.page-contact {
  --pc-sec-pad: clamp(56px, 9vw, 108px);
  background: var(--ice);
  color: var(--char);
  font-family: var(--font-body);
}

.page-contact .pc-sec {
  padding-block: var(--pc-sec-pad);
}

.page-contact .pc-intro {
  padding-block: clamp(24px, 4vw, 44px) var(--pc-sec-pad);
}

.page-contact .pc-sec + .pc-sec {
  border-top: 1px solid var(--cool);
}

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

.page-contact figure {
  margin: 0;
}

/* ---------- 首屏 ---------- */

.page-contact .breadcrumbs {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--lake);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 30px;
}

.page-contact .breadcrumbs a {
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px solid var(--cool);
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  border-bottom-color: var(--maple);
}

.page-contact .pc-head h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 7.4vw, 56px);
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 14px 0 0;
  max-width: 20em;
}

.page-contact .pc-lede {
  font-size: clamp(16px, 2.1vw, 18px);
  line-height: 1.85;
  color: var(--char);
  margin: 18px 0 0;
  max-width: 34em;
}

.page-contact .pc-direct {
  margin-top: clamp(28px, 4vw, 44px);
  background: var(--ink);
  border-radius: var(--r-xl);
  padding: clamp(24px, 4vw, 36px);
  display: grid;
  gap: 22px;
}

.page-contact .pc-direct__item {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.page-contact .pc-direct__k {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cool);
}

.page-contact .pc-direct__v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(16px, 4.2vw, 22px);
  line-height: 1.4;
  color: var(--ice);
  overflow-wrap: anywhere;
}

.page-contact .pc-direct__v a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 2px solid var(--amber);
  padding-bottom: 2px;
}

.page-contact .pc-direct__v a:hover,
.page-contact .pc-direct__v a:focus-visible {
  color: var(--amber);
}

.page-contact .pc-direct__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--cool);
  max-width: 44em;
  border-top: 1px solid var(--ink-2);
  padding-top: 16px;
}

/* ---------- 区块标题 ---------- */

.page-contact .pc-sec-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 4.6vw, 36px);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0;
}

.page-contact .pc-sec-head p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--char);
  max-width: 36em;
}

.page-contact .pc-sec-head--dark h2 {
  color: var(--ice);
}

.page-contact .pc-sec-head--dark p {
  color: var(--cool);
}

/* ---------- 蓝图网格底色 ---------- */

.page-contact .pc-grid-bg {
  background-image:
    linear-gradient(var(--cool) 1px, transparent 1px),
    linear-gradient(90deg, var(--cool) 1px, transparent 1px);
  background-size: 46px 46px;
  background-position: -1px -1px;
}

/* ---------- 三条通道 ---------- */

.page-contact .pc-lanes-grid {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .pc-lane {
  position: relative;
  background: var(--ice);
  border: 1px solid var(--cool);
  border-radius: var(--r-lg);
  padding: 26px 22px 24px;
  min-width: 0;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.page-contact .pc-lane::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 3px;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  background: var(--maple);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.45s var(--ease);
}

.page-contact .pc-lane:hover,
.page-contact .pc-lane:focus-within {
  transform: translateY(-5px);
  border-color: var(--maple-soft);
  box-shadow: 0 18px 36px -24px rgba(13, 27, 42, 0.55);
}

.page-contact .pc-lane:hover::before,
.page-contact .pc-lane:focus-within::before {
  transform: scaleX(1);
}

.page-contact .pc-lane__no {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 34px;
  line-height: 1;
  color: var(--maple);
  letter-spacing: 0.02em;
}

.page-contact .pc-lane h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin: 16px 0 0;
}

.page-contact .pc-lane__lead {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--char);
}

.page-contact .pc-lane__meta {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--cool);
}

.page-contact .pc-lane__meta dt {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.09em;
  color: var(--ink-2);
  margin-top: 14px;
}

.page-contact .pc-lane__meta dt:first-child {
  margin-top: 0;
}

.page-contact .pc-lane__meta dd {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--char);
}

.page-contact .pc-lane__link {
  display: inline-block;
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 2px solid var(--cool);
  padding-bottom: 2px;
}

.page-contact .pc-lane__link:hover,
.page-contact .pc-lane__link:focus-visible {
  border-bottom-color: var(--maple);
  color: var(--maple);
}

/* ---------- 处理流程 ---------- */

.page-contact .pc-flow {
  background: var(--ink);
  color: var(--ice);
}

.page-contact .pc-flow-head {
  display: grid;
  gap: 26px;
}

.page-contact .pc-flow-sla {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  padding: 18px 22px;
  border: 1px solid var(--ink-2);
  border-radius: var(--r-lg);
  background: rgba(246, 242, 234, 0.04);
  align-self: start;
}

.page-contact .pc-flow-sla__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(46px, 11vw, 68px);
  line-height: 0.9;
  color: var(--amber);
}

.page-contact .pc-flow-sla__unit {
  font-family: var(--font-display);
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: var(--cool);
}

.page-contact .pc-figure--flow {
  margin-top: 34px;
  border: 1px solid var(--ink-2);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-2);
}

.page-contact .pc-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .pc-step {
  border: 1px solid var(--ink-2);
  border-radius: var(--r-lg);
  padding: 0 18px;
  background: rgba(246, 242, 234, 0.03);
  min-width: 0;
}

.page-contact .pc-step summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--ice);
}

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

.page-contact .pc-step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--amber);
}

.page-contact .pc-step details[open] summary::after {
  content: "–";
}

.page-contact .pc-step__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--amber);
}

.page-contact .pc-step p {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--cool);
}

/* ---------- 提交清单 ---------- */

.page-contact .pc-prep-list {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .pc-prep-label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 18px 18px 16px;
  border: 1px solid var(--cool);
  border-radius: var(--r-md);
  background: var(--ice);
  cursor: pointer;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.page-contact .pc-prep-label:hover,
.page-contact .pc-prep-label:focus-within {
  border-color: var(--lake);
}

.page-contact .pc-prep-check {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  border: 1px solid var(--steel);
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .pc-prep-check:checked {
  background: var(--maple);
  border-color: var(--maple);
}

.page-contact .pc-prep-check:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: 2px;
}

.page-contact .pc-prep-body {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.page-contact .pc-prep-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.05em;
  color: var(--ink);
}

.page-contact .pc-prep-check:checked ~ .pc-prep-body .pc-prep-name {
  color: var(--maple);
}

.page-contact .pc-prep-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--char);
}

.page-contact .pc-prep-outro {
  margin: 26px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--char);
  max-width: 40em;
}

.page-contact .pc-prep-outro a,
.page-contact .pc-registry-links a {
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 2px solid var(--amber);
  padding-bottom: 1px;
}

.page-contact .pc-prep-outro a:hover,
.page-contact .pc-prep-outro a:focus-visible,
.page-contact .pc-registry-links a:hover,
.page-contact .pc-registry-links a:focus-visible {
  color: var(--maple);
  border-bottom-color: var(--maple);
}

/* ---------- 运营与备案 ---------- */

.page-contact .pc-registry-grid {
  display: grid;
  gap: 30px;
}

.page-contact .pc-figure--map {
  border: 1px solid var(--cool);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-2);
}

.page-contact .pc-registry-body h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 4.6vw, 34px);
  line-height: 1.22;
  color: var(--ink);
  margin: 12px 0 0;
}

.page-contact .pc-registry-body > p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--char);
  max-width: 36em;
}

.page-contact .pc-registry-facts {
  margin: 26px 0 0;
  display: grid;
  gap: 1px;
  background: var(--cool);
  border: 1px solid var(--cool);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-contact .pc-registry-fact {
  background: var(--ice);
  padding: 16px 18px;
  display: grid;
  gap: 6px;
}

.page-contact .pc-registry-fact dt {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.09em;
  color: var(--ink-2);
}

.page-contact .pc-registry-fact dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--char);
  overflow-wrap: anywhere;
}

.page-contact .pc-registry-note {
  margin: 22px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--amber);
  background: rgba(224, 164, 59, 0.1);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-contact .pc-registry-links {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--char);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .pc-direct {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 24px 32px;
  }

  .page-contact .pc-direct__note {
    grid-column: 1 / -1;
  }

  .page-contact .pc-lanes-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .pc-prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .pc-prep-item:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-flow-head {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 40px;
  }

  .page-contact .pc-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
    margin-top: 30px;
  }

  .page-contact .pc-step {
    position: relative;
  }

  .page-contact .pc-step::before {
    content: "";
    position: absolute;
    top: 50%;
    left: -22px;
    width: 22px;
    height: 1px;
    background: var(--lake);
  }

  .page-contact .pc-step:first-child::before {
    display: none;
  }

  .page-contact .pc-registry-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: center;
    gap: 48px;
  }
}

@media (min-width: 1120px) {
  .page-contact .pc-lanes-grid {
    gap: 24px;
  }

  .page-contact .pc-lane {
    padding: 30px 26px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-lane,
  .page-contact .pc-lane::before,
  .page-contact .pc-prep-label,
  .page-contact .pc-prep-check {
    transition: none;
  }

  .page-contact .pc-lane:hover,
  .page-contact .pc-lane:focus-within {
    transform: none;
  }
}