.page-contact {
  padding-bottom: 12px;
}

.page-contact .sr-only {
  position: absolute;
  width: 1px;
  height: 1px
  ;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  margin: 20px 0 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.page-contact .crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .crumbs a:hover {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.page-contact .crumbs__sep {
  color: var(--rule);
}

.page-contact .crumbs [aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  display: grid;
  gap: 26px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--rule);
}

.page-contact .ct-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-contact .ct-hero__kicker::before {
  content: "";
  width: 22px;
  height: 3px;
  background: var(--accent);
  flex: none;
}

.page-contact .ct-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 6.6vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--ink);
  text-wrap: balance;
}

.page-contact .ct-hero__lead {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink);
}

.page-contact .ct-hero__tags {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ct-hero__figure {
  margin: 0;
  border: 1px solid var(--rule);
  background: var(--paper-2);
  padding: 10px;
  box-shadow: 0 6px 12px rgba(30, 26, 22, 0.1);
}

.page-contact .ct-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 10 / 13;
  object-fit: cover;
  filter: saturate(0.96);
}

/* ---------- 通道标签 ---------- */
.page-contact .ct-tabs {
  margin: 26px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ct-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--rule);
  border-bottom: 3px solid var(--rule);
  background: var(--paper-2);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease),
    background 0.25s var(--ease);
}

.page-contact .ct-tab__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}

.page-contact .ct-tab:hover {
  transform: translateY(-2px);
  border-color: var(--ink);
  background: var(--paper);
}

.page-contact .ct-tab--errata { border-bottom-color: var(--winter); }
.page-contact .ct-tab--partner { border-bottom-color: var(--spring); }
.page-contact .ct-tab--media { border-bottom-color: var(--autumn); }

.page-contact .ct-tab--jump {
  border-style: dashed;
  border-bottom-color: var(--accent);
  font-weight: 500;
  color: var(--muted);
}

.page-contact:has(#channel-errata:target) .ct-tab--errata,
.page-contact:has(#channel-partner:target) .ct-tab--partner,
.page-contact:has(#channel-media:target) .ct-tab--media,
.page-contact:has(#contact-cards:target) .ct-tab--jump {
  background: var(--paper);
  border-color: var(--ink);
  transform: translateY(-2px);
}

/* ---------- 章节通用 ---------- */
.page-contact .section {
  margin-top: 52px;
}

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

.page-contact .section [id] {
  scroll-margin-top: calc(var(--bar-h) + 20px);
}

/* ---------- 01 三通道 ---------- */
.page-contact .ct-channels {
  display: grid;
  gap: 16px;
}

.page-contact .ct-card {
  position: relative;
  padding: 20px 18px 8px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 4px solid var(--winter);
  box-shadow: 0 6px 12px rgba(30, 26, 22, 0.08);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
    outline-color 0.3s var(--ease);
  outline: 2px solid transparent;
  outline-offset: 3px;
}

.page-contact .ct-card--partner { border-top-color: var(--spring); }
.page-contact .ct-card--media { border-top-color: var(--autumn); }

.page-contact .ct-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 18px rgba(30, 26, 22, 0.12);
}

.page-contact .ct-card:target {
  outline-color: var(--accent);
}

.page-contact .ct-card__kicker {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-contact .ct-card__title {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .ct-card__intro {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .ct-card__facts {
  margin: 0;
  border-top: 1px solid var(--rule);
}

.page-contact .ct-card__facts dt {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-contact .ct-card__facts dd {
  margin: 5px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

/* ---------- 02 勘误清单 ---------- */
.page-contact .ct-errata {
  display: grid;
  gap: 22px;
}

.page-contact .ct-checks {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-contact .ct-check {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px dashed var(--rule);
}

.page-contact .ct-check:first-child {
  border-top: 1px dashed var(--rule);
}

.page-contact .ct-check__no {
  display: grid;
  place-items: center;
  height: 34px;
  border: 1px solid var(--rule);
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  border-radius: var(--radius);
}

.page-contact .ct-check__title {
  margin: 0 0 5px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .ct-check__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

.page-contact .ct-errata__side {
  border: 1px solid var(--rule);
  background: var(--paper-2);
  padding: 22px 18px;
  box-shadow: 0 6px 12px rgba(30, 26, 22, 0.08);
}

.page-contact .ct-ring {
  position: relative;
  width: 132px;
  aspect-ratio: 1 / 1;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: repeating-conic-gradient(
    from 0deg,
    var(--rule) 0deg 1.5deg,
    transparent 1.5deg 15deg
  );
}

.page-contact .ct-ring__arc {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(var(--winter) 0deg 92deg, transparent 92deg 360deg);
}

.page-contact .ct-ring::after {
  content: "";
  position: absolute;
  inset: 15px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--rule);
}

.page-contact .ct-ring__txt {
  position: absolute;
  inset: 15px;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 2px;
  z-index: 1;
}

.page-contact .ct-ring__num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.page-contact .ct-ring__unit {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-contact .ct-errata__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink);
}

.page-contact .ct-errata__figure {
  margin: 18px 0 0;
}

.page-contact .ct-errata__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 03 联系方式 ---------- */
.page-contact .ct-contact {
  display: grid;
  gap: 14px;
}

.page-contact .ct-contact__card {
  background: var(--panel);
  padding: 22px 20px;
  border-left: 4px solid var(--fluoro);
  border-radius: var(--radius);
  color: #EFE9DC;
}

.page-contact .ct-contact__key {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--fluoro);
}

.page-contact .ct-contact__value {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  color: #F7F2E7;
  overflow-wrap: anywhere;
}

.page-contact .ct-contact__value--mono {
  font-family: var(--font-mono);
  font-size: clamp(14px, 4.2vw, 19px);
  letter-spacing: 0.01em;
}

.page-contact .ct-contact__value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 240, 60, 0.45);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-contact .ct-contact__value a:hover {
  color: var(--fluoro);
  border-bottom-color: var(--fluoro);
}

.page-contact .ct-contact__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(239, 233, 220, 0.72);
}

.page-contact .ct-contact__foot {
  margin: 18px 0 0;
  padding: 16px 18px;
  border: 1px solid var(--rule);
  border-left: 4px solid var(--winter);
  background: var(--paper-2);
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink);
}

/* ---------- 04 时效与边界 ---------- */
.page-contact .ct-service__grid {
  display: grid;
  gap: 16px;
}

.page-contact .ct-service__block {
  padding: 20px 18px;
  border: 1px solid var(--rule);
  background: var(--paper);
  border-top: 4px solid var(--autumn);
  box-shadow: 0 6px 12px rgba(30, 26, 22, 0.08);
}

.page-contact .ct-service__block--stop {
  border-top-color: var(--accent);
  background: var(--paper-2);
}

.page-contact .ct-service__title {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
}

.page-contact .ct-service__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .ct-service__list li {
  position: relative;
  padding: 10px 0 10px 20px;
  border-bottom: 1px solid var(--rule);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink);
}

.page-contact .ct-service__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .ct-service__list--time li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 8px;
  height: 8px;
  background: var(--autumn);
}

.page-contact .ct-service__list--stop li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 10px;
  height: 2px;
  background: var(--accent);
}

.page-contact .ct-service__tag {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 7px;
  border: 1px solid var(--rule);
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 05 备案档案条 ---------- */
.page-contact .ct-archive {
  margin-bottom: 8px;
}

.page-contact .ct-archive__strip {
  display: grid;
  gap: 18px;
  padding: 22px 20px;
  border: 1px solid var(--rule);
  background: var(--paper-2);
  box-shadow: 0 6px 12px rgba(30, 26, 22, 0.08);
}

.page-contact .ct-archive__brand {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

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

.page-contact .ct-archive__key {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-contact .ct-archive__icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.page-contact .ct-archive__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ct-archive__links a {
  padding: 7px 12px;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink);
  font-size: 13px;
  text-decoration: none;
  border-radius: var(--radius);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .ct-archive__links a:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .ct-hero {
    grid-template-columns: minmax(0, 1.35fr) minmax(230px, 0.65fr);
    align-items: end;
    gap: 40px;
  }

  .page-contact .ct-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .ct-service__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-contact .ct-archive__strip {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr);
    align-items: start;
  }

  .page-contact .ct-archive__links {
    grid-column: 1 / -1;
    padding-top: 16px;
    border-top: 1px solid var(--rule);
  }
}

@media (min-width: 900px) {
  .page-contact .ct-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .ct-card {
    padding: 24px 22px 10px;
  }
}

@media (min-width: 1000px) {
  .page-contact .ct-errata {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 32px;
    align-items: start;
  }

  .page-contact .ct-archive__strip {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.7fr) minmax(0, 1fr);
  }

  .page-contact .ct-archive__links {
    grid-column: auto;
    padding-top: 0;
    border-top: 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .page-contact .section {
    margin-top: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-tab,
  .page-contact .ct-card,
  .page-contact .ct-archive__links a {
    transition: none;
  }

  .page-contact .ct-tab:hover,
  .page-contact .ct-card:hover,
  .page-contact .ct-archive__links a:hover {
    transform: none;
  }
}