/* ===========================================================================
   Redact AI — landing page
   Aesthetic: declassified-document editorial. Redaction bars as design language.
   =========================================================================== */

:root {
  /* Type */
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter Tight", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", "Roboto Mono", monospace;

  /* Color tokens (OKLCH, warm-tinted neutrals) */
  --paper: oklch(0.965 0.006 80);
  --paper-2: oklch(0.945 0.006 80);
  --paper-edge: oklch(0.9 0.008 80);
  --ink: oklch(0.2 0.008 80);
  --ink-2: oklch(0.36 0.008 80);
  --ink-soft: oklch(0.5 0.008 80);
  --rule: oklch(0.82 0.008 80);
  --hairline: oklch(0.86 0.008 80);
  --bar: oklch(0.14 0 0);
  --bar-ink: oklch(0.965 0.006 80);
  --stamp: oklch(0.5 0.18 28);
  --stamp-soft: oklch(0.55 0.16 28 / 0.12);
  --highlight: oklch(0.92 0.06 90);

  /* Layout */
  --col: minmax(0, 1fr);
  --maxw: 1240px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --margin-folio: clamp(1.25rem, 4vw, 4rem);

  /* Type scale */
  --fs-7xl: clamp(3.25rem, 8vw + 0.5rem, 7.5rem);
  --fs-6xl: clamp(2.5rem, 5.5vw + 0.5rem, 5rem);
  --fs-5xl: clamp(2rem, 3.5vw + 0.75rem, 3.5rem);
  --fs-4xl: clamp(1.625rem, 2vw + 0.75rem, 2.25rem);
  --fs-3xl: clamp(1.375rem, 1vw + 0.875rem, 1.625rem);
  --fs-xl: 1.1875rem;
  --fs-l: 1.0625rem;
  --fs-m: 0.9375rem;
  --fs-s: 0.8125rem;
  --fs-xs: 0.6875rem;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out-quart: cubic-bezier(0.165, 0.84, 0.44, 1);
}

[data-theme="dark"] {
  --paper: oklch(0.16 0.006 80);
  --paper-2: oklch(0.2 0.006 80);
  --paper-edge: oklch(0.24 0.008 80);
  --ink: oklch(0.94 0.005 80);
  --ink-2: oklch(0.78 0.005 80);
  --ink-soft: oklch(0.62 0.005 80);
  --rule: oklch(0.32 0.008 80);
  --hairline: oklch(0.28 0.008 80);
  --bar: oklch(0.06 0 0);
  --bar-ink: oklch(0.92 0.006 80);
  --stamp: oklch(0.7 0.16 28);
  --stamp-soft: oklch(0.65 0.16 28 / 0.18);
  --highlight: oklch(0.32 0.05 90);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: oklch(0.16 0.006 80);
    --paper-2: oklch(0.2 0.006 80);
    --paper-edge: oklch(0.24 0.008 80);
    --ink: oklch(0.94 0.005 80);
    --ink-2: oklch(0.78 0.005 80);
    --ink-soft: oklch(0.62 0.005 80);
    --rule: oklch(0.32 0.008 80);
    --hairline: oklch(0.28 0.008 80);
    --bar: oklch(0.06 0 0);
    --bar-ink: oklch(0.92 0.006 80);
    --stamp: oklch(0.7 0.16 28);
    --stamp-soft: oklch(0.65 0.16 28 / 0.18);
    --highlight: oklch(0.32 0.05 90);
  }
}

/* ============================================================ Reset / base */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-l);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
  background-image:
    radial-gradient(
      circle at 20% 0%,
      oklch(0.93 0.012 80 / 0.6) 0%,
      transparent 40%
    ),
    radial-gradient(
      circle at 100% 30%,
      oklch(0.93 0.012 80 / 0.4) 0%,
      transparent 50%
    );
  background-attachment: fixed;
}

[data-theme="dark"] body,
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) body {
    background-image:
      radial-gradient(circle at 20% 0%, oklch(0.22 0.012 80 / 0.7) 0%, transparent 40%),
      radial-gradient(circle at 100% 30%, oklch(0.22 0.012 80 / 0.5) 0%, transparent 50%);
  }
}

p {
  margin: 0 0 1em;
  text-wrap: pretty;
  max-width: 68ch;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.012em;
  line-height: 1.05;
  margin: 0 0 0.4em;
  color: var(--ink);
  text-wrap: balance;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--ink-soft);
  transition: color 0.2s var(--ease-out), text-decoration-color 0.2s var(--ease-out);
}
a:hover {
  text-decoration-color: var(--stamp);
  color: var(--stamp);
}

code,
kbd,
pre {
  font-family: var(--font-mono);
}

code {
  font-size: 0.92em;
  padding: 0.08em 0.32em;
  background: color-mix(in oklch, var(--paper-2) 70%, transparent);
  border: 1px solid var(--hairline);
  border-radius: 3px;
}

kbd {
  display: inline-block;
  padding: 0.12em 0.4em;
  margin: 0 0.12em;
  font-size: 0.78em;
  font-weight: 500;
  border: 1px solid var(--hairline);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink-2);
}

::selection {
  background: var(--bar);
  color: var(--bar-ink);
}

/* Skip link */
.skip {
  position: absolute;
  top: -100px;
  left: 1rem;
  padding: 0.5rem 0.75rem;
  background: var(--ink);
  color: var(--paper);
  z-index: 100;
}
.skip:focus {
  top: 0.75rem;
}

/* ========================================================== Layout helpers */

.section {
  padding-block: clamp(4rem, 8vw, 8rem);
  position: relative;
}

.section__inner,
.masthead__inner,
.hero__grid,
.footer__inner {
  width: min(var(--maxw), 100% - var(--gutter) * 2);
  margin-inline: auto;
  position: relative;
}

.section__head {
  max-width: 64ch;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.kicker {
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  margin: 0 0 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.kicker::before {
  content: "";
  width: 1.75rem;
  height: 1px;
  background: var(--ink-soft);
}

.section__title {
  font-size: var(--fs-5xl);
  line-height: 1.04;
}
.section__title em {
  font-style: italic;
  color: var(--ink-2);
}

.section__lede {
  font-size: var(--fs-xl);
  color: var(--ink-2);
  line-height: 1.5;
  margin-top: 1.5rem;
  max-width: 60ch;
}

/* Folio numbers running in the left margin (only on very wide screens
   where there is real space outside the content column). */
.folio {
  display: none;
  position: absolute;
  top: clamp(4rem, 8vw, 8rem);
  left: calc(50% - var(--maxw) / 2 - 6rem);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  white-space: nowrap;
  pointer-events: none;
}
.folio__num {
  font-weight: 600;
  color: var(--ink);
  margin-right: 1.5em;
}
/* Only render the marginalia when there's at least 5rem of clear space
   to the left of the content column. */
@media (min-width: 1500px) {
  .folio {
    display: inline-flex;
    align-items: center;
  }
}

/* =============================================================== Masthead */
.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklch, var(--paper) 88%, transparent);
  backdrop-filter: blur(14px) saturate(110%);
  -webkit-backdrop-filter: blur(14px) saturate(110%);
}
.masthead__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding-block: 1rem;
}
.masthead__rule {
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--rule) 10%,
    var(--rule) 90%,
    transparent
  );
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.brand:hover {
  color: var(--ink);
}
.brand__mark {
  display: inline-grid;
  grid-template-rows: 1fr 1fr;
  width: 30px;
  gap: 4px;
  padding: 4px 0;
}
.brand__bar {
  display: block;
  height: 6px;
  background: var(--bar);
  border-radius: 1px;
}
.brand__bar:last-child {
  width: 70%;
  margin-left: 30%;
}
.brand__dot {
  color: var(--stamp);
}

.nav {
  display: none;
  gap: 1.75rem;
  font-size: var(--fs-m);
  justify-self: center;
}
.nav a {
  text-decoration: none;
  color: var(--ink-2);
  position: relative;
  padding-block: 0.25rem;
}
.nav a:hover {
  color: var(--ink);
}
.nav a::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease-out);
}
.nav a:hover::after {
  transform: scaleX(1);
}
@media (min-width: 900px) {
  .nav {
    display: inline-flex;
  }
}

.masthead__cta {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
}
.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s var(--ease-out), color 0.2s var(--ease-out),
    background 0.2s var(--ease-out);
}
.theme-toggle svg {
  width: 18px;
  height: 18px;
}
.theme-toggle:hover {
  color: var(--ink);
  border-color: var(--ink-soft);
  background: var(--paper-2);
}

/* =================================================================== Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.1rem;
  font: 500 var(--fs-m) / 1 var(--font-body);
  letter-spacing: -0.005em;
  border-radius: 0;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease-out), background 0.2s var(--ease-out),
    color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}
.btn:hover {
  transform: translateY(-1px);
}
.btn--lg {
  padding: 0.95rem 1.4rem;
  font-size: var(--fs-l);
}
.btn--primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn--primary:hover {
  background: var(--stamp);
  border-color: var(--stamp);
  color: var(--paper);
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn--ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

/* ===================================================================== HERO */
.hero {
  padding-block: clamp(4rem, 9vw, 9rem) clamp(3rem, 7vw, 7rem);
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: var(--rule);
  opacity: 0.6;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas:
    "title"
    "ticker"
    "visual"
    "lede"
    "cta";
  gap: clamp(1.25rem, 3vw, 2rem);
  position: relative;
}
@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
    grid-template-areas:
      "title visual"
      "ticker visual"
      "lede visual"
      "cta visual";
    gap: clamp(1rem, 2vw, 1.5rem) clamp(2rem, 4vw, 4rem);
    align-items: start;
  }
}

.hero__title {
  grid-area: title;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--fs-6xl);
  letter-spacing: -0.025em;
  line-height: 0.96;
  font-variation-settings: "opsz" 144;
}

/* PII-type ticker below the headline */
.hero__ticker {
  grid-area: ticker;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-l);
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 0.4em;
  min-height: 1.8em;
}
.hero__ticker-word {
  display: inline-block;
  position: relative;
  color: var(--ink);
  font-weight: 600;
  padding: 0 0.15em;
}
.hero__ticker-word::after {
  content: "";
  position: absolute;
  inset: 0.05em 0;
  background: var(--bar);
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 0.4s var(--ease-out-quart);
  border-radius: 1px;
}
.hero__ticker-word[data-state="redacting"]::after {
  transform: scaleX(1);
}
.hero__ticker-word[data-state="redacted"] {
  color: transparent;
}
.hero__ticker-word[data-state="redacted"]::after {
  transform: scaleX(1);
}

.hero__lede {
  grid-area: lede;
  font-size: var(--fs-xl);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 56ch;
  margin: 0;
}
.hero__lede strong {
  color: var(--ink);
  font-weight: 600;
}

.hero__cta {
  grid-area: cta;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
}
.hero__shortcut {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-soft);
  font-size: var(--fs-s);
  width: 100%;
}

/* Hero right-column mockup */
.hero__visual {
  grid-area: visual;
  margin: 0;
  align-self: stretch;
  background: var(--paper);
  border: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-family: var(--font-body);
}
@media (max-width: 899px) {
  .hero__visual {
    max-width: 480px;
    justify-self: center;
    width: 100%;
  }
}
.hero__visual-chrome {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--hairline);
  background: var(--paper-2);
}
.hero__visual-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--ink-soft);
  opacity: 0.4;
}
.hero__visual-url {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--ink-soft);
  letter-spacing: 0.06em;
}
.hero__visual-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.1rem 1.2rem;
  gap: 0.85rem;
}
.hero__visual-draft {
  flex: 1;
  font-size: var(--fs-m);
  color: var(--ink);
  line-height: 1.65;
  min-height: 5rem;
}
.hero__visual-draft [data-pii] {
  transition: background 0.25s var(--ease-out), color 0.25s var(--ease-out);
  border-radius: 1px;
  padding: 0 0.05em;
}
.hero__visual-draft[data-mock-redacted] [data-pii] {
  background: var(--bar);
  color: var(--bar-ink);
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.05em 0.35em;
}
.hero__visual-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--hairline);
}
.hero__visual-btn {
  background: var(--ink);
  color: var(--paper);
  border: 0;
  padding: 0.55rem 0.95rem;
  font: 600 var(--fs-s) / 1 var(--font-body);
  cursor: default;
  transition: background 0.15s var(--ease-out), transform 0.1s var(--ease-out);
}
.hero__visual-btn[data-pressing] {
  transform: scale(0.95);
  background: var(--stamp);
}
.hero__visual-hint {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--ink-soft);
  letter-spacing: 0.08em;
}

/* The redaction effect headline.
   Uses box-decoration-break so each wrapped line of the inline element gets its
   own bar. Background-size animates the sweep; <mark>'s default yellow is
   reset explicitly. */
.redact {
  display: inline;
  color: transparent;
  background-color: transparent;
  background-image: linear-gradient(var(--bar), var(--bar));
  background-repeat: no-repeat;
  background-size: 100% 0.9em;
  background-position: 0 0.7em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  padding: 0 0.06em;
  border-radius: 1px;
  transition: background-size 0.75s var(--ease-out-quart),
    background-position 0s linear 0.75s,
    color 0.5s var(--ease-out-quart) 0.25s;
  animation: bar-in 0.9s var(--ease-out-quart) 0.35s both;
}
.redact[data-state="cleared"] {
  color: var(--ink);
  background-size: 0% 0.9em;
  background-position: 100% 0.7em;
  animation: none;
}
@keyframes bar-in {
  from {
    background-size: 0% 0.9em;
  }
  to {
    background-size: 100% 0.9em;
  }
}

/* Classified stamp */
.stamp {
  grid-area: stamp;
  margin: 0;
  align-self: end;
  justify-self: end;
  position: relative;
  width: clamp(170px, 22vw, 240px);
  aspect-ratio: 1;
  border-radius: 999px;
  border: 2px solid var(--stamp);
  color: var(--stamp);
  display: grid;
  place-items: center;
  text-align: center;
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  background: var(--stamp-soft);
  transform: rotate(-7deg);
  user-select: none;
  filter: contrast(1.05) saturate(0.95);
}
.stamp::before,
.stamp::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 999px;
  border: 1px solid var(--stamp);
  opacity: 0.65;
  pointer-events: none;
}
.stamp::after {
  inset: 14px;
  opacity: 0.35;
  border-style: dashed;
}
.stamp__core {
  display: grid;
  gap: 0.15em;
  font-size: clamp(0.8rem, 1.4vw, 1rem);
  line-height: 1;
}
.stamp__core span:nth-child(1) {
  font-size: 1.6em;
  font-weight: 700;
}
.stamp__ring {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  font-size: clamp(0.55rem, 0.9vw, 0.75rem);
  letter-spacing: 0.32em;
}
.stamp__line {
  position: absolute;
  width: 100%;
  text-align: center;
}
.stamp__line--top {
  top: 12%;
}
.stamp__line--bottom {
  bottom: 12%;
}

@media (max-width: 899px) {
  .stamp {
    justify-self: start;
    margin-top: 1rem;
    width: clamp(150px, 40vw, 200px);
  }
}

/* ============================================================== PROBLEM */
.section--problem {
  background: var(--paper-2);
  border-block: 1px solid var(--rule);
}
.problem__panels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
@media (min-width: 800px) {
  .problem__panels {
    grid-template-columns: repeat(3, 1fr);
  }
}
.panel {
  background: var(--paper-2);
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  display: grid;
  align-content: start;
  gap: 1rem;
}
.panel header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.5rem;
}
.panel__num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  color: var(--stamp);
}
.panel h3 {
  font-size: var(--fs-3xl);
  margin: 0;
  letter-spacing: -0.015em;
}
.panel p {
  margin: 0;
  color: var(--ink-2);
  max-width: none;
}
.panel p strong {
  color: var(--ink);
}

/* ================================================================== HOW */
.how {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(2rem, 4vw, 3.5rem);
}
.how__step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem 2rem;
  align-items: start;
  padding-bottom: clamp(2rem, 3vw, 3rem);
  border-bottom: 1px solid var(--hairline);
}
.how__step:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.how__num {
  font-family: var(--font-mono);
  font-size: var(--fs-l);
  font-weight: 600;
  color: var(--stamp);
  letter-spacing: 0.06em;
  padding-top: 0.5rem;
}
.how__step h3 {
  font-size: var(--fs-4xl);
  font-weight: 500;
  margin: 0 0 0.5rem;
  grid-column: 2;
}
.how__step p {
  grid-column: 2;
  color: var(--ink-2);
  max-width: 64ch;
  margin: 0 0 1.25rem;
}

@media (max-width: 700px) {
  .how__step {
    grid-template-columns: 1fr;
  }
  .how__step h3,
  .how__step p {
    grid-column: 1;
  }
}

.codeblock {
  grid-column: 2;
  margin: 0.5rem 0 0;
  padding: 1.1rem 1.2rem;
  background: color-mix(in oklch, var(--paper-2) 85%, transparent);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-m);
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-x: auto;
}
.codeblock--out {
  border-left-color: var(--stamp);
}
.codeblock code {
  background: transparent;
  border: 0;
  padding: 0;
  font: inherit;
}
.codeblock__pii {
  background: oklch(0.92 0.04 80 / 0.5);
  padding: 0 0.2em;
  outline: 1px dashed oklch(0.55 0.05 80 / 0.6);
  outline-offset: 0;
}
@media (max-width: 700px) {
  .codeblock {
    grid-column: 1;
  }
}

.bar {
  background: var(--bar);
  color: var(--bar-ink);
  padding: 0.05em 0.4em;
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 0.92em;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.bar--inline {
  display: inline-block;
}

.how__detectors {
  grid-column: 2;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0.5rem;
  align-items: stretch;
  margin-top: 0.25rem;
}
.detector {
  border: 1px solid var(--hairline);
  background: color-mix(in oklch, var(--paper-2) 70%, transparent);
  padding: 1rem 1.1rem;
  display: grid;
  gap: 0.25rem;
  align-content: center;
}
.detector__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--stamp);
}
.detector__name {
  font-family: var(--font-mono);
  font-size: var(--fs-l);
  color: var(--ink);
  font-weight: 600;
}
.detector__sub {
  font-size: var(--fs-s);
  color: var(--ink-soft);
}
.detector__merge {
  align-self: center;
  display: grid;
  place-items: center;
  position: relative;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  padding: 0 1rem;
}
.detector__merge::before,
.detector__merge::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 0.75rem;
  height: 1px;
  background: var(--ink-soft);
}
.detector__merge::before {
  left: -0.25rem;
}
.detector__merge::after {
  right: -0.25rem;
}
@media (max-width: 800px) {
  .how__detectors {
    grid-template-columns: 1fr;
  }
  .detector__merge {
    transform: rotate(90deg);
    padding: 0.5rem 0;
  }
}
@media (max-width: 700px) {
  .how__detectors {
    grid-column: 1;
  }
}

/* ================================================================== DEMO */
.section--demo {
  background: var(--paper-2);
  border-block: 1px solid var(--rule);
}
.demo {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
@media (min-width: 900px) {
  .demo {
    grid-template-columns: 1fr 1fr;
  }
}
.demo__panel {
  background: var(--paper);
  padding: clamp(1.25rem, 2vw, 1.75rem);
  display: grid;
  gap: 0.75rem;
  align-content: start;
}
.demo__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--hairline);
}
.demo__role {
  color: var(--ink);
  font-weight: 600;
}
.demo__counter,
.demo__found {
  color: var(--ink-soft);
}
.demo__found {
  color: var(--stamp);
  font-weight: 600;
}
.demo__label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

#demo-input {
  resize: vertical;
  min-height: 280px;
  width: 100%;
  padding: 1rem 1.1rem;
  font: 500 var(--fs-m) / 1.6 var(--font-mono);
  background: color-mix(in oklch, var(--paper-2) 80%, transparent);
  border: 1px solid var(--hairline);
  color: var(--ink);
  border-radius: 0;
  outline: none;
  transition: border-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}
#demo-input:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--ink) 14%, transparent);
}

.demo__hint {
  font-size: var(--fs-s);
  color: var(--ink-soft);
  margin: 0;
}

.demo__seeds {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.25rem;
}
.seed {
  font: 500 var(--fs-s) / 1 var(--font-body);
  padding: 0.5rem 0.8rem;
  background: transparent;
  color: var(--ink-2);
  border: 1px solid var(--hairline);
  cursor: pointer;
  border-radius: 999px;
  transition: border-color 0.2s var(--ease-out), color 0.2s var(--ease-out),
    background 0.2s var(--ease-out);
}
.seed:hover {
  border-color: var(--ink);
  color: var(--ink);
  background: var(--paper-2);
}
.seed[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.demo__output {
  min-height: 280px;
  padding: 1rem 1.1rem;
  background: color-mix(in oklch, var(--paper-2) 80%, transparent);
  border: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: var(--fs-m);
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.demo__output:empty::before {
  content: "Output will appear here. Try a seed input on the left.";
  color: var(--ink-soft);
  font-style: italic;
}
.demo__output .bar {
  white-space: normal;
}

.demo__legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.4rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
}
.demo__legend li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.6rem 0.35rem 0.45rem;
  border: 1px solid var(--hairline);
}
.demo__legend li::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--bar);
  display: inline-block;
}
.demo__legend li b {
  font-weight: 600;
  color: var(--ink);
}
.demo__legend li span {
  color: var(--ink-soft);
}

/* ============================================================ SURFACES */
.surfaces {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
@media (min-width: 1000px) {
  .surfaces {
    grid-template-columns: 1fr 1fr;
  }
}
.surface {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  display: grid;
  gap: 1.5rem;
}
.surface > header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1.25rem;
  align-items: baseline;
}
.surface__num {
  grid-row: span 2;
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
  font-weight: 400;
  color: var(--stamp);
  font-style: italic;
}
.surface > header h3 {
  margin: 0;
  font-size: var(--fs-3xl);
}
.surface__sub {
  margin: 0;
  color: var(--ink-2);
  grid-column: 2;
}

.surface__body {
  display: grid;
  gap: 1.25rem;
}

.hosts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.host {
  font: 500 var(--fs-s) / 1 var(--font-body);
  padding: 0.5rem 0.8rem;
  background: var(--paper);
  border: 1px solid var(--hairline);
  color: var(--ink-2);
}

.surface__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}
.surface__points li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--ink-2);
  line-height: 1.55;
}
.surface__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 0.8rem;
  height: 1px;
  background: var(--stamp);
}

/* Mock browser composer */
.mock {
  background: var(--paper);
  border: 1px solid var(--hairline);
  font-size: var(--fs-m);
  font-family: var(--font-mono);
  line-height: 1.65;
}
.mock__chrome {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--hairline);
  background: var(--paper-2);
}
.mock__dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--ink-soft);
  opacity: 0.5;
}
.mock__url {
  margin-left: 0.5rem;
  font-size: var(--fs-xs);
  color: var(--ink-soft);
  letter-spacing: 0.06em;
}
.mock__composer {
  padding: 1rem 1.1rem;
}
.mock__composer p {
  margin: 0 0 0.85rem;
  font-family: var(--font-body);
  font-size: var(--fs-m);
  color: var(--ink);
  max-width: none;
}
.mock__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--hairline);
}
.mock__btn {
  background: var(--ink);
  color: var(--paper);
  border: 0;
  padding: 0.55rem 0.95rem;
  font: 600 var(--fs-s) / 1 var(--font-body);
  cursor: default;
}
.mock__hint {
  font-size: var(--fs-xs);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}
.muted {
  color: var(--ink-soft);
}

/* PDF mock */
.mock--pdf {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  border: 1px solid var(--hairline);
}
@media (max-width: 600px) {
  .mock--pdf {
    grid-template-columns: 1fr;
  }
}
.mock__doc {
  padding: 1.2rem 1.4rem;
  background: var(--paper);
  border-right: 1px solid var(--hairline);
  font-family: var(--font-display);
  font-size: var(--fs-m);
  line-height: 1.6;
  position: relative;
}
.mock__doc::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px dashed var(--hairline);
  pointer-events: none;
}
.mock__doc-h {
  font-size: var(--fs-xl);
  font-weight: 600;
  margin: 0 0 0.5rem;
  letter-spacing: -0.005em;
}
.mock__doc p {
  font-family: var(--font-body);
  margin: 0 0 0.75rem;
  font-size: var(--fs-m);
}
.mock__doc-foot {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--ink-soft);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-top: 1rem;
}
.mock__findings {
  list-style: none;
  margin: 0;
  padding: 1.2rem;
  display: grid;
  gap: 0.65rem;
  font-family: var(--font-mono);
  font-size: var(--fs-s);
  background: var(--paper-2);
}
.mock__findings li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.6rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--hairline);
}
.mock__findings li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.mock__findings input[type="checkbox"] {
  accent-color: var(--ink);
  width: 14px;
  height: 14px;
}
.mock__findings .muted {
  font-size: var(--fs-xs);
}

/* ============================================================ COVERAGE */
.section--coverage {
  background: var(--paper);
}
.ledger {
  border: 1px solid var(--rule);
  background: var(--paper-2);
  padding: 0;
  overflow: hidden;
}
.ledger__table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-m);
  font-family: var(--font-body);
}
.ledger__table thead th {
  text-align: left;
  padding: 0.85rem 1rem;
  font: 600 var(--fs-xs) / 1 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.ledger__table tbody th,
.ledger__table tbody td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
  text-align: left;
}
.ledger__table tbody tr:last-child th,
.ledger__table tbody tr:last-child td {
  border-bottom: 0;
}
.ledger__table tbody th {
  font-weight: 500;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: var(--fs-l);
  letter-spacing: -0.005em;
}
.codeline {
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--ink-2);
  padding: 0.1em 0.35em;
  background: color-mix(in oklch, var(--paper) 85%, transparent);
  border: 1px solid var(--hairline);
  display: inline-block;
}
.tag {
  font-family: var(--font-mono);
  font-size: var(--fs-s);
  background: var(--bar);
  color: var(--bar-ink);
  border: 0;
  padding: 0.18em 0.45em;
  margin-right: 0.35em;
  white-space: nowrap;
}

@media (max-width: 740px) {
  .ledger__table thead {
    display: none;
  }
  .ledger__table tbody tr {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.25rem;
    padding: 1rem;
    border-bottom: 1px solid var(--rule);
  }
  .ledger__table tbody tr:last-child {
    border-bottom: 0;
  }
  .ledger__table tbody th,
  .ledger__table tbody td {
    padding: 0;
    border: 0;
  }
  .ledger__table tbody th {
    font-size: var(--fs-l);
  }
}

.ledger__note {
  margin: 0;
  padding: 1rem 1.2rem;
  background: var(--paper);
  border-top: 1px solid var(--rule);
  color: var(--ink-soft);
  font-size: var(--fs-s);
}

/* =============================================================== TRUST */
.section--trust {
  background: var(--paper-2);
  border-block: 1px solid var(--rule);
}
.trust {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: start;
}
@media (min-width: 1000px) {
  .trust {
    grid-template-columns: 1.3fr 1fr;
  }
}

.dataflow {
  margin: 0;
  display: grid;
  gap: 1.25rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: clamp(1.25rem, 2.5vw, 2rem);
}
.dataflow__lane {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0.6rem;
}
.dataflow__lane--blocked {
  position: relative;
  padding: 1.25rem 1rem 1.5rem;
  border-top: 1px dashed var(--hairline);
  margin-top: 0.5rem;
}
.dataflow__node {
  display: grid;
  gap: 0.15rem;
  padding: 0.85rem 0.95rem;
  background: var(--paper-2);
  border: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: var(--fs-s);
  flex: 1 1 0;
  min-width: 110px;
}
.dataflow__title {
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.04em;
}
.dataflow__sub {
  color: var(--ink-soft);
  font-size: var(--fs-xs);
}
.dataflow__node--ext {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.dataflow__node--ext .dataflow__title {
  color: var(--paper);
}
.dataflow__node--ext .dataflow__sub {
  color: color-mix(in oklch, var(--paper) 70%, transparent);
}
.dataflow__node--ghost {
  flex: 0 1 auto;
  padding: 0.5rem 0.75rem;
  background: transparent;
  color: var(--ink-soft);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  border-style: dashed;
}
.dataflow__arrow {
  flex: 0 0 2.4rem;
  align-self: center;
  position: relative;
  height: 1px;
}
.dataflow__arrow span {
  position: absolute;
  inset: 0;
  background: var(--ink);
}
.dataflow__arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 8px;
  height: 8px;
  border-top: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
  transform: translate(0, -50%) rotate(45deg);
}
.dataflow__arrow--back::after {
  right: auto;
  left: 0;
  transform: translate(0, -50%) rotate(225deg);
}
.dataflow__strike {
  position: absolute;
  inset: 1.4rem 0.5rem auto 0.5rem;
  height: 2px;
  background: var(--stamp);
  transform: rotate(-3deg);
  transform-origin: left center;
  pointer-events: none;
}
.dataflow__caption {
  width: 100%;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stamp);
  margin-top: 0.5rem;
}

.trust__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}
.trust__points h3 {
  font-size: var(--fs-3xl);
  margin: 0 0 0.4rem;
  letter-spacing: -0.012em;
}
.trust__points p {
  margin: 0;
  color: var(--ink-2);
}
.trust__points li {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--hairline);
}
.trust__points li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

/* ============================================================== INSTALL */
.section--install {
  background: var(--paper);
  padding-bottom: clamp(5rem, 8vw, 8rem);
}
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(1.25rem, 2vw, 1.75rem);
  margin-bottom: 2.5rem;
}
@media (min-width: 900px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}
.steps li {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 1.5rem;
  display: grid;
  gap: 0.75rem;
  align-content: start;
}
.steps__num {
  font-family: var(--font-mono);
  font-size: var(--fs-l);
  font-weight: 600;
  color: var(--stamp);
  letter-spacing: 0.06em;
}
.steps li h3 {
  font-size: var(--fs-3xl);
  margin: 0;
}
.steps li p {
  margin: 0;
  color: var(--ink-2);
}
.steps .codeblock {
  margin: 0;
  grid-column: auto;
  border-left-color: var(--stamp);
  font-size: var(--fs-s);
}

/* ============================================================== FOOTER */
.footer {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(3rem, 5vw, 4.5rem);
  position: relative;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
}
@media (min-width: 800px) {
  .footer__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) auto;
  }
}
.footer__brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
}
.footer__tag {
  color: color-mix(in oklch, var(--paper) 70%, transparent);
  margin: 0;
  max-width: 38ch;
}
.footer__h {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: var(--fs-xs);
  color: color-mix(in oklch, var(--paper) 60%, transparent);
  margin: 0 0 0.75rem;
}
.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}
.footer ul a {
  color: color-mix(in oklch, var(--paper) 80%, transparent);
  text-decoration: none;
  font-size: var(--fs-m);
}
.footer ul a:hover {
  color: var(--paper);
}
.footer__stamp {
  align-self: end;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: color-mix(in oklch, var(--paper) 60%, transparent);
}

/* =================================================== Reveal-on-scroll fx */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s var(--ease-out-quart), transform 0.8s var(--ease-out-quart);
}
[data-reveal][data-revealed="true"] {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ========================================================== Legal / policy */
.legal-page .masthead__inner {
  grid-template-columns: auto 1fr auto;
}

.legal {
  padding-block: clamp(3rem, 6vw, 5rem) clamp(4rem, 8vw, 6rem);
}

.legal__inner {
  width: min(52rem, 100% - var(--gutter) * 2);
  margin-inline: auto;
}

.legal__head {
  margin-bottom: clamp(2rem, 4vw, 3rem);
  padding-bottom: clamp(1.5rem, 3vw, 2rem);
  border-bottom: 1px solid var(--hairline);
}

.legal__title {
  font-size: var(--fs-4xl);
  max-width: none;
}

.legal__meta {
  margin: 0.75rem 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-s);
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.legal__block {
  margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
}

.legal__block h2 {
  font-size: var(--fs-3xl);
  margin-bottom: 0.65em;
}

.legal__block--summary {
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  background: var(--paper-2);
  border: 1px solid var(--hairline);
  border-radius: 4px;
}

.legal__block--summary p:last-child {
  margin-bottom: 0;
}

.legal__block ul {
  margin: 0;
  padding-left: 1.35em;
  max-width: 68ch;
}

.legal__block li + li {
  margin-top: 0.65em;
}

.legal__block li::marker {
  color: var(--ink-soft);
}

.legal__back {
  margin-top: clamp(2.5rem, 4vw, 3.5rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--hairline);
  font-size: var(--fs-m);
}

.legal__back a {
  text-decoration: none;
  font-weight: 500;
}

.footer ul a[aria-current="page"] {
  color: var(--paper);
  text-decoration: underline;
  text-underline-offset: 3px;
}