:root {
  --navy: #0b1533;
  --electric: #1fa9ff;
  --steel-silver: #c7ccd4;
  --white: #ffffff;
  --ink: #0b1533;
  --paper: #f4f7fb;
  --line: rgba(11, 21, 51, 0.14);
  --muted: #536071;
  --steel: #394963;
  --shadow: 0 18px 45px rgba(11, 21, 51, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(11, 21, 51, 0.94);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(1180px, calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 232px;
  color: var(--white);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark img {
  width: 48px;
  height: auto;
  flex: 0 0 auto;
  filter: drop-shadow(0 7px 12px rgba(0, 0, 0, 0.28));
}

.brand-lockup {
  display: grid;
  gap: 1px;
  line-height: 1.05;
}

.brand-lockup strong {
  color: var(--white);
  font-size: 1.04rem;
}

.brand-lockup small {
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.72rem;
  font-weight: 650;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.84);
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 650;
  padding: 10px 12px;
}

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

.button,
button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 0;
  border-radius: 6px;
  padding: 12px 18px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
  cursor: pointer;
}

.button.primary {
  background: var(--electric);
  color: var(--navy);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.button.dark {
  background: var(--ink);
  color: var(--white);
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: end;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(11, 21, 51, 0.96) 0%, rgba(11, 21, 51, 0.82) 48%, rgba(11, 21, 51, 0.58) 100%),
    url("assets/hero-infrastructure.jpg") center / cover no-repeat;
}

.hero-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 88px 0 72px;
}

.eyebrow {
  color: var(--electric);
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  margin: 0 0 14px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 22px;
  font-size: clamp(2.7rem, 7vw, 6.2rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 700px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 42px;
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  max-width: 980px;
  background: rgba(31, 169, 255, 0.24);
  border: 1px solid rgba(199, 204, 212, 0.24);
}

.signal {
  min-height: 112px;
  padding: 18px;
  background: rgba(11, 21, 51, 0.68);
}

.signal strong {
  display: block;
  font-size: 1.4rem;
  color: var(--white);
}

.signal span {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.9rem;
}

.section {
  padding: 82px 0;
}

.section.dark {
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(11, 21, 51, 0.98), rgba(7, 16, 37, 0.98));
}

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

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.section-head {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-head h2,
.page-title h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: 0;
  margin-bottom: 16px;
}

.section-head p,
.page-title p {
  color: var(--muted);
  font-size: 1.06rem;
}

.dark .section-head p,
.dark .muted {
  color: rgba(255, 255, 255, 0.72);
}

.grid {
  display: grid;
  gap: 18px;
}

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

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  padding: 24px;
  box-shadow: 0 1px 0 rgba(16, 17, 20, 0.03);
}

.agent-band {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 28px;
  align-items: center;
  margin-top: 22px;
  border: 1px solid rgba(16, 17, 20, 0.12);
  border-radius: 8px;
  padding: 26px;
  background:
    linear-gradient(135deg, rgba(11, 21, 51, 0.96), rgba(7, 16, 37, 0.94)),
    url("assets/bg-texture.png") center / cover;
  color: var(--white);
  box-shadow: var(--shadow);
}

.agent-id {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 7px 11px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.82rem;
  font-weight: 800;
}

.agent-band h3 {
  margin: 16px 0 8px;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  line-height: 1.02;
}

.agent-band p,
.agent-band li {
  color: rgba(255, 255, 255, 0.74);
}

.agent-card {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.06);
}

.agent-number {
  display: block;
  margin: 8px 0 14px;
  color: var(--white);
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  font-weight: 900;
  text-decoration: none;
}

.dark .panel {
  background: rgba(255, 255, 255, 0.055);
  border-color: rgba(255, 255, 255, 0.14);
}

.panel h3 {
  font-size: 1.12rem;
  margin-bottom: 10px;
}

.resource-card h3 a {
  color: var(--ink);
  text-decoration: none;
}

.article-body {
  max-width: 860px;
}

.article-body h2 {
  margin-top: 34px;
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  line-height: 1.08;
}

.article-body p {
  color: var(--muted);
  font-size: 1.07rem;
}

.panel p,
.panel li {
  color: var(--muted);
}

.dark .panel p,
.dark .panel li {
  color: rgba(255, 255, 255, 0.72);
}

.list {
  padding-left: 18px;
  margin: 14px 0 0;
}

.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 46px;
  align-items: center;
}

.visual-frame {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  background: var(--ink);
}

.metric-board {
  display: grid;
  gap: 12px;
}

.metric-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 18px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.metric-row strong {
  font-size: 1.6rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--navy);
  background: rgba(31, 169, 255, 0.1);
  font-size: 0.88rem;
  font-weight: 700;
}

.workflow {
  counter-reset: step;
  display: grid;
  gap: 14px;
}

.workflow .step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.64);
}

.workflow .step::before {
  counter-increment: step;
  content: counter(step);
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--electric);
  color: var(--navy);
  font-weight: 900;
}

.page-hero {
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(11, 21, 51, 0.96), rgba(11, 21, 51, 0.74)),
    url("assets/systems-visual.jpg") center / cover no-repeat;
  padding: 94px 0 72px;
}

.page-title {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.page-title p {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.78);
}

.page-title .eyebrow {
  color: var(--electric);
}

.contact-form {
  display: grid;
  gap: 14px;
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: var(--steel);
  font-weight: 800;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 13px 14px;
  font: inherit;
  background: var(--white);
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: 3px solid rgba(31, 169, 255, 0.18);
  border-color: var(--electric);
}

.contact-form textarea {
  min-height: 130px;
  resize: vertical;
}

.site-footer {
  padding: 46px 0;
  color: rgba(255, 255, 255, 0.72);
  background: var(--navy);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 28px;
}

.footer-grid a {
  display: block;
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
  margin: 8px 0;
}

.small {
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 900px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .signal-strip,
  .grid.three,
  .grid.four,
  .grid.two,
  .split,
  .agent-band,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    padding: 70px 0 54px;
  }

  .section {
    padding: 58px 0;
  }
}