:root {
  --ink: #151621;
  --muted: #667085;
  --line: rgba(18, 24, 38, .12);
  --brand: #095294;
  --brand-dark: #06375f;
  --amber: #c78117;
  --soft: #f6f8fb;
  --shadow: 0 24px 70px rgba(30, 41, 59, .14);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  overflow-x: hidden;
}

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

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  padding: 0 clamp(18px, 5vw, 70px);
  color: #fff;
  transition: background .25s ease, color .25s ease, box-shadow .25s ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  color: var(--ink);
  background: rgba(255, 255, 255, .92);
  box-shadow: 0 14px 36px rgba(20, 33, 61, .08);
  backdrop-filter: blur(18px);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 850;
  font-size: 20px;
  letter-spacing: 0;
}

.brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 12px 26px rgba(9, 82, 148, .2);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 14px;
  font-weight: 750;
}

.nav-links a {
  opacity: .86;
}

.nav-links a:hover {
  opacity: 1;
}

.nav-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 17px;
  border-radius: 8px;
  color: #fff;
  background: var(--ink);
  font-weight: 800;
}

.site-header:not(.is-scrolled):not(.is-open) .nav-action {
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .28);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, .16);
  color: currentColor;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.mobile-nav {
  position: fixed;
  top: 68px;
  left: 14px;
  right: 14px;
  z-index: 45;
  display: none;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, .96);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav a {
  display: block;
  padding: 14px 12px;
  border-radius: 8px;
  font-weight: 800;
}

.section-band {
  position: relative;
  overflow: hidden;
}

.hero {
  min-height: 100vh;
  color: #fff;
  background: #061426;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(6, 20, 38, .92), rgba(6, 20, 38, .66) 52%, rgba(6, 20, 38, .38)), url("https://images.pexels.com/photos/325229/pexels-photo-325229.jpeg?auto=compress&cs=tinysrgb&w=2200") center / cover;
  transform: scale(1.04);
  animation: slowZoom 13s ease-out forwards;
}

.hero::after {
  position: absolute;
  inset: auto 0 0;
  height: 30%;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, .98));
  content: "";
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(420px, .9fr);
  gap: clamp(30px, 6vw, 76px);
  align-items: center;
  width: min(1180px, calc(100% - 40px));
  min-height: calc(100vh - 74px);
  margin: 0 auto;
  padding-top: 74px;
}

.eyebrow,
.kicker {
  margin: 0 0 16px;
  color: #93d5ff;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.kicker {
  color: var(--brand);
}

.hero h1 {
  margin: 0;
  font-size: clamp(64px, 11vw, 128px);
  line-height: .92;
  letter-spacing: 0;
}

.lead {
  max-width: 720px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, .86);
  font-size: clamp(20px, 3vw, 31px);
  line-height: 1.48;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border: 0;
  border-radius: 8px;
  font-weight: 850;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fff;
  background: var(--brand);
  box-shadow: 0 18px 38px rgba(9, 82, 148, .24);
}

.btn-secondary {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .32);
  background: rgba(255, 255, 255, .12);
  backdrop-filter: blur(12px);
}

.ops-panel {
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 8px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, .28);
  backdrop-filter: blur(18px);
  overflow: hidden;
}

.panel-photo span {
  position: absolute;
  left: 18px;
  bottom: 18px;
  padding: 9px 12px;
  border-radius: 8px;
  background: rgba(0, 0, 0, .42);
  font-size: 13px;
  font-weight: 850;
  backdrop-filter: blur(10px);
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid rgba(255, 255, 255, .16);
}

.panel-grid div {
  padding: 22px;
  border-right: 1px solid rgba(255, 255, 255, .12);
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}

.panel-grid div:nth-child(2n) {
  border-right: 0;
}

.panel-grid div:nth-last-child(-n+2) {
  border-bottom: 0;
}

.panel-grid span {
  display: block;
  color: rgba(255, 255, 255, .62);
  font-size: 12px;
  font-weight: 900;
}

.panel-grid strong {
  display: block;
  margin-top: 10px;
  font-size: 21px;
}

.summary-strip {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: min(1180px, calc(100% - 40px));
  margin: -82px auto 0;
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 8px;
  color: #fff;
  background: rgba(6, 20, 38, .66);
  backdrop-filter: blur(18px);
}

.summary-strip span {
  padding: 22px;
  text-align: center;
  font-weight: 850;
}

.summary-strip span+span {
  border-left: 1px solid rgba(255, 255, 255, .16);
}

.section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 112px 0;
}

.section-heading {
  max-width: 780px;
}

.section-heading h2,
.infra-copy h2,
.delivery-title h2,
.contact-card h2 {
  margin: 0;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.12;
  letter-spacing: 0;
}

.section-heading p:not(.kicker),
.infra-copy p,
.contact-card p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.service-rows {
  margin-top: 42px;
  border-top: 1px solid var(--line);
}

.service-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.service-no {
  color: var(--brand);
  font-size: 38px;
  font-weight: 900;
  line-height: 1;
}

.service-row h3 {
  margin: 0;
  font-size: clamp(23px, 3vw, 32px);
}

.service-row p {
  max-width: 820px;
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.infra-section {
  background: #fff;
}

.infra-inner {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(460px, 1.1fr);
  gap: clamp(34px, 7vw, 88px);
  align-items: center;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 112px 0;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: #fff;
}

.infra-gallery {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  grid-auto-rows: 210px;
  gap: 16px;
}

.infra-gallery figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  background: #0f172a;
  box-shadow: var(--shadow);
}

.infra-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.infra-gallery figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 8px 12px;
  border-radius: 8px;
  color: #fff;
  background: rgba(0, 0, 0, .38);
  font-weight: 850;
  backdrop-filter: blur(8px);
}

.gallery-large {
  grid-row: span 2;
}

.cases-section {
  padding-top: 50px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 44px;
}

.case-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 54px rgba(30, 41, 59, .08);
}

.case-card img {
  width: 100%;
  aspect-ratio: 1.35 / 1;
  object-fit: cover;
}

.case-card h3 {
  margin: 24px 24px 10px;
  font-size: 23px;
}

.case-card p {
  margin: 0 24px 26px;
  color: var(--muted);
  line-height: 1.7;
}

.delivery-section {
  background: #f6f8fb;
}

.delivery-inner {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: clamp(34px, 7vw, 88px);
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 112px 0;
}


.delivery-photo {
  position: relative;
  margin: 32px 0 0;
  overflow: hidden;
  border-radius: 8px;
  background: #0f172a;
  box-shadow: var(--shadow);
}

.delivery-photo img {
  width: 100%;
  aspect-ratio: 1.35 / 1;
  object-fit: cover;
}

.delivery-photo figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 8px 12px;
  border-radius: 8px;
  color: #fff;
  background: rgba(0,0,0,.4);
  font-weight: 850;
  backdrop-filter: blur(8px);
}

.timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
  border-left: 2px solid rgba(9, 82, 148, .22);
}

.timeline li {
  position: relative;
  padding: 0 0 36px 34px;
}

.timeline li:last-child {
  padding-bottom: 0;
}

.timeline li::before {
  position: absolute;
  left: -37px;
  top: 4px;
  width: 16px;
  height: 16px;
  border: 4px solid #f6f8fb;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 1px rgba(9, 82, 148, .24);
  content: "";
}

.timeline span {
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
}

.timeline strong {
  display: block;
  margin-top: 8px;
  font-size: 26px;
}

.timeline p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.contact-section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 112px 0;
}

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(30px, 5vw, 58px);
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(90deg, rgba(6, 20, 38, .94), rgba(6, 20, 38, .7)), url("https://images.unsplash.com/photo-1451187580459-43490279c0fa?auto=format&fit=crop&w=1600&q=85") center / cover;
  box-shadow: var(--shadow);
}

.contact-card h2,
.contact-card p {
  color: #fff;
}

.contact-card p {
  max-width: 720px;
  color: rgba(255, 255, 255, .76);
}

.site-footer {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 22px;
  align-items: center;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 50px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  white-space: nowrap;
  font-weight: 750;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s ease, transform .7s ease;
}

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

@keyframes slowZoom {
  from {
    transform: scale(1.08);
  }

  to {
    transform: scale(1.02);
  }
}

@media (max-width: 980px) {

  .nav-links,
  .nav-action {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

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

  .hero-inner {
    min-height: 0;
    padding: 120px 0 112px;
  }

  .summary-strip,
  .case-grid {
    grid-template-columns: 1fr 1fr;
  }

  .summary-strip {
    margin-top: -58px;
  }

  .summary-strip span:nth-child(3) {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, .16);
  }

  .summary-strip span:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, .16);
  }

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

@media (max-width: 680px) {
  .site-header {
    height: 66px;
    padding: 0 16px;
  }

  .brand-logo {
    width: 38px;
    height: 38px;
  }

  .hero-inner,
  .section,
  .infra-inner,
  .contact-section {
    width: calc(100% - 32px);
  }

  .hero h1 {
    font-size: 66px;
  }

  .lead {
    font-size: 19px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

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

  .panel-grid div,
  .panel-grid div:nth-child(2n),
  .panel-grid div:nth-last-child(-n+2) {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, .12);
  }

  .panel-grid div:last-child {
    border-bottom: 0;
  }

  .summary-strip,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .summary-strip span+span {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, .16);
  }

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

  .infra-gallery {
    grid-template-columns: 1fr;
    grid-auto-rows: 210px;
  }

  .gallery-large {
    grid-row: auto;
  }

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

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }

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