/* ============ 联系我们 ============ */
.page-contact {
  --pc-gap: clamp(1.1rem, 2.6vw, 1.75rem);
  --pc-r: 20px 14px 22px 16px;
  background: var(--ink-900);
  color: var(--text);
  overflow-x: clip;
}

.page-contact a:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-contact .section {
  position: relative;
  padding-block: clamp(2.6rem, 6vw, 4.4rem);
}

.page-contact .pc-section + .pc-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ink-700) 14%, var(--ink-700) 86%, transparent);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(1.8rem, 5vw, 3.4rem));
  padding-bottom: clamp(2rem, 5vw, 3.2rem);
  background:
    radial-gradient(120% 85% at 88% -12%, rgba(51, 225, 225, .13), transparent 62%),
    radial-gradient(90% 70% at 4% 112%, rgba(182, 52, 126, .11), transparent 62%);
}

.page-contact .breadcrumbs {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin: 0 0 1.4rem;
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-contact .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s ease, border-color .25s ease;
}

.page-contact .breadcrumbs a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .pc-hero__title {
  margin: 0 0 1.15rem;
  max-width: 18ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 7.6vw, 4.8rem);
  line-height: 1.04;
  letter-spacing: .01em;
}

.page-contact .pc-lede {
  margin: 0;
  max-width: 44rem;
  padding-left: 1.1rem;
  border-left: 2px solid var(--cyan);
  font-size: clamp(1rem, 2.2vw, 1.1rem);
  line-height: 1.9;
  color: var(--muted);
}

.page-contact .pc-links {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin: clamp(1.5rem, 4vw, 2.1rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-link {
  display: inline-flex;
  align-items: center;
  padding: .58rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: .87rem;
  color: var(--text);
  text-decoration: none;
  transition: border-color .25s ease, color .25s ease, background .25s ease;
}

.page-contact .pc-link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-soft);
}

/* ---------- 章节头 ---------- */
.page-contact .section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(.9rem, 2.5vw, 1.7rem);
  align-items: start;
  margin-bottom: clamp(1.7rem, 4vw, 2.6rem);
}

.page-contact .section-head__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.3rem, 6vw, 3.9rem);
  line-height: .88;
  color: var(--ink-600);
  letter-spacing: .01em;
}

.page-contact .section-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.6vw, 2.25rem);
  line-height: 1.18;
  color: var(--text);
}

.page-contact .section-head__note {
  margin: .6rem 0 0;
  max-width: 42rem;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .sub-title {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.06rem;
  letter-spacing: .04em;
  color: var(--text);
}

.page-contact .sub-title::before {
  content: "";
  flex: none;
  width: 1.2rem;
  height: 2px;
  background: var(--cyan);
}

/* ---------- 图片 ---------- */
.page-contact .media {
  margin: 0;
}

.page-contact .media__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-media);
  background: var(--ink-800);
  object-fit: cover;
}

.page-contact .media--tall .media__img {
  aspect-ratio: 3 / 4;
}

.page-contact .media__caption {
  margin-top: .7rem;
  font-size: .78rem;
  line-height: 1.65;
  letter-spacing: .02em;
  color: var(--muted);
}

/* ---------- 01 客服通道 ---------- */
.page-contact .pc-channels {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .pc-channel-list {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .channel {
  position: relative;
  padding: clamp(1.4rem, 3vw, 1.9rem);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--pc-r);
  transition: border-color .3s ease, transform .3s ease, box-shadow .3s ease;
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(1.4rem, 3vw, 1.9rem);
  width: clamp(3rem, 20%, 7rem);
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
}

.page-contact .channel:hover {
  border-color: var(--orange);
  transform: translateY(-3px);
  box-shadow: 0 20px 44px rgba(4, 12, 22, .55);
}

.page-contact .channel:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
  border-color: var(--orange);
}

.page-contact .channel__label {
  margin: 0 0 .85rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .channel__value {
  display: inline-block;
  max-width: 100%;
  margin: 0;
  padding-bottom: .4rem;
  border-bottom: 2px solid var(--cyan);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1rem, 4.2vw, 2.05rem);
  line-height: 1.3;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .channel__uses {
  display: grid;
  gap: .5rem;
  margin: 1.15rem 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel__uses li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--text);
}

.page-contact .channel__uses li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: .55rem;
  height: 1px;
  background: var(--cyan);
  opacity: .85;
}

.page-contact .channel__meta {
  margin: 1.15rem 0 0;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
  font-size: .85rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 02 数据纠错 ---------- */
.page-contact .fix {
  display: grid;
  gap: clamp(1.8rem, 4.5vw, 3rem);
}

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

.page-contact .step {
  position: relative;
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr);
  column-gap: 1.1rem;
  padding-bottom: clamp(1.7rem, 4vw, 2.3rem);
}

.page-contact .step:last-child {
  padding-bottom: 0;
}

.page-contact .step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 1.6rem;
  top: 3.55rem;
  bottom: .5rem;
  border-left: 1px dashed var(--line);
}

.page-contact .step__num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 3.2rem;
  height: 3.2rem;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1rem;
  color: var(--cyan);
}

.page-contact .step__body {
  padding-top: .45rem;
}

.page-contact .step__title {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.12rem;
  letter-spacing: .01em;
  color: var(--text);
}

.page-contact .step__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .fix-note {
  margin: clamp(1.7rem, 4vw, 2.3rem) 0 0;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--pc-r) var(--pc-r) 0;
  background: var(--orange-soft);
  font-size: .9rem;
  line-height: 1.82;
  color: var(--text);
}

/* ---------- 03 合作与内容授权 ---------- */
.page-contact .collab {
  display: grid;
  gap: clamp(1.8rem, 4.5vw, 3rem);
}

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

.page-contact .dir {
  display: grid;
  gap: .3rem;
  padding: 1rem 0 1.05rem;
  border-top: 1px solid var(--line);
}

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

.page-contact .dir__key {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-contact .dir__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .collab-aside {
  padding: clamp(1.35rem, 3vw, 1.85rem);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--pc-r);
}

.page-contact .dot-list {
  display: grid;
  gap: .7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .dot-list li {
  position: relative;
  padding-left: 1.35rem;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .dot-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .64em;
  width: .42rem;
  height: .42rem;
  border: 1px solid var(--cyan);
  border-radius: 50%;
}

.page-contact .collab-aside__note {
  margin: 1.3rem 0 0;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
  font-size: .85rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 04 媒体与引用 ---------- */
.page-contact .media-block {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: clamp(1.4rem, 3.5vw, 2.4rem);
  padding: clamp(1.5rem, 4vw, 2.4rem);
  border: 1px solid var(--line);
  border-radius: var(--pc-r);
  background: linear-gradient(150deg, var(--ink-800) 0%, rgba(16, 33, 56, .6) 48%, var(--ink-900) 100%);
}

.page-contact .media-block::before {
  content: "";
  position: absolute;
  top: -42%;
  right: -16%;
  width: 55%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(51, 225, 225, .14), transparent 70%);
  pointer-events: none;
}

.page-contact .media-block__col {
  position: relative;
}

.page-contact .media-block__col p {
  margin: 0;
  font-size: .94rem;
  line-height: 1.86;
  color: var(--muted);
}

.page-contact .media-block__col a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 225, 225, .45);
  transition: border-color .25s ease;
}

.page-contact .media-block__col a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 05 通讯地址 ---------- */
.page-contact .addr {
  padding: clamp(1.5rem, 4vw, 2.3rem);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--pc-r);
  background: var(--ink-800);
}

.page-contact .addr__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .addr__value {
  margin: .5rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 4.4vw, 2.25rem);
  line-height: 1.3;
  color: var(--text);
}

.page-contact .addr__note {
  margin: 1rem 0 0;
  max-width: 36rem;
  font-size: .88rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .icp {
  margin: 1.4rem 0 0;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width: 719px) {
  .page-contact .media--tall .media__img {
    aspect-ratio: 4 / 5;
  }
}

@media (min-width: 820px) {
  .page-contact .media-block {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-contact .pc-channels {
    grid-template-columns: minmax(220px, 30%) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .collab {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .fix {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }
}

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

  .page-contact .channel:hover {
    transform: none;
  }
}
</main>