/* ===== 反馈与合作 · page-contact ===== */
.page-contact {
  --ct-ink: #14202E;
  --ct-ink-soft: #46586A;
  padding-bottom: 112px;
}

.page-contact .bp-crumbs {
  margin: 26px 0 44px;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  padding-bottom: 62px;
  border-bottom: 1px solid var(--bp-line);
}

.page-contact .ct-hero__title {
  margin: 16px 0 22px;
  font-family: var(--bp-sans);
  font-weight: 900;
  font-size: clamp(36px, 8.4vw, 68px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--bp-paper);
}

.page-contact .ct-hero__lead {
  color: var(--bp-gray);
  max-width: 40em;
}

.page-contact .ct-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-contact .ct-hero__media {
  margin: 0;
}

.page-contact .ct-hero__media .bp-media__img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--bp-line);
  border-radius: var(--bp-r);
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-contact .ct-hero {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 60px;
    align-items: end;
  }
}

/* ---------- 章节头 ---------- */
.page-contact .ct-sec {
  padding-top: 78px;
}

.page-contact .ct-sec__head {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  margin-bottom: 34px;
}

.page-contact .ct-sec__no {
  display: block;
  font-family: var(--bp-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--bp-hot);
  padding-top: 10px;
}

.page-contact .ct-sec__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 4.6vw, 38px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--bp-paper);
}

.page-contact .ct-sec__desc {
  margin: 0;
  max-width: 46em;
  color: var(--bp-gray);
  font-size: 16.5px;
  line-height: 1.78;
}

.page-contact .ct-sec__link {
  color: var(--bp-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 720px) {
  .page-contact .ct-sec__head {
    grid-template-columns: 66px 1fr;
    gap: 20px;
  }
}

/* ---------- 两栏骨架 ---------- */
.page-contact .ct-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

@media (min-width: 900px) {
  .page-contact .ct-split {
    grid-template-columns: 1.42fr 1fr;
    gap: 62px;
  }
}

/* ---------- 联系信息行 ---------- */
.page-contact .ct-desk {
  border-top: 1px solid var(--bp-line);
}

.page-contact .ct-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 24px 0;
  border-bottom: 1px solid var(--bp-line);
}

.page-contact .ct-row__k {
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--bp-anno);
  padding-top: 6px;
}

.page-contact .ct-row__v {
  margin: 0 0 10px;
  font-family: var(--bp-mono);
  font-size: clamp(19px, 3.6vw, 28px);
  line-height: 1.28;
  color: var(--bp-cyan);
  overflow-wrap: anywhere;
}

.page-contact .ct-row__v--addr {
  font-family: var(--bp-sans);
  font-size: clamp(17px, 2.5vw, 21px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--bp-paper);
}

.page-contact .ct-row__d {
  margin: 0 0 12px;
  color: var(--bp-gray);
  font-size: 15.5px;
  line-height: 1.75;
}

@media (min-width: 720px) {
  .page-contact .ct-row {
    grid-template-columns: 116px 1fr;
    gap: 28px;
  }
}

/* ---------- 侧栏指引 ---------- */
.page-contact .ct-aside {
  padding: 26px 24px 12px;
  border: 1px solid var(--bp-line);
  border-left: 3px solid var(--bp-cyan);
  border-radius: var(--bp-r);
  background: linear-gradient(180deg, rgba(11, 23, 41, 0.92), rgba(5, 11, 24, 0.55));
}

.page-contact .ct-aside__title {
  margin: 0 0 16px;
  font-size: 17px;
  font-weight: 800;
  color: var(--bp-paper);
}

.page-contact .ct-aside__item {
  display: block;
  padding: 16px 0;
  border-top: 1px solid var(--bp-line);
  text-decoration: none;
}

.page-contact .ct-aside__item:last-child {
  padding-bottom: 18px;
}

.page-contact .ct-aside__k {
  display: block;
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--bp-cyan);
}

.page-contact .ct-aside__d {
  display: block;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--bp-gray);
}

.page-contact .ct-aside__item:hover .ct-aside__k,
.page-contact .ct-aside__item:focus-visible .ct-aside__k {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ---------- 编号清单 ---------- */
.page-contact .ct-check {
  counter-reset: ctstep;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--bp-line);
}

.page-contact .ct-check li {
  counter-increment: ctstep;
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--bp-line);
}

.page-contact .ct-check li::before {
  content: counter(ctstep, decimal-leading-zero);
  font-family: var(--bp-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--bp-hot);
  padding-top: 4px;
}

.page-contact .ct-check__k {
  display: block;
  margin-bottom: 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--bp-paper);
}

.page-contact .ct-check__d {
  display: block;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--bp-gray);
}

.page-contact .ct-check__media {
  margin: 0;
}

.page-contact .ct-check__media .bp-media__img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--bp-line);
  border-radius: var(--bp-r);
  object-fit: cover;
}

@media (min-width: 720px) {
  .page-contact .ct-check li {
    grid-template-columns: 54px 1fr;
    gap: 20px;
  }
}

/* ---------- 合作方向横滑带 ---------- */
.page-contact .ct-coop {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding: 6px 2px 24px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-contact .ct-coop__card {
  flex: 0 0 274px;
  scroll-snap-align: start;
  padding: 18px 22px 22px;
  border: 1px solid rgba(20, 32, 46, 0.16);
  border-radius: var(--bp-r);
  background: var(--bp-paper);
  color: var(--ct-ink);
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.page-contact .ct-coop__card:hover,
.page-contact .ct-coop__card:focus-within {
  transform: translateY(-4px);
  border-color: var(--bp-hot);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.38);
}

.page-contact .ct-coop__sum {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-height: 44px;
  padding: 6px 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--ct-ink);
  cursor: pointer;
  list-style: none;
}

.page-contact .ct-coop__sum::-webkit-details-marker {
  display: none;
}

.page-contact .ct-coop__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--bp-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--bp-hot);
  transition: transform 0.25s ease;
}

.page-contact .ct-coop__card[open] .ct-coop__sum::after {
  transform: rotate(45deg);
}

.page-contact .ct-coop__idx {
  font-family: var(--bp-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--bp-teal);
}

.page-contact .ct-coop__body {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ct-ink-soft);
}

@media (min-width: 720px) {
  .page-contact .ct-coop__card {
    flex: 0 0 322px;
  }
}

/* ---------- 时效与到访 ---------- */
.page-contact .ct-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-contact .ct-meta__block {
  padding-top: 20px;
  border-top: 2px solid var(--bp-teal);
}

.page-contact .ct-meta__block:last-child {
  border-top-color: var(--bp-hot);
}

.page-contact .ct-meta__title {
  margin: 8px 0 14px;
  font-size: 22px;
  font-weight: 800;
  color: var(--bp-paper);
}

.page-contact .ct-meta__block p {
  margin: 0 0 14px;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--bp-gray);
}

.page-contact .ct-meta__block a {
  color: var(--bp-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .ct-meta__block p.ct-meta__addr {
  font-family: var(--bp-mono);
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--bp-mist);
  overflow-wrap: anywhere;
}

@media (min-width: 860px) {
  .page-contact .ct-meta {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-coop__card,
  .page-contact .ct-coop__sum::after {
    transition: none;
  }
  .page-contact .ct-coop__card:hover,
  .page-contact .ct-coop__card:focus-within {
    transform: none;
  }
}