.page-contact {
  --c-hair: var(--line-600);
  --c-gap: 18px;
  --c-cyan-soft: rgba(41, 231, 214, .1);
  --c-row-pad: 14px;
}

.page-contact .crumbs {
  padding: 14px 0 2px;
}

/* ---------- 框景首屏 ---------- */
.page-contact .c-hero {
  padding-top: 14px;
}

.page-contact .c-hero__frame {
  padding: 22px 18px 24px;
}

.page-contact .c-hero__grid {
  display: grid;
  gap: 22px;
  align-items: end;
}

.page-contact .c-hero__text .eyebrow {
  color: var(--cyan-400);
  letter-spacing: .14em;
  margin: 0 0 12px;
}

.page-contact .c-hero__text h1 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(28px, 6.6vw, 46px);
  line-height: 1.14;
  letter-spacing: .01em;
  color: var(--text-hi);
  margin: 0 0 16px;
}

.page-contact .c-hero__text .lead {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-hi);
  margin: 0 0 14px;
  max-width: 46ch;
}

.page-contact .c-hero__text .meta-line {
  font-family: var(--font-num);
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-mid);
  margin: 0;
  padding-left: 12px;
  border-left: 1px solid var(--cyan-700);
}

.page-contact .c-hero__media {
  margin: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
  background: var(--ink-800);
}

.page-contact .media {
  margin: 0;
}

.page-contact .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 章节头 ---------- */
.page-contact .c-head {
  margin: 0 0 26px;
}

.page-contact .c-head .eyebrow {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--cyan-400);
  margin: 0 0 10px;
}

.page-contact .c-head h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(21px, 4.6vw, 30px);
  line-height: 1.24;
  color: var(--text-hi);
  margin: 0 0 12px;
}

.page-contact .c-head .prose {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-mid);
  margin: 0;
  max-width: 58ch;
}

/* ---------- 渠道一览 ---------- */
.page-contact .c-chan {
  display: grid;
  gap: 30px;
}

.page-contact .c-chan__cards {
  display: grid;
  gap: 14px;
}

.page-contact .c-card {
  background: var(--ink-800);
  padding: 20px 20px 22px;
  position: relative;
}

.page-contact .c-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 38px;
  height: 2px;
  background: var(--cyan-400);
}

.page-contact .c-card__tag {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--text-mid);
  margin: 4px 0 12px;
}

.page-contact .c-card__value {
  font-family: var(--font-head);
  font-weight: 500;
  font-size: clamp(16px, 4.4vw, 20px);
  line-height: 1.45;
  color: var(--text-hi);
  margin: 0 0 12px;
  overflow-wrap: anywhere;
}

.page-contact .c-card__value.num,
.page-contact .c-card__value--mail {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(17px, 4.6vw, 23px);
  letter-spacing: .01em;
}

.page-contact .c-card__value--phone {
  color: var(--cyan-400);
  letter-spacing: .07em;
}

.page-contact .c-card__value--addr {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: .02em;
}

.page-contact .c-card__note {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.72;
  color: var(--text-mid);
  margin: 0;
}

.page-contact .c-card--reg {
  background: transparent;
  padding: 16px 2px 4px;
  border-top: 1px solid var(--c-hair);
  margin-top: 6px;
}

.page-contact .c-card--reg::before {
  display: none;
}

.page-contact .c-card__regnum {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-mid);
  margin: 0 0 6px;
}

.page-contact .c-card--reg .c-card__note {
  font-size: 12px;
}

.page-contact .c-route__title {
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 17px;
  line-height: 1.4;
  color: var(--text-hi);
  margin: 0 0 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-hair);
}

.page-contact .c-route__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: route;
}

.page-contact .c-route__item {
  padding: var(--c-row-pad) 0;
  border-bottom: 1px solid var(--c-hair);
}

.page-contact .c-route__item:last-child {
  border-bottom: 0;
}

.page-contact .c-route__q {
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-hi);
  margin: 0 0 6px;
  display: flex;
  gap: 10px;
}

.page-contact .c-route__q::before {
  counter-increment: route;
  content: counter(route, decimal-leading-zero);
  font-family: var(--font-num);
  font-size: 12px;
  line-height: 1.85;
  color: var(--cyan-700);
  flex: none;
}

.page-contact .c-route__a {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-mid);
  margin: 0 0 0 26px;
}

.page-contact .c-route__a a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-contact .c-route__a a:hover {
  color: var(--text-hi);
}

/* ---------- 提交清单 ---------- */
.page-contact .c-sub {
  display: grid;
  gap: 26px;
}

.page-contact .c-sub__list {
  display: grid;
  align-content: start;
}

.page-contact .c-check {
  position: relative;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px 2px;
  border-bottom: 1px dashed var(--c-hair);
  cursor: pointer;
  transition: background var(--dur-base) var(--ease);
}

.page-contact .c-check:first-child {
  border-top: 1px dashed var(--c-hair);
}

.page-contact .c-check:hover {
  background: var(--c-cyan-soft);
}

.page-contact .c-check__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .c-check__box {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1px solid var(--c-hair);
  background: transparent;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.page-contact .c-check__box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--cyan-400);
  border-bottom: 2px solid var(--cyan-400);
  transform: rotate(45deg) scale(0);
  transform-origin: center;
  transition: transform var(--dur-fast) var(--ease);
}

.page-contact .c-check__input:checked + .c-check__box {
  border-color: var(--cyan-400);
  box-shadow: 0 0 0 3px rgba(41, 231, 214, .12);
}

.page-contact .c-check__input:checked + .c-check__box::after {
  transform: rotate(45deg) scale(1);
}

.page-contact .c-check__input:focus-visible + .c-check__box {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
}

.page-contact .c-check__text {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-hi);
  transition: color var(--dur-base) var(--ease);
}

.page-contact .c-check__text strong {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  color: var(--cyan-400);
  letter-spacing: .02em;
}

.page-contact .c-check__input:checked ~ .c-check__text {
  color: var(--text-mid);
}

.page-contact .c-sub__media {
  margin: 0;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

/* ---------- 回复时间 ---------- */
.page-contact .c-time {
  display: grid;
  gap: 14px;
  padding-top: 26px;
  border-top: 1px solid var(--c-hair);
  border-image: linear-gradient(90deg, var(--cyan-700), var(--line-600) 55%, transparent) 1;
}

.page-contact .c-time__clock {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(26px, 7vw, 40px);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--text-hi);
  margin: 0;
}

.page-contact .c-time__body h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--text-hi);
  margin: 0 0 8px;
}

.page-contact .c-time__body p {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-mid);
  margin: 0;
  max-width: 62ch;
}

/* ---------- 边界清单 ---------- */
.page-contact .c-not {
  border-top: 1px solid var(--c-hair);
}

.page-contact .c-not__item {
  border-bottom: 1px solid var(--c-hair);
  padding: 16px 0;
}

.page-contact .c-not__item summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-hi);
}

.page-contact .c-not__item summary::-webkit-details-marker {
  display: none;
}

.page-contact .c-not__item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 16px;
  color: var(--cyan-400);
  transition: transform var(--dur-base) var(--ease);
}

.page-contact .c-not__item[open] summary::after {
  transform: rotate(45deg);
}

.page-contact .c-not__item p {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-mid);
  margin: 12px 0 0;
  max-width: 62ch;
}

.page-contact .c-not__item p a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* ---------- 延伸阅读 ---------- */
.page-contact .c-next__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(19px, 4.2vw, 26px);
  line-height: 1.3;
  color: var(--text-hi);
  margin: 0 0 20px;
}

.page-contact .c-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .c-next__list a {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 16px 0;
  border-top: 1px solid var(--c-hair);
  text-decoration: none;
  transition: background var(--dur-base) var(--ease);
}

.page-contact .c-next__list a:hover {
  background: var(--c-cyan-soft);
}

.page-contact .c-next__idx {
  grid-row: 1 / span 2;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 13px;
  line-height: 1.7;
  color: var(--cyan-700);
}

.page-contact .c-next__txt {
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.4;
  color: var(--text-hi);
}

.page-contact .c-next__desc {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mid);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .c-hero__frame {
    padding: 28px 26px 30px;
  }

  .page-contact .c-card {
    padding: 24px 26px 26px;
  }

  .page-contact .c-sub__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 26px;
  }

  .page-contact .c-check:first-child {
    border-top: 0;
  }

  .page-contact .c-check:nth-child(1),
  .page-contact .c-check:nth-child(2) {
    border-top: 1px dashed var(--c-hair);
  }
}

@media (min-width: 900px) {
  .page-contact .c-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    gap: 34px;
  }

  .page-contact .c-hero__frame {
    padding: 34px 34px 36px;
  }

  .page-contact .c-chan {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact .c-chan__route {
    padding-left: 32px;
    border-left: 1px solid var(--c-hair);
  }

  .page-contact .c-route__title {
    margin-top: 2px;
  }

  .page-contact .c-sub {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact .c-time {
    grid-template-columns: minmax(0, auto) minmax(0, 1fr);
    gap: 32px;
    align-items: baseline;
  }

  .page-contact .c-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

@media (min-width: 1200px) {
  .page-contact .c-hero__text .lead {
    font-size: 16px;
  }

  .page-contact .c-chan {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 56px;
  }

  .page-contact .c-chan__route {
    padding-left: 44px;
  }

  .page-contact .c-check {
    padding: 17px 2px;
  }

  .page-contact .c-not__item {
    padding: 20px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .c-check,
  .page-contact .c-check__box,
  .page-contact .c-check__box::after,
  .page-contact .c-check__text,
  .page-contact .c-not__item summary::after,
  .page-contact .c-next__list a {
    transition-duration: 120ms;
  }
}
</main>