.page-contact {
  --card-pad: clamp(1rem, 3vw, 1.6rem);
  --hair: 2px solid var(--ink-600);
}

.page-contact .crumb {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

.page-contact .crumb__here {
  color: var(--chalk);
  font-weight: 600;
}

/* ---------- 页首 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(1.25rem, 4vw, 2.5rem);
}

.page-contact .contact-hero__copy {
  position: relative;
  padding-left: clamp(.9rem, 2.5vw, 1.75rem);
}

.page-contact .contact-hero__copy::before {
  content: "";
  position: absolute;
  left: 0;
  top: .35rem;
  bottom: .6rem;
  width: 6px;
  background: linear-gradient(180deg, var(--cyan) 0 42%, var(--orange) 42% 100%);
}

.page-contact .contact-hero__title {
  margin: .5rem 0 .9rem;
  font-size: clamp(1.6rem, 6.4vw, 2.9rem);
  line-height: 1.06;
  max-width: 24ch;
}

.page-contact .contact-hero .lede {
  max-width: 64ch;
}

.page-contact .contact-hero__bar {
  position: relative;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  border: 2px solid var(--ink-600);
  box-shadow: var(--hard);
  overflow: hidden;
  background: var(--ink-950);
}

.page-contact .contact-hero__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1600 / 240;
  object-fit: cover;
  opacity: .72;
  filter: contrast(1.15) saturate(.7);
}

.page-contact .contact-hero__bar::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 245, 212, .07) 0 1px,
    transparent 1px 5px
  );
}

.page-contact .contact-hero__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  background: var(--cyan);
  color: var(--ink-950);
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .08em;
  padding: .4rem .8rem;
}

/* ---------- 通用区块 ---------- */
.page-contact .section {
  padding-top: clamp(2.5rem, 7vw, 4.5rem);
}

.page-contact .section__title {
  margin: .35rem 0 .6rem;
  font-size: clamp(1.35rem, 4.6vw, 2.1rem);
  line-height: 1.12;
}

.page-contact .section__head .meta {
  max-width: 66ch;
}

/* ---------- 渠道 + 清单 双列 ---------- */
.page-contact .contact-split {
  display: grid;
  gap: 1.5rem;
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-contact .chan {
  position: relative;
  border: 2px solid var(--ink-600);
  background: var(--ink-800);
  box-shadow: var(--hard);
  padding: var(--card-pad);
  transition: border-color .18s linear;
}

.page-contact .chan + .chan {
  margin-top: 1.25rem;
}

.page-contact .chan:hover,
.page-contact .chan:focus-within {
  border-color: var(--cyan);
}

.page-contact .chan__idx {
  margin: 0;
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-contact .chan__name {
  margin: .35rem 0 .5rem;
  font-family: var(--cond);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--chalk);
}

.page-contact .chan__value {
  display: inline-block;
  max-width: 100%;
  font-family: var(--mono);
  font-size: clamp(1rem, 4.6vw, 1.4rem);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--chalk);
  text-decoration: none;
  border-bottom: 2px solid var(--ink-600);
  padding-bottom: .15rem;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .chan__value:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .chan__value:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-contact .chan__for {
  margin: .85rem 0 .6rem;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .chan__note {
  margin: 0;
  font-size: .84rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-contact .chan__note strong {
  display: inline-block;
  margin-right: .4rem;
  padding: 0 .35rem;
  background: var(--dim-cyan);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .06em;
}

/* ---------- 清单 ---------- */
.page-contact .checklist__head {
  margin: 0 0 .5rem;
  font-family: var(--cond);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--chalk);
}

.page-contact .checklist__lead {
  margin: 0 0 1.1rem;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--hair);
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 3.1rem minmax(0, 1fr);
  gap: .35rem;
  padding: .95rem 0;
  border-bottom: var(--hair);
}

.page-contact .checklist__num {
  padding-top: .18rem;
  font-family: var(--mono);
  font-size: .82rem;
  font-weight: 800;
  color: var(--cyan);
}

.page-contact .checklist__title {
  margin: 0 0 .28rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--chalk);
}

.page-contact .checklist__body {
  margin: 0;
  font-size: .92rem;
  line-height: 1.72;
  color: var(--steel);
}

/* ---------- 合作 ---------- */
.page-contact .coop {
  display: grid;
  gap: 1.75rem;
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-contact .coop__sub {
  margin: 0 0 .75rem;
  font-family: var(--cond);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--relay);
}

.page-contact .coop__sub--gap {
  margin-top: 2rem;
}

.page-contact .coop__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--hair);
}

.page-contact .coop__item {
  padding: .9rem 0;
  border-bottom: var(--hair);
}

.page-contact .coop__label {
  margin: 0 0 .3rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--chalk);
}

.page-contact .coop__desc {
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .mats {
  list-style: none;
  margin: 0;
  padding: .9rem 1rem;
  background: var(--ink-800);
  border: 2px solid var(--ink-600);
  counter-reset: mats;
}

.page-contact .mats__item {
  position: relative;
  padding: .45rem 0 45rem;
  padding: .45rem 0 .45rem 1.6rem;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--steel);
  counter-increment: mats;
}

.page-contact .mats__item::before {
  content: counter(mats, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .45rem;
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 800;
  color: var(--relay);
}

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

.page-contact .coop__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 700;
  object-fit: cover;
}

/* ---------- 响应边界 ---------- */
.page-contact .bound-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-contact .bound {
  border: 2px solid var(--ink-600);
  border-left: 6px solid var(--turf);
  background: var(--ink-800);
  box-shadow: var(--hard);
  padding: var(--card-pad);
}

.page-contact .bound--limit {
  border-left-color: var(--orange);
}

.page-contact .bound__title {
  margin: 0 0 .8rem;
  font-family: var(--cond);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--chalk);
}

.page-contact .bound__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .bound__list li {
  position: relative;
  padding: .5rem 0 .5rem 1.1rem;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--steel);
  border-top: 1px solid var(--ink-600);
}

.page-contact .bound__list li:first-child {
  border-top: 0;
}

.page-contact .bound__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .98rem;
  width: 6px;
  height: 2px;
  background: var(--relay);
}

.page-contact .bound--limit .bound__list li::before {
  background: var(--orange);
}

.page-contact .bound__foot {
  margin: 1.5rem 0 0;
  line-height: 1.8;
}

.page-contact .bound__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-600);
}

.page-contact .bound__foot a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 备案条 ---------- */
.page-contact .contact-band {
  margin-top: clamp(3rem, 8vw, 5rem);
  background: var(--ink-950);
  border-top: 2px solid var(--ink-600);
}

.page-contact .contact-band__inner {
  display: grid;
  gap: 1.25rem;
  padding: clamp(1.75rem, 4vw, 2.75rem) 0 1.25rem;
}

.page-contact .band-record {
  margin: .4rem 0 0;
  font-family: var(--mono);
  font-size: clamp(1.1rem, 4.4vw, 1.7rem);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--chalk);
  overflow-wrap: anywhere;
}

.page-contact .band-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .5rem;
}

.page-contact .band-facts li {
  position: relative;
  padding-left: .9rem;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .band-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .85rem;
  width: 5px;
  height: 5px;
  background: var(--cyan);
}

.page-contact .band-links {
  margin: 0;
  padding: 0 0 clamp(1.75rem, 4vw, 2.5rem);
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  align-items: center;
  font-size: .85rem;
  color: var(--steel);
}

.page-contact .band-links a {
  color: var(--relay);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .band-links a:hover {
  border-bottom-color: var(--relay);
}

.page-contact .band-links a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .bound-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1.75rem;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 2rem;
    align-items: start;
  }

  .page-contact .coop {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-contact .contact-band__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 2rem;
    align-items: center;
  }
}

@media (min-width: 1240px) {
  .page-contact .contact-split {
    gap: 2.75rem;
  }

  .page-contact .checklist__item {
    padding: 1.05rem 0;
  }
}

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