:root {
  --ink: #111310;
  --paper: #f5f2ec;
  --paper-deep: #e7e3dc;
  --green: #58d64d;
  --green-dark: #2e8d2d;
  --forest: #183d32;
  --charcoal: #555650;
  --white: #fffefb;
  --line: rgba(17, 19, 16, 0.24);
  --shell: 1380px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.13;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.72' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");
}

::selection {
  color: var(--ink);
  background: var(--green);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

.section-shell {
  width: min(calc(100% - 64px), var(--shell));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 64px), 1460px);
  min-height: 78px;
  margin-inline: auto;
}

.wordmark,
.footer-wordmark {
  font-weight: 800;
  font-size: clamp(1.1rem, 2vw, 1.65rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.6vw, 42px);
}

.desktop-nav a {
  position: relative;
  padding: 28px 0 22px;
  font-weight: 650;
  font-size: 0.95rem;
  line-height: 1;
}

.desktop-nav a::after {
  position: absolute;
  bottom: 17px;
  left: 0;
  width: 100%;
  height: 2px;
  content: "";
  background: var(--green-dark);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

.desktop-nav a:hover::after,
.desktop-nav a:focus-visible::after,
.desktop-nav a.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.mobile-menu {
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(520px, 0.88fr) minmax(620px, 1.12fr);
  min-height: calc(100svh - 78px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(56px, 5.6vw, 96px) clamp(42px, 5vw, 82px);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 13px;
  margin: 0 0 34px;
  color: var(--green-dark);
  font-size: 0.74rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.085em;
  text-transform: uppercase;
}

.eyebrow span {
  width: 9px;
  height: 9px;
  background: var(--green);
}

.hero h1,
.page-intro h1 {
  margin: 0;
  font-size: clamp(4rem, 6.7vw, 7.45rem);
  font-weight: 800;
  line-height: 0.89;
  letter-spacing: -0.075em;
}

.hero-rule {
  width: 62%;
  height: 2px;
  margin: 34px 0 24px;
  background: linear-gradient(90deg, var(--green) 0 13px, var(--green-dark) 13px 100%);
}

.hero-lead {
  max-width: 620px;
  margin: 0;
  font-size: clamp(1.05rem, 1.35vw, 1.3rem);
  line-height: 1.42;
}

.hero-lead strong {
  color: var(--green-dark);
}

.hero-actions {
  display: flex;
  gap: 22px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  min-width: 220px;
  min-height: 62px;
  padding: 15px 25px;
  border: 1px solid var(--ink);
  border-radius: 0;
  font-weight: 750;
  line-height: 1.1;
  cursor: pointer;
  white-space: nowrap;
  transition: color 200ms ease, background 200ms ease, border 200ms ease;
}

.button span,
.text-link span,
.next-link a span {
  display: inline-block;
  margin-left: 22px;
  font-size: 1.55em;
  font-weight: 400;
  line-height: 0.5;
  transition: transform 200ms ease;
}

.button:hover span,
.text-link:hover span,
.next-link a:hover span {
  transform: translateX(6px);
}

.button-primary {
  background: var(--green);
  border-color: var(--green);
}

.button-primary:hover,
.button-primary:focus-visible {
  color: var(--white);
  background: var(--forest);
  border-color: var(--forest);
}

.button-outline:hover,
.button-outline:focus-visible {
  color: var(--paper);
  background: var(--ink);
}

.hero-visual {
  position: relative;
  min-height: 700px;
  overflow: hidden;
  background: #b9b8b2;
}

.hero-visual::before,
.hero-visual::after {
  position: absolute;
  z-index: 2;
  content: "";
  pointer-events: none;
}

.hero-visual::before {
  inset: 7% 8%;
  border: 1px solid rgba(88, 214, 77, 0.48);
  border-right-color: transparent;
  border-bottom-color: transparent;
}

.hero-visual::after {
  right: 7%;
  bottom: 8%;
  width: 32%;
  height: 27%;
  border-right: 1px solid rgba(88, 214, 77, 0.72);
  border-bottom: 1px solid rgba(88, 214, 77, 0.72);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 700px;
  object-fit: cover;
  filter: saturate(0.12) contrast(1.08);
  transition: transform 900ms cubic-bezier(.2,.75,.2,1);
}

.hero:hover .hero-visual img {
  transform: scale(1.018);
}

.hero-note {
  position: absolute;
  z-index: 3;
  display: flex;
  flex-direction: column;
  width: 142px;
  color: var(--paper);
  font-size: 0.7rem;
  font-weight: 750;
  line-height: 1.2;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-shadow: 0 1px 8px rgba(0,0,0,.45);
}

.hero-note::before {
  width: 90px;
  height: 1px;
  margin-bottom: 7px;
  content: "";
  background: var(--green);
}

.hero-note b {
  color: var(--green);
  font-size: 1rem;
}

.note-one {
  top: 15%;
  right: 5%;
}

.note-two {
  right: 8%;
  bottom: 14%;
}

.hero-year {
  position: absolute;
  z-index: 3;
  top: 49%;
  right: 6%;
  padding: 4px 0;
  color: var(--green);
  border-top: 1px solid var(--green);
  font-weight: 800;
  font-size: 1rem;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(calc(100% - 64px), 1460px);
  margin-inline: auto;
  border-bottom: 1px solid var(--line);
}

.trust-strip div {
  padding: 25px 30px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.trust-strip div + div {
  border-left: 1px solid var(--line);
}

.trust-strip span {
  margin-right: 10px;
  color: var(--green-dark);
}

.about-section {
  display: grid;
  grid-template-columns: minmax(340px, 0.72fr) minmax(470px, 1fr);
  gap: clamp(60px, 9vw, 150px);
  align-items: center;
  padding-block: clamp(100px, 12vw, 180px);
}

.about-image-wrap {
  position: relative;
  align-self: stretch;
  min-height: 650px;
  background: var(--paper-deep);
}

.about-image-wrap::before {
  position: absolute;
  top: -25px;
  left: -25px;
  width: 36%;
  height: 34%;
  content: "";
  border-top: 1px solid var(--green-dark);
  border-left: 1px solid var(--green-dark);
}

.about-image-wrap img {
  width: 100%;
  height: 100%;
  min-height: 650px;
  object-fit: cover;
  object-position: 54% 50%;
  filter: grayscale(1) contrast(1.05);
}

.image-caption {
  position: absolute;
  right: -1px;
  bottom: -1px;
  padding: 13px 20px;
  background: var(--paper);
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
}

.about-copy h2,
.section-heading h2,
.mission-teaser blockquote,
.contact-band h2,
.story-copy h2,
.xrf-feature h2,
.applications-section h2,
.standards-section h2,
.contact-details h2,
.counterfeit-copy h2 {
  margin: 0 0 32px;
  font-size: clamp(2.5rem, 4.4vw, 5.25rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.about-copy > p:not(.eyebrow),
.story-copy p,
.xrf-feature p,
.counterfeit-copy p,
.standards-copy p {
  max-width: 760px;
  margin: 0 0 20px;
  color: #343531;
  font-size: 1.08rem;
  line-height: 1.75;
}

.text-link {
  display: inline-flex;
  align-items: center;
  margin-top: 26px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--ink);
  font-weight: 750;
}

.services-section {
  padding-block: clamp(100px, 10vw, 150px);
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(200px, 0.65fr) minmax(500px, 1.35fr);
  align-items: start;
  margin-bottom: 70px;
}

.section-heading .eyebrow {
  margin-top: 11px;
}

.section-heading h2 {
  max-width: 900px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.service-card {
  position: relative;
  min-height: 330px;
  padding: clamp(34px, 4.5vw, 68px);
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  transition: color 250ms ease, background 250ms ease;
}

.service-card:hover {
  color: var(--paper);
  background: var(--ink);
}

.service-card > span {
  color: var(--green-dark);
  font-weight: 800;
}

.service-card:hover > span {
  color: var(--green);
}

.service-card h3 {
  max-width: 480px;
  margin: 58px 0 20px;
  font-size: clamp(1.8rem, 3vw, 3.2rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.045em;
}

.service-card p {
  max-width: 540px;
  margin: 0;
  color: var(--charcoal);
  font-size: 1rem;
  line-height: 1.65;
}

.service-card:hover p {
  color: var(--paper-deep);
}

.services-section > .text-link {
  margin-top: 42px;
}

.mission-teaser {
  padding-block: clamp(110px, 12vw, 180px);
  border-top: 1px solid var(--line);
}

.mission-teaser blockquote {
  max-width: 1180px;
  margin-top: 0;
  font-size: clamp(3rem, 6vw, 7rem);
}

.contact-band {
  padding: clamp(70px, 8vw, 120px) max(32px, calc((100vw - var(--shell)) / 2));
  color: var(--paper);
  background: var(--forest);
}

.contact-band .light {
  color: var(--green);
}

.contact-band > div {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 50px;
}

.contact-band h2 {
  max-width: 880px;
  margin: 0;
}

.button-light {
  flex: 0 0 auto;
  color: var(--ink);
  background: var(--green);
  border-color: var(--green);
}

.button-light:hover {
  color: var(--ink);
  background: var(--paper);
  border-color: var(--paper);
}

.site-footer {
  color: var(--paper);
  background: var(--ink);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 0.7fr;
  gap: 60px;
  width: min(calc(100% - 64px), var(--shell));
  margin-inline: auto;
  padding-block: 80px;
}

.footer-main > div:first-child p {
  max-width: 430px;
  margin: 24px 0 0;
  color: #b9bab5;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links > span {
  margin-bottom: 10px;
  color: var(--green);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer-links a {
  color: #d8d7d2;
}

.footer-links a:hover {
  color: var(--green);
}

.footer-bottom {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  width: min(calc(100% - 64px), var(--shell));
  min-height: 105px;
  margin-inline: auto;
  padding: 20px 0 24px;
  border-top: 1px solid rgba(255,255,255,.2);
}

.footer-bottom > p {
  margin: 0;
  color: #8c8e88;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.footer-bottom > p:last-child {
  text-align: right;
}

.powered-by {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  justify-self: center;
}

.powered-by > span {
  color: #a6a8a2;
  font-size: 0.67rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.powered-by img {
  width: 92px;
  height: auto;
  margin-inline: auto;
}

.page-intro {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: clamp(50px, 8vw, 130px);
  align-items: end;
  min-height: 620px;
  padding: clamp(90px, 10vw, 145px) 0 90px;
  border-bottom: 1px solid var(--ink);
}

.page-intro .eyebrow {
  margin-bottom: 45px;
}

.page-intro h1 {
  max-width: 980px;
  font-size: clamp(4rem, 7.2vw, 7.4rem);
}

.page-lead {
  margin: 0 0 8px;
  padding-left: 28px;
  border-left: 1px solid var(--green-dark);
  font-size: clamp(1.08rem, 1.5vw, 1.35rem);
  line-height: 1.55;
}

.split-story {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  gap: 80px;
  padding-block: 120px;
}

.story-index {
  color: var(--green-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.story-copy h2 {
  max-width: 850px;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-bottom: 120px;
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.principles-grid article {
  min-height: 320px;
  padding: 42px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.principles-grid span,
.steps-grid span {
  color: var(--green-dark);
  font-weight: 800;
}

.principles-grid h3,
.steps-grid h3 {
  margin: 95px 0 12px;
  font-size: 2rem;
  line-height: 1;
  letter-spacing: -0.04em;
}

.principles-grid p,
.steps-grid p {
  margin: 0;
  color: var(--charcoal);
}

.next-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  margin: 0 0 120px;
  padding: 36px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.next-link p {
  margin: 0;
  color: var(--charcoal);
}

.next-link a {
  display: flex;
  align-items: center;
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  font-weight: 750;
}

.activity-list {
  margin: 100px 0 120px;
  border-top: 1px solid var(--ink);
}

.activity-list article {
  display: grid;
  grid-template-columns: 90px minmax(300px, 0.9fr) minmax(360px, 1.1fr);
  gap: 44px;
  align-items: start;
  padding: 48px 0;
  border-bottom: 1px solid var(--ink);
}

.activity-number,
.activity-tag {
  color: var(--green-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.activity-tag {
  margin: 0 0 13px;
}

.activity-list h2 {
  margin: 0;
  font-size: clamp(1.9rem, 3.3vw, 3.7rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

.activity-list article > p:last-child {
  max-width: 610px;
  margin: 0;
  color: var(--charcoal);
  font-size: 1.05rem;
  line-height: 1.75;
}

.xrf-feature {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: clamp(60px, 8vw, 130px);
  align-items: center;
  padding-block: 120px;
}

.xrf-visual {
  position: relative;
  min-height: 610px;
}

.xrf-visual img {
  width: 100%;
  height: 610px;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05);
}

.xrf-visual span {
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 14px 18px;
  color: var(--paper);
  background: var(--ink);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.benefits-section,
.standards-section,
.verification-steps {
  padding-block: 120px;
  border-top: 1px solid var(--ink);
}

.section-heading.compact {
  margin-bottom: 60px;
}

.benefit-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.benefit-list li {
  display: grid;
  grid-template-columns: 90px 1fr;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.benefit-list span {
  color: var(--green-dark);
  font-weight: 800;
}

.benefit-list p {
  max-width: 920px;
  margin: 0;
  font-size: clamp(1.2rem, 2.2vw, 2rem);
  line-height: 1.35;
  letter-spacing: -0.025em;
}

.applications-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 100px;
  padding-block: 120px;
  border-top: 1px solid var(--ink);
}

.applications-section ul {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.applications-section li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-weight: 650;
}

.applications-section li::before {
  margin-right: 18px;
  color: var(--green-dark);
  content: "↳";
}

.standards-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 100px;
}

.standards-images {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.standards-images figure {
  margin: 0;
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
}

.standards-images img {
  width: 100%;
  max-height: 310px;
  object-fit: contain;
}

.standards-images figcaption {
  margin-top: 14px;
  color: var(--charcoal);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.counterfeit-hero {
  position: relative;
  height: min(72vw, 820px);
  min-height: 580px;
  margin: 100px 0;
  overflow: hidden;
}

.counterfeit-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.08);
}

.counterfeit-label {
  position: absolute;
  padding: 9px 12px;
  color: var(--paper);
  background: rgba(17,19,16,.82);
  border-left: 3px solid var(--green);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.counterfeit-label span {
  margin-right: 8px;
  color: var(--green);
}

.label-a { top: 16%; left: 7%; }
.label-b { top: 47%; right: 7%; }
.label-c { bottom: 11%; left: 42%; }

.counterfeit-copy {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  gap: 80px;
  padding-bottom: 120px;
}

.counterfeit-copy aside {
  max-width: 300px;
  color: var(--green-dark);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.steps-grid article {
  min-height: 300px;
  padding: 38px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(70px, 10vw, 150px);
  padding-block: 120px;
}

.contact-details h2 {
  max-width: 600px;
}

.contact-item {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.contact-item > span {
  display: block;
  margin-bottom: 5px;
  color: var(--green-dark);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact-item a,
.contact-item p {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 650;
}

.contact-note {
  max-width: 540px;
  margin-top: 34px;
  color: var(--charcoal);
}

.contact-form {
  padding: clamp(32px, 5vw, 62px);
  background: var(--white);
  border: 1px solid var(--ink);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.contact-form label:not(.privacy-check) {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 24px;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 13px 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--ink);
  border-radius: 0;
  outline: none;
  font-size: 1rem;
  text-transform: none;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-bottom-color: var(--green-dark);
  box-shadow: 0 2px 0 var(--green-dark);
}

.privacy-check {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin: 8px 0 28px;
  color: var(--charcoal);
  font-size: 0.8rem;
}

.privacy-check input {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
}

.contact-form .button {
  width: 100%;
}

.form-hint {
  margin: 13px 0 0;
  color: var(--charcoal);
  font-size: 0.72rem;
  text-align: center;
}

.map-section {
  height: 540px;
  margin-bottom: 120px;
  border: 1px solid var(--ink);
}

.map-section iframe {
  width: 100%;
  height: 100%;
  border: 0;
  filter: grayscale(1) contrast(.95);
}

@keyframes reveal-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-copy > *,
.page-intro-copy > * {
  animation: reveal-up 620ms both;
}

.hero-copy > :nth-child(2),
.page-intro-copy > :nth-child(2) { animation-delay: 80ms; }
.hero-copy > :nth-child(3) { animation-delay: 140ms; }
.hero-copy > :nth-child(4) { animation-delay: 190ms; }
.hero-copy > :nth-child(5) { animation-delay: 240ms; }

@media (max-width: 1180px) {
  .desktop-nav {
    gap: 18px;
  }

  .desktop-nav a {
    font-size: 0.84rem;
  }

  .hero {
    grid-template-columns: minmax(440px, 0.9fr) minmax(480px, 1.1fr);
  }

  .hero h1 {
    font-size: clamp(3.8rem, 6.7vw, 5.3rem);
  }

  .hero-copy {
    padding-inline: 40px;
  }

  .page-intro {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .activity-list article {
    grid-template-columns: 60px minmax(260px, .8fr) minmax(320px, 1.2fr);
    gap: 28px;
  }
}

@media (max-width: 900px) {
  .section-shell,
  .header-inner,
  .trust-strip,
  .footer-main,
  .footer-bottom {
    width: min(calc(100% - 40px), var(--shell));
  }

  .header-inner {
    min-height: 68px;
  }

  .desktop-nav {
    display: none;
  }

  .mobile-menu {
    position: relative;
    display: block;
  }

  .mobile-menu summary {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 44px;
    padding: 10px;
    list-style: none;
    cursor: pointer;
  }

  .mobile-menu summary::-webkit-details-marker {
    display: none;
  }

  .mobile-menu summary span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--ink);
    transition: transform 180ms ease, opacity 180ms ease;
  }

  .mobile-menu[open] summary span:first-child { transform: translateY(7px) rotate(45deg); }
  .mobile-menu[open] summary span:nth-child(2) { opacity: 0; }
  .mobile-menu[open] summary span:last-child { transform: translateY(-7px) rotate(-45deg); }

  .mobile-menu nav {
    position: fixed;
    top: 68px;
    right: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    padding: 20px;
    background: var(--paper);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--ink);
    box-shadow: 0 18px 40px rgba(17,19,16,.16);
  }

  .mobile-menu nav a {
    padding: 13px 4px;
    border-bottom: 1px solid var(--line);
    font-weight: 700;
  }

  .mobile-menu nav a.active {
    color: var(--green-dark);
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    min-height: auto;
    padding: 78px 24px 70px;
  }

  .hero h1,
  .page-intro h1 {
    font-size: clamp(3.8rem, 13.2vw, 6.2rem);
  }

  .hero-visual,
  .hero-visual img {
    min-height: 680px;
  }

  .trust-strip {
    grid-template-columns: 1fr;
  }

  .trust-strip div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .about-section,
  .section-heading,
  .page-intro,
  .split-story,
  .xrf-feature,
  .applications-section,
  .standards-section,
  .counterfeit-copy,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .about-section,
  .xrf-feature,
  .applications-section,
  .standards-section,
  .counterfeit-copy,
  .contact-layout {
    gap: 55px;
  }

  .about-image-wrap,
  .about-image-wrap img {
    min-height: 590px;
  }

  .section-heading {
    margin-bottom: 40px;
  }

  .service-card {
    min-height: 290px;
  }

  .contact-band > div {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
  }

  .footer-main > div:first-child {
    grid-column: 1 / -1;
  }

  .page-intro {
    gap: 55px;
    min-height: auto;
    padding: 100px 0 70px;
  }

  .page-lead {
    max-width: 700px;
  }

  .principles-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .principles-grid article,
  .steps-grid article {
    min-height: 250px;
  }

  .principles-grid h3,
  .steps-grid h3 {
    margin-top: 55px;
  }

  .activity-list article {
    grid-template-columns: 55px 1fr;
  }

  .activity-list article > p:last-child {
    grid-column: 2;
  }

  .counterfeit-hero {
    height: 700px;
    margin-block: 70px;
  }
}

@media (max-width: 620px) {
  .section-shell,
  .header-inner,
  .trust-strip,
  .footer-main,
  .footer-bottom {
    width: min(calc(100% - 32px), var(--shell));
  }

  .wordmark {
    font-size: 1.1rem;
  }

  .hero-copy {
    padding: 62px 20px 54px;
  }

  .eyebrow {
    margin-bottom: 26px;
    font-size: 0.67rem;
  }

  .hero h1,
  .page-intro h1 {
    font-size: clamp(3.2rem, 16.4vw, 5.2rem);
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-visual,
  .hero-visual img {
    min-height: 520px;
  }

  .note-one { top: 10%; }
  .note-two { bottom: 10%; }

  .about-image-wrap,
  .about-image-wrap img {
    min-height: 470px;
  }

  .about-copy h2,
  .section-heading h2,
  .mission-teaser blockquote,
  .contact-band h2,
  .story-copy h2,
  .xrf-feature h2,
  .applications-section h2,
  .standards-section h2,
  .contact-details h2,
  .counterfeit-copy h2 {
    font-size: clamp(2.45rem, 12.4vw, 4rem);
  }

  .service-grid {
    grid-template-columns: 1fr;
  }

  .mission-teaser blockquote {
    margin-inline: 0;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-main > div:first-child {
    grid-column: auto;
  }

  .footer-bottom {
    grid-template-columns: 1fr;
    gap: 24px;
    justify-items: center;
    padding-block: 28px;
  }

  .footer-bottom > p:last-child,
  .footer-bottom > p {
    text-align: center;
  }

  .powered-by {
    grid-row: 1;
  }

  .page-intro {
    padding-top: 70px;
  }

  .split-story,
  .xrf-feature,
  .benefits-section,
  .applications-section,
  .standards-section,
  .verification-steps,
  .contact-layout {
    padding-block: 80px;
  }

  .principles-grid,
  .activity-list,
  .counterfeit-copy {
    margin-bottom: 80px;
  }

  .next-link {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 80px;
  }

  .activity-list article {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .activity-list article > p:last-child {
    grid-column: 1;
  }

  .xrf-visual,
  .xrf-visual img {
    min-height: 480px;
    height: 480px;
  }

  .benefit-list li {
    grid-template-columns: 50px 1fr;
  }

  .counterfeit-hero {
    min-height: 520px;
    height: 125vw;
  }

  .counterfeit-hero img {
    object-position: 58% center;
  }

  .field-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .contact-form {
    padding: 28px 22px;
  }

  .map-section {
    height: 430px;
    margin-bottom: 80px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}