: 24px; }
.dark .regtick::before, .dark .regtick::after { background: rgba(229,236,245,0.25); }

/* Spec-line — small mono caption attached to a hairline */
.spec-line {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(10,20,38,0.45);
  pointer-events: none;
}
.spec-line::before {
  content: '';
  width: 24px; height: 1px;
  background: rgba(10,20,38,0.30);
}
.dark .spec-line { color: rgba(229,236,245,0.45); }
.dark .spec-line::before { background: rgba(229,236,245,0.30); }

/* ---------- Legal page ---------- */

.legal-page { padding: clamp(48px, 6vw, 96px) 0 clamp(64px, 8vw, 128px); }
.legal-page .container { display: grid; grid-template-columns: 220px 1fr; gap: 56px; max-width: 1100px; }
.legal-page aside { position: sticky; top: calc(var(--nav-h) + 32px); align-self: start; }
.legal-page aside .label { display: block; margin-bottom: 14px; }
.legal-page aside ul { list-style: none; padding: 0; margin: 0; }
.legal-page aside li { padding: 6px 0; }
.legal-page aside a {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--fg-muted);
  cursor: pointer;
  transition: color 140ms;
}
.legal-page aside a:hover, .legal-page aside a.active { color: var(--ths-ink); font-weight: 500; }

.legal-page article h1 { font-size: 48px; line-height: 1; letter-spacing: -0.03em; margin: 0 0 12px; font-weight: 500; }
.legal-page article .doc-meta { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-subtle); margin-bottom: 48px; }
.legal-page article section { padding: 48px 0; border-top: 1px solid var(--rule); }
.legal-page article section:first-of-type { border-top: 0; padding-top: 0; }
.legal-page article .num { display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-subtle); margin-bottom: 12px; }
.legal-page article h2 { font-family: var(--font-sans); font-weight: 500; font-size: 26px; letter-spacing: -0.02em; margin: 0 0 18px; }
.legal-page article p { font-size: 15px; line-height: 1.65; color: var(--fg); margin: 0 0 14px; max-width: 64ch; }
.legal-page article p .placeholder { background: rgba(10,20,38,0.05); color: var(--fg-muted); padding: 1px 6px; border-radius: 2px; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em; }
.legal-page article ul.bare { padding-left: 18px; margin: 0 0 16px; max-width: 64ch; }
.legal-page article ul.bare li { font-size: 15px; line-height: 1.65; padding: 4px 0; }

/* ---------- Motion page ---------- */

.motion-hero { background: var(--ths-ink); color: var(--ths-bone); padding: clamp(80px, 10vw, 140px) 0 clamp(48px, 6vw, 80px); position: relative; overflow: hidden; }
.motion-hero h1 { font-size: clamp(56px, 8vw, 88px); line-height: 0.95; letter-spacing: -0.035em; max-width: 14ch; margin: 0 0 18px; font-weight: 500; }
.motion-hero p { color: var(--ths-bone-60); font-size: 18px; max-width: 56ch; margin: 0; }
.motion-hero .label { color: var(--ths-bone-60); margin-bottom: 24px; }

.motion-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.motion-card { background: #FFFFFF; border: 1px solid var(--rule); border-radius: 4px; padding: 28px; }
.motion-card .label { margin-bottom: 14px; }
.motion-card h3 { font-family: var(--font-sans); font-size: 22px; font-weight: 500; letter-spacing: -0.02em; margin: 0 0 6px; }
.motion-card p { font-size: 14px; line-height: 1.55; color: var(--fg-muted); margin: 0 0 22px; }
.motion-card .stage { background: var(--ths-ink); border-radius: 2px; height: 220px; position: relative; overflow: hidden; }

@media (max-width: 900px) {
  .nav .links { gap: 0; }
  .nav .link { padding: 8px 10px; }
  .pillars, .stack-grid { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: 1fr 1fr; }
  .arch { grid-template-columns: 1fr; }
  .section-header { grid-template-columns: 1fr; gap: 24px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .thesis-grid { grid-template-columns: 1fr; gap: 24px; }
  .quote-grid { grid-template-columns: 1fr; gap: 16px; }
  .mech-step { grid-template-columns: 8ch 24px 1fr; gap: 16px; }
  .matrix-who, .matrix-what { width: auto; }
  .cta-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer .footer-grid { grid-template-columns: 1fr 1fr; }
  .motion-grid { grid-template-columns: 1fr; }
  .legal-page .container { grid-template-columns: 1fr; }
  .legal-page aside { position: static; }
}

/* ============================================================
   MOBILE TIERS — added 2026-04-29
   Tier 768px: large phone / small tablet
   Tier 600px: phone landscape / portrait
   Tier 480px: small phone portrait
   ============================================================ */

@media (max-width: 768px) {
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .arch { gap: 40px; }
  .section-header { gap: 32px; margin-bottom: 40px; }
}

@media (max-width: 600px) {
  /* Nav: hide wordmark, tighter links */
  .nav .brand .wm { display: none; }
  .nav .container { gap: 12px; }
  .nav .links { gap: 0; }
  .nav .link { padding: 6px 8px; font-size: 13px; }
  .nav .link .ext { display: none; }

  /* Stack & pillars → 1 column */
  .stack-grid, .pillars { grid-template-columns: 1fr; }

  /* Footer 1 col */
  .footer .footer-grid { grid-template-columns: 1fr; gap: 28px; }

  /* Mech-step: tighter mono column */
  .mech-step { grid-template-columns: 7ch 20px 1fr; gap: 12px; }

  /* Matrix: horizontal scroll on small */
  .matrix-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .matrix { min-width: 540px; }

  /* Readout: tighter columns */
  .readout { padding: 20px 18px 14px; font-size: 12px; }
  .readout-cols, .readout .row { grid-template-columns: 11ch 1fr auto; gap: 12px; }

  /* Hero: dial down */
  .hero { padding: clamp(64px, 12vw, 96px) 0 clamp(48px, 8vw, 72px); }
  .hero-main h1 { font-size: clamp(40px, 9vw, 56px); margin-bottom: 24px; }
  .hero-main .sub { font-size: 16px; margin-bottom: 28px; }
  .hero-main .actions { flex-direction: column; }
  .hero-main .actions .btn { width: 100%; justify-content: center; }
  .hero-side { padding: 18px 18px 14px; }

  /* Section header / spacing */
  .section-header { margin-bottom: 32px; gap: 16px; }
  .section-header h2 { font-size: clamp(26px, 6vw, 32px); }
  .section { padding: clamp(48px, 9vw, 80px) 0; }

  /* Thesis */
  .thesis-grid { grid-template-columns: 1fr; gap: 24px; }
  .thesis-body p { font-size: 15px; }
  .thesis-body .thesis-lede { font-size: clamp(22px, 5.5vw, 28px); }

  /* Pillar padding */
  .pillar { padding: 32px 24px 28px; }

  /* CTA cards */
  .cta-card { padding: 24px; }

  /* Arch */
  .arch { gap: 28px; }
  .arch-list li { grid-template-columns: 3ch 1fr; gap: 12px; padding: 14px 0; }

  /* Quote */
  .quote-grid { grid-template-columns: 1fr; gap: 12px; }
}

@media (max-width: 480px) {
  /* Most aggressive — small phones */
  :root { --gutter: 16px; }

  .hero-main h1 { font-size: 36px; line-height: 1.0; max-width: 100%; }
  .hero-main .sub { font-size: 15px; }

  /* Mechanism: stack vertically, hide rail */
  .mech-step { grid-template-columns: 1fr; gap: 6px; padding: 16px 0; }
  .mech-rail { display: none; }
  .mech-time { font-size: 11px; }

  .pillar { padding: 28px 20px 24px; }
  .pillar h3 { font-size: 20px; }

  /* Hero side: even tighter */
  .hero-side { padding: 14px 14px 10px; }
  .hero-side-rows .row .v { font-size: 13px; }

  /* CTA card */
  .cta-card { padding: 20px; }
}