.page-contact {
  --pc-line: rgba(18, 96, 110, .24);
  --pc-line-soft: rgba(11, 59, 69, .1);
  display: block;
  background: var(--gi-white);
  color: var(--gi-ink);
  overflow-wrap: break-word;
}

.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--gi-lake);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */
.page-contact__masthead {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(34px, 5vw, 60px);
  background:
    radial-gradient(120% 92% at 90% -12%, rgba(18, 96, 110, .16) 0%, rgba(18, 96, 110, 0) 62%),
    linear-gradient(180deg, var(--gi-mist) 0%, rgba(216, 231, 230, .42) 56%, var(--gi-white) 100%);
  border-bottom: 1px solid var(--gi-rule);
}

.page-contact__title {
  margin: 14px 0 0;
  font-family: var(--gi-font-display);
  font-weight: 700;
  font-size: clamp(28px, 6vw, 52px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--gi-lake-deep);
  max-width: 20em;
}

.page-contact__lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.82;
  color: var(--gi-ink);
}

.page-contact__strip {
  margin-top: clamp(26px, 4vw, 42px);
  display: grid;
  gap: 1px;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}

.page-contact__strip-cell {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 15px 18px;
  background: var(--gi-white);
}

.page-contact__strip-key {
  margin: 0;
  font-family: var(--gi-font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--gi-gray);
}

.page-contact__strip-val {
  margin: 0;
  font-family: var(--gi-font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--gi-lake-deep);
}

/* ---------- 区块骨架 ---------- */
.page-contact__block {
  padding: clamp(44px, 7vw, 86px) 0;
  border-top: 1px solid var(--gi-rule);
}

.page-contact__block:first-of-type {
  border-top: 0;
}

/* ---------- 01 联系方式 ---------- */
.page-contact__register {
  margin-top: clamp(22px, 3.4vw, 36px);
  display: grid;
  gap: clamp(22px, 3.4vw, 34px);
}

.page-contact__card {
  padding: clamp(20px, 3vw, 30px);
  background: var(--gi-white);
  border: 1px solid var(--gi-rule);
  border-top: 3px solid var(--gi-lake);
  box-shadow: var(--gi-shadow-paper);
}

.page-contact__field {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px dashed var(--pc-line);
}

.page-contact__field:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact__field:last-child {
  padding-bottom: 0;
}

.page-contact__key {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--gi-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gi-gray);
}

.page-contact__key-num {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gi-yellow);
  color: var(--gi-ink);
  font-size: 11px;
  letter-spacing: 0;
}

.page-contact__value {
  margin: 0;
  font-family: var(--gi-font-mono);
  font-size: clamp(15px, 2.6vw, 18px);
  line-height: 1.5;
  color: var(--gi-lake-deep);
  overflow-wrap: anywhere;
}

.page-contact__value--plain {
  font-family: var(--gi-font-body);
  font-size: 17px;
  line-height: 1.72;
  color: var(--gi-ink);
  overflow-wrap: break-word;
}

.page-contact__hint {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--gi-gray);
}

.page-contact__figure {
  margin: 0;
  padding: 10px;
  background: var(--gi-paper);
  border: 1px solid var(--gi-rule-soft);
  box-shadow: 6px 6px 0 0 rgba(11, 59, 69, .09);
}

.page-contact__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--gi-rule-soft);
}

.page-contact__figcaption {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--gi-rule-soft);
  font-size: 13px;
  line-height: 1.65;
  color: var(--gi-gray);
}

/* ---------- 02 咨询前的准备 ---------- */
.page-contact__prep {
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-contact__prep-title {
  margin: 0 0 6px;
  font-family: var(--gi-font-display);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.42;
  color: var(--gi-lake-deep);
}

.page-contact__prep-text {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--gi-ink);
}

.page-contact__prep-text a,
.page-contact__topic-body a {
  color: var(--gi-lake);
  text-decoration: underline;
  text-decoration-color: rgba(18, 96, 110, .38);
  text-underline-offset: 3px;
}

.page-contact__prep-text a:hover,
.page-contact__topic-body a:hover {
  color: var(--gi-crimson);
  text-decoration-color: rgba(166, 50, 42, .5);
}

.page-contact__regions {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-contact__regions li {
  padding: 4px 10px;
  background: var(--gi-mist);
  border: 1px solid var(--pc-line);
  font-family: var(--gi-font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--gi-lake-deep);
}

/* ---------- 03 常见咨询主题 ---------- */
.page-contact__topics {
  margin-top: clamp(24px, 3.4vw, 38px);
  border-top: 1px solid var(--gi-lake);
}

.page-contact__topic {
  border-bottom: 1px solid var(--gi-rule);
}

.page-contact__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  transition: background var(--gi-speed) ease;
}

.page-contact__summary::-webkit-details-marker {
  display: none;
}

.page-contact__summary:hover {
  background: rgba(18, 96, 110, .06);
}

.page-contact__topic[open] .page-contact__summary {
  background: rgba(216, 231, 230, .45);
}

.page-contact__summary::after {
  content: "＋";
  font-family: var(--gi-font-mono);
  font-size: 14px;
  color: var(--gi-lake);
}

.page-contact__topic[open] .page-contact__summary::after {
  content: "－";
}

.page-contact__summary-num {
  font-family: var(--gi-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gi-crimson);
}

.page-contact__summary-title {
  font-family: var(--gi-font-display);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--gi-lake-deep);
}

.page-contact__summary-time {
  margin-left: auto;
  font-family: var(--gi-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  white-space: nowrap;
  color: var(--gi-gray);
}

.page-contact__topic-body {
  padding: 16px 4px 22px;
  border-top: 1px solid var(--gi-rule-soft);
}

.page-contact__topic-body p {
  margin: 0 0 10px;
  max-width: 74ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--gi-ink);
}

.page-contact__topic-body p:last-child {
  margin-bottom: 0;
}

.page-contact__band {
  margin-top: clamp(26px, 3.6vw, 44px);
  max-width: 880px;
}

/* ---------- 04 合作洽谈 ---------- */
.page-contact__partner {
  margin-top: clamp(22px, 3.4vw, 36px);
  display: grid;
  gap: clamp(26px, 3.6vw, 42px);
}

.page-contact__subtitle {
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--gi-rule);
  font-family: var(--gi-font-display);
  font-size: 19px;
  font-weight: 600;
  color: var(--gi-lake-deep);
}

.page-contact__checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact__checklist li {
  display: flex;
  gap: 12px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--gi-ink);
}

.page-contact__checklist li::before {
  content: "";
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 6px;
  background: var(--gi-mist);
  border: 1.5px solid var(--gi-lake);
}

.page-contact__aside {
  margin: 20px 0 0;
  padding: 14px 16px;
  background: var(--gi-mist);
  border-left: 3px solid var(--gi-lake);
  font-size: 15px;
  line-height: 1.76;
  color: var(--gi-lake-deep);
}

.page-contact__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact__step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--gi-rule);
}

.page-contact__step:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact__step-num {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--gi-crimson);
  border-radius: 50%;
  font-family: var(--gi-font-mono);
  font-size: 13px;
  color: var(--gi-crimson);
}

.page-contact__step-title {
  margin: 0 0 4px;
  font-family: var(--gi-font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--gi-ink);
}

.page-contact__step-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--gi-gray);
}

/* ---------- 05 服务时段与登记信息 ---------- */
.page-contact__stub {
  position: relative;
  margin-top: clamp(22px, 3.4vw, 34px);
  padding: clamp(22px, 3vw, 34px);
  background: var(--gi-paper);
  border: 1px solid var(--gi-lake-deep);
}

.page-contact__stub::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(11, 59, 69, .3);
  pointer-events: none;
}

.page-contact__stub-list {
  position: relative;
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-contact__stub-row {
  display: grid;
  gap: 3px;
}

.page-contact__stub-row dt {
  font-family: var(--gi-font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gi-gray);
}

.page-contact__stub-row dd {
  margin: 0;
  font-family: var(--gi-font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--gi-lake-deep);
  overflow-wrap: anywhere;
}

.page-contact__cta {
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--gi-rule);
  display: grid;
  gap: 18px;
}

.page-contact__cta-text {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--gi-ink);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-contact__strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact__register {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }

  .page-contact__partner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 820px) {
  .page-contact__stub-row {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

  .page-contact__cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

@media (max-width: 560px) {
  .page-contact__summary {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 4px 12px;
    align-items: baseline;
  }

  .page-contact__summary-num {
    grid-column: 1;
    grid-row: 1;
  }

  .page-contact__summary-title {
    grid-column: 2;
    grid-row: 1;
    font-size: 17.5px;
  }

  .page-contact__summary-time {
    grid-column: 2;
    grid-row: 2;
    margin-left: 0;
  }

  .page-contact__summary::after {
    grid-column: 1;
    grid-row: 2;
    justify-self: start;
  }

  .page-contact__card {
    padding: 18px 16px;
  }

  .page-contact__stub {
    padding: 20px 16px;
  }
}