.page-contact {
  --pc-panel: rgba(16, 36, 59, 0.78);
  --pc-line: rgba(159, 179, 200, 0.18);
  --pc-line-strong: rgba(232, 174, 71, 0.3);
  position: relative;
  overflow-x: clip;
  padding-bottom: 56px;
  color: var(--paper);
  background:
    radial-gradient(110% 55% at 88% -6%, rgba(57, 230, 214, 0.1), transparent 62%),
    radial-gradient(90% 45% at 4% 2%, rgba(232, 174, 71, 0.1), transparent 60%),
    var(--ink);
}

.page-contact .contact-shell {
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 18px;
}

/* 面包屑 */
.page-contact .contact-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 22px 0 14px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-contact .contact-crumb__link {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

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

.page-contact .contact-crumb__sep {
  opacity: 0.55;
}

.page-contact .contact-crumb__current {
  color: var(--paper);
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 30px 20px 26px;
  border: 1px solid var(--pc-line-strong);
  border-radius: var(--radius-l);
  background: linear-gradient(150deg, rgba(16, 36, 59, 0.95), rgba(8, 20, 38, 0.9));
}

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

.page-contact .contact-hero__art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    175deg,
    rgba(8, 20, 38, 0.5) 0%,
    rgba(8, 20, 38, 0.86) 55%,
    rgba(8, 20, 38, 0.97) 100%
  );
}

.page-contact .contact-hero__body {
  position: relative;
  z-index: 2;
}

.page-contact .contact-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .contact-hero__title {
  margin: 0 0 16px;
  max-width: 14ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 10vw, 76px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 235, 221, 0.86);
}

/* 章节导航 */
.page-contact .contact-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.page-contact .contact-toc .chapter-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--pc-line);
  border-radius: 999px;
  background: rgba(8, 20, 38, 0.5);
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease),
    background 0.22s var(--ease);
}

.page-contact .contact-toc .chapter-link .mono {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--amber);
  transition: color 0.22s var(--ease);
}

.page-contact .contact-toc .chapter-link:hover,
.page-contact .contact-toc .chapter-link:focus-visible {
  color: var(--paper);
  border-color: var(--pc-line-strong);
}

.page-contact .contact-toc .chapter-link.is-active {
  background: var(--amber);
  border-color: var(--amber-soft);
  color: var(--ink);
  font-weight: 700;
}

.page-contact .contact-toc .chapter-link.is-active .mono {
  color: var(--ink);
}

/* 章节通用 */
.page-contact .contact-block {
  padding: 52px 0 10px;
  scroll-margin-top: 80px;
}

.page-contact .contact-head {
  display: grid;
  gap: 8px;
}

.page-contact .contact-head__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.28em;
  color: var(--cyan);
}

.page-contact .contact-head .section-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 6vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .contact-head .section-head__note {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .inline-link {
  color: var(--amber-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 联系渠道面板 */
.page-contact .desk-grid {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-contact .desk-panel {
  position: relative;
  overflow: hidden;
  padding: 22px 20px 24px;
  border: 1px solid var(--pc-line);
  border-radius: var(--radius-m);
  background: linear-gradient(160deg, rgba(16, 36, 59, 0.9), rgba(8, 20, 38, 0.86));
}

.page-contact .desk-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  border-radius: 2px;
  background: var(--mist);
  opacity: 0.45;
}

.page-contact .desk-panel--amber {
  border-color: var(--pc-line-strong);
  background:
    radial-gradient(130% 90% at 108% -8%, rgba(232, 174, 71, 0.16), transparent 58%),
    linear-gradient(160deg, rgba(16, 36, 59, 0.92), rgba(8, 20, 38, 0.88));
}

.page-contact .desk-panel--amber::before {
  background: linear-gradient(180deg, var(--amber-soft), var(--amber));
  opacity: 1;
}

.page-contact .desk-panel--cyan::before {
  background: linear-gradient(180deg, var(--cyan), var(--teal));
  opacity: 1;
}

.page-contact .desk-panel__code {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .desk-panel--amber .desk-panel__code {
  color: var(--amber);
}

.page-contact .desk-panel--cyan .desk-panel__code {
  color: var(--cyan);
}

.page-contact .desk-panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}

.page-contact .desk-panel__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(244, 235, 221, 0.82);
}

.page-contact .desk-value {
  display: block;
  margin: 16px 0 0;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--white);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px dashed rgba(159, 179, 200, 0.35);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .desk-value:hover,
.page-contact .desk-value:focus-visible {
  color: var(--amber-soft);
  border-color: var(--amber);
}

.page-contact .desk-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.page-contact .desk-copy {
  appearance: none;
  padding: 8px 15px;
  border: 1px solid rgba(159, 179, 200, 0.35);
  border-radius: 999px;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 12.5px;
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease),
    background 0.2s var(--ease);
}

.page-contact .desk-copy:hover,
.page-contact .desk-copy:focus-visible {
  border-color: var(--amber);
  color: var(--amber-soft);
}

.page-contact .desk-status {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* 按钮 */
.page-contact .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.22s var(--ease), color 0.22s var(--ease),
    border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-contact .btn--primary {
  background: linear-gradient(120deg, var(--amber-soft), var(--amber));
  border-color: var(--amber-soft);
  color: var(--ink);
}

.page-contact .btn--primary:hover,
.page-contact .btn--primary:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 10px 26px -14px rgba(232, 174, 71, 0.9);
}

.page-contact .btn--ghost {
  border-color: var(--pc-line);
  background: rgba(16, 36, 59, 0.6);
  color: var(--paper);
}

.page-contact .btn--ghost:hover,
.page-contact .btn--ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-contact .btn--quiet {
  background: transparent;
  color: var(--mist);
}

.page-contact .btn--quiet:hover,
.page-contact .btn--quiet:focus-visible {
  color: var(--amber-soft);
}

/* 服务时间 */
.page-contact .hours-grid {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-contact .hours-panel {
  position: relative;
  padding: 22px 20px;
  border: 1px solid var(--pc-line);
  border-radius: var(--radius-m);
  background: rgba(16, 36, 59, 0.6);
}

.page-contact .hours-panel--lead {
  border-color: var(--pc-line-strong);
  background:
    linear-gradient(150deg, rgba(232, 174, 71, 0.1), rgba(16, 36, 59, 0.72) 46%, rgba(8, 20, 38, 0.9));
}

.page-contact .hours-panel--lead::after {
  content: "";
  position: absolute;
  top: 18px;
  right: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(57, 230, 214, 0.55);
  animation: pc-pulse 2.8s var(--ease) infinite;
}

.page-contact .hours-panel__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .hours-panel--lead .hours-panel__label {
  color: var(--amber);
}

.page-contact .hours-panel__big {
  margin: 10px 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(28px, 8vw, 52px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-contact .hours-panel__num {
  margin: 12px 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(28px, 7vw, 42px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-contact .hours-panel__num span {
  margin-left: 6px;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .hours-panel__text {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.75;
  color: rgba(244, 235, 221, 0.78);
}

@keyframes pc-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(57, 230, 214, 0.5);
  }
  70% {
    box-shadow: 0 0 0 12px rgba(57, 230, 214, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(57, 230, 214, 0);
  }
}

/* 技术问题清单 */
.page-contact .tech-paper {
  margin-top: 26px;
  padding: 26px 20px 24px;
  border: 1px solid rgba(8, 20, 38, 0.12);
  border-radius: var(--radius-l);
  color: var(--ink);
  background:
    radial-gradient(90% 60% at 96% 2%, rgba(232, 174, 71, 0.18), transparent 60%),
    linear-gradient(155deg, #fbf5ea, var(--paper) 62%);
}

.page-contact .prep-list {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 12px;
  padding: 15px 14px;
  border: 1px solid rgba(8, 20, 38, 0.08);
  border-radius: var(--radius-s);
  background: rgba(255, 255, 255, 0.55);
}

.page-contact .prep-item__num {
  padding-top: 1px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.page-contact .prep-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .prep-item__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(8, 20, 38, 0.72);
}

.page-contact .prep-more {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(8, 20, 38, 0.14);
}

.page-contact .prep-more > summary {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
}

.page-contact .prep-more > summary::-webkit-details-marker {
  display: none;
}

.page-contact .prep-more > summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--teal);
}

.page-contact .prep-more[open] > summary::before {
  content: "–";
}

.page-contact .prep-more p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(8, 20, 38, 0.75);
}

.page-contact .tech-note {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: rgba(8, 122, 117, 0.09);
  font-size: 13.5px;
  line-height: 1.78;
  color: rgba(8, 20, 38, 0.8);
}

.page-contact .tech-paper a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 区域与备案 */
.page-contact .region-grid {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.page-contact .region-card {
  padding: 24px 20px;
  border: 1px solid var(--pc-line);
  border-radius: var(--radius-m);
  background: rgba(16, 36, 59, 0.6);
}

.page-contact .region-card__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .region-card__value {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 4.6vw, 25px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-contact .region-meta {
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--pc-line);
}

.page-contact .region-meta__row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(159, 179, 200, 0.1);
}

.page-contact .region-meta__row dt {
  font-size: 13px;
  color: var(--mist);
}

.page-contact .region-meta__row dd {
  margin: 0;
  font-size: 13.5px;
  text-align: right;
  color: var(--paper);
}

.page-contact .region-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--pc-line);
  border-radius: var(--radius-m);
  background: rgba(16, 36, 59, 0.6);
}

.page-contact .region-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-contact .region-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--pc-line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

/* 合作沟通 */
.page-contact .partner-panel {
  margin-top: 26px;
  padding: 26px 20px;
  border: 1px solid var(--pc-line-strong);
  border-radius: var(--radius-l);
  background:
    radial-gradient(110% 80% at 0% 0%, rgba(57, 230, 214, 0.1), transparent 55%),
    linear-gradient(150deg, rgba(16, 36, 59, 0.92), rgba(8, 20, 38, 0.9));
}

.page-contact .partner-panel__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .partner-panel__subject {
  margin: 8px 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 4.2vw, 21px);
  letter-spacing: 0.02em;
  color: var(--amber);
  word-break: break-word;
}

.page-contact .partner-panel__text {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 235, 221, 0.85);
}

.page-contact .partner-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* 收束 */
.page-contact .contact-close {
  margin-top: 52px;
  padding-top: 22px;
  border-top: 1px solid var(--pc-line);
}

.page-contact .contact-close__code {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-close__text {
  margin: 0;
  max-width: 66ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(244, 235, 221, 0.7);
}

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

  .page-contact .contact-hero {
    padding: 38px 30px 32px;
  }

  .page-contact .desk-panel,
  .page-contact .hours-panel,
  .page-contact .region-card,
  .page-contact .partner-panel {
    padding: 24px 24px;
  }

  .page-contact .tech-paper {
    padding: 30px 28px 28px;
  }

  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 16px;
  }
}

@media (min-width: 880px) {
  .page-contact .contact-head {
    grid-template-columns: 86px minmax(0, 1fr);
    column-gap: 24px;
    row-gap: 10px;
    align-items: start;
  }

  .page-contact .contact-head__num {
    grid-column: 1;
    grid-row: 1 / span 2;
    padding-top: 0.55em;
  }

  .page-contact .contact-head > .section-head__title {
    grid-column: 2;
    grid-row: 1;
  }

  .page-contact .contact-head > .section-head__note {
    grid-column: 2;
    grid-row: 2;
  }

  .page-contact .desk-grid {
    grid-template-columns: 1.18fr 0.86fr 0.96fr;
    gap: 18px;
    align-items: start;
  }

  .page-contact .desk-grid > :nth-child(2) {
    margin-top: 42px;
  }

  .page-contact .desk-grid > :nth-child(3) {
    margin-top: 16px;
  }

  .page-contact .hours-grid {
    grid-template-columns: 1.25fr 0.85fr 0.9fr;
    gap: 18px;
    align-items: stretch;
  }

  .page-contact .region-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 24px;
    align-items: start;
  }

  .page-contact .partner-panel {
    padding: 32px 34px;
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero {
    padding: 46px 44px 40px;
  }

  .page-contact .contact-hero__lead {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .hours-panel--lead::after {
    animation: none;
  }

  .page-contact .btn,
  .page-contact .desk-copy,
  .page-contact .chapter-link,
  .page-contact .desk-value {
    transition-duration: 0.001ms;
  }
}