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cite{color:var(--color-muted);font-size:.82rem;font-style:normal;font-weight:600}.nra-disclosure{background:var(--color-surface-subtle);border:1px solid var(--color-border);border-radius:var(--radius-md);flex-direction:column;gap:1rem;margin-top:3rem;padding:1.75rem;display:flex}.nra-disclosure strong{color:var(--color-ink);font-size:.9rem;font-weight:700}.nra-disclosure p{color:var(--color-muted);margin:0;font-size:.86rem;line-height:1.6}.nra-related{border-top:1px solid var(--color-border);background:#fff}.nra-related__head{margin-bottom:2rem}.nra-related__head h2{color:var(--color-ink);margin:.5rem 0 0;font-size:clamp(1.8rem,2.8vw,2.2rem);font-weight:600}.nra-related__grid{grid-template-columns:repeat(2,1fr);gap:2rem;display:grid}.nra-related-card{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-paper);color:inherit;transition:transform var(--motion-fast) ease, box-shadow var(--motion-fast) ease, border-color var(--motion-fast) 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h3{color:var(--color-ink);margin:.35rem 0 .5rem;font-size:1.1rem;font-weight:600;line-height:1.3}.nra-related-card__content p{color:var(--color-muted);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0 0 .85rem;font-size:.84rem;line-height:1.5;display:-webkit-box;overflow:hidden}.nra-read-link{color:var(--color-brand-accent);align-items:center;gap:.35rem;margin-top:auto;font-size:.82rem;font-weight:600;display:inline-flex}.nra-read-link svg{transition:transform var(--motion-fast) ease}.nra-related-card:hover .nra-read-link svg{transform:translate(3px)}@media (width<=64rem){.nr-cover-card,.nr-grid,.nr-media-kit__box,.nra-layout__shell,.nra-related__grid{grid-template-columns:1fr}.nra-sidebar{position:static}.nr-media-kit__box{gap:2.5rem}.nr-press-contact-info{grid-template-columns:1fr}.nr-marquee__grid{grid-template-columns:repeat(2,1fr)}}@media (width<=48rem){.nr-marquee__grid{grid-template-columns:1fr}.nra-header-actions{width:100%;margin-top:1rem;margin-left:0}.nra-related-card{flex-direction:column}.nra-related-card__media{width:100%;height:12rem}.nr-cover-card__media,.nr-cover-card__media img{min-height:18rem}}


/* ============================================================
   Language switcher - refined to match the site's own surface
   language: same font stack, same pill radius/tracking as .nav-cta,
   frosted semi-transparent panel, and a calm 2-option list.
   ============================================================ */
.lang-switcher{position:relative;display:inline-flex;align-items:center;margin-left:.25rem}
.lang-toggle-btn{
  display:inline-flex;align-items:center;gap:.42rem;
  padding:.44rem .85rem;border-radius:var(--radius-pill);
  border:1px solid currentColor;background:transparent;color:inherit;
  font-family:var(--font-body);font-size:.85rem;font-weight:500;
  letter-spacing:.02em;line-height:1;cursor:pointer;
  transition:border-color var(--motion-fast) ease,background var(--motion-fast) ease,opacity var(--motion-fast) ease
}
.site-header:not(.is-scrolled):not(.menu-open) .lang-toggle-btn{color:#fff;border-color:rgba(255,255,255,.4)}
.site-header:not(.is-scrolled):not(.menu-open) .lang-toggle-btn:hover{border-color:#fff;background:rgba(255,255,255,.14)}
.site-header.is-scrolled .lang-toggle-btn,.site-header.menu-open .lang-toggle-btn,
.inner-header .lang-toggle-btn{color:var(--color-ink);border-color:var(--color-border)}
.site-header.is-scrolled .lang-toggle-btn:hover,.site-header.menu-open .lang-toggle-btn:hover,
.inner-header .lang-toggle-btn:hover{border-color:var(--color-ink);background:rgba(0,0,0,.045)}
.lang-globe-icon{width:15px;height:15px;flex-shrink:0}
.lang-chevron-icon{width:8px;height:5px;opacity:.7;transition:transform var(--motion-fast) ease}
.lang-switcher.is-open .lang-chevron-icon{transform:rotate(180deg)}

.lang-dropdown{
  position:absolute;top:calc(100% + .4rem);right:0;min-width:8.6rem;
  padding:.3rem;
  border-radius:10px;
  border:1px solid rgba(15,23,28,.08);
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(28px) saturate(180%);
  backdrop-filter:blur(28px) saturate(180%);
  box-shadow:0 14px 36px -10px rgba(11,19,24,.18);
  opacity:0;visibility:hidden;transform:translateY(-4px);
  transition:opacity var(--motion-fast) ease,transform var(--motion-fast) cubic-bezier(.16,1,.3,1),visibility var(--motion-fast);
  z-index:150
}
.lang-switcher.is-open .lang-dropdown,.lang-switcher:hover .lang-dropdown{opacity:1;visibility:visible;transform:translateY(0)}

.lang-option{
  position:relative;display:flex;align-items:center;
  padding:.46rem .7rem .46rem 1.55rem;
  border-radius:7px;
  font-family:var(--font-body);font-size:.82rem;font-weight:500;
  line-height:1.25;letter-spacing:0;color:var(--color-ink)!important;
  text-decoration:none;
  transition:background var(--motion-fast) ease,color var(--motion-fast) ease
}
.lang-option:hover{background:rgba(15,23,28,.05)}
.lang-option.is-active{font-weight:600;color:var(--color-ink)!important;background:rgba(15,23,28,.055)}
.lang-option.is-active::after{
  content:"";position:absolute;left:.6rem;top:50%;
  width:.42rem;height:.26rem;transform:translateY(-70%) rotate(-45deg);
  border-left:1.6px solid var(--color-brand-accent);border-bottom:1.6px solid var(--color-brand-accent)
}
.lang-option__name{display:block;white-space:nowrap}
.lang-option__region{display:none}

.mobile-lang-bar{display:none}
@media (max-width:64rem){
  .lang-switcher{display:none}
  .mobile-lang-bar{display:flex;gap:.5rem;padding:1.25rem;margin-top:1rem;border-top:1px solid rgba(0,0,0,.08);width:100%}
  .mobile-lang-btn{flex:1;text-align:center;padding:.65rem .85rem;border-radius:var(--radius-pill);
    border:1px solid var(--color-border);font-family:var(--font-body);font-size:.9rem;
    text-decoration:none;color:var(--color-ink);background:transparent;transition:all var(--motion-fast) ease}
  .mobile-lang-btn.is-active{background:var(--color-ink);color:#fff!important;border-color:var(--color-ink);font-weight:600}
}
.site-footer__lang{display:inline-flex;align-items:center;gap:.6rem;font-size:.8rem;color:rgba(255,255,255,.6)}
.footer-lang-link{color:inherit;text-decoration:none;transition:color var(--motion-fast) ease}
.footer-lang-link:hover{color:#fff}
.footer-lang-link.is-active{color:#fff;font-weight:600}
.footer-lang-divider{opacity:.4}
:lang(zh-CN) .lang-option{font-size:.86rem;letter-spacing:.01em}

/* Layout & Typography Coordination Overrides for Compare & Press Headers */
.collection-hero--compact{min-height:auto!important;padding:clamp(3rem,5vw,4.5rem) max(1.5rem,50% - 41rem)!important}
.collection-hero--compact>div{max-width:52rem!important}
.collection-hero--compact .kicker{font-size:0.82rem!important;letter-spacing:0.08em!important;margin-bottom:0.5rem!important;display:inline-block}
.collection-hero--compact h1{max-width:36ch!important;font-size:clamp(2.2rem,4vw,3.2rem)!important;line-height:1.15!important;margin:0 0 1rem!important;font-weight:600!important;letter-spacing:-0.03em!important}
.collection-hero--compact p:not(.kicker){max-width:40rem!important;font-size:clamp(1rem,1.15vw,1.12rem)!important;line-height:1.6!important;color:var(--color-muted)!important}

.nr-masthead{padding:clamp(3rem,5vw,4.5rem) 0 clamp(2rem,3.5vw,3rem)!important}
.nr-masthead__meta{margin-bottom:1.5rem!important;padding-bottom:1.25rem!important}
.nr-masthead__main h1{max-width:32ch!important;font-size:clamp(2.2rem,4vw,3.2rem)!important;line-height:1.18!important;letter-spacing:-0.03em!important;margin:0 0 0.85rem!important;font-weight:700!important}
.nr-masthead__main p{max-width:44rem!important;font-size:clamp(1rem,1.15vw,1.12rem)!important;line-height:1.65!important;color:var(--color-muted)!important}

:lang(zh-CN) .collection-hero--compact h1{letter-spacing:0.01em!important;line-height:1.25!important}
:lang(zh-CN) .nr-masthead__main h1{letter-spacing:0.01em!important;line-height:1.25!important}

/* Chinese comparison-table compactness fixes */
.comparison-table th,.comparison-table td{word-break:break-word;overflow-wrap:anywhere}
:lang(zh-CN) .comparison-table thead th{font-size:.95rem;letter-spacing:0}
:lang(zh-CN) .comparison-table th:first-child{letter-spacing:.03em;font-size:.75rem}
:lang(zh-CN) .comparison-table td{line-height:1.5}

/* Chinese constrained-component layout safeguards */
:lang(zh-CN) .s2k-metric-item__num{font-size:clamp(1.6rem,2.6vw,2.2rem)}
:lang(zh-CN) .s2k-pillar-card__floating-tag{font-size:.62rem;letter-spacing:.05em;white-space:nowrap}
:lang(zh-CN) .s2k-spec-pill strong{font-size:.95rem}
:lang(zh-CN) .s2k-spec-pill span{font-size:.6rem}
:lang(zh-CN) .model-selector__copy strong{font-size:clamp(1.5rem,2vw,2rem)}
:lang(zh-CN) .dropdown-product-card__info strong{font-size:.88rem}
:lang(zh-CN) .product-card__spec-value{font-size:.8rem}
:lang(zh-CN) .s2k-badge{letter-spacing:.03em}
:lang(zh-CN) .sp-device-card__tag{white-space:nowrap}

/* Chinese layout anti-overflow final guard */
:lang(zh-CN) .s2k-spec-pill{max-width:9.5rem}
:lang(zh-CN) .s2k-pillar-card__floating-tag{max-width:11rem;overflow:hidden;text-overflow:ellipsis}
:lang(zh-CN) .s2k-badge{max-width:100%;overflow-wrap:anywhere}
:lang(zh-CN) .s2k-metric-item__desc{overflow-wrap:anywhere}
:lang(zh-CN) .s2k-metric-item__title{overflow-wrap:anywhere}
:lang(zh-CN) .product-card__spec-value{overflow-wrap:anywhere}
:lang(zh-CN) .sp-device-card__tag,:lang(zh-CN) .sp-device-card__sub{overflow-wrap:anywhere}
:lang(zh-CN) .dropdown-product-card__info strong,:lang(zh-CN) .dropdown-product-card__info span{overflow-wrap:anywhere}
:lang(zh-CN) .model-selector__copy strong{overflow-wrap:anywhere}

/* ============================================================
   Typography polish: CJK letter-spacing / line-height harmonization
   English keeps its tight editorial tracking (unchanged).
   ============================================================ */
:lang(zh-CN) body{line-height:1.75}

/* negative/ultra-tight tracking is designed for Latin; neutralize for CJK */
:lang(zh-CN) .home-hero h1,
:lang(zh-CN) .section-intro h2,:lang(zh-CN) .feature-story h2,:lang(zh-CN) .refill-section h2,:lang(zh-CN) .support-copy h2,
:lang(zh-CN) .technology-panel h2,
:lang(zh-CN) .product-section__intro h2,
:lang(zh-CN) .product-card__header h3,
:lang(zh-CN) .quote-section blockquote,
:lang(zh-CN) .collection-hero h1,:lang(zh-CN) .finder-section h1,
:lang(zh-CN) .model-selector__copy strong,
:lang(zh-CN) .catalog-card__copy h2,
:lang(zh-CN) .catalog-card__features h3,
:lang(zh-CN) .choice-banner h2,:lang(zh-CN) .product-next h2,
:lang(zh-CN) .product-hero h1,
:lang(zh-CN) .product-story__features h3,
:lang(zh-CN) .difference-grid h3,
:lang(zh-CN) .refill-card h2,
:lang(zh-CN) .nr-masthead__main h1,
:lang(zh-CN) .nra-title,
:lang(zh-CN) .s2k-hero__title,
:lang(zh-CN) .s2k-section-header h2,
:lang(zh-CN) .s2k-pillar-card__info h3,
:lang(zh-CN) .s2k-metric-item__num,
:lang(zh-CN) .conclusion-card h2{
  letter-spacing:0.01em;
}

/* CJK needs a little more leading inside long-form copy */
:lang(zh-CN) p,:lang(zh-CN) li,:lang(zh-CN) dd,:lang(zh-CN) blockquote{line-height:1.85}
:lang(zh-CN) .s2k-pillar-card__desc,:lang(zh-CN) .catalog-card__tagline,:lang(zh-CN) .product-card__desc{line-height:1.8}

/* uppercase transforms add visual noise to CJK; keep them for Latin only */
:lang(zh-CN) .s2k-metric-item__title{text-transform:none}
:lang(zh-CN) .s2k-metric-item__desc{text-transform:none}
:lang(zh-CN) .compare-cards p{letter-spacing:0.02em;text-transform:none;font-weight:600}
:lang(zh-CN) .compare-cards a{letter-spacing:0.02em}
:lang(zh-CN) .kicker,:lang(zh-CN) .eyebrow{letter-spacing:0.08em}
:lang(zh-CN) .product-card__spec-label{letter-spacing:0.04em;text-transform:none}
:lang(zh-CN) .site-footer__heading{letter-spacing:0.04em;text-transform:none}
:lang(zh-CN) .model-selector__copy small{letter-spacing:0.02em;text-transform:none}
:lang(zh-CN) .catalog-card__facts dt{letter-spacing:0.02em;text-transform:none}
:lang(zh-CN) .comparison-table th:first-child{letter-spacing:0.02em;text-transform:none}

/* mixed CJK/Latin hugging: a hair of space around embedded latin tokens */
:lang(zh-CN) h1,:lang(zh-CN) h2,:lang(zh-CN) h3{word-break:normal;overflow-wrap:break-word}
:lang(zh-CN) .s2k-metric-item__title,:lang(zh-CN) .s2k-metric-item__desc{word-break:normal}

/* ============================================================
   Typography polish (both languages): heading balance,
   paragraph measure and orphan control. Presentation only —
   no markup, no layout structure, no content changes.
   ============================================================ */
h1,h2,h3,h4{text-wrap:balance}
p,li,dd,blockquote{text-wrap:pretty}

/* comfortable reading measure for long-form copy */
.section-intro p,
.feature-story__copy p,
.refill-section__copy p,
.support-copy p,
.s2k-pillar-card__desc,
.catalog-card__tagline,
.about-principles__grid p,
.contact-category-grid p,
.nra-article-body p,
.support-answer,
.support-article__body p,
.sp-article-row__preview,
.article-content p{max-width:62ch}

/* tighten the ragged edge on dense spec/detail paragraphs */
.s2k-specs-table dd,.tech-spec-list dd,.comparison-table td{text-wrap:pretty}

/* keep figure captions from stranding a single word */
figcaption{text-wrap:balance}

/* better vertical rhythm inside stacked copy blocks */
.s2k-pillar-card__desc,.catalog-card__tagline,.product-card__desc{line-height:1.72}
.s2k-metric-item__desc{line-height:1.6}
.nr-masthead__main p,.collection-hero>div>p:not(.kicker){line-height:1.72}

/* ============================================================
   Global heading scale correction (both languages).
   Several hero/section clamps were tuned to reach 4.2-8.5rem,
   which is oversized for real copy in either language and causes
   headings to wrap to 3+ lines and push out of their containers.
   These overrides cap them at a balanced editorial scale.
   Presentation only: no markup or content changes.
   ============================================================ */

/* --- hero / page titles --- */
.home-hero h1{font-size:clamp(2.4rem,4.4vw,3.6rem)!important;line-height:1.24!important}
.product-hero h1{font-size:clamp(2.2rem,4vw,3.4rem)!important;line-height:1.24!important}
.tech-product-hero h1,.refill-detail-hero h1{font-size:clamp(2rem,3.4vw,2.9rem)!important;line-height:1.26!important}
.collection-hero h1,.finder-section h1{font-size:clamp(1.95rem,3.2vw,2.75rem)!important;line-height:1.26!important}
.support-home-hero h1,.about-hero h1,.contact-hero h1{font-size:clamp(1.9rem,3.1vw,2.7rem)!important;line-height:1.26!important}
.support-article__hero h1{font-size:clamp(1.75rem,2.8vw,2.4rem)!important;line-height:1.3!important}
.nr-masthead__main h1,.collection-hero--compact h1{font-size:clamp(1.75rem,2.8vw,2.4rem)!important;line-height:1.28!important;max-width:none!important}
.nra-title{font-size:clamp(1.7rem,2.7vw,2.3rem)!important;line-height:1.3!important;margin-bottom:1.25rem!important}
.s2k-hero__title{font-size:clamp(2rem,3.2vw,2.75rem)!important;line-height:1.24!important}
.document-shell h1{font-size:clamp(2rem,4.6vw,3.4rem)!important;line-height:1.24!important}
.sp-hero h1{font-size:clamp(1.8rem,3vw,2.5rem)!important;line-height:1.28!important}

/* --- section headings --- */
.section-intro h2,.feature-story h2,.refill-section h2,.support-copy h2,.product-section__intro h2{font-size:clamp(1.6rem,2.7vw,2.35rem)!important;line-height:1.3!important}
.technology-panel h2{font-size:clamp(1.7rem,2.9vw,2.5rem)!important;line-height:1.3!important}
.t1-story-panel__copy h2,.t1-capacity-story__copy h2,.model-feature-split__copy h2,
.t3-slim-story__copy h2,.model-spec-visual__copy h2{font-size:clamp(1.7rem,2.9vw,2.5rem)!important;line-height:1.3!important}
.product-film h2,.product-facts h2{font-size:clamp(1.65rem,2.7vw,2.3rem)!important;line-height:1.3!important}
.catalog-card__copy h2,.choice-banner h2,.product-next h2,.tech-product-next h2,
.refill-compatibility-panel h2,.tech-product-overview__heading h2,
.refill-detail-content__heading h2,.tech-product-film h2,.tech-product-facts__heading h2{font-size:clamp(1.55rem,2.5vw,2.15rem)!important;line-height:1.32!important}
.about-technology h2,.about-history h2,.contact-record h2,.contact-form-placeholder h2{font-size:clamp(1.5rem,2.4vw,2.1rem)!important;line-height:1.32!important}
.contact-record aside h3{font-size:clamp(1.4rem,2.2vw,1.9rem)!important;line-height:1.36!important}
.contact-prepare h2{font-size:clamp(1.45rem,2.3vw,2rem)!important;line-height:1.34!important}
.article-facts h2,.procedure-block h2,.safety-box h2{font-size:clamp(1.35rem,2.1vw,1.85rem)!important;line-height:1.36!important}
.s2k-lifestyle__overlay h2,.s2k-section-header h2{font-size:clamp(1.5rem,2.5vw,2.1rem)!important;line-height:1.32!important}
.s2k-bottom-gateway h2{font-size:clamp(1.5rem,2.6vw,2.15rem)!important;line-height:1.32!important}
.s2k-cartridge-card__content h2{font-size:clamp(1.35rem,2.1vw,1.8rem)!important;line-height:1.34!important}
.refill-card h2{font-size:clamp(1.4rem,2.3vw,1.9rem)!important;line-height:1.34!important}
.compatibility-grid h2,.finder-result h2{font-size:clamp(1.4rem,2.3vw,1.9rem)!important;line-height:1.34!important}
.support-escalation h2,.sp-section-head h2,.sp-faq__header h2,.sp-contact-card__main h2{font-size:clamp(1.35rem,2.1vw,1.8rem)!important;line-height:1.36!important}
.nr-cover-card__body h2,.nr-media-kit__copy h2,.nra-related__head h2{font-size:clamp(1.3rem,2vw,1.7rem)!important;line-height:1.38!important}
.compare-cards h2{font-size:1.35rem!important;line-height:1.34!important}

/* --- card / feature headings --- */
.product-card__header h3{font-size:clamp(1.2rem,1.6vw,1.5rem)!important;line-height:1.36!important}
.s2k-pillar-card__info h3{font-size:clamp(1.15rem,1.6vw,1.45rem)!important;line-height:1.38!important}
.product-story__features h3{font-size:clamp(1.15rem,1.8vw,1.6rem)!important;line-height:1.38!important}
.model-feature-grid h3{font-size:clamp(1.15rem,1.9vw,1.7rem)!important;line-height:1.38!important}
.air-seal-flow__steps h3{font-size:clamp(1.1rem,1.5vw,1.35rem)!important;line-height:1.4!important}
.difference-grid h3{font-size:clamp(1.15rem,1.5vw,1.4rem)!important;line-height:1.4!important}

/* --- keep CJK from breaking mid-phrase and add the extra leading it needs --- */
:lang(zh-CN) .home-hero h1,:lang(zh-CN) .product-hero h1,:lang(zh-CN) .s2k-hero__title,
:lang(zh-CN) .collection-hero h1,:lang(zh-CN) .nr-masthead__main h1,:lang(zh-CN) .nra-title,
:lang(zh-CN) .support-home-hero h1,:lang(zh-CN) .about-hero h1,:lang(zh-CN) .contact-hero h1,
:lang(zh-CN) .support-article__hero h1{line-height:1.34!important;letter-spacing:.01em!important}
:lang(zh-CN) .section-intro h2,:lang(zh-CN) .feature-story h2,:lang(zh-CN) .refill-section h2,
:lang(zh-CN) .support-copy h2,:lang(zh-CN) .product-section__intro h2,:lang(zh-CN) .technology-panel h2,
:lang(zh-CN) .refill-card h2,:lang(zh-CN) .catalog-card__copy h2,:lang(zh-CN) .product-card__header h3,
:lang(zh-CN) .s2k-pillar-card__info h3{letter-spacing:.01em!important}
:lang(zh-CN) h1,:lang(zh-CN) h2,:lang(zh-CN) h3{word-break:normal;overflow-wrap:break-word}

/* --- never let a wide heading defeat its container --- */
.refill-card,.s2k-pillar-card__info,.product-card__body,.catalog-card__copy,
.nra-related-card__content,.sp-article-row__content{min-width:0}
.refill-card h2,.s2k-pillar-card__info h3,.catalog-card__copy h2{overflow-wrap:break-word}

/* ============================================================
   CJK mobile overflow fix.
   CJK text is intrinsically wider per character than Latin, which
   exposes grid/flex children that rely on the default
   `min-width:auto` and therefore refuse to shrink below their
   content. English never hits this because its words are shorter.
   Scoped to :lang(zh-CN) so the English site is untouched.
   ============================================================ */
:lang(zh-CN) main :where(div,section,article,aside,ul,ol,li,figure,figcaption,dl,dt,dd,form,fieldset){
  min-width:0;
}
:lang(zh-CN) main :where(h1,h2,h3,h4,p,span,strong,small,dd,dt,li,td,th,blockquote,cite){
  overflow-wrap:break-word;
}
:lang(zh-CN) main :where(.kicker,.eyebrow){overflow-wrap:break-word;word-break:normal}

@media (width<=48rem){
  :lang(zh-CN) .compare-cards{width:100%}
  :lang(zh-CN) .s2k-hero__container,:lang(zh-CN) .s2k-hero__meta,
  :lang(zh-CN) .support-grid,:lang(zh-CN) .contact-grid{min-width:0}
}

/* CJK headings must be allowed to wrap on narrow viewports */
:lang(zh-CN) :where(h1,h2,h3,h4,p,li,dd,blockquote,figcaption){word-break:normal;overflow-wrap:break-word;hyphens:none}
@media (width<=48rem){
  :lang(zh-CN) :where(h1,h2,h3){overflow-wrap:anywhere}
}

/* ============================================================
   Heading measure correction.
   Several hero/section headings were capped with a tight
   `max-width` in `ch` units (12-16ch). `ch` is the width of the
   Latin "0" glyph, so the text stacked into a very narrow column -
   cramped in English and worse in Chinese, where `ch` is narrower
   than the actual glyphs. These overrides give headings a
   comfortable measure. Sizes/line-heights stay as already set.
   ============================================================ */

.home-hero h1{max-width:24ch!important}
.technology-panel h2{max-width:22ch!important}
.section-intro h2,.feature-story h2,.refill-section h2,.support-copy h2,.product-section__intro h2{max-width:26ch!important}
.t1-story-panel__copy h2,.t1-capacity-story__copy h2,.model-feature-split__copy h2,
.t3-slim-story__copy h2,.model-spec-visual__copy h2{max-width:22ch!important}
.collection-hero h1,.finder-section h1{max-width:30ch!important}
.about-hero h1,.contact-hero h1,.support-home-hero h1{max-width:26ch!important}
.support-article__hero h1{max-width:34ch!important}
.nr-masthead__main h1{max-width:38ch!important}
.document-shell h1{max-width:26ch!important}
.tech-product-hero h1,.refill-detail-hero h1{max-width:24ch!important}
.tech-product-overview__heading h2,.refill-detail-content__heading h2,
.tech-product-film h2,.tech-product-facts__heading h2{max-width:24ch!important}
.tech-system-panel__copy>h2{max-width:26ch!important}
.choice-banner h2,.product-next h2,.tech-product-next h2,
.refill-compatibility-panel h2,.support-escalation h2,.safety-box h2{max-width:28ch!important}
.article-facts h2,.procedure-block h2{max-width:30ch!important}
.s2k-hero__summary,.s2k-hero__tagline{max-width:52ch!important}
.about-hero__copy>p:last-child,.contact-hero>div>p:last-child{max-width:44rem!important}

/* Chinese needs a measure in em/rem, not ch, because `ch` measures the
   Latin zero - far narrower than a CJK glyph. */
:lang(zh-CN) .home-hero h1{max-width:22em!important}
:lang(zh-CN) .technology-panel h2{max-width:20em!important}
:lang(zh-CN) .section-intro h2,:lang(zh-CN) .feature-story h2,:lang(zh-CN) .refill-section h2,
:lang(zh-CN) .support-copy h2,:lang(zh-CN) .product-section__intro h2{max-width:24em!important}
:lang(zh-CN) .t1-story-panel__copy h2,:lang(zh-CN) .t1-capacity-story__copy h2,
:lang(zh-CN) .model-feature-split__copy h2,:lang(zh-CN) .t3-slim-story__copy h2,
:lang(zh-CN) .model-spec-visual__copy h2{max-width:20em!important}
:lang(zh-CN) .collection-hero h1,:lang(zh-CN) .finder-section h1{max-width:26em!important}
:lang(zh-CN) .about-hero h1,:lang(zh-CN) .contact-hero h1,
:lang(zh-CN) .support-home-hero h1{max-width:22em!important}
:lang(zh-CN) .support-article__hero h1{max-width:28em!important}
:lang(zh-CN) .nr-masthead__main h1{max-width:30em!important}
:lang(zh-CN) .document-shell h1{max-width:22em!important}
:lang(zh-CN) .tech-product-hero h1,:lang(zh-CN) .refill-detail-hero h1{max-width:20em!important}
:lang(zh-CN) .tech-product-overview__heading h2,:lang(zh-CN) .refill-detail-content__heading h2,
:lang(zh-CN) .tech-product-film h2,:lang(zh-CN) .tech-product-facts__heading h2{max-width:22em!important}
:lang(zh-CN) .tech-system-panel__copy>h2{max-width:24em!important}
:lang(zh-CN) .choice-banner h2,:lang(zh-CN) .product-next h2,:lang(zh-CN) .tech-product-next h2,
:lang(zh-CN) .refill-compatibility-panel h2,:lang(zh-CN) .support-escalation h2,
:lang(zh-CN) .safety-box h2{max-width:26em!important}
:lang(zh-CN) .about-hero__copy>p:last-child,:lang(zh-CN) .contact-hero>div>p:last-child{max-width:42em!important}

/* CJK hero sub-headings: at 360px the two-line <br> pair needs one more
   step down and tighter leading so it never runs to 4 lines. */
@media (width<=30rem){
  :lang(zh-CN) .t1-story-panel__copy h2,
  :lang(zh-CN) .t1-capacity-story__copy h2,
  :lang(zh-CN) .model-feature-split__copy h2,
  :lang(zh-CN) .t3-slim-story__copy h2,
  :lang(zh-CN) .model-spec-visual__copy h2,
  :lang(zh-CN) .section-intro h2,
  :lang(zh-CN) .feature-story h2,
  :lang(zh-CN) .refill-section h2,
  :lang(zh-CN) .support-copy h2,
  :lang(zh-CN) .product-section__intro h2,
  :lang(zh-CN) .technology-panel h2{
    font-size:clamp(1.3rem,5.4vw,1.7rem)!important;
    line-height:1.42!important;
  }
}

/* The hero overlay heading sits inside a narrow card (200px at 360px viewport),
   so it must scale by container, not viewport. Give it its own step-down. */
@media (width<=64rem){
  :lang(zh-CN) .s2k-lifestyle__overlay h2,
  :lang(zh-CN) .s2k-cartridge-card__content h2,
  :lang(zh-CN) .s2k-bottom-gateway h2{
    font-size:clamp(1.15rem,4vw,1.5rem)!important;
    line-height:1.46!important;
  }
}
@media (width<=30rem){
  :lang(zh-CN) .s2k-lifestyle__overlay h2,
  :lang(zh-CN) .s2k-cartridge-card__content h2,
  :lang(zh-CN) .s2k-bottom-gateway h2{
    font-size:clamp(1.05rem,4.6vw,1.3rem)!important;
    line-height:1.5!important;
  }
}