/* v51 — editorial hierarchy and mobile clarity, with v50's copy and base system intact.
   Homepage-only layer; versioned URL avoids the previous candidate's 24-hour CSS cache.
   DESIGN-v51.md records the scope, references and verification contract. */

.home-v51 {
  --s-section: 120px;
  --s-head: 44px;
  --col-gap: 32px;
}

/* A readable masthead. All five destinations remain visible on small screens. */
.home-v51 .nav { min-height: 92px; border-bottom: 1px solid var(--line); gap: 32px; }
.home-v51 .brand { font-size: 32px; }
.home-v51 .nav-links { gap: 24px; }
.home-v51 .nav-links a { display: inline-flex; align-items: center; min-height: 44px; }
.home-v51 .nav .btn { min-height: 44px; }
.home-v51 .skip { z-index: 50; }

/* The promise and the decision occupy one spread. Benefits are a quiet index beside it,
   not another full-width tier beneath the CTA. Source/reading order stays unchanged. */
.home-v51 .hero {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--col-gap);
  padding-top: 44px;
  padding-bottom: 0;
}
.home-v51 .hero > .kicker,
.home-v51 .hero > h1,
.home-v51 .hero-provenance { grid-column: 1 / -1; }
.home-v51 .hero > h1 { margin-bottom: 42px; }
.home-v51 .hero-row { grid-column: 1 / span 6; display: block; }
.home-v51 .hero-row .lede { max-width: none; font-size: 23px; color: var(--ink); }
.home-v51 .hero-ctas { margin-top: 24px; width: 100%; max-width: 358px; gap: 8px; }
.home-v51 .hero-ctas .btn { min-height: 56px; }
.home-v51 .cta-note { line-height: 1.6; }
.home-v51 .cta-watch { display: inline-flex; align-items: center; min-height: 44px; margin-top: 0; }
.home-v51 .highlights {
  grid-column: 8 / -1;
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 0;
  margin-top: 0;
}
.home-v51 .highlights li { padding: 15px 0; border-top-color: var(--line); grid-template-columns: 24px 1fr; }
.home-v51 .highlights li:first-child { border-top-color: var(--ink); }
.home-v51 .highlights li:last-child { padding-bottom: 0; }
.home-v51 .highlights strong { font-size: 18px; font-weight: 500; margin-bottom: 3px; }
.home-v51 .highlights p { font-size: 15px; }
.home-v51 .hero-provenance {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  padding: 23px 0;
  margin-top: 44px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.home-v51 .hero-provenance span { padding: 0 24px; margin: 0; }
.home-v51 .hero-provenance span:first-child { padding-left: 0; }
.home-v51 .hero-provenance span:last-child { padding-right: 0; }

/* Keep the numbered mechanism, but give the explanatory text a comfortable reading size. */
.home-v51 .loop-head { margin-bottom: 52px; align-items: start; }
.home-v51 .loop-head .lede { padding-top: 6px; font-size: 18px; line-height: 1.6; }
.home-v51 .loop small { font-size: 16px; line-height: 1.6; }
.home-v51 .loop strong { font-size: 25px; line-height: 1.16; }
.home-v51 .loop-proof { padding-top: 24px; padding-bottom: 8px; }
.home-v51 .loop-proof small,
.home-v51 .loop-disclaimer { font-size: 14px; line-height: 1.5; }
.home-v51 .loop-proof:hover strong { color: var(--ink); } /* Evidence is text, not a false link. */

/* Evidence: numbers are readable without zooming into the real, uncropped dashboard. */
.home-v51 #work .section-head { margin-bottom: 36px; padding-bottom: 24px; }
.home-v51 #work h2 { font-size: clamp(44px, 5.6vw, 72px); }
.home-v51 .shots-wall { gap: 52px var(--col-gap); }
.home-v51 .shot { border-radius: 8px; }
.home-v51 .shot-link { cursor: zoom-in; }
.home-v51 .shot-link:focus-visible { outline-offset: 5px; }
.home-v51 .shot-cap { gap: 6px; padding-top: 20px; }
.home-v51 .shots-wall .shot-cap .who { font-size: clamp(24px, 2.3vw, 30px); line-height: 1.12; }
.home-v51 .spotify-link { display: inline-flex; align-items: center; min-height: 36px; }
.home-v51 .shot-figures {
  display: grid;
  grid-template-columns: 0.85fr 1.3fr 0.85fr;
  width: 100%;
  gap: 16px;
  margin-top: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.home-v51 .shot-fig { font-size: 12px; line-height: 1.5; }
.home-v51 .shot-fig b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(32px, 3.2vw, 44px);
  font-weight: 440;
  font-variant-numeric: lining-nums tabular-nums;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin-bottom: 4px;
}
.home-v51 .shot-fig:first-child b { color: var(--accent-text); }
.home-v51 .shots-wall .shot-featured { padding-bottom: 52px; }
.home-v51 .shots-wall .shot-featured .shot-cap { padding-left: 12px; }
.home-v51 .shots-wall .shot-featured .shot-figures { grid-template-columns: 1fr 1fr; gap: 22px 16px; }
.home-v51 .shots-wall .shot-featured .shot-fig:first-child { grid-column: 1 / -1; }
.home-v51 .shots-wall .shot-featured .shot-fig:first-child b { font-size: clamp(64px, 6.8vw, 88px); }
.home-v51 .shots-wall .shot-featured .shot-cap .who { font-size: clamp(30px, 3vw, 40px); }
.home-v51 .videos { margin-top: 64px; }
.home-v51 .ledger { margin-top: 64px; border-top: 1px solid var(--ink); }
.home-v51 .ledger-row { padding: 28px 0; }
.home-v51 .ledger-row .name { font-size: 22px; line-height: 1.2; }
.home-v51 .ledger-row .result { font-size: 17px; line-height: 1.6; }
.home-v51 .ledger-row .tag { font-size: 11px; line-height: 1.6; }

/* A deliberate method spread. Reserve room for every panel so auto-advance never moves
   the video or the reader's place. Keyboard focus stops the existing timer in index.html. */
.home-v51 #track { padding-top: 104px; }
.home-v51 .track-name { max-width: 22ch; font-size: clamp(34px, 4.2vw, 52px); margin-bottom: 40px; }
.home-v51 .track-panels { min-height: 128px; }
.home-v51 .track-panel p { line-height: 1.6; }
.home-v51 .track-letters label span { font-size: 12px; }
.home-v51 .explainer { margin-top: 48px; align-items: center; }
.home-v51 .explainer h3 { font-size: clamp(28px, 3vw, 38px); }
.home-v51 .video-frame { border: 1px solid var(--line); border-radius: 8px; }

/* Comparison remains a real table, with the Virra answer given a quiet warm ground. */
.home-v51 .compare td.virra,
.home-v51 .compare .col-virra { background: var(--surface); padding-left: 24px; padding-right: 24px; }
.home-v51 .compare .col-virra { padding-top: 16px; }
.home-v51 .compare td { line-height: 1.6; }
.home-v51 .keep { grid-template-columns: 1fr; gap: 0; }
.home-v51 .keep-item { display: grid; grid-template-columns: 4fr 8fr; gap: 40px; padding: 26px 0; border-top-color: var(--line); }
.home-v51 .keep-item:first-child { border-top-color: var(--ink); }
.home-v51 .keep-item h3 { margin: 3px 0 0; font-size: 13px; }
.home-v51 .keep-item p { max-width: 62ch; font-size: 17px; line-height: 1.6; }
.home-v51 .guarantee .inner { padding-top: 104px; padding-bottom: 112px; }
.home-v51 .guarantee .btn { min-height: 56px; }
.home-v51 .guarantee :focus-visible { outline-color: var(--accent-soft); }

/* Clear separation between the next step and fit criteria; all wording is unchanged. */
.home-v51 #process { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); }
.home-v51 #process .section-head { grid-column: 1 / span 4; display: block; border: 0; margin: 0; padding: 0; }
.home-v51 #process .steps { grid-column: 6 / -1; }
.home-v51 .fit-grid { grid-column: 1 / -1; margin-top: 80px; }
.home-v51 .process-note { grid-column: 1 / -1; }
.home-v51 #faq { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); }
.home-v51 #faq .section-head { grid-column: 1 / span 3; display: block; border: 0; margin: 0; padding: 0; }
.home-v51 .faq-list { grid-column: 5 / -1; max-width: none; }
.home-v51 .faq-item:first-child { border-top-color: var(--ink); }
.home-v51 .faq-item summary { padding: 26px 0; font-size: 19px; line-height: 1.4; align-items: center; }
.home-v51 .faq-mark { flex: none; }
.home-v51 .faq-a { padding-bottom: 28px; line-height: 1.65; }
.home-v51 .book { padding-bottom: 104px; }
.home-v51 .book-inner { padding-top: 56px; }
.home-v51 .book-inner > * { min-width: 0; }
.home-v51 .book h2 { font-size: clamp(44px, 5.5vw, 70px); }
.home-v51 .book-cta { align-items: stretch; }
.home-v51 .book-cta .btn { min-height: 56px; white-space: normal; line-height: 1.3; }
.home-v51 footer { padding-bottom: 100px; }
.home-v51 .foot-about { max-width: 76ch; line-height: 1.65; margin-bottom: 28px; }
.home-v51 .foot-links a { display: inline-flex; align-items: center; min-height: 44px; }

/* The embedded chat retains its logic and copy. Dynamic viewport and 16px input type
   avoid mobile keyboard clipping / automatic focus zoom in browsers that support them. */
.home-v51 .vchat { right: max(20px, env(safe-area-inset-right)); bottom: max(20px, env(safe-area-inset-bottom)); }
.home-v51 .vchat-panel { height: min(560px, calc(100dvh - 40px)); }
.home-v51 .vchat-form input { font-size: 16px; }
.home-v51 .vchat-close { min-width: 44px; min-height: 44px; }

@media (max-width: 1100px) {
  .home-v51 .nav { gap: 20px; }
  .home-v51 .nav-links { gap: 16px; }
}
@media (max-width: 1024px) {
  .home-v51 { --s-section: 96px; --s-head: 36px; }
  .home-v51 .hero-row { grid-column: 1 / span 6; }
  .home-v51 .highlights { grid-column: 8 / -1; }
  .home-v51 .hero-row .lede { font-size: 21px; }
  .home-v51 .hero-provenance { font-size: 12px; }
  .home-v51 .loop-head { gap: 24px; }
  .home-v51 .loop-head .lede { max-width: 62ch; padding: 0; }
  .home-v51 .ledger-row .name { grid-column: 1 / span 4; }
  .home-v51 .ledger-row .result { grid-column: 5 / -1; }
  .home-v51 .ledger-row .tag { grid-column: 5 / -1; }
  .home-v51 .track-panels { min-height: 142px; }
  .home-v51 .compare tbody tr { padding: 24px 0; }
  .home-v51 .compare tbody th { font-size: 20px; margin-bottom: 16px; }
  .home-v51 .compare td { padding: 16px 20px; }
  .home-v51 .compare td.old { padding-top: 0; }
  .home-v51 .compare td::before { display: block; margin-bottom: 8px; font-size: 12px; }
  .home-v51 .compare td.virra { padding: 20px; }
  .home-v51 #process .section-head { grid-column: 1 / span 5; }
  .home-v51 #process .steps { grid-column: 6 / -1; }
  .home-v51 .book-cta { max-width: 400px; }
}
@media (max-width: 800px) {
  .home-v51 .nav { flex-wrap: wrap; gap: 8px 20px; padding-top: 16px; padding-bottom: 0; }
  .home-v51 .nav-cta { order: 2; margin-left: auto; }
  .home-v51 .nav-links { order: 3; flex: 1 1 100%; margin: 0; padding: 4px 0; border: 0; flex-wrap: wrap; gap: 0 22px; overflow: visible; }
  .home-v51 .nav-links a { font-size: 14px; }
  .home-v51 .hero { padding-top: 36px; }
  .home-v51 .hero > h1 { margin-bottom: 32px; }
  .home-v51 .hero-row { grid-column: 1 / -1; }
  .home-v51 .hero-row .lede { max-width: none; }
  .home-v51 .hero-ctas { max-width: 400px; }
  .home-v51 .highlights { grid-column: 1 / -1; margin-top: 36px; }
  .home-v51 .highlights li { padding: 16px 0; }
  .home-v51 .highlights p { font-size: 16px; }
  .home-v51 .hero-provenance { margin-top: 28px; }
  .home-v51 .loop-head { margin-bottom: 36px; }
  .home-v51 .loop strong { font-size: 24px; }
  .home-v51 .loop li { padding-bottom: 36px; }
  .home-v51 .mech-proof { margin-top: 32px; }
  .home-v51 .loop-proof { padding: 22px 0; }
  .home-v51 .loop-proof strong { max-width: 36ch; font-size: 24px; }
  .home-v51 .shots-wall .shot-featured .shot-cap { padding: 20px 0 0; }
  .home-v51 .shots-wall .shot-featured .shot-figures { grid-template-columns: 0.85fr 1.3fr 0.85fr; gap: 12px; }
  .home-v51 .shots-wall .shot-featured .shot-fig:first-child { grid-column: auto; }
  .home-v51 .shots-wall .shot-featured .shot-fig:first-child b { font-size: clamp(36px, 6vw, 48px); }
  .home-v51 .shots-wall .shot-featured .shot-fig b { font-size: clamp(36px, 6vw, 48px); }
  .home-v51 .ledger-row .name,
  .home-v51 .ledger-row .result,
  .home-v51 .ledger-row .tag { grid-column: 1 / -1; }
  .home-v51 .ledger-row { row-gap: 10px; }
  .home-v51 .keep-item { grid-template-columns: 1fr; gap: 12px; }
  .home-v51 .guarantee .inner { padding-top: 72px; padding-bottom: 80px; }
  .home-v51 #process .section-head,
  .home-v51 #process .steps,
  .home-v51 #faq .section-head,
  .home-v51 .faq-list { grid-column: 1 / -1; }
  .home-v51 #process .section-head,
  .home-v51 #faq .section-head { margin-bottom: 36px; }
  .home-v51 .fit-grid { margin-top: 56px; }
}
@media (max-width: 640px) {
  .home-v51 { --s-section: 76px; --s-head: 32px; --col-gap: 20px; }
  .home-v51 .nav-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 8px; }
  .home-v51 .nav-links a { white-space: normal; font-size: 13px; line-height: 1.3; }
  .home-v51 .hero > .kicker { font-size: 10px; letter-spacing: 0.1em; line-height: 1.65; max-width: 36ch; margin-bottom: 22px; }
  .home-v51 .h1-b { font-size: clamp(44px, 15.2vw, 86px); }
  .home-v51 .hero-row .lede { font-size: 20px; line-height: 1.45; }
  .home-v51 .hero-ctas { max-width: none; margin-top: 22px; }
  .home-v51 .hero-ctas .btn { min-height: 54px; }
  .home-v51 .highlights { margin-top: 28px; }
  .home-v51 .highlights strong { font-size: 17px; }
  .home-v51 .highlights p { font-size: 15px; }
  .home-v51 .hero-provenance { grid-template-columns: 0.9fr 1.2fr 0.9fr; font-size: 10px; line-height: 1.65; letter-spacing: 0; padding: 18px 0; }
  .home-v51 .hero-provenance span { padding: 0 10px; }
  .home-v51 .hero-provenance span:nth-child(2) { white-space: nowrap; }
  .home-v51 .loop-head .mech-name { font-size: clamp(32px, 8.8vw, 44px); line-height: 1.08; }
  .home-v51 .loop-head .lede { font-size: 17px; }
  .home-v51 .loop { --num: 60px; }
  .home-v51 .loop strong { font-size: 23px; }
  .home-v51 .loop small { font-size: 16px; }
  .home-v51 .shots-wall { gap: 44px; }
  .home-v51 .shots-wall .shot-featured { padding-bottom: 36px; }
  .home-v51 .shots-wall .shot-cap .who { font-size: 27px; }
  .home-v51 .shots-wall .shot-featured .shot-cap .who { font-size: 32px; }
  .home-v51 .shot-figures { gap: 10px; }
  .home-v51 .shot-fig { font-size: 11px; }
  .home-v51 .shot-fig b { font-size: 34px; }
  .home-v51 .spotify-link { min-height: 44px; }
  .home-v51 .videos { gap: 24px; margin-top: 44px; }
  .home-v51 .ledger { margin-top: 44px; }
  .home-v51 .ledger-row { padding: 24px 0; }
  .home-v51 .ledger-row .name { font-size: 22px; }
  .home-v51 .ledger-row .name small { margin-top: 4px; }
  .home-v51 .ledger-row .result { font-size: 16px; }
  .home-v51 #track { padding-top: 76px; }
  .home-v51 .track-tabs { margin-top: 0; }
  .home-v51 .track-name { font-size: 36px; margin-bottom: 28px; }
  .home-v51 .track-letters { column-gap: 10px; }
  .home-v51 .track-letters label { padding: 18px 0; }
  .home-v51 .track-letters label span { display: block; font-size: 10px; letter-spacing: 0; text-transform: none; min-height: 30px; }
  .home-v51 .track-panels { min-height: 164px; padding-top: 24px; }
  .home-v51 .track-panel strong { font-size: 28px; }
  .home-v51 .track-panel p { font-size: 16px; }
  .home-v51 .explainer { margin-top: 32px; gap: 24px; }
  .home-v51 .explainer h3 { max-width: 20ch; }
  .home-v51 .compare td.old { padding-left: 16px; padding-right: 16px; }
  .home-v51 .compare td.virra { padding: 16px; }
  .home-v51 .keep-item p { font-size: 16px; }
  .home-v51 .guarantee p { font-size: 17px; }
  .home-v51 .guarantee .inner { row-gap: 36px; }
  .home-v51 .guarantee .btn { width: 100%; min-height: 54px; }
  .home-v51 .cta-stack { align-items: stretch; }
  .home-v51 .fit-grid { row-gap: 32px; }
  .home-v51 .faq-item summary { font-size: 18px; gap: 16px; padding: 22px 0; }
  .home-v51 .book-inner { padding-top: 36px; row-gap: 32px; }
  .home-v51 .book { padding-bottom: 64px; }
  .home-v51 .book-cta { max-width: none; }
  .home-v51 .foot { gap: 12px; }
  .home-v51 .vchat { right: max(12px, env(safe-area-inset-right)); bottom: max(12px, env(safe-area-inset-bottom)); }
  .home-v51 .vchat-panel { height: min(600px, calc(100dvh - 24px - env(safe-area-inset-bottom))); }
}

/* Print and reduced motion preserve the full argument. No animated state can conceal it. */
@media (prefers-reduced-motion: reduce) {
  .home-v51 *, .home-v51 *::before, .home-v51 *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media print {
  .home-v51 .vchat, .home-v51 .video-frame, .home-v51 .nav-links, .home-v51 .nav-cta { display: none !important; }
  .home-v51 .reveal { animation: none !important; opacity: 1 !important; transform: none !important; }
  .home-v51 .track-panel { display: block !important; }
  .home-v51 .guarantee { background: none; color: var(--ink); }
  .home-v51 .guarantee p, .home-v51 .guarantee h3 { color: var(--ink); }
}