:root {
  color-scheme: dark;
  --color-bg: #05070d;
  --color-bg-soft: #090d16;
  --color-surface: rgba(14, 20, 33, 0.78);
  --color-surface-strong: #101827;
  --color-card: rgba(15, 23, 39, 0.74);
  --color-border: rgba(148, 163, 184, 0.18);
  --color-border-strong: rgba(125, 211, 252, 0.28);
  --color-text: #f7f9fc;
  --color-muted: #a8b3c5;
  --color-soft: #d7dee9;
  --color-accent: #3ba7ff;
  --color-accent-strong: #73c4ff;
  --color-accent-deep: #075985;
  --color-cyan: #67e8f9;
  --color-success: #7dd3a8;
  --shadow-soft: 0 24px 80px rgba(0, 0, 0, 0.38);
  --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.25);
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --container: 1180px;
  --header-height: 76px;
  --transition: 180ms ease;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  min-width: 320px;
  margin: 0;
  font-family: var(--font-sans);
  background:
    linear-gradient(135deg, rgba(59, 167, 255, 0.12) 0%, transparent 34%),
    linear-gradient(225deg, rgba(103, 232, 249, 0.07) 0%, transparent 28%),
    linear-gradient(180deg, #05070d 0%, #070a12 45%, #080b12 100%);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  content: "";
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 80%);
}

body::after {
  position: fixed;
  inset: auto 0 0;
  z-index: -1;
  height: 40vh;
  content: "";
  background: linear-gradient(180deg, transparent, rgba(3, 7, 18, 0.9));
  pointer-events: none;
}

.page-top {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

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

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

svg {
  display: block;
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.section {
  position: relative;
  padding: 112px 0;
}

.section--surface {
  background: linear-gradient(180deg, rgba(10, 15, 25, 0.46), rgba(5, 7, 13, 0));
  border-block: 1px solid rgba(148, 163, 184, 0.08);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 46px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow) {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--color-muted);
  font-size: 1.06rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--color-accent-strong);
  font-family: var(--font-mono);
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-heading .eyebrow {
  font-size: 1.18rem;
}

.eyebrow::before {
  width: 34px;
  height: 2px;
  content: "";
  background: currentColor;
}

.loader {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background: var(--color-bg);
  transition: opacity 420ms ease, visibility 420ms ease;
}

.loader.is-hidden {
  visibility: hidden;
  opacity: 0;
}

.loader__mark {
  width: 54px;
  height: 54px;
  border: 1px solid rgba(115, 196, 255, 0.26);
  border-top-color: var(--color-accent-strong);
  border-radius: 50%;
  animation: spin 780ms linear infinite;
  box-shadow: 0 0 40px rgba(59, 167, 255, 0.28);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 90;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-cyan));
  box-shadow: 0 0 18px rgba(59, 167, 255, 0.7);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  height: var(--header-height);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
  background: rgba(5, 7, 13, 0.72);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: var(--header-height);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text);
  font-weight: 750;
}

.nav__mark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid rgba(115, 196, 255, 0.26);
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59, 167, 255, 0.22), rgba(103, 232, 249, 0.08));
  color: var(--color-accent-strong);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  overflow: hidden;
}

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

.nav__links {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  margin: 0 0 0 auto;
  list-style: none;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 13px;
  border-radius: 999px;
  color: var(--color-muted);
  font-size: 0.94rem;
  font-weight: 650;
  transition: color var(--transition), background-color var(--transition), border-color var(--transition);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--color-text);
  background: rgba(148, 163, 184, 0.09);
}

.nav__link--cta {
  border: 1px solid rgba(115, 196, 255, 0.24);
  color: var(--color-accent-strong);
}

.language-switcher {
  display: inline-grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  padding: 4px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 999px;
  background: rgba(15, 23, 39, 0.52);
  backdrop-filter: blur(14px);
}

.language-switcher__button {
  min-width: 38px;
  min-height: 32px;
  padding: 0 9px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  transition: color var(--transition), background var(--transition), box-shadow var(--transition);
}

.language-switcher__button:hover,
.language-switcher__button.is-active {
  background: rgba(59, 167, 255, 0.16);
  color: var(--color-text);
}

.language-switcher__button.is-active {
  box-shadow: inset 0 0 0 1px rgba(115, 196, 255, 0.24);
}

.nav__toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 14px;
  background: rgba(15, 23, 39, 0.74);
  color: var(--color-text);
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  border-radius: 999px;
  background: currentColor;
}

.hero {
  display: flex;
  align-items: center;
  min-height: calc(100vh - var(--header-height));
  padding-top: 88px;
  overflow: hidden;
}

.hero__ambient {
  position: absolute;
  inset: 0 -18% auto auto;
  z-index: -1;
  width: 58vw;
  height: 72vh;
  background:
    linear-gradient(135deg, rgba(59, 167, 255, 0.16), transparent 42%),
    repeating-linear-gradient(90deg, rgba(115, 196, 255, 0.08) 0 1px, transparent 1px 52px);
  opacity: 0.42;
  transform: skewX(-12deg);
  animation: floatBackground 9s ease-in-out infinite alternate;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(360px, 0.82fr);
  gap: 68px;
  align-items: center;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(3.1rem, 7.2vw, 6.8rem);
  line-height: 0.94;
  letter-spacing: 0;
}

.hero__title {
  margin: 24px 0 0;
  color: var(--color-accent-strong);
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  font-weight: 760;
}

.hero__subtitle {
  max-width: 680px;
  margin: 20px 0 0;
  color: var(--color-soft);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 750;
  transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

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

.button--primary {
  background: linear-gradient(135deg, var(--color-accent), #87d5ff);
  color: #02111d;
  box-shadow: 0 18px 42px rgba(59, 167, 255, 0.28);
}

.button--primary:hover {
  box-shadow: 0 24px 58px rgba(59, 167, 255, 0.36);
}

.button--secondary {
  border-color: rgba(115, 196, 255, 0.32);
  background: rgba(59, 167, 255, 0.08);
  color: var(--color-text);
}

.button--ghost {
  border-color: rgba(148, 163, 184, 0.16);
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-muted);
}

.hero__metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 620px;
  margin: 42px 0 0;
}

.hero__metrics div {
  padding: 16px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 39, 0.42);
}

.hero__metrics dt {
  color: var(--color-text);
  font-size: 0.98rem;
  font-weight: 820;
}

.hero__metrics dd {
  margin: 8px 0 0;
  color: var(--color-muted);
  font-size: 0.92rem;
  font-weight: 650;
  line-height: 1.42;
}

.hero__visual {
  position: relative;
  min-height: 520px;
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.07), transparent 44%),
    rgba(15, 23, 39, 0.42);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.hero__visual::before {
  position: absolute;
  inset: 26px;
  content: "";
  border: 1px solid rgba(115, 196, 255, 0.16);
  border-radius: 22px;
}

.hero__visual::after {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(rgba(115, 196, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(115, 196, 255, 0.08) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at center, black, transparent 72%);
}

.visual-card,
.visual-node,
.visual-panel,
.visual-connector,
.visual-orbit {
  position: absolute;
  z-index: 2;
}

.visual-card--main {
  top: 92px;
  left: 52px;
  width: min(72%, 360px);
  border: 1px solid rgba(115, 196, 255, 0.3);
  border-radius: 20px;
  background:
    linear-gradient(145deg, rgba(20, 31, 51, 0.94), rgba(4, 8, 15, 0.82)),
    rgba(5, 7, 13, 0.84);
  box-shadow:
    0 30px 78px rgba(0, 0, 0, 0.36),
    0 0 42px rgba(59, 167, 255, 0.08);
  backdrop-filter: blur(18px);
  animation: floatSlow 6s ease-in-out infinite;
}

.visual-card--main::before {
  position: absolute;
  inset: 0;
  content: "";
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(115, 196, 255, 0.16), transparent 45%);
  pointer-events: none;
}

.visual-card__top {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 8px;
  padding: 16px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.visual-card__top span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.42);
}

.visual-card__top span:first-child {
  background: var(--color-accent);
}

.visual-card__body {
  position: relative;
  z-index: 1;
  padding: 22px 18px 28px;
}

.visual-card__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--color-soft);
  font-size: 0.76rem;
  font-weight: 800;
}

.visual-card__label::before {
  width: 8px;
  height: 8px;
  content: "";
  border-radius: 999px;
  background: var(--color-success);
  box-shadow: 0 0 18px rgba(125, 211, 168, 0.58);
}

.code-line {
  height: 12px;
  margin-top: 14px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(115, 196, 255, 0.82), rgba(115, 196, 255, 0.08));
}

.code-line--wide {
  width: 84%;
  margin-top: 0;
}

.code-line:not(.code-line--wide) {
  width: 66%;
}

.code-line--short {
  width: 42% !important;
}

.visual-card__flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 22px;
}

.visual-card__flow span {
  min-width: 0;
  padding: 8px 7px;
  border: 1px solid rgba(115, 196, 255, 0.14);
  border-radius: 12px;
  background: rgba(115, 196, 255, 0.08);
  color: var(--color-soft);
  font-size: 0.68rem;
  font-weight: 800;
  line-height: 1.1;
  text-align: center;
}

.visual-node {
  display: grid;
  width: 104px;
  height: 72px;
  place-items: center;
  border: 1px solid rgba(115, 196, 255, 0.34);
  border-radius: 20px;
  background:
    linear-gradient(145deg, rgba(18, 28, 46, 0.88), rgba(8, 13, 22, 0.74)),
    rgba(15, 23, 39, 0.76);
  color: var(--color-accent-strong);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  text-align: center;
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.26),
    0 0 34px rgba(59, 167, 255, 0.12);
  backdrop-filter: blur(14px);
}

.visual-node::before {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 7px;
  height: 7px;
  content: "";
  border-radius: 999px;
  background: var(--color-cyan);
  box-shadow: 0 0 18px rgba(103, 232, 249, 0.62);
  animation: nodeSignal 4.8s ease-in-out infinite;
}

.visual-node--one {
  right: 72px;
  top: 72px;
  animation: floatSlow 5.7s ease-in-out infinite reverse;
}

.visual-node--two {
  right: 38px;
  bottom: 122px;
  animation: floatSlow 6.4s ease-in-out infinite;
}

.visual-node--three {
  left: 86px;
  bottom: 74px;
  animation: floatSlow 7s ease-in-out infinite reverse;
}

.visual-panel {
  right: 74px;
  bottom: 212px;
  width: 238px;
  padding: 18px;
  border: 1px solid rgba(125, 211, 252, 0.24);
  border-radius: 18px;
  background:
    linear-gradient(145deg, rgba(9, 16, 29, 0.9), rgba(4, 8, 15, 0.78)),
    rgba(4, 8, 15, 0.76);
  box-shadow:
    0 24px 58px rgba(0, 0, 0, 0.3),
    0 0 38px rgba(59, 167, 255, 0.08);
  backdrop-filter: blur(16px);
}

.visual-panel__heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--color-soft);
  font-size: 0.74rem;
  font-weight: 800;
}

.visual-panel__status {
  flex: 0 0 auto;
  padding: 4px 8px;
  border: 1px solid rgba(125, 211, 168, 0.28);
  border-radius: 999px;
  background: rgba(125, 211, 168, 0.08);
  color: var(--color-success);
  font-size: 0.66rem;
}

.visual-panel__bar {
  width: 68%;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-success), rgba(125, 211, 168, 0.08));
}

.visual-panel__row {
  display: grid;
  grid-template-columns: 1fr 44px;
  gap: 12px;
  margin-top: 16px;
}

.visual-panel__row span {
  height: 9px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.2);
}

.visual-panel__row span:last-child {
  background: rgba(115, 196, 255, 0.3);
}

.visual-connector {
  z-index: 1;
  height: 1px;
  overflow: hidden;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, rgba(115, 196, 255, 0.5), transparent);
  transform-origin: left center;
}

.visual-connector::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(103, 232, 249, 0.85), transparent);
  transform: translateX(-100%);
  animation: dataPulse 4.8s ease-in-out infinite;
}

.visual-connector--one {
  top: 188px;
  left: 368px;
  width: 134px;
  transform: rotate(-18deg);
}

.visual-connector--two {
  right: 214px;
  bottom: 252px;
  width: 104px;
  transform: rotate(5deg);
}

.visual-connector--three {
  left: 166px;
  bottom: 114px;
  width: 150px;
  transform: rotate(-16deg);
}

.visual-orbit {
  inset: 72px;
  z-index: 1;
  border: 1px solid rgba(115, 196, 255, 0.13);
  border-radius: 50%;
  animation: orbitPause 38s linear infinite;
}

.visual-orbit::before {
  position: absolute;
  top: 8%;
  left: 72%;
  z-index: 1;
  width: 12px;
  height: 12px;
  content: "";
  border-radius: 50%;
  background: var(--color-cyan);
  box-shadow:
    0 0 18px rgba(103, 232, 249, 0.9),
    0 0 42px rgba(59, 167, 255, 0.46);
  animation: orbitDotPulse 38s ease-in-out infinite;
}

.visual-orbit::after {
  position: absolute;
  inset: -1px;
  content: "";
  border-radius: inherit;
  background: conic-gradient(from 18deg, transparent 0 68%, rgba(103, 232, 249, 0.42) 78%, transparent 91%);
  mask: radial-gradient(farthest-side, transparent calc(100% - 3px), black calc(100% - 1px));
  opacity: 0.72;
}

.feature-grid,
.services-grid,
.case-grid,
.skills-grid {
  display: grid;
  gap: 18px;
}

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

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

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

.case-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: -16px 0 28px;
}

.case-filter {
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 999px;
  background: rgba(15, 23, 39, 0.48);
  color: var(--color-muted);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 750;
  transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  backdrop-filter: blur(14px);
}

.case-filter:hover {
  border-color: var(--color-border-strong);
  color: var(--color-text);
  transform: translateY(-1px);
}

.case-filter.is-active {
  border-color: rgba(115, 196, 255, 0.34);
  background: rgba(59, 167, 255, 0.14);
  color: var(--color-accent-strong);
  box-shadow: 0 12px 34px rgba(59, 167, 255, 0.14);
}

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

.feature-card,
.service-card,
.case-card,
.skill-card,
.timeline-card,
.contact-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.025));
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.feature-card:hover,
.service-card:hover,
.case-card:hover,
.skill-card:hover,
.timeline-card:hover,
.contact-card:hover {
  border-color: var(--color-border-strong);
  background: linear-gradient(180deg, rgba(59, 167, 255, 0.09), rgba(255, 255, 255, 0.025));
  transform: translateY(-6px);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.34);
}

.feature-card,
.service-card,
.skill-card {
  padding: 24px;
}

.feature-card h3,
.service-card h3,
.skill-card h3,
.case-card h3,
.timeline-card h3 {
  margin: 0;
  color: var(--color-text);
  line-height: 1.18;
}

.feature-card p,
.service-card p,
.timeline-card p,
.contact-card p {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.card-icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin-bottom: 22px;
  place-items: center;
  border: 1px solid rgba(115, 196, 255, 0.2);
  border-radius: 15px;
  background: rgba(59, 167, 255, 0.1);
  color: var(--color-accent-strong);
}

.card-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.service-card {
  min-height: 218px;
}

.service-card h3::after {
  display: block;
  width: 38px;
  height: 2px;
  margin-top: 16px;
  content: "";
  background: linear-gradient(90deg, var(--color-accent), transparent);
}

.case-card {
  padding: 0;
  overflow: hidden;
}

.case-card__header {
  padding: 24px 24px 18px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  background: rgba(5, 7, 13, 0.28);
}

.case-card__client {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--color-accent-strong);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
}

.case-card dl {
  display: grid;
  gap: 18px;
  padding: 24px;
  margin: 0;
}

.case-card dt {
  color: var(--color-soft);
  font-weight: 780;
}

.case-card dd {
  margin: 4px 0 0;
  color: var(--color-muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 18px;
}

.tag-list span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: 999px;
  background: rgba(5, 7, 13, 0.35);
  color: var(--color-soft);
  font-size: 0.88rem;
  font-weight: 650;
}

.timeline {
  position: relative;
  display: grid;
  gap: 22px;
  max-width: 880px;
}

.timeline::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 14px;
  width: 1px;
  content: "";
  background: linear-gradient(180deg, var(--color-accent), rgba(148, 163, 184, 0.08));
}

.timeline-card {
  position: relative;
  margin-left: 44px;
  padding: 24px;
}

.timeline-card::before {
  position: absolute;
  top: 28px;
  left: -38px;
  width: 12px;
  height: 12px;
  content: "";
  border: 4px solid var(--color-bg);
  border-radius: 50%;
  background: var(--color-accent-strong);
  box-shadow: 0 0 0 1px rgba(115, 196, 255, 0.4), 0 0 26px rgba(115, 196, 255, 0.44);
}

.timeline-card__date {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--color-accent-strong);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.timeline-card__company {
  color: var(--color-soft) !important;
  font-weight: 750;
}

.contact-section {
  padding-bottom: 126px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.72fr);
  gap: 48px;
  align-items: start;
}

.contact-card {
  padding: 28px;
  background: rgba(15, 23, 39, 0.64);
  backdrop-filter: blur(18px);
}

.contact-card__item {
  display: grid;
  gap: 4px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.11);
}

.contact-card__item:first-child {
  padding-top: 0;
}

.contact-card__item span {
  color: var(--color-muted);
  font-size: 0.88rem;
}

.contact-card__item a,
.contact-card__item strong {
  color: var(--color-text);
  font-size: 1.04rem;
  word-break: break-word;
}

.contact-card__item a:hover {
  color: var(--color-accent-strong);
}

.contact-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  background: rgba(5, 7, 13, 0.56);
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 86px;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.site-footer a {
  color: var(--color-accent-strong);
  font-weight: 750;
}

.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 70;
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid rgba(115, 196, 255, 0.24);
  border-radius: 16px;
  background: rgba(15, 23, 39, 0.76);
  color: var(--color-accent-strong);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition), background var(--transition);
  backdrop-filter: blur(16px);
}

.back-to-top.is-visible {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  background: rgba(59, 167, 255, 0.14);
}

.back-to-top svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 82px;
  z-index: 75;
  max-width: min(320px, calc(100vw - 28px));
  padding: 12px 16px;
  border: 1px solid rgba(115, 196, 255, 0.26);
  border-radius: 14px;
  background: rgba(15, 23, 39, 0.9);
  color: var(--color-text);
  box-shadow: var(--shadow-card);
  font-size: 0.92rem;
  font-weight: 700;
  opacity: 0;
  transform: translateY(10px);
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  backdrop-filter: blur(16px);
}

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

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 620ms ease, transform 620ms ease;
}

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

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes floatBackground {
  from {
    transform: translate3d(0, 0, 0) skewX(-12deg);
  }
  to {
    transform: translate3d(-36px, 24px, 0) skewX(-12deg);
  }
}

@keyframes floatSlow {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

@keyframes rotate {
  to {
    transform: rotate(360deg);
  }
}

@keyframes orbitPause {
  0%,
  8% {
    transform: rotate(0deg);
  }
  31%,
  39% {
    transform: rotate(118deg);
  }
  62%,
  70% {
    transform: rotate(238deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes orbitDotPulse {
  0%,
  8%,
  31%,
  39%,
  62%,
  70% {
    transform: scale(1.28);
  }
  18%,
  50%,
  84% {
    transform: scale(0.92);
  }
}

@keyframes dataPulse {
  0% {
    opacity: 0;
    transform: translateX(-100%);
  }
  28%,
  62% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateX(100%);
  }
}

@keyframes nodeSignal {
  0%,
  100% {
    opacity: 0.42;
    transform: scale(0.82);
  }
  45% {
    opacity: 1;
    transform: scale(1.12);
  }
}

@media (max-width: 1100px) {
  .hero__grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    min-height: 460px;
  }

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

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

@media (max-width: 860px) {
  :root {
    --header-height: 68px;
  }

  .container {
    width: min(100% - 28px, var(--container));
  }

  .section {
    padding: 84px 0;
  }

  .nav__toggle {
    display: block;
  }

  .nav__links {
    position: absolute;
    top: calc(var(--header-height) + 10px);
    right: 14px;
    left: 14px;
    display: grid;
    gap: 6px;
    padding: 14px;
    border: 1px solid rgba(148, 163, 184, 0.16);
    border-radius: 18px;
    background: rgba(8, 12, 20, 0.94);
    box-shadow: var(--shadow-card);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity var(--transition), transform var(--transition);
    backdrop-filter: blur(18px);
    margin-left: 0;
  }

  .nav__links.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav__link {
    justify-content: center;
  }

  .language-switcher {
    margin-left: auto;
  }

  .hero {
    min-height: auto;
    padding-top: 76px;
  }

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

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

  .case-filters {
    gap: 8px;
  }
}

@media (max-width: 640px) {
  .section-heading h2 {
    font-size: clamp(1.9rem, 12vw, 2.6rem);
  }

  .hero h1 {
    font-size: clamp(2.8rem, 15vw, 4.1rem);
  }

  .hero__actions,
  .contact-card__actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .case-filter {
    flex: 1 1 calc(50% - 8px);
    padding-inline: 10px;
  }

  .feature-grid,
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    min-height: 400px;
    border-radius: 22px;
  }

  .visual-card--main {
    top: 70px;
    left: 26px;
    width: 78%;
  }

  .visual-panel {
    right: 28px;
    bottom: 126px;
    width: 198px;
    padding: 14px;
  }

  .visual-panel__heading {
    gap: 8px;
    font-size: 0.66rem;
  }

  .visual-card__flow {
    display: none;
  }

  .visual-node {
    width: 82px;
    height: 58px;
    border-radius: 18px;
    font-size: 0.64rem;
  }

  .visual-node::before {
    top: 9px;
    right: 9px;
  }

  .visual-connector {
    display: none;
  }

  .visual-node--one {
    right: 34px;
    top: 50px;
  }

  .visual-node--two {
    right: 26px;
    bottom: 54px;
  }

  .visual-node--three {
    left: 34px;
    bottom: 38px;
  }

  .site-footer__inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }

  .back-to-top {
    right: 14px;
    bottom: 14px;
  }

  .toast {
    right: 14px;
    bottom: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}
:root[data-theme="light"] {
  color-scheme: light;
  --color-bg: #f7f9fc;
  --color-bg-soft: #eef3f8;
  --color-surface: rgba(255, 255, 255, 0.78);
  --color-surface-strong: #ffffff;
  --color-card: rgba(255, 255, 255, 0.82);
  --color-border: rgba(15, 23, 42, 0.12);
  --color-border-strong: rgba(14, 116, 144, 0.3);
  --color-text: #0f172a;
  --color-muted: #526173;
  --color-soft: #263447;
  --color-accent: #0f7ad6;
  --color-accent-strong: #075da8;
  --color-accent-deep: #0f4c81;
  --color-cyan: #0891b2;
  --color-success: #168658;
  --shadow-soft: 0 24px 70px rgba(15, 23, 42, 0.14);
  --shadow-card: 0 18px 46px rgba(15, 23, 42, 0.1);
}

:root[data-theme="light"] body {
  background:
    linear-gradient(135deg, rgba(15, 122, 214, 0.1) 0%, transparent 34%),
    linear-gradient(225deg, rgba(8, 145, 178, 0.08) 0%, transparent 28%),
    linear-gradient(180deg, #f7f9fc 0%, #eef3f8 48%, #ffffff 100%);
}

:root[data-theme="light"] body::before {
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.045) 1px, transparent 1px);
}

:root[data-theme="light"] body::after {
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.9));
}

:root[data-theme="light"] .site-header,
:root[data-theme="light"] .nav__links,
:root[data-theme="light"] .language-switcher,
:root[data-theme="light"] .theme-toggle,
:root[data-theme="light"] .nav__toggle,
:root[data-theme="light"] .contact-card,
:root[data-theme="light"] .toast,
:root[data-theme="light"] .back-to-top {
  background: rgba(255, 255, 255, 0.78);
}

:root[data-theme="light"] .feature-card,
:root[data-theme="light"] .service-card,
:root[data-theme="light"] .case-card,
:root[data-theme="light"] .skill-card,
:root[data-theme="light"] .timeline-card,
:root[data-theme="light"] .contact-card,
:root[data-theme="light"] .hero__metrics div,
:root[data-theme="light"] .tag-list span {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(248, 250, 252, 0.7));
}

:root[data-theme="light"] .case-filter {
  border-color: rgba(15, 23, 42, 0.12);
  background: rgba(255, 255, 255, 0.74);
}

:root[data-theme="light"] .case-filter.is-active {
  border-color: rgba(15, 122, 214, 0.26);
  background: rgba(15, 122, 214, 0.1);
  color: var(--color-accent-strong);
  box-shadow: 0 12px 30px rgba(15, 122, 214, 0.12);
}

:root[data-theme="light"] .visual-card--main,
:root[data-theme="light"] .visual-node,
:root[data-theme="light"] .visual-panel {
  background: rgba(255, 255, 255, 0.78);
}

:root[data-theme="light"] .visual-card--main {
  border-color: rgba(15, 122, 214, 0.22);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(239, 246, 255, 0.82)),
    rgba(255, 255, 255, 0.86);
  box-shadow:
    0 28px 70px rgba(15, 23, 42, 0.14),
    0 0 38px rgba(15, 122, 214, 0.1);
}

:root[data-theme="light"] .visual-node,
:root[data-theme="light"] .visual-panel {
  border-color: rgba(15, 122, 214, 0.2);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(239, 246, 255, 0.78)),
    rgba(255, 255, 255, 0.82);
  box-shadow:
    0 18px 48px rgba(15, 23, 42, 0.1),
    0 0 28px rgba(15, 122, 214, 0.08);
}

:root[data-theme="light"] .visual-connector {
  background: linear-gradient(90deg, transparent, rgba(15, 122, 214, 0.42), transparent);
}

:root[data-theme="light"] .visual-card__flow span {
  background: rgba(15, 122, 214, 0.07);
}

:root[data-theme="light"] .hero__visual {
  background:
    linear-gradient(135deg, rgba(15, 122, 214, 0.1), transparent 44%),
    rgba(255, 255, 255, 0.54);
}

:root[data-theme="light"] .button--primary {
  border-color: rgba(7, 93, 168, 0.28);
  background:
    linear-gradient(135deg, #075da8 0%, #0f7ad6 52%, #12a4d9 100%);
  color: #ffffff;
  box-shadow:
    0 18px 42px rgba(15, 122, 214, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

:root[data-theme="light"] .button--primary:hover {
  box-shadow:
    0 24px 58px rgba(15, 122, 214, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.theme-toggle {
  display: inline-grid;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 999px;
  background: rgba(15, 23, 39, 0.52);
  color: var(--color-accent-strong);
  cursor: pointer;
  transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition);
  backdrop-filter: blur(14px);
}

.theme-toggle:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-1px);
}

.theme-toggle__icon {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.9;
}

.theme-toggle__icon--moon,
:root[data-theme="light"] .theme-toggle__icon--sun {
  display: none;
}

:root[data-theme="light"] .theme-toggle__icon--moon {
  display: block;
}
@media (max-width: 1240px) and (min-width: 861px) {
  .nav.container {
    width: min(100% - 24px, var(--container));
  }

  .nav {
    gap: 10px;
  }

  .nav__brand {
    gap: 10px;
  }

  .nav__brand span:last-child {
    max-width: 122px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .nav__links {
    gap: 3px;
  }

  .nav__link {
    min-height: 38px;
    padding: 0 9px;
    font-size: 0.88rem;
  }

  .language-switcher__button {
    min-width: 34px;
    padding: 0 7px;
  }

  .theme-toggle {
    flex-basis: 40px;
    width: 40px;
    height: 40px;
  }
}