:root {
  --bg: #06090c; --bg2: #0a0f13; --panel: #0e151b; --panel2: #131c23;
  --line: rgba(255, 255, 255, .08); --line2: rgba(255, 255, 255, .15);
  --ink: #eef3f6; --muted: #9aa8b4; --dim: #6c7b87;
  --brand: #22d3c5; --brand2: #0aa39d; --brand-ink: #03201e;
  --glow: rgba(34, 211, 197, .3);
  --ok: #3ddc84; --warn: #f0a43a;
  --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img { display: block; max-width: 100%; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.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; }
h1, h2, h3 { font-family: "Space Grotesk", Inter, sans-serif; letter-spacing: -.025em; line-height: 1.05; margin: 0; }

/* research-use bar + header */
.ruo-bar { background: linear-gradient(90deg, var(--brand2), #0b7c77); color: #eafffd; text-align: center; font-size: 12.5px; font-weight: 600; letter-spacing: .04em; padding: 7px 16px; }
.site-head { position: sticky; top: 0; z-index: 20; background: rgba(6, 9, 12, .78); -webkit-backdrop-filter: saturate(1.4) blur(14px); backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; gap: 28px; height: 66px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; font-family: "Space Grotesk", Inter, sans-serif; font-weight: 700; font-size: 19px; letter-spacing: -.01em; }
.logo svg { width: 28px; height: 28px; filter: drop-shadow(0 0 10px rgba(34, 211, 197, .35)); }
.logo b { color: var(--brand); }
.site-nav { display: flex; gap: 26px; margin-left: auto; }
.site-nav a { text-decoration: none; color: var(--muted); font-weight: 500; font-size: 14.5px; transition: color .15s; }
.site-nav a:hover { color: var(--ink); }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; text-decoration: none; font-weight: 600; border-radius: 12px; padding: 13px 22px; font-size: 15px; border: 1px solid transparent; cursor: pointer; transition: transform .15s, box-shadow .2s, background .2s, border-color .2s, color .2s; }
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: var(--brand); color: var(--brand-ink); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 34px -8px var(--glow); background: #3fe0d3; }
.btn-ghost { border-color: var(--line2); color: var(--ink); background: rgba(255, 255, 255, .02); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-sm { padding: 9px 15px; font-size: 13.5px; border-radius: 10px; }
.btn-lg { padding: 16px 26px; font-size: 16px; border-radius: 14px; }
.btn-block { display: flex; width: 100%; }
.btn-disabled { background: var(--panel2); color: var(--dim); cursor: not-allowed; }

/* hero */
.hero { position: relative; overflow: hidden; padding: 80px 0 60px; }
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(55% 60% at 78% 32%, rgba(34, 211, 197, .2), transparent 70%), radial-gradient(40% 50% at 8% 0%, rgba(10, 163, 157, .14), transparent 70%); }
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .55;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(70% 70% at 62% 30%, #000 25%, transparent 75%); mask-image: radial-gradient(70% 70% at 62% 30%, #000 25%, transparent 75%); }
.hero .wrap { position: relative; z-index: 1; }
.hero .wrap:first-child { display: grid; grid-template-columns: 1.08fr .92fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 11.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--brand); border: 1px solid rgba(34, 211, 197, .35); background: rgba(34, 211, 197, .06); border-radius: 999px; padding: 7px 13px; }
.eyebrow i { width: 7px; height: 7px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 12px var(--brand); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .35; } }
.hero h1 { font-size: clamp(46px, 7.4vw, 88px); font-weight: 700; margin: 24px 0 20px; }
.grad { background: linear-gradient(90deg, var(--brand), #9cf6ee 55%, var(--brand)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(16px, 2vw, 19px); color: var(--muted); max-width: 560px; margin: 0; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }

/* hero photos */
.specimens { position: relative; height: 460px; }
.specimens::before { content: ""; position: absolute; inset: 14% 8%; background: radial-gradient(closest-side, rgba(34, 211, 197, .38), transparent); filter: blur(34px); }
.specimens .tile { position: absolute; width: 54%; box-shadow: 0 34px 80px -24px rgba(0, 0, 0, .8), 0 0 0 1px rgba(255, 255, 255, .07); }
.specimens .t1 { left: 0; top: 54px; transform: rotate(-8deg); }
.specimens .t2 { right: 0; top: 0; transform: rotate(7deg); z-index: 2; }
.specimens .t3 { left: 24%; bottom: 0; transform: rotate(-1.5deg); z-index: 3; }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-top: 56px; }
.stats div { background: rgba(14, 21, 27, .85); padding: 22px 22px 20px; }
.stats b { display: block; font-family: "Space Grotesk", sans-serif; font-size: 30px; letter-spacing: -.02em; line-height: 1.1; }
.stats small { color: var(--muted); font-size: 13px; }

/* ticker */
.ticker { border-block: 1px solid var(--line); background: var(--bg2); overflow: hidden; white-space: nowrap; }
.ticker-track { display: inline-flex; padding: 15px 0; animation: tick 42s linear infinite; }
.ticker span { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 12.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); display: inline-flex; align-items: center; gap: 22px; padding-right: 22px; }
.ticker span::after { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 10px var(--brand); }
@keyframes tick { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .ticker-track, .eyebrow i { animation: none; } html { scroll-behavior: auto; } }

/* sections */
section { padding: 92px 0; }
.band { background: var(--bg2); border-block: 1px solid var(--line); }
.kicker { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 12px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--brand); }
h2 { font-size: clamp(32px, 4.8vw, 54px); font-weight: 700; margin-top: 10px; }
.sec-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; flex-wrap: wrap; margin-bottom: 26px; }
.count-line { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 12.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--dim); margin: 0; }
.count-line span { color: var(--brand); }

/* catalog filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.filters button { font: inherit; font-size: 14px; font-weight: 600; color: var(--muted); background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 9px 15px; cursor: pointer; display: inline-flex; gap: 8px; align-items: center; transition: color .15s, border-color .15s, background .15s; }
.filters button span { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 12px; color: var(--dim); }
.filters button:hover { color: var(--ink); border-color: var(--line2); }
.filters button[aria-pressed="true"] { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.filters button[aria-pressed="true"] span { color: var(--brand-ink); opacity: .7; }

/* product grid */
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.card { display: flex; flex-direction: column; text-decoration: none; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .2s, border-color .2s, box-shadow .25s; }
.card:hover { transform: translateY(-4px); border-color: rgba(34, 211, 197, .55); box-shadow: 0 20px 50px -20px var(--glow); }
.card[hidden] { display: none; }
.tile { background: #fff; border-radius: 16px; aspect-ratio: 1; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.card .tile { border-radius: 0; }
.tile img { width: 100%; height: 100%; object-fit: contain; transition: transform .35s ease; }
.card:hover .tile img { transform: scale(1.045); }
.card-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 12px; border-top: 1px solid var(--line); }
.card-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.cat-no { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 12.5px; font-weight: 600; letter-spacing: .06em; color: var(--brand); }
.grp { font-size: 11px; color: var(--dim); text-transform: uppercase; letter-spacing: .12em; font-weight: 600; }
.card-bottom { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.price { font-family: "Space Grotesk", sans-serif; font-size: 23px; font-weight: 700; letter-spacing: -.01em; }
.oos { font-size: 12px; color: var(--warn); font-weight: 600; margin-right: auto; }
.go { flex: none; width: 36px; height: 36px; border-radius: 11px; border: 1px solid var(--line2); display: flex; align-items: center; justify-content: center; color: var(--muted); transition: background .2s, border-color .2s, color .2s; }
.go svg { width: 16px; height: 16px; }
.card:hover .go { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.note { color: var(--dim); font-size: 13.5px; margin: 24px 0 0; }

/* verification + features */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 38px; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; position: relative; overflow: hidden; }
.step::after { content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 40%; background: linear-gradient(90deg, var(--brand), transparent); }
.step b { font-family: "JetBrains Mono", ui-monospace, monospace; color: var(--brand); font-size: 13px; letter-spacing: .12em; }
.step h3 { font-size: 23px; margin: 16px 0 8px; }
.step p { color: var(--muted); margin: 0; font-size: 15px; }
.feat { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 38px; }
.feat div { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; background: linear-gradient(180deg, rgba(255, 255, 255, .03), transparent); }
.feat svg { width: 30px; height: 30px; color: var(--brand); }
.feat h3 { font-size: 19px; margin: 18px 0 6px; }
.feat p { color: var(--muted); margin: 0; font-size: 14.5px; }
.step a, details a, .prose a, .checks a { color: var(--brand); }

/* faq */
.faq { max-width: 840px; }
details { border-bottom: 1px solid var(--line); }
summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 16px; padding: 21px 0; font-weight: 600; font-size: 17px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--brand); font-size: 24px; line-height: 1; }
details[open] summary::after { content: "\2212"; }
details p { color: var(--muted); margin: 0 0 22px; max-width: 740px; }

/* closing band */
.cta-band { border-radius: 24px; padding: 56px 44px; display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; border: 1px solid rgba(34, 211, 197, .28);
  background: radial-gradient(80% 140% at 0% 0%, rgba(34, 211, 197, .24), transparent 60%), var(--panel); }
.cta-band h2 { font-size: clamp(28px, 3.8vw, 44px); margin: 0; }
.cta-band p { color: var(--muted); margin: 10px 0 0; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 60px 0 30px; color: var(--muted); font-size: 14px; }
.foot { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 36px; }
.foot-ruo { margin: 16px 0 0; max-width: 430px; }
footer h4 { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--ink); margin: 0 0 14px; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer li { margin-bottom: 9px; }
footer a { text-decoration: none; }
footer a:hover { color: var(--brand); }
.legal { border-top: 1px solid var(--line); margin-top: 44px; padding-top: 22px; font-size: 12.5px; color: var(--dim); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* product page */
.pdp { padding: 46px 0 80px; }
.pdp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.pdp-media { position: sticky; top: 100px; }
.pdp-media::before { content: ""; position: absolute; inset: 8%; background: radial-gradient(closest-side, rgba(34, 211, 197, .35), transparent); filter: blur(40px); z-index: -1; }
.tile-lg { border-radius: 24px; box-shadow: 0 40px 100px -46px var(--glow), 0 0 0 1px rgba(255, 255, 255, .07); }
.crumbs { font-size: 13px; color: var(--dim); margin: 0 0 18px; }
.crumbs a { text-decoration: none; color: var(--muted); }
.crumbs a:hover { color: var(--brand); }
.price-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 8px; }
.stock { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 600; color: var(--ok); }
.stock i { width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 10px currentColor; }
.stock.out { color: var(--warn); }
.pdp-price { font-family: "Space Grotesk", sans-serif; font-size: 56px; font-weight: 700; letter-spacing: -.03em; line-height: 1; }
.pdp-price small { font-family: Inter, sans-serif; font-size: 15px; font-weight: 500; letter-spacing: 0; color: var(--dim); margin-left: 8px; }
.ruo-box { margin: 24px 0; border: 1px solid rgba(34, 211, 197, .3); background: rgba(34, 211, 197, .06); border-radius: 12px; padding: 12px 14px; font-size: 14px; font-weight: 500; color: #c6f4ef; }
.pdp-desc { color: var(--muted); margin: 0 0 20px; }
.specs { width: 100%; border-collapse: collapse; font-size: 14.5px; margin-bottom: 26px; }
.specs th, .specs td { text-align: left; padding: 12px 0; border-bottom: 1px solid var(--line); }
.specs th { color: var(--dim); font-weight: 500; width: 40%; }
.pdp-note { font-size: 13px; color: var(--dim); margin: 12px 0 24px; text-align: center; }
.checks { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 11px; font-size: 14.5px; color: var(--muted); }
.checks li { position: relative; padding-left: 29px; }
.checks li::before { content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px; border-radius: 50%;
  background: rgba(34, 211, 197, .15) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322d3c5' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 11px no-repeat; }
.pdp-fine { font-size: 12px; color: var(--dim); margin: 0; }

/* policy pages */
.policy { padding: 56px 0 84px; }
.prose { max-width: 800px; }
.prose h1 { font-size: clamp(36px, 5.4vw, 56px); margin: 6px 0 10px; }
.prose .updated { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 12.5px; color: var(--dim); margin: 0 0 8px; }
.prose h2 { font-size: 23px; margin: 38px 0 10px; letter-spacing: -.01em; }
.prose p, .prose li { color: var(--muted); }
.prose strong { color: var(--ink); }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 6px; }
.prose .btn { color: var(--brand-ink); margin: 8px 0; }

@media (max-width: 980px) {
  .hero .wrap:first-child { grid-template-columns: 1fr; gap: 28px; }
  .specimens { height: 380px; max-width: 540px; width: 100%; margin: 0 auto; }
  .grid { grid-template-columns: repeat(3, 1fr); }
  .feat { grid-template-columns: repeat(2, 1fr); }
  .pdp-grid { grid-template-columns: 1fr; gap: 30px; }
  .pdp-media { position: relative; top: 0; max-width: 560px; }
}
@media (max-width: 760px) {
  .site-nav { display: none; }
  .site-head .btn { margin-left: auto; }
  .hero { padding: 52px 0 40px; }
  .specimens { height: 300px; }
  .stats { grid-template-columns: repeat(2, 1fr); margin-top: 36px; }
  .stats b { font-size: 24px; }
  section { padding: 64px 0; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .card-body { padding: 10px 12px 12px; gap: 8px; }
  .grp { display: none; }
  .price { font-size: 18px; }
  .go { width: 30px; height: 30px; border-radius: 9px; }
  .steps, .feat { grid-template-columns: 1fr; }
  .foot { grid-template-columns: 1fr; }
  .cta-band { padding: 36px 24px; }
  .pdp-price { font-size: 46px; }
}