.page-contact {
  --contact-rail: 320px;
  --contact-block-gap: clamp(48px, 7vw, 84px);
  --contact-inner-gap: clamp(32px, 5vw, 56px);
  --contact-hair: 1px solid var(--color-line);
}

/* ---------- 面包屑与首屏 ---------- */
.page-contact .breadcrumb {
  margin: clamp(18px, 3vw, 30px) 0 0;
  font-size: 13px;
}

.page-contact .breadcrumb__sep {
  margin: 0 8px;
  color: var(--color-muted);
  opacity: .7;
}

.page-contact .contact-intro {
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(24px, 3.5vw, 40px);
}

.page-contact .contact-intro h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.page-contact .contact-intro .lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-muted);
}

.page-contact .contact-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--color-muted);
}

.page-contact .contact-facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding-left: 12px;
  border-left: 2px solid var(--color-line);
}

.page-contact .contact-facts .mono {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--color-cyan);
}

/* ---------- 首屏图 ---------- */
.page-contact .contact-hero-media {
  margin: clamp(22px, 3.5vw, 40px) 0 0;
}

.page-contact .media-frame__img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 两栏对峙布局 ---------- */
.page-contact .contact-arrange {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "ch"
    "wn"
    "cl";
  gap: var(--contact-inner-gap) 0;
  margin-top: var(--contact-block-gap);
  padding-top: var(--contact-inner-gap);
  border-top: var(--contact-hair);
}

.page-contact .arr-channels { grid-area: ch; }
.page-contact .arr-warn { grid-area: wn; }
.page-contact .arr-info { grid-area: cl; }

.page-contact .contact-arrange .section-title {
  margin: 0 0 18px;
  font-size: clamp(19px, 2.3vw, 24px);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--color-text);
}

/* ---------- 渠道卡 ---------- */
.page-contact .channel-card {
  position: relative;
  padding: 20px 20px 22px;
  background: var(--color-panel);
  border: var(--contact-hair);
  border-radius: 2px;
}

.page-contact .channel-card + .channel-card {
  margin-top: 12px;
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  bottom: -1px;
  width: 2px;
  background: var(--color-line);
}

.page-contact .channel-card--mail::before { background: var(--color-cyan); }
.page-contact .channel-card--tel::before { background: var(--color-amber); }

.page-contact .channel-card__label {
  margin: 0;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--color-muted);
}

.page-contact .channel-card__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 18px);
  line-height: 1.55;
  color: var(--color-text);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-card--addr .channel-card__value {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-contact .channel-card__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
}

/* ---------- 警示清单 ---------- */
.page-contact .contact-warn {
  position: relative;
  padding: clamp(22px, 3vw, 30px) clamp(18px, 3vw, 32px);
  background: linear-gradient(180deg, rgba(255, 84, 112, .07) 0%, rgba(255, 84, 112, 0) 70%);
  border-top: var(--contact-hair);
  border-right: var(--contact-hair);
  border-bottom: var(--contact-hair);
  border-left: 2px solid var(--color-danger);
  border-radius: 2px;
}

.page-contact .contact-warn .section-title {
  color: var(--color-danger);
}

.page-contact .contact-warn__lead {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text);
}

.page-contact .warn-list {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .warn-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
}

.page-contact .warn-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 7px;
  height: 7px;
  background: var(--color-danger);
  transform: rotate(45deg);
}

.page-contact .contact-warn__foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--color-line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--color-muted);
}

/* ---------- 信息自查清单 ---------- */
.page-contact .contact-checklist__lead {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-muted);
}

.page-contact .check-list {
  display: grid;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--contact-hair);
}

.page-contact .check-item {
  display: flex;
  gap: 14px;
  padding: 16px 4px;
  border-bottom: var(--contact-hair);
  transition: background-color .2s ease;
}

.page-contact .check-item:hover {
  background: rgba(23, 225, 214, .04);
}

.page-contact .check-item__box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  background: var(--color-void);
  border: 1px solid var(--color-line);
  border-radius: 2px;
  cursor: pointer;
}

.page-contact .check-item__box:checked {
  border-color: var(--color-cyan);
  background: rgba(23, 225, 214, .12);
}

.page-contact .check-item__box:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--color-cyan);
  border-bottom: 2px solid var(--color-cyan);
  transform: rotate(45deg);
}

.page-contact .check-item__box:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}

.page-contact .check-item__label {
  display: block;
  cursor: pointer;
}

.page-contact .check-item__title {
  display: block;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--color-text);
}

.page-contact .check-item__desc {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
}

/* ---------- 时间口径 ---------- */
.page-contact .contact-sla {
  margin-top: var(--contact-block-gap);
  padding-top: var(--contact-inner-gap);
  border-top: var(--contact-hair);
}

.page-contact .contact-sla .section-title {
  margin: 0;
  font-size: clamp(19px, 2.3vw, 24px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.page-contact .sla-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 24px;
  background: var(--color-line);
  border: var(--contact-hair);
}

.page-contact .sla-item {
  padding: 20px clamp(16px, 2.4vw, 24px) 22px;
  background: var(--color-panel);
}

.page-contact .sla-item__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.4vw, 25px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-cyan);
  overflow-wrap: anywhere;
}

.page-contact .sla-item__label {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--color-muted);
}

.page-contact .sla-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--color-muted);
}

/* ---------- 文档优先 ---------- */
.page-contact .contact-docs {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  margin-top: var(--contact-block-gap);
  padding-top: var(--contact-inner-gap);
  border-top: var(--contact-hair);
}

.page-contact .contact-docs .section-title {
  margin: 0;
  font-size: clamp(19px, 2.3vw, 24px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.page-contact .contact-docs__p {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
}

.page-contact .contact-docs__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-contact .contact-docs__media {
  margin: 0;
}

/* ---------- 受理范围 ---------- */
.page-contact .contact-compliance {
  margin-top: var(--contact-block-gap);
  padding: clamp(24px, 3.6vw, 38px);
  background: var(--color-panel);
  border: var(--contact-hair);
  border-left: 2px solid var(--color-cyan);
  border-radius: 2px;
}

.page-contact .contact-compliance .section-title {
  margin: 0 0 16px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.page-contact .contact-compliance p {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-muted);
}

.page-contact .contact-compliance a {
  color: var(--color-cyan);
  text-underline-offset: 3px;
}

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

/* ---------- 横向引导带 ---------- */
.page-contact .contact-drag {
  margin-top: var(--contact-block-gap);
  padding-top: var(--contact-inner-gap);
  border-top: var(--contact-hair);
}

.page-contact .contact-drag .section-title {
  margin: 0;
  font-size: clamp(19px, 2.3vw, 24px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.page-contact .doc-drag {
  margin-top: 22px;
  padding-bottom: 14px;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 5%, #000 86%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 5%, #000 86%, transparent 100%);
}

.page-contact .doc-drag:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 4px;
}

.page-contact .doc-drag__track {
  display: flex;
  gap: 12px;
  width: max-content;
  min-width: 100%;
  margin: 0;
  padding: 0 2px;
  list-style: none;
}

.page-contact .doc-drag__item {
  scroll-snap-align: start;
}

.page-contact .doc-chip {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  width: 190px;
  min-height: 104px;
  padding: 16px 18px;
  background: var(--color-panel);
  border: var(--contact-hair);
  border-radius: 2px;
  color: var(--color-text);
  text-decoration: none;
  transition: border-color .2s ease, background-color .2s ease;
}

.page-contact .doc-chip:hover,
.page-contact .doc-chip:focus-visible {
  border-color: var(--color-cyan);
  background: rgba(23, 225, 214, .05);
}

.page-contact .doc-chip__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--color-cyan);
}

.page-contact .doc-chip__name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

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

  .page-contact .contact-compliance p {
    font-size: 15px;
  }
}

@media (min-width: 1040px) {
  .page-contact .contact-arrange {
    grid-template-columns: var(--contact-rail) minmax(0, 1fr);
    grid-template-areas:
      "ch cl"
      "ch wn";
    column-gap: clamp(32px, 4.5vw, 72px);
    row-gap: clamp(36px, 4vw, 56px);
    align-items: start;
  }

  .page-contact .arr-channels {
    align-self: start;
  }

  .page-contact .contact-docs {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-contact .sla-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .check-item,
  .page-contact .doc-chip {
    transition: none;
  }
}
<<<END>>>