/* APIChemX — site styles
   Layout concept: cinematic ink bands (hero, radiopharma, footer) alternate with quiet laboratory-paper bands;
   huge light-weight display type, mono data labels, bento tiles for the three supply verticals. */
:root {
  --ink: #070a0c;
  --ink-2: #0f171b;
  --ink-3: #16222a;
  --paper: #f1f4f1;
  --paper-2: #e3eae6;
  --card: #ffffff;
  --fg: #0b1215;
  --fg-2: #4b5b5d;
  --line: rgba(11, 18, 21, .13);
  --on-dark: #edf3f0;
  --on-dark-2: #94a6a3;
  --line-dark: rgba(237, 243, 240, .13);
  --teal: #0d7c66;
  --teal-ink: #0a6654;
  --mint: #a9ecd1;
  --mint-ink: #0b3b30;
  --amber: #f0a33a;
  --amber-ink: #3d2603;
  --danger: #c2412d;
  --display: "Geist", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --body: "Geist", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --r: 18px;
  --r-sm: 10px;
  --wrap: 1320px;
  --gutter: clamp(16px, 4vw, 48px);
  --header-h: 72px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0b1013; --paper-2: #101a1d; --card: #131d21; --fg: #e7eeeb; --fg-2: #9badaa; --line: rgba(231, 238, 235, .13);
    --teal: #3cc59f; --teal-ink: #6fd8b9; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0b1013; --paper-2: #101a1d; --card: #131d21; --fg: #e7eeeb; --fg-2: #9badaa; --line: rgba(231, 238, 235, .13);
  --teal: #3cc59f; --teal-ink: #6fd8b9; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--fg); font: 400 17px/1.6 var(--body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, svg, canvas { max-width: 100%; display: block; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 6px; }
.dark :focus-visible { outline-color: var(--mint); }
::selection { background: var(--mint); color: var(--mint-ink); }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--mint); color: var(--mint-ink); padding: 10px 16px; border-radius: 999px; }
.skip:focus { top: 12px; }

/* ---------- layout */
.wrap { max-width: var(--wrap); margin: 0 auto; padding-left: max(var(--gutter), env(safe-area-inset-left, 0px)); padding-right: max(var(--gutter), env(safe-area-inset-right, 0px)); }
.band { padding-block: clamp(72px, 10vw, 140px); position: relative; }
.band.tight { padding-block: clamp(48px, 6vw, 84px); }
.dark { background: var(--ink); color: var(--on-dark); --fg-2: var(--on-dark-2); --line: var(--line-dark); }
.alt { background: var(--paper-2); }
.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.split > * { min-width: 0; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
@media (max-width: 1000px) { .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 760px) { .split, .g2, .g3, .g4 { grid-template-columns: minmax(0, 1fr); } }

/* ---------- type */
h1, h2, h3, h4 { font-family: var(--display); margin: 0; text-wrap: balance; }
.display { font-weight: 250; font-size: clamp(52px, 10.4vw, 164px); line-height: .9; letter-spacing: -.055em; }
.h1 { font-weight: 280; font-size: clamp(44px, 7.2vw, 112px); line-height: .95; letter-spacing: -.045em; }
.h2 { font-weight: 300; font-size: clamp(34px, 5vw, 72px); line-height: 1; letter-spacing: -.035em; }
.h3 { font-weight: 400; font-size: clamp(22px, 2.1vw, 28px); line-height: 1.15; letter-spacing: -.015em; }
.h4 { font-weight: 500; font-size: 18px; line-height: 1.3; letter-spacing: -.005em; }
.lead { font-size: clamp(18px, 1.6vw, 22px); line-height: 1.5; color: var(--fg-2); max-width: 60ch; margin: 0; font-weight: 350; }
p { margin: 0; }
.muted { color: var(--fg-2); }
.small { font-size: 14px; line-height: 1.55; }
.mono { font-family: var(--mono); font-feature-settings: "zero"; }
.num { font-variant-numeric: tabular-nums; }
.eyebrow { font: 500 12px/1.2 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--teal); display: inline-flex; align-items: center; gap: 14px; }
.eyebrow::before { content: ""; width: 36px; height: 1px; background: currentColor; opacity: .7; }
.dark .eyebrow { color: var(--mint); }
.eyebrow.amber { color: var(--amber); }
.soft { color: var(--fg-2); }
.dark .soft { color: var(--on-dark-2); }
.accent { color: var(--teal); }
.dark .accent { color: var(--mint); }
.head { display: grid; gap: 22px; margin-bottom: clamp(40px, 5vw, 72px); max-width: 980px; }
.head.center { margin-inline: auto; text-align: center; justify-items: center; }
.head-row { display: flex; justify-content: space-between; align-items: end; gap: 32px; flex-wrap: wrap; margin-bottom: clamp(40px, 5vw, 64px); }
.head-row .head { margin-bottom: 0; }
.prose p + p { margin-top: 1em; }
.prose { max-width: 66ch; }

/* ---------- buttons */
.btn { --b: var(--fg); display: inline-flex; align-items: center; gap: 10px; height: 50px; padding: 0 22px; border-radius: 999px; border: 1px solid var(--line); background: transparent; color: var(--fg);
  text-decoration: none; font-weight: 500; font-size: 15px; letter-spacing: -.005em; cursor: pointer; white-space: nowrap; transition: background .2s, color .2s, border-color .2s, transform .2s; }
.btn:hover { border-color: var(--fg); }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn.solid { background: var(--fg); color: var(--paper); border-color: var(--fg); }
.btn.solid:hover { background: var(--teal); border-color: var(--teal); color: #fff; }
.btn.mint { background: var(--mint); color: var(--mint-ink); border-color: var(--mint); }
.btn.mint:hover { background: #c6f5e2; border-color: #c6f5e2; }
.dark .btn, .hero .btn { color: var(--on-dark); border-color: var(--line-dark); }
.dark .btn:hover, .hero .btn:hover { border-color: var(--on-dark); }
.dark .btn.mint, .hero .btn.mint { color: var(--mint-ink); border-color: var(--mint); }
.dark .btn.solid, .hero .btn.solid { background: var(--on-dark); color: var(--ink); border-color: var(--on-dark); }
.btn.sm { height: 40px; padding: 0 16px; font-size: 14px; }
.btn.lg { height: 58px; padding: 0 28px; font-size: 16px; }
.btn.block { width: 100%; justify-content: center; }
.link { display: inline-flex; gap: 8px; align-items: center; color: var(--teal); font-weight: 500; text-decoration: none; font-size: 15px; }
.link svg { width: 16px; height: 16px; transition: transform .2s; }
.link:hover svg { transform: translateX(4px); }
.dark .link, .hero .link { color: var(--mint); }

/* ---------- header */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 60; background: var(--ink); }
.site-head { position: fixed; top: env(safe-area-inset-top, 0px); left: 0; right: 0; z-index: 50; height: var(--header-h); color: var(--on-dark); transition: background .3s, border-color .3s; border-bottom: 1px solid transparent; }
.site-head.solid { background: rgba(7, 10, 12, .82); backdrop-filter: blur(14px) saturate(1.3); -webkit-backdrop-filter: blur(14px) saturate(1.3); border-bottom-color: var(--line-dark); }
.site-head .wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.logo { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; color: inherit; }
.logo { flex: none; }
.logo svg { width: 32px; height: 32px; flex: none; }
.logo b { font: 500 20px/1 var(--display); letter-spacing: .02em; }
.logo b i { font-style: normal; color: var(--amber); }
.site-head .head-login { color: var(--on-dark); border-color: var(--line-dark); }
.site-head .head-login:hover { border-color: var(--on-dark); }
.pill-nav { display: flex; gap: 2px; padding: 5px; border: 1px solid var(--line-dark); border-radius: 999px; background: rgba(237, 243, 240, .04); }
.pill-nav a { padding: 9px 15px; border-radius: 999px; text-decoration: none; font-size: 14px; color: var(--on-dark-2); transition: color .2s, background .2s; white-space: nowrap; }
.pill-nav a:hover { color: var(--on-dark); }
.pill-nav a[aria-current="page"] { background: var(--on-dark); color: var(--ink); }
.head-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn { position: relative; width: 44px; height: 44px; border-radius: 999px; border: 1px solid var(--line-dark); background: transparent; color: var(--on-dark); display: grid; place-items: center; cursor: pointer; text-decoration: none; }
.icon-btn svg { width: 19px; height: 19px; }
.icon-btn:hover { border-color: var(--on-dark); }
.icon-btn .count { position: absolute; top: -3px; right: -3px; min-width: 19px; height: 19px; border-radius: 999px; background: var(--amber); color: var(--amber-ink); font: 600 11px/19px var(--mono); text-align: center; padding: 0 5px; }
.icon-btn .count:empty, .icon-btn .count[data-n="0"] { display: none; }
.menu-btn { display: none; }
@media (max-width: 1400px) { .head-wa span { display: none; } .head-wa { width: 44px; padding: 0; justify-content: center; } }
@media (max-width: 1260px) { .pill-nav { display: none; } .menu-btn { display: grid; } .head-wa span, .head-login span { display: none; } .head-wa, .head-login { width: 44px; padding: 0; justify-content: center; } }
@media (max-width: 480px) { .site-head .wrap { gap: 10px; } .head-actions { gap: 6px; } .site-head .head-actions [data-open-list] { display: none; } .site-head .head-actions .btn, .site-head .head-actions .icon-btn { width: 40px; height: 40px; } }
@media (max-width: 360px) { .logo { gap: 8px; } .logo svg { width: 28px; height: 28px; } .logo b { font-size: 17px; } }

/* full-screen menu */
.menu { position: fixed; inset: 0; z-index: 70; background: var(--ink); color: var(--on-dark); display: flex; flex-direction: column; padding: calc(env(safe-area-inset-top, 0px) + 18px) max(var(--gutter), env(safe-area-inset-right, 0px)) calc(env(safe-area-inset-bottom, 0px) + 28px) max(var(--gutter), env(safe-area-inset-left, 0px));
  transform: translateY(-100%); transition: transform .45s cubic-bezier(.7, 0, .2, 1); visibility: hidden; }
.menu.open { transform: none; visibility: visible; }
.menu-top { display: flex; justify-content: space-between; align-items: center; height: 54px; }
.menu nav { display: flex; flex-direction: column; margin-top: auto; }
.menu nav a { font: 250 clamp(38px, 9vw, 72px)/1.08 var(--display); letter-spacing: -.04em; text-decoration: none; padding: 6px 0; border-bottom: 1px solid var(--line-dark); display: flex; justify-content: space-between; align-items: baseline; }
.menu nav a small { font: 400 12px var(--mono); letter-spacing: .12em; color: var(--on-dark-2); text-transform: uppercase; }
.menu nav a[aria-current="page"] { color: var(--mint); }
.menu-foot { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- heroes */
.hero { position: relative; overflow: hidden; background: var(--ink); color: var(--on-dark); --fg-2: var(--on-dark-2); --line: var(--line-dark); }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-bg::after { content: ""; position: absolute; inset: 0; background:
  radial-gradient(60% 55% at 50% 42%, rgba(13, 124, 102, .32), transparent 70%),
  radial-gradient(30% 30% at 50% 45%, rgba(240, 163, 58, .10), transparent 70%),
  linear-gradient(180deg, transparent 60%, var(--ink) 100%); }
.hero canvas.hero-field { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero .wrap { position: relative; z-index: 1; }
.hero-home { padding-top: calc(var(--header-h) + clamp(36px, 7vw, 96px)); padding-bottom: 0; }
.hero-home .display { display: grid; gap: .04em; }
.hero-home .display span { display: block; }
.hero-home .display .r { text-align: right; color: transparent; -webkit-text-stroke: 1px var(--on-dark); }
@supports not (-webkit-text-stroke: 1px #000) { .hero-home .display .r { color: var(--mint); } }
.hero-core { position: relative; min-height: clamp(380px, 52vw, 640px); display: grid; align-content: space-between; }
.hero-mid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 40px; align-items: end; margin-top: clamp(24px, 4vw, 56px); }
.hero-mid .lead { color: var(--on-dark-2); }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
.specs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line-dark); margin-top: clamp(40px, 6vw, 80px); }
.specs > div { padding: 22px 20px 26px 0; display: grid; gap: 6px; }
.specs > div + div { padding-left: 20px; border-left: 1px solid var(--line-dark); }
.specs b { font: 250 clamp(30px, 3.4vw, 48px)/1 var(--display); letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.specs span { font: 400 11.5px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--on-dark-2); }
@media (max-width: 860px) { .hero-mid { grid-template-columns: minmax(0, 1fr); } .hero-cta { justify-content: flex-start; } .specs { grid-template-columns: repeat(2, minmax(0, 1fr)); } .specs > div:nth-child(3) { padding-left: 0; border-left: 0; } .specs > div:nth-child(n+3) { border-top: 1px solid var(--line-dark); } }
.scroll-cue { display: inline-flex; align-items: center; gap: 10px; font: 400 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--on-dark-2); }
.scroll-cue i { width: 1px; height: 34px; background: linear-gradient(var(--mint), transparent); display: block; animation: cue 2.2s infinite; transform-origin: top; }
@keyframes cue { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

.page-hero { padding-top: calc(var(--header-h) + clamp(56px, 9vw, 130px)); padding-bottom: clamp(56px, 7vw, 100px); }
.page-hero .h1 { max-width: 15ch; }
.page-hero .lead { margin-top: 28px; color: var(--on-dark-2); }
.page-hero .row { margin-top: 36px; }
.crumbs { font: 400 12px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--on-dark-2); margin-bottom: 30px; display: flex; gap: 10px; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { color: var(--on-dark); }

/* ---------- marquee */
.ticker { background: var(--mint); color: var(--mint-ink); overflow: hidden; border-block: 1px solid rgba(11, 59, 48, .2); }
.ticker-track { display: flex; width: max-content; animation: tick 80s linear infinite; }
.ticker:hover .ticker-track { animation-play-state: paused; }
.ticker-item { display: flex; align-items: baseline; gap: 10px; padding: 16px 28px; white-space: nowrap; font-size: 15px; border-right: 1px solid rgba(11, 59, 48, .18); }
.ticker-item small { font: 400 12px var(--mono); letter-spacing: .04em; opacity: .75; }
@keyframes tick { to { transform: translateX(-50%); } }

/* ---------- bento */
.bento { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 14px; }
.tile { border-radius: var(--r); padding: clamp(24px, 2.6vw, 36px); position: relative; overflow: hidden; display: flex; flex-direction: column; gap: 16px; min-width: 0; background: var(--card); border: 1px solid var(--line); text-decoration: none; color: inherit; }
.tile .h3 { max-width: 20ch; }
.tile .tag { font: 500 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--fg-2); display: flex; justify-content: space-between; gap: 12px; }
.tile .tag svg { width: 16px; height: 16px; }
.tile.t-ink .link { color: var(--mint); }
.tile .foot { margin-top: auto; display: flex; justify-content: space-between; align-items: end; gap: 16px; flex-wrap: wrap; }
a.tile { transition: transform .3s, border-color .3s; }
a.tile:hover { transform: translateY(-3px); border-color: var(--fg-2); }
.tile.t-ink { background: var(--ink-2); color: var(--on-dark); border-color: var(--line-dark); --fg-2: var(--on-dark-2); --line: var(--line-dark); }
.tile.t-mint { background: var(--mint); color: var(--mint-ink); border-color: transparent; --fg-2: rgba(11, 59, 48, .72); --line: rgba(11, 59, 48, .2); }
.tile.t-amber { background: var(--amber); color: var(--amber-ink); border-color: transparent; --fg-2: rgba(61, 38, 3, .75); }
.span-7 { grid-column: span 7; } .span-5 { grid-column: span 5; } .span-4 { grid-column: span 4; } .span-8 { grid-column: span 8; } .span-6 { grid-column: span 6; } .span-12 { grid-column: span 12; } .span-3 { grid-column: span 3; }
@media (max-width: 1000px) { .bento > * { grid-column: span 6; } .bento > .span-12, .bento > .span-7, .bento > .span-8 { grid-column: span 12; } }
@media (max-width: 680px) { .bento > * { grid-column: span 12 !important; } }
.big-num { font: 200 clamp(56px, 7vw, 104px)/.9 var(--display); letter-spacing: -.05em; font-variant-numeric: tabular-nums; }
.nuclide-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 520px) { .nuclide-row { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.nuc { border: 1px solid var(--line-dark); border-radius: 12px; padding: 12px 12px 10px; display: grid; gap: 2px; background: rgba(237, 243, 240, .03); }
.nuc sup { font: 500 11px var(--mono); color: var(--amber); }
.nuc b { font: 300 32px/1 var(--display); letter-spacing: -.03em; }
.nuc span { font: 400 11px var(--mono); color: var(--on-dark-2); letter-spacing: .03em; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 12px; border: 1px solid var(--line); border-radius: 999px; font: 400 12.5px var(--mono); letter-spacing: .02em; white-space: nowrap; color: inherit; background: transparent; text-decoration: none; }
button.chip { cursor: pointer; }
button.chip[aria-pressed="true"] { background: var(--fg); color: var(--paper); border-color: var(--fg); }
.dark button.chip[aria-pressed="true"] { background: var(--on-dark); color: var(--ink); }
.chip.warn { border-color: var(--amber); color: var(--amber); }
.chip.ok { border-color: var(--teal); color: var(--teal); }
.tile-search { display: flex; gap: 8px; margin-top: 6px; }
.field { width: 100%; height: 50px; border-radius: 999px; border: 1px solid var(--line); background: var(--paper); color: var(--fg); padding: 0 20px; font-size: 15px; outline: none; transition: border-color .2s; min-width: 0; }
.field:focus { border-color: var(--teal); }
textarea.field { height: auto; min-height: 120px; border-radius: 16px; padding: 14px 18px; resize: vertical; line-height: 1.5; }
select.field { appearance: none; -webkit-appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--fg-2) 50%), linear-gradient(135deg, var(--fg-2) 50%, transparent 50%); background-position: calc(100% - 22px) 22px, calc(100% - 17px) 22px; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 40px; }
.dark .field, .tile.t-ink .field { background: rgba(237, 243, 240, .05); border-color: var(--line-dark); color: var(--on-dark); }
.dark .field::placeholder { color: var(--on-dark-2); }
.lbl { display: grid; gap: 8px; font: 500 12px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--fg-2); }
.lbl .field { font-family: var(--body); letter-spacing: 0; text-transform: none; }

/* ---------- definition (dictionary entry) */
.define { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: center; }
.define .h2 { max-width: 16ch; }
.entry { border-left: 1px solid var(--line); padding-left: clamp(24px, 3vw, 44px); display: grid; gap: 14px; }
.entry .word { font: 250 clamp(48px, 5.4vw, 80px)/1 var(--display); letter-spacing: -.04em; }
.entry .pron { font: 400 15px var(--mono); color: var(--fg-2); }
.entry ol { margin: 6px 0 0; padding-left: 20px; display: grid; gap: 10px; color: var(--fg-2); }
.entry ol li::marker { font-family: var(--mono); font-size: 13px; }
.entry ol li b { color: var(--fg); font-weight: 500; }
@media (max-width: 860px) { .define { grid-template-columns: minmax(0, 1fr); } }

/* ---------- problem tiles + compare */
.probs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.prob { padding: 30px 28px 34px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; gap: 12px; align-content: start; }
.prob svg { width: 30px; height: 30px; color: var(--teal); }
.prob p { color: var(--fg-2); font-size: 15.5px; }
@media (max-width: 900px) { .probs { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .probs { grid-template-columns: minmax(0, 1fr); } }
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: var(--card); }
table.cmp { width: 100%; border-collapse: collapse; min-width: 620px; }
table.cmp th, table.cmp td { padding: 18px 22px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 15.5px; }
table.cmp thead th { font: 500 12px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--fg-2); }
table.cmp thead th.us { color: var(--teal); }
table.cmp tbody tr:last-child td { border-bottom: 0; }
table.cmp td.us { background: color-mix(in srgb, var(--mint) 22%, transparent); }
.yes, .no { display: inline-flex; gap: 8px; align-items: flex-start; }
.yes svg, .no svg { width: 18px; height: 18px; flex: none; margin-top: 3px; }
.yes svg { color: var(--teal); } .no svg { color: var(--fg-2); opacity: .7; }

/* ---------- steps */
.steps { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); counter-reset: step; }
.step { padding: 26px 22px 0 0; display: grid; gap: 12px; align-content: start; position: relative; }
.step + .step { padding-left: 22px; border-left: 1px solid var(--line); }
.step .n { font: 400 12px var(--mono); letter-spacing: .12em; color: var(--teal); }
.dark .step .n { color: var(--mint); }
.step p { color: var(--fg-2); font-size: 15px; }
@media (min-width: 1001px) { .steps.s4 { grid-template-columns: repeat(4, minmax(0, 1fr)); } .steps.s6 { grid-template-columns: repeat(6, minmax(0, 1fr)); } }
@media (max-width: 1000px) and (min-width: 561px) { .steps.s6 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 1000px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 32px; } .step + .step { border-left: 0; padding-left: 0; } .step { border-top: 1px solid var(--line); padding-top: 22px; } .steps { border-top: 0; } }
@media (max-width: 560px) { .steps { grid-template-columns: minmax(0, 1fr); } }

/* ---------- radiopharma band */
.decay-card { border: 1px solid var(--line-dark); border-radius: var(--r); padding: clamp(18px, 2.4vw, 30px); background: rgba(237, 243, 240, .025); }
.decay-card svg { width: 100%; height: auto; overflow: visible; }
.legend { display: flex; flex-wrap: wrap; gap: 14px 20px; margin-top: 14px; font: 400 12.5px var(--mono); color: var(--on-dark-2); }
.legend i { display: inline-block; width: 18px; height: 2px; margin-right: 8px; vertical-align: middle; }
.quote-line { font: 300 clamp(22px, 2.4vw, 32px)/1.3 var(--display); letter-spacing: -.02em; max-width: 30ch; }

/* ---------- roadmap */
.phases { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; align-items: end; }
.phase { border-radius: var(--r); padding: 28px; display: grid; gap: 14px; align-content: end; border: 1px solid var(--line); background: var(--card); }
.phase .bar { display: flex; gap: 6px; align-items: end; height: 110px; margin-bottom: 8px; }
.phase .bar i { flex: 1; background: var(--paper-2); border-radius: 4px; display: block; }
.phase.now { background: var(--ink-2); color: var(--on-dark); border-color: transparent; --fg-2: var(--on-dark-2); }
.phase.now .bar i { background: var(--mint); }
.phase .when { font: 500 11.5px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--fg-2); display: flex; justify-content: space-between; }
.phase.now .when b { color: var(--mint); font-weight: 500; }
.phase ul { margin: 0; padding-left: 18px; color: var(--fg-2); font-size: 15px; display: grid; gap: 6px; }
@media (max-width: 860px) { .phases { grid-template-columns: minmax(0, 1fr); } }

/* ---------- horizontal cards */
.hscroll { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(280px, 30%); gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 14px; scrollbar-width: thin; }
.hscroll > * { scroll-snap-align: start; }
@media (max-width: 760px) { .hscroll { grid-auto-columns: 82%; } }
.ind { border-radius: var(--r); background: var(--card); border: 1px solid var(--line); padding: 28px; display: grid; gap: 14px; align-content: start; min-height: 320px; }
.ind .art { height: 120px; border-radius: 12px; background: var(--paper-2); display: grid; place-items: center; margin-bottom: 6px; color: var(--teal); overflow: hidden; }
.ind .art svg { width: 100%; height: 100%; }
.ind p { color: var(--fg-2); font-size: 15px; }
.ind .tag { font: 500 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--fg-2); }
.scroll-btns { display: flex; gap: 8px; }

/* ---------- modes */
.modes { font: 250 clamp(44px, 8vw, 128px)/.95 var(--display); letter-spacing: -.05em; }
.modes em { font-style: normal; color: var(--mint); }
.modes .dot { color: var(--amber); }

/* ---------- CTA + composer */
.cta { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
@media (max-width: 900px) { .cta { grid-template-columns: minmax(0, 1fr); } }
.composer { display: grid; gap: 16px; border-radius: var(--r); padding: clamp(22px, 3vw, 36px); background: var(--card); border: 1px solid var(--line); }
.dark .composer { background: var(--ink-2); }
.composer .two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; }
@media (max-width: 560px) { .composer .two { grid-template-columns: minmax(0, 1fr); } }
.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label { height: 38px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line); display: inline-flex; align-items: center; font-size: 14px; cursor: pointer; }
.seg input:checked + label { background: var(--fg); color: var(--paper); border-color: var(--fg); }
.dark .seg input:checked + label { background: var(--on-dark); color: var(--ink); }
.seg input:focus-visible + label { outline: 2px solid var(--teal); outline-offset: 2px; }
.checks { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 14.5px; }
.checks label { display: inline-flex; gap: 8px; align-items: center; cursor: pointer; }
.checks input { accent-color: var(--teal); width: 16px; height: 16px; }
.preview { font: 400 13px/1.6 var(--mono); white-space: pre-wrap; background: var(--paper-2); border-radius: 12px; padding: 16px; color: var(--fg-2); max-height: 240px; overflow: auto; }
.dark .preview { background: rgba(237, 243, 240, .05); }
.notice { border: 1px solid var(--amber); border-radius: 12px; padding: 14px 16px; font-size: 14px; color: var(--fg); display: flex; gap: 12px; }
.notice svg { width: 20px; height: 20px; color: var(--amber); flex: none; margin-top: 2px; }
.dark .notice { color: var(--on-dark); }
.contact-alt { display: grid; gap: 6px; }
.copyable { display: inline-flex; align-items: center; gap: 10px; font: 400 15px var(--mono); }
.copyable button { border: 1px solid var(--line); background: transparent; border-radius: 999px; height: 30px; padding: 0 12px; font-size: 12px; cursor: pointer; }

/* ---------- footer */
.site-foot { background: var(--ink); color: var(--on-dark); --fg-2: var(--on-dark-2); --line: var(--line-dark); padding-top: clamp(64px, 8vw, 110px); padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 28px); overflow: hidden; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(4, minmax(0, 1fr)); gap: 32px; }
.foot-grid h4 { font: 500 11.5px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--on-dark-2); margin-bottom: 16px; }
.foot-grid nav { display: grid; gap: 10px; }
.foot-grid nav a { text-decoration: none; color: var(--on-dark); opacity: .86; font-size: 15px; }
.foot-grid nav a:hover { opacity: 1; color: var(--mint); }
.foot-grid .about p { color: var(--on-dark-2); max-width: 36ch; margin: 18px 0 22px; font-size: 15px; }
@media (max-width: 1000px) { .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .foot-grid .about { grid-column: 1 / -1; } }
.wordmark { font: 200 clamp(60px, 15.5vw, 250px)/.8 var(--display); letter-spacing: -.06em; margin: clamp(56px, 8vw, 110px) 0 18px; color: transparent; -webkit-text-stroke: 1px rgba(237, 243, 240, .28); user-select: none; white-space: nowrap; }
@supports not (-webkit-text-stroke: 1px #000) { .wordmark { color: rgba(237, 243, 240, .1); } }
.foot-bottom { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; border-top: 1px solid var(--line-dark); padding-top: 22px; font: 400 12px var(--mono); letter-spacing: .06em; color: var(--on-dark-2); }
.foot-bottom a { text-decoration: none; }

/* ---------- drawer (enquiry list) */
.drawer-bg { position: fixed; inset: 0; background: rgba(7, 10, 12, .5); z-index: 80; opacity: 0; pointer-events: none; transition: opacity .3s; }
.drawer-bg.open { opacity: 1; pointer-events: auto; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(460px, 100%); z-index: 81; background: var(--paper); color: var(--fg); display: flex; flex-direction: column; transform: translateX(100%); transition: transform .4s cubic-bezier(.7, 0, .2, 1);
  padding: calc(env(safe-area-inset-top, 0px) + 20px) max(22px, env(safe-area-inset-right, 0px)) calc(env(safe-area-inset-bottom, 0px) + 20px) 22px; visibility: hidden; }
.drawer.open { transform: none; visibility: visible; }
.drawer header { display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.drawer .icon-btn { color: var(--fg); border-color: var(--line); }
.drawer .body { flex: 1; overflow: auto; padding: 16px 0; display: grid; gap: 10px; align-content: start; }
.drawer .li { display: grid; grid-template-columns: minmax(0, 1fr) 130px 36px; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.drawer .li b { display: block; font-weight: 500; font-size: 15px; overflow-wrap: anywhere; }
.drawer .li small { font: 400 12px var(--mono); color: var(--fg-2); }
.drawer .li .field { height: 38px; font-size: 14px; padding: 0 12px; }
.drawer .li .icon-btn { width: 36px; height: 36px; }
.drawer footer { display: grid; gap: 10px; border-top: 1px solid var(--line); padding-top: 16px; }
.empty { text-align: center; padding: 40px 10px; display: grid; gap: 12px; justify-items: center; color: var(--fg-2); }

/* ---------- catalogue */
.cat-bar { position: sticky; top: calc(env(safe-area-inset-top, 0px) + var(--header-h)); z-index: 20; background: var(--paper); border-bottom: 1px solid var(--line); padding-block: 14px; }
.cat-bar .wrap { display: grid; grid-template-columns: minmax(0, 2.2fr) repeat(3, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 900px) { .cat-bar .wrap { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } .cat-bar .wrap > :first-child { grid-column: 1 / -1; } }
.cat-meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin: 26px 0 14px; }
.cat-list { border-top: 1px solid var(--line); }
.prod { display: grid; grid-template-columns: minmax(0, 2.4fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.1fr) 250px; gap: 18px; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--line); }
.prod .nm { min-width: 0; }
.prod .nm button { all: unset; cursor: pointer; font-weight: 500; font-size: 16px; overflow-wrap: anywhere; display: block; }
.prod .nm button:hover { color: var(--teal); }
.prod .nm button:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 4px; }
.prod .nm small { color: var(--fg-2); font-size: 13px; display: block; margin-top: 2px; overflow-wrap: anywhere; }
.prod .cell { font: 400 13.5px var(--mono); color: var(--fg-2); min-width: 0; overflow-wrap: anywhere; }
.prod .cell b { display: block; font: 500 10.5px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--fg-2); opacity: .7; margin-bottom: 2px; }
.badge { display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 10px; border-radius: 999px; font: 500 11px var(--mono); letter-spacing: .04em; white-space: nowrap; }
.badge.scarce { background: color-mix(in srgb, var(--amber) 22%, transparent); color: var(--fg); }
.badge.api { background: color-mix(in srgb, var(--teal) 16%, transparent); color: var(--teal-ink); }
.badge.int { background: var(--paper-2); color: var(--fg-2); }
.add-btn[aria-pressed="true"] { background: var(--teal); color: #fff; border-color: var(--teal); }
@media (max-width: 860px) { .prod { grid-template-columns: minmax(0, 1fr) auto; } .prod > .row { flex-wrap: nowrap; } .prod .cell { display: none; } .prod .cell.show-m { display: block; grid-column: 1 / -1; order: 3; } }
.more-row { display: flex; justify-content: center; padding: 30px 0; }

.modal-bg { position: fixed; inset: 0; z-index: 90; background: rgba(7, 10, 12, .6); display: none; align-items: center; justify-content: center; padding: 18px; }
.modal-bg.open { display: flex; }
.modal { width: min(820px, 100%); max-height: calc(100vh - 36px); overflow: auto; background: var(--paper); color: var(--fg); border-radius: 22px; padding: clamp(22px, 3vw, 38px); display: grid; gap: 22px; }
.modal .top { display: flex; justify-content: space-between; gap: 16px; align-items: start; }
.modal .icon-btn { color: var(--fg); border-color: var(--line); flex: none; }
.kv { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.kv > div { padding: 14px 16px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); min-width: 0; }
.kv b { display: block; font: 500 10.5px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--fg-2); margin-bottom: 4px; }
.kv span { font-size: 15px; overflow-wrap: anywhere; }
@media (max-width: 600px) { .kv { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.live { border: 1px dashed var(--line); border-radius: 14px; padding: 18px; display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 18px; align-items: start; }
.live img { width: 160px; height: 160px; object-fit: contain; background: #fff; border-radius: 10px; }
@media (max-width: 560px) { .live { grid-template-columns: minmax(0, 1fr); } }

/* ---------- radio page */
.iso-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); gap: 10px; }
.iso { border-radius: 14px; border: 1px solid var(--line); background: var(--card); padding: 16px; display: grid; gap: 6px; text-align: left; cursor: pointer; transition: border-color .2s, transform .2s; color: inherit; font: inherit; }
.iso:hover { border-color: var(--fg-2); transform: translateY(-2px); }
.iso[aria-pressed="true"] { border-color: var(--teal); box-shadow: inset 0 0 0 1px var(--teal); }
.iso .top { display: flex; justify-content: space-between; align-items: start; }
.iso .sym { font: 300 34px/1 var(--display); letter-spacing: -.03em; }
.iso .sym sup { font: 500 12px var(--mono); color: var(--teal); vertical-align: top; margin-right: 2px; }
.iso .kind { font: 500 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; padding: 3px 7px; border-radius: 999px; }
.k-pet { background: color-mix(in srgb, var(--teal) 16%, transparent); color: var(--teal-ink); }
.k-spect { background: var(--paper-2); color: var(--fg-2); }
.k-ther { background: color-mix(in srgb, var(--amber) 24%, transparent); color: var(--fg); }
.k-alpha { background: var(--amber); color: var(--amber-ink); }
.iso .hl { font: 400 13px var(--mono); }
.iso .use { font-size: 13px; color: var(--fg-2); line-height: 1.4; }
.calc { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
@media (max-width: 900px) { .calc { grid-template-columns: minmax(0, 1fr); } }
.calc .out { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); margin-top: 6px; }
.calc .out > div { padding: 16px 14px 4px 0; display: grid; gap: 4px; }
.calc .out > div + div { padding-left: 14px; border-left: 1px solid var(--line); }
.calc .out b { font: 250 clamp(28px, 3vw, 42px)/1 var(--display); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.calc .out span { font: 400 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--fg-2); }
.calc .out.units { grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); row-gap: 8px; }
.calc .out.units > div { border-left: 0; padding-left: 0; }
.calc .out b { overflow-wrap: anywhere; }
.range { width: 100%; accent-color: var(--teal); }
.rp-table { width: 100%; border-collapse: collapse; min-width: 760px; }
.rp-table th, .rp-table td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 14.5px; }
.rp-table th { font: 500 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--fg-2); position: sticky; top: 0; background: var(--card); }
.rp-table td.m { font-family: var(--mono); font-size: 13px; }
.rp-table tr:hover td { background: color-mix(in srgb, var(--mint) 14%, transparent); }

/* ---------- generic cards */
.card { border-radius: var(--r); border: 1px solid var(--line); background: var(--card); padding: clamp(22px, 2.4vw, 32px); display: grid; gap: 14px; align-content: start; min-width: 0; }
.dark .card { background: var(--ink-2); }
.card p { color: var(--fg-2); font-size: 15.5px; }
.card .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--paper-2); color: var(--teal); }
.dark .card .ico { background: rgba(237, 243, 240, .06); color: var(--mint); }
.card .ico svg { width: 22px; height: 22px; }
.list { margin: 0; padding: 0; list-style: none; display: grid; }
.list li { padding: 14px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 12px; font-size: 15.5px; }
.list li svg { width: 20px; height: 20px; color: var(--teal); margin-top: 3px; }
.dark .list li svg { color: var(--mint); }
.list li span { color: var(--fg-2); }
.list li b { color: var(--fg); font-weight: 500; display: block; }
.stop svg { color: var(--danger) !important; }
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 22px 0; display: flex; justify-content: space-between; gap: 20px; font: 400 clamp(18px, 1.7vw, 22px)/1.3 var(--display); letter-spacing: -.01em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 300 28px/1 var(--display); color: var(--teal); transition: transform .3s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > div { padding: 0 0 24px; color: var(--fg-2); max-width: 72ch; }

/* ---------- toast */
.toast { position: fixed; left: 50%; bottom: calc(env(safe-area-inset-bottom, 0px) + 24px); transform: translate(-50%, 30px); opacity: 0; background: var(--ink); color: var(--on-dark); border: 1px solid var(--line-dark); padding: 12px 18px; border-radius: 999px; font-size: 14px; z-index: 95; transition: all .3s; pointer-events: none; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- motion */
.rise { animation: rise .9s cubic-bezier(.2, .7, .2, 1) both; }
.rise.d1 { animation-delay: .08s; } .rise.d2 { animation-delay: .16s; } .rise.d3 { animation-delay: .24s; } .rise.d4 { animation-delay: .32s; }
@keyframes rise { from { transform: translateY(24px); opacity: .001; } }
.reveal { transition: transform .9s cubic-bezier(.2, .7, .2, 1), opacity .9s; }
.reveal.pre { transform: translateY(26px); opacity: .35; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal.pre { transform: none; opacity: 1; }
}
@media (max-width: 760px) { .hero canvas.hero-field { opacity: .45; } }