@media (max-width: 1100px) {
  .header-cta { display: none; }
  .site-nav > a, .nav-group > summary { padding-inline: 10px; font-size: .86rem; }
  .nav-group > summary { padding-right: 26px; }
  .nav-group > summary::after { right: 10px; }
  .nav-contact { padding-inline: 13px !important; }
  .process { grid-template-columns: repeat(4, minmax(0,1fr)); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-grid > :last-child { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { --section: 78px; }
  .header-inner { min-height: 82px; flex-wrap: wrap; gap: 0; }
  .brand { min-width: 0; flex: 1; }
  .brand img { width: 44px; height: 44px; }
  .menu-toggle { display: block; }
  .js .site-nav { display: none; }
  .site-nav { width: 100%; padding: 12px 0 18px; flex-basis: 100%; align-items: stretch; flex-direction: column; }
  .site-nav.is-open { display: flex; }
  .site-nav > a, .nav-group > summary { display: flex; min-height: 48px; align-items: center; }
  .site-nav > a::after, .nav-group > summary::before { right: auto; bottom: 4px; left: 10px; }
  .nav-dropdown { position: static; min-width: 0; margin: 0 8px 8px; border-color: #dce4e7; box-shadow: none; transform: none; }
  .nav-dropdown::before { display: none; }
  .nav-service-mega { width: auto; padding: 18px 8px 20px; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 0; }
  .nav-service-column { padding-inline: 12px; }
  .nav-service-column:nth-child(odd) { border-left: 0; }
  .nav-location-dropdown { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nav-contact { margin: 6px 0 0; justify-content: center; }
  .home-page .header-inner { min-height: 82px; }
  .home-page .menu-toggle { background: rgba(7,29,43,.32); border-color: rgba(255,255,255,.38); backdrop-filter: blur(10px); }
  .home-page .menu-toggle span, .home-page .menu-toggle::before, .home-page .menu-toggle::after { background: #fff; }
  .home-page .site-nav { margin-bottom: 12px; padding: 12px; background: rgba(7,29,43,.9); border: 1px solid rgba(255,255,255,.18); border-radius: 14px; box-shadow: 0 18px 44px rgba(7,29,43,.28); backdrop-filter: blur(16px); }
  .home-page .nav-dropdown { background: rgba(255,255,255,.98); }
  .home-page .nav-dropdown a { color: var(--ink); text-shadow: none; }
  .home-hero { background-position: 60% center; }
  .home-hero-inner { padding-block: 108px 72px; }
  .home-hero-copy { transform: translateY(3vh); }
  .home-section-intro, .home-contact-inner { grid-template-columns: 1fr; }
  .home-section-intro { gap: 16px; }
  .home-section-intro .home-section-kicker { grid-column: auto; }
  .service-directory-item { grid-template-columns: 48px minmax(220px, .85fr) minmax(260px, 1.15fr); }
  .service-directory-item > a { grid-column: 2; width: max-content; }
  .history-shell { padding-inline: 50px; }
  .history-item { flex-basis: calc((100% - 24px) / 2); }
  .home-history-footer { padding-inline: 50px; }
  .home-guide-layout { grid-template-columns: 1fr; }
  .home-guide-card-featured { min-height: 470px; }
  .home-guide-stack { grid-template-rows: none; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .home-guide-stack .home-guide-card { min-height: 280px; }
  .home-guide-stack .home-guide-card-shade { background: linear-gradient(0deg, rgba(5,24,34,.9) 0%, rgba(5,24,34,.52) 60%, rgba(5,24,34,.07) 100%); }
  .home-guide-stack .home-guide-card-content { padding: 24px 20px; }
  .home-guide-stack .home-guide-card-action { display: none; }
  .guide-intro .container, .guide-feature-grid { grid-template-columns: 1fr; }
  .guide-category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-category:nth-child(3) { border-left: 0; }
  .guide-category:nth-child(n + 3) { border-top: 1px solid #cfd6d8; }
  .guide-feature-primary { min-height: 420px; }
  .guide-tools { grid-template-columns: 1fr; }
  .guide-filters { justify-content: flex-start; }
  .name-check-hero-grid, .name-check-layout { grid-template-columns: 1fr; }
  .name-check-hero-grid { min-height: 0; }
  .name-check-hero-guide { max-width: 620px; }
  .name-check-result { position: static; }
  .name-check-note-grid { grid-template-columns: 1fr; }
  .name-check-note-grid article { min-height: 0; border-top: 1px solid #cbd4d6; border-left: 0; }
  .name-check-note-grid article:first-child { border-top: 0; }
  .home-contact-inner { gap: 30px; }
  .branch-support-layout { grid-template-columns: 1fr; }
  .grid-4, .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .section-heading, .split-feature, .detail-intro, .contact-layout { grid-template-columns: 1fr; gap: 34px; }
  .detail-intro .sticky-title { position: static; }
  .content-layout { grid-template-columns: 1fr; }
  .toc { position: static; order: -1; }
  .article-toc-desktop { display: none; }
  .article-toc-mobile { display: block; }
  .stats { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .consult-band-inner { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .footer-grid > :last-child { grid-column: auto; }
}

@media (max-width: 640px) {
  body { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
  .container, .narrow { width: min(calc(100% - 28px), var(--container)); }
  h1 { font-size: clamp(2.25rem, 12vw, 3.3rem); }
  h2 { font-size: clamp(1.72rem, 8vw, 2.35rem); }
  .brand small { display: none; }
  .section-heading { margin-bottom: 34px; }
  .home-hero { background-position: 63% center; }
  .home-hero-inner { padding-block: 100px 72px; }
  .home-hero-copy { transform: none; }
  .home-hero h1 { margin-bottom: 24px; flex-wrap: wrap; gap: 2px 10px; font-size: clamp(2.7rem, 12vw, 3.25rem); }
  .hero-title-primary { flex-basis: 100%; }
  .hero-title-separator { font-size: .44em; }
  .home-hero .lead { display: grid; padding-inline: 8px; gap: 1px; font-size: clamp(.96rem, 4vw, 1.14rem); letter-spacing: .04em; line-height: 1.75; }
  .home-section-intro { margin-bottom: 38px; }
  .service-directory-item { min-height: 0; padding-block: 26px; grid-template-columns: 36px 1fr; gap: 12px 14px; }
  .service-directory-index { grid-row: 1 / 4; }
  .service-directory-item ul, .service-directory-item > a { grid-column: 2; }
  .service-directory-item > a { margin-top: 8px; }
  .service-offering-item { grid-template-columns: 34px 1fr; gap: 10px 12px; }
  .service-offering-item > span { grid-row: 1 / 3; }
  .service-offering-item > a { grid-column: 2; width: max-content; }
  .branch-city-bar > .container { grid-template-columns: 1fr; gap: 14px; }
  .branch-city-switch { justify-content: flex-start; }
  .branch-contact-card { padding: 24px; }
  .branch-contact-card dl > div { grid-template-columns: 1fr; gap: 4px; }
  .branch-contact-actions { align-items: stretch; flex-direction: column; gap: 18px; }
  .branch-contact-actions .btn { width: 100%; }
  .branch-client-proof { padding: 14px 0 0; border-top: 1px solid #d8e0e3; border-left: 0; }
  .branch-process { grid-template-columns: 1fr; }
  .history-shell { padding-inline: 0; }
  .home-history-heading { padding-inline: 10px; }
  .home-history-heading h2 { font-size: clamp(2.15rem, 10vw, 3rem); }
  .home-history-viewport { padding-inline: 28px; scroll-padding-inline: 28px; }
  .history-item { flex-basis: calc(100% - 46px); }
  .history-item time { text-align: left; }
  .history-item::before { left: 16px; transform: none; }
  .history-item::after { left: 0; right: -12px; }
  .history-item:first-child::after { left: 16px; }
  .history-item:last-child::after { right: calc(100% - 25px); }
  .history-card { min-height: 220px; }
  .history-control { top: 57%; width: 38px; height: 38px; }
  .history-control-prev { left: -4px; }
  .history-control-next { right: -4px; }
  .home-history-footer { display: grid; margin-top: 24px; padding: 20px 10px 0; gap: 18px; }
  .home-history-footer .home-inline-link { width: max-content; }
  .home-guide-heading { display: grid; margin-bottom: 38px; gap: 20px; }
  .home-guide-heading > a { width: max-content; }
  .home-guide-layout, .home-guide-stack { gap: 14px; }
  .home-guide-card-featured { min-height: 430px; }
  .home-guide-stack { grid-template-columns: 1fr; }
  .home-guide-stack .home-guide-card { min-height: 230px; }
  .home-guide-card-featured .home-guide-card-content { padding: 30px 24px; }
  .home-guide-card-featured h3 { font-size: clamp(1.85rem, 8vw, 2.45rem); }
  .guide-intro .container { gap: 24px; }
  .guide-intro h1 { font-size: clamp(2.05rem, 10vw, 3rem); }
  .guide-category-grid { grid-template-columns: 1fr; }
  .guide-category { min-height: 0; padding-inline: 4px; border-top: 1px solid #cfd6d8; border-left: 0; }
  .guide-category:first-child { border-top: 0; }
  .guide-category > span { margin-bottom: 22px; }
  .guide-section-heading { display: grid; gap: 12px; }
  .guide-feature-primary { min-height: 390px; padding: 30px 24px; }
  .guide-feature-secondary { padding-inline: 20px; }
  .guide-tools { padding-block: 18px; }
  .guide-filters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-filters button:first-child { grid-column: 1 / -1; }
  .guide-list-item { grid-template-columns: 1fr; gap: 14px; }
  .guide-list-item > div { display: flex; justify-content: space-between; gap: 16px; }
  .name-check-hero-grid { gap: 34px; }
  .name-check-intro h1 { font-size: clamp(2.35rem, 11.5vw, 3.45rem); }
  .name-check-assurance { display: grid; gap: 7px; }
  .name-check-hero-guide { padding: 25px 22px; }
  .name-check-section-heading { grid-template-columns: 1fr; gap: 14px; }
  .name-check-form-panel { padding: 24px 20px; }
  .name-check-fields { grid-template-columns: 1fr; }
  .name-check-submit { display: grid; gap: 10px; }
  .name-check-submit .btn { width: 100%; }
  .name-check-result { padding: 24px 20px; }
  .name-check-dialog { width: 100%; max-width: none; max-height: 100dvh; margin: auto 0 0; }
  .name-check-dialog-shell { padding: 34px 20px 24px; }
  .name-check-dialog-close { top: 9px; right: 9px; }
  .name-check-notes > .container > header, .name-check-official { grid-template-columns: 1fr; gap: 14px; }
  .name-check-official > div { grid-column: auto; flex-direction: column; align-items: flex-start; }
  .name-check-note-grid span { margin-bottom: 28px; }
  .home-contact-inner { min-height: 0; }
  .home-contact-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .grid-2, .grid-3, .grid-4, .service-matrix { grid-template-columns: 1fr; }
  .card { padding: 23px; }
  .service-card .text-link { left: 23px; }
  .process { grid-template-columns: 1fr; }
  .process li { display: grid; min-height: 0; grid-template-columns: 46px 1fr; column-gap: 10px; }
  .process li::before { grid-row: 1 / 3; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat { padding: 23px 18px; }
  .feature-panel { min-height: 390px; padding: 30px; }
  .feature-panel .big-number { margin-top: 48px; }
  .page-hero { padding-block: 62px; }
  .page-hero h1 { font-size: clamp(2.2rem, 11vw, 3.2rem); }
  .detail-section { padding-block: 58px; }
  .materials { grid-template-columns: 1fr; }
  .risk-panel, .form-card { padding: 24px; }
  .form-grid { grid-template-columns: 1fr; }
  .field-full { grid-column: auto; }
  .consult-band-inner { padding-block: 44px; }
  .consult-band .cluster { display: grid; grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { padding-right: 0; flex-direction: column; align-items: flex-start; }
  .mobile-actions { position: fixed; z-index: 55; right: 0; bottom: 0; left: 0; display: grid; min-height: 66px; padding: 8px max(10px, env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left)); grid-template-columns: 1fr 1fr; gap: 8px; background: rgba(255,255,255,.97); border-top: 1px solid var(--line); box-shadow: 0 -8px 24px rgba(7,29,43,.1); }
  .mobile-actions .btn { min-height: 50px; padding: 8px 10px; font-size: .88rem; }
  .back-top { right: 16px; bottom: calc(84px + env(safe-area-inset-bottom)); }
  .dialog-body { padding: 22px; }
  .dialog-placeholder { width: 150px; height: 150px; }
}

@media (max-width: 380px) {
  .container, .narrow { width: min(calc(100% - 24px), var(--container)); }
  .brand strong { font-size: 1.06rem; }
  .consult-band .cluster { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .stat { text-align: center; }
}