/**
 * ResponBot theme tokens and component classes.
 * See THEME.md for branding guidelines.
 */

:root {
  --canvas: #f0ede8;
  --ink: #0f0e0d;
  --ink-secondary: #1c1a17;
  --muted-ink: #6b6660;
  --surface: #e5e5e5;
  --surface-inverse: #1c1a17;
  --accent: #2d5bff;
  --accent-deep: #0834bc;
  --border-light: #e5e5e5;
  --border-ink: #0f0e0d;
  --success: #1f7a4d;
  --danger: #b42318;
  --font-display: "Libre Baskerville", ui-serif, Georgia, serif;
  --font-sans: "Manrope", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "Roboto Mono", ui-monospace, monospace;
  --radius-btn: 2px;
  --radius-none: 0;
  --header-h: 3.5rem;
  --sidebar-w: 15rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.75rem);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .rb-marquee-track {
    animation: none !important;
  }

  .rb-grid-drift,
  .rb-use-card .rb-media-flush,
  .rb-media-frame img,
  .rb-split-card .rb-media-flush,
  .rb-trust-grid li::before,
  .rb-flow-step,
  .rb-split-card::after,
  .rb-card,
  .rb-use-card-body {
    transition: none !important;
    transform: none !important;
    filter: none !important;
    animation: none !important;
  }
}

body.rb-page {
  margin: 0;
  min-height: 100vh;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overscroll-behavior-y: contain;
}

.rb-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.rb-grid-fixed,
.rb-grid-drift {
  position: absolute;
  inset: 0;
}

.rb-grid-v {
  position: absolute;
  top: -10%;
  bottom: -10%;
  width: 1px;
  background: rgba(15, 14, 13, 0.1);
}

.rb-grid-v-1 {
  left: 1.25rem;
}

.rb-grid-v-2 {
  left: 50%;
}

.rb-grid-v-3 {
  right: 1.25rem;
}

.rb-grid-v-4 {
  display: none;
}

@media (min-width: 768px) {
  .rb-grid-v-1 {
    left: 3.5rem;
  }

  .rb-grid-v-3 {
    right: 3.5rem;
  }

  .rb-grid-v-4 {
    display: block;
    left: 25%;
  }

  .rb-grid-v-2 {
    left: 75%;
  }
}

.rb-grid-h {
  position: absolute;
  left: -5%;
  right: -5%;
  height: 1px;
  background: rgba(15, 14, 13, 0.07);
}

.rb-grid-h-1 {
  top: 22%;
}

.rb-grid-h-2 {
  top: 50%;
}

.rb-grid-h-3 {
  top: 78%;
}

.rb-grid-h-4 {
  top: 120%;
}

.rb-skip {
  position: absolute;
  left: 1rem;
  top: -100%;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--canvas);
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-btn);
}

.rb-skip:focus {
  top: 1rem;
}

body.rb-page > main,
body.rb-page > .rb-footer {
  position: relative;
  z-index: 1;
}

.rb-display {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.08;
}

.rb-section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2rem;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--ink);
}

@media (min-width: 768px) {
  .rb-section-title {
    font-size: 2.5rem;
    line-height: 1.12;
  }
}

@media (min-width: 1024px) {
  .rb-section-title {
    font-size: 2.75rem;
  }
}

.rb-page-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2rem;
  line-height: 1.3;
  color: var(--ink);
}

.rb-kicker {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-ink);
}

.rb-kicker-accent {
  color: var(--accent);
}

.rb-mono-caption {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--muted-ink);
}

.rb-muted {
  color: var(--muted-ink);
}

.rb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-btn);
  background: var(--accent);
  color: var(--canvas);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.55;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.rb-btn:hover {
  background: var(--accent-deep);
}

.rb-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.rb-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.rb-btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--border-ink);
  border-radius: var(--radius-btn);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.55;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.rb-btn-outline:hover {
  background: var(--ink);
  color: var(--canvas);
}

.rb-btn-outline:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.rb-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.75rem;
  border: none;
  border-radius: var(--radius-btn);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
}

.rb-btn-ghost:hover {
  background: var(--surface);
}

.rb-btn-ghost:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.rb-btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--danger);
  border-radius: var(--radius-btn);
  background: transparent;
  color: var(--danger);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
}

.rb-btn-danger:hover {
  background: var(--danger);
  color: var(--canvas);
}

.rb-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-none);
  padding: 1.5rem;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.rb-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

@media (min-width: 640px) {
  .rb-card {
    padding: 2rem;
  }
}

.rb-card-surface {
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-none);
  padding: 1.5rem;
}

.rb-card-inverse {
  background: var(--surface-inverse);
  color: var(--canvas);
  border: 1px solid var(--ink-secondary);
  border-radius: var(--radius-none);
  padding: 1.5rem;
  box-shadow: 0 0 0 1px rgba(8, 52, 188, 0.05), 0 24px 48px rgba(8, 52, 188, 0.08);
}

.rb-card-inverse .rb-muted,
.rb-card-inverse .rb-kicker {
  color: rgba(240, 237, 232, 0.65);
}

.rb-input,
.rb-select,
.rb-textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border-ink);
  border-radius: var(--radius-none);
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.55;
}

.rb-input:focus,
.rb-select:focus,
.rb-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.rb-input::placeholder,
.rb-textarea::placeholder {
  color: var(--muted-ink);
}

.rb-label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink);
}

.rb-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-light);
  background: #fff;
}

.rb-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.rb-table th {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: left;
  color: var(--muted-ink);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-light);
  background: var(--canvas);
  white-space: nowrap;
}

.rb-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-light);
  vertical-align: top;
  color: var(--ink);
}

.rb-table tr:last-child td {
  border-bottom: none;
}

.rb-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
  font-weight: 500;
}

.rb-badge-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 9999px;
  flex-shrink: 0;
}

.rb-badge-success {
  color: var(--success);
}

.rb-badge-success .rb-badge-dot {
  background: var(--success);
}

.rb-badge-muted {
  color: var(--muted-ink);
}

.rb-badge-muted .rb-badge-dot {
  background: var(--muted-ink);
}

.rb-badge-danger {
  color: var(--danger);
}

.rb-error {
  color: var(--danger);
  font-size: 0.875rem;
}

.rb-link {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--border-light);
  text-underline-offset: 4px;
}

.rb-link:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.rb-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid var(--border-light);
}

.rb-tab {
  padding: 0.65rem 1rem;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  background: transparent;
  color: var(--muted-ink);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
}

.rb-tab:hover {
  color: var(--ink);
}

.rb-tab[aria-selected="true"],
.rb-tab.is-active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.rb-tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.rb-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 1.5rem;
  overflow-y: auto;
  background: rgba(15, 14, 13, 0.45);
}

.rb-modal {
  width: 100%;
  max-width: 40rem;
  margin: 2rem auto;
  background: var(--canvas);
  border: 1px solid var(--border-ink);
  border-radius: var(--radius-none);
  padding: 1.5rem;
}

@media (min-width: 640px) {
  .rb-modal {
    padding: 2rem;
    max-width: 48rem;
  }
}

.rb-toggle {
  position: relative;
  width: 2.75rem;
  height: 1.5rem;
  border: 1px solid var(--border-ink);
  border-radius: var(--radius-btn);
  background: var(--surface);
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
}

.rb-toggle[aria-checked="true"],
.rb-toggle.is-on {
  background: var(--accent);
  border-color: var(--accent);
}

.rb-toggle::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: calc(1.5rem - 6px);
  height: calc(1.5rem - 6px);
  background: var(--canvas);
  border: 1px solid var(--border-ink);
  transition: transform 0.15s ease;
}

.rb-toggle[aria-checked="true"]::after,
.rb-toggle.is-on::after {
  transform: translateX(1.2rem);
  border-color: transparent;
}

.rb-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Landing header */
.rb-site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
  padding: 0.875rem 1.25rem;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease, backdrop-filter 0.2s ease;
}

.rb-site-header.is-scrolled {
  background: rgba(240, 237, 232, 0.72);
  border-bottom-color: var(--border-light);
  backdrop-filter: saturate(1.15) blur(16px);
  -webkit-backdrop-filter: saturate(1.15) blur(16px);
}

@media (min-width: 768px) {
  .rb-site-header {
    padding-left: 3.5rem;
    padding-right: 3.5rem;
  }
}

.rb-wordmark {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.rb-site-nav {
  display: none;
  align-items: center;
  gap: 2rem;
}

@media (min-width: 768px) {
  .rb-site-nav {
    display: flex;
  }
}

.rb-site-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.005em;
}

.rb-site-nav a:hover {
  color: var(--accent);
}

.rb-site-nav a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.rb-menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border-ink);
  border-radius: var(--radius-btn);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

.rb-menu-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (min-width: 768px) {
  .rb-site-header .rb-menu-btn {
    display: none;
  }
}

.rb-mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 45;
  background: var(--canvas);
  padding: 1.25rem;
  flex-direction: column;
  gap: 1.5rem;
}

.rb-mobile-nav.is-open {
  display: flex;
}

.rb-mobile-nav a {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-light);
}

.rb-mobile-nav a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.rb-section {
  padding: 5.5rem 1.25rem;
}

@media (min-width: 768px) {
  .rb-section {
    padding: 7.5rem 3.5rem;
  }
}

@media (min-width: 1024px) {
  .rb-section {
    padding: 8.5rem 3.5rem;
  }
}

.rb-hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 5rem 1.25rem 4rem;
  box-sizing: border-box;
}

@media (min-width: 768px) {
  .rb-hero {
    padding: 3rem 3.5rem 5rem;
  }
}

.rb-hero-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .rb-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 4rem;
  }
}

.rb-media {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-none);
  object-fit: cover;
  background: var(--surface);
}

.rb-media-tall {
  aspect-ratio: 4 / 3;
  height: 100%;
  object-fit: cover;
}

.rb-media-wide {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.rb-media-flush {
  border: none;
  width: 100%;
  height: 11rem;
  object-fit: cover;
  display: block;
}

@media (min-width: 768px) {
  .rb-media-flush {
    height: 13rem;
  }
}

.rb-media-frame {
  overflow: hidden;
  border: 1px solid var(--border-light);
  background: var(--surface);
}

.rb-media-frame .rb-media {
  border: none;
  display: block;
  width: 100%;
  transition: transform 0.7s ease;
}

.rb-media-frame:hover .rb-media {
  transform: scale(1.045);
}

.rb-use-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  min-height: 100%;
  overflow: hidden;
}

.rb-use-card .rb-media-flush {
  transition: transform 0.7s ease, filter 0.55s ease;
  filter: grayscale(0.2) contrast(0.98);
}

.rb-use-card:hover .rb-media-flush {
  transform: scale(1.08);
  filter: grayscale(0) contrast(1.04);
}

.rb-use-card-body {
  position: relative;
  padding: 1.75rem 1.5rem 2rem;
  transition: transform 0.35s ease;
}

.rb-use-card:hover .rb-use-card-body {
  transform: translateY(-4px);
}

@media (min-width: 768px) {
  .rb-use-card-body {
    padding: 2rem 2rem 2.5rem;
  }
}

.rb-container {
  max-width: 72rem;
  margin-left: auto;
  margin-right: auto;
}

.rb-container-narrow {
  max-width: 40rem;
  margin-left: auto;
  margin-right: auto;
}

.rb-hero-lead {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--muted-ink);
}

.rb-hero-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  line-height: 1.08;
  color: var(--ink);
}

.rb-hero-title em {
  font-style: italic;
  font-weight: 400;
}

@media (min-width: 768px) {
  .rb-hero-lead {
    font-size: 1.125rem;
  }

  .rb-hero-title {
    font-size: 3.5rem;
  }
}

@media (min-width: 1024px) {
  .rb-hero-title {
    font-size: 4.25rem;
  }
}

.rb-nav-cta {
  display: none;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}

.rb-nav-cta:hover {
  color: var(--accent);
}

.rb-nav-cta:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (min-width: 640px) {
  .rb-nav-cta {
    display: inline-flex;
  }
}

.rb-trust {
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-light);
}

.rb-trust-label {
  margin-bottom: 1.5rem;
}

.rb-trust-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border: 1px solid var(--border-light);
}

@media (min-width: 768px) {
  .rb-trust {
    margin-top: 5rem;
  }

  .rb-trust-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.rb-trust-grid li {
  position: relative;
  overflow: hidden;
  padding: 1.5rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
  background: #fff;
}

.rb-trust-grid li::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 0;
  background: var(--accent);
  opacity: 0.1;
  transition: width 0.4s ease;
}

.rb-trust-grid li:hover::before {
  width: 100%;
}

.rb-trust-grid li > * {
  position: relative;
}

.rb-trust-grid li:last-child {
  border-bottom: none;
}

@media (min-width: 768px) {
  .rb-trust-grid li {
    padding: 2rem 1.75rem;
    border-bottom: none;
    border-right: 1px solid var(--border-light);
  }

  .rb-trust-grid li:last-child {
    border-right: none;
  }
}

.rb-trust-name {
  margin: 0.75rem 0 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.25;
  color: var(--ink);
}

.rb-trust-note {
  margin: 0.4rem 0 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--muted-ink);
}

.rb-problem {
  padding: 5.5rem 0 0;
}

@media (min-width: 768px) {
  .rb-problem {
    padding-top: 7.5rem;
  }
}

.rb-problem .rb-container {
  padding-left: 1.25rem;
  padding-right: 1.25rem;
  padding-bottom: 3rem;
}

@media (min-width: 768px) {
  .rb-problem .rb-container {
    padding-left: 3.5rem;
    padding-right: 3.5rem;
    padding-bottom: 3.5rem;
  }
}

.rb-marquee {
  overflow: hidden;
  border-top: 1px solid var(--border-ink);
  border-bottom: 1px solid var(--border-ink);
  background: var(--surface-inverse);
  padding: 1.5rem 0;
}

@media (min-width: 768px) {
  .rb-marquee {
    padding: 2rem 0;
  }
}

.rb-marquee-track {
  display: flex;
  width: max-content;
  align-items: center;
  gap: 0;
  animation: rb-marquee 42s linear infinite;
}

.rb-marquee:hover .rb-marquee-track,
.rb-marquee:focus-within .rb-marquee-track {
  animation-play-state: paused;
}

.rb-marquee-item {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--canvas);
  white-space: nowrap;
  padding: 0 1.75rem;
}

.rb-marquee-item::after {
  content: "";
  width: 0.35rem;
  height: 0.35rem;
  margin-left: 1.75rem;
  background: var(--accent);
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .rb-marquee-item {
    font-size: 1.75rem;
    padding: 0 2.25rem;
  }

  .rb-marquee-item::after {
    margin-left: 2.25rem;
  }
}

@keyframes rb-marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.rb-split {
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .rb-split {
    grid-template-columns: 1fr 1fr;
  }
}

.rb-split > * {
  border-radius: var(--radius-none);
  overflow: hidden;
}

.rb-split-card .rb-media-flush {
  transition: transform 0.75s ease, filter 0.5s ease;
  filter: grayscale(0.35);
}

.rb-split-card:hover .rb-media-flush {
  transform: scale(1.07);
  filter: grayscale(0) saturate(1.05);
}

.rb-split-card {
  position: relative;
}

.rb-split-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.rb-split-card:hover::after {
  transform: scaleX(1);
}

.rb-footer {
  background: var(--ink);
  color: var(--canvas);
  padding: 4.5rem 1.25rem 0;
}

@media (min-width: 768px) {
  .rb-footer {
    padding-left: 3.5rem;
    padding-right: 3.5rem;
  }
}

.rb-footer a {
  color: rgba(240, 237, 232, 0.85);
  text-decoration: none;
  font-size: 0.875rem;
}

.rb-footer a:hover {
  color: var(--canvas);
}

.rb-footer .rb-kicker {
  color: rgba(240, 237, 232, 0.55);
}

.rb-footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .rb-footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .rb-footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
}

.rb-footer-meta {
  margin-top: 3rem;
  padding-bottom: 1.5rem;
}

.rb-footer-brand {
  display: flex;
  width: 100%;
  margin: 0;
  padding: 0 0 0.15em;
  overflow: hidden;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3.5rem, 18vw, 14rem);
  line-height: 0.82;
  letter-spacing: -0.04em;
  color: rgba(240, 237, 232, 0.12);
  user-select: none;
  pointer-events: none;
  white-space: nowrap;
  justify-content: center;
}

/* App shell */
.rb-app-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: var(--header-h);
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--border-light);
  background: rgba(240, 237, 232, 0.92);
  backdrop-filter: saturate(1.1) blur(12px);
  -webkit-backdrop-filter: saturate(1.1) blur(12px);
  position: sticky;
  top: 0;
  z-index: 30;
}

@media (min-width: 1024px) {
  .rb-app-topbar {
    display: none;
  }
}

.rb-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 35;
  display: flex;
  flex-direction: column;
  width: var(--sidebar-w);
  height: 100vh;
  padding: 1.5rem 1rem;
  background: #fff;
  border-right: 1px solid var(--border-light);
  transform: translateX(-100%);
  transition: transform 0.2s ease;
}

.rb-sidebar.is-open {
  transform: translateX(0);
}

@media (min-width: 1024px) {
  .rb-sidebar {
    position: sticky;
    transform: none;
    transition: none;
  }
}

.rb-sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 34;
  background: rgba(15, 14, 13, 0.4);
}

.rb-sidebar-backdrop.is-open {
  display: block;
}

@media (min-width: 1024px) {
  .rb-sidebar-backdrop {
    display: none !important;
  }
}

.rb-shell {
  display: flex;
  min-height: 100vh;
  width: 100%;
  background: var(--canvas);
}

.rb-shell-main-col {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
  background: var(--canvas);
}

.rb-nav-link {
  display: block;
  padding: 0.6rem 0.75rem;
  border-left: 2px solid transparent;
  color: var(--muted-ink);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  text-decoration: none;
  transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.rb-nav-link:hover {
  color: var(--ink);
  background: var(--canvas);
}

.rb-nav-link.is-active {
  color: var(--ink);
  background: var(--canvas);
  border-left-color: var(--accent);
  font-weight: 600;
}

.rb-nav-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.rb-popover {
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  margin-bottom: 0.5rem;
  padding: 0.25rem;
  background: #fff;
  border: 1px solid var(--border-ink);
  border-radius: var(--radius-none);
  z-index: 20;
}

.rb-popover a,
.rb-popover button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.55rem 0.75rem;
  border: none;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  text-decoration: none;
  cursor: pointer;
}

.rb-popover a:hover,
.rb-popover button:hover {
  background: var(--canvas);
  color: var(--accent);
}

.rb-profile-btn {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-none);
  background: var(--canvas);
  text-align: left;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.rb-profile-btn:hover {
  border-color: var(--border-ink);
  background: #fff;
}

.rb-profile-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.rb-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 9999px;
  object-fit: cover;
  border: 1px solid var(--border-light);
}

.rb-avatar-fallback {
  display: flex;
  width: 2rem;
  height: 2rem;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background: var(--canvas);
  border: 1px solid var(--border-light);
  color: var(--muted-ink);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

body.rb-drawer-open {
  overflow: hidden;
}

@media (min-width: 1024px) {
  body.rb-drawer-open {
    overflow: auto;
  }
}

.rb-arrow {
  display: inline-block;
  transition: transform 0.15s ease;
}

.rb-btn:hover .rb-arrow,
.rb-btn-outline:hover .rb-arrow {
  transform: translateX(2px);
}

.rb-flow-step {
  border: 1px solid var(--border-light);
  background: #fff;
  padding: 1.75rem 1.5rem;
  min-height: 11.5rem;
  transition: transform 0.3s ease, border-color 0.3s ease, background-color 0.3s ease;
}

.rb-flow-step:hover {
  transform: translateY(-6px);
  background: var(--canvas);
}

.rb-flow-step.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.rb-cta-band {
  width: 100%;
  background: var(--canvas);
  color: var(--ink);
  border-top: 1px solid var(--border-light);
  padding: 6rem 1.25rem;
}

@media (min-width: 768px) {
  .rb-cta-band {
    padding: 8.5rem 3.5rem;
  }
}

.rb-cta-band .rb-kicker {
  color: var(--muted-ink);
}

.rb-cta-band .rb-mono-caption {
  color: var(--muted-ink);
}

.rb-cta-band .rb-mono-caption a {
  color: var(--ink);
}

.rb-stat {
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.rb-proof-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.rb-proof-table th,
.rb-proof-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-light);
  text-align: left;
  vertical-align: top;
}

.rb-proof-table th {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-ink);
  font-weight: 500;
  background: var(--canvas);
}

.rb-legal-prose h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--ink);
}

.rb-legal-prose p,
.rb-legal-prose li {
  color: var(--ink);
  line-height: 1.6;
}