.page-contact {
  --ct-paper-line: #D5CAB1;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-contact .ct-crumbs {
  padding: 18px 0 0;
  font-size: 13px;
  color: var(--mist);
}

.page-contact .ct-crumbs a {
  color: var(--mist);
  text-decoration: none;
}

.page-contact .ct-crumbs a:hover,
.page-contact .ct-crumbs a:focus-visible {
  color: var(--lime);
}

.page-contact .ct-crumbs span[aria-current="page"] {
  color: var(--paper);
}

/* ---------- hero ---------- */
.page-contact .ct-hero {
  padding: 26px 0 56px;
  background:
    radial-gradient(115% 85% at 82% -6%, rgba(110, 31, 38, 0.42) 0%, rgba(10, 27, 20, 0) 62%),
    var(--ink);
}

.page-contact .ct-hero__grid {
  display: grid;
  gap: 34px;
}

.page-contact .ct-hero__main h1 {
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: clamp(32px, 8vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 14px 0 18px;
}

.page-contact .ct-hero__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 46ch;
}

.page-contact .ct-channels {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-contact .ct-channel {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-contact .ct-channel:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-channel__num {
  font-family: var(--ff-num);
  font-size: 40px;
  font-weight: 700;
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-contact .ct-channel__body {
  min-width: 0;
}

.page-contact .ct-channel__name {
  margin: 0 0 4px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-contact .ct-channel__val {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
  letter-spacing: -0.01em;
  word-break: break-word;
}

.page-contact .ct-channel__val a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1.5px;
}

.page-contact .ct-channel__val.num {
  font-family: var(--ff-num);
  font-size: 26px;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.page-contact .ct-channel__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .ct-channel__more {
  display: inline-block;
  margin-top: 10px;
  min-height: 44px;
  padding: 10px 0;
  font-size: 13px;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-channel__more:hover,
.page-contact .ct-channel__more:focus-visible {
  border-bottom-color: var(--lime);
}

/* ---------- brief panel ---------- */
.page-contact .ct-hero__side {
  min-width: 0;
}

.page-contact .ct-brief {
  position: relative;
  margin-top: 18px;
  padding: 26px 20px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 2px;
  box-shadow: var(--shadow);
}

.page-contact .ct-brief::before {
  content: "";
  position: absolute;
  left: -1px;
  right: -1px;
  top: -1px;
  height: 6px;
  background: var(--stand);
  border-radius: 2px 2px 0 0;
}

.page-contact .ct-brief__title {
  margin: 4px 0 6px;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .ct-brief__sub {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .ct-brief__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-contact .ct-brief__list label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 44px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  background: rgba(10, 27, 20, 0.6);
  font-size: 14px;
  line-height: 1.55;
  color: var(--paper);
  cursor: pointer;
  transition: border-color var(--dur), background var(--dur);
}

.page-contact .ct-brief__list label:hover {
  border-color: var(--lime);
}

.page-contact .ct-brief__list input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 1px 0 0;
  border: 1px solid var(--line);
  background: var(--ink);
  border-radius: 1px;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background var(--dur), border-color var(--dur);
}

.page-contact .ct-brief__list input[type="checkbox"]::after {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg) translateY(-1px);
  opacity: 0;
}

.page-contact .ct-brief__list input[type="checkbox"]:checked {
  background: var(--lime);
  border-color: var(--lime);
}

.page-contact .ct-brief__list input[type="checkbox"]:checked::after {
  opacity: 1;
}

.page-contact .ct-brief__list input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ---------- mail section ---------- */
.page-contact .ct-mail {
  padding: 54px 0;
  background: var(--panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-head {
  display: grid;
  gap: 14px;
}

.page-contact .ct-head h2 {
  margin: 8px 0 10px;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: clamp(26px, 5.6vw, 34px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .ct-head__lead {
  margin: 0;
  max-width: 56ch;
  font-family: var(--ff-serif);
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .ct-mail .filterbar {
  margin-top: 22px;
}

.page-contact .ct-mailgrid {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .ct-mailcard {
  padding: 20px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 2px;
  box-shadow: var(--shadow);
  transition: transform var(--dur), border-color var(--dur);
}

.page-contact .ct-mailcard:hover {
  transform: translateY(-2px);
  border-color: var(--lime);
}

.page-contact .ct-mailcard h3 {
  margin: 12px 0 8px;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .ct-mailcard__intro {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .ct-mailcard__pts {
  list-style: none;
  margin: 14px 0 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 8px;
}

.page-contact .ct-mailcard__pts li {
  position: relative;
  padding-left: 15px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .ct-mailcard__pts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 1.5px;
  background: var(--amber);
}

/* ---------- paper section ---------- */
.page-contact .ct-paper {
  padding: 54px 0;
  background: var(--paper);
  color: var(--paperink);
}

.page-contact .ct-paper h2 {
  margin: 0 0 14px;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: clamp(24px, 5.4vw, 32px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--paperink);
}

.page-contact .ct-split {
  display: grid;
  gap: 40px;
}

.page-contact .ct-reply__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paperink);
  max-width: 46ch;
}

.page-contact .ct-clock {
  display: block;
  width: 100%;
  height: auto;
  margin: 18px 0 10px;
  border: 1px solid var(--ct-paper-line);
  background: var(--paper);
  padding: 8px 10px;
}

.page-contact .ct-clock text {
  font-family: var(--ff-num);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.page-contact .ct-reply__note {
  margin: 0;
  padding: 14px 16px;
  border-left: 3px solid var(--stand);
  background: var(--paper-2);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paperink);
}

.page-contact .ct-addr__box {
  padding: 20px;
  border: 1px solid var(--ct-paper-line);
  background: var(--paper-2);
}

.page-contact .ct-addr__label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--stand);
}

.page-contact .ct-addr__val {
  margin: 0 0 12px;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--paperink);
}

.page-contact .ct-addr__desc {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--paperink);
}

.page-contact .ct-addr__desc:last-child {
  margin-bottom: 0;
}

.page-contact .ct-addr__fig {
  margin: 18px 0 0;
}

/* ---------- collaborate ---------- */
.page-contact .ct-collab {
  position: relative;
  padding: 60px 0 54px;
  background: var(--ink);
  overflow: hidden;
}

.page-contact .ct-collab::before {
  content: "";
  position: absolute;
  left: -2%;
  right: -2%;
  top: 0;
  height: 8px;
  background: var(--stand);
  transform: rotate(-2.2deg);
  transform-origin: center;
}

.page-contact .ct-collab__grid {
  display: grid;
  gap: 32px;
}

.page-contact .ct-collab h2 {
  margin: 10px 0 14px;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: clamp(26px, 5.6vw, 34px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .ct-collab__lead {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 52ch;
}

.page-contact .ct-collab__pts {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .ct-collab__pts li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .ct-collab__pts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1.5px;
  background: var(--lime);
}

.page-contact .ct-collab__box {
  padding: 24px 22px;
  background: linear-gradient(158deg, rgba(110, 31, 38, 0.5) 0%, rgba(74, 20, 24, 0.28) 100%);
  border: 1px solid var(--stand);
  border-radius: 2px;
  box-shadow: var(--shadow);
}

.page-contact .ct-collab__boxtag {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .ct-collab__boxtitle {
  margin: 0 0 10px;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .ct-collab__boxdesc {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .ct-collab__box .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.page-contact .ct-collab__boxnote {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist);
  word-break: break-word;
}

.page-contact .ct-next {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-contact .ct-next__label {
  margin: 0 0 14px;
  font-family: var(--ff-serif);
  font-size: 15px;
  color: var(--mist);
}

.page-contact .ct-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- responsive ---------- */
@media (min-width: 620px) {
  .page-contact .ct-mailgrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .ct-hero {
    padding: 34px 0 72px;
  }

  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 52px;
    align-items: start;
  }

  .page-contact .ct-channel {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 20px;
    padding: 22px 0;
  }

  .page-contact .ct-channel__num {
    font-size: 64px;
  }

  .page-contact .ct-channel__val {
    font-size: 19px;
  }

  .page-contact .ct-channel__val.num {
    font-size: 32px;
  }

  .page-contact .ct-mail {
    padding: 72px 0;
  }

  .page-contact .ct-head {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-contact .ct-mailgrid {
    margin-top: 26px;
    gap: 18px;
  }

  .page-contact .ct-paper {
    padding: 72px 0;
  }

  .page-contact .ct-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 52px;
    align-items: start;
  }

  .page-contact .ct-collab {
    padding: 80px 0 68px;
  }

  .page-contact .ct-collab__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    gap: 46px;
    align-items: start;
  }

  .page-contact .ct-collab__box .btn {
    width: auto;
    min-width: 180px;
  }
}

@media (min-width: 1080px) {
  .page-contact .ct-mailgrid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-mailcard,
  .page-contact .ct-brief__list label {
    transition: none;
  }

  .page-contact .ct-mailcard:hover {
    transform: none;
  }
}