.expertise-page {
  background: #fff;
}

.expertise-page h1,
.expertise-page h2,
.expertise-page h3 { overflow-wrap: break-word; }

.expertise-climatisation-industrielle .pneu-route,
.expertise-climatisation-industrielle .pneu-failures { padding-top: 72px; padding-bottom: 72px; }

.expertise-page .site-header {
  position: relative;
}

.expertise-page .main-nav a.active::after {
  right: 0;
}

.exp-hero {
  position: relative;
  min-height: 720px;
  display: grid;
  grid-template-columns: minmax(0, .96fr) minmax(520px, 1.04fr);
  overflow: hidden;
  background: var(--ink-deep);
  color: #fff;
}

.exp-hero::before {
  content: "";
  position: absolute;
  inset: 0 50% 0 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 14% 18%, rgba(33,166,225,.13), transparent 31%),
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: auto, 52px 52px, 52px 52px;
  -webkit-mask-image: linear-gradient(90deg, #000, transparent 95%);
  mask-image: linear-gradient(90deg, #000, transparent 95%);
}

.exp-hero::after {
  content: "";
  position: absolute;
  z-index: 2;
  left: 0;
  bottom: 0;
  width: 92px;
  height: 5px;
  background: var(--green);
}

.js .exp-hero .reveal {
  opacity: 1;
  transform: none;
}

.exp-hero-copy {
  position: relative;
  z-index: 3;
  min-width: 0;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 72px clamp(48px, 5.2vw, 84px) 76px max(24px, calc((100vw - var(--container)) / 2));
}

.exp-hero-inner {
  min-width: 0;
  width: min(100%, 600px);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(42px, 7vh, 72px);
  color: #91aab6;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.breadcrumbs a:hover { color: var(--green); }
.breadcrumbs span { color: var(--green); }

.exp-label {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 18px;
  color: var(--green);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.exp-label::before {
  content: "";
  width: 34px;
  height: 2px;
  background: currentColor;
}

.exp-hero h1 {
  max-width: 660px;
  margin-bottom: 24px;
  font-size: clamp(48px, 4.7vw, 59px);
  font-weight: 780;
  letter-spacing: -.052em;
  text-wrap: balance;
}

.exp-lead {
  max-width: 550px;
  margin-bottom: 32px;
  padding-left: 18px;
  border-left: 1px solid rgba(159,195,45,.7);
  color: #c4d4dc;
  font-size: 17px;
  line-height: 1.7;
}

.exp-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.exp-actions .secondary-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,.35);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}

.exp-actions .secondary-link svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.exp-capabilities {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 42px;
  color: #89a2ae;
  font-size: 10px;
  font-weight: 850;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.exp-capabilities span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.exp-capabilities span::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--green);
}

.exp-hero-media {
  position: relative;
  min-width: 0;
  margin: 38px 38px 38px 0;
  overflow: hidden;
  background: #0a3045;
  box-shadow: 0 30px 80px rgba(0,0,0,.28);
}

.exp-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82) contrast(1.04);
  transition: transform 1.2s cubic-bezier(.2,.7,.2,1);
}

.exp-hero:hover .exp-hero-media img { transform: scale(1.018); }

.climate-inline-media {
  height: 360px;
  margin: 0;
  overflow: hidden;
  background: #dfe9ec;
}

.climate-inline-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.climate-diffusion .pneu-route-list { border-top: 0; }
.climate-diffusion .pneu-route-copy h2 { max-width: 440px; }

@media (max-width: 760px) {
  .climate-inline-media { height: 260px; }
}

.exp-hero-media::before {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.13);
  background: linear-gradient(90deg, rgba(4,27,41,.25), transparent 38%), linear-gradient(0deg, rgba(4,27,41,.62), transparent 42%);
}

.exp-number {
  position: absolute;
  z-index: 2;
  right: 26px;
  top: 24px;
  padding: 10px 13px;
  border: 1px solid rgba(255,255,255,.28);
  background: rgba(4,27,41,.46);
  color: rgba(255,255,255,.9);
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .16em;
  backdrop-filter: blur(9px);
}

.exp-number .semantic-icon { width: 18px; height: 18px; color: var(--green); }
.exp-number small { font-size: 9px; font-weight: 900; letter-spacing: .13em; }

.exp-signal {
  position: absolute;
  z-index: 3;
  right: 24px;
  bottom: 24px;
  width: min(365px, calc(100% - 48px));
  padding: 21px 24px 22px;
  border: 1px solid rgba(203,235,244,.24);
  border-left: 3px solid var(--green);
  background: linear-gradient(135deg, rgba(3,24,36,.92), rgba(7,52,75,.84));
  color: #fff;
  box-shadow: 0 18px 45px rgba(0,0,0,.28);
  backdrop-filter: blur(16px) saturate(1.15);
}

.exp-signal::before { content: "POINT CLÉ"; display: block; margin-bottom: 10px; color: var(--green); font-size: 9px; font-weight: 900; letter-spacing: .15em; }

.signal-value {
  display: block;
  margin-bottom: 9px;
  color: #fff;
  font-size: clamp(29px, 3vw, 42px);
  font-weight: 900;
  letter-spacing: -.06em;
  line-height: 1;
}

.signal-copy {
  display: block;
  max-width: 285px;
  color: #c8dce5;
  font-size: 12px;
  font-weight: 650;
  line-height: 1.55;
}

.exp-intro {
  padding: 125px 0 110px;
}

.exp-intro-grid {
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: 100px;
  align-items: start;
}

.exp-sticky-title {
  position: sticky;
  top: 115px;
}

.mini-index {
  display: block;
  margin-bottom: 30px;
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .15em;
}

.exp-sticky-title h2,
.exp-section-head h2,
.project-cta h2 {
  margin-bottom: 0;
  font-size: clamp(39px, 4.2vw, 58px);
  letter-spacing: -.052em;
}

.exp-prose > p {
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 17px;
}

.outcome-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 46px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.outcome {
  min-height: 150px;
  padding: 26px 22px 24px 0;
}

.outcome + .outcome {
  padding-left: 22px;
  border-left: 1px solid var(--line);
}

.outcome span {
  display: block;
  margin-bottom: 22px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 900;
}

.outcome span .semantic-icon { width: 25px; height: 25px; }

.outcome h3 {
  margin: 0;
  font-size: 17px;
  line-height: 1.35;
}

.system-section {
  position: relative;
  overflow: hidden;
  padding: 110px 0;
  background: #f3f8f9;
}

.system-section::before {
  content: "";
  position: absolute;
  right: -250px;
  top: -340px;
  width: 700px;
  height: 700px;
  border: 1px solid rgba(0,120,188,.1);
  border-radius: 50%;
  box-shadow: 0 0 0 95px rgba(0,120,188,.025), 0 0 0 190px rgba(0,120,188,.018);
}

.exp-section-head {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  align-items: end;
  gap: 75px;
  margin-bottom: 58px;
}

.exp-section-head p {
  margin: 0 0 5px;
  color: var(--muted);
}

.flow-line {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: #fff;
  box-shadow: 0 22px 70px rgba(4,31,47,.08);
}

.flow-line::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 12%;
  right: 12%;
  height: 1px;
  background: #c9dce3;
}

.flow-step {
  position: relative;
  min-height: 215px;
  display: grid;
  align-content: center;
  justify-items: center;
  padding: 32px;
  text-align: center;
}

.flow-node {
  position: relative;
  z-index: 2;
  width: 55px;
  height: 55px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  border: 8px solid #fff;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 1px #c9dce3;
  color: var(--green);
  font-size: 11px;
  font-weight: 900;
}

.flow-node .semantic-icon { width: 23px; height: 23px; }

.flow-step h3 {
  margin-bottom: 7px;
  font-size: 18px;
}

.flow-step p {
  max-width: 200px;
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.6;
}

.tech-section {
  padding: 120px 0;
  background: var(--ink-deep);
  color: #fff;
}

.tech-section .exp-section-head p { color: #adc2cc; }
.tech-section .section-kicker { color: var(--green); }

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255,255,255,.13);
  border-left: 1px solid rgba(255,255,255,.13);
}

.tech-card {
  min-height: 330px;
  padding: 34px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid rgba(255,255,255,.13);
  border-bottom: 1px solid rgba(255,255,255,.13);
  background: #082b3f;
  transition: transform .3s, background .3s;
}

.tech-card:first-child { background: var(--blue); }
.tech-card:hover { position: relative; z-index: 2; transform: translateY(-6px); background: #10435e; }
.tech-card:first-child:hover { background: #0786c9; }

.tech-tag {
  align-self: flex-start;
  padding: 6px 10px;
  border: 1px solid rgba(255,255,255,.28);
  color: var(--green);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.tech-card:first-child .tech-tag { color: #fff; }

.tech-card h3 {
  margin: auto 0 16px;
  font-size: 27px;
}

.tech-card p {
  margin: 0;
  color: #adc2cc;
  font-size: 14.5px;
  line-height: 1.65;
}

.tech-card:first-child p { color: #e0f1f8; }

.criteria-section {
  padding: 120px 0;
}

.criteria-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 100px;
  align-items: start;
}

.criteria-copy h2 {
  margin-bottom: 24px;
  font-size: clamp(39px, 4vw, 56px);
}

.criteria-copy > p {
  color: var(--muted);
  font-size: 16px;
}

.criteria-list {
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.criteria-list li {
  min-height: 68px;
  display: grid;
  grid-template-columns: 38px 1fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  font-weight: 750;
}

.criteria-list span {
  color: var(--green-dark);
  font-size: 10px;
  font-weight: 900;
}

.criteria-list span .semantic-icon { width: 21px; height: 21px; }

.application-panel {
  position: sticky;
  top: 115px;
  padding: 40px;
  background: #f1f7f8;
}

.application-panel h3 {
  margin-bottom: 28px;
  font-size: 24px;
}

.application-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.application-list span {
  padding: 9px 12px;
  border: 1px solid #cbdce2;
  background: #fff;
  color: #4c6571;
  font-size: 12.5px;
  font-weight: 800;
}

.application-note {
  margin: 30px 0 0;
  padding-top: 25px;
  border-top: 1px solid #cbdce2;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.method-section {
  padding: 110px 0;
  background: #f5f9fa;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 55px;
}

.method-step {
  position: relative;
  min-height: 230px;
  padding: 30px 28px;
  border-top: 1px solid #cadbe1;
  border-bottom: 1px solid #cadbe1;
}

.method-step + .method-step { border-left: 1px solid #cadbe1; }
.method-step:first-child { background: var(--ink); color: #fff; border-color: var(--ink); }

.method-step strong {
  display: block;
  margin-bottom: 55px;
  color: var(--green);
  font-size: 12px;
}

.method-step strong .semantic-icon { width: 25px; height: 25px; }

.method-step h3 { margin-bottom: 10px; font-size: 19px; }
.method-step p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }
.method-step:first-child p { color: #b6cad3; }

.airpro-service {
  position: relative;
  overflow: hidden;
  padding: 110px 0;
  background-color: #f3f7f8;
  background-image:
    radial-gradient(ellipse at 92% 5%, rgba(33,166,225,.13), transparent 38%),
    linear-gradient(rgba(7,37,54,.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7,37,54,.032) 1px, transparent 1px),
    linear-gradient(135deg, #f8fbfc 0%, #eef4f6 58%, #e7f0f3 100%);
  background-size: auto, 54px 54px, 54px 54px, auto;
  color: var(--ink);
}

.airpro-service::before {
  content: "";
  position: absolute;
  right: -220px;
  top: -260px;
  width: 620px;
  height: 620px;
  border: 1px solid rgba(0,120,188,.1);
  border-radius: 50%;
  box-shadow: 0 0 0 95px rgba(0,120,188,.025), 0 0 0 190px rgba(0,120,188,.016);
}

.airpro-service-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: clamp(55px, 7vw, 100px);
  align-items: center;
}

.airpro-service-media {
  position: relative;
  min-height: 560px;
  margin: 0;
  overflow: hidden;
  background: #0a3045;
  box-shadow: 0 28px 70px rgba(0,0,0,.28);
}

.airpro-service-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(0deg, rgba(4,27,41,.9), transparent 45%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.12);
}

.airpro-service-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82) contrast(1.03);
  transition: transform .7s ease;
}

.airpro-service-media:hover img { transform: scale(1.025); }

.airpro-service-media figcaption {
  position: absolute;
  z-index: 2;
  left: 27px;
  right: 27px;
  bottom: 25px;
  padding-left: 14px;
  border-left: 3px solid var(--green);
  color: #d6e4ea;
  font-size: 12px;
  line-height: 1.55;
}

.airpro-service-copy { max-width: 650px; }
.airpro-service-copy .section-kicker.light { color: var(--blue); }

.airpro-service-copy h2 {
  margin-bottom: 24px;
  font-size: clamp(40px, 4.1vw, 58px);
  letter-spacing: -.052em;
  text-wrap: balance;
}

.airpro-service-copy > p {
  color: #5b707b;
  font-size: 14px;
  line-height: 1.75;
}

.airpro-service-copy .airpro-service-lead {
  color: #294653;
  font-size: 17px;
}

.airpro-service-copy ul {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 30px 0 32px;
  padding: 0;
  border-top: 1px solid rgba(7,37,54,.14);
  border-bottom: 1px solid rgba(7,37,54,.14);
  list-style: none;
}

.airpro-service-copy li {
  position: relative;
  min-height: 82px;
  padding: 19px 15px 17px 20px;
  color: #3e5966;
  font-size: 11px;
  font-weight: 750;
  line-height: 1.5;
}

.airpro-service-copy li + li { border-left: 1px solid rgba(7,37,54,.14); }
.airpro-service-copy li::before { content: ""; position: absolute; left: 0; top: 26px; width: 6px; height: 6px; border-radius: 50%; background: var(--green); }

.related-section {
  padding: 100px 0;
}

.related-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 40px;
}

.related-head h2 { margin: 0; font-size: clamp(34px, 3.5vw, 48px); }

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.related-card {
  position: relative;
  min-height: 260px;
  overflow: hidden;
  color: #fff;
}

.related-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .55s ease;
}

.related-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(3,24,36,.95), rgba(3,24,36,.06) 75%);
}

.related-card-content {
  position: absolute;
  z-index: 2;
  inset: auto 25px 22px;
}

.related-card small { color: var(--green); font-size: 10px; font-weight: 900; letter-spacing: .11em; }
.related-card h3 { margin: 7px 0 0; font-size: 19px; }
.related-card:hover img { transform: scale(1.045); }
.climate-applications .related-head > p { max-width: 470px; margin: 0; color: var(--muted); }
.climate-application-card { min-height: 330px; }
.climate-application-card .related-card-content { inset: auto 25px 24px; }
.climate-application-card .related-card-content p { margin: 11px 0 0; color: #d7e4e9; font-size: 12px; line-height: 1.55; }

.project-cta {
  position: relative;
  overflow: hidden;
  padding: 95px 0;
  background: var(--blue);
  color: #fff;
}

.project-cta::before {
  content: "";
  position: absolute;
  right: -140px;
  top: -220px;
  width: 560px;
  height: 560px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 50%;
  box-shadow: 0 0 0 90px rgba(255,255,255,.04), 0 0 0 180px rgba(255,255,255,.025);
}

.project-cta-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 50px;
}

.project-cta p {
  max-width: 690px;
  margin: 18px 0 0;
  color: #d7edf7;
}

.project-cta-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
}

.project-cta-actions a:last-child {
  color: #fff;
  font-size: 13.5px;
  font-weight: 800;
  text-align: center;
}

/* Expertise 01 — dossier technique dépoussiérage */
.dust-diagnostic,
.dust-process,
.dust-signals,
.dust-brief,
.dust-faq {
  position: relative;
  scroll-margin-top: 100px;
}

.semantic-icon {
  width: 22px;
  height: 22px;
  display: block;
  flex: 0 0 auto;
}

.dust-diagnostic {
  padding: 125px 0;
  overflow: hidden;
}

.dust-diagnostic::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -170px;
  bottom: -220px;
  width: 480px;
  height: 480px;
  border: 1px solid rgba(0,120,188,.09);
  border-radius: 50%;
  box-shadow: 0 0 0 75px rgba(0,120,188,.025), 0 0 0 150px rgba(0,120,188,.018);
}

.dust-diagnostic-grid {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  gap: 105px;
  align-items: start;
}

.dust-diagnostic-copy {
  position: sticky;
  top: 115px;
}

.dust-diagnostic-copy h2,
.dust-choice-head h2,
.dust-process-intro h2,
.dust-signals-head h2,
.dust-brief-copy h2,
.dust-faq-heading h2 {
  margin-bottom: 25px;
  font-size: clamp(39px, 4.2vw, 57px);
  letter-spacing: -.052em;
}

.dust-diagnostic-copy p,
.dust-process-intro p,
.dust-faq-heading p {
  color: var(--muted);
}

.dust-profile {
  border-top: 1px solid var(--line);
}

.dust-profile-item {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 20px;
  padding: 27px 0;
  border-bottom: 1px solid var(--line);
}

.dust-profile-item > span {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid #c6d8df;
  color: var(--blue);
  font-size: 10px;
  font-weight: 900;
}

.dust-profile-item > span .semantic-icon { width: 21px; height: 21px; }

.dust-profile-item h3 { margin-bottom: 8px; font-size: 19px; }
.dust-profile-item p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.65; }

.dust-visual {
  grid-column: 1 / -1;
  margin: 22px 0 0;
  position: relative;
}

.dust-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.dust-material-visual img {
  aspect-ratio: 2.2 / 1;
  object-position: center 54%;
  box-shadow: 0 26px 70px rgba(4,31,47,.16);
}

.dust-material-visual {
  width: 92%;
  margin: 52px 0 0 auto;
  padding-bottom: 42px;
}

.dust-material-visual figcaption {
  position: absolute;
  left: -52px;
  bottom: 0;
  width: min(500px, 62%);
  min-height: 122px;
  padding: 24px 27px 24px 31px;
  border-left: 5px solid var(--green);
  background: rgba(255,255,255,.97);
  box-shadow: 0 18px 48px rgba(4,31,47,.16);
  color: var(--ink);
  backdrop-filter: blur(12px);
}

.dust-material-visual figcaption span {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.dust-material-visual figcaption p {
  margin: 0;
  color: #536d79;
  font-size: 14.5px;
  line-height: 1.65;
}

.dust-choice {
  padding: 120px 0;
  background: var(--ink-deep);
  color: #fff;
}

.dust-choice-head,
.dust-signals-head {
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  align-items: end;
  gap: 90px;
  margin-bottom: 58px;
}

.dust-choice-head h2,
.dust-signals-head h2 { margin-bottom: 0; }
.dust-choice-head > p { margin: 0 0 5px; color: #a9c0cb; }

.dust-tech-list { border-top: 1px solid rgba(255,255,255,.15); }

.dust-tech {
  display: grid;
  grid-template-columns: 48px .8fr .82fr 1.1fr 1.08fr;
  gap: 24px;
  align-items: start;
  padding: 29px 22px 29px 0;
  border-bottom: 1px solid rgba(255,255,255,.15);
  transition: background .25s, padding .25s;
}

.dust-tech:hover {
  padding-left: 18px;
  background: rgba(255,255,255,.035);
}

.dust-tech-index { width: 38px; height: 38px; display: grid; place-items: center; margin-top: 1px; background: rgba(159,195,45,.09); color: var(--green); }
.dust-tech-index .semantic-icon { width: 20px; height: 20px; }
.dust-tech-title span { display: block; margin-bottom: 7px; color: var(--green); font-size: 9px; font-weight: 900; letter-spacing: .11em; text-transform: uppercase; }
.dust-tech-title h3 { margin: 0; font-size: 23px; }
.dust-tech small { display: block; margin-bottom: 8px; color: #7895a3; font-size: 9px; font-weight: 900; letter-spacing: .12em; }
.dust-tech p { margin: 0; color: #c2d1d8; font-size: 14px; line-height: 1.65; }
.dust-tech-watch { padding-left: 22px; border-left: 1px solid rgba(255,255,255,.12); }

.dust-process { padding: 125px 0; }

.dust-process-grid {
  display: grid;
  grid-template-columns: .78fr 1.22fr;
  gap: 115px;
  align-items: start;
}

.dust-chain-visual { display: grid; grid-template-columns: minmax(0, 1fr) 270px; margin: 0 0 38px; padding: 14px; overflow: hidden; background: #edf4f6; box-shadow: 0 24px 70px rgba(4,31,47,.13); }
.dust-chain-visual img { height: 100%; min-height: 420px; object-fit: cover; }
.dust-chain-visual figcaption { display: flex; flex-direction: column; justify-content: center; gap: 18px; padding: 30px; border-left: 4px solid var(--green); background: #072536; color: #fff; }
.dust-chain-visual figcaption strong { margin-bottom: 13px; font-size: 22px; line-height: 1.25; }
.dust-chain-visual figcaption span { display: inline-flex; align-items: center; gap: 10px; color: #c6d7de; font-size: 13px; font-weight: 750; }
.dust-chain-visual figcaption i { width: 25px; height: 25px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.23); border-radius: 50%; color: var(--green); font-size: 8px; font-style: normal; font-weight: 900; }
.dust-chain-visual figcaption i .semantic-icon { width: 13px; height: 13px; }

.dust-process-intro { position: sticky; top: 115px; }
.dust-process-intro h2 { margin-bottom: 24px; }

.dust-process-line { position: relative; }
.dust-process-line::before { content: ""; position: absolute; top: 30px; bottom: 30px; left: 29px; width: 1px; background: #c6d9e0; }

.dust-process-step {
  position: relative;
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 27px;
  padding-bottom: 48px;
}

.dust-process-step:last-child { padding-bottom: 0; }
.dust-process-number { position: relative; z-index: 2; width: 60px; height: 60px; display: grid; place-items: center; border: 1px solid #c6d9e0; border-radius: 50%; background: #fff; color: var(--blue); font-size: 10px; font-weight: 900; }
.dust-process-number .semantic-icon { width: 25px; height: 25px; }
.dust-process-step h3 { margin: 4px 0 9px; font-size: 23px; }
.dust-process-step p { max-width: 590px; margin: 0 0 13px; color: var(--muted); font-size: 15.5px; line-height: 1.7; }
.dust-process-step small { display: inline-flex; padding: 6px 9px; background: #eef5f7; color: #496572; font-size: 9px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }

.dust-signals {
  padding: 115px 0;
  background: #f2f7f8;
}

.dust-signals-head > p { margin: 0 0 5px; color: var(--muted); }

.dust-signal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid #c9dbe1;
  border-left: 1px solid #c9dbe1;
}

.dust-symptom {
  min-height: 230px;
  padding: 32px;
  border-right: 1px solid #c9dbe1;
  border-bottom: 1px solid #c9dbe1;
  background: rgba(255,255,255,.66);
}

.dust-symptom:first-child { background: var(--ink); color: #fff; }
.dust-symptom > span { display: block; margin-bottom: 50px; color: var(--green-dark); font-size: 10px; font-weight: 900; }
.dust-symptom > span { width: 46px; height: 46px; display: grid; place-items: center; border: 1px solid #c6d8df; }
.dust-symptom > span .semantic-icon { width: 23px; height: 23px; }
.dust-symptom:first-child > span { color: var(--green); }
.dust-symptom h3 { margin-bottom: 12px; font-size: 22px; }
.dust-symptom p { max-width: 440px; margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.65; }
.dust-symptom:first-child p { color: #b8cbd4; }
.dust-disclaimer { margin: 24px 0 0; color: #6c8591; font-size: 13px; line-height: 1.6; }

.dust-brief {
  overflow: hidden;
  padding: 105px 0;
  background: var(--blue);
  color: #fff;
}

.dust-brief::before { content: ""; position: absolute; right: -170px; top: -260px; width: 620px; height: 620px; border: 1px solid rgba(255,255,255,.16); border-radius: 50%; box-shadow: 0 0 0 90px rgba(255,255,255,.035), 0 0 0 180px rgba(255,255,255,.02); }
.dust-brief-grid { position: relative; display: grid; grid-template-columns: .9fr 1.1fr; gap: 110px; align-items: center; }
.dust-brief-copy h2 { margin-bottom: 22px; }
.dust-brief-copy > p { max-width: 530px; margin-bottom: 30px; color: #d8edf7; }
.dust-brief-copy .button { margin-right: 20px; }
.dust-phone { display: inline-block; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,.45); font-size: 13.5px; font-weight: 800; }

.dust-brief-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.28); }
.dust-brief-list li { min-height: 64px; display: grid; grid-template-columns: 48px 1fr; align-items: center; border-bottom: 1px solid rgba(255,255,255,.28); font-size: 15px; font-weight: 750; }
.dust-brief-list span { color: var(--green); font-size: 9px; font-weight: 900; }
.dust-brief-list span .semantic-icon { width: 19px; height: 19px; }

.dust-faq { padding: 120px 0; }
.dust-faq-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 110px; align-items: start; }
.dust-faq-heading { position: sticky; top: 115px; }
.dust-faq-item { border-top: 1px solid var(--line); }
.dust-faq-item:last-child { border-bottom: 1px solid var(--line); }
.dust-faq-item summary { position: relative; min-height: 88px; display: grid; grid-template-columns: 46px 1fr; align-items: center; gap: 12px; padding-right: 42px; list-style: none; cursor: pointer; color: var(--ink); font-size: 16px; font-weight: 800; line-height: 1.45; }
.dust-faq-item summary::-webkit-details-marker { display: none; }
.dust-faq-item summary::after { content: "+"; position: absolute; right: 9px; color: var(--blue); font-size: 25px; font-weight: 400; }
.dust-faq-item[open] summary::after { content: "\2212"; }
.dust-faq-item summary span { color: var(--green-dark); font-size: 9px; font-weight: 900; }
.dust-faq-item summary span .semantic-icon { width: 21px; height: 21px; }
.dust-faq-item > div { padding: 0 42px 24px 58px; }
.dust-faq-item p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.7; }

/* Expertise ventilation — dossier aéraulique */
.vent-diagnostic, .vent-balance, .vent-cutaway, .vent-strategies, .vent-measurements, .vent-brief { position: relative; scroll-margin-top: 100px; }
.vent-diagnostic { padding: 92px 0 0; overflow: hidden; }
.vent-diagnostic-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 34px 90px; align-items: start; }
.vent-diagnostic-copy { position: static; padding-top: 2px; }
.vent-diagnostic-copy h2, .vent-section-head h2, .vent-cutaway-copy h2, .vent-measurements-copy h2, .vent-brief-copy h2 { margin-bottom: 23px; font-size: clamp(39px, 4vw, 57px); letter-spacing: -.052em; }
.vent-diagnostic-copy h2 { max-width: 560px; font-size: clamp(39px, 3.35vw, 52px); line-height: 1.04; }
.vent-diagnostic-copy .mini-index { margin-bottom: 24px; }
.vent-diagnostic-copy p { color: var(--muted); font-size: 16.5px; line-height: 1.75; }
.vent-diagnostic-list { border-top: 1px solid var(--line); }
.vent-diagnostic-item { min-height: 140px; display: grid; grid-template-columns: 58px 1fr; gap: 22px; align-items: center; border-bottom: 1px solid var(--line); }
.vent-diagnostic-item > span { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 50%; background: #eaf5f8; color: var(--blue); }
.vent-diagnostic-item h3 { margin-bottom: 8px; font-size: 20px; }
.vent-diagnostic-item p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.65; }
.vent-visual { position: relative; overflow: hidden; background: #dfeaec; }
.vent-visual img { width: 100%; height: 100%; display: block; object-fit: cover; }
.vent-airflow-stage { position: relative; width: min(calc(100% - 48px), var(--container)); margin: 42px auto 0; overflow: hidden; background: transparent; }
.vent-airflow-visual { width: 100%; aspect-ratio: 16 / 9; }

.vent-balance { padding: 120px 0; overflow: hidden; background: var(--ink-deep); color: #fff; }
.vent-balance::before { content: ""; position: absolute; right: -240px; bottom: -350px; width: 700px; height: 700px; border: 1px solid rgba(255,255,255,.08); border-radius: 50%; box-shadow: 0 0 0 100px rgba(255,255,255,.018), 0 0 0 200px rgba(255,255,255,.012); }
.vent-section-head { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: end; margin-bottom: 60px; }
.vent-section-head p { margin: 0 0 6px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.vent-balance .vent-section-head p { color: #b4c9d2; }
.vent-balance .vent-airflow-stage { margin: 0 auto 48px; }
.vent-balance-line { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.15); border-left: 1px solid rgba(255,255,255,.15); }
.vent-balance-step { min-height: 250px; padding: 30px; border-right: 1px solid rgba(255,255,255,.15); border-bottom: 1px solid rgba(255,255,255,.15); }
.vent-balance-step > span { width: 52px; height: 52px; display: grid; place-items: center; margin-bottom: 54px; background: rgba(255,255,255,.07); color: var(--green); }
.vent-balance-step h3 { margin-bottom: 10px; font-size: 21px; }
.vent-balance-step p { margin: 0; color: #adc2cc; font-size: 14.5px; line-height: 1.65; }
.vent-equation { position: relative; display: flex; align-items: center; justify-content: center; gap: 22px; margin-top: 38px; padding: 25px; background: rgba(255,255,255,.06); font-size: 14px; font-weight: 800; }
.vent-equation i { color: var(--green); font-size: 24px; font-style: normal; }
.vent-equation b { color: var(--blue-bright); font-size: 24px; }
.vent-equation strong { color: var(--green); font-size: 17px; }

.vent-cutaway { padding: 125px 0 0; overflow: hidden; }
.vent-cutaway-grid { display: block; }
.vent-cutaway-copy { max-width: 820px; margin-bottom: 50px; }
.vent-cutaway-copy > p { max-width: 720px; color: var(--muted); font-size: 16.5px; line-height: 1.75; }
.vent-cutaway-display { position: relative; width: 100%; background: #eaf0f2; }
.vent-cutaway-display::after { content: ""; position: absolute; inset: 45% 0 0; background: linear-gradient(0deg, rgba(3,24,36,.78), transparent); pointer-events: none; }
.vent-cutaway-visual { width: 100%; margin: 0; }
.vent-cutaway-visual img { width: 100%; height: auto; display: block; }
.vent-cutaway-overlay { position: absolute; z-index: 2; left: 50%; bottom: 38px; transform: translateX(-50%); }
.vent-cutaway-side { display: grid; grid-template-columns: .8fr 1.2fr; align-items: stretch; border-top: 4px solid var(--green); background: rgba(4,27,41,.92); color: #fff; box-shadow: 0 24px 70px rgba(0,0,0,.3); backdrop-filter: blur(15px); }
.vent-cutaway-label { display: flex; flex-direction: column; justify-content: center; padding: 27px 30px; border-right: 1px solid rgba(255,255,255,.16); }
.vent-cutaway-label .mini-index { margin-bottom: 10px; color: var(--green); }
.vent-cutaway-label p { margin: 0; color: #c2d4dc; font-size: 13.5px; line-height: 1.55; }
.vent-cutaway-points { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; padding: 0; list-style: none; }
.vent-cutaway-points li { min-height: 128px; display: grid; grid-template-columns: 34px 1fr; gap: 12px; align-items: center; padding: 23px; }
.vent-cutaway-points li + li { border-left: 1px solid rgba(255,255,255,.16); }
.vent-cutaway-points li > span { color: var(--green-dark); }
.vent-cutaway-points b { display: block; margin-bottom: 5px; font-size: 15px; }
.vent-cutaway-points small { display: block; color: #b9cdd6; font-size: 12.5px; line-height: 1.5; }

.vent-strategies { padding: 115px 0; background: #f1f7f8; }
.vent-strategies .vent-section-head { align-items: center; }
.vent-strategies .vent-section-head p { margin-bottom: 0; }
.vent-strategy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.vent-strategy { min-height: 390px; display: flex; flex-direction: column; padding: 34px; background: #fff; border-top: 4px solid transparent; box-shadow: 0 18px 55px rgba(4,31,47,.06); transition: transform .28s, border-color .28s; }
.vent-strategy:hover { transform: translateY(-7px); border-top-color: var(--green); }
.vent-strategy-icon { width: 54px; height: 54px; display: grid; place-items: center; margin-bottom: 58px; border-radius: 50%; background: #e9f4f7; color: var(--blue); }
.vent-strategy small { color: var(--green-dark); font-size: 10.5px; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.vent-strategy h3 { margin: 9px 0 15px; font-size: 26px; }
.vent-strategy p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.65; }
.vent-strategy strong { margin-top: auto; padding-top: 24px; border-top: 1px solid var(--line); color: #3e5865; font-size: 13px; line-height: 1.55; }

.vent-measurements { padding: 115px 0; overflow: hidden; background: var(--blue); color: #fff; }
.vent-measurements::after { content: ""; position: absolute; left: -130px; top: -220px; width: 480px; height: 480px; border: 1px solid rgba(255,255,255,.16); border-radius: 50%; box-shadow: 0 0 0 75px rgba(255,255,255,.035), 0 0 0 150px rgba(255,255,255,.02); }
.vent-measurements-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .85fr 1.15fr; gap: 110px; align-items: center; }
.vent-measurements-copy p { color: #d7ecf5; font-size: 16.5px; line-height: 1.75; }
.vent-measurement-list { border-top: 1px solid rgba(255,255,255,.25); }
.vent-measurement-list article { min-height: 116px; display: grid; grid-template-columns: 58px 1fr; gap: 18px; align-items: center; border-bottom: 1px solid rgba(255,255,255,.25); }
.vent-measurement-list article > span { color: var(--green); }
.vent-measurement-list h3 { margin-bottom: 6px; font-size: 19px; }
.vent-measurement-list p { margin: 0; color: #d4e9f2; font-size: 14.5px; }

.vent-brief { padding: 120px 0; background: #fff; }
.vent-brief-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; align-items: center; }
.vent-brief-copy > p { max-width: 540px; margin-bottom: 30px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.vent-brief-copy .button { margin-right: 18px; }
.vent-phone { display: inline-block; padding: 9px 0; border-bottom: 1px solid #9eb0b8; color: var(--ink); font-size: 13.5px; font-weight: 800; }
.vent-brief-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.vent-brief-list li { min-height: 72px; display: grid; grid-template-columns: 48px 1fr; align-items: center; border-bottom: 1px solid var(--line); color: #334e5b; font-size: 15px; font-weight: 750; }
.vent-brief-list span { color: var(--green-dark); }
.vent-faq { background: #f3f8f9; }

/* Expertise COV — dossier composé / flux / traitement */
.cov-identity, .cov-capture, .cov-choice, .cov-train, .cov-variability, .cov-brief { position: relative; scroll-margin-top: 100px; }
.cov-identity { padding: 115px 0; }
.cov-identity-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 95px; align-items: start; }
.cov-identity-copy h2, .cov-section-head h2, .cov-train-heading h2, .cov-variability-copy h2, .cov-brief-copy h2 { margin-bottom: 23px; font-size: clamp(39px, 4vw, 57px); letter-spacing: -.052em; }
.cov-identity-copy p, .cov-train-heading p, .cov-variability-copy p, .cov-brief-copy > p { color: var(--muted); font-size: 16px; line-height: 1.75; }
.cov-identity-list { border-top: 1px solid var(--line); }
.cov-identity-item { min-height: 135px; display: grid; grid-template-columns: 52px 1fr; gap: 20px; align-items: center; border-bottom: 1px solid var(--line); }
.cov-identity-item > span { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%; background: #eaf4f7; color: var(--blue); }
.cov-identity-item h3 { margin-bottom: 7px; font-size: 19px; }
.cov-identity-item p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.6; }

.cov-capture { padding: 115px 0; overflow: hidden; background: var(--ink-deep); color: #fff; }
.cov-section-head { display: grid; grid-template-columns: 1.15fr .85fr; gap: 75px; align-items: end; margin-bottom: 54px; }
.cov-section-head p { margin: 0 0 6px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.cov-capture .cov-section-head p { color: #b8ccd5; }
.cov-media { width: 100%; margin: 0; overflow: hidden; }
.cov-media img { width: 100%; height: auto; display: block; }
.cov-capture-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 34px; border-top: 1px solid rgba(255,255,255,.15); border-left: 1px solid rgba(255,255,255,.15); }
.cov-capture-grid article { min-height: 205px; padding: 28px; border-right: 1px solid rgba(255,255,255,.15); border-bottom: 1px solid rgba(255,255,255,.15); }
.cov-capture-grid article > span { display: block; margin-bottom: 38px; color: var(--green); }
.cov-capture-grid h3 { margin-bottom: 9px; font-size: 21px; }
.cov-capture-grid p { margin: 0; color: #b8ccd5; font-size: 14.5px; line-height: 1.65; }

.cov-choice { padding: 120px 0; }
.cov-treatment-list { border-top: 1px solid var(--line); }
.cov-treatment { display: grid; grid-template-columns: 64px .7fr 1fr 1fr; gap: 28px; align-items: center; min-height: 180px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.cov-treatment-icon { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); color: var(--green); }
.cov-treatment small { display: block; margin-bottom: 8px; color: var(--green-dark); font-size: 10px; font-weight: 900; letter-spacing: .12em; }
.cov-treatment h3 { margin-bottom: 5px; font-size: 25px; }
.cov-treatment p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }

.cov-train { padding: 115px 0; background: #f1f6f8; }
.cov-train-heading { max-width: 820px; margin-bottom: 45px; }
.cov-train-heading p { max-width: 720px; }
.cov-train-media { background: #151a20; }

.cov-variability { padding: 115px 0; overflow: hidden; background: var(--blue); color: #fff; }
.cov-variability-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 105px; align-items: center; }
.cov-variability-copy p { color: #d8edf5; }
.cov-variability-list { border-top: 1px solid rgba(255,255,255,.26); }
.cov-variability-list article { min-height: 112px; display: grid; grid-template-columns: 54px 1fr; gap: 17px; align-items: center; border-bottom: 1px solid rgba(255,255,255,.26); }
.cov-variability-list article > span { color: var(--green); }
.cov-variability-list h3 { margin-bottom: 6px; font-size: 19px; }
.cov-variability-list p { margin: 0; color: #d6e9f1; font-size: 14px; line-height: 1.55; }

.cov-brief { padding: 115px 0; }
.cov-brief-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; align-items: center; }
.cov-brief-copy > p { max-width: 520px; margin-bottom: 30px; }
.cov-brief-copy .button { margin-right: 18px; }
.cov-phone { display: inline-block; padding: 9px 0; border-bottom: 1px solid #9eb0b8; color: var(--ink); font-size: 13.5px; font-weight: 800; }
.cov-brief-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.cov-brief-list li { min-height: 70px; display: grid; grid-template-columns: 48px 1fr; align-items: center; border-bottom: 1px solid var(--line); color: #334e5b; font-size: 15px; font-weight: 750; }
.cov-brief-list span { color: var(--green-dark); }
.cov-faq { background: #f3f8f9; }

/* Expertise brouillards d’huile — dossier machine / séparation */
.oil-aerosol, .oil-source, .oil-separation, .oil-signals, .oil-recycle, .oil-brief { position: relative; scroll-margin-top: 100px; }
.oil-aerosol { padding: 115px 0; }
.oil-aerosol-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 95px; align-items: start; }
.oil-aerosol-copy h2, .oil-section-head h2, .oil-recycle-copy h2, .oil-brief-copy h2 { margin-bottom: 23px; font-size: clamp(39px, 4vw, 57px); letter-spacing: -.052em; }
.oil-aerosol-copy p, .oil-recycle-copy p, .oil-brief-copy > p { color: var(--muted); font-size: 16px; line-height: 1.75; }
.oil-aerosol-list { border-top: 1px solid var(--line); }
.oil-aerosol-list article { min-height: 132px; display: grid; grid-template-columns: 52px 1fr; gap: 18px; align-items: center; border-bottom: 1px solid var(--line); }
.oil-aerosol-list article > span { width: 43px; height: 43px; display: grid; place-items: center; border-radius: 50%; background: #edf5f7; color: var(--blue); }
.oil-aerosol-list h3 { margin-bottom: 7px; font-size: 19px; }
.oil-aerosol-list p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.6; }

.oil-source { padding: 115px 0; background: #f2f7f8; }
.oil-section-head { display: grid; grid-template-columns: 1.15fr .85fr; gap: 75px; align-items: end; margin-bottom: 50px; }
.oil-section-head p { margin: 0 0 6px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.oil-media { width: 100%; margin: 0; overflow: hidden; }
.oil-media img { width: 100%; height: auto; display: block; }
.oil-source-feature { display: grid; grid-template-columns: minmax(0, 1fr) 380px; align-items: center; padding-right: 18px; }
.oil-source-feature .oil-media { min-height: 570px; }
.oil-source-feature .oil-media img { width: 100%; height: 100%; object-fit: cover; }
.oil-source-card { position: relative; z-index: 2; margin-left: -72px; padding: 34px 34px 30px; border-top: 4px solid var(--green); background: #fff; box-shadow: 0 28px 70px rgba(4,31,47,.18); }
.oil-source-card .mini-index { margin-bottom: 22px; }
.oil-source-card h3 { margin-bottom: 15px; font-size: 29px; letter-spacing: -.04em; }
.oil-source-card > p { margin: 0 0 27px; color: var(--muted); font-size: 14.5px; line-height: 1.65; }
.oil-source-card ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.oil-source-card li { min-height: 75px; display: grid; grid-template-columns: 38px 1fr; gap: 12px; align-items: center; border-bottom: 1px solid var(--line); }
.oil-source-card li > span { color: var(--green-dark); }
.oil-source-card b { display: block; margin-bottom: 3px; font-size: 14px; }
.oil-source-card small { display: block; color: var(--muted); font-size: 12.5px; line-height: 1.45; }

.oil-separation { padding: 115px 0; background: var(--ink-deep); color: #fff; }
.oil-section-head.light-head p { color: #b8ccd5; }
.oil-stage-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 34px; border-top: 1px solid rgba(255,255,255,.15); border-left: 1px solid rgba(255,255,255,.15); }
.oil-stage-grid article { min-height: 220px; padding: 28px; border-right: 1px solid rgba(255,255,255,.15); border-bottom: 1px solid rgba(255,255,255,.15); }
.oil-stage-grid article > span { display: block; margin-bottom: 40px; color: var(--green); }
.oil-stage-grid h3 { margin-bottom: 9px; font-size: 20px; }
.oil-stage-grid p { margin: 0; color: #b7cbd4; font-size: 14px; line-height: 1.62; }

.oil-signals { padding: 115px 0; }
.oil-signal-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.oil-signal-grid article { min-height: 230px; padding: 31px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.oil-signal-grid article > span { display: block; margin-bottom: 42px; color: var(--blue); }
.oil-signal-grid h3 { margin-bottom: 10px; font-size: 21px; }
.oil-signal-grid p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.65; }

.oil-recycle { padding: 110px 0; background: var(--blue); color: #fff; }
.oil-recycle-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 105px; align-items: center; }
.oil-recycle-copy p { color: #d7ebf4; }
.oil-recycle-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.27); }
.oil-recycle-list li { min-height: 68px; display: grid; grid-template-columns: 45px 1fr; align-items: center; border-bottom: 1px solid rgba(255,255,255,.27); font-size: 14.5px; font-weight: 750; }
.oil-recycle-list span { color: var(--green); }

.oil-brief { padding: 115px 0; }
.oil-brief-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; align-items: center; }
.oil-brief-copy > p { max-width: 530px; margin-bottom: 30px; }
.oil-brief-copy .button { margin-right: 18px; }
.oil-phone { display: inline-block; padding: 9px 0; border-bottom: 1px solid #9eb0b8; color: var(--ink); font-size: 13.5px; font-weight: 800; }
.oil-brief-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.oil-brief-list li { min-height: 70px; display: grid; grid-template-columns: 48px 1fr; align-items: center; border-bottom: 1px solid var(--line); color: #334e5b; font-size: 15px; font-weight: 750; }
.oil-brief-list span { color: var(--green-dark); }
.oil-faq { background: #f3f8f9; }

/* Expertise transport pneumatique */
.pneu-material, .pneu-system, .pneu-regimes, .pneu-route, .pneu-failures, .pneu-brief { position: relative; scroll-margin-top: 100px; }
.pneu-material, .pneu-system, .pneu-route, .pneu-failures { padding: 115px 0; }
.pneu-material-grid, .pneu-route-grid, .pneu-brief-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 95px; align-items: start; }
.pneu-material-copy h2, .pneu-section-head h2, .pneu-route-copy h2, .pneu-brief-copy h2 { margin-bottom: 23px; font-size: clamp(39px,4vw,57px); letter-spacing: -.052em; }
.pneu-material-copy p, .pneu-route-copy p, .pneu-brief-copy > p { color: var(--muted); font-size: 16px; line-height: 1.75; }
.pneu-material-list, .pneu-route-list { border-top: 1px solid var(--line); }
.pneu-material-list article, .pneu-route-list article { min-height: 132px; display: grid; grid-template-columns: 52px 1fr; gap: 18px; align-items: center; border-bottom: 1px solid var(--line); }
.pneu-material-list article > span, .pneu-route-list article > span { width: 43px; height: 43px; display: grid; place-items: center; border-radius: 50%; background: #edf5f7; color: var(--blue); }
.pneu-material-list h3, .pneu-route-list h3 { margin-bottom: 7px; font-size: 19px; }
.pneu-material-list p, .pneu-route-list p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.6; }
.pneu-system { background: #f1f6f8; }
.pneu-section-head { display: grid; grid-template-columns: 1.15fr .85fr; gap: 75px; align-items: end; margin-bottom: 50px; }
.pneu-section-head > * { min-width: 0; }
.pneu-section-head p { margin: 0 0 6px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.pneu-media { width: 100%; margin: 0; overflow: hidden; }
.pneu-media img { width: 100%; height: auto; display: block; }
.pneu-chain-grid { display: grid; grid-template-columns: repeat(4,1fr); margin-top: 32px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.pneu-chain-grid article { min-height: 205px; padding: 27px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pneu-chain-grid article > span { display: block; margin-bottom: 36px; color: var(--blue); }
.pneu-chain-grid h3 { margin-bottom: 8px; font-size: 20px; }
.pneu-chain-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }
.pneu-regimes { padding: 115px 0; background: var(--ink-deep); color: #fff; }
.pneu-regimes .pneu-section-head p { color: #b7cbd4; }
.pneu-regime-grid { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid rgba(255,255,255,.15); border-top: 0; }
.pneu-regime-grid article { min-height: 245px; padding: 31px; }
.pneu-regime-grid article + article { border-left: 1px solid rgba(255,255,255,.15); }
.pneu-regime-grid article > span { display: block; margin-bottom: 35px; color: var(--green); }
.pneu-regime-grid small { color: var(--green); font-size: 10px; font-weight: 900; letter-spacing: .11em; }
.pneu-regime-grid h3 { margin: 8px 0 11px; font-size: 27px; }
.pneu-regime-grid p { margin: 0; color: #b8ccd5; font-size: 14.5px; line-height: 1.65; }
.climate-architecture-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.climate-architecture-card { overflow: hidden; border: 1px solid rgba(255,255,255,.15); background: rgba(255,255,255,.035); transition: transform .3s ease, border-color .3s ease, background .3s ease; }
.climate-architecture-card:hover { transform: translateY(-5px); border-color: rgba(159,195,45,.48); background: rgba(255,255,255,.055); }
.climate-architecture-card figure { position: relative; margin: 0; overflow: hidden; aspect-ratio: 16 / 9; background: #061f2c; }
.climate-architecture-card figure::after { content: ""; position: absolute; inset: auto 0 0; height: 34%; background: linear-gradient(transparent, rgba(4,31,47,.48)); pointer-events: none; }
.climate-architecture-card img { width: 100%; height: 100%; display: block; object-fit: cover; transition: transform .55s ease; }
.climate-architecture-card:hover img { transform: scale(1.025); }
.climate-architecture-copy { padding: 30px 31px 32px; }
.climate-architecture-icon { width: 43px; height: 43px; display: grid; place-items: center; margin-bottom: 27px; border: 1px solid rgba(159,195,45,.38); border-radius: 50%; background: rgba(159,195,45,.08); color: var(--green); }
.climate-architecture-copy small { display: block; min-height: 25px; color: var(--green); font-size: 10px; font-weight: 900; line-height: 1.35; letter-spacing: .11em; }
.climate-architecture-copy h3 { margin: 9px 0 13px; font-size: clamp(24px, 2.15vw, 31px); line-height: 1.08; }
.climate-architecture-copy p { margin: 0; color: #b8ccd5; font-size: 14.5px; line-height: 1.7; }
.climate-architecture-copy ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 0; padding: 0; list-style: none; }
.climate-architecture-copy li { padding: 8px 11px; border: 1px solid rgba(255,255,255,.14); color: #e5eff3; font-size: 11px; font-weight: 800; letter-spacing: .02em; }
.climate-choice-criteria { display: grid; grid-template-columns: 1.25fr repeat(7, auto); align-items: center; gap: 0; margin-top: 24px; border: 1px solid rgba(255,255,255,.15); }
.climate-choice-criteria strong, .climate-choice-criteria span { min-height: 58px; display: flex; align-items: center; padding: 12px 16px; }
.climate-choice-criteria strong { color: var(--green); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }
.climate-choice-criteria span { border-left: 1px solid rgba(255,255,255,.11); color: #c5d6dd; font-size: 11.5px; font-weight: 700; }
.pneu-failure-grid { display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.pneu-failure-grid article { min-height: 230px; padding: 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pneu-failure-grid article > span { display: block; margin-bottom: 40px; color: var(--blue); }
.pneu-failure-grid h3 { margin-bottom: 9px; font-size: 19px; }
.pneu-failure-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }
.pneu-brief { padding: 110px 0; background: var(--blue); color: #fff; }
.pneu-brief-copy > p { max-width: 530px; margin-bottom: 30px; color: #d8ecf4; }
.pneu-brief-copy .button { margin-right: 18px; }
.pneu-phone { display: inline-block; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,.45); color: #fff; font-size: 13.5px; font-weight: 800; }
.pneu-brief-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.27); }
.pneu-brief-list li { min-height: 68px; display: grid; grid-template-columns: 48px 1fr; align-items: center; border-bottom: 1px solid rgba(255,255,255,.27); font-size: 14.5px; font-weight: 750; }
.pneu-brief-list span { color: var(--green); }
.pneu-faq { background: #f3f8f9; }

/* Expertise épuration de l’air */
.pur-pollutants, .pur-architecture, .pur-interactions, .pur-monitoring, .pur-brief { position: relative; scroll-margin-top: 100px; }
.pur-pollutants, .pur-architecture, .pur-interactions, .pur-monitoring { padding: 115px 0; }
.pur-pollutants-grid, .pur-monitoring-grid, .pur-brief-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 95px; align-items: start; }
.pur-pollutants-copy h2, .pur-section-head h2, .pur-monitoring-copy h2, .pur-brief-copy h2 { margin-bottom: 23px; font-size: clamp(39px,4vw,57px); letter-spacing: -.052em; }
.pur-pollutants-copy p, .pur-monitoring-copy > p, .pur-brief-copy > p { color: var(--muted); font-size: 16px; line-height: 1.75; }
.pur-pollutant-list { border-top: 1px solid var(--line); }
.pur-pollutant-list article { min-height: 132px; display: grid; grid-template-columns: 52px 1fr; gap: 18px; align-items: center; border-bottom: 1px solid var(--line); }
.pur-pollutant-list article > span { width: 43px; height: 43px; display: grid; place-items: center; border-radius: 50%; background: #edf5f7; color: var(--blue); }
.pur-pollutant-list h3 { margin-bottom: 7px; font-size: 19px; }
.pur-pollutant-list p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.6; }
.pur-architecture { background: #f1f6f8; }
.pur-section-head { display: grid; grid-template-columns: 1.15fr .85fr; gap: 75px; align-items: end; margin-bottom: 50px; }
.pur-section-head p { margin: 0 0 6px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.pur-media { width: 100%; margin: 0; overflow: hidden; }
.pur-media img { width: 100%; height: auto; display: block; }
.pur-stage-grid { display: grid; grid-template-columns: repeat(5,1fr); margin-top: 31px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.pur-stage-grid article { min-height: 210px; padding: 25px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pur-stage-grid article > span { display: block; margin-bottom: 37px; color: var(--blue); }
.pur-stage-grid h3 { margin-bottom: 8px; font-size: 19px; }
.pur-stage-grid p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.58; }
.pur-interactions { background: var(--ink-deep); color: #fff; }
.pur-interactions .pur-section-head p { color: #b8ccd5; }
.pur-interaction-grid { display: grid; grid-template-columns: repeat(2,1fr); border-top: 1px solid rgba(255,255,255,.15); border-left: 1px solid rgba(255,255,255,.15); }
.pur-interaction-grid article { min-height: 225px; padding: 31px; border-right: 1px solid rgba(255,255,255,.15); border-bottom: 1px solid rgba(255,255,255,.15); }
.pur-interaction-grid article > span { display: block; margin-bottom: 38px; color: var(--green); }
.pur-interaction-grid h3 { margin-bottom: 9px; font-size: 21px; }
.pur-interaction-grid p { margin: 0; color: #b8ccd5; font-size: 14.5px; line-height: 1.65; }
.pur-monitoring-grid { grid-template-columns: 1.18fr .82fr; align-items: center; }
.pur-monitoring .pur-media img { width: 100%; height: auto; object-fit: initial; }
.pur-monitoring-feature .pur-media { min-height: 590px; }
.pur-monitoring-feature .pur-media img { height: 100%; object-fit: cover; }
.pur-monitoring-card { padding-top: 31px; padding-bottom: 27px; }
.pur-monitoring-card h3 { font-size: 27px; }
.pur-monitoring-card > p { margin-bottom: 20px; }
.pur-monitoring-card li { min-height: 68px; }
.pur-monitoring-card small { line-height: 1.35; }
.pur-monitoring-list { margin-top: 32px; border-top: 1px solid var(--line); }
.pur-monitoring-list article { min-height: 86px; display: grid; grid-template-columns: 42px 1fr; gap: 13px; align-items: center; border-bottom: 1px solid var(--line); }
.pur-monitoring-list article > span { color: var(--green-dark); }
.pur-monitoring-list h3 { margin-bottom: 4px; font-size: 15px; }
.pur-monitoring-list p { margin: 0; color: var(--muted); font-size: 12.8px; line-height: 1.5; }
.pur-brief { padding: 110px 0; background: var(--blue); color: #fff; }
.pur-brief-copy > p { max-width: 530px; margin-bottom: 30px; color: #d8edf5; }
.pur-brief-copy .button { margin-right: 18px; }
.pur-phone { display: inline-block; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,.45); color: #fff; font-size: 13.5px; font-weight: 800; }
.pur-brief-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.27); }
.pur-brief-list li { min-height: 68px; display: grid; grid-template-columns: 48px 1fr; align-items: center; border-bottom: 1px solid rgba(255,255,255,.27); font-size: 14.5px; font-weight: 750; }
.pur-brief-list span { color: var(--green); }
.pur-faq { background: #f3f8f9; }

/* Fond premium commun aux séquences techniques mises en avant */
.dust-brief,
.vent-measurements,
.cov-variability,
.oil-recycle,
.pneu-brief,
.pur-brief {
  background-color: #061f2e;
  background-image:
    radial-gradient(ellipse at 88% 12%, rgba(0,120,188,.3), transparent 43%),
    radial-gradient(ellipse at 8% 105%, rgba(159,195,45,.08), transparent 34%),
    linear-gradient(rgba(255,255,255,.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.026) 1px, transparent 1px),
    linear-gradient(135deg, #041b29 0%, #072b3f 58%, #08364d 100%);
  background-size: auto, auto, 52px 52px, 52px 52px, auto;
  box-shadow: inset 0 1px rgba(255,255,255,.06), inset 0 -1px rgba(255,255,255,.06);
}

.dust-brief .section-kicker,
.vent-measurements .section-kicker,
.cov-variability .section-kicker,
.oil-recycle .section-kicker,
.pneu-brief .section-kicker,
.pur-brief .section-kicker { color: var(--green); }

@media (max-width: 1000px) {
  .exp-hero { grid-template-columns: 1fr; }
  .exp-hero::before { inset: 0; }
  .exp-hero-copy { min-height: 610px; justify-content: flex-start; padding: 64px max(24px, calc((100vw - var(--container)) / 2)); }
  .exp-hero-inner { width: min(100%, 720px); }
  .exp-hero-media { min-height: 500px; margin: 0 24px 24px; }
  .exp-intro-grid, .criteria-grid { gap: 60px; }
  .tech-card { min-height: 300px; }
  .dust-diagnostic-grid, .dust-process-grid, .dust-faq-grid { gap: 60px; }
  .dust-choice-head, .dust-signals-head { gap: 55px; }
  .vent-diagnostic-grid, .vent-cutaway-grid, .vent-measurements-grid, .vent-brief-grid { gap: 55px; }
  .cov-identity-grid, .cov-variability-grid, .cov-brief-grid { gap: 55px; }
  .oil-aerosol-grid, .oil-recycle-grid, .oil-brief-grid { gap: 55px; }
  .oil-stage-grid { grid-template-columns: repeat(2, 1fr); }
  .oil-source-feature { grid-template-columns: minmax(0, 1fr) 340px; }
  .oil-source-card { margin-left: -45px; padding: 30px; }
  .pneu-material-grid, .pneu-route-grid, .pneu-brief-grid { gap: 55px; }
  .pneu-chain-grid, .pneu-failure-grid { grid-template-columns: repeat(2,1fr); }
  .pur-pollutants-grid, .pur-monitoring-grid, .pur-brief-grid { gap: 55px; }
  .pur-stage-grid { grid-template-columns: repeat(3,1fr); }
  .cov-treatment { grid-template-columns: 56px .72fr 1fr; }
  .cov-treatment > div:last-child { grid-column: 2 / -1; padding-top: 18px; border-top: 1px solid var(--line); }
  .vent-diagnostic-copy { position: static; }
  .vent-balance-line { grid-template-columns: repeat(2, 1fr); }
  .vent-cutaway-grid { grid-template-columns: 1fr; }
  .vent-cutaway-copy { max-width: 760px; }
  .vent-equation { flex-wrap: wrap; }
  .dust-tech { grid-template-columns: 40px .75fr 1fr 1fr; }
  .dust-tech-index { grid-column: 1; grid-row: 1; }
  .dust-tech-title { grid-column: 2; grid-row: 1 / span 2; }
  .dust-tech-use { grid-column: 3; grid-row: 1; }
  .dust-tech-role { grid-column: 4; grid-row: 1; }
  .dust-tech-watch { grid-column: 3 / 5; grid-row: 2; padding: 18px 0 0; border-top: 1px solid rgba(255,255,255,.1); border-left: 0; }
  .dust-brief-grid { gap: 60px; }
}

@media (max-width: 850px) {
  .exp-intro, .criteria-section { padding: 85px 0; }
  .system-section, .tech-section, .method-section { padding: 85px 0; }
  .exp-intro-grid, .criteria-grid { grid-template-columns: 1fr; gap: 38px; }
  .exp-sticky-title, .application-panel { position: static; }
  .exp-section-head { grid-template-columns: 1fr; gap: 20px; }
  .flow-line, .method-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-line::before { display: none; }
  .flow-step { border-bottom: 1px solid var(--line); }
  .tech-grid { grid-template-columns: 1fr; }
  .tech-card { min-height: 260px; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .project-cta-grid { grid-template-columns: 1fr; }
  .project-cta-actions { align-items: flex-start; }
  .airpro-service { padding: 85px 0; }
  .airpro-service-grid { grid-template-columns: 1fr; gap: 50px; }
  .airpro-service-media { min-height: 440px; }
  .airpro-service-copy { max-width: 720px; }
  .dust-diagnostic, .dust-choice, .dust-process, .dust-signals, .dust-faq { padding: 85px 0; }
  .dust-diagnostic-grid, .dust-process-grid, .dust-faq-grid, .dust-brief-grid { grid-template-columns: 1fr; gap: 45px; }
  .dust-diagnostic-copy, .dust-process-intro, .dust-faq-heading { position: static; }
  .dust-choice-head, .dust-signals-head { grid-template-columns: 1fr; gap: 20px; }
  .dust-tech { grid-template-columns: 40px 1fr; gap: 18px; }
  .dust-tech-index { grid-column: 1; grid-row: 1; }
  .dust-tech-title { grid-column: 2; grid-row: 1; }
  .dust-tech-use, .dust-tech-role, .dust-tech-watch { grid-column: 2; grid-row: auto; padding: 0; border: 0; }
  .dust-tech-watch { padding-top: 16px; border-top: 1px solid rgba(255,255,255,.1); }
  .dust-brief { padding: 85px 0; }
  .dust-material-visual { width: 95%; }
  .dust-chain-visual { grid-template-columns: 1fr; }
  .dust-chain-visual img { min-height: 0; }
  .dust-chain-visual figcaption { display: grid; grid-template-columns: 1fr 1fr; border-top: 4px solid var(--green); border-left: 0; }
  .dust-chain-visual figcaption strong { grid-column: 1 / -1; margin: 0 0 4px; }
  .vent-diagnostic-grid, .vent-section-head, .vent-measurements-grid, .vent-brief-grid { grid-template-columns: 1fr; }
  .vent-diagnostic { padding-top: 80px; }
  .vent-airflow-stage { margin-top: 18px; }
  .vent-balance, .vent-strategies, .vent-measurements, .vent-brief { padding: 80px 0; }
  .vent-cutaway { padding: 80px 0 0; }
  .vent-section-head { grid-template-columns: 1fr; gap: 22px; margin-bottom: 42px; }
  .vent-strategy-grid { grid-template-columns: 1fr; }
  .vent-strategy { min-height: 325px; }
  .vent-measurements-grid, .vent-brief-grid { gap: 45px; }
  .vent-cutaway-display::after { display: none; }
  .vent-cutaway-overlay { position: relative; left: auto; bottom: auto; width: 100%; padding: 0; transform: none; }
  .vent-cutaway-side { grid-template-columns: 1fr; }
  .vent-cutaway-label { padding: 25px 28px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.16); }
  .cov-identity, .cov-capture, .cov-choice, .cov-train, .cov-variability, .cov-brief { padding: 80px 0; }
  .cov-identity-grid, .cov-section-head, .cov-variability-grid, .cov-brief-grid { grid-template-columns: 1fr; gap: 42px; }
  .cov-section-head { gap: 20px; }
  .cov-treatment { grid-template-columns: 52px 1fr; gap: 20px; }
  .cov-treatment > div:nth-child(n+3) { grid-column: 2; padding-top: 15px; border-top: 1px solid var(--line); }
  .oil-aerosol, .oil-source, .oil-separation, .oil-signals, .oil-recycle, .oil-brief { padding: 80px 0; }
  .oil-aerosol-grid, .oil-section-head, .oil-recycle-grid, .oil-brief-grid { grid-template-columns: 1fr; gap: 42px; }
  .oil-section-head { gap: 20px; }
  .oil-source-feature { grid-template-columns: 1fr; padding-right: 0; }
  .oil-source-feature .oil-media { min-height: 0; }
  .oil-source-feature .oil-media img { height: auto; object-fit: initial; }
  .oil-source-card { width: calc(100% - 48px); margin: -42px auto 0; }
  .pneu-material, .pneu-system, .pneu-regimes, .pneu-route, .pneu-failures, .pneu-brief { padding: 80px 0; }
  .pneu-material-grid, .pneu-route-grid, .pneu-brief-grid, .pneu-section-head { grid-template-columns: 1fr; gap: 42px; }
  .pneu-section-head { gap: 20px; }
  .climate-architecture-grid { grid-template-columns: 1fr; }
  .climate-choice-criteria { grid-template-columns: repeat(4, 1fr); }
  .climate-choice-criteria strong { grid-column: 1 / -1; border-bottom: 1px solid rgba(255,255,255,.11); }
  .climate-choice-criteria span:nth-of-type(4n + 1) { border-left: 0; }
  .pur-pollutants, .pur-architecture, .pur-interactions, .pur-monitoring, .pur-brief { padding: 80px 0; }
  .pur-pollutants-grid, .pur-monitoring-grid, .pur-brief-grid, .pur-section-head { grid-template-columns: 1fr; gap: 42px; }
  .pur-section-head { gap: 20px; }
  .pur-monitoring .pur-media { min-height: 0; }
  .pur-monitoring .pur-media img { height: auto; object-fit: initial; }
  .pur-monitoring-feature .pur-media { min-height: 0; }
  .pur-monitoring-feature .pur-media img { height: auto; object-fit: initial; }
}

@media (max-width: 580px) {
  .exp-hero { min-height: auto; }
  .exp-hero::after { width: 64px; height: 4px; }
  .exp-hero-copy { min-height: auto; padding: 42px 24px 54px; }
  .breadcrumbs { margin-bottom: 42px; }
  .exp-label { gap: 8px; font-size: 9.5px; letter-spacing: .11em; }
  .exp-label::before { width: 24px; }
  .exp-hero h1 { font-size: clamp(40px, 12vw, 50px); }
  .ventilation-page .exp-hero h1 { font-size: clamp(35px, 10vw, 40px); }
  .exp-lead { font-size: 16px; }
  .exp-actions { align-items: flex-start; flex-direction: column; gap: 14px; }
  .exp-capabilities { margin-top: 34px; }
  .exp-hero-media { min-height: 0; margin: 0 14px 14px; display: flex; flex-direction: column; }
  .exp-hero-media img { height: 390px; flex: 0 0 390px; }
  .exp-hero-media::before { inset: 0 0 auto; height: 390px; }
  .exp-signal { position: relative; right: auto; bottom: auto; width: auto; margin: 0; padding: 17px 19px 18px; }
  .exp-signal::before { margin-bottom: 8px; }
  .signal-value { margin-bottom: 7px; font-size: 31px; }
  .signal-copy { max-width: none; font-size: 11.5px; }
  .outcome-grid { grid-template-columns: 1fr; }
  .outcome { min-height: auto; padding: 20px 0; }
  .outcome + .outcome { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .outcome span { margin-bottom: 8px; }
  .flow-line, .method-grid { grid-template-columns: 1fr; }
  .flow-step { min-height: 175px; }
  .method-step + .method-step { border-left: 0; border-top: 0; }
  .related-head { align-items: flex-start; flex-direction: column; }
  .related-grid { grid-template-columns: 1fr; }
  .related-card { min-height: 240px; }
  .dust-diagnostic, .dust-choice, .dust-process, .dust-signals, .dust-faq { padding: 70px 0; }
  .dust-diagnostic-copy h2, .dust-choice-head h2, .dust-process-intro h2, .dust-signals-head h2, .dust-brief-copy h2, .dust-faq-heading h2 { font-size: 38px; }
  .dust-profile-item { grid-template-columns: 48px 1fr; gap: 13px; }
  .dust-profile-item > span { width: 38px; height: 38px; }
  .dust-tech { padding: 25px 0; }
  .dust-tech:hover { padding-left: 0; }
  .dust-process-line::before { left: 21px; }
  .dust-process-step { grid-template-columns: 44px 1fr; gap: 18px; padding-bottom: 38px; }
  .dust-process-number { width: 44px; height: 44px; }
  .dust-process-step h3 { margin-top: 0; font-size: 20px; }
  .dust-signal-grid { grid-template-columns: 1fr; }
  .dust-symptom { min-height: 205px; padding: 27px; }
  .dust-symptom > span { margin-bottom: 38px; }
  .dust-brief { padding: 72px 0; }
  .dust-brief-copy .button { margin: 0 0 16px; }
  .dust-phone { display: block; width: fit-content; }
  .dust-faq-item summary { grid-template-columns: 30px 1fr; min-height: 92px; padding-right: 34px; font-size: 15.5px; }
  .dust-faq-item > div { padding: 0 34px 24px 42px; }
  .airpro-service { padding: 70px 0; }
  .airpro-service-grid { gap: 38px; }
  .airpro-service-media { min-height: 340px; }
  .airpro-service-media figcaption { left: 18px; right: 18px; bottom: 18px; }
  .airpro-service-copy h2 { font-size: 37px; }
  .airpro-service-copy .airpro-service-lead { font-size: 16px; }
  .airpro-service-copy ul { grid-template-columns: 1fr; }
  .airpro-service-copy li { min-height: 0; padding: 15px 10px 15px 20px; }
  .airpro-service-copy li + li { border-top: 1px solid rgba(7,37,54,.14); border-left: 0; }
  .airpro-service-copy li::before { top: 21px; }
  .dust-visual { margin-top: 8px; }
  .vent-diagnostic-copy h2, .vent-section-head h2, .vent-cutaway-copy h2, .vent-measurements-copy h2, .vent-brief-copy h2 { font-size: 38px; }
  .vent-diagnostic-item { grid-template-columns: 48px 1fr; gap: 14px; padding: 18px 0; }
  .vent-diagnostic-item > span { width: 40px; height: 40px; }
  .vent-airflow-stage { width: calc(100% - 28px); }
  .vent-balance-line { grid-template-columns: 1fr; }
  .vent-balance-step { min-height: 215px; }
  .vent-balance-step > span { margin-bottom: 35px; }
  .vent-equation { align-items: flex-start; flex-direction: column; gap: 9px; }
  .vent-equation i, .vent-equation b { display: none; }
  .vent-equation span, .vent-equation strong { width: 100%; padding: 7px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
  .vent-cutaway-copy { margin-bottom: 34px; }
  .vent-cutaway-points { grid-template-columns: 1fr; }
  .vent-cutaway-points li { min-height: 88px; padding: 18px 23px; }
  .vent-cutaway-points li + li { border-top: 1px solid rgba(255,255,255,.16); border-left: 0; }
  .vent-strategy { padding: 28px; }
  .vent-strategy-icon { margin-bottom: 38px; }
  .vent-brief-copy .button { margin: 0 0 15px; }
  .vent-phone { display: block; width: fit-content; }
  .cov-identity-copy h2, .cov-section-head h2, .cov-train-heading h2, .cov-variability-copy h2, .cov-brief-copy h2 { font-size: 38px; }
  .cov-identity-item { grid-template-columns: 46px 1fr; gap: 13px; padding: 17px 0; }
  .cov-identity-item > span { width: 38px; height: 38px; }
  .cov-capture-grid { grid-template-columns: 1fr; }
  .cov-capture-grid article { min-height: 185px; }
  .cov-treatment { grid-template-columns: 42px 1fr; padding: 24px 0; }
  .cov-treatment-icon { width: 40px; height: 40px; }
  .cov-variability-list article { grid-template-columns: 44px 1fr; padding: 15px 0; }
  .cov-brief-copy .button { margin: 0 0 15px; }
  .cov-phone { display: block; width: fit-content; }
  .oil-aerosol-copy h2, .oil-section-head h2, .oil-recycle-copy h2, .oil-brief-copy h2 { font-size: 38px; }
  .oil-aerosol-list article { grid-template-columns: 46px 1fr; gap: 13px; padding: 16px 0; }
  .oil-aerosol-list article > span { width: 38px; height: 38px; }
  .oil-source-card { width: calc(100% - 28px); margin-top: -24px; padding: 26px 23px; }
  .oil-source-card h3 { font-size: 25px; }
  .oil-stage-grid, .oil-signal-grid { grid-template-columns: 1fr; }
  .oil-stage-grid article { min-height: 190px; }
  .oil-signal-grid article { min-height: 205px; }
  .oil-recycle-list li { padding: 12px 0; }
  .oil-brief-copy .button { margin: 0 0 15px; }
  .oil-phone { display: block; width: fit-content; }
  .pneu-material-copy h2, .pneu-section-head h2, .pneu-route-copy h2, .pneu-brief-copy h2 { font-size: 38px; }
  .pneu-material-list article, .pneu-route-list article { grid-template-columns: 46px 1fr; gap: 13px; padding: 16px 0; }
  .pneu-material-list article > span, .pneu-route-list article > span { width: 38px; height: 38px; }
  .pneu-chain-grid, .pneu-failure-grid, .pneu-regime-grid { grid-template-columns: 1fr; }
  .pneu-regime-grid article + article { border-top: 1px solid rgba(255,255,255,.15); border-left: 0; }
  .pneu-chain-grid article, .pneu-failure-grid article { min-height: 190px; }
  .climate-architecture-copy { padding: 25px 23px 27px; }
  .climate-architecture-copy small { min-height: 0; }
  .climate-choice-criteria { grid-template-columns: 1fr 1fr; }
  .climate-choice-criteria span { min-height: 50px; padding: 10px 12px; }
  .climate-choice-criteria span:nth-of-type(4n + 1) { border-left: 1px solid rgba(255,255,255,.11); }
  .climate-choice-criteria span:nth-of-type(odd) { border-left: 0; }
  .pneu-brief-copy .button { margin: 0 0 15px; }
  .pneu-phone { display: block; width: fit-content; }
  .pur-pollutants-copy h2, .pur-section-head h2, .pur-monitoring-copy h2, .pur-brief-copy h2 { font-size: 38px; }
  .pur-pollutant-list article { grid-template-columns: 46px 1fr; gap: 13px; padding: 16px 0; }
  .pur-pollutant-list article > span { width: 38px; height: 38px; }
  .pur-stage-grid, .pur-interaction-grid { grid-template-columns: 1fr; }
  .pur-stage-grid article, .pur-interaction-grid article { min-height: 190px; }
  .pur-brief-copy .button { margin: 0 0 15px; }
  .pur-phone { display: block; width: fit-content; }
  .dust-material-visual { width: 100%; margin-top: 24px; padding: 0; }
  .dust-material-visual img { aspect-ratio: 1.35 / 1; box-shadow: none; }
  .dust-material-visual figcaption { position: relative; left: auto; bottom: auto; width: calc(100% - 20px); min-height: auto; margin: -22px 0 0 20px; padding: 19px 20px; }
  .dust-chain-visual { margin-bottom: 20px; }
  .dust-chain-visual img { aspect-ratio: auto; }
  .dust-chain-visual { padding: 8px; }
  .dust-chain-visual figcaption { gap: 12px; padding: 22px 18px; }
  .dust-chain-visual figcaption span { font-size: 11px; }
}