@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,500;0,9..144,700;1,9..144,300&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --rtn-bg-deep:    #0C1015;
  --rtn-bg-panel:   #141A22;
  --rtn-bg-surface: #1D2630;
  --rtn-bg-light:   #F2F0EB;
  --rtn-signal:     #27C97C;
  --rtn-text-dp:    #E8EAE8;
  --rtn-text-dm:    #8FA89A;
  --rtn-text-lp:    #12191F;
  --rtn-text-lm:    #4A6258;
  --rtn-amber:      #D97B2A;
  --rtn-border-d:   #253040;
  --rtn-border-l:   #C8CFC8;
  --rtn-nav-h:      64px;
  --rtn-radius:     4px;
  --rtn-container:  1240px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  background: var(--rtn-bg-deep);
  color: var(--rtn-text-dp);
  -webkit-font-smoothing: antialiased;
}

.rtn-page--light-top {
  background: var(--rtn-bg-light);
  color: var(--rtn-text-lp);
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }

.rtn-container {
  width: 100%;
  max-width: var(--rtn-container);
  margin-inline: auto;
  padding-inline: 40px;
}

.rtn-sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Fraunces', Georgia, serif;
  line-height: 1.2;
  font-weight: 500;
}

.rtn-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--rtn-signal);
  display: block;
  margin-bottom: 12px;
}

.rtn-page--light-top .rtn-eyebrow { color: var(--rtn-text-lm); }


.rtn-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 9000;
  height: var(--rtn-nav-h);
  background: var(--rtn-bg-deep);
  border-bottom: 1px solid var(--rtn-border-d);
  display: flex;
  align-items: center;
}

.rtn-nav__inner {
  display: flex;
  align-items: center;
  gap: 0;
  width: 100%;
  max-width: var(--rtn-container);
  margin-inline: auto;
  padding-inline: 40px;
}

.rtn-nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  margin-right: auto;
}

.rtn-nav__logo img { width: 100px; height: auto; }

.rtn-nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-right: 32px;
}

.rtn-nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--rtn-text-dm);
  transition: color 0.18s;
  white-space: nowrap;
}

.rtn-nav__links a:hover,
.rtn-nav__links a.rtn-nav__active {
  color: var(--rtn-text-dp);
}

.rtn-nav__cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  background: var(--rtn-signal);
  color: var(--rtn-bg-deep) !important;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--rtn-radius);
  white-space: nowrap;
  transition: opacity 0.18s;
}

.rtn-nav__cta:hover { opacity: 0.88; }

.rtn-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  margin-left: 12px;
  cursor: pointer;
}

.rtn-nav__hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--rtn-text-dp);
  border-radius: 2px;
  transition: transform 0.22s, opacity 0.22s;
}

.rtn-nav__hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.rtn-nav__hamburger.is-open span:nth-child(2) { opacity: 0; }
.rtn-nav__hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.rtn-nav__mobile {
  display: none;
  position: fixed;
  top: var(--rtn-nav-h);
  left: 0; right: 0;
  background: var(--rtn-bg-panel);
  border-bottom: 1px solid var(--rtn-border-d);
  padding: 20px 40px 24px;
  z-index: 8999;
  flex-direction: column;
  gap: 0;
}

.rtn-nav__mobile.is-open { display: flex; }

.rtn-nav__mobile a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  color: var(--rtn-text-dm);
  border-bottom: 1px solid var(--rtn-border-d);
  transition: color 0.15s;
}

.rtn-nav__mobile a:last-child { border-bottom: none; }
.rtn-nav__mobile a:hover { color: var(--rtn-text-dp); }
.rtn-nav__mobile .rtn-nav__cta {
  margin-top: 12px;
  text-align: center;
  justify-content: center;
}


main { padding-top: var(--rtn-nav-h); }


.rtn-hero {
  background: var(--rtn-bg-deep);
  padding: 80px 0 88px;
  overflow: hidden;
}

.rtn-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: var(--rtn-container);
  margin-inline: auto;
  padding-inline: 40px;
}

.rtn-hero__text { max-width: 580px; }

.rtn-hero__h1 {
  font-size: clamp(36px, 4.5vw, 58px);
  font-weight: 300;
  color: var(--rtn-text-dp);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.rtn-hero__h1 em {
  font-style: italic;
  color: var(--rtn-signal);
}

.rtn-hero__sub {
  font-size: 18px;
  color: var(--rtn-text-dm);
  margin-bottom: 36px;
  max-width: 480px;
  line-height: 1.7;
}

.rtn-hero__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.rtn-hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.rtn-hero__waveform {
  width: 100%;
  max-width: 520px;
  height: 280px;
}


.rtn-subhero {
  background: var(--rtn-bg-deep);
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--rtn-border-d);
}

.rtn-subhero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: var(--rtn-container);
  margin-inline: auto;
  padding-inline: 40px;
}

.rtn-subhero__text { max-width: 560px; }

.rtn-subhero__h1 {
  font-size: clamp(30px, 3.5vw, 46px);
  font-weight: 300;
  color: var(--rtn-text-dp);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.rtn-subhero__sub {
  font-size: 17px;
  color: var(--rtn-text-dm);
  max-width: 460px;
  line-height: 1.7;
}

.rtn-subhero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.rtn-subhero--centered {
  padding: 72px 0 64px;
}

.rtn-subhero--centered .rtn-subhero__inner-single {
  text-align: center;
  max-width: 700px;
  margin-inline: auto;
  padding-inline: 40px;
}

.rtn-subhero--centered .rtn-subhero__h1 {
  max-width: none;
  color: var(--rtn-text-dp);
}

.rtn-subhero--centered .rtn-subhero__sub {
  max-width: none;
  margin-inline: auto;
  color: var(--rtn-text-dm);
}

.rtn-subhero--light {
  background: var(--rtn-bg-light);
  border-bottom: 1px solid var(--rtn-border-l);
}

.rtn-subhero--light .rtn-subhero__h1 { color: var(--rtn-text-lp); }
.rtn-subhero--light .rtn-subhero__sub { color: var(--rtn-text-lm); }
.rtn-subhero--light .rtn-eyebrow { color: var(--rtn-text-lm); }


.rtn-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--rtn-radius);
  font-size: 14px;
  font-weight: 600;
  transition: opacity 0.18s, background 0.18s, color 0.18s;
  white-space: nowrap;
}

.rtn-btn--primary {
  background: var(--rtn-signal);
  color: var(--rtn-bg-deep);
}

.rtn-btn--primary:hover { opacity: 0.88; }

.rtn-btn--ghost {
  border: 1.5px solid var(--rtn-border-d);
  color: var(--rtn-text-dp);
  background: transparent;
}

.rtn-btn--ghost:hover {
  border-color: var(--rtn-text-dm);
  color: var(--rtn-text-dp);
}

.rtn-btn--ghost-light {
  border: 1.5px solid var(--rtn-border-l);
  color: var(--rtn-text-lp);
  background: transparent;
}

.rtn-btn--ghost-light:hover {
  border-color: var(--rtn-text-lm);
}

.rtn-btn--sm {
  padding: 7px 16px;
  font-size: 13px;
}

.rtn-btn--lg {
  padding: 14px 30px;
  font-size: 15px;
}


.rtn-section {
  padding: 80px 0;
}

.rtn-section--dark {
  background: var(--rtn-bg-deep);
}

.rtn-section--panel {
  background: var(--rtn-bg-panel);
}

.rtn-section--surface {
  background: var(--rtn-bg-surface);
}

.rtn-section--light {
  background: var(--rtn-bg-light);
}

.rtn-section--light .rtn-section__heading,
.rtn-section--light h2,
.rtn-section--light h3 { color: var(--rtn-text-lp); }

.rtn-section--light p,
.rtn-section--light li { color: var(--rtn-text-lm); }

.rtn-section--light .rtn-eyebrow { color: var(--rtn-text-lm); }

.rtn-section__header {
  margin-bottom: 56px;
}

.rtn-section__header--center {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: 56px;
}

.rtn-section__heading {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 300;
  color: var(--rtn-text-dp);
  margin-bottom: 12px;
}

.rtn-section__sub {
  font-size: 16px;
  color: var(--rtn-text-dm);
  line-height: 1.7;
}

.rtn-section--light .rtn-section__sub { color: var(--rtn-text-lm); }


.rtn-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.rtn-card {
  background: var(--rtn-bg-panel);
  border: 1px solid var(--rtn-border-d);
  border-radius: var(--rtn-radius);
  padding: 28px;
  transition: border-color 0.18s;
}

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

.rtn-card--light {
  background: #fff;
  border-color: var(--rtn-border-l);
}

.rtn-card--light:hover { border-color: #27C97C; }

.rtn-card__icon {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--rtn-bg-surface);
  border-radius: var(--rtn-radius);
  margin-bottom: 16px;
  color: var(--rtn-signal);
  font-size: 18px;
}

.rtn-card--light .rtn-card__icon {
  background: #f0f4f0;
}

.rtn-card__title {
  font-size: 17px;
  font-weight: 600;
  font-family: 'IBM Plex Sans', sans-serif;
  color: var(--rtn-text-dp);
  margin-bottom: 8px;
}

.rtn-card--light .rtn-card__title { color: var(--rtn-text-lp); }

.rtn-card__body {
  font-size: 14px;
  color: var(--rtn-text-dm);
  line-height: 1.65;
}

.rtn-card--light .rtn-card__body { color: var(--rtn-text-lm); }


.rtn-stat-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--rtn-border-d);
  border-radius: var(--rtn-radius);
  overflow: hidden;
}

.rtn-stat {
  padding: 28px 24px;
  border-right: 1px solid var(--rtn-border-d);
  text-align: center;
}

.rtn-stat:last-child { border-right: none; }

.rtn-stat__num {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 36px;
  font-weight: 300;
  color: var(--rtn-signal);
  display: block;
  line-height: 1.1;
  margin-bottom: 4px;
}

.rtn-stat__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rtn-text-dm);
}


.rtn-pipeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.rtn-pipeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(12.5% + 20px);
  right: calc(12.5% + 20px);
  height: 1px;
  background: var(--rtn-border-d);
}

.rtn-pipeline__step {
  text-align: center;
  padding: 0 16px;
  position: relative;
}

.rtn-pipeline__num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--rtn-bg-surface);
  border: 2px solid var(--rtn-signal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  font-weight: 500;
  color: var(--rtn-signal);
  margin: 0 auto 16px;
  position: relative;
  z-index: 1;
}

.rtn-pipeline__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--rtn-text-dp);
  margin-bottom: 6px;
}

.rtn-pipeline__desc {
  font-size: 13px;
  color: var(--rtn-text-dm);
  line-height: 1.55;
}


.rtn-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--rtn-border-d);
  margin-bottom: 40px;
  overflow-x: auto;
  scrollbar-width: none;
}

.rtn-tabs::-webkit-scrollbar { display: none; }

.rtn-tab-btn {
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--rtn-text-dm);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.18s, border-color 0.18s;
  margin-bottom: -1px;
}

.rtn-tab-btn:hover { color: var(--rtn-text-dp); }
.rtn-tab-btn.is-active {
  color: var(--rtn-signal);
  border-bottom-color: var(--rtn-signal);
}

.rtn-tab-panel { display: none; }
.rtn-tab-panel.is-active { display: block; }

.rtn-tab-panel__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  min-width: 0;
}

.rtn-tab-panel__copy { min-width: 0; }
.rtn-tab-panel__visual { min-width: 0; }

.rtn-tab-panel__copy h3 {
  font-size: 24px;
  font-weight: 300;
  color: var(--rtn-text-dp);
  margin-bottom: 12px;
}

.rtn-tab-panel__copy p {
  font-size: 15px;
  color: var(--rtn-text-dm);
  line-height: 1.7;
  margin-bottom: 16px;
}

.rtn-tab-panel__copy ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rtn-tab-panel__copy li {
  font-size: 14px;
  color: var(--rtn-text-dm);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.rtn-tab-panel__copy li::before {
  content: '-';
  color: var(--rtn-signal);
  flex-shrink: 0;
}

.rtn-tab-panel__visual {
  background: var(--rtn-bg-surface);
  border: 1px solid var(--rtn-border-d);
  border-radius: var(--rtn-radius);
  padding: 24px;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.rtn-tab-panel__visual svg {
  width: 100%;
  height: auto;
  max-width: 340px;
}


pre, code {
  font-family: 'IBM Plex Mono', monospace;
}

.rtn-code-block {
  background: var(--rtn-bg-panel);
  border: 1px solid var(--rtn-border-d);
  border-radius: var(--rtn-radius);
  overflow: hidden;
  max-width: 100%;
  width: 100%;
}

.rtn-code-block__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--rtn-bg-surface);
  border-bottom: 1px solid var(--rtn-border-d);
}

.rtn-code-block__lang {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--rtn-text-dm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.rtn-code-block__copy-btn {
  font-size: 12px;
  color: var(--rtn-text-dm);
  cursor: pointer;
  padding: 3px 8px;
  border: 1px solid var(--rtn-border-d);
  border-radius: 3px;
  transition: color 0.15s;
}

.rtn-code-block__copy-btn:hover { color: var(--rtn-text-dp); }

.rtn-code-block pre {
  padding: 20px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  font-size: 13px;
  line-height: 1.6;
  color: var(--rtn-text-dp);
}

.rtn-code-block pre .kw { color: #7EC8E3; }
.rtn-code-block pre .fn { color: #27C97C; }
.rtn-code-block pre .str { color: #D98C6E; }
.rtn-code-block pre .cm { color: #7A8FA0; }
.rtn-code-block pre .num { color: #D97B2A; }
.rtn-code-block pre .ty { color: #B8A8E8; }


.rtn-docs-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
  max-width: var(--rtn-container);
  margin-inline: auto;
  padding-inline: 40px;
}

.rtn-docs-sidebar {
  position: sticky;
  top: calc(var(--rtn-nav-h) + 24px);
  max-height: calc(100vh - var(--rtn-nav-h) - 48px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--rtn-border-d) transparent;
}

.rtn-docs-sidebar__section {
  margin-bottom: 28px;
}

.rtn-docs-sidebar__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rtn-text-dm);
  margin-bottom: 8px;
  display: block;
}

.rtn-docs-sidebar__links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rtn-docs-sidebar__links a {
  font-size: 13px;
  color: var(--rtn-text-dm);
  padding: 5px 8px;
  border-radius: 3px;
  display: block;
  transition: color 0.15s, background 0.15s;
}

.rtn-docs-sidebar__links a:hover { color: var(--rtn-text-dp); }
.rtn-docs-sidebar__links a.is-active {
  color: var(--rtn-signal);
  background: rgba(39, 201, 124, 0.08);
}

.rtn-docs-content {
  min-width: 0;
  padding-bottom: 80px;
  overflow-x: hidden;
}

.rtn-docs-content h2 {
  font-size: 26px;
  font-weight: 300;
  margin-bottom: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--rtn-border-d);
  color: var(--rtn-text-dp);
}

.rtn-docs-content h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.rtn-docs-content h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 10px;
  margin-top: 32px;
  color: var(--rtn-text-dp);
}

.rtn-docs-content p {
  font-size: 15px;
  color: var(--rtn-text-dm);
  line-height: 1.75;
  margin-bottom: 16px;
}

.rtn-docs-content ul {
  margin-bottom: 16px;
  padding-left: 0;
}

.rtn-docs-content li {
  font-size: 15px;
  color: var(--rtn-text-dm);
  padding: 4px 0 4px 20px;
  position: relative;
}

.rtn-docs-content li::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--rtn-signal);
  position: absolute;
  left: 6px;
  top: 12px;
}

.rtn-docs-content code {
  font-size: 13px;
  background: var(--rtn-bg-surface);
  border: 1px solid var(--rtn-border-d);
  border-radius: 3px;
  padding: 1px 5px;
  color: var(--rtn-signal);
}

.rtn-docs-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-bottom: 24px;
}

.rtn-docs-content thead th {
  text-align: left;
  padding: 10px 14px;
  background: var(--rtn-bg-surface);
  color: var(--rtn-text-dm);
  font-weight: 500;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--rtn-border-d);
}

.rtn-docs-content tbody td {
  padding: 10px 14px;
  color: var(--rtn-text-dm);
  border-bottom: 1px solid var(--rtn-border-d);
  vertical-align: top;
}

.rtn-docs-content tbody tr:hover td { background: rgba(39, 201, 124, 0.04); }

.rtn-docs-content .rtn-code-block { margin-bottom: 20px; }

.rtn-page--dark-top .rtn-docs-content h2 {
  color: var(--rtn-text-dp);
  border-top-color: var(--rtn-border-d);
}

.rtn-page--dark-top .rtn-docs-content h3 { color: var(--rtn-text-dp); }
.rtn-page--dark-top .rtn-docs-content p,
.rtn-page--dark-top .rtn-docs-content li { color: var(--rtn-text-dm); }

.rtn-page--light-top .rtn-docs-content h2 {
  color: var(--rtn-text-lp);
  border-top-color: var(--rtn-border-l);
}

.rtn-page--light-top .rtn-docs-content h3 { color: var(--rtn-text-lp); }
.rtn-page--light-top .rtn-docs-content p,
.rtn-page--light-top .rtn-docs-content li { color: var(--rtn-text-lm); }

.rtn-page--light-top .rtn-docs-content code {
  background: #e8ece8;
  border-color: var(--rtn-border-l);
  color: var(--rtn-text-lp);
}

.rtn-page--light-top .rtn-docs-content thead th {
  background: #e8ece8;
  color: var(--rtn-text-lm);
  border-bottom-color: var(--rtn-border-l);
}

.rtn-page--light-top .rtn-docs-content tbody td {
  color: var(--rtn-text-lm);
  border-bottom-color: var(--rtn-border-l);
}


.rtn-team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.rtn-team-card {
  background: #fff;
  border: 1px solid var(--rtn-border-l);
  border-radius: var(--rtn-radius);
  overflow: hidden;
}

.rtn-team-card__avatar {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #e0e4e0;
  overflow: hidden;
}

.rtn-team-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.rtn-team-card__initials {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Fraunces', Georgia, serif;
  font-size: 48px;
  font-weight: 300;
  color: var(--rtn-text-lm);
  background: #dde4dc;
}

.rtn-team-card__body {
  padding: 20px 20px 24px;
}

.rtn-team-card__name {
  font-size: 17px;
  font-weight: 600;
  font-family: 'IBM Plex Sans', sans-serif;
  color: var(--rtn-text-lp);
  margin-bottom: 2px;
}

.rtn-team-card__role {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--rtn-text-lm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  display: block;
}

.rtn-team-card__bio {
  font-size: 14px;
  color: var(--rtn-text-lm);
  line-height: 1.6;
}


.rtn-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 32px;
}

.rtn-timeline::before {
  content: '';
  position: absolute;
  left: 7px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--rtn-border-d);
}

.rtn-timeline__item {
  position: relative;
  padding-bottom: 36px;
}

.rtn-timeline__item:last-child { padding-bottom: 0; }

.rtn-timeline__dot {
  position: absolute;
  left: -32px; top: 8px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--rtn-bg-deep);
  border: 2px solid var(--rtn-signal);
  z-index: 1;
}

.rtn-timeline__item--active .rtn-timeline__dot {
  background: var(--rtn-signal);
}

.rtn-timeline__date {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--rtn-signal);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
  display: block;
}

.rtn-timeline__title {
  font-size: 16px;
  font-weight: 600;
  color: var(--rtn-text-dp);
  margin-bottom: 4px;
}

.rtn-timeline__body {
  font-size: 14px;
  color: var(--rtn-text-dm);
  line-height: 1.6;
}

.rtn-section--light .rtn-timeline::before {
  background: var(--rtn-border-l);
}

.rtn-section--light .rtn-timeline__dot {
  background: var(--rtn-bg-light);
  border-color: var(--rtn-signal);
}

.rtn-section--light .rtn-timeline__item--active .rtn-timeline__dot {
  background: var(--rtn-signal);
}

.rtn-section--light .rtn-timeline__date {
  color: var(--rtn-text-lm);
}

.rtn-section--light .rtn-timeline__title {
  color: var(--rtn-text-lp);
}

.rtn-section--light .rtn-timeline__body {
  color: var(--rtn-text-lm);
}


.rtn-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.rtn-blog-card {
  background: var(--rtn-bg-panel);
  border: 1px solid var(--rtn-border-d);
  border-radius: var(--rtn-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.18s;
}

.rtn-blog-card:hover { border-color: var(--rtn-signal); }

.rtn-blog-card__cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--rtn-bg-surface);
}

.rtn-blog-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.36s;
}

.rtn-blog-card:hover .rtn-blog-card__cover img { transform: scale(1.04); }

.rtn-blog-card__body {
  padding: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.rtn-blog-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.rtn-blog-card__cat {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--rtn-signal);
}

.rtn-blog-card__date {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--rtn-text-dm);
}

.rtn-blog-card__title {
  font-size: 15px;
  font-weight: 500;
  font-family: 'IBM Plex Sans', sans-serif;
  color: var(--rtn-text-dp);
  margin-bottom: 8px;
  line-height: 1.45;
  flex: 1;
}

.rtn-blog-card__excerpt {
  font-size: 13px;
  color: var(--rtn-text-dm);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rtn-blog-card__author {
  font-size: 12px;
  color: var(--rtn-text-dm);
  margin-top: auto;
}


/* ---- Featured blog card (top-wide hero card on blog index) ---- */
.rtn-blog-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--rtn-bg-panel);
  border: 1px solid var(--rtn-border-d);
  border-radius: var(--rtn-radius);
  overflow: hidden;
  margin-bottom: 48px;
  transition: border-color 0.18s;
}

.rtn-blog-featured:hover { border-color: var(--rtn-signal); }

.rtn-blog-featured__cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--rtn-bg-surface);
}

.rtn-blog-featured__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
  display: block;
}

.rtn-blog-featured:hover .rtn-blog-featured__cover img { transform: scale(1.04); }

.rtn-blog-featured__body {
  padding: 40px 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.rtn-blog-featured__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--rtn-signal);
  background: rgba(39, 201, 124, 0.1);
  padding: 3px 8px;
  border-radius: 3px;
  display: inline-block;
  margin-bottom: 20px;
}

.rtn-blog-featured__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.rtn-blog-featured__cat {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--rtn-signal);
}

.rtn-blog-featured__date {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--rtn-text-dm);
}

.rtn-blog-featured__title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(18px, 2vw, 26px);
  font-weight: 700;
  color: var(--rtn-text-dp);
  line-height: 1.3;
  margin-bottom: 14px;
}

.rtn-blog-featured__excerpt {
  font-size: 14px;
  color: var(--rtn-text-dm);
  line-height: 1.65;
  margin-bottom: 24px;
}

.rtn-blog-featured__author {
  font-size: 13px;
  color: var(--rtn-text-dm);
  margin-bottom: 24px;
}

.rtn-blog-featured__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--rtn-signal);
  transition: opacity 0.15s;
  margin-top: auto;
}

.rtn-blog-featured__link:hover { opacity: 0.75; }

@media (max-width: 900px) {
  .rtn-blog-featured {
    grid-template-columns: 1fr;
  }
  .rtn-blog-featured__cover {
    aspect-ratio: 16 / 7;
  }
  .rtn-blog-featured__body {
    padding: 28px 24px;
  }
}

@media (max-width: 640px) {
  .rtn-blog-featured__body { padding: 20px 16px; }
  .rtn-blog-featured__title { font-size: 18px; }
}
/* ---- end featured blog card ---- */

.rtn-article-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--rtn-signal);
  transition: opacity 0.15s;
  margin-bottom: 24px;
}

.rtn-article-back:hover { opacity: 0.75; }

.rtn-article-hero {
  background: var(--rtn-bg-panel);
  border-bottom: 1px solid var(--rtn-border-d);
  padding: 48px 0 0;
}

.rtn-article-hero__inner {
  max-width: var(--rtn-container);
  margin-inline: auto;
  padding-inline: 40px;
}

.rtn-article-hero__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.rtn-article-hero__cat {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--rtn-signal);
  background: rgba(39, 201, 124, 0.1);
  padding: 3px 8px;
  border-radius: 3px;
}

.rtn-article-hero__date {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--rtn-text-dm);
}

.rtn-article-hero__h1 {
  font-size: clamp(24px, 3.2vw, 42px);
  font-weight: 300;
  color: var(--rtn-text-dp);
  margin-bottom: 16px;
  max-width: 780px;
  line-height: 1.25;
}

.rtn-article-hero__byline {
  font-size: 14px;
  color: var(--rtn-text-dm);
  margin-bottom: 32px;
}

.rtn-article-cover {
  width: 100%;
  max-width: var(--rtn-container);
  margin-inline: auto;
  padding-inline: 40px;
  margin-bottom: 0;
}

.rtn-article-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--rtn-radius) var(--rtn-radius) 0 0;
  display: block;
  max-width: 100%;
}

.rtn-article-body {
  background: var(--rtn-bg-deep);
  padding: 56px 0 80px;
}

.rtn-article-content {
  max-width: 720px;
  margin-inline: auto;
  padding-inline: 40px;
}

.rtn-article-content h2 {
  font-size: 24px;
  font-weight: 300;
  color: var(--rtn-text-dp);
  margin: 40px 0 14px;
  padding-top: 24px;
  border-top: 1px solid var(--rtn-border-d);
}

.rtn-article-content h3 {
  font-size: 18px;
  font-weight: 500;
  color: var(--rtn-text-dp);
  margin: 28px 0 10px;
}

.rtn-article-content p {
  font-size: 16px;
  color: var(--rtn-text-dm);
  line-height: 1.78;
  margin-bottom: 18px;
}

.rtn-article-content ul, .rtn-article-content ol {
  margin-bottom: 18px;
  padding-left: 20px;
}

.rtn-article-content li {
  font-size: 15px;
  color: var(--rtn-text-dm);
  line-height: 1.7;
  margin-bottom: 6px;
  list-style: disc;
}

.rtn-article-content code {
  font-size: 13px;
  background: var(--rtn-bg-surface);
  border: 1px solid var(--rtn-border-d);
  border-radius: 3px;
  padding: 1px 5px;
  color: var(--rtn-signal);
}

.rtn-article-content .rtn-code-block {
  margin: 24px 0;
  max-width: 720px;
  margin-inline: auto;
  padding-inline: 0;
}

.rtn-article-related {
  max-width: 720px;
  margin-inline: auto;
  padding-inline: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--rtn-border-d);
}

.rtn-article-related h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--rtn-text-dp);
  margin-bottom: 16px;
}

.rtn-article-related__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rtn-article-related__list a {
  font-size: 14px;
  color: var(--rtn-signal);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: opacity 0.15s;
}

.rtn-article-related__list a:hover { opacity: 0.75; }


.rtn-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.rtn-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.rtn-form__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rtn-form__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--rtn-text-dm);
}

.rtn-page--light-top .rtn-form__label { color: var(--rtn-text-lm); }

.rtn-form__input,
.rtn-form__textarea,
.rtn-form__select {
  padding: 10px 14px;
  background: var(--rtn-bg-surface);
  border: 1px solid var(--rtn-border-d);
  border-radius: var(--rtn-radius);
  color: var(--rtn-text-dp);
  font-size: 14px;
  transition: border-color 0.18s;
  width: 100%;
}

.rtn-form__input:focus,
.rtn-form__textarea:focus,
.rtn-form__select:focus {
  outline: none;
  border-color: var(--rtn-signal);
}

.rtn-form__textarea { min-height: 120px; resize: vertical; }

.rtn-page--light-top .rtn-form__input,
.rtn-page--light-top .rtn-form__textarea,
.rtn-page--light-top .rtn-form__select {
  background: #fff;
  border-color: var(--rtn-border-l);
  color: var(--rtn-text-lp);
}

.rtn-form__input::placeholder,
.rtn-form__textarea::placeholder {
  color: var(--rtn-text-dm);
  opacity: 0.6;
}

.rtn-page--light-top .rtn-form__input::placeholder,
.rtn-page--light-top .rtn-form__textarea::placeholder {
  color: var(--rtn-text-lm);
}


.rtn-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}


.rtn-cta-band {
  background: var(--rtn-bg-panel);
  border-top: 1px solid var(--rtn-border-d);
  border-bottom: 1px solid var(--rtn-border-d);
  padding: 64px 0;
  text-align: center;
}

.rtn-cta-band h2 {
  font-size: clamp(24px, 2.8vw, 36px);
  font-weight: 300;
  color: var(--rtn-text-dp);
  margin-bottom: 12px;
}

.rtn-cta-band p {
  font-size: 16px;
  color: var(--rtn-text-dm);
  margin-bottom: 28px;
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: 28px;
}

.rtn-cta-band__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}


.rtn-footer {
  background: var(--rtn-bg-panel);
  border-top: 1px solid var(--rtn-border-d);
  padding: 56px 0 32px;
}

.rtn-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.rtn-footer__brand-name {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 18px;
  font-weight: 500;
  color: var(--rtn-text-dp);
  margin-bottom: 8px;
}

.rtn-footer__brand-desc {
  font-size: 13px;
  color: var(--rtn-text-dm);
  line-height: 1.65;
  margin-bottom: 16px;
  max-width: 300px;
}

.rtn-footer__address {
  font-size: 12px;
  color: var(--rtn-text-dm);
  line-height: 1.7;
  font-style: normal;
}

.rtn-footer__col-title {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--rtn-text-dm);
  margin-bottom: 14px;
  display: block;
}

.rtn-footer__links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rtn-footer__links a {
  font-size: 13px;
  color: var(--rtn-text-dm);
  transition: color 0.15s;
}

.rtn-footer__links a:hover { color: var(--rtn-text-dp); }

.rtn-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--rtn-border-d);
  flex-wrap: wrap;
  gap: 12px;
}

.rtn-footer__copy {
  font-size: 12px;
  color: var(--rtn-text-dm);
}

.rtn-footer__legal {
  display: flex;
  align-items: center;
  gap: 20px;
}

.rtn-footer__legal a {
  font-size: 12px;
  color: var(--rtn-text-dm);
  transition: color 0.15s;
}

.rtn-footer__legal a:hover { color: var(--rtn-text-dp); }


.rtn-auth-page {
  min-height: 100vh;
  background: var(--rtn-bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.rtn-auth-card {
  background: var(--rtn-bg-panel);
  border: 1px solid var(--rtn-border-d);
  border-radius: 6px;
  padding: 44px 48px;
  width: 100%;
  max-width: 440px;
}

.rtn-auth-card__logo {
  display: flex;
  justify-content: center;
  margin-bottom: 32px;
}

.rtn-auth-card__heading {
  font-size: 22px;
  font-weight: 300;
  color: var(--rtn-text-dp);
  text-align: center;
  margin-bottom: 6px;
}

.rtn-auth-card__sub {
  font-size: 14px;
  color: var(--rtn-text-dm);
  text-align: center;
  margin-bottom: 28px;
  line-height: 1.55;
}

.rtn-auth-card .rtn-form {
  gap: 16px;
}

.rtn-auth-card .rtn-btn--primary {
  width: 100%;
  justify-content: center;
  padding: 12px;
  font-size: 15px;
  margin-top: 4px;
}

.rtn-auth-card__links {
  margin-top: 20px;
  text-align: center;
  font-size: 13px;
  color: var(--rtn-text-dm);
}

.rtn-auth-card__links a {
  color: var(--rtn-signal);
  transition: opacity 0.15s;
}

.rtn-auth-card__links a:hover { opacity: 0.75; }

.rtn-auth-card__legal {
  margin-top: 16px;
  text-align: center;
  font-size: 12px;
  color: var(--rtn-text-dm);
}

.rtn-auth-card__legal a {
  color: var(--rtn-text-dm);
  text-decoration: underline;
}


.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 9999;
  background: var(--rtn-bg-panel);
  border-top: 1px solid var(--rtn-border-d);
  padding: 16px 0;
}

.cookie-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--rtn-container);
  margin-inline: auto;
  padding-inline: 40px;
  flex-wrap: wrap;
}

.cookie-banner__text {
  font-size: 13px;
  color: var(--rtn-text-dm);
  line-height: 1.55;
  flex: 1;
  min-width: 220px;
}

.cookie-banner__text a {
  color: var(--rtn-signal);
  text-decoration: underline;
}

.cookie-banner__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.cookie-banner__btn {
  padding: 8px 18px;
  border-radius: var(--rtn-radius);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1.5px solid var(--rtn-border-d);
  background: transparent;
  color: var(--rtn-text-dp);
  transition: opacity 0.15s;
}

.cookie-banner__btn:hover { opacity: 0.8; }

.cookie-banner__btn--primary {
  background: var(--rtn-signal);
  color: var(--rtn-bg-deep);
  border-color: var(--rtn-signal);
}

.cookie-banner__btn--secondary {
  background: transparent;
  color: var(--rtn-text-dm);
  border-color: var(--rtn-border-d);
}


.rtn-fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.rtn-fade-in.is-visible {
  opacity: 1;
  transform: none;
}


.rtn-platform-diagram {
  width: 100%;
  max-width: 520px;
  height: 320px;
}

.rtn-faq {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--rtn-border-d);
  border-radius: var(--rtn-radius);
  overflow: hidden;
}

.rtn-faq__item {
  border-bottom: 1px solid var(--rtn-border-d);
}

.rtn-faq__item:last-child { border-bottom: none; }

.rtn-faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  background: transparent;
  width: 100%;
  text-align: left;
  color: var(--rtn-text-dp);
  font-size: 15px;
  font-weight: 500;
  transition: background 0.15s;
}

.rtn-faq__question:hover { background: var(--rtn-bg-surface); }

.rtn-faq__question i {
  color: var(--rtn-text-dm);
  font-size: 14px;
  transition: transform 0.25s;
  flex-shrink: 0;
}

.rtn-faq__item.is-open .rtn-faq__question i { transform: rotate(180deg); }

.rtn-faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.rtn-faq__item.is-open .rtn-faq__answer {
  max-height: 600px;
}

.rtn-faq__answer-inner {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--rtn-text-dm);
  line-height: 1.7;
}


.rtn-use-case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.rtn-use-case-card {
  background: var(--rtn-bg-panel);
  border: 1px solid var(--rtn-border-d);
  border-radius: var(--rtn-radius);
  padding: 28px 28px 24px;
}

.rtn-use-case-card__num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--rtn-signal);
  margin-bottom: 12px;
  letter-spacing: 0.08em;
  display: block;
}

.rtn-use-case-card h3 {
  font-size: 18px;
  font-weight: 400;
  color: var(--rtn-text-dp);
  margin-bottom: 8px;
}

.rtn-use-case-card p {
  font-size: 14px;
  color: var(--rtn-text-dm);
  line-height: 1.65;
  margin-bottom: 12px;
}

.rtn-use-case-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rtn-use-case-card li {
  font-size: 13px;
  color: var(--rtn-text-dm);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.rtn-use-case-card li::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--rtn-signal);
  flex-shrink: 0;
  margin-top: 6px;
}


.rtn-notice {
  padding: 12px 16px;
  border-radius: var(--rtn-radius);
  font-size: 13px;
  line-height: 1.6;
}

.rtn-notice--amber {
  background: rgba(217, 123, 42, 0.1);
  border: 1px solid rgba(217, 123, 42, 0.3);
  color: var(--rtn-amber);
}

.rtn-notice--info {
  background: rgba(39, 201, 124, 0.06);
  border: 1px solid rgba(39, 201, 124, 0.2);
  color: var(--rtn-text-dp);
}


.rtn-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--rtn-text-dm);
  margin-bottom: 20px;
}

.rtn-breadcrumb a { color: var(--rtn-text-dm); transition: color 0.15s; }
.rtn-breadcrumb a:hover { color: var(--rtn-text-dp); }
.rtn-breadcrumb__sep { color: var(--rtn-border-d); }


@media (max-width: 1024px) {
  .rtn-hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .rtn-hero__text { max-width: 100%; }
  .rtn-hero__visual { order: -1; }
  .rtn-hero__waveform { max-width: 400px; height: 200px; }

  .rtn-subhero__inner { grid-template-columns: 1fr; gap: 40px; }
  .rtn-subhero__visual { order: -1; }

  .rtn-pipeline { grid-template-columns: 1fr 1fr; }
  .rtn-pipeline::before { display: none; }

  .rtn-docs-layout { grid-template-columns: 200px 1fr; gap: 32px; }

  .rtn-tab-panel__grid { grid-template-columns: 1fr; gap: 24px; }

  .rtn-footer__grid { grid-template-columns: 1fr 1fr; }
  .rtn-footer__grid > *:first-child { grid-column: 1 / -1; }

  .rtn-stat-band { grid-template-columns: 1fr 1fr; }
  .rtn-stat:nth-child(2) { border-right: none; }
  .rtn-stat:nth-child(3) { border-right: 1px solid var(--rtn-border-d); border-top: 1px solid var(--rtn-border-d); }
  .rtn-stat:nth-child(4) { border-right: none; border-top: 1px solid var(--rtn-border-d); }
}

@media (max-width: 768px) {
  :root { --rtn-container: 100%; }

  .rtn-container { padding-inline: 20px; }

  .rtn-nav__inner { padding-inline: 20px; }
  .rtn-nav__links { display: none; }
  .rtn-nav__cta { display: none; }
  .rtn-nav__hamburger { display: flex; }
  .rtn-nav__mobile { padding-inline: 20px; }

  .rtn-hero { padding: 48px 0 56px; }
  .rtn-hero__inner { padding-inline: 20px; }
  .rtn-hero__h1 { font-size: 32px; }
  .rtn-hero__waveform { max-width: 100%; height: 180px; }

  .rtn-subhero__inner { padding-inline: 20px; }
  .rtn-subhero--centered .rtn-subhero__inner-single { padding-inline: 20px; }

  .rtn-section { padding: 56px 0; }
  .rtn-section__header { margin-bottom: 36px; }
  .rtn-section__header--center { margin-bottom: 36px; }

  .rtn-card-grid { grid-template-columns: 1fr; gap: 16px; }
  .rtn-pipeline { grid-template-columns: 1fr; }
  .rtn-blog-grid { grid-template-columns: 1fr; gap: 20px; }
  .rtn-team-grid { grid-template-columns: 1fr; gap: 24px; }
  .rtn-use-case-grid { grid-template-columns: 1fr; gap: 20px; }
  .rtn-contact-grid { grid-template-columns: 1fr; gap: 40px; }

  .rtn-docs-layout {
    grid-template-columns: 1fr;
  }

  .rtn-docs-sidebar {
    position: static;
    max-height: none;
    border: 1px solid var(--rtn-border-d);
    border-radius: var(--rtn-radius);
    padding: 16px;
    margin-bottom: 32px;
  }

  .rtn-stat-band { grid-template-columns: 1fr 1fr; }

  .rtn-form__row { grid-template-columns: 1fr; }

  .rtn-footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .rtn-footer__grid > *:first-child { grid-column: auto; }
  .rtn-footer__bottom { flex-direction: column; align-items: flex-start; gap: 8px; }

  .rtn-auth-card { padding: 32px 24px; }
  .rtn-auth-card { max-width: 100%; }

  .rtn-timeline { padding-left: 24px; }

  .rtn-article-content { padding-inline: 20px; }
  .rtn-article-hero__inner { padding-inline: 20px; }
  .rtn-article-cover { padding-inline: 20px; }
  .rtn-article-related { padding-inline: 20px; }

  .cookie-banner__inner { padding-inline: 20px; flex-direction: column; align-items: flex-start; gap: 14px; }
  .cookie-banner__actions { width: 100%; }
}

@media (max-width: 480px) {
  .rtn-hero__h1 { font-size: 28px; }
  .rtn-hero__sub { font-size: 15px; }
  .rtn-hero__actions { flex-direction: column; align-items: flex-start; }

  .rtn-blog-grid { grid-template-columns: 1fr; }
  .rtn-team-grid { grid-template-columns: 1fr; }
}

table.rtn-table-scroll-wrap {
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

pre { overflow-x: auto; max-width: 100%; }

.rtn-auth-card--reg {
  max-width: 520px;
}

.rtn-legal-page {
  background: var(--rtn-bg-light);
  padding-top: calc(var(--rtn-nav-h) + 48px);
  padding-bottom: 80px;
  min-height: 60vh;
}

.rtn-legal-content {
  max-width: 720px;
  margin-inline: auto;
  color: var(--rtn-text-lp);
  font-size: 16px;
  line-height: 1.75;
}

.rtn-legal-content h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 36px;
  font-weight: 700;
  color: var(--rtn-text-lp);
  margin-bottom: 16px;
}

.rtn-legal-content h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--rtn-text-lp);
  margin-top: 40px;
  margin-bottom: 12px;
}

.rtn-legal-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--rtn-text-lp);
  margin-top: 28px;
  margin-bottom: 8px;
}

.rtn-legal-content p {
  margin-bottom: 16px;
  color: var(--rtn-text-lp);
}

.rtn-legal-content a {
  color: var(--rtn-signal);
  text-decoration: underline;
}

.rtn-legal-content ul,
.rtn-legal-content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.rtn-legal-content li {
  margin-bottom: 8px;
  color: var(--rtn-text-lp);
}