.page-contact {
  --c-hair: 1px solid var(--line);
  background: var(--void);
  color: var(--ink);
}

/* ---------- hero ---------- */
.page-contact .c-hero {
  position: relative;
  padding: 26px 0 50px;
  overflow: hidden;
}

.page-contact .c-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.32;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 74%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 74%);
}

.page-contact .c-hero::after {
  content: "";
  position: absolute;
  top: -140px;
  right: -100px;
  width: 380px;
  height: 380px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(53, 240, 220, 0.13), transparent 68%);
}

.page-contact .c-hero .shell {
  position: relative;
  z-index: 1;
}

.page-contact .c-hero__title {
  margin: 18px 0 0;
  font-size: clamp(38px, 7.4vw, 92px);
  line-height: 1.04;
}

.page-contact .c-hero__lede {
  max-width: 60ch;
  margin: 22px 0 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .c-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .c-hero__facts li {
  padding: 8px 15px;
  border: 1px solid var(--line);
  background: rgba(16, 26, 56, 0.55);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.page-contact .c-hero__facts .num {
  color: var(--cyan);
}

/* ---------- section rhythm ---------- */
.page-contact .sec {
  padding: 54px 0;
  border-top: var(--c-hair);
}

/* ---------- channels ---------- */
.page-contact .channels {
  display: grid;
  gap: 1px;
  margin-top: 34px;
  border: var(--c-hair);
  background: var(--line);
}

.page-contact .chan {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 200px;
  padding: 28px 22px 30px;
  overflow: hidden;
  background: var(--panel);
}

.page-contact .chan--mail {
  min-height: 300px;
  background: var(--indigo);
}

.page-contact .chan__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: saturate(0.55) contrast(1.05);
  pointer-events: none;
}

.page-contact .chan--mail::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(158deg, rgba(36, 26, 85, 0.42) 0%, rgba(10, 10, 28, 0.86) 60%, rgba(10, 10, 28, 0.97) 100%);
}

.page-contact .chan > *:not(.chan__bg) {
  position: relative;
  z-index: 2;
}

.page-contact .chan__tag {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-contact .chan__idx {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .chan__value {
  margin: 18px 0 0;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(18px, 2.3vw, 25px);
  letter-spacing: -0.01em;
  line-height: 1.35;
  color: var(--ink);
  word-break: break-all;
}

.page-contact .chan__fit {
  max-width: 48ch;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .chan__meta {
  margin: auto 0 0;
  padding-top: 20px;
  border-top: var(--c-hair);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .chan__meta a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .chan__meta a:hover {
  color: var(--orange);
}

/* ---------- figure ---------- */
.page-contact .contact-figure {
  margin: 28px 0 0;
  border: var(--c-hair);
  background: var(--void-deep);
}

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .contact-figure figcaption {
  padding: 14px 18px;
  border-top: var(--c-hair);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- topic index ---------- */
.page-contact .topics {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--c-hair);
}

.page-contact .topics__item {
  border-bottom: var(--c-hair);
}

.page-contact .topic__sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 19px 4px;
  cursor: pointer;
  list-style: none;
}

.page-contact .topic__sum::-webkit-details-marker {
  display: none;
}

.page-contact .topic__sum:hover .topic__name,
.page-contact .topic__sum:focus-visible .topic__name {
  color: var(--cyan);
}

.page-contact .topic__idx {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-contact .topic__name {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  transition: color 180ms var(--ease);
}

.page-contact .topic__cue {
  width: 9px;
  height: 9px;
  border-right: 1.5px solid var(--cyan);
  border-bottom: 1.5px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 220ms var(--ease);
}

.page-contact .topic[open] .topic__cue {
  transform: rotate(-135deg);
}

.page-contact .topic__body {
  padding: 0 4px 22px 0;
}

.page-contact .topic__q {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .topic__q li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .topic__q li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 1px;
  background: var(--orange);
}

/* ---------- service hours rail ---------- */
.page-contact .rail {
  display: grid;
  gap: 0;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .rail__stop {
  position: relative;
  padding: 0 0 26px 24px;
  border-left: var(--c-hair);
}

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

.page-contact .rail__dot {
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 240, 220, 0.12);
}

.page-contact .rail__time {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-contact .rail__name {
  display: block;
  margin-top: 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .rail__pop {
  display: block;
  max-width: 36ch;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- operator ---------- */
.page-contact .operator {
  display: grid;
  gap: 26px;
  padding: 28px 22px;
  border: var(--c-hair);
  background: var(--archive);
}

.page-contact .operator__text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .operator__text a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .operator__text a:hover {
  color: var(--orange);
}

.page-contact .operator__data {
  display: grid;
  gap: 1px;
  margin: 0;
  border: var(--c-hair);
  background: var(--line);
}

.page-contact .operator__row {
  padding: 16px 18px;
  background: rgba(10, 10, 28, 0.62);
}

.page-contact .operator__row dt {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-contact .operator__row dd {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-contact .operator__row dd.num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- closing grid band ---------- */
.page-contact .grid-band {
  height: 54px;
  border-top: var(--c-hair);
  background-image: linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 100%;
  opacity: 0.75;
}

/* ---------- focus ---------- */
.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

/* ---------- responsive ---------- */
@media (min-width: 880px) {
  .page-contact .sec {
    padding: 72px 0;
  }

  .page-contact .channels {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-contact .chan {
    padding: 34px 32px 36px;
  }

  .page-contact .chan--call {
    align-self: end;
    min-height: 232px;
  }

  .page-contact .topic__sum {
    padding: 22px 8px;
  }

  .page-contact .topic__body {
    padding: 0 8px 24px 38px;
  }

  .page-contact .rail {
    position: relative;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
    padding-top: 22px;
  }

  .page-contact .rail::before {
    content: "";
    position: absolute;
    top: 4px;
    left: 4px;
    right: 4px;
    height: 1px;
    background: var(--line);
  }

  .page-contact .rail__stop {
    padding: 0;
    border-left: 0;
  }

  .page-contact .rail__dot {
    left: 0;
    top: -22px;
  }

  .page-contact .operator {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
    padding: 38px 34px;
  }
}

@media (min-width: 1100px) {
  .page-contact .c-hero {
    padding: 34px 0 64px;
  }

  .page-contact .chan--mail {
    min-height: 328px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .topic__cue,
  .page-contact .topic__name {
    transition: none;
  }
}