.page-contact {
  --pc-rule: 1px solid var(--survey);
  --pc-dash: 2px dashed var(--survey);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: clip;
}

.page-contact .section {
  padding-block: clamp(32px, 6vw, 72px);
  min-width: 0;
}

.page-contact .section__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 36px);
  min-width: 0;
}

.page-contact .section-num {
  margin: 0;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--teal);
}

.page-contact .type-sub {
  margin: 0;
  font-family: var(--f-display);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-contact .eyebrow {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--teal);
}

.page-contact .coord-readout {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--survey);
}

.page-contact .lede {
  margin: 0;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .note {
  font-family: var(--f-serif);
  font-size: 14px;
  line-height: 1.8;
  color: var(--survey);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  padding-top: clamp(20px, 3vw, 36px);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  min-width: 0;
}

.page-contact .contact-hero__main,
.page-contact .contact-hero__aside {
  min-width: 0;
}

.page-contact .contact-hero__title {
  margin: 8px 0 16px;
  font-size: clamp(38px, 8vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--ink);
}

.page-contact .contact-hero__lede {
  max-width: 34em;
  margin-bottom: clamp(22px, 3.4vw, 34px);
}

.page-contact .contact-direct {
  border-bottom: var(--pc-rule);
}

.page-contact .contact-direct__row {
  display: grid;
  gap: 6px;
  padding: 14px 0 16px;
  border-top: var(--pc-rule);
}

.page-contact .contact-direct__key {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--survey);
}

.page-contact .contact-direct__value {
  display: block;
  font-family: var(--f-mono);
  font-size: clamp(16px, 2.6vw, 27px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-direct__value--phone {
  font-size: clamp(26px, 6vw, 50px);
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow-wrap: normal;
  word-break: normal;
}

.page-contact .contact-direct__value--addr {
  font-family: var(--f-body);
  font-size: clamp(16px, 2vw, 21px);
  font-weight: 500;
  letter-spacing: 0;
}

.page-contact .contact-hero__note {
  margin: 16px 0 0;
  max-width: 36em;
}

.page-contact .contact-hero__aside {
  display: grid;
  gap: clamp(16px, 2.5vw, 22px);
  align-content: start;
}

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

.page-contact .contact-hero__figure .figure__frame,
.page-contact .flow-figure .figure__frame {
  border: var(--border);
  box-shadow: var(--shadow-hard-sm);
  background: var(--mist);
  overflow: hidden;
}

.page-contact .contact-hero__figure .figure__img,
.page-contact .flow-figure .figure__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-width: 100%;
}

.page-contact .contact-hero__figure .figure__caption,
.page-contact .flow-figure .figure__caption {
  margin-top: 12px;
  font-family: var(--f-serif);
  font-size: 13px;
  line-height: 1.7;
  color: var(--survey);
}

.page-contact .contact-window {
  padding: clamp(18px, 2.6vw, 26px);
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-contact .contact-window__title {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

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

.page-contact .contact-window__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px 14px;
  padding: 9px 0;
  border-top: 1px solid rgba(244, 237, 223, 0.22);
}

.page-contact .contact-window__row:first-child {
  border-top: none;
}

.page-contact .contact-window__row dt {
  margin: 0;
  font-size: 13px;
  color: rgba(244, 237, 223, 0.72);
}

.page-contact .contact-window__row dd {
  margin: 0;
  font-size: 13px;
  color: var(--paper);
}

.page-contact .contact-window__note {
  margin: 0;
  font-size: 12px;
  line-height: 1.75;
  color: rgba(244, 237, 223, 0.66);
}

/* ---------- 通道分工 ---------- */

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 24px);
}

.page-contact .channel-card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(18px, 2.4vw, 26px);
  border: var(--border);
  background: var(--paper);
  box-shadow: var(--shadow-hard-sm);
  min-width: 0;
}

.page-contact .channel-card--main {
  background: var(--mist);
  box-shadow: var(--shadow-hard);
}

.page-contact .channel-card .tag {
  justify-self: start;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--f-display);
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .channel-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ink);
}

.page-contact .channel-card__meta {
  margin: 2px 0 0;
  padding-top: 10px;
  border-top: var(--pc-rule);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--teal);
}

/* ---------- 报障信息 ---------- */

.page-contact .prepare {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 40px);
}

.page-contact .prepare__intro {
  display: grid;
  gap: 10px;
  align-content: start;
  min-width: 0;
}

.page-contact .prepare__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--pc-rule);
  min-width: 0;
}

.page-contact .prepare__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px 0;
  border-bottom: var(--pc-rule);
}

.page-contact .prepare__idx {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 26px;
  padding: 0 6px;
  background: var(--ink);
  color: var(--amber);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-contact .prepare__title {
  grid-column: 2;
  margin: 0;
  font-family: var(--f-display);
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .prepare__item p {
  grid-column: 2;
  margin: 2px 0 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ink);
}

/* ---------- 问题类型 ---------- */

.page-contact .issue-switch {
  border: var(--border);
  box-shadow: var(--shadow-hard-sm);
  background: var(--paper);
  min-width: 0;
}

.page-contact .issue-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-contact .issue-switch__tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--survey);
  border-bottom: var(--border);
}

.page-contact .issue-switch__tab {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 10px 8px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  text-align: center;
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease;
}

.page-contact .issue-switch__tab:hover {
  background: var(--amber-pale);
}

.page-contact .issue-switch__input:focus-visible ~ .issue-switch__tabs {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

.page-contact .issue-switch__input:nth-of-type(1):checked ~ .issue-switch__tabs .issue-switch__tab:nth-child(1),
.page-contact .issue-switch__input:nth-of-type(2):checked ~ .issue-switch__tabs .issue-switch__tab:nth-child(2),
.page-contact .issue-switch__input:nth-of-type(3):checked ~ .issue-switch__tabs .issue-switch__tab:nth-child(3),
.page-contact .issue-switch__input:nth-of-type(4):checked ~ .issue-switch__tabs .issue-switch__tab:nth-child(4) {
  background: var(--ink);
  color: var(--amber);
}

.page-contact .issue-switch__panels {
  padding: clamp(18px, 3vw, 30px);
}

.page-contact .issue-panel {
  display: none;
}

.page-contact .issue-switch__input:nth-of-type(1):checked ~ .issue-switch__panels > .issue-panel:nth-child(1),
.page-contact .issue-switch__input:nth-of-type(2):checked ~ .issue-switch__panels > .issue-panel:nth-child(2),
.page-contact .issue-switch__input:nth-of-type(3):checked ~ .issue-switch__panels > .issue-panel:nth-child(3),
.page-contact .issue-switch__input:nth-of-type(4):checked ~ .issue-switch__panels > .issue-panel:nth-child(4) {
  display: block;
}

.page-contact .issue-panel__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--teal);
}

.page-contact .issue-panel__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-contact .issue-panel__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-contact .issue-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--ink);
  background: var(--amber);
}

.page-contact .issue-panel__hint {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: var(--pc-rule);
  font-family: var(--f-serif);
  font-size: 14px;
  line-height: 1.8;
  color: var(--teal);
}

/* ---------- 处理流程 ---------- */

.page-contact .flow-figure {
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-contact .flow-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .flow-step {
  position: relative;
  padding: 0 0 26px 24px;
  margin-left: 6px;
  border-left: var(--pc-dash);
  min-width: 0;
}

.page-contact .flow-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 2px;
  width: 12px;
  height: 12px;
  background: var(--paper);
  border: 2px solid var(--ink);
}

.page-contact .flow-step:last-child::before {
  background: var(--amber);
}

.page-contact .flow-step__num {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--teal);
}

.page-contact .flow-step__title {
  margin: 0 0 6px;
  font-family: var(--f-display);
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 归档资料 ---------- */

.page-contact .archive__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.6vw, 44px);
}

.page-contact .archive__main,
.page-contact .archive__aside {
  min-width: 0;
}

.page-contact .archive__list {
  list-style: none;
  margin: 18px 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--pc-rule);
}

.page-contact .archive__list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: var(--pc-rule);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .archive__list .mono {
  color: var(--teal);
  font-weight: 600;
}

.page-contact .archive__copy {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .archive__note {
  display: grid;
  gap: 14px;
  padding: clamp(18px, 3vw, 26px);
}

.page-contact .archive__note-title {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--purple);
}

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

.page-contact .archive__links .btn {
  display: flex;
  width: 100%;
  justify-content: center;
  text-align: center;
  font-size: 14px;
}

.page-contact .archive__note-text {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 结尾 ---------- */

.page-contact .contact-tail {
  padding-bottom: clamp(24px, 4vw, 48px);
}

.page-contact .contact-tail__card {
  display: grid;
  gap: 12px;
  justify-items: start;
  padding: clamp(24px, 4.6vw, 48px);
}

.page-contact .contact-tail__eyebrow {
  color: var(--amber);
  margin: 0;
}

.page-contact .contact-tail__title {
  margin: 0;
  color: var(--paper);
}

.page-contact .contact-tail__card p {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 237, 223, 0.82);
}

.page-contact .contact-tail__card .btn {
  margin-top: 6px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .issue-switch__tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .issue-panel__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 24px;
  }
}

@media (min-width: 800px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-contact .flow-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .flow-step {
    padding: 24px 22px 0 0;
    margin-left: 0;
    border-left: none;
    border-top: var(--pc-dash);
  }

  .page-contact .flow-step:last-child {
    border-top-color: transparent;
  }

  .page-contact .flow-step::before {
    left: 0;
    top: -7px;
  }
}

@media (min-width: 900px) {
  .page-contact .prepare {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-contact .archive__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    column-gap: clamp(32px, 5vw, 64px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .issue-switch__tab {
    transition-duration: 0ms;
  }
}