.page-contact {
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: var(--sp-7);
  --fb-card-bg: rgba(20, 58, 49, 0.55);
  --fb-text-soft: rgba(244, 239, 230, 0.76);
  --fb-text-dim: rgba(244, 239, 230, 0.58);
  --fb-ink-soft: rgba(18, 16, 14, 0.72);
}

.page-contact .fb-hero {
  background:
    radial-gradient(120% 90% at 82% -10%, rgba(200, 162, 74, 0.16), transparent 62%),
    radial-gradient(90% 70% at 4% 100%, rgba(110, 35, 32, 0.32), transparent 60%),
    var(--ink-900);
  border-bottom: var(--line);
  padding-block: var(--sp-3) var(--sp-6);
}

.page-contact .fb-hero__inner {
  display: block;
}

.page-contact .fb-hero__grid {
  display: grid;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}

.page-contact .fb-hero__lede {
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.95;
  color: var(--fb-text-soft);
  max-width: 44ch;
  margin-top: var(--sp-2);
}

.page-contact .fb-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 7.2vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin-top: 12px;
  text-wrap: balance;
}

.page-contact .info-board {
  margin: var(--sp-4) 0 0;
  border-top: var(--line);
}

.page-contact .info-board__cell {
  display: grid;
  grid-template-columns: 5.5em minmax(0, 1fr);
  gap: 4px 12px;
  align-items: baseline;
  padding-block: 12px;
  border-bottom: var(--line);
}

.page-contact .info-board dt {
  font-family: var(--font-ui);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-contact .info-board dd {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--paper);
  margin: 0;
  word-break: break-word;
}

.page-contact .fb-hero__figure {
  margin: 0;
}

.page-contact .fb-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .fb-body {
  display: grid;
  gap: var(--sp-5);
  padding-block: var(--sp-6) 0;
}

.page-contact .fb-rail {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.page-contact .fb-rail__card {
  background: var(--ink-800);
  border: var(--line);
  border-top: 2px solid var(--gold);
  padding: var(--sp-3);
  box-shadow: var(--shadow-2);
}

.page-contact .fb-rail__status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--gold-lite);
  margin: 0;
}

.page-contact .fb-dot {
  width: 8px;
  height: 8px;
  background: var(--ruby);
  flex: none;
  box-shadow: 0 0 0 3px rgba(210, 64, 47, 0.18);
}

.page-contact .fb-rail__note {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--fb-text-soft);
  margin: 10px 0 0;
}

.page-contact .fb-rail__track {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: var(--line);
  margin-top: var(--sp-2);
}

.page-contact .fb-rail__track .chapter-track__link {
  display: block;
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  color: var(--fb-text-dim);
  text-decoration: none;
  padding: 10px 0 10px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  transition: color var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}

.page-contact .fb-rail__track .chapter-track__link:hover {
  color: var(--gold-lite);
}

.page-contact .fb-rail__track .chapter-track__link[aria-current="true"],
.page-contact .fb-rail__track .chapter-track__link[aria-current="page"] {
  color: var(--gold-lite);
  border-left-color: var(--ruby);
}

.page-contact .fb-rail__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--steel);
  margin: 0;
  padding-top: var(--sp-2);
  border-top: var(--line);
}

.page-contact .fb-main {
  min-width: 0;
}

.page-contact .fb-sec {
  padding-block: var(--sp-5);
  border-top: var(--line);
}

.page-contact .fb-main > .fb-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .fb-sec__head {
  max-width: 56ch;
  margin-bottom: var(--sp-4);
}

.page-contact .fb-sec h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.6vw, 2.15rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0;
}

.page-contact .fb-sec__intro {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.9;
  color: var(--fb-text-soft);
  margin: 12px 0 0;
}

.page-contact .fb-steps {
  display: grid;
  gap: var(--sp-2);
}

.page-contact .fb-step {
  background: var(--fb-card-bg);
  border: var(--line);
  padding: var(--sp-3);
  transition: border-color var(--dur-2) var(--ease), transform var(--dur-2) var(--ease);
}

.page-contact .fb-step:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-contact .fb-step__num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-contact .fb-step h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-md);
  color: var(--paper);
  margin: 10px 0 8px;
}

.page-contact .fb-step p {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: var(--fb-text-soft);
  margin: 0;
}

.page-contact .fb-check {
  margin-top: var(--sp-3);
  background: var(--ink-800);
  border: var(--line);
  padding: var(--sp-3);
}

.page-contact .fb-check__title {
  font-family: var(--font-ui);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  color: var(--gold-lite);
  margin: 0;
}

.page-contact .fb-check__list {
  list-style: none;
  margin: var(--sp-2) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .fb-check__item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--fb-text-soft);
}

.page-contact .fb-check__item input {
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 3px;
  accent-color: var(--ruby);
}

.page-contact .fb-check__item label {
  cursor: pointer;
}

.page-contact .fb-sec--paper {
  background: var(--paper);
  color: var(--coal);
  border: 1px solid var(--ink-700);
  padding-inline: var(--sp-2);
  margin-inline: 0;
}

.page-contact .fb-sec--paper .fb-sec__head {
  max-width: 60ch;
}

.page-contact .fb-sec--paper h2 {
  color: var(--coal);
}

.page-contact .fb-sec--paper .fb-sec__intro {
  color: var(--fb-ink-soft);
}

.page-contact .fb-channels {
  display: grid;
  gap: var(--sp-2);
}

.page-contact .fb-chan {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(18, 16, 14, 0.16);
  border-left: 2px solid var(--wine);
  padding: var(--sp-3);
}

.page-contact .fb-chan__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 24px;
  padding-inline: 6px;
  background: var(--ruby);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
}

.page-contact .fb-chan h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-lg);
  color: var(--coal);
  margin: 12px 0 0;
}

.page-contact .fb-chan__desc {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--fb-ink-soft);
  margin: 8px 0 0;
}

.page-contact .fb-chan details {
  margin-top: var(--sp-2);
  border-top: 1px dashed rgba(18, 16, 14, 0.24);
  padding-top: 12px;
}

.page-contact .fb-chan summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--wine);
}

.page-contact .fb-chan summary::-webkit-details-marker {
  display: none;
}

.page-contact .fb-chan summary::after {
  content: "＋";
  font-family: var(--font-mono);
  color: var(--ruby);
}

.page-contact .fb-chan details[open] summary::after {
  content: "－";
}

.page-contact .fb-chan ul {
  margin: 10px 0 0;
  padding-left: 1.1em;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: var(--fb-ink-soft);
}

.page-contact .fb-chan li + li {
  margin-top: 4px;
}

.page-contact .fb-flow {
  display: grid;
  gap: var(--sp-4);
}

.page-contact .fb-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-contact .fb-timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 8px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), var(--ink-700));
}

.page-contact .fb-timeline__item {
  position: relative;
  padding-left: var(--sp-4);
  padding-bottom: var(--sp-3);
}

.page-contact .fb-timeline__item:last-child {
  padding-bottom: 0;
}

.page-contact .fb-timeline__dot {
  position: absolute;
  left: 0;
  top: 0;
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  background: var(--ink-900);
  border: 1px solid var(--gold);
  color: var(--gold-lite);
  font-family: var(--font-mono);
  font-size: 11px;
}

.page-contact .fb-timeline h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-md);
  color: var(--paper);
  margin: 2px 0 8px;
}

.page-contact .fb-timeline__item p {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: var(--fb-text-soft);
  margin: 0;
}

.page-contact .fb-timeline details {
  margin-top: 12px;
  border-left: 1px solid var(--ink-700);
  padding-left: 14px;
}

.page-contact .fb-timeline summary {
  list-style: none;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-contact .fb-timeline summary::-webkit-details-marker {
  display: none;
}

.page-contact .fb-timeline summary::before {
  content: "＋";
  font-family: var(--font-mono);
  color: var(--ruby);
}

.page-contact .fb-timeline details[open] summary::before {
  content: "－";
}

.page-contact .fb-timeline details ul {
  margin: 10px 0 0;
  padding-left: 1.1em;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--fb-text-dim);
}

.page-contact .fb-flow__aside {
  display: grid;
  gap: var(--sp-2);
}

.page-contact .fb-flow__aside .media-frame {
  margin: 0;
}

.page-contact .fb-flow__aside img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .fb-sla {
  display: grid;
  gap: var(--sp-2);
  background: var(--wine);
  border: 1px solid rgba(200, 162, 74, 0.38);
  padding: var(--sp-3);
}

.page-contact .fb-sla__item {
  display: grid;
  gap: 2px;
}

.page-contact .fb-sla__num {
  font-family: var(--font-mono);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-contact .fb-sla__label {
  font-family: var(--font-ui);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  color: rgba(244, 239, 230, 0.82);
}

.page-contact .fb-reach {
  display: grid;
  gap: var(--sp-2);
  margin: 0;
}

.page-contact .fb-reach__card {
  background: var(--fb-card-bg);
  border: var(--line);
  border-top: 2px solid var(--gold);
  padding: var(--sp-3);
}

.page-contact .fb-reach dt {
  font-family: var(--font-ui);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-contact .fb-reach dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--paper);
  word-break: break-word;
}

.page-contact .fb-reach__hint {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--fb-text-soft);
  margin: 10px 0 0;
}

.page-contact .fb-links {
  display: grid;
  gap: var(--sp-2);
}

.page-contact .fb-link {
  display: block;
  position: relative;
  text-decoration: none;
  background: rgba(20, 58, 49, 0.5);
  border: var(--line);
  padding: var(--sp-3) var(--sp-4) var(--sp-3) var(--sp-3);
  transition: border-color var(--dur-2) var(--ease), transform var(--dur-2) var(--ease), background-color var(--dur-2) var(--ease);
}

.page-contact .fb-link::after {
  content: "→";
  position: absolute;
  top: var(--sp-3);
  right: var(--sp-3);
  font-family: var(--font-mono);
  color: var(--gold);
  transition: color var(--dur-2) var(--ease);
}

.page-contact .fb-link:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  background: rgba(20, 58, 49, 0.8);
}

.page-contact .fb-link:hover::after {
  color: var(--gold-lite);
}

.page-contact .fb-link:focus-visible {
  outline: 2px solid var(--gold-lite);
  outline-offset: 2px;
}

.page-contact .fb-link__title {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-md);
  color: var(--paper);
  padding-right: 24px;
}

.page-contact .fb-link__desc {
  display: block;
  margin-top: 8px;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: var(--steel-lite);
}

@media (min-width: 640px) {
  .page-contact .fb-sec--paper {
    padding-inline: var(--sp-3);
  }

  .page-contact .fb-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .fb-check__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .fb-info-grid,
  .page-contact .fb-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .fb-sla {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-contact .fb-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .fb-reach {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .fb-hero {
    padding-block: var(--sp-4) var(--sp-7);
  }

  .page-contact .fb-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--sp-5);
    align-items: start;
  }

  .page-contact .fb-hero__figure {
    margin-top: var(--sp-2);
  }

  .page-contact .fb-flow {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--sp-5);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-contact .fb-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: var(--sp-5);
    align-items: start;
  }

  .page-contact .fb-rail {
    position: sticky;
    top: var(--sp-4);
  }

  .page-contact .info-board {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--sp-4);
  }

  .page-contact .fb-sec {
    padding-block: var(--sp-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb-step:hover,
  .page-contact .fb-link:hover {
    transform: none;
  }

  .page-contact .fb-rail__track .chapter-track__link,
  .page-contact .fb-step,
  .page-contact .fb-link,
  .page-contact .fb-link::after {
    transition-duration: 1ms;
  }
}
<<<END>>>