.page-contact {
  --pc-notch: 22px;
  --pc-panel-soft: rgba(18, 37, 61, .72);
  --pc-line-soft: rgba(36, 64, 92, .85);
  position: relative;
  background: var(--c-night);
  color: var(--c-text);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(96px, 14vw, 132px) 0 clamp(36px, 6vw, 56px);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(158deg, var(--c-panel) 0%, rgba(18, 37, 61, .42) 44%, var(--c-night) 78%);
  clip-path: polygon(0 0, 100% 0, 100% 58%, 0 100%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(46, 155, 181, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 155, 181, .09) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 76%);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.page-contact .contact-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(28px, 4.6vw, 44px);
  line-height: 1.24;
  letter-spacing: .005em;
}

.page-contact .contact-hero__lead {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-contact .contact-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero__chips li {
  padding: 6px 13px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(27, 53, 82, .58);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--c-green-soft);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .contact-hero__frame {
  background: var(--c-panel);
  clip-path: polygon(0 6%, 100% 0, 95% 100%, 5% 94%);
}

/* ---------- 联系方式 ---------- */

.page-contact .contact-ways__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 32px;
  align-items: start;
}

.page-contact .contact-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 24px 28px;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pc-notch)), calc(100% - var(--pc-notch)) 100%, 0 100%);
  transition: transform .16s var(--ease), background-color .16s var(--ease), border-color .16s var(--ease);
}

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-within {
  transform: translateY(-6px);
  background: var(--c-raise);
  border-color: rgba(116, 214, 168, .42);
}

.page-contact .contact-card--phone {
  border-color: rgba(255, 138, 61, .38);
  background: linear-gradient(180deg, rgba(255, 138, 61, .13) 0%, rgba(18, 37, 61, .97) 60%);
}

.page-contact .contact-card--phone:hover,
.page-contact .contact-card--phone:focus-within {
  border-color: rgba(255, 138, 61, .62);
  background: linear-gradient(180deg, rgba(255, 138, 61, .18) 0%, var(--c-raise) 62%);
}

.page-contact .contact-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--step-4);
  font-weight: 600;
  line-height: 1.4;
}

.page-contact .contact-card__value {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: .01em;
  color: var(--c-text);
  text-decoration: none;
  word-break: break-all;
  padding-bottom: 3px;
  border-bottom: 1px dashed rgba(155, 176, 196, .45);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-contact .contact-card--phone .contact-card__value {
  font-size: 22px;
  color: var(--c-orange);
}

.page-contact .contact-card__value:hover,
.page-contact .contact-card__value:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange-deep);
}

.page-contact .contact-card--phone .contact-card__value:hover,
.page-contact .contact-card--phone .contact-card__value:focus-visible {
  color: var(--c-text);
  border-bottom-color: var(--c-orange);
}

.page-contact .contact-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-muted);
}

.page-contact .contact-card__addr {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text);
}

.page-contact .contact-card__mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--c-muted);
}

.page-contact .contact-ways__figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-contact .contact-ways__figure .frame {
  background: var(--c-panel);
  clip-path: polygon(0 0, 100% 5%, 96% 100%, 0 95%);
}

.page-contact .contact-ways__figure .frame__caption {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 四类问题 ---------- */

.page-contact .topics-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 30px;
}

.page-contact .topic {
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-panel);
  overflow: hidden;
  transition: border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-contact .topic[open] {
  border-color: rgba(63, 178, 127, .5);
  background: var(--c-raise);
}

.page-contact .topic__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
  transition: background-color .16s var(--ease);
}

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

.page-contact .topic__head:hover {
  background: rgba(46, 155, 181, .08);
}

.page-contact .topic__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-green);
}

.page-contact .topic__name {
  font-family: var(--font-head);
  font-size: var(--step-4);
  font-weight: 600;
  color: var(--c-text);
}

.page-contact .topic__toggle {
  position: relative;
  width: 18px;
  height: 18px;
  flex: none;
}

.page-contact .topic__toggle::before,
.page-contact .topic__toggle::after {
  content: "";
  position: absolute;
  background: var(--c-cyan-soft);
  border-radius: 2px;
  transition: transform .2s var(--ease), background-color .2s var(--ease);
}

.page-contact .topic__toggle::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-contact .topic__toggle::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

.page-contact .topic[open] .topic__toggle::after {
  transform: scaleY(0);
}

.page-contact .topic[open] .topic__toggle::before {
  background: var(--c-green);
}

.page-contact .topic__body {
  padding: 18px 22px 22px;
  border-top: 1px solid var(--c-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-contact .topic__body p {
  margin: 0 0 12px;
}

.page-contact .topic__list {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .topic__list li {
  position: relative;
  padding-left: 18px;
}

.page-contact .topic__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-cyan);
}

.page-contact .topic__link {
  display: inline-block;
  font-size: 14px;
  color: var(--c-green-soft);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(116, 214, 168, .4);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-contact .topic__link:hover,
.page-contact .topic__link:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange-deep);
}

/* ---------- 响应时段 ---------- */

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

.page-contact .contact-hours__title {
  margin: 12px 0 16px;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 700;
  line-height: 1.3;
}

.page-contact .contact-hours__copy p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--c-muted);
}

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

.page-contact .contact-hours__bars {
  padding: 22px 22px 20px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-contact .hourbar {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px 14px;
  padding: 15px 0;
  border-bottom: 1px dashed var(--pc-line-soft);
}

.page-contact .hourbar__label {
  font-size: 14px;
  color: var(--c-muted);
}

.page-contact .hourbar__value {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--c-text);
}

.page-contact .hourbar__track {
  grid-column: 1 / -1;
  display: block;
  height: 8px;
  border-radius: 999px;
  background: rgba(36, 64, 92, .9);
  overflow: hidden;
}

.page-contact .hourbar__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
}

.page-contact .hourbar__fill--weekday {
  width: 82%;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-green));
}

.page-contact .hourbar__fill--weekend {
  width: 66%;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-green-soft));
}

.page-contact .hourbar__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-muted);
}

/* ---------- 邮件清单 ---------- */

.page-contact .mail-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .mail-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-s);
  background: var(--pc-panel-soft);
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text);
  cursor: pointer;
  transition: border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-contact .mail-item:hover {
  border-color: rgba(63, 178, 127, .5);
  background: rgba(27, 53, 82, .85);
}

.page-contact .mail-item__box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  border: 1px solid var(--c-muted);
  border-radius: 5px;
  background: transparent;
  cursor: pointer;
  transition: background-color .16s var(--ease), border-color .16s var(--ease);
}

.page-contact .mail-item__box:checked {
  background: var(--c-green);
  border-color: var(--c-green);
}

.page-contact .mail-item__box:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: solid var(--c-night);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .contact-checklist__foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-contact .inline-link {
  color: var(--c-green-soft);
  text-decoration: none;
  border-bottom: 1px dashed rgba(116, 214, 168, .5);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-contact .inline-link:hover,
.page-contact .inline-link:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange-deep);
}

.page-contact .contact-checklist__aside {
  align-self: start;
  margin-top: 30px;
  padding: 22px 22px 24px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-cyan);
  border-radius: var(--radius-s);
  background: rgba(18, 37, 61, .6);
}

.page-contact .contact-checklist__aside h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: var(--step-4);
  font-weight: 600;
}

.page-contact .contact-checklist__aside p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

/* ---------- 合作建议 ---------- */

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 30px;
}

.page-contact .coop-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 22px 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, var(--c-panel), rgba(10, 26, 47, .92));
  transition: transform .16s var(--ease), border-color .16s var(--ease);
}

.page-contact .coop-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 22px;
  width: 42px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--c-cyan);
}

.page-contact .coop-card:nth-child(2)::before {
  background: var(--c-green);
}

.page-contact .coop-card:nth-child(3)::before {
  background: var(--c-orange);
}

.page-contact .coop-card:hover,
.page-contact .coop-card:focus-within {
  transform: translateY(-6px);
  border-color: rgba(46, 155, 181, .5);
}

.page-contact .coop-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--step-4);
  font-weight: 600;
  line-height: 1.4;
}

.page-contact .coop-card > p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--c-muted);
}

.page-contact .coop-card__meta {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--pc-line-soft);
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-cyan-soft);
}

/* ---------- 处理时长 ---------- */

.page-contact .duration-list {
  position: relative;
  list-style: none;
  margin: 32px 0 0;
  padding: 0 0 0 30px;
  max-width: 58rem;
}

.page-contact .duration-list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 18px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-cyan), rgba(63, 178, 127, .3));
}

.page-contact .duration-item {
  position: relative;
  padding: 0 0 28px;
}

.page-contact .duration-item:last-child {
  padding-bottom: 0;
}

.page-contact .duration-item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-night);
  border: 3px solid var(--c-green);
}

.page-contact .duration-item:last-child::before {
  border-color: var(--c-orange);
}

.page-contact .duration-item__label {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--step-4);
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-text);
}

.page-contact .duration-item__value {
  margin: 6px 0 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--c-orange);
}

.page-contact .duration-item__text {
  margin: 0;
  max-width: 46em;
  font-size: 14px;
  line-height: 1.82;
  color: var(--c-muted);
}

/* ---------- 收尾 ---------- */

.page-contact .contact-closing__inner {
  display: grid;
  gap: 24px;
  padding: 34px 26px 38px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-l);
  background: linear-gradient(135deg, rgba(46, 155, 181, .16), rgba(18, 37, 61, .94) 56%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-contact .contact-closing h2 {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  line-height: 1.35;
}

.page-contact .contact-closing p {
  margin: 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.82;
  color: var(--c-muted);
}

.page-contact .contact-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 焦点反馈 ---------- */

.page-contact a:focus-visible,
.page-contact summary:focus-visible,
.page-contact input:focus-visible {
  outline: 2px solid var(--c-green);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-contact .contact-ways__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 800px) {
  .page-contact .topics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 820px) {
  .page-contact .contact-closing__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
    padding: 42px 40px 44px;
  }
}

@media (min-width: 860px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: center;
  }

  .page-contact .contact-hours__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 52px;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-checklist__aside {
    margin-top: 0;
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-ways__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }

  .page-contact .contact-ways__grid > *:nth-child(2) {
    margin-top: 26px;
  }

  .page-contact .contact-ways__grid > *:nth-child(4) {
    margin-top: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .coop-card,
  .page-contact .topic__toggle::before,
  .page-contact .topic__toggle::after,
  .page-contact .contact-card__value,
  .page-contact .topic__link {
    transition: none;
  }

  .page-contact .contact-card:hover,
  .page-contact .coop-card:hover {
    transform: none;
  }
}