.page-contact {
  --pc-gap: clamp(1.25rem, 3.5vw, 2.5rem);
  --pc-edge: 1px solid var(--steel);
  --pc-soft: 1px solid rgba(58, 58, 64, .65);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(1.25rem, 4vw, 2.5rem) clamp(2rem, 6vw, 4rem);
  background:
    radial-gradient(130% 90% at 88% -10%, rgba(213, 31, 43, .2), transparent 62%),
    radial-gradient(70% 60% at 0% 0%, rgba(24, 224, 208, .07), transparent 58%);
  border-bottom: var(--pc-edge);
}

.page-contact .contact-hero .breadcrumbs {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--mist);
  margin-bottom: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-contact .contact-hero .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.page-contact .contact-hero .breadcrumbs a:hover,
.page-contact .contact-hero .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

.page-contact .contact-hero .breadcrumbs [aria-current="page"] {
  color: var(--paper);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 5vw, 3rem);
  align-items: start;
}

.page-contact .contact-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 7.4vw, 4.4rem);
  font-weight: 700;
  line-height: .98;
  letter-spacing: -.01em;
  color: var(--paper);
  margin: .8rem 0 0;
  text-wrap: balance;
}

.page-contact .contact-hero__intro {
  margin: clamp(1rem, 2.6vw, 1.5rem) 0 0;
  max-width: 48ch;
  font-size: clamp(.98rem, 2.2vw, 1.08rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .contact-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: clamp(1.25rem, 3vw, 1.8rem);
}

.page-contact .contact-hero__panel {
  position: relative;
  background: var(--night);
  border: var(--pc-edge);
  border-left: 3px solid var(--red);
  padding: clamp(1.1rem, 3vw, 1.75rem);
  box-shadow: 0 24px 50px -38px rgba(0, 0, 0, .95);
}

.page-contact .contact-hero__panel::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 42px;
  height: 42px;
  border-right: 1px solid var(--red);
  border-bottom: 1px solid var(--red);
  opacity: .7;
  pointer-events: none;
}

.page-contact .contact-hero__panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: .9rem;
  border-bottom: var(--pc-edge);
}

.page-contact .contact-hero__panel-tag {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .18em;
  color: var(--lime);
}

.page-contact .contact-line {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "key copy"
    "val copy";
  gap: .35rem .85rem;
  padding-block: 1rem;
  border-bottom: var(--pc-edge);
}

.page-contact .contact-line__key {
  grid-area: key;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-contact .contact-line__val {
  grid-area: val;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 3.1vw, 1.18rem);
  line-height: 1.4;
  color: var(--paper);
  text-decoration: none;
  word-break: break-word;
  transition: color .18s var(--ease);
}

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

.page-contact .contact-line .copy-btn {
  grid-area: copy;
  align-self: center;
  appearance: none;
  cursor: pointer;
  border: 1px solid var(--steel);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  padding: .42rem .7rem;
  transition: border-color .18s var(--ease), background .18s var(--ease), color .18s var(--ease);
}

.page-contact .contact-line .copy-btn:hover,
.page-contact .contact-line .copy-btn:focus-visible {
  border-color: var(--cyan);
  background: rgba(24, 224, 208, .09);
}

.page-contact .contact-line .copy-btn[data-copied] {
  color: var(--lime);
  border-color: var(--lime);
}

.page-contact .contact-hero__hours {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin: 1rem 0 0;
  font-size: .86rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .contact-hero__dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(24, 224, 208, .14);
}

/* ---------- 问题类型标签页 ---------- */
.page-contact .contact-types .section__head {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-contact .contact-tabs {
  display: grid;
  gap: clamp(1rem, 3vw, 1.75rem);
  margin-top: clamp(1.25rem, 4vw, 2rem);
}

.page-contact .contact-tabs .tabs__list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.page-contact .contact-tabs .tabs__btn {
  appearance: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  background: var(--night);
  border: var(--pc-edge);
  border-left: 3px solid transparent;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 600;
  padding: .95rem 1.05rem;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease), transform .18s var(--ease);
}

.page-contact .contact-tabs .tabs__btn:hover {
  color: var(--paper);
  transform: translateX(2px);
}

.page-contact .contact-tabs .tabs__btn[aria-selected="true"] {
  color: var(--paper);
  border-left-color: var(--red);
  background: linear-gradient(90deg, rgba(213, 31, 43, .22), var(--night) 72%);
}

.page-contact .contact-panel {
  position: relative;
  background: var(--night);
  border: var(--pc-edge);
  padding: clamp(1.1rem, 3.4vw, 2rem);
}

.page-contact .contact-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--red), var(--cyan) 46%, transparent 88%);
}

.page-contact .contact-panel[hidden] {
  display: none;
}

.page-contact .contact-panel__title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4.2vw, 2rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: .01em;
  color: var(--paper);
  margin: 0 0 .65rem;
}

.page-contact .contact-panel__text {
  margin: 0 0 1.15rem;
  color: var(--mist);
  font-size: .96rem;
  line-height: 1.85;
}

.page-contact .contact-panel__label {
  margin: 0 0 .7rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .contact-panel__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(24, 224, 208, .4);
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-contact .contact-panel__link:hover,
.page-contact .contact-panel__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-contact .material-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-contact .material-list li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--paper);
  font-size: .93rem;
  line-height: 1.7;
}

.page-contact .material-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  background: var(--lime);
}

.page-contact .contact-panel__hint {
  margin: 1.15rem 0 0;
  padding: .7rem .9rem;
  border-left: 2px solid var(--amber);
  background: rgba(255, 176, 32, .07);
  color: var(--paper);
  font-size: .86rem;
  line-height: 1.7;
}

/* ---------- 客服渠道 ---------- */
.page-contact .channels__grid {
  display: grid;
  gap: clamp(1.5rem, 4.5vw, 3rem);
  align-items: start;
}

.page-contact .channels__media {
  margin: 0;
  border: var(--pc-edge);
  overflow: hidden;
  position: relative;
}

.page-contact .channels__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.82) contrast(1.06) brightness(.92);
}

.page-contact .channels__media .media__cap {
  display: block;
  padding: .6rem .85rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--mist);
  border-top: var(--pc-edge);
  background: var(--night);
}

.page-contact .channels__body .section__head {
  margin-bottom: clamp(1rem, 2.5vw, 1.5rem);
}

.page-contact .channel-item {
  border-top: var(--pc-edge);
  padding-block: clamp(.9rem, 2.5vw, 1.15rem);
}

.page-contact .channel-item__icon {
  display: block;
  color: var(--red);
  margin-bottom: .55rem;
}

.page-contact .channel-item__title {
  margin: 0 0 .4rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: .01em;
}

.page-contact .channel-item__text {
  margin: 0;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.8;
}

/* ---------- 联系地址 ---------- */
.page-contact .contact-address {
  background: var(--night);
  border-block: var(--pc-edge);
}

.page-contact .address__grid {
  display: grid;
  gap: clamp(1.5rem, 4.5vw, 2.75rem);
  align-items: center;
}

.page-contact .address__text {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.8vw, 2.6rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: .01em;
  color: var(--paper);
  margin: .7rem 0 .9rem;
}

.page-contact .address__note {
  margin: 0;
  max-width: 40ch;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.8;
}

.page-contact .address__stamp {
  display: inline-block;
  margin: 1.15rem 0 0;
  padding: .42rem .75rem;
  border: 1px solid var(--red);
  color: var(--red);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  transform: rotate(-1.6deg);
}

.page-contact .address__media {
  margin: 0;
  border: var(--pc-edge);
  position: relative;
  overflow: hidden;
}

.page-contact .address__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(.75) contrast(1.08) brightness(.85);
}

.page-contact .address__media .media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: .45rem .7rem;
  background: rgba(11, 11, 13, .82);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .1em;
}

/* ---------- 协作与反馈 ---------- */
.page-contact .feedback__grid {
  display: grid;
  gap: .75rem;
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-contact .fold {
  border: var(--pc-edge);
  background: var(--night);
}

.page-contact .fold > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: .75rem;
  padding: 1rem 1.15rem;
  color: var(--paper);
  font-size: .96rem;
  font-weight: 600;
  line-height: 1.6;
  transition: color .18s var(--ease), background .18s var(--ease);
}

.page-contact .fold > summary::-webkit-details-marker {
  display: none;
}

.page-contact .fold > summary::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--red);
}

.page-contact .fold > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--cyan);
}

.page-contact .fold[open] > summary::after {
  content: "−";
}

.page-contact .fold > summary:hover {
  background: rgba(213, 31, 43, .09);
}

.page-contact .fold__body {
  padding: .9rem 1.15rem 1.15rem 1.15rem;
  border-top: var(--pc-soft);
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.85;
}

.page-contact .fold__body p {
  margin: 0 0 .7rem;
}

.page-contact .fold__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 回复节奏 ---------- */
.page-contact .rhythm {
  display: grid;
  gap: clamp(1.25rem, 3.5vw, 2.25rem);
  align-items: center;
}

.page-contact .rhythm__bar {
  display: flex;
  align-items: center;
  gap: .9rem;
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 4.4vw, 1.7rem);
  letter-spacing: .04em;
  color: var(--paper);
}

.page-contact .rhythm__track {
  flex: 1 1 auto;
  min-width: 2rem;
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--cyan) 58%, var(--lime));
}

.page-contact .rhythm__caption {
  margin: .6rem 0 0;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--lime);
}

.page-contact .rhythm__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.6vw, 2.4rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--paper);
  margin: 0 0 .8rem;
}

.page-contact .rhythm__text {
  margin: 0 0 .85rem;
  color: var(--mist);
  font-size: .94rem;
  line-height: 1.85;
  max-width: 56ch;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .feedback__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .fold:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-tabs {
    grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .channels__grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  }

  .page-contact .address__grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  }

  .page-contact .rhythm {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  }
}

@media (min-width: 920px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }
}

@media (min-width: 1020px) {
  .page-contact .feedback__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .fold:first-child {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-tabs .tabs__btn,
  .page-contact .contact-line .copy-btn,
  .page-contact .contact-panel__link,
  .page-contact .fold > summary,
  .page-contact .contact-line__val {
    transition: none;
  }

  .page-contact .contact-tabs .tabs__btn:hover {
    transform: none;
  }
}
<<<END>>>