.page-contact {
  position: relative;
  padding-block-start: calc(var(--header-h) + 18px);
  padding-block-end: clamp(56px, 9vw, 104px);
  background:
    radial-gradient(1000px 520px at 84% -8%, rgba(31, 209, 122, 0.13), transparent 62%),
    radial-gradient(780px 440px at -12% 2%, rgba(18, 63, 90, 0.72), transparent 66%);
}

.page-contact .page-shell {
  padding-inline: var(--gutter);
}

.page-contact .section {
  margin-block-start: clamp(38px, 6vw, 72px);
}

.page-contact .section--tight {
  margin-block-start: clamp(26px, 4vw, 42px);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  padding-block: clamp(22px, 4vw, 46px) clamp(28px, 4.6vw, 52px);
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-hero__title {
  margin: 14px 0 0;
  max-width: 16ch;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(34px, 7.4vw, 70px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ice);
}

.page-contact .ct-hero__title em {
  font-style: normal;
  color: var(--turf);
  text-shadow: 0 0 34px rgba(31, 209, 122, 0.38);
}

.page-contact .ct-hero__lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .ct-hero__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
}

/* ---------- 联系卡片 ---------- */
.page-contact .ct-card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  padding: clamp(22px, 3.6vw, 46px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(152deg, rgba(18, 63, 90, 0.94) 0%, rgba(12, 39, 64, 0.97) 54%, rgba(7, 26, 43, 0.98) 100%);
  box-shadow: 0 30px 74px -48px rgba(0, 0, 0, 0.92);
}

.page-contact .ct-card__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  margin: 0;
}

.page-contact .ct-card__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
}

.page-contact .ct-card__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(118deg, rgba(7, 26, 43, 0.95) 26%, rgba(7, 26, 43, 0.6) 100%);
}

.page-contact .ct-card__left,
.page-contact .ct-card__right {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.page-contact .ct-card__title {
  margin: 8px 0 clamp(12px, 2vw, 20px);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-contact .ct-item {
  padding-block: clamp(14px, 2vw, 18px);
  border-top: 1px solid var(--line);
}

.page-contact .ct-item:first-of-type {
  border-top: 0;
  padding-block-start: 0;
}

.page-contact .ct-item__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .ct-item__val {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 3.9vw, 1.6rem);
  line-height: 1.36;
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
  color: var(--ice);
}

.page-contact .ct-item__val--mail {
  color: var(--turf);
}

.page-contact .ct-item__note {
  margin: 8px 0 0;
  max-width: 48ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 准备清单 ---------- */
.page-contact .ct-prep {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(7, 26, 43, 0.6);
}

.page-contact .ct-prep__title {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 20px);
  color: var(--ice);
}

.page-contact .ct-prep__sub {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .ct-prep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .ct-prep__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding-block-start: 14px;
  border-top: 1px solid var(--line);
}

.page-contact .ct-prep__list li:first-child {
  padding-block-start: 0;
  border-top: 0;
}

.page-contact .ct-prep__num {
  padding-block-start: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--turf);
}

.page-contact .ct-prep__list strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-head);
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ice);
}

.page-contact .ct-prep__list p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 问题分类 ---------- */
.page-contact .ct-faq-grid {
  display: grid;
  gap: 12px;
  margin-block-start: clamp(22px, 3vw, 34px);
}

.page-contact .ct-faq {
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--turf-deep);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(18, 63, 90, 0.56), rgba(12, 39, 64, 0.42));
  transition: border-color 180ms ease, box-shadow 220ms ease;
}

.page-contact .ct-faq[open] {
  border-left-color: var(--turf);
  box-shadow: var(--glow-turf);
}

.page-contact .ct-faq > summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 44px;
  cursor: pointer;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15.5px;
  color: var(--ice);
}

.page-contact .ct-faq > summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-faq > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--turf);
}

.page-contact .ct-faq[open] > summary::after {
  content: "−";
  color: var(--yellow);
}

.page-contact .ct-faq > summary:focus-visible {
  outline: 2px solid var(--turf);
  outline-offset: 4px;
  border-radius: 6px;
}

.page-contact .ct-faq__body {
  margin: 10px 0 2px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 合作与媒体 ---------- */
.page-contact .ct-collab__inner {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  padding-block: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-collab__lede {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--mist);
}

.page-contact .ct-collab__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .ct-collab__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-block-start: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .ct-collab__list li:first-child {
  padding-block-start: 0;
  border-top: 0;
}

/* ---------- 服务时间与信件 ---------- */
.page-contact .ct-hours__grid {
  display: grid;
  gap: clamp(16px, 2.6vw, 28px);
}

.page-contact .ct-hours__card {
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(12, 39, 64, 0.64);
}

.page-contact .ct-hours__card--paper {
  border-color: var(--line-strong);
  background: linear-gradient(160deg, rgba(200, 230, 216, 0.1), rgba(12, 39, 64, 0.52));
}

.page-contact .ct-hours__time {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 5vw, 2.3rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--yellow);
}

.page-contact .ct-hours__addr {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.08rem, 3.4vw, 1.5rem);
  line-height: 1.36;
  color: var(--ice);
}

.page-contact .ct-hours__card p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .ct-city {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--night);
}

.page-contact .ct-city img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  max-width: 100%;
}

.page-contact .ct-city figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 收尾 ---------- */
.page-contact .ct-back__text {
  margin: 0;
  padding: clamp(16px, 2.4vw, 22px);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 行内链接 ---------- */
.page-contact a.ct-link {
  color: var(--turf);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(31, 209, 122, 0.48);
  text-underline-offset: 3px;
}

.page-contact a.ct-link:hover,
.page-contact a.ct-link:focus-visible {
  color: var(--yellow);
  text-decoration-color: currentColor;
}

.page-contact a.ct-link:focus-visible {
  outline: 2px solid var(--turf);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- 断点 ---------- */
@media (min-width: 820px) {
  .page-contact .ct-faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 880px) {
  .page-contact .ct-card {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-contact .ct-collab__inner {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: center;
  }

  .page-contact .ct-hours__grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
  }
}

@media (max-width: 520px) {
  .page-contact .ct-hero__title {
    max-width: none;
  }

  .page-contact .ct-item__val {
    font-size: 1rem;
  }

  .page-contact .ct-faq {
    padding: 12px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-faq {
    transition: none;
  }
}