/* Inner-page finish (2026-10-25). Linked last on the public inner pages.
   404 as a designed page, feature-page depth (steps, details, FAQ, related), legal reading column with a sticky
   contents list. Tokens only; same look dark and light. Reduced motion: no drawing, final frame shows. */

/* ---------- 404 ---------- */
.nf { padding: 112px 0 136px; }
.nf .wrap { display: grid; gap: 72px; justify-items: center; }
.frame.nf-card, .frame.nf-card:hover { width: 100%; max-width: 600px; background: var(--bg-1); border: 1px solid var(--line-1); border-radius: 0; overflow: hidden; }
.frame.nf-card .frame-bar { height: 36px; padding: 0 16px; background: var(--bg-2); }
.nf-body { padding: 40px 40px 36px; text-align: center; }
.nf-num { display: flex; justify-content: center; align-items: center; gap: 6px; font: 500 120px/1 var(--font-ui); letter-spacing: -0.06em; color: var(--fg-0); }
.nf-0 { display: inline-block; width: 100px; height: 100px; }
.nf-0 svg { width: 100%; height: 100%; fill: none; stroke: var(--fg-0); stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; }
.nf-0 .nf-ridge { stroke: var(--fg-2); stroke-width: 4; stroke-dasharray: 140; stroke-dashoffset: 0; }
.nf-0 .nf-sun { fill: var(--fg-0); stroke: none; }
.nf h1 { margin: 28px 0 0; font: 500 var(--t-2xl)/1.2 var(--font-ui); letter-spacing: -0.02em; color: var(--fg-0); }
.nf-path { margin: 14px 0 0; font-size: var(--t-base); color: var(--fg-2); }
.nf-path code { font: 400 var(--t-sm)/18px var(--font-mono); color: var(--fg-1); padding: 2px 8px; border: 1px solid var(--line-2); border-radius: 0; word-break: break-all; }
.nf-lede { margin: 14px auto 0; max-width: 420px; font-size: var(--t-md); line-height: 22px; color: var(--fg-2); }
.nf .ctas { justify-content: center; margin-top: 28px; flex-wrap: wrap; }
.nf-next { width: 100%; max-width: 760px; }
.nf-h { margin: 0 0 8px; font: 500 var(--t-xs)/16px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--fg-2); }
.nf-next ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 40px; }
.nf-next a { display: block; padding: 16px 0; border-top: 1px solid var(--line-1); text-decoration: none; color: var(--fg-2); font-size: var(--t-base); line-height: 20px; transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease); }
.nf-next a b { display: block; font: 500 var(--t-md)/22px var(--font-ui); color: var(--fg-0); }
.nf-next a b::after { content: " →"; display: inline-block; opacity: 0; transform: translateX(-4px); transition: opacity var(--fast) var(--ease), transform var(--fast) var(--ease); }
.nf-next a:hover, .nf-next a:focus-visible { border-top-color: var(--fg-2); color: var(--fg-1); }
.nf-next a:hover b::after, .nf-next a:focus-visible b::after { opacity: 1; transform: none; }
.js .nf-0 .nf-ridge { animation: nf-draw 1400ms var(--ease) 200ms both; }
.js .nf-0 .nf-sun { animation: nf-sun 700ms var(--ease) 1200ms both; }
@keyframes nf-draw { from { stroke-dashoffset: 140; } to { stroke-dashoffset: 0; } }
@keyframes nf-sun { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.nf-0 .nf-sun { transform-box: fill-box; transform-origin: center; }
/* 404 (motion 10-25): the "where to look next" links rise in one after another once the card has landed; hover nudges
   the arrow and the title, like the landing's links. 320 ms each, 50 ms apart, ease-out. */
.js .nf-h, .js .nf-next li { animation: nf-sun 320ms var(--ease) both; animation-delay: 420ms; }
.js .nf-next li:nth-child(1) { animation-delay: 470ms; } .js .nf-next li:nth-child(2) { animation-delay: 520ms; }
.js .nf-next li:nth-child(3) { animation-delay: 570ms; } .js .nf-next li:nth-child(4) { animation-delay: 620ms; }
.js .nf-next li:nth-child(5) { animation-delay: 670ms; } .js .nf-next li:nth-child(6) { animation-delay: 720ms; }
.nf-next a b { transition: transform var(--base) var(--ease); }
.nf-next a:hover b, .nf-next a:focus-visible b { transform: translateX(3px); }
@media (max-width: 700px) {
  .nf { padding: 56px 0 72px; } .nf .wrap { gap: 48px; }
  .nf-body { padding: 28px 20px; } .nf-num { font-size: 84px; } .nf-0 { width: 70px; height: 70px; }
  .nf-next ul { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) { .js .nf-0 .nf-ridge, .js .nf-0 .nf-sun, .js .nf-h, .js .nf-next li { animation: none; } .nf-next a b { transition: none; transform: none !important; } }
html.rm .nf-0 .nf-ridge, html.rm .nf-0 .nf-sun, html.rm .nf-h, html.rm .nf-next li { animation: none; }
html.rm .nf-next a b { transition: none; transform: none !important; }

/* ---------- feature pages: hero scale, solid demo frame, depth ---------- */
.fp-hero h1 { max-width: 900px; font-size: clamp(38px, 4.6vw, 64px); line-height: 1.04; font-weight: 500; letter-spacing: -0.04em; }
.fp-hero .lede { max-width: 600px; font-size: var(--t-lg); line-height: 28px; }
.frame.fp-card, .frame.fp-card:hover { position: relative; z-index: 1; background: var(--bg-1); border: 1px solid var(--line-1); border-radius: 0; overflow: hidden; }
.frame.fp-card .frame-bar { height: 36px; padding: 0 16px; background: var(--bg-2); }
.frame.fp-card .frame-body { padding-left: 24px; padding-right: 24px; }
.frame.fp-card .fp-tabs { margin: 0; }
.fp-stage { padding-bottom: 72px; }

.fp-how, .fp-faq { padding: var(--band) 0; border-top: 1px solid var(--line-1); }
.fp-how .sec-title, .fp-faq .sec-title { margin: 18px 0 0; max-width: 760px; font-size: clamp(30px, 3.4vw, 46px); line-height: 1.08; letter-spacing: -0.035em; font-weight: 500; }
.fp-faq .sec-title { margin-top: 0; }
.fp-steps { list-style: none; margin: 56px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 48px; }
.fp-steps li { padding-top: 20px; border-top: 1px solid var(--line-2); font-size: var(--t-base); line-height: 22px; color: var(--fg-2); position: relative; }
.fp-steps li::before { content: ""; position: absolute; top: -1px; left: 0; height: 1px; width: 100%; background: var(--fg-0); transform: scaleX(0); transform-origin: left; transition: transform 900ms var(--ease); transition-delay: calc(var(--i, 0) * 160ms + 200ms); }
.fp-steps li.in::before { transform: scaleX(.18); }
.no-js .fp-steps li::before, html:not(.js) .fp-steps li::before { transform: scaleX(.18); }
.fp-steps .n { display: block; font: 500 var(--t-xs)/16px var(--font-mono); letter-spacing: .08em; color: var(--fg-3); margin-bottom: 18px; }
.fp-steps b { display: block; margin-bottom: 8px; font: 500 var(--t-lg)/24px var(--font-ui); letter-spacing: -0.01em; color: var(--fg-0); }

.fp-faq .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 48px; align-items: start; }
.fp-qs details { border-top: 1px solid var(--line-1); }
.fp-qs details:last-child { border-bottom: 1px solid var(--line-1); }
.fp-qs summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 24px; padding: 20px 0; font: 500 var(--t-md)/22px var(--font-ui); color: var(--fg-0); transition: color var(--fast) var(--ease); }
.fp-qs summary::-webkit-details-marker { display: none; }
.fp-qs summary::after { content: "+"; flex: none; font: 400 18px/22px var(--font-mono); color: var(--fg-3); transition: transform var(--base) var(--ease), color var(--fast) var(--ease); }
.fp-qs details[open] summary::after { transform: rotate(45deg); color: var(--fg-0); }
.fp-qs summary:hover { color: var(--fg-1); }
.fp-qs summary:hover::after { color: var(--fg-0); }
.fp-qs summary:focus-visible { outline: 2px solid var(--fg-0); outline-offset: 2px; }
.fp-qs p { margin: 0; padding: 0 40px 22px 0; max-width: 640px; font-size: var(--t-base); line-height: 22px; color: var(--fg-2); }
.js .fp-qs details[open] p { animation: fp-q 320ms var(--ease) both; }
@keyframes fp-q { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

.fp-faq .wrap.fp-rel { display: block; margin-top: clamp(64px, 7vw, 104px); }
.fp-rel-h { margin: 0 0 16px; font: 500 var(--t-xs)/16px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--fg-2); }
.fp-rel ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.fp-rel a { position: relative; display: block; height: 100%; padding: 24px 24px 48px; border: 1px solid var(--line-1); border-radius: 0; background: var(--bg-1); text-decoration: none; color: var(--fg-2); font-size: var(--t-base); line-height: 21px; transition: border-color var(--base) var(--ease), background-color var(--base) var(--ease), transform var(--base) var(--ease); }
.fp-rel a b { display: block; margin-bottom: 6px; font: 500 var(--t-lg)/24px var(--font-ui); color: var(--fg-0); letter-spacing: -0.01em; }
.fp-rel a .arr { position: absolute; left: 24px; bottom: 18px; font-style: normal; color: var(--fg-3); transition: transform var(--base) var(--ease), color var(--fast) var(--ease); }
.fp-rel a:hover, .fp-rel a:focus-visible { border-color: var(--line-2); background: var(--bg-2); transform: translateY(-2px); }
.fp-rel a:hover .arr, .fp-rel a:focus-visible .arr { transform: translateX(4px); color: var(--fg-0); }

@media (max-width: 800px) {
  .fp-steps, .fp-rel ul { grid-template-columns: minmax(0, 1fr); }
  .fp-steps { gap: 28px; margin-top: 36px; }
  .fp-faq .wrap { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .fp-how, .fp-faq { padding: 64px 0; } .fp-faq .wrap.fp-rel { margin-top: 56px; }
  .fp-hero .lede { font-size: var(--t-md); line-height: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  .fp-steps li::before { transition: none; transform: scaleX(.18); }
  .js .fp-qs details[open] p { animation: none; }
  .fp-rel a, .fp-rel a .arr { transition: none; }
}
html.rm .fp-steps li::before { transition: none; transform: scaleX(.18); }
html.rm .fp-qs details[open] p { animation: none; }

/* ---------- privacy: on-this-page strip, sticky under the nav ---------- */
.ptoc { position: sticky; top: 60px; z-index: 40; background: var(--glass, var(--bg-0)); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-top: 1px solid var(--line-1); border-bottom: 1px solid var(--line-1); }
.ptoc .wrap { display: flex; align-items: center; gap: 24px; height: 48px; overflow-x: auto; scrollbar-width: none; white-space: nowrap; }
.ptoc .wrap::-webkit-scrollbar { display: none; }
.ptoc-h { flex: none; font: 500 var(--t-xs)/16px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--fg-3); }
.ptoc a { flex: none; font-size: var(--t-base); color: var(--fg-2); text-decoration: none; background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat; padding-bottom: 2px; transition: color var(--fast) var(--ease), background-size var(--base) var(--ease); }
.ptoc a:hover, .ptoc a:focus-visible { color: var(--fg-0); background-size: 100% 1px; }
#plain, #promises, #privReads, #privOut, #retention { scroll-margin-top: 128px; }
@media (max-width: 700px) { .ptoc .wrap { gap: 18px; } .ptoc-h { display: none; } }
@media (prefers-reduced-motion: reduce) { .ptoc a { transition: none; } }

/* ---------- footer: four groups (Product, Learn, Trust, More) ---------- */
footer.site .wrap { grid-template-columns: minmax(0, 1fr) minmax(0, 2.6fr); }
footer.site .ft-cols { grid-template-columns: repeat(4, minmax(0, 1fr)); }
footer.site .ft-col { gap: 8px; }
@media (max-width: 900px) { footer.site .wrap { grid-template-columns: minmax(0, 1fr); } footer.site .ft-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 24px; } }

/* ---------- feature stage: card centred, notes and explanations below it (models, traces) ---------- */
.fp-stage .wrap { flex-direction: column; align-items: center; gap: 0; }
.fp-stage .fp-card.fp-wide { max-width: 860px; }
.fp-stage .fp-note { width: 100%; max-width: 860px; margin: 14px 0 0 !important; text-align: center; }
.fp-stage .tx-ex-page { width: 100%; max-width: 860px; margin-top: 32px; text-align: left; }
.fp-stage .tx-ex-page .tx-pr { grid-column: 1 / -1; margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line-1); }

/* ---------- landing depth (10-25): our own numbers, built in the open, questions ---------- */
.dp-stats { margin: 48px 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line-1); }
.dp-stats > div { padding: 24px 24px 8px 0; border-right: 1px solid var(--line-1); margin: 0; }
.dp-stats > div + div { padding-left: 24px; }
.dp-stats > div:last-child { border-right: 0; }
.dp-stats dt { font: 500 var(--t-xs)/16px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--fg-3); }
.dp-stats dd { margin: 14px 0 0; font: 500 clamp(40px, 4.4vw, 64px)/1 var(--font-ui); letter-spacing: -0.04em; color: var(--fg-0); font-variant-numeric: tabular-nums; }
.dp-stats p { margin: 12px 0 0; font-size: var(--t-base); line-height: 20px; color: var(--fg-2); }
.dp-stats.k3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.dp-src { margin: 20px 0 0; max-width: 72ch; font-size: var(--t-base); line-height: 22px; color: var(--fg-2); }
.dp-src b { font-weight: 500; color: var(--fg-1); }
.dp-foot { margin: 28px 0 0; font: 400 var(--t-sm)/18px var(--font-mono); color: var(--fg-3); }
.dp-faq-in { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 48px; align-items: start; }
.dp-faq-in h2 { margin: 16px 0 0; font: 400 var(--p-d2, clamp(34px, 4.2vw, 60px))/1.02 var(--font-ui); letter-spacing: -0.042em; color: var(--fg-0); }   /* site round 2: same scale as the other section titles */
.dp-faq .fp-qs p a { color: var(--fg-0); text-underline-offset: 3px; }
@media (max-width: 900px) {
  .dp-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dp-stats > div:nth-child(2) { border-right: 0; }
  .dp-stats > div:nth-child(3) { padding-left: 0; }
  .dp-stats > div:nth-child(n+3) { border-top: 1px solid var(--line-1); }
}
@media (max-width: 700px) {
  .dp-faq-in { grid-template-columns: minmax(0, 1fr); gap: 20px; }
}

/* ---------- feature pages: the interactive demo dashboard on the page's own view ---------- */
.fp-try { padding: var(--band) 0; border-top: 1px solid var(--line-1); }
.fp-try .sec-title { margin: 18px 0 0; max-width: 820px; font-size: clamp(30px, 3.4vw, 46px); line-height: 1.08; letter-spacing: -0.035em; font-weight: 500; }
.fp-try-sub { margin: 14px 0 40px; font-size: var(--t-md); line-height: 22px; color: var(--fg-2); }
@media (max-width: 800px) { .fp-try { padding: 64px 0; } .fp-try-sub { margin-bottom: 28px; } }

/* site round 2 (10-26): traces page proof band */
.fpp-more { list-style: none; margin: 40px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 48px; }
.fpp-more li { padding: 20px 0 0; border-top: 1px solid var(--line-1); font-size: var(--t-base); line-height: 22px; color: var(--fg-2); }
.fpp-more li b { display: block; margin-bottom: 6px; font: 500 var(--t-md)/22px var(--font-ui); color: var(--fg-0); }
.fp-proof .more { margin-top: 28px; }
@media (max-width: 900px) { .fpp-more { grid-template-columns: minmax(0, 1fr); gap: 24px; } .dp-stats.k3 { grid-template-columns: minmax(0, 1fr); } .dp-stats.k3 > div { border-right: 0; padding-left: 0; border-bottom: 1px solid var(--line-1); padding-bottom: 20px; } }

/* cut-repetition (2026-10-26): blocks moved off the landing to the page that owns them.
   /features/rules: declared vs observed card; /features/limits: every-service panel; /features#install: trust tiles. */
#install .facts { list-style: none; margin: 32px 0 0; padding: 24px 0 0; border-top: 1px solid var(--line-1); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
#install .facts b { display: block; font-weight: 500; font-size: var(--t-base); color: var(--fg-0); }
#install .facts span { display: block; margin-top: 4px; font-size: var(--t-sm); line-height: 20px; color: var(--fg-2); }
@media (max-width: 900px) { #install .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 16px; } }
.fp-drift, .fp-services { padding: 96px 0 0; }
.fp-drift .prx-d, .fp-services .frame { max-width: 760px; }
.prx-d .frame-body { padding: 18px 20px 20px; }
.prx-d .hd, .prx-d .dr { display: grid; grid-template-columns: minmax(0, 1fr) 28px minmax(0, 1fr); align-items: start; }
.prx-d .hd { padding-bottom: 8px; font: 500 var(--t-xs)/16px var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--fg-3); }
.prx-d .dr { border-top: 1px solid var(--line-1); padding: 9px 0; font-size: var(--t-sm); line-height: 18px; }
.prx-d .dr > span { min-width: 0; overflow-wrap: anywhere; }
.prx-d .dr small { display: block; margin-top: 2px; font: 400 var(--t-xs)/16px var(--font-mono); color: var(--fg-3); }
.prx-d .k { color: var(--fg-1); }
.prx-d .o { color: var(--fg-0); font-family: var(--font-mono); }
.prx-d .eq { text-align: center; font: 500 var(--t-sm)/18px var(--font-mono); color: var(--fg-3); }
.prx-d .x .eq { color: var(--bad); }
.prx-d .x .o { box-shadow: inset 2px 0 0 var(--bad); padding-left: 8px; }
.prx-d .tgt { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.fp-services .frame-body { padding: 8px 20px 12px; }
@media (max-width: 700px) { .fp-drift, .fp-services { padding-top: 64px; } }

/* /features/receipt: the product demo video (moved from the landing, cut-repetition 10-26). Fixed 16:9 frame. */
.fp-demo { padding: 96px 0 0; }
.demo-h h3 { font-size: var(--t-xl); line-height: 28px; font-weight: 500; color: var(--fg-0); }
.demo-h p { margin-top: 6px; color: var(--fg-2); font-size: var(--t-md); line-height: 24px; max-width: 560px; }
.demo-frame { position: relative; margin-top: 24px; aspect-ratio: 16 / 9; background: var(--bg-1); overflow: hidden; }
.demo-frame video, .demo-frame img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; background: var(--bg-1); }
.demo-frame .demo-p { display: none; }
.demo.no-video .demo-v { display: none; } .demo.no-video .demo-p { display: block; }
#install .works { margin-top: 32px; }
@media (max-width: 700px) { .fp-demo { padding-top: 64px; } }

/* /features/traces#proof: the method stays one click away instead of a wall of text (cut-repetition 10-26) */
.dp-how { margin-top: 28px; }
.dp-how > summary { cursor: pointer; list-style: none; display: inline-flex; gap: 8px; align-items: center; font-size: var(--t-base); color: var(--fg-1); }
.dp-how > summary::-webkit-details-marker { display: none; }
.dp-how > summary::after { content: "+"; font-family: var(--font-mono); color: var(--fg-3); }
.dp-how[open] > summary::after { content: "−"; }
.dp-how > summary:hover { color: var(--fg-0); }