:root {
  --rt-arctic-1: #F0F8FF;
  --rt-arctic-2: #E6F2FF;
  --rt-white: #FFFFFF;
  --rt-deep-blue: #1A237E;
  --rt-soft-blue: #3949AB;
  --rt-cyan: #00BCD4;
  --rt-sky: #29B6F6;
  --rt-border-cyan: #81D4FA;
  --rt-deco-cyan: #B3E5FC;
  --rt-pale-cyan: #E1F5FE;
  --rt-mono: "IBM Plex Mono", "Fira Code", monospace;
  --rt-display: "Fira Code", "JetBrains Mono", monospace;
  --rt-tech: "JetBrains Mono", monospace;
  --rt-shadow: 0 8px 24px rgba(26, 35, 126, 0.10);
  --rt-shadow-hard: 8px 8px 0 var(--rt-deep-blue);
  --rt-shadow-card: 0 12px 32px rgba(26, 35, 126, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
}

html, body {
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, var(--rt-arctic-1) 0%, var(--rt-arctic-2) 100%);
  color: var(--rt-deep-blue);
  font-family: var(--rt-mono);
  font-size: 16px;
  line-height: 1.7;
  scroll-behavior: smooth;
}

strong, p, span, a, li, h1, h2, h3, h4, h5, h6, button, label {
  color: inherit;
}

a {
  color: var(--rt-cyan);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--rt-deep-blue);
}

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

h1, h2, h3, h4 {
  font-family: var(--rt-display);
  color: var(--rt-deep-blue);
  margin: 0 0 0.6em 0;
  line-height: 1.15;
}

h1 {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -0.01em;
  word-spacing: 0.08em;
}

h2 {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 600;
  letter-spacing: -0.005em;
}

h3 {
  font-size: clamp(18px, 2vw, 24px);
  font-family: var(--rt-mono);
  font-weight: 600;
}

h4 {
  font-size: 18px;
  font-family: var(--rt-mono);
  font-weight: 600;
}

p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--rt-deep-blue);
}

.caption-tech {
  font-family: var(--rt-tech);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--rt-soft-blue);
}

.container-wide {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

section {
  position: relative;
  padding: 80px 0;
  z-index: 1;
}

section.compact {
  padding: 48px 0;
}

section.air-top {
  padding-top: 140px;
}


.rt-top-bar {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 2px solid var(--rt-cyan);
  backdrop-filter: blur(10px);
}

.rt-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px 12px 0;
  gap: 24px;
  max-width: 1480px;
  margin: 0 auto;
}

.rt-logo-block {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.rt-logo-mark {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--rt-cyan), var(--rt-sky));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--rt-white);
  font-family: var(--rt-display);
  font-weight: 700;
  font-size: 22px;
  box-shadow: 4px 4px 0 var(--rt-deep-blue);
  position: relative;
}

.rt-logo-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px dashed rgba(255, 255, 255, 0.5);
}

.rt-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.rt-logo-domain {
  font-family: var(--rt-tech);
  font-size: 11px;
  color: var(--rt-soft-blue);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.rt-logo-name {
  font-family: var(--rt-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--rt-deep-blue);
  letter-spacing: -0.01em;
}

.rt-logo-sub {
  font-family: var(--rt-tech);
  font-size: 10px;
  color: var(--rt-cyan);
  letter-spacing: 0.12em;
}

.rt-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.rt-nav a {
  font-family: var(--rt-mono);
  font-size: 14px;
  color: var(--rt-deep-blue);
  padding: 12px 16px;
  border-radius: 0;
  transition: background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.rt-nav a:hover,
.rt-nav a.rt-active {
  background: var(--rt-cyan);
  color: var(--rt-white);
}

.rt-cta-top {
  background: var(--rt-cyan);
  color: var(--rt-white) !important;
  padding: 14px 22px;
  font-family: var(--rt-display);
  font-weight: 600;
  font-size: 14px;
  box-shadow: 4px 4px 0 var(--rt-deep-blue);
  white-space: nowrap;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.rt-cta-top:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--rt-deep-blue);
  background: var(--rt-sky);
  color: var(--rt-white) !important;
}

.rt-burger {
  display: none;
  width: 44px;
  height: 44px;
  background: var(--rt-cyan);
  border: none;
  cursor: pointer;
  position: relative;
  box-shadow: 3px 3px 0 var(--rt-deep-blue);
  flex-direction: column;
}

.rt-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--rt-white);
  margin: 3px auto;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.rt-burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.rt-burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.rt-burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.rt-mobile-menu {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, var(--rt-arctic-1) 0%, var(--rt-pale-cyan) 100%);
  z-index: 150;
  display: none;
  flex-direction: column;
  padding: 100px 32px 40px;
  overflow-y: auto;
}

.rt-mobile-menu::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--rt-deco-cyan) 1px, transparent 1px),
    linear-gradient(90deg, var(--rt-deco-cyan) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.4;
  animation: rt-pulse 4s ease-in-out infinite;
  pointer-events: none;
}

.rt-mobile-menu.rt-open {
  display: flex;
}

@keyframes rt-pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

.rt-mobile-menu a {
  font-family: var(--rt-display);
  font-size: 22px;
  color: var(--rt-deep-blue);
  padding: 18px 0;
  border-bottom: 1px solid var(--rt-deco-cyan);
  position: relative;
  z-index: 2;
  opacity: 0;
  transform: translateY(-12px);
  animation: rt-slide-in 0.4s ease forwards;
}

.rt-mobile-menu.rt-open a:nth-child(1) { animation-delay: 0.06s; }
.rt-mobile-menu.rt-open a:nth-child(2) { animation-delay: 0.12s; }
.rt-mobile-menu.rt-open a:nth-child(3) { animation-delay: 0.18s; }
.rt-mobile-menu.rt-open a:nth-child(4) { animation-delay: 0.24s; }
.rt-mobile-menu.rt-open a:nth-child(5) { animation-delay: 0.30s; }
.rt-mobile-menu.rt-open a:nth-child(6) { animation-delay: 0.36s; }
.rt-mobile-menu.rt-open a:nth-child(7) { animation-delay: 0.42s; }

@keyframes rt-slide-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.rt-mobile-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 44px;
  height: 44px;
  background: var(--rt-deep-blue);
  color: var(--rt-white);
  border: none;
  font-size: 24px;
  cursor: pointer;
  z-index: 5;
}


.rt-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--rt-cyan);
  color: var(--rt-white);
  font-family: var(--rt-display);
  font-weight: 600;
  font-size: 16px;
  padding: 18px 36px;
  border: none;
  border-radius: 0;
  box-shadow: 8px 8px 0 var(--rt-deep-blue);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  white-space: nowrap;
  min-height: 56px;
  text-decoration: none;
}

.rt-btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 var(--rt-deep-blue);
  background: var(--rt-sky);
  color: var(--rt-white);
}

.rt-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--rt-white);
  color: var(--rt-deep-blue);
  font-family: var(--rt-display);
  font-weight: 600;
  font-size: 16px;
  padding: 18px 36px;
  border: 3px solid var(--rt-cyan);
  border-radius: 0;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  min-height: 56px;
  text-decoration: none;
}

.rt-btn-secondary:hover {
  background: var(--rt-cyan);
  color: var(--rt-white);
}

.rt-btn-small {
  padding: 12px 22px;
  font-size: 14px;
  box-shadow: 4px 4px 0 var(--rt-deep-blue);
  min-height: 44px;
}


.rt-hero {
  position: relative;
  min-height: calc(100vh - 80px);
  padding: 80px 0 60px;
  overflow: hidden;
}

.rt-hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.rt-hero-grid h1 {
  margin-bottom: 18px;
}

.rt-hero-sub {
  font-family: var(--rt-tech);
  font-size: 13px;
  color: var(--rt-soft-blue);
  letter-spacing: 0.06em;
  margin-bottom: 28px;
}

.rt-hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.rt-hero-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.rt-hero-tag {
  font-family: var(--rt-tech);
  font-size: 11px;
  color: var(--rt-deep-blue);
  padding: 8px 14px;
  background: var(--rt-white);
  border: 1px solid var(--rt-border-cyan);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.rt-hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--rt-white);
  border: 2px solid var(--rt-cyan);
  box-shadow: var(--rt-shadow-card);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.rt-hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--rt-deco-cyan) 1px, transparent 1px),
    linear-gradient(90deg, var(--rt-deco-cyan) 1px, transparent 1px);
  background-size: 30px 30px;
  opacity: 0.6;
  animation: rt-grid-shift 8s linear infinite;
}

@keyframes rt-grid-shift {
  to { background-position: 30px 30px; }
}

.rt-hero-visual-inner {
  position: relative;
  z-index: 2;
  width: 70%;
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, var(--rt-cyan), var(--rt-sky));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--rt-white);
  font-size: 96px;
  font-family: var(--rt-display);
  font-weight: 700;
  box-shadow: 12px 12px 0 var(--rt-deep-blue);
  transform: rotate(-4deg);
  transition: transform 0.5s ease;
}

.rt-hero-visual-inner:hover {
  transform: rotate(0deg) scale(1.05);
}

#rt-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.rt-compact-hero {
  padding: 60px 0 40px;
  background: linear-gradient(135deg, var(--rt-pale-cyan) 0%, var(--rt-white) 100%);
  border-bottom: 2px solid var(--rt-cyan);
  position: relative;
  overflow: hidden;
}

.rt-compact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--rt-deco-cyan) 1px, transparent 1px),
    linear-gradient(90deg, var(--rt-deco-cyan) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.4;
}

.rt-compact-hero h1 {
  position: relative;
  z-index: 2;
  font-size: clamp(32px, 4.5vw, 56px);
  margin-bottom: 12px;
}

.rt-compact-hero .caption-tech {
  position: relative;
  z-index: 2;
  margin-bottom: 8px;
}


.rt-section-head {
  margin-bottom: 48px;
  position: relative;
  z-index: 2;
}

.rt-section-head .caption-tech {
  margin-bottom: 12px;
  display: block;
}

.rt-section-head h2 {
  margin-bottom: 16px;
}

.rt-section-head p {
  max-width: 720px;
  color: var(--rt-soft-blue);
  font-size: 16px;
}


.rt-masonry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: auto;
  gap: 20px;
  position: relative;
  z-index: 2;
}

.rt-m-card {
  background: var(--rt-white);
  border: 2px solid transparent;
  padding: 28px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--rt-shadow);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 1;
  color: var(--rt-deep-blue);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
}

.rt-m-card:hover {
  z-index: 10;
  transform: scale(1.03);
  border-color: var(--rt-cyan);
  box-shadow: 0 20px 40px rgba(0, 188, 212, 0.25);
}

.rt-m-card .m-tag {
  font-family: var(--rt-tech);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--rt-cyan);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}

.rt-m-card .m-num {
  font-family: var(--rt-display);
  font-size: 48px;
  color: var(--rt-border-cyan);
  font-weight: 700;
  position: absolute;
  top: 16px;
  right: 24px;
  line-height: 1;
}

.rt-m-card .m-icon {
  font-size: 36px;
  color: var(--rt-cyan);
  margin-bottom: 12px;
}

.rt-m-card h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.rt-m-card p {
  font-size: 13px;
  color: var(--rt-soft-blue);
  margin: 0;
}

.rt-m-card .m-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--rt-deco-cyan);
  font-family: var(--rt-tech);
  font-size: 12px;
}

.rt-m-card .m-price {
  color: var(--rt-deep-blue);
  font-weight: 700;
}

.rt-m-card .m-link {
  color: var(--rt-cyan);
  font-weight: 600;
}

.rt-m-tall {
  grid-row: span 2;
}

.rt-m-wide {
  grid-column: span 2;
}


.rt-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
}

.rt-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
}

.rt-card {
  background: var(--rt-white);
  padding: 32px;
  border: 2px solid transparent;
  box-shadow: var(--rt-shadow);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  z-index: 1;
  color: var(--rt-deep-blue);
}

.rt-card:hover {
  z-index: 10;
  transform: scale(1.03);
  border-color: var(--rt-cyan);
}

.rt-card .card-num {
  font-family: var(--rt-display);
  font-size: 32px;
  color: var(--rt-cyan);
  font-weight: 700;
  margin-bottom: 8px;
}

.rt-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.rt-card p {
  font-size: 14px;
  color: var(--rt-soft-blue);
  margin: 0;
}


.rt-nodes {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  margin-top: 48px;
  position: relative;
  z-index: 2;
}

.rt-node {
  background: var(--rt-white);
  border: 2px solid var(--rt-cyan);
  padding: 24px;
  text-align: center;
  position: relative;
  z-index: 2;
  box-shadow: 6px 6px 0 var(--rt-deep-blue);
  transition: transform 0.25s ease;
}

.rt-node:hover {
  transform: translateY(-6px);
}

.rt-node .n-num {
  font-family: var(--rt-display);
  font-size: 36px;
  color: var(--rt-cyan);
  font-weight: 700;
  margin-bottom: 8px;
}

.rt-node h4 {
  font-size: 14px;
  color: var(--rt-deep-blue);
  margin-bottom: 8px;
}

.rt-node p {
  font-size: 12px;
  color: var(--rt-soft-blue);
  margin: 0;
}

.rt-node-line {
  display: none;
}


.rt-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.rt-step {
  background: var(--rt-white);
  padding: 32px;
  border-left: 6px solid var(--rt-cyan);
  position: relative;
  z-index: 2;
  box-shadow: var(--rt-shadow);
  color: var(--rt-deep-blue);
}

.rt-step .s-num {
  font-family: var(--rt-display);
  font-size: 48px;
  color: var(--rt-cyan);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 12px;
  display: block;
}

.rt-step h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.rt-step p {
  font-size: 14px;
  color: var(--rt-soft-blue);
  margin: 0;
}


.rt-cta-block {
  background: var(--rt-deep-blue);
  color: var(--rt-white);
  padding: 80px 48px;
  text-align: center;
  position: relative;
  z-index: 2;
  border: 4px solid var(--rt-cyan);
  overflow: hidden;
}

.rt-cta-block::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 188, 212, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 188, 212, 0.1) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.rt-cta-block > * {
  position: relative;
  z-index: 2;
}

.rt-cta-block h2 {
  color: var(--rt-white);
  margin-bottom: 16px;
}

.rt-cta-block p {
  color: var(--rt-border-cyan);
  font-size: 16px;
  max-width: 720px;
  margin: 0 auto 28px;
}

.rt-cta-block .rt-btn-primary {
  background: var(--rt-cyan);
}

.rt-cta-block .rt-btn-secondary {
  background: transparent;
  color: var(--rt-white);
  border-color: var(--rt-white);
}

.rt-cta-block .rt-btn-secondary:hover {
  background: var(--rt-cyan);
  color: var(--rt-white);
  border-color: var(--rt-cyan);
}


.rt-team {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.rt-team-card {
  background: var(--rt-white);
  box-shadow: var(--rt-shadow);
  transition: transform 0.25s ease;
  border: 2px solid transparent;
}

.rt-team-card:hover {
  transform: translateY(-6px);
  border-color: var(--rt-cyan);
}

.rt-team-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: var(--rt-pale-cyan);
  position: relative;
  overflow: hidden;
}

.rt-team-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.rt-team-body {
  padding: 20px;
}

.rt-team-body h4 {
  margin-bottom: 4px;
  font-size: 16px;
}

.rt-team-body .role {
  font-family: var(--rt-tech);
  font-size: 11px;
  color: var(--rt-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}

.rt-team-body p {
  font-size: 13px;
  color: var(--rt-soft-blue);
  margin: 0;
}


.rt-reviews {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.rt-review {
  background: var(--rt-white);
  padding: 32px;
  border: 2px solid var(--rt-border-cyan);
  position: relative;
  box-shadow: var(--rt-shadow);
  color: var(--rt-deep-blue);
  transition: transform 0.25s ease;
}

.rt-review:hover {
  transform: translateY(-4px);
  border-color: var(--rt-cyan);
}

.rt-review .q-mark {
  font-family: var(--rt-display);
  font-size: 64px;
  color: var(--rt-cyan);
  line-height: 0.6;
  margin-bottom: 16px;
  display: block;
}

.rt-review p {
  font-size: 14px;
  font-style: italic;
  color: var(--rt-deep-blue);
  margin-bottom: 20px;
}

.rt-review .reviewer {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px dashed var(--rt-deco-cyan);
}

.rt-review .rev-avatar {
  width: 48px;
  height: 48px;
  background: var(--rt-pale-cyan);
  border-radius: 0;
  overflow: hidden;
  flex-shrink: 0;
}

.rt-review .rev-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.rt-review .rev-info strong {
  font-size: 13px;
  display: block;
  color: var(--rt-deep-blue);
}

.rt-review .rev-info span {
  font-family: var(--rt-tech);
  font-size: 11px;
  color: var(--rt-soft-blue);
}


.rt-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.rt-stat {
  background: var(--rt-white);
  padding: 32px;
  text-align: center;
  box-shadow: var(--rt-shadow);
  border-bottom: 4px solid var(--rt-cyan);
}

.rt-stat .stat-num {
  font-family: var(--rt-display);
  font-size: 56px;
  color: var(--rt-cyan);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 8px;
}

.rt-stat .stat-label {
  font-family: var(--rt-tech);
  font-size: 12px;
  color: var(--rt-soft-blue);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}


.rt-form {
  background: var(--rt-white);
  padding: 40px;
  box-shadow: var(--rt-shadow-card);
  border: 2px solid var(--rt-border-cyan);
}

.rt-form .field {
  margin-bottom: 18px;
}

.rt-form label {
  display: block;
  font-family: var(--rt-tech);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--rt-deep-blue);
  margin-bottom: 6px;
  font-weight: 600;
}

.rt-form input,
.rt-form select,
.rt-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--rt-border-cyan);
  background: var(--rt-white);
  font-family: var(--rt-mono);
  font-size: 14px;
  color: var(--rt-deep-blue);
  border-radius: 0;
  transition: border-color 0.2s ease;
}

.rt-form input::placeholder,
.rt-form textarea::placeholder {
  color: var(--rt-soft-blue);
  opacity: 0.6;
}

.rt-form input:focus,
.rt-form select:focus,
.rt-form textarea:focus {
  outline: none;
  border-color: var(--rt-cyan);
  background: var(--rt-pale-cyan);
}

.rt-form textarea {
  min-height: 120px;
  resize: vertical;
}

.rt-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.rt-form-success {
  background: var(--rt-pale-cyan);
  border: 2px solid var(--rt-cyan);
  padding: 32px;
  text-align: center;
  color: var(--rt-deep-blue);
}

.rt-form-success h3 {
  color: var(--rt-cyan);
  margin-bottom: 12px;
}


.rt-faq {
  margin-top: 32px;
}

.rt-faq-item {
  background: var(--rt-white);
  margin-bottom: 12px;
  border: 2px solid var(--rt-border-cyan);
  box-shadow: var(--rt-shadow);
  transition: border-color 0.2s ease;
}

.rt-faq-item.rt-open {
  border-color: var(--rt-cyan);
}

.rt-faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--rt-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--rt-deep-blue);
}

.rt-faq-q .toggle {
  width: 32px;
  height: 32px;
  background: var(--rt-cyan);
  color: var(--rt-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.rt-faq-item.rt-open .toggle {
  transform: rotate(45deg);
  background: var(--rt-deep-blue);
}

.rt-faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--rt-soft-blue);
  font-size: 14px;
  line-height: 1.7;
}

.rt-faq-item.rt-open .rt-faq-a {
  max-height: 500px;
  padding: 0 24px 20px;
}


.rt-cases {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 40px;
}

.rt-case {
  background: var(--rt-white);
  box-shadow: var(--rt-shadow);
  border: 2px solid transparent;
  transition: all 0.25s ease;
  overflow: hidden;
}

.rt-case:hover {
  border-color: var(--rt-cyan);
  transform: translateY(-4px);
}

.rt-case-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--rt-pale-cyan);
  overflow: hidden;
}

.rt-case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.rt-case:hover .rt-case-img img {
  transform: scale(1.05);
}

.rt-case-body {
  padding: 24px;
  color: var(--rt-deep-blue);
}

.rt-case-body .case-tag {
  font-family: var(--rt-tech);
  font-size: 11px;
  color: var(--rt-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}

.rt-case-body h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.rt-case-body p {
  font-size: 14px;
  color: var(--rt-soft-blue);
  margin-bottom: 14px;
}

.rt-case-body ul {
  list-style: none;
  padding: 0;
  margin: 0 0 14px;
}

.rt-case-body ul li {
  font-size: 13px;
  color: var(--rt-deep-blue);
  padding: 4px 0 4px 20px;
  position: relative;
}

.rt-case-body ul li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--rt-cyan);
}


.rt-footer {
  background: var(--rt-deep-blue);
  color: var(--rt-white);
  padding: 80px 0 0;
  position: relative;
  z-index: 2;
}

.rt-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.rt-footer h5 {
  font-family: var(--rt-display);
  font-size: 14px;
  color: var(--rt-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.rt-footer-brand h4 {
  font-family: var(--rt-display);
  font-size: 22px;
  color: var(--rt-white);
  margin-bottom: 8px;
}

.rt-footer-brand .footer-domain {
  font-family: var(--rt-tech);
  font-size: 12px;
  color: var(--rt-border-cyan);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  display: block;
}

.rt-footer-brand p {
  font-size: 13px;
  color: var(--rt-border-cyan);
  margin: 0 0 16px;
}

.rt-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.rt-footer ul li {
  margin-bottom: 10px;
}

.rt-footer ul li a {
  color: var(--rt-border-cyan);
  font-size: 13px;
  transition: color 0.2s ease;
}

.rt-footer ul li a:hover {
  color: var(--rt-cyan);
}

.rt-footer .contact-line {
  font-size: 13px;
  color: var(--rt-border-cyan);
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.rt-footer .contact-line strong {
  color: var(--rt-white);
  font-family: var(--rt-tech);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 2px;
}

.rt-footer .address-block {
  font-style: normal;
  font-size: 13px;
  color: var(--rt-border-cyan);
  line-height: 1.6;
}

.rt-footer-bottom {
  border-top: 1px solid rgba(129, 212, 250, 0.2);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.rt-footer-bottom p {
  margin: 0;
  font-size: 12px;
  color: var(--rt-border-cyan);
}

.rt-footer-bottom a {
  color: var(--rt-border-cyan);
  font-size: 12px;
  margin-left: 14px;
}

.rt-footer-bottom a:hover {
  color: var(--rt-cyan);
}


.rt-cookie {
  position: fixed;
  bottom: 20px;
  left: 20px;
  max-width: 360px;
  background: var(--rt-white);
  border: 2px solid var(--rt-cyan);
  box-shadow: 0 12px 32px rgba(26, 35, 126, 0.2);
  padding: 20px;
  z-index: 300;
  color: var(--rt-deep-blue);
}

.rt-cookie h4 {
  font-family: var(--rt-display);
  font-size: 14px;
  color: var(--rt-deep-blue);
  margin-bottom: 8px;
}

.rt-cookie p {
  font-size: 12px;
  color: var(--rt-soft-blue);
  margin: 0 0 14px;
  line-height: 1.5;
}

.rt-cookie-buttons {
  display: flex;
  gap: 8px;
}

.rt-cookie-buttons button {
  flex: 1;
  padding: 10px;
  font-family: var(--rt-display);
  font-size: 12px;
  font-weight: 600;
  border: 2px solid var(--rt-cyan);
  cursor: pointer;
  border-radius: 0;
  background: var(--rt-white);
  color: var(--rt-deep-blue);
  transition: all 0.2s ease;
}

.rt-cookie-buttons button.primary {
  background: var(--rt-cyan);
  color: var(--rt-white);
}

.rt-cookie-buttons button:hover {
  background: var(--rt-deep-blue);
  color: var(--rt-white);
  border-color: var(--rt-deep-blue);
}


.rt-legal {
  padding: 60px 0 80px;
}

.rt-legal article {
  background: var(--rt-white);
  padding: 48px;
  box-shadow: var(--rt-shadow);
  border-left: 6px solid var(--rt-cyan);
  max-width: 920px;
  margin: 0 auto;
}

.rt-legal h2 {
  margin-top: 32px;
  font-size: 22px;
  padding-bottom: 8px;
  border-bottom: 2px dashed var(--rt-deco-cyan);
}

.rt-legal h2:first-child {
  margin-top: 0;
}

.rt-legal p, .rt-legal li {
  font-size: 14px;
  color: var(--rt-deep-blue);
  line-height: 1.8;
}

.rt-legal ul {
  padding-left: 24px;
}


.text-center { text-align: center; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-24 { margin-bottom: 24px; }
.bg-pale { background: var(--rt-pale-cyan); }


@media (max-width: 1100px) {
  .rt-nav { display: none; }
  .rt-cta-top { display: none; }
  .rt-burger { display: flex; align-items: center; justify-content: center; }
  .rt-hero-grid { grid-template-columns: 1fr; }
  .rt-hero-visual { max-width: 480px; margin: 0 auto; }
  .rt-masonry { grid-template-columns: repeat(2, 1fr); }
  .rt-m-wide { grid-column: span 1; }
  .rt-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .rt-grid-2 { grid-template-columns: 1fr; }
  .rt-team { grid-template-columns: repeat(2, 1fr); }
  .rt-reviews { grid-template-columns: 1fr; }
  .rt-stats { grid-template-columns: repeat(2, 1fr); }
  .rt-steps { grid-template-columns: 1fr; }
  .rt-nodes { grid-template-columns: repeat(3, 1fr); }
  .rt-cases { grid-template-columns: 1fr; }
  .rt-footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
  section { padding: 60px 0; }
  .container-wide { padding: 0 18px; }
  .rt-masonry { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .rt-m-tall { grid-row: auto; }
  .rt-m-wide { grid-column: auto; }
  .rt-grid-3 { grid-template-columns: 1fr; }
  .rt-grid-2 { grid-template-columns: 1fr; }
  .rt-team { grid-template-columns: 1fr; }
  .rt-stats { grid-template-columns: 1fr 1fr; }
  .rt-nodes { grid-template-columns: 1fr; }
  .rt-form-row { grid-template-columns: 1fr; }
  .rt-footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .rt-hero-cta { flex-direction: column; align-items: stretch; }
  .rt-hero-cta .rt-btn-primary, .rt-hero-cta .rt-btn-secondary { width: 100%; }
  .rt-cta-block { padding: 48px 24px; }
  .rt-legal article { padding: 28px 20px; }
  .rt-form { padding: 24px; }
  .rt-footer-bottom { flex-direction: column; text-align: center; }
  .rt-cookie {
    left: 10px;
    right: 10px;
    bottom: 10px;
    max-width: none;
  }
}