:root {
  --navy-900: #0b1620;
  --navy-800: #12222f;
  --navy-700: #1c3245;
  --steel-600: #55626c;
  --steel-400: #8a97a3;
  --steel-200: #d7dde2;
  --steel-100: #f1f4f7;

  --accent-500: #1483d2;
  --accent-600: #0c5a90;
  --accent-100: #e8f3fb;

  --white: #ffffff;
  --success-600: #1c7a4b;

  --font-body: "Google Sans Flex", system-ui, -apple-system, sans-serif;
  --font-head: "Archivo", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", Consolas, monospace;

  --container-w: 1140px;
  --radius: 3px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent-500);
  outline-offset: 2px;
  border-radius: 2px;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--navy-800);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
  min-height: 100svh;
}

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

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

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-head);
  color: var(--navy-900);
  margin: 0 0 16px;
  line-height: 1.25;
}

h1 {
  font-size: 2.6rem;
  font-weight: 700;
}
h2 {
  font-size: 1.9rem;
  font-weight: 700;
}
h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

p {
  margin: 0 0 16px;
  color: var(--steel-600);
}

@media (max-width: 600px) {
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.55rem;
  }
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--accent-600);
  margin-bottom: 10px;
  padding-left: 14px;
  border-left: 2px solid var(--accent-500);
}

.content-main {
  flex: 1;
}

.section {
  padding: 52px 0;
}

.section--alt {
  background: var(--steel-100);
}

.section-head {
  max-width: 640px;
  margin-bottom: 28px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  margin-bottom: 5px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
  user-select: none;
}

.btn--primary {
  background: var(--accent-500);
  color: var(--white);
}
.btn--primary:hover {
  background: var(--accent-600);
}

.btn--outline-dark {
  border-color: var(--navy-800);
  color: var(--navy-800);
}
.btn--outline-dark:hover {
  background: var(--navy-800);
  color: var(--white);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--navy-900);
  border-bottom: 3px solid var(--accent-500);
  user-select: none;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.main-nav ul {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--steel-200);
  font-weight: 600;
  font-size: 0.94rem;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--white);
  border-bottom-color: var(--accent-500);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand img {
  height: 60px;
  width: auto;
  display: block;
  border-radius: 10px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--steel-400);
  border-radius: 4px;
  width: 40px;
  height: 40px;
  color: var(--white);
  font-size: 1.3rem;
  cursor: pointer;
}

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    top: 78px;
    left: 0;
    right: 0;
    background: var(--navy-900);
    border-bottom: 3px solid var(--accent-500);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .main-nav.open {
    max-height: 320px;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 20px;
  }
  .main-nav a {
    display: block;
    padding: 12px 0;
  }
  .header-actions .btn {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
}

.hero {
  background: var(--steel-100);
  color: var(--navy-800);
  padding: 60px 0 52px;
  position: relative;
  border-bottom: 1px solid var(--steel-200);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: var(--navy-900);
}

.hero p.lead {
  color: var(--steel-600);
  font-size: 1.1rem;
  max-width: 520px;
}

.hero-stats {
  display: flex;
  gap: 0;
  margin-top: 28px;
  flex-wrap: wrap;
  border-top: 1px solid var(--steel-200);
  padding-top: 18px;
}

.hero-stats > div {
  padding: 0 28px;
  border-left: 1px solid var(--steel-200);
}
.hero-stats > div:first-child {
  padding-left: 0;
  border-left: none;
}

.hero-stats .stat-num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--navy-900);
}
.hero-stats .stat-label {
  font-size: 0.74rem;
  color: var(--steel-600);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

.spec-frame {
  border: 1px solid var(--steel-200);
  background: var(--white);
  padding: 20px;
  position: relative;
}
.spec-frame img {
  width: 100%;
  height: auto;
  display: block;
}
.spec-frame .diagram-caption {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--steel-600);
  text-align: center;
}
.spec-frame .corner-tick {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1px solid var(--accent-500);
}
.spec-frame .corner-tick--tl {
  top: -1px;
  left: -1px;
  border-width: 1px 0 0 1px;
}
.spec-frame .corner-tick--tr {
  top: -1px;
  right: -1px;
  border-width: 1px 1px 0 0;
}
.spec-frame .corner-tick--bl {
  bottom: -1px;
  left: -1px;
  border-width: 0 0 1px 1px;
}
.spec-frame .corner-tick--br {
  bottom: -1px;
  right: -1px;
  border-width: 0 1px 1px 0;
}

.media-frame {
  border: 1px solid var(--steel-200);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--steel-100);
  line-height: 0;
}
.media-frame img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

.media-placeholder {
  border: 2px dashed var(--steel-400);
  border-radius: var(--radius);
  background: var(--steel-100);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--steel-600);
  padding: 32px 16px;
  min-height: 220px;
  gap: 8px;
}

.media-placeholder svg {
  width: 44px;
  height: 44px;
  opacity: 0.7;
}
.media-placeholder span {
  font-size: 0.82rem;
  letter-spacing: 0.03em;
}

.map-embed {
  width: 100%;
  height: 320px;
  border: 0;
  display: block;
}

.grid {
  display: grid;
  gap: 20px;
}
.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 900px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.card {
  background: var(--white);
  border: 1px solid var(--steel-200);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color 0.15s ease;
}
.card .icon-box {
  width: 40px;
  height: 40px;
  border-radius: 0;
  background: none;
  border: 1px solid var(--steel-400);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.card .icon-box svg {
  width: 20px;
  height: 20px;
  color: var(--navy-800);
}

.numbered-list {
  border-top: 1px solid var(--steel-200);
}
.numbered-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--steel-200);
}
.numbered-item .index {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent-500);
  padding-top: 2px;
}
.numbered-item h3 {
  margin-bottom: 8px;
}
.numbered-item p {
  margin-bottom: 0;
}

@media (max-width: 600px) {
  .numbered-item {
    grid-template-columns: 40px 1fr;
  }
}

.check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.check-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--steel-600);
  font-size: 0.96rem;
}
.check-list .check-icon {
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--success-600);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.check-list .check-icon svg {
  width: 12px;
  height: 12px;
}

.brand-split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 36px;
  align-items: center;
  margin-bottom: 28px;
}
.brand-split.reverse .brand-split-content {
  order: 2;
}

.brand-split.reverse .brand-split-media {
  order: 1;
}

@media (max-width: 860px) {
  .brand-split {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .brand-split.reverse .brand-split-content {
    order: 1;
  }

  .brand-split.reverse .brand-split-media {
    order: 2;
  }
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 20px 0 32px;
}
.spec-table th,
.spec-table td {
  border: 1px solid var(--steel-200);
  padding: 10px 12px;
  text-align: left;
}
.spec-table thead th {
  background: var(--navy-900);
  color: var(--white);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.spec-table tbody tr {
  transition: background 0.15s ease;
}
.spec-table tbody tr:hover {
  background: var(--steel-200);
}

.table-wrap {
  overflow-x: auto;
}

.cert-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  padding: 24px 14px;
  border: 1px solid var(--steel-200);
  border-radius: 0;
  position: relative;
}

.cert-badge .badge-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid var(--accent-500);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.1;
  color: var(--accent-600);
  text-align: center;
}
.cert-badge .badge-title {
  font-weight: 700;
  color: var(--navy-900);
  font-size: 0.92rem;
}
.cert-badge .badge-sub {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--steel-400);
}

.cert-badge .badge-img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  border: 1px solid var(--steel-200);
  border-radius: 50%;
  padding: 6px;
  background: var(--white);
}

.accessory-card {
  background: var(--white);
  border: 1px solid var(--steel-200);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.15s ease;
}
.accessory-card .accessory-media {
  background: var(--steel-100);
  line-height: 0;
}
.accessory-card .accessory-media img {
  width: 100%;
  height: auto;
  display: block;
}
.accessory-card .accessory-body {
  padding: 16px 18px 20px;
}
.accessory-card h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}
.accessory-card p {
  margin-bottom: 0;
  font-size: 0.88rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
@media (max-width: 860px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-item {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--steel-200);
}
.contact-item .icon-box {
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 0;
  background: none;
  border: 1px solid var(--steel-400);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-item .icon-box svg {
  width: 18px;
  height: 18px;
  color: var(--navy-800);
}
.contact-item h4 {
  margin-bottom: 4px;
}
.contact-item p {
  margin: 0;
}

.site-footer {
  background: var(--navy-900);
  color: var(--steel-200);
  padding: 18px 0 10px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--navy-700);
}
@media (max-width: 860px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.site-footer h4 {
  color: var(--white);
  font-size: 0.95rem;
  margin-bottom: 18px;
}
.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer li {
  margin-bottom: 10px;
  font-size: 0.9rem;
}
.site-footer a:hover {
  color: var(--white);
}
.site-footer p {
  color: var(--steel-400);
  font-size: 0.9rem;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--steel-400);
  flex-wrap: wrap;
  gap: 12px;
}