.page-contact {
  --ct-shadow: 6px 6px 0 0 #060B09;
  --ct-border: 1px solid var(--line);
  padding-bottom: 72px;
}

.page-contact .breadcrumb__sep {
  margin: 0 8px;
  color: var(--muted);
}

/* ---------- 首屏框景 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: 22px;
  margin: 20px 0 36px;
}

.page-contact .contact-hero__text {
  order: -1;
}

.page-contact .contact-hero__media {
  order: 0;
  margin: 0;
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
  filter: saturate(0.5) contrast(1.06);
}

.page-contact .contact-hero__text .h1 {
  margin: 12px 0 14px;
  max-width: 22ch;
}

.page-contact .contact-hero__text .prose {
  max-width: 56ch;
}

.page-contact .contact-hero__meta {
  list-style: none;
  margin: 20px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-contact .contact-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-contact .contact-hero__meta .mono {
  font-size: 0.94rem;
  color: var(--accent);
}

/* ---------- 主体分栏 ---------- */
.page-contact .contact-body {
  display: grid;
  gap: 34px;
}

.page-contact .contact-aside {
  display: grid;
  gap: 24px;
}

.page-contact .channel-stack {
  display: grid;
  gap: 14px;
}

.page-contact .channel-stack > .eyebrow {
  margin: 0;
}

.page-contact .channel-card {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: var(--ct-border);
  border-radius: 2px;
  padding: 16px 18px 18px;
  box-shadow: var(--ct-shadow);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
}

.page-contact .channel-card--alt::before {
  background: var(--home);
}

.page-contact .channel-card__title {
  margin: 14px 0 8px;
  font-family: var(--font-cond);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-strong);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.78rem, 3.6vw, 0.92rem);
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--accent);
  word-break: break-all;
}

.page-contact .channel-card--alt .channel-card__value {
  color: var(--home);
}

.page-contact .channel-card__note {
  margin: 12px 0 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 本页目录 ---------- */
.page-contact .contact-index {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-contact .contact-index > .eyebrow {
  margin: 0 0 10px;
}

.page-contact .contact-index .index-list__label {
  display: block;
  padding: 7px 0;
  font-size: 0.86rem;
  transition: color var(--dur) ease, transform var(--dur) ease;
}

.page-contact .contact-index .index-list__label.is-active {
  color: var(--accent);
  font-weight: 700;
  transform: translateX(4px);
}

/* ---------- 正文区块 ---------- */
.page-contact .contact-main {
  min-width: 0;
}

.page-contact .contact-section {
  margin-bottom: 46px;
}

.page-contact .contact-section:last-child {
  margin-bottom: 0;
}

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

.page-contact .contact-section > .h2 {
  margin: 0 0 16px;
}

.page-contact .contact-section > .prose {
  max-width: 62ch;
}

.page-contact .contact-section .prose + .prose {
  margin-top: 12px;
}

/* ---------- 响应时效条带 ---------- */
.page-contact .band--timing {
  display: grid;
  gap: 12px;
  margin: 22px 0;
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 2px;
  background: linear-gradient(100deg, var(--raise) 0%, var(--panel) 62%, var(--panel) 100%);
}

.page-contact .band--timing .band__label {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-contact .band--timing .band__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 13vw, 4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent);
  animation: ct-rise 0.6s ease-out both;
}

@keyframes ct-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-contact .band--timing .band__note {
  margin: 0;
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-contact .band--timing .band__stats {
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-contact .band--timing .band__stat {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 10px;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--ink);
}

.page-contact .band--timing .band__stat-num {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--accent-dim);
}

/* ---------- 反馈类型折叠 ---------- */
.page-contact .topic-list {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

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

.page-contact .topic__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 16px;
  align-items: center;
  gap: 12px;
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .topic__summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.page-contact .topic__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--accent-dim);
}

.page-contact .topic__name {
  font-family: var(--font-cond);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--ink-strong);
}

.page-contact .topic__hint {
  display: none;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}

.page-contact .topic__summary::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 1px solid var(--accent-dim);
  border-bottom: 1px solid var(--accent-dim);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--dur) ease;
}

.page-contact .topic[open] .topic__summary::after {
  transform: rotate(225deg) translate(-1px, -1px);
}

.page-contact .topic[open] .topic__num {
  color: var(--accent);
}

.page-contact .topic__body {
  padding: 0 2px 20px;
}

.page-contact .topic__body .prose {
  margin: 0;
  max-width: 60ch;
}

.page-contact .topic__format {
  margin: 12px 0 0;
  padding: 9px 12px;
  border-left: 2px solid var(--accent-dim);
  border-radius: 2px;
  background: var(--raise);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--ink-strong);
  word-break: break-all;
}

/* ---------- 地址 ---------- */
.page-contact .address-grid {
  display: grid;
  gap: 22px;
}

.page-contact .address-line {
  margin: 16px 0 12px;
  padding: 12px 0 12px 14px;
  border-left: 3px solid var(--accent-dim);
  background: linear-gradient(90deg, rgba(143, 168, 58, 0.12), rgba(143, 168, 58, 0) 72%);
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 3vw, 0.94rem);
  line-height: 1.75;
  color: var(--ink-strong);
  word-break: break-word;
}

.page-contact .address-note {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .address-media {
  margin: 0;
}

.page-contact .address-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.42) contrast(1.08);
}

/* ---------- 反馈准备清单 ---------- */
.page-contact .prepare-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .prepare-list li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .prepare-list__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.9;
  letter-spacing: 0.08em;
  color: var(--accent);
}

/* ---------- 相关页面 ---------- */
.page-contact .related {
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-contact .related > .eyebrow {
  margin: 0 0 12px;
}

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

.page-contact .related a {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--accent-dim);
  font-size: 0.86rem;
  color: var(--ink);
  text-decoration: none;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.page-contact .related a:hover,
.page-contact .related a:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.page-contact .related a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- 窄屏优先的放大断点 ---------- */
@media (min-width: 560px) {
  .page-contact .topic__hint {
    display: block;
  }

  .page-contact .topic__summary {
    grid-template-columns: auto minmax(0, 1fr) auto 16px;
  }
}

@media (min-width: 880px) {
  .page-contact {
    padding-bottom: 96px;
  }

  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
    gap: 40px;
    align-items: end;
    margin: 28px 0 52px;
  }

  .page-contact .contact-hero__text {
    order: 0;
  }

  .page-contact .contact-hero__text .h1 {
    font-size: clamp(2rem, 3.5vw, 3.1rem);
    line-height: 1.1;
    letter-spacing: -0.01em;
  }

  .page-contact .band--timing {
    padding: 24px 26px 22px;
  }

  .page-contact .band--timing .band__value {
    grid-column: 1 / -1;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-body {
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-contact .contact-aside {
    position: sticky;
    top: 96px;
  }

  .page-contact .band--timing .band__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

  .page-contact .address-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 36px;
    align-items: start;
  }

  .page-contact .related ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .band--timing .band__value {
    animation: none;
  }

  .page-contact .contact-index .index-list__label,
  .page-contact .topic__summary::after,
  .page-contact .related a {
    transition: none;
  }
}