/* ==========================================================================
   Back40 Engineering — site mockup
   Styled on the B40 design system (css/tokens.css — all --b40-* variables).
   Dark-first, precision instrumentation. Pure CSS, no frameworks, no JS.
   ========================================================================== */

:root {
  /* Local shorthands for the chrome and gold tokens.
     Chrome tracks Pitstop (pitstop.back40e.com): warm dark gray raised surface,
     not the blue-leaning surface-metal token. */
  --metal: var(--b40-color-surface-raised);
  --metal-border: var(--b40-color-border-default);
  --metal-edge: inset 0 1px 0 0 rgba(212, 210, 205, .10), inset 0 -1px 0 0 rgba(0, 0, 0, .20);
  --gold-300: var(--b40-color-gold-300);
  --gold-400: var(--b40-color-gold-400);
  --gold-950: var(--b40-color-gold-950);

  --container: 1180px;
}

/* ---- Reset & base ---- */
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--b40-font-family-sans);
  font-size: var(--b40-font-size-md);
  line-height: var(--b40-font-lineheight-normal);
  background: var(--b40-color-surface-base);
  color: var(--b40-color-text-primary);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
h1, h2, h3, h4 {
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-bold);
  line-height: var(--b40-font-lineheight-tight);
  letter-spacing: var(--b40-font-tracking-wide);
  text-transform: uppercase;
  margin: 0 0 .5em;
}
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); }
h3 { font-size: var(--b40-font-size-xl); }
p { margin: 0 0 1em; }
a { color: inherit; }
html { scroll-behavior: smooth; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* Section label — bar-section-label pattern from the design system */
.eyebrow {
  display: flex;
  align-items: center;
  gap: var(--b40-spacing-5);
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-bold);
  font-size: var(--b40-font-size-xs);
  letter-spacing: var(--b40-font-tracking-widest);
  text-transform: uppercase;
  color: var(--b40-color-text-brand);
  margin-bottom: 1.1em;
}
.eyebrow::after { content: ""; flex: 1; max-width: 64px; height: 1px; background: var(--b40-color-border-default); }
.eyebrow--gold { color: var(--gold-300); }
.accent { color: var(--b40-color-text-brand); }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  font-family: var(--b40-font-family-sans);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-sm);
  letter-spacing: var(--b40-font-tracking-wide);
  text-transform: uppercase;
  text-decoration: none;
  padding: 13px 26px;
  border-radius: var(--b40-radius-sm);
  border: 1px solid transparent;
  transition: background var(--b40-motion-duration-fast) var(--b40-motion-easing-ease-out),
              box-shadow var(--b40-motion-duration-fast) var(--b40-motion-easing-ease-out),
              border-color var(--b40-motion-duration-fast) var(--b40-motion-easing-ease-out),
              color var(--b40-motion-duration-fast) var(--b40-motion-easing-ease-out);
}
.btn--gold {
  background: var(--b40-color-brand-primary);
  color: var(--b40-color-brand-on-primary);
}
.btn--gold:hover { background: var(--b40-color-brand-primary-hover); box-shadow: var(--b40-shadow-glow-brand); }
.btn--ghost {
  border-color: var(--b40-color-border-strong);
  color: var(--b40-color-text-secondary);
}
.btn--ghost:hover {
  border-color: var(--b40-color-border-focus);
  color: var(--b40-color-text-brand);
  background: var(--b40-color-surface-overlay);
}
.btn--dark {
  border-color: var(--b40-color-border-brand);
  color: var(--b40-color-text-brand);
  background: var(--b40-color-brand-primary-subtle);
}
.btn--dark:hover { background: var(--b40-color-brand-primary); color: var(--b40-color-brand-on-primary); box-shadow: var(--b40-shadow-glow-sm); }
.btn--small { padding: 8px 16px; font-size: var(--b40-font-size-xs); }
.btn--big { padding: 16px 36px; font-size: var(--b40-font-size-md); }

/* ==========================================================================
   Marquee — instrumentation ticker on metal chrome
   ========================================================================== */
.marquee {
  background: var(--metal);
  border-bottom: 1px solid var(--metal-border);
  box-shadow: var(--metal-edge);
  color: var(--b40-color-text-secondary);
  overflow: hidden;
  font-family: var(--b40-font-family-mono);
  font-size: var(--b40-font-size-2xs);
  letter-spacing: var(--b40-font-tracking-widest);
  text-transform: uppercase;
  padding: 8px 0;
  white-space: nowrap;
}
.marquee__track {
  display: inline-flex;
  align-items: center;
  gap: 2.5rem;
  padding-left: 2.5rem;
  animation: marquee 28s linear infinite;
}
.marquee__dot { color: var(--b40-color-brand-primary); font-size: .4rem; }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .marquee__track { animation: none; }
}

/* ==========================================================================
   Header — metal chrome top bar
   ========================================================================== */
.header {
  background: var(--metal);
  position: sticky;
  top: 0;
  z-index: var(--b40-zindex-sticky);
  border-bottom: 1px solid var(--metal-border);
  box-shadow: var(--metal-edge);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}
.header__brand img { height: 48px; width: auto; }

.nav { display: flex; align-items: center; gap: 26px; }
.nav a {
  position: relative;
  color: var(--b40-color-text-secondary);
  text-decoration: none;
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-sm);
  letter-spacing: var(--b40-font-tracking-widest);
  text-transform: uppercase;
  transition: color var(--b40-motion-duration-fast) var(--b40-motion-easing-ease-out);
}
.nav a:hover { color: var(--b40-color-text-brand); }
/* Current page — brand text plus a 2px underline bar */
.nav a.is-active { color: var(--b40-color-text-brand); }
.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -7px;
  height: 2px;
  background: var(--b40-color-brand-primary);
}
.nav .btn { color: var(--b40-color-brand-on-primary); font-family: var(--b40-font-family-sans); }

/* CSS-only mobile nav */
.nav-toggle { display: none; }
.nav-toggle__button { display: none; cursor: pointer; padding: 8px; }
.nav-toggle__button span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--b40-color-brand-primary);
  margin: 6px 0;
  transition: transform var(--b40-motion-duration-normal) var(--b40-motion-easing-ease-out),
              opacity var(--b40-motion-duration-normal) var(--b40-motion-easing-ease-out);
}

@media (max-width: 880px) {
  .nav-toggle__button { display: block; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--metal);
    border-bottom: 1px solid var(--b40-color-border-brand);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--b40-motion-duration-slow) var(--b40-motion-easing-ease-out);
  }
  .nav a { padding: 14px 24px; width: 100%; border-top: 1px solid var(--metal-border); }
  /* Stacked rows — swap the underline for a left accent bar */
  .nav a.is-active::after { left: 0; right: auto; top: 0; bottom: 0; width: 2px; height: auto; }
  .nav .btn { margin: 10px 24px 18px; width: auto; border-top: none; }
  .nav-toggle:checked ~ .nav { max-height: 480px; }
  .nav-toggle:checked ~ .nav-toggle__button span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-toggle__button span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-toggle__button span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  background: var(--b40-color-surface-base);
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background: url("../images/hero-dash.jpg") center 35% / cover no-repeat;
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(18, 16, 9, .96) 0%, rgba(18, 16, 9, .82) 45%, rgba(18, 16, 9, .35) 100%);
}
.hero__content {
  position: relative;
  z-index: 1;
  padding-top: clamp(72px, 11vw, 130px);
  padding-bottom: clamp(72px, 11vw, 130px);
}
.hero__title {
  font-size: clamp(3.2rem, 9vw, 6.4rem);
  font-style: oblique 8deg;
  letter-spacing: var(--b40-font-tracking-wide);
  margin-bottom: .3em;
}
.hero__lede {
  max-width: 540px;
  font-size: var(--b40-font-size-lg);
  color: var(--b40-color-text-secondary);
  margin-bottom: 2em;
}
.hero__lede strong { color: var(--b40-color-text-primary); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Stat chips — bar-item instrument pattern: raised, left status accent, mono values */
.hero__stats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 52px 0 0;
  padding: 0;
}
.hero__stats li {
  background: var(--b40-color-surface-raised);
  border: 1px solid var(--b40-color-border-default);
  border-left: 2px solid var(--b40-color-brand-primary);
  border-radius: var(--b40-radius-xs);
  box-shadow: var(--b40-shadow-edge-top);
  padding: 12px 20px;
  display: flex;
  flex-direction: column;
  min-width: 128px;
}
.hero__stats li:nth-child(2) { border-left-color: var(--gold-400); }
.hero__stats li:nth-child(3) { border-left-color: var(--b40-color-dataviz-series-2); }
.hero__stats li:nth-child(4) { border-left-color: var(--b40-color-dataviz-gauge-safe); }
.hero__stats strong {
  font-family: var(--b40-font-family-mono);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-2xl);
  color: var(--b40-color-text-data);
  line-height: var(--b40-font-lineheight-tight);
}
.hero__stats li:nth-child(1) strong { color: var(--b40-color-brand-primary-hover); }
.hero__stats li:nth-child(2) strong { color: var(--gold-300); }
.hero__stats li:nth-child(3) strong { color: var(--b40-color-dataviz-series-2); }
.hero__stats li:nth-child(4) strong { color: var(--b40-color-dataviz-gauge-safe); }
.hero__stats span {
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-2xs);
  letter-spacing: var(--b40-font-tracking-widest);
  text-transform: uppercase;
  color: var(--b40-color-text-tertiary);
  margin-top: 3px;
}

/* ==========================================================================
   Tagline strip — the brand triplet as plain type, no icons, no cards
   ========================================================================== */
.value-strip {
  background: var(--b40-color-surface-base);
  border-top: 1px solid var(--b40-color-border-default);
  padding: clamp(48px, 7vw, 80px) 0;
}
.value-strip__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px clamp(28px, 4vw, 56px);
}
.value h3 {
  font-size: clamp(1.5rem, 2.6vw, 1.875rem);
  font-style: oblique 8deg;
  color: var(--b40-color-text-brand);
  margin-bottom: .35em;
}
.value p { color: var(--b40-color-text-tertiary); font-size: var(--b40-font-size-sm); margin: 0; max-width: 40ch; }
.value p a { color: var(--b40-color-text-brand); font-weight: var(--b40-font-weight-medium); }

/* ==========================================================================
   How it works
   ========================================================================== */
.how {
  background: var(--b40-color-surface-raised);
  border-top: 1px solid var(--b40-color-border-default);
  border-bottom: 1px solid var(--b40-color-border-default);
  padding: clamp(64px, 9vw, 110px) 0;
}
.how__grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
}
.steps { list-style: none; margin: 0 0 2em; padding: 0; display: grid; gap: 18px; }
.steps li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--b40-color-surface-base);
  border: 1px solid var(--b40-color-border-default);
  border-left: 2px solid var(--b40-color-brand-primary);
  border-radius: var(--b40-radius-xs);
  box-shadow: var(--b40-shadow-edge-top);
  padding: 16px 18px;
}
.steps__num {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border-radius: var(--b40-radius-sm);
  background: var(--b40-color-brand-primary-subtle);
  border: 1px solid var(--b40-color-border-brand);
  color: var(--b40-color-text-brand);
  font-family: var(--b40-font-family-mono);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-md);
  display: grid;
  place-items: center;
  margin-top: 2px;
}
.steps h3 { margin-bottom: .25em; font-size: var(--b40-font-size-lg); }
.steps p { color: var(--b40-color-text-tertiary); font-size: var(--b40-font-size-sm); margin: 0; }
.steps p a { color: var(--b40-color-text-brand); font-weight: var(--b40-font-weight-medium); }
/* Inline generation marker — for steps that only apply to one board */
.steps__badge {
  display: inline-block;
  vertical-align: middle;
  margin-left: 10px;
  background: var(--gold-950);
  color: var(--gold-300);
  border: 1px solid var(--gold-400);
  border-radius: var(--b40-radius-sm);
  font-family: var(--b40-font-family-mono);
  font-weight: var(--b40-font-weight-medium);
  font-size: var(--b40-font-size-2xs);
  letter-spacing: var(--b40-font-tracking-widest);
  padding: 2px 8px;
}

.how__figure { margin: 0; }
.how__figure img {
  border-radius: var(--b40-radius-md);
  border: 1px solid var(--b40-color-border-default);
  box-shadow: var(--b40-shadow-lg);
}
/* Crop the portrait staging-lane photo to the tablet, not the sky */
.how__photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center bottom;
}
.how__figure figcaption {
  margin-top: 12px;
  font-family: var(--b40-font-family-mono);
  font-size: var(--b40-font-size-xs);
  letter-spacing: var(--b40-font-tracking-wide);
  color: var(--b40-color-text-tertiary);
  text-align: center;
}

@media (max-width: 880px) {
  .how__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Shop categories
   ========================================================================== */
.shop { background: var(--b40-color-surface-base); padding: clamp(64px, 9vw, 110px) 0; }
.section-head { text-align: center; max-width: 620px; margin: 0 auto clamp(36px, 5vw, 56px); }
.section-head__sub { color: var(--b40-color-text-tertiary); }

.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.card {
  background: var(--b40-color-surface-raised);
  border: 1px solid var(--b40-color-border-default);
  border-radius: var(--b40-radius-md);
  box-shadow: var(--b40-shadow-edge-top);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: border-color var(--b40-motion-duration-fast) var(--b40-motion-easing-ease-out),
              box-shadow var(--b40-motion-duration-fast) var(--b40-motion-easing-ease-out);
}
.card:hover {
  border-color: var(--b40-color-border-strong);
  box-shadow: var(--b40-shadow-glow-sm), var(--b40-shadow-edge-top);
}

.card__media {
  position: relative;
  aspect-ratio: 3 / 2;
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--b40-color-border-default);
}
.card__media--gauge {
  background:
    radial-gradient(circle at 50% 130%, rgba(232, 148, 13, .22), transparent 60%),
    var(--b40-color-surface-sunken);
  box-shadow: var(--b40-shadow-inner);
}
/* Typographic readout — gauge-style product mark in place of stock icons */
.card__readout { text-align: center; }
.card__readout strong {
  display: block;
  font-family: var(--b40-font-family-mono);
  font-weight: var(--b40-font-weight-semibold);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  letter-spacing: var(--b40-font-tracking-tight);
  color: var(--b40-color-brand-primary);
  line-height: var(--b40-font-lineheight-tight);
}
.card__readout > span {
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-2xs);
  letter-spacing: var(--b40-font-tracking-widest);
  text-transform: uppercase;
  color: var(--b40-color-text-tertiary);
}
.card__media--photo { background-size: cover; background-position: center; }
.card__media--box { background-image: url("../images/data-box.jpg"); background-position: center 40%; }
.card__media--tractor { background-image: url("../images/tractor.jpg"); }
.card__media--install { background-image: url("../images/install.jpg"); }
.card__media--mount { background-image: url("../images/hero-dash.jpg"); background-position: 70% 60%; }

/* Run-badge treatment — gold on near-black with gold glow */
.badge {
  position: absolute;
  top: 10px;
  left: 10px;
  font-family: var(--b40-font-family-mono);
  font-weight: var(--b40-font-weight-medium);
  font-size: var(--b40-font-size-2xs);
  letter-spacing: var(--b40-font-tracking-widest);
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: var(--b40-radius-sm);
}
.badge--new {
  background: var(--gold-950);
  color: var(--gold-300);
  border: 1px solid var(--b40-color-border-brand);
  box-shadow: 0 0 7px 1px rgba(212, 169, 15, .18);
}

.card__body { padding: 16px 18px 18px; display: flex; flex-direction: column; flex: 1; }
.card__body h3 { font-size: var(--b40-font-size-lg); letter-spacing: var(--b40-font-tracking-wide); }
.card__body p { color: var(--b40-color-text-tertiary); font-size: var(--b40-font-size-sm); flex: 1; }
.card__link {
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-sm);
  letter-spacing: var(--b40-font-tracking-widest);
  text-transform: uppercase;
  color: var(--b40-color-text-brand);
}
.card:hover .card__link { color: var(--b40-color-brand-primary-active); }

.shop__partner {
  max-width: 760px;
  margin: clamp(32px, 5vw, 48px) auto 0;
  text-align: center;
  color: var(--b40-color-text-tertiary);
  font-size: var(--b40-font-size-sm);
}
.shop__partner a { color: var(--b40-color-text-brand); font-weight: var(--b40-font-weight-medium); }

@media (max-width: 1020px) { .cards { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px)  { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .cards { grid-template-columns: 1fr; } }

/* ==========================================================================
   EZ Dash app
   ========================================================================== */
.app {
  background: var(--b40-color-surface-raised);
  border-top: 1px solid var(--b40-color-border-default);
  border-bottom: 1px solid var(--b40-color-border-default);
  padding: clamp(64px, 9vw, 110px) 0;
}
.app__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
}
/* Landscape tablet frame — EZ Dash 3.0 runs 16:9 on the tablet */
.app__phone { margin: 0; display: grid; place-items: center; }
.app__phone img {
  background: var(--b40-color-surface-sunken);
  border: 1px solid var(--b40-color-border-brand);
  border-radius: var(--b40-radius-md);
  padding: 10px;
  box-shadow: var(--b40-shadow-xl), var(--b40-shadow-glow-sm);
  max-width: 580px;
  width: 100%;
}
.app__text p { color: var(--b40-color-text-secondary); }

/* Changelog — plain hairline rows, mono version numbers */
.app__updates {
  list-style: none;
  margin: 0 0 1.6em;
  padding: 0;
}
.app__updates li {
  border-top: 1px solid var(--b40-color-border-default);
  padding: 10px 0;
  font-size: var(--b40-font-size-sm);
  color: var(--b40-color-text-secondary);
}
.app__updates li:last-child { border-bottom: 1px solid var(--b40-color-border-default); }
.app__updates strong {
  margin-right: 8px;
  font-family: var(--b40-font-family-mono);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-xs);
  letter-spacing: var(--b40-font-tracking-wide);
  text-transform: uppercase;
  color: var(--b40-color-text-brand);
}
.app__note { margin-top: 1.6em; font-style: italic; color: var(--gold-300) !important; }

@media (max-width: 880px) {
  .app__grid { grid-template-columns: 1fr; }
  .app__phone { order: 2; }
}

/* ==========================================================================
   Pitstop — the web analysis platform
   ========================================================================== */
.pitstop {
  background: var(--b40-color-surface-base);
  border-bottom: 1px solid var(--b40-color-border-default);
  padding: clamp(64px, 9vw, 110px) 0;
}
.pitstop__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: start;
}
.pitstop__logo { height: 84px; width: auto; margin-bottom: 24px; }
.pitstop__tag {
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-bold);
  font-size: var(--b40-font-size-lg);
  letter-spacing: var(--b40-font-tracking-wide);
  text-transform: uppercase;
  color: var(--gold-300);
  margin: 0 0 1em;
}
.pitstop__text p { color: var(--b40-color-text-secondary); }

/* Feature tiles — bar-item pattern, one accent colour per row */
.pitstop__features { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.pitstop__features li {
  background: var(--b40-color-surface-raised);
  border: 1px solid var(--b40-color-border-default);
  border-left: 2px solid var(--b40-color-brand-primary);
  border-radius: var(--b40-radius-xs);
  box-shadow: var(--b40-shadow-edge-top);
  padding: 15px 20px;
}
.pitstop__features li:nth-child(2) { border-left-color: var(--gold-400); }
.pitstop__features li:nth-child(3) { border-left-color: var(--b40-color-dataviz-series-2); }
.pitstop__features li:nth-child(4) { border-left-color: var(--b40-color-dataviz-gauge-safe); }
.pitstop__features li:nth-child(5) { border-left-color: var(--b40-color-dataviz-series-5); }
.pitstop__features h3 {
  margin: 0 0 3px;
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-sm);
  letter-spacing: var(--b40-font-tracking-widest);
  text-transform: uppercase;
  color: var(--b40-color-text-primary);
}
.pitstop__features p {
  margin: 0;
  font-size: var(--b40-font-size-sm);
  color: var(--b40-color-text-tertiary);
}

@media (max-width: 880px) {
  .pitstop__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq { background: var(--b40-color-surface-base); padding: clamp(64px, 9vw, 110px) 0; }
.faq__grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: start;
}
.faq__intro p { color: var(--b40-color-text-tertiary); margin-bottom: 1.8em; }
.faq__list { display: grid; gap: 8px; }
.faq__list details {
  background: var(--b40-color-surface-raised);
  border: 1px solid var(--b40-color-border-default);
  border-radius: var(--b40-radius-sm);
  box-shadow: var(--b40-shadow-edge-top);
  padding: 0 20px;
}
.faq__list details[open] { border-left: 2px solid var(--b40-color-brand-primary); }
.faq__list summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-lg);
  letter-spacing: var(--b40-font-tracking-wide);
  text-transform: uppercase;
  padding: 15px 28px 15px 0;
  position: relative;
}
.faq__list summary::-webkit-details-marker { display: none; }
.faq__list summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--b40-color-brand-primary);
  font-family: var(--b40-font-family-mono);
  font-size: var(--b40-font-size-xl);
}
.faq__list details[open] summary::after { content: "–"; }
.faq__list details p {
  color: var(--b40-color-text-tertiary);
  font-size: var(--b40-font-size-sm);
  padding-bottom: 16px;
  margin: 0;
}
.faq__list details p a { color: var(--b40-color-text-brand); font-weight: var(--b40-font-weight-medium); }

@media (max-width: 880px) {
  .faq__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Support
   ========================================================================== */
.support {
  background: var(--b40-color-surface-raised);
  border-top: 1px solid var(--b40-color-border-default);
  border-bottom: 1px solid var(--b40-color-border-default);
  padding: clamp(64px, 9vw, 110px) 0;
}
.support__grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: start;
}
.support__text p { color: var(--b40-color-text-secondary); }
.support__links { list-style: none; margin: 1.6em 0 0; padding: 0; }
.support__links li:last-child a { border-bottom: 1px solid var(--b40-color-border-default); }
.support__links a {
  display: block;
  border-top: 1px solid var(--b40-color-border-default);
  padding: 12px 0;
  color: var(--b40-color-text-secondary);
  text-decoration: none;
  font-size: var(--b40-font-size-sm);
  transition: color var(--b40-motion-duration-fast) var(--b40-motion-easing-ease-out);
}
.support__links a::before { content: "›"; color: var(--b40-color-brand-primary); font-weight: var(--b40-font-weight-bold); margin-right: 12px; }
.support__links a:hover { color: var(--b40-color-text-brand); }

.support__card {
  background: var(--metal);
  border: 1px solid var(--metal-border);
  border-top: 2px solid var(--b40-color-brand-primary);
  border-radius: var(--b40-radius-md);
  box-shadow: var(--metal-edge), var(--b40-shadow-lg);
  padding: 28px 28px 22px;
}
.support__card h3 { font-size: var(--b40-font-size-2xl); }
.support__card-sub { color: var(--b40-color-text-tertiary); font-size: var(--b40-font-size-sm); }
.support__contact {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--metal-border);
  text-decoration: none;
  font-family: var(--b40-font-family-mono);
  font-weight: var(--b40-font-weight-medium);
  font-size: var(--b40-font-size-sm);
  color: var(--b40-color-text-data);
  transition: color var(--b40-motion-duration-fast) var(--b40-motion-easing-ease-out);
}
.support__contact:hover { color: var(--b40-color-text-brand); }
.support__contact-icon { color: var(--b40-color-brand-primary); display: grid; place-items: center; }
.support__contact-icon svg { width: 16px; height: 16px; }
.support__card-note {
  margin: 16px 0 0;
  font-size: var(--b40-font-size-xs);
  color: var(--b40-color-text-tertiary);
  font-style: italic;
}

@media (max-width: 880px) {
  .support__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   About
   ========================================================================== */
.about { background: var(--b40-color-surface-base); padding: clamp(64px, 9vw, 110px) 0; }
.about__grid {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
}
.about__figure { margin: 0; }
.about__figure img {
  border-radius: var(--b40-radius-md);
  border: 1px solid var(--b40-color-border-default);
  box-shadow: var(--b40-shadow-lg);
}
.checklist { list-style: none; margin: 0 0 1.8em; padding: 0; display: grid; gap: 12px; }
.checklist li {
  padding-left: 34px;
  position: relative;
  font-size: var(--b40-font-size-md);
  color: var(--b40-color-text-secondary);
}
.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  width: 22px;
  height: 22px;
  border-radius: var(--b40-radius-xs);
  background: var(--b40-color-status-success-surface);
  border: 1px solid var(--b40-color-dataviz-gauge-safe);
  color: var(--b40-color-dataviz-gauge-safe);
  font-size: var(--b40-font-size-xs);
  display: grid;
  place-items: center;
  box-shadow: 0 0 5px 1px rgba(109, 217, 138, .25);
}
.about__sig { color: var(--b40-color-text-tertiary); font-size: var(--b40-font-size-sm); }
.about__sig strong {
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-bold);
  font-size: var(--b40-font-size-lg);
  letter-spacing: var(--b40-font-tracking-wide);
  text-transform: uppercase;
  color: var(--b40-color-text-primary);
}

@media (max-width: 880px) {
  .about__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   CTA banner — brand gradient (logo-mark treatment)
   ========================================================================== */
.cta {
  background: linear-gradient(135deg, var(--b40-color-brand-primary) 0%, var(--gold-400) 100%);
  padding: clamp(44px, 6vw, 70px) 0;
}
.cta__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.cta h2 {
  margin: 0;
  color: var(--b40-color-orange-950);
  font-style: oblique 8deg;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
}
.cta .btn--dark {
  background: var(--b40-color-surface-base);
  border-color: var(--b40-color-surface-base);
  color: var(--b40-color-text-brand);
}
.cta .btn--dark:hover { background: var(--b40-color-surface-raised); box-shadow: var(--b40-shadow-lg); }

/* ==========================================================================
   Footer — metal chrome
   ========================================================================== */
.footer {
  background: var(--metal);
  border-top: 1px solid var(--metal-border);
  box-shadow: var(--metal-edge);
  color: var(--b40-color-text-secondary);
  padding: clamp(48px, 7vw, 80px) 0 0;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer__brand img { height: 44px; width: auto; margin-bottom: 16px; }
.footer__brand p { font-size: var(--b40-font-size-sm); color: var(--b40-color-text-tertiary); max-width: 300px; }
.footer__col h4 {
  color: var(--b40-color-text-brand);
  font-size: var(--b40-font-size-xs);
  letter-spacing: var(--b40-font-tracking-widest);
  margin-bottom: 1.2em;
}
.footer__col a {
  display: block;
  color: var(--b40-color-text-secondary);
  text-decoration: none;
  font-size: var(--b40-font-size-sm);
  padding: 5px 0;
  transition: color var(--b40-motion-duration-fast) var(--b40-motion-easing-ease-out);
}
.footer__col a:hover { color: var(--b40-color-text-brand); }
.footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--metal-border);
  padding-top: 20px;
  padding-bottom: 20px;
  font-family: var(--b40-font-family-mono);
  font-size: var(--b40-font-size-xs);
  color: var(--b40-color-text-tertiary);
}
.footer__legal p { margin: 0; }
.footer__tag {
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-bold);
  font-style: oblique 8deg;
  color: var(--b40-color-text-brand);
  text-transform: uppercase;
  letter-spacing: var(--b40-font-tracking-widest);
}

@media (max-width: 880px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .footer__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Inner pages — page-hero, product, shop-section, breadcrumb, variation
   ========================================================================== */

.page-hero {
  background: var(--metal);
  border-bottom: 1px solid var(--metal-border);
  box-shadow: var(--metal-edge);
  padding: clamp(40px, 6vw, 72px) 0;
}
.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-style: oblique 8deg;
  margin-bottom: .3em;
}
.page-hero--product { padding: 24px 0 0; }
.page-hero__sub {
  color: var(--b40-color-text-secondary);
  font-size: var(--b40-font-size-lg);
  max-width: 560px;
  margin: 0;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--b40-font-family-display);
  font-size: var(--b40-font-size-xs);
  letter-spacing: var(--b40-font-tracking-widest);
  text-transform: uppercase;
  color: var(--b40-color-text-tertiary);
  padding-bottom: 18px;
}
.breadcrumb a { color: var(--b40-color-text-brand); text-decoration: none; }
.breadcrumb a:hover { color: var(--b40-color-brand-primary-active); }
.breadcrumb span { color: var(--b40-color-border-strong); }

/* Product layout */
.product { padding: clamp(48px, 7vw, 80px) 0; }
.product__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 5vw, 64px);
  align-items: start;
}
.product__figure {
  border-radius: var(--b40-radius-md);
  border: 1px solid var(--b40-color-border-default);
  overflow: hidden;
  box-shadow: var(--b40-shadow-lg);
}
.product__figure img { width: 100%; display: block; }
.product__figure--placeholder {
  aspect-ratio: 1;
  background: var(--b40-color-surface-sunken);
  display: grid;
  place-items: center;
  box-shadow: var(--b40-shadow-inner);
}
.product__name {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-style: oblique 8deg;
  margin-bottom: .5em;
}
.product__desc {
  color: var(--b40-color-text-secondary);
  font-size: var(--b40-font-size-md);
  margin-bottom: 1.6em;
  line-height: var(--b40-font-lineheight-relaxed);
}

/* Variations */
.variations { display: grid; gap: 12px; margin-bottom: 1.6em; }
.variation {
  background: var(--b40-color-surface-raised);
  border: 1px solid var(--b40-color-border-default);
  border-left: 2px solid var(--b40-color-brand-primary);
  border-radius: var(--b40-radius-xs);
  box-shadow: var(--b40-shadow-edge-top);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.variation__meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.variation__name {
  font-family: var(--b40-font-family-display);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-lg);
  letter-spacing: var(--b40-font-tracking-wide);
  text-transform: uppercase;
}
.variation__price {
  font-family: var(--b40-font-family-mono);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-2xl);
  color: var(--b40-color-text-data);
}
.variation__stock {
  font-family: var(--b40-font-family-mono);
  font-size: var(--b40-font-size-xs);
  letter-spacing: var(--b40-font-tracking-wide);
  color: var(--b40-color-text-tertiary);
}

/* Stock status dot */
.sdot {
  width: 8px; height: 8px;
  border-radius: var(--b40-radius-full);
  flex-shrink: 0;
}
.sdot.safe   { background: var(--b40-color-dataviz-gauge-safe);    box-shadow: 0 0 5px 1px rgba(109,217,138,.45); }
.sdot.warn   { background: var(--b40-color-dataviz-gauge-caution); box-shadow: 0 0 5px 1px rgba(252,208,101,.45); }
.sdot.danger { background: var(--b40-color-dataviz-gauge-danger);  box-shadow: 0 0 5px 1px rgba(246, 144, 122,.45); }

.product__multi-note {
  font-size: var(--b40-font-size-sm);
  color: var(--b40-color-text-tertiary);
  border-top: 1px solid var(--b40-color-border-default);
  padding-top: 1.2em;
}
.product__multi-note a { color: var(--b40-color-text-brand); text-decoration: none; }

/* Card out-of-stock */
.card--oos { opacity: .65; }
.badge--oos {
  background: var(--b40-color-status-error-surface);
  color: var(--b40-color-status-error);
  border: 1px solid var(--b40-color-dataviz-gauge-danger);
}

/* Card price */
.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 10px;
}
.card__price {
  font-family: var(--b40-font-family-mono);
  font-weight: var(--b40-font-weight-semibold);
  font-size: var(--b40-font-size-lg);
  color: var(--b40-color-text-data);
}

/* Shop section groups */
.shop-section { padding: clamp(40px, 6vw, 64px) 0 0; }
.shop-section:last-of-type { padding-bottom: clamp(40px, 6vw, 64px); }
.shop-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--b40-color-border-default);
  padding-bottom: 12px;
}
.shop-section__head h2 {
  font-size: var(--b40-font-size-2xl);
  letter-spacing: var(--b40-font-tracking-widest);
  margin: 0;
}
.shop-section__count {
  font-family: var(--b40-font-family-mono);
  font-size: var(--b40-font-size-xs);
  color: var(--b40-color-text-tertiary);
}

@media (max-width: 880px) {
  .product__grid { grid-template-columns: 1fr; }
}