:root {
  color-scheme: light;
  --blue-700: #005eea;
  --blue-600: #0b6fff;
  --blue-500: #1687ff;
  --cyan-400: #4ec7ff;
  --navy-950: #020b1d;
  --navy-900: #061936;
  --navy-800: #092755;
  --ink: #071b3b;
  --muted: #52647f;
  --muted-dark: #9db0cc;
  --line: #dbe7f8;
  --line-strong: #b9cdeb;
  --surface: #ffffff;
  --surface-blue: #f5f9ff;
  --shadow: 0 22px 70px rgba(6, 25, 54, 0.14);
  --radius: 8px;
  --container: 1180px;
  --header-height: 74px;
  --font-sans: "Segoe UI", "Inter", Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

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

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

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

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  transform: translateY(-150%);
  background: var(--surface);
  color: var(--ink);
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(2, 11, 29, 0.98);
  backdrop-filter: blur(18px);
  transition: background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: rgba(11, 111, 255, 0.14);
  box-shadow: 0 12px 34px rgba(6, 25, 54, 0.08);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 28px;
}

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

.brand img {
  width: 178px;
  height: auto;
}

.primary-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 38px;
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 650;
}

.site-header.is-scrolled .primary-nav {
  color: var(--ink);
}

.primary-nav a {
  position: relative;
  padding: 8px 0;
}

.primary-nav a::after {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  content: "";
  background: var(--blue-600);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 160ms ease;
}

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

.header-cta {
  margin-left: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(78, 199, 255, 0.52);
  outline-offset: 3px;
}

.button-primary {
  background: linear-gradient(180deg, var(--blue-500), var(--blue-700));
  color: #ffffff;
  box-shadow: 0 14px 34px rgba(11, 111, 255, 0.26);
}

.button-primary:hover {
  box-shadow: 0 18px 42px rgba(11, 111, 255, 0.32);
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}

.button-secondary:hover {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  cursor: pointer;
}

.site-header.is-scrolled .nav-toggle {
  border-color: var(--line);
  background: #ffffff;
  color: var(--ink);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
  transition: transform 160ms ease, opacity 160ms ease;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  margin-top: var(--header-height);
  min-height: min(780px, 88svh);
  overflow: hidden;
  isolation: isolate;
  background: var(--navy-950);
  color: #ffffff;
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: -2;
  content: "";
  background-image: url("assets/hero-infrastructure.png");
  background-position: 68% top;
  background-size: cover;
  opacity: 0.96;
}

.hero::after {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  background:
    linear-gradient(90deg, rgba(2, 11, 29, 0.96) 0%, rgba(6, 25, 54, 0.82) 30%, rgba(6, 25, 54, 0.26) 58%, rgba(2, 11, 29, 0.1) 100%),
    linear-gradient(180deg, rgba(2, 11, 29, 0.18), rgba(2, 11, 29, 0.7));
}

.hero-grid {
  min-height: min(780px, 88svh);
  display: grid;
  align-items: center;
}

.hero-copy {
  width: min(560px, 100%);
  padding: 74px 0 64px;
}

.hero h1 {
  margin: 0 0 22px;
  color: #ffffff;
  font-size: clamp(5.5rem, 12vw, 10.2rem);
  font-weight: 780;
  line-height: 0.9;
  letter-spacing: 0;
  transform: translateY(-22px);
}

.hero-lede {
  max-width: 560px;
  margin: 0;
  color: #ffffff;
  font-size: clamp(1.62rem, 2.8vw, 2.25rem);
  font-weight: 650;
  line-height: 1.12;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.hero-actions .button {
  min-width: 170px;
}

.tagline {
  position: relative;
  margin: 30px 0 0;
  padding-left: 36px;
  color: #c4d8f6;
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.22em;
}

.tagline::before {
  position: absolute;
  left: 0;
  top: 50%;
  width: 20px;
  height: 2px;
  content: "";
  background: var(--blue-500);
  transform: translateY(-50%);
}

.section {
  padding: 88px 0;
}

.section-label {
  display: block;
  margin-bottom: 10px;
  color: var(--blue-700);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-copy h2,
.contact-copy h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 760;
  line-height: 1.03;
  letter-spacing: 0;
}

.section-copy p,
.contact-copy p {
  max-width: 520px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.03rem;
}

.section-services {
  padding-top: 72px;
  background: var(--surface);
}

.services-layout {
  display: grid;
  grid-template-columns: 0.76fr 1.6fr;
  gap: 54px;
  align-items: start;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--line);
  box-shadow: 0 16px 46px rgba(6, 25, 54, 0.07);
}

.service-card {
  min-height: 312px;
  padding: 34px 30px;
  background: #ffffff;
}

.icon-box {
  width: 62px;
  height: 62px;
  margin-bottom: 24px;
  color: var(--blue-600);
}

.icon-box svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card h3,
.stack-item h3,
.tab-panel h3 {
  margin: 0;
  color: var(--ink);
  font-size: 1.18rem;
  font-weight: 760;
}

.service-card p,
.stack-item p,
.tab-panel p {
  margin: 12px 0 0;
  color: var(--muted);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  color: var(--blue-700);
  font-weight: 760;
}

.text-link::after {
  content: "";
  width: 16px;
  height: 10px;
  background: currentColor;
  clip-path: polygon(0 42%, 72% 42%, 52% 8%, 64% 0, 100% 50%, 64% 100%, 52% 92%, 72% 58%, 0 58%);
}

.section-architecture {
  background: linear-gradient(180deg, #f5f9ff 0%, #ffffff 78%);
  border-block: 1px solid var(--line);
}

.architecture-layout {
  display: grid;
  grid-template-columns: 0.62fr 1.38fr;
  gap: 54px;
  align-items: start;
}

.stack {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: 0 18px 54px rgba(6, 25, 54, 0.08);
}

.stack::before {
  position: absolute;
  left: 9%;
  right: 9%;
  top: 28px;
  height: 2px;
  content: "";
  background: linear-gradient(90deg, var(--blue-600), var(--cyan-400), var(--blue-600));
}

.stack-item {
  position: relative;
  min-height: 242px;
  padding: 62px 22px 28px;
  border-right: 1px solid var(--line);
  text-align: center;
}

.stack-item:last-child {
  border-right: 0;
}

.stack-number {
  position: absolute;
  top: 15px;
  left: 50%;
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 30px;
  border-radius: 5px;
  background: var(--blue-600);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  transform: translateX(-50%);
}

.architecture-ribbon {
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin-top: -24px;
  color: var(--blue-700);
  font-size: 0.86rem;
  font-weight: 850;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.architecture-ribbon::before,
.architecture-ribbon::after {
  width: min(180px, 20%);
  height: 2px;
  content: "";
  background: var(--blue-600);
}

.architecture-ribbon span + span::before {
  content: "/";
  margin-right: 28px;
  color: var(--line-strong);
}

.section-solutions {
  background: var(--surface);
}

.solutions-layout {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 54px;
  align-items: start;
}

.solution-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tab-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-bottom: 1px solid var(--line);
  background: var(--surface-blue);
}

.tab-button {
  min-height: 58px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 780;
  cursor: pointer;
}

.tab-button:last-child {
  border-right: 0;
}

.tab-button.is-active {
  background: #ffffff;
  color: var(--blue-700);
  box-shadow: inset 0 -3px 0 var(--blue-600);
}

.tab-panel {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  gap: 36px;
  padding: 34px;
}

.feature-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding-left: 25px;
  color: var(--ink);
  font-weight: 650;
}

.feature-list li::before {
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 10px;
  height: 10px;
  border: 2px solid var(--blue-600);
  border-radius: 50%;
  content: "";
  transform: translateY(-50%);
}

.section-contact {
  background: linear-gradient(180deg, #f7fbff 0%, #ffffff 100%);
  border-top: 1px solid var(--line);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.52fr 1.48fr;
  gap: 52px;
  align-items: start;
}

.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  padding: 28px;
  box-shadow: 0 18px 54px rgba(6, 25, 54, 0.08);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 780;
}

.contact-form .wide {
  grid-column: span 4;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
  font-size: 0.95rem;
  min-height: 48px;
  padding: 12px 14px;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

.contact-form textarea {
  min-height: 118px;
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: #8b9bb3;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--blue-600);
  box-shadow: 0 0 0 4px rgba(11, 111, 255, 0.12);
}

.form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 18px;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--blue-700);
  font-weight: 700;
}

.site-footer {
  background: var(--navy-950);
  color: #ffffff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.6fr;
  gap: 54px;
  padding: 56px 0 42px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 28px;
}

.footer-brand img {
  width: 172px;
  height: auto;
}

.footer-brand p {
  margin: 0;
  padding-left: 28px;
  border-left: 1px solid rgba(255, 255, 255, 0.28);
  color: var(--muted-dark);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
}

.footer-links h2 {
  margin: 0 0 13px;
  color: #ffffff;
  font-size: 0.84rem;
}

.footer-links a {
  display: block;
  margin-top: 8px;
  color: var(--muted-dark);
  font-size: 0.9rem;
}

.footer-links a:hover,
.legal-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0 24px;
  color: var(--muted-dark);
  font-size: 0.86rem;
}

.footer-bottom p {
  margin: 0;
}

.legal-links {
  display: flex;
  gap: 18px;
}

@media (max-width: 1040px) {
  .header-cta {
    display: none;
  }

  .services-layout,
  .architecture-layout,
  .solutions-layout,
  .contact-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .service-card {
    min-height: auto;
  }

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

  .stack::before {
    left: 29px;
    right: auto;
    top: 30px;
    bottom: 30px;
    width: 2px;
    height: auto;
  }

  .stack-item {
    min-height: auto;
    padding: 28px 28px 28px 82px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    text-align: left;
  }

  .stack-item:last-child {
    border-bottom: 0;
  }

  .stack-number {
    left: 29px;
    transform: translateX(-50%);
  }

  .architecture-ribbon {
    grid-column: auto;
    margin-top: 22px;
  }

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

  .contact-form .wide {
    grid-column: span 2;
  }
}

@media (max-width: 780px) {
  .container {
    width: min(100% - 32px, var(--container));
  }

  .site-header {
    height: 66px;
  }

  :root {
    --header-height: 66px;
  }

  .brand img {
    width: 146px;
  }

  .nav-toggle {
    display: block;
  }

  .primary-nav {
    position: fixed;
    top: var(--header-height);
    left: 16px;
    right: 16px;
    display: none;
    margin: 0;
    padding: 18px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius);
    background: rgba(2, 11, 29, 0.98);
    box-shadow: 0 20px 60px rgba(2, 11, 29, 0.38);
  }

  .site-header.is-scrolled .primary-nav {
    background: #ffffff;
    border-color: var(--line);
    box-shadow: 0 20px 60px rgba(6, 25, 54, 0.18);
  }

  .primary-nav.is-open {
    display: grid;
    gap: 10px;
  }

  .primary-nav a {
    padding: 12px 8px;
  }

  .hero {
    min-height: 680px;
  }

  .hero::before {
    background-position: 62% top;
  }

  .hero::after {
    background:
      linear-gradient(180deg, rgba(2, 11, 29, 0.94) 0%, rgba(6, 25, 54, 0.86) 50%, rgba(2, 11, 29, 0.42) 100%),
      linear-gradient(90deg, rgba(2, 11, 29, 0.92), rgba(2, 11, 29, 0.36));
  }

  .hero-grid {
    min-height: 680px;
  }

  .hero-copy {
    padding: 86px 0 40px;
  }

  .hero h1 {
    font-size: clamp(5.2rem, 26vw, 7.5rem);
    transform: translateY(-10px);
  }

  .hero-lede {
    font-size: 1.55rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .tagline {
    padding-left: 28px;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
  }

  .section {
    padding: 64px 0;
  }

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

  .tab-button {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .contact-form .wide {
    grid-column: span 1;
  }

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

  .form-actions .button {
    width: 100%;
  }

  .footer-brand {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-brand p {
    padding-left: 0;
    border-left: 0;
  }

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

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: 640px;
  }

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

  .section-copy h2,
  .contact-copy h2 {
    font-size: 2rem;
  }

  .contact-form,
  .tab-panel,
  .service-card {
    padding: 24px;
  }

  .architecture-ribbon {
    gap: 12px;
    font-size: 0.74rem;
    letter-spacing: 0.14em;
  }

  .architecture-ribbon::before,
  .architecture-ribbon::after {
    display: none;
  }

  .architecture-ribbon span + span::before {
    margin-right: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}