.page-contact {
  --pc-gap: clamp(16px, 2.4vw, 28px);
  --pc-pad: clamp(20px, 2.6vw, 32px);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(40px, 5.5vw, 72px);
}

.page-contact .contact-hero__lede {
  margin-top: 20px;
  max-width: 62ch;
  color: var(--mist-lift);
}

/* ---------- 视觉主图 ---------- */
.page-contact .contact-visual {
  position: relative;
  margin: 0 0 clamp(30px, 4.4vw, 56px);
  border: 1px solid var(--edge);
  overflow: hidden;
  background: var(--ink);
}

.page-contact .contact-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  opacity: .86;
}

.page-contact .contact-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(52, 231, 228, .10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(52, 231, 228, .10) 1px, transparent 1px);
  background-size: 44px 44px;
  mix-blend-mode: screen;
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channel-deck {
  display: grid;
  gap: var(--pc-gap);
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: var(--pc-pad);
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 2px solid var(--edge);
  transition: border-top-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .channel-card--wide {
  border-top-color: var(--cyan);
  background:
    linear-gradient(158deg, rgba(52, 231, 228, .10), rgba(20, 22, 28, .92) 46%),
    var(--surface);
}

.page-contact .channel-card--mid {
  border-top-color: var(--amber);
}

.page-contact .channel-card--slim {
  border-top-color: var(--rose);
}

.page-contact .channel-card__title {
  font-family: var(--font-head);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 900;
  line-height: 1.35;
  color: var(--paper);
  margin: 0;
}

.page-contact .channel-card__phone {
  display: inline-block;
  align-self: flex-start;
  font-size: clamp(27px, 4.2vw, 44px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: .01em;
  color: var(--paper);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--cyan);
}

.page-contact .channel-card__mail {
  display: inline-block;
  align-self: flex-start;
  font-size: clamp(13px, 1.4vw, 15px);
  line-height: 1.5;
  color: var(--cyan);
  word-break: break-all;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(28, 92, 107, .9);
}

.page-contact .channel-card--slim .channel-card__mail {
  color: var(--amber);
  border-bottom-color: rgba(255, 196, 138, .4);
}

.page-contact .channel-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-lift);
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 9px;
  height: 1px;
  background: var(--orange);
}

.page-contact .channel-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-lift);
}

/* ---------- 反馈流程 ---------- */
.page-contact .contact-flow {
  background: linear-gradient(180deg, rgba(20, 22, 28, .94), rgba(10, 18, 48, .62));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .flow-step {
  position: relative;
  padding: var(--pc-pad);
  background: rgba(5, 7, 13, .58);
  border: 1px solid var(--line);
}

.page-contact .flow-step__num {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--orange);
  padding-bottom: 3px;
  border-bottom: 1px solid var(--orange);
  margin-bottom: 14px;
}

.page-contact .flow-step__title {
  font-family: var(--font-head);
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 900;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-contact .flow-step__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist-lift);
}

.page-contact .contact-flow .note-plate {
  margin-top: clamp(24px, 3vw, 38px);
}

.page-contact .flow-band {
  margin: clamp(30px, 4vw, 52px) 0 0;
  border: 1px solid var(--edge);
  overflow: hidden;
}

.page-contact .flow-band img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-contact .contact-flow__aside {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 15px;
  color: var(--mist-lift);
}

.page-contact .contact-flow__aside a,
.page-contact .partner-panel__aside a,
.page-contact .address-block__aside a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 231, 228, .45);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .contact-flow__aside a:hover,
.page-contact .partner-panel__aside a:hover,
.page-contact .address-block__aside a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 版本归档 ---------- */
.page-contact .archive-grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .archive-grid__text p {
  margin: 0 0 16px;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist-lift);
}

.page-contact .archive-grid__text .section-title {
  margin-bottom: 20px;
}

.page-contact .archive-grid__cta {
  margin-top: 24px;
  margin-bottom: 0;
}

.page-contact .archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .archive-item {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .archive-item__key {
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-contact .archive-item__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-lift);
}

/* ---------- 合作沟通 ---------- */
.page-contact .partner-panel {
  padding: clamp(24px, 3.2vw, 44px);
  border: 1px solid var(--edge);
  border-left: 3px solid var(--orange);
  background: linear-gradient(118deg, rgba(255, 138, 61, .08), rgba(20, 22, 28, .92) 42%);
}

.page-contact .partner-panel__lede {
  margin: 0 0 clamp(24px, 3vw, 36px);
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist-lift);
}

.page-contact .partner-panel__lede .mono {
  color: var(--paper);
}

.page-contact .partner-cols {
  display: grid;
  gap: clamp(22px, 3vw, 44px);
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .partner-col__title {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: .04em;
  color: var(--paper);
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-contact .partner-col__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .partner-col__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-lift);
}

.page-contact .partner-col__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 9px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .partner-panel__aside {
  margin: clamp(24px, 3vw, 34px) 0 0;
  font-size: 15px;
  color: var(--mist-lift);
}

/* ---------- 通信地址 ---------- */
.page-contact .address-block {
  display: grid;
  gap: clamp(22px, 3vw, 44px);
  grid-template-columns: minmax(0, 1fr);
  padding: clamp(22px, 3vw, 40px);
  background: var(--surface);
  border: 1px solid var(--line);
}

.page-contact .address-map {
  position: relative;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--edge);
  overflow: hidden;
  background-color: #070d22;
  background-image:
    linear-gradient(rgba(52, 231, 228, .13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(52, 231, 228, .13) 1px, transparent 1px);
  background-size: 28px 28px;
}

.page-contact .address-map::before {
  content: "";
  position: absolute;
  inset: -25%;
  background: linear-gradient(114deg, transparent 44%, rgba(255, 138, 61, .55) 45%, rgba(255, 138, 61, .55) 46%, transparent 47%);
}

.page-contact .address-map::after {
  content: "";
  position: absolute;
  left: 53%;
  top: 52%;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 8px rgba(52, 231, 228, .14), 0 0 22px rgba(52, 231, 228, .7);
}

.page-contact .address-block__line {
  margin: 14px 0 22px;
  font-size: clamp(17px, 1.9vw, 21px);
  line-height: 1.6;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .address-notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .address-notes li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist-lift);
}

.page-contact .address-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 10px;
  height: 1px;
  background: var(--amber);
}

.page-contact .address-block__aside {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  font-size: 15px;
  color: var(--mist-lift);
}

/* ---------- 悬停微交互 ---------- */
@media (hover: hover) {
  .page-contact .channel-card:hover {
    border-top-color: var(--cyan);
    transform: translateY(-2px);
  }

  .page-contact .flow-step:hover .flow-step__num {
    color: var(--amber);
    border-bottom-color: var(--amber);
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-contact .flow-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .flow-step:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -12px;
    top: 50%;
    width: 10px;
    height: 1px;
    background: var(--orange);
    transform: translateY(-50%);
  }

  .page-contact .flow-step:not(:last-child)::before {
    content: "";
    position: absolute;
    right: -12px;
    top: 50%;
    width: 6px;
    height: 6px;
    border-top: 1px solid var(--orange);
    border-right: 1px solid var(--orange);
    transform: translate(3px, -50%) rotate(45deg);
  }

  .page-contact .partner-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-contact .channel-deck {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.02fr) minmax(0, .84fr);
    align-items: start;
  }

  .page-contact .channel-card--wide {
    padding-right: clamp(28px, 3.4vw, 44px);
  }

  .page-contact .archive-grid {
    grid-template-columns: minmax(0, 1.14fr) minmax(0, .86fr);
    align-items: start;
  }

  .page-contact .address-block {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-hero__lede {
    margin-top: 24px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .channel-card__phone,
  .page-contact .flow-step__num {
    transition: none;
  }

  .page-contact .channel-card:hover {
    transform: none;
  }
}
<<<END>>>