/* ---------- Brand typeface: IBM Plex Sans (SIL Open Font License 1.1) ----------
 * Self-hosted so no third-party request is made: keeps font-src 'self' and avoids sending visitor IPs to a CDN
 * (a GDPR issue for EU visitors). Variable weight 100-700; headings set at 800 clamp to 700.
 * Subsets load on demand: latin always, latin-ext and greek only when those characters appear (e.g. Thymosin β4). */
@font-face { font-family: "IBM Plex Sans"; font-style: normal; font-weight: 100 700; font-display: swap;
  src: url(/fonts/plex-sans-greek.woff2) format("woff2");
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF; }
@font-face { font-family: "IBM Plex Sans"; font-style: normal; font-weight: 100 700; font-display: swap;
  src: url(/fonts/plex-sans-latin-ext.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "IBM Plex Sans"; font-style: normal; font-weight: 100 700; font-display: swap;
  src: url(/fonts/plex-sans-latin.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

:root {
  --navy: #0b2540;                /* brand navy, taken from the logo */
  --navy-2: #17436e;
  --navy-3: #0e2c4b;
  /* Brand teal from the logo's apex node. Graphic use only — against white it sits at about 1.9:1,
     far under the 4.5:1 needed for body text, so text teal uses --signal instead. */
  --teal: #3fd0bf;
  --ink: #0f1f2e;
  --muted: #566b7d;
  --line: #dde5ec;
  --line-soft: #e9eff4;
  --bg: #f4f7fa;
  --card: #ffffff;
  --accent: #0a63e8;
  --accent-ink: #ffffff;
  --accent-hover: #0a52c2;
  --accent-soft: #eaf2fe;
  --signal: #0e8a7d;              /* scientific teal, used sparingly beside the blue */
  --ok: #0b7a3e;
  --ok-bg: #e6f5ec;
  --warn-bg: #ffd84d;
  --warn-ink: #1a1400;
  --radius: 14px;
  /* Layered shadows read as real depth; a hairline ring keeps edges crisp on light surfaces */
  --ring: 0 0 0 1px rgba(13,39,67,.07);
  --shadow: var(--ring), 0 1px 2px rgba(8,26,44,.04), 0 4px 10px -2px rgba(8,26,44,.05), 0 12px 28px -8px rgba(8,26,44,.08);
  --shadow-lg: var(--ring), 0 2px 4px rgba(8,26,44,.04), 0 10px 24px -6px rgba(8,26,44,.09), 0 28px 56px -16px rgba(8,26,44,.14);
  --font: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --display: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas, "Liberation Mono", monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font); color: var(--ink); line-height: 1.6; font-size: 16px;
  /* very subtle cool wash so large light areas aren't dead flat */
  background: var(--bg);
  background-image: radial-gradient(1200px 600px at 50% -200px, #ffffff 0%, rgba(255,255,255,0) 70%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1;
}
/* Numerals line up in prices, spec tables and data readouts */
.price-now, .tier-price, .co-totals, .specs dd, .data-table td, .coa-meta dd, .calc-out, .mono, .co-meta dd, .from strong
  { font-variant-numeric: tabular-nums; }
img, svg { display: block; max-width: 100%; }
a { color: var(--accent); }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 3px solid #ffb300; outline-offset: 2px; border-radius: 4px; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: -9999px; top: 0; background: #fff; padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; }
.compliance { background: linear-gradient(180deg, #ffe169, var(--warn-bg)); color: var(--warn-ink); font-weight: 800; font-size: 12px; letter-spacing: .055em; text-align: center; padding: 8px 16px; min-height: 32px; box-shadow: inset 0 -1px 0 rgba(26,20,0,.16); }
.nav { color: #fff; background: linear-gradient(180deg, var(--navy-3) 0%, var(--navy) 100%); box-shadow: 0 1px 0 rgba(255,255,255,.06) inset, 0 10px 30px -12px rgba(8,26,44,.5); }
.nav .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: flex; align-items: center; gap: 9px; color: #fff; text-decoration: none; }
.logo:hover { color: #fff; }
.logo-mark { display: block; flex: none; }
.logo-word { display: block; width: auto; height: 20px; }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; flex: 1; }
.nav-links > li { position: relative; }
.nav-links a, .nav-links button.dd-toggle { white-space: nowrap; color: #e6eef7; text-decoration: none; font: inherit; font-size: 14.5px; font-weight: 600; background: none; border: 0; padding: 10px 12px; border-radius: 8px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.nav-links a:hover, .nav-links button.dd-toggle:hover, .nav-links button[aria-expanded="true"] { background: var(--navy-2); color: #fff; }
.dd-menu { position: absolute; top: calc(100% + 6px); left: 0; min-width: 230px; background: #fff; border-radius: 10px; box-shadow: 0 12px 32px rgba(0,0,0,.18); padding: 6px; list-style: none; margin: 0; display: none; }
.dd-menu.open { display: block; }
.dd-menu a { display: block; color: var(--ink); padding: 9px 12px; border-radius: 6px; font-weight: 500; }
.dd-menu a:hover { background: var(--bg); color: var(--ink); }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.cart-btn { position: relative; background: var(--navy-2); color: #fff; border: 0; width: 44px; height: 44px; border-radius: 10px; cursor: pointer; display: grid; place-items: center; }
.cart-btn:hover { background: #1b4470; }
.cart-count { position: absolute; top: -4px; right: -4px; min-width: 20px; height: 20px; padding: 0 5px; border-radius: 10px; background: var(--warn-bg); color: var(--warn-ink); font-size: 12px; font-weight: 800; display: grid; place-items: center; }
.site-search { display: flex; align-items: center; height: 40px; background: var(--navy-2); border: 1.5px solid #2a4f78; border-radius: 10px; overflow: hidden; }
.site-search:focus-within { border-color: #ffb300; }
.site-search input { width: 190px; height: 100%; border: 0; background: transparent; color: #fff; font: inherit; font-size: 14px; padding: 0 4px 0 12px; }
.site-search input::placeholder { color: #a9bccf; }
.site-search input:focus-visible { outline: none; }
.site-search button { width: 40px; height: 100%; border: 0; background: none; color: #e6eef7; cursor: pointer; display: grid; place-items: center; }
.site-search button:hover { color: #fff; background: #1b4470; }
.menu-btn { display: none; background: none; border: 0; color: #fff; width: 44px; height: 44px; cursor: pointer; }

/* ---------- Breadcrumb ---------- */
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 14px 0; margin: 0; font-size: 13.5px; color: var(--muted); }
.breadcrumb li + li::before { content: "›"; margin-right: 6px; color: #8796a6; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; color: var(--ink); }
.breadcrumb [aria-current] { color: var(--ink); font-weight: 600; }

/* ---------- Hero ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 32px; padding-bottom: 40px; }
.card { position: relative; background: var(--card); border: 0; border-radius: var(--radius); box-shadow: var(--shadow); }
/* hairline top highlight: catches the light like a physical card edge */
.card::before { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,0) 40%); mix-blend-mode: overlay; }
.media { padding: 24px; position: sticky; top: 112px; align-self: start; }
.media-stage { position: relative; aspect-ratio: 1 / 1; border-radius: 10px; background: radial-gradient(circle at 50% 38%, #ffffff 0%, #e9eff5 70%); display: grid; place-items: center; overflow: hidden; }
.zoom-layer { position: absolute; inset: 0; display: grid; place-items: center; transform-origin: var(--zx, 50%) var(--zy, 50%); transition: transform .3s ease; }
.zoom-layer .view { grid-area: 1 / 1; opacity: 0; transition: opacity .35s ease, transform .4s ease; pointer-events: none; }
.zoom-layer .view.active { opacity: 1; }
.view-vial { height: 88%; width: auto; transform-origin: 52% 57%; }
.view-box { width: 84%; height: auto; }
.media-stage.closeup .view-vial { transform: scale(1.9); }
.zoom-hint { position: absolute; right: 12px; bottom: 12px; display: inline-flex; align-items: center; gap: 6px; background: rgba(11,31,51,.78); color: #fff; font-size: 12px; font-weight: 700; padding: 6px 10px; border-radius: 999px; opacity: .85; transition: opacity .2s; pointer-events: none; }
@media (hover: hover) and (pointer: fine) {
  .media-stage.zoomable { cursor: zoom-in; }
  .media-stage.zoomable:hover .zoom-layer { transform: scale(1.75); }
  .media-stage.zoomable:hover .zoom-hint { opacity: 0; }
}
@media (hover: none), (pointer: coarse) { .zoom-hint { display: none; } }
.purity-badge { position: absolute; z-index: 2; top: 14px; left: 14px; background: var(--ok); color: #fff; font-weight: 800; font-size: 13px; padding: 7px 12px; border-radius: 999px; display: inline-flex; gap: 6px; align-items: center; }
.thumbs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 14px; }
.thumbs button { position: relative; border: 2px solid var(--line); border-radius: 10px; background: radial-gradient(circle at 50% 40%, #fff 0%, #eaf0f6 80%); padding: 6px 6px 22px; cursor: pointer; aspect-ratio: 1 / 1; overflow: hidden; transition: border-color .15s, transform .15s, box-shadow .15s; }
.thumbs button:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(11,31,51,.1); }
.thumbs button[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(10,108,255,.15); }
.thumbs svg { width: 100%; height: 100%; }
.thumbs span { position: absolute; left: 0; right: 0; bottom: 4px; font-size: 11.5px; font-weight: 700; color: var(--muted); }
.thumbs button[aria-pressed="true"] span { color: var(--accent); }
.coa-link { margin-top: 16px; display: flex; align-items: center; justify-content: center; gap: 8px; padding: 12px; border: 1.5px dashed var(--ok); border-radius: 10px; color: var(--ok); font-weight: 700; text-decoration: none; background: var(--ok-bg); }
.coa-link:hover { color: #075c2e; background: #d7efe0; }

.buy { padding: 4px 0; }
.eyebrow { display: inline-flex; align-items: center; gap: 7px; text-transform: uppercase; font-size: 11.5px; font-weight: 800; letter-spacing: .11em; color: var(--accent); margin: 0 0 10px; }
.eyebrow::before { content: ""; width: 18px; height: 2px; border-radius: 1px; background: currentColor; opacity: .55; }
h1 { font-family: var(--display); font-size: clamp(27px, 3.3vw, 38px); line-height: 1.12; margin: 0 0 12px; letter-spacing: -.028em; font-weight: 800; text-wrap: balance; }
.subtitle { font-family: var(--mono); font-size: 13.5px; color: var(--muted); background: #eaf0f6; padding: 8px 12px; border-radius: 8px; display: inline-block; margin: 0 0 18px; }
.rating { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.price-now { font-size: 34px; font-weight: 800; letter-spacing: -.02em; margin: 0; min-height: 44px; }
.price-now small { font-size: 15px; font-weight: 600; color: var(--muted); }
.tier-matrix { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin: 14px 0 18px; }
.tier { position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: 4px; padding: 14px 14px 12px; text-align: left; font: inherit; color: var(--ink); background: #fff; border: 2px solid var(--line); border-radius: 12px; cursor: pointer; transition: border-color .15s, box-shadow .15s, transform .15s; }
.tier:hover { border-color: #9cbcf0; transform: translateY(-1px); }
.tier.active { border-color: var(--accent); background: #f2f7ff; box-shadow: 0 0 0 3px rgba(10,108,255,.14); }
.tier-label { font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.tier.active .tier-label { color: var(--accent); }
.tier-price { font-size: 22px; font-weight: 800; letter-spacing: -.01em; }
.tier-price small { font-size: 12.5px; font-weight: 600; color: var(--muted); margin-left: 2px; }
.tier-save { font-size: 12px; font-weight: 800; color: var(--ok); background: var(--ok-bg); padding: 2px 8px; border-radius: 999px; }
.tier-save.base { color: var(--muted); background: #eef2f6; }
.tier-sub { font-size: 12px; color: var(--muted); }
.tier-ribbon { position: absolute; top: -10px; right: 10px; background: var(--warn-bg); color: var(--warn-ink); font-size: 10.5px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; padding: 3px 8px; border-radius: 999px; }

/* Storage & purity status badges */
.status-badges { list-style: none; margin: 0 0 18px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.sbadge { display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px 7px 9px; border-radius: 999px; font-size: 13px; border: 1px solid; }
.sbadge strong { font-weight: 800; }
.sbadge svg { flex: none; }
.sb-frozen { background: #e8f2ff; border-color: #c6dcfb; color: #0b4fb3; }
.sb-fridge { background: #e6f6f4; border-color: #bfe6e1; color: #0b6b62; }
.sb-purity { background: var(--ok-bg); border-color: #bfe3cc; color: var(--ok); }
.status-badges.compact { margin-bottom: 14px; }
.status-badges.compact .sbadge { font-size: 12.5px; padding: 5px 10px 5px 8px; }
.sku-line { margin: 14px 0 0; font-size: 13px; color: var(--muted); }
.stock { display: flex; align-items: center; gap: 10px; color: var(--ok); font-weight: 700; margin: 0 0 18px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px rgba(11,122,62,.18); animation: pulse 2s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 7px rgba(11,122,62,.05); } }
.buy-form { padding: 20px; }
.qty-row { display: flex; gap: 12px; align-items: stretch; margin-bottom: 16px; }
.qty { display: inline-flex; border: 1.5px solid var(--line); border-radius: 10px; overflow: hidden; background: #fff; height: 52px; }
.qty button { width: 46px; border: 0; background: #f0f4f8; font-size: 22px; cursor: pointer; color: var(--ink); }
.qty button:hover { background: #e2e9f0; }
.qty input { width: 64px; border: 0; text-align: center; font: inherit; font-size: 18px; font-weight: 700; -moz-appearance: textfield; }
.qty input::-webkit-outer-spin-button, .qty input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.line-total { display: flex; flex-direction: column; justify-content: center; font-size: 13px; color: var(--muted); }
.line-total strong { font-size: 20px; color: var(--ink); min-width: 110px; }
.check { display: flex; gap: 12px; align-items: flex-start; padding: 14px; border: 1.5px solid var(--line); border-radius: 10px; background: #fafbfc; font-size: 14px; cursor: pointer; margin-bottom: 16px; }
.check input { width: 20px; height: 20px; margin: 1px 0 0; accent-color: var(--accent); flex: none; }
.check.error { border-color: #c62828; background: #fdecec; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; border: 0; border-radius: 11px; font: inherit; font-weight: 700; letter-spacing: -.005em; cursor: pointer; text-decoration: none; transition: transform .12s ease, box-shadow .18s ease, background .15s ease, border-color .15s ease; }
.btn:active { transform: translateY(1px); }
.btn-primary { width: 100%; height: 56px; font-size: 17px; color: var(--accent-ink);
  background: linear-gradient(180deg, #2a7bf4 0%, var(--accent) 55%, #0a58d2 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.28), 0 1px 2px rgba(8,26,44,.18), 0 8px 20px -6px rgba(10,99,232,.52); }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-primary[aria-disabled="true"] { background: #5b7290; box-shadow: none; cursor: not-allowed; }
.btn-ghost { background: #fff; color: var(--ink); border: 1.5px solid var(--line); padding: 11px 16px; box-shadow: 0 1px 2px rgba(8,26,44,.05); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.form-msg { min-height: 22px; margin: 10px 0 0; font-size: 14px; color: #c62828; font-weight: 600; }

/* ---------- Sections ---------- */
section.block { padding: 48px 0; }
h2 { font-family: var(--display); font-size: clamp(22px, 2.4vw, 29px); margin: 0 0 8px; letter-spacing: -.02em; font-weight: 800; line-height: 1.22; text-wrap: balance; }
h3 { letter-spacing: -.012em; }
.lead { color: var(--muted); margin: 0 0 24px; font-size: 16.5px; line-height: 1.65; max-width: 72ch; }

/* COA viewer */
.coa { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 0; overflow: hidden; }
.coa-side { padding: 24px; background: #f2f6fa; border-right: 1px solid var(--line); }
.coa-side label { display: block; font-weight: 700; font-size: 14px; margin-bottom: 6px; }
.coa-side select { width: 100%; height: 46px; font: inherit; padding: 0 12px; border: 1.5px solid var(--line); border-radius: 8px; background: #fff; }
.coa-meta { margin: 18px 0; display: grid; gap: 0; font-size: 14px; }
.coa-meta div { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px solid var(--line); }
.coa-meta dt { color: var(--muted); }
.coa-meta dd { margin: 0; font-weight: 700; font-family: var(--mono); font-size: 13.5px; }
.coa-actions { display: grid; gap: 10px; }
.btn-pdf { height: 48px; font-size: 15px; text-align: center; }
.btn-pdf.pdf-missing { background: #fff; color: var(--ink); border: 1.5px dashed #9aa9b8; box-shadow: none; }
.btn-pdf.pdf-missing:hover { border-color: var(--accent); color: var(--accent); }
.pdf-note { margin: 0; min-height: 0; font-size: 13px; color: #8a5300; }
.pdf-note:empty { display: none; }
.coa-main { padding: 24px; }
.coa-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }
.purity-big { font-size: 40px; font-weight: 800; color: var(--ok); line-height: 1; }
.chart-box { width: 100%; aspect-ratio: 720 / 260; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.chart-box svg { width: 100%; height: 100%; }
.coa-tests { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 14px; }
.coa-tests th, .coa-tests td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; }
.coa-tests th { color: var(--muted); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: .04em; }
.pass { color: var(--ok); font-weight: 800; }

/* Tabs */
.tabs { overflow: hidden; }
.tablist { display: flex; border-bottom: 1px solid var(--line); background: #f2f6fa; overflow-x: auto; }
.tablist button { flex: none; font: inherit; font-weight: 700; font-size: 15px; color: var(--muted); background: none; border: 0; padding: 16px 22px; cursor: pointer; border-bottom: 3px solid transparent; white-space: nowrap; }
.tablist button:hover { color: var(--ink); }
.tablist button[aria-selected="true"] { color: var(--accent); border-bottom-color: var(--accent); background: #fff; }
.tabpanel { padding: 28px; }
.tabpanel[hidden] { display: none; }
.tabpanel h3 { font-size: 19px; margin: 26px 0 8px; }
.tabpanel h3:first-child { margin-top: 0; }
.tabpanel p { margin: 0 0 12px; max-width: 78ch; }
.data-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.data-table th, .data-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table th { width: 32%; color: var(--muted); font-weight: 600; background: #fafbfc; }
.data-table th.grp { width: auto; background: #eef3f8; color: var(--ink); font-weight: 800; }
.data-table code, .mono { font-family: var(--mono); font-size: 14px; word-break: break-word; }
.ref { font-size: 13px; color: var(--muted); }
.callout { border-left: 4px solid var(--accent); background: #eef5ff; padding: 12px 16px; border-radius: 0 8px 8px 0; margin: 16px 0; font-size: 14.5px; }
.callout.warn { border-color: #b26b00; background: #fff6e5; }
.recon-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 24px; }
.calc { background: #f2f6fa; border-radius: 12px; padding: 20px; align-self: start; }
.calc-field { margin-top: 10px; }
.calc-field label { display: block; font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.calc-input { display: flex; align-items: stretch; height: 44px; border: 1.5px solid var(--line); border-radius: 8px; background: #fff; overflow: hidden; }
.calc-input:focus-within { border-color: var(--accent); }
.calc-input input { flex: 1; min-width: 0; border: 0; font: inherit; font-weight: 700; padding: 0 12px; -moz-appearance: textfield; }
.calc-input input:focus-visible { outline: none; }
.calc-input input::-webkit-outer-spin-button, .calc-input input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.calc-input input[aria-invalid="true"] { background: #fdecec; }
.calc-input span { display: grid; place-items: center; min-width: 48px; padding: 0 10px; background: #eef3f8; color: var(--muted); font-size: 13.5px; font-weight: 700; border-left: 1px solid var(--line); }
.calc-out { margin-top: 16px; padding: 16px; background: #fff; border: 1px solid var(--line); border-radius: 10px; display: grid; grid-template-columns: auto 1fr; align-items: baseline; column-gap: 10px; }
.co-label { grid-column: 1 / -1; font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.calc-out output { font-size: 28px; font-weight: 800; letter-spacing: -.02em; min-height: 38px; }
.co-ul { font-size: 15px; font-weight: 700; color: var(--muted); }
.co-meta { grid-column: 1 / -1; margin: 10px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.co-meta div { background: #f5f8fb; border-radius: 8px; padding: 8px 10px; }
.co-meta dt { font-size: 12px; color: var(--muted); }
.co-meta dd { margin: 0; font-weight: 800; font-size: 15px; }
.syringe-fig { margin: 14px 0 0; }
.syringe-fig svg { width: 100%; height: auto; display: block; }
#syrFill, #syrPlunger, #syrMark { transition: width .25s ease, transform .25s ease; }
.syringe-fig figcaption { font-size: 13.5px; color: var(--ink); margin-top: 4px; }
.calc-warn { margin: 10px 0 12px; min-height: 0; font-size: 13px; font-weight: 600; color: #8a5300; }
.calc-warn:empty { margin: 0 0 12px; }

/* Product overview ("What is …?") */
.overview { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 32px; padding: 28px; }
.overview h2 { margin-bottom: 12px; }
.ov-text p { margin: 0 0 14px; max-width: 75ch; }
.ov-text p:last-child { margin-bottom: 0; }
.ov-facts { background: #f2f6fa; border-radius: 10px; padding: 20px; align-self: start; }
.ov-facts h3 { font-size: 16px; margin: 0 0 12px; }
.check-list { list-style: none; padding: 0; margin: 0 0 14px; display: grid; gap: 10px; }
.check-list li { display: flex; gap: 10px; align-items: flex-start; }
.check-list svg { color: var(--ok); flex: none; margin-top: 3px; }
.check-list:last-child { margin-bottom: 0; }
@media (max-width: 860px) { .overview { grid-template-columns: 1fr; padding: 22px 18px; } }

/* Related */
.related { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.rel-card { display: flex; flex-direction: column; text-decoration: none; color: var(--ink); overflow: hidden; transition: transform .15s ease, box-shadow .15s ease; }
.rel-card:hover { transform: translateY(-3px); box-shadow: 0 10px 28px rgba(11,31,51,.12); color: var(--ink); }
.rel-card .thumb { aspect-ratio: 4 / 3; background: #eef3f8; display: grid; place-items: center; }
.rel-card .thumb svg { width: 46%; height: auto; }
.rel-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.rel-body .tag { font-size: 11.5px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); }
.rel-body h3 { font-size: 16px; margin: 0; }
.rel-body .meta { font-size: 13px; color: var(--muted); }
.rel-body .p { margin-top: auto; padding-top: 8px; font-weight: 800; font-size: 17px; }

/* Footer */
footer { background: var(--navy); color: #c5d2df; padding: 36px 0; margin-top: 40px; font-size: 13.5px; }
footer p { margin: 0 0 8px; max-width: 90ch; }
footer strong { color: #fff; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; list-style: none; padding: 0 0 18px; margin: 0 0 18px; border-bottom: 1px solid #23415f; }
.footer-links a { color: #fff; font-weight: 600; text-decoration: none; }
.footer-links a:hover { text-decoration: underline; color: #fff; }
.footer-ship { color: #fff; font-weight: 600; }
.footer-brand { display: inline-flex; align-items: center; gap: 11px; color: #fff; text-decoration: none; margin: 0 0 22px; }
.footer-brand .logo-word { height: 24px; }
.footer-tagline { align-self: center; padding-left: 12px; margin-left: 2px; border-left: 1px solid #2c4b6c; color: #9fb3c6; font-size: 11.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; }
@media (max-width: 560px) { .footer-tagline { display: none; } }

/* Cart drawer */
.scrim { position: fixed; inset: 0; background: rgba(5,15,25,.5); opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s; z-index: 80; }
.scrim.open { opacity: 1; visibility: visible; }
.drawer { position: fixed; top: 0; right: 0; height: 100%; width: min(420px, 100%); background: #fff; z-index: 90; transform: translateX(100%); transition: transform .3s ease; display: flex; flex-direction: column; box-shadow: -10px 0 40px rgba(0,0,0,.2); }
.drawer.open { transform: translateX(0); }
.drawer-head { display: flex; justify-content: space-between; align-items: center; padding: 18px 20px; border-bottom: 1px solid var(--line); }
.drawer-head h2 { font-size: 20px; margin: 0; }
.icon-btn { background: none; border: 0; width: 40px; height: 40px; border-radius: 8px; cursor: pointer; display: grid; place-items: center; color: var(--ink); }
.icon-btn:hover { background: var(--bg); }
.drawer-body { flex: 1; overflow-y: auto; padding: 8px 20px; }
.cart-item { display: grid; grid-template-columns: 56px 1fr auto; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); align-items: center; }
.cart-item .ci-thumb { --cap: #5b7290; width: 56px; height: 56px; background: #eef3f8; border-radius: 8px; display: grid; place-items: center; }
.cart-item h3 { font-size: 15px; margin: 0 0 2px; }
.cart-item .ci-meta { font-size: 13px; color: var(--muted); }
.cart-item .ci-remove { background: none; border: 0; color: #c62828; font: inherit; font-size: 13px; cursor: pointer; padding: 0; text-decoration: underline; }
.empty { text-align: center; color: var(--muted); padding: 48px 0; }
.drawer-foot { border-top: 1px solid var(--line); padding: 18px 20px; }
.drawer-foot .btn.is-disabled { background: #b8c4d0; box-shadow: none; pointer-events: none; }
.subtotal { display: flex; justify-content: space-between; font-size: 18px; font-weight: 800; margin-bottom: 12px; }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, calc(100% + 40px)); visibility: hidden; background: var(--navy); color: #fff; padding: 12px 18px; border-radius: 10px; font-weight: 600; z-index: 95; transition: transform .3s ease, visibility .3s; box-shadow: var(--shadow); }
.toast.show { transform: translate(-50%, 0); visibility: visible; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  /* header collapses into the menu button */
  .menu-btn { display: grid; place-items: center; }
  .nav .wrap { gap: 12px; }
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; background: var(--navy); padding: 8px 16px 16px; border-top: 1px solid var(--navy-2); }
  .nav-links.open { display: flex; }
  .nav-links a, .nav-links button.dd-toggle { width: 100%; justify-content: space-between; }
  .dd-menu { position: static; box-shadow: none; background: var(--navy-2); }
  .dd-menu a { color: #e6eef7; }
  .dd-menu a:hover { background: #1b4470; color: #fff; }
  .nav-actions { margin-left: auto; }
  .related { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .coa { grid-template-columns: 1fr; }
  .coa-side { border-right: 0; border-bottom: 1px solid var(--line); }
}
@media (max-width: 1100px) {
  .site-search input { width: 130px; }
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .media { position: static; }
  .recon-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .nav .wrap { flex-wrap: wrap; height: auto; min-height: 64px; padding-top: 10px; padding-bottom: 10px; row-gap: 10px; }
  .nav-actions { display: contents; }
  .cart-btn { margin-left: auto; }
  .site-search { order: 3; flex: 1 0 100%; }
  .site-search input { width: 100%; }
}
@media (max-width: 520px) {
  .compliance { font-size: 11px; }
  /* related products stay two-up on phones, matching the catalog grid */
  .tier-matrix { gap: 8px; }
  .tier { padding: 12px 10px 10px; }
  .tier-price { font-size: 18px; }
  .tier-save { font-size: 11px; padding: 2px 6px; }
  .tabpanel { padding: 20px 16px; }
  .data-table th { width: 40%; }
  .qty-row { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
.profile-link { margin: 14px 0 0; font-size: 14px; font-weight: 600; }

/* ---------- Signature chromatogram motif ----------
   The purity trace used as a brand element. Decorative; draws itself once on load, then holds. */
.chroma { display: block; width: 100%; height: auto; overflow: visible; }
.chroma path { fill: none; stroke: currentColor; stroke-width: 1.6; vector-effect: non-scaling-stroke;
  stroke-linecap: round; stroke-linejoin: round; }
@media (prefers-reduced-motion: no-preference) {
  .chroma path { stroke-dasharray: 1400; stroke-dashoffset: 1400; animation: chroma-draw 2.4s .15s cubic-bezier(.22,.61,.36,1) forwards; }
}
@keyframes chroma-draw { to { stroke-dashoffset: 0; } }

/* ---------- Scroll reveal ----------
   CSS-only (no JS, so no CSP hash). Browsers without scroll-driven animations just show content normally. */
@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .reveal > * { animation: reveal-up linear both; animation-timeline: view(); animation-range: entry 0% entry 55%; }
  }
}
@keyframes reveal-up { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

/* ---------- Analytics consent bar ----------
   Fixed to the bottom so it never pushes layout; hidden attribute controls visibility. */
.consent[hidden] { display: none; }
.consent { position: fixed; z-index: 70; left: 12px; right: 12px; bottom: 12px; margin: 0 auto; max-width: 760px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  background: var(--navy); color: #d7e2ee; padding: 14px 18px; border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(2,6,23,.4); font-size: 13.5px; }
.consent-copy { margin: 0; flex: 1 1 320px; line-height: 1.5; }
.consent-copy a { color: #fff; }
.consent-actions { display: flex; gap: 8px; flex: 0 0 auto; margin-left: auto; }
.consent-actions .btn { height: 38px; padding: 0 16px; font-size: 14px; }
.consent-actions .btn-ghost { background: transparent; color: #fff; border-color: #35557a; }
.consent-actions .btn-ghost:hover { background: var(--navy-2); color: #fff; }
@media (max-width: 560px) { .consent-actions { width: 100%; margin-left: 0; } .consent-actions .btn { flex: 1; } }