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@media (max-width:991px){.nav-mail{display:none}.hero-grid,.board-grid,.lab-intro,.mode-panel,.field-top,.curve-layout,.handoff-layout,.check-layout,.faq-grid,.contact-layout{grid-template-columns:1fr}.hero-grid{align-items:start}.hero-photo{max-width:700px}.notice-grid{grid-template-columns:1fr 1fr}.notice-cell:nth-child(2){border-right:0}.notice-cell:nth-child(-n+2){border-bottom:2px solid var(--ink)}.board-side .section-title{max-width:13ch}.reading-intro{grid-column:span 6}.reading-photo{grid-column:span 6}.reading-cards{grid-column:1/-1;grid-template-columns:repeat(3,minmax(0,1fr))}.review-header{align-items:start;flex-direction:column}.contact-layout>.section-intro{max-width:700px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}
@media (max-width:650px){.mast-row{min-height:60px}.brand{font-size:1.05rem}.display-poster{font-size:clamp(3.9rem,16.5vw,6rem)}.display-poster .poster-accent{margin-left:6vw}.hero-grid{padding-top:48px}.hero-photo{padding-left:12px;padding-bottom:12px}.notice-grid{grid-template-columns:1fr}.notice-cell{border-right:0!important;border-bottom:2px solid var(--ink)}.notice-cell:last-child{border-bottom:0}.board-slot{grid-template-columns:54px 1fr}.slot-icon{display:none}.mode-tabs{display:grid;grid-template-columns:1fr 1fr}.mode-tabs button{font-size:.75rem;padding:12px 10px;border-bottom:1px solid var(--ink)}.mode-art img{max-height:320px}.reading-grid{grid-template-columns:1fr}.reading-intro,.reading-photo,.reading-cards{grid-column:1}.reading-photo img{aspect-ratio:1.3/1}.reading-cards{grid-template-columns:1fr}.review-grid{grid-template-columns:1fr}.handoff-photo{padding-right:12px;padding-bottom:12px}.curve-plot{height:170px}.faq-section .accordion-button{font-size:1.03rem}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.legal-hero h1{max-width:100%}.footer-bottom{display:block}.footer-bottom>*+*{margin-top:8px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

/* Responsive layout QA repairs: preserve the bulletin character without masking overflow. */
:root{--safe-gutter:clamp(2.25rem,5vw,4rem)}
html{max-width:100%}
body{min-width:0;max-width:100%}
.site-header .container,main .container,.site-footer .container{--bs-gutter-x:var(--safe-gutter)}
:where(main,section,header,footer,.container,.mast-row,.hero-grid,.board-grid,.lab-intro,.mode-panel,.reading-grid,.field-top,.curve-layout,.review-header,.review-grid,.handoff-layout,.check-layout,.faq-grid,.contact-layout,.footer-grid,.legal-wrap){min-width:0}
:where(h1,h2,h3,p,a,li,button,label,.form-message,.hero-meta,.photo-tag){overflow-wrap:break-word}
.section-title{margin-bottom:22px}
.section-copy{line-height:1.6}
.hero-deck{line-height:1.5}
.notice-strip .container.px-0{padding-left:calc(var(--safe-gutter) / 2)!important;padding-right:calc(var(--safe-gutter) / 2)!important}
.notice-grid{min-width:0}
.notice-cell,.board-slot>div,.index-card,.review-card-content,.handoff-step>div,.practice-item>span,.legal-content,.notfound-card{min-width:0}
.hero-photo,.mode-art,.reading-photo,.review-card,.handoff-photo{isolation:isolate}
.hero-photo img,.mode-art img,.reading-photo img,.review-card img,.handoff-photo img{position:relative;z-index:1}
.mode-art{position:relative}
.mode-art img{height:auto}
.mode-tabs button{min-width:0;white-space:normal;line-height:1.18}
.form-select{min-width:0}

@media (max-width:1199px){
  .notice-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .notice-cell:nth-child(odd){border-right:2px solid var(--ink)}
  .notice-cell:nth-child(even){border-right:0}
  .notice-cell:nth-child(-n+2){border-bottom:2px solid var(--ink)}
  .reading-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(18px,3vw,28px)}
  .reading-intro,.reading-photo{grid-column:span 1}
  .reading-cards{grid-column:1/-1;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(12px,2vw,18px)}
}
@media (max-width:1099px){
  .hero-grid{grid-template-columns:1fr;align-items:start}
  .hero-copy{max-width:780px}
  .hero-photo{max-width:780px;width:100%;margin-left:auto}
  .board-grid,.handoff-layout,.check-layout,.faq-grid,.contact-layout{grid-template-columns:1fr;gap:clamp(30px,5vw,54px)}
  .board-side,.handoff-layout>div:first-child,.check-layout>div:first-child,.faq-grid>div:first-child,.contact-layout>.section-intro{max-width:780px}
}
@media (max-width:900px){
  .lab-intro,.field-top{grid-template-columns:1fr;gap:18px}
  .lab-intro .section-copy,.field-top .section-copy{max-width:68ch}
  .review-header{align-items:stretch}
  .review-header>div:last-child{width:min(100%,420px)}
}
@media (max-width:820px){
  .reading-grid{grid-template-columns:1fr}
  .reading-intro,.reading-photo,.reading-cards{grid-column:1}
  .reading-photo{max-width:680px}
  .reading-cards,.review-grid{grid-template-columns:1fr}
  .index-card{padding:clamp(18px,4vw,24px)}
  .review-card-content{padding:clamp(18px,4vw,24px)}
  .review-card img{aspect-ratio:1.55/1}
}
@media (max-width:650px){
  .site-header .container,main .container,.site-footer .container{--bs-gutter-x:2.25rem}
  .hero-grid{gap:34px}
  .hero-deck{margin:26px 0}
  .hero-meta{gap:8px 14px}
  .notice-cell{padding:20px 0}
  .notice-cell:nth-child(odd){border-right:0}
  .notice-cell:nth-child(-n+2){border-bottom:2px solid var(--ink)}
  .section-title{margin-bottom:18px}
  .mode-panel{gap:26px}
  .mode-art{padding:12px}
  .curve-card{padding:18px}
  .curve-captions{font-size:.68rem;gap:8px}
  .review-header{gap:20px}
  .handoff-photo::after{width:78%;height:62%}
  .faq-grid,.contact-layout,.handoff-layout,.check-layout,.board-grid{gap:32px}
}
@media (max-width:430px){
  .site-header .container,main .container,.site-footer .container{--bs-gutter-x:2rem}
  .brand{font-size:1rem;gap:8px}
  .brand-mark{width:25px;height:25px;box-shadow:5px 5px 0 var(--apricot)}
  .display-poster{font-size:clamp(3.45rem,17vw,4.25rem);line-height:.78}
  .display-poster .poster-accent{margin-left:4vw}
  .mode-tabs{grid-template-columns:1fr}
  .mode-tabs button{border-right:0}
  .mode-tabs button:last-child{border-bottom:0}
  .hero-photo{padding-left:10px;padding-bottom:10px}
  .photo-tag{max-width:136px;font-size:.68rem}
  .curve-plot{height:145px;margin-left:5px;margin-right:5px}
  .progress-row{align-items:flex-start;flex-direction:column;gap:2px}
  .send-button{width:100%}
}

/* Final responsive QA correction: preserve a readable heading-to-copy gap in board and handoff lists. */
.board-slot h3{margin-bottom:12px}.handoff-step h3{margin-bottom:12px}