/* =========================================================================
   LUMINAGE — STOREFRONT DESIGN SYSTEM
   =========================================================================
   Loads alongside store.css, which owns the cart, checkout and price block.
   This file owns the marketing pages.

   DIRECTION
   ---------
   Luminage sells a mechanism, not a mood. Dr. Murad's Nobel was for cell
   SIGNALLING, and both products are really about a signal arriving on a
   known interval — 120 seconds for the serum, 30 days for the powder. So
   the spine of the site is a drawn signalling pathway, and intervals are
   labelled the way a protocol labels them.

   Everything else stays quiet so the pathway carries the page: deep
   botanical ground, warm paper, one gold hairline, and generous air.

   Forest   #0f1e18   dark bands, hero
   Paper    #fbfaf7   light ground
   Ink      #1a1a1a   body
   Gold     #d4af37   rules and nodes
   Crimson  #b41e2d   RWND25 only
   ========================================================================= */

:root {
  --forest:      #0f1e18;
  --forest-2:    #16302650;
  --forest-line: #2c473d;
  --forest-text: #b9c9c0;

  --crimson:     #b41e2d;
  --crimson-ink: #8e1622;
  --crimson-wash:#fdf1f2;

  --site-max: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

/* =========================================================================
   BASE
   ========================================================================= */
body.site {
  margin: 0;
  background: var(--lum-paper);
  color: var(--lum-ink);
  font-family: var(--lum-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.wrap {
  width: 100%;
  max-width: var(--site-max);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.wrap--narrow { max-width: 780px; }

.section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }
.section--dark { background: var(--forest); color: #fff; }
.section--paper { background: var(--lum-paper); }
.section--surface { background: var(--lum-surface); }

/* =========================================================================
   TYPE SCALE
   ========================================================================= */
.display {
  font-family: var(--lum-display);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.025em;
  margin: 0;
}
.display--xl { font-size: clamp(2.6rem, 7vw, 4.6rem); }
.display--l  { font-size: clamp(2.1rem, 5vw, 3.2rem); }
.display--m  { font-size: clamp(1.6rem, 3.4vw, 2.2rem); }

.lede {
  font-size: clamp(1.02rem, 1.6vw, 1.18rem);
  line-height: 1.68;
  color: var(--lum-graphite);
  max-width: 56ch;
  margin: 0;
}
.section--dark .lede { color: var(--forest-text); }

.body-copy { font-size: 1rem; line-height: 1.75; color: var(--lum-ink-soft); }
.body-copy p { margin: 0 0 1.1em; }
.body-copy p:last-child { margin-bottom: 0; }

/* Eyebrow, gold-capped. The recurring structural device. */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--lum-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lum-gold-ink);
  margin: 0 0 1.1rem;
}
.eyebrow::before {
  content: '';
  width: 26px;
  height: 1px;
  background: var(--lum-gold);
  flex: 0 0 26px;
}
.section--dark .eyebrow { color: var(--lum-gold); }

.section-head { max-width: 62ch; margin-bottom: clamp(2.5rem, 5vw, 3.5rem); }
.section-head .display { margin-bottom: 1rem; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-head--center .lede { margin-inline: auto; }

/* =========================================================================
   NAV
   ========================================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(251, 250, 247, 0.86);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.is-stuck { border-bottom-color: var(--lum-hairline); }

/* Over a dark hero the nav inverts until the page scrolls. */
.nav--over-dark:not(.is-stuck) { background: transparent; }
.nav--over-dark:not(.is-stuck) .nav__brand,
.nav--over-dark:not(.is-stuck) .nav__link { color: #fff; }
.nav--over-dark:not(.is-stuck) .nav__bag {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}
.nav--over-dark:not(.is-stuck) .nav__bag:hover { background: rgba(255, 255, 255, 0.12); }
/* The menu button inherits ink by default, which is invisible on the dark
   hero. Invert it with everything else until the nav sticks. */
.nav--over-dark:not(.is-stuck) .nav__toggle {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 72px;
}
.nav__brand {
  font-family: var(--lum-display);
  font-size: 1.28rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--lum-ink);
  text-decoration: none;
  white-space: nowrap;
}
.nav__links { display: flex; align-items: center; gap: 2rem; margin: 0; padding: 0; list-style: none; }
.nav__link {
  font-family: var(--lum-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--lum-graphite);
  text-decoration: none;
  padding-block: 4px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.nav__link:hover { color: var(--lum-ink); border-bottom-color: var(--lum-gold); }

.nav__bag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 9px 18px;
  border: 1px solid var(--lum-hairline-2);
  border-radius: 999px;
  background: transparent;
  font-family: var(--lum-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--lum-ink);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.nav__bag:hover { border-color: var(--lum-ink); background: var(--lum-surface); }
.nav__bag svg { width: 15px; height: 15px; }
.nav__bag-count {
  min-width: 18px;
  padding: 1px 5px;
  border-radius: 999px;
  background: var(--lum-gold);
  color: var(--forest);
  font-size: 0.64rem;
  font-weight: 600;
  text-align: center;
}
.nav__bag-count:empty, .nav__bag-count[data-zero="true"] { display: none; }

.nav__toggle {
  display: none;
  width: 38px; height: 38px;
  border: 1px solid var(--lum-hairline-2);
  border-radius: var(--lum-r);
  background: transparent;
  cursor: pointer;
  color: inherit;
}
.nav__toggle svg { width: 17px; height: 17px; }

/* =========================================================================
   HERO
   ========================================================================= */
.hero {
  position: relative;
  background: var(--forest);
  color: #fff;
  overflow: hidden;
  padding-block: clamp(3.5rem, 8vw, 6rem) clamp(0rem, 2vw, 1rem);
  margin-top: -72px;
  padding-top: calc(72px + clamp(3.5rem, 8vw, 6rem));
}

/* A faint contour field, like a concentration gradient. Sits far back. */
.hero::before {
  content: '';
  position: absolute;
  inset: -20% -10% auto auto;
  width: 70vw;
  height: 70vw;
  max-width: 820px;
  max-height: 820px;
  background:
    radial-gradient(circle at 60% 40%, rgba(212, 175, 55, 0.13), transparent 58%),
    radial-gradient(circle at 30% 70%, rgba(93, 168, 133, 0.12), transparent 60%);
  filter: blur(8px);
  pointer-events: none;
}

.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.hero__title { color: #fff; margin-bottom: 1.4rem; }
.hero__title em {
  font-style: italic;
  font-weight: 400;
  color: var(--lum-gold);
}
.hero__lede { color: var(--forest-text); margin-bottom: 2rem; max-width: 46ch; }

.hero__actions { display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: center; }

.hero__media { position: relative; }
.hero__media img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
}

/* Credential card, overlapping the product shot. */
.hero__cred {
  position: absolute;
  left: -1.5rem;
  bottom: -1.25rem;
  max-width: 270px;
  padding: 1.1rem 1.25rem;
  background: var(--lum-surface);
  border-radius: 4px;
  box-shadow: 0 18px 44px -18px rgba(0, 0, 0, 0.55);
}
.hero__cred-label {
  display: block;
  font-family: var(--lum-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lum-gold-ink);
  margin-bottom: 6px;
}
.hero__cred-name {
  margin: 0;
  font-family: var(--lum-display);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--lum-ink);
  line-height: 1.25;
}
.hero__cred-note { margin: 4px 0 0; font-size: 0.75rem; color: var(--lum-graphite); line-height: 1.45; }

/* Assurance strip along the bottom of the hero. */
.assurance {
  position: relative;
  margin-top: clamp(2.5rem, 6vw, 4rem);
  border-top: 1px solid var(--forest-line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.assurance__item {
  padding: 1.15rem 1.25rem;
  border-right: 1px solid var(--forest-line);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--lum-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--forest-text);
}
.assurance__item:last-child { border-right: none; }
.assurance__item svg { width: 15px; height: 15px; flex: 0 0 15px; color: var(--lum-gold); }

/* =========================================================================
   PATHWAY  — the signature element
   =========================================================================
   A drawn signalling chain. Each station is a real step in the claimed
   mechanism, so the numbering carries information rather than decorating.
   ========================================================================= */
.pathway {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  counter-reset: station;
}

.station {
  position: relative;
  padding: 0 1.25rem 0 0;
}
.station:last-child { padding-right: 0; }

/* The connecting rule, with the node sitting on it. */
.station__track {
  position: relative;
  height: 1px;
  background: var(--lum-hairline-2);
  margin-bottom: 1.5rem;
}
.station:last-child .station__track { background: linear-gradient(to right, var(--lum-hairline-2) 60%, transparent); }

.station__node {
  position: absolute;
  top: 50%;
  left: 0;
  width: 11px; height: 11px;
  border-radius: 50%;
  border: 1px solid var(--lum-gold);
  background: var(--lum-paper);
  transform: translateY(-50%);
}
.station__node::after {
  content: '';
  position: absolute;
  inset: 2.5px;
  border-radius: 50%;
  background: var(--lum-gold);
  opacity: 0;
  transition: opacity 0.5s ease;
}
.station.is-lit .station__node::after { opacity: 1; }

.station__index {
  counter-increment: station;
  display: block;
  font-family: var(--lum-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  color: var(--lum-mute);
  margin-bottom: 0.5rem;
}
.station__index::before { content: counter(station, decimal-leading-zero); }

.station__title {
  margin: 0 0 0.45rem;
  font-family: var(--lum-display);
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.25;
}
.station__text { margin: 0; font-size: 0.88rem; line-height: 1.6; color: var(--lum-graphite); }

.section--dark .station__track { background: var(--forest-line); }
.section--dark .station__node { background: var(--forest); }
.section--dark .station__title { color: #fff; }
.section--dark .station__text { color: var(--forest-text); }
.section--dark .station__index { color: var(--forest-text); opacity: 0.7; }

/* =========================================================================
   INTERVAL  — how long a thing takes, labelled like a protocol
   ========================================================================= */
.interval {
  /* Block-level flex so it starts its own line under the eyebrow, which is
     inline-flex and would otherwise sit beside it. */
  display: flex;
  width: fit-content;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.5rem 0 0.6rem;
  border-top: 1px solid var(--lum-gold);
  margin-bottom: 1.25rem;
}
.interval__value {
  font-family: var(--lum-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}
.interval__unit {
  font-family: var(--lum-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lum-graphite);
}
.section--dark .interval__unit { color: var(--forest-text); }

/* =========================================================================
   PRODUCT FEATURE
   ========================================================================= */
.feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.feature--flip .feature__media { order: 2; }

.feature__media { position: relative; }
.feature__media img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
}
/* A quiet plate behind the shot, offset like a specimen card. */
.feature__media::before {
  content: '';
  position: absolute;
  inset: auto -1.5rem -1.5rem auto;
  width: 62%;
  height: 62%;
  background: var(--lum-sunken);
  border: 1px solid var(--lum-hairline);
  border-radius: 6px;
  z-index: -1;
}
.feature--flip .feature__media::before { inset: auto auto -1.5rem -1.5rem; }

.feature__title { margin-bottom: 1rem; }
.feature__lede { margin-bottom: 1.5rem; }

.feature__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1.75rem;
}

/* Short claim list with hairline rules. */
.claims { list-style: none; margin: 0 0 1.5rem; padding: 0; }
.claims li {
  display: flex;
  gap: 0.8rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--lum-hairline);
  font-size: 0.92rem;
  line-height: 1.55;
}
.claims li:last-child { border-bottom: 1px solid var(--lum-hairline); }
.claims svg { width: 15px; height: 15px; flex: 0 0 15px; margin-top: 4px; color: var(--lum-gold-ink); }
.section--dark .claims li { border-color: var(--forest-line); color: var(--forest-text); }
.section--dark .claims svg { color: var(--lum-gold); }

/* =========================================================================
   INGREDIENTS
   ========================================================================= */
.actives {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1px;
  background: var(--lum-hairline);
  border: 1px solid var(--lum-hairline);
  border-radius: 4px;
  overflow: hidden;
}
.active {
  background: var(--lum-surface);
  padding: 1.6rem 1.4rem;
}
.active__name {
  margin: 0 0 0.3rem;
  font-family: var(--lum-display);
  font-size: 1.08rem;
  font-weight: 700;
}
.active__role {
  display: block;
  font-family: var(--lum-mono);
  font-size: 0.62rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--lum-gold-ink);
  margin-bottom: 0.7rem;
}
.active__text { margin: 0; font-size: 0.85rem; line-height: 1.62; color: var(--lum-graphite); }

/* =========================================================================
   COMPARISON TABLE
   ========================================================================= */
.compare-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.compare {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.compare th, .compare td {
  padding: 1rem 1.1rem;
  text-align: left;
  border-bottom: 1px solid var(--lum-hairline);
  vertical-align: top;
}
.compare thead th {
  font-family: var(--lum-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--lum-mute);
  border-bottom-color: var(--lum-hairline-2);
}
.compare tbody th { font-weight: 600; color: var(--lum-ink); width: 34%; }
.compare .col-ours { background: var(--lum-gold-wash); }
.compare thead .col-ours {
  color: var(--lum-gold-ink);
  font-weight: 600;
  border-bottom-color: var(--lum-gold);
}
.compare td svg { width: 14px; height: 14px; margin-right: 6px; vertical-align: -2px; }
.yes { color: var(--lum-green); }
.no  { color: var(--lum-mute); }

/* =========================================================================
   FAQ
   ========================================================================= */
.faq { border-top: 1px solid var(--lum-hairline); }
.faq__item { border-bottom: 1px solid var(--lum-hairline); }
.faq__q {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.35rem 0;
  border: none;
  background: none;
  font-family: var(--lum-display);
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: left;
  color: var(--lum-ink);
  cursor: pointer;
}
.faq__sign {
  position: relative;
  width: 13px; height: 13px;
  flex: 0 0 13px;
  margin-top: 6px;
}
.faq__sign::before, .faq__sign::after {
  content: '';
  position: absolute;
  background: var(--lum-gold-ink);
  transition: transform 0.28s var(--lum-ease), opacity 0.28s;
}
.faq__sign::before { top: 6px; left: 0; width: 13px; height: 1px; }
.faq__sign::after  { left: 6px; top: 0; width: 1px; height: 13px; }
.faq__item.is-open .faq__sign::after { transform: rotate(90deg); opacity: 0; }

.faq__a {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.34s var(--lum-ease);
}
.faq__a-inner {
  padding: 0 2.5rem 1.5rem 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--lum-graphite);
}
.faq__a-inner p { margin: 0 0 0.9em; }
.faq__a-inner p:last-child { margin-bottom: 0; }

/* =========================================================================
   CTA BAND
   ========================================================================= */
.cta-band { text-align: center; }
.cta-band .display { color: #fff; margin-bottom: 1rem; }
.cta-band .lede { margin-inline: auto; margin-bottom: 2rem; }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: 0.8rem; justify-content: center; }

/* Buttons that sit on the dark ground. */
.lum-btn--light {
  background: #fff;
  border-color: #fff;
  color: var(--forest);
}
.lum-btn--light:hover:not(:disabled) {
  background: var(--lum-gold);
  border-color: var(--lum-gold);
  color: var(--forest);
  transform: translateY(-1px);
}
.lum-btn--outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}
.lum-btn--outline-light:hover:not(:disabled) {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

/* =========================================================================
   BUY BAR  (product pages) — appears once the main buy block scrolls away
   ========================================================================= */
.buybar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 180;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 0.75rem var(--gutter);
  padding-bottom: calc(0.75rem + env(safe-area-inset-bottom, 0px));
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--lum-hairline);
  transform: translateY(110%);
  transition: transform 0.32s var(--lum-ease);
}
.buybar.is-visible { transform: translateY(0); }
.buybar__info { display: flex; align-items: center; gap: 1rem; min-width: 0; }
.buybar__name {
  margin: 0;
  font-family: var(--lum-display);
  font-size: 1rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.buybar .lum-btn { flex: 0 0 auto; }

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer { background: var(--forest); color: var(--forest-text); padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; }
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--forest-line);
}
.footer__brand {
  display: block;
  font-family: var(--lum-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: #fff;
  text-decoration: none;
  margin-bottom: 0.9rem;
}
.footer__text { margin: 0; font-size: 0.88rem; line-height: 1.7; max-width: 38ch; }
.footer__title {
  font-family: var(--lum-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #fff;
  margin: 0 0 1rem;
}
.footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.footer__list a { color: var(--forest-text); text-decoration: none; font-size: 0.88rem; }
.footer__list a:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }

.footer__base {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  padding-top: 1.75rem;
  font-size: 0.76rem;
  color: #7d9086;
}
.footer__disclaimer {
  margin: 1.5rem 0 0;
  font-size: 0.72rem;
  line-height: 1.7;
  color: #7d9086;
  max-width: 90ch;
}

/* =========================================================================
   SCROLL REVEAL
   ========================================================================= */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--lum-ease), transform 0.7s var(--lum-ease);
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }

/* =========================================================================
   RWND25 ACCENT SCOPE
   ========================================================================= */
.theme-rwnd .eyebrow { color: var(--crimson-ink); }
.theme-rwnd .eyebrow::before { background: var(--crimson); }
.theme-rwnd .station__node { border-color: var(--crimson); }
.theme-rwnd .station__node::after { background: var(--crimson); }
.theme-rwnd .interval { border-top-color: var(--crimson); }
.theme-rwnd .active__role { color: var(--crimson-ink); }
.theme-rwnd .claims svg { color: var(--crimson-ink); }
.theme-rwnd .compare .col-ours { background: var(--crimson-wash); }
.theme-rwnd .compare thead .col-ours { color: var(--crimson-ink); border-bottom-color: var(--crimson); }
.theme-rwnd .faq__sign::before, .theme-rwnd .faq__sign::after { background: var(--crimson-ink); }
.theme-rwnd .hero__cred-label { color: var(--crimson-ink); }

/* =========================================================================
   RESPONSIVE
   ========================================================================= */
@media (max-width: 1023px) {
  .pathway { grid-template-columns: repeat(2, 1fr); row-gap: 2.5rem; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__media { max-width: 460px; margin-inline: auto; }
  .hero__cred { left: 0; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__grid > :first-child { grid-column: 1 / -1; }
}

@media (max-width: 767px) {
  .nav__links { display: none; }
  .nav__toggle { display: inline-grid; place-items: center; }
  .nav__links.is-open {
    display: grid;
    position: absolute;
    top: 72px; left: 0; right: 0;
    gap: 0;
    padding: 0.5rem var(--gutter) 1.25rem;
    background: var(--lum-surface);
    border-bottom: 1px solid var(--lum-hairline);
  }
  .nav__links.is-open .nav__link {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--lum-hairline);
    color: var(--lum-ink);
  }

  .feature { grid-template-columns: 1fr; gap: 2rem; }
  .feature--flip .feature__media { order: 0; }
  .feature__media::before { display: none; }

  .assurance { grid-template-columns: 1fr; }
  .assurance__item { border-right: none; border-bottom: 1px solid var(--forest-line); }
  .assurance__item:last-child { border-bottom: none; }

  .pathway { grid-template-columns: 1fr; row-gap: 0; }
  /* Stacked, the chain runs down the left edge instead of across. */
  .station { padding: 0 0 1.75rem 1.9rem; }
  .station:last-child { padding-bottom: 0; }
  .station__track {
    position: absolute;
    top: 6px; bottom: 0; left: 5px;
    width: 1px; height: auto;
    margin: 0;
  }
  .station:last-child .station__track { background: linear-gradient(to bottom, var(--lum-hairline-2) 40%, transparent); }
  .station__node { top: 0; left: -5.5px; transform: none; }

  .buybar { padding-inline: 1rem; }
  .buybar__name { font-size: 0.9rem; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__grid > :first-child { grid-column: auto; }
}

/* =========================================================================
   PREFERENCES
   ========================================================================= */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .station__node::after { opacity: 1; transition: none; }
  .buybar { transition: none; }
  .faq__a { transition: none; }
}

/* =========================================================================
   PRODUCT PAGE (PDP)
   ========================================================================= */
.pdp {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
  padding-block: clamp(2rem, 5vw, 3.5rem) clamp(3rem, 7vw, 5rem);
}

/* -- Gallery ------------------------------------------------------------- */
.gallery__main {
  position: relative;
  aspect-ratio: 1;
  border: 1px solid var(--lum-hairline);
  border-radius: 6px;
  overflow: hidden;
  background: var(--lum-surface);
}
.gallery__main img {
  width: 100%; height: 100%;
  object-fit: cover;
  /* Portrait shots put the product low in the frame; bias the crop down so a
     square thumbnail does not fill with empty backdrop. */
  object-position: 50% 62%;
  display: block;
}

.gallery__thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
  margin-top: 0.6rem;
}
.gallery__thumb {
  aspect-ratio: 1;
  padding: 0;
  border: 1px solid var(--lum-hairline);
  border-radius: 4px;
  overflow: hidden;
  background: var(--lum-surface);
  cursor: pointer;
  transition: border-color 0.2s;
}
.gallery__thumb img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 62%; display: block; }
.gallery__thumb.is-active { border-color: var(--lum-ink); }
.gallery__thumb:hover { border-color: var(--lum-hairline-2); }

/* -- Buy panel ----------------------------------------------------------- */
.buypanel { position: sticky; top: 96px; }
.buypanel__title { margin: 0 0 0.6rem; }
.buypanel__sub {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  color: var(--lum-graphite);
  line-height: 1.6;
}

.rating {
  /* Block-level flex so it starts its own line under the eyebrow, which is
     itself inline-flex and would otherwise sit beside it. */
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
  font-family: var(--lum-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--lum-graphite);
}
.rating__stars { color: var(--lum-gold); letter-spacing: 0.1em; font-size: 0.85rem; }

.buypanel__price { margin-bottom: 1.25rem; }

.buypanel__cta { margin-top: 1.5rem; display: grid; gap: 0.6rem; }

.reassure {
  display: grid;
  gap: 0.55rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--lum-hairline);
}
.reassure__item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  color: var(--lum-graphite);
}
.reassure__item svg { width: 14px; height: 14px; flex: 0 0 14px; color: var(--lum-gold-ink); }
.theme-rwnd .reassure__item svg { color: var(--crimson-ink); }

/* -- Usage steps --------------------------------------------------------- */
.usage {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1px;
  background: var(--lum-hairline);
  border: 1px solid var(--lum-hairline);
  border-radius: 4px;
  overflow: hidden;
}
.usage__step { background: var(--lum-surface); padding: 1.75rem 1.5rem; }
.usage__num {
  display: block;
  font-family: var(--lum-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  color: var(--lum-gold-ink);
  margin-bottom: 0.7rem;
}
.theme-rwnd .usage__num { color: var(--crimson-ink); }
.usage__title { margin: 0 0 0.4rem; font-family: var(--lum-display); font-size: 1.1rem; font-weight: 700; }
.usage__text { margin: 0; font-size: 0.88rem; line-height: 1.65; color: var(--lum-graphite); }

/* -- Spec panel ---------------------------------------------------------- */
.spec {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
}
.spec__media img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--lum-hairline);
  border-radius: 6px;
  background: var(--lum-surface);
}

/* -- Actives with imagery ------------------------------------------------ */
.active--media { padding: 0; display: flex; flex-direction: column; }
.active--media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}
.active__body { padding: 1.4rem; }

@media (max-width: 1023px) {
  .pdp { grid-template-columns: 1fr; }
  .buypanel { position: static; }
  .spec { grid-template-columns: 1fr; }
}