/* sellmyproduct.ai — value proposition page.
   Tokens per docs/planning/ux-.../DESIGN.md. No css import, no webfonts, no external refs.
   Dark-native; light mode is a peer via prefers-color-scheme. */
/* x-build:2026-09-21T023304Z-606bedaeb4dd — stamped from the same token as the html, so a stylesheet
   response whose bytes lack the live build id proves a mixed or stale revision. */

:root {
  color-scheme: light dark;

  --bg-deep: #08090a;
  --bg: #0b0c0e;
  --surface: #121316;
  --surface-raised: #1a1c20;
  --border-subtle: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.08);
  --text: #f2f3f5;
  --text-secondary: #c9cdd4;
  --text-muted: #8b9099;
  --text-faint: #7e8187;
  --accent: #7170ff;
  --accent-strong: #5e6ad2;
  --accent-hover: #8080ff;
  --accent-ink: #ffffff;
  --signal-pos: #3ecf8e;
  --signal-neg: #e8875a;
  --focus: #9d9cff;
  --accent-tint: rgba(113, 112, 255, 0.05);
  --accent-edge: rgba(113, 112, 255, 0.32);
  --surface-tint: rgba(255, 255, 255, 0.02);
  --ghost: rgba(255, 255, 255, 0.05);
  --shadow-none: 0 0 0 1px rgba(255, 255, 255, 0.06);
  --header-bg: rgba(11, 12, 14, 0.92);

  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --r-micro: 3px;
  --r-sm: 5px;
  --r-md: 7px;
  --r-lg: 11px;
  --r-pill: 999px;

  --max-w: 68rem;
  --content-w: 46rem;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section: clamp(3.5rem, 8vw, 6.5rem);
  --stack: 0.875rem;
  --stack-loose: 1.75rem;

  --t-display-xl: clamp(2.1rem, 5.4vw, 3.5rem);
  --t-display: clamp(1.6rem, 3.2vw, 2.25rem);
  --t-heading: clamp(1.25rem, 2.2vw, 1.5rem);
  --track-display: -0.022em;
  --track-heading: -0.012em;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-deep: #ffffff;
    --bg: #fbfbfa;
    --surface: #ffffff;
    --surface-raised: #f3f4f5;
    --border-subtle: rgba(0, 0, 0, 0.08);
    --border: rgba(0, 0, 0, 0.13);
    --text: #14161a;
    --text-secondary: #3c4048;
    --text-muted: #5c616a;
    --text-faint: #6a6f78;
    --accent: #4f4ec9;
    --accent-strong: #4f4ec9;
    --accent-hover: #3d3cb0;
    --accent-ink: #ffffff;
    --signal-pos: #17805a;
    --signal-neg: #b85a2e;
    --focus: #4f4ec9;
    --accent-tint: rgba(79, 78, 201, 0.05);
    --accent-edge: rgba(79, 78, 201, 0.35);
    --surface-tint: rgba(0, 0, 0, 0.012);
    --ghost: rgba(0, 0, 0, 0.04);
    --shadow-none: 0 0 0 1px rgba(0, 0, 0, 0.09);
    --header-bg: rgba(251, 251, 250, 0.92);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
}

.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter); }
.prose { max-width: var(--content-w); }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--focus); outline-offset: 2px; border-radius: var(--r-micro);
}

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 10;
  background: var(--accent-strong); color: var(--accent-ink);
  padding: 0.6rem 1rem; border-radius: 0 0 var(--r-sm) 0; font-size: 0.9rem;
}
.skip:focus { left: 0; }

/* ── header ─────────────────────────────────────────────── */
.masthead {
  position: sticky; top: 0; z-index: 5;
  background: var(--header-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-subtle);
}
.masthead .wrap {
  display: flex; align-items: center; gap: 1rem;
  min-height: 3.5rem; flex-wrap: wrap;
}
.brand {
  font-family: var(--mono); font-size: 0.8125rem; letter-spacing: 0.02em;
  color: var(--text); text-decoration: none; font-weight: 500;
  display: inline-flex; align-items: center; gap: 0.5rem; min-height: 44px;
}
.brand:hover { color: var(--text); text-decoration: none; }
.masthead nav { margin-left: auto; display: flex; align-items: center; gap: 0.25rem; flex-wrap: wrap; }
.masthead nav a {
  color: var(--text-secondary); text-decoration: none;
  font-size: 0.9375rem; padding: 0.35rem 0.6rem; min-height: 44px;
  display: inline-flex; align-items: center; border-radius: var(--r-sm);
  transition: background-color 120ms ease, color 120ms ease;
}
.masthead nav a:hover { color: var(--text); background: var(--ghost); text-decoration: none; }

/* ── hero ───────────────────────────────────────────────── */
.hero {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border-subtle);
  padding: clamp(3rem, 9vw, 5.5rem) 0 clamp(2.5rem, 6vw, 4rem);
}
.eyebrow {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-muted); margin: 0 0 1.25rem;
}
h1 {
  margin: 0 0 1.1rem; max-width: 22ch;
  font-size: var(--t-display-xl); font-weight: 600;
  letter-spacing: var(--track-display); line-height: 1.06;
  color: var(--text);
}
.lede { margin: 0 0 1.75rem; max-width: 56ch; font-size: 1.125rem; color: var(--text-secondary); }
.lede strong { color: var(--text); font-weight: 600; }

.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; margin-bottom: 1.25rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0.7rem 1.15rem; border-radius: var(--r-sm);
  border: 1px solid transparent; font: inherit; font-size: 1rem; font-weight: 500;
  cursor: pointer; text-decoration: none;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}
.btn-primary { background: var(--accent-strong); color: var(--accent-ink); border-color: var(--accent-strong); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text-secondary); border-color: var(--border); }
.btn-ghost:hover { background: var(--ghost); color: var(--text); text-decoration: none; }
.btn-link { background: none; border: none; padding: 0.7rem 0; color: var(--accent); font-weight: 500; }
.btn-link:hover { color: var(--accent-hover); text-decoration: underline; }

.hero-note { margin: 0; font-size: 0.9375rem; color: var(--text-muted); max-width: 52ch; }
.hero-note b { color: var(--text-secondary); font-weight: 500; }

/* ── sections ───────────────────────────────────────────── */
main { display: block; }
section { padding: var(--section) 0 0; }
section > .wrap { scroll-margin-top: 4.5rem; }
section[id] { scroll-margin-top: 4.5rem; }

.section-head { margin-bottom: 2rem; max-width: var(--content-w); }
h2 {
  margin: 0 0 0.6rem; font-size: var(--t-display); font-weight: 600;
  letter-spacing: var(--track-heading); line-height: 1.2; max-width: 26ch;
}
.section-head p { margin: 0; color: var(--text-secondary); }
h3 { margin: 0 0 0.35rem; font-size: var(--t-heading); font-weight: 600; letter-spacing: var(--track-heading); line-height: 1.3; }
h4 { margin: 0 0 0.3rem; font-size: 1.0625rem; font-weight: 600; }
p { margin: 0 0 var(--stack); }
p:last-child { margin-bottom: 0; }

/* problem */
.failure { display: grid; gap: 1.25rem; margin: 0; padding: 0; list-style: none; }
.failure li { border-left: 2px solid var(--border); padding-left: 1.1rem; max-width: var(--content-w); }
.failure strong { color: var(--text); font-weight: 600; display: block; margin-bottom: 0.2rem; }
.failure span { color: var(--text-secondary); font-size: 0.9875rem; }

/* steps */
.steps { counter-reset: s; list-style: none; margin: 0; padding: 0; display: grid; gap: 1.5rem; }
@media (min-width: 60rem) { .steps { grid-template-columns: 1fr 1fr; gap: 1.75rem 2rem; } }
.steps > li {
  background: var(--surface-tint); border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg); padding: 1.5rem; position: relative;
}
.steps > li::before {
  counter-increment: s; content: "0" counter(s);
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.08em;
  color: var(--text-muted); display: block; margin-bottom: 0.6rem;
}
.steps p { color: var(--text-secondary); font-size: 0.9875rem; }
.pill {
  display: inline-block; font-family: var(--mono); font-size: 0.6875rem;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted);
  border: 1px solid var(--border); border-radius: var(--r-pill);
  padding: 0.12rem 0.5rem; margin-top: 0.6rem;
}

/* evidence */
.card {
  background: var(--surface-tint); border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg); padding: var(--stack-loose);
}
.card-featured { background: var(--accent-tint); border-color: var(--accent-edge); }
.bench { display: grid; gap: 1.5rem; }
@media (min-width: 52rem) { .bench { grid-template-columns: 1.4fr 1fr; gap: 2rem; } }
.bench-lede { color: var(--text-secondary); }
.bars { display: grid; gap: 1rem; margin: 0 0 1.25rem; }
.bar-row { display: grid; gap: 0.35rem; }
.bar-meta { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.bar-meta span:first-child { font-size: 0.9375rem; color: var(--text-secondary); }
.bar-meta b { font-family: var(--mono); font-size: 1.1rem; font-weight: 600; }
.bar-row--base b { color: var(--text); }
.bar-row--best b { color: var(--signal-pos); }
.bar { height: 8px; border-radius: var(--r-pill); background: var(--ghost); overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: var(--r-pill); }
.bar-row--base .bar > i { width: 81.3%; background: var(--text-muted); }
.bar-row--best .bar > i { width: 97.7%; background: var(--signal-pos); }

.negative { border-top: 1px solid var(--border-subtle); padding-top: 1rem; margin-top: 0.25rem; }
.negative b { color: var(--signal-neg); font-family: var(--mono); font-weight: 600; }
.provenance { font-family: var(--mono); font-size: 0.75rem; line-height: 1.6; color: var(--text-muted); margin: 0.9rem 0 0; }

.stats { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: 1.25rem; }
@media (min-width: 52rem) { .stats { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; } }
.stats li { border-top: 1px solid var(--border); padding-top: 0.9rem; }
.stats b { display: block; font-size: 1.35rem; font-weight: 600; letter-spacing: -0.01em; color: var(--text); }
.stats span { display: block; color: var(--text-secondary); font-size: 0.9375rem; margin-top: 0.25rem; }
.stats small { display: block; font-family: var(--mono); font-size: 0.6875rem; color: var(--text-muted); margin-top: 0.4rem; }

/* offer */
.tiers { display: grid; gap: 1.25rem; margin: 0 0 1.5rem; }
@media (min-width: 52rem) { .tiers { grid-template-columns: repeat(3, 1fr); gap: 1.25rem; } }
.tier { background: var(--surface-tint); border: 1px solid var(--border-subtle); border-radius: var(--r-lg); padding: 1.5rem; display: flex; flex-direction: column; }
.tier--featured { background: var(--accent-tint); border-color: var(--accent-edge); }
.tier h3 { margin-bottom: 0.15rem; }
.tier-tag { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }
.tier-price { font-family: var(--mono); font-size: 1.6rem; font-weight: 600; letter-spacing: -0.02em; margin: 0.5rem 0 0.15rem; }
.tier-price small { font-family: var(--sans); font-size: 0.8125rem; font-weight: 400; color: var(--text-muted); letter-spacing: 0; }
.tier-what { color: var(--text-secondary); font-size: 0.9375rem; margin: 0 0 1rem; }
.tier ul { list-style: none; margin: 0; padding: 0; font-size: 0.9375rem; color: var(--text-secondary); }
.tier ul li { padding: 0.32rem 0 0.32rem 1.1rem; position: relative; border-top: 1px solid var(--border-subtle); }
.tier ul li:first-child { border-top: none; }
.tier ul li::before { content: "·"; position: absolute; left: 0.25rem; color: var(--text-muted); }
.tier ul.not li::before { content: "×"; font-size: 0.85em; }
.tier .label { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin: 1rem 0 0.35rem; }
.terms { border-top: 1px solid var(--border); padding-top: 1rem; font-size: 0.9375rem; color: var(--text-secondary); max-width: var(--content-w); }
.terms b { color: var(--text); font-weight: 600; }

/* fit */
.fit { display: grid; gap: 1.25rem; }
@media (min-width: 52rem) { .fit { grid-template-columns: 1fr 1fr; gap: 2rem; } }
.fit ul { list-style: none; margin: 0; padding: 0; }
.fit li { padding: 0.5rem 0 0.5rem 1.4rem; position: relative; border-top: 1px solid var(--border-subtle); color: var(--text-secondary); font-size: 0.9875rem; }
.fit li:first-child { border-top: none; }
.fit-yes li::before { content: "✓"; position: absolute; left: 0; color: var(--signal-pos); }
.fit-no  li::before { content: "×"; position: absolute; left: 0; color: var(--text-muted); }

/* how + not-promised */
.cols { display: grid; gap: 1.5rem; }
@media (min-width: 52rem) { .cols { grid-template-columns: 1fr 1fr; gap: 2.5rem; } }
.deflist { margin: 0; }
.deflist dt { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin-top: 1rem; }
.deflist dt:first-child { margin-top: 0; }
.deflist dd { margin: 0.2rem 0 0; color: var(--text-secondary); font-size: 0.9875rem; }
.notpromised { list-style: none; margin: 0; padding: 0; }
.notpromised li { padding: 0.45rem 0; border-top: 1px solid var(--border-subtle); color: var(--text-secondary); font-size: 0.9875rem; }
.notpromised li:first-child { border-top: none; }
.notpromised b { color: var(--text); font-weight: 600; }

/* about */
.about p { color: var(--text-secondary); }
.about .sig { font-family: var(--mono); font-size: 0.8125rem; color: var(--text-muted); margin-top: 1.25rem; }
.about .sig a { font-family: var(--mono); }

/* faq */
.faq { border-top: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border-subtle); }
.faq summary {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  cursor: pointer; list-style: none; padding: 1rem 0; min-height: 44px;
  font-size: 1.0625rem; font-weight: 600; color: var(--text);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--mono); color: var(--text-muted); font-weight: 400; flex: 0 0 auto; }
.faq details[open] summary::after { content: "−"; }
.faq details > p { padding: 0 0 1.1rem; margin: 0; color: var(--text-secondary); max-width: var(--content-w); font-size: 0.9875rem; }

/* contact */
.contact { padding: var(--section) 0 0; }
.contact .card-featured { padding: clamp(1.5rem, 4vw, 2.5rem); }
.contact-grid { display: grid; gap: 2rem; }
@media (min-width: 56rem) { .contact-grid { grid-template-columns: 1fr 1fr; gap: 3rem; } }
.next-steps { list-style: none; margin: 1.25rem 0 0; padding: 0; }
.next-steps li { padding: 0.4rem 0 0.4rem 1.5rem; position: relative; color: var(--text-secondary); font-size: 0.9375rem; }
.next-steps li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-family: var(--mono); }
.field { margin-bottom: 0.9rem; }
.field label { display: block; font-size: 0.9375rem; font-weight: 500; margin-bottom: 0.3rem; }
.field .hint { font-size: 0.8125rem; color: var(--text-muted); margin: 0 0 0.35rem; }
input[type="text"], input[type="email"], select, textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--text);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: 0.65rem 0.8rem; min-height: 44px;
}
textarea { min-height: 5.5rem; resize: vertical; }
input::placeholder, textarea::placeholder { color: var(--text-muted); }
.form-note { font-size: 0.875rem; color: var(--text-secondary); margin: 0.9rem 0 0; }
.form-note code { font-family: var(--mono); font-size: 0.8125rem; color: var(--text); }
.btn-send { width: 100%; }
@media (min-width: 40rem) { .btn-send { width: auto; min-width: 12rem; } }

/* footer */
footer {
  margin-top: var(--section); border-top: 1px solid var(--border);
  padding: 2rem 0 3rem; font-size: 0.875rem; color: var(--text-faint);
}
.foot-grid { display: grid; gap: 1.5rem; }
@media (min-width: 52rem) { .foot-grid { grid-template-columns: 1.2fr 1fr 1fr; gap: 2rem; } }
footer h2 { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin: 0 0 0.6rem; font-weight: 500; }
footer p { margin: 0 0 0.35rem; }
footer a { color: var(--text-secondary); }
footer .legal { font-size: 0.8125rem; line-height: 1.65; }
footer .legal b { color: var(--text-secondary); font-weight: 500; }
footer .disclaimer { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border-subtle); max-width: 46rem; font-size: 0.8125rem; }

/* 404 */
.notfound { padding: clamp(3rem, 10vw, 6rem) 0; max-width: var(--content-w); }
.notfound h1 { margin-bottom: 0.75rem; }
.notfound p { color: var(--text-secondary); }

@media (prefers-reduced-motion: reduce) {
  .btn, .masthead nav a, a { transition: none; }
}

@media print {
  :root { --bg: #fff; --bg-deep: #fff; --text: #111; --text-secondary: #333; --text-muted: #555; --border: #ccc; --border-subtle: #ddd; --surface-tint: #fff; --surface: #fff; --accent: #2b2ab0; }
  .masthead { position: static; border-bottom: 1px solid #ccc; }
  .skip, .btn-ghost { display: none; }
  body { font-size: 11pt; line-height: 1.45; }
  section { padding-top: 1.5rem; page-break-inside: avoid; }
  a { color: #111; text-decoration: underline; }
}

@media (max-width: 37.5rem) {
  .tiers { display: grid; }
  .tier--featured { order: -1; }
  h1 { max-width: none; }
  .masthead nav a { font-size: 0.875rem; padding: 0.35rem 0.45rem; }
}