.page-contact {
  --pc-ring: rgba(111, 233, 255, 0.22);
  --pc-card: var(--ink-base);
  --pc-line: var(--ink-line);
}

.page-contact .page-contact__crumbs {
  padding-top: clamp(16px, 3vw, 32px);
}

/* ---------- 首屏 ---------- */
.page-contact .page-contact__hero {
  position: relative;
  padding-bottom: clamp(44px, 6vw, 80px);
}

.page-contact .page-contact__hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--pc-ring) 30%, transparent);
  pointer-events: none;
}

.page-contact .page-contact__hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
}

.page-contact h1 {
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(32px, 6.2vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .page-contact__hero-lead {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: clamp(16px, 1.1vw + 13px, 18px);
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .page-contact__aside-panel {
  padding: clamp(20px, 3vw, 28px);
}

.page-contact .page-contact__aside-kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .page-contact__aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .page-contact__aside-list li {
  display: flex;
  gap: 10px;
  align-items: baseline;
}

/* ---------- 坐标点 ---------- */
.page-contact .page-contact__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(111, 233, 255, 0.12);
  transform: translateY(1px);
}

.page-contact .page-contact__dot--heat {
  background: var(--heat);
  box-shadow: 0 0 0 4px rgba(255, 107, 44, 0.16);
}

.page-contact .page-contact__dot--amber {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 201, 77, 0.14);
}

.page-contact .page-contact__dot--cyan {
  background: var(--cyan);
}

.page-contact .page-contact__dot--violet {
  background: var(--violet);
  box-shadow: 0 0 0 4px rgba(185, 168, 255, 0.14);
}

/* ---------- 联系渠道 ---------- */
.page-contact .page-contact__channel-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(28px, 4vw, 44px);
  align-items: start;
}

.page-contact .page-contact__channel-cards {
  display: grid;
  gap: 16px;
}

.page-contact .page-contact__channel {
  padding: clamp(20px, 2.6vw, 28px);
  display: grid;
  gap: 10px;
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.page-contact .page-contact__channel:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.page-contact .page-contact__channel-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .page-contact__channel-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .page-contact__channel-for {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .page-contact__channel .copy-btn {
  justify-self: start;
  margin-top: 4px;
}

.page-contact .page-contact__channel-hours {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .page-contact__channel-figure {
  margin: 0;
}

.page-contact .page-contact__channel-figure .media-frame {
  aspect-ratio: 3 / 2;
}

/* ---------- 反馈分类 ---------- */
.page-contact .page-contact__chips {
  margin-top: clamp(24px, 3vw, 36px);
}

.page-contact .chip[aria-pressed="true"] {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(111, 233, 255, 0.08);
}

.page-contact .page-contact__topic-list {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 3vw, 32px);
}

.page-contact .page-contact__topic {
  padding: clamp(20px, 2.6vw, 26px);
  border-radius: 14px;
  background: var(--pc-card);
  border: 1px solid var(--pc-line);
  border-left-width: 2px;
  border-left-color: var(--pc-ring);
  display: grid;
  gap: 12px;
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.page-contact .page-contact__topic:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.page-contact .page-contact__topic--p1 {
  border-left-color: var(--heat);
}

.page-contact .page-contact__topic--p2 {
  border-left-color: var(--amber);
}

.page-contact .page-contact__topic--p3 {
  border-left-color: var(--cyan);
}

.page-contact .page-contact__topic--p4 {
  border-left-color: var(--violet);
}

.page-contact .page-contact__topic-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .page-contact__topic-title {
  margin: 0;
  flex: 1 1 auto;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(19px, 2vw, 22px);
  color: var(--paper);
}

.page-contact .page-contact__topic-text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .page-contact__topic-need {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--pc-line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .page-contact__need-label {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .page-contact__topic-figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-contact .page-contact__topic-figure .media-frame {
  aspect-ratio: 10 / 7;
}

.page-contact .media-frame__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 数据纠错 ---------- */
.page-contact .page-contact__correct-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-contact .page-contact__note {
  margin: 20px 0 0;
  padding-left: 16px;
  border-left: 1px solid var(--pc-ring);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .page-contact__checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: pc-chk;
}

.page-contact .page-contact__checklist li {
  position: relative;
  padding: 16px 20px 16px 62px;
  border-radius: 12px;
  background: var(--pc-card);
  border: 1px solid var(--pc-line);
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .page-contact__checklist li::before {
  counter-increment: pc-chk;
  content: counter(pc-chk, decimal-leading-zero);
  position: absolute;
  left: 20px;
  top: 18px;
  font-family: var(--font-num);
  font-size: 16px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .page-contact__checklist strong {
  color: var(--paper);
  font-weight: 600;
}

/* ---------- 合作洽谈 ---------- */
.page-contact .page-contact__coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: clamp(28px, 4vw, 40px);
}

.page-contact .page-contact__coop-card {
  padding: clamp(22px, 2.6vw, 26px);
  display: grid;
  gap: 12px;
  align-content: start;
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.page-contact .page-contact__coop-card:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.page-contact .page-contact__coop-card .card__title {
  margin: 0;
}

.page-contact .page-contact__coop-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .page-contact__coop-need {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--pc-line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--paper);
}

/* ---------- 回复节奏 ---------- */
.page-contact .page-contact__timeline {
  list-style: none;
  position: relative;
  margin: clamp(34px, 5vw, 56px) 0 0;
  padding: 0 0 0 28px;
  display: grid;
  gap: 30px;
}

.page-contact .page-contact__timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(111, 233, 255, 0));
}

.page-contact .page-contact__tl-node {
  position: relative;
}

.page-contact .page-contact__tl-node::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-deep);
  border: 1px solid var(--cyan);
}

.page-contact .page-contact__tl-step {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .page-contact__tl-text {
  margin: 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 相关入口 ---------- */
.page-contact .page-contact__next-band {
  display: grid;
  gap: 20px;
  padding: clamp(24px, 3.4vw, 36px);
  border-radius: 16px;
  border: 1px solid var(--pc-ring);
  background:
    linear-gradient(135deg, rgba(111, 233, 255, 0.1), rgba(185, 168, 255, 0.05) 45%, rgba(255, 107, 44, 0.08));
}

.page-contact .page-contact__next-text {
  margin: 0;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.72;
  color: var(--paper);
}

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

/* ---------- 桌面 ---------- */
@media (min-width: 780px) {
  .page-contact .page-contact__coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

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

  .page-contact .page-contact__channel-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
  }

  .page-contact .page-contact__correct-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-contact .page-contact__next-band {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-contact .page-contact__timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
    padding: 44px 0 0;
  }

  .page-contact .page-contact__timeline::before {
    left: 0;
    right: 0;
    top: 6px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), rgba(111, 233, 255, 0.06));
  }

  .page-contact .page-contact__tl-node::before {
    left: 0;
    top: -42px;
  }

  .page-contact .page-contact__tl-text {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .page-contact__channel,
  .page-contact .page-contact__topic,
  .page-contact .page-contact__coop-card {
    transition: none;
  }

  .page-contact .page-contact__channel:hover,
  .page-contact .page-contact__topic:hover,
  .page-contact .page-contact__coop-card:hover {
    transform: none;
  }
}