@font-face { font-family: 'NetTandem Display'; src: url('assets/fonts/nettandem-display.woff') format('woff'); font-style: normal; font-weight: 700; font-display: swap; }

/* Цветовые роли светлой и тёмной темы. */
:root {
  color-scheme: light;
  --page: #f3f8fc;
  --surface: #ffffff;
  --ice: #eaf4fb;
  --ink: #102c45;
  --text: #254c68;
  --muted: #536f84;
  --blue: #087fb8;
  --cyan: #35b7ed;
  --line: #c9dfed;
  --red: #f0364c;
  --on-blue: #ffffff;
  --focus: #075780;
  --secondary-surface: rgba(255, 255, 255, .6);
  --principle-line: #bdd9e9;
  --hero-image: url('assets/infrastructure-light.png');
  --art-blend: multiply;
  --container: 1240px;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #061629;
  --surface: #091d32;
  --ice: #0c233b;
  --ink: #def3ff;
  --text: #afd2e9;
  --muted: #91abc1;
  --blue: #70caff;
  --line: #1d3c55;
  --red: #ff3c54;
  --on-blue: #062237;
  --focus: #c4edff;
  --secondary-surface: rgba(12, 35, 59, .75);
  --principle-line: #21435d;
  --hero-image: url('assets/infrastructure-dark.png');
  --art-blend: normal;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 30px; }
body { margin: 0; color: var(--ink); background: var(--page); font: 16px/1.6 -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; }
svg, img { display: block; }
p, h1, h2, h3, figure { margin: 0; }
.container { width: min(var(--container), calc(100% - 96px)); margin-inline: auto; }
.symbol-library { width: 0; height: 0; overflow: hidden; position: absolute; }
.icon { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.skip-link { position: fixed; z-index: 100; top: 10px; left: 10px; padding: 9px 16px; background: var(--ink); color: var(--surface); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; gap: 35px; min-height: 101px; }
.brand { display: inline-flex; align-items: center; gap: 13px; flex-shrink: 0; }
.brand-symbol { width: 60px; height: auto; }
.brand-text { display: flex; flex-direction: column; }
.brand-name { font-family: 'Trebuchet MS', 'Segoe UI', Arial, sans-serif; font-size: 36px; font-weight: 750; line-height: 1.1; letter-spacing: -1.9px; }
.brand-name > span { color: var(--blue); }
.brand-caption { font-size: 8px; letter-spacing: 3.25px; margin-top: 5px; padding-left: 3px; color: var(--text); }
.navigation { display: flex; align-items: center; gap: 34px; margin-left: auto; }
.navigation a { color: var(--text); font-size: 13px; }
.navigation a:hover { color: var(--blue); }
.theme-toggle { display: grid; place-items: center; width: 34px; height: 34px; flex-shrink: 0; padding: 7px; border: 1px solid var(--line); border-radius: 3px; color: var(--text); background: transparent; cursor: pointer; }
.theme-toggle[hidden] { display: none; }
.theme-toggle:hover { color: var(--blue); border-color: var(--blue); }
.theme-toggle .icon { width: 18px; height: 18px; }
.theme-sun { display: none; }
:root[data-theme="dark"] .theme-moon { display: none; }
:root[data-theme="dark"] .theme-sun { display: block; }
.header-contact { display: flex; align-items: center; gap: 21px; color: var(--ink); border-bottom: 2px solid var(--red); padding-block: 10px; margin-left: 18px; font-size: 12px; font-weight: 650; white-space: nowrap; }
.header-contact .icon { width: 18px; height: 18px; }
.header-contact:hover { color: var(--blue); }
.hero { position: relative; overflow: hidden; background: var(--page); }
.hero-grid-bg { position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(90deg, transparent 49.95%, rgba(95, 165, 204, .08) 50%, transparent 50.05%); background-size: 96px 96px; opacity: .65; }
.hero-layout { position: relative; min-height: 602px; display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 8px; }
.hero-copy { position: relative; z-index: 2; padding-block: 59px 60px; }
.eyebrow { display: flex; align-items: center; gap: 9px; font-size: 10px; letter-spacing: 1.55px; text-transform: uppercase; color: var(--muted); }
.red-square { width: 5px; height: 5px; background: var(--red); }
.hero-title-block { position: relative; margin-top: 26px; }
.hero-title-block::before { content: ''; position: absolute; left: -24px; width: 3px; top: 2px; bottom: 5px; background: var(--red); box-shadow: 0 0 13px rgba(240, 54, 76, .15); }
h1, h2 { font-family: 'NetTandem Display', 'Arial Narrow', Arial, sans-serif; font-weight: 700; text-transform: uppercase; }
h1 { font-size: clamp(44px, 4.7vw, 69px); line-height: 1.02; letter-spacing: -.7px; }
h1 > span { display: block; white-space: nowrap; }
h1 > span:last-child { color: var(--blue); }
.hero-directions { display: flex; align-items: center; gap: 14px; color: var(--text); font-size: 22px; line-height: 1.3; letter-spacing: -.4px; margin-top: 20px; }
.hero-directions i { display: block; width: 5px; height: 5px; background: var(--red); border-radius: 50%; }
.hero-description { max-width: 440px; margin-top: 24px; color: var(--muted); font-size: 15px; line-height: 1.85; }
.hero-actions { display: flex; align-items: center; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 28px; min-height: 51px; padding: 13px 20px; border: 1px solid transparent; border-radius: 3px; font-size: 12px; font-weight: 600; transition: background-color .16s, border-color .16s, color .16s; }
.button-primary { background: var(--blue); color: var(--on-blue); border-color: var(--blue); box-shadow: 0 7px 18px rgba(8, 127, 184, .1); }
.button-primary:hover { background: var(--focus); border-color: var(--focus); }
.button-secondary { border-color: var(--line); color: var(--ink); background: var(--secondary-surface); gap: 19px; }
.button-secondary:hover { border-color: var(--blue); }
.button-secondary > span { font-size: 18px; line-height: 1; font-weight: 400; }
.hero-note { display: flex; align-items: center; gap: 10px; margin-top: 25px; color: var(--muted); font-size: 11px; }
.hero-note > span { width: 20px; height: 1px; background: var(--blue); }
.hero-visual { position: relative; z-index: 1; width: calc(100% + 100px); margin-left: -39px; padding-top: 25px; }
.hero-art { position: relative; width: 100%; height: auto; aspect-ratio: 3/2; background: var(--hero-image) center / contain no-repeat; mix-blend-mode: var(--art-blend); mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent), linear-gradient(transparent, #000 8%, #000 92%, transparent); mask-composite: intersect; }
.visual-corner { position: absolute; width: 24px; height: 24px; border-color: var(--line); border-style: solid; z-index: 3; }
.corner-top { right: 49px; top: 8px; border-width: 1px 1px 0 0; }
.corner-bottom { left: 24px; bottom: 51px; border-width: 0 0 1px 1px; }
.hero-visual figcaption { display: flex; justify-content: center; align-items: center; gap: 7px; margin: 2px 46px 0 0; font-size: 9px; color: var(--muted); letter-spacing: .4px; }
.hero-visual figcaption > span { color: var(--blue); font: 15px/1 monospace; }
.hero-baseline { position: relative; z-index: 2; display: flex; align-items: center; gap: 45px; min-height: 87px; border-top: 1px solid var(--line); }
.baseline-label { font: 9px/1.5 'Courier New', monospace; letter-spacing: 1.2px; color: var(--muted); }
.hero-baseline ul { padding: 0; margin: 0; display: flex; gap: 47px; list-style: none; }
.hero-baseline li { display: flex; align-items: center; gap: 12px; font-size: 17px; font-weight: 600; letter-spacing: -.3px; }
.hero-baseline li::before { content: ''; height: 4px; width: 4px; background: var(--red); }
.baseline-end { margin-left: auto; color: var(--muted); font: 9px/1.5 'Courier New', monospace; letter-spacing: 1px; }
.section-space { padding-block: 82px; }
.technologies { background: var(--surface); border-block: 1px solid var(--line); }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 50px; margin-bottom: 35px; }
.section-kicker { display: flex; gap: 11px; align-items: center; color: var(--muted); text-transform: uppercase; font-size: 9px; font-weight: 500; letter-spacing: 1.8px; }
.section-kicker > span { color: var(--red); font: 10px/1.5 'Courier New', monospace; padding-right: 11px; border-right: 1px solid var(--line); }
h2 { margin-top: 21px; font-size: 44px; line-height: 1.05; letter-spacing: -.3px; }
h2 > span { color: var(--blue); }
.section-intro { color: var(--muted); font-size: 14px; line-height: 1.9; padding-bottom: 2px; }
.technology-rows { border-top: 1px solid var(--line); }
.technology-row { display: grid; grid-template-columns: .85fr 1.25fr .4fr; align-items: center; gap: 35px; min-height: 116px; padding-block: 24px; border-bottom: 1px solid var(--line); }
.technology-name { display: flex; align-items: center; gap: 23px; }
.tech-icon { width: 30px; height: 30px; flex-shrink: 0; fill: none; stroke: var(--blue); stroke-width: 1.3; stroke-linecap: square; stroke-linejoin: miter; }
.technology-name h3 { font-size: 25px; letter-spacing: -.6px; font-weight: 650; }
.technology-row > p { max-width: 530px; color: var(--muted); font-size: 13px; line-height: 1.85; }
.technology-meta { justify-self: end; font: 8px/1.5 'Courier New', monospace; letter-spacing: 1px; color: var(--muted); }
.scope-line { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-top: 25px; color: var(--muted); font-size: 10px; }
.scope-line ul { display: flex; gap: 21px; flex-wrap: wrap; margin: 0; padding: 0; list-style: none; }
.scope-line li { display: flex; gap: 8px; align-items: center; color: var(--text); font-size: 10px; }
.scope-line li::before { content: ''; width: 3px; height: 3px; background: var(--red); }
.approach { position: relative; background: var(--ice); border-bottom: 1px solid var(--line); }
.approach-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; }
.approach-intro { position: relative; }
.approach-intro h2 { font-size: 54px; }
.approach-statement { position: relative; z-index: 1; margin-top: 26px; padding-left: 20px; border-left: 2px solid var(--red); color: var(--text); font-size: 18px; line-height: 1.65; font-weight: 500; letter-spacing: -.2px; }
.approach-mark { width: 148px; height: auto; margin-top: 27px; opacity: .3; }
.principle { display: flex; gap: 24px; padding-block: 24px; border-bottom: 1px solid var(--principle-line); }
.principle:first-child { padding-top: 0; }
.principle:last-child { padding-bottom: 0; border-bottom: 0; }
.principle-dash { width: 21px; height: 2px; background: var(--red); flex-shrink: 0; margin-top: 16px; box-shadow: 0 0 7px rgba(240, 54, 76, .12); }
.principle h3 { font-size: 24px; line-height: 1.4; font-weight: 650; letter-spacing: -.6px; }
.principle p { font-size: 13px; color: var(--text); margin-top: 6px; line-height: 1.8; }
.contact-section { background: var(--surface); padding-block: 65px; }
.contact-panel { position: relative; display: grid; grid-template-columns: 1.1fr 1fr; gap: 100px; border: 1px solid var(--line); background: var(--page); padding: 45px 48px; }
.contact-panel::before { position: absolute; content: ''; width: 3px; left: -2px; top: 45px; height: 80px; background: var(--red); }
.contact-intro h2 { font-size: 42px; }
.contact-intro > p:last-child { color: var(--muted); font-size: 13px; line-height: 1.9; margin-top: 20px; }
.contact-details { align-self: center; }
.contact-label { font: 9px/1.5 'Courier New', monospace; letter-spacing: 1.3px; color: var(--muted); margin-bottom: 18px; }
.contact-item { padding-block: 15px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 5px 15px; font-size: 12px; }
.contact-item > span { color: var(--text); }
.contact-item strong { font-weight: 500; color: var(--muted); }
.contact-item a { color: var(--blue); font-weight: 600; }
.contact-item a:hover { text-decoration: underline; }
.contact-placeholder-note { font-size: 10px; color: var(--muted); margin-top: 10px; }
.site-footer { border-top: 1px solid var(--line); }
.footer-inner { display: flex; align-items: center; gap: 30px; min-height: 101px; }
.footer-brand { gap: 9px; }
.footer-brand .brand-symbol { width: 35px; }
.footer-brand .brand-name { font-size: 24px; letter-spacing: -1.3px; }
.footer-inner > p { margin-left: auto; color: var(--muted); font-size: 11px; }
.footer-inner > span { color: var(--muted); font-size: 10px; margin-left: 50px; }

@media (min-width: 1500px) {
  .hero-layout { min-height: 645px; }
  .hero-visual { width: calc(100% + 120px); margin-left: -30px; }
}
@media (max-width: 1199px) {
  .container { width: calc(100% - 72px); }
  .header-inner { gap: 24px; }
  .brand-symbol { width: 48px; }
  .brand-name { font-size: 30px; }
  .brand-caption { letter-spacing: 2.5px; font-size: 7px; }
  .navigation { gap: 24px; }
  .header-contact { margin-left: 0; gap: 12px; }
  .hero-layout { min-height: 575px; grid-template-columns: 1.12fr 1fr; }
  h1 { font-size: clamp(42px, 4.7vw, 57px); }
  .hero-directions { font-size: 20px; gap: 11px; }
  .hero-description { max-width: 390px; font-size: 14px; }
  .button { padding-inline: 16px; gap: 18px; }
  .hero-visual { margin-left: -20px; width: calc(100% + 80px); }
  .hero-baseline { gap: 30px; }
  .hero-baseline ul { gap: 30px; }
  .hero-baseline li { font-size: 15px; }
  .technology-row { grid-template-columns: .9fr 1.25fr; gap: 12px 35px; }
  .technology-name { grid-row: span 2; gap: 18px; }
  .technology-meta { justify-self: start; grid-column: 2; }
  .approach-layout { gap: 65px; grid-template-columns: .85fr 1.15fr; }
  .principle h3 { font-size: 22px; }
  .contact-panel { gap: 55px; padding: 40px; }
}
@media (max-width: 900px) {
  .container { width: calc(100% - 56px); }
  .header-inner { min-height: 90px; flex-wrap: wrap; justify-content: space-between; gap: 18px; padding-block: 20px; }
  .navigation { order: 3; flex-basis: 100%; margin-left: 0; gap: 28px; padding-top: 3px; }
  .navigation a { font-size: 12px; }
  .hero-layout { grid-template-columns: 1fr; gap: 0; }
  .hero-copy { padding-block: 45px 0; }
  h1 { font-size: clamp(48px, 7vw, 65px); }
  .hero-title-block::before { left: -16px; }
  .hero-directions { font-size: 24px; margin-top: 20px; }
  .hero-description { max-width: 510px; font-size: 15px; }
  .hero-visual { width: 100%; margin: -16px auto 0; max-width: 720px; padding-top: 0; }
  .hero-art { aspect-ratio: 3/2; }
  .hero-visual figcaption { margin: -15px 0 27px; }
  .corner-top { right: 5px; top: 25px; }
  .corner-bottom { left: 5px; bottom: 55px; }
  .hero-baseline { gap: 18px; flex-wrap: wrap; padding-block: 22px; }
  .baseline-label { flex-basis: 100%; }
  .hero-baseline ul { gap: 30px; }
  .baseline-end { font-size: 8px; }
  .section-space { padding-block: 60px; }
  .section-heading { gap: 25px; }
  h2 { font-size: 40px; }
  .section-intro { font-size: 12px; }
  .technology-name h3 { font-size: 23px; }
  .technology-row > p { font-size: 12px; }
  .scope-line { flex-direction: column; align-items: flex-start; gap: 14px; }
  .approach-layout { gap: 45px; grid-template-columns: .8fr 1fr; }
  .approach-intro h2 { font-size: 46px; }
  .approach-statement { font-size: 16px; padding-left: 15px; }
  .principle { gap: 15px; padding-block: 20px; }
  .principle-dash { width: 14px; margin-top: 12px; }
  .principle h3 { font-size: 18px; }
  .principle p { font-size: 12px; }
  .contact-panel { gap: 35px; padding: 32px; }
  .contact-intro h2 { font-size: 36px; }
  .contact-intro > p:last-child { font-size: 12px; }
  .contact-intro > p:last-child br { display: none; }
  .contact-item { flex-direction: column; font-size: 11px; }
  .footer-inner { gap: 20px; }
  .footer-inner > span { margin-left: 10px; }
  .footer-inner > p { font-size: 10px; }
}
@media (max-width: 620px) {
  .container { width: calc(100% - 40px); }
  .header-inner { gap: 16px; padding-block: 18px; }
  .brand { gap: 9px; }
  .brand-symbol { width: 43px; }
  .brand-name { font-size: 28px; letter-spacing: -1.5px; }
  .brand-caption { font-size: 6px; letter-spacing: 2.4px; margin-top: 4px; }
  .header-contact { gap: 8px; padding-block: 7px; font-size: 10px; }
  .header-contact .icon { width: 15px; height: 15px; }
  .navigation { padding-top: 4px; gap: 18px; }
  .theme-toggle { width: 30px; height: 30px; margin-left: auto; padding: 5px; }
  .navigation a { font-size: 11px; }
  .hero-copy { padding-top: 33px; }
  .eyebrow { font-size: 8px; letter-spacing: 1px; gap: 7px; }
  .hero-title-block { margin-top: 25px; }
  .hero-title-block::before { width: 2px; left: -11px; }
  h1 { font-size: clamp(31px, 8.8vw, 53px); line-height: 1.06; letter-spacing: -.45px; }
  .hero-directions { font-size: 18px; margin-top: 19px; gap: 10px; }
  .hero-directions i { width: 4px; height: 4px; }
  .hero-description { font-size: 13px; margin-top: 21px; line-height: 1.85; max-width: 440px; }
  .hero-actions { margin-top: 24px; flex-wrap: wrap; gap: 10px; }
  .button { min-height: 46px; font-size: 11px; padding: 12px 14px; gap: 16px; }
  .button .icon { width: 18px; height: 18px; }
  .button-secondary { gap: 10px; }
  .hero-note { font-size: 10px; margin-top: 22px; }
  .hero-visual { width: calc(100% + 20px); margin: 0 -10px; }
  .hero-visual figcaption { font-size: 8px; letter-spacing: 0; margin: -2px 0 20px; gap: 5px; }
  .corner-top { width: 17px; height: 17px; right: 12px; top: 19px; }
  .corner-bottom { width: 17px; height: 17px; left: 11px; bottom: 42px; }
  .hero-baseline { gap: 15px; padding-block: 20px; }
  .baseline-label { font-size: 8px; }
  .hero-baseline ul { flex-wrap: wrap; gap: 14px 24px; }
  .hero-baseline li { font-size: 13px; gap: 7px; }
  .baseline-end { display: none; }
  .section-space { padding-block: 44px; }
  .section-heading { flex-direction: column; align-items: flex-start; gap: 20px; margin-bottom: 26px; }
  .section-kicker { font-size: 8px; letter-spacing: 1.4px; gap: 9px; }
  .section-kicker > span { padding-right: 9px; font-size: 9px; }
  h2 { font-size: 36px; margin-top: 17px; }
  .section-intro { font-size: 13px; max-width: 420px; }
  .section-intro br { display: none; }
  .technology-row { grid-template-columns: 1fr; gap: 13px; padding-block: 23px; }
  .technology-name { grid-row: auto; gap: 15px; }
  .technology-name h3 { font-size: 24px; }
  .tech-icon { width: 26px; height: 26px; }
  .technology-row > p { font-size: 13px; padding-left: 41px; }
  .technology-meta { grid-column: 1; margin-left: 41px; font-size: 7px; }
  .scope-line { padding-top: 22px; gap: 16px; font-size: 10px; }
  .scope-line ul { gap: 12px 20px; }
  .scope-line li { font-size: 10px; }
  .approach-layout { grid-template-columns: 1fr; gap: 29px; }
  .approach-intro h2 { font-size: 43px; }
  .approach-statement { font-size: 16px; line-height: 1.7; margin-top: 21px; }
  .approach-statement br:last-of-type { display: none; }
  .approach-mark { position: absolute; width: 95px; right: 0; top: 50px; margin: 0; opacity: .22; }
  .principle { gap: 17px; padding-block: 23px; }
  .principle:first-child { padding-top: 23px; border-top: 1px solid var(--principle-line); }
  .principle h3 { font-size: 19px; }
  .principle p { font-size: 13px; margin-top: 5px; }
  .principle-dash { width: 18px; }
  .contact-panel { grid-template-columns: 1fr; gap: 28px; padding: 27px 23px; }
  .contact-panel::before { top: 27px; height: 65px; }
  .contact-intro h2 { font-size: clamp(29px, 7.6vw, 38px); }
  .contact-intro > p:last-child { font-size: 12px; margin-top: 18px; }
  .contact-label { font-size: 8px; margin-bottom: 15px; }
  .contact-item { flex-direction: row; font-size: 11px; padding-block: 14px; }
  .contact-placeholder-note { font-size: 9px; }
  .footer-inner { min-height: 0; padding-block: 28px; flex-wrap: wrap; gap: 15px; }
  .footer-brand .brand-name { font-size: 23px; }
  .footer-brand .brand-symbol { width: 32px; }
  .footer-inner > p { flex-basis: 100%; margin: 0; font-size: 10px; }
  .footer-inner > span { font-size: 9px; margin: 0; }
}
@media (max-width: 359px) {
  .technologies h2 { font-size: 32px; }
  .brand-symbol { width: 34px; }
  .brand { gap: 6px; }
  .brand-name { font-size: 24px; }
  .brand-caption { font-size: 5px; letter-spacing: 2.1px; }
  .header-inner { column-gap: 9px; }
  .header-contact { font-size: 9px; gap: 6px; }
  .header-contact .icon { width: 13px; }
  .eyebrow { font-size: 7px; letter-spacing: .7px; }
  h1 { font-size: 30px; }
  .hero-directions { font-size: 16px; gap: 9px; }
  .hero-actions { gap: 10px; }
  .button { font-size: 10px; padding-inline: 11px; gap: 12px; }
  .hero-baseline li { font-size: 12px; }
  .hero-baseline ul { gap: 14px 17px; }
  .contact-item { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}