.page-contact {
  background: var(--void);
  color: var(--silver);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding-top: 40px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.04em;
  color: var(--steel);
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .breadcrumb li + li::before {
  content: "／";
  margin-right: 6px;
  color: var(--grid);
}

.page-contact .breadcrumb a {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-head {
  padding-top: 48px;
  padding-bottom: 8px;
}

.page-contact .ct-kicker {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.16em;
  color: var(--steel);
  padding-left: 28px;
  position: relative;
}

.page-contact .ct-kicker::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 18px;
  height: 1px;
  background: var(--amber);
}

.page-contact .ct-head__title {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 9vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--silver);
}

.page-contact .ct-head__lede {
  max-width: 34em;
  margin: 0 0 36px;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .ct-head__meta {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
}

.page-contact .ct-head__meta li {
  flex: 1 1 100%;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 0;
  border-bottom: 1px solid var(--grid);
  font-size: var(--step-2);
  color: var(--steel);
  letter-spacing: 0.02em;
}

.page-contact .ct-head__meta li:last-child {
  border-bottom: 0;
}

.page-contact .ct-head__num {
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--amber);
  line-height: 1.2;
}

/* ---------- 顶部拓扑图 ---------- */
.page-contact .ct-topology-wrap {
  margin-top: 40px;
}

.page-contact .ct-topology {
  margin: 0;
  border: 1px solid var(--grid);
  background: var(--hull);
}

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

.page-contact .media-frame__caption {
  padding: 14px 16px;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--steel);
  border-top: 1px solid var(--grid);
}

/* ---------- 章节通用 ---------- */
.page-contact .section {
  padding-block: 64px 0;
}

.page-contact .chapter__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.6vw, 2.35rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--silver);
}

/* ---------- 三类通道 ---------- */
.page-contact .ct-channels__note {
  max-width: 42em;
  margin: 0 0 32px;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

.page-contact .ct-band {
  display: grid;
  grid-template-columns: 1fr;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--grid);
}

.page-contact .ct-band__item {
  position: relative;
  padding: 28px 24px 32px;
  border-bottom: 1px solid var(--grid);
  background: linear-gradient(180deg, rgba(11, 35, 55, 0.35) 0%, rgba(6, 20, 32, 0) 100%);
  transition: background 0.45s var(--ease);
}

.page-contact .ct-band__item:last-child {
  border-bottom: 0;
}

@media (hover: hover) {
  .page-contact .ct-band__item:hover {
    background: linear-gradient(180deg, rgba(18, 53, 79, 0.85) 0%, rgba(18, 53, 79, 0.25) 100%);
  }
}

.page-contact .ct-band__index {
  margin: 0 0 14px;
  font-size: var(--step-1);
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-contact .ct-band__num {
  font-weight: 700;
  font-size: var(--step-2);
  color: var(--amber);
}

.page-contact .ct-band__title {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: var(--step-4);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0;
  color: var(--silver);
}

.page-contact .ct-band__desc {
  margin: 0 0 18px;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

.page-contact .ct-band__attach {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--grid);
  font-size: var(--step-1);
  letter-spacing: 0.06em;
  color: var(--amber-soft);
}

/* ---------- 问询准备清单 ---------- */
.page-contact .ct-prep__note {
  max-width: 42em;
  margin: 0 0 28px;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

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

.page-contact .ct-prep__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 24px 0;
  border-bottom: 1px solid var(--grid);
}

.page-contact .ct-prep__num {
  font-size: var(--step-2);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--amber);
  line-height: 1.9;
}

.page-contact .ct-prep__title {
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: var(--step-4);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0;
  color: var(--silver);
}

.page-contact .ct-prep__body p {
  max-width: 46em;
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 响应节奏刻度 ---------- */
.page-contact .ct-scale__note {
  max-width: 42em;
  margin: 0 0 32px;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

.page-contact .ct-scale__marks {
  display: grid;
  grid-template-columns: 1fr;
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--grid);
}

.page-contact .ct-scale__marks > li {
  position: relative;
  padding: 0 0 28px 26px;
  border-bottom: 1px solid var(--grid);
}

.page-contact .ct-scale__marks > li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .ct-scale__marks > li::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  background: var(--amber);
}

.page-contact .ct-scale__mark {
  display: block;
  margin-bottom: 8px;
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  color: var(--amber-soft);
}

.page-contact .ct-scale__label {
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: var(--step-4);
  font-weight: 700;
  letter-spacing: 0;
  color: var(--silver);
}

.page-contact .ct-scale__marks p {
  max-width: 34em;
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 问询模板 ---------- */
.page-contact .ct-tpl__note {
  max-width: 42em;
  margin: 0 0 32px;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

.page-contact .ct-tpl__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-contact .ct-tpl__card {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--grid);
}

.page-contact .ct-tpl__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(8, 24, 42, 0.18);
}

.page-contact .ct-tpl__tag {
  font-size: var(--step-1);
  letter-spacing: 0.12em;
  color: var(--ink);
  background: var(--amber);
  padding: 3px 8px;
  white-space: nowrap;
}

.page-contact .ct-tpl__title {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--step-3);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.5;
  color: var(--ink);
  text-align: right;
}

.page-contact .ct-tpl__code {
  margin: 0;
  padding: 22px 20px 26px;
  font-family: var(--font-mono);
  font-size: var(--step-2);
  line-height: 2;
  letter-spacing: 0.02em;
  color: var(--ink);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

/* ---------- 联系方式 ---------- */
.page-contact .ct-reach__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-contact .ct-reach__fig {
  margin: 0;
  border: 1px solid var(--grid);
  background: var(--hull);
}

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

.page-contact .ct-reach__fig .media-frame__caption {
  padding: 14px 16px;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--steel);
  border-top: 1px solid var(--grid);
}

.page-contact .ct-reach__intro {
  max-width: 40em;
  margin: 0 0 28px;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

.page-contact .ct-reach__list {
  margin: 0 0 26px;
  padding: 0;
  border-top: 1px solid var(--grid);
}

.page-contact .ct-reach__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--grid);
}

.page-contact .ct-reach__row dt {
  margin: 0;
  font-size: var(--step-1);
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-contact .ct-reach__row dd {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.7;
  color: var(--silver);
  word-break: break-word;
}

.page-contact .ct-reach__boundary {
  max-width: 40em;
  margin: 0;
  padding: 18px 20px;
  border-left: 2px solid var(--amber);
  background: rgba(11, 35, 55, 0.6);
  font-size: var(--step-2);
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 相关页面 ---------- */
.page-contact .ct-next__note {
  max-width: 42em;
  margin: 0 0 28px;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

.page-contact .ct-next__list {
  display: grid;
  grid-template-columns: 1fr;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--grid);
}

.page-contact .ct-next__list li {
  border-bottom: 1px solid var(--grid);
}

.page-contact .ct-next__list a {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 22px 0;
  text-decoration: none;
  transition: padding-left 0.4s var(--ease), background 0.4s var(--ease);
}

.page-contact .ct-next__list a:hover,
.page-contact .ct-next__list a:focus-visible {
  padding-left: 14px;
  background: rgba(18, 53, 79, 0.45);
}

.page-contact .ct-next__idx {
  font-size: var(--step-1);
  letter-spacing: 0.06em;
  color: var(--steel);
}

.page-contact .ct-next__label {
  font-family: var(--font-display);
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--silver);
  transition: color 0.3s var(--ease);
}

.page-contact .ct-next__list a:hover .ct-next__label,
.page-contact .ct-next__list a:focus-visible .ct-next__label {
  color: var(--amber-soft);
}

.page-contact .ct-next__desc {
  font-size: var(--step-2);
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-contact .breadcrumb {
    padding-top: 56px;
  }

  .page-contact .ct-head {
    padding-top: 56px;
  }

  .page-contact .ct-head__meta li {
    flex: 1 1 0;
    padding: 20px 24px 20px 0;
    border-bottom: 0;
    border-right: 1px solid var(--grid);
  }

  .page-contact .ct-head__meta li:first-child {
    padding-left: 0;
  }

  .page-contact .ct-head__meta li:last-child {
    border-right: 0;
  }

  .page-contact .ct-head__meta li + li {
    padding-left: 24px;
  }

  .page-contact .ct-prep__item {
    grid-template-columns: 84px 1fr;
    gap: 28px;
    padding: 28px 0;
  }

  .page-contact .ct-scale__marks {
    border-left: 0;
    border-top: 1px solid var(--grid);
    padding-top: 0;
  }

  .page-contact .ct-scale__marks > li {
    padding: 30px 26px 30px 0;
    border-bottom: 0;
    border-right: 1px solid var(--grid);
  }

  .page-contact .ct-scale__marks > li:last-child {
    padding-bottom: 30px;
    border-right: 0;
    padding-right: 0;
  }

  .page-contact .ct-scale__marks > li::before {
    left: 0;
    top: -5px;
  }

  .page-contact .ct-next__list a {
    grid-template-columns: 130px 160px 1fr;
    align-items: baseline;
    gap: 20px;
    padding: 24px 0;
  }

  .page-contact .ct-reach__row {
    grid-template-columns: 190px 1fr;
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-contact .ct-band {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .ct-band__item {
    border-bottom: 0;
    border-right: 1px solid var(--grid);
    padding: 34px 28px 38px;
  }

  .page-contact .ct-band__item:last-child {
    border-right: 0;
  }

  .page-contact .ct-tpl__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .page-contact .ct-scale__marks {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .ct-reach__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-contact .section {
    padding-block: 88px 0;
  }

  .page-contact .ct-band__item {
    padding: 40px 34px 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-band__item,
  .page-contact .ct-next__list a,
  .page-contact .breadcrumb a {
    transition: none;
  }
}