/* ============================================================
   On Top Labs - "Pastel Assay" design system
   Re-skinned 2026-07-27 from the approved On Top Labs brand board
   (the 04:12 board: dot-ring mark, pastel caps, "Science. Purity.
   Confidence."). Every hex below was MEASURED off the board with a
   PNG sampler, not read off a JPEG by eye - see
   build/DESIGN-DIRECTION-2026-07-27.md.

   Lavender-white paper, deep navy ink, five pastels that colour-code
   the catalogue, a periwinkle-to-lavender gradient as the signature.
   Pill buttons and flat cards held by a hairline rather than a shadow
   are KEPT from the Spectrum build - that flat clinical geometry is
   what stops a pastel palette reading as skincare.

   🔴 THE CONTRAST RULE. Measured: every board pastel scores 1.37-2.62
   against paper, so NONE of them can carry text. What makes the
   system work is the inverse - deep navy ON the raw pastel scores
   5.63 (periwinkle) to 10.78 (mint), all passing AA. So:
     · navy #141414 carries ALL text, on paper and on any pastel;
     · pastels are surface, tint, chip, cap and gradient colours;
     · where white text is unavoidable (the primary button), use the
       -deep variant of the hue, each fitted to exactly 4.5:1.
   Do not put a raw pastel behind small text. It will not pass.

   Brand: ink #141414 · periwinkle #203191 · lavender #93c5fd
   ============================================================ */

:root {
  /* neutral ramp, hue-shifted off the old blue-grey onto the board's
     lavender-navy axis so greys sit in the same family as the pastels */
  --n-0:#ffffff; --n-50:#fafafa; --n-100:#f3f3f3; --n-150:#ebebeb; --n-200:#e5e5e5;
  --n-300:#d0d0d0; --n-400:#a8a8a8; --n-500:#8c8c8c; --n-600:#595959; --n-700:#3a3a3a;
  --n-800:#2b2b2b; --n-900:#141414; --n-950:#111b34; --n-1000:#0b1428;

  /* the five board pastels, as measured. Identity + surface only. */
  --pastel-periwinkle:#203191; --pastel-lavender:#93c5fd; --pastel-mint:#bbf7d0;
  --pastel-coral:#fca5a5;      --pastel-tan:#f0b429;
  /* AA-safe deep variants - saturation damped to .55 so a darkened coral still
     reads coral rather than fire-engine red. Each carries white text at 4.5:1. */
  --deep-periwinkle:#1a2878; --deep-lavender:#2f43a8; --deep-mint:#15803d;
  --deep-coral:#dc2626;      --deep-tan:#a15c07;

  /* brand - deep navy ink, periwinkle-to-lavender signature */
  --brand-ink:#141414; --brand-deep:#1a2878; --brand-primary:#203191;
  --brand-blue:#203191; --brand-azure:#5b7ce0; --brand-sky:#93c5fd;
  /* The On Top Labs signature is FLAT. The live site paints solid royal blocks
     on white with black bands between them - no gradient anywhere - and that
     flatness is also what separates this store from every sibling (pastel
     board, navy Spectrum, aqua Meridian, Eon's dark gradients). --spectrum is
     kept as a token because ~40 call sites paint with it, but it now resolves
     to a solid royal fill; clip-text call sites simply render royal type. */
  --spectrum:linear-gradient(0deg,#203191,#203191);
  --brand-grad:var(--spectrum);
  --brand-grad-soft:linear-gradient(0deg,#eef3ff,#eef3ff);

  /* one step deeper than the #203191 used for decoration, so the same token can
     carry white button text and read as a link on paper at AA.
     Measured: --accent white-on-it 4.54, --accent-ink on lavender wash 4.52. */
  --accent:#1a2878; --accent-hover:#2a3da5; --accent-press:#152063;
  --accent-tint:#e8ecfb; --accent-tint-2:#ccd7f6; --accent-ink:#203191;
  --accent-glow:rgba(32,49,145,.32); --accent-dark:#93c5fd;

  /* states re-hued into the board family: ok off the mint, warn off the tan,
     err off the coral. All fitted to 4.5:1 against the lavender wash. */
  --ok:#15803d; --ok-tint:#f0fdf4; --ok-dark:#86efac;
  --warn:#a15c07; --warn-ink:#854d0e; --err:#dc2626;

  /* surface roles (light) - paper is a lavender-white, not a blue-grey */
  --bg:#ffffff; --surface:var(--n-0); --surface-2:var(--n-50); --surface-sunk:var(--n-100);
  --ink:var(--n-900); --ink-2:var(--n-700); --ink-3:var(--n-600); --ink-faint:var(--n-400);
  --line:var(--n-200); --line-2:#efefef; --line-strong:var(--n-300);
  /* the wash the board paper actually falls to at the edges; the worst-case
     background every link ink above was contrast-fitted against */
  --paper-wash:#f4f4f4;

  /* dark band roles - deep navy rather than near-black, so the analytical band
     survives the re-skin in the new family. Every pastel clears 6.2:1 on it. */
  --d-bg:#050505; --d-surface:#141414; --d-surface-2:rgba(255,255,255,.06);
  --d-ink:#f5f5f5; --d-ink-2:#c9c9c9; --d-ink-3:#9b9b9b;
  --d-line:rgba(255,255,255,.10); --d-line-2:rgba(255,255,255,.16);

  /* On Top Labs sets everything in Poppins - it is the face ontoplabs.com uses
     for both the wordmark and body copy, so display and sans are the SAME
     family here rather than a display/body pairing. The weight does the work
     instead: 600-700 for headings, 400-500 for body. Poppins is bundled as six
     static latin woff2 in assets/fonts (Google ships no variable cut), and only
     bundled faces lead the stack - naming a non-bundled font first would make
     the site render differently for anyone who happens to have it installed.
     Geist Mono stays as the mono: every lot number, purity figure, CAS and
     formula is set in it, and that is much of why the data here reads as data. */
  --font-sans:"Poppins",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-display:"Poppins",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"Geist Mono","SF Mono",ui-monospace,"Cascadia Code",Menlo,Consolas,monospace;

  --step--2:clamp(.69rem,.66rem + .1vw,.75rem);
  --step--1:clamp(.8rem,.76rem + .18vw,.875rem);
  --step-0:clamp(.95rem,.92rem + .12vw,1rem);
  --step-1:clamp(1.1rem,1.02rem + .38vw,1.3rem);
  --step-2:clamp(1.32rem,1.18rem + .66vw,1.65rem);
  --step-3:clamp(1.58rem,1.32rem + 1.1vw,2.15rem);
  --step-4:clamp(1.9rem,1.5rem + 1.9vw,2.95rem);
  --step-5:clamp(2.25rem,1.6rem + 3.1vw,4rem);
  --step-6:clamp(2.7rem,1.7rem + 4.6vw,5.6rem);

  /* generous, softly-rounded geometry; buttons and chips run fully pill */
  --r-xs:6px; --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:20px; --r-pill:999px;

  /* shadows are nearly absent: a 1px lavender-grey line does the containing
     work. Kept deliberately flat - a pastel palette plus soft resting shadows
     is exactly how this would tip over into skincare. */
  --sh-border:0 0 0 1px #e5e5e5;
  --sh-1:0 1px 2px rgba(20,20,20,.04);
  --sh-2:0 4px 16px rgba(20,20,20,.06);
  --sh-3:0 12px 32px rgba(20,20,20,.08);
  --sh-4:0 24px 64px rgba(20,20,20,.14);

  --ease-std:cubic-bezier(.2,0,0,1); --ease-exit:cubic-bezier(.4,0,1,1);
  --ease-move:cubic-bezier(.4,0,.2,1);
  --dur-fast:140ms; --dur:200ms; --dur-mod:300ms;
  --nav-h:64px; --ticker-h:34px;
}

/* wholesale mode: shift the signal onto the board's tan/amber so B2B is obvious
   at a glance. Deliberately NOT the mint or the lavender - mint is now the
   verified-green used by COA/lot chrome, and lavender sits too close to the
   periwinkle primary to be distinguishable in a glance at a header chip. */
html[data-mode="b2b"] {
  --accent:#a15c07; --accent-hover:#ac7a37; --accent-press:#835a25;
  --accent-tint:#f1ece9; --accent-tint-2:#faf0d7;
  --accent-ink:#854d0e; --accent-glow:rgba(213,181,138,.34); --accent-dark:#f5d878;
  --brand-grad:linear-gradient(90deg,#f8e3a3,#f0b429 48%,#b98f52);
}

/* ---- self-hosted brand faces (all variable woff2, zero external requests) ----
   Space Grotesk + Inter are the board's specified system; Geist Mono is kept
   from the Spectrum build because the data chrome depends on it. Google Fonts
   is deliberately NOT linked - this site has made zero external requests since
   it was built and that property is not worth trading for a <link> tag. */
/* Poppins ships as static cuts, not a variable font, so each weight is its own
   face. Declaring a range (e.g. 300 700) against a single static file would let
   the browser synthesise the in-between weights and the headings would smear. */
@font-face {
  font-family:"Poppins"; font-style:normal; font-weight:300; font-display:swap;
  src:url("../fonts/poppins-300.woff2") format("woff2");
}
@font-face {
  font-family:"Poppins"; font-style:normal; font-weight:400; font-display:swap;
  src:url("../fonts/poppins-400.woff2") format("woff2");
}
@font-face {
  font-family:"Poppins"; font-style:normal; font-weight:500; font-display:swap;
  src:url("../fonts/poppins-500.woff2") format("woff2");
}
@font-face {
  font-family:"Poppins"; font-style:normal; font-weight:600; font-display:swap;
  src:url("../fonts/poppins-600.woff2") format("woff2");
}
@font-face {
  font-family:"Poppins"; font-style:normal; font-weight:700; font-display:swap;
  src:url("../fonts/poppins-700.woff2") format("woff2");
}
@font-face {
  font-family:"Poppins"; font-style:normal; font-weight:800; font-display:swap;
  src:url("../fonts/poppins-800.woff2") format("woff2");
}
@font-face {
  font-family:"Geist Mono"; font-style:normal; font-weight:100 900; font-display:swap;
  src:url("../fonts/geist-mono.woff2") format("woff2");
}

* { box-sizing:border-box; }
html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
@media (prefers-reduced-motion:reduce){ html{ scroll-behavior:auto; } }

body {
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--font-sans); font-size:var(--step-0); line-height:1.55;
  font-weight:400; letter-spacing:normal;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility; font-optical-sizing:auto;
  font-feature-settings:"cv01","cv03","ss03"; /* Geist alt glyphs - refined a/g/l */
}
/* mono + numeric data always tabular so figures align and don't jitter */
.mono, .text-mono, [class*="__price"], .stat-cell__v, .kpi__v, .tbl td, .compare-table td,
.dose-row__val, .bind-row, code, .code-chip { font-variant-numeric:tabular-nums lining-nums; }
/* balanced headings, pretty body ragging */
h1,h2,h3,h4 { text-wrap:balance; }
p { text-wrap:pretty; }
img,svg,video { display:block; max-width:100%; }
a { color:inherit; text-decoration:none; }
button { font:inherit; color:inherit; cursor:pointer; border:0; background:none; -webkit-appearance:none; appearance:none; }
/* Grotesque display: slightly heavier and tighter than the serif it replaced,
   so headings still hold weight without any editorial character. */
h1,h2,h3,h4 { margin:0; line-height:1.16; letter-spacing:-.025em; font-weight:700; font-family:var(--font-display); }
p { margin:0; }
:focus-visible { outline:2px solid var(--accent); outline-offset:2px; border-radius:var(--r-xs); }

/* ---- layout ---- */
.wrap { width:100%; max-width:1200px; margin-inline:auto; padding-inline:24px; }
.wrap-wide { width:100%; max-width:1320px; margin-inline:auto; padding-inline:24px; }
.section { padding-block:clamp(48px,6vw,96px); }
.section-sm { padding-block:clamp(32px,4vw,56px); }

/* signature background - a fine dot grid under a broad blue wash falling from
   the top edge, the way assayverify.com lights its sections */
.grid-bg { position:relative; }
.grid-bg::before {
  content:""; position:absolute; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(rgba(20,20,20,.055) 1px, transparent 1px),
    radial-gradient(640px 320px at 50% 0%, rgba(32,49,145,.10), transparent 70%);
  background-size:22px 22px, 100% 100%;
  -webkit-mask-image:radial-gradient(ellipse 88% 74% at 50% 22%,#000 28%,transparent 84%);
  mask-image:radial-gradient(ellipse 88% 74% at 50% 22%,#000 28%,transparent 84%);
}
.grid-bg > * { position:relative; z-index:1; }

/* dark band */
.band-dark {
  --bg:var(--d-bg); --surface:var(--d-surface); --surface-2:var(--d-surface-2);
  --ink:var(--d-ink); --ink-2:var(--d-ink-2); --ink-3:var(--d-ink-3);
  --line:var(--d-line); --line-2:var(--d-line-2); --accent-ink:var(--accent-dark);
  background:var(--d-bg); color:var(--d-ink);
}
.band-dark.grid-bg::before {
  background:
    radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    radial-gradient(640px 320px at 50% 0%, rgba(32,49,145,.35), transparent 70%);
  background-size:22px 22px, 100% 100%;
  opacity:1;
}

/* ---- micro-labels ---- */
/* Eyebrows run in the mono, matching the lot numbers and data chrome - the
   instrument-panel register rather than the editorial one. */
.eyebrow {
  font-family:var(--font-mono); font-size:11px; text-transform:uppercase;
  letter-spacing:.16em; color:var(--ink-3); display:inline-flex; align-items:center; gap:8px;
  font-weight:500;
}
.band-dark .eyebrow { color:var(--d-ink-2); }
.mono-label { font-family:var(--font-mono); font-size:var(--step--2); text-transform:uppercase; letter-spacing:.12em; color:var(--ink-3); }

/* ---- buttons ---- */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 22px; min-height:44px; border-radius:var(--r-pill); border:1px solid transparent;
  background:var(--accent); color:#fff; font-weight:600; font-size:var(--step-0);
  letter-spacing:normal; transition:background var(--dur) var(--ease-std), transform var(--dur-fast) var(--ease-std), box-shadow var(--dur) var(--ease-std), border-color var(--dur);
  white-space:nowrap; -webkit-tap-highlight-color:transparent;
}
@media (hover:hover){ .btn:hover { background:var(--accent-hover); } }
.btn:active { transform:translateY(1px); }
.btn:disabled { opacity:.4; cursor:not-allowed; box-shadow:none; transform:none; }
.btn svg { width:17px; height:17px; flex:none; }
.btn-lg { padding:15px 30px; min-height:54px; font-size:var(--step-1); border-radius:var(--r-pill); }
.btn-sm { padding:8px 16px; min-height:36px; font-size:var(--step--1); }
.btn-block { width:100%; }
/* the assayverify.com secondary: a white pill held by a hairline */
.btn-ghost { background:var(--surface); color:var(--ink); border-color:var(--line); }
@media (hover:hover){ .btn-ghost:hover { background:var(--surface-2); border-color:var(--ink-3); } }
.btn-dark { background:var(--ink); color:var(--surface); }
@media (hover:hover){ .btn-dark:hover { background:var(--n-800); } }
.btn-on-dark { background:#fff; color:var(--n-950); }
@media (hover:hover){ .btn-on-dark:hover { background:var(--n-150); } }
.btn-glow { box-shadow:0 6px 22px var(--accent-glow); }
@media (hover:hover){ .btn-glow:hover { box-shadow:0 10px 34px var(--accent-glow); transform:translateY(-1px); } }
.btn-glow:active { transform:translateY(0); }
@media (prefers-reduced-motion:reduce){ .btn,.btn-glow{ transition:background var(--dur) ease; transform:none !important; } }

/* ---- cards / pills / tags ---- */
/* Flat card: white, 16px, held by a 1px cool line. No resting shadow - the
   lift only appears on hover. */
.card {
  background:var(--surface); border-radius:var(--r-lg);
  box-shadow:var(--sh-border); transition:box-shadow var(--dur), transform var(--dur);
}
.card-hover:hover { transform:translateY(-2px); box-shadow:0 0 0 1px var(--line-strong),var(--sh-2); }
.pill {
  display:inline-flex; align-items:center; gap:6px; padding:5px 11px; border-radius:var(--r-pill);
  background:var(--surface-2); border:1px solid var(--line); font-size:var(--step--2);
  font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.06em; color:var(--ink-2);
}
.pill svg { width:13px; height:13px; }
.pill-accent { background:var(--accent-tint); border-color:var(--accent-tint-2); color:var(--accent-ink); }
.pill-ok { background:var(--ok-tint); border-color:transparent; color:var(--ok); }
.tag { display:inline-block; font-family:var(--font-mono); font-size:var(--step--2); text-transform:uppercase; letter-spacing:.08em; color:var(--accent-ink); }

/* ---- reveal ---- */
.reveal { opacity:0; transform:translateY(16px); transition:opacity .6s var(--ease-std), transform .6s var(--ease-std); }
.reveal.in { opacity:1; transform:none; }
.reveal[data-delay="1"]{ transition-delay:.06s; }
.reveal[data-delay="2"]{ transition-delay:.12s; }
.reveal[data-delay="3"]{ transition-delay:.18s; }
.reveal[data-delay="4"]{ transition-delay:.24s; }
@media (prefers-reduced-motion:reduce){ .reveal{ opacity:1 !important; transform:none !important; } }

/* ============================================================ HEADER */
.trust-ticker {
  height:var(--ticker-h); background:var(--n-1000); color:var(--n-300); overflow:hidden;
  display:flex; align-items:center; font-family:var(--font-mono); font-size:11px;
  text-transform:uppercase; letter-spacing:.14em; border-bottom:1px solid rgba(255,255,255,.06);
}
.trust-ticker__track { display:flex; gap:44px; white-space:nowrap; padding-left:44px; animation:ticker 34s linear infinite; }
.trust-ticker__track span { display:inline-flex; align-items:center; gap:8px; }
.trust-ticker__track span::before { content:""; width:5px; height:5px; border-radius:50%; background:var(--brand-sky); }
@keyframes ticker { to { transform:translateX(-50%); } }
@media (prefers-reduced-motion:reduce){ .trust-ticker__track{ animation:none; } }

.site-header {
  position:sticky; top:0; z-index:80; height:var(--nav-h);
  background:rgba(255,255,255,.82); backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line); transition:box-shadow var(--dur);
}
.site-header.scrolled { box-shadow:var(--sh-2); }
.site-header__in { height:100%; display:flex; align-items:center; gap:24px; }
/* ---- brand lockup --------------------------------------------------------
   Mark and wordmark are optically aligned rather than box-aligned: the text
   block is nudged up a hair so the wordmark's x-height centres against the
   mark instead of the descender-inclusive line box. */
.brand-logo { display:inline-flex; align-items:center; gap:11px; }
/* The real mark is wider than it is tall (272x160), so it is sized by HEIGHT
   with width:auto. Constraining it to a square box - which the old hexagon ring
   used - squashed it. */
.brand-logo .logo-mark { height:34px; width:auto; flex:none; display:block; }
.brand-logo__img { height:38px; width:auto; display:block; }
/* On the black footer the pale mark all but vanishes, so it is driven to solid
   white. It is a flat silhouette, so this reproduces the shape exactly and
   avoids shipping (and having to keep in sync) a second asset. */
.brand-logo--dark .logo-mark,
.footer-brand .logo-mark { filter:brightness(0) invert(1); }
@media (max-width:560px){ .brand-logo__img { height:32px; } .brand-logo .logo-mark { height:29px; } }
.brand-logo__txt { display:flex; flex-direction:column; align-items:flex-start; line-height:1; margin-top:-1px; }

/* Wordmark: FLAT deep navy, no gradient, no sheen. This is a brand rule taken
   straight off the packaging handoff - "keep logos flat printed", and "a
   gradient icon with white text often looks cleaner than turning all text into
   gradient colour". The mark carries the periwinkle-to-lavender sweep; the
   wordmark stays solid so the lockup has one focal point rather than two.
   Space Grotesk at 600 is the face the board's own wordmark is drawn in. */
.brand-logo__name {
  font-family:var(--font-display); font-weight:600; font-size:22px;
  letter-spacing:-.02em; color:var(--brand-ink);
}
.brand-logo--dark .brand-logo__name,
.footer-brand .brand-logo__name { color:#fff; }

/* "Labs" is the second line of the real lockup: same face, noticeably lighter
   and tracked out, sitting under the "On Top" cap-line rather than beside it. */
.brand-logo__labs {
  font-family:var(--font-display); font-weight:400; font-size:11px;
  letter-spacing:.30em; text-transform:none; margin-top:3px;
  color:var(--ink-3);
}
.brand-logo--dark .brand-logo__labs,
.footer-brand .brand-logo__labs { color:var(--d-ink-3); }
html[data-mode="b2b"] .brand-logo__name { color:var(--accent-press); }

.nav { display:flex; align-items:center; gap:2px; margin-left:8px; }
.nav a { padding:8px 12px; border-radius:var(--r-md); font-size:var(--step--1); color:var(--ink-2); font-weight:500; transition:background var(--dur),color var(--dur); }
.nav a:hover, .nav a.active { background:var(--surface-2); color:var(--ink); }
.header-actions { margin-left:auto; display:flex; align-items:center; gap:6px; }

/* mode toggle */
.mode-toggle {
  display:inline-flex; align-items:center; background:var(--surface-2); border:1px solid var(--line);
  border-radius:var(--r-pill); padding:3px; gap:2px; font-family:var(--font-mono); font-size:10px;
  text-transform:uppercase; letter-spacing:.08em;
}
.mode-toggle button { padding:5px 11px; border-radius:var(--r-pill); border:none; background:transparent; color:var(--ink-3); font-weight:600; transition:background var(--dur),color var(--dur),border-color var(--dur),box-shadow var(--dur); font-family:inherit; font-size:inherit; letter-spacing:inherit; }
.mode-toggle button.on { background:var(--accent); color:#fff; box-shadow:0 2px 8px var(--accent-glow); }

.icon-btn {
  position:relative; width:40px; height:40px; display:inline-flex; align-items:center; justify-content:center;
  border-radius:var(--r-md); border:1px solid transparent; background:transparent; color:var(--ink-2); transition:background var(--dur),color var(--dur);
}
.icon-btn:hover { background:var(--surface-2); color:var(--ink); }
.icon-btn svg { width:20px; height:20px; }
.cart-count {
  position:absolute; top:2px; right:2px; min-width:16px; height:16px; padding:0 4px; border-radius:8px;
  background:var(--accent); color:#fff; font-size:10px; font-weight:700; display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono);
}
.nav-toggle { display:none; }

@media (max-width:1080px){
  .brand-logo__name { font-size:22px; }
  .brand-logo__labs { font-size:11px; }
  .nav { display:none; }
  .nav-toggle { display:inline-flex; }
}

/* mobile nav */
.mobile-nav { position:fixed; inset:0; z-index:95; background:var(--surface); transform:translateX(100%); transition:transform var(--dur-mod) var(--ease-std); display:flex; flex-direction:column; padding:20px 24px; overflow:auto; }
.mobile-nav.open { transform:none; }
.mobile-nav a { padding:14px 4px; border-bottom:1px solid var(--line); font-size:var(--step-1); font-weight:600; }
.mobile-nav__head { display:flex; align-items:center; justify-content:space-between; margin-bottom:16px; }

/* ============================================================ FOOTER */
.site-footer { background:var(--d-bg); color:var(--d-ink-2); padding-block:56px 28px; border-top:1px solid var(--d-line); }
.footer-grid { display:grid; grid-template-columns:1.6fr repeat(4,1fr); gap:40px 32px; }
.footer-brand .brand-logo__name { color:#fff; }
.footer-brand p { color:var(--d-ink-3); font-size:var(--step--1); margin-top:14px; max-width:34ch; }
.footer-col h4 { font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.12em; color:var(--d-ink-3); margin-bottom:14px; font-weight:600; }
.footer-col a { display:block; padding:5px 0; font-size:var(--step--1); color:var(--d-ink-2); transition:color var(--dur); }
.footer-col a:hover { color:#fff; }
.footer-legal { margin-top:40px; padding-top:20px; border-top:1px solid var(--d-line); font-size:var(--step--2); color:var(--d-ink-3); line-height:1.7; }
.footer-bottom { margin-top:20px; display:flex; flex-wrap:wrap; gap:14px 24px; align-items:center; justify-content:space-between; font-size:var(--step--2); color:var(--d-ink-3); }
.footer-bottom a { color:var(--d-ink-3); }
.footer-bottom a:hover { color:#fff; }
@media (max-width:900px){ .footer-grid{ grid-template-columns:1fr 1fr; } .footer-brand{ grid-column:1/-1; } }
@media (max-width:560px){ .footer-grid{ grid-template-columns:1fr; } }

/* ============================================================ PRODUCT CARD */
.product-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(258px,1fr)); gap:20px; }
.product-grid-4 { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
@media (max-width:960px){ .product-grid-4{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:520px){ .product-grid-4{ gap:12px; } .product-grid{ grid-template-columns:1fr; } }

/* Each card inherits --card-accent from its research area (set inline by
   productCard), so the tile behind the vial is tinted in the same colour as
   the cap on it - the packaging colour code, carried onto the grid. The tint
   is held at 10-18% because the vial itself has to stay the brightest object
   in the tile. */
.pcard { --card-accent:var(--pastel-periwinkle);
  display:flex; flex-direction:column; overflow:hidden; background:var(--surface);
  border-radius:var(--r-lg); box-shadow:var(--sh-border),var(--sh-1);
  transition:box-shadow var(--dur),transform var(--dur); }
/* No hover MOVEMENT on product cards (removed at request, 2026-07-27): no lift,
   no tilt. The pointer-tilt group in fx.js also had .pcard removed. What is left
   is a static depth change on hover, which keeps the affordance without the card
   shifting under the cursor. */
.pcard:hover { box-shadow:var(--sh-border),var(--sh-3),0 0 0 1px var(--accent-glow); }
.pcard__media { position:relative; aspect-ratio:1/1; display:flex; align-items:center; justify-content:center; padding:22px;
  background:
    linear-gradient(160deg,color-mix(in srgb,var(--card-accent) 18%,#ffffff),color-mix(in srgb,var(--card-accent) 9%,#ffffff)); }
/* browsers without color-mix keep the old neutral tile rather than losing the
   gradient entirely */
@supports not (background:color-mix(in srgb,#000 10%,#fff)) {
  .pcard__media { background:linear-gradient(160deg,var(--n-50),var(--n-100)); }
}
.pcard__media .vial-svg { height:82%; width:auto; }
/* Real per-SKU vial photo. CONTAIN, not cover: the On Top Labs renders are tall
   (671x1000) transparent cut-outs, so `cover` in a 1:1 tile crops the cap and
   the base off every vial. They also have no studio background to bleed to the
   tile edge - the area-tinted tile shows through, which is the point. */
.vial-img { display:block; }
.pcard__media .vial-img { position:absolute; inset:0; width:100%; height:100%; object-fit:contain; padding:14px; }
.cart-line__thumb .vial-img { width:100%; height:100%; object-fit:contain; }
.stack-chip .svg-wrap .vial-img, .stack-line__v .vial-img, .sv-item .vial-img, .sv-dd-trigger .vial-img { width:100%; height:100%; object-fit:contain; }
/* Area chip. Was white-on-gradient, which measured 2.8:1 and failed AA at
   7.5px; it now takes the area's own tint + darkened ink inline (>=4.8:1) and
   sits on white so it reads as a label rather than a sticker. */
.pcard__area {
  position:absolute; top:9px; right:9px; left:auto; display:inline-block;
  max-width:62%; padding:3px 8px; border-radius:var(--r-pill);
  background:var(--n-0); color:var(--ink-2);
  font-family:var(--font-mono); font-size:7.5px; text-transform:uppercase;
  letter-spacing:.07em; line-height:1.35; text-align:right;
  box-shadow:0 0 0 1px rgba(20,20,20,.06);
}
.pcard__rating { position:absolute; top:10px; right:10px; display:inline-flex; align-items:center; gap:4px; font-size:11px; font-family:var(--font-mono); background:var(--surface); padding:3px 7px; border-radius:var(--r-pill); box-shadow:var(--sh-border); color:var(--ink-2); }
.pcard__rating svg { width:11px; height:11px; color:var(--warn); fill:var(--warn); }
.pcard__body { padding:15px 16px 17px; display:flex; flex-direction:column; gap:4px; flex:1; }
.pcard__name { font-weight:700; font-size:var(--step-0); letter-spacing:-.01em; }
.pcard__sub { font-size:var(--step--2); color:var(--ink-3); font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.05em; }
.pcard__meta { margin-top:6px; display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.pcard__purity { font-size:11px; font-family:var(--font-mono); color:var(--ok); background:var(--ok-tint); padding:2px 7px; border-radius:var(--r-pill); }
.pcard__foot { margin-top:auto; padding-top:13px; display:flex; align-items:flex-end; justify-content:space-between; gap:10px; }
.pcard__price { font-weight:700; font-size:var(--step-1); letter-spacing:-.02em; }
.pcard__price small { font-weight:500; font-size:var(--step--2); color:var(--ink-3); font-family:var(--font-mono); }
.pcard__mode-tag { font-family:var(--font-mono); font-size:9px; text-transform:uppercase; letter-spacing:.1em; color:var(--accent-ink); background:var(--accent-tint); padding:2px 6px; border-radius:var(--r-sm); }

/* ---- section heads ---- */
.sec-head { display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:34px; flex-wrap:wrap; }
.sec-head h2 { font-size:var(--step-3); max-width:22ch; }
.sec-head p { color:var(--ink-2); max-width:46ch; margin-top:10px; }

/* ---- research area tiles ---- */
.area-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
@media (max-width:960px){ .area-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:520px){ .area-grid{ grid-template-columns:1fr; } }
.area-tile { display:flex; flex-direction:column; gap:10px; padding:22px; background:var(--surface); border-radius:var(--r-lg); box-shadow:var(--sh-border),var(--sh-1); transition:box-shadow var(--dur),transform var(--dur); }
.area-tile:hover { transform:translateY(-3px); box-shadow:var(--sh-border),var(--sh-2); }
.area-tile__icon { width:42px; height:42px; border-radius:var(--r-md); background:var(--accent-tint); color:var(--accent-ink); display:flex; align-items:center; justify-content:center; }
.area-tile__icon svg { width:22px; height:22px; }
.area-tile h3 { font-size:var(--step-1); }
.area-tile p { font-size:var(--step--1); color:var(--ink-2); }
.area-tile__count { margin-top:auto; font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--accent-ink); }

/* ---- stat row ---- */
.stat-row { display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:1px; background:var(--line); border-radius:var(--r-lg); overflow:hidden; box-shadow:var(--sh-border); }
.stat-cell { background:var(--surface); padding:22px 20px; }
.band-dark .stat-cell { background:var(--d-surface); }
.stat-cell__v { font-size:var(--step-3); font-weight:700; letter-spacing:-.03em; }
.stat-cell__l { font-family:var(--font-mono); font-size:var(--step--2); text-transform:uppercase; letter-spacing:.08em; color:var(--ink-3); margin-top:4px; }

/* ---- accordion ---- */
.acc { border-top:1px solid var(--line); }
.acc__item { border-bottom:1px solid var(--line); }
.acc__q { width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px; padding:18px 4px; text-align:left; font-weight:600; font-size:var(--step-0); background:transparent; }
.acc__q svg { width:18px; height:18px; color:var(--ink-3); transition:transform var(--dur); flex:none; }
.acc__item.open .acc__q svg { transform:rotate(45deg); }
.acc__a { max-height:0; overflow:hidden; transition:max-height var(--dur-mod) var(--ease-std); }
.acc__a p { padding:0 4px 18px; color:var(--ink-2); font-size:var(--step--1); max-width:70ch; }
@media (prefers-reduced-motion:reduce){ .acc__a{ transition:none; } }

/* ---- FAQ page ---- */
.faq-layout { display:grid; grid-template-columns:250px minmax(0,1fr); gap:clamp(28px,4vw,56px); align-items:start; }
.faq-side { position:sticky; top:calc(var(--nav-h) + 24px); display:flex; flex-direction:column; gap:20px; }
.faq-nav { display:flex; flex-direction:column; gap:4px; }
.faq-nav a { display:flex; align-items:center; gap:10px; padding:10px 12px; border-radius:var(--r-md); font-size:var(--step--1); font-weight:550; color:var(--ink-2); transition:background var(--dur),color var(--dur); }
.faq-nav a svg { width:16px; height:16px; flex:none; color:var(--ink-3); transition:color var(--dur); }
.faq-nav a:hover { background:var(--surface); color:var(--ink); box-shadow:var(--sh-border); }
.faq-nav a.on { background:var(--accent-tint); color:var(--accent-ink); }
.faq-nav a.on svg { color:var(--accent); }
.faq-nav a .n { margin-left:auto; font-family:var(--font-mono); font-size:var(--step--2); color:var(--ink-faint); }
.faq-help { padding:20px; background:var(--brand-grad); border-radius:var(--r-lg); color:#fff; box-shadow:var(--sh-2); }
.faq-help h3 { font-size:var(--step-0); color:#fff; }
.faq-help p { font-size:var(--step--1); color:rgba(255,255,255,.82); margin-top:6px; }
.faq-help .btn { margin-top:14px; width:100%; background:#fff; color:var(--brand-ink); }
@media (hover:hover){ .faq-help .btn:hover { background:var(--n-100); } }
.faq-group { scroll-margin-top:calc(var(--nav-h) + 20px); }
.faq-group + .faq-group { margin-top:clamp(28px,3.5vw,44px); }
.faq-group__head { display:flex; align-items:center; gap:12px; margin-bottom:14px; }
.faq-group__ico { width:38px; height:38px; flex:none; display:grid; place-items:center; background:var(--accent-tint); color:var(--accent); border-radius:var(--r-md); }
.faq-group__ico svg { width:19px; height:19px; }
.faq-group__head h2 { font-size:var(--step-1); }
.faq-group__head .n { margin-left:auto; font-family:var(--font-mono); font-size:var(--step--2); text-transform:uppercase; letter-spacing:.08em; color:var(--ink-faint); }
.faq-acc { border:0; background:var(--surface); border-radius:var(--r-lg); box-shadow:var(--sh-border),var(--sh-1); overflow:hidden; }
.faq-acc .acc__item { border-bottom:1px solid var(--line-2); transition:background var(--dur); }
.faq-acc .acc__item:last-child { border-bottom:0; }
.faq-acc .acc__q { padding:17px 20px; }
.faq-acc .acc__q svg { width:16px; height:16px; color:var(--accent); background:var(--accent-tint); border-radius:var(--r-pill); padding:3px; box-sizing:content-box; }
.faq-acc .acc__item.open { background:var(--n-50); }
.faq-acc .acc__a p { padding:0 20px 18px; }
.faq-acc .acc__a a { color:var(--accent); font-weight:550; text-decoration:underline; text-underline-offset:2px; }
@media (max-width:900px){
  .faq-layout { grid-template-columns:1fr; }
  .faq-side { position:static; }
  .faq-nav { flex-direction:row; overflow-x:auto; padding-bottom:4px; }
  .faq-nav a { white-space:nowrap; background:var(--surface); box-shadow:var(--sh-border); }
  .faq-nav a .n { display:none; }
  .faq-help { order:2; }
}

/* ---- newsletter ---- */
.field { display:flex; gap:10px; flex-wrap:wrap; }
.input, input[type=text], input[type=email], input[type=number], select, textarea {
  width:100%; padding:11px 14px; border-radius:var(--r-md); border:1px solid var(--line-strong);
  background:var(--surface); color:var(--ink); font:inherit; font-size:var(--step--1); transition:border var(--dur),box-shadow var(--dur);
}
.input:focus, input:focus, select:focus, textarea:focus { outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-glow); }
label.lbl { display:block; font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-3); margin-bottom:6px; }

/* ---- toast ---- */
.toast-zone { position:fixed; bottom:20px; left:50%; transform:translateX(-50%); z-index:120; display:flex; flex-direction:column; gap:8px; align-items:center; pointer-events:none; }
.toast { background:var(--n-950); color:#fff; padding:11px 18px; border-radius:var(--r-md); font-size:var(--step--1); box-shadow:var(--sh-3); display:flex; align-items:center; gap:10px; animation:toastIn .3s var(--ease-std); }
.toast svg { width:16px; height:16px; color:var(--ok-dark); }
@keyframes toastIn { from{ opacity:0; transform:translateY(10px);} to{opacity:1;transform:none;} }

/* ---- overlays: drawer / search / coa ---- */
.backdrop { position:fixed; inset:0; z-index:90; background:rgba(9,11,16,.5); backdrop-filter:blur(2px); opacity:0; visibility:hidden; transition:opacity var(--dur),visibility var(--dur); }
.backdrop.open { opacity:1; visibility:visible; }

.drawer { position:fixed; top:0; right:0; bottom:0; z-index:100; width:min(420px,92vw); background:var(--surface); box-shadow:var(--sh-4); transform:translateX(100%); transition:transform var(--dur-mod) var(--ease-std); display:flex; flex-direction:column; }
.drawer.open { transform:none; }
.drawer__head { padding:18px 20px; border-bottom:1px solid var(--line); display:flex; align-items:center; justify-content:space-between; }
.drawer__head h3 { font-size:var(--step-1); }
.drawer__body { flex:1; overflow:auto; padding:8px 20px; }
.drawer__foot { border-top:1px solid var(--line); padding:18px 20px; background:var(--surface-2); }

.cart-line { display:grid; grid-template-columns:52px 1fr auto; gap:12px; padding:14px 0; border-bottom:1px solid var(--line); align-items:center; }
.cart-line__thumb { width:52px; height:52px; border-radius:var(--r-md); background:var(--surface-2); display:flex; align-items:center; justify-content:center; padding:5px; box-shadow:var(--sh-border); }
.cart-line__thumb .vial-svg { height:100%; }
.cart-line__name { font-weight:600; font-size:var(--step--1); }
.cart-line__meta { font-family:var(--font-mono); font-size:11px; color:var(--ink-3); text-transform:uppercase; }
.cart-line__free { color:var(--ok); font-weight:600; }
.qty-step { display:inline-flex; align-items:center; border:1px solid var(--line-strong); border-radius:var(--r-md); overflow:hidden; }
.qty-step button { width:26px; height:26px; display:flex; align-items:center; justify-content:center; background:var(--surface); color:var(--ink-2); }
.qty-step button:hover { background:var(--surface-2); }
.qty-step span { min-width:26px; text-align:center; font-size:var(--step--1); font-variant-numeric:tabular-nums; }
.cart-rm { color:var(--ink-3); font-size:11px; margin-top:4px; background:none; }
.cart-rm:hover { color:var(--err); }

.cart-totals { font-size:var(--step--1); }
.cart-totals__row { display:flex; justify-content:space-between; padding:4px 0; color:var(--ink-2); }
.cart-totals__row.big { color:var(--ink); font-weight:700; font-size:var(--step-1); padding-top:10px; margin-top:6px; border-top:1px solid var(--line); }
.cart-totals__row.save { color:var(--ok); font-weight:600; }
.cart-note { font-size:11px; color:var(--ink-3); font-family:var(--font-mono); margin-top:8px; line-height:1.5; }

/* search panel */
.search-panel { position:fixed; top:0; left:0; right:0; z-index:100; background:var(--surface); box-shadow:var(--sh-3); transform:translateY(-100%); transition:transform var(--dur-mod) var(--ease-std); max-height:82vh; overflow:auto; }
.search-panel.open { transform:none; }
.search-panel__in { padding:22px 24px; max-width:760px; margin-inline:auto; }
.search-input-row { display:flex; align-items:center; gap:12px; border-bottom:2px solid var(--ink); padding-bottom:12px; }
.search-input-row input { border:none; box-shadow:none; font-size:var(--step-2); padding:4px 0; }
.search-input-row input:focus { box-shadow:none; }
.search-chips { display:flex; gap:8px; flex-wrap:wrap; margin-top:16px; }
.search-chip { padding:6px 12px; border-radius:var(--r-pill); background:var(--surface-2); border:1px solid var(--line); font-size:var(--step--2); font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.06em; }
.search-chip:hover { background:var(--accent-tint); border-color:var(--accent-tint-2); color:var(--accent-ink); }
.search-results { margin-top:20px; display:grid; grid-template-columns:repeat(auto-fill,minmax(160px,1fr)); gap:12px; }

/* COA modal */
.coa-modal { position:fixed; inset:0; z-index:110; display:none; align-items:center; justify-content:center; padding:24px; }
.coa-modal.open { display:flex; }
.coa-modal__card { width:min(880px,96vw); height:min(88vh,900px); background:var(--surface); border-radius:var(--r-lg); box-shadow:var(--sh-4); display:flex; flex-direction:column; overflow:hidden; }
.coa-modal__head { padding:14px 18px; border-bottom:1px solid var(--line); display:flex; align-items:center; gap:12px; }
.coa-modal__head h3 { font-size:var(--step-0); }
.coa-modal__head .sub { font-family:var(--font-mono); font-size:11px; color:var(--ink-3); text-transform:uppercase; letter-spacing:.06em; }
.coa-modal__head .spacer { margin-left:auto; }
.coa-modal__body { flex:1; background:var(--n-100); }
.coa-modal__body iframe { width:100%; height:100%; border:0; }
.coa-modal__foot { padding:12px 18px; border-top:1px solid var(--line); background:var(--surface-2); font-size:var(--step--2); color:var(--ink-3); display:flex; justify-content:space-between; align-items:center; gap:12px; }

/* ---- vial svg ---- */
.vial-svg { display:block; }

/* ---- utility ---- */
.stack { display:flex; flex-direction:column; }
.gap-2{gap:8px} .gap-3{gap:12px} .gap-4{gap:16px} .gap-6{gap:24px}
.flex{display:flex} .items-center{align-items:center} .justify-between{justify-content:space-between}
.wrap-flex{flex-wrap:wrap} .grow{flex:1}
.mt-2{margin-top:8px} .mt-3{margin-top:12px} .mt-4{margin-top:16px} .mt-6{margin-top:24px} .mt-8{margin-top:32px}
.text-c{text-align:center} .mx-auto{margin-inline:auto}
.muted{color:var(--ink-2)} .faint{color:var(--ink-3)} .accent{color:var(--accent-ink)}
.mono{font-family:var(--font-mono)}
.divider{height:1px;background:var(--line);border:0;margin:0}
.badge-demo{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--warn-ink);background:#fbf3e4;border:1px solid #f0dcb4;padding:3px 9px;border-radius:var(--r-pill)}
.lead{font-size:var(--step-1);color:var(--ink-2);line-height:1.6;max-width:60ch}

/* generic page hero */
.page-hero { padding-block:clamp(40px,6vw,84px) clamp(30px,4vw,48px); }
.page-hero h1 { font-size:var(--step-4); max-width:20ch; }
.page-hero .lead { margin-top:16px; }
.crumbs { font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-3); margin-bottom:14px; display:flex; gap:8px; }
.crumbs a:hover { color:var(--accent-ink); }

/* prose */
.prose { max-width:70ch; }
.prose h2 { font-size:var(--step-2); margin-top:36px; margin-bottom:12px; }
.prose h3 { font-size:var(--step-1); margin-top:24px; margin-bottom:8px; }
.prose p { color:var(--ink-2); margin-bottom:14px; line-height:1.7; }
.prose ul { color:var(--ink-2); padding-left:20px; margin-bottom:14px; line-height:1.7; }
.prose li { margin-bottom:6px; }

/* mol banner */
.mol-section { position:relative; overflow:hidden; }
/* canvas is a replaced element: inset:0 alone keeps its intrinsic 300x150,
   so it must be told to fill the band explicitly (else it boxes into the corner) */
.mol-bg { position:absolute; inset:0; width:100%; height:100%; z-index:1; opacity:.9; display:block; }
.mol-section > .wrap, .mol-section > .wrap-wide { position:relative; z-index:2; }

/* tables */
.tbl { width:100%; border-collapse:collapse; font-size:var(--step--1); }
.tbl th, .tbl td { text-align:left; padding:11px 14px; border-bottom:1px solid var(--line); }
.tbl th { font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-3); font-weight:600; }
.tbl tbody tr:hover { background:var(--surface-2); }
.tbl-wrap { overflow-x:auto; border-radius:var(--r-lg); box-shadow:var(--sh-border); }

/* feature cards */
.feature-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:18px; }
.feature { padding:24px; border-radius:var(--r-lg); background:var(--surface); box-shadow:var(--sh-border),var(--sh-1); position:relative; overflow:hidden; transition:box-shadow var(--dur),transform var(--dur); }
.feature::before { content:""; position:absolute; top:0; left:0; right:0; height:3px; background:var(--brand-grad); transform:scaleX(0); transform-origin:left; transition:transform var(--dur-mod) var(--ease-std); }
.feature:hover { transform:translateY(-3px); box-shadow:var(--sh-border),var(--sh-2); }
.feature:hover::before { transform:scaleX(1); }
.feature__icon { width:44px; height:44px; border-radius:var(--r-md); background:var(--accent-tint); color:var(--accent-ink); display:flex; align-items:center; justify-content:center; margin-bottom:14px; }
.feature__icon svg { width:22px; height:22px; }
.feature h3 { font-size:var(--step-1); margin-bottom:8px; }
.feature p { color:var(--ink-2); font-size:var(--step--1); }

/* review cards */
.review { padding:22px; border-radius:var(--r-lg); background:var(--surface); box-shadow:var(--sh-border),var(--sh-1); border-left:3px solid var(--accent); }
.review__stars { display:flex; gap:2px; color:#ffb300; margin-bottom:10px; }
.review__stars svg { width:15px; height:15px; fill:#ffb300; }
.review p { color:var(--ink-2); font-size:var(--step--1); }
.review__who { margin-top:12px; font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-3); }

/* hero (home) - WHITE, like the live site. Every sibling store opens on a dark
   band; On Top Labs opens on paper with royal type and a flat royal CTA. The
   glow animation went with the dark background - flat means flat. */
.hero { position:relative; overflow:hidden; padding-block:clamp(56px,8vw,120px); background:var(--bg); color:var(--ink); border-bottom:1px solid var(--line); }
.hero__glow { display:none; }
/* hero backdrop: faint royal dot grid on paper, fading out to the right */
.hero__grid { position:absolute; inset:0; background:
    radial-gradient(rgba(32,49,145,.10) 1px, transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:radial-gradient(ellipse 80% 90% at 78% 40%,#000,transparent 78%); mask-image:radial-gradient(ellipse 80% 90% at 78% 40%,#000,transparent 78%); }
/* minmax(0,…) rather than bare fr: an fr track floors at min-content, so the
   display-size h1 was inflating the text column and squeezing the visual to
   ~78px. Letting the track shrink below min-content makes the headline wrap. */
.hero__in { position:relative; z-index:2; display:grid; grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr); gap:40px; align-items:center; }
/* sized against the viewport rather than --step-6: the display max was wider
   than the text column, so long words overflowed across the hero animation */
.hero h1 { font-size:clamp(2.4rem,4.9vw,4.4rem); letter-spacing:-.02em; text-wrap:balance; overflow-wrap:break-word; }
/* the spectrum, run through the headline */
.hero h1 .accent-line { background:var(--spectrum); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero__lead { color:var(--ink-2); font-size:var(--step-1); margin-top:20px; max-width:46ch; }
.hero__cta { display:flex; gap:12px; margin-top:28px; flex-wrap:wrap; }
.hero__facts { display:flex; gap:24px; margin-top:34px; flex-wrap:wrap; }
.hero__fact { }
.hero__fact b { display:block; font-size:var(--step-2); font-weight:700; letter-spacing:-.02em; }
.hero__fact span { font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-3); }
/* the hero counters read in royal on paper - the one place the number IS the brand */
.hero__fact b { color:var(--brand-primary); }
.hero__visual { position:relative; display:flex; align-items:center; justify-content:center; min-height:min(560px,64vh); }
/* the molecule + helix canvas (assets/js/hero-helix.js) sits above the ambient
   glow and ring, and never intercepts a pointer */
.hero-canvas { position:absolute; inset:0; width:100%; height:100%; z-index:2; pointer-events:none; display:block; }
/* soft specimen light behind the vial */
.hero__visual::before { content:""; position:absolute; width:min(440px,92%); aspect-ratio:1; border-radius:50%;
  background:radial-gradient(circle,rgba(147,197,253,.26),rgba(32,49,145,.12) 45%,transparent 66%); filter:blur(6px); z-index:0; }
/* The hard halo ring that used to sit here was competing with the canvas and
   reading as a grey disc edge behind it. The animation carries the hero now;
   only the soft light above remains. */
@media (prefers-reduced-motion:reduce){ .hero__visual::after{ animation:none; } }
.hero-specimen { position:relative; z-index:2; display:flex; flex-direction:column; align-items:center; }
/* real vial photo, background removed, floating over the dark hero */
.hero-vial-img { width:auto; height:min(460px,72vh); max-width:80vw; object-fit:contain; display:block;
  filter:drop-shadow(0 40px 46px rgba(0,0,0,.55)) drop-shadow(0 0 30px rgba(147,197,253,.14));
  animation:hero-float 6s var(--ease-move) infinite; }
@keyframes hero-float { 0%,100%{ transform:translateY(0); } 50%{ transform:translateY(-12px); } }
@media (prefers-reduced-motion:reduce){ .hero-vial-img { animation:none; } }
@media (max-width:900px){
  .hero{ padding-block:44px 46px; }
  /* minmax(0,…) here too - a bare 1fr floors at min-content, which let the
     display headline push the whole hero wider than the viewport */
  .hero__in{ grid-template-columns:minmax(0,1fr); gap:0; }
  .hero h1{ font-size:clamp(1.85rem,7.6vw,3.1rem); }
  /* the canvas is absolutely positioned, so the visual needs a real height of
     its own here or the animation collapses to nothing on phones */
  .hero__visual{ min-height:min(360px,46vh); margin-top:30px; }
  .hero__visual::before{ width:min(320px,82vw); }
  .hero-vial-img{ height:min(320px,42vh); }
  .hero__facts{ gap:20px; margin-top:26px; }
}

/* logo mark: the chromatogram trace keeps its own inline colours */
.logo-mark { display:block; }

/* mode pricing banner */
.mode-banner { display:flex; align-items:center; gap:14px; flex-wrap:wrap; padding:14px 18px; border-radius:var(--r-lg); background:var(--accent-tint); border:1px solid var(--accent-tint-2); color:var(--accent-ink); font-size:var(--step--1); }
.mode-banner svg { width:20px; height:20px; flex:none; }
.mode-banner strong { font-weight:700; }

/* shop toolbar */
.shop-toolbar { border-bottom:1px solid var(--line); padding-block:14px; margin-bottom:28px; }
.tool-selects { display:flex; gap:12px; flex-wrap:wrap; align-items:center; }
.tool-select { position:relative; display:inline-flex; align-items:center; gap:11px; padding:7px 40px 7px 8px; background:var(--surface); border:1px solid var(--line); border-radius:var(--r-pill); box-shadow:var(--sh-border),var(--sh-1); cursor:pointer; transition:border-color var(--dur),box-shadow var(--dur),transform var(--dur); }
.tool-select:hover { transform:translateY(-1px); box-shadow:var(--sh-border),var(--sh-2); }
.tool-select:focus-within { border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-tint),var(--sh-1); }
.tool-select__chip { display:grid; place-items:center; width:34px; height:34px; flex:none; border-radius:var(--r-pill); background:var(--accent-tint); color:var(--accent); }
.tool-select__chip svg { width:17px; height:17px; }
.tool-select__body { display:flex; flex-direction:column; gap:1px; }
.tool-select__label { font-family:var(--font-mono); font-size:10px; text-transform:uppercase; letter-spacing:.09em; color:var(--ink-3); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.tool-select select { width:auto; appearance:none; -webkit-appearance:none; border:0; background:transparent; box-shadow:none; border-radius:0; padding:0; font-weight:620; font-size:var(--step--1); line-height:1.3; color:var(--ink); cursor:pointer; }
.tool-select select:focus { outline:none; box-shadow:none; }
.tool-select::after { content:""; position:absolute; right:17px; top:50%; width:7px; height:7px; border-right:1.6px solid var(--ink-3); border-bottom:1.6px solid var(--ink-3); transform:translateY(-70%) rotate(45deg); pointer-events:none; transition:border-color var(--dur); }
.tool-select:focus-within::after { border-color:var(--accent); }
@media (max-width:640px){ .tool-selects{ width:100%; flex-wrap:nowrap; } .tool-selects .tool-select{ flex:1; min-width:0; } .tool-select__body{ min-width:0; flex:1; } .tool-select select{ width:100%; overflow:hidden; text-overflow:ellipsis; } }

/* KPI cards (affiliate) */
.kpi-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(170px,1fr)); gap:16px; }
.kpi { padding:20px; border-radius:var(--r-lg); background:var(--surface); box-shadow:var(--sh-border),var(--sh-1); }
.kpi__v { font-size:var(--step-3); font-weight:700; letter-spacing:-.03em; }
.kpi__l { font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-3); margin-top:4px; }
.kpi__sub { font-size:11px; color:var(--ok); margin-top:6px; font-family:var(--font-mono); }

.chan-tag { font-family:var(--font-mono); font-size:10px; text-transform:uppercase; letter-spacing:.08em; padding:2px 7px; border-radius:var(--r-pill); }
.chan-tag.d2c { background:var(--accent-tint); color:var(--accent-ink); }
.chan-tag.b2b { background:#f0fdf4; color:#14532d; }

.copy-field { display:flex; align-items:center; gap:8px; padding:8px 8px 8px 14px; border-radius:var(--r-md); border:1px solid var(--line-strong); background:var(--surface-2); font-family:var(--font-mono); font-size:var(--step--1); }
.copy-field code { flex:1; overflow:auto; white-space:nowrap; }

/* verify result */
.verify-result { margin-top:20px; padding:22px; border-radius:var(--r-lg); }
.verify-result.ok { background:var(--ok-tint); border:1px solid #bfe6cd; }
.verify-result.bad { background:#fdeceb; border:1px solid #f4c9c6; }

.two-col { display:grid; grid-template-columns:1fr 1fr; gap:32px; }
@media (max-width:800px){ .two-col{ grid-template-columns:1fr; } }
.three-col { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:800px){ .three-col{ grid-template-columns:1fr; } }

.hidden { display:none !important; }

/* =====================================================================
   ASPECT-PARITY COMPONENTS  (stack builder, structure viewer, bespoke
   flagship data-viz, DNA verify band, proof tabs, account, bundles)
   ===================================================================== */
:root{--brand-grad-soft:linear-gradient(90deg,#203191,#93c5fd)}

/* ---- molecule banner ---- */
.mol-banner{position:relative;overflow:hidden;background:var(--d-bg);color:#fff;isolation:isolate}
.mol-banner canvas.molbg{position:absolute;inset:0;z-index:0;opacity:.9}
.mol-banner .wrap{position:relative;z-index:1}
.mol-banner h1{color:#fff}
.mol-banner .eyebrow{color:var(--brand-sky)}
.mol-banner p{color:var(--d-ink-2)}

/* ---- Build-a-Stack ---- */
.stack-layout{display:grid;grid-template-columns:1fr 360px;gap:32px;align-items:start}
.stack-pick{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.stack-chip{position:relative;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);padding:12px;cursor:pointer;transition:border-color var(--dur),box-shadow var(--dur),transform var(--dur-fast);text-align:left}
.stack-chip:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--sh-2)}
.stack-chip.on{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-tint)}
.stack-chip .svg-wrap{height:64px;display:flex;justify-content:center;margin-bottom:8px}
.stack-chip .svg-wrap .vial-svg{height:64px}
.stack-chip__name{font-weight:700;font-size:var(--step-0)}
.stack-chip__meta{font-size:12px;color:var(--ink-3);font-family:var(--font-mono)}
.stack-chip__price{font-weight:700;margin-top:4px}
.stack-chip__add{position:absolute;top:8px;right:8px;width:26px;height:26px;border-radius:var(--r-pill);background:var(--accent);color:#fff;display:grid;place-items:center;opacity:0;transition:opacity var(--dur)}
.stack-chip:hover .stack-chip__add,.stack-chip.on .stack-chip__add{opacity:1}
.stack-chip__add svg{width:15px;height:15px}
.stack-summary{position:sticky;top:calc(var(--nav-h) + 16px);border:1px solid var(--line);border-radius:var(--r-xl);background:var(--surface);box-shadow:var(--sh-2);overflow:hidden}
.stack-summary__head{padding:18px 20px;background:var(--brand-grad);color:#fff}
.stack-summary__head h3{color:#fff;margin:0}
.stack-summary__head .save-badge{display:inline-block;margin-top:6px;font-family:var(--font-mono);font-size:12px;background:rgba(255,255,255,.18);padding:3px 10px;border-radius:var(--r-pill)}
.stack-lines{padding:8px 20px;max-height:300px;overflow-y:auto}
.stack-line{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--line-2)}
.stack-line:last-child{border-bottom:none}
.stack-line__v{width:34px;height:34px;flex:none;display:grid;place-items:center}
.stack-line__v .vial-svg{height:34px}
.stack-line__name{font-weight:600;font-size:var(--step--1);flex:1}
.stack-line.free .stack-line__price{color:var(--ok);font-weight:700}
.stack-line__price{font-family:var(--font-mono);font-size:var(--step--1)}
.stack-line__rm{color:var(--ink-3);cursor:pointer;font-size:18px;line-height:1;padding:0 4px}
.stack-line__rm:hover{color:var(--err)}
.stack-empty{padding:40px 20px;text-align:center;color:var(--ink-3)}
.stack-summary__foot{padding:16px 20px;border-top:1px solid var(--line)}
.stack-total-row{display:flex;justify-content:space-between;font-size:var(--step--1);padding:3px 0}
.stack-total-row.save{color:var(--ok)}
.stack-total-row.big{font-size:var(--step-1);font-weight:700;border-top:1px solid var(--line);margin-top:8px;padding-top:10px}
@media(max-width:900px){.stack-layout{grid-template-columns:1fr}.stack-summary{position:static}}

/* ---- Structure viewer ---- */
.sv-layout{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start}
.sv-side{position:sticky;top:calc(var(--nav-h) + 16px);border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);overflow:hidden;max-height:calc(100vh - var(--nav-h) - 40px);overflow-y:auto}
.sv-item{display:flex;align-items:center;gap:10px;padding:10px 14px;cursor:pointer;border-bottom:1px solid var(--line-2)}
.sv-item:hover{background:var(--surface-2)}
.sv-item.on{background:var(--accent-tint)}
.sv-item .vial-svg{height:30px}
.sv-item__name{font-weight:600;font-size:var(--step--1)}
.sv-item__sub{font-size:11px;color:var(--ink-3)}
.sv-detail{border:1px solid var(--line);border-radius:var(--r-xl);background:var(--surface);overflow:hidden}
.sv-stage{background:radial-gradient(circle at 50% 40%,#0d1430,#070a17);padding:40px;display:grid;place-items:center;min-height:320px}
.sv-dropdown{display:none;position:relative;margin-bottom:16px}
.sv-dd-trigger{width:100%;display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);cursor:pointer}
.sv-dd-trigger .vial-svg{height:30px}
.sv-dd-panel{position:absolute;left:0;right:0;top:calc(100% + 6px);z-index:20;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-3);max-height:340px;overflow-y:auto;display:none}
.sv-dd-panel.open{display:block}
@media(max-width:820px){.sv-layout{grid-template-columns:1fr}.sv-side{display:none}.sv-dropdown{display:block}}

/* ---- bespoke flagship data-viz ---- */
.dose-bars{display:flex;flex-direction:column;gap:14px}
.dose-row{display:grid;grid-template-columns:130px 1fr 56px;gap:12px;align-items:center}
.dose-row__lab{font-family:var(--font-mono);font-size:12px;color:var(--ink-2)}
.dose-track{height:26px;border-radius:var(--r-sm);background:var(--surface-sunk);overflow:hidden}
.dose-fill{height:100%;width:0;border-radius:var(--r-sm);background:var(--brand-grad);transition:width 1.1s var(--ease-std)}
.dose-row.in .dose-fill{width:var(--w)}
.dose-row__val{font-family:var(--font-mono);font-size:12px;font-weight:700;text-align:right}
.compare-table{width:100%;border-collapse:collapse}
.compare-table th,.compare-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:var(--step--1)}
.compare-table th{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.04em;font-size:11px;color:var(--ink-3)}
.compare-table tr.me{background:var(--accent-tint)}
.compare-table tr.me td{font-weight:700}
.compare-table td .dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px}
.radar-wrap{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.radar svg{width:100%;max-width:360px;margin:0 auto;display:block}
.pk-wrap{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);padding:20px}
.pk-legend{display:flex;gap:18px;flex-wrap:wrap;margin-top:12px;font-size:12px;font-family:var(--font-mono)}
.pk-legend span{display:inline-flex;align-items:center;gap:6px}
.pk-legend i{width:14px;height:3px;border-radius:2px;display:inline-block}
.timeline{position:relative;padding-left:28px}
.timeline::before{content:"";position:absolute;left:8px;top:4px;bottom:4px;width:2px;background:var(--line-strong)}
.tl-item{position:relative;padding:0 0 22px 8px}
.tl-item::before{content:"";position:absolute;left:-24px;top:3px;width:14px;height:14px;border-radius:50%;background:var(--surface);border:3px solid var(--accent)}
.tl-year{font-family:var(--font-mono);font-weight:700;color:var(--accent);font-size:var(--step--1)}
.tl-item p{color:var(--ink-2);font-size:var(--step--1);margin-top:2px}
.lit-filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.lit-chip{font-size:12px;font-family:var(--font-mono);padding:6px 12px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--surface);cursor:pointer}
.lit-chip.on{background:var(--accent);color:#fff;border-color:var(--accent)}
.lit-item{border-left:2px solid var(--accent);padding:10px 0 10px 16px;margin-bottom:12px}
.lit-item__title{font-weight:600}
.lit-item__meta{font-size:12px;color:var(--ink-3);font-family:var(--font-mono);margin-top:2px}
.ref-list{counter-reset:ref;list-style:none;padding:0}
.ref-list li{counter-increment:ref;position:relative;padding-left:34px;margin-bottom:10px;font-size:var(--step--1);color:var(--ink-2)}
.ref-list li::before{content:counter(ref);position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:var(--surface-sunk);color:var(--ink-2);font-family:var(--font-mono);font-size:11px;display:grid;place-items:center}
.binding-bars{display:flex;flex-direction:column;gap:12px}
.bind-row{display:grid;grid-template-columns:110px 1fr 44px;gap:10px;align-items:center;font-size:12px;font-family:var(--font-mono)}
.bind-track{height:10px;border-radius:var(--r-pill);background:var(--surface-sunk);overflow:hidden}
.bind-fill{height:100%;width:0;background:var(--brand-grad-soft);transition:width 1s var(--ease-std)}
.bind-row.in .bind-fill{width:var(--w)}

/* ---- DNA verify band + proof tabs ---- */
.proof-band{background:var(--d-bg);color:#fff;position:relative;overflow:hidden}
.proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.proof-tabs{display:flex;gap:6px;flex-wrap:wrap;margin:18px 0}
.proof-tab{font-family:var(--font-mono);font-size:12px;padding:8px 14px;border-radius:var(--r-pill);border:1px solid var(--d-line-2);background:transparent;color:var(--d-ink-2);cursor:pointer}
.proof-tab.on{background:var(--accent);color:#fff;border-color:var(--accent)}
.proof-pane{display:none}.proof-pane.on{display:block}
.proof-pane p{color:var(--d-ink-2)}
.proof-stat-row{display:flex;gap:28px;margin-top:20px;flex-wrap:wrap}
.proof-stat b{font-size:var(--step-3);font-family:var(--font-mono);color:#fff;display:block;line-height:1}
.proof-stat span{font-size:12px;color:var(--d-ink-3);font-family:var(--font-mono)}
.dna-stage{position:relative;height:360px;display:grid;place-items:center}
.dna-stage .vialfloat{position:relative;z-index:2;height:280px;animation:float 5s var(--ease-move) infinite}
.dna-stage .vialfloat .vial-svg{height:280px;filter:drop-shadow(0 20px 40px rgba(0,0,0,.5))}
@keyframes float{0%,100%{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-14px) rotate(3deg)}}
.dna-svg{position:absolute;inset:0;width:100%;height:100%;z-index:1;opacity:.55}
@media(prefers-reduced-motion:reduce){.dna-stage .vialfloat{animation:none}}
@media(max-width:820px){.proof-grid{grid-template-columns:1fr}.dna-stage{height:280px}}

/* ---- account ---- */
.acct-grid{display:grid;grid-template-columns:230px 1fr;gap:28px;align-items:start}
.acct-nav{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);overflow:hidden;position:sticky;top:calc(var(--nav-h) + 16px)}
.acct-nav button{width:100%;text-align:left;padding:12px 16px;border-bottom:1px solid var(--line-2);cursor:pointer;font-weight:550;font-size:var(--step--1);color:var(--ink-2);background:none}
.acct-nav button:last-child{border-bottom:none}
.acct-nav button.on{background:var(--accent-tint);color:var(--accent-ink)}
.acct-pane{display:none}.acct-pane.on{display:block}
@media(max-width:760px){.acct-grid{grid-template-columns:1fr}.acct-nav{position:static;display:flex;overflow-x:auto}.acct-nav button{border-bottom:none;white-space:nowrap}}

/* =====================================================================
   $100K POLISH LAYER - R1 craft refinements (type tracking, selection,
   scrollbar, focus, motion easing, premium micro-details)
   ===================================================================== */
:root{ --ease-emphasized:cubic-bezier(.05,.7,.1,1); }

/* display tracking - tighten large type per R1 (−3% >40px) */
.hero__in h1, .mol-banner h1 { letter-spacing:-.02em; line-height:1.05; }
.sec-head h2, .flag-head h2 { letter-spacing:-.025em; }
h1 { letter-spacing:-.03em; }

/* selection + accent underline emphasis */
::selection { background:var(--accent-tint-2); color:var(--accent-press); }
.accent-line { position:relative; white-space:nowrap; }

/* refined thin scrollbar (desktop) */
@media (pointer:fine){
  *{ scrollbar-width:thin; scrollbar-color:var(--n-300) transparent; }
  *::-webkit-scrollbar{ width:10px; height:10px; }
  *::-webkit-scrollbar-thumb{ background:var(--n-300); border-radius:99px; border:3px solid var(--bg); }
  *::-webkit-scrollbar-thumb:hover{ background:var(--n-400); }
  *::-webkit-scrollbar-track{ background:transparent; }
}

/* focus-visible: crisp accent ring that reads on any surface */
:focus-visible { outline:2px solid var(--accent); outline-offset:2px; border-radius:var(--r-xs); }
.band-dark :focus-visible { outline-color:var(--accent-dark); }
a:focus-visible, .btn:focus-visible, .icon-btn:focus-visible { outline-offset:3px; }

/* cards: held by a hairline at rest, one soft lift on hover */
.card-hover:hover, .pcard:hover, .area-tile:hover { box-shadow:0 0 0 1px var(--line-strong),var(--sh-2); }

/* premium hairline dividers */
.rule { height:1px; background:var(--line); border:0; margin:0; }
.rule-strong { height:1px; background:var(--line-strong); border:0; }

/* icon crispness - align to the R1 1.5-2px stroke, one set */
.btn svg, .pill svg, .icon-btn svg, .feature__icon svg, .area-tile__icon svg { stroke-width:1.75; }

/* section rhythm: kill compounding - same-rank sections share padding already via .section */

/* premium: subtle top-lit inner highlight on the primary CTA only (R1 near-threshold) */
.btn-glow { background-image:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,0) 42%); }

/* global reduced-motion safety - keep opacity/color, drop transforms */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
  .reveal{ opacity:1 !important; transform:none !important; }
}

/* =====================================================================
   MOTION LAYER - scroll rail, tilt/magnetic supports (fx.js)
   ===================================================================== */
.scroll-rail {
  position:fixed; top:0; left:0; right:0; height:2px; z-index:200;
  background:var(--brand-grad); transform:scaleX(0); transform-origin:0 50%;
  pointer-events:none; will-change:transform;
}
/* tilt group: gpu hint + flatten children so rotation reads cleanly */
.pcard, .area-tile, .feature { transform-style:preserve-3d; backface-visibility:hidden; }
/* press tactility on primary actions (transform/opacity only) */
.btn-glow:active { transform:scale(.98) !important; }
@media (prefers-reduced-motion:reduce){
  .scroll-rail{ display:none; }
  .btn-glow:active{ transform:none !important; }
}

/* =====================================================================
   AMBIENT MOTION + HOME PROMO POLISH (verify band / stack promo / affiliate)
   ===================================================================== */
.motion-canvas { position:absolute; inset:0; width:100%; height:100%; pointer-events:none; z-index:0; }
.verify-band, .stack-promo, .aff-promo { position:relative; overflow:hidden; }
.verify-band .wrap-wide, .stack-promo__in, .aff-promo__in { position:relative; z-index:2; }

/* --- verification band --- */
.verify-cols { align-items:center; gap:clamp(28px,4.5vw,56px); }
.orbit-hero { position:relative; min-height:clamp(220px,32vw,360px); }
@media (max-width:800px){
  .orbit-hero { min-height:190px; margin-top:6px; }
  .verify-cols { gap:20px; }
}

/* --- stack promo (gradient card) --- */
.stack-promo { padding:0; background:var(--brand-grad); color:#fff; box-shadow:var(--sh-3); }
.stack-promo__in { display:grid; grid-template-columns:1.15fr 1fr; align-items:stretch; }
.stack-promo__copy { padding:clamp(26px,4vw,52px); }
.stack-promo__stats {
  display:grid; place-content:center; gap:18px; text-align:center;
  padding:clamp(26px,4vw,52px);
  background:linear-gradient(135deg, rgba(255,255,255,.05), rgba(255,255,255,0) 55%);
  border-left:1px solid rgba(255,255,255,.14);
}
.stack-promo__nums { display:flex; justify-content:center; gap:clamp(24px,4vw,44px); flex-wrap:wrap; }
.stack-promo__num b { display:block; font-family:var(--font-mono); font-weight:800; font-size:var(--step-5); line-height:1; }
.stack-promo__num span { display:block; margin-top:6px; font-family:var(--font-mono); font-size:11px; letter-spacing:.06em; text-transform:uppercase; opacity:.85; }
.stack-promo__note { font-family:var(--font-mono); font-size:12px; opacity:.85; }
@media (max-width:800px){
  .stack-promo__in { grid-template-columns:1fr; }
  .stack-promo__copy { padding:24px 20px 22px; }
  .stack-promo__stats { border-left:none; border-top:1px solid rgba(255,255,255,.14); padding:20px; gap:12px; }
  .stack-promo__num b { font-size:var(--step-4); }
}

/* --- affiliate promo (dark card) --- */
.aff-promo { padding:clamp(26px,4vw,48px); background:var(--d-bg); color:var(--d-ink); }
.aff-promo__in { align-items:center; gap:clamp(28px,4vw,48px); }
.kpi-grid--2 { grid-template-columns:repeat(2,minmax(0,1fr)); }
.kpi--dark { background:var(--d-surface); color:var(--d-ink); box-shadow:inset 0 1px 0 rgba(255,255,255,.05), 0 0 0 1px var(--d-line); }
.kpi--dark .kpi__l { color:var(--d-ink-3); }
@media (max-width:800px){
  .aff-promo { padding:24px 20px; }
  .aff-promo__in { gap:22px; }
  .kpi-grid--2 { gap:10px; }
  .kpi--dark { padding:16px; }
}

/* Star ratings are GOLD, matching the live site (#ffb300), and gold is
   reserved for exactly this - it must never migrate onto buttons or badges,
   or the rating rows lose the one colour that makes them scannable.
   The fill is only 1.79:1 on white, so the STROKE is a darker gold (#a86a00,
   4.6:1) to hold the star's shape at small sizes. The numeric rating is always
   rendered beside the row, so the score never depends on colour alone. */
svg.on  { fill:#ffb300; stroke:#a86a00; stroke-width:1; }
svg.off { fill:none; stroke:var(--n-300); }
/* on black bands the fill already clears 3:1, so the outline would only muddy it */
.band-dark svg.on { fill:#ffb300; stroke:#ffb300; }

/* ---- add-to-cart on product cards ---- */
.pcard__actions { margin-top:10px; }
.pcard__add { width:100%; justify-content:center; gap:8px; }
.pcard__add svg { width:16px; height:16px; }

/* ---- variant quick-pick sheet ---- */
.qp { position:fixed; inset:0; z-index:120; display:none; align-items:center; justify-content:center; padding:24px; }
.qp.open { display:flex; }
.qp__backdrop { position:absolute; inset:0; background:rgba(10,21,38,.55); backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px); }
.qp__card { position:relative; width:min(420px,94vw); max-height:min(86vh,640px); overflow:auto; background:var(--surface);
  border-radius:var(--r-xl); box-shadow:var(--sh-4), 0 0 0 1px rgba(32,49,145,.16), 0 24px 80px rgba(20,20,20,.38);
  padding:20px 20px 14px; animation:qp-in .28s var(--ease-std); }
@keyframes qp-in { from { opacity:0; transform:translateY(14px) scale(.985); } to { opacity:1; transform:none; } }
.qp__head { display:flex; align-items:flex-start; justify-content:space-between; gap:12px; margin-bottom:14px; }
.qp__head h3 { font-family:var(--font-display); font-size:var(--step-2); letter-spacing:-.02em; }
.qp__eyebrow { font-family:var(--font-mono); font-size:10px; text-transform:uppercase; letter-spacing:.14em; color:var(--brand-azure); margin-bottom:4px; }
.qp__opts { display:flex; flex-direction:column; gap:10px; }
.qp__opt { display:grid; grid-template-columns:56px 1fr auto; align-items:center; gap:14px; width:100%; text-align:left;
  padding:10px 14px 10px 10px; border-radius:var(--r-lg); background:var(--surface-2);
  border:1px solid var(--line); cursor:pointer;
  transition:border-color var(--dur), box-shadow var(--dur), transform var(--dur), background var(--dur); }
.qp__opt:hover, .qp__opt:focus-visible { border-color:var(--brand-azure); background:var(--surface);
  box-shadow:0 0 0 3px rgba(32,49,145,.16), var(--sh-2); transform:translateY(-1px); outline:none; }
.qp__opt:active { transform:scale(.985); }
.qp__thumb { display:flex; align-items:center; justify-content:center; width:56px; height:64px; border-radius:var(--r-md);
  background:linear-gradient(160deg,var(--n-50),var(--n-100)); overflow:hidden; }
.qp__thumb .vial-svg, .qp__thumb .vial-img, .qp__thumb img { height:58px; width:auto; object-fit:contain; }
.qp__size b { display:block; font-size:var(--step-1); font-weight:700; letter-spacing:-.02em; font-variant-numeric:tabular-nums; }
.qp__size small { font-family:var(--font-mono); font-size:10px; text-transform:uppercase; letter-spacing:.1em; color:var(--ink-3); }
.qp__price { display:inline-flex; align-items:center; gap:8px; font-weight:700; font-size:var(--step-1); letter-spacing:-.02em; font-variant-numeric:tabular-nums; color:var(--accent-ink); }
.qp__price svg { width:16px; height:16px; color:var(--brand-azure); opacity:0; transform:translateX(-4px); transition:opacity var(--dur), transform var(--dur); }
.qp__opt:hover .qp__price svg, .qp__opt:focus-visible .qp__price svg { opacity:1; transform:none; }
.qp__foot { margin-top:14px; padding-top:12px; border-top:1px solid var(--line); font-family:var(--font-mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-3); text-align:center; }
@media (max-width:560px){
  .qp { padding:0; align-items:flex-end; }
  .qp__card { width:100%; max-height:80vh; border-radius:var(--r-xl) var(--r-xl) 0 0; padding:18px 16px 12px;
    animation:qp-up .3s var(--ease-std); }
  @keyframes qp-up { from { transform:translateY(40px); opacity:.6; } to { transform:none; opacity:1; } }
}
@media (prefers-reduced-motion:reduce){ .qp__card { animation:none; } }


/* ---- research-library two-column: copy beside the alpha-helix canvas -------
   Mirrors .verify-cols, but on paper rather than the dark band. The visual
   column needs an explicit min-height because its child is an absolutely
   positioned canvas with no intrinsic size. */
.lib-cols { align-items:center; gap:clamp(28px,4.5vw,60px); }
.lib-visual { position:relative; min-height:clamp(320px,40vw,480px); }
.lib-visual canvas { position:absolute; inset:0; }
/* the same soft specimen light the hero uses, so the helix sits in a pool of
   brand colour instead of floating on flat paper */
.lib-visual::before {
  content:""; position:absolute; inset:0; margin:auto;
  width:min(380px,90%); aspect-ratio:1; border-radius:50%;
  background:radial-gradient(circle,rgba(147,197,253,.30),rgba(32,49,145,.13) 46%,transparent 68%);
  filter:blur(6px);
}
@media (max-width:800px){
  .lib-visual { min-height:230px; margin-top:8px; }
  .lib-cols { gap:22px; }
}

/* ---- grids that must never leave an orphan row ---------------------------
   .feature-grid uses auto-fit, which is right for a 3-card set but produces a
   3-column track at ~1000-1270px. Four cards then break 3 + 1, stranding one
   card beside two empty cells. These modifiers pin the column count to a
   divisor of the item count at every width, so the last row is always full. */
.feature-grid--4 { grid-template-columns:repeat(4,minmax(0,1fr)); }
@media (max-width:1180px){ .feature-grid--4 { grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (max-width:600px){  .feature-grid--4 { grid-template-columns:1fr; } }

.feature-grid--3 { grid-template-columns:repeat(3,minmax(0,1fr)); }
@media (max-width:900px){ .feature-grid--3 { grid-template-columns:1fr; } }

/* ---- BOGO strip ----------------------------------------------------------
   Pre-existing defect found during the 2026-07-27 re-skin: index.html ships
   the full .bogo-strip markup but NO stylesheet ever defined it, so the badge
   icon fell back to 100% width and rendered ~900px tall on the homepage.
   Verified against ontoplabs-snapshots/2026-07-27-spectrum-v1 - the snapshot
   has the same markup and the same zero rules, so this predates the re-skin.

   Styled in the board palette: a lavender-white plate held by a hairline,
   a periwinkle badge tile, and the signature gradient as a top rule. Navy
   carries every piece of text on it - the pastels are surface only. */
.bogo-strip-wrap { padding-block:8px 4px; }

.bogo-strip {
  position:relative; overflow:hidden; isolation:isolate;
  display:flex; align-items:center; gap:18px; flex-wrap:wrap;
  padding:16px 22px; border-radius:var(--r-lg);
  background:linear-gradient(180deg,var(--n-0),var(--accent-tint));
  box-shadow:var(--sh-border); color:var(--ink);
  transition:box-shadow var(--dur) var(--ease-std), transform var(--dur) var(--ease-std);
}
/* the signature gradient as a 2px top rule - the one place the full
   periwinkle-to-lavender sweep appears outside the hero */
.bogo-strip::before {
  content:""; position:absolute; inset:0 0 auto 0; height:2px;
  background:var(--brand-grad);
}
.bogo-strip:hover { transform:translateY(-1px); box-shadow:var(--sh-border), var(--sh-2); }
.bogo-strip:hover .bogo-strip__cta { gap:10px; }

/* a slow diagonal sheen, held well under the text so nothing loses contrast */
.bogo-strip__sheen {
  position:absolute; inset:0; z-index:-1; pointer-events:none;
  background:linear-gradient(104deg,transparent 30%,rgba(147,197,253,.30) 50%,transparent 70%);
  background-size:220% 100%; background-position:120% 0;
  transition:background-position 900ms var(--ease-move);
}
.bogo-strip:hover .bogo-strip__sheen { background-position:-40% 0; }
@media (prefers-reduced-motion:reduce){
  .bogo-strip__sheen { transition:none; }
  .bogo-strip:hover { transform:none; }
}

/* the badge: periwinkle tile, navy glyph. Measured 5.63:1 - the pastel can
   hold the navy icon, which is the whole contrast rule of this system. */
.bogo-strip__badge {
  flex:0 0 auto; display:grid; place-items:center;
  width:42px; height:42px; border-radius:var(--r-md);
  background:var(--pastel-periwinkle); color:var(--brand-ink);
}
.bogo-strip__badge svg { width:22px; height:22px; }

.bogo-strip__text { display:flex; flex-direction:column; gap:2px; min-width:0; flex:1 1 260px; }
.bogo-strip__text strong { font-family:var(--font-display); font-size:var(--step-1); font-weight:700; letter-spacing:-.015em; }
.bogo-strip__text strong em { font-style:normal; color:var(--accent-ink); }
.bogo-strip__text > span { color:var(--ink-3); font-size:var(--step--1); }

.bogo-strip__pills { display:flex; gap:8px; flex-wrap:wrap; }
.bogo-strip__pill {
  font-family:var(--font-mono); font-size:var(--step--2); letter-spacing:.04em;
  text-transform:uppercase; color:var(--ink-2);
  padding:5px 11px; border-radius:var(--r-pill);
  background:var(--n-0); box-shadow:var(--sh-border);
}

.bogo-strip__cta {
  flex:0 0 auto; display:inline-flex; align-items:center; gap:6px;
  font-weight:600; color:var(--accent-ink);
  transition:gap var(--dur) var(--ease-std);
}
.bogo-strip__cta svg { width:16px; height:16px; }

@media (max-width:900px){
  .bogo-strip { gap:14px; padding:14px 16px; }
  .bogo-strip__pills { order:3; width:100%; }
  .bogo-strip__cta { order:4; }
}

/* ---- brand pillars ("The On Top Labs Guarantee") --------------------------------
   The one place all five board pastels appear together. Each pillar sets
   --pillar and everything tinted in the card derives from it, so adding a
   sixth pillar is one inline custom property and nothing else.

   Contrast: --pillar is used ONLY as an icon fill, a top rule and a 14% tint.
   Every word in here is navy or navy-derived. Measured worst case, navy on the
   lightest pillar tint is 12.9:1. */
.pillars {
  display:grid; gap:16px;
  grid-template-columns:repeat(5,minmax(0,1fr));
}
/* 5 does not divide evenly at intermediate widths, so step 5 -> 3 -> 2 -> 1
   rather than letting auto-fit strand an orphan (see feature-grid--4 above) */
@media (max-width:1180px){ .pillars { grid-template-columns:repeat(3,minmax(0,1fr)); } }
@media (max-width:820px){  .pillars { grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (max-width:520px){  .pillars { grid-template-columns:1fr; } }

.pillar {
  position:relative; overflow:hidden;
  padding:22px 20px 24px; border-radius:var(--r-lg);
  background:var(--surface); box-shadow:var(--sh-border);
  transition:box-shadow var(--dur) var(--ease-std), transform var(--dur) var(--ease-std);
}
/* the colour rule along the top edge - the same device as the vial label band */
.pillar::before {
  content:""; position:absolute; inset:0 0 auto 0; height:3px; background:var(--pillar);
}
.pillar:hover { transform:translateY(-2px); box-shadow:var(--sh-border), var(--sh-2); }
@media (prefers-reduced-motion:reduce){ .pillar:hover { transform:none; } }

.pillar__icon {
  display:grid; place-items:center; width:40px; height:40px;
  border-radius:var(--r-md); margin-bottom:14px;
  background:var(--pillar); color:var(--brand-ink);
}
.pillar__icon svg { width:20px; height:20px; }

.pillar h3 {
  font-family:var(--font-display); font-size:var(--step-1); font-weight:700;
  letter-spacing:-.02em; margin-bottom:7px;
}
.pillar p { color:var(--ink-2); font-size:var(--step--1); line-height:1.62; }

/* ==========================================================================
   Researcher verification gate (assets/js/age-gate.js)
   Injected client-side after render - see the note at the top of that file for
   why it is not baked into the markup.
   ========================================================================== */
html.otl-gate-open, html.otl-gate-open body { overflow:hidden; }

.otl-gate {
  position:fixed; inset:0; z-index:9999;
  display:flex; align-items:center; justify-content:center; padding:20px;
  background:rgba(5,5,5,.72); backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px);
  animation:otlGateIn .18s ease-out;
}
@keyframes otlGateIn { from { opacity:0 } to { opacity:1 } }
@media (prefers-reduced-motion:reduce) { .otl-gate { animation:none } }

.otl-gate__card {
  width:100%; max-width:520px; background:var(--surface,#fff); color:var(--ink,#141414);
  border-radius:16px; padding:32px 30px 26px;
  box-shadow:0 24px 70px rgba(0,0,0,.35); text-align:left;
}
.otl-gate__mark {
  font-family:var(--font-display); font-weight:700; font-size:13px;
  letter-spacing:.16em; color:var(--brand,#203191); margin-bottom:18px;
}
.otl-gate__title { font-size:clamp(1.35rem,1.2rem + .8vw,1.7rem); margin:0 0 10px; }
.otl-gate__lead { color:var(--ink-3,#595959); font-size:.94rem; line-height:1.55; margin:0 0 22px; }

.otl-gate__check {
  display:flex; gap:11px; align-items:flex-start;
  padding:12px 13px; margin-bottom:10px; cursor:pointer;
  border:1px solid var(--line,#e5e5e5); border-radius:10px;
  font-size:.88rem; line-height:1.5; transition:border-color .15s, background .15s;
}
.otl-gate__check:hover { border-color:var(--brand,#203191); background:var(--surface-2,#fafafa); }
.otl-gate__check input { margin-top:2px; width:17px; height:17px; accent-color:var(--brand,#203191); flex:0 0 auto; }

.otl-gate__btn {
  width:100%; margin-top:14px; padding:14px 18px;
  font-family:var(--font-display); font-weight:600; font-size:.98rem; color:#fff;
  background:var(--brand,#203191); border:0; border-radius:10px; cursor:pointer;
  transition:background .15s, opacity .15s;
}
.otl-gate__btn:hover:not(:disabled) { background:#1a2878; }
.otl-gate__btn:disabled { opacity:.42; cursor:not-allowed; }

.otl-gate__fine { margin:16px 0 0; font-size:.72rem; line-height:1.55; color:var(--ink-faint,#8c8c8c); }
.otl-gate__fine a { color:var(--brand,#203191); }

@media (max-width:520px) { .otl-gate__card { padding:26px 20px 20px; } }