/* TrueGlass V4 — launch design system.
   Founder direction (24 Sep 2026): IBM's design language — the font,
   the image usage, the animation styles. Carbon-inspired, not an IBM
   clone: IBM Plex, a 1px-border tile grammar with zero radius, quiet
   greys with ONE accent (TrueGlass blue, never IBM's), photography over
   illustration, and two motion speeds — productive (110 ms) for
   hovers, expressive (640 ms) for one-shot entrances. Light-first; a
   reviewed dark scheme is tracked for the mobile milestone. No
   perpetual animation runs unattended over camera or evidence text;
   the landing's slab lens advances only while its section is on
   screen, stops when it leaves, and never starts under
   prefers-reduced-motion. */

:root {
  /* greys (Carbon-like scale) */
  --tg-g10: #F4F4F4;
  --tg-g20: #E0E0E0;
  --tg-g30: #C6C6C6;
  --tg-g50: #8D8D8D;
  --tg-g70: #525252;
  --tg-g80: #393939;
  --tg-g90: #262626;
  --tg-g100: #161616;

  --tg-page: #FFFFFF;
  --tg-surface: #FFFFFF;
  --tg-ink: #161616;
  --tg-muted: #525252;
  --tg-faint: #6F6F6F; /* Carbon gray-60: the smallest readable grey (4.57:1 on gray-10) */
  --tg-accent: #4566D9;
  --tg-accent-ink: #2E49B8;
  --tg-accent-tint: #EDF1FC;
  --tg-accent-light: #8FA6FF;
  --tg-border: #E0E0E0;
  --tg-border-soft: #E0E0E0;
  --tg-border-strong: #C6C6C6;

  /* state colours — the DOM suite pins these exact values */
  --tg-warning: #7A4E0A;
  --tg-warning-bg: #FBF3DF;
  --tg-warning-border: #EBD9A9;
  --tg-danger: #B42335;
  --tg-danger-bg: #FBEBED;
  --tg-success: #176B52;
  --tg-success-bg: #E7F4EE;
  --tg-danger-border: #F0C3CA;
  --tg-success-border: #BFE0D2;
  --tg-warning-row: #FFFDF6;
  --tg-danger-row: #FFFAFB;

  --tg-gutter: max(16px, env(safe-area-inset-left), env(safe-area-inset-right));

  --tg-font: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --tg-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --tg-caps-track: 0.08em;

  /* motion */
  --tg-ease: cubic-bezier(0.2, 0, 0.38, 0.9);
  --tg-productive: 110ms;
  --tg-expressive: 640ms;
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--tg-font);
  color: var(--tg-ink);
  background: var(--tg-page);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
}

img, svg, video, canvas { max-width: 100%; display: block; }

a { color: var(--tg-accent-ink); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--tg-accent); }

:focus-visible { outline: 2px solid var(--tg-accent); outline-offset: 2px; box-shadow: 0 0 0 2px #FFFFFF; }

h1, h2, h3, h4 { margin: 0 0 0.45em; line-height: 1.15; letter-spacing: -0.015em; }
h1 { font-size: clamp(2.2rem, 5vw, 3rem); font-weight: 300; letter-spacing: -0.02em; line-height: 1.08; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 300; }
h3 { font-size: 1.25rem; font-weight: 400; letter-spacing: -0.01em; }
p  { margin: 0 0 0.9em; }
strong { font-weight: 500; }

.muted { color: var(--tg-muted); }
.small { font-size: 0.875rem; }
.mono  { font-family: var(--tg-mono); font-size: 0.92em; letter-spacing: 0.01em; }
.num   { font-variant-numeric: tabular-nums; }
.lede  { font-size: 1.25rem; font-weight: 300; line-height: 1.45; color: var(--tg-muted); }
.eyebrow {
  font-family: var(--tg-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tg-accent);
  font-weight: 400;
}

.wrap { max-width: 1152px; margin: 0 auto; padding: 0 var(--tg-gutter); }
.wrap-narrow { max-width: 800px; margin: 0 auto; padding: 0 var(--tg-gutter); }
main > h1:first-child { margin-top: 24px; }
.lede { max-width: 44em; }
.section > p.muted, .section > .rule-list { max-width: 44em; }
@media (min-width: 921px) { :root { --tg-gutter: 32px; } }
@media (min-width: 1200px) { :root { --tg-gutter: 64px; } }

/* ── design-preview notice: every V4 page carries it, always visible ── */
.preview-banner {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 32px;
  padding: 6px var(--tg-gutter);
  padding-top: calc(6px + env(safe-area-inset-top));
  background: var(--tg-g10);
  border-bottom: 1px solid var(--tg-border);
  color: var(--tg-muted);
  font-size: 0.75rem;
  font-weight: 400;
  text-align: left;
  line-height: 1.4;
  justify-content: flex-start;
}
.preview-banner::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  background: var(--tg-warning);
}

/* ── header ─────────────────────────────────────────────────────────── */
.v4-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
  min-height: 72px;
  padding: 0 var(--tg-gutter);
  border-bottom: 1px solid var(--tg-border);
  background: var(--tg-surface);
}
.v4-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--tg-ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
  min-height: 44px;
}
.v4-brand img { width: 28px; height: 28px; }
.v4-nav { display: flex; align-items: center; gap: 0 28px; margin-left: auto; }
.v4-nav a {
  color: var(--tg-muted);
  text-decoration: none;
  font-weight: 400;
  font-size: 0.875rem;
  padding: 12px 0;
  border-bottom: 2px solid transparent;
  transition: color var(--tg-productive) var(--tg-ease), border-color var(--tg-productive) var(--tg-ease);
}
.v4-nav a:hover { color: var(--tg-ink); }
.v4-nav a[aria-current="page"] { color: var(--tg-ink); border-bottom-color: var(--tg-accent); }
.v4-header .btn { min-height: 48px; gap: 32px; }

/* ── footer ─────────────────────────────────────────────────────────── */
.v4-footer {
  margin-top: 72px;
  padding: 48px var(--tg-gutter) calc(40px + env(safe-area-inset-bottom));
  background: var(--tg-g100);
  color: var(--tg-g30);
  font-size: 0.8125rem;
  display: grid;
  grid-template-columns: minmax(0, 352px) minmax(0, 1fr);
  gap: 32px;
}
.v4-footer .foot-top { display: flex; flex-direction: column; gap: 14px; }
.v4-footer .foot-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #FFFFFF;
  font-weight: 500;
  font-size: 1rem;
}
.v4-footer .foot-brand img { width: 24px; height: 24px; }
.v4-footer .foot-brand .foot-tag {
  font-family: var(--tg-mono);
  color: var(--tg-g50);
  font-weight: 400;
  font-size: 0.7rem;
  letter-spacing: var(--tg-caps-track);
  text-transform: uppercase;
  margin-left: 4px;
}
.v4-footer .foot-links { display: flex; gap: 0 24px; flex-wrap: wrap; }
.v4-footer .foot-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--tg-g30);
  text-decoration: none;
  padding: 10px 0;
  transition: color var(--tg-productive) var(--tg-ease);
}
.v4-footer .foot-links a:hover { color: #FFFFFF; }
.v4-footer .foot-fine { color: var(--tg-g50); line-height: 1.55; max-width: 64em; }
.v4-footer .foot-fine p { margin: 0 0 10px; }

/* ── chips + state colours (never colour-only: text carries meaning) ── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid var(--tg-border);
  background: var(--tg-surface);
  color: var(--tg-muted);
  white-space: nowrap;
}
.chip-warn    { color: var(--tg-warning); border-color: var(--tg-warning-border); background: var(--tg-warning-bg); }
.chip-danger  { color: var(--tg-danger); border-color: var(--tg-danger-border); background: var(--tg-danger-bg); }
.chip-success { color: var(--tg-success); border-color: var(--tg-success-border); background: var(--tg-success-bg); }

/* ── buttons: square, text left, arrow right on links (Carbon grammar) ─ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 48px;
  padding: 0 16px;
  border: 1px solid transparent;
  font: 400 0.9375rem/1.2 var(--tg-font);
  cursor: pointer;
  text-decoration: none;
  text-align: left;
  transition: background-color var(--tg-productive) var(--tg-ease), color var(--tg-productive) var(--tg-ease), border-color var(--tg-productive) var(--tg-ease);
}
a.btn::after {
  content: "";
  flex: none;
  width: 16px;
  height: 16px;
  background-color: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8.5 2.5 14 8l-5.5 5.5-1-1L11.3 8.7H2v-1.4h9.3L7.5 3.5z'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8.5 2.5 14 8l-5.5 5.5-1-1L11.3 8.7H2v-1.4h9.3L7.5 3.5z'/%3E%3C/svg%3E") center / contain no-repeat;
}
.btn-primary { background: var(--tg-accent); color: #FFFFFF; }
.btn-primary:hover { background: var(--tg-accent-ink); color: #FFFFFF; }
.btn-ghost { background: var(--tg-surface); border-color: var(--tg-ink); color: var(--tg-ink); }
.btn-ghost:hover { background: var(--tg-ink); color: #FFFFFF; }
.btn-lg { min-height: 64px; min-width: 232px; font-size: 1rem; gap: 48px; }
.btn-lg::after { width: 20px; height: 20px; }
.btn-group { display: flex; gap: 1px; flex-wrap: wrap; margin-top: 16px; }
.btn-group.center { justify-content: center; }
.btn[disabled], .btn[aria-disabled="true"] {
  background: var(--tg-g10);
  border-color: var(--tg-border);
  color: var(--tg-faint);
  cursor: not-allowed;
}
.btn-ghost[aria-current="true"] { border-color: var(--tg-accent); background: var(--tg-accent-tint); color: var(--tg-accent-ink); }

/* ── cards → flat tiles ─────────────────────────────────────────────── */
.card {
  background: var(--tg-surface);
  border: 1px solid var(--tg-border);
  padding: 24px;
}
.card + .card { margin-top: 16px; }
.card > h3:first-child, .card > h2:first-child { margin-top: 0; }

/* ══ THE SLAB — option A "Clear case" ═══════════════════════════════ */
/* A graded-collectible case, in TrueGlass's own grammar: a clear
   acrylic shell with a polished rim and one inner step, a TOP label
   (identity left, Evidence Grade top-right), the photograph seated in
   the window — contained, never cropped, never covered — and a BOTTOM
   label with short details, the record code, a locator and the QR.
   The rim carries the snapshot rule, etched. No glow, no aura, no
   colour-only meaning; TrueGlass blue appears only on the locator and
   the chain marker. */
.slab {
  --slab-r: 16px;          /* case corner */
  --slab-wall: 10px;       /* acrylic between rim and labels */
  --slab-label-r: 6px;     /* label corner (= case corner − wall, softened) */
  --slab-hair: rgba(22, 22, 22, 0.08);
  color: var(--tg-ink);
  position: relative;
  isolation: isolate;
  width: min(400px, 100%);
  margin: 0;
  padding: var(--slab-wall) var(--slab-wall) 0;
  border-radius: var(--slab-r);
  /* clear acrylic: a light, slightly cool translucent fill that frosts
     whatever sits behind it (white page, hero photograph, export ground) */
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.84) 0%, rgba(246, 247, 250, 0.80) 100%);
  -webkit-backdrop-filter: blur(16px) saturate(1.05);
  backdrop-filter: blur(16px) saturate(1.05);
  box-shadow:
    0 1px 1px rgba(22, 22, 22, 0.04),
    0 16px 32px -22px rgba(22, 22, 22, 0.34);
  container-type: inline-size;
  font-size: 16px;
}
/* the polished rim: a 1.5px brushed-silver ring, light catching the
   top-left and bottom-right corners */
.slab::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: inherit;
  padding: 1.75px;
  background: linear-gradient(150deg,
    #D3D8DF 0%, #FFFFFF 7%, #AAB1BC 21%, #F2F3F6 36%, #9CA4B0 53%,
    #F5F6F8 69%, #ADB4BF 85%, #D9DDE3 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  pointer-events: none;
}
/* the inner step of the acrylic: one faint line with a bright lip */
.slab::after {
  content: "";
  position: absolute;
  inset: 5px;
  z-index: 1;
  border-radius: calc(var(--slab-r) - 5px);
  border: 1px solid rgba(132, 140, 152, 0.2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95), 0 1px 0 rgba(255, 255, 255, 0.6);
  pointer-events: none;
}

/* ── the two label inserts (top + bottom): frosted white, etched frame ── */
.slab-label,
.slab-foot {
  position: relative;
  z-index: 3;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(251, 251, 252, 0.96) 100%);
  border-radius: var(--slab-label-r);
  box-shadow:
    0 0 0 1px rgba(22, 22, 22, 0.075),
    inset 0 0 0 3px #FFFFFF,
    inset 0 0 0 4px rgba(22, 22, 22, 0.05);
}

/* top label: identity left, the grade top-right */
.slab-label-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 12px;
  padding: 14px 16px 13px 15px;
}
.slab-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.slab-brand img { width: 28px; height: 28px; flex: none; }
.slab-brand-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.slab-brand-name {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  line-height: 1.1;
}
.slab-brand-sub {
  font-family: var(--tg-mono);
  font-size: 0.59375rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tg-muted);
  line-height: 1.2;
}
.slab-demo-tag {
  font-family: var(--tg-mono);
  font-size: 0.5625rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--tg-muted);
  border: 1px solid var(--tg-g30);
  border-radius: 3px;
  padding: 1px 4px 0;
  line-height: 1.35;
}
.slab-grade {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  margin-left: auto;
  text-align: right;
  flex: none;
}
.slab-grade-value {
  display: flex;
  align-items: baseline;
  font-variant-numeric: tabular-nums;
  font-size: 3rem;
  font-weight: 300;
  line-height: 0.86;
  letter-spacing: -0.035em;
  color: var(--tg-ink);
}
.slab-grade-max {
  margin-left: 3px;
  font-size: 0.9375rem;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--tg-muted);
}
.slab-grade-label {
  display: block;
  margin-top: 7px;
  font-family: var(--tg-mono);
  font-size: 0.59375rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tg-muted);
  line-height: 1.2;
  white-space: nowrap;
}
/* revoked: the status replaces the number — text, not just colour */
.slab-grade-na {
  font-size: 1.375rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--tg-danger);
}
.slab-status-override {
  margin: 0;
  padding: 10px 20px;
  border-bottom: 1px solid var(--tg-danger-border);
  background: var(--tg-danger-bg);
  color: var(--tg-danger);
  font-weight: 500;
  font-size: 0.875rem;
}
.slab .slab-status-override {
  margin: 0 7px 7px;
  padding: 7px 10px;
  border: 1px solid var(--tg-danger-border);
  border-radius: 3px;
  background: var(--tg-danger-bg);
  color: var(--tg-danger);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.35;
}

/* the window: the photograph sits in the case, contained, never
   cropped or covered; the window hugs the photo's own aspect ratio */
.slab-photo {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 12px 4px;
}
.slab-photo img {
  width: auto;
  height: auto;
  min-width: 0;
  max-width: 100%;
  max-height: 460px;
  margin: 0 auto;
  border-radius: 2px;
  /* seated: a bright lip and a fine cavity line — no glow, no aura */
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.9),
    0 0 0 2px rgba(104, 112, 124, 0.26),
    0 3px 8px -4px rgba(22, 22, 22, 0.22);
}

/* bottom label: short details left, QR right */
.slab-foot { padding: 13px 13px 12px 16px; }
.slab-foot-row { display: flex; align-items: center; gap: 14px; }
.slab-foot-text { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.slab-label-meta { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.slab-meta-line {
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--tg-ink);
}
.slab-meta-line > span:last-child, .slab-sep { color: var(--tg-muted); font-weight: 400; }
.slab-code {
  font-family: var(--tg-mono);
  letter-spacing: 0.04em;
  color: var(--tg-ink);
  white-space: nowrap;
  line-height: 1.4;
  font-size: min(0.6875rem, 3.6cqw);
}
.slab-creator {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.35;
  color: var(--tg-muted);
  overflow-wrap: anywhere;
  min-width: 0;
}
.slab-creator .slab-handle { color: var(--tg-ink); font-weight: 500; }
.slab-link {
  margin-top: 3px;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--tg-accent-ink);
}
.slab-qr {
  flex: none;
  width: 64px;
  height: 64px;
  padding: 4px;
  background: #FFFFFF;
  border: 1px solid rgba(22, 22, 22, 0.12);
  border-radius: 4px;
}
.slab-qr img, .slab-qr svg { width: 100%; height: 100%; }
.slab-chainline {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 11px 0 0;
  padding-top: 9px;
  border-top: 1px solid var(--slab-hair);
  font-size: 0.6875rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--tg-muted);
}
.slab-chainline::before { content: ""; flex: none; width: 6px; height: 6px; background: var(--tg-accent); }
.slab-chainline.is-pending::before { background: transparent; box-shadow: inset 0 0 0 1px var(--tg-accent); }

/* etched on the rim, below the bottom label: what a snapshot is */
.slab-context {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  gap: 4px 10px;
  flex-wrap: wrap;
  padding: 8px 6px 9px;
  font-family: var(--tg-mono);
  font-size: 0.59375rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.3;
  color: var(--tg-muted);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.75);
}

/* narrow cases: the details take two clean lines, no orphan separator */
@container (max-width: 359px) {
  .slab-meta-line > span:not(.slab-sep) { display: block; }
  .slab-sep { display: none; }
}
@container (max-width: 372px) {
  .slab-label-top { padding: 12px 13px 11px 12px; }
  .slab-brand { gap: 8px; }
  .slab-brand img { width: 24px; height: 24px; }
  .slab-brand-name { font-size: 0.75rem; letter-spacing: 0.14em; }
  .slab-grade-value { font-size: 2.625rem; }
  .slab-foot { padding: 12px 11px 11px 13px; }
  .slab-foot-row { gap: 12px; }
  .slab-qr { width: 58px; height: 58px; padding: 3px; }
  .slab-photo { padding: 10px 2px; }
}
@container (max-width: 300px) {
  .slab { --slab-wall: 8px; }
  .slab-context > span:last-child { display: none; } /* the DEMO tag stays on the label */
}
@media (forced-colors: active) {
  .slab, .slab-label, .slab-foot { border: 1px solid CanvasText; }
  .slab::before, .slab::after { display: none; }
}

/* ── generic section shells ─────────────────────────────────────────── */
.section { margin: 56px 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-2 .card + .card { margin-top: 0; }


/* ── evidence report ───────────────────────────────────────────────── */
.report-hero {
  display: grid;
  grid-template-columns: minmax(0, 400px) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  margin: 32px 0 8px;
}
.report-hero > * { min-width: 0; }
.hero-slab { display: flex; justify-content: center; width: 100%; }
.report-headline h1 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
.report-key {
  display: grid;
  grid-template-columns: repeat(4, max-content);
  gap: 4px 32px;
  align-items: end;
  margin: 16px 0 4px;
}
.report-key .grade-big { font-size: 3.25rem; line-height: 1; }
.report-key .k {
  display: block;
  font-family: var(--tg-mono);
  font-size: 0.625rem;
  letter-spacing: var(--tg-caps-track);
  text-transform: uppercase;
  color: var(--tg-muted);
  margin-bottom: 4px;
}
.report-key .v { font-weight: 500; font-size: 1rem; overflow-wrap: anywhere; }
.report-key > span { min-width: 0; max-width: 100%; }
.report-status-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 16px; }
.report-establishes { font-size: 1.0625rem; border-left: 3px solid var(--tg-accent); padding: 2px 0 2px 16px; max-width: 40em; }
.report-limits { margin: 16px 0; padding: 0; list-style: none; }
.report-limits li { display: flex; gap: 10px; color: var(--tg-warning); font-size: 0.9rem; font-weight: 500; margin-bottom: 6px; }
.report-limits li::before { content: ""; flex: none; width: 8px; height: 8px; background: var(--tg-warning); margin-top: 7px; }
.report-actions { display: flex; flex-wrap: wrap; gap: 1px; margin-top: 20px; }

.ev-section { margin: 40px 0; }
.ev-section > h2 { font-size: 1.5rem; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.ev-section > h2 .chip { position: relative; top: -2px; }
.ev-rows { display: grid; gap: 1px; margin-top: 14px; background: var(--tg-border); border: 1px solid var(--tg-border); }
.ev-row {
  display: grid;
  grid-template-columns: minmax(120px, 200px) minmax(0, 1fr) auto;
  gap: 6px 16px;
  align-items: baseline;
  background: var(--tg-surface);
  padding: 14px 16px;
}
.ev-key { font-weight: 500; font-size: 0.9rem; }
.ev-val { font-size: 0.95rem; overflow-wrap: anywhere; }
.ev-val .sub { display: block; color: var(--tg-muted); font-size: 0.85rem; margin-top: 2px; }
.ev-src { justify-self: end; align-self: start; display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.ev-row.state-warn   { background: var(--tg-warning-row); box-shadow: inset 3px 0 0 var(--tg-warning-border); }
.ev-row.state-danger { background: var(--tg-danger-row); box-shadow: inset 3px 0 0 var(--tg-danger-border); }
.ev-row.state-empty .ev-val { color: var(--tg-muted); }

.boundary-card {
  border: 1px solid var(--tg-warning-border);
  border-left-width: 3px;
  background: var(--tg-warning-bg);
  color: var(--tg-warning);
  padding: 14px 16px;
  font-size: 0.94rem;
  font-weight: 400;
}

/* grade breakdown */
.grade-summary { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.grade-big { font-size: 3rem; font-weight: 300; font-variant-numeric: tabular-nums; letter-spacing: -0.03em; line-height: 1; }
.grade-big .of { font-size: 1.25rem; color: var(--tg-muted); font-weight: 300; }
.grade-rows, .ladder { display: grid; gap: 1px; margin-top: 16px; background: var(--tg-border); border: 1px solid var(--tg-border); }
.grade-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px;
  background: var(--tg-surface);
}
.grade-pts { font-variant-numeric: tabular-nums; font-weight: 300; font-size: 1.5rem; line-height: 1; padding-top: 2px; }
.grade-row.earned .grade-pts { color: var(--tg-ink); }
.grade-row.missed .grade-pts { color: var(--tg-warning); }
.grade-row.future .grade-pts { color: var(--tg-faint); }
.grade-row .why { color: var(--tg-muted); font-size: 0.875rem; margin: 4px 0 0; }
.grade-row.missed { background: var(--tg-warning-row); }
.grade-row.future strong { color: var(--tg-muted); }
.grade-summary > div { display: grid; gap: 4px; }
.grade-rubric { margin: 0; font-family: var(--tg-mono); font-size: 0.75rem; color: var(--tg-muted); }
.fx-switcher .btn { margin: 4px 6px 4px 0; }

.hero-ctas { display: flex; gap: 1px; flex-wrap: wrap; margin: 20px 0 14px; }

/* lifecycle timeline */
.timeline { list-style: none; margin: 12px 0 0; padding: 0; }
.timeline li { position: relative; padding: 0 0 16px 22px; border-left: 1px solid var(--tg-border-strong); margin-left: 6px; }
.timeline li::before { content: ""; position: absolute; left: -5px; top: 6px; width: 9px; height: 9px; background: var(--tg-surface); border: 1px solid var(--tg-ink); }
.timeline li.event-danger::before { border-color: var(--tg-danger); background: var(--tg-danger-bg); }
.timeline .when { color: var(--tg-muted); font-size: 0.84rem; font-family: var(--tg-mono); }

/* ── capture flow ───────────────────────────────────────────────────── */
.flow-steps { display: flex; gap: 0; flex-wrap: wrap; margin: 16px 0 24px; padding: 0; list-style: none; width: fit-content; max-width: 100%; }
.flow-steps li { font-size: 0.8125rem; font-weight: 500; color: var(--tg-muted); background: var(--tg-surface); border: 1px solid var(--tg-border); margin: 0 -1px -1px 0; padding: 8px 14px; }
.flow-steps li[aria-current="step"] { color: var(--tg-accent-ink); background: var(--tg-accent-tint); }
.flow-steps li.unavailable { color: var(--tg-faint); }

.camera-stage {
  position: relative;
  background: var(--tg-g100);
  overflow: hidden;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.camera-stage video, .camera-stage img.shot { width: 100%; max-height: 62vh; object-fit: contain; }
.camera-empty { color: var(--tg-g30); text-align: center; padding: 40px 20px; max-width: 32em; }
.camera-controls { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; justify-items: center; gap: 12px; padding: 16px 0 4px; }
.camera-controls > .btn:first-child { justify-self: end; }
.camera-controls > .btn:last-child { justify-self: start; }
.shutter {
  width: 72px;
  height: 72px;
  border-radius: 999px;
  border: 3px solid var(--tg-ink);
  background: var(--tg-surface);
  box-shadow: inset 0 0 0 3px var(--tg-surface), inset 0 0 0 30px var(--tg-accent);
  cursor: pointer;
  transition: transform var(--tg-productive) var(--tg-ease);
}
.shutter:active { transform: scale(0.96); }
.shutter:focus-visible { box-shadow: inset 0 0 0 3px var(--tg-surface), inset 0 0 0 30px var(--tg-accent), 0 0 0 2px #FFFFFF; }
.cam-status-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }

.choice-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 16px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--tg-border);
}
.choice-row:last-child { border-bottom: 0; }
.choice-row .hint { color: var(--tg-muted); font-size: 0.86rem; margin: 2px 0 0; }
.choice-row select {
  font: 400 1rem var(--tg-font);
  color: var(--tg-ink);
  border: 1px solid var(--tg-border-strong);
  border-bottom-color: var(--tg-ink);
  padding: 10px 12px;
  background: var(--tg-g10);
  min-height: 44px;
}

.rule-list { margin: 0; padding-left: 1.2em; }
.rule-list li { margin-bottom: 8px; }

/* ── FAQ: Carbon accordion ─────────────────────────────────────────── */
details.faq { border-top: 1px solid var(--tg-border-strong); background: transparent; padding: 0; margin: 0; }
details.faq:last-of-type { border-bottom: 1px solid var(--tg-border-strong); }
details.faq summary {
  list-style: none;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  font-size: 1.125rem;
  font-weight: 400;
  cursor: pointer;
  transition: background-color var(--tg-productive) var(--tg-ease);
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after {
  content: "";
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  background-color: var(--tg-ink);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M7.25 2h1.5v5.25H14v1.5H8.75V14h-1.5V8.75H2v-1.5h5.25z'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M7.25 2h1.5v5.25H14v1.5H8.75V14h-1.5V8.75H2v-1.5h5.25z'/%3E%3C/svg%3E") center / contain no-repeat;
  transition: transform var(--tg-productive) var(--tg-ease);
}
details.faq[open] summary::after {
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M2 7.25h12v1.5H2z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M2 7.25h12v1.5H2z'/%3E%3C/svg%3E");
}
details.faq p { color: var(--tg-muted); font-size: 0.875rem; line-height: 1.55; margin: 0 0 22px; max-width: 60ch; }

/* time evidence table */
.t-table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
.t-table th, .t-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--tg-border); vertical-align: top; }
.t-table th { font-family: var(--tg-mono); font-size: 0.6875rem; text-transform: uppercase; letter-spacing: var(--tg-caps-track); color: var(--tg-muted); font-weight: 500; background: var(--tg-g10); }
.t-table td.mono { white-space: nowrap; }

/* skip link for keyboard users */
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--tg-surface); color: var(--tg-ink); padding: 10px 16px; z-index: 100; }
.skip-link:focus { left: 0; }

/* ══ THE LANDING (founder-approved canvas, 24 Sep) ════════════════════ */
.page-land main { max-width: none; padding: 0; }
.page-land .v4-footer { margin-top: 0; }
.land-wrap { max-width: 1280px; margin: 0 auto; padding: 0 var(--tg-gutter); }
.land-section { padding: 96px 0; border-top: 1px solid var(--tg-border); }
.band-gray { background: var(--tg-g10); }
.band-dark { background: var(--tg-g100); color: var(--tg-g10); border-top-color: var(--tg-g100); }
.band-dark h2 { color: #FFFFFF; }
.band-dark .eyebrow { color: var(--tg-accent-light); }
.band-dark .land-head p { color: var(--tg-g30); }
.band-accent { background: var(--tg-accent); color: #FFFFFF; border-top-color: var(--tg-accent); }

.land-head {
  display: grid;
  grid-template-columns: minmax(0, 352px) minmax(0, 1fr);
  gap: 24px 32px;
  align-items: end;
}
.land-head > div { display: flex; flex-direction: column; gap: 16px; }
.land-head h2 { margin: 0; font-size: clamp(1.75rem, 3.4vw, 2.625rem); font-weight: 300; line-height: 1.15; letter-spacing: -0.015em; }
.land-head p { margin: 0; max-width: 620px; font-size: 1rem; line-height: 1.55; color: var(--tg-muted); }
#how .land-head p, #slab .land-head p { max-width: 560px; }
#chain .land-head p { max-width: 600px; }
.land-head .mono { font-size: 0.875rem; color: var(--tg-ink); }

/* one-shot entrance (expressive); instant under reduced motion */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity var(--tg-expressive) var(--tg-ease), transform var(--tg-expressive) var(--tg-ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: 90ms; }
.reveal[data-d="2"] { transition-delay: 180ms; }
.reveal[data-d="3"] { transition-delay: 270ms; }
.reveal[data-d="4"] { transition-delay: 360ms; }
.reveal[data-d="5"] { transition-delay: 450ms; }

/* hero: copy left, photograph right with the slab over it */
.land-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-height: 680px;
}
.land-hero-copy { display: flex; flex-direction: column; padding: 88px 56px 64px var(--tg-gutter); }
.land-hero-copy h1 { margin: 20px 0 0; font-size: clamp(2.75rem, 5.625vw, 4.5rem); font-weight: 300; line-height: 1.08; letter-spacing: -0.02em; }
.land-hero-copy .lede { margin: 24px 0 0; max-width: 500px; font-size: 1.375rem; line-height: 1.4; }
.land-hero-copy .body { margin: 24px 0 0; max-width: 480px; font-size: 1rem; line-height: 1.55; }
.land-hero-copy .hero-ctas { margin: 36px 0 0; }
.land-hero-copy .hero-boundary { margin: auto 0 0; padding-top: 32px; max-width: 480px; font-size: 0.8125rem; line-height: 1.5; color: var(--tg-muted); }
.land-hero-media { position: relative; overflow: hidden; background: var(--tg-g10); min-height: 680px; }
.land-hero-media > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.land-hero-media::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(22,22,22,0.28) 0%, rgba(22,22,22,0) 45%); }
/* the whole slab shows — its footer line is part of the point */
/* the clear case sits straight on the photograph — its own rim and
   frosted acrylic separate it; no white backplate */
.land-hero-slab { position: absolute; left: 56px; top: 56px; width: min(416px, calc(100% - 112px)); }
.land-hero-slab .slab { width: 100%; }
/* the 3:2 demo photograph fills the plate width at this size (~253px
   tall) — contained, never cropped, never letterboxed */
.land-hero-slab .slab-photo img { max-height: 260px; }
/* the hero caption keeps a backplate so it reads over any photograph;
   it sits top-right because bottom-right would overprint the slab */
.land-fig { position: absolute; right: 24px; top: 20px; font-family: var(--tg-mono); font-size: 0.6875rem; letter-spacing: 0.06em; text-transform: uppercase; color: #FFFFFF; background: rgba(22,22,22,0.72); padding: 3px 8px; }

/* tile grids: 1px gaps painted by the grid background */
.land-tiles { display: grid; gap: 1px; background: var(--tg-border); border: 1px solid var(--tg-border); margin-top: 48px; }
.land-tiles.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.land-tiles.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.land-tiles.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.land-tile {
  background: var(--tg-surface);
  min-height: 320px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: background-color var(--tg-productive) var(--tg-ease);
}
.land-tile .tnum { font-family: var(--tg-mono); font-size: 0.75rem; color: var(--tg-faint); }
.land-tile svg { width: 48px; height: 48px; color: var(--tg-ink); }
.land-tile h3 { margin: 0; font-size: 1.25rem; font-weight: 400; line-height: 1.3; }
.land-tile p { margin: 0; font-size: 0.875rem; line-height: 1.5; color: var(--tg-muted); }
.land-tile .tnote { margin-top: auto; font-family: var(--tg-mono); font-size: 0.6875rem; line-height: 1.5; color: var(--tg-faint); }
.band-dark .land-tiles { background: var(--tg-g80); border-color: var(--tg-g80); }
.band-dark .land-tile { background: var(--tg-g90); min-height: 280px; }
.band-dark .land-tile > svg:first-child { width: 40px; height: 40px; color: var(--tg-accent-light); }
.band-dark .land-tile h3 { color: #FFFFFF; }
.band-dark .land-tile p { color: var(--tg-g30); }
.land-tile .arr { width: 20px; height: 20px; margin-top: auto; color: var(--tg-accent-light); transition: transform var(--tg-productive) var(--tg-ease); }

/* the grade */
.land-grade { display: grid; grid-template-columns: minmax(0, 352px) minmax(0, 1fr); gap: 32px; align-items: start; margin-top: 48px; }
.land-grade-card { background: var(--tg-surface); border: 1px solid var(--tg-border); padding: 32px; display: flex; flex-direction: column; gap: 20px; }
.land-grade-card .big { display: flex; align-items: baseline; gap: 8px; font-variant-numeric: tabular-nums; }
.land-grade-card .big b { font-size: clamp(5rem, 9.375vw, 7.5rem); font-weight: 300; line-height: 0.9; letter-spacing: -0.04em; }
.land-grade-card .big span { font-size: 1.75rem; font-weight: 300; color: var(--tg-muted); }
.land-grade-card .ceiling { font-size: 0.875rem; }
.land-grade-card .explainer { padding-top: 16px; border-top: 1px solid var(--tg-border); font-size: 0.8125rem; line-height: 1.5; color: var(--tg-muted); }
.land-grade-card .never { display: flex; flex-direction: column; gap: 10px; padding-top: 4px; }
.land-grade-card .never .k { font-family: var(--tg-mono); font-size: 0.6875rem; letter-spacing: var(--tg-caps-track); color: var(--tg-faint); }
.land-grade-card .never .v { font-size: 0.8125rem; line-height: 1.5; color: var(--tg-muted); }
.land-checks { display: flex; flex-direction: column; background: var(--tg-surface); border: 1px solid var(--tg-border); }
.land-check { display: grid; grid-template-columns: 56px minmax(0, 300px) minmax(0, 1fr); gap: 24px; padding: 20px 24px; border-bottom: 1px solid var(--tg-border); }
.land-check:last-child { border-bottom: 0; }
.land-check.head { padding: 12px 24px; font-family: var(--tg-mono); font-size: 0.6875rem; letter-spacing: var(--tg-caps-track); color: var(--tg-faint); }
.land-check .pts { font-size: 1.5rem; font-weight: 300; }
.land-check.future .pts { color: var(--tg-faint); }
.land-check .name { display: flex; flex-direction: column; gap: 6px; }
.land-check .name b { font-size: 1rem; font-weight: 500; }
.land-check .name span { font-size: 0.75rem; }
.land-check .state-pass { color: var(--tg-success); }
.land-check .state-absent { color: var(--tg-warning); }
.land-check .state-future { color: var(--tg-faint); }
.land-check .why { font-size: 0.875rem; line-height: 1.5; color: var(--tg-muted); }
.land-noninputs { display: grid; grid-template-columns: minmax(0, 352px) minmax(0, 1fr); gap: 32px; align-items: start; margin-top: 32px; }
.land-noninputs .k { font-family: var(--tg-mono); font-size: 0.6875rem; letter-spacing: var(--tg-caps-track); color: var(--tg-faint); padding-top: 6px; }
.land-noninputs .chips { display: flex; flex-wrap: wrap; gap: 8px; }
.land-noninputs .chips .chip { white-space: normal; font-size: 0.8125rem; font-weight: 400; padding: 6px 12px; }
.land-noninputs p { flex-basis: 100%; margin: 8px 0 0; font-size: 0.8125rem; line-height: 1.5; color: var(--tg-muted); }
.land-noninputs p .mono { font-size: 0.8125rem; }

/* the slab, feature by feature */
.land-slabgrid { display: grid; grid-template-columns: minmax(0, 464px) minmax(0, 1fr); gap: 64px; align-items: start; margin-top: 48px; }
.land-slab-stage { position: relative; padding: 32px 32px 40px; background: var(--tg-g10); border: 1px solid var(--tg-border); }
.land-slab-stage .slab { width: 100%; }
.land-slab-stage .slab-photo img { max-height: 270px; }
.land-slab-box { position: relative; }
/* the lens outlines one part's own box (both axes): the clear case
   sets the details beside the QR, so a full-width band would cross it */
.lens {
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  border: 2px solid var(--tg-accent);
  border-radius: 4px;
  box-shadow: 0 0 0 4px rgba(69, 102, 217, 0.14);
  pointer-events: none;
  opacity: 0;
  transition: left 270ms var(--tg-ease), top 270ms var(--tg-ease), width 270ms var(--tg-ease), height 270ms var(--tg-ease), opacity var(--tg-productive) var(--tg-ease);
}
.lens.is-on { opacity: 1; }
.land-slab-stage .land-fig { color: var(--tg-faint); background: none; padding: 0; left: 32px; right: auto; top: auto; bottom: 10px; }
.land-features { display: flex; flex-direction: column; border-top: 1px solid var(--tg-border); margin: 0; padding: 0; list-style: none; }
.land-features li { list-style: none; margin: 0; padding: 0; }
.frow {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 24px;
  border: 0;
  border-left: 3px solid var(--tg-border);
  border-bottom: 1px solid var(--tg-border);
  background: var(--tg-surface);
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  width: 100%;
  transition: background-color var(--tg-productive) var(--tg-ease), border-color var(--tg-productive) var(--tg-ease);
}
.frow[aria-pressed="true"] { border-left-color: var(--tg-accent); background: var(--tg-accent-tint); }
.frow[aria-pressed="true"] .fnum { color: var(--tg-muted); }
.frow .fnum { font-family: var(--tg-mono); font-size: 0.75rem; color: var(--tg-faint); padding-top: 3px; }
.frow .ftxt { display: flex; flex-direction: column; gap: 6px; }
.frow .ftxt b { font-size: 1.125rem; font-weight: 400; }
.frow .ftxt span { font-size: 0.875rem; line-height: 1.5; color: var(--tg-muted); }

/* why the chain: extras */
.land-chainfacts { display: grid; grid-template-columns: minmax(0, 352px) minmax(0, 1fr); gap: 32px; align-items: start; margin-top: 32px; }
.land-chainfacts > div { display: flex; flex-direction: column; gap: 12px; }
.land-chainfacts .k { font-family: var(--tg-mono); font-size: 0.6875rem; letter-spacing: var(--tg-caps-track); color: var(--tg-g50); }
.land-chainfacts .v { font-size: 0.875rem; line-height: 1.6; color: var(--tg-g30); }
.land-ladder { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; font-family: var(--tg-mono); font-size: 0.8125rem; color: var(--tg-g10); }
.land-ladder i { font-style: normal; color: var(--tg-g50); }
.land-ladder.on-light { color: var(--tg-ink); }
.land-ladder.on-light i { color: var(--tg-faint); }
.land-chainfacts .note { font-size: 0.8125rem; line-height: 1.5; color: var(--tg-g50); }

/* mission */
.land-mission h2 { margin: 16px 0 0; max-width: 900px; font-size: clamp(2rem, 4.4vw, 3.5rem); font-weight: 300; line-height: 1.1; letter-spacing: -0.02em; }
.land-pillars { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; margin-top: 56px; }
.land-pillar { display: flex; flex-direction: column; gap: 12px; padding-top: 20px; border-top: 1px solid var(--tg-ink); }
.land-pillar b { font-size: 1.25rem; font-weight: 400; }
.land-pillar p { margin: 0; font-size: 0.9375rem; line-height: 1.55; color: var(--tg-muted); }

/* split sections (marketplace, depth) */
.land-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 464px); gap: 64px; align-items: center; }
.land-split.media-first { grid-template-columns: minmax(0, 464px) minmax(0, 1fr); }
.land-split h2 { margin: 16px 0 0; font-size: clamp(1.75rem, 3.4vw, 2.625rem); font-weight: 300; line-height: 1.15; letter-spacing: -0.015em; }
.land-split .copy > p { margin: 24px 0 0; max-width: 600px; font-size: 1rem; line-height: 1.55; color: var(--tg-muted); }
.land-split .copy > p + p { margin-top: 16px; }
.land-split .copy .fine { font-size: 0.8125rem; line-height: 1.5; }
.land-figure { position: relative; min-height: 380px; background: var(--tg-surface); border: 1px solid var(--tg-border); padding: 32px; display: flex; align-items: center; justify-content: center; }
.band-gray .land-figure { background: var(--tg-surface); }
.land-split.media-first .land-figure { background: var(--tg-g10); }
.land-figure svg { width: 100%; max-width: 416px; height: auto; }
.land-split-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--tg-border); border: 1px solid var(--tg-border); max-width: 560px; margin-top: 32px; }
.land-split-stats > div { background: var(--tg-surface); padding: 20px; display: flex; flex-direction: column; gap: 6px; }
.land-split-stats b { font-size: 2.5rem; font-weight: 300; line-height: 1; }
.land-split-stats span { font-size: 0.8125rem; color: var(--tg-muted); }
.land-callout { margin-top: 28px; max-width: 600px; padding: 16px 20px; background: var(--tg-g10); border-left: 3px solid var(--tg-ink); font-size: 0.875rem; line-height: 1.55; }

/* faq + closing */
.land-faq { display: grid; grid-template-columns: minmax(0, 352px) minmax(0, 1fr); gap: 32px; align-items: start; }
.land-faq > div:first-child { display: flex; flex-direction: column; gap: 16px; }
.land-faq h2 { margin: 0; font-size: clamp(1.75rem, 3.4vw, 2.625rem); font-weight: 300; line-height: 1.15; }
.land-cta { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 480px); gap: 32px 64px; align-items: center; }
.land-cta h2 { margin: 0; color: #FFFFFF; font-size: clamp(1.75rem, 3.75vw, 3rem); font-weight: 300; line-height: 1.1; letter-spacing: -0.02em; }
.land-cta .hero-ctas { margin: 0; }
.land-cta .btn-dark { background: var(--tg-g100); color: #FFFFFF; }
.land-cta .btn-dark:hover { background: var(--tg-g90); color: #FFFFFF; }
.land-cta .btn-white { background: #FFFFFF; color: var(--tg-ink); }
.land-cta .btn-white:hover { background: var(--tg-g10); color: var(--tg-ink); }

/* ── responsive ─────────────────────────────────────────────────────── */
@media (max-width: 920px) {
  .report-hero { grid-template-columns: 1fr; gap: 26px; }
  .steps-strip { grid-template-columns: 1fr 1fr; }
  .v4-footer { grid-template-columns: 1fr; gap: 24px; }

  .land-section { padding: 64px 0; }
  .land-hero { grid-template-columns: 1fr; min-height: 0; }
  .land-hero-copy { padding: 48px var(--tg-gutter) 40px; }
  .land-hero-copy .hero-boundary { margin-top: 28px; padding-top: 0; }
  .land-hero-media { min-height: 0; padding: 40px var(--tg-gutter); display: flex; justify-content: center; }
  .land-hero-slab { position: relative; left: auto; top: auto; width: min(400px, 100%); }
  .land-hero-slab .slab-photo img { max-height: 270px; }
  .land-fig { position: static; display: block; margin-top: 12px; text-align: center; }
  .land-hero-media .land-fig { position: absolute; right: var(--tg-gutter); top: auto; bottom: 12px; margin: 0; }
  .land-head, .land-grade, .land-noninputs, .land-slabgrid, .land-chainfacts, .land-faq, .land-cta { grid-template-columns: 1fr; }
  .land-tiles.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .land-tiles.cols-3 { grid-template-columns: 1fr; }
  .land-tile { min-height: 0; }
  .land-check { grid-template-columns: 56px minmax(0, 1fr); }
  .land-check .why { grid-column: 2; }
  .land-check.head span:last-child { display: none; }
  /* phones: the slab stays pinned while the seven rows scroll beneath it,
     so a tapped row always moves a lens the reader can see */
  .land-slab-stage { position: sticky; top: 36px; z-index: 1; padding: 12px 16px 28px; }
  .land-slab-stage .slab-photo img { max-height: 120px; }
  .land-slab-stage .land-fig { bottom: 8px; left: 16px; }
  .land-slabgrid { gap: 24px; }
  .land-pillars { grid-template-columns: 1fr; gap: 24px; margin-top: 40px; }
  .land-split, .land-split.media-first { grid-template-columns: 1fr; gap: 32px; }
  .land-split.media-first .land-figure { order: 2; }
  .land-figure { min-height: 0; padding: 24px; }
  .land-hero-copy .btn-lg, .land-cta .btn-lg { min-width: 0; flex: 1 1 200px; }
}
@media (max-width: 640px) {
  .grid-2 { grid-template-columns: 1fr; }
  .preview-banner { justify-content: flex-start; text-align: left; font-size: 0.72rem; }
  .preview-banner .banner-more { display: none; }
  .v4-header { flex-wrap: wrap; padding-top: 8px; padding-bottom: 0; row-gap: 0; }
  .v4-header .btn { order: 2; margin-left: auto; min-height: 40px; padding: 0 12px; font-size: 0.875rem; gap: 12px; }
  .v4-nav {
    order: 3;
    flex-basis: 100%;
    margin: 0;
    flex-wrap: wrap;
    gap: 0 20px;
  }
  .v4-nav a { white-space: nowrap; padding: 12px 0 10px; }
  .choice-row { grid-template-columns: 1fr; gap: 8px; }
  .choice-row select { width: 100%; }
  .report-actions .btn, .btn-group .btn { flex: 1 1 100%; }
  .camera-controls > .btn { padding: 0 12px; font-size: 0.875rem; }
  .steps-strip { grid-template-columns: 1fr; }
  .report-key { grid-template-columns: 1fr 1fr; gap: 14px 16px; align-items: start; }
  .report-key .grade-big { font-size: 2.5rem; }
  .flow-steps li { font-size: 0.75rem; padding: 7px 10px; }
  .ev-row { grid-template-columns: 1fr; }
  .ev-src { justify-self: start; justify-content: flex-start; }
  .card { padding: 18px 16px; }
  .chip { white-space: normal; text-align: left; }
  .t-table thead { display: none; }
  .t-table, .t-table tbody, .t-table tr, .t-table td { display: block; width: 100%; }
  .t-table tr { padding: 10px 0; border-bottom: 1px solid var(--tg-border); }
  .t-table tr:last-child { border-bottom: 0; }
  .t-table td { padding: 2px 0; border-bottom: 0; }
  .t-table td.mono { white-space: normal; }
  .btn-lg { min-width: 0; }
  .hero-ctas .btn { flex: 1 1 100%; }

  .land-tiles.cols-4, .land-tiles.cols-2 { grid-template-columns: 1fr; }
  .land-check { grid-template-columns: 44px minmax(0, 1fr); gap: 12px 16px; padding: 16px; }
  .land-check.head { display: none; }
  .land-grade-card { padding: 24px; }
  .land-slab-stage { padding: 16px 16px 32px; }
  .frow { padding: 16px; }
  .land-split-stats { grid-template-columns: 1fr 1fr; }
  .land-hero-copy .lede { font-size: 1.25rem; }
}

@media (hover: hover) and (pointer: fine) {
  .land-tile:hover { background: var(--tg-g10); }
  .band-dark .land-tile:hover { background: var(--tg-g80); }
  .land-tile:hover .arr { transform: translateX(4px); }
  .frow:hover { background: var(--tg-g10); }
}
@media (min-width: 921px) {
  .report-hero .hero-slab { order: -1; }
}
@media (forced-colors: active) {
  a.btn::after, details.faq summary::after, .slab-chainline::before, .preview-banner::before { forced-color-adjust: none; background-color: CanvasText; }
  a.btn::after { background-color: currentColor; }
  .v4-nav a { border-bottom-style: none; }
  .v4-nav a[aria-current="page"] { border-bottom: 2px solid LinkText; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ── brand (founder logo, design A "Flat", 8 Oct 2026) ─────────────────
   The two-pane mark (assets/trueglass-mark-a*.svg) and the "TrueGlass"
   wordmark in the site's own typeface: "True" in ink, "Glass" in the
   accent, as in assets/brand/variations/a-flat. */
.brand-glass { color: var(--tg-accent); }
.v4-brand .brand-word { font-weight: 400; letter-spacing: -0.015em; }
.v4-footer .foot-brand .brand-word { color: #FFFFFF; font-weight: 400; }
.v4-footer .foot-brand .brand-glass { color: var(--tg-accent-light); }