.page-contact {
  --contact-gap: 48px;
  --contact-line: var(--line);
}

/* ---------- 首屏框景 ---------- */
.page-contact .contact-hero {
  padding-top: 20px;
}

.page-contact .contact-hero__frame {
  position: relative;
  margin-top: 18px;
  padding: 34px 22px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, var(--panel-2) 0%, rgba(11, 59, 52, 0) 58%),
    var(--panel);
  box-shadow: var(--shadow);
}

.page-contact .contact-hero__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-image:
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px),
    linear-gradient(0deg, var(--line-soft) 1px, transparent 1px);
  background-size: 84px 84px;
  opacity: .12;
  pointer-events: none;
}

.page-contact .contact-hero__tick {
  position: absolute;
  width: 14px;
  height: 14px;
  border-style: solid;
  border-color: var(--cyan);
  pointer-events: none;
}
.page-contact .contact-hero__tick--tl { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.page-contact .contact-hero__tick--tr { top: -1px; right: -1px; border-width: 2px 2px 0 0; }
.page-contact .contact-hero__tick--bl { bottom: -1px; left: -1px; border-width: 0 0 2px 2px; }
.page-contact .contact-hero__tick--br { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }

.page-contact .contact-hero__title {
  position: relative;
  margin: 14px 0 0;
  font-size: clamp(26px, 6.2vw, 44px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
  max-width: 22ch;
}

.page-contact .contact-hero__lede {
  position: relative;
  margin-top: 16px;
  max-width: 62ch;
  color: var(--text);
}

.page-contact .contact-hero__lede a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 245, 210, .45);
}
.page-contact .contact-hero__lede a:hover {
  border-bottom-color: var(--cyan);
}

.page-contact .contact-hero__strip {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-hero__strip span {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
}

.page-contact .contact-hero__strip span::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--cyan);
  flex: none;
}
.page-contact .contact-hero__strip span:nth-child(2)::before { background: var(--orange); }
.page-contact .contact-hero__strip span:nth-child(3)::before { background: var(--muted); }

/* ---------- 渠道区 ---------- */
.page-contact .contact-banner {
  margin-bottom: 34px;
}

.page-contact .contact-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-contact .contact-side {
  align-self: start;
}

.page-contact .contact-side__note {
  margin-top: 16px;
  max-width: 30ch;
}
.page-contact .contact-side__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 245, 210, .4);
}

.page-contact .contact-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  min-width: 0;
}

.page-contact .channel {
  position: relative;
  padding: 24px 22px 24px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  min-width: 0;
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: 3px 0 0 3px;
}
.page-contact .channel--mail::before { background: var(--cyan); }
.page-contact .channel--phone::before { background: var(--orange); }

.page-contact .channel__label {
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
  letter-spacing: .06em;
}

.page-contact .channel__title {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(18px, 4.4vw, 23px);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--white);
  word-break: break-word;
}

.page-contact .channel--phone .channel__title { color: var(--orange); }

.page-contact .channel__desc {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .channel__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .channel__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .58em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .channel__note {
  margin: 18px 0 0;
  color: var(--cyan);
  font-size: 12.5px;
  letter-spacing: .06em;
}

/* ---------- 合作方向 ---------- */
.page-contact .contact-coop .coop-tabs {
  margin-top: 26px;
}

.page-contact .coop-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-contact .coop-tabs .tab {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1;
  padding: 9px 17px;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .coop-tabs .tab:hover {
  color: var(--text);
  border-color: var(--cyan);
}

.page-contact .coop-tabs .tab[aria-selected="true"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 600;
}

.page-contact .coop-tabs .tabpanel {
  margin-top: 20px;
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.page-contact .coop-tabs .tabpanel h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .coop-tabs .tabpanel p {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
  max-width: 64ch;
}

.page-contact .coop-materials {
  list-style: none;
  margin: 20px 0 0;
  padding: 18px 0 0;
  border-top: 1px dashed var(--line-soft);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px 24px;
}

.page-contact .coop-materials li {
  display: flex;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .coop-materials li::before {
  content: "—";
  font-family: var(--font-mono);
  color: var(--cyan);
  flex: none;
}

/* ---------- 地址 ---------- */
.page-contact .contact-addr {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: center;
}

.page-contact .contact-addr__info h2 {
  margin: 12px 0 0;
  font-size: clamp(22px, 4.6vw, 32px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .contact-addr__line {
  margin: 20px 0 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--white);
  font-size: 15px;
  letter-spacing: .06em;
}

.page-contact .contact-addr__desc {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
  max-width: 52ch;
}

.page-contact .contact-addr__info .note {
  margin-top: 14px;
}
.page-contact .contact-addr__info .note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 245, 210, .4);
}

.page-contact .contact-addr__figure {
  margin: 0;
  min-width: 0;
}

/* ---------- 处理时效 ---------- */
.page-contact .sla-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .sla-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .sla-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 18px;
}

.page-contact .sla-item__name {
  font-size: 17px;
  font-weight: 600;
  color: var(--white);
}

.page-contact .sla-item__time {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-contact .sla-bar {
  position: relative;
  height: 3px;
  margin-top: 14px;
  border-radius: 2px;
  background: rgba(31, 74, 65, .55);
  overflow: hidden;
}

.page-contact .sla-fill {
  display: block;
  height: 100%;
  width: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 820ms var(--ease);
}

.page-contact .sla-item.is-visible .sla-fill {
  transform: scaleX(1);
}

.page-contact .sla-item:nth-child(1) .sla-fill { transition-delay: 60ms; }
.page-contact .sla-item:nth-child(2) .sla-fill { transition-delay: 200ms; }
.page-contact .sla-item:nth-child(3) .sla-fill { transition-delay: 340ms; }
.page-contact .sla-item:nth-child(4) .sla-fill { transition-delay: 480ms; }

.page-contact .sla-item__note {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 60ch;
}

/* ---------- 备案收束 ---------- */
.page-contact .regist-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.page-contact .regist-panel__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-contact .regist-panel__value {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-contact .regist-panel__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
  max-width: 70ch;
}

.page-contact .regist-panel__text .note {
  margin-top: 12px;
}
.page-contact .regist-panel__text .note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 245, 210, .4);
}

/* ---------- 触控与响应式 ---------- */
.page-contact .channel,
.page-contact .tabpanel,
.page-contact .regist-panel,
.page-contact .coop-tabs .tab,
.page-contact .contact-hero__lede a,
.page-contact .contact-side__note a,
.page-contact .regist-panel__text .note a {
  outline-offset: 2px;
}

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

.page-contact img {
  max-width: 100%;
  height: auto;
}

@media (min-width: 640px) {
  .page-contact .contact-hero__frame {
    padding: 44px 36px 36px;
  }

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

  .page-contact .regist-panel {
    padding: 26px 28px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-split {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 40px;
  }

  .page-contact .contact-side {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-contact .contact-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }

  .page-contact .contact-addr {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 44px;
  }

  .page-contact .regist-panel {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.5fr);
    gap: 34px;
    align-items: center;
  }
}

@media (min-width: 1160px) {
  .page-contact .contact-hero__frame {
    padding: 52px 48px 40px;
  }

  .page-contact .contact-cards {
    gap: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .sla-fill {
    transition: none;
    transform: scaleX(1);
  }

  .page-contact .coop-tabs .tab {
    transition: none;
  }
}