.page-contact {
  --pc-pad: clamp(20px, 3vw, 30px);
  --pc-band: clamp(46px, 7vw, 92px);
  --pc-wash: #F2F5FA;
  --pc-ink-soft: rgba(233, 239, 247, .78);
  --pc-ink-dim: rgba(233, 239, 247, .56);
  --pc-cut: 14px;
  padding-bottom: clamp(56px, 9vw, 110px);
}

.page-contact .eyebrow {
  color: var(--ink-500);
}

.page-contact .copy-btn {
  flex: none;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  align-items: center;
  margin-block: clamp(20px, 3.4vw, 36px) var(--pc-band);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-size: clamp(2rem, 5.4vw, 3.25rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: clamp(1rem, 1.5vw, 1.06rem);
  line-height: 1.85;
  color: var(--pc-ink-soft);
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-contact .contact-hero__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 2px solid var(--ink-700);
  border-radius: var(--pc-cut);
  background: var(--ink-850);
}

.page-contact .contact-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, transparent 50%, rgba(227, 163, 59, .18));
  pointer-events: none;
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 通用小节标题 ---------- */
.page-contact .section-head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-contact .section-head h2,
.page-contact .contact-prep h2,
.page-contact .contact-subject h2,
.page-contact .contact-pace h2,
.page-contact .contact-signoff h2 {
  margin: 10px 0 0;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--paper);
}

/* ---------- 渠道与准备清单 ---------- */
.page-contact .contact-channels {
  display: grid;
  gap: clamp(30px, 4vw, 46px);
  margin-bottom: var(--pc-band);
}

.page-contact .channel-stack {
  display: grid;
  gap: 16px;
}

.page-contact .channel-card {
  position: relative;
  padding: var(--pc-pad);
  border: 2px solid var(--ink-700);
  border-radius: var(--pc-cut);
  background: var(--ink-800);
}

.page-contact .channel-card--mail {
  border-color: var(--amber-deep);
  background: linear-gradient(152deg, var(--ink-800), var(--ink-850) 68%, rgba(227, 163, 59, .12));
}

.page-contact .channel-card--phone {
  background: linear-gradient(152deg, var(--ink-850), var(--ink-800));
}

.page-contact .channel-card--post {
  background: var(--ink-850);
  border-color: var(--line-strong);
}

.page-contact .channel-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
}

.page-contact .channel-card__no {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-contact .channel-card__head h3 {
  margin: 0;
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .channel-card__desc {
  margin: 12px 0 0;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--pc-ink-soft);
}

.page-contact .channel-card__value {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-contact .channel-card__addr {
  font-size: clamp(.9rem, 1.9vw, 1.02rem);
  font-weight: 500;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .channel-card--mail .channel-card__addr {
  color: var(--amber-soft);
}

.page-contact .channel-card__addr-text {
  font-size: .98rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .channel-card__foot {
  margin: 12px 0 0;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--pc-ink-dim);
}

.page-contact .contact-prep {
  padding: var(--pc-pad);
  border: 2px solid var(--line-strong);
  border-radius: var(--pc-cut);
  background: var(--ink-850);
}

.page-contact .contact-prep__lede {
  margin: 10px 0 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--pc-ink-dim);
}

.page-contact .prep-list {
  margin-top: 18px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}

.page-contact .prep-item:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .prep-item__box {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .prep-item__mark {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 2px solid var(--celadon-deep);
  border-radius: 5px;
  background: transparent;
  transition: background .18s ease, border-color .18s ease;
}

.page-contact .prep-item__box:checked + .prep-item__mark {
  background: var(--celadon);
  border-color: var(--celadon);
}

.page-contact .prep-item__box:checked + .prep-item__mark::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 11px;
  border: solid var(--ink-900);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .prep-item__box:focus-visible + .prep-item__mark {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-contact .prep-item__body {
  display: block;
}

.page-contact .prep-item__title {
  display: block;
  font-size: .96rem;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .prep-item__desc {
  display: block;
  margin-top: 4px;
  font-size: .85rem;
  line-height: 1.7;
  color: var(--pc-ink-dim);
}

.page-contact .contact-prep__hint {
  margin: 16px 0 0;
  font-size: .8rem;
  line-height: 1.6;
  color: var(--celadon-lift);
}

/* ---------- 主题写法 ---------- */
.page-contact .contact-subject {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: var(--pc-pad);
  border: 2px solid var(--ink-700);
  border-radius: var(--pc-cut);
  background:
    linear-gradient(120deg, rgba(29, 53, 87, .55), rgba(18, 36, 67, .9)),
    var(--ink-850);
  margin-bottom: var(--pc-band);
}

.page-contact .contact-subject__head p {
  margin: 12px 0 0;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--pc-ink-soft);
}

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

.page-contact .subject-samples li {
  padding: 12px 14px;
  border-left: 3px solid var(--amber-deep);
  border-radius: 0 8px 8px 0;
  background: rgba(11, 23, 48, .55);
}

.page-contact .subject-samples code {
  display: block;
  font-family: var(--font-mono);
  font-size: .82rem;
  line-height: 1.7;
  letter-spacing: .01em;
  color: var(--paper);
  word-break: break-word;
}

/* ---------- 问题分流（浅色区） ---------- */
.page-contact .contact-routing {
  background: linear-gradient(180deg, #EDF1F7 0%, var(--pc-wash) 100%);
  color: var(--ink-900);
  padding-block: var(--pc-band);
  margin-block: var(--pc-band);
}

.page-contact .contact-routing__head h2 {
  margin: 10px 0 0;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--ink-900);
}

.page-contact .contact-routing .eyebrow {
  color: var(--ink-700);
}

.page-contact .contact-routing__lede {
  margin: 12px 0 0;
  max-width: 46em;
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(29, 53, 87, .82);
}

.page-contact .route-list {
  display: grid;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .route-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 18px 18px;
  border: 1px solid rgba(29, 53, 87, .18);
  border-radius: var(--pc-cut);
  background: rgba(255, 255, 255, .62);
  text-decoration: none;
  color: inherit;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}

.page-contact .route-row__idx {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--amber-deep);
}

.page-contact .route-row__body {
  display: block;
  min-width: 0;
}

.page-contact .route-row__title {
  display: block;
  font-size: clamp(.96rem, 1.7vw, 1.04rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-900);
}

.page-contact .route-row__desc {
  display: block;
  margin-top: 5px;
  font-size: .86rem;
  line-height: 1.7;
  color: rgba(29, 53, 87, .74);
  transition: color .2s ease;
}

.page-contact .route-row__arrow {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--ink-700);
  opacity: .4;
  transition: opacity .2s ease, transform .2s ease;
}

.page-contact .route-row:hover,
.page-contact .route-row:focus-visible {
  background: #fff;
  border-color: var(--amber);
  transform: translateX(4px);
}

.page-contact .route-row:hover .route-row__arrow,
.page-contact .route-row:focus-visible .route-row__arrow {
  opacity: 1;
  transform: translateX(4px);
}

.page-contact .route-row:hover .route-row__desc,
.page-contact .route-row:focus-visible .route-row__desc {
  color: rgba(29, 53, 87, .95);
}

/* ---------- 处理节奏 ---------- */
.page-contact .contact-pace {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
  margin-bottom: var(--pc-band);
}

.page-contact .contact-pace__lede {
  margin: 14px 0 0;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--pc-ink-soft);
}

.page-contact .pace-steps {
  display: grid;
  gap: 14px;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .pace-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0 16px 16px;
  border-left: 2px solid var(--line-strong);
}

.page-contact .pace-step__no {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--celadon-lift);
  padding-top: 2px;
}

.page-contact .pace-step__body strong {
  display: block;
  font-size: .98rem;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .pace-step__body span {
  display: block;
  margin-top: 5px;
  font-size: .87rem;
  line-height: 1.75;
  color: var(--pc-ink-dim);
}

.page-contact .contact-pace__figure {
  margin: 0;
  overflow: hidden;
  border: 2px solid var(--ink-700);
  border-radius: var(--pc-cut);
  background: var(--ink-850);
}

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

.page-contact .contact-pace__caption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: .82rem;
  line-height: 1.65;
  color: var(--pc-ink-dim);
}

/* ---------- 收束 ---------- */
.page-contact .contact-signoff {
  padding-top: clamp(26px, 4vw, 40px);
  border-top: 2px solid var(--line-strong);
}

.page-contact .signoff-list {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-contact .signoff-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px 18px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .signoff-row__k {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-contact .signoff-row__v {
  font-size: clamp(1.05rem, 3.4vw, 2.05rem);
  font-weight: 500;
  line-height: 1.3;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .contact-signoff__note {
  margin: 20px 0 0;
  font-size: .85rem;
  line-height: 1.75;
  color: var(--pc-ink-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-subject {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-contact .route-row {
    padding: 20px 26px;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-channels {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: start;
  }

  .page-contact .channel-card--phone {
    margin-left: 7%;
  }

  .page-contact .channel-card--post {
    margin-left: 14%;
  }

  .page-contact .contact-pace {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: clamp(32px, 4vw, 56px);
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-prep {
    position: sticky;
    top: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .route-row,
  .page-contact .route-row__arrow,
  .page-contact .route-row__desc,
  .page-contact .prep-item__mark {
    transition: none;
  }

  .page-contact .route-row:hover,
  .page-contact .route-row:focus-visible,
  .page-contact .route-row:hover .route-row__arrow,
  .page-contact .route-row:focus-visible .route-row__arrow {
    transform: none;
  }
}
<<<END>>>