/* ====== 联系我们 · page-contact ====== */
.page-contact {
  --contact-gap: 26px;
}

/* ---------- 页头 ---------- */
.page-contact .contact-head {
  padding-top: 26px;
}

.page-contact .breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-contact .breadcrumbs-list li {
  display: flex;
  align-items: center;
}

.page-contact .breadcrumbs-list li + li::before {
  content: "/";
  margin: 0 9px;
  color: var(--line);
}

.page-contact .breadcrumbs-list a {
  color: var(--ink-3);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s ease, color .18s ease;
}

.page-contact .breadcrumbs-list a:hover {
  border-bottom-color: var(--green);
  color: var(--ink);
}

.page-contact .contact-head .eyebrow {
  margin-top: 22px;
}

.page-contact .contact-head .display-title {
  margin: 12px 0 0;
  max-width: 19ch;
}

.page-contact .contact-head .lede {
  margin: 18px 0 0;
  max-width: 66ch;
}

/* ---------- 双栏骨架 ---------- */
.page-contact .contact-body {
  padding-top: 34px;
}

.page-contact .contact-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
}

.page-contact .contact-rail {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-content: start;
  min-width: 0;
}

/* ---------- 联系卡 ---------- */
.page-contact .contact-card {
  position: relative;
  padding: 24px 20px 22px;
  border-radius: var(--radius-lg);
  color: var(--paper);
  background:
    radial-gradient(120% 88% at 100% 0%, rgba(0, 196, 140, .22), rgba(0, 196, 140, 0) 62%),
    linear-gradient(158deg, #0B1F3A 0%, #16345C 100%);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  right: -56px;
  bottom: -72px;
  width: 184px;
  height: 184px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 176, 32, .26), rgba(255, 176, 32, 0) 70%);
  pointer-events: none;
}

.page-contact .contact-card-label {
  position: relative;
  z-index: 1;
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--amber);
}

.page-contact .contact-list {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 15px 0;
  border-bottom: 1px solid rgba(233, 238, 245, .14);
}

.page-contact .contact-item:first-child {
  padding-top: 8px;
}

.page-contact .contact-item:last-child {
  padding-bottom: 6px;
  border-bottom: 0;
}

.page-contact .contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: rgba(233, 238, 245, .1);
  color: var(--green);
}

.page-contact .contact-icon svg {
  display: block;
}

.page-contact .contact-item-body {
  min-width: 0;
}

.page-contact .contact-key {
  display: block;
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(233, 238, 245, .72);
}

.page-contact .contact-value {
  display: block;
  margin-top: 4px;
  font-size: 15px;
  line-height: 1.55;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-value.mono {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: .01em;
}

.page-contact .contact-sub {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(233, 238, 245, .62);
}

.page-contact .contact-card .copy-btn {
  margin-top: 10px;
  padding: 5px 13px;
  border: 1px solid rgba(233, 238, 245, .3);
  border-radius: var(--pill);
  background: rgba(233, 238, 245, .06);
  color: var(--silver);
  font-family: var(--font-sans);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: .04em;
  cursor: pointer;
  transition: background-color .16s ease, border-color .16s ease, color .16s ease;
}

.page-contact .contact-card .copy-btn:hover {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}

.page-contact .contact-card .copy-btn.is-copied {
  background: var(--green);
  border-color: var(--green);
  color: var(--ink);
}

/* ---------- 服务时段 ---------- */
.page-contact .contact-hours {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  margin-top: 16px;
  padding-top: 18px;
  border-top: 1px solid rgba(233, 238, 245, .16);
}

.page-contact .hours-ring {
  position: relative;
  width: 62px;
  height: 62px;
}

.page-contact .hours-ring svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-contact .hours-ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--green);
}

/* ---------- 联系卡下方配图 ---------- */
.page-contact .contact-visual {
  margin: 0;
  padding: 0;
  aspect-ratio: 5 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(140deg, var(--ink), var(--ink-3));
}

.page-contact .contact-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 右侧内容 ---------- */
.page-contact .contact-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 46px;
  min-width: 0;
}

.page-contact .contact-block {
  min-width: 0;
}

.page-contact .section-title {
  margin: 8px 0 0;
}

.page-contact .section-head {
  margin-bottom: 20px;
}

/* ---------- 来信事由 ---------- */
.page-contact .letter-list {
  border-top: 1px solid var(--line);
}

.page-contact .letter-item {
  border-bottom: 1px solid var(--line);
}

.page-contact .letter-item > summary {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 18px;
  align-items: center;
  gap: 11px;
  padding: 17px 2px;
  cursor: pointer;
  list-style: none;
}

.page-contact .letter-item > summary::-webkit-details-marker {
  display: none;
}

.page-contact .letter-item > summary::marker {
  content: "";
}

.page-contact .letter-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 22px;
  border-radius: var(--pill);
  background: var(--amber);
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
}

.page-contact .letter-name {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  transition: color .16s ease;
}

.page-contact .letter-item > summary:hover .letter-name {
  color: var(--ink-3);
}

.page-contact .letter-mark {
  position: relative;
  justify-self: end;
  width: 16px;
  height: 16px;
}

.page-contact .letter-mark::before,
.page-contact .letter-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  border-radius: 2px;
  background: var(--muted);
  transform: translate(-50%, -50%);
  transition: transform .18s ease, background-color .18s ease;
}

.page-contact .letter-mark::before {
  width: 14px;
  height: 2px;
}

.page-contact .letter-mark::after {
  width: 2px;
  height: 14px;
}

.page-contact .letter-item[open] .letter-mark::before {
  background: var(--green);
}

.page-contact .letter-item[open] .letter-mark::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-contact .letter-body {
  padding: 0 8px 20px 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .letter-body p {
  margin: 0;
}

.page-contact .letter-body a,
.page-contact .reply-prose a {
  color: var(--ink-3);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color .18s ease, color .18s ease;
}

.page-contact .letter-body a:hover,
.page-contact .reply-prose a:hover {
  color: var(--ink);
  border-bottom-color: var(--green);
}

/* ---------- 写信格式 ---------- */
.page-contact .compose-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .compose-item {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 18px 18px 16px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--ink-3);
  background: var(--silver);
}

.page-contact .compose-index {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-3);
}

.page-contact .compose-name {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
}

.page-contact .compose-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--muted);
}

/* ---------- 回复节奏 ---------- */
.page-contact .reply-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.page-contact .reply-cell {
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
}

.page-contact .reply-num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-contact .reply-unit {
  margin-left: 6px;
  font-size: 14px;
  color: var(--muted);
}

.page-contact .reply-cell p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .reply-prose {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--muted);
}

/* ---------- 引用与转载 ---------- */
.page-contact .cite-panel {
  padding: 22px 20px 22px 22px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--green);
  background: var(--green-soft);
}

.page-contact .cite-panel p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

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

/* ---------- 城市分隔 ---------- */
.page-contact .contact-city {
  position: relative;
  margin-top: 60px;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
}

.page-contact .city-media {
  position: absolute;
  inset: 0;
}

.page-contact .city-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .38;
}

.page-contact .city-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(118deg, rgba(11, 31, 58, .94) 6%, rgba(11, 31, 58, .6) 60%, rgba(11, 31, 58, .9) 100%);
}

.page-contact .city-copy {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 56px 20px 60px;
}

.page-contact .city-kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .24em;
  color: var(--amber);
}

.page-contact .city-title {
  margin: 0 0 14px;
  max-width: 24ch;
  font-family: var(--font-serif);
  font-size: 25px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .city-copy p {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(233, 238, 245, .84);
}

/* ---------- 站点信息 ---------- */
.page-contact .site-info {
  padding-top: 54px;
  padding-bottom: 8px;
}

.page-contact .site-info-list {
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .site-info-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
}

.page-contact .site-info-row dt {
  font-size: 13px;
  letter-spacing: .08em;
  line-height: 1.9;
  color: var(--muted);
}

.page-contact .site-info-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink);
  min-width: 0;
}

.page-contact .site-info-row dd.site-info-strong {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
}

.page-contact .site-info .prose {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

.page-contact .site-info .btn {
  margin-top: 20px;
}

.page-contact .site-info .ref-code {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .02em;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .letter-body {
    padding: 0 26px 20px 45px;
  }

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

  .page-contact .city-title {
    font-size: 29px;
  }

  .page-contact .site-info-row {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 344px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .contact-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-contact .contact-main {
    gap: 56px;
  }

  .page-contact .contact-city {
    margin-top: 78px;
  }

  .page-contact .city-copy {
    padding: 72px 24px 78px;
  }

  .page-contact .city-title {
    font-size: 33px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}