.page-contact {
  --contact-gap: clamp(1.5rem, 3vw, 2.75rem);
  --contact-shadow: 0 22px 48px -34px rgba(7, 16, 19, 0.85);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

.page-contact .contact-crumb {
  padding-top: 1.15rem;
}

.page-contact .breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.page-contact .section-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}

.page-contact .section-title {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.2vw, 2.15rem);
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-block: clamp(1rem, 2.4vw, 1.75rem) clamp(2rem, 4vw, 3.5rem);
  border-bottom: 1px solid var(--edge);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: var(--contact-gap);
  align-items: start;
}

.page-contact .contact-hero__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6vw, 3.35rem);
  line-height: 1.05;
  letter-spacing: 0.005em;
  color: var(--ink);
}

.page-contact .contact-hero__intro {
  margin: 1rem 0 0;
  max-width: 36rem;
  font-size: clamp(0.98rem, 1.4vw, 1.08rem);
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .contact-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.35rem;
}

.page-contact .contact-jump a {
  display: inline-block;
  padding: 0.38rem 0.62rem;
  border: 1px solid var(--edge);
  background: rgba(255, 255, 255, 0.66);
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-contact .contact-jump a:hover,
.page-contact .contact-jump a:focus-visible {
  color: var(--ink);
  border-color: var(--orange);
  background: var(--white);
}

/* ---------- 渠道卡 ---------- */
.page-contact .channel-card {
  margin-top: clamp(1.5rem, 3vw, 2.1rem);
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  background: var(--rail);
  color: var(--paper);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--orange);
  box-shadow: var(--contact-shadow);
}

.page-contact .channel-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.22rem;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-contact .channel-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel-item {
  display: grid;
  gap: 0.3rem;
  padding-block: 0.95rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .channel-item:last-child {
  border-bottom: 0;
}

.page-contact .channel-item__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mist);
  opacity: 0.78;
}

.page-contact .channel-item__value {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.4vw, 1.18rem);
  line-height: 1.5;
  color: var(--white);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-item__value--text {
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.7;
}

.page-contact .channel-item__value a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 176, 32, 0.55);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .channel-item__value a:hover,
.page-contact .channel-item__value a:focus-visible {
  color: var(--green);
  border-bottom-color: rgba(55, 224, 139, 0.6);
}

.page-contact .channel-card__note {
  margin: 0.95rem 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: rgba(220, 229, 229, 0.78);
}

/* ---------- 首屏右侧 ---------- */
.page-contact .contact-hero__side {
  display: grid;
  gap: 1rem;
}

.page-contact .contact-visual {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--edge);
  background: var(--rail);
}

.page-contact .contact-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-contact .contact-visual__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.6rem 0.9rem 0.75rem;
  background: linear-gradient(to top, rgba(11, 43, 51, 0.94), rgba(11, 43, 51, 0));
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-contact .reply-note {
  padding: 1.05rem 1.15rem;
  background: var(--white);
  border: 1px solid var(--edge);
  border-top: 2px solid var(--teal);
}

.page-contact .reply-note__title {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-contact .reply-note__list {
  margin: 0;
  padding-left: 1.05rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 通用章节 ---------- */
.page-contact .contact-section {
  padding-block: clamp(2rem, 4vw, 3.4rem);
}

.page-contact .contact-section__head {
  display: grid;
  gap: 0.75rem;
  margin-bottom: clamp(1.25rem, 2.6vw, 2rem);
}

.page-contact .section-lead {
  margin: 0;
  max-width: 46rem;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--ink);
}

/* ---------- 材料卡 ---------- */
.page-contact .materials {
  display: grid;
  gap: 1rem;
}

.page-contact .material-card {
  padding: clamp(1rem, 2.2vw, 1.45rem);
  background: var(--white);
  border: 1px solid var(--edge);
  box-shadow: var(--contact-shadow);
}

.page-contact .material-card--accent {
  border-top: 2px solid var(--orange);
}

.page-contact .material-card__tag {
  display: inline-block;
  padding: 0.22rem 0.5rem;
  border: 1px solid rgba(47, 125, 122, 0.32);
  background: rgba(47, 125, 122, 0.1);
  font-family: var(--font-mono);
  font-size: 0.69rem;
  letter-spacing: 0.12em;
  color: var(--teal);
}

.page-contact .material-card--accent .material-card__tag {
  border-color: rgba(255, 106, 43, 0.36);
  background: rgba(255, 106, 43, 0.1);
  color: #B33F12;
}

.page-contact .material-card__title {
  margin: 0.7rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.18rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-contact .material-card ul {
  margin: 0.75rem 0 0;
  padding-left: 1.05rem;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .material-card li {
  margin-bottom: 0.28rem;
}

.page-contact .material-card li:last-child {
  margin-bottom: 0;
}

/* ---------- 问题分流技能树 ---------- */
.page-contact .routing {
  background: var(--rail);
  color: var(--paper);
}

.page-contact .routing .section-title {
  color: var(--white);
}

.page-contact .routing .section-kicker {
  color: var(--green);
}

.page-contact .routing .section-lead {
  color: rgba(220, 229, 229, 0.82);
}

.page-contact .routing__figure {
  position: relative;
  margin: 0 0 clamp(1.4rem, 3vw, 2.2rem);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--rail-soft);
}

.page-contact .routing__figure img {
  display: block;
  width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  opacity: 0.88;
}

.page-contact .routing__figure figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.4rem 0.9rem 0.7rem;
  background: linear-gradient(to top, rgba(7, 16, 19, 0.9), rgba(7, 16, 19, 0));
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.13em;
  color: var(--mist);
}

.page-contact .routing__tree {
  display: grid;
  gap: 0;
}

.page-contact .routing__node {
  border-top: 1px solid var(--line-soft);
}

.page-contact .routing__node:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .routing__node summary {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) 1.2rem;
  align-items: center;
  gap: 0.7rem;
  padding-block: 0.95rem;
  list-style: none;
  cursor: pointer;
}

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

.page-contact .routing__node summary:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

.page-contact .routing__no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--green);
}

.page-contact .routing__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-contact .routing__mark {
  position: relative;
  width: 1.2rem;
  height: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.page-contact .routing__mark::before,
.page-contact .routing__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--orange);
  transform: translate(-50%, -50%);
}

.page-contact .routing__mark::before {
  width: 0.62rem;
  height: 1px;
}

.page-contact .routing__mark::after {
  width: 1px;
  height: 0.62rem;
  transition: opacity 0.2s var(--ease);
}

.page-contact .routing__node[open] .routing__mark::after {
  opacity: 0;
}

.page-contact .routing__body {
  margin-left: 2.9rem;
  padding: 0 0 1.1rem 0.9rem;
  border-left: 1px solid var(--line-soft);
}

.page-contact .routing__body p {
  margin: 0 0 0.7rem;
  font-size: 0.94rem;
  line-height: 1.85;
  color: rgba(247, 243, 234, 0.84);
}

.page-contact .routing__body a {
  display: inline-block;
  margin-right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 176, 32, 0.45);
}

.page-contact .routing__body a:hover,
.page-contact .routing__body a:focus-visible {
  color: var(--green);
  border-bottom-color: rgba(55, 224, 139, 0.55);
}

/* ---------- 备案条 ---------- */
.page-contact .regional {
  background: rgba(220, 229, 229, 0.42);
  border-top: 1px solid var(--edge);
  border-bottom: 1px solid var(--edge);
}

.page-contact .regional__inner {
  display: grid;
  gap: 0.9rem;
  padding-block: 1.25rem;
}

.page-contact .regional__item {
  display: grid;
  gap: 0.28rem;
}

.page-contact .regional__key {
  font-family: var(--font-mono);
  font-size: 0.69rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--teal);
}

.page-contact .regional__val {
  font-size: 0.94rem;
  line-height: 1.65;
  color: var(--ink);
}

.page-contact .regional__val--mono {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
}

/* ---------- 合作与媒体 ---------- */
.page-contact .partner__grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
}

.page-contact .partner__text {
  margin: 1rem 0 0;
  max-width: 40rem;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .partner__steps {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--edge);
}

.page-contact .partner__step {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.8rem;
  padding-block: 0.95rem;
  border-bottom: 1px solid var(--edge);
}

.page-contact .partner__step-no {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--orange);
  padding-top: 0.14rem;
}

.page-contact .partner__step-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-contact .partner__step p {
  margin: 0.32rem 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(7, 16, 19, 0.78);
}

/* ---------- 收尾 ---------- */
.page-contact .contact-cta {
  padding-block: clamp(2rem, 4vw, 3.2rem) clamp(2.5rem, 5vw, 4rem);
}

.page-contact .contact-cta__box {
  display: grid;
  gap: 1.15rem;
  padding: clamp(1.4rem, 3vw, 2.4rem);
  background: var(--rail);
  border-left: 3px solid var(--green);
}

.page-contact .contact-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .contact-cta__text {
  margin: 0.6rem 0 0;
  max-width: 44rem;
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(220, 229, 229, 0.84);
}

.page-contact .contact-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 48rem) {
  .page-contact .materials {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-contact .material-card--accent {
    transform: translateY(0.75rem);
  }

  .page-contact .regional__inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }

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

@media (min-width: 60rem) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-contact .contact-section__head {
    grid-template-columns: minmax(0, 20rem) minmax(0, 1fr);
    align-items: end;
    gap: clamp(1.5rem, 4vw, 3rem);
  }

  .page-contact .contact-section__head .section-title {
    margin-top: 0.6rem;
  }

  .page-contact .routing__tree {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(1.5rem, 4vw, 3.5rem);
  }

  .page-contact .routing__node:nth-last-child(2) {
    border-bottom: 1px solid var(--line-soft);
  }

  .page-contact .partner__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-contact .contact-visual img {
    aspect-ratio: 4 / 3;
  }
}

@media (min-width: 80rem) {
  .page-contact .contact-hero__lead {
    padding-right: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-jump a,
  .page-contact .channel-item__value a,
  .page-contact .routing__mark::after {
    transition: none;
  }

  .page-contact .material-card--accent {
    transform: none;
  }
}
<<<END>>>