/* ==========================================================================
   Single-product research store — one stylesheet, no framework.
   Direction: a laboratory specification sheet. Warm paper, ink, one ultramarine
   accent for interaction only. Serif for voice, mono for data, sans for reading.
   ========================================================================== */

@font-face { font-family: "Instrument Serif"; src: url("../fonts/instrument-serif-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Instrument Serif"; src: url("../fonts/instrument-serif-latin-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Geist"; src: url("../fonts/geist-latin-wght-normal.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("../fonts/geist-mono-latin-wght-normal.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }

:root {
  --paper: #f3f1ea;
  --paper-2: #e9e6dc;
  --card: #fbfaf6;
  --ink: #101215;
  --ink-2: #2e333a;
  --mute: #5c6169;
  --line: rgba(16, 18, 21, .13);
  --line-2: rgba(16, 18, 21, .24);
  --accent: #2f3fd6;
  --accent-soft: rgba(47, 63, 214, .09);
  --ok: #1f7a50;
  --serif: "Instrument Serif", "Times New Roman", serif;
  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --ease: cubic-bezier(.32, .72, 0, 1);
  --r: 14px;
  --gut: clamp(16px, 4vw, 40px);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 16px/1.6 var(--sans); font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
button, input, select { font: inherit; color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 400; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 var(--gut); }
.mono, .mono-label { font-family: var(--mono); }
.mono-label { font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--mute); display: block; }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
.dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px rgba(31, 122, 80, .14); }

/* ---------------------------------------------------------------- buttons */
.btn {
  --bg: transparent; --fg: var(--ink); --bd: var(--line-2);
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  min-height: 46px; padding: 0 22px; border-radius: 999px;
  background: var(--bg); color: var(--fg); border: 1px solid var(--bd);
  font-weight: 500; font-size: 15px; letter-spacing: -.005em; text-decoration: none; cursor: pointer;
  transition: transform .5s var(--ease), background-color .3s, color .3s, border-color .3s, box-shadow .5s var(--ease);
}
.btn:hover { color: var(--fg); transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(.99); }
.btn--ink { --bg: var(--ink); --fg: var(--paper); --bd: var(--ink); }
.btn--ink:hover { --bg: #000; box-shadow: 0 10px 30px -12px rgba(16, 18, 21, .55); }
.btn--paper { --bg: var(--paper); --fg: var(--ink); --bd: var(--paper); }
.btn--line:hover { --bd: var(--ink); }
.btn--sm { min-height: 38px; padding: 0 16px; font-size: 14px; }
.btn--lg { min-height: 58px; padding: 0 28px; font-size: 16px; }
.btn--block { width: 100%; justify-content: space-between; }
.btn__price { font-family: var(--mono); font-size: 15px; font-variant-numeric: tabular-nums; }
.link-arrow { font-weight: 500; text-decoration: none; white-space: nowrap; }
.link-arrow::after { content: " →"; transition: margin .4s var(--ease); }
.link-arrow:hover::after { margin-left: 4px; }

/* ---------------------------------------------------------------- top bar + header */
.topbar { background: var(--ink); color: #c9ccd1; font: 12px/1 var(--mono); letter-spacing: .04em; }
.topbar__in { display: flex; justify-content: center; align-items: center; gap: 16px; min-height: 36px; flex-wrap: wrap; text-align: center; }
.topbar__sep { width: 3px; height: 3px; border-radius: 50%; background: #5c6169; }

.hdr { position: sticky; top: 0; z-index: 50; background: rgba(243, 241, 234, .86); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid transparent; transition: border-color .3s; }
.hdr.is-scrolled { border-bottom-color: var(--line); }
.hdr__in { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand:hover { color: inherit; }
.brand__mark { width: 28px; height: 28px; }
.brand__name { font: 400 26px/1 var(--serif); letter-spacing: -.01em; }
.nav { display: flex; gap: 28px; font-size: 14.5px; }
.nav a { text-decoration: none; color: var(--ink-2); }
.nav a:hover { color: var(--ink); }
.hdr__cta { display: flex; align-items: center; gap: 10px; }
.cart-link { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line-2); }
.cart-link svg { width: 18px; height: 18px; }
.mnav { display: none; position: relative; }
.mnav summary { list-style: none; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line-2); display: grid; place-content: center; gap: 5px; cursor: pointer; }
.mnav summary::-webkit-details-marker { display: none; }
.mnav summary span { display: block; width: 16px; height: 1.5px; background: var(--ink); transition: transform .4s var(--ease); }
.mnav[open] summary span:first-child { transform: translateY(3.25px) rotate(45deg); }
.mnav[open] summary span:last-child { transform: translateY(-3.25px) rotate(-45deg); }
.mnav__panel { position: absolute; right: 0; top: 52px; width: min(280px, calc(100vw - 32px)); background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 8px; box-shadow: 0 30px 60px -30px rgba(16, 18, 21, .35); display: grid; }
.mnav__panel a { padding: 12px 14px; border-radius: 10px; text-decoration: none; }
.mnav__panel a:hover { background: var(--paper); color: var(--ink); }

/* ---------------------------------------------------------------- buy (hero) */
.buy { padding: clamp(24px, 4vw, 48px) 0 clamp(56px, 7vw, 96px); }
.buy__grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: clamp(28px, 4vw, 64px); align-items: start; }

.stage {
  position: sticky; top: 92px; aspect-ratio: 1 / 1.08; border-radius: 22px; overflow: hidden;
  background: radial-gradient(120% 90% at 50% 38%, #fbfaf5 0%, #efece3 55%, #e4e0d4 100%);
  border: 1px solid var(--line);
}
.stage__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px; background-position: center;
  mask-image: radial-gradient(70% 60% at 50% 45%, #000 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 45%, #000 20%, transparent 80%);
  opacity: .55;
}
.stage__notes li:nth-child(even) { left: auto; right: 4%; text-align: right; }
.stage__vial { position: absolute; left: 50%; top: 50%; width: 36%; transform: translate(-50%, -52%); filter: drop-shadow(0 30px 40px rgba(16, 18, 21, .12)); }
.js .stage__vial { animation: float 7s var(--ease) infinite alternate; }
@keyframes float { from { transform: translate(-50%, -52%) rotate(-.6deg); } to { transform: translate(-50%, -55%) rotate(.6deg); } }
.stage__notes { list-style: none; margin: 0; padding: 0; }
.stage__notes li {
  position: absolute; left: 4%; top: var(--y); max-width: 25%;
  font-size: 14px; line-height: 1.35; padding: 10px 12px; border-radius: 10px;
  background: rgba(251, 250, 246, .78); border: 1px solid var(--line); backdrop-filter: blur(6px);
}
.stage__notes .mono-label { font-size: 10px; margin-bottom: 3px; }
.stage__cap { position: absolute; left: 20px; right: 20px; bottom: 16px; font-size: 10.5px; }

.panel { padding-top: 8px; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--ink-2); }
.title { margin: 18px 0 18px; }
.title__main { display: block; font: 400 clamp(56px, 7.4vw, 104px)/.9 var(--serif); letter-spacing: -.025em; }
.title__rest { display: block; margin-top: 14px; font: 500 clamp(15px, 1.4vw, 18px)/1.3 var(--sans); letter-spacing: -.005em; color: var(--ink-2); }
.lede { font-size: 17px; color: var(--ink-2); max-width: 46ch; }

.keyspec { display: grid; grid-template-columns: repeat(4, 1fr); margin: 26px 0 28px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.keyspec div { padding: 14px 0 14px 14px; border-left: 1px solid var(--line); }
.keyspec div:first-child { border-left: 0; padding-left: 0; }
.keyspec dt { font: 10.5px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--mute); }
.keyspec dd { margin: 8px 0 0; font: 500 16px/1 var(--mono); font-variant-numeric: tabular-nums; }

.order fieldset { border: 0; padding: 0; margin: 0 0 18px; min-width: 0; }
.order legend { margin-bottom: 10px; padding: 0; }
.plan__opts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.plan__opt, .pack {
  position: relative; display: grid; cursor: pointer; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--r);
  transition: border-color .25s, box-shadow .4s var(--ease), background-color .25s;
}
.plan__opt { padding: 14px 16px; gap: 4px; }
.plan__opt:hover, .pack:hover { border-color: var(--line-2); }
.plan__opt input, .pack input { position: absolute; opacity: 0; pointer-events: none; }
.plan__opt:has(input:checked), .pack:has(input:checked) { border-color: var(--ink); box-shadow: 0 0 0 1px var(--ink), 0 14px 30px -20px rgba(16, 18, 21, .5); }
.plan__opt:has(input:focus-visible), .pack:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.plan__t { font-weight: 550; font-size: 15px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.plan__d { font-size: 13px; color: var(--mute); line-height: 1.4; }
.pill { font: 500 11px/1 var(--mono); font-style: normal; letter-spacing: .04em; color: var(--accent); background: var(--accent-soft); padding: 5px 8px; border-radius: 99px; }
.interval { display: flex; align-items: center; gap: 12px; margin-top: 10px; padding: 10px 14px; border-radius: var(--r); background: var(--paper-2); }
.js .interval { display: none; }
.js .interval.is-on { display: flex; }
.interval .mono-label { margin: 0; }
.interval select { flex: 1; appearance: none; background: var(--card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23101215' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 14px center; border: 1px solid var(--line-2); border-radius: 10px; padding: 9px 36px 9px 12px; font-size: 15px; }

.packs { display: grid; gap: 10px; }
.pack { grid-template-columns: auto 1fr auto; grid-template-areas: "radio qty price" "radio per price"; column-gap: 14px; row-gap: 2px; align-items: center; padding: 14px 18px 14px 16px; }
.pack::before { content: ""; grid-area: radio; width: 18px; height: 18px; border-radius: 50%; border: 1.5px solid var(--line-2); transition: border .25s, box-shadow .25s; }
.pack:has(input:checked)::before { border: 5.5px solid var(--ink); }
.pack__qty { grid-area: qty; font-weight: 550; font-size: 16px; display: flex; align-items: center; gap: 10px; }
.pack__tag { grid-area: qty; justify-self: end; margin-right: 6px; font: 500 10.5px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); border: 1px solid var(--line-2); padding: 5px 8px; border-radius: 99px; }
.pack__per { grid-area: per; font-size: 13px; color: var(--mute); font-variant-numeric: tabular-nums; }
.pack__price { grid-area: price; font: 500 18px/1 var(--mono); font-variant-numeric: tabular-nums; text-align: right; }
.pack__price s { display: block; font-size: 12px; color: var(--mute); margin-bottom: 4px; }

.ack { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: start; font-size: 13.5px; line-height: 1.45; color: var(--ink-2); margin: 6px 0 16px; cursor: pointer; }
.ack input { width: 18px; height: 18px; margin: 1px 0 0; accent-color: var(--ink); }
.order__note { margin-top: 12px; font-size: 13px; color: var(--mute); text-align: center; }
.order.is-invalid .ack { color: #a3261b; }

.assure { list-style: none; padding: 20px 0 0; margin: 24px 0 0; border-top: 1px solid var(--line); display: grid; gap: 10px; font-size: 14px; color: var(--ink-2); }
.assure li { display: flex; gap: 10px; align-items: center; }
.assure svg { width: 16px; height: 16px; fill: none; stroke: var(--ok); stroke-width: 2; flex: none; }

/* ---------------------------------------------------------------- proof band */
.band { background: var(--ink); color: var(--paper); }
.band__in { display: grid; grid-template-columns: 1.1fr 1.5fr auto; gap: 32px; align-items: center; padding-top: 36px; padding-bottom: 36px; }
.band__lead { font: 400 clamp(22px, 2.2vw, 28px)/1.2 var(--serif); }
.band__nums { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; }
.band__nums div { padding-left: 20px; border-left: 1px solid rgba(243, 241, 234, .18); }
.band__nums dt { font: 10.5px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: #9aa0a8; }
.band__nums dd { margin: 10px 0 0; font: 400 clamp(26px, 2.6vw, 36px)/1 var(--serif); font-variant-numeric: tabular-nums; }
.band .link-arrow { color: var(--paper); }

/* ---------------------------------------------------------------- generic section */
.sec { padding: clamp(72px, 10vw, 136px) 0; border-top: 1px solid var(--line); }
.sec__head { max-width: 640px; margin-bottom: clamp(36px, 5vw, 64px); }
.sec__head h2 { margin: 14px 0 14px; font: 400 clamp(36px, 4.6vw, 60px)/1.02 var(--serif); letter-spacing: -.02em; text-wrap: balance; }
.sec__head p:not(.mono-label) { font-size: 17px; color: var(--ink-2); max-width: 52ch; }
.sec__head--side .btn { margin-top: 24px; }

/* label anatomy */
.anatomy { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(32px, 6vw, 96px); align-items: center; }
.anatomy__vial { max-width: 300px; margin: 0 auto; width: 70%; }
.anatomy__list { list-style: none; margin: 0; padding: 0; display: grid; }
.anatomy__list li { display: grid; grid-template-columns: 44px 1fr; gap: 18px; padding: 22px 0; border-top: 1px solid var(--line); }
.anatomy__list li:last-child { border-bottom: 1px solid var(--line); }
.anatomy__n { width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--ink); display: grid; place-items: center; font: 500 13px/1 var(--mono); }
.anatomy__list h3 { font-weight: 550; font-size: 17px; margin-bottom: 6px; }
.anatomy__list p { color: var(--ink-2); font-size: 15.5px; }

/* spec */
.spec-sec { background: var(--paper-2); }
.spec { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.spec__sheet { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: clamp(22px, 3vw, 40px); box-shadow: 0 40px 80px -60px rgba(16, 18, 21, .45); }
.spec__top { display: flex; justify-content: space-between; padding-bottom: 16px; border-bottom: 2px solid var(--ink); }
.spec__name { font: 400 clamp(24px, 2.4vw, 32px)/1.15 var(--serif); padding: 20px 0 8px; }
.spec__table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec__table th, .spec__table td { text-align: left; padding: 13px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec__table th { font-weight: 450; color: var(--mute); width: 42%; padding-right: 16px; }
.spec__table td { font-family: var(--mono); font-size: 14px; font-variant-numeric: tabular-nums; }
.spec__ruo { margin-top: 18px; font-size: 12.5px; color: var(--mute); }

/* verify steps */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--ink); }
.steps li { padding: 28px 28px 8px 0; }
.steps li + li { padding-left: 28px; border-left: 1px solid var(--line); }
.steps__n { display: block; font: 400 64px/1 var(--serif); color: var(--accent); margin-bottom: 18px; }
.steps h3 { font-weight: 550; font-size: 17px; margin-bottom: 8px; }
.steps p { color: var(--ink-2); font-size: 15.5px; }
.verify__cta { margin-top: 40px; }

/* standing orders */
.so { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: center; }
.so__copy h2 { margin: 14px 0 16px; font: 400 clamp(34px, 4.2vw, 54px)/1.04 var(--serif); letter-spacing: -.02em; text-wrap: balance; }
.so__copy > p:not(.mono-label) { font-size: 17px; color: var(--ink-2); }
.ticks { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 12px; }
.ticks li { position: relative; padding-left: 28px; color: var(--ink-2); }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 8px; width: 12px; height: 7px; border-left: 1.8px solid var(--ok); border-bottom: 1.8px solid var(--ok); transform: rotate(-45deg); }
.so__table { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 10px 26px 22px; }
.so__row { display: grid; grid-template-columns: 1fr 1fr 1.2fr; align-items: baseline; padding: 18px 0; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.so__row span:nth-child(2) { font-family: var(--mono); color: var(--mute); }
.so__row strong { font: 500 18px/1 var(--mono); }
.so__row small { display: block; margin-top: 6px; font-size: 12.5px; color: var(--mute); }
.so__row--head { font: 10.5px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--mute); padding: 16px 0; }
.so__row--head span:nth-child(2) { font-family: var(--mono); }
.so__fine { font-size: 12.5px; color: var(--mute); margin-top: 16px; }

/* how */
.how-sec { background: var(--paper-2); }
.how { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 3vw, 40px); counter-reset: how; }
.how li { position: relative; padding-top: 30px; border-top: 1px solid var(--ink); }
.how li::before { counter-increment: how; content: "0" counter(how); position: absolute; top: -12px; left: 0; background: var(--paper-2); padding-right: 12px; font: 500 12px/24px var(--mono); }
.how__k { margin-bottom: 12px; color: var(--accent); }
.how h3 { font: 400 28px/1.1 var(--serif); margin-bottom: 12px; }
.how p:last-child { color: var(--ink-2); font-size: 15.5px; }

/* faq */
.faq { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.faq__list { border-top: 1px solid var(--ink); }
.qa { border-bottom: 1px solid var(--line); }
.qa summary { list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 22px 0; cursor: pointer; font-size: 17px; font-weight: 500; }
.qa summary::-webkit-details-marker { display: none; }
.qa summary:hover { color: var(--accent); }
.qa i { position: relative; flex: none; width: 14px; height: 14px; }
.qa i::before, .qa i::after { content: ""; position: absolute; left: 0; top: 6.25px; width: 14px; height: 1.5px; background: currentColor; transition: transform .45s var(--ease); }
.qa i::after { transform: rotate(90deg); }
.qa[open] i::after { transform: rotate(0); }
.qa__a { padding: 0 48px 24px 0; color: var(--ink-2); }

/* close */
.close { background: var(--ink); color: var(--paper); padding: clamp(64px, 8vw, 112px) 0; }
.close__in { display: flex; justify-content: space-between; align-items: end; gap: 32px; flex-wrap: wrap; }
.close h2 { margin-top: 14px; font: 400 clamp(36px, 4.8vw, 64px)/1.02 var(--serif); letter-spacing: -.02em; max-width: 16ch; }
.close .mono-label { color: #9aa0a8; }

/* sticky bar (mobile) */
.sticky { position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 60; transform: translateY(140%); transition: transform .6s var(--ease); display: none; }
.sticky.is-on { transform: translateY(0); }
.sticky__in { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 10px 10px 18px; border-radius: 999px; background: rgba(251, 250, 246, .92); backdrop-filter: blur(12px); border: 1px solid var(--line); box-shadow: 0 20px 40px -20px rgba(16, 18, 21, .45); }
.sticky__in strong { display: block; font-size: 14.5px; }
.sticky__in span { font: 12px/1 var(--mono); color: var(--mute); }

/* ---------------------------------------------------------------- footer */
.ftr { background: var(--paper-2); border-top: 1px solid var(--line); padding: 56px 0 32px; font-size: 14.5px; }
.ftr__ruo { padding: 18px 20px; margin-bottom: 40px; border: 1px solid var(--ink); border-left-width: 4px; border-radius: 10px; background: var(--paper); color: var(--ink-2); }
.ftr__ruo p { margin: 0; }
.ftr__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.ftr nav { display: grid; align-content: start; gap: 10px; }
.ftr nav .mono-label { margin-bottom: 6px; }
.ftr nav a { text-decoration: none; color: var(--ink-2); }
.ftr nav a:hover { color: var(--accent); }
.brand--ftr .brand__name { font-size: 30px; }
.ftr address { font-style: normal; margin-top: 16px; line-height: 1.7; color: var(--ink-2); }
.ftr__hours { margin-top: 10px; color: var(--mute); font-size: 13.5px; }
.ftr__base { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--mute); }

/* ---------------------------------------------------------------- doc pages */
.doc { padding: clamp(48px, 7vw, 96px) 0 clamp(72px, 9vw, 120px); }
.doc__in { max-width: 860px; }
.doc__head { padding-bottom: 32px; margin-bottom: 40px; border-bottom: 1px solid var(--ink); }
.doc__head h1 { margin: 14px 0 0; font: 400 clamp(44px, 6vw, 76px)/1 var(--serif); letter-spacing: -.02em; }
.doc__lede { margin-top: 18px; font-size: 18px; color: var(--ink-2); max-width: 60ch; }
.prose { max-width: 68ch; }
.prose h2 { font: 400 28px/1.15 var(--serif); margin: 44px 0 12px; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--ink-2); }
.prose p + p { margin-top: 12px; }
.prose ul { padding-left: 20px; display: grid; gap: 8px; margin: 12px 0 0; }
.facts { width: 100%; border-collapse: collapse; margin-bottom: 20px; }
.facts th, .facts td { text-align: left; vertical-align: top; padding: 14px 0; border-bottom: 1px solid var(--line); }
.facts th { width: 34%; font-weight: 500; padding-right: 16px; }
.facts td { color: var(--ink-2); }
.faq__list--page { max-width: 760px; }

.coa { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: clamp(22px, 3vw, 36px); margin-bottom: 56px; box-shadow: 0 40px 80px -60px rgba(16, 18, 21, .45); }
.coa__head { display: flex; justify-content: space-between; align-items: start; gap: 16px; padding-bottom: 20px; border-bottom: 2px solid var(--ink); }
.coa__lot { font: 400 clamp(36px, 5vw, 56px)/1 var(--serif); margin-top: 8px; }
.coa__status { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; padding: 8px 12px; border-radius: 99px; border: 1px solid var(--line); }
.coa__grid { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; }
.coa__grid div { padding: 18px 16px 18px 0; border-bottom: 1px solid var(--line); }
.coa__grid dt { font: 10.5px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--mute); }
.coa__grid dd { margin: 8px 0 0; font-weight: 500; }
.coa__grid .coa__big { grid-column: span 1; }
.coa__grid .coa__big dd { font: 400 40px/1 var(--serif); font-variant-numeric: tabular-nums; }
.coa__note { margin-top: 18px; font-size: 13.5px; color: var(--mute); }
.coa__actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }

.contact { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 48px; }
.contact__card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; }
.contact__card address { font-style: normal; margin-top: 10px; line-height: 1.7; color: var(--ink-2); }
.contact__big { font: 400 26px/1.15 var(--serif); margin: 10px 0 8px; word-break: break-word; }
.contact__big a { text-decoration: none; }
.contact__card p:last-child:not(.contact__big) { font-size: 14px; color: var(--mute); }

/* preview-only cart */
.pv-cart { max-width: 640px; }
.pv-cart .facts td:last-child { text-align: right; font-family: var(--mono); }
.pv-flag { margin-bottom: 24px; padding: 12px 16px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); font: 13px/1.4 var(--mono); }

/* WooCommerce pages rendered inside the theme */
.woo-page .woocommerce { font-size: 15px; }
.woo-page .woocommerce .button, .woo-page .woocommerce button.button { background: var(--ink); color: var(--paper); border-radius: 999px; padding: 14px 22px; font-weight: 500; }

/* ---------------------------------------------------------------- vial label text */
.vl { font-family: var(--sans); fill: #101215; }
.vl--brand { font: 600 10px var(--mono); letter-spacing: .14em; }
.vl--name { font: 400 46px var(--serif); letter-spacing: -.01em; }
.vl--amt { font-weight: 600; font-size: 14px; }
.vl--sub { font-size: 8.4px; fill: #3a3f47; }
.vl--meta { font: 500 8.5px var(--mono); letter-spacing: .06em; fill: #3a3f47; }
.vl--fine { font-size: 7.6px; fill: #3a3f47; }

/* ---------------------------------------------------------------- reveal */
.js [data-reveal] { opacity: 0; transform: translateY(24px); filter: blur(6px); transition: opacity .9s var(--ease), transform .9s var(--ease), filter .9s var(--ease); transition-delay: var(--d, 0ms); }
.js [data-reveal].is-in { opacity: 1; transform: none; filter: none; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1080px) {
  .nav { display: none; }
  .mnav { display: block; }
  .band__in { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 900px) {
  .buy__grid, .anatomy, .spec, .so, .faq { grid-template-columns: 1fr; }
  .stage { position: relative; top: 0; aspect-ratio: 1 / .92; }
  .stage__vial { width: 36%; }
  .steps, .how { grid-template-columns: 1fr; }
  .steps li, .steps li + li { padding: 24px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .steps__n { font-size: 48px; margin-bottom: 10px; }
  .how { gap: 40px; }
  .ftr__grid { grid-template-columns: 1fr 1fr; }
  .ftr__biz { grid-column: 1 / -1; }
  .ftr__ruo { grid-template-columns: 1fr; gap: 8px; }
  .contact { grid-template-columns: 1fr; }
  .coa__grid { grid-template-columns: 1fr 1fr; }
  .sticky { display: block; }
  .anatomy__vial { width: 46%; }
}
@media (max-width: 560px) {
  .hide-sm { display: none !important; }
  .topbar__in { gap: 10px; font-size: 11px; }
  .hdr__in { min-height: 60px; }
  .brand__name { font-size: 23px; }
  .stage { aspect-ratio: auto; height: 300px; border-radius: 18px; }
  .stage__vial { width: 30%; }
  .stage__notes, .stage__cap { display: none; }
  .topbar .topbar__sep { display: none; }
  .topbar__in > span:nth-child(3) { display: none; }
  .keyspec { grid-template-columns: repeat(2, 1fr); }
  .keyspec div:nth-child(3) { border-left: 0; padding-left: 0; }
  .keyspec div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .plan__opts { grid-template-columns: 1fr; }
  .pack { padding: 14px; column-gap: 12px; }
  .pack__tag { display: none; }
  .band__nums { grid-template-columns: 1fr 1fr 1fr; }
  .band__nums div { padding-left: 12px; }
  .band__nums div:first-child { padding-left: 0; border-left: 0; }
  .so__table { padding: 6px 16px 18px; }
  .qa__a { padding-right: 0; }
  .close__in .btn { width: 100%; }
  .coa__grid { grid-template-columns: 1fr; }
  .facts th { width: 40%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js [data-reveal] { opacity: 1; transform: none; filter: none; }
}

/* ---------------------------------------------------------------- print: spec sheet only */
@media print {
  body.print-spec > *:not(main) { display: none !important; }
  body.print-spec main > *:not(.spec-sec) { display: none !important; }
  body.print-spec .spec-sec { padding: 0; border: 0; background: #fff; }
  body.print-spec .sec__head .btn { display: none; }
  body.print-spec .spec { grid-template-columns: 1fr; }
  body.print-spec .spec__sheet { box-shadow: none; }
  .hdr, .topbar, .sticky { display: none !important; }
}

/* stale batch report */
.coa__status--old .dot { background: #b7791f; box-shadow: 0 0 0 4px rgba(183, 121, 31, .16); }
.coa__stale { margin-top: 18px; padding: 12px 16px; border-radius: 10px; background: rgba(183, 121, 31, .1); color: #7a4f12; font-size: 14px; }

.ruo-box { margin: -4px 0 16px; padding: 12px 14px; border: 1px solid var(--ink); border-left-width: 4px; border-radius: 10px; background: var(--card, #fff); font-size: 13.5px; line-height: 1.45; color: var(--ink-2); }
.ruo-box p { margin: 0; }
.ruo-box__h, .ftr__ruo-h { font: 600 12px/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink); margin: 0 0 6px !important; }
.title__ruo { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; }
.title__ruo span { font: 600 11px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink); border: 1px solid var(--ink); border-radius: 99px; padding: 6px 9px; }
/* 18+ / research-use gate. Hidden unless the head script found no saved answer. */
.agegate { display: none; }
html.age-pending { overflow: hidden; }
.age-pending .agegate { display: grid; place-items: center; position: fixed; inset: 0; z-index: 300; padding: 16px; background: rgba(16, 18, 21, .74); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.agegate__card { width: 100%; max-width: 480px; max-height: calc(100dvh - 32px); overflow-y: auto; background: var(--paper); color: var(--ink); border-radius: var(--r); padding: 28px; box-shadow: 0 30px 80px -30px rgba(0, 0, 0, .6); }
.agegate h2 { margin: 10px 0 14px; font: 400 clamp(34px, 7vw, 46px)/1.02 var(--serif); letter-spacing: -.02em; }
.agegate #agegate-d p { margin: 0 0 12px; font-size: 15.5px; color: var(--ink-2); }
.agegate .agegate__ruo { padding: 12px 14px; border-left: 4px solid var(--ink); background: var(--paper-2); border-radius: 8px; font-size: 14.5px; }
.agegate__ruo strong { color: var(--ink); }
.agegate__btns { display: grid; gap: 10px; margin-top: 18px; }
.agegate__btns .btn { width: 100%; min-height: 52px; white-space: normal; text-align: center; justify-content: center; line-height: 1.25; padding: 10px 18px; }
.agegate__fine { margin: 14px 0 0; font-size: 12.5px; color: var(--mute); }
@media (max-width: 560px) { .agegate__card { padding: 22px 18px; } }
.lookup { margin: 0 0 56px; padding: 22px; border: 1px solid var(--line); border-radius: var(--r); background: var(--card); }
.lookup__row { display: flex; gap: 10px; margin-top: 10px; }
.lookup input { flex: 1; min-width: 0; min-height: 46px; padding: 0 14px; border: 1px solid var(--line-2); border-radius: 999px; background: var(--paper); font-family: var(--mono); }
.lookup__out { margin-top: 12px; font-size: 14px; }
.lookup__out.is-hit { color: var(--ok); }
.lookup__out.is-miss { color: #7a4f12; }

/* product photo stage (RL photo has a near-black background) */
.stage--photo { background: radial-gradient(90% 70% at 50% 45%, #232323 0%, #171717 60%, #121212 100%); border-color: #000; }
.stage--photo .stage__grid { background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); opacity: 1; }
.stage__photo { position: absolute; left: 50%; top: 50%; height: 88%; width: auto; max-width: none; transform: translate(-50%, -50%); }
.stage--photo .stage__notes li { background: rgba(23, 23, 23, .72); border-color: rgba(255,255,255,.12); color: #ecebe6; }
.stage--photo .stage__notes .mono-label, .stage--photo .stage__cap { color: #9a9a9a; }
.anatomy__vial--photo { max-width: 360px; width: 100%; border-radius: 18px; overflow: hidden; background: #171717; }
.anatomy__vial--photo img { width: 100%; height: auto; }
@media (max-width: 560px) { .stage__photo { height: 96%; } }

/* ---------------------------------------------------------------- 29 Oct pass: tap targets (44px), iOS zoom, drawn vial */
.cart-link, .mnav summary { width: 44px; height: 44px; }
.interval select { font-size: 16px; }
.stage .stage__vial .vial { width: 100%; height: auto; }
.anatomy__vial .vial { width: 100%; height: auto; }
@media (max-width: 900px) {
  .btn--sm { min-height: 44px; }
  .ftr nav { gap: 0; }
  .ftr nav a { display: flex; align-items: center; min-height: 44px; }
  .ftr address a, .contact__card a { display: inline-block; padding: 10px 0; }
}

/* footer email capture (only rendered when config email_capture.action is set) */
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.ftr__news { display: grid; grid-template-columns: 1fr 1.2fr; gap: 24px; align-items: start; padding-bottom: 36px; margin-bottom: 40px; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.ftr__news-f { display: flex; flex-wrap: wrap; gap: 10px; }
.ftr__news-f input[type=email] { flex: 1 1 220px; min-height: 46px; padding: 0 16px; border: 1px solid var(--line-2); border-radius: 999px; background: var(--card); font-size: 16px; }
.ftr__news-ok { flex-basis: 100%; display: flex; gap: 10px; align-items: start; font-size: 13.5px; cursor: pointer; }
.ftr__news-ok input { width: 18px; height: 18px; margin: 1px 0 0; accent-color: var(--ink); }
@media (max-width: 900px) { .ftr__news { grid-template-columns: 1fr; } }

/* ---------------------------------------------------------------- 29 Oct polish */
.num { font-family: var(--sans); font-size: .82em; font-weight: 400; letter-spacing: -.03em; font-variant-numeric: lining-nums; }
.title__from { display: none; font: 500 15px/1.3 var(--mono); font-variant-numeric: tabular-nums; margin: -6px 0 14px; }
.coa__lot { white-space: nowrap; }
.stage__notes li { max-width: 22%; }
/* desktop: pull add-to-cart into the 900px fold */
@media (min-width: 901px) {
  .buy { padding-top: 20px; }
  .title { margin: 10px 0 12px; }
  .title__main { font-size: clamp(56px, 6.2vw, 88px); }
  .lede { font-size: 16px; }
  .keyspec { margin: 18px 0 20px; }
  .keyspec div { padding-top: 10px; padding-bottom: 10px; }
  .order fieldset { margin-bottom: 12px; }
  .plan__opt { padding: 10px 14px; }
  .pack { padding-top: 10px; padding-bottom: 10px; }
  .ack { margin: 2px 0 10px; }
}
/* mobile: price inside the first screen */
@media (max-width: 560px) {
  .title__from { display: block; }
  .stage { height: 210px; }
  .buy { padding-top: 14px; }
  .title { margin: 12px 0 10px; }
  .title__main { font-size: 52px; }
  .title__rest { margin-top: 8px; }
  .lede { font-size: 15.5px; }
  .eyebrow { font-size: 12.5px; }
}
@media (min-width: 901px) {
  .panel { display: flex; flex-direction: column; }
  .panel > .keyspec { order: 1; margin: 22px 0 0; }
  .panel > .assure { order: 2; }
  .panel > .order { margin-top: 18px; }
  .plan__d { font-size: 12.5px; }
}
@media (min-width: 901px) {
  .buy { padding-top: 12px; }
  .title__main { font-size: clamp(56px, 5.6vw, 80px); }
  .order legend { margin-bottom: 6px; }
  .packs { gap: 8px; }
}