.page-contact {
  --pc-card-bg: linear-gradient(165deg, #1a212b 0%, #10151c 100%);
  --pc-shadow: 0 16px 34px rgba(0, 0, 0, 0.42);
  --pc-dash: rgba(36, 224, 200, 0.42);
  display: block;
  background: var(--yb-bg);
  color: var(--yb-ink);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--yb-line);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .contact-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.55) contrast(1.15) brightness(0.62);
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(11, 14, 18, 0.7) 0%, rgba(11, 14, 18, 0.93) 58%, var(--yb-bg) 100%),
    radial-gradient(120% 90% at 82% 10%, rgba(226, 35, 26, 0.22), transparent 62%);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  padding-bottom: clamp(2rem, 5vw, 3.75rem);
}

.page-contact .contact-hero__title {
  font-family: var(--yb-font-display);
  font-weight: 900;
  font-size: clamp(2.15rem, 8vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: 0.01em;
  margin: 0.55rem 0 0;
  color: var(--yb-ink);
}

.page-contact .contact-hero__lead {
  max-width: 40rem;
  margin: 1.1rem 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--yb-ink);
  opacity: 0.86;
}

/* ---------- 渠道卡片 ---------- */
.page-contact .contact-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.35rem;
  margin-top: clamp(2rem, 5vw, 3rem);
}

.page-contact .contact-channel {
  position: relative;
  min-width: 0;
  padding: 1.6rem 1.25rem 1.25rem;
  background: var(--pc-card-bg);
  border: 1px solid var(--yb-line);
  border-top: 3px solid var(--yb-red);
  border-radius: var(--yb-r-md);
  box-shadow: var(--pc-shadow);
  transition: transform 0.3s var(--yb-ease), box-shadow 0.3s var(--yb-ease), border-color 0.3s var(--yb-ease);
}

.page-contact .contact-channel:hover {
  transform: translateY(-4px);
  border-color: rgba(226, 35, 26, 0.55);
  box-shadow: 0 22px 42px rgba(140, 20, 16, 0.36);
}

.page-contact .contact-channel__tag {
  position: absolute;
  top: -0.7rem;
  right: 0.95rem;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
}

.page-contact .contact-channel__label {
  margin: 0;
  font-family: var(--yb-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--yb-muted);
}

.page-contact .contact-channel__value {
  display: block;
  margin: 0.6rem 0 0.85rem;
  font-family: var(--yb-font-mono);
  font-size: clamp(1.02rem, 4vw, 1.32rem);
  line-height: 1.5;
  color: var(--yb-gold);
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--yb-ease), border-color 0.25s var(--yb-ease);
}

.page-contact a.contact-channel__value:hover,
.page-contact a.contact-channel__value:focus-visible {
  color: var(--yb-cyan);
  border-bottom-color: var(--yb-cyan);
}

.page-contact .contact-channel__value--plain {
  color: var(--yb-ink);
  font-size: clamp(0.95rem, 3.4vw, 1.08rem);
  line-height: 1.7;
  word-break: normal;
}

.page-contact .contact-channel__note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--yb-ink);
  opacity: 0.78;
}

.page-contact .contact-channel__meta {
  margin: 0.9rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--yb-line);
  font-family: var(--yb-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--yb-cyan);
}

/* ---------- 主题区块 ---------- */
.page-contact .contact-topic {
  border-bottom: 1px solid var(--yb-line);
}

.page-contact .contact-topic h2,
.page-contact .contact-flow-section h2,
.page-contact .contact-address h2 {
  font-family: var(--yb-font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 5.5vw, 2.6rem);
  line-height: 1.1;
  margin: 0.5rem 0 0;
  color: var(--yb-ink);
}

.page-contact .contact-topic__body {
  margin-top: 1.1rem;
}

.page-contact .contact-topic__body p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--yb-ink);
  opacity: 0.86;
}

.page-contact .contact-topic__aside {
  margin: 1.5rem 0 0;
  padding-left: 0.95rem;
  border-left: 2px solid var(--yb-cyan);
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--yb-muted);
}

.page-contact .contact-topic__aside a {
  color: var(--yb-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--yb-line-cyan);
}

.page-contact .contact-topic__aside a:hover,
.page-contact .contact-topic__aside a:focus-visible {
  color: var(--yb-gold);
  border-bottom-color: var(--yb-gold);
}

/* 纠错要点 */
.page-contact .contact-points {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.7rem;
}

.page-contact .contact-points li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  min-width: 0;
  padding: 1rem 1.05rem;
  background: var(--yb-bg-2);
  border-left: 2px solid var(--yb-cyan);
  border-radius: var(--yb-r-sm);
  transition: transform 0.3s var(--yb-ease), background 0.3s var(--yb-ease);
}

.page-contact .contact-points li:hover {
  transform: translateX(4px);
  background: var(--yb-bg-3);
}

.page-contact .contact-points__num {
  font-family: var(--yb-font-mono);
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--yb-red);
}

.page-contact .contact-points__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--yb-ink);
}

.page-contact .contact-points__text {
  margin: 0.3rem 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--yb-muted);
}

/* 数据查询清单 */
.page-contact .contact-query-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  border-top: 1px solid var(--yb-line);
}

.page-contact .contact-query-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.25rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--yb-line);
}

.page-contact .contact-query-list__key {
  font-family: var(--yb-font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--yb-gold);
}

.page-contact .contact-query-list__val {
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--yb-ink);
  opacity: 0.82;
}

/* 会员档位 */
.page-contact .contact-tiers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.page-contact .contact-tier {
  position: relative;
  min-width: 0;
  padding: 1.25rem 1.15rem 1.15rem;
  background: var(--yb-bg-2);
  border: 1px solid var(--yb-line);
  border-radius: var(--yb-r-md);
  overflow: hidden;
}

.page-contact .contact-tier::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 42px;
  height: 3px;
  background: linear-gradient(90deg, var(--yb-gold), var(--yb-red));
}

.page-contact .contact-tier__name {
  margin: 0.35rem 0 0;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--yb-ink);
}

.page-contact .contact-tier__desc {
  margin: 0.5rem 0 0;
  font-size: 0.89rem;
  line-height: 1.7;
  color: var(--yb-muted);
}

/* ---------- 流程 ---------- */
.page-contact .contact-flow-section {
  border-bottom: 1px solid var(--yb-line);
}

.page-contact .contact-flow__figure {
  margin: 1.5rem 0 0;
  border-radius: var(--yb-r-md);
  overflow: hidden;
  border: 1px solid var(--yb-line);
}

.page-contact .contact-flow__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 7 / 3;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.1) brightness(0.78);
}

.page-contact .contact-flow {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
}

.page-contact .contact-flow__step {
  position: relative;
  min-width: 0;
  padding-top: 0.35rem;
}

.page-contact .contact-flow__num {
  display: block;
  font-family: var(--yb-font-mono);
  font-size: 2.1rem;
  line-height: 1;
  color: var(--yb-red);
  letter-spacing: 0.02em;
}

.page-contact .contact-flow__step h3 {
  margin: 0.55rem 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--yb-ink);
}

.page-contact .contact-flow__step p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--yb-muted);
}

/* ---------- 地址收尾 ---------- */
.page-contact .contact-address {
  border-bottom: none;
}

.page-contact .contact-address__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.page-contact .contact-address__card {
  position: relative;
  min-width: 0;
  padding: 1.2rem 1.15rem;
  background: var(--yb-bg-2);
  border: 1px solid var(--yb-line);
  border-radius: var(--yb-r-md);
}

.page-contact .contact-address__card::after {
  content: "";
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--yb-cyan);
  opacity: 0.75;
}

.page-contact .contact-address__key {
  margin: 0;
  font-family: var(--yb-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--yb-muted);
}

.page-contact .contact-address__value {
  margin: 0.6rem 0 0;
  font-family: var(--yb-font-mono);
  font-size: 0.98rem;
  line-height: 1.75;
  color: var(--yb-ink);
  overflow-wrap: anywhere;
}

.page-contact .contact-address__coord {
  margin: 1.75rem 0 0;
  font-family: var(--yb-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--yb-muted);
  text-transform: uppercase;
}

.page-contact .contact-icp {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1rem 0 0;
  padding: 0.45rem 0.9rem;
  font-family: var(--yb-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--yb-muted);
  background: rgba(244, 241, 234, 0.06);
  border: 1px dashed var(--yb-line);
  border-radius: var(--yb-r-sm);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-query-list li {
    grid-template-columns: 170px 1fr;
    align-items: baseline;
    gap: 1.25rem;
  }
}

@media (min-width: 760px) {
  .page-contact .contact-channels {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .contact-tiers {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .contact-address__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .contact-channel {
    padding: 1.7rem 1.4rem 1.4rem;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.6rem;
  }

  .page-contact .contact-flow__step::after {
    content: "";
    position: absolute;
    top: 1.02rem;
    left: 3.4rem;
    right: 0.9rem;
    border-top: 1px dashed var(--pc-dash);
  }

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

  .page-contact .contact-points {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .contact-points li {
    align-items: start;
  }
}