:root {
  --ink: #20242a;
  --muted: #5e6874;
  --paper: #f6f3ed;
  --paper-2: #ebe7dd;
  --line: #c8c1b4;
  --dark: #15191f;
  --dark-2: #202731;
  --steel: #394554;
  --blueprint: #123a51;
  --signal: #13a37a;
  --warning: #d4a72c;
  --white: #fffdf8;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(32, 36, 42, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(32, 36, 42, .035) 1px, transparent 1px),
    var(--paper);
  background-size: 32px 32px;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

a {
  color: #0a6f8f;
}

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

.wrap {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  background: var(--dark);
  border-bottom: 4px solid var(--signal);
}

.topbar-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.identity {
  color: var(--white);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 14px;
}

.identity-box {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: var(--dark);
  background: var(--signal);
  font-weight: 900;
  letter-spacing: -.06em;
  border-radius: 2px;
  box-shadow: inset -5px -5px 0 rgba(0,0,0,.18);
}

.identity strong,
.identity em {
  display: block;
}

.identity strong {
  font-size: 1.05rem;
  letter-spacing: .08em;
}

.identity em {
  color: #aeb8c4;
  font-style: normal;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .14em;
}

.primary-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 2px;
}

.primary-nav a {
  color: #d5dce4;
  text-decoration: none;
  font-size: .84rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: 10px 12px;
  border-left: 1px solid rgba(255,255,255,.12);
}

.primary-nav a:hover {
  background: var(--steel);
  color: var(--white);
}

.technical-grid {
  position: relative;
  overflow: hidden;
}

.technical-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.hero,
.page-head {
  color: var(--white);
  background:
    linear-gradient(110deg, rgba(21,25,31,.98) 0%, rgba(21,25,31,.95) 55%, rgba(18,58,81,.95) 100%);
  border-bottom: 1px solid #0e1216;
}

.hero {
  padding: 82px 0;
}

.page-head {
  padding: 64px 0;
}

.hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: 1.35fr .75fr;
  gap: 44px;
  align-items: center;
  z-index: 1;
}

.label {
  margin: 0 0 12px;
  color: var(--signal);
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-family: Consolas, "Courier New", monospace;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.08;
}

h1 {
  max-width: 880px;
  font-size: clamp(2.3rem, 4.8vw, 4.9rem);
  letter-spacing: -.055em;
  margin-bottom: 20px;
}

h2 {
  font-size: clamp(1.7rem, 3vw, 3rem);
  letter-spacing: -.045em;
  margin-bottom: 18px;
}

h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.intro {
  max-width: 760px;
  color: #d4dde6;
  font-size: clamp(1.04rem, 2vw, 1.28rem);
}

.command-strip {
  margin-top: 30px;
  display: inline-grid;
  grid-template-columns: auto auto auto auto;
  gap: 0;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(0,0,0,.26);
  font-family: Consolas, "Courier New", monospace;
  font-size: .9rem;
}

.command-strip span,
.command-strip code {
  padding: 10px 12px;
  border-right: 1px solid rgba(255,255,255,.14);
}

.command-strip span {
  color: #9eabb8;
}

.command-strip code {
  color: var(--signal);
}

.system-card {
  background: #10151b;
  border: 1px solid rgba(255,255,255,.14);
  border-top: 5px solid var(--warning);
  box-shadow: 12px 12px 0 rgba(0,0,0,.22);
}

.system-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  color: var(--white);
  border-bottom: 1px solid rgba(255,255,255,.12);
  font-family: Consolas, "Courier New", monospace;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.node-light {
  width: 10px;
  height: 10px;
  background: var(--signal);
  display: inline-block;
}

.system-card a {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  padding: 16px 18px;
  color: #e0e7ef;
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,.09);
}

.system-card a:hover {
  background: var(--dark-2);
}

.system-card span {
  color: var(--signal);
  font-family: Consolas, "Courier New", monospace;
}

.section {
  padding: 68px 0;
}

.section-title {
  max-width: 780px;
  margin-bottom: 28px;
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.module {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 210px;
  color: var(--ink);
  text-decoration: none;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 8px 8px 0 rgba(32,36,42,.08);
}

.module:hover {
  border-color: var(--signal);
}

.module-image {
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, #e7e1d5, #f8f5ef);
  border-right: 1px solid var(--line);
  padding: 18px;
}

.module-image img {
  max-height: 155px;
  object-fit: contain;
}

.module-copy {
  padding: 24px;
}

.module-id {
  display: block;
  color: var(--signal);
  font-family: Consolas, "Courier New", monospace;
  font-size: .78rem;
  font-weight: 900;
  margin-bottom: 8px;
}

.module p,
.panel p,
.spec-table,
.check-grid,
.line-list {
  color: var(--muted);
}

.detail-layout {
  display: grid;
  grid-template-columns: 1fr .95fr;
  gap: 28px;
  padding-top: 58px;
  align-items: start;
}

.panel,
.equipment-photo {
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 8px 8px 0 rgba(32,36,42,.08);
}

.panel {
  padding: 32px;
}

.dark-panel {
  color: var(--white);
  background: var(--dark);
  border-top: 5px solid var(--signal);
}

.dark-panel p:not(.label) {
  color: #c9d3dc;
}

.equipment-photo {
  padding: 18px;
}

.equipment-photo img {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
}

.terminal-photo,
.diagram-photo {
  background: var(--dark);
}

.resource-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.resource-links a {
  display: inline-block;
  padding: 8px 10px;
  text-decoration: none;
  color: var(--dark);
  background: var(--paper-2);
  border-left: 4px solid var(--signal);
  font-weight: 800;
}

.spec-table {
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 8px 8px 0 rgba(32,36,42,.08);
}

.spec-table div {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 18px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

.spec-table div:last-child {
  border-bottom: 0;
}

.spec-table span {
  color: var(--blueprint);
  font-family: Consolas, "Courier New", monospace;
  font-weight: 900;
  text-transform: uppercase;
  font-size: .78rem;
}

.spec-table strong {
  color: var(--ink);
  font-weight: 700;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.check-grid div {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  padding: 20px 20px 20px 44px;
  min-height: 96px;
}

.check-grid div::before {
  content: "■";
  position: absolute;
  left: 20px;
  color: var(--signal);
  font-size: .72rem;
}

.split-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.line-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.line-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.line-list li:last-child {
  border-bottom: 0;
}

.contact-layout {
  grid-template-columns: .75fr 1fr;
}

.portrait-photo img {
  max-height: 450px;
  object-fit: cover;
}

.contact-lines {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.contact-lines a {
  color: var(--dark);
  background: var(--paper-2);
  border-left: 4px solid var(--signal);
  padding: 12px;
  text-decoration: none;
  font-weight: 800;
}

.footer {
  margin-top: 70px;
  background: var(--dark);
  color: #c7d0da;
  border-top: 4px solid var(--signal);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  padding: 30px 0;
}

.footer strong {
  color: var(--white);
}

.footer p {
  margin: 4px 0 0;
}

.footer-contact {
  display: grid;
  gap: 4px;
  text-align: right;
}

.footer a {
  color: var(--signal);
}

@media (max-width: 980px) {
  .hero-layout,
  .detail-layout,
  .split-panels,
  .contact-layout {
    grid-template-columns: 1fr;
  }

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

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

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

@media (max-width: 720px) {
  .topbar-inner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .primary-nav {
    justify-content: flex-start;
  }

  .primary-nav a {
    border-left: 0;
    border: 1px solid rgba(255,255,255,.14);
  }

  .module-grid,
  .check-grid {
    grid-template-columns: 1fr;
  }

  .spec-table div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .command-strip {
    grid-template-columns: 1fr;
    width: 100%;
  }

  .footer-contact {
    text-align: left;
  }
}

@media (max-width: 520px) {
  .wrap {
    width: min(100% - 28px, 1160px);
  }

  .hero,
  .page-head {
    padding: 48px 0;
  }

  .panel {
    padding: 24px;
  }
}