.page-contact {
  --pc-gap: clamp(18px, 2.6vw, 34px);
  --pc-radius: 18px;
  --pc-tint: rgba(29, 107, 255, .12);
  display: block;
  overflow-wrap: break-word;
}

.page-contact .sb-shell {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  padding-top: clamp(14px, 3vw, 30px);
}

.page-contact .pc-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: end;
}

.page-contact .pc-hero__title {
  margin: 10px 0 14px;
  line-height: 1.05;
  letter-spacing: -.02em;
  background: linear-gradient(120deg, var(--sb-white) 34%, var(--sb-cyan) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: var(--sb-white);
}

@supports (-webkit-background-clip: text) {
  .page-contact .pc-hero__title { color: transparent; }
}

.page-contact .pc-hero__copy .sb-lede {
  max-width: 46ch;
}

.page-contact .pc-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-contact .pc-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--sb-line);
  border: 1px solid var(--sb-line);
  border-radius: var(--sb-r);
  overflow: hidden;
}

.page-contact .pc-hero__stat {
  background: var(--sb-ink-2);
  padding: 14px 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.page-contact .pc-hero__stat::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--sb-grad);
  opacity: .8;
}

.page-contact .pc-stat__num {
  font-family: var(--sb-mono);
  font-size: clamp(18px, 4.4vw, 26px);
  font-weight: 700;
  color: var(--sb-white);
  letter-spacing: -.01em;
}

.page-contact .pc-stat__label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--sb-steel);
}

.page-contact .pc-hero__media {
  margin: clamp(28px, 5vw, 52px) 0 0;
  border: 1px solid var(--sb-line);
  border-radius: var(--sb-r-l);
  overflow: hidden;
  background: linear-gradient(118deg, var(--sb-ink-2), var(--sb-ink) 52%, rgba(22, 224, 210, .14));
}

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

.page-contact .pc-hero__media .sb-media__caption {
  padding: 12px clamp(14px, 2vw, 22px);
  border-top: 1px solid var(--sb-line);
  font-size: 12px;
  color: var(--sb-steel);
}

/* ---------- 路径选择 + 侧栏 ---------- */
.page-contact .pc-paths {
  padding-top: clamp(38px, 6vw, 78px);
}

.page-contact .pc-paths__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .pc-tabs {
  margin-top: 24px;
}

.page-contact .pc-tabs .sb-tabs__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: none;
  border: 0;
  padding: 0;
}

.page-contact .pc-tabs .sb-tabs__tab {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  text-align: left;
  padding: 14px 18px;
  border: 1px solid var(--sb-line);
  border-radius: var(--sb-r);
  background: var(--sb-glass-deep);
  color: var(--sb-white);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color .22s var(--sb-ease), background .22s var(--sb-ease), transform .22s var(--sb-ease);
}

.page-contact .pc-tabs .sb-tabs__tab:hover {
  border-color: var(--sb-line-strong);
  transform: translateY(-2px);
}

.page-contact .pc-tabs .sb-tabs__tab[aria-selected="true"] {
  border-color: var(--sb-orange);
  box-shadow: 0 0 0 1px rgba(255, 106, 26, .35), 0 12px 30px -18px rgba(255, 106, 26, .8);
  background: linear-gradient(96deg, rgba(255, 106, 26, .14), rgba(29, 107, 255, .12));
}

.page-contact .pc-tabs .sb-tabs__tab:focus-visible {
  outline: 2px solid var(--sb-cyan);
  outline-offset: 2px;
}

.page-contact .pc-tab__num {
  font-family: var(--sb-mono);
  font-size: 12px;
  color: var(--sb-steel);
  border: 1px solid var(--sb-line);
  border-radius: 6px;
  padding: 2px 6px;
  flex: none;
}

.page-contact .pc-tabs .sb-tabs__tab[aria-selected="true"] .pc-tab__num {
  color: var(--sb-orange);
  border-color: rgba(255, 106, 26, .5);
}

.page-contact .pc-tab__name {
  flex: 1 1 auto;
  min-width: 0;
}

.page-contact .pc-tabpanel {
  margin-top: 18px;
  padding: 20px clamp(16px, 2.4vw, 26px);
  border: 1px solid var(--sb-line);
  border-left: 3px solid transparent;
  border-image: var(--sb-grad) 1;
  border-radius: var(--sb-r);
  background: var(--sb-ink-2);
}

.page-contact .pc-tabpanel p {
  margin: 8px 0 10px;
  color: var(--sb-white);
  opacity: .9;
  line-height: 1.75;
}

/* 侧栏 */
.page-contact .pc-rail {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.page-contact .pc-rail__card {
  padding: 20px clamp(16px, 2.4vw, 24px);
  border-radius: var(--sb-r-l);
  border: 1px solid var(--sb-line);
  background: linear-gradient(160deg, rgba(231, 237, 249, .1), rgba(11, 18, 38, .78));
}

.page-contact .pc-rail__title {
  margin: 0 0 14px;
  font-size: 14px;
  letter-spacing: .14em;
  color: var(--sb-cyan);
  font-weight: 700;
}

.page-contact .pc-rail__list {
  margin: 0;
  display: flex;
  flex-direction: column;
}

.page-contact .pc-rail__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid var(--sb-line);
}

.page-contact .pc-rail__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .pc-rail__key {
  font-size: 12px;
  color: var(--sb-steel);
  letter-spacing: .06em;
}

.page-contact .pc-rail__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--sb-white);
}

.page-contact .pc-rail__val--mono {
  font-family: var(--sb-mono);
  letter-spacing: .01em;
  word-break: break-all;
}

.page-contact .pc-rail__hint {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--sb-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--sb-steel);
}

.page-contact .pc-index {
  padding: 16px clamp(16px, 2.4vw, 22px);
  border: 1px dashed var(--sb-line-strong);
  border-radius: var(--sb-r);
}

.page-contact .pc-index__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--sb-steel);
}

.page-contact .pc-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .pc-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 0;
  color: var(--sb-white);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--sb-ease);
}

.page-contact .pc-index__link:hover,
.page-contact .pc-index__link[data-current] {
  color: var(--sb-orange);
}

.page-contact .pc-index__num {
  font-family: var(--sb-mono);
  font-size: 11px;
  color: var(--sb-steel);
}

.page-contact .pc-index__link[data-current] .pc-index__num {
  color: var(--sb-orange);
}

/* ---------- 反馈步骤 ---------- */
.page-contact .pc-flow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.page-contact .pc-steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
  counter-reset: pcstep;
}

.page-contact .pc-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--sb-line);
}

.page-contact .pc-step:first-child {
  border-top: 0;
}

.page-contact .pc-step__num {
  font-family: var(--sb-mono);
  font-size: 13px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--sb-ink);
  background: var(--sb-grad);
  font-weight: 700;
  flex: none;
}

.page-contact .pc-step__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--sb-white);
}

.page-contact .pc-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sb-steel);
}

.page-contact .pc-flow__media {
  margin: 0;
  border: 1px solid var(--sb-line);
  border-radius: var(--sb-r-l);
  overflow: hidden;
  background: linear-gradient(200deg, rgba(29, 107, 255, .2), var(--sb-ink-2));
}

.page-contact .pc-flow__media .sb-media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 11 / 8;
  object-fit: cover;
}

.page-contact .pc-flow__media .sb-media__caption {
  padding: 12px clamp(14px, 2vw, 20px);
  border-top: 1px solid var(--sb-line);
  font-size: 12px;
  color: var(--sb-steel);
}

/* ---------- 响应时效 ---------- */
.page-contact .pc-timing {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--sb-line);
  border-radius: var(--sb-r-l);
  background:
    radial-gradient(120% 90% at 12% 10%, rgba(29, 107, 255, .2), transparent 62%),
    var(--sb-ink-2);
}

.page-contact .pc-timing__visual {
  position: relative;
  width: min(220px, 62vw);
  margin-inline: auto;
}

.page-contact .pc-ring {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 0 22px rgba(22, 224, 210, .22));
}

.page-contact .pc-ring__track { stroke: var(--sb-line); }
.page-contact .pc-ring__arc { stroke: url(#pcRingGrad); }

.page-contact .pc-ring__center {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 4px;
}

.page-contact .pc-ring__value {
  font-family: var(--sb-mono);
  font-size: clamp(24px, 6vw, 32px);
  font-weight: 700;
  color: var(--sb-white);
}

.page-contact .pc-ring__unit {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--sb-steel);
}

.page-contact .pc-timing__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .pc-timing__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sb-steel);
}

.page-contact .pc-timing__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--sb-cyan);
}

.page-contact .pc-timing__list strong {
  color: var(--sb-white);
}

.page-contact .pc-ticks {
  margin-top: 22px;
  height: 30px;
  background-image: repeating-linear-gradient(90deg, var(--sb-line-strong) 0 1px, transparent 1px 13px);
  border-bottom: 1px solid var(--sb-line);
}

/* ---------- 合作共建 ---------- */
.page-contact .pc-partner__head {
  max-width: 62ch;
}

.page-contact .pc-partner__head .sb-lede {
  max-width: 56ch;
}

.page-contact .pc-partner__grid {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-contact .pc-partner__card {
  padding: 22px clamp(16px, 2.2vw, 24px);
  border-radius: var(--sb-r);
  border: 1px solid var(--sb-line);
  border-top: 3px solid transparent;
  border-image: var(--sb-grad) 1;
  background: linear-gradient(180deg, rgba(29, 107, 255, .1), rgba(11, 18, 38, .9));
}

.page-contact .pc-partner__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 10px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--sb-ink);
  background: var(--sb-cyan);
  border-radius: 999px;
  font-weight: 700;
}

.page-contact .pc-partner__card .sb-h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.page-contact .pc-partner__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sb-steel);
}

.page-contact .pc-partner__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-top: clamp(22px, 3vw, 34px);
  padding-top: 20px;
  border-top: 1px solid var(--sb-line);
}

.page-contact .pc-partner__foot .sb-note {
  flex: 1 1 320px;
  margin: 0;
}

/* ---------- 提交前准备 ---------- */
.page-contact .pc-prep__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 44px);
  align-items: start;
}

.page-contact .pc-prep__body {
  padding: clamp(18px, 2.6vw, 28px);
  border-radius: var(--sb-r-l);
  border: 1px solid var(--sb-line);
  background: linear-gradient(150deg, rgba(22, 224, 210, .1), var(--sb-ink-2) 58%);
}

.page-contact .pc-prep {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-contact .pc-prep__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 12px;
  border-radius: var(--sb-r-s);
  transition: background .2s var(--sb-ease);
}

.page-contact .pc-prep__item:hover {
  background: rgba(231, 237, 249, .06);
}

.page-contact .pc-prep__box {
  width: 20px;
  height: 20px;
  margin: 1px 0 0;
  flex: none;
  accent-color: var(--sb-orange);
  cursor: pointer;
}

.page-contact .pc-prep__label {
  font-size: 15px;
  line-height: 1.7;
  color: var(--sb-white);
  cursor: pointer;
}

.page-contact .pc-prep__box:checked + .pc-prep__label {
  color: var(--sb-steel);
  text-decoration: line-through;
  text-decoration-color: rgba(22, 224, 210, .7);
}

.page-contact .pc-prep__hint {
  margin: 16px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--sb-orange);
  border-radius: 0 var(--sb-r-s) var(--sb-r-s) 0;
  background: rgba(255, 106, 26, .12);
  font-size: 14px;
  line-height: 1.7;
  color: var(--sb-white);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity .28s var(--sb-ease), transform .28s var(--sb-ease);
}

.page-contact .pc-prep:not(:has(.pc-prep__box:not(:checked))) + .pc-prep__hint {
  opacity: 1;
  transform: none;
}

/* ---------- 渠道信息 ---------- */
.page-contact .pc-channels {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--sb-line);
  border: 1px solid var(--sb-line);
  border-radius: var(--sb-r);
  overflow: hidden;
}

.page-contact .pc-channel {
  background: var(--sb-ink-2);
  padding: 20px clamp(16px, 2.4vw, 26px);
}

.page-contact .pc-channel__key {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--sb-steel);
}

.page-contact .pc-channel__val {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 600;
  color: var(--sb-white);
  word-break: break-all;
}

.page-contact .pc-channel__val--mono {
  font-family: var(--sb-mono);
}

.page-contact .pc-channel__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sb-steel);
}

/* ---------- 收口 ---------- */
.page-contact .pc-next {
  border-radius: var(--sb-r-l);
  padding: clamp(24px, 4vw, 44px);
  background:
    radial-gradient(110% 120% at 92% 0%, rgba(255, 106, 26, .18), transparent 58%),
    linear-gradient(140deg, rgba(29, 107, 255, .22), var(--sb-ink-2));
  border: 1px solid var(--sb-line);
}

.page-contact .pc-next__text .sb-h2 {
  margin-bottom: 10px;
}

.page-contact .pc-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-contact .pc-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--sb-line);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .pc-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .pc-timing {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  }

  .page-contact .pc-timing__visual {
    margin-inline: 0;
  }

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

  .page-contact .pc-flow__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-contact .pc-flow__media {
    margin-top: 26px;
  }

  .page-contact .pc-ticks {
    height: 42px;
  }
}

@media (min-width: 1000px) {
  .page-contact .pc-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-contact .pc-paths__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-contact .pc-paths__main {
    order: 1;
  }

  .page-contact .pc-rail {
    order: 2;
    position: sticky;
    top: calc(var(--sb-navbar-h) + 20px);
  }

  .page-contact .pc-flow__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-contact .pc-partner__grid {
    margin-top: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-tabs .sb-tabs__tab,
  .page-contact .pc-prep__hint,
  .page-contact .pc-prep__item {
    transition: none;
  }

  .page-contact .pc-tabs .sb-tabs__tab:hover {
    transform: none;
  }
}