.page-contact {
  --contact-gap: clamp(12px, 1.6vw, 20px);
  --contact-pad: clamp(18px, 2.6vw, 32px);
  padding-top: var(--header-h);
  background:
    radial-gradient(130% 70% at 100% 0%, rgba(0, 229, 255, .10), transparent 62%),
    radial-gradient(90% 60% at 0% 30%, rgba(255, 106, 0, .07), transparent 60%),
    var(--ink);
  color: var(--text);
  font-family: var(--sans);
  overflow-x: hidden;
}

.page-contact .section {
  padding: clamp(40px, 6vw, 88px) 0;
}

.page-contact h2 {
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  line-height: 1.16;
  letter-spacing: -.015em;
  margin: 10px 0 0;
}

.page-contact .lead {
  margin-top: 14px;
  max-width: 62ch;
  color: var(--text-soft);
  font-size: clamp(.94rem, 1.35vw, 1.02rem);
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(20px, 3vw, 34px) 0 clamp(34px, 5vw, 68px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(42, 53, 71, .55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 53, 71, .55) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .45;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(120% 90% at 80% 10%, #000 0%, transparent 78%);
  mask-image: radial-gradient(120% 90% at 80% 10%, #000 0%, transparent 78%);
}

.page-contact .contact-hero__intro {
  position: relative;
  display: grid;
  gap: clamp(18px, 2.4vw, 30px);
  padding-top: clamp(22px, 3.6vw, 44px);
}

.page-contact .contact-hero__rail {
  display: none;
}

.page-contact .contact-title {
  margin: 14px 0 0;
  font-size: clamp(2.05rem, 7vw, 4rem);
  line-height: 1.04;
  letter-spacing: -.025em;
  font-weight: 800;
  color: var(--text);
}

.page-contact .contact-title span {
  display: block;
}

.page-contact .contact-title__accent {
  color: transparent;
  -webkit-text-stroke: 1px var(--cyan);
  text-stroke: 1px var(--cyan);
  letter-spacing: .01em;
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 52ch;
  color: var(--text-soft);
  font-size: clamp(.95rem, 1.4vw, 1.05rem);
  line-height: 1.78;
}

.page-contact .contact-hero__status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 20px 0 0;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  color: var(--cyan);
  font-size: 11.5px;
  letter-spacing: .12em;
}

.page-contact .contact-hero__status::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--gain);
  box-shadow: 0 0 10px var(--gain);
}

/* ---------- 联系卡拼贴 ---------- */
.page-contact .contact-cards {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(26px, 3.6vw, 46px);
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "mail"
    "phone"
    "addr";
}

.page-contact .contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: var(--contact-pad);
  background: var(--panel);
  border: 1px solid var(--line);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-contact .contact-card:hover {
  border-color: var(--orange);
}

.page-contact .contact-card__label {
  display: block;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
  margin-bottom: 14px;
}

.page-contact .contact-card__desc {
  margin: 16px 0 0;
  color: var(--text-soft);
  font-size: .9rem;
  line-height: 1.7;
  max-width: 44ch;
}

.page-contact .contact-card__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: auto;
}

.page-contact .contact-card--mail {
  grid-area: mail;
  justify-content: space-between;
  gap: clamp(20px, 3vw, 40px);
  border-color: rgba(0, 229, 255, .3);
  background: linear-gradient(158deg, #0B111C 0%, #071019 58%, #05070C 100%);
}

.page-contact .contact-card--mail::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-contact .contact-mail {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.02rem, 3.6vw, 1.9rem);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--text);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

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

.page-contact .contact-card--phone {
  grid-area: phone;
}

.page-contact .contact-phone {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.5rem, 4.4vw, 2rem);
  line-height: 1.2;
  letter-spacing: .02em;
  color: var(--orange);
}

.page-contact .contact-card--addr {
  grid-area: addr;
  min-height: 210px;
  background: var(--panel-2);
}

.page-contact .addr-map {
  position: absolute;
  inset: 0;
  opacity: .32;
}

.page-contact .addr-map img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-contact .contact-card--addr::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 229, 255, .09) 0 1px,
    transparent 1px 5px
  );
  pointer-events: none;
}

.page-contact .contact-card--addr > *:not(.addr-map) {
  position: relative;
  z-index: 1;
}

.page-contact .contact-addr {
  margin: 0;
  font-size: clamp(1rem, 1.9vw, 1.15rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
  max-width: 34ch;
}

/* ---------- 复制按钮 ---------- */
.page-contact .copy-btn {
  appearance: none;
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: .1em;
  padding: 9px 16px;
  color: var(--cyan);
  background: transparent;
  border: 1px solid var(--cyan-dim);
  cursor: pointer;
  transition: background-color .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-contact .copy-state {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gain);
}

/* ---------- 咨询准备 ---------- */
.page-contact .intake-list {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .intake-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 28px);
  padding: clamp(20px, 2.8vw, 32px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .intake-num {
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  line-height: 1.2;
  color: var(--cyan-dim);
  letter-spacing: .04em;
}

.page-contact .intake-item:nth-child(2) .intake-num {
  color: var(--orange);
}

.page-contact .intake-item:nth-child(3) .intake-num {
  color: var(--magenta);
}

.page-contact .intake-title {
  margin: 0 0 8px;
  font-size: clamp(1.02rem, 1.9vw, 1.2rem);
  letter-spacing: -.01em;
}

.page-contact .intake-desc {
  margin: 0;
  color: var(--text-soft);
  font-size: .93rem;
  line-height: 1.72;
  max-width: 56ch;
}

.page-contact .intake-need {
  margin: 12px 0 0;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
}

/* ---------- 回复时段 ---------- */
.page-contact .reply-block {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  padding: clamp(22px, 3.4vw, 44px);
  background: linear-gradient(135deg, #0B111C 0%, #111A2B 72%, #0B111C 100%);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-contact .reply-clock {
  margin: 12px 0 0;
  font-size: clamp(1.7rem, 5vw, 2.7rem);
  line-height: 1.05;
  letter-spacing: .02em;
  color: var(--text);
}

.page-contact .reply-clock em {
  color: var(--cyan);
  font-style: normal;
}

.page-contact .reply-sub {
  margin: 10px 0 0;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--muted);
}

.page-contact .reply-heading {
  margin: 0 0 14px;
}

.page-contact .reply-copy {
  margin: 0;
  color: var(--text-soft);
  font-size: .95rem;
  line-height: 1.78;
  max-width: 58ch;
}

/* ---------- 内容合作 ---------- */
.page-contact .collab-layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .collab-media {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-contact .collab-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  filter: saturate(.9) contrast(1.05);
}

.page-contact .collab-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(5, 7, 12, .85) 100%);
  pointer-events: none;
}

.page-contact .collab-media figcaption {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 1;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .collab-grid {
  display: grid;
  gap: clamp(18px, 2.6vw, 30px);
  margin-top: clamp(22px, 3.2vw, 34px);
}

.page-contact .collab-item {
  padding-left: 16px;
  border-left: 1px solid var(--line);
  transition: border-color .18s var(--ease);
}

.page-contact .collab-item:hover {
  border-left-color: var(--orange);
}

.page-contact .collab-item h3 {
  margin: 12px 0 8px;
  font-size: clamp(1rem, 1.8vw, 1.14rem);
  letter-spacing: -.01em;
}

.page-contact .collab-item p {
  margin: 0;
  color: var(--text-soft);
  font-size: .9rem;
  line-height: 1.72;
}

/* ---------- 折叠问答 ---------- */
.page-contact .detail-list {
  margin-top: clamp(24px, 3.4vw, 38px);
  border-top: 1px solid var(--line);
}

.page-contact .detail-item {
  border-bottom: 1px solid var(--line);
}

.page-contact .detail-item summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(.98rem, 1.6vw, 1.1rem);
  font-weight: 600;
  color: var(--text);
  transition: color .16s var(--ease);
}

.page-contact .detail-item summary::-webkit-details-marker {
  display: none;
}

.page-contact .detail-item summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--cyan);
  flex: none;
}

.page-contact .detail-item[open] summary::after {
  content: "–";
  color: var(--orange);
}

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

.page-contact .detail-body {
  padding: 0 0 20px;
  color: var(--text-soft);
  font-size: .92rem;
  line-height: 1.78;
  max-width: 72ch;
}

/* ---------- 结尾入口 ---------- */
.page-contact .closing-links {
  list-style: none;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .closing-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  text-decoration: none;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  font-size: .95rem;
  transition: border-color .16s var(--ease), color .16s var(--ease), background-color .16s var(--ease);
}

.page-contact .closing-links a::after {
  content: "→";
  font-family: var(--mono);
  color: var(--cyan);
  transition: transform .16s var(--ease);
}

.page-contact .closing-links a:hover,
.page-contact .closing-links a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--panel-2);
}

.page-contact .closing-links a:hover::after {
  transform: translateX(4px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .intake-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(28px, 4vw, 56px);
  }

  .page-contact .collab-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-contact .closing-links {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__intro {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: end;
  }

  .page-contact .contact-cards {
    grid-template-columns: 7fr 5fr;
    grid-template-areas:
      "mail phone"
      "mail addr";
  }

  .page-contact .contact-card--mail {
    padding: clamp(24px, 2.8vw, 36px);
  }

  .page-contact .reply-block {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-contact .collab-layout {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    align-items: start;
  }

  .page-contact .collab-media {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero__intro {
    position: relative;
    padding-left: 0;
  }

  .page-contact .contact-hero__rail {
    display: block;
    position: absolute;
    left: -30px;
    top: 52px;
    writing-mode: vertical-rl;
    font-size: 11px;
    letter-spacing: .28em;
    color: var(--muted);
    text-transform: uppercase;
  }

  .page-contact .contact-mail {
    word-break: normal;
  }
}

补充说明：上一条 `` 标记已与 CSS 正文一同输出，此处重复标记仅为提示，请以上一段 CSS 内容为准。