/* ==========================================================================
   SALINITY — DESIGN 4 "MINERAL"
   Precision lab / scientific-tech. Cultured-pearl surfaces, navy ink,
   coral as the precision-instrument accent.
   ========================================================================== */

:root {
  /* Brand — exact */
  --color-primary: #fd7f71;
  --color-primary-dark: #e06858;
  --color-primary-light: #ffa99e;
  --color-navy: #14233c;
  --color-navy-dark: #0e1a2d;
  --color-red: #A42325;
  --color-cream: #fcf5f4;
  --color-dark: #1a1a1a;
  --color-dark-secondary: #353235;
  --color-shadow-blue: #718da5;
  --color-cultured-pearl: #f2f5f7;
  --color-white: #ffffff;
  --color-gray-100: #fef8f6;
  --color-gray-200: #f0e6e3;
  --color-gray-300: #ddcccc;
  --color-gray-400: #aaaaaa;
  --color-gray-500: #888888;
  --color-gray-600: #666666;
  --color-gray-700: #444444;

  --font-heading: "roc-grotesk-extrawide", sans-serif;
  --font-subheading: "roc-grotesk-extrawide", sans-serif;
  --font-family: "roc-grotesk", sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  --t-fast: .2s ease;
  --t-med: .3s ease;
  --t-slow: .5s ease;
  --t-smooth: .6s cubic-bezier(.16, 1, .3, 1);

  --container-max: 1400px;
  --container-pad: 24px;

  /* Mineral system */
  --ink: var(--color-navy);
  --ink-soft: rgba(20, 35, 60, .62);
  --hairline: rgba(20, 35, 60, .16);
  --hairline-strong: rgba(20, 35, 60, .32);
  --grid-line: rgba(113, 141, 165, .14);
  --grid-line-major: rgba(113, 141, 165, .22);
  --surface: var(--color-cultured-pearl);
  --mono-label: .68rem;
  --header-h: 64px;
  --tabbar-h: calc(60px + env(safe-area-inset-bottom, 0px));
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html:focus-within { scroll-behavior: smooth; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; }
input { font: inherit; }

body {
  font-family: var(--font-family);
  font-weight: 400;
  color: var(--ink);
  background-color: var(--surface);
  /* blueprint graph-paper grid */
  background-image:
    linear-gradient(var(--grid-line-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-major) 1px, transparent 1px),
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  line-height: 1.6;
  padding-bottom: var(--tabbar-h);
  overflow-x: clip;
}

.nowrap { white-space: nowrap; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

::selection { background: var(--color-primary); color: var(--color-white); }

:focus-visible { outline: 2px solid var(--color-primary-dark); outline-offset: 3px; }

/* ---------- Micro components ---------- */
.dot {
  display: inline-block; width: 7px; height: 7px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  flex: none;
}
.dot--pulse { animation: pulse 1.6s ease-in-out infinite; }
.dot--lab { background: var(--color-primary); box-shadow: 0 0 0 4px rgba(253, 127, 113, .18); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .25; } }

.caret {
  display: inline-block; width: 8px; height: 14px;
  background: var(--color-primary);
  margin-left: 4px; vertical-align: -2px;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.badge {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-family);
  font-size: var(--mono-label); font-weight: 700;
  letter-spacing: .22em;
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
  background: var(--color-white);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--font-family);
  font-weight: 700;
  font-size: .8rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 15px 30px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background-color var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
  position: relative;
}
.btn--solid {
  background: var(--color-navy);
  color: var(--color-white);
}
.btn--solid:hover { background: var(--color-primary-dark); }
.btn--solid:active { transform: translateY(1px); }
.btn--ghost {
  border-color: var(--hairline-strong);
  color: var(--ink);
  background: transparent;
}
.btn--ghost:hover { border-color: var(--color-primary-dark); color: var(--color-primary-dark); }
.btn--sm { padding: 11px 18px; font-size: .72rem; }
.btn--full { width: 100%; }

/* corner ticks on solid buttons */
.btn--solid::before, .btn--solid::after {
  content: ""; position: absolute; width: 5px; height: 5px;
  border: 1px solid var(--color-primary);
  transition: opacity var(--t-fast);
}
.btn--solid::before { top: -3px; left: -3px; border-right: 0; border-bottom: 0; }
.btn--solid::after { bottom: -3px; right: -3px; border-left: 0; border-top: 0; }

/* hairline frame + registration marks */
.hairline-frame {
  position: relative;
  border: 1px solid var(--hairline);
  background: var(--color-white);
}
.reg { position: absolute; width: 14px; height: 14px; pointer-events: none; z-index: 3; }
.reg::before, .reg::after { content: ""; position: absolute; background: var(--ink); }
.reg::before { width: 14px; height: 1px; top: 7px; }
.reg::after { width: 1px; height: 14px; left: 7px; }
.reg--tl { top: -7px; left: -7px; }
.reg--tr { top: -7px; right: -7px; }
.reg--bl { bottom: -7px; left: -7px; }
.reg--br { bottom: -7px; right: -7px; }

.crosshair-mark {
  display: inline-block; position: relative;
  width: 22px; height: 22px; flex: none;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-pill);
}
.crosshair-mark::before, .crosshair-mark::after {
  content: ""; position: absolute; background: var(--hairline-strong);
}
.crosshair-mark::before { left: 50%; top: -5px; bottom: -5px; width: 1px; }
.crosshair-mark::after { top: 50%; left: -5px; right: -5px; height: 1px; }
.crosshair-mark--coral { border-color: var(--color-primary); }
.crosshair-mark--coral::before, .crosshair-mark--coral::after { background: var(--color-primary); }

/* section rail (coordinate labels) */
.sec-rail {
  display: flex; align-items: center; gap: 14px;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 0 var(--container-pad) 18px;
  font-size: .62rem; font-weight: 700;
  letter-spacing: .26em;
  color: var(--ink-soft);
  text-transform: uppercase;
  white-space: nowrap;
}
.sec-rail__line { flex: 1; height: 1px; background: var(--hairline); min-width: 24px; }
.sec-rail span:last-child { min-width: 0; flex-shrink: 1; overflow: hidden; text-overflow: ellipsis; }

/* guard rails: never let grid/flex tracks blow out past the viewport */
.hero__inner > *,
.panel__grid > *,
.family__grid > *,
.analysis__stage > *,
.footer__top > *,
.sec-head--row > * { min-width: 0; }

/* section heads */
.sec-head { margin-bottom: 40px; }
.sec-head__label {
  font-size: var(--mono-label); font-weight: 700;
  letter-spacing: .24em; color: var(--color-primary-dark);
  margin-bottom: 14px;
}
.sec-head__label--light { color: var(--color-primary); }
.sec-head__title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.2rem, 4.2vw, 2.7rem);
  line-height: 1.06;
  letter-spacing: .01em;
  color: var(--ink);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.sec-head__title .accent { color: var(--color-primary); }
.sec-head__copy { max-width: 560px; color: var(--ink-soft); margin-bottom: 26px; }
.sec-head__copy strong { color: var(--ink); }
.sec-head__copy--wide { max-width: 760px; }
.sec-head--row {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 20px;
}
.sec-head--row .sec-head__title { margin-bottom: 0; }

.frame-counter {
  font-size: .68rem; font-weight: 700; letter-spacing: .3em;
  color: var(--ink-soft);
  border: 1px solid var(--hairline);
  background: var(--color-white);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
.frame-counter span { color: var(--color-primary-dark); }

/* scan-line image reveal */
.scan-reveal { position: relative; overflow: hidden; }
.scan-reveal img {
  clip-path: inset(0 0 100% 0);
  transition: none;
}
.scan-reveal::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: var(--color-primary);
  box-shadow: 0 0 18px 2px rgba(253, 127, 113, .65);
  transform: translateY(-6px);
  opacity: 0;
  pointer-events: none;
  z-index: 2;
}
.scan-reveal.is-scanned img { animation: scanClip 1s cubic-bezier(.16, 1, .3, 1) forwards; }
.scan-reveal.is-scanned::after { animation: scanBar 1s cubic-bezier(.16, 1, .3, 1) forwards; }
@keyframes scanClip { from { clip-path: inset(0 0 100% 0); } to { clip-path: inset(0 0 0% 0); } }
@keyframes scanBar {
  0% { opacity: 1; top: 0; transform: translateY(-4px); }
  92% { opacity: 1; }
  100% { opacity: 0; top: 100%; transform: translateY(0); }
}

/* generic reveal */
[data-reveal] { opacity: 0; transform: translateY(26px); }
[data-reveal].is-inview {
  opacity: 1; transform: none;
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}

/* ==========================================================================
   ANNOUNCEMENT
   ========================================================================== */
.announce {
  background: var(--color-navy);
  color: var(--color-cultured-pearl);
  overflow: hidden;
  border-bottom: 1px solid var(--color-navy-dark);
}
.announce__track { display: flex; width: max-content; animation: ticker 28s linear infinite; }
.announce__seq { display: flex; flex: none; }
.announce__item {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .62rem; font-weight: 700;
  letter-spacing: .3em;
  padding: 9px 0;
  white-space: nowrap;
}
.announce__item::after {
  content: "+"; color: var(--color-primary);
  margin-inline: 26px; letter-spacing: 0;
}
@keyframes ticker { to { transform: translateX(-50%); } }

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline);
  transition: transform .35s cubic-bezier(.16,1,.3,1);
}
.header.is-hidden { transform: translateY(-100%); }
.header__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.header__logo img { width: 132px; height: auto; }
.header__nav { display: none; }
.header__actions { display: flex; align-items: center; gap: 6px; }
.header__account {
  display: none;
  font-size: .72rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase;
  padding: 8px 12px;
  color: var(--ink-soft);
  transition: color var(--t-fast);
}
.header__account:hover { color: var(--color-primary-dark); }
.header__cart {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  transition: border-color var(--t-fast), color var(--t-fast);
}
.header__cart:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }
.cart-count {
  position: absolute; top: -7px; right: -7px;
  min-width: 18px; height: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .6rem; font-weight: 700;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-pill);
  padding-inline: 4px;
  transition: transform var(--t-fast);
}
.cart-count.is-bumped { animation: bump .35s cubic-bezier(.16,1,.3,1); }
@keyframes bump { 40% { transform: scale(1.5); } }

.header__menu {
  display: inline-flex; flex-direction: column; gap: 5px;
  align-items: center; justify-content: center;
  width: 42px; height: 42px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: var(--color-white);
}
.header__menu span {
  width: 16px; height: 1.5px; background: var(--ink);
  transition: transform var(--t-med), opacity var(--t-med);
}
.header__menu[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.header__menu[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* mobile nav */
.mobile-nav {
  position: fixed; inset: 0; z-index: 55;
  background: var(--color-cultured-pearl);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
  padding: calc(var(--header-h) + 60px) var(--container-pad) 40px;
  display: flex; flex-direction: column; gap: 4px;
  opacity: 0; visibility: hidden;
  transition: opacity var(--t-med), visibility var(--t-med);
}
.mobile-nav.is-open { opacity: 1; visibility: visible; }
.mobile-nav__label {
  font-size: var(--mono-label); font-weight: 700; letter-spacing: .26em;
  color: var(--color-primary-dark);
  margin-bottom: 18px;
}
.mobile-nav a {
  display: flex; align-items: baseline; gap: 16px;
  font-family: var(--font-heading);
  font-weight: 700; font-size: 1.35rem; text-transform: uppercase;
  padding: 12px 0;
  border-bottom: 1px solid var(--hairline);
  transform: translateY(14px); opacity: 0;
  transition: transform var(--t-smooth), opacity var(--t-smooth), color var(--t-fast);
}
.mobile-nav.is-open a { transform: none; opacity: 1; }
.mobile-nav.is-open a:nth-child(2) { transition-delay: .04s; }
.mobile-nav.is-open a:nth-child(3) { transition-delay: .08s; }
.mobile-nav.is-open a:nth-child(4) { transition-delay: .12s; }
.mobile-nav.is-open a:nth-child(5) { transition-delay: .16s; }
.mobile-nav.is-open a:nth-child(6) { transition-delay: .2s; }
.mobile-nav.is-open a:nth-child(7) { transition-delay: .24s; }
.mobile-nav.is-open a:nth-child(8) { transition-delay: .28s; }
.mobile-nav a:hover { color: var(--color-primary-dark); }
.mobile-nav a span {
  font-family: var(--font-family);
  font-size: .68rem; font-weight: 700; letter-spacing: .2em;
  color: var(--color-primary-dark);
}

/* ==========================================================================
   SEC.01 — HERO
   ========================================================================== */
.hero { position: relative; padding: 40px 0 72px; overflow: clip; }
.hero__grid-bg { position: absolute; inset: 0; pointer-events: none; }

.hero__crosshair { position: absolute; background: rgba(253, 127, 113, .35); pointer-events: none; z-index: 1; }
.hero__crosshair--x { top: 0; bottom: 0; width: 1px; left: 50%; }
.hero__crosshair--y { left: 0; right: 0; height: 1px; top: 50%; }

.hero__inner { position: relative; z-index: 2; display: grid; gap: 48px; }

.hero__copy { padding-top: 18px; }
.hero__title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.12rem, 5vw, 3.3rem);
  line-height: 1.08;
  text-transform: uppercase;
  margin: 26px 0 22px;
}
.hero__title-line { display: block; overflow: hidden; }
.hero__title-line > span { display: inline-block; transform: translateY(110%); }
.hero__title-line--accent > span { color: var(--color-primary-dark); }
body.is-loaded .hero__title-line > span { animation: riseIn .9s cubic-bezier(.16,1,.3,1) forwards; }
body.is-loaded .hero__title-line--accent > span { animation-delay: .12s; }
@keyframes riseIn { to { transform: none; } }

.hero__lede { max-width: 520px; color: var(--ink-soft); margin-bottom: 30px; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }

.hero__readout {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  font-size: .68rem; font-weight: 700; letter-spacing: .18em;
  color: var(--ink-soft);
  border-top: 1px solid var(--hairline);
  padding-top: 16px;
  min-height: 34px;
}
.hero__readout-label { color: var(--color-primary-dark); letter-spacing: .26em; }
.hero__readout-type {
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  flex: 1;
  min-width: 0;
}

/* schematic stage */
.hero__stage { position: relative; }
.schematic {
  position: relative;
  max-width: 560px;
  margin-inline: auto;
  border: 1px solid var(--hairline-strong);
  background: var(--color-white);
  padding: clamp(28px, 6vw, 48px);
}
.orbits {
  position: absolute; inset: -12%;
  width: 124%; height: 124%;
  pointer-events: none; z-index: 2;
}
.orbits__ring ellipse {
  fill: none;
  stroke: rgba(113, 141, 165, .45);
  stroke-width: 1;
  stroke-dasharray: 3 6;
}
.ion circle { fill: var(--color-white); stroke: var(--color-navy); stroke-width: 1.25; }
.ion text {
  font-family: var(--font-family);
  font-size: 13px; font-weight: 700;
  letter-spacing: .04em;
  fill: var(--color-navy);
  text-anchor: middle;
}
.ion--na circle { fill: var(--color-primary); stroke: var(--color-primary-dark); }
.ion--na text { fill: var(--color-white); }
.ion--k circle { fill: var(--color-navy); }
.ion--k text { fill: var(--color-white); }

.schematic__viewport {
  position: relative; z-index: 1;
  border: 1px solid var(--hairline);
}
.schematic__viewport img { width: 100%; }

/* dimension annotations */
.dim {
  position: absolute;
  display: flex; align-items: center; gap: 8px;
  font-size: .58rem; font-weight: 700; letter-spacing: .24em;
  color: var(--ink-soft);
  white-space: nowrap; z-index: 3;
}
.dim i { display: block; height: 1px; width: 26px; background: var(--hairline-strong); position: relative; }
.dim i::before, .dim i::after {
  content: ""; position: absolute; top: -3px; width: 1px; height: 7px;
  background: var(--hairline-strong);
}
.dim i::before { left: 0; }
.dim i::after { right: 0; }
.dim--w { bottom: 10px; left: 50%; transform: translateX(-50%); }
.dim--h {
  top: 50%; right: 6px;
  transform: rotate(90deg) translateX(-50%);
  transform-origin: right center;
}
.spec-tag {
  position: absolute;
  font-size: .56rem; font-weight: 700; letter-spacing: .22em;
  color: var(--color-navy);
  background: var(--color-cultured-pearl);
  border: 1px solid var(--hairline);
  padding: 5px 9px;
  z-index: 3;
}
.spec-tag--a { top: 14px; left: 14px; }
.spec-tag--b { top: 14px; right: 14px; }

.hero__coords {
  margin-top: 14px;
  text-align: right;
  font-size: .6rem; font-weight: 700; letter-spacing: .3em;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   SEC.02 — SALT IN / SALT OUT
   ========================================================================== */
.saltio { padding: 72px 0; }
.saltio__frame { padding: clamp(26px, 5vw, 64px); }
.saltio__row {
  display: flex; align-items: center; gap: clamp(12px, 4vw, 40px);
}
.saltio__row--out { justify-content: flex-end; }
.saltio__idx {
  font-size: .6rem; font-weight: 700; letter-spacing: .3em;
  color: var(--color-primary-dark);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}
.saltio__word {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.2rem, 5.8vw, 5rem);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: .01em;
}
.saltio__word--accent {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--color-primary-dark);
}
.saltio__arrow {
  display: none;
  font-size: clamp(1.3rem, 4vw, 2.6rem);
  color: var(--color-primary);
  line-height: 1;
}
@media (min-width: 600px) { .saltio__arrow { display: block; } }
.saltio__divider {
  display: flex; align-items: center; gap: 18px;
  margin: clamp(18px, 3vw, 32px) 0;
}
.saltio__divider::before, .saltio__divider::after {
  content: ""; flex: 1; height: 1px; background: var(--hairline);
}
.saltio__copy {
  margin-top: 30px;
  max-width: 620px;
  font-size: clamp(1.05rem, 2.6vw, 1.45rem);
  line-height: 1.5;
  color: var(--ink-soft);
}
.saltio__copy em {
  font-style: normal; font-weight: 700;
  color: var(--color-primary-dark);
  border-bottom: 2px solid var(--color-primary);
}

/* ==========================================================================
   SEC.03 — WHY SALINITY (collections)
   ========================================================================== */
.why { padding: 72px 0; }
.why__carousel-wrap { position: relative; }
.why__carousel {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 82%;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-bottom: 8px;
  margin-inline: calc(var(--container-pad) * -1);
  padding-inline: var(--container-pad);
}
.why__carousel::-webkit-scrollbar { display: none; }
.why__carousel > * { scroll-snap-align: center; }

.collection-card {
  display: block;
  border: 1px solid var(--hairline);
  background: var(--color-white);
  transition: border-color var(--t-fast);
}
.collection-card:hover { border-color: var(--color-primary); }
.collection-card__media { aspect-ratio: 1 / 1; }
.collection-card__media img { width: 100%; height: 100%; object-fit: cover; }
.collection-card__meta {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 18px;
  border-top: 1px solid var(--hairline);
}
.collection-card__idx {
  font-size: .6rem; font-weight: 700; letter-spacing: .26em;
  color: var(--color-primary-dark);
}
.collection-card__meta h3 {
  font-family: var(--font-subheading);
  font-weight: 700; font-size: .95rem;
  text-transform: uppercase;
  flex: 1;
}
.collection-card__go { color: var(--color-primary-dark); transition: transform var(--t-fast); }
.collection-card:hover .collection-card__go { transform: translateX(4px); }

.why .frame-counter { position: absolute; top: -52px; right: 0; }

/* ==========================================================================
   SEC.04 — SHOP / SPECIMENS
   ========================================================================== */
.shop { padding: 72px 0; }
.shop__carousel {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 86%;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  margin-inline: calc(var(--container-pad) * -1);
  padding: 10px var(--container-pad) 12px;
}
.shop__carousel::-webkit-scrollbar { display: none; }
.shop__carousel > * { scroll-snap-align: center; }

.product-card { display: flex; flex-direction: column; }
.product-card__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--hairline);
}
.product-card__code {
  font-size: .62rem; font-weight: 700; letter-spacing: .26em;
  color: var(--ink-soft);
}
.product-card__media { border-bottom: 1px solid var(--hairline); }
.product-card__media img { width: 100%; }
.product-card__body { padding: 20px 18px 22px; display: flex; flex-direction: column; gap: 10px; }
.product-card__name {
  font-family: var(--font-subheading);
  font-weight: 800; font-size: 1.25rem;
  text-transform: uppercase;
}
.product-card__spec {
  font-size: .62rem; font-weight: 700; letter-spacing: .2em;
  color: var(--ink-soft);
}
.product-card__row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-top: 6px;
}
.product-card__price {
  font-family: var(--font-family);
  font-weight: 700; font-size: 1.1rem;
  font-variant-numeric: tabular-nums;
}
.product-card__details {
  font-size: .74rem; font-weight: 700; letter-spacing: .12em;
  color: var(--color-primary-dark);
  text-transform: uppercase;
  margin-top: 4px;
  transition: color var(--t-fast);
}
.product-card__details:hover { color: var(--color-navy); }

/* ==========================================================================
   SEC.05 — ANALYSIS (No Shade)
   ========================================================================== */
.analysis { padding: 72px 0 0; }
.analysis__pinwrap { position: relative; }
.analysis__stage {
  display: grid; gap: 36px;
  padding-top: 10px; padding-bottom: 64px;
}
.analysis__subject { position: relative; max-width: 460px; margin-inline: auto; width: 100%; }
.analysis__tubframe {
  position: relative;
  border: 1px solid var(--hairline-strong);
  background: var(--color-white);
  padding: 16px;
  overflow: hidden;
}
.analysis__tubframe img { width: 100%; border: 1px solid var(--hairline); }
.analysis__scanline {
  position: absolute; left: 0; right: 0; top: 4%; height: 2px;
  background: var(--color-primary);
  box-shadow: 0 0 14px 1px rgba(253, 127, 113, .6);
  animation: sweep 4.5s ease-in-out infinite;
  opacity: .85;
}
@keyframes sweep {
  0%, 100% { top: 4%; }
  50% { top: 94%; }
}
.analysis__progress {
  display: flex; align-items: center; gap: 12px;
  margin-top: 14px;
  font-size: .6rem; font-weight: 700; letter-spacing: .26em;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}
.analysis__progress-track {
  flex: 1; height: 4px;
  background: var(--color-white);
  border: 1px solid var(--hairline);
  position: relative;
}
.analysis__progress-track span {
  position: absolute; inset: 0;
  background: var(--color-primary);
  transform-origin: left center;
  transform: scaleX(0);
}

.analysis__callouts { display: grid; gap: 14px; }
.callout { position: relative; display: flex; align-items: center; }
.callout__line {
  width: 34px; height: 1px;
  background: var(--color-primary-dark);
  transform-origin: left center;
  flex: none;
  display: none;
}
.callout__dot {
  width: 9px; height: 9px; flex: none;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(253, 127, 113, .16);
  margin-right: 14px;
}
.callout__card {
  flex: 1;
  display: flex; align-items: center; gap: 14px;
  background: var(--color-white);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--color-primary);
  padding: 14px 16px;
}
.callout__card img { width: 36px; height: 36px; object-fit: contain; flex: none; }
.callout__idx {
  display: block;
  font-size: .58rem; font-weight: 700; letter-spacing: .26em;
  color: var(--color-primary-dark);
  margin-bottom: 2px;
}
.callout__card h3 {
  font-family: var(--font-family);
  font-weight: 700; font-size: .92rem;
  line-height: 1.3;
}

/* ==========================================================================
   SEC.06 — ELECTROLYTE PANEL (navy lab report)
   ========================================================================== */
.panel {
  background: var(--color-navy);
  background-image:
    linear-gradient(rgba(113, 141, 165, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(113, 141, 165, .12) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--color-cultured-pearl);
  padding: 64px 0 88px;
  margin-top: 72px;
}
.sec-rail--light { color: rgba(242, 245, 247, .55); }
.sec-rail--light .sec-rail__line { background: rgba(242, 245, 247, .18); }

.panel__grid { display: grid; gap: 40px; }
.panel__report {
  background: var(--color-navy-dark);
  border: 1px solid rgba(113, 141, 165, .35);
  padding: clamp(22px, 4vw, 44px);
}
.panel__report-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 16px;
  border-bottom: 1px solid rgba(113, 141, 165, .3);
  padding-bottom: 22px;
  margin-bottom: 28px;
}
.panel__title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.15rem, 3.8vw, 2.1rem);
  text-transform: uppercase;
  color: var(--color-white);
  line-height: 1.05;
}
.panel__report-status {
  display: flex; align-items: center; gap: 10px;
  font-size: .6rem; font-weight: 700; letter-spacing: .26em;
  color: var(--color-primary-light);
  white-space: nowrap;
  padding-top: 6px;
}

.gauges { display: grid; gap: 18px; }
.gauge {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(113, 141, 165, .25);
}
.gauge:last-child { border-bottom: 0; }
.gauge__symbol {
  flex: none;
  width: 48px; height: 48px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid rgba(113, 141, 165, .45);
  background: rgba(113, 141, 165, .08);
  font-family: var(--font-subheading);
  font-weight: 700;
  font-size: .82rem;
  color: var(--color-white);
  letter-spacing: .02em;
}
.gauge__main { flex: 1; min-width: 0; }
.gauge__top {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px;
  margin-bottom: 9px;
}
.gauge__label {
  font-size: .62rem; font-weight: 700; letter-spacing: .18em;
  color: rgba(242, 245, 247, .72);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
@media (min-width: 768px) {
  .gauge__symbol { width: 58px; height: 58px; }
  .gauge__label { font-size: .68rem; letter-spacing: .24em; }
}
.gauge__amount {
  font-family: var(--font-family);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-white);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.gauge__amount .gauge__num { color: var(--color-primary-light); }
.gauge__track {
  position: relative;
  height: 10px;
  background: rgba(113, 141, 165, .14);
  border: 1px solid rgba(113, 141, 165, .3);
  /* tick marks */
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0,
    transparent calc(10% - 1px),
    rgba(113, 141, 165, .35) calc(10% - 1px),
    rgba(113, 141, 165, .35) 10%
  );
}
.gauge__fill {
  position: absolute; inset: 1px auto 1px 1px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary));
  transform-origin: left center;
  transform: scaleX(0);
}

.panel__vitamins {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  margin-top: 30px;
  border-top: 1px solid rgba(113, 141, 165, .3);
  padding-top: 26px;
}
.panel__vitamins .crosshair-mark { border-color: var(--color-primary); }
.panel__vitamins .crosshair-mark::before,
.panel__vitamins .crosshair-mark::after { background: var(--color-primary); }
.panel__vitamins-title {
  font-family: var(--font-subheading);
  font-weight: 700;
  font-size: clamp(.85rem, 2.6vw, 1.1rem);
  text-transform: uppercase;
  color: var(--color-white);
  letter-spacing: .04em;
}
.panel__vitamins-sub {
  font-size: .78rem; font-weight: 700; letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  border: 1px solid rgba(253, 127, 113, .45);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
}

.panel__media {
  position: relative;
  border: 1px solid rgba(113, 141, 165, .35);
  background: var(--color-navy-dark);
  align-self: start;
}
.panel__media img { width: 100%; }
.panel__media-tag {
  position: absolute; bottom: 12px; left: 12px;
  font-size: .58rem; font-weight: 700; letter-spacing: .26em;
  color: var(--color-cultured-pearl);
  background: rgba(14, 26, 45, .85);
  border: 1px solid rgba(113, 141, 165, .35);
  padding: 6px 10px;
}

/* ==========================================================================
   SEC.07 — FAMILY
   ========================================================================== */
.family { padding: 88px 0 72px; }
.family__grid { display: grid; gap: 40px; align-items: center; }
.family__media {
  position: relative;
  border: 1px solid var(--hairline-strong);
  background: var(--color-white);
  padding: 16px 16px 40px;
}
.family__media img { width: 100%; border: 1px solid var(--hairline); }
.family__media .dim--w { bottom: 13px; }
.family__ctas { display: flex; flex-wrap: wrap; gap: 12px; }

/* ==========================================================================
   SEC.08 — NEWSLETTER
   ========================================================================== */
.news { padding: 24px 0 96px; }
.news__frame {
  padding: clamp(34px, 7vw, 80px) clamp(22px, 6vw, 80px);
  text-align: center;
}
.badge--ghost { margin-bottom: 22px; }
.news__title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.15rem, 4vw, 2.4rem);
  text-transform: uppercase;
  line-height: 1.08;
  margin-bottom: 16px;
}
.news__copy { max-width: 480px; margin: 0 auto 28px; color: var(--ink-soft); }
.news__form {
  display: flex; flex-direction: column; gap: 10px;
  max-width: 480px; margin: 0 auto 14px;
}
.news__form input {
  flex: 1;
  border: 1px solid var(--hairline-strong);
  background: var(--color-cultured-pearl);
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: .8rem; font-weight: 700; letter-spacing: .12em;
  color: var(--ink);
  min-width: 0;
}
.news__form input::placeholder { color: var(--color-shadow-blue); }
.news__form input:focus { outline: 2px solid var(--color-primary); outline-offset: 0; border-color: transparent; }
.news__status {
  min-height: 20px;
  font-size: .64rem; font-weight: 700; letter-spacing: .26em;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}
.news__disclaimer { font-size: .72rem; color: var(--ink-soft); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background: var(--color-navy-dark);
  color: var(--color-cultured-pearl);
  padding: 64px 0 40px;
}
.footer__top {
  display: grid; gap: 44px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(113, 141, 165, .25);
}
.footer__brand img { width: 170px; margin-bottom: 20px; }
.footer__brand p { max-width: 360px; color: rgba(242, 245, 247, .66); font-size: .92rem; }
.footer__nav { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.footer__nav-label {
  font-size: .62rem; font-weight: 700; letter-spacing: .26em;
  color: var(--color-primary-light);
  margin-bottom: 14px;
}
.footer__nav a {
  display: block;
  padding: 6px 0;
  font-size: .9rem;
  color: rgba(242, 245, 247, .78);
  transition: color var(--t-fast);
}
.footer__nav a:hover { color: var(--color-primary-light); }
.footer__bottom {
  display: flex; flex-wrap: wrap; gap: 10px;
  align-items: center; justify-content: space-between;
  padding-top: 26px;
  font-size: .72rem;
  color: rgba(242, 245, 247, .5);
}
.footer__coord { letter-spacing: .26em; font-weight: 700; font-size: .6rem; }

/* ==========================================================================
   CART DRAWER
   ========================================================================== */
.cart-overlay {
  position: fixed; inset: 0; z-index: 80;
  background: rgba(14, 26, 45, .5);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity var(--t-med);
}
.cart-overlay.is-open { opacity: 1; }

.cart-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 90;
  width: min(440px, 100%);
  background: var(--color-cultured-pearl);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
  border-left: 1px solid var(--hairline-strong);
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--t-smooth);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.cart-drawer.is-open { transform: none; }

.cart-drawer__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--container-pad);
  border-bottom: 1px solid var(--hairline);
  background: var(--color-white);
}
.cart-drawer__label {
  font-size: .58rem; font-weight: 700; letter-spacing: .3em;
  color: var(--color-primary-dark);
  margin-bottom: 4px;
}
.cart-drawer__head h2 {
  font-family: var(--font-subheading);
  font-weight: 800; font-size: 1.15rem;
  text-transform: uppercase;
}
.cart-drawer__close {
  width: 40px; height: 40px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  transition: border-color var(--t-fast), color var(--t-fast);
}
.cart-drawer__close:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }

.cart-drawer__body { flex: 1; overflow-y: auto; padding: 22px var(--container-pad); }

.cart-empty {
  display: none;
  flex-direction: column; align-items: center; gap: 18px;
  text-align: center;
  padding: 56px 0;
}
.cart-drawer.is-empty .cart-empty { display: flex; }
.cart-drawer.is-empty .cart-drawer__foot { display: none; }
.cart-empty p {
  font-family: var(--font-subheading);
  font-weight: 700; font-size: 1rem;
  text-transform: uppercase; letter-spacing: .04em;
}

.cart-items { display: grid; gap: 14px; }
.cart-item {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 14px; align-items: center;
  background: var(--color-white);
  border: 1px solid var(--hairline);
  padding: 12px;
  animation: itemIn .4s cubic-bezier(.16,1,.3,1);
}
@keyframes itemIn { from { opacity: 0; transform: translateY(10px); } }
.cart-item__img {
  width: 72px; height: 72px; object-fit: cover;
  border: 1px solid var(--hairline);
}
.cart-item__name {
  font-family: var(--font-family);
  font-weight: 700; font-size: .9rem;
  text-transform: uppercase; letter-spacing: .06em;
}
.cart-item__price {
  font-size: .8rem; color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  margin-top: 2px;
}
.cart-item__qty {
  display: inline-flex; align-items: center; gap: 2px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  margin-top: 8px;
  width: max-content;
  background: var(--color-cultured-pearl);
}
.cart-item__qty button {
  width: 28px; height: 28px;
  font-weight: 700;
  transition: color var(--t-fast);
}
.cart-item__qty button:hover { color: var(--color-primary-dark); }
.cart-item__qty span {
  min-width: 26px; text-align: center;
  font-size: .8rem; font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.cart-item__remove {
  align-self: start;
  font-size: .58rem; font-weight: 700; letter-spacing: .2em;
  color: var(--ink-soft);
  text-transform: uppercase;
  transition: color var(--t-fast);
}
.cart-item__remove:hover { color: var(--color-red); }

.cart-drawer__foot {
  border-top: 1px solid var(--hairline);
  background: var(--color-white);
  padding: 20px var(--container-pad) 24px;
}
.cart-drawer__subtotal {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--font-subheading);
  font-weight: 700; font-size: 1rem;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.cart-drawer__subtotal span:last-child {
  font-family: var(--font-family);
  font-size: 1.2rem;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary-dark);
}
.cart-drawer__note { font-size: .72rem; color: var(--ink-soft); margin-bottom: 16px; }
.cart-drawer__actions { display: grid; gap: 10px; }

/* ==========================================================================
   MOBILE TAB BAR
   ========================================================================== */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 70;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--hairline-strong);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  height: var(--tabbar-h);
}
.tabbar__tick {
  position: absolute; top: -1px; left: 0;
  width: 25%; height: 3px;
  background: var(--color-primary);
  transition: transform var(--t-smooth);
}
.tabbar__tick::before, .tabbar__tick::after {
  content: ""; position: absolute; top: 0; width: 1px; height: 9px;
  background: var(--color-primary);
}
.tabbar__tick::before { left: 0; }
.tabbar__tick::after { right: 0; }
.tabbar__item {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 4px;
  position: relative;
  color: var(--ink-soft);
  transition: color var(--t-fast);
}
.tabbar__item svg { width: 21px; height: 21px; }
.tabbar__item span:not(.cart-count) {
  font-size: .56rem; font-weight: 700; letter-spacing: .18em;
  text-transform: uppercase;
}
.tabbar__item.is-active { color: var(--color-navy); }
.tabbar__item.is-active svg { stroke: var(--color-primary-dark); }
.cart-count--tab { top: 6px; right: calc(50% - 22px); }

/* ==========================================================================
   RESPONSIVE — 768px+
   ========================================================================== */
@media (min-width: 768px) {
  :root { --header-h: 72px; }

  .hero { padding: 64px 0 88px; }

  .why__carousel, .shop__carousel {
    grid-auto-flow: row;
    grid-template-columns: repeat(2, 1fr);
    overflow: visible;
    margin-inline: 0;
    padding-inline: 0;
  }
  .why__carousel { grid-template-columns: repeat(3, 1fr); }
  .why .frame-counter, .shop .frame-counter { display: none; }

  .analysis__stage { grid-template-columns: 1fr 1fr; align-items: center; gap: 48px; }
  .analysis__callouts { gap: 18px; }
  .callout__line { display: block; }

  .panel__grid { grid-template-columns: 1.25fr .8fr; align-items: start; }

  .family__grid { grid-template-columns: 1fr 1fr; gap: 64px; }

  .news__form { flex-direction: row; }

  .footer__top { grid-template-columns: 1.2fr 1fr; }
}

/* ==========================================================================
   RESPONSIVE — 1024px+ (desktop: no tab bar, full nav)
   ========================================================================== */
@media (min-width: 1024px) {
  :root { --tabbar-h: 0px; }
  body { padding-bottom: 0; }
  .tabbar { display: none; }
  .header__menu { display: none; }
  .mobile-nav { display: none; }
  .header__nav {
    display: flex; gap: 4px;
  }
  .header__nav a {
    font-size: .72rem; font-weight: 700;
    letter-spacing: .18em; text-transform: uppercase;
    padding: 8px 13px;
    color: var(--ink-soft);
    border-radius: var(--radius-sm);
    transition: color var(--t-fast);
    position: relative;
  }
  .header__nav a::after {
    content: ""; position: absolute; left: 13px; right: 13px; bottom: 2px;
    height: 2px; background: var(--color-primary);
    transform: scaleX(0); transform-origin: left center;
    transition: transform var(--t-med);
  }
  .header__nav a:hover { color: var(--ink); }
  .header__nav a:hover::after { transform: scaleX(1); }
  .header__account { display: inline-block; }

  .sec-rail { padding-bottom: 24px; }
  .hero { padding: 88px 0 110px; }
  .hero__inner { grid-template-columns: 1.05fr 1fr; align-items: center; gap: 56px; }
  .hero__copy { padding-top: 0; }
  .hero__title { font-size: clamp(2rem, 3vw, 3.1rem); }
  .saltio, .why, .shop, .family { padding-block: 110px; }
  .analysis { padding-top: 110px; }
  .panel { padding: 96px 0 120px; margin-top: 110px; }
  .news { padding-bottom: 130px; }

  .analysis__stage { gap: 80px; padding-bottom: 90px; }
  .saltio__copy { margin-top: 42px; }
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .announce__track { animation: none; transform: none; }
  .scan-reveal img { clip-path: none; }
  .scan-reveal::after { display: none; }
  .hero__title-line > span { transform: none; }
  [data-reveal] { opacity: 1; transform: none; }
  .gauge__fill { transform: none; }
  .analysis__scanline { display: none; }
  .hero__crosshair { display: none; }
  .dot--pulse { animation: none; }
  .caret { animation: none; }
}