.page-contact {
  --pc-glass: rgba(233, 247, 240, 0.10);
  --pc-glass-strong: rgba(233, 247, 240, 0.16);
  --pc-line-soft: rgba(44, 74, 69, 0.55);
  --pc-dot-glow: rgba(201, 255, 74, 0.16);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(28px, 4vw, 56px);
}

.page-contact .pc-hero__label {
  margin: 22px 0 14px;
  color: var(--teal);
}

.page-contact .pc-hero__title {
  margin: 0 0 18px;
  color: var(--text);
}

.page-contact .pc-hero__lede {
  margin: 0 0 clamp(24px, 3vw, 36px);
  max-width: 60ch;
  color: var(--muted);
}

.page-contact .pc-quick {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
}

.page-contact .pc-quick__item {
  padding: 16px 18px;
  border: 1px solid var(--pc-line-soft);
  border-radius: var(--radius);
  background: var(--pc-glass);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

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

.page-contact .pc-quick__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.5vw, 17px);
  font-weight: 700;
  color: var(--text);
  word-break: break-word;
  line-height: 1.4;
}

/* ---------- 通用章节头部 ---------- */
.page-contact .pc-h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 42px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-contact .pc-sub {
  margin: 0;
  max-width: 56ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 联系方式 ---------- */
.page-contact .pc-channels .section__head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .pc-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .pc-channels__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .pc-channel {
  padding: 20px 20px 22px;
  border-left: 3px solid var(--lime);
  transition: border-color 220ms var(--ease), background-color 220ms var(--ease);
}

.page-contact .pc-channel:hover {
  border-left-color: var(--teal);
  background-color: rgba(233, 247, 240, 0.06);
}

.page-contact .pc-channel__k {
  margin: 0 0 10px;
  color: var(--teal);
}

.page-contact .pc-channel__value {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2vw, 22px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  word-break: break-word;
}

.page-contact .pc-channel__value--text {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 600;
}

.page-contact .pc-channel__desc {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-contact .pc-channels__media .media__frame {
  border: 1px solid var(--pc-line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-700);
}

.page-contact .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .pc-channels__caption,
.page-contact .pc-prep__caption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.6;
}

/* ---------- 问题分类 ---------- */
.page-contact .pc-topics-sec .section__head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .pc-topics {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .pc-topic {
  padding: 22px 20px 20px;
  border: 1px solid var(--pc-line-soft);
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-contact .pc-topic:hover {
  border-color: var(--lime);
}

.page-contact .pc-topic__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.page-contact .pc-topic__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-contact .pc-topic__desc {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-contact .pc-topic__meta {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--pc-line-soft);
  display: grid;
  gap: 12px;
}

.page-contact .pc-topic__meta dt {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
}

.page-contact .pc-topic__meta dd {
  margin: 5px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text);
}

/* ---------- 处理节奏时间线 ---------- */
.page-contact .pc-process .section__head {
  margin-bottom: clamp(24px, 3.5vw, 44px);
}

.page-contact .pc-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .pc-timeline__item {
  position: relative;
  padding-left: 40px;
}

.page-contact .pc-timeline__item::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 24px;
  bottom: -26px;
  width: 2px;
  background: linear-gradient(180deg, var(--pc-line-soft), rgba(44, 74, 69, 0.15));
}

.page-contact .pc-timeline__item:last-child::after {
  display: none;
}

.page-contact .pc-timeline__dot {
  position: absolute;
  left: 0;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 5px var(--pc-dot-glow);
}

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

.page-contact .pc-timeline__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.1vw, 22px);
  font-weight: 600;
  color: var(--text);
}

.page-contact .pc-timeline__desc {
  margin: 0;
  max-width: 44ch;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.75;
}

/* ---------- 提交准备 ---------- */
.page-contact .pc-prep {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.page-contact .pc-prep__lede {
  margin: 0 0 20px;
  max-width: 52ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

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

.page-contact .pc-checks li {
  position: relative;
  padding-left: 24px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-contact .pc-checks li strong {
  color: var(--text);
  font-weight: 600;
}

.page-contact .pc-checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 12px;
  height: 2px;
  background: var(--lime);
}

.page-contact .pc-prep__media {
  margin: 0;
}

.page-contact .pc-prep__media .media__frame {
  border: 1px solid var(--pc-line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-700);
}

/* ---------- 服务范围 ---------- */
.page-contact .pc-scope {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 36px);
}

.page-contact .pc-scope__body p {
  margin: 0 0 16px;
  max-width: 62ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-contact .pc-links {
  list-style: none;
  margin: 22px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--pc-line-soft);
  display: grid;
  gap: 12px;
}

.page-contact .pc-links__a {
  display: inline-block;
  color: var(--text);
  font-size: 14.5px;
  text-decoration: none;
  border-bottom: 1px solid var(--pc-line-soft);
  padding-bottom: 3px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .pc-links__a:hover,
.page-contact .pc-links__a:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

/* ---------- 焦点态 ---------- */
.page-contact .pc-links__a:focus-visible,
.page-contact .pc-channel:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-contact .pc-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .pc-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-contact .pc-channels__media {
    position: sticky;
    top: calc(var(--header-h) + 16px);
  }

  .page-contact .pc-timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    padding-top: 36px;
  }

  .page-contact .pc-timeline::before {
    content: "";
    position: absolute;
    left: 8px;
    right: 8px;
    top: 7px;
    height: 2px;
    background: linear-gradient(90deg, var(--lime), var(--teal) 55%, var(--pc-line-soft));
  }

  .page-contact .pc-timeline__item {
    padding-left: 0;
    padding-right: 32px;
  }

  .page-contact .pc-timeline__item::after {
    display: none;
  }

  .page-contact .pc-timeline__dot {
    top: -36px;
    left: 0;
  }

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

  .page-contact .pc-scope {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-contact .pc-scope__lead {
    position: sticky;
    top: calc(var(--header-h) + 16px);
  }
}

@media (min-width: 1180px) {
  .page-contact .pc-channels__cards {
    gap: 16px;
  }

  .page-contact .pc-topic {
    padding: 26px 24px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-channel,
  .page-contact .pc-topic,
  .page-contact .pc-links__a,
  .page-contact .pc-timeline__dot {
    transition: none;
  }
}