.page-contact {
  --reach-gap: 22px;
  --trail-line: var(--track);
  padding-bottom: calc(var(--dock-h) + 64px);
  background:
    radial-gradient(880px 520px at 6% -6%, rgba(53, 242, 216, .07), transparent 62%),
    radial-gradient(720px 460px at 96% 18%, rgba(255, 138, 61, .055), transparent 66%);
  background-repeat: no-repeat;
  overflow-x: hidden;
}

.page-contact .breadcrumb-sep {
  color: var(--index);
  margin: 0 8px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: 26px;
  padding-bottom: 52px;
  max-width: 940px;
}

.page-contact .contact-hero .h-display {
  margin: 14px 0 22px;
  letter-spacing: -0.015em;
}

.page-contact .contact-hero .lede {
  max-width: 58ch;
  margin: 0;
}

/* ---------- 三块联系卡片 ---------- */
.page-contact .reach-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 34px;
}

.page-contact .reach-card {
  position: relative;
  background: var(--night);
  border: 1px solid var(--track);
  border-radius: var(--radius-soft);
  padding: 26px 22px 24px 26px;
  overflow: hidden;
}

.page-contact .reach-card::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), rgba(255, 138, 61, .85));
  opacity: .8;
}

.page-contact .reach-card--phone {
  background: linear-gradient(160deg, rgba(53, 242, 216, .07), transparent 58%), var(--night);
}

.page-contact .reach-card--addr {
  background: var(--slate);
  border-color: rgba(199, 245, 236, .18);
}

.page-contact .reach-label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--index);
}

.page-contact .reach-value {
  margin: 0 0 12px;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .reach-note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--grey);
}

.page-contact .copyable {
  display: inline-block;
  max-width: 100%;
  padding: 3px 10px;
  border: 1px dashed rgba(53, 242, 216, .38);
  border-radius: var(--radius-chip);
  background: rgba(53, 242, 216, .08);
  font-family: var(--font-mono);
  font-size: 14.5px;
  letter-spacing: .02em;
  color: var(--paper);
  word-break: break-all;
  -webkit-user-select: all;
  user-select: all;
}

.page-contact .copyable--loud {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--cyan);
  border-style: solid;
  border-color: rgba(53, 242, 216, .45);
  background: rgba(53, 242, 216, .1);
}

.page-contact .contact-figure {
  margin: 34px 0 0;
}

.page-contact .contact-figure .figure__caption {
  margin-top: 12px;
}

/* ---------- 写信准备 ---------- */
.page-contact .prep-list {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--track);
  border: 1px solid var(--track);
  border-radius: var(--radius-soft);
  overflow: hidden;
  counter-reset: prep;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  padding: 20px 18px;
  background: var(--ink);
}

.page-contact .prep-num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--amber);
  padding-top: 4px;
}

.page-contact .prep-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-contact .prep-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey);
  max-width: 62ch;
}

/* ---------- 优先分派 ---------- */
.page-contact .channel {
  position: relative;
  padding: 30px 22px 28px;
  background: var(--night);
  border: 1px solid var(--track);
  border-radius: 22px 6px 26px 8px;
  overflow: hidden;
}

.page-contact .channel::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(53, 242, 216, .16), transparent 70%);
  pointer-events: none;
}

.page-contact .channel .h-section {
  margin: 12px 0 16px;
}

.page-contact .channel-text {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--grey);
  max-width: 64ch;
}

.page-contact .subject-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--index);
}

.page-contact .subject-sample {
  margin: 0 0 18px;
  padding: 16px 18px;
  background: var(--mist);
  border-radius: 14px 4px 14px 4px;
}

.page-contact .subject-sample code {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.65;
  letter-spacing: .02em;
  color: var(--ink);
  word-break: break-all;
}

.page-contact .channel-note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--grey);
  max-width: 60ch;
}

/* ---------- 轨道分流 ---------- */
.page-contact .trail {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
}

.page-contact .trail-item {
  position: relative;
  padding: 0 0 30px 30px;
  border-left: 1px solid var(--trail-line);
}

.page-contact .trail-item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-contact .trail-node {
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-contact .trail-item:first-child .trail-node {
  background: var(--amber);
  box-shadow: 0 0 0 5px rgba(255, 138, 61, .16);
}

.page-contact .trail-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-contact .trail-text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey);
  max-width: 40ch;
}

.page-contact .trail-link {
  display: inline-block;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 216, .45);
  padding-bottom: 2px;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-contact .trail-link:hover,
.page-contact .trail-link:focus-visible {
  border-bottom-color: var(--cyan);
  color: var(--mist);
}

/* ---------- 反馈之后 ---------- */
.page-contact .after-grid {
  display: grid;
  gap: 30px;
  margin-top: 34px;
}

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

.page-contact .after-step {
  position: relative;
  padding: 18px 18px 18px 20px;
  background: var(--night);
  border: 1px solid var(--track);
  border-left: 2px solid var(--cyan);
  border-radius: 4px 18px 6px 18px;
}

.page-contact .after-num {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-contact .after-title {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-contact .after-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--grey);
}

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

/* ---------- 自助入口 ---------- */
.page-contact .self-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 30px;
}

.page-contact .self-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--night);
  border: 1px solid var(--track);
  border-radius: var(--radius-soft);
  padding: 22px 20px;
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-contact .self-card:hover,
.page-contact .self-card:focus-visible {
  border-color: rgba(53, 242, 216, .5);
  transform: translateY(-2px);
}

.page-contact .self-card .card__index {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--index);
}

.page-contact .self-card .card__title {
  margin: 10px 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-contact .self-card .card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--grey);
}

.page-contact .self-card:hover .card__title,
.page-contact .self-card:focus-visible .card__title {
  color: var(--cyan);
}

/* ---------- 中等屏 ---------- */
@media (min-width: 700px) {
  .page-contact .reach-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .reach-card--addr {
    grid-column: 1 / -1;
  }

  .page-contact .prep-item {
    grid-template-columns: 56px 1fr;
    gap: 20px;
    padding: 24px 26px;
  }

  .page-contact .self-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .channel {
    padding: 38px 34px 34px;
  }
}

/* ---------- 桌面端：不等宽错位与横向轨道 ---------- */
@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding-top: 34px;
    padding-bottom: 64px;
  }

  .page-contact .reach-row {
    grid-template-columns: 42fr 33fr 25fr;
    gap: var(--reach-gap);
    align-items: start;
    margin-top: 40px;
  }

  .page-contact .reach-card--addr {
    grid-column: auto;
  }

  .page-contact .reach-card:nth-child(2) {
    margin-top: 28px;
  }

  .page-contact .reach-card:nth-child(3) {
    margin-top: 56px;
  }

  .page-contact .contact-figure {
    margin-top: 44px;
  }

  .page-contact .trail {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 42px;
  }

  .page-contact .trail-item {
    border-left: 0;
    border-top: 1px solid var(--trail-line);
    padding: 30px 34px 0 0;
  }

  .page-contact .trail-item:last-child {
    padding-right: 0;
  }

  .page-contact .trail-node {
    left: 0;
    top: -5px;
  }

  .page-contact .after-grid {
    grid-template-columns: 1.1fr .9fr;
    gap: 48px;
    align-items: start;
    margin-top: 40px;
  }

  .page-contact .self-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }

  .page-contact .self-card:nth-child(2) {
    margin-top: 24px;
  }

  .page-contact .self-card:nth-child(4) {
    margin-top: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .self-card {
    transition: none;
  }

  .page-contact .self-card:hover,
  .page-contact .self-card:focus-visible {
    transform: none;
  }
}