.page-contact {
  --pc-gap: clamp(16px, 3vw, 24px);
  padding-bottom: clamp(40px, 8vw, 96px);
}

.page-contact .section + .section {
  margin-top: clamp(40px, 6vw, 80px);
}

.page-contact .section--hero {
  padding-top: clamp(20px, 4vw, 36px);
}

.page-contact .section--tail {
  padding-top: clamp(32px, 5vw, 60px);
}

/* ---------- 封面块 ---------- */

.page-contact .contact-hero {
  padding: clamp(24px, 5vw, 56px) 0 clamp(20px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-contact .eyebrow {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-contact h1 {
  margin: 0 0 20px;
  max-width: 20ch;
  font-family: var(--sans);
  font-size: clamp(30px, 5.4vw, 56px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-contact .lede {
  margin: 0;
  max-width: 44ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-contact .contact-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-contact .contact-jump a {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.4;
  color: var(--grey);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .contact-jump a:hover,
.page-contact .contact-jump a:focus-visible {
  color: var(--green);
  border-color: var(--green);
}

/* ---------- 章节外壳 ---------- */

.page-contact .section-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-contact .section-num {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--blue);
}

.page-contact .section-title {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .section-note {
  margin: 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grey);
}

/* ---------- 01 渠道卡片 ---------- */

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(20px, 3vw, 36px);
  background: var(--carbon-2);
  border: 1px solid var(--blue);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-contact .channel-card--mail::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--green));
}

.page-contact .channel-card--phone {
  background: var(--carbon);
  border-color: var(--line);
}

.page-contact .channel-card:hover {
  border-color: var(--green);
  transform: translateY(-2px);
}

.page-contact .channel-card:focus-within {
  border-color: var(--green);
}

.page-contact .channel-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.page-contact .channel-kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--grey);
}

.page-contact .channel-title {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .channel-addr {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: clamp(15px, 2.1vw, 21px);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--green);
  word-break: break-all;
}

.page-contact .channel-desc {
  margin: 0 0 18px;
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-contact .field-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .field-list li {
  position: relative;
  padding: 10px 0 10px 24px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-soft);
}

.page-contact .field-list li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 14px;
  width: 5px;
  height: 9px;
  border-right: 1.5px solid var(--green);
  border-bottom: 1.5px solid var(--green);
  transform: rotate(42deg);
}

.page-contact .mini-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
}

.page-contact .mini-list li {
  padding: 5px 10px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--grey);
}

.page-contact .channel-foot {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--grey);
}

.page-contact .channel-figure {
  margin: 0;
  overflow: hidden;
  background: var(--carbon-2);
  border: 1px solid var(--line);
}

.page-contact .channel-figure img {
  display: block;
  width: 100%;
  height: clamp(180px, 26vw, 300px);
  object-fit: cover;
  filter: saturate(.85);
}

.page-contact .channel-figure .media-caption {
  margin: 0;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--grey);
}

/* ---------- 02 问题分流 ---------- */

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

.page-contact .route-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  grid-template-areas:
    "idx body"
    ". tag";
  gap: 6px 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .route-index {
  grid-area: idx;
  padding-top: 1px;
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--blue);
}

.page-contact .route-body {
  grid-area: body;
  min-width: 0;
}

.page-contact .route-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
  transition: color .2s var(--ease);
}

.page-contact .route-row:hover .route-title {
  color: var(--green);
}

.page-contact .route-text {
  margin: 0;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-contact .route-text a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-contact .route-text a:hover,
.page-contact .route-text a:focus-visible {
  color: var(--green);
  border-color: var(--green);
}

.page-contact .route-tag {
  grid-area: tag;
  justify-self: start;
}

/* ---------- 03 订正清单 ---------- */

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

.page-contact .check-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .check-box {
  flex: none;
  align-self: flex-start;
  width: 15px;
  height: 15px;
  margin-top: 4px;
  border: 1px solid var(--blue);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-contact .check-item:hover .check-box,
.page-contact .check-item:focus-within .check-box {
  border-color: var(--green);
  background-color: rgba(23, 226, 127, .14);
}

.page-contact .check-label {
  flex: none;
  min-width: 6em;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
}

.page-contact .check-hint {
  flex: 1 1 12ch;
  min-width: 12ch;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--grey);
  opacity: .72;
  transition: opacity .2s var(--ease), color .2s var(--ease);
}

.page-contact .check-item:hover .check-hint,
.page-contact .check-item:focus-within .check-hint {
  opacity: 1;
  color: var(--mist);
}

.page-contact .check-note {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 13px;
  line-height: 1.85;
  color: var(--grey);
}

.page-contact .check-note a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-contact .check-note a:hover,
.page-contact .check-note a:focus-visible {
  color: var(--green);
  border-color: var(--green);
}

/* ---------- 04 流程 ---------- */

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

.page-contact .flow-step {
  position: relative;
  padding: 24px 20px 28px;
  background: var(--carbon);
  transition: background-color .22s var(--ease);
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .28s var(--ease), background-color .28s var(--ease);
}

.page-contact .flow-step:hover {
  background: var(--carbon-2);
}

.page-contact .flow-step:hover::before {
  transform: scaleX(1);
  background: var(--green);
}

.page-contact .flow-num {
  display: block;
  margin-bottom: 16px;
  font-family: var(--mono);
  font-size: 26px;
  line-height: 1;
  color: var(--blue);
}

.page-contact .flow-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-contact .flow-text {
  margin: 0;
  font-size: 13px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-contact .flow-note {
  margin: 20px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--amber);
  font-size: 13px;
  line-height: 1.8;
  color: var(--grey);
}

/* ---------- 05 属地与备案 ---------- */

.page-contact .registry-figure {
  margin: 0 0 clamp(24px, 4vw, 40px);
  overflow: hidden;
  background: var(--carbon-2);
  border: 1px solid var(--line);
}

.page-contact .registry-figure img {
  display: block;
  width: 100%;
  height: clamp(170px, 30vw, 340px);
  object-fit: cover;
}

.page-contact .reg-list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-contact .reg-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .reg-row dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--grey);
}

.page-contact .reg-val {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  word-break: break-word;
}

.page-contact .reg-val--mono {
  font-family: var(--mono);
  color: var(--white);
  word-break: break-all;
}

.page-contact .reg-note {
  margin: 24px 0 0;
  padding-top: 16px;
  max-width: 64ch;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.9;
  color: var(--grey);
}

.page-contact .reg-note a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-contact .reg-note a:hover,
.page-contact .reg-note a:focus-visible {
  color: var(--green);
  border-color: var(--green);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-contact .reg-row {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 800px) {
  .page-contact .route-row {
    grid-template-columns: 52px minmax(0, 1fr) auto;
    grid-template-areas: "idx .page-contact tag";
    gap: 0 20px;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .flow-step {
    padding: 28px 22px 32px;
  }
}

@media (min-width: 940px) {
  .page-contact .channel-grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    grid-template-areas:
      "mail phone"
      "figure figure";
    align-items: start;
  }

  .page-contact .channel-card--mail {
    grid-area: mail;
  }

  .page-contact .channel-card--phone {
    grid-area: phone;
  }

  .page-contact .channel-figure {
    grid-area: figure;
    margin-top: calc(var(--pc-gap) - var(--pc-gap));
  }
}