/* =====================================================
   Qualitech — design tokens
   ===================================================== */
:root{
  --qt-ink:        #0F2547;
  --qt-blue:       #1B4FA0;
  --qt-blue-deep:  #123368;
  --qt-steel:      #46516B;
  --qt-mist:       #EEF3FA;
  --qt-mist-2:     #F7FAFD;
  --qt-line:       #DCE5F2;
  --qt-signal:     #C9762F;
  --qt-signal-soft:#F3E1CD;
  --qt-white:      #FFFFFF;

  --qt-font-display: "Space Grotesk", "Segoe UI", Helvetica, Arial, sans-serif;
  --qt-font-body:    "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --qt-font-mono:    "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --qt-shell: 1180px;
  --qt-radius: 4px;
  --qt-ease: cubic-bezier(.22,.68,.36,1);
}

/* =====================================================
   Reset & base
   ===================================================== */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--qt-font-body);
  color: var(--qt-ink);
  background: var(--qt-white);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul, ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,p{ margin:0; }
button{ font-family: inherit; }

.qt-shell{
  max-width: var(--qt-shell);
  margin: 0 auto;
  padding: 0 28px;
}

.qt-sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

.qt-skip-link{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--qt-ink); color:#fff; padding:12px 20px; border-radius:0 0 4px 0;
}
.qt-skip-link:focus{ left:0; }

:focus-visible{
  outline: 2px solid var(--qt-signal);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *, *::before, *::after{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; }
}

/* =====================================================
   Type helpers
   ===================================================== */
.qt-eyebrow{
  font-family: var(--qt-font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--qt-signal);
  margin: 0 0 14px;
}
.qt-eyebrow--center{ text-align:center; }

.qt-section-title{
  font-family: var(--qt-font-display);
  font-weight: 600;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.15;
  color: var(--qt-ink);
  max-width: 720px;
}
.qt-section-title--center{ text-align:center; max-width:none; margin-left:auto; margin-right:auto; }

.qt-section-lede{
  font-size: 17px;
  color: var(--qt-steel);
  max-width: 640px;
  margin-top: 16px;
}
.qt-section-lede--center{ text-align:center; margin-left:auto; margin-right:auto; }

.qt-section-head--split{
  display:flex; align-items:flex-end; justify-content:space-between; gap:24px; flex-wrap:wrap;
  margin-bottom: 40px;
}
.qt-section-head--split .qt-eyebrow{ margin-bottom:8px; }

/* =====================================================
   Buttons
   ===================================================== */
.qt-btn{
  display:inline-flex; align-items:center; gap:8px;
  padding: 13px 26px;
  font-size: 14.5px;
  font-weight: 600;
  border-radius: var(--qt-radius);
  transition: transform .18s var(--qt-ease), background .18s ease, color .18s ease, border-color .18s ease;
  white-space: nowrap;
}
.qt-btn--primary{ background: var(--qt-ink); color:#fff; }
.qt-btn--primary:hover{ background: var(--qt-blue); transform: translateY(-1px); }
.qt-btn--ghost{ border:1.5px solid var(--qt-line); color: var(--qt-ink); }
.qt-btn--ghost:hover{ border-color: var(--qt-ink); }
.qt-btn--lg{ padding:16px 32px; font-size:16px; }

/* =====================================================
   Header
   ===================================================== */
.qt-header{
  position: sticky; top:0; z-index:100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--qt-line);
}
.qt-header__inner{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.qt-brand{ display:flex; align-items:center; gap:10px; color: var(--qt-ink); }
.qt-brand--custom-logo{ display:flex; align-items:center; }
.qt-brand--custom-logo .custom-logo-link{ display:flex; align-items:center; }
.qt-brand--custom-logo img{
  height: 40px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
}
.qt-brand__mark{ display:flex; color: var(--qt-blue); }
.qt-brand__text{
  font-family: var(--qt-font-display); font-weight:600; font-size:21px; letter-spacing:.01em;
}
.qt-nav__list{ display:flex; gap:34px; }
.qt-nav__list a{
  font-size:14.5px; font-weight:500; color: var(--qt-steel);
  transition: color .16s ease;
}
.qt-nav__list a:hover{ color: var(--qt-ink); }

.qt-nav-toggle{
  display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:8px;
}
.qt-nav-toggle span{ width:22px; height:2px; background: var(--qt-ink); display:block; }

.qt-mobile-nav{ display:none; }

@media (max-width: 860px){
  .qt-nav{ display:none; }
  .qt-nav-toggle{ display:flex; }
  .qt-mobile-nav{
    display:none;
    flex-direction:column;
    border-top:1px solid var(--qt-line);
    background:#fff;
  }
  .qt-mobile-nav.is-open{ display:flex; }
  .qt-mobile-nav__list{ display:flex; flex-direction:column; }
  .qt-mobile-nav__list a{
    display:block; padding:16px 28px; border-bottom:1px solid var(--qt-line);
    font-size:15px; color:var(--qt-ink);
  }
}

/* =====================================================
   Hero
   ===================================================== */
.qt-hero{ padding: 76px 0 64px; background: linear-gradient(180deg, #fff 0%, var(--qt-mist-2) 100%); }
.qt-hero__inner{
  display:grid; grid-template-columns: 1.5fr .8fr; gap:56px; align-items:end;
}
.qt-hero__headline{
  font-family: var(--qt-font-display);
  font-weight:600;
  font-size: clamp(34px, 4.6vw, 56px);
  line-height: 1.08;
  letter-spacing: -.01em;
  margin: 6px 0 22px;
  max-width: 15ch;
}
.qt-hero__subhead{
  font-size: 18px; color: var(--qt-steel); max-width: 46ch; margin-bottom:30px;
}
.qt-hero__actions{ display:flex; gap:16px; flex-wrap:wrap; }

.qt-hero__stat{
  border-left: 2px solid var(--qt-signal);
  padding-left: 22px;
}
.qt-hero__stat-num{
  display:block; font-family: var(--qt-font-mono); font-size:64px; font-weight:600; color: var(--qt-ink); line-height:1;
}
.qt-hero__stat-label{
  display:block; margin-top:10px; font-size:13.5px; color:var(--qt-steel); line-height:1.4;
}

@media (max-width: 860px){
  .qt-hero__inner{ grid-template-columns: 1fr; }
  .qt-hero__stat{ border-left:0; border-top:2px solid var(--qt-signal); padding-left:0; padding-top:18px; }
}

/* =====================================================
   Network diagram (signature element)
   ===================================================== */
.qt-network{ padding: 96px 0; background: var(--qt-mist-2); }
.qt-network .qt-eyebrow{ color: var(--qt-signal); }
.qt-network .qt-section-title{ color: var(--qt-ink); }
.qt-network .qt-section-lede{ color: var(--qt-steel); }

.qt-orgchart{
  position:relative; margin: 36px auto 0; max-width: 980px;
  display:flex; flex-direction:column; align-items:center;
}
.qt-orgchart__hub{
  background: var(--qt-ink);
  color:#fff;
  border-radius: var(--qt-radius);
  padding: 18px 36px;
  text-align:center;
  min-width: 280px;
  cursor: default;
}
.qt-orgchart__hub-title{ font-family: var(--qt-font-display); font-weight:600; font-size:19px; }
.qt-orgchart__hub-sub{ font-size:12.5px; color:#B9C7E0; margin-top:4px; max-width:38ch; }

.qt-orgchart__connectors{
  width:100%; height:96px; display:block; color: #9FB2CE;
}
.qt-orgchart__connectors path{
  transition: stroke .2s ease, stroke-width .2s ease;
}
.qt-orgchart__connectors path.is-active{ stroke: var(--qt-signal); stroke-width:3; }

.qt-orgchart__row{
  display:flex; width:100%; gap:14px;
}
.qt-orgchart__node{
  flex:1;
  display:flex; flex-direction:column; align-items:center; gap:10px;
  background: var(--qt-mist);
  border:1px solid var(--qt-line);
  border-radius: var(--qt-radius);
  padding: 22px 10px 18px;
  text-align:center;
  cursor:pointer;
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}
.qt-orgchart__node:hover, .qt-orgchart__node:focus{
  background:#fff; border-color: var(--qt-signal); transform: translateY(-3px);
  outline:none;
}
.qt-orgchart__icon{
  width:44px; height:44px; border-radius:50%;
  background: var(--qt-blue);
  color:#fff;
  display:flex; align-items:center; justify-content:center;
  transition: background .18s ease;
}
.qt-orgchart__node:hover .qt-orgchart__icon, .qt-orgchart__node:focus .qt-orgchart__icon{ background: var(--qt-signal); }
.qt-orgchart__label{
  display:flex; flex-direction:column; font-size:13px; font-weight:600; color: var(--qt-ink); line-height:1.35;
}

@media (max-width: 860px){
  .qt-orgchart__connectors{ display:none; }
  .qt-orgchart__row{ flex-wrap:wrap; }
  .qt-orgchart__node{ flex: 1 1 calc(33.333% - 10px); min-width: 140px; }
  .qt-orgchart__hub{ margin-bottom: 28px; }
}
@media (max-width: 560px){
  .qt-orgchart__node{ flex: 1 1 calc(50% - 8px); }
}

.qt-diagram__tip{
  text-align:center; margin-top:24px; font-size:14px; color: var(--qt-steel); min-height: 1.4em;
}

.qt-stats{
  display:grid; grid-template-columns: repeat(4,1fr); gap:24px;
  margin-top: 64px; padding-top:40px; border-top:1px solid var(--qt-line);
}
.qt-stat{ text-align:center; }
.qt-stat__num{ display:block; font-family: var(--qt-font-mono); font-size:34px; font-weight:600; color: var(--qt-ink); }
.qt-stat__label{ display:block; margin-top:6px; font-size:12.5px; color: var(--qt-steel); }

.qt-network__note{
  max-width: 760px; margin: 36px auto 0; text-align:center; font-size:14.5px; color: var(--qt-steel); line-height:1.7;
}

@media (max-width: 700px){
  .qt-stats{ grid-template-columns: repeat(2,1fr); row-gap:32px; }
}

/* =====================================================
   Capability centers
   ===================================================== */
.qt-centers{ padding: 96px 0; }
.qt-centers__grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap:1px;
  background: var(--qt-line);
  border:1px solid var(--qt-line);
  margin-top: 56px;
}
.qt-center-card{
  background:#fff; padding: 34px 30px; display:flex; flex-direction:column; gap:10px;
  transition: background .18s ease;
}
.qt-center-card:hover{ background: var(--qt-mist-2); }
.qt-center-card__loc{
  font-family: var(--qt-font-mono); font-size:11.5px; letter-spacing:.1em; text-transform:uppercase; color: var(--qt-signal);
}
.qt-center-card__name{ font-family: var(--qt-font-display); font-size:21px; font-weight:600; }
.qt-center-card__role{ font-size:13.5px; font-weight:600; color: var(--qt-blue); }
.qt-center-card__desc{ font-size:14.5px; color: var(--qt-steel); flex-grow:1; }
.qt-center-card__link{ font-size:13.5px; font-weight:600; color:var(--qt-ink); margin-top:6px; }
.qt-center-card__link:hover{ color: var(--qt-signal); }

@media (max-width: 900px){
  .qt-centers__grid{ grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 620px){
  .qt-centers__grid{ grid-template-columns: 1fr; }
}

/* =====================================================
   Process (how we work)
   ===================================================== */
.qt-process{ padding: 96px 0; background: var(--qt-mist); }
.qt-process__list{
  display:grid; grid-template-columns: repeat(4,1fr); gap:28px; margin-top:56px;
}
.qt-process__step{
  background:#fff; border:1px solid var(--qt-line); padding:28px 24px; border-radius: var(--qt-radius);
}
.qt-process__num{
  font-family: var(--qt-font-mono); font-size:13px; color: var(--qt-signal); font-weight:600;
}
.qt-process__step h3{ font-family: var(--qt-font-display); font-size:18px; margin:12px 0 8px; }
.qt-process__step p{ font-size:13.5px; color: var(--qt-steel); }

@media (max-width: 900px){
  .qt-process__list{ grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 560px){
  .qt-process__list{ grid-template-columns: 1fr; }
}

/* =====================================================
   Products
   ===================================================== */
.qt-products-preview{ padding: 96px 0; }
.qt-product-grid{
  display:grid; grid-template-columns: repeat(4, 1fr); gap:24px;
}
.qt-product-card{ display:block; }
.qt-product-card__media{
  aspect-ratio: 4/3; background: var(--qt-mist); border-radius: var(--qt-radius); overflow:hidden;
  display:flex; align-items:center; justify-content:center; color:#AEBEDA;
  margin-bottom:14px;
}
.qt-product-card__media img{ width:100%; height:100%; object-fit:contain; padding:10px; transition: transform .3s var(--qt-ease); }
.qt-product-card:hover .qt-product-card__media img{ transform: scale(1.04); }
.qt-product-card__center{
  font-family: var(--qt-font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color: var(--qt-signal); margin-bottom:4px;
}
.qt-product-card__title{ font-size:15.5px; font-weight:600; }

.qt-empty-state{
  border: 1.5px dashed var(--qt-line); border-radius: var(--qt-radius);
  padding: 56px 28px; text-align:center; color: var(--qt-steel); font-size:15px;
}

@media (max-width: 980px){ .qt-product-grid{ grid-template-columns: repeat(3,1fr); } }
@media (max-width: 700px){ .qt-product-grid{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 460px){ .qt-product-grid{ grid-template-columns: 1fr; } }

/* Products archive filter bar */
.qt-filter-bar{
  display:flex; flex-wrap:wrap; gap:10px; margin: 32px 0 48px;
}
.qt-filter-pill{
  padding:8px 16px; border-radius:999px; border:1.5px solid var(--qt-line);
  font-size:13.5px; font-weight:500; color: var(--qt-steel);
}
.qt-filter-pill.is-active, .qt-filter-pill:hover{ border-color: var(--qt-ink); color:var(--qt-ink); }

/* =====================================================
   Why choose / services
   ===================================================== */
.qt-why{ padding: 96px 0; }
.qt-why__grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:32px; margin-top:56px; }
.qt-why__card h3{ font-family: var(--qt-font-display); font-size:20px; margin-bottom:12px; }
.qt-why__card p{ font-size:14.5px; color: var(--qt-steel); }

.qt-services{ padding: 0 0 96px; }
.qt-services__grid{ display:grid; grid-template-columns: repeat(5,1fr); gap:20px; margin-top:48px; }
.qt-service{ border-top:2px solid var(--qt-ink); padding-top:16px; }
.qt-service__icon{
  display:flex; align-items:center; justify-content:center;
  width:44px; height:44px; border-radius:50%;
  background: var(--qt-blue); color:#fff; margin-bottom:16px;
}
.qt-service h3{ font-size:15px; font-weight:600; margin-bottom:8px; }
.qt-service p{ font-size:13px; color: var(--qt-steel); }

@media (max-width: 980px){ .qt-why__grid{ grid-template-columns: 1fr; gap:40px; } .qt-services__grid{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 560px){ .qt-services__grid{ grid-template-columns: 1fr; } }

/* =====================================================
   CTA
   ===================================================== */
.qt-cta{ background: var(--qt-ink); color:#fff; padding: 96px 0; }
.qt-cta__inner{ text-align:center; }
.qt-cta__headline{ font-family: var(--qt-font-display); font-size: clamp(28px,3.6vw,42px); font-weight:600; max-width:16ch; margin:0 auto; }
.qt-cta__sub{ color:#B9C7E0; margin:18px auto 32px; max-width:44ch; }
.qt-cta .qt-btn--primary{ background: var(--qt-signal); }
.qt-cta .qt-btn--primary:hover{ background:#B3661F; }

/* =====================================================
   Footer
   ===================================================== */
.qt-footer{ background:#081833; color:#B9C7E0; padding-top:64px; }
.qt-footer__grid{
  display:grid; grid-template-columns: 1.4fr 1fr 1fr; gap:40px; padding-bottom:48px; border-bottom:1px solid #1D3563;
}
.qt-footer__brand .qt-brand__text--footer{ color:#fff; }
.qt-footer__tagline{ font-family: var(--qt-font-mono); font-size:13px; color:#7FA6E0; margin-top:10px; }
.qt-footer__meta{ font-size:13px; margin-top:14px; max-width:34ch; }
.qt-footer__nav h4, .qt-footer__contact h4{ color:#fff; font-size:13px; text-transform:uppercase; letter-spacing:.08em; margin-bottom:16px; }
.qt-footer__list li{ margin-bottom:10px; }
.qt-footer__list a{ font-size:14px; }
.qt-footer__list a:hover{ color:#fff; }
.qt-footer__contact a, .qt-footer__contact p{ display:block; font-size:14px; margin-bottom:10px; }
.qt-footer__bottom{ padding:24px 0; font-size:12.5px; color:#6E85B0; }
.qt-footer__version{ font-family: var(--qt-font-mono); opacity:.55; margin-left:6px; }

@media (max-width: 760px){ .qt-footer__grid{ grid-template-columns: 1fr; } }

/* =====================================================
   Single product & archive page chrome
   ===================================================== */
.qt-page-header{ padding: 56px 0 40px; border-bottom:1px solid var(--qt-line); }
.qt-single-product{ padding: 56px 0 96px; }
.qt-single-product__media{ border-radius: var(--qt-radius); overflow:hidden; background:var(--qt-mist); margin-bottom:32px; padding:24px; text-align:center; }
.qt-single-product__media img{ max-height:560px; width:auto; margin:0 auto; }
.qt-single-product__center{ font-family: var(--qt-font-mono); font-size:12px; text-transform:uppercase; letter-spacing:.08em; color: var(--qt-signal); }
.qt-product-line-badge{
  display:inline-block; margin-left:10px; padding:3px 10px;
  border:1px solid var(--qt-line); border-radius:999px;
  font-family: var(--qt-font-mono); font-size:11px; text-transform:none; letter-spacing:0;
  color: var(--qt-steel); vertical-align:middle;
}
.qt-product-card__line-badge{
  display:inline-block; margin-left:8px; padding:1px 8px;
  border:1px solid var(--qt-line); border-radius:999px;
  font-family: var(--qt-font-mono); font-size:10px; color: var(--qt-steel);
}
.qt-single-product__title{ font-family: var(--qt-font-display); font-size:32px; margin:10px 0 20px; }

.qt-spec-list{ margin:0 0 32px; border-top:1px solid var(--qt-line); }
.qt-spec-row{ display:flex; padding:12px 0; border-bottom:1px solid var(--qt-line); gap:24px; }
.qt-spec-row dt{ width:180px; flex-shrink:0; font-size:13px; font-weight:600; color:var(--qt-steel); text-transform:uppercase; letter-spacing:.04em; }
.qt-spec-row dd{ margin:0; font-size:15px; color:var(--qt-ink); }

.qt-single-product__body-heading{ font-family: var(--qt-font-display); font-size:18px; margin-bottom:12px; }
.qt-single-product__body{ font-size:16px; color:var(--qt-steel); max-width:70ch; }
.qt-back-link{ display:inline-block; margin-bottom:24px; font-size:14px; color:var(--qt-steel); }
.qt-back-link:hover{ color:var(--qt-ink); }
.qt-datasheet-btn{ margin-top:32px; }