:root {
  --ink: #0b1720;
  --muted: #5a6b77;
  --line: #d5e0e8;
  --paper: #f4f8fa;
  --white: #ffffff;
  --blue: #0877c9;
  --blue-dark: #064c82;
  --aqua: #2bb8c7;
  --graphite: #152531;
  --gold: #c8952e;
  --green: #1f7a61;
  --shadow: 0 18px 48px rgba(10, 35, 52, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

main,
section,
header,
footer,
div,
article,
nav {
  min-width: 0;
}

h1,
h2,
h3,
p,
a,
li,
label,
strong,
dd,
th,
td {
  overflow-wrap: break-word;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  font-size: 5.1rem;
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: 3.45rem;
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.35rem;
  line-height: 1.2;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow.light {
  color: #8de2ea;
}

.light-text {
  color: rgba(255, 255, 255, 0.84) !important;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  min-height: 72px;
  padding: 0 5vw;
  background: rgba(247, 250, 252, 0.94);
  border-bottom: 1px solid rgba(213, 224, 232, 0.94);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 850;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--white);
  background: var(--blue-dark);
  border-radius: 8px;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 30px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 750;
}

.nav a,
.header-action,
.primary-button,
.inverse-button,
.text-link,
.source-link {
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--blue);
}

.nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 8px;
}

.header-action,
.primary-button,
.inverse-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border-radius: 8px;
  font-weight: 850;
}

.header-action {
  color: var(--white);
  background: var(--ink);
}

.header-action:hover {
  background: var(--blue-dark);
}

.home-hero {
  display: grid;
  min-height: calc(100vh - 72px);
  align-items: end;
  padding: 88px 5vw 56px;
  color: var(--white);
  background-color: #10212c;
  background-image: linear-gradient(rgba(4, 16, 24, 0.5), rgba(4, 16, 24, 0.76)), url("assets/ciitca-showroom-evening.jpg");
  background-position: center;
  background-size: cover;
}

.home-hero-inner {
  width: min(820px, 100%);
}

.home-hero h1 {
  max-width: 800px;
}

.hero-text {
  max-width: 690px;
  color: var(--muted);
  font-size: 1.24rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 34px 0;
}

.primary-button {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 10px 26px rgba(8, 119, 201, 0.25);
}

.primary-button:hover {
  background: #0665ad;
}

.inverse-button {
  color: var(--white);
  background: rgba(4, 18, 28, 0.38);
  border: 1px solid rgba(255, 255, 255, 0.58);
}

.inverse-button:hover {
  background: rgba(255, 255, 255, 0.14);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  width: min(640px, 100%);
  margin: 0;
}

.hero-stats div {
  padding: 15px 17px;
  background: rgba(6, 24, 35, 0.54);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 8px;
}

.hero-stats dt {
  font-size: 1.35rem;
  font-weight: 900;
}

.hero-stats dd {
  margin: 2px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.82rem;
}

.market-strip {
  padding: 18px 5vw;
  color: rgba(255, 255, 255, 0.82);
  background: var(--graphite);
}

.market-strip p {
  width: min(1200px, 100%);
  margin: 0 auto;
  font-weight: 650;
}

.section {
  padding: 88px 5vw;
}

.section-heading {
  width: min(880px, 100%);
  margin-bottom: 34px;
}

.section-heading > p:not(.eyebrow),
.page-hero > p:not(.eyebrow) {
  color: var(--muted);
  font-size: 1.1rem;
}

.intro,
.process-section,
.regulation-section,
.contact-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(360px, 1.1fr);
  gap: 62px;
  align-items: start;
}

.intro {
  background: var(--white);
}

.prose-stack p,
.process-section > div p,
.regulation-copy,
.contact-aside > p {
  color: var(--muted);
  font-size: 1.08rem;
}

.text-link,
.source-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--blue-dark);
  font-weight: 850;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.text-link:hover,
.source-link:hover {
  color: var(--blue);
}

.models-preview,
.comparison-section,
.architecture-section,
.operations-grid-section {
  background: var(--paper);
}

.model-lines {
  border-top: 1px solid var(--line);
}

.model-line {
  display: grid;
  grid-template-columns: minmax(180px, 0.7fr) minmax(280px, 1.4fr) minmax(130px, 0.45fr);
  gap: 24px;
  align-items: center;
  padding: 25px 0;
  border-bottom: 1px solid var(--line);
}

.model-line:hover {
  color: var(--blue-dark);
  background: rgba(255, 255, 255, 0.48);
}

.model-line > span:first-child {
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.model-line small {
  color: var(--gold);
  font-weight: 900;
}

.model-line strong {
  font-size: 1.35rem;
}

.line-purpose {
  color: var(--muted);
}

.line-price {
  text-align: right;
  font-size: 1.5rem;
  font-weight: 900;
}

.capability-band,
.benchmark-section {
  background: var(--white);
}

.feature-grid,
.operations-grid,
.benchmark-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 26px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.feature-grid article,
.operations-grid article,
.benchmark-grid article {
  min-height: 230px;
  padding: 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature-grid article > span {
  display: block;
  margin-bottom: 38px;
  color: var(--gold);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.feature-grid p,
.operations-grid p,
.benchmark-grid p {
  color: var(--muted);
}

.steps,
.timeline,
.detail-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 7px 16px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.steps span {
  grid-row: span 2;
  color: var(--blue);
  font-weight: 900;
}

.steps p {
  margin: 0;
  color: var(--muted);
}

.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 38px;
  padding: 64px 5vw;
  color: var(--white);
  background: #0d2636;
}

.cta-band h2 {
  max-width: 850px;
  margin: 0;
}

.cta-band .primary-button {
  flex: 0 0 auto;
}

.page-hero {
  padding: 94px 5vw 72px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  max-width: 1020px;
}

.page-hero > p:not(.eyebrow) {
  max-width: 800px;
  margin-bottom: 0;
}

.technical-hero,
.ownership-hero,
.contact-hero {
  background-color: #eef4f7;
}

.model-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.model-detail {
  display: flex;
  min-height: 640px;
  flex-direction: column;
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.model-detail.featured {
  border-color: rgba(8, 119, 201, 0.5);
  box-shadow: var(--shadow);
}

.model-kicker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
  color: var(--blue-dark);
  font-weight: 900;
}

.model-media {
  flex: 0 0 auto;
  margin: 0 0 24px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #e8eef2;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.model-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.basic-media img,
.advanced-media img,
.luxury-media img {
  object-position: center;
}

.model-kicker strong {
  font-size: 1.65rem;
}

.model-detail h2 {
  font-size: 2.35rem;
}

.model-detail > p,
.check-list {
  color: var(--muted);
}

.model-detail h3 {
  margin-top: 22px;
  font-size: 1rem;
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 8px 0 28px;
  padding-left: 20px;
}

.model-detail .text-link {
  margin-top: auto;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--white);
}

table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

th,
td {
  padding: 18px;
  text-align: left;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

thead th {
  color: var(--white);
  background: var(--graphite);
}

tbody th {
  width: 26%;
  color: var(--blue-dark);
}

.fine-print,
.research-date,
.form-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.model-gallery,
.technical-visuals,
.integrated-systems {
  background: var(--white);
}

.integrated-systems {
  border-top: 1px solid var(--line);
}

.systems-visual {
  margin: 0;
  overflow: hidden;
  background: #eef3f6;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.systems-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.systems-visual figcaption {
  display: grid;
  gap: 4px;
  padding: 18px 20px;
  background: var(--white);
  border-top: 1px solid var(--line);
}

.systems-visual figcaption span {
  color: var(--muted);
  font-size: 0.9rem;
}

.systems-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 26px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.systems-feature-grid article {
  min-height: 230px;
  padding: 25px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.systems-feature-grid article > span {
  display: block;
  margin-bottom: 26px;
  color: var(--gold);
  font-size: 0.8rem;
  font-weight: 900;
}

.systems-feature-grid p,
.layout-notes {
  color: var(--muted);
}

.systems-layout-row {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 34px;
  align-items: center;
  margin-top: 38px;
}

.layout-notes h3 {
  color: var(--ink);
  font-size: 2rem;
}

.layout-notes .check-list {
  margin-bottom: 0;
}

.anatomy-section {
  color: var(--white);
  background: var(--ink);
}

.anatomy-section .section-heading p:not(.eyebrow),
.anatomy-section .fine-print {
  color: #b9c9d3;
}

.anatomy-section .eyebrow {
  color: var(--aqua);
}

.anatomy-board {
  display: grid;
  grid-template-areas: "left figure right";
  grid-template-columns: minmax(210px, 0.72fr) minmax(480px, 1.8fr) minmax(210px, 0.72fr);
  gap: 24px;
  align-items: center;
}

.anatomy-notes-left {
  grid-area: left;
}

.anatomy-notes-right {
  grid-area: right;
}

.anatomy-notes {
  display: grid;
  gap: 18px;
}

.anatomy-note {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 13px;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.anatomy-note::after,
.anatomy-note::before {
  position: absolute;
  top: 50%;
  width: 24px;
  height: 1px;
  background: var(--aqua);
  content: "";
}

.anatomy-notes-left .anatomy-note::after {
  right: -24px;
}

.anatomy-notes-right .anatomy-note::before {
  left: -24px;
}

.anatomy-notes-left .anatomy-note::before,
.anatomy-notes-right .anatomy-note::after {
  display: none;
}

.anatomy-note > span,
.anatomy-pin {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--ink);
  background: var(--aqua);
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 900;
}

.anatomy-note h3 {
  margin-bottom: 6px;
  color: var(--white);
  font-size: 1rem;
}

.anatomy-note p {
  margin: 0;
  color: #b9c9d3;
  font-size: 0.84rem;
}

.anatomy-figure {
  grid-area: figure;
  margin: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
}

.anatomy-photo {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.anatomy-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.anatomy-pin {
  position: absolute;
  z-index: 1;
  border: 3px solid var(--white);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
  transform: translate(-50%, -50%);
}

.pin-01 { left: 9%; top: 48%; }
.pin-02 { left: 73%; top: 52%; }
.pin-03 { left: 54%; top: 24%; }
.pin-04 { left: 54%; top: 42%; }
.pin-05 { left: 39%; top: 56%; }
.pin-06 { left: 54%; top: 76%; }

.anatomy-figure figcaption {
  display: grid;
  gap: 3px;
  padding: 16px 18px;
  color: var(--ink);
}

.anatomy-figure figcaption span {
  color: var(--muted);
  font-size: 0.84rem;
}

.anatomy-specs {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin-top: 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.anatomy-specs article {
  display: grid;
  gap: 6px;
  min-height: 108px;
  align-content: center;
  padding: 16px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.anatomy-specs article:last-child {
  border-right: 0;
}

.anatomy-specs span {
  color: #9fb2be;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.anatomy-specs strong {
  color: var(--white);
  font-size: 1rem;
}

.model-gallery {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.7fr);
  gap: 22px;
}

.model-gallery .section-heading {
  grid-column: 1 / -1;
}

.gallery-main,
.gallery-secondary,
.technical-photo-grid figure {
  margin: 0;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.gallery-main img,
.gallery-secondary img,
.technical-photo-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-main img {
  aspect-ratio: 4 / 3;
}

.gallery-secondary img {
  aspect-ratio: 4 / 3;
}

.gallery-main figcaption,
.gallery-secondary figcaption,
.technical-photo-grid figcaption {
  display: grid;
  gap: 4px;
  padding: 18px 20px;
}

.gallery-main figcaption span,
.gallery-secondary figcaption span,
.technical-photo-grid figcaption span {
  color: var(--muted);
  font-size: 0.9rem;
}

.technical-photo-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 22px;
}

.technical-photo-grid figure {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
}

.technical-photo-grid img {
  aspect-ratio: 4 / 3;
}

.cockpit-photo img {
  object-position: 58% center;
}

.architecture-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.architecture-grid article {
  padding: 30px;
  background: var(--white);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.system-number {
  display: block;
  margin-bottom: 28px;
  color: var(--gold);
  font-weight: 900;
}

.architecture-grid article > p {
  color: var(--muted);
}

.architecture-grid dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 24px 0 0;
}

.architecture-grid dl div {
  padding-top: 12px;
  border-top: 2px solid var(--line);
}

.architecture-grid dt {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
}

.architecture-grid dd {
  margin: 5px 0 0;
  font-size: 0.9rem;
  font-weight: 750;
}

.safety-stack {
  color: var(--white);
  background: #102d3f;
}

.safety-stack > div:first-child {
  max-width: 850px;
}

.safety-layers {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.safety-layers article {
  min-height: 210px;
  padding: 25px;
  border-right: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.safety-layers strong {
  color: #8de2ea;
  font-size: 1.2rem;
}

.safety-layers p,
.inverse-note {
  color: rgba(255, 255, 255, 0.72);
}

.benchmark-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.benchmark-grid article {
  display: flex;
  min-height: 320px;
  flex-direction: column;
}

.benchmark-grid .source-link {
  margin-top: auto;
}

.timeline {
  max-width: 980px;
}

.timeline li {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 22px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.timeline li > span {
  color: var(--gold);
  font-size: 1.2rem;
  font-weight: 900;
}

.timeline p {
  margin: 0;
  color: var(--muted);
}

.operations-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.source-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 22px 0;
}

.contact-layout {
  background: var(--paper);
}

.detail-list li {
  display: grid;
  gap: 4px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.detail-list span {
  color: var(--muted);
}

.direct-email {
  margin-top: 28px;
}

.direct-email a {
  color: var(--blue-dark);
  font-weight: 850;
}

.contact-form {
  display: grid;
  gap: 17px;
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: #314450;
  font-weight: 800;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  min-height: 46px;
  padding: 12px 13px;
  color: var(--ink);
  background: #fbfdfe;
  border: 1px solid #c5d3dd;
  border-radius: 8px;
  font: inherit;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--blue);
  outline: 3px solid rgba(43, 184, 199, 0.22);
}

.contact-form .consent {
  display: grid;
  grid-template-columns: 20px 1fr;
  align-items: start;
  gap: 10px;
  font-size: 0.86rem;
  font-weight: 650;
}

.consent input {
  width: 18px;
  min-height: 18px;
  margin: 2px 0 0;
}

.contact-form button {
  min-height: 48px;
  cursor: pointer;
  color: var(--white);
  background: var(--blue);
  border: 0;
  border-radius: 8px;
  font: inherit;
  font-weight: 850;
}

.footer {
  display: grid;
  grid-template-columns: 0.8fr 1fr 1.2fr;
  gap: 36px;
  padding: 38px 5vw;
  color: rgba(255, 255, 255, 0.72);
  background: #07131b;
}

.footer strong {
  color: var(--white);
}

.footer p {
  margin: 5px 0 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 10px 22px;
}

.footer-links a:hover {
  color: var(--white);
}

.footer-note {
  font-size: 0.8rem;
}

@media (max-width: 1180px) {
  h1 {
    font-size: 4.3rem;
  }

  h2 {
    font-size: 2.9rem;
  }

  .model-detail-grid {
    grid-template-columns: 1fr;
  }

  .model-detail {
    min-height: 0;
  }

  .feature-grid,
  .safety-layers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .benchmark-grid,
  .operations-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .anatomy-board {
    grid-template-columns: minmax(190px, 0.7fr) minmax(420px, 1.55fr) minmax(190px, 0.7fr);
    gap: 18px;
  }

  .anatomy-note::after,
  .anatomy-note::before {
    width: 18px;
  }

  .anatomy-notes-left .anatomy-note::after {
    right: -18px;
  }

  .anatomy-notes-right .anatomy-note::before {
    left: -18px;
  }

  .anatomy-specs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .anatomy-specs article:nth-child(3) {
    border-right: 0;
  }

  .anatomy-specs article:nth-child(-n + 3) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
    gap: 9px 18px;
    padding-top: 11px;
    padding-bottom: 11px;
  }

  .nav {
    grid-column: 1 / -1;
    grid-row: 2;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .nav a {
    display: grid;
    min-height: 40px;
    place-items: center;
    padding: 6px;
    text-align: center;
  }

  .intro,
  .process-section,
  .regulation-section,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .architecture-grid {
    grid-template-columns: 1fr;
  }

  .systems-feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .systems-layout-row {
    grid-template-columns: 1fr;
  }

  .anatomy-board {
    grid-template-areas:
      "figure figure"
      "left right";
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .anatomy-note::after,
  .anatomy-note::before {
    display: none;
  }

  .footer {
    grid-template-columns: 1fr 1fr;
  }

  .footer-note {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  html {
    scroll-padding-top: 24px;
  }

  .site-header {
    position: static;
    padding-right: 16px;
    padding-left: 16px;
  }

  .brand {
    font-size: 0.94rem;
  }

  .header-action {
    padding: 0 12px;
    font-size: 0.86rem;
  }

  h1 {
    font-size: 2.65rem;
    line-height: 0.99;
  }

  h2 {
    font-size: 2.15rem;
  }

  .home-hero {
    min-height: 680px;
    padding: 80px 18px 32px;
    background-position: 58% center;
  }

  .hero-text {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
    margin: 26px 0;
  }

  .primary-button,
  .inverse-button {
    width: 100%;
  }

  .hero-stats {
    gap: 7px;
  }

  .hero-stats div {
    padding: 10px 6px;
    text-align: center;
  }

  .hero-stats dt {
    font-size: 1.08rem;
  }

  .hero-stats dd {
    font-size: 0.7rem;
  }

  .market-strip,
  .section,
  .page-hero,
  .cta-band,
  .footer {
    padding-right: 18px;
    padding-left: 18px;
  }

  .section {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .page-hero {
    padding-top: 58px;
    padding-bottom: 46px;
  }

  .model-line {
    grid-template-columns: 1fr auto;
    gap: 7px 14px;
    padding: 20px 0;
  }

  .line-purpose {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .line-price {
    font-size: 1.25rem;
  }

  .feature-grid,
  .operations-grid,
  .benchmark-grid,
  .safety-layers,
  .systems-feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid article,
  .operations-grid article,
  .benchmark-grid article,
  .safety-layers article,
  .systems-feature-grid article {
    min-height: 0;
  }

  .systems-visual figcaption {
    padding: 16px;
  }

  .anatomy-board {
    grid-template-areas:
      "figure"
      "left"
      "right";
    grid-template-columns: 1fr;
  }

  .anatomy-notes {
    gap: 0;
  }

  .anatomy-note {
    padding: 16px 0;
  }

  .anatomy-specs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .anatomy-specs article,
  .anatomy-specs article:nth-child(3) {
    border-right: 1px solid rgba(255, 255, 255, 0.16);
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .anatomy-specs article:nth-child(even) {
    border-right: 0;
  }

  .anatomy-specs article:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .layout-notes h3 {
    font-size: 1.65rem;
  }

  .model-detail,
  .architecture-grid article,
  .contact-form {
    padding: 22px;
  }

  .model-detail h2 {
    font-size: 2rem;
  }

  .model-kicker {
    margin-bottom: 16px;
  }

  .model-media {
    max-height: 520px;
  }

  .architecture-grid dl {
    grid-template-columns: 1fr;
  }

  .model-gallery,
  .technical-photo-grid {
    grid-template-columns: 1fr;
  }

  .gallery-secondary img,
  .technical-photo-grid img {
    max-height: 520px;
  }

  .timeline li {
    grid-template-columns: 52px 1fr;
    gap: 14px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .cta-band {
    flex-direction: column;
    align-items: stretch;
    padding-top: 50px;
    padding-bottom: 50px;
  }

  .footer {
    grid-template-columns: 1fr;
  }

  .footer-note {
    grid-column: auto;
  }
}

@media (max-width: 390px) {
  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .brand {
    gap: 7px;
    font-size: 0.86rem;
  }

  .header-action {
    min-height: 40px;
    font-size: 0.8rem;
  }

  h1 {
    font-size: 2.3rem;
  }

  h2 {
    font-size: 1.9rem;
  }

  .home-hero {
    min-height: 640px;
  }

  .model-line > span:first-child {
    gap: 9px;
  }

  .model-line strong {
    font-size: 1.16rem;
  }

  .model-kicker {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }
}