/* CreatorRetention design system
   Palette: warm studio charcoal + recording-light amber + paper
   Type: Bricolage Grotesque (display) / Schibsted Grotesk (body) / Spline Sans Mono (labels, numbers)
   Elevation language: hairline borders. No gradients, no glows, no shadows except overlays. */

:root {
  --ink: #191613;
  --ink-2: #211d18;
  --line: #3a332a;
  --line-soft: #2b2620;
  --text: #efe7da;
  --muted: #afa492;
  --bar: #4a4136;
  --amber: #f0a32f;
  --amber-press: #d98f1c;
  --paper: #f1eade;
  --paper-line: #d9cdba;
  --paper-ink: #241f1a;
  --paper-muted: #6e6353;
  --amber-ink: #8a5a10;

  --font-display: "Bricolage Grotesque", "Avenir Next", sans-serif;
  --font-body: "Schibsted Grotesk", "Helvetica Neue", sans-serif;
  --font-mono: "Spline Sans Mono", "SF Mono", monospace;

  --s1: 0.25rem; --s2: 0.5rem; --s3: 0.75rem; --s4: 1rem;
  --s6: 1.5rem; --s8: 2rem; --s12: 3rem; --s16: 4rem; --s24: 6rem;

  --radius: 6px;
  --container: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--s6); }
.narrow { max-width: 46rem; }

/* ---------- type ---------- */
h1, h2, h3 { margin: 0; }

.display {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 5.5vw + 1rem, 4.25rem);
  line-height: 1.03;
  letter-spacing: -0.025em;
}

.h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.65rem, 2.4vw + 0.6rem, 2.4rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
}

.h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.2rem;
  line-height: 1.35;
}

p { margin: 0; }
.lead { font-size: 1.2rem; line-height: 1.55; }
.muted { color: var(--muted); }
.small { font-size: 0.9375rem; }
.measure { max-width: 62ch; }

.label {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--amber);
}

.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

a { color: inherit; }

/* ---------- rec dot ---------- */
.dot {
  display: inline-block;
  width: 0.5em; height: 0.5em;
  border-radius: 50%;
  background: var(--amber);
  vertical-align: 0.08em;
}
.dot--live { animation: recpulse 2.8s ease-in-out infinite alternate; }
@keyframes recpulse { from { opacity: 1; } to { opacity: 0.45; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
  background: var(--amber);
  border: 0;
  border-radius: 999px;
  padding: 0.85rem 1.9rem;
  text-decoration: none;
  transition: background-color 150ms ease;
}
.btn:hover { background: var(--amber-press); }
.btn--sm { padding: 0.55rem 1.25rem; font-size: 0.9375rem; }

a:focus-visible, .btn:focus-visible, summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 2px;
}
.btn:focus-visible { border-radius: 999px; }

/* ---------- header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 50;
  background: var(--ink);
  border-bottom: 1px solid var(--line-soft);
  isolation: isolate;
}
.site-header .container {
  height: 4rem;
  display: flex; align-items: center; justify-content: space-between; gap: var(--s6);
}
.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 0.45em;
}
.site-nav { display: flex; gap: var(--s8); }
.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 150ms ease;
}
.site-nav a:hover { color: var(--text); }
@media (max-width: 860px) { .site-nav { display: none; } }

/* ---------- sections ---------- */
.section { padding: var(--s24) 0; border-top: 1px solid var(--line-soft); }
.section--flush { padding-bottom: 0; }
.eyebrow { display: flex; align-items: center; gap: 0.6em; margin-bottom: var(--s6); }

/* hero */
.hero { padding: 10.5rem 0 0; }
.hero .lead { margin-top: var(--s8); }
.hero-cta { margin-top: var(--s12); display: flex; flex-wrap: wrap; align-items: center; gap: var(--s6); }

/* leak strip (signature) */
.strip { margin-top: var(--s16); }
.strip svg { display: block; width: 100%; height: auto; }
.strip rect { fill: var(--bar); }
.strip rect.lk { fill: var(--amber); animation: leakpulse 3.2s ease-in-out infinite alternate; }
.strip line { stroke: var(--line); stroke-width: 1; }
@keyframes leakpulse { from { opacity: 1; } to { opacity: 0.5; } }
.strip-caption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--muted);
  padding: var(--s3) 0 var(--s8);
}
.strip-caption .amber { color: var(--amber); }

/* ledger rows (problem, why-us) */
.ledger { margin-top: var(--s12); border-top: 1px solid var(--line); }
.ledger-row {
  display: grid;
  grid-template-columns: 13rem 1fr;
  gap: var(--s6);
  padding: var(--s8) 0;
  border-bottom: 1px solid var(--line);
}
.ledger-row .h3 { margin-bottom: var(--s2); }
@media (max-width: 720px) {
  .ledger-row { grid-template-columns: 1fr; gap: var(--s3); }
}

/* engine columns */
.cols3 { margin-top: var(--s12); display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s12); }
.col-rule { border-top: 2px solid var(--amber); padding-top: var(--s6); }
.col-rule .h3 { margin-bottom: var(--s2); }
@media (max-width: 860px) { .cols3 { grid-template-columns: 1fr; gap: var(--s8); } }

/* install list */
.install { margin-top: var(--s12); display: grid; grid-template-columns: 1fr 1fr; gap: var(--s8) var(--s16); }
.install-item { display: grid; grid-template-columns: auto 1fr; gap: var(--s4); }
.sq { width: 8px; height: 8px; background: var(--amber); margin-top: 0.55em; }
.install-item strong { font-weight: 600; }
@media (max-width: 860px) { .install { grid-template-columns: 1fr; } }

/* steps */
.steps { margin-top: var(--s12); display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s8); }
.step { border-top: 1px solid var(--line); padding-top: var(--s6); }
.step .stepnum {
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.13em; color: var(--amber);
}
.step .h3 { margin: var(--s3) 0 var(--s2); }
@media (max-width: 720px) { .steps { grid-template-columns: 1fr; } }

/* comparison table */
.vs-wrap { margin-top: var(--s12); overflow-x: auto; }
table.vs { width: 100%; min-width: 640px; border-collapse: collapse; font-size: 0.9375rem; }
table.vs th, table.vs td { padding: var(--s4) var(--s4); border-bottom: 1px solid var(--line); text-align: center; }
table.vs th { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
table.vs th.us { color: var(--amber); }
table.vs td:first-child, table.vs th:first-child { text-align: left; padding-left: 0; }
table.vs td.us { border-left: 1px solid var(--line); border-right: 1px solid var(--line); font-weight: 600; color: var(--amber); }
table.vs td { color: var(--muted); }
table.vs td:first-child { color: var(--text); }

/* why-us stat band */
.why-stats { margin-top: var(--s8); display: flex; flex-wrap: wrap; gap: var(--s6) var(--s16); }
.why-stats .num { font-size: clamp(2rem, 3.2vw, 2.8rem); font-weight: 500; line-height: 1.1; }
.why-stats .small { margin-top: var(--s1); }

/* proof cards */
.proof { margin-top: var(--s12); display: grid; grid-template-columns: 1fr 1fr; gap: var(--s6); }
.proof-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  padding: var(--s8);
  text-decoration: none;
  transition: border-color 150ms ease;
}
a.proof-card:hover { border-color: var(--amber); }
.proof-card .label { display: block; margin-bottom: var(--s4); }
.proof-card .h3 { margin-bottom: var(--s3); }
.readmore { color: var(--amber); font-weight: 600; }
@media (max-width: 860px) { .proof { grid-template-columns: 1fr; } }

/* paper band (guarantee / numbers) */
.paper {
  background: var(--paper);
  color: var(--paper-ink);
  padding: var(--s24) 0;
}
.paper .label { color: var(--amber-ink); }
.paper .muted { color: var(--paper-muted); }

/* fit lists */
.fit { margin-top: var(--s12); display: grid; grid-template-columns: 1fr 1fr; gap: var(--s16); }
.fit ul { list-style: none; margin: var(--s6) 0 0; padding: 0; display: grid; gap: var(--s4); }
.fit li { position: relative; padding-left: 1.6rem; }
.fit li::before { position: absolute; left: 0; top: 0; }
.fit .yes li::before { content: "✓"; color: var(--amber); font-weight: 700; }
.fit .no li::before { content: "✕"; color: var(--muted); }
.fit .no { color: var(--muted); }
@media (max-width: 720px) { .fit { grid-template-columns: 1fr; gap: var(--s8); } }

/* faq */
.faq { margin-top: var(--s12); border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: baseline; gap: var(--s6);
  padding: var(--s6) 0;
  font-weight: 600; font-size: 1.05rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq .chev {
  font-family: var(--font-mono); color: var(--amber);
  transition: transform 150ms ease;
  flex: none;
}
.faq details[open] .chev { transform: rotate(45deg); }
.faq details p { padding: 0 0 var(--s6); max-width: 60ch; }

/* final cta */
.final { padding: var(--s24) 0 var(--s16); }
.final .lead { margin-top: var(--s6); }
.final .btn { margin-top: var(--s8); }

/* footer */
.site-footer { border-top: 1px solid var(--line-soft); }
.site-footer .container {
  padding-top: var(--s8); padding-bottom: var(--s8);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--s4);
  font-size: 0.9375rem; color: var(--muted);
}
.site-footer a { color: var(--muted); text-decoration: none; transition: color 150ms ease; }
.site-footer a:hover { color: var(--text); }
.site-footer .links { display: flex; gap: var(--s6); }

/* article (teardown, legal) */
.article { padding: 9.5rem 0 var(--s16); }
.article .display { font-size: clamp(2.1rem, 4vw + 0.8rem, 3.4rem); }
.article-body { margin-top: var(--s12); display: grid; gap: var(--s12); }
.article-body h2 { margin-bottom: var(--s4); }
.article-body p + p { margin-top: var(--s4); }
.callout {
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  background: var(--ink-2);
  padding: var(--s6);
  font-size: 0.9375rem;
}
.callout ul { margin: var(--s3) 0 0; padding-left: 1.1rem; }
.callout li + li { margin-top: var(--s2); }

.statgrid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s6);
  text-align: center;
}
.statgrid .num { font-size: clamp(1.5rem, 2.6vw, 2.2rem); font-weight: 500; color: var(--paper-ink); }
.statgrid .small { color: var(--paper-muted); }
@media (max-width: 720px) { .statgrid { grid-template-columns: repeat(2, 1fr); } }

/* legal pages */
.legal { padding: 9.5rem 0 var(--s16); max-width: 44rem; }
.legal h1 { margin-bottom: var(--s2); }
.legal p + p { margin-top: var(--s4); }
.legal a { color: var(--amber); text-decoration: none; }

@media (max-width: 640px) {
  .display br { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .dot--live, .strip rect.lk { animation: none; }
  .btn, .site-nav a, .proof-card, .faq .chev, .site-footer a { transition: none; }
}