@font-face {
  font-family: "Hero Source Han Serif";
  src: url("assets/hero-source-han-serif.woff2") format("woff2");
  font-style: normal;
  font-weight: 250 900;
  font-display: swap;
}

:root {
  color-scheme: light;
  --font-system: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: "Hero Source Han Serif", "Source Han Serif SC", serif;
  --color-heading: #36475a;
  --color-copy: #4e596b;
  --color-metric: #405e80;
  --color-section-heading: #405e80;
  --color-label: #4c5866;
  --color-muted: #878f99;
  --surface-warm: #faf9f5;
  --surface-fact: #f0f9ff;
  --content-width: 960px;
  --page-gutter: 32px;
  --card-radius: 22px;
  --hero-gradient: linear-gradient(-17deg, #d0e0f0 14.5%, #abc4e2 65%, #97b4d4 85.5%);
  --band-gradient: linear-gradient(90deg, #d0e0f0 0%, #bdd4ee 26%, #afc8e5 50%, #8faccc 100%);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-width: 280px;
  min-height: 100svh;
  color: var(--color-copy);
  background: var(--surface-warm);
  font-family: var(--font-system);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p, dl, dd, figure { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--color-heading); outline-offset: 5px; }
[aria-disabled="true"] { cursor: not-allowed; }

/* This is a global header, independent of the Hero content. */
.site-header {
  background: var(--hero-gradient) center top / 100% 810px no-repeat;
  min-height: 90px;
  padding: 14px 20px 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand__symbol { width: 48px; height: 47px; object-fit: contain; }
.brand__wordmark { width: 145px; height: 48px; object-fit: contain; }
.site-nav { display: flex; align-items: center; gap: 18px; }
.site-nav a { width: 84px; padding-block: 12px; text-align: center; color: white; font-size: 16px; font-weight: 400; }
.language-switch { position: relative; flex: 0 0 auto; align-self: center; }
.language-switch__toggle { display: grid; place-items: center; width: 44px; height: 44px; padding: 10px; border: 0; background: transparent; cursor: pointer; }
.language-switch img { width: 24px; height: auto; }
.language-switch__options { position: absolute; z-index: 5; top: 100%; right: 0; display: flex; gap: 4px; width: 104px; margin-top: 6px; padding: 6px; border: 1px solid rgb(64 94 128 / 15%); border-radius: 10px; background: #fff; box-shadow: 0 6px 20px rgb(54 71 90 / 18%); }
.language-switch__options::before { content: ""; position: absolute; right: 16px; top: -5px; width: 8px; height: 8px; background: #fff; transform: rotate(45deg); }
.language-switch__options::after { content: ""; position: absolute; inset: -8px 0 auto; height: 8px; }
.site-nav .language-switch__options a { display: grid; place-items: center; width: 44px; min-height: 44px; padding: 10px; border-radius: 6px; }
.language-switch__options a:hover, .language-switch__options a:focus-visible { background: #edf3f9; }
.menu-toggle { border: 1px solid #fff; border-radius: 24px; padding: 8px 16px; color: #fff; background: transparent; cursor: pointer; }

/* The 1440 × 810 reference is a 90px header plus a 720px Hero.
   Content flows in two columns; spacing expresses the relationships. */
.hero { min-height: 720px; padding: 49px 32px 143px; background: var(--hero-gradient) center -90px / 100% 810px no-repeat #d0e0f0; }
.hero__layout { max-width: 910px; margin-inline: auto; display: grid; grid-template-columns: 420fr 417fr; gap: 73px; align-items: start; }
.hero__copy { min-width: 0; padding: 101px 0 0 12px; }
.hero__eyebrow { color: #fff; font-family: var(--font-serif); font-size: 20px; font-weight: 300; line-height: 1.4; }
.hero h1 { margin-top: 12px; color: var(--color-heading); font-family: var(--font-serif); font-size: clamp(40px, 3.9vw, 56px); font-weight: 300; line-height: 1.2; }
.hero__description { margin-top: 8px; font-size: 18px; font-weight: 300; line-height: 24px; }
.metrics { max-width: 376px; margin-top: 40px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.metric { min-width: 0; display: flex; flex-direction: column; align-items: flex-start; }
.metric__value { order: -1; width: min(100%, 113px); border-bottom: 1px solid rgb(255 255 255 / 60%); color: var(--color-metric); font-family: var(--font-serif); font-size: 32px; font-weight: 900; line-height: 46px; }
.metric--with-link { width: max-content; }
.metric--with-link dt { text-align: right; }
.metric__link { align-self: flex-end; }
.metric dt { margin-top: 8px; color: #fff; font-size: 14px; line-height: 20px; white-space: nowrap; }
.research-link { display: block; width: fit-content; margin: 4px 0 0 auto; color: rgb(106 133 160 / 70%); font-size: 10px; line-height: 15px; text-decoration: underline; text-underline-offset: 2px; }
.hero__cta { display: flex; align-items: center; justify-content: center; width: 156px; min-height: 44px; margin-top: 22px; padding: 8px 12px; border: 1px solid #fff; border-radius: 80px; color: #fefefe; font-family: var(--font-serif); font-size: 18px; font-weight: 700; line-height: 26px; }
.hero__product { min-width: 0; width: 100%; }
.hero__product img { width: 397px; height: auto; aspect-ratio: 397 / 503; object-fit: contain; }
.hero__product figcaption { max-width: 397px; margin-top: 9px; color: #929292; font-size: 14px; line-height: 16px; text-align: center; }

/* Shared section rules. The fact bar overlaps the boundary in normal flow. */
.content-container { width: min(var(--content-width), calc(100% - 2 * var(--page-gutter))); margin-inline: auto; }
.product-facts { position: relative; margin-top: -39px; background: var(--surface-fact); border-radius: 100px; padding-inline: 22px; box-shadow: 0 0 15px rgb(31 46 62 / 15%); }
.fact-list { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); }
.fact { min-width: 0; min-height: 79px; display: flex; flex-direction: column; justify-content: center; gap: 6px; text-align: center; padding: 10px 6px; }
.fact + .fact { border-inline-start: 1px solid rgb(183 205 228 / 40%); }
.fact dd { order: -1; color: var(--color-label); font-size: 18px; font-weight: 700; line-height: 25px; }
.fact dd.fact__value--compact { font-size: 12px; }
.fact__value--compact span { white-space: nowrap; }
.fact dt { color: #9d9d9d; font-size: 12px; line-height: 18px; }
.use-cases { padding-block: 48px 70px; background: var(--surface-warm); }
.section-heading__eyebrow { display: flex; align-items: center; gap: 14px; color: var(--color-muted); font-family: var(--font-serif); font-size: 14px; font-weight: 300; line-height: 20px; }
.section-heading__eyebrow img { width: 30px; height: 30px; flex: 0 0 auto; object-fit: contain; }
.section-heading :is(h2, h3) { margin-top: 2px; color: var(--color-section-heading); font-family: var(--font-serif); font-size: 32px; font-weight: 400; line-height: 46px; }
.use-case-list { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 15px; margin: 34px 0 0; padding: 0; list-style: none; }
.use-case-list li { min-width: 0; }
.use-case-card { display: grid; isolation: isolate; min-height: 180px; height: 100%; aspect-ratio: 1; border: 1px solid #e0e0e0; border-radius: var(--card-radius); overflow: hidden; background: #fff; }
.use-case-card > img, .use-case-card > figcaption { grid-area: 1 / 1; }
.use-case-card > img { width: 100%; height: 100%; min-height: 0; object-fit: cover; }
.use-case-card > figcaption { z-index: 1; align-self: end; padding: 16px 17px; }
.use-case-card__play { grid-area: 1 / 1; z-index: 2; align-self: stretch; justify-self: stretch; display: grid; place-items: start; min-width: 0; min-height: 0; padding: 11px; border: 0; border-radius: inherit; background: transparent; cursor: pointer; }
.use-case-card__play img { width: 32px; height: 32px; }
.use-case-card__play:focus-visible { outline-offset: -4px; }
.scene-video-open { overflow: hidden; }
.scene-video-dialog { width: min(460px, calc(100% - 32px)); max-height: calc(100svh - 32px); margin: auto; padding: 12px; border: 1px solid rgb(255 255 255 / 40%); border-radius: 16px; color: var(--color-heading); background: var(--surface-warm); box-shadow: 0 16px 64px rgb(0 0 0 / 30%); }
.scene-video-dialog::backdrop { background: rgb(15 27 42 / 75%); }
.scene-video-dialog__header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.scene-video-dialog__header h2 { font-family: var(--font-system); font-size: 16px; line-height: 1.5; }
.scene-video-dialog__close { flex: 0 0 auto; min-height: 44px; padding: 8px 12px; border: 1px solid rgb(64 94 128 / 20%); border-radius: 8px; color: var(--color-metric); background: #fff; cursor: pointer; }
.scene-video-dialog__player { display: block; width: 100%; max-height: calc(100svh - 180px); aspect-ratio: 9 / 16; object-fit: contain; border-radius: 8px; background: #000; }
.scene-video-dialog__status { margin-top: 8px; font-size: 13px; line-height: 1.5; }
.use-case-card h3 { color: var(--color-label); font-size: 18px; font-weight: 700; line-height: 22px; }
.use-case-card p { margin-top: 5px; color: #595959; font-size: 13px; line-height: 16px; }

/* Blue information bands share their heading, background and content width. */
.skin-barrier, .technology-team { background: var(--band-gradient); }
.section-heading--on-blue .section-heading__eyebrow { color: #fff; }
.section-heading--on-blue :is(h2, h3) { color: var(--color-heading); }
.section-heading__description { margin-top: 13px; color: var(--color-label); font-size: 13px; line-height: 1.6; }
.skin-barrier__layout { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 53px; min-height: 232px; padding-block: 30px 33px; background: url("assets/skin-barrier.png") right center / 561px 232px no-repeat; }
.skin-barrier__questions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 17px; align-items: start; padding-top: 6px; }
.question-card { min-width: 0; min-height: 135px; padding: 14px 19px 10px; border: 1px solid rgb(224 224 224 / 33%); border-radius: var(--card-radius); background: rgb(255 255 255 / 15%); }
.question-card h3 { color: var(--color-section-heading); font-size: 18px; font-weight: 400; line-height: 22px; }
.question-card ul { margin: 18px 0 0; padding-left: 14px; color: #fff; font-size: 13px; line-height: 24px; }
.question-card li::marker { color: var(--color-section-heading); }

.technology { background: var(--surface-warm); scroll-margin-top: 24px; }
.technology__layout { display: grid; grid-template-columns: calc(50% + 2px) minmax(0, 1fr); }
.technology__visual { min-width: 0; min-height: 730px; }
.technology__visual img { width: 100%; height: 100%; object-fit: cover; }
.technology__copy { min-width: 0; width: 100%; max-width: 549px; padding: 46px 36px 31px; }
.technology__copy .section-heading h2 { font-size: 31px; line-height: 45px; }
.technology :is(h2, h3) > span { display: inline-block; max-width: 100%; }
.technology-tags { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 9px 0 0; list-style: none; }
.technology-tags li { padding: 4px 10px; border: 1px solid #ebebeb; border-radius: 12px; background: #fff; color: #545e6b; font-size: 11px; line-height: 14px; }
.research-cards { display: grid; gap: 24px; max-width: 441px; padding: 0; margin: 36px 0 0; list-style: none; }
.research-card { position: relative; isolation: isolate; min-height: 153px; padding: 25px 13px 18px; border: 1px solid #e0e0e0; border-radius: var(--card-radius); background: #fcfbf7; box-shadow: 0 2px 22px rgb(0 0 0 / 10%); }
.research-card h3 { color: var(--color-section-heading); font-size: 18px; line-height: 22px; font-weight: 700; }
.research-card__body { max-width: 379px; margin-top: 14px; color: #666; font-size: 12px; line-height: 18px; }
.research-card__source { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; margin-top: 13px; }
.research-card__source img { width: 90px; height: 1px; }
.research-card__source a { color: #bfd6ef; font-size: 9px; line-height: 12px; font-weight: 700; }
.research-card__number { position: absolute; z-index: -1; right: 14px; bottom: -4px; color: rgb(224 224 224 / 30%); font-size: 72px; font-weight: 700; line-height: 1.2; pointer-events: none; }
.technology-team__content { min-height: 232px; padding-block: 30px 33px; background: url("assets/huaxi-emblem.png") right center / 374px 232px no-repeat; }
.technology-team__facts { display: grid; grid-template-columns: repeat(2, minmax(0, 250px)); gap: 18px; margin-top: 13px; }
.technology-team__facts ul { padding: 0; margin: 0; list-style: none; color: var(--color-label); font-size: 13px; line-height: 26px; }

/* Native table rows keep both comparison columns aligned at every width. */
.product-compare { background: var(--surface-warm); scroll-margin-top: 24px; }
.product-compare__layout { display: grid; grid-template-columns: 200px minmax(0, 1fr); align-items: start; min-height: 457px; padding-block: 44px 62px; }
.product-compare__intro { min-width: 0; }
.product-compare__description { max-width: 187px; margin-top: 7px; color: #566373; font-size: 13px; line-height: 26px; }
.comparison-viewport { display: flow-root; min-width: 0; }
.comparison-board { --label-width: 132px; --product-width: 296px; position: relative; isolation: isolate; min-width: 0; margin: 88px 0 0 54px; padding-bottom: 8px; border-radius: var(--card-radius); background: #f7f6f2; box-shadow: inset 0 0 0 1px #e0e6ed; }
.comparison-board::before { content: ""; position: absolute; z-index: 0; top: -49px; bottom: -10px; left: var(--label-width); width: var(--product-width); border: 1px solid rgb(255 255 255 / 80%); border-radius: var(--card-radius); background: linear-gradient(199deg, #98b4d4 14%, #9fb9d6 50.5%, #89a6c6 87%); box-shadow: 0 4px 15px rgb(89 131 178 / 50%), inset 0 0 8px #fff; pointer-events: none; }
.comparison-table { position: relative; width: 100%; border-collapse: collapse; table-layout: fixed; text-align: left; }
.comparison-table__label-column { width: var(--label-width); }
.comparison-table__product-column { width: var(--product-width); }
.comparison-table thead { height: 47px; }
.comparison-table__product-heading { position: relative; padding: 0 32px; vertical-align: top; color: #fff; font-size: 27px; line-height: 33px; font-weight: 700; }
.comparison-table__product-heading > span { display: block; margin-top: -2px; }
.comparison-table__product-heading img { position: absolute; right: 36px; bottom: calc(100% - 31px); width: 83px; height: 106px; object-fit: contain; }
.comparison-table__other-heading { padding: 20px 30px 5px; color: var(--color-heading); font-size: 18px; line-height: 22px; font-weight: 400; }
.comparison-table tbody th { padding: 9px 12px 9px 30px; color: #5983b2; font-size: 18px; line-height: 22px; font-weight: 400; }
.comparison-table tbody td { padding-block: 9px; font-size: 14px; line-height: 18px; }
.comparison-table__product { padding-inline: 18px 24px; color: #fff; }
.comparison-table__other { padding-inline: 16px 24px; color: var(--color-heading); }
.comparison-table td p { min-height: 34px; padding: 8px 14px; border-radius: 9px; }
.comparison-table__product p { background: rgb(255 255 255 / 12%); box-shadow: inset 0 0 0 1px rgb(255 255 255 / 33%); }
.comparison-table__other p { background: rgb(178 178 175 / 12%); }

.usage-experience { padding-block: 44px 76px; background: #ebf1f9; }
.usage-layout { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; min-height: 440px; }
.usage-feature-list { display: grid; gap: 21px; margin: 33px 30px 0 0; padding: 0; list-style: none; }
.usage-feature-list li { display: grid; grid-template-columns: 36px minmax(0, 1fr); column-gap: 18px; row-gap: 14px; align-content: start; min-height: 90px; padding-bottom: 27px; background: url("assets/usage-divider.svg") left calc(100% - 5px) / 100% 1px no-repeat; }
.usage-feature-list li:last-child { min-height: 61px; padding-bottom: 0; background: none; }
.usage-feature__number { grid-row: span 2; display: grid; place-items: center; width: 36px; height: 36px; margin-top: 6px; background: url("assets/usage-number-circle.svg") center / contain no-repeat; color: #878787; font-size: 18px; font-weight: 700; }
.usage-feature-list h3, .usage-steps h4 { margin: 0; color: #405e80; font-size: 18px; font-weight: 700; line-height: 22px; }
.usage-feature-list p, .usage-steps p { color: #404040; font-size: 12px; line-height: 15px; }
.usage-guide { margin: 1px 9px 0; padding: 25px 36px 27px; border-radius: 22px; background: #f0f6fd; box-shadow: 0 4px 22px #d2e0f0; }
.usage-guide > h3 { margin-inline: 9px; color: #405e80; font-size: 27px; font-weight: 700; line-height: 34px; }
.usage-steps { display: grid; gap: 42px; margin: 23px 9px 0; padding: 0; list-style: none; }
.usage-steps li { display: grid; grid-template-columns: 18px minmax(0, 1fr); column-gap: 9px; row-gap: 12px; }
.usage-step__number { grid-row: span 2; align-self: center; color: #73a2ce; font-size: 18px; font-weight: 700; line-height: 22px; }
.usage-notice { margin-top: 15px; padding: 13px 15px; border: 1px solid #dde6ef; border-radius: 8px; background: #e4effb; color: #405e80; }
.usage-notice h4 { margin: 0; font-size: 14px; font-weight: 700; line-height: 18px; }
.usage-notice p { margin-top: 7px; font-size: 12px; line-height: 15px; }
.product-experience { margin-top: 49px; }
.experience-panel { margin-top: 21px; padding: 18px 24px; border-radius: 16px; background: linear-gradient(253deg, #c8d8ee 21.5%, #dce6f1 75.5%); }
.experience-metrics { display: grid; grid-template-columns: 304px repeat(4, minmax(0, 1fr)); min-height: 116px; }
.experience-metric { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding-inline: 12px; border-left: 1px solid rgb(138 168 200 / 25%); }
.experience-metric dt { color: #4a6b90; font-size: 13px; line-height: 1.5; text-align: center; }
.experience-metric dd { order: -1; display: flex; flex-direction: column; align-items: center; gap: 6px; color: #405e80; font-family: var(--font-serif); font-size: 36px; font-weight: 700; line-height: 1; letter-spacing: -1px; }
.experience-metric dd::after { content: ""; width: 32px; height: 1px; background: rgb(74 143 203 / 30%); }
.experience-metric--featured { align-items: flex-start; padding: 0 24px 0 0; border-left: 0; }
.experience-metric--featured dd { align-items: flex-start; font-size: 72px; letter-spacing: -2px; }
.experience-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 12px; }
.experience-meta { display: flex; flex-wrap: wrap; gap: 12px; margin: 0; padding: 0; list-style: none; }
.experience-meta li { display: flex; align-items: center; gap: 6px; padding: 4px 11px; border: 1px solid rgb(255 255 255 / 60%); border-radius: 20px; background: rgb(255 255 255 / 45%); color: #3a5a80; font-size: 12px; line-height: 18px; }
.experience-meta img { flex: 0 0 12px; }
.experience-footer > p { color: rgb(74 107 144 / 60%); font-size: 12px; line-height: 18px; }

.faq { padding-block: 44px 50px; background: var(--surface-warm); }
.faq-list { width: min(100%, 480px); margin-top: 7px; }
.faq-item + .faq-item { border-top: 1px solid rgb(64 94 128 / 18%); }
.faq-item:last-child { border-bottom: 1px solid rgb(64 94 128 / 18%); }
.faq-question { display: flex; align-items: center; justify-content: space-between; gap: 24px; width: 100%; min-height: 65px; padding: 18px 0; border: 0; background: transparent; color: #6f6f6f; font-family: var(--font-system); font-size: 15px; font-weight: 400; line-height: 1.5; text-align: left; cursor: pointer; }
.faq-question__icon { flex: 0 0 16px; font-size: 24px; font-weight: 300; line-height: 29px; text-align: center; }
.faq-question:hover, .faq-question[aria-expanded="true"] { color: var(--color-metric); }
.faq-question:focus-visible { outline-offset: 4px; }
.faq-answer { padding: 8px 32px 24px 0; color: var(--color-copy); font-size: 14px; line-height: 1.85; overflow-wrap: anywhere; }
.faq-answer > * + * { margin-top: 12px; }
.faq-answer h4 { margin: 20px 0 8px; color: var(--color-metric); font-size: 14px; font-weight: 700; line-height: 1.7; }
.faq-answer h4:first-child { margin-top: 0; }
.faq-more { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; margin-top: 30px; padding: 11px 24px; border: 1px solid var(--color-metric); border-radius: 4px; color: var(--color-metric); font-size: 14px; line-height: 20px; text-decoration: none; }

.site-footer { padding-block: 32px 50px; border-top: 1px solid rgb(255 255 255 / 25%); background: linear-gradient(90deg, #4a6285, #3d5473); color: rgb(255 255 255 / 75%); font-size: 14px; line-height: 17px; }
.site-footer__container { width: min(1120px, calc(100% - 2 * var(--page-gutter))); margin-inline: auto; }
.site-footer__columns { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 4fr); }
.site-footer__brand { max-width: 420px; padding-right: 24px; }
.site-footer h2 { margin-bottom: 12px; color: #fff; font-size: 16px; font-weight: 700; line-height: 19px; }
.site-footer address { display: grid; gap: 12px; font-style: normal; }
.site-footer__emails { display: flex; flex-wrap: wrap; column-gap: 4px; row-gap: 12px; }
.site-footer__emails > span { white-space: nowrap; }
.site-footer__legal { margin-top: 16px; padding-top: 12px; border-top: 1px solid rgb(255 255 255 / 20%); color: rgb(255 255 255 / 60%); font-size: 12px; line-height: 15px; }
.site-footer__legal small { font-size: inherit; }
.site-footer__legal a { display: inline-block; }
.site-footer a:hover { text-decoration: underline; text-underline-offset: 3px; }
.site-footer a:focus-visible { outline-color: #fff; }

/* Absolute positioning is reserved for overlays and decorative elements. */
.skip-link { position: absolute; z-index: 3; top: 8px; left: 16px; padding: 12px 16px; background: #fff; color: var(--color-heading); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

@media (max-width: 1050px) {
  .site-header { padding-inline: 24px; }
  .site-nav { gap: 8px; }
  .site-nav a { width: auto; padding-inline: 8px; font-size: 14px; }
  .hero { padding-inline: 40px; }
  .hero__layout { gap: 32px; grid-template-columns: 1.1fr 1fr; }
  .hero__copy { padding: 80px 0 0; }
  .hero__eyebrow { font-size: 17px; }
  .hero h1 { font-size: clamp(36px, 4.4vw, 46px); }
  .hero__description { font-size: 16px; }
  .metrics { gap: 10px; }
  .metric__value { font-size: 29px; }
  .metric dt { font-size: 12px; }
  .hero__product figcaption { font-size: 12px; line-height: 1.5; }
  .product-facts { padding-inline: 12px; }
  .fact { padding-inline: 4px; }
  .use-case-card > figcaption { padding-inline: 12px; }
  .skin-barrier__layout { grid-template-columns: 270px minmax(0, 1fr); gap: 24px; }
  .question-card { padding-inline: 14px; }
  .technology__copy { padding-inline: 28px; }
  .technology__copy .section-heading h2 { font-size: 28px; line-height: 1.5; }
}

@media (max-width: 960px) {
  .usage-layout { gap: 24px; }
  .usage-feature-list { margin-right: 0; }
  .usage-guide { margin-inline: 0; padding-inline: 24px; }
  .usage-guide > h3, .usage-steps { margin-inline: 0; }
  .experience-metrics { grid-template-columns: minmax(200px, 1.5fr) repeat(4, minmax(0, 1fr)); }
  .experience-metric { padding-inline: 8px; }
  .experience-metric dd { font-size: 30px; }
  .experience-metric--featured dd { font-size: 60px; }
  .experience-footer { flex-wrap: wrap; }
  .product-compare__layout { grid-template-columns: minmax(0, 1fr); padding-block: 40px 60px; }
  .product-compare__description { max-width: 680px; }
  .comparison-board { --label-width: 19%; --product-width: 42%; margin: 100px 0 0; }
  .product-facts { border-radius: var(--card-radius); padding: 8px 12px; }
  .fact-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .fact + .fact { border-inline-start: 0; }
  .fact { border-bottom: 1px solid rgb(183 205 228 / 40%); }
  .fact:nth-last-child(-n + 3) { border-bottom: 0; }
  .use-case-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .use-case-card { aspect-ratio: auto; min-height: 200px; }
  .skin-barrier__layout { grid-template-columns: minmax(0, 1fr); gap: 24px; padding-block: 36px; background-position: right bottom; }
  .skin-barrier .section-heading__description { max-width: 580px; }
  .skin-barrier__questions { padding-top: 0; }
  .technology__layout { grid-template-columns: minmax(0, 1fr); }
  .technology__visual { min-height: 0; aspect-ratio: 16 / 10; max-height: 600px; overflow: hidden; }
  .technology__visual img { object-position: center 58%; }
  .technology__copy { max-width: none; padding: 40px var(--page-gutter) 48px; }
  .technology__copy .section-heading h2 { font-size: 31px; }
  .research-cards { max-width: none; }
  .research-card__body { max-width: 80%; }
}

@media (max-width: 760px) {
  .site-footer { padding-block: 32px; line-height: 1.7; }
  .site-footer__columns { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .site-footer__brand { max-width: none; padding-right: 0; }
  .site-footer__emails { column-gap: 16px; row-gap: 8px; }
  .site-footer__legal { margin-top: 24px; padding-top: 16px; line-height: 1.8; }
  .faq { padding-block: 40px 48px; }
  .faq-list { width: 100%; margin-top: 12px; }
  .faq-question { gap: 18px; }
  .faq-answer { padding-right: 0; }
  .usage-experience { padding-block: 40px 48px; }
  .usage-layout { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .usage-experience .section-heading h2 { font-size: clamp(26px, 6.8vw, 32px); line-height: 1.5; }
  .usage-feature-list { margin-top: 28px; gap: 20px; }
  .usage-feature-list p, .usage-steps p { line-height: 1.7; }
  .usage-guide { padding: 24px; }
  .usage-steps { gap: 28px; }
  .usage-notice { margin-top: 24px; }
  .usage-notice p { line-height: 1.7; }
  .product-experience { margin-top: 40px; }
  .experience-panel { padding: 24px 18px; }
  .experience-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 24px; }
  .experience-metric { padding: 0 6px; border-left: 0; }
  .experience-metric:nth-child(2n + 3) { border-left: 1px solid rgb(138 168 200 / 25%); }
  .experience-metric--featured { grid-column: 1 / -1; align-items: center; padding-bottom: 20px; border-bottom: 1px solid rgb(138 168 200 / 25%); }
  .experience-metric--featured dd { align-items: center; font-size: 64px; }
  .experience-metric dt { font-size: 12px; }
  .experience-footer { margin-top: 24px; gap: 14px; }
  .experience-meta { gap: 8px; }
  .experience-meta li { padding-inline: 9px; }
  .comparison-viewport { width: calc(100% + 2 * var(--page-gutter)); margin-inline: calc(-1 * var(--page-gutter)); padding: 80px var(--page-gutter) 28px; overflow: clip; }
  .comparison-board { --label-width: 104px; --product-width: clamp(280px, 48vw, 340px); width: max(660px, calc(100vw + 60px)); margin: 0 0 0 calc(20px - var(--page-gutter) - var(--label-width)); }
  .comparison-board::before { top: -40px; }
  .comparison-table__product-heading { padding: 0 24px 10px; vertical-align: bottom; font-size: 24px; line-height: 1.3; }
  .comparison-table__product-heading > span { margin-top: 0; }
  .comparison-table__product-heading img { width: 72px; height: auto; aspect-ratio: 83 / 106; right: 24px; bottom: 10px; }
  .comparison-table__other-heading { padding: 0 30px 10px; vertical-align: bottom; font-size: 18px; line-height: 22px; white-space: nowrap; }
  .comparison-table tbody th { padding-inline: 20px 6px; font-size: 12px; line-height: 20px; white-space: nowrap; }
  .comparison-table tbody td { font-size: 12px; line-height: 18px; white-space: nowrap; }
  :root { --page-gutter: 24px; --mobile-facts-overlap: 88px; }
  .site-header { position: relative; min-height: 76px; padding: 12px 24px; flex-wrap: wrap; background: #97b4d4; }
  .brand { gap: 8px; }
  .brand__symbol { width: 36px; height: 36px; }
  .brand__wordmark { width: 109px; height: 36px; }
  .site-nav { width: 100%; flex-wrap: wrap; justify-content: center; }
  .site-nav a { min-height: 44px; }
  .site-header.has-menu .site-nav { position: absolute; z-index: 2; top: 100%; inset-inline: 16px; width: auto; padding: 12px; flex-direction: column; align-items: stretch; background: #405e8f; border: 1px solid rgb(255 255 255 / 40%); border-radius: 16px; box-shadow: 0 12px 30px rgb(54 71 90 / 16%); }
  .hero { min-height: 0; padding: 32px 24px calc(var(--mobile-facts-overlap) + 16px); background: linear-gradient(180deg, #97b4d4, #d0e0f0); }
  .hero__layout { max-width: 480px; grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .hero__copy { padding: 0; text-align: center; }
  .hero__eyebrow { font-size: clamp(15px, 3.7vw, 19px); }
  .hero h1 { font-size: clamp(34px, 9.4vw, 48px); line-height: 1.35; }
  .hero__description { margin-top: 12px; }
  .metrics { width: 100%; margin: 28px auto 0; gap: 12px; }
  .metric { align-items: center; }
  .metric__value { width: 100%; font-size: clamp(26px, 7.2vw, 32px); }
  .metric--with-link { width: auto; max-width: 100%; }
  .metric dt { font-size: clamp(10px, 2.8vw, 14px); line-height: 1.5; white-space: normal; text-align: center; }
  .research-link { margin-top: 8px; }
  .hero__cta { display: none; }
  .hero__product { grid-row: 1; width: min(100%, 340px); justify-self: center; }
  .hero__product img { width: calc(100% * 2 / 3); margin-inline: auto; }
  .hero__product figcaption { margin-top: 10px; }
  .product-facts { margin-top: calc(-1 * var(--mobile-facts-overlap)); }
  .use-cases { padding-block: 40px 48px; }
  .use-case-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 28px; }
  .use-case-card { min-height: 200px; }
  .use-case-card > figcaption { padding: 16px 12px; }
  .use-case-card h3 { font-size: 17px; }
  .use-case-card p { font-size: 12px; line-height: 1.5; }
  .fact dd { font-size: 16px; }
  .fact dd.fact__value--compact { font-size: 11px; }
  .skin-barrier__questions { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .skin-barrier__layout { background-image: none; }
  .question-card { min-height: 0; padding: 20px; }
  .question-card ul { margin-top: 12px; font-size: 14px; }
  .technology__visual { aspect-ratio: 1; }
  .technology__copy .section-heading h2 { font-size: clamp(24px, 6.5vw, 31px); line-height: 1.5; }
  .research-card { padding: 24px 18px; }
  .research-card__body { max-width: none; font-size: 13px; line-height: 1.7; }
  .research-card__source a { font-size: 11px; line-height: 1.6; }
  .technology-team__content { padding-block: 32px; background-position: right bottom; background-size: 300px auto; }
  .technology-team .section-heading h3 { font-size: clamp(22px, 6.9vw, 27px); line-height: 1.6; }
  .technology-team__facts { grid-template-columns: minmax(0, 1fr); gap: 12px; }
}

@media (max-width: 359px) {
  :root { --mobile-facts-overlap: 128px; }
  .fact-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact:nth-last-child(-n + 3) { border-bottom: 1px solid rgb(183 205 228 / 40%); }
  .fact:nth-last-child(-n + 2) { border-bottom: 0; }
  .use-case-list { grid-template-columns: minmax(0, 1fr); }
  .use-case-card { min-height: 240px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}