.page-contact {
  --contact-paper-ink-soft: rgba(18, 33, 28, 0.76);
  --contact-hair: 1px solid rgba(43, 232, 200, 0.14);
  padding-bottom: clamp(2rem, 6vw, 4rem);
}

/* ---------- 页头 ---------- */
.page-contact .page-head {
  max-width: 54rem;
  margin-bottom: clamp(1.75rem, 5vw, 3rem);
}
.page-contact .page-head .eyebrow {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--cyan);
}
.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.6rem;
  margin: 0 0 1.1rem;
  font-size: 0.85rem;
  color: var(--mute);
}
.page-contact .crumbs__item { display: inline-flex; align-items: center; }
.page-contact .crumbs__item + .crumbs__item::before {
  content: "/";
  margin-right: 0.6rem;
  color: var(--mute);
}
.page-contact .crumbs__link {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
.page-contact .crumbs__link:hover { color: var(--cyan); }
.page-contact .crumbs__current { color: var(--mute); }
.page-contact h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6.4vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--paper);
}
.page-contact .page-head__lede {
  margin: 0;
  max-width: 44rem;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 章节通用 ---------- */
.page-contact .band { margin-top: clamp(2.5rem, 7vw, 5rem); }
.page-contact .chapter {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(0.85rem, 3vw, 2rem);
  align-items: start;
  margin-bottom: clamp(1.25rem, 3.5vw, 2rem);
}
.page-contact .chapter__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2.2rem, 7vw, 4rem);
  line-height: 0.88;
  color: rgba(43, 232, 200, 0.18);
  -webkit-text-stroke: 1px var(--cyan-dim);
}
.page-contact .chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.8vw, 2.35rem);
  line-height: 1.12;
  color: var(--paper);
}
.page-contact .chapter__meta {
  margin: 0.55rem 0 0;
  max-width: 46rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--mist);
}
.page-contact .chapter__sub {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  line-height: 1.2;
  color: var(--paper);
}

/* ---------- 联系渠道 + 提交清单 ---------- */
.page-contact .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
}
.page-contact .channel-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.4rem 1.35rem 1.5rem;
  border-radius: var(--radius-l);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-contact .channel:hover { transform: translateY(-3px); }
.page-contact .channel--paper { background: var(--paper); color: var(--paper-ink); }
.page-contact .channel--board {
  background: var(--board);
  border: var(--contact-hair);
  color: var(--mist);
}
.page-contact .channel--tall { min-height: 11.5rem; }
.page-contact .channel--mid { min-height: 9.5rem; }
.page-contact .channel--short { min-height: 8rem; }
.page-contact .channel__num {
  align-self: flex-start;
  padding: 0.18rem 0.55rem;
  border-radius: var(--radius-pill);
  background: var(--orange);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}
.page-contact .channel__title {
  margin: 0.35rem 0 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.page-contact .channel--board .channel__title { color: var(--paper); }
.page-contact .channel__value {
  margin: 0;
  font-size: clamp(1.05rem, 2.2vw, 1.32rem);
  font-weight: 700;
  line-height: 1.4;
  overflow-wrap: anywhere;
}
.page-contact .channel--paper .channel__value { color: var(--paper-ink); }
.page-contact .channel--board .channel__value { color: var(--cyan); }
.page-contact .channel__desc {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.72;
}
.page-contact .channel--paper .channel__desc { color: var(--contact-paper-ink-soft); }
.page-contact .channel--board .channel__desc { color: var(--mist); }
.page-contact .channel__meta {
  margin: auto 0 0;
  padding-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--orange);
}
.page-contact .channel--paper .channel__meta { color: var(--cyan-dim); }

.page-contact .contact-brief {
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 4vw, 2.25rem);
}

/* ---------- 媒体 ---------- */
.page-contact .media {
  margin: 0;
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--board);
  border: var(--contact-hair);
}
.page-contact .media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-contact .media--wide img { aspect-ratio: 3 / 2; }
.page-contact .media--tall img { aspect-ratio: 3 / 4; }
.page-contact .media__caption {
  padding: 0.7rem 1rem 0.8rem;
  font-size: 0.78rem;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--mute);
}

/* ---------- 提交清单 ---------- */
.page-contact .brief__lede {
  margin: 0.7rem 0 0;
  max-width: 42rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--mist);
}
.page-contact .checklist {
  list-style: none;
  margin: 1.15rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}
.page-contact .check label {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  padding: 0.72rem 0.9rem;
  border-radius: var(--radius-m);
  background: var(--board);
  border: var(--contact-hair);
  font-size: 0.93rem;
  line-height: 1.62;
  color: var(--mist);
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-contact .check label:hover {
  background: var(--raise);
  border-color: var(--cyan-dim);
}
.page-contact .check input {
  flex: 0 0 auto;
  width: 1.05rem;
  height: 1.05rem;
  margin: 0.24rem 0 0;
  accent-color: var(--cyan);
}
.page-contact .check label:has(input:checked) {
  border-color: var(--cyan);
  color: var(--paper);
}

/* ---------- 处理流程 ---------- */
.page-contact .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}
.page-contact .step {
  padding: 1.2rem 1.15rem 1.1rem;
  border-radius: var(--radius-m);
  background: var(--board);
  border: var(--contact-hair);
  outline: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-contact .step:hover,
.page-contact .step:focus-visible {
  background: var(--raise);
  border-color: var(--cyan-dim);
}
.page-contact .step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}
.page-contact .step__title {
  margin: 0.55rem 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--paper);
}
.page-contact .step__desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.68;
  color: var(--mist);
}
.page-contact .step__note {
  margin: 0.55rem 0 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.6;
  color: var(--cyan);
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.page-contact .step:hover .step__note,
.page-contact .step:focus-visible .step__note,
.page-contact .step:focus-within .step__note {
  max-height: 5rem;
  opacity: 1;
}
@media (hover: none) {
  .page-contact .step__note { max-height: 5rem; opacity: 1; }
}

/* ---------- 合作 ---------- */
.page-contact .coop {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
}
.page-contact .coop__item {
  padding: 1rem 0 1rem 1.15rem;
  border-left: 2px solid rgba(43, 232, 200, 0.28);
  transition: border-color var(--dur) var(--ease);
}
.page-contact .coop__item:hover { border-color: var(--orange); }
.page-contact .coop__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--paper);
}
.page-contact .coop__desc {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--mist);
}
.page-contact .coop__need {
  margin: 0.55rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--orange-soft);
}

/* ---------- 时效与服务范围 ---------- */
.page-contact .facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}
.page-contact .fact {
  padding: 1rem 1.05rem;
  border-radius: var(--radius-m);
  background: var(--board);
  border: var(--contact-hair);
}
.page-contact .fact__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3.2vw, 1.7rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--cyan);
}
.page-contact .fact__value--signal { color: var(--orange); }
.page-contact .fact__label {
  margin: 0.45rem 0 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--mist);
}
.page-contact .scope { margin-top: clamp(1.25rem, 3vw, 1.9rem); }
.page-contact .scope__label {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--mute);
}
.page-contact .scope .chip {
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  border: var(--contact-hair);
  background: var(--board);
  font-size: 0.86rem;
  color: var(--mist);
}
.page-contact .scope__note {
  margin: 1rem 0 0;
  max-width: 46rem;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--mute);
}

/* ---------- 到访与邮寄 ---------- */
.page-contact .visit {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 4vw, 2.25rem);
  align-items: end;
}
.page-contact .visit__text p {
  margin: 0 0 0.9rem;
  font-size: 0.97rem;
  line-height: 1.8;
  color: var(--mist);
}
.page-contact .visit__addr {
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  font-weight: 700;
  color: var(--paper);
}
.page-contact .visit__link { margin-bottom: 0; }
.page-contact .link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 232, 200, 0.35);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-contact .link:hover {
  color: var(--orange-soft);
  border-color: var(--orange);
}

/* ---------- 自助入口 ---------- */
.page-contact .selfserve {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}
.page-contact .selfcard {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.4rem 1.35rem 1.5rem;
  border-radius: var(--radius-l);
  background: var(--board);
  border: var(--contact-hair);
  text-decoration: none;
  color: inherit;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-contact .selfcard:hover {
  background: var(--raise);
  border-color: var(--cyan);
}
.page-contact .selfcard__label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}
.page-contact .selfcard__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.8vw, 1.5rem);
  font-weight: 700;
  line-height: 1.22;
  color: var(--paper);
}
.page-contact .selfcard__desc {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--mist);
}
.page-contact .selfcard__go {
  margin-top: auto;
  padding-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--orange);
}

/* ---------- 页尾说明 ---------- */
.page-contact .page-contact__note {
  margin: clamp(2.5rem, 7vw, 4rem) 0 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--mute);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.15rem; }
  .page-contact .coop { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem 2rem; }
  .page-contact .facts { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-contact .selfserve { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
}

@media (min-width: 900px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(1.75rem, 4vw, 3rem);
  }
  .page-contact .channel-stack { gap: 1.25rem; }
  .page-contact .channel--tall { min-height: 13rem; }
  .page-contact .channel--mid { min-height: 10.5rem; margin-right: 1.75rem; }
  .page-contact .channel--short { min-height: 8.5rem; margin-left: 1.5rem; }
}

@media (min-width: 1100px) {
  .page-contact .steps { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 880px) {
  .page-contact .visit { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
  .page-contact .visit .media { align-self: end; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel:hover,
  .page-contact .step,
  .page-contact .selfcard { transition: none; }
  .page-contact .channel:hover { transform: none; }
}
<<<END>>>