:root {
  --blue-950: #071d34;
  --blue-900: #0b2c50;
  --blue-800: #07539a;
  --blue-700: #0869c7;
  --blue-500: #25a8f2;
  --blue-100: #eaf4fa;
  --blue-50: #f4f8fc;
  --ink: #10253a;
  --copy: #536779;
  --muted: #758697;
  --line: #d9e2e9;
  --white: #ffffff;
  --shadow: 0 20px 55px rgba(7, 44, 82, 0.11);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: #ffffff;
  color: var(--ink);
  font-family:
    "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", "PingFang SC",
    Arial, sans-serif;
  text-rendering: optimizeLegibility;
}

body,
button,
a {
  -webkit-font-smoothing: antialiased;
}

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

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

button,
summary,
a {
  -webkit-tap-highlight-color: transparent;
}

section[id] {
  scroll-margin-top: 90px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 88px;
  border-bottom: 1px solid rgba(217, 226, 233, 0.76);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  width: min(100% - 64px, 1500px);
  height: 100%;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 14px;
}

.brand img {
  width: 66px;
  height: 66px;
  object-fit: contain;
}

.brand span {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand strong {
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand small {
  color: #7990a4;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(22px, 2.5vw, 42px);
  margin-left: auto;
}

.desktop-nav a {
  position: relative;
  padding: 33px 0 31px;
  color: #24384a;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}

.desktop-nav a::after {
  position: absolute;
  right: 50%;
  bottom: 20px;
  left: 50%;
  height: 3px;
  border-radius: 4px;
  background: var(--blue-700);
  content: "";
  transition: right 180ms ease, left 180ms ease;
}

.desktop-nav a:hover::after,
.desktop-nav a:focus-visible::after {
  right: 0;
  left: 0;
}

body:not(:has(main section:target)) .desktop-nav a[href="#home"],
body:has(#home:target) .desktop-nav a[href="#home"],
body:has(#products:target) .desktop-nav a[href="#products"],
body:has(#capabilities:target) .desktop-nav a[href="#capabilities"],
body:has(#quality:target) .desktop-nav a[href="#quality"],
body:has(#about:target) .desktop-nav a[href="#about"],
body:has(#contact:target) .desktop-nav a[href="#contact"] {
  color: var(--blue-800);
}

body:not(:has(main section:target)) .desktop-nav a[href="#home"]::after,
body:has(#home:target) .desktop-nav a[href="#home"]::after,
body:has(#products:target) .desktop-nav a[href="#products"]::after,
body:has(#capabilities:target) .desktop-nav a[href="#capabilities"]::after,
body:has(#quality:target) .desktop-nav a[href="#quality"]::after,
body:has(#about:target) .desktop-nav a[href="#about"]::after,
body:has(#contact:target) .desktop-nav a[href="#contact"]::after {
  right: 0;
  left: 0;
}

.header-phone {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-left: 34px;
  padding-left: 24px;
  border-left: 1px solid var(--line);
  color: var(--blue-800);
  font-size: 15px;
  font-weight: 800;
  white-space: nowrap;
}

.header-phone span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.mobile-menu {
  display: none;
}

.hero {
  overflow: hidden;
  background:
    radial-gradient(circle at 4% 62%, rgba(37, 168, 242, 0.06), transparent 22%),
    linear-gradient(125deg, #ffffff 0%, #ffffff 45%, var(--blue-50) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(520px, 45%) 1fr;
  min-height: 620px;
}

.hero-copy {
  z-index: 3;
  align-self: center;
  max-width: 700px;
  margin-left: max(40px, calc((100vw - 1500px) / 2));
  padding: 70px 42px 72px 0;
  animation: rise-in 600ms ease both;
}

.eyebrow,
.section-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 22px;
  color: var(--blue-700);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.eyebrow span {
  width: 34px;
  height: 3px;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--blue-800), var(--blue-500));
}

.hero h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(44px, 4vw, 66px);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.24;
}

.hero h1 span {
  color: var(--blue-700);
}

.hero-description {
  max-width: 620px;
  margin: 28px 0 0;
  color: var(--copy);
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-size: 16px;
  font-weight: 700;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.button span {
  margin-left: 24px;
  font-size: 21px;
  font-weight: 400;
  transition: transform 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button:hover span,
.button:focus-visible span {
  transform: translateX(4px);
}

.button-primary {
  color: white;
  background: linear-gradient(100deg, var(--blue-800), var(--blue-500));
  box-shadow: 0 14px 28px rgba(8, 105, 199, 0.24);
}

.button-primary:hover {
  box-shadow: 0 18px 36px rgba(8, 105, 199, 0.32);
}

.button-secondary {
  border-color: var(--blue-700);
  color: var(--blue-800);
  background: white;
}

.button-secondary:hover {
  background: var(--blue-100);
}

.hero-contact {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.hero-contact a {
  color: var(--ink);
  font-weight: 700;
}

.hero-contact a:hover {
  color: var(--blue-700);
}

.hero-contact > span {
  width: 1px;
  height: 14px;
  margin: 0 5px;
  background: var(--line);
}

.hero-visual {
  position: relative;
  min-width: 0;
  padding: 60px 0 0;
}

.hero-visual::before {
  position: absolute;
  top: 56px;
  right: 0;
  left: 6%;
  height: 88%;
  border-radius: 90px 0 0 0;
  background: linear-gradient(140deg, #e5f3ff, #f7fbff);
  content: "";
}

.hero-shape {
  position: absolute;
  border: 1px solid rgba(37, 168, 242, 0.18);
  border-radius: 50%;
}

.hero-shape-one {
  top: 8px;
  left: 5%;
  width: 280px;
  height: 280px;
}

.hero-shape-two {
  top: 52px;
  left: 10%;
  width: 185px;
  height: 185px;
}

.hero-visual figure {
  position: absolute;
  z-index: 2;
  inset: 98px 0 0 0;
  overflow: hidden;
  margin: 0;
  border-radius: 58px 0 0 0;
  box-shadow: -20px 30px 70px rgba(7, 44, 82, 0.12);
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
  animation: image-in 800ms ease both;
}

.hero-visual figure::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(7, 83, 154, 0.08),
    transparent 45%,
    rgba(7, 29, 52, 0.04)
  );
  content: "";
}

.hero-visual figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 600ms ease;
}

.hero-visual figure:hover img {
  transform: scale(1.015);
}

.hero-visual figcaption {
  position: absolute;
  z-index: 2;
  right: 34px;
  bottom: 30px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 220px;
  padding: 18px 22px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 5px;
  color: white;
  background: rgba(7, 44, 80, 0.76);
  backdrop-filter: blur(10px);
}

.hero-visual figcaption strong {
  font-size: 16px;
}

.hero-visual figcaption span {
  font-size: 11px;
  opacity: 0.82;
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  min-height: 118px;
  border-top: 1px solid rgba(217, 226, 233, 0.85);
  border-bottom: 1px solid rgba(217, 226, 233, 0.85);
  background: rgba(250, 253, 255, 0.92);
}

.hero-proof > div {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  position: relative;
}

.hero-proof > div + div::before {
  position: absolute;
  top: 28px;
  bottom: 28px;
  left: 0;
  width: 1px;
  background: var(--line);
  content: "";
}

.proof-icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid #b6d9f6;
  border-radius: 50%;
  color: var(--blue-700);
  font-size: 12px;
  font-weight: 800;
}

.hero-proof p {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin: 0;
}

.hero-proof strong {
  color: var(--blue-900);
  font-size: 18px;
}

.hero-proof small {
  color: var(--muted);
  font-size: 12px;
}

.section {
  width: min(100% - 64px, 1360px);
  margin: 0 auto;
  padding: 120px 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  align-items: end;
  gap: 70px;
  margin-bottom: 58px;
}

.section-kicker {
  margin-bottom: 18px;
}

.section-kicker.light {
  color: #72c8f5;
}

.section-heading h2,
.engineering-copy h2,
.about-copy h2,
.faq-heading h2,
.contact-copy h2,
.capability-copy h2 {
  max-width: 800px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(34px, 3vw, 50px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.28;
}

.section-heading > p,
.faq-heading > p {
  margin: 0;
  color: var(--copy);
  font-size: 16px;
  line-height: 1.9;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  position: relative;
  display: flex;
  min-height: 330px;
  padding: 30px 24px 25px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background:
    radial-gradient(circle at 100% 0, rgba(37, 168, 242, 0.13), transparent 34%),
    linear-gradient(160deg, #ffffff 0%, #f7fbfe 100%);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease,
    border-color 220ms ease;
}

.product-card::before {
  position: absolute;
  top: -55px;
  right: -50px;
  width: 150px;
  height: 150px;
  border: 1px solid rgba(8, 105, 199, 0.12);
  border-radius: 50%;
  content: "";
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: #b7d9f2;
  box-shadow: var(--shadow);
}

.product-number {
  position: relative;
  z-index: 1;
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 50%;
  color: white;
  background: var(--blue-800);
  font-size: 11px;
  font-weight: 800;
}

.product-copy {
  position: relative;
  z-index: 1;
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  padding-top: 25px;
}

.product-copy small {
  min-height: 31px;
  color: var(--blue-700);
  font-size: 9px;
  font-weight: 800;
  line-height: 1.55;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.product-copy h3 {
  margin: 12px 0 13px;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.45;
}

.product-copy p {
  margin: 0;
  color: var(--copy);
  font-size: 13px;
  line-height: 1.75;
}

.product-copy a,
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding-top: 22px;
  color: var(--blue-800);
  font-size: 13px;
  font-weight: 800;
}

.product-copy a span,
.text-link span {
  font-size: 20px;
  transition: transform 180ms ease;
}

.product-copy a:hover span,
.text-link:hover span {
  transform: translateX(4px);
}

.product-showcase {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.product-showcase figure {
  position: relative;
  height: 230px;
  margin: 0;
  overflow: hidden;
  border-radius: 6px;
  background: #eef4f8;
}

.product-showcase img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms ease;
}

.product-showcase figure:hover img {
  transform: scale(1.035);
}

.product-showcase figcaption {
  position: absolute;
  right: 14px;
  bottom: 14px;
  left: 14px;
  padding: 12px 14px;
  color: white;
  background: rgba(7, 29, 52, 0.88);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.capability-band {
  padding: 120px max(32px, calc((100vw - 1360px) / 2));
  color: white;
  background:
    radial-gradient(circle at 10% 18%, rgba(37, 168, 242, 0.16), transparent 22%),
    linear-gradient(125deg, #06182c 0%, #0b3157 100%);
}

.capability-intro {
  display: grid;
  grid-template-columns: minmax(420px, 0.92fr) minmax(480px, 1.08fr);
  align-items: center;
  gap: 86px;
}

.capability-photo {
  position: relative;
  min-height: 620px;
}

.capability-photo::before {
  position: absolute;
  inset: -24px 28px 28px -24px;
  border: 1px solid rgba(91, 192, 235, 0.34);
  content: "";
}

.capability-photo img {
  position: absolute;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.capability-photo span {
  position: absolute;
  z-index: 2;
  right: 24px;
  bottom: 24px;
  padding: 13px 18px;
  border-left: 3px solid var(--blue-500);
  background: rgba(6, 24, 44, 0.78);
  font-size: 13px;
  font-weight: 700;
  backdrop-filter: blur(10px);
}

.capability-copy h2 {
  color: white;
}

.capability-copy > p:not(.section-kicker) {
  margin: 28px 0 0;
  color: #b9cad8;
  font-size: 16px;
  line-height: 2;
}

.equipment-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-top: 42px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.12);
}

.equipment-stats > div {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-height: 130px;
  padding: 27px 28px;
  background: rgba(5, 24, 44, 0.7);
}

.equipment-stats strong {
  color: #69c9f6;
  font-family: Arial, sans-serif;
  font-size: 34px;
}

.equipment-stats span {
  color: #d5e2eb;
  font-size: 13px;
}

.process-wrap {
  display: grid;
  grid-template-columns: 0.75fr 2.25fr;
  gap: 70px;
  margin-top: 110px;
  padding-top: 64px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.process-heading span {
  color: #73c9f5;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.process-heading h3 {
  margin: 14px 0 0;
  color: white;
  font-size: 28px;
  line-height: 1.45;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.process-grid article {
  position: relative;
}

.process-grid article::before {
  position: absolute;
  top: 20px;
  right: -18px;
  width: 34px;
  height: 1px;
  background: rgba(114, 200, 245, 0.35);
  content: "";
}

.process-grid article:last-child::before {
  display: none;
}

.process-grid article > span {
  color: #67c4f1;
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.process-grid h4 {
  margin: 22px 0 13px;
  color: white;
  font-size: 18px;
}

.process-grid p {
  margin: 0;
  color: #aebfcd;
  font-size: 13px;
  line-height: 1.85;
}

.engineering-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(420px, 0.88fr);
  align-items: center;
  gap: 100px;
}

.engineering-lead,
.about-copy > p {
  margin: 27px 0 0;
  color: var(--copy);
  font-size: 16px;
  line-height: 1.95;
}

.engineering-copy ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin: 36px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.engineering-copy li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 18px 24px 0;
  border-bottom: 1px solid var(--line);
}

.engineering-copy li:nth-child(even) {
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.engineering-copy li strong {
  color: var(--blue-900);
  font-size: 16px;
}

.engineering-copy li span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.engineering-image {
  position: relative;
  min-height: 590px;
  margin: 0;
  background: var(--blue-50);
}

.engineering-image::before {
  position: absolute;
  top: -24px;
  right: -24px;
  width: 54%;
  height: 54%;
  border-top: 4px solid var(--blue-500);
  border-right: 4px solid var(--blue-500);
  content: "";
}

.engineering-image img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: multiply;
}

.engineering-image figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 250px;
  padding: 22px 26px;
  color: white;
  background: var(--blue-800);
}

.engineering-image figcaption span {
  font-size: 11px;
  opacity: 0.78;
}

.engineering-image figcaption strong {
  font-size: 16px;
}

.quality-section {
  padding: 120px max(32px, calc((100vw - 1360px) / 2));
  background:
    linear-gradient(rgba(234, 244, 250, 0.72) 1px, transparent 1px),
    linear-gradient(90deg, rgba(234, 244, 250, 0.72) 1px, transparent 1px),
    #f7fafc;
  background-size: 48px 48px;
}

.quality-inner {
  max-width: 1360px;
  margin: 0 auto;
}

.quality-heading {
  padding: 0;
}

.certificate-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.certificate-grid figure {
  margin: 0;
}

.certificate-grid figure > div {
  overflow: hidden;
  padding: 20px;
  border: 1px solid var(--line);
  background: white;
}

.certificate-grid img {
  width: 100%;
  aspect-ratio: 0.708;
  object-fit: cover;
  transition: transform 400ms ease;
}

.certificate-grid figure:hover img {
  transform: scale(1.025);
}

.certificate-grid figcaption {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 18px 4px 0;
}

.certificate-grid figcaption strong {
  color: var(--blue-900);
  font-size: 16px;
}

.certificate-grid figcaption span {
  color: var(--muted);
  font-size: 12px;
}

.inspection-panel {
  display: grid;
  grid-template-columns: 330px 1fr;
  min-height: 380px;
  margin-top: 74px;
  overflow: hidden;
  background: white;
  box-shadow: var(--shadow);
}

.inspection-image {
  position: relative;
  overflow: hidden;
  background: #eef4f8;
}

.inspection-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.inspection-copy {
  align-self: center;
  padding: 58px 72px;
}

.inspection-copy h3 {
  margin: 0;
  color: var(--ink);
  font-size: 32px;
}

.inspection-copy > p:not(.section-kicker) {
  max-width: 750px;
  margin: 20px 0 0;
  color: var(--copy);
  font-size: 15px;
  line-height: 1.9;
}

.inspection-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.inspection-list span {
  padding: 9px 14px;
  border: 1px solid #c5daea;
  border-radius: 2px;
  color: var(--blue-800);
  background: #f5faff;
  font-size: 12px;
  font-weight: 700;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(400px, 0.92fr);
  align-items: center;
  gap: 90px;
}

.about-photo {
  position: relative;
  min-height: 560px;
}

.about-photo > img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-photo > div {
  position: absolute;
  right: -30px;
  bottom: 34px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  width: min(82%, 480px);
  padding: 26px 30px;
  color: white;
  background: linear-gradient(110deg, var(--blue-800), var(--blue-500));
  box-shadow: 0 16px 36px rgba(7, 83, 154, 0.22);
}

.about-photo > div strong {
  font-size: 18px;
}

.about-photo > div span {
  font-size: 12px;
  opacity: 0.84;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  margin-top: 90px;
  border-top: 1px solid var(--line);
}

.timeline article {
  position: relative;
  padding: 30px 24px 0 0;
}

.timeline article > span {
  position: absolute;
  top: -5px;
  left: 0;
  width: 10px;
  height: 10px;
  border: 2px solid white;
  border-radius: 50%;
  background: var(--blue-700);
  box-shadow: 0 0 0 1px var(--blue-700);
}

.timeline strong {
  color: var(--blue-800);
  font-family: Arial, sans-serif;
  font-size: 22px;
}

.timeline p {
  margin: 12px 0 0;
  color: var(--copy);
  font-size: 12px;
  line-height: 1.75;
}

.faq-section {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 110px;
  border-top: 1px solid var(--line);
}

.faq-heading {
  position: sticky;
  top: 128px;
  align-self: start;
}

.faq-heading h2 {
  font-size: 42px;
}

.faq-heading > p {
  margin-top: 24px;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  display: grid;
  grid-template-columns: 50px 1fr auto;
  align-items: center;
  min-height: 88px;
  color: var(--ink);
  cursor: pointer;
  font-size: 17px;
  font-weight: 700;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary span {
  color: var(--blue-700);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.faq-list summary i {
  color: var(--blue-700);
  font-size: 24px;
  font-style: normal;
  font-weight: 300;
  transition: transform 180ms ease;
}

.faq-list details[open] summary i {
  transform: rotate(45deg);
}

.faq-list details > p {
  margin: -7px 45px 0 50px;
  padding: 0 0 28px;
  color: var(--copy);
  font-size: 14px;
  line-height: 1.9;
}

.contact-section {
  padding: 104px max(32px, calc((100vw - 1360px) / 2));
  color: white;
  background:
    radial-gradient(circle at 82% 18%, rgba(83, 190, 238, 0.2), transparent 28%),
    linear-gradient(125deg, #07539a 0%, #0c6ec1 62%, #148ed5 100%);
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(420px, 0.88fr);
  align-items: center;
  gap: 100px;
  max-width: 1360px;
  margin: 0 auto;
}

.contact-copy h2 {
  color: white;
  font-size: clamp(38px, 4vw, 56px);
}

.contact-copy > p:not(.section-kicker) {
  max-width: 680px;
  margin: 25px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  line-height: 1.9;
}

.button-white {
  color: var(--blue-800);
  background: white;
  box-shadow: 0 14px 30px rgba(4, 39, 72, 0.2);
}

.button-outline-white {
  border-color: rgba(255, 255, 255, 0.58);
  color: white;
  background: rgba(255, 255, 255, 0.04);
}

.button-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
}

.contact-card {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 18px 36px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 4px;
  background: rgba(4, 44, 83, 0.28);
  font-style: normal;
  backdrop-filter: blur(12px);
}

.contact-card > div {
  display: grid;
  grid-template-columns: 95px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.contact-card > div:last-child {
  border-bottom: 0;
}

.contact-card span {
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
}

.contact-card strong,
.contact-card a {
  color: white;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.7;
}

.contact-card a:hover {
  text-decoration: underline;
}

footer {
  padding: 58px max(32px, calc((100vw - 1360px) / 2)) 32px;
  color: #a8b7c5;
  background: #06182a;
}

.footer-inner {
  max-width: 1360px;
  margin: 0 auto;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-brand img {
  width: 62px;
  height: 62px;
  border-radius: 2px;
}

.footer-brand > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-brand strong {
  color: white;
  font-size: 18px;
}

.footer-brand span {
  font-size: 10px;
  letter-spacing: 0.08em;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  margin-top: 36px;
  padding: 26px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

footer nav a {
  font-size: 13px;
}

footer nav a:hover {
  color: white;
}

footer p {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  margin: 28px 0 0;
  font-size: 11px;
}

.mobile-contact-bar {
  display: none;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes image-in {
  from {
    opacity: 0;
    transform: translateX(28px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (max-width: 1250px) {
  .header-inner {
    width: min(100% - 40px, 1500px);
  }

  .brand strong {
    font-size: 17px;
  }

  .brand small {
    display: none;
  }

  .desktop-nav {
    gap: 22px;
  }

  .header-phone {
    display: none;
  }

  .hero-grid {
    grid-template-columns: minmax(470px, 48%) 1fr;
  }

  .hero-copy {
    margin-left: 40px;
  }

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

  .capability-intro,
  .engineering-grid,
  .about-grid,
  .contact-inner {
    gap: 60px;
  }

  .process-wrap {
    grid-template-columns: 1fr;
    gap: 34px;
  }
}

@media (max-width: 1020px) {
  .site-header {
    height: 76px;
  }

  .header-inner {
    width: min(100% - 32px, 1500px);
  }

  .brand img {
    width: 54px;
    height: 54px;
  }

  .brand strong {
    font-size: 16px;
  }

  .desktop-nav {
    display: none;
  }

  .mobile-menu {
    position: relative;
    display: block;
    margin-left: auto;
  }

  .mobile-menu summary {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    cursor: pointer;
    list-style: none;
  }

  .mobile-menu summary::-webkit-details-marker {
    display: none;
  }

  .mobile-menu summary i {
    width: 24px;
    height: 2px;
    margin-left: auto;
    border-radius: 2px;
    background: var(--blue-900);
  }

  .mobile-menu summary i:nth-child(2) {
    width: 18px;
  }

  .mobile-menu nav {
    position: absolute;
    top: 60px;
    right: 0;
    display: grid;
    width: min(340px, calc(100vw - 32px));
    padding: 12px 24px;
    border: 1px solid var(--line);
    background: white;
    box-shadow: var(--shadow);
  }

  .mobile-menu nav a {
    padding: 15px 0;
    border-bottom: 1px solid #e9eff3;
    font-size: 15px;
    font-weight: 700;
  }

  .mobile-menu nav a:last-child {
    border-bottom: 0;
  }

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

  .hero-copy {
    max-width: none;
    margin: 0;
    padding: 82px 48px 64px;
  }

  .hero-visual {
    min-height: 500px;
    padding: 0;
  }

  .hero-visual::before {
    top: 0;
    left: 24px;
    height: 100%;
    border-radius: 40px 0 0;
  }

  .hero-visual figure {
    inset: 30px 0 0 24px;
    border-radius: 34px 0 0;
    clip-path: none;
  }

  .hero-shape {
    display: none;
  }

  .hero-proof {
    min-height: 108px;
  }

  .section {
    width: min(100% - 48px, 1360px);
    padding: 90px 0;
  }

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

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

  .capability-band,
  .quality-section,
  .contact-section {
    padding: 90px 24px;
  }

  .capability-intro,
  .engineering-grid,
  .about-grid,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .capability-photo {
    min-height: 560px;
  }

  .capability-copy {
    padding-top: 10px;
  }

  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-grid article::before {
    display: none;
  }

  .engineering-image {
    order: -1;
  }

  .certificate-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-photo > div {
    right: 24px;
  }

  .timeline {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 34px;
    border-top: 0;
  }

  .timeline article {
    border-top: 1px solid var(--line);
  }

  .faq-section {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .faq-heading {
    position: static;
  }
}

@media (max-width: 680px) {
  html {
    scroll-padding-top: 76px;
  }

  body {
    padding-bottom: 58px;
  }

  .header-inner {
    width: calc(100% - 24px);
  }

  .brand {
    gap: 9px;
  }

  .brand img {
    width: 48px;
    height: 48px;
  }

  .brand strong {
    max-width: 220px;
    overflow: hidden;
    font-size: 13px;
    text-overflow: ellipsis;
  }

  .hero-copy {
    padding: 64px 22px 52px;
  }

  .eyebrow,
  .section-kicker {
    font-size: 10px;
    letter-spacing: 0.13em;
  }

  .hero h1 {
    font-size: clamp(36px, 10vw, 47px);
    line-height: 1.28;
  }

  .hero h1 br {
    display: none;
  }

  .hero-description {
    font-size: 15px;
    line-height: 1.85;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
    min-height: 54px;
  }

  .hero-contact {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-contact > span {
    display: none;
  }

  .hero-visual {
    min-height: 350px;
  }

  .hero-visual figure {
    inset: 22px 0 0 16px;
  }

  .hero-visual figcaption {
    right: 16px;
    bottom: 16px;
    min-width: 0;
    padding: 13px 15px;
  }

  .hero-proof {
    grid-template-columns: 1fr;
    padding: 8px 22px;
  }

  .hero-proof > div {
    justify-content: flex-start;
    min-height: 86px;
  }

  .hero-proof > div + div::before {
    top: 0;
    right: 0;
    bottom: auto;
    width: auto;
    height: 1px;
  }

  .section {
    width: calc(100% - 36px);
    padding: 74px 0;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 22px;
    margin-bottom: 38px;
  }

  .section-heading h2,
  .engineering-copy h2,
  .about-copy h2,
  .faq-heading h2,
  .contact-copy h2,
  .capability-copy h2 {
    font-size: 33px;
  }

  .section-heading > p {
    font-size: 14px;
  }

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

  .product-card {
    min-height: 285px;
    padding: 26px 24px 24px;
  }

  .product-copy h3 {
    font-size: 20px;
  }

  .product-showcase {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .product-showcase figure {
    height: 165px;
  }

  .product-showcase figcaption {
    right: 8px;
    bottom: 8px;
    left: 8px;
    padding: 9px 10px;
    font-size: 11px;
  }

  .capability-band,
  .quality-section,
  .contact-section {
    padding: 74px 18px;
  }

  .capability-intro,
  .engineering-grid,
  .about-grid,
  .contact-inner {
    gap: 44px;
  }

  .capability-photo {
    min-height: 390px;
  }

  .capability-photo::before {
    inset: -12px 12px 16px -8px;
  }

  .equipment-stats {
    grid-template-columns: 1fr;
  }

  .equipment-stats > div {
    min-height: 104px;
  }

  .process-wrap {
    margin-top: 70px;
  }

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

  .process-grid article {
    padding-bottom: 26px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .engineering-copy ul {
    grid-template-columns: 1fr;
  }

  .engineering-copy li:nth-child(even) {
    padding-left: 0;
    border-left: 0;
  }

  .engineering-image {
    min-height: 440px;
  }

  .certificate-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .certificate-grid figure > div {
    padding: 8px;
  }

  .certificate-grid figcaption strong {
    font-size: 14px;
  }

  .certificate-grid figcaption span {
    min-height: 32px;
    font-size: 10px;
  }

  .inspection-panel {
    grid-template-columns: 1fr;
  }

  .inspection-image {
    height: 360px;
  }

  .inspection-copy {
    padding: 38px 26px;
  }

  .inspection-copy h3 {
    font-size: 26px;
  }

  .about-photo {
    min-height: 390px;
  }

  .about-photo > div {
    right: 12px;
    bottom: 12px;
    width: calc(100% - 24px);
    padding: 20px;
  }

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

  .faq-list summary {
    grid-template-columns: 38px 1fr auto;
    min-height: 82px;
    font-size: 15px;
  }

  .faq-list details > p {
    margin-right: 20px;
    margin-left: 38px;
  }

  .contact-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .contact-card {
    padding: 10px 22px;
  }

  .contact-card > div {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  footer {
    padding: 48px 22px 32px;
  }

  .footer-brand strong {
    font-size: 14px;
  }

  .footer-brand span {
    line-height: 1.5;
  }

  footer nav {
    gap: 18px 24px;
  }

  footer p {
    flex-direction: column;
    gap: 8px;
  }

  .mobile-contact-bar {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 120;
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: 58px;
    padding: 7px;
    color: white;
    background: rgba(6, 24, 42, 0.96);
    backdrop-filter: blur(12px);
  }

  .mobile-contact-bar a {
    display: grid;
    place-items: center;
    border-radius: 3px;
    font-size: 14px;
    font-weight: 700;
  }

  .mobile-contact-bar a:first-child {
    border: 1px solid rgba(255, 255, 255, 0.22);
  }

  .mobile-contact-bar a:last-child {
    background: linear-gradient(90deg, var(--blue-800), var(--blue-500));
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}