/* ---------- Supporting pages: about, how-to-order, coa-verification, contact (appended after product.css) ---------- */
.page-hero { padding: 20px 0 8px; }
.page-hero h1 { font-size: clamp(30px, 4.2vw, 44px); max-width: 24ch; margin-bottom: 14px; }
.page-hero .lead { font-size: 17px; max-width: 70ch; margin: 0; }
.prose { max-width: 78ch; }
.prose p { margin: 0 0 14px; }
.prose h3 { font-size: 19px; margin: 24px 0 8px; }
.two-col { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 28px; align-items: start; }
.panel { padding: 24px; }
.panel h2, .panel h3 { margin-top: 0; }

/* Trust grid (about) */
.trust-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.trust-card { padding: 22px; display: flex; flex-direction: column; gap: 10px; }
.trust-card { transition: transform .16s ease, box-shadow .2s ease; }
.trust-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.trust-card .icon { width: 50px; height: 50px; border-radius: 14px; color: #fff; display: grid; place-items: center;
  background: linear-gradient(160deg, #2a7bf4, var(--accent) 55%, #0a4fbd);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.35), 0 6px 14px -4px rgba(10,99,232,.5); }
.trust-card h3 { font-size: 17px; margin: 0; }
.trust-card p { margin: 0; font-size: 14.5px; color: var(--muted); }
.stat-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 22px; }
.stat { padding: 18px 20px; }
.stat strong { display: block; font-size: 30px; letter-spacing: -.02em; color: var(--navy); }
.stat span { font-size: 14px; color: var(--muted); }

/* Steps (how to order) */
.steps { list-style: none; counter-reset: step; padding: 0; margin: 0; display: grid; gap: 18px; }
.step { counter-increment: step; display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 18px; padding: 22px; }
/* .step sits on a .card, and an element has only one ::before — so this rule and .card::before (the absolutely
   positioned gloss highlight) are the same box. position/inset/mix-blend-mode must be reset here, or the counter
   is taken out of the grid and the step's text collapses into the 56px number column. */
.step::before { content: counter(step); position: static; inset: auto; mix-blend-mode: normal;
  width: 56px; height: 56px; border-radius: 50%; background: var(--navy); color: #fff; font-size: 22px; font-weight: 800; display: grid; place-items: center; }
.step h3 { font-size: 19px; margin: 4px 0 8px; }
.step p { margin: 0 0 10px; }
.step p:last-child { margin-bottom: 0; }
.pay-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-top: 12px; }
.pay { border: 1.5px solid var(--line); border-radius: 10px; padding: 12px; background: #fafbfc; font-size: 14px; }
.pay strong { display: block; font-size: 15px; }
.pay span { color: var(--muted); font-size: 13px; }

/* FAQ accordion (native <details>) */
.faq { display: grid; gap: 10px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
.faq summary { list-style: none; cursor: pointer; padding: 16px 48px 16px 18px; font-weight: 700; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 20px; top: 50%; width: 10px; height: 10px; border-right: 2.5px solid var(--muted); border-bottom: 2.5px solid var(--muted); transform: translateY(-70%) rotate(45deg); transition: transform .2s; }
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq summary:hover { color: var(--accent); }
.faq .answer { padding: 0 18px 16px; color: var(--ink); }
.faq .answer p { margin: 0 0 10px; }
.faq .answer p:last-child { margin: 0; }

/* COA hub */
.batch-search { margin-top: 24px; padding: 22px; }
.batch-search label { display: block; font-weight: 800; margin-bottom: 8px; }
.batch-search .row { display: flex; gap: 10px; }
.batch-search .cat-search { max-width: none; flex: 1; }
.batch-search .cat-search input { height: 54px; font-size: 17px; }
.batch-search .btn-primary { width: auto; height: 54px; padding: 0 26px; font-size: 16px; }
.batch-status { margin: 12px 0 0; min-height: 24px; font-size: 15px; }
.batch-status.found { color: var(--ok); font-weight: 700; }
.batch-status.miss { color: #b3261e; font-weight: 600; }
.coa-grid { list-style: none; margin: 22px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.coa-grid > li[hidden] { display: none; }
.coa-card { padding: 20px; display: flex; flex-direction: column; gap: 12px; height: 100%; }
.coa-card.match { outline: 3px solid var(--ok); outline-offset: -1px; }
.coa-card header { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.coa-card h3 { font-size: 18px; margin: 0; }
.coa-card h3 a { color: var(--ink); text-decoration: none; }
.coa-card h3 a:hover { color: var(--accent); text-decoration: underline; }
.coa-card .cas { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.coa-card .pur { font-size: 24px; font-weight: 800; color: var(--ok); white-space: nowrap; }
.coa-card select { width: 100%; height: 44px; font: inherit; padding: 0 10px; border: 1.5px solid var(--line); border-radius: 8px; background: #fff; }
.coa-card .chart-box { aspect-ratio: 720 / 260; }
.coa-card .coa-meta { margin: 0; }
.coa-card .coa-meta div { padding: 6px 0; }
.coa-card .btns { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: auto; }
.coa-card .btns .btn { height: 46px; font-size: 14px; padding: 0 10px; text-align: center; line-height: 1.15; }
.coa-card .btns .pdf-note { grid-column: 1 / -1; }

/* Contact */
.form-grid { display: grid; gap: 16px; }
.field label { display: block; font-weight: 700; font-size: 14.5px; margin-bottom: 6px; }
.field .req { color: #b3261e; }
.field input, .field select, .field textarea { width: 100%; font: inherit; padding: 11px 12px; border: 1.5px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); }
.field input, .field select { height: 48px; padding-top: 0; padding-bottom: 0; }
.field textarea { min-height: 160px; resize: vertical; }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { border-color: var(--accent); }
.field [aria-invalid="true"] { border-color: #b3261e; background: #fdecec; }
.field .hint { font-size: 13px; color: var(--muted); margin: 6px 0 0; min-height: 18px; }
.field .hint.warn { color: #8a5300; }
.field .err { font-size: 13px; color: #b3261e; font-weight: 600; margin: 6px 0 0; min-height: 18px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.sla dl { margin: 0; display: grid; gap: 0; }
.sla dl div { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.sla dt { color: var(--muted); }
.sla dd { margin: 0; font-weight: 700; text-align: right; }
.sla .badge-time { display: inline-flex; align-items: center; gap: 8px; background: var(--ok-bg); color: var(--ok); font-weight: 800; padding: 8px 12px; border-radius: 999px; margin-bottom: 14px; }

/* Legal / policy pages */
.effective { margin: 14px 0 0; font-size: 14px; color: var(--muted); font-weight: 600; }
.legal { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 28px; align-items: start; }
.toc { position: sticky; top: 112px; padding: 18px 20px; }
.toc h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 10px; }
.toc ol { margin: 0; padding-left: 18px; display: grid; gap: 6px; font-size: 14px; }
.toc a { color: var(--ink); text-decoration: none; }
.toc a:hover { color: var(--accent); text-decoration: underline; }
.legal-doc { padding: 28px 32px; max-width: 860px; }
.legal-doc section + section { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--line); }
.legal-doc h2 { font-size: 21px; margin: 0 0 10px; scroll-margin-top: 120px; }
.legal-doc p, .legal-doc li { max-width: 75ch; }
.legal-doc p { margin: 0 0 12px; }
.legal-doc ul { margin: 0 0 12px; padding-left: 20px; display: grid; gap: 6px; }
.legal-doc p:last-child, .legal-doc ul:last-child { margin-bottom: 0; }
.notice-box { border-left: 4px solid #b26b00; background: #fff6e5; padding: 12px 16px; border-radius: 0 8px 8px 0; }
.table-scroll { overflow-x: auto; margin-top: 4px; }
.table-scroll .data-table { min-width: 560px; }
.table-scroll .data-table th { width: auto; }
main > .callout { margin: 20px 0 0; }
@media (max-width: 860px) {
  .legal { grid-template-columns: minmax(0, 1fr); }
  .toc { position: static; }
  .legal-doc { padding: 22px 18px; }
  .legal-doc h2 { scroll-margin-top: 170px; }
}

/* Checkout */
.checkout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 28px; align-items: start; }
.checkout [hidden] { display: none !important; }
.co-form fieldset { border: 0; margin: 0 0 22px; padding: 0 0 22px; border-bottom: 1px solid var(--line); min-width: 0; }
.co-form fieldset:last-of-type { border-bottom: 0; padding-bottom: 0; }
.co-form legend { font-size: 18px; font-weight: 800; margin-bottom: 14px; padding: 0; }
.form-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 16px; }
.field .opt { font-weight: 500; color: var(--muted); font-size: 13px; }
.field .err:empty, .field .hint:empty { min-height: 0; }
.co-form .err { font-size: 13px; color: #b3261e; font-weight: 600; margin: 4px 0 0; }
.co-form .check { margin-bottom: 4px; }
.co-form .check.error, .field.error input, .field.error select { border-color: #b3261e; }
.pay-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-bottom: 14px; }
.pay-option { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 10px; cursor: pointer; background: #fff; }
.pay-option:has(input:checked) { border-color: var(--accent); background: #f2f7ff; box-shadow: 0 0 0 3px rgba(10,108,255,.12); }
.pay-option input { margin-top: 3px; accent-color: var(--accent); width: 18px; height: 18px; flex: none; }
.pay-option strong { display: block; font-size: 15px; }
.pay-option small { color: var(--muted); font-size: 13px; }
.co-form .btn-primary { margin-top: 18px; }
.co-fail { margin: 12px 0 0; font-size: 14px; font-weight: 600; color: #b3261e; }
.co-fail:empty { display: none; }
.co-summary { position: sticky; top: 112px; }
.co-summary h2 { font-size: 20px; margin: 0 0 12px; }
.co-items { list-style: none; margin: 0; padding: 0; }
.co-items li { --cap: #5b7290; display: grid; grid-template-columns: 30px 1fr auto; gap: 12px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.co-items strong { display: block; font-size: 14.5px; }
.co-items span { font-size: 13px; color: var(--muted); }
.co-items em { font-style: normal; color: var(--ok); font-weight: 700; }
.co-items b { font-size: 15px; }
.co-loading { color: var(--muted); }
.co-totals { margin: 12px 0 0; }
.co-totals div { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; font-size: 14.5px; }
.co-totals dt { color: var(--muted); }
.co-totals dd { margin: 0; font-weight: 700; text-align: right; }
.co-totals .co-total { border-top: 2px solid var(--ink); margin-top: 6px; padding-top: 12px; font-size: 18px; }
.co-totals .co-total dt { color: var(--ink); font-weight: 800; }
.co-edit { width: 100%; height: 44px; margin-top: 14px; }
.co-empty, .co-success { grid-column: 1 / -1; text-align: center; padding: 44px 24px; }
.co-success { border: 2px solid var(--ok); }
.co-success-icon { display: inline-grid; place-items: center; width: 64px; height: 64px; border-radius: 50%; background: var(--ok-bg); color: var(--ok); margin-bottom: 12px; }
.co-success-icon svg { width: 30px; height: 30px; }
[tabindex="-1"]:focus { outline: none; }
.co-success h2 { font-size: 30px; margin: 0 0 10px; color: var(--ok); }
.co-success-msg { font-size: 17px; max-width: 62ch; margin: 0 auto 20px; }
.co-ref { display: inline-grid; grid-template-columns: repeat(3, auto); gap: 8px 28px; margin: 0 auto 18px; padding: 16px 22px; background: #f5f8fb; border-radius: 10px; text-align: left; }
.co-ref dt { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; font-weight: 700; }
.co-ref dd { margin: 2px 0 0; font-weight: 800; font-family: var(--mono); font-size: 14.5px; }
.co-success .cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 18px; }
.co-success .cta-row .btn { height: 48px; }
@media (max-width: 1000px) {
  .checkout { grid-template-columns: 1fr; }
  .co-summary { position: static; order: -1; }
}
@media (max-width: 640px) {
  .form-grid.two, .pay-options { grid-template-columns: 1fr; }
  .co-ref { grid-template-columns: 1fr; }
}
@media (max-width: 1000px) {
  .trust-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pay-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .two-col { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .coa-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .trust-grid, .stat-row { grid-template-columns: 1fr; }
  .step { grid-template-columns: 1fr; gap: 10px; }
  .step::before { width: 44px; height: 44px; font-size: 18px; }
  .batch-search .row { flex-direction: column; }
  .batch-search .btn-primary { width: 100%; }
}

/* Research blog */
.post-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.post-card { position: relative; display: flex; flex-direction: column; gap: 10px; padding: 24px; transition: transform .15s ease, box-shadow .15s ease, border-color .15s; }
.post-card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 10px 28px rgba(11,31,51,.12); }
.post-cat { margin: 0; font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .07em; color: var(--accent); }
.post-title { font-size: 21px; line-height: 1.25; margin: 0; }
.post-title a { color: var(--ink); text-decoration: none; }
.post-title a::after { content: ""; position: absolute; inset: 0; }   /* whole card is clickable */
.post-title a:focus-visible { outline: none; }
.post-card:focus-within { outline: 3px solid #ffb300; outline-offset: 2px; }
.post-summary { margin: 0; color: var(--muted); }
.post-more { margin-top: auto; font-weight: 800; text-decoration: none; }
.post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin: 0; font-size: 13.5px; color: var(--muted); }
.post-head .post-meta { margin-top: 16px; font-size: 14.5px; }
.author-tag { display: inline-flex; align-items: center; gap: 6px; background: var(--ok-bg); color: var(--ok); font-weight: 700; padding: 3px 10px 3px 7px; border-radius: 999px; }
.author-tag svg { width: 13px; height: 13px; }
.post-head + .callout { margin: 20px 0 0; }
.post-body h2 { font-size: 23px; }
.post-body p, .post-body li { font-size: 16.5px; line-height: 1.7; }
.post-body ol { margin: 0 0 12px; padding-left: 22px; display: grid; gap: 8px; }
.post-body .formula { font-family: var(--mono); font-size: 15px; background: #eef3f8; border-left: 4px solid var(--accent); padding: 12px 16px; border-radius: 0 8px 8px 0; }
.post-body .data-table caption { caption-side: top; text-align: left; font-weight: 700; font-size: 14px; color: var(--muted); padding-bottom: 8px; }
.post-body a { font-weight: 600; }
.check-list-plain { list-style: none; padding: 0 !important; }
.check-list-plain li { padding-left: 26px; position: relative; }
.check-list-plain li::before { content: "✓"; position: absolute; left: 4px; color: var(--ok); font-weight: 800; }
.author-box { display: flex; gap: 14px; align-items: flex-start; margin-top: 28px; padding: 18px; background: #f2f6fa; border-radius: 12px; }
.author-avatar { flex: none; width: 44px; height: 44px; border-radius: 50%; background: var(--navy); color: #fff; display: grid; place-items: center; }
.author-name { margin: 0 0 4px !important; font-weight: 800; }
.author-box p { font-size: 14.5px !important; margin: 0; }
@media (max-width: 760px) { .post-grid { grid-template-columns: 1fr; } }

/* Compound library & reviews */
.profile-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip-link { display: inline-flex; align-items: center; padding: 9px 16px; border: 1.5px solid var(--line); border-radius: 999px; background: #fff; color: var(--ink); font-weight: 700; text-decoration: none; }
.chip-link:hover { border-color: var(--accent); color: var(--accent); }
a.auto-link { text-decoration-style: dotted; text-underline-offset: 3px; }
.stars { margin: 0; color: #c98a00; font-size: 18px; letter-spacing: 2px; }
.post-card blockquote { margin: 0; }
.post-card figcaption { font-size: 13px; color: var(--muted); }

/* Standalone reconstitution calculator */
.calc-page { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 28px; align-items: start; }
.calc-page .calc { padding: 24px; border: 1px solid var(--line); box-shadow: var(--shadow); background: #f7fafc; }
.calc-page .calc h2 { font-size: 22px; }
.calc-presets { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.calc-chip { font: inherit; font-size: 13px; font-weight: 700; padding: 5px 11px; border: 1.5px solid var(--line); border-radius: 999px; background: #fff; color: var(--ink); cursor: pointer; }
.calc-chip:hover { border-color: var(--accent); color: var(--accent); }
.calc-chip[aria-pressed="true"] { background: var(--navy); border-color: var(--navy); color: #fff; }
.calc-explain h2 { font-size: 22px; margin-top: 0; }
.calc-explain .formula { font-family: var(--mono); font-size: 14.5px; background: #eef3f8; border-left: 4px solid var(--accent); padding: 10px 14px; border-radius: 0 8px 8px 0; }
/* minmax(0, 1fr), not 1fr: a bare 1fr track is minmax(auto, 1fr) and refuses to shrink below its content,
   so the 560px-wide .table-scroll table stretched the column and gave the whole page horizontal scroll. */
@media (max-width: 1000px) { .calc-page { grid-template-columns: minmax(0, 1fr); } }

/* Alternative designations list (compound profiles) */
.designations { columns: 2; column-gap: 28px; }
.designations li { break-inside: avoid; }
@media (max-width: 640px) { .designations { columns: 1; } }

/* Author photos */
.author-photo { flex: none; width: 64px; height: 64px; border-radius: 50%; object-fit: cover; }
.prose .author-photo { width: 96px; height: 96px; float: right; margin: 0 0 12px 16px; }
a.author-tag { text-decoration: none; }
a.author-tag:hover { text-decoration: underline; }

/* Laboratory photography */
.lab-hero { margin: 8px 0 0; }
.lab-hero picture, .lab-figure picture { display: block; }
.lab-hero img, .lab-figure img { width: 100%; height: auto; border-radius: var(--radius); box-shadow: var(--shadow-lg); object-fit: cover; }
.lab-hero figcaption { margin-top: 12px; font-size: 14px; color: var(--muted); max-width: 70ch; }
.lab-figure { margin: 0; }
.lab-split { align-items: center; }
@media (max-width: 1000px) { .lab-split .lab-figure { order: -1; } }