/* =========================================================
   ActiveWater Labs · MineralDose™ — Pre-launch site
   Design system: cool near-black, glacial-cyan accent,
   oversized grotesque display, editorial labels.
   ========================================================= */

:root {
  /* Surfaces */
  --bg:          #0A0E12;
  --bg-deep:     #06090C;
  --surface:     #141A21;
  --surface-hi:  #1C242D;
  --hairline:    rgba(244,246,248,0.10);

  /* Text */
  --text:        #F4F6F8;
  --text-muted:  #8B97A3;
  --text-faint: #818D99;

  /* Accent — glacial cyan-teal */
  --accent:      #4FC3D6;
  --accent-hi:   #7FE0EF;
  --accent-deep: #1E6B7A;

  /* Inverted (light) section */
  --inv-bg:      #F4F6F8;
  --inv-text:    #0A0E12;
  --inv-muted:   #5A6672;
  --inv-hairline: rgba(10,14,18,0.12);

  /* Fonts */
  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body:    "Inter", system-ui, sans-serif;
  --font-serif:   "Fraunces", Georgia, serif;

  /* Spacing */
  --section-pad: clamp(7rem, 13vh, 13rem);
  --gutter: 24px;
  --margin: clamp(1.5rem, 5vw, 6rem);
  --maxw: 1600px;
  --maxw-text: 62ch;
  --radius-sm: 4px;
  --radius: 10px;
  --radius-lg: 18px;

  /* Motion */
  --dur-micro: 350ms;
  --dur-reveal: 900ms;
  --dur-trans: 750ms;
  --ease-reveal: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-move:   cubic-bezier(0.22, 1, 0.36, 1);
  --ease-micro:  cubic-bezier(0.33, 1, 0.68, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html.js { scroll-behavior: auto; } /* Lenis takes over */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
input { font: inherit; }
::selection { background: var(--accent); color: var(--bg-deep); }

/* ---------- Layout primitives ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--margin); }
.section { position: relative; padding-block: var(--section-pad); }
.col-full { grid-column: 1 / -1; }

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  row-gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.col-label { grid-column: 1 / 4; }
.col-head  { grid-column: 1 / 8; }
.col-body  { grid-column: 8 / 13; }
@media (max-width: 900px) {
  .col-label, .col-head, .col-body { grid-column: 1 / -1; }
}

/* ---------- Typography ---------- */
.display {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: -0.025em;
  line-height: 1.02;
  text-wrap: balance;
}
.display--xl {
  font-size: clamp(3.25rem, 8vw, 7.5rem);
  letter-spacing: -0.03em;
  line-height: 0.95;
}
.serif-accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.lead {
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 28ch;
}
.prose { max-width: var(--maxw-text); color: var(--text-muted); }
.prose p + p { margin-top: 1.25em; }
.prose strong { color: var(--text); font-weight: 500; }
.section-no {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}
.caption {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}
.vh {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Decorative layers ---------- */
.grain {
  position: fixed; inset: 0; z-index: 9000;
  pointer-events: none; opacity: 0.04; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.cursor {
  position: fixed; top: 0; left: 0; z-index: 9999;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent); pointer-events: none;
  transform: translate(-50%, -50%);
  transition: width var(--dur-micro) var(--ease-micro),
              height var(--dur-micro) var(--ease-micro),
              background var(--dur-micro), opacity var(--dur-micro);
  opacity: 0;
  mix-blend-mode: difference;
}
.cursor.is-active { opacity: 1; }
.cursor.is-hover { width: 44px; height: 44px; background: var(--accent); }
@media (hover: none), (pointer: coarse) { .cursor { display: none; } }

.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 200;
  pointer-events: none; background: transparent;
}
.scroll-progress span {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent));
  transform-origin: left;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background var(--dur-trans) var(--ease-micro),
              border-color var(--dur-trans), backdrop-filter var(--dur-trans);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--hairline);
}
.nav__inner {
  max-width: var(--maxw); margin-inline: auto; padding: 1.1rem var(--margin);
  display: flex; align-items: center; justify-content: space-between;
}
.wordmark {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-display); font-weight: 500;
  letter-spacing: -0.01em; color: var(--text);
}
.wordmark__mark { color: var(--accent); flex: none; }
.wordmark__text { font-size: 1.05rem; }
.wordmark__by { color: var(--text-muted); font-weight: 400; }
@media (max-width: 560px) { .wordmark__by { display: none; } }
.nav__links { display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2.4rem); }
.nav__links a {
  font-family: var(--font-display); font-size: 0.9rem; color: var(--text-muted);
  position: relative; transition: color var(--dur-micro);
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -4px; height: 1px; width: 100%;
  background: var(--accent); transform: scaleX(0); transform-origin: right;
  transition: transform var(--dur-micro) var(--ease-micro);
}
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__cta { color: var(--text) !important; }
.nav__cta::after { transform: scaleX(1); background: var(--accent); }
.nav__signin { color: var(--accent) !important; }
.nav__actions {
  display: flex; align-items: center;
  gap: clamp(1rem, 2.4vw, 2.4rem);
  margin-left: clamp(1rem, 2.4vw, 2.4rem);
}
.nav__actions .nav__cta {
  font-family: var(--font-display); font-size: 0.9rem;
  position: relative; transition: color var(--dur-micro);
}
.nav__actions .nav__cta::after {
  content: ""; position: absolute; left: 0; bottom: -4px; height: 1px; width: 100%;
  background: var(--accent);
}
.nav__links { margin-left: auto; }

/* Hamburger (mobile only) */
.nav__burger {
  display: none;
  width: 40px; height: 40px; margin-right: -8px;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  background: none; border: 0; cursor: pointer; padding: 0;
}
.nav__burger span {
  display: block; width: 20px; height: 1.6px; border-radius: 1px;
  background: var(--text);
  transition: transform var(--dur-micro) var(--ease-micro), opacity var(--dur-micro);
}
.menu-open .nav__burger span:nth-child(1) { transform: translateY(6.6px) rotate(45deg); }
.menu-open .nav__burger span:nth-child(2) { opacity: 0; }
.menu-open .nav__burger span:nth-child(3) { transform: translateY(-6.6px) rotate(-45deg); }

@media (max-width: 760px) {
  .nav__burger { display: flex; }
  .nav__actions { gap: 0.9rem; margin-left: 0.9rem; }
  /* The section links become a slide-down panel under the bar. */
  .nav__links {
    position: absolute; top: 100%; left: 0; right: 0; margin-left: 0;
    display: flex; flex-direction: column; align-items: stretch; gap: 0;
    padding: 0.4rem var(--margin) 1rem;
    /* Solid on purpose: translucent panels read as mud on browsers
       without backdrop-filter, and the hero bleeds through the links. */
    background: var(--bg);
    border-bottom: 1px solid var(--hairline);
    visibility: hidden; opacity: 0; transform: translateY(-10px);
    pointer-events: none;
    transition: opacity var(--dur-micro) var(--ease-micro),
                transform var(--dur-micro) var(--ease-micro),
                visibility 0s linear var(--dur-micro);
  }
  .menu-open .nav__links {
    visibility: visible; opacity: 1; transform: translateY(0);
    pointer-events: auto;
    transition: opacity var(--dur-micro) var(--ease-micro),
                transform var(--dur-micro) var(--ease-micro);
  }
  .nav__links a {
    font-size: 1rem; padding: 0.85rem 0;
    border-bottom: 1px solid color-mix(in srgb, var(--hairline) 55%, transparent);
  }
  .nav__links a:last-child { border-bottom: 0; }
  .nav__links a::after { display: none; }
  /* Menu open needs the solid bar even at the top of the page. */
  .nav.menu-open {
    background: color-mix(in srgb, var(--bg) 97%, transparent);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom-color: var(--hairline);
  }
}

/* ---------- Buttons / forms ---------- */
.signup-form {
  display: flex; gap: 0.5rem; flex-wrap: wrap;
  max-width: 520px;
}
.signup-form input[type="email"] {
  flex: 1 1 220px; min-width: 0;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--hairline); border-radius: var(--radius);
  padding: 1rem 1.1rem; outline: none;
  transition: border-color var(--dur-micro), background var(--dur-micro);
}
.signup-form input::placeholder { color: var(--text-faint); }
.signup-form input:focus-visible { border-color: var(--accent); background: var(--surface-hi); }
.signup-form button {
  flex: none;
  background: var(--text); color: var(--bg-deep);
  font-family: var(--font-display); font-weight: 500;
  padding: 1rem 1.5rem; border-radius: var(--radius);
  letter-spacing: -0.01em;
  transition: transform var(--dur-micro) var(--ease-micro),
              background var(--dur-micro), box-shadow var(--dur-micro);
}
.signup-form button:hover {
  background: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 14px 40px -12px var(--accent);
}
.signup-form button:active { transform: translateY(1px); }
.btn-sub { opacity: 0.7; font-weight: 400; }
.form-status { flex-basis: 100%; min-height: 1.2em; font-size: 0.85rem; color: var(--accent); margin-top: 0.4rem; }
.form-status.is-error { color: #ff7a7a; }
.form-promise { font-size: 0.9rem; color: var(--text); margin-bottom: 0.85rem; }
.form-micro, .form-counter, .form-upsell { font-size: 0.8125rem; color: var(--text-faint); margin-top: 0.9rem; }
.form-counter strong, .form-upsell strong { color: var(--text-muted); }
.form-upsell a { color: var(--accent); }
.form-upsell a:hover { color: var(--accent-hi); }

.btn-line {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-display); font-weight: 500; font-size: 1.05rem;
  color: var(--text); padding-bottom: 0.35rem; margin-top: 2.5rem;
  border-bottom: 1px solid var(--hairline);
  transition: color var(--dur-micro), border-color var(--dur-micro), gap var(--dur-micro);
}
.btn-line span { color: var(--accent); transition: transform var(--dur-micro) var(--ease-micro); }
.btn-line:hover { color: var(--accent-hi); border-color: var(--accent); gap: 1rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  background: var(--bg-deep);
  padding-block: 7rem 3.5rem; overflow: hidden;
}
/* Photoreal backdrop — the pour money-shot, slow push-in */
.hero__bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.hero__bg img {
  width: 100%; height: 100%; object-fit: cover; object-position: 72% center;
  transform: scale(1.06);
  animation: hero-kenburns 36s ease-in-out infinite alternate;
  will-change: transform;
}
@keyframes hero-kenburns {
  from { transform: scale(1.06) translateX(0); }
  to   { transform: scale(1.13) translateX(-1.5%); }
}
@media (prefers-reduced-motion: reduce) { .hero__bg img { animation: none; } }
/* Mineral-sparkle canvas rides on top of the photo; screen blend lets only
   the bright particles/caustics through, never the canvas's dark ground. */
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; mix-blend-mode: screen; opacity: 0.8; }
.hero__veil {
  position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(6,9,12,0.94) 0%, rgba(6,9,12,0.82) 32%, rgba(6,9,12,0.35) 62%, rgba(6,9,12,0.15) 78%, rgba(6,9,12,0.55) 100%),
    linear-gradient(180deg, rgba(6,9,12,0.55) 0%, rgba(6,9,12,0.05) 30%, rgba(6,9,12,0.1) 70%, rgba(6,9,12,0.9) 100%);
}
.hero__inner { position: relative; z-index: 3; }
.badge {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-display); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--text);
  border: 1px solid rgba(79,195,214,0.38); border-radius: 100px;
  background: rgba(79,195,214,0.08);
  padding: 0.5rem 1rem; margin-bottom: 2rem;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.badge svg { color: var(--accent-hi); }
.hero__title {
  font-family: var(--font-display); font-weight: 500;
  font-size: clamp(2.6rem, 6.4vw, 6.4rem);
  letter-spacing: -0.03em; line-height: 0.98;
  max-width: 17ch; margin-bottom: 1.6rem; text-wrap: balance;
  text-shadow: 0 2px 40px rgba(6,9,12,0.55);
}
.hero__sub { max-width: 54ch; color: var(--text-muted); font-size: clamp(1.05rem, 1.6vw, 1.3rem); margin-bottom: 2rem; text-shadow: 0 1px 24px rgba(6,9,12,0.6); }
.hero__form { max-width: 560px; }
@media (max-width: 760px) {
  .hero__bg img { object-position: 62% center; }
  .hero__veil {
    background:
      linear-gradient(180deg, rgba(6,9,12,0.82) 0%, rgba(6,9,12,0.55) 40%, rgba(6,9,12,0.72) 75%, rgba(6,9,12,0.95) 100%);
  }
}

/* ---------- Film grain (site-wide) — kills gradient banding, adds texture */
body::after {
  content: ""; position: fixed; inset: -50%; z-index: 2000; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: 0.05; mix-blend-mode: overlay;
  animation: grain-shift 1.2s steps(3) infinite;
}
@keyframes grain-shift {
  0% { transform: translate(0,0); }
  33% { transform: translate(2.5%, -1.5%); }
  66% { transform: translate(-1.5%, 2.5%); }
  100% { transform: translate(0,0); }
}
@media (prefers-reduced-motion: reduce) { body::after { animation: none; } }

/* ---------- Strip ---------- */
.strip {
  border-block: 1px solid var(--hairline);
  background: var(--bg-deep);
}
.strip__inner {
  display: flex; flex-wrap: wrap; gap: 1.5rem 2.5rem; align-items: center;
  padding-block: 1.3rem;
  font-family: var(--font-display); font-size: 0.85rem; letter-spacing: 0.02em;
  color: var(--text-muted);
}
.strip__item { display: inline-flex; align-items: center; gap: 0.55rem; }
.strip__counter { margin-left: auto; }
.strip__counter strong { color: var(--accent); font-weight: 500; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex: none; }

/* ---------- Problem ---------- */
.problem .pull {
  font-size: clamp(1.4rem, 2.2vw, 2rem); line-height: 1.25;
  color: var(--text); margin-block: 1.6em; max-width: 24ch;
}

/* ---------- Solution ---------- */
.solution { background: var(--bg-deep); overflow: hidden; text-align: center; }
.solution__bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(60% 60% at 50% 45%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 70%);
  opacity: 0.7;
}
.solution__inner { position: relative; z-index: 1; max-width: 22ch; margin-inline: auto; max-width: 1100px; }
.solution .section-no { text-align: center; }
.solution .display--xl { margin-inline: auto; margin-bottom: 2rem; }
.solution .lead { max-width: 46ch; margin: 2rem auto 1.5rem; text-align: center; }
.solution .prose { margin-inline: auto; text-align: center; }
.tagline {
  display: inline-flex; flex-wrap: wrap; justify-content: center; gap: 0.9rem;
  margin-top: 2.6rem; font-family: var(--font-display);
  font-size: 0.8rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent);
}
.tagline .sep { color: var(--text-faint); }

/* ---------- How it works ---------- */
.how .display { max-width: 18ch; margin-bottom: 3.5rem; }
.flow { margin-block: 1rem 3.5rem; }
.flow__svg { width: 100%; height: auto; }
.flow__pipe { stroke: var(--hairline); stroke-width: 2; }
.flow__stream {
  stroke: var(--accent); stroke-width: 2.5; stroke-dasharray: 14 12;
  opacity: 0.85;
}
.flow__node circle { fill: var(--bg); stroke: var(--surface-hi); stroke-width: 2; transition: stroke 0.4s, fill 0.4s; }
.flow__node text { fill: var(--text-faint); font-family: var(--font-display); font-size: 22px; text-anchor: middle; transition: fill 0.4s; }
.flow__node.is-on circle { stroke: var(--accent); fill: color-mix(in srgb, var(--accent) 14%, var(--bg)); }
.flow__node.is-on text { fill: var(--text); }
.flow__drop { fill: var(--accent); opacity: 0; }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gutter); }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step { padding-top: 1.4rem; border-top: 1px solid var(--hairline); }
.step__no { font-family: var(--font-display); font-size: 0.78rem; letter-spacing: 0.14em; color: var(--accent); }
.step h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.35rem; letter-spacing: -0.01em; margin: 0.7rem 0 0.7rem; }
.step p { font-size: 0.95rem; color: var(--text-muted); }
.step p strong { color: var(--text); font-weight: 500; }

/* ---------- Manifold ---------- */
.engine .manifold { margin-top: 2rem; }
.manifold__svg { width: 100%; height: auto; }
.m-bore { fill: var(--surface); stroke: var(--surface-hi); stroke-width: 2; }
.m-center { stroke: var(--accent); stroke-width: 2; stroke-dasharray: 10 9; opacity: 0.6; }
.m-bypass { fill: none; stroke: var(--text-muted); stroke-width: 2; }
.m-sensor { fill: var(--bg); stroke: var(--accent); stroke-width: 2; }
.m-inject { stroke: var(--accent); stroke-width: 2; }
.m-inject-dot { fill: var(--accent); }
.m-helix path { fill: none; stroke: var(--accent); stroke-width: 2.5; opacity: 0.85; }
.m-filter rect { fill: none; stroke: var(--text-muted); stroke-width: 2; }
.m-filter line { stroke: var(--text-muted); stroke-width: 1.5; }
.m-label { fill: var(--text-faint); font-family: var(--font-display); font-size: 16px; letter-spacing: 0.08em; text-anchor: middle; text-transform: uppercase; }
.m-label--accent { fill: var(--accent); }
.spec-row {
  display: flex; flex-wrap: wrap; gap: 0.8rem 1.2rem; margin-top: 2rem;
  font-family: var(--font-display); font-size: 0.85rem; letter-spacing: 0.04em;
}
.spec-row li {
  color: var(--text-muted); border: 1px solid var(--hairline);
  border-radius: 100px; padding: 0.5rem 1.1rem;
}

/* ---------- Formulation (inverted light) ---------- */
.invert { background: var(--inv-bg); color: var(--inv-text); }
.invert .section-no { color: var(--inv-muted); }
.invert .display { color: var(--inv-text); }
.invert .prose { color: var(--inv-muted); }
.invert .prose strong { color: var(--inv-text); }
.invert .note { color: var(--inv-muted); font-size: 0.95rem; border-left: 2px solid var(--accent-deep); padding-left: 1rem; margin-top: 1.5rem; }
.invert .caption { color: #7a8590; margin-top: 1.3rem; }
/* ---------- Controller ---------- */
.controller .feature-list { margin-top: 2rem; }
.feature-list li {
  position: relative; padding: 1.1rem 0 1.1rem 1.6rem;
  border-top: 1px solid var(--hairline); color: var(--text-muted);
  font-size: 1rem;
}
.feature-list li:last-child { border-bottom: 1px solid var(--hairline); }
.feature-list li::before {
  content: ""; position: absolute; left: 0; top: 1.45rem;
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
}
.device { display: flex; justify-content: center; padding-top: 2rem; }
.device__glass {
  position: relative; width: min(440px, 90%);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(244,246,248,0.08), rgba(244,246,248,0.02));
  border: 1px solid var(--hairline);
  box-shadow: inset 0 1px 0 rgba(244,246,248,0.08), 0 40px 80px -40px #000;
  padding: 2.4rem; backdrop-filter: blur(6px);
  display: flex; flex-direction: column; align-items: center; gap: 1.6rem;
}
.device__glass::after {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none;
  box-shadow: 0 0 60px -20px color-mix(in srgb, var(--accent) 50%, transparent);
}
/* Optional companion app note */
.app-note {
  margin-top: 1.8rem;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--hairline));
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--accent) 5%, var(--surface));
  padding: 1.2rem 1.4rem;
}
.app-note__eyebrow {
  font-family: var(--font-display); font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 0.55rem;
}
.app-note__text { font-size: 0.95rem; line-height: 1.6; color: var(--text-muted); }

/* Knob dressed as the real hardware — knurled grip ring + glow */
.knobwrap { position: relative; display: grid; place-items: center; }
.knobwrap::before {
  content: ""; position: absolute; width: 128%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 195, 214, 0.16), transparent 68%);
  filter: blur(14px); z-index: 0;
}
.knob-knurl {
  position: absolute; width: 116%; aspect-ratio: 1; border-radius: 50%; z-index: 1;
  background: repeating-conic-gradient(rgba(244, 246, 248, 0.17) 0deg 2.4deg, rgba(6, 9, 12, 0) 2.4deg 6deg);
  -webkit-mask: radial-gradient(circle, transparent 60%, #000 61%, #000 79%, transparent 80%);
  mask: radial-gradient(circle, transparent 60%, #000 61%, #000 79%, transparent 80%);
  animation: knurl-spin 90s linear infinite;
}
@keyframes knurl-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .knob-knurl { animation: none; } }
.knob { width: clamp(160px, 22vw, 210px); height: auto; position: relative; z-index: 2; }
.knob__ring { fill: none; stroke: var(--surface-hi); stroke-width: 3; }
.knob__arc {
  fill: none; stroke: var(--accent); stroke-width: 3; stroke-linecap: round;
  stroke-dasharray: 528; stroke-dashoffset: 160;
  transform: rotate(-90deg); transform-origin: 100px 100px;
  filter: drop-shadow(0 0 6px color-mix(in srgb, var(--accent) 60%, transparent));
}
.knob__face { fill: var(--surface); stroke: var(--hairline); stroke-width: 1; }
.knob__ind { stroke: var(--accent); stroke-width: 3; stroke-linecap: round; }
.knob__read { fill: var(--text); font-family: var(--font-display); font-weight: 500; font-size: 34px; text-anchor: middle; }
.knob__lbl { fill: var(--text-muted); font-family: var(--font-display); font-size: 13px; letter-spacing: 0.1em; text-anchor: middle; }
.device__readout { width: 100%; display: grid; gap: 0.6rem; }
.device__row {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-display); font-size: 0.82rem; letter-spacing: 0.08em;
  color: var(--text-faint); padding-bottom: 0.6rem; border-bottom: 1px solid var(--hairline);
}
.device__accent { color: var(--accent); }

/* ---------- Cartridges (horizontal) ---------- */
.cartridges { background: var(--bg-deep); }
.cartridges__pin { padding-block: var(--section-pad); }
.cartridges__head { max-width: var(--maxw); }
.cartridges__head .display { max-width: 16ch; margin: 0.5rem 0 1.5rem; }
.cartridges__head .prose { max-width: 56ch; }
.cartridges__hint {
  margin-top: 2.5rem; font-family: var(--font-display); font-size: 0.78rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-faint);
}
.cartridges__track {
  display: flex; gap: var(--gutter); margin-top: 1.2rem;
  padding: 0.5rem var(--margin) 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--surface-hi) transparent;
  /* fade edges to hint at more content */
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
}
.cartridges__track::-webkit-scrollbar { height: 6px; }
.cartridges__track::-webkit-scrollbar-track { background: transparent; }
.cartridges__track::-webkit-scrollbar-thumb { background: var(--surface-hi); border-radius: 3px; }
.cart {
  flex: 0 0 clamp(230px, 26vw, 300px);
  background: var(--surface); border: 1px solid var(--hairline);
  border-radius: var(--radius-lg); padding: 2rem 1.8rem;
  display: flex; flex-direction: column; align-items: center; text-align: center;
  scroll-snap-align: start;
  transition: border-color var(--dur-micro), transform var(--dur-micro) var(--ease-micro), background var(--dur-micro);
}
.cart:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--hairline)); transform: translateY(-6px); }
.cart--bottle { flex-basis: clamp(260px, 30vw, 340px); }
.cart__svg { width: 120px; height: 165px; margin-bottom: 1.4rem; }
.cart__body, .cart__bottle { fill: color-mix(in srgb, var(--accent) 8%, var(--surface-hi)); stroke: var(--surface-hi); stroke-width: 2; }
.cart__barb { fill: var(--surface-hi); }
.cart__barb2 { fill: var(--accent); opacity: 0.7; }
.cart__oring { stroke: var(--accent); stroke-width: 3; opacity: 0.5; }
.cart__ball { fill: var(--accent); opacity: 0.85; }
.cart__cap { fill: var(--surface-hi); }
.cart__bottle { fill: color-mix(in srgb, #b8860b 14%, var(--surface)); }
.cart__spike { stroke: var(--accent); stroke-width: 3; stroke-linecap: round; }
.cart h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.4rem; letter-spacing: 0.02em; }
.cart p { font-size: 0.9rem; color: var(--text-muted); margin-top: 0.5rem; }
.cart--bottle h3 { font-size: 1.15rem; }

/* ---------- Campaign ---------- */
.campaign { background: var(--bg-deep); overflow: hidden; }
.campaign__bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(80% 60% at 70% 30%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 70%);
}
.campaign__inner { position: relative; z-index: 1; }
.campaign .display--xl { max-width: 16ch; margin-block: 1rem 2.2rem; }
.campaign .lead { max-width: 50ch; margin-bottom: 1.8rem; }
.status-line { color: var(--text-muted); max-width: 60ch; font-size: 0.95rem; border-left: 2px solid var(--accent); padding-left: 1.1rem; }
.status-line strong { color: var(--text); font-weight: 500; }

/* ---------- Tiers ---------- */
.tiers .display { max-width: 18ch; margin: 0.5rem 0 1rem; }
.tiers__sub { margin-bottom: 3rem; }
.tier-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gutter);
  max-width: 1100px;
}
@media (max-width: 900px) { .tier-grid { grid-template-columns: 1fr; max-width: 480px; } }
.tier {
  background: var(--surface); border: 1px solid var(--hairline);
  border-radius: var(--radius-lg); padding: 1.8rem 1.5rem;
  display: flex; flex-direction: column; gap: 0.7rem;
  transition: transform var(--dur-micro) var(--ease-micro), border-color var(--dur-micro),
    background var(--dur-micro), box-shadow var(--dur-micro);
}
.tier:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--hairline));
  box-shadow: 0 18px 44px rgba(6, 9, 12, 0.5), 0 0 0 1px rgba(79, 195, 214, 0.12);
}
.tier--featured {
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 12%, var(--surface)), var(--surface));
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  box-shadow: 0 24px 60px rgba(6, 9, 12, 0.55), 0 0 44px rgba(79, 195, 214, 0.12);
  transform: scale(1.035);
  position: relative; z-index: 1;
}
.tier--featured:hover { transform: scale(1.035) translateY(-6px); }
@media (max-width: 1100px) {
  .tier--featured, .tier--featured:hover { transform: none; }
  .tier--featured:hover { transform: translateY(-6px); }
}
.tier__tag {
  align-self: flex-start;
  font-family: var(--font-display); font-size: 0.68rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-muted);
  border: 1px solid var(--hairline); border-radius: 100px; padding: 0.3rem 0.7rem;
}
.tier__tag--pop { color: var(--bg-deep); background: var(--accent); border-color: var(--accent); }
.tier__tag--scarce { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.tier__name { font-family: var(--font-display); font-weight: 500; font-size: 1.3rem; letter-spacing: -0.01em; margin-top: 0.3rem; }
.tier__model {
  display: inline-block; vertical-align: 0.12em; margin-left: 0.4rem;
  font-size: 0.62em; font-weight: 500; letter-spacing: 0.08em;
  color: var(--accent-hi); background: rgba(79, 195, 214, 0.12);
  border: 1px solid rgba(79, 195, 214, 0.3); border-radius: 7px;
  padding: 0.12em 0.5em;
}
.tier__price { font-family: var(--font-display); font-size: 1.6rem; color: var(--text); }
.tier__price span { font-family: var(--font-body); font-size: 0.72rem; color: var(--text-faint); letter-spacing: 0.04em; text-transform: uppercase; display: block; margin-top: 0.1rem; }
.tier__pos { font-size: 0.88rem; color: var(--text-muted); }
.tier__list { margin-top: auto; padding-top: 1rem; display: grid; gap: 0.5rem; border-top: 1px solid var(--hairline); }
.tier__list li { font-size: 0.85rem; color: var(--text-muted); padding-left: 1.1rem; position: relative; }
.tier__list li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.tier__save {
  display: block; font-style: normal; font-family: var(--font-body);
  font-size: 0.72rem; letter-spacing: 0.04em; color: var(--accent-hi);
  margin-top: 0.2rem;
}
.tier__cta {
  margin-top: 1.1rem;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.35rem;
  font-family: var(--font-display); font-size: 0.8rem; font-weight: 500;
  white-space: nowrap;
  color: var(--text); text-decoration: none;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--hairline));
  border-radius: 100px; padding: 0.6rem 0.5rem;
  transition: border-color var(--dur-micro), background var(--dur-micro), color var(--dur-micro);
}
.tier__cta:hover { border-color: var(--accent); background: rgba(79, 195, 214, 0.1); }
.tier__cta--solid { background: var(--accent); border-color: var(--accent); color: var(--bg-deep); }
.tier__cta--solid:hover { background: var(--accent-hi); border-color: var(--accent-hi); color: var(--bg-deep); }
.tiers__addon { margin-top: 2rem; color: var(--text-faint); font-size: 0.9rem; }

/* ---------- Founder ---------- */
.founder__quote {
  font-size: clamp(1.3rem, 2.2vw, 1.9rem); line-height: 1.35; color: var(--text);
  max-width: 30ch;
}
.founder__quote cite {
  display: block; margin-top: 1.4rem; font-style: normal; font-family: var(--font-display);
  font-size: 0.85rem; letter-spacing: 0.06em; color: var(--text-muted);
}
.badges { display: flex; flex-wrap: wrap; gap: 0.7rem 1.4rem; margin-top: 2.5rem; }
.badges li {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-display); font-size: 0.82rem; letter-spacing: 0.04em;
  color: var(--text-muted); border: 1px solid var(--hairline);
  border-radius: 100px; padding: 0.55rem 1rem;
}

/* ---------- FAQ ---------- */
.faq .display { margin-bottom: 3rem; }
.faq__list { border-top: 1px solid var(--hairline); max-width: 900px; }
.faq__item { border-bottom: 1px solid var(--hairline); }
.faq__item summary {
  list-style: none; cursor: pointer; padding: 1.5rem 3rem 1.5rem 0; position: relative;
  font-family: var(--font-display); font-weight: 500; font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  letter-spacing: -0.01em; color: var(--text);
  transition: color var(--dur-micro);
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary:hover { color: var(--accent-hi); }
.faq__mark { position: absolute; right: 0; top: 50%; width: 16px; height: 16px; transform: translateY(-50%); }
.faq__mark::before, .faq__mark::after {
  content: ""; position: absolute; background: var(--accent); transition: transform var(--dur-micro) var(--ease-micro);
}
.faq__mark::before { top: 50%; left: 0; width: 16px; height: 2px; transform: translateY(-50%); }
.faq__mark::after { left: 50%; top: 0; width: 2px; height: 16px; transform: translateX(-50%); }
.faq__item[open] .faq__mark::after { transform: translateX(-50%) scaleY(0); }
.faq__a { overflow: hidden; }
.faq__a p { padding-bottom: 1.6rem; color: var(--text-muted); max-width: 70ch; }

/* ---------- Final + Footer ---------- */
.final { position: relative; background: var(--bg-deep); overflow: hidden; }
.final__canvas { opacity: 0.7; }
.final__inner { position: relative; z-index: 2; padding-block: var(--section-pad) 5rem; text-align: center; }
.final .display--xl { max-width: 18ch; margin: 0 auto 1.6rem; }
.final .lead { margin: 0 auto 2.5rem; text-align: center; }
.final .hero__form { margin-inline: auto; }
.final .signup-form { margin-inline: auto; justify-content: center; }
.final .form-counter, .final .form-upsell { text-align: center; }

.footer { position: relative; z-index: 2; border-top: 1px solid var(--hairline); padding-block: 3rem; }
.footer__inner { display: grid; gap: 1.2rem; }
.footer__brand { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; }
.footer__brand p { color: var(--text-faint); font-size: 0.85rem; }
.footer__links { display: flex; flex-wrap: wrap; gap: 1.2rem 2rem; }
.footer__links a { color: var(--text-muted); font-size: 0.9rem; transition: color var(--dur-micro); }
.footer__links a:hover { color: var(--accent); }
.footer__audience { gap: 1rem 1.5rem; }
.footer__audience-label { color: var(--text-faint); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; align-self: center; }
.footer__social { display: flex; gap: 1.1rem; align-items: center; }
.footer__social a { color: var(--text-muted); display: inline-flex; transition: color var(--dur-micro), transform var(--dur-micro); }
.footer__social a:hover { color: var(--accent); transform: translateY(-2px); }
.footer__social svg { display: block; }
.footer__copy { color: var(--text-faint); font-size: 0.85rem; }
.footer__fine { color: var(--text-faint); font-size: 0.75rem; max-width: 70ch; line-height: 1.5; opacity: 0.8; }


/* ---------- Kitchen scrollytelling ---------- */
/* Section height sets the scroll length of the whole sequence (the stage is
   sticky for one viewport; the remainder is the scrubbed scroll distance).
   Lower = the frame cross-fades + captions play over less scrolling. */
.kitchen { position: relative; height: 340vh; background: var(--bg-deep); }
.kitchen.is-static { height: 100vh; }
.kitchen__stage {
  position: sticky; top: 0; height: 100vh; overflow: hidden;
  background: var(--bg-deep);
}
.kitchen__svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.kitchen__stage::after {
  content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background: radial-gradient(120% 95% at 50% 42%, transparent 52%, rgba(6,9,12,0.62) 100%);
}
.k-water { transition: none; }
/* When an AI photo backdrop is wired in, hide the vector environment
   (faucet / dial / glass overlays stay vector for crisp zoom + UI). */
.k-has-photo #k-vectorbg { display: none; }
#k-photo-scrim { display: none; }
.k-has-photo #k-photo-scrim { display: block; }
/* Dial screen type (SVG, scales with camera) */
.k-lbl { fill: var(--text-muted); font-family: var(--font-display); font-size: 6px; font-weight: 500; letter-spacing: 0.12em; text-anchor: middle; }
.k-val { fill: var(--text); font-family: var(--font-display); font-size: 15px; font-weight: 500; text-anchor: middle; }
.k-on  { fill: #4FC3D6; font-family: var(--font-display); font-size: 5px; font-weight: 500; }
.k-title { fill: var(--text-faint); font-family: var(--font-display); font-size: 5px; font-weight: 500; letter-spacing: 0.22em; text-anchor: middle; }
.k-flav { fill: var(--text-muted); font-family: var(--font-body); font-size: 8.5px; font-weight: 400; text-anchor: middle; }
/* Captions overlay — centred near the top of the stage, clear of the
   top-right loupe UI, so it reads as a title over the scene rather than
   being tucked in a corner. */
.kitchen__captions {
  position: absolute; top: 12vh; left: 50%; transform: translateX(-50%); z-index: 3;
  width: min(42ch, 90vw); text-align: center; pointer-events: none;
}
.k-cap {
  position: absolute; top: 0; left: 0; right: 0; margin: 0;
  font-family: var(--font-display); font-weight: 500;
  font-size: clamp(1.5rem, 3.4vw, 2.9rem); letter-spacing: -0.02em; line-height: 1.04;
  color: var(--text); opacity: 0; transition: opacity 0.5s var(--ease-micro);
  text-shadow: 0 2px 30px rgba(6,9,12,0.8);
}
.k-cap__no { display: block; font-size: 0.72rem; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 0.7rem; }
.kitchen__scrollhint {
  position: absolute; bottom: 3vh; left: 50%; transform: translateX(-50%); z-index: 3;
  font-family: var(--font-display); font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-faint);
  transition: opacity 0.4s var(--ease-micro); pointer-events: none;
}
@media (max-width: 640px) {
  .kitchen__captions { top: 10vh; width: min(28ch, 88vw); }
}

/* ---------- Reveal scaffolding ----------
   GSAP solely owns the animated properties (transform/opacity) so nothing
   competes with it. The only CSS hiding is an opacity FOUC guard that JS
   removes — and that fails safe (content shows if JS/GSAP never load). */
.preanim [data-split],
.preanim .reveal-rise { opacity: 0; }
/* Word-mask structure (words only exist after JS splits a heading).
   padding-bottom gives descenders (y, g, p, j) room inside the overflow clip;
   the equal negative margin-bottom keeps line spacing unchanged. The JS hide
   state translates the inner past this taller box so nothing peeks pre-reveal. */
[data-split] .word { display: inline-block; overflow: hidden; vertical-align: top; padding-bottom: 0.22em; margin-bottom: -0.22em; }
.word-inner { display: inline-block; will-change: transform; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  /* never hide content for reduced-motion users, even pre-JS */
  .preanim [data-split],
  .preanim .reveal-rise { opacity: 1; }
  [data-split] .word { overflow: visible; }
  .scroll-hint__dot { animation: none; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

/* ---------- Inline reference markers ---------- */
.ref { font-size: 0.62em; line-height: 0; }
.ref a { color: var(--accent); text-decoration: none; font-weight: 500; }
.ref a:hover { text-decoration: underline; }
.invert .ref a { color: var(--accent-deep); }

/* ---------- The science (evidence band) ---------- */
.science { background: var(--bg-deep); }
.science__head { max-width: 20ch; }
.science__lead { max-width: 44ch; margin-top: 1.5rem; color: var(--text); }

.science__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
  margin-top: clamp(3rem, 6vw, 5rem);
}
.sci-card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.sci-card__stat {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.75rem, 6vw, 4rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--accent);
}
.sci-card__unit { font-size: 0.4em; color: var(--text-muted); margin-left: 0.12em; letter-spacing: 0; }
.sci-card__label { color: var(--text-muted); font-size: 0.98rem; line-height: 1.45; }

.science__cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  margin-top: clamp(3rem, 6vw, 5rem);
}
.science__prose { max-width: none; }
.science__sub {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 1rem;
}
.science__prose em { font-family: var(--font-serif); font-style: italic; color: var(--text); }

@media (max-width: 760px) {
  .science__stats, .science__cols { grid-template-columns: 1fr; }
}

/* ---------- The Taste ---------- */
.taste { background: var(--bg); }
.taste__head { max-width: 22ch; }
.taste__lead { max-width: 52ch; margin-top: 1.5rem; color: var(--text); }
.taste__lead em { font-family: var(--font-serif); font-style: italic; color: var(--text); }

.taste__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gutter);
  margin-top: clamp(3rem, 6vw, 5rem);
}
.taste__card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 3.5vw, 2.75rem);
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.taste__quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.55rem, 3.2vw, 2.3rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--accent-hi);
}
.taste__attr { color: var(--text-muted); font-size: 1rem; line-height: 1.55; }
.taste__close { max-width: 60ch; margin-top: clamp(2.5rem, 5vw, 3.5rem); }

@media (max-width: 760px) {
  .taste__cards { grid-template-columns: 1fr; }
}

/* ---------- References ---------- */
.refs { margin-top: clamp(3rem, 6vw, 4.5rem); border-top: 1px solid var(--hairline); padding-top: 1.5rem; }
.refs__summary {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.refs__summary::-webkit-details-marker { display: none; }
.refs__summary::before { content: "+"; color: var(--accent); font-size: 1.1em; line-height: 1; }
.refs[open] .refs__summary::before { content: "–"; }
.refs__list {
  margin-top: 1.5rem;
  padding-left: 1.5rem;
  color: var(--text-faint);
  font-size: 0.85rem;
  line-height: 1.5;
  display: grid;
  gap: 0.7rem;
  max-width: 92ch;
}
.refs__list li { scroll-margin-top: 96px; }
.refs__list li::marker { color: var(--accent); font-family: var(--font-display); font-size: 0.9em; }
.refs__list em { font-style: italic; color: var(--text-muted); }
.refs__list a { color: var(--accent); text-decoration: none; }
.refs__list a:hover { text-decoration: underline; }
.refs__list li:target { color: var(--text); }
.refs__note { margin-top: 1.5rem; font-size: 0.78rem; color: var(--text-faint); max-width: 72ch; font-style: italic; }

/* ---------- Mineral list (inverted "What Goes In" section) ---------- */
.minerals { margin-top: clamp(2rem, 4vw, 3rem); border-top: 1px solid var(--inv-hairline); padding-top: clamp(1.5rem, 3vw, 2.5rem); }
.minerals__lead { font-size: 1.1rem; line-height: 1.5; color: var(--inv-text); max-width: 62ch; }
.minerals__lead strong { font-weight: 600; }
.minerals__list { list-style: none; display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }
.minerals__item {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: #fff;
  border: 1px solid var(--inv-hairline);
  border-radius: 999px;
  padding: 0.45rem 1rem 0.45rem 0.5rem;
}
.minerals__sym {
  display: inline-grid;
  place-items: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.4rem;
  background: var(--accent-deep);
  color: #fff;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: -0.01em;
}
.minerals__name { color: var(--inv-text); font-size: 0.95rem; font-weight: 500; }
.minerals__more { margin-top: 1.5rem; color: var(--inv-muted); font-size: 0.95rem; line-height: 1.5; max-width: 62ch; }

/* mix-it-your-way recipes (inverted "What Goes In" section) */
/* ---------- Interactive mixer — a dark device-style panel on the light band */
.mixer {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  background: var(--bg);
  color: var(--text);
  border-radius: 24px;
  padding: clamp(1.8rem, 3.5vw, 3rem);
  box-shadow: 0 30px 80px rgba(6, 9, 12, 0.35);
}
.mixer__eyebrow {
  font-family: var(--font-display); font-size: 0.8125rem; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 0.8rem;
}
.mixer__lead { color: var(--text-muted); max-width: 62ch; line-height: 1.55; }
.mixer__body {
  display: grid; grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  margin-top: clamp(1.8rem, 3vw, 2.6rem);
  align-items: start;
}
/* visual */
.mixer__vis { display: flex; flex-direction: column; align-items: center; position: sticky; top: 96px; }
.mixer__glasswrap { filter: drop-shadow(0 20px 44px var(--mix-glow, rgba(79, 195, 214, 0.28))); transition: filter 0.6s var(--ease-micro); }
.mixer__glass { width: min(230px, 56vw); height: auto; display: block; }
.mixer__water, .mixer__surface { transition: opacity 0.5s; }
#mixStopA, #mixStopB { transition: stop-color 0.5s; }
/* --bubspeed (set by JS from the Energy level) scales every bubble's rise
   time: 1 = calm, smaller = fizzier. */
.mixer__bubbles circle { animation: mix-bub calc(var(--bubspeed, 1) * 4.2s) linear infinite; }
.mixer__bubbles .b2 { animation-duration: calc(var(--bubspeed, 1) * 5.1s); animation-delay: -1.6s; }
.mixer__bubbles .b3 { animation-duration: calc(var(--bubspeed, 1) * 3.6s); animation-delay: -0.9s; }
.mixer__bubbles .b4 { animation-duration: calc(var(--bubspeed, 1) * 5.8s); animation-delay: -2.8s; }
.mixer__bubbles .b5 { animation-duration: calc(var(--bubspeed, 1) * 4.6s); animation-delay: -3.4s; }
.mixer__bubbles .b6 { animation-duration: calc(var(--bubspeed, 1) * 6.4s); animation-delay: -2.1s; }
.mixer__bubbles .e1 { animation-duration: calc(var(--bubspeed, 1) * 3.9s); animation-delay: -0.5s; }
.mixer__bubbles .e2 { animation-duration: calc(var(--bubspeed, 1) * 4.9s); animation-delay: -2.3s; }
.mixer__bubbles .e3 { animation-duration: calc(var(--bubspeed, 1) * 3.3s); animation-delay: -1.1s; }
.mixer__bubbles .e4 { animation-duration: calc(var(--bubspeed, 1) * 5.5s); animation-delay: -3.9s; }
.mixer__bubbles .e5 { animation-duration: calc(var(--bubspeed, 1) * 4.4s); animation-delay: -2.9s; }
@keyframes mix-bub {
  0% { transform: translateY(0); opacity: 0; }
  12% { opacity: 0.9; }
  88% { opacity: 0.5; }
  100% { transform: translateY(-196px); opacity: 0; }
}
.mixer__sparkles circle { animation: mix-spark 2.8s ease-in-out infinite; }
.mixer__sparkles circle:nth-child(2n) { animation-delay: -1.2s; }
.mixer__sparkles circle:nth-child(3n) { animation-delay: -2s; }
@keyframes mix-spark { 0%, 100% { opacity: 0.15; } 50% { opacity: 0.9; } }
@media (prefers-reduced-motion: reduce) {
  .mixer__bubbles circle, .mixer__sparkles circle { animation: none; }
}
.mixer__readout {
  margin-top: 1.2rem; text-align: center;
  font-family: var(--font-display); font-size: 0.95rem; font-weight: 500;
  letter-spacing: 0.02em; color: var(--text); max-width: 30ch; min-height: 2.6em;
}
.mixer__cta { margin-top: 0.9rem; }
/* controls */
.mixer__ch { margin-bottom: 1.5rem; }
.mixer__ch-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 0.65rem; }
.mixer__ch-name { font-family: var(--font-display); font-weight: 500; font-size: 1rem; color: var(--text); }
.mixer__ch-val { font-family: var(--font-display); font-weight: 500; font-size: 1rem; color: var(--accent-hi); letter-spacing: 0.06em; }
.mixer__ch-val.is-off { color: var(--text-faint); }
.mixer__inf-hint { font-size: 0.8rem; color: var(--text-faint); }
.mixer__range {
  -webkit-appearance: none; appearance: none; width: 100%; height: 22px;
  background: transparent; cursor: pointer; display: block;
}
.mixer__range::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px;
  background: linear-gradient(to right, var(--sc, var(--accent)) var(--p, 50%), rgba(244, 246, 248, 0.14) var(--p, 50%));
}
.mixer__range::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 18px; border-radius: 50%; margin-top: -7px;
  background: var(--sc, var(--accent-hi)); border: 3px solid var(--bg);
  box-shadow: 0 0 0 1px rgba(244, 246, 248, 0.25), 0 2px 10px rgba(6, 9, 12, 0.6);
}
.mixer__range::-moz-range-track {
  height: 4px; border-radius: 2px;
  background: linear-gradient(to right, var(--sc, var(--accent)) var(--p, 50%), rgba(244, 246, 248, 0.14) var(--p, 50%));
}
.mixer__range::-moz-range-thumb {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--sc, var(--accent-hi)); border: 3px solid var(--bg);
  box-shadow: 0 0 0 1px rgba(244, 246, 248, 0.25), 0 2px 10px rgba(6, 9, 12, 0.6);
}
/* Channel colors — same palette as the MineralDose app. The share sliders
   get each infusion's own color from JS (--sc per row). */
.mixer__ch[data-ch="m"] { --sc: #4FC3D6; }
.mixer__ch[data-ch="h"] { --sc: #5CA8E8; }
.mixer__ch[data-ch="e"] { --sc: #E8A05C; }
.mixer__ch[data-ch="f"] { --sc: #B07CE8; }
.mixer__ch .mixer__ch-val:not(.is-off) { color: var(--sc, var(--accent-hi)); }
.mixer__inf { margin-bottom: 1.5rem; }
.mixer__chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.mixer__chip {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-display); font-size: 0.875rem; font-weight: 500;
  color: var(--text-muted); background: var(--surface);
  border: 1px solid var(--hairline); border-radius: 999px;
  padding: 0.5rem 0.95rem; cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.mixer__chip i { width: 10px; height: 10px; border-radius: 50%; background: var(--sw); flex: none; }
.mixer__chip:hover { border-color: rgba(79, 195, 214, 0.4); color: var(--text); }
.mixer__chip[aria-pressed="true"] {
  border-color: var(--accent); color: var(--text);
  background: rgba(79, 195, 214, 0.1);
}
.mixer__chip:disabled { opacity: 0.4; cursor: not-allowed; }
.mixer__pcts { display: grid; gap: 0.55rem; margin-top: 0.9rem; }
.mixer__pct { display: grid; grid-template-columns: 92px 1fr 52px; gap: 0.8rem; align-items: center; }
.mixer__pct-name { font-size: 0.85rem; color: var(--text-muted); font-family: var(--font-display); }
.mixer__pct-val { font-size: 0.85rem; color: var(--accent-hi); font-family: var(--font-display); text-align: right; }
.mixer__presets { border-top: 1px solid var(--hairline); padding-top: 1.3rem; }
.mixer__presets-label { font-size: 0.85rem; color: var(--text-faint); margin-bottom: 0.7rem; }
.mixer__preset-row { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.mixer__preset {
  font-family: var(--font-display); font-size: 0.8rem; font-weight: 500;
  color: var(--text-muted); background: transparent;
  border: 1px solid var(--hairline); border-radius: 999px;
  padding: 0.42rem 0.85rem; cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.mixer__preset:hover { border-color: var(--accent); color: var(--text); }
.mixer__preset.is-active {
  border-color: var(--accent); color: var(--text);
  background: rgba(79, 195, 214, 0.12);
}
.mixer__legend { margin-top: 1.6rem; color: var(--text-faint); font-size: 0.82rem; }
.mixer__legend strong { color: var(--text-muted); font-weight: 600; }
@media (max-width: 900px) {
  .mixer__body { grid-template-columns: 1fr; }
  .mixer__vis { position: static; }
}

/* ---------- Refills & subscription (within the Cartridges section) ---------- */
.refill { margin-top: clamp(3rem, 6vw, 5rem); }
.refill__intro { max-width: 64ch; }
.refill__h { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.6rem, 3vw, 2.4rem); letter-spacing: -0.02em; line-height: 1.1; color: var(--text); margin: 0.5rem 0 1rem; max-width: 24ch; }
.refill__lead { color: var(--text-muted); font-size: 1.05rem; line-height: 1.5; max-width: 62ch; }
.refill__lead strong { color: var(--text); font-weight: 500; }
.refill__flavors { color: var(--text-faint); font-size: 0.9rem; margin-top: 0.85rem; }

.refill__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--gutter); margin-top: clamp(2rem, 4vw, 3rem); align-items: stretch; }
.refill__card { background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: clamp(1.4rem, 2.5vw, 2rem); display: flex; flex-direction: column; }
.refill__card--feature { border-color: color-mix(in srgb, var(--accent) 35%, var(--hairline)); }
.refill__card-head { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; margin-bottom: 0.7rem; }
.refill__name { font-family: var(--font-display); font-weight: 500; font-size: 1.25rem; letter-spacing: -0.01em; color: var(--text); }
.refill__pill { font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); border-radius: 999px; padding: 0.25rem 0.6rem; white-space: nowrap; }
.refill__sub { color: var(--text-muted); font-size: 0.9rem; line-height: 1.45; margin-bottom: 1.1rem; }
.refill__sizes { list-style: none; display: grid; gap: 0.6rem; margin-top: auto; }
.refill__size { display: grid; grid-template-columns: auto auto; justify-content: space-between; align-items: baseline; row-gap: 0.3rem; padding: 0.75rem 0.9rem; border-radius: var(--radius); background: var(--bg-deep); border: 1px solid var(--hairline); }
.refill__size--best { border-color: color-mix(in srgb, var(--accent) 55%, transparent); background: color-mix(in srgb, var(--accent) 8%, var(--bg-deep)); }
.refill__sz { font-family: var(--font-display); font-weight: 500; color: var(--text); font-size: 0.95rem; }
.refill__pr { font-family: var(--font-display); font-weight: 500; color: var(--accent); font-size: 1.2rem; text-align: right; }
.refill__pr--tbd { font-size: 0.85rem; color: var(--text-muted); font-family: var(--font-body); font-weight: 400; }
.refill__li { grid-column: 1 / -1; color: var(--text-faint); font-size: 0.8rem; }
.refill__best { grid-column: 1 / -1; color: var(--accent); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 500; }
.refill__value { margin-top: 1rem; padding-top: 0.85rem; border-top: 1px solid var(--hairline); color: var(--accent); font-size: 0.82rem; line-height: 1.45; }
.refill__value strong { color: var(--accent-hi); font-weight: 600; }

.refill__plan { margin-top: var(--gutter); background: color-mix(in srgb, var(--accent) 8%, var(--surface)); border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent); border-radius: var(--radius-lg); padding: clamp(1.5rem, 3vw, 2.25rem); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; }
.refill__plan-copy { max-width: 62ch; }
.refill__eyebrow { font-family: var(--font-display); font-size: 0.78rem; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.refill__eyebrow--accent { color: var(--accent); }
.refill__plan-h { font-family: var(--font-display); font-weight: 500; font-size: 1.3rem; color: var(--text); margin: 0.4rem 0 0.6rem; }
.refill__plan-text { color: var(--text-muted); font-size: 0.95rem; line-height: 1.5; }
.refill__cta { color: var(--accent); font-weight: 500; text-decoration: none; white-space: nowrap; display: inline-flex; align-items: center; gap: 0.4rem; transition: gap var(--dur-micro) var(--ease-micro); }
.refill__cta:hover { gap: 0.75rem; }
.refill__disclaimer { margin-top: 1.25rem; color: var(--text-faint); font-size: 0.8rem; max-width: 80ch; }
@media (max-width: 1000px) { .refill__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .refill__grid { grid-template-columns: 1fr; } }

/* =========================================================
   New-to-RO explainer page (new-to-ro.html)
   ========================================================= */
.roedu-hero { min-height: 62svh; }
.roedu-hero .lead { margin-top: 1.5rem; max-width: 46ch; }
.hero__newlink { margin-top: 1.4rem; color: var(--text-muted); font-size: 0.95rem; }
.hero__newlink a { color: var(--accent); text-decoration: none; font-weight: 500; }
.hero__newlink a:hover { text-decoration: underline; }
.nav__links a[aria-current="page"] { color: var(--accent); }
.roedu-eyebrow { font-family: var(--font-display); font-size: 0.8125rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 1.5rem; }
.roedu-jump { margin-top: 1.75rem; }
.roedu-jump a { color: var(--accent); text-decoration: none; font-weight: 500; }
.roedu-jump a:hover { text-decoration: underline; }

.roedu-sec--alt { background: var(--bg-deep); }
.roedu-take {
  font-family: var(--font-display); font-weight: 500;
  font-size: clamp(1.25rem, 2.4vw, 1.7rem); line-height: 1.3; letter-spacing: -0.01em;
  color: var(--accent); max-width: 30ch; margin: 1.5rem 0 1.75rem;
}
.roedu-take em { font-family: var(--font-serif); font-style: italic; color: var(--accent-hi); }
.roedu-prose { font-size: 1.05rem; line-height: 1.6; }
.roedu-prose p + p { margin-top: 1.1em; }

/* analogy callout */
.analogy {
  margin: 2rem 0 0; max-width: 60ch;
  background: color-mix(in srgb, var(--accent) 7%, var(--surface));
  border-left: 3px solid var(--accent); border-radius: var(--radius);
  padding: clamp(1.1rem, 2.5vw, 1.6rem);
}
.analogy__label { font-family: var(--font-display); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.6rem; }
.analogy__text { color: var(--text); font-size: 1.08rem; line-height: 1.5; }
.analogy__text strong { color: var(--accent-hi); font-weight: 600; }

/* diagrams */
.diagram { margin: clamp(2.5rem, 5vw, 3.5rem) 0 0; background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: clamp(1.4rem, 3vw, 2.5rem); overflow-x: auto; }
.diagram__svg { width: 100%; min-width: 540px; height: auto; display: block; }
.diagram__cap { margin-top: 1.1rem; color: var(--text-faint); font-size: 0.85rem; line-height: 1.4; max-width: 80ch; }
.dg-line { stroke: var(--accent); stroke-width: 3; fill: none; }
.dg-line--muted { stroke: var(--text-faint); }
.dg-arrow { fill: var(--accent); }
.dg-box { fill: var(--bg-deep); stroke: var(--hairline); stroke-width: 1.5; }
.dg-box--key { stroke: color-mix(in srgb, var(--accent) 45%, var(--hairline)); }
.dg-box--muted { fill: var(--bg-deep); stroke: var(--hairline); opacity: 0.65; }
.dg-box--accent { fill: color-mix(in srgb, var(--accent) 12%, var(--bg-deep)); stroke: var(--accent); stroke-width: 2; }
.dg-label { fill: var(--text); font-family: var(--font-display); font-size: 19px; font-weight: 500; text-anchor: middle; }
.dg-label--accent { fill: var(--accent-hi); font-size: 21px; }
.dg-label--muted { fill: var(--text-muted); }
.dg-sub { fill: var(--text-muted); font-family: var(--font-body); font-size: 14px; text-anchor: middle; }
.dg-port { fill: var(--accent); font-family: var(--font-display); font-size: 14px; font-weight: 600; letter-spacing: 0.05em; }
.dg-flowlabel { fill: var(--text-muted); font-family: var(--font-body); font-size: 14px; text-anchor: middle; }

/* install steps */
.roedu-steps { list-style: none; margin: clamp(2rem, 4vw, 3rem) 0 0; display: grid; grid-template-columns: 1fr; gap: 1rem; max-width: 72ch; }
.roedu-step { display: flex; gap: 1.1rem; align-items: flex-start; background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius); padding: 1.15rem 1.3rem; }
.roedu-step__num { flex: none; width: 2.3rem; height: 2.3rem; border-radius: 50%; background: color-mix(in srgb, var(--accent) 15%, var(--surface)); color: var(--accent); font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; display: grid; place-items: center; }
.roedu-step__title { font-family: var(--font-display); font-weight: 500; font-size: 1.1rem; color: var(--text); margin-bottom: 0.3rem; }
.roedu-step__desc { color: var(--text-muted); font-size: 0.97rem; line-height: 1.5; }
.roedu-step__desc strong { color: var(--text); font-weight: 500; }
.roedu-note { margin-top: 1.75rem; color: var(--text-muted); font-size: 0.95rem; max-width: 62ch; border-left: 2px solid var(--accent-deep); padding-left: 1rem; }

/* CTA */
.roedu-cta { background: var(--bg-deep); }
.roedu-cta__inner { text-align: center; max-width: 46rem; margin: 0 auto; }
.roedu-cta .lead { max-width: 46ch; margin-left: auto; margin-right: auto; }
.roedu-cta__actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-top: 2.25rem; }
.roedu-btn { display: inline-flex; align-items: center; gap: 0.45rem; padding: 0.9rem 1.6rem; border-radius: 999px; border: 1px solid var(--hairline); color: var(--text); text-decoration: none; font-weight: 500; transition: gap var(--dur-micro) var(--ease-micro), border-color var(--dur-micro) var(--ease-micro), background var(--dur-micro) var(--ease-micro); }
.roedu-btn:hover { gap: 0.7rem; border-color: var(--accent); }
.roedu-btn--primary { background: var(--accent); color: var(--bg-deep); border-color: var(--accent); }
.roedu-btn--primary:hover { background: var(--accent-hi); border-color: var(--accent-hi); }
@media (max-width: 620px) {
  .roedu-cta__inner { max-width: 100%; }
  .roedu-step { flex-direction: row; }
}

/* ---------- Legal pages (privacy.html) ---------- */
.legal { padding-block: clamp(7rem, 14vh, 11rem) var(--section-pad); }
.legal__inner { max-width: var(--maxw); }
.legal__title { font-size: clamp(2.5rem, 6vw, 4rem); line-height: 1.02; }
.legal__meta { color: var(--text-faint); font-size: 0.9rem; margin: 1rem 0 2.5rem; }
.legal__body { color: var(--text-muted); font-size: 1rem; line-height: 1.65; max-width: 72ch; }
.legal__lead { color: var(--text); font-size: 1.12rem; line-height: 1.55; margin-bottom: 1.1rem; max-width: 64ch; }
.legal__body h2 { font-family: var(--font-display); font-weight: 500; font-size: 1.3rem; letter-spacing: -0.01em; color: var(--text); margin: 2.6rem 0 0.8rem; }
.legal__body p { margin-bottom: 1rem; }
.legal__body strong { color: var(--text); font-weight: 500; }
.legal__body a { color: var(--accent); text-decoration: none; }
.legal__body a:hover { text-decoration: underline; }
.legal__body ul { list-style: none; display: grid; gap: 0.7rem; margin: 0.4rem 0 1.3rem; }
.legal__body li { position: relative; padding-left: 1.35rem; }
.legal__body li::before { content: ""; position: absolute; left: 0; top: 0.6em; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.legal__back { margin-top: clamp(2.5rem, 5vw, 3.5rem); padding-top: 1.5rem; border-top: 1px solid var(--hairline); }
.legal__back a { color: var(--accent); text-decoration: none; font-weight: 500; }
.legal__back a:hover { text-decoration: underline; }

/* ---------- Contact form ---------- */
.cform { display: grid; gap: 1.1rem; margin-top: 2.2rem; max-width: 560px; }
.cform label {
  display: grid; gap: 0.5rem;
  font-family: var(--font-display); font-size: 0.85rem; font-weight: 500;
  letter-spacing: 0.02em; color: var(--text-muted);
}
.cform input, .cform textarea {
  width: 100%;
  background: var(--surface); border: 1px solid var(--hairline);
  border-radius: 12px; padding: 0.85rem 1rem;
  color: var(--text); font-family: var(--font-body); font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.cform input::placeholder, .cform textarea::placeholder { color: var(--text-faint); }
.cform input:focus, .cform textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79, 195, 214, 0.15);
}
.cform textarea { min-height: 170px; resize: vertical; }
.cform button {
  justify-self: start;
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-display); font-size: 0.95rem; font-weight: 500;
  color: var(--bg-deep); background: var(--accent);
  border: none; border-radius: 100px; padding: 0.85rem 1.7rem;
  cursor: pointer; transition: background 0.2s, transform 0.2s;
}
.cform button:hover { background: var(--accent-hi); }
.cform button:disabled { opacity: 0.55; cursor: wait; }
/* honeypot — visually gone, still in the DOM for bots to trip on */
.hp {
  position: absolute !important; left: -9999px !important; top: auto !important;
  width: 1px !important; height: 1px !important; overflow: hidden !important;
}
.contact-alt { margin-top: 2rem; color: var(--text-faint); font-size: 0.92rem; }
.contact-alt a { color: var(--accent); text-decoration: none; }
.contact-alt a:hover { text-decoration: underline; }
.footer__fine a { color: var(--text-muted); }

/* ---------- Dose-journey scroll motif (Solution → Engine) ---------- */
.dosepath {
  position: fixed; left: clamp(0.9rem, 2.2vw, 2.2rem); top: 18vh; height: 64vh; width: 2px;
  background: rgba(244, 246, 248, 0.08); border-radius: 2px;
  opacity: 0; transition: opacity 0.45s var(--ease-micro);
  pointer-events: none; z-index: 50;
}
.dosepath.is-on { opacity: 1; }
.dosepath__fill {
  position: absolute; top: 0; left: 0; width: 100%; height: var(--dp, 0%);
  background: linear-gradient(180deg, rgba(79, 195, 214, 0.15), var(--accent));
  border-radius: 2px;
}
.dosepath__drop {
  position: absolute; left: 50%; top: var(--dp, 0%);
  width: 9px; height: 9px; border-radius: 50%;
  transform: translate(-50%, -50%);
  background: var(--accent-hi);
  box-shadow: 0 0 12px rgba(127, 224, 239, 0.9), 0 0 28px rgba(79, 195, 214, 0.5);
}
@media (max-width: 1000px) { .dosepath { display: none; } }

/* ---------- Final CTA — pour render payoff ---------- */
.final__bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.final__bg img {
  width: 100%; height: 100%; object-fit: cover; object-position: 60% center;
  filter: blur(5px) brightness(0.5) saturate(1.05);
  transform: scale(1.06); /* hide blur edges */
}
.final__bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(180deg, var(--bg-deep) 0%, rgba(6, 9, 12, 0.55) 26%, rgba(6, 9, 12, 0.6) 70%, rgba(6, 9, 12, 0.94) 100%);
}
.final__canvas { mix-blend-mode: screen; }

/* ---------- Depth pass — cards lift toward the light ---------- */
.sci-card, .taste__card, .refill__card {
  transition: transform 0.35s var(--ease-micro), border-color 0.35s, box-shadow 0.35s;
}
.sci-card:hover, .taste__card:hover, .refill__card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--hairline));
  box-shadow: 0 16px 40px rgba(6, 9, 12, 0.45);
}

/* ---------- Accessibility (2026-07-09 WCAG 2.1 AA pass) ---------- */
/* Skip link: visually hidden until keyboard-focused. */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 300;
  background: var(--accent); color: var(--bg-deep);
  font-family: var(--font-display); font-size: 0.9rem;
  padding: 0.7rem 1.2rem; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }
/* Remaining ambient loops stop under reduced motion (hero + grain are gated
   at their declarations; GSAP/Lenis are gated in main.js). */
@media (prefers-reduced-motion: reduce) {
  .knob-knurl,
  .mixer__bubbles circle,
  .mixer__sparkles circle { animation: none; }
}