:root {
  --rrb-ink: #171513;
  --rrb-muted: #6e6760;
  --rrb-paper: #f7f1e7;
  --rrb-surface: #fffdf8;
  --rrb-line: #d8cec0;
  --rrb-accent: #c63d2f;
  --rrb-accent-dark: #9e2c22;
}

.rrb-page {
  background: var(--rrb-surface);
  color: var(--rrb-ink);
}

.rrb-page .cb-main {
  overflow: hidden;
}

.rrb {
  width: min(100%, 1440px);
  margin: 0 auto;
  padding: 72px clamp(20px, 5vw, 80px) 96px;
  font-family: Arial, "Noto Sans JP", sans-serif;
}

.rrb-intro {
  position: relative;
  padding: 0 0 58px;
  border-bottom: 1px solid var(--rrb-ink);
  animation: rrb-rise 560ms ease-out both;
}

.rrb-intro::after {
  position: absolute;
  right: 0;
  bottom: -2px;
  width: min(30vw, 420px);
  height: 3px;
  background: var(--rrb-accent);
  content: "";
  transform-origin: right;
  animation: rrb-rule 800ms 180ms cubic-bezier(.2, .7, .2, 1) both;
}

.rrb-intro__eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
  color: var(--rrb-muted);
  font-family: "Roboto Mono", monospace;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.rrb-intro__eyebrow span:first-child {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--rrb-accent);
  border-radius: 50%;
  color: var(--rrb-accent);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 13px;
  letter-spacing: 0;
}

.rrb-intro__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 340px);
  gap: clamp(40px, 8vw, 120px);
  align-items: end;
}

.rrb h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(44px, 6.4vw, 94px);
  font-weight: 500;
  letter-spacing: -.055em;
  line-height: .96;
}

.rrb-intro__lede {
  max-width: 700px;
  margin: 28px 0 0;
  color: var(--rrb-muted);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.5;
}

.rrb-intro__privacy {
  margin: 0;
  padding-left: 20px;
  border-left: 2px solid var(--rrb-accent);
  color: var(--rrb-muted);
  font-size: 14px;
  line-height: 1.65;
}

.rrb-intro__privacy strong {
  display: block;
  color: var(--rrb-ink);
  font-weight: 700;
}

.rrb-workspace {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(420px, 1.08fr);
  min-height: 820px;
  border-bottom: 1px solid var(--rrb-ink);
}

.rrb-form-pane,
.rrb-preview-pane {
  padding: 56px 0 64px;
}

.rrb-form-pane {
  padding-right: clamp(28px, 4vw, 64px);
}

.rrb-preview-pane {
  position: relative;
  padding-left: clamp(28px, 4vw, 64px);
  border-left: 1px solid var(--rrb-line);
  background: linear-gradient(90deg, rgba(247, 241, 231, .38), rgba(247, 241, 231, 0) 70%);
}

.rrb-section-heading {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 38px;
}

.rrb-section-heading > span {
  padding-top: 4px;
  color: var(--rrb-accent);
  font-family: "Roboto Mono", monospace;
  font-size: 12px;
}

.rrb-section-heading h2 {
  margin: 0;
  font-size: clamp(25px, 2.6vw, 36px);
  font-weight: 500;
  letter-spacing: -.035em;
  line-height: 1.1;
}

.rrb-section-heading p {
  margin: 8px 0 0;
  color: var(--rrb-muted);
  font-size: 14px;
  line-height: 1.5;
}

.rrb-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 25px 20px;
}

.rrb-field {
  min-width: 0;
}

.rrb-field--wide {
  grid-column: 1 / -1;
}

.rrb-field label {
  display: block;
  margin-bottom: 9px;
  color: var(--rrb-ink);
  font-family: "Roboto Mono", monospace;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .02em;
}

.rrb-field input,
.rrb-field select,
.rrb-field textarea {
  display: block;
  width: 100%;
  border: 0;
  border-bottom: 1px solid #aaa095;
  border-radius: 0;
  outline: 0;
  background: transparent;
  color: var(--rrb-ink);
  font: inherit;
  font-size: 16px;
  line-height: 1.45;
  transition: border-color 160ms ease, background-color 160ms ease;
}

.rrb-field input,
.rrb-field select {
  height: 48px;
  padding: 6px 2px;
}

.rrb-field textarea {
  min-height: 88px;
  padding: 10px 2px;
  resize: vertical;
}

.rrb-field input:focus,
.rrb-field select:focus,
.rrb-field textarea:focus {
  border-color: var(--rrb-accent);
  background: rgba(198, 61, 47, .035);
}

.rrb-field input::placeholder,
.rrb-field textarea::placeholder {
  color: #948b83;
  opacity: 1;
}

.rrb-field__note {
  display: block;
  margin-top: 8px;
  color: var(--rrb-muted);
  font-size: 12px;
  line-height: 1.45;
}

.rrb-paper {
  position: relative;
  min-height: 560px;
  padding: clamp(28px, 4vw, 52px);
  overflow: hidden;
  border: 1px solid #d3c5b5;
  background:
    linear-gradient(rgba(96, 69, 46, .035) 1px, transparent 1px),
    var(--rrb-paper);
  background-size: 100% 30px;
  box-shadow: 0 22px 60px rgba(54, 40, 28, .10);
  transform: translateY(0);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.rrb-paper::before {
  position: absolute;
  top: 20px;
  right: 22px;
  width: 58px;
  height: 58px;
  border: 2px solid rgba(198, 61, 47, .42);
  border-radius: 50%;
  content: "確認";
  color: rgba(198, 61, 47, .6);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 12px;
  line-height: 58px;
  text-align: center;
  transform: rotate(-8deg);
}

.rrb-preview-pane:hover .rrb-paper {
  box-shadow: 0 28px 72px rgba(54, 40, 28, .14);
  transform: translateY(-3px);
}

.rrb-paper__topline {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  max-width: calc(100% - 72px);
  margin-bottom: 44px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rrb-ink);
  font-family: "Roboto Mono", monospace;
  font-size: 10px;
  letter-spacing: .08em;
}

.rrb-paper__opening {
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 600;
  letter-spacing: .02em;
}

.rrb-paper__translation {
  margin: 6px 0 32px;
  color: var(--rrb-muted);
  font-size: 13px;
}

.rrb-brief {
  margin: 0;
}

.rrb-brief > div {
  display: grid;
  grid-template-columns: minmax(145px, .85fr) minmax(0, 1.15fr);
  gap: 20px;
  padding: 13px 0;
  border-top: 1px solid rgba(82, 63, 45, .18);
}

.rrb-brief dt {
  color: var(--rrb-muted);
  font-family: "Roboto Mono", monospace;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.45;
  text-transform: uppercase;
}

.rrb-brief dt span {
  display: block;
  color: var(--rrb-ink);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 12px;
  text-transform: none;
}

.rrb-brief dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}

.rrb-paper__confirmation {
  margin-top: 30px;
  padding: 22px 0 0;
  border-top: 2px solid var(--rrb-ink);
}

.rrb-paper__confirmation > span {
  font-family: "Roboto Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
}

.rrb-paper__confirmation ul {
  display: grid;
  gap: 6px;
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--rrb-muted);
  font-size: 12px;
  line-height: 1.45;
}

.rrb-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 22px;
}

.rrb-button {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--rrb-ink);
  border-radius: 0;
  background: transparent;
  color: var(--rrb-ink);
  font-family: "Roboto Mono", monospace;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.rrb-button:hover,
.rrb-button:focus-visible {
  background: var(--rrb-ink);
  color: #fff;
  transform: translateY(-2px);
}

.rrb-button--primary {
  border-color: var(--rrb-accent);
  background: var(--rrb-accent);
  color: #fff;
}

.rrb-button--primary:hover,
.rrb-button--primary:focus-visible {
  border-color: var(--rrb-accent-dark);
  background: var(--rrb-accent-dark);
}

.rrb-button.is-copied {
  animation: rrb-confirm 360ms ease-out;
}

.rrb-actions__status {
  flex-basis: 100%;
  min-height: 20px;
  margin: 2px 0 0;
  color: var(--rrb-muted);
  font-size: 12px;
}

.rrb-guidance {
  padding: 70px 0;
  border-bottom: 1px solid var(--rrb-ink);
}

.rrb-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.rrb-steps li {
  min-height: 170px;
  padding: 26px clamp(20px, 3vw, 40px);
  border-left: 1px solid var(--rrb-line);
}

.rrb-steps li:first-child {
  padding-left: 0;
  border-left: 0;
}

.rrb-steps span {
  display: block;
  margin-bottom: 22px;
  color: var(--rrb-accent);
  font-family: "Roboto Mono", monospace;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.rrb-steps p {
  margin: 0;
  color: var(--rrb-muted);
  font-size: 15px;
  line-height: 1.7;
}

.rrb-assistance {
  max-width: 900px;
  padding: 84px 0 0;
}

.rrb-assistance__kicker {
  margin: 0 0 22px;
  color: var(--rrb-accent);
  font-family: "Roboto Mono", monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.rrb-assistance h2 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(38px, 5.5vw, 72px);
  font-weight: 500;
  letter-spacing: -.05em;
  line-height: 1;
}

.rrb-assistance > p:not(.rrb-assistance__kicker) {
  max-width: 720px;
  margin: 26px 0;
  color: var(--rrb-muted);
  font-size: 17px;
  line-height: 1.65;
}

.rrb-assistance a {
  display: inline-flex;
  gap: 28px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--rrb-accent);
  color: var(--rrb-accent);
  font-family: "Roboto Mono", monospace;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: gap 180ms ease, color 180ms ease;
}

.rrb-assistance a:hover,
.rrb-assistance a:focus-visible {
  gap: 38px;
  color: var(--rrb-accent-dark);
  text-decoration: none;
}

@keyframes rrb-rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes rrb-rule {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@keyframes rrb-confirm {
  0%, 100% { transform: translateY(0); }
  45% { transform: translateY(-4px); }
}

@media (max-width: 980px) {
  .rrb {
    padding-top: 52px;
  }

  .rrb-intro__grid,
  .rrb-workspace {
    grid-template-columns: 1fr;
  }

  .rrb-intro__privacy {
    max-width: 520px;
    margin-top: 36px;
  }

  .rrb-form-pane {
    padding-right: 0;
  }

  .rrb-preview-pane {
    padding-left: 0;
    border-top: 1px solid var(--rrb-line);
    border-left: 0;
    background: linear-gradient(180deg, rgba(247, 241, 231, .38), rgba(247, 241, 231, 0) 60%);
  }
}

@media (max-width: 620px) {
  .rrb {
    padding: 38px 18px 72px;
  }

  .rrb-intro {
    padding-bottom: 42px;
  }

  .rrb-intro__eyebrow {
    margin-bottom: 28px;
  }

  .rrb h1 {
    font-size: clamp(39px, 12vw, 56px);
  }

  .rrb-intro__lede {
    font-size: 17px;
  }

  .rrb-form-pane,
  .rrb-preview-pane {
    padding-top: 42px;
  }

  .rrb-form {
    grid-template-columns: 1fr;
  }

  .rrb-field--wide {
    grid-column: auto;
  }

  .rrb-paper {
    margin: 0 -6px;
    padding: 24px 20px;
  }

  .rrb-paper::before {
    top: 14px;
    right: 14px;
    width: 48px;
    height: 48px;
    line-height: 48px;
  }

  .rrb-paper__topline {
    max-width: calc(100% - 58px);
    margin-bottom: 36px;
  }

  .rrb-brief > div {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .rrb-brief dt span {
    display: inline;
    margin-left: 8px;
  }

  .rrb-actions {
    align-items: stretch;
  }

  .rrb-button {
    flex: 1 1 100%;
  }

  .rrb-steps {
    grid-template-columns: 1fr;
  }

  .rrb-steps li {
    min-height: 0;
    padding: 28px 0;
    border-top: 1px solid var(--rrb-line);
    border-left: 0;
  }

  .rrb-steps li:first-child {
    border-top: 0;
  }

  .rrb-assistance {
    padding-top: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .rrb-intro,
  .rrb-intro::after,
  .rrb-button.is-copied {
    animation: none;
  }

  .rrb-paper,
  .rrb-button,
  .rrb-assistance a {
    transition: none;
  }

  .rrb-preview-pane:hover .rrb-paper,
  .rrb-button:hover,
  .rrb-button:focus-visible {
    transform: none;
  }
}

@media print {
  .cb-header,
  .rrb-intro,
  .rrb-form-pane,
  .rrb-section-heading--preview,
  .rrb-actions,
  .rrb-guidance,
  .rrb-assistance,
  footer {
    display: none !important;
  }

  .rrb,
  .rrb-workspace,
  .rrb-preview-pane {
    width: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    background: #fff;
  }

  .rrb-workspace {
    display: block;
    min-height: 0;
  }

  .rrb-paper {
    min-height: 0;
    border: 1px solid #777;
    background: #fff;
    box-shadow: none;
    break-inside: avoid;
  }
}