:root {
  --blue-950: #0b1d30;
  --blue-900: #112942;
  --blue-800: #183551;
  --blue-700: #1c3d5b;
  --blue-600: #1f3a5f;
  --blue-500: #2d537d;
  --steel-600: #52677d;
  --steel-500: #708399;
  --steel-300: #b8c4d0;
  --steel-200: #dbe3ea;
  --steel-100: #edf2f6;
  --paper: #f7f9fb;
  --white: #ffffff;
  --ink: #122236;
  --muted: #5f7082;
  --cyan: #55b7e8;
  --green: #7cba4a;
  --line: rgba(31, 58, 95, 0.13);
  --shadow: 0 24px 60px rgba(7, 19, 33, 0.11);
  --radius: 8px;
  --container: 1200px;
  --font: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Source Han Sans SC", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--blue-950);
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

::selection {
  color: var(--white);
  background: var(--blue-500);
}

.skip-link {
  position: fixed;
  z-index: 999;
  top: -100px;
  left: 20px;
  padding: 12px 20px;
  color: var(--white);
  background: var(--blue-600);
  border-radius: 0 0 var(--radius) var(--radius);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
}

.container {
  width: min(calc(100% - 64px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.13);
  transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.site-header.scrolled {
  background: rgba(9, 26, 44, 0.96);
  border-bottom-color: transparent;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  min-height: 86px;
  align-items: center;
  gap: 42px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand-mark {
  position: relative;
  display: grid;
  width: 46px;
  height: 46px;
  overflow: hidden;
  color: var(--white);
  background: linear-gradient(145deg, #2d5e95, var(--blue-600));
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: var(--radius);
  grid-template-columns: 1fr 1fr;
  place-items: center;
  font-size: 16px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -2px;
}

.brand-mark::after {
  position: absolute;
  right: -7px;
  bottom: -7px;
  width: 21px;
  height: 21px;
  content: "";
  background: rgba(85, 183, 232, 0.28);
  border-radius: 50%;
}

.brand-mark span {
  position: relative;
  z-index: 1;
}

.brand-copy {
  display: flex;
  flex-direction: column;
}

.brand-copy strong {
  font-size: 18px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.08em;
}

.brand-copy small {
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.54);
  font-size: 8px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.15em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 31px;
  margin-left: auto;
}

.desktop-nav a {
  position: relative;
  padding: 31px 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.25s ease;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: 21px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.desktop-nav a:hover,
.desktop-nav a.active {
  color: var(--white);
}

.desktop-nav a:hover::after,
.desktop-nav a.active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 22px;
}

.phone-link {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.phone-link span {
  color: rgba(255, 255, 255, 0.52);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.phone-link strong {
  margin-top: 3px;
  color: var(--white);
  font-size: 14px;
  letter-spacing: 0.03em;
}

.header-cta {
  display: inline-flex;
  min-height: 42px;
  padding: 0 20px;
  align-items: center;
  justify-content: center;
  color: var(--blue-900);
  background: var(--white);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 700;
  transition: transform 0.25s ease, background 0.25s ease;
}

.header-cta:hover {
  background: #e8f4fb;
  transform: translateY(-2px);
}

.menu-toggle,
.mobile-menu {
  display: none;
}

.hero {
  position: relative;
  display: flex;
  min-height: 720px;
  height: 100svh;
  max-height: 1080px;
  overflow: hidden;
  align-items: center;
  color: var(--white);
  background: var(--blue-950);
}

.hero-media,
.hero-overlay,
.hero-grid {
  position: absolute;
  inset: 0;
}

.hero-media img {
  height: 100%;
  object-fit: cover;
  object-position: 58% center;
  filter: saturate(0.75) contrast(1.05);
  transform: scale(1.025);
  animation: heroZoom 14s ease-out both;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(8, 23, 39, 0.9) 0%, rgba(10, 31, 52, 0.76) 43%, rgba(10, 29, 49, 0.27) 75%, rgba(9, 25, 42, 0.44) 100%),
    linear-gradient(180deg, rgba(4, 15, 28, 0.31), rgba(5, 18, 32, 0.37));
}

.hero-grid {
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.25) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.25) 1px, transparent 1px);
  background-size: 74px 74px;
  mask-image: linear-gradient(to right, #000, transparent 70%);
}

.hero::after {
  position: absolute;
  right: -16vw;
  bottom: -46vw;
  width: 74vw;
  height: 74vw;
  content: "";
  border: 1px solid rgba(85, 183, 232, 0.14);
  border-radius: 50%;
  box-shadow: 0 0 0 8vw rgba(85, 183, 232, 0.025), 0 0 0 16vw rgba(85, 183, 232, 0.018);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  padding-top: 108px;
  padding-bottom: 52px;
  align-items: end;
  gap: 56px;
  grid-template-columns: minmax(0, 1fr) 330px;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.16em;
}

.eyebrow.light {
  color: rgba(255, 255, 255, 0.62);
}

.eyebrow.dark {
  color: var(--blue-500);
}

.eyebrow-line {
  display: inline-block;
  width: 34px;
  height: 1px;
  background: currentColor;
}

.hero h1 {
  margin: 28px 0 24px;
  font-size: clamp(50px, 5.4vw, 70px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.055em;
}

.hero h1 span {
  color: #a7ddf5;
}

.hero-lead {
  max-width: 610px;
  margin: 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 16px;
  line-height: 1.8;
}

.hero-lead strong {
  color: var(--white);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  padding: 0 26px;
  align-items: center;
  justify-content: center;
  gap: 16px;
  border: 0;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.button svg {
  width: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.button-primary {
  color: var(--blue-900);
  background: var(--white);
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.14);
}

.button-primary:hover {
  background: #dff1fb;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.2);
  transform: translateY(-2px);
}

.button-ghost {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.04);
}

.button-ghost:hover {
  border-color: rgba(255, 255, 255, 0.56);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.hero-trust {
  display: flex;
  gap: 38px;
  margin-top: 54px;
}

.hero-trust > div {
  display: flex;
  min-width: 98px;
  flex-direction: column;
  padding-left: 15px;
  border-left: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-trust strong {
  font-size: 23px;
  font-weight: 700;
  line-height: 1.2;
}

.hero-trust sup {
  margin-left: 2px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 11px;
  font-weight: 400;
}

.hero-trust span {
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.48);
  font-size: 11px;
}

.hero-feature {
  position: relative;
  padding: 25px 26px 24px;
  overflow: hidden;
  background: rgba(9, 28, 47, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
}

.hero-feature::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 62px;
  height: 2px;
  content: "";
  background: var(--cyan);
}

.hero-feature-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.42);
  font-size: 9px;
  letter-spacing: 0.14em;
}

.hero-feature-head i {
  color: rgba(255, 255, 255, 0.75);
  font-size: 11px;
  font-style: normal;
  letter-spacing: 0.08em;
}

.feature-model {
  margin-top: 21px;
  color: var(--white);
  font-size: 45px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
}

.feature-model span {
  margin: 0 2px;
  color: var(--cyan);
}

.hero-feature > p {
  margin: 9px 0 21px;
  color: rgba(255, 255, 255, 0.54);
  font-size: 12px;
}

.hero-feature dl {
  margin: 0;
}

.hero-feature dl div {
  display: flex;
  padding: 10px 0;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12px;
}

.hero-feature dt {
  color: rgba(255, 255, 255, 0.45);
}

.hero-feature dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
}

.hero-feature > a {
  display: flex;
  width: 100%;
  margin-top: 12px;
  padding-top: 17px;
  align-items: center;
  justify-content: space-between;
  color: var(--white);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12px;
  font-weight: 600;
}

.hero-feature > a span {
  color: var(--cyan);
  font-size: 17px;
}

.scroll-cue {
  position: absolute;
  z-index: 3;
  right: calc((100vw - min(calc(100vw - 64px), var(--container))) / 2);
  bottom: 42px;
  display: flex;
  align-items: center;
  gap: 15px;
  color: rgba(255, 255, 255, 0.38);
  font-size: 8px;
  letter-spacing: 0.17em;
  writing-mode: vertical-rl;
}

.scroll-cue i {
  display: block;
  width: 1px;
  height: 44px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.16);
}

.scroll-cue i::after {
  display: block;
  width: 1px;
  height: 22px;
  content: "";
  background: var(--cyan);
  animation: scrollLine 2s ease-in-out infinite;
}

.hero-index {
  position: absolute;
  z-index: 2;
  bottom: 41px;
  left: max(32px, calc((100vw - var(--container)) / 2));
  color: rgba(255, 255, 255, 0.32);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.section {
  position: relative;
  padding: 116px 0;
}

.section-heading {
  display: grid;
  align-items: end;
  gap: 80px;
  margin-bottom: 58px;
  grid-template-columns: 1fr 0.8fr;
}

.section h2 {
  margin: 20px 0 0;
  color: var(--ink);
  font-size: clamp(30px, 3.1vw, 40px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.04em;
}

.section h2 span {
  color: var(--blue-500);
}

.heading-aside {
  padding-left: 32px;
  border-left: 1px solid var(--line);
}

.heading-aside p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.heading-aside a,
.text-link {
  color: var(--blue-500);
  font-size: 13px;
  font-weight: 700;
}

.heading-aside a span,
.text-link span {
  margin-left: 6px;
}

.products-section {
  overflow: hidden;
  background:
    linear-gradient(90deg, transparent 49.94%, rgba(31, 58, 95, 0.045) 50%, transparent 50.06%) center top / 74px 100%,
    var(--paper);
}

.product-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(3, 1fr);
}

.product-card {
  overflow: hidden;
  background: var(--white);
  border: 1px solid rgba(31, 58, 95, 0.11);
  border-radius: var(--radius);
  box-shadow: 0 8px 30px rgba(16, 41, 67, 0.03);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.product-card:hover {
  border-color: rgba(31, 58, 95, 0.24);
  box-shadow: var(--shadow);
  transform: translateY(-5px);
}

.product-image {
  position: relative;
  height: 265px;
  margin: 0;
  overflow: hidden;
  background: var(--blue-800);
}

.product-image img {
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  filter: saturate(0.82);
  transition: transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1), filter 0.4s ease;
}

.product-card:hover .product-image img {
  filter: saturate(1);
  transform: scale(1.04);
}

.product-image::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, rgba(4, 14, 24, 0.05), rgba(4, 14, 24, 0.42));
}

.product-badge {
  position: absolute;
  z-index: 1;
  top: 16px;
  left: 16px;
  padding: 6px 11px;
  color: var(--white);
  background: rgba(10, 30, 51, 0.74);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  backdrop-filter: blur(8px);
}

.product-no {
  position: absolute;
  z-index: 1;
  right: 17px;
  bottom: 4px;
  color: rgba(255, 255, 255, 0.35);
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
}

.product-body {
  padding: 25px 25px 24px;
}

.product-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.product-title-row span {
  color: var(--blue-500);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.product-title-row h3 {
  margin: 4px 0 0;
  color: var(--ink);
  font-size: 23px;
  line-height: 1.3;
}

.status-dot {
  display: block;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(124, 186, 74, 0.12);
}

.product-body > p {
  min-height: 50px;
  margin: 13px 0 21px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.spec-list {
  display: grid;
  margin: 0;
  border-top: 1px solid var(--line);
  grid-template-columns: 1fr 1fr;
}

.spec-list div {
  display: flex;
  padding: 11px 0;
  flex-direction: column;
  border-bottom: 1px solid var(--line);
}

.spec-list div:nth-child(odd) {
  padding-right: 8px;
  border-right: 1px solid var(--line);
}

.spec-list div:nth-child(even) {
  padding-left: 16px;
}

.spec-list dt {
  color: #8090a0;
  font-size: 10px;
}

.spec-list dd {
  margin: 3px 0 0;
  color: var(--ink);
  font-size: 12px;
  font-weight: 600;
}

.product-link {
  display: flex;
  margin-top: 20px;
  align-items: center;
  justify-content: space-between;
  color: var(--blue-600);
  font-size: 13px;
  font-weight: 700;
}

.product-link span {
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  border: 1px solid rgba(31, 58, 95, 0.18);
  border-radius: 50%;
  transition: color 0.25s ease, background 0.25s ease;
}

.product-link:hover span {
  color: var(--white);
  background: var(--blue-600);
}

.product-footnote {
  display: grid;
  margin-top: 26px;
  padding: 24px 28px;
  align-items: center;
  background: var(--steel-100);
  border-radius: var(--radius);
  gap: 24px;
  grid-template-columns: 52px 1fr auto;
}

.product-footnote > span {
  color: rgba(31, 58, 95, 0.2);
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
}

.product-footnote p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.product-footnote p strong {
  color: var(--ink);
}

.product-footnote a {
  color: var(--blue-600);
  font-size: 12px;
  font-weight: 700;
}

.strength-section {
  overflow: hidden;
  background: var(--white);
}

.strength-layout {
  display: grid;
  align-items: center;
  gap: 94px;
  grid-template-columns: 1.05fr 0.95fr;
}

.strength-visual {
  position: relative;
  min-height: 610px;
}

.visual-main {
  position: absolute;
  top: 0;
  right: 42px;
  bottom: 42px;
  left: 0;
  margin: 0;
  overflow: hidden;
  background: var(--blue-800);
  border-radius: var(--radius);
}

.visual-main img {
  height: 100%;
  object-fit: cover;
  object-position: 57% center;
  filter: saturate(0.78) contrast(1.06);
}

.visual-main::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, transparent 58%, rgba(3, 14, 26, 0.8));
}

.visual-main figcaption {
  position: absolute;
  z-index: 1;
  bottom: 23px;
  left: 25px;
  color: rgba(255, 255, 255, 0.64);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.visual-small {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 38%;
  height: 230px;
  margin: 0;
  overflow: hidden;
  border: 7px solid var(--white);
  border-radius: var(--radius);
  background: var(--blue-700);
  box-shadow: 0 20px 45px rgba(5, 20, 36, 0.18);
}

.visual-small img {
  height: 100%;
  object-fit: cover;
}

.visual-label {
  position: absolute;
  z-index: 2;
  top: 24px;
  left: 24px;
  display: flex;
  padding: 13px 16px;
  flex-direction: column;
  color: var(--white);
  background: rgba(8, 27, 47, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  backdrop-filter: blur(10px);
}

.visual-label span {
  color: var(--cyan);
  font-size: 8px;
  letter-spacing: 0.17em;
}

.visual-label strong {
  margin-top: 3px;
  font-size: 12px;
}

.strength-copy .section-intro {
  margin: 24px 0 31px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.capability-grid {
  display: grid;
  margin-bottom: 34px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  grid-template-columns: 1fr 1fr;
}

.capability-item {
  padding: 20px 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.capability-item strong {
  color: var(--blue-600);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
}

.capability-item small {
  margin-left: 3px;
  color: var(--blue-500);
  font-size: 11px;
  font-weight: 600;
}

.capability-item p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.process-list {
  display: flex;
  margin-bottom: 27px;
  flex-wrap: wrap;
  gap: 8px;
}

.process-list span {
  padding: 8px 11px;
  color: var(--steel-600);
  background: var(--steel-100);
  border-radius: 4px;
  font-size: 10px;
}

.about-section {
  overflow: hidden;
  color: var(--white);
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    var(--blue-900);
  background-size: 68px 68px;
}

.about-glow {
  position: absolute;
  top: -280px;
  left: -220px;
  width: 780px;
  height: 780px;
  background: radial-gradient(circle, rgba(62, 139, 196, 0.22), transparent 65%);
  pointer-events: none;
}

.about-section .container {
  position: relative;
  z-index: 1;
}

.about-top {
  display: grid;
  align-items: end;
  gap: 80px;
  grid-template-columns: 1fr 0.78fr;
}

.about-section h2 {
  color: var(--white);
}

.about-section h2 span {
  color: #9ed9f3;
}

.about-top > p {
  margin: 0;
  padding-left: 32px;
  color: rgba(255, 255, 255, 0.52);
  border-left: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 14px;
  line-height: 1.85;
}

.about-layout {
  display: grid;
  align-items: stretch;
  gap: 32px;
  margin-top: 70px;
  grid-template-columns: 1fr 0.9fr;
}

.history-panel {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.history-item {
  display: grid;
  padding: 24px 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  gap: 24px;
  grid-template-columns: 42px 1fr;
  transition: background 0.25s ease;
}

.history-item:hover {
  background: rgba(255, 255, 255, 0.025);
}

.history-item > span {
  color: rgba(255, 255, 255, 0.23);
  font-size: 16px;
  font-weight: 700;
}

.history-item.active > span {
  color: var(--cyan);
}

.history-item h3 {
  margin: 0 0 5px;
  font-size: 18px;
}

.history-item p {
  margin: 0;
  color: rgba(255, 255, 255, 0.46);
  font-size: 13px;
  line-height: 1.7;
}

.about-image {
  position: relative;
  min-height: 470px;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
}

.about-image img {
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.72) contrast(1.08);
}

.about-image::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, transparent 45%, rgba(4, 16, 28, 0.9));
}

.about-image-overlay {
  position: absolute;
  z-index: 1;
  right: 28px;
  bottom: 27px;
  left: 28px;
  display: flex;
  flex-direction: column;
}

.about-image-overlay span {
  color: var(--cyan);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.about-image-overlay strong {
  margin-top: 4px;
  font-size: 19px;
}

.credentials {
  display: grid;
  margin-top: 48px;
  padding-top: 28px;
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  gap: 24px;
  grid-template-columns: repeat(4, 1fr) 1.4fr;
}

.credentials > div {
  display: flex;
  flex-direction: column;
}

.credentials span {
  color: rgba(255, 255, 255, 0.28);
  font-size: 8px;
  letter-spacing: 0.16em;
}

.credentials strong {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 12px;
}

.credentials p {
  margin: 0;
  padding-left: 24px;
  color: rgba(255, 255, 255, 0.35);
  border-left: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 11px;
}

.contact-section {
  position: relative;
  overflow: hidden;
  padding: 104px 0 30px;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 8%, rgba(62, 139, 196, 0.2), transparent 34%),
    var(--blue-950);
}

.contact-section::before {
  position: absolute;
  top: 0;
  right: 7%;
  width: 1px;
  height: 100%;
  content: "";
  background: rgba(255, 255, 255, 0.06);
  box-shadow: -132px 0 rgba(255, 255, 255, 0.04), 132px 0 rgba(255, 255, 255, 0.04);
}

.contact-section .container {
  position: relative;
  z-index: 1;
}

.contact-heading {
  display: grid;
  align-items: end;
  gap: 80px;
  grid-template-columns: 1fr 0.65fr;
}

.contact-heading h2 {
  color: var(--white);
}

.contact-heading h2 span {
  color: #99d6f1;
}

.contact-heading > p {
  margin: 0;
  padding-left: 32px;
  color: rgba(255, 255, 255, 0.46);
  border-left: 1px solid rgba(255, 255, 255, 0.13);
  font-size: 14px;
  line-height: 1.8;
}

.contact-layout {
  display: grid;
  margin-top: 58px;
  gap: 80px;
  grid-template-columns: 0.75fr 1.25fr;
}

.contact-info {
  padding-top: 8px;
}

.contact-label {
  color: rgba(255, 255, 255, 0.34);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.contact-phone {
  display: flex;
  margin: 21px 0 30px;
  flex-direction: column;
}

.contact-phone small {
  color: rgba(255, 255, 255, 0.44);
  font-size: 11px;
}

.contact-phone strong {
  margin-top: 4px;
  font-size: clamp(30px, 3vw, 40px);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.contact-details {
  display: grid;
  margin: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  grid-template-columns: 1fr 1fr;
}

.contact-details div {
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-details div:nth-child(odd) {
  padding-right: 18px;
}

.contact-details dt {
  color: rgba(255, 255, 255, 0.32);
  font-size: 9px;
}

.contact-details dd {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
}

.contact-details a:hover {
  color: var(--cyan);
}

.contact-promise {
  display: flex;
  margin-top: 25px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  gap: 15px;
}

.contact-promise span {
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
}

.contact-promise p {
  margin: 0;
  color: rgba(255, 255, 255, 0.42);
  font-size: 11px;
  line-height: 1.65;
}

.inquiry-form {
  padding: 30px;
  color: var(--ink);
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.24);
}

.form-topline {
  display: flex;
  margin-bottom: 25px;
  padding-bottom: 18px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.form-topline strong {
  color: var(--blue-700);
  font-size: 18px;
}

.form-topline span {
  color: #8695a2;
  font-size: 9px;
}

.form-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr 1fr;
}

.form-honeypot {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.form-grid label.full {
  grid-column: 1 / -1;
}

.form-grid label > span {
  color: var(--steel-600);
  font-size: 11px;
  font-weight: 600;
}

.form-grid input,
.form-grid select,
.form-grid textarea {
  width: 100%;
  color: var(--ink);
  background: #f6f8fa;
  border: 1px solid #e2e8ee;
  border-radius: 5px;
  outline: none;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-grid input,
.form-grid select {
  height: 46px;
  padding: 0 13px;
  font-size: 12px;
}

.form-grid textarea {
  min-height: 104px;
  padding: 12px 13px;
  resize: vertical;
  font-size: 12px;
  line-height: 1.65;
}

.form-grid select {
  color: #657685;
}

.form-grid input::placeholder,
.form-grid textarea::placeholder {
  color: #9ba8b4;
}

.form-grid input:focus,
.form-grid select:focus,
.form-grid textarea:focus {
  background: var(--white);
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(45, 83, 125, 0.08);
}

.form-grid input:invalid:not(:placeholder-shown) {
  border-color: #d17676;
}

.form-bottom {
  display: flex;
  margin-top: 22px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.form-bottom p {
  max-width: 280px;
  margin: 0;
  color: #94a1ad;
  font-size: 9px;
  line-height: 1.6;
}

.form-bottom .button {
  min-width: 150px;
  min-height: 48px;
  color: var(--white);
  background: var(--blue-600);
}

.form-bottom .button:hover {
  background: var(--blue-500);
  box-shadow: 0 13px 28px rgba(31, 58, 95, 0.2);
  transform: translateY(-2px);
}

.form-status {
  display: none;
  margin-top: 15px;
  padding: 11px 13px;
  color: #2a6539;
  background: #edf8f0;
  border: 1px solid #cbe8d3;
  border-radius: 5px;
  font-size: 12px;
}

.form-status.show {
  display: block;
}

.form-status.error {
  color: #853d3d;
  background: #fff3f1;
  border-color: #efd1cb;
}

.form-bottom .button[disabled] {
  cursor: wait;
  opacity: 0.68;
  transform: none;
}

.footer-main {
  display: grid;
  margin-top: 74px;
  padding-top: 26px;
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.11);
  gap: 28px;
  grid-template-columns: auto 1fr auto;
}

.footer-brand .brand-mark {
  width: 37px;
  height: 37px;
  font-size: 13px;
}

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

.footer-brand .brand-copy small {
  font-size: 7px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 28px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.4);
  font-size: 10px;
}

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

.footer-main > p {
  margin: 0;
  color: rgba(255, 255, 255, 0.3);
  font-size: 9px;
}

.back-top {
  position: fixed;
  z-index: 40;
  right: 25px;
  bottom: 25px;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--white);
  background: rgba(31, 58, 95, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.15);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  backdrop-filter: blur(8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.back-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.75, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.product-grid .reveal:nth-child(2) {
  transition-delay: 0.08s;
}

.product-grid .reveal:nth-child(3) {
  transition-delay: 0.16s;
}

@keyframes heroZoom {
  from { transform: scale(1.09); }
  to { transform: scale(1.025); }
}

@keyframes scrollLine {
  0% { transform: translateY(-24px); }
  45%, 100% { transform: translateY(44px); }
}

@media (max-width: 1180px) {
  .desktop-nav {
    gap: 20px;
  }

  .phone-link {
    display: none;
  }

  .strength-layout {
    gap: 58px;
  }

  .contact-layout {
    gap: 48px;
  }
}

@media (max-width: 1024px) {
  .container {
    width: min(calc(100% - 48px), var(--container));
  }

  .desktop-nav,
  .header-actions {
    display: none;
  }

  .menu-toggle {
    display: flex;
    width: 44px;
    height: 44px;
    margin-left: auto;
    padding: 0;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    color: var(--white);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
  }

  .menu-toggle span {
    display: block;
    width: 18px;
    height: 1px;
    background: currentColor;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .mobile-menu {
    position: fixed;
    z-index: 99;
    top: 86px;
    right: 0;
    left: 0;
    display: flex;
    padding: 24px;
    flex-direction: column;
    background: rgba(7, 22, 38, 0.98);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.25);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease;
    backdrop-filter: blur(15px);
  }

  .mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .mobile-menu a {
    padding: 15px 3px;
    color: rgba(255, 255, 255, 0.74);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 15px;
  }

  .mobile-menu .mobile-call {
    margin-top: 15px;
    padding: 14px;
    color: var(--blue-900);
    text-align: center;
    background: var(--white);
    border: 0;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 700;
  }

  .hero {
    height: auto;
    min-height: 820px;
    max-height: none;
  }

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

  .hero-feature {
    display: none;
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero h1 {
    font-size: clamp(46px, 7vw, 64px);
  }

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

  .product-card:last-child {
    grid-column: 1 / -1;
  }

  .product-card:last-child .product-image {
    height: 340px;
  }

  .strength-layout,
  .about-layout {
    grid-template-columns: 1fr;
  }

  .strength-visual {
    min-height: 580px;
  }

  .strength-copy {
    max-width: 760px;
  }

  .about-top,
  .section-heading,
  .contact-heading {
    gap: 36px;
    grid-template-columns: 1fr;
  }

  .heading-aside,
  .about-top > p,
  .contact-heading > p {
    max-width: 650px;
    padding-left: 0;
    border-left: 0;
  }

  .about-image {
    min-height: 420px;
  }

  .credentials {
    grid-template-columns: repeat(4, 1fr);
  }

  .credentials p {
    grid-column: 1 / -1;
    padding: 18px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 0;
  }

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

  .contact-info {
    display: grid;
    column-gap: 42px;
    grid-template-columns: 0.7fr 1.3fr;
  }

  .contact-label,
  .contact-phone,
  .contact-promise {
    grid-column: 1;
  }

  .contact-details {
    grid-row: 1 / span 3;
    grid-column: 2;
    align-self: start;
  }
}

@media (max-width: 767px) {
  .container {
    width: min(calc(100% - 36px), var(--container));
  }

  .header-inner {
    min-height: 74px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
    font-size: 14px;
  }

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

  .mobile-menu {
    top: 74px;
  }

  .hero {
    min-height: 760px;
  }

  .hero-overlay {
    background: linear-gradient(180deg, rgba(7, 22, 39, 0.48), rgba(7, 22, 39, 0.87) 68%, var(--blue-950));
  }

  .hero-media img {
    object-position: 60% center;
  }

  .hero-grid {
    background-size: 52px 52px;
  }

  .hero-inner {
    padding-top: 116px;
    padding-bottom: 80px;
  }

  .eyebrow {
    font-size: 9px;
    letter-spacing: 0.12em;
  }

  .hero h1 {
    margin: 22px 0 20px;
    font-size: clamp(32px, 8.4vw, 40px);
    line-height: 1.2;
  }

  .hero-lead {
    font-size: 14px;
  }

  .hero-actions {
    flex-direction: column;
    margin-top: 29px;
  }

  .button {
    width: 100%;
    min-height: 50px;
  }

  .hero-trust {
    gap: 8px;
    margin-top: 39px;
    justify-content: space-between;
  }

  .hero-trust > div {
    min-width: 0;
    padding-left: 10px;
  }

  .hero-trust strong {
    font-size: 18px;
  }

  .hero-trust span {
    font-size: 9px;
  }

  .scroll-cue,
  .hero-index {
    display: none;
  }

  .section {
    padding: 76px 0;
  }

  .section h2 {
    font-size: clamp(28px, 8vw, 34px);
  }

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

  .section-heading {
    margin-bottom: 38px;
  }

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

  .product-card:last-child {
    grid-column: auto;
  }

  .product-card:last-child .product-image,
  .product-image {
    height: 245px;
  }

  .product-footnote {
    padding: 20px;
    align-items: flex-start;
    gap: 12px;
    grid-template-columns: 38px 1fr;
  }

  .product-footnote > span {
    font-size: 27px;
  }

  .product-footnote a {
    margin-left: 50px;
    grid-column: 1 / -1;
  }

  .strength-visual {
    min-height: 450px;
  }

  .visual-main {
    right: 24px;
    bottom: 54px;
  }

  .visual-small {
    width: 45%;
    height: 170px;
  }

  .capability-item {
    padding: 17px 14px;
  }

  .capability-item strong {
    font-size: 26px;
  }

  .about-layout {
    margin-top: 44px;
  }

  .about-image {
    min-height: 330px;
  }

  .history-item {
    padding: 20px 2px;
    gap: 14px;
    grid-template-columns: 30px 1fr;
  }

  .credentials {
    gap: 20px 12px;
    grid-template-columns: 1fr 1fr;
  }

  .contact-section {
    padding-top: 76px;
  }

  .contact-info {
    display: block;
  }

  .contact-details {
    display: grid;
  }

  .inquiry-form {
    padding: 22px 18px;
  }

  .form-topline {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

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

  .form-grid label.full {
    grid-column: auto;
  }

  .form-bottom {
    align-items: stretch;
    flex-direction: column-reverse;
  }

  .form-bottom p {
    max-width: none;
  }

  .footer-main {
    padding-bottom: 8px;
    grid-template-columns: 1fr auto;
  }

  .footer-links {
    display: none;
  }

  .footer-main > p {
    grid-column: 1 / -1;
  }

  .back-top {
    right: 16px;
    bottom: 16px;
  }
}

@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}