.page-contact {
  --pc-accent-soft: rgba(31, 164, 99, 0.42);
  --pc-rail-line: rgba(31, 164, 99, 0.35);
  padding-bottom: 72px;
}

.page-contact .shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: 18px;
}

.page-contact .crumbs {
  margin: 20px 0 26px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  max-width: 46rem;
  padding-bottom: 34px;
}

.page-contact .contact-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 7.2vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper);
  text-wrap: balance;
}

.page-contact .contact-hero__title::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  margin-top: 18px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--pitch), var(--amber));
}

.page-contact .contact-hero__lede {
  margin: 20px 0 0;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 38rem;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 左右分置布局 ---------- */
.page-contact .contact-layout {
  display: grid;
  gap: 34px;
}

.page-contact .contact-body {
  display: grid;
  gap: 52px;
  min-width: 0;
}

/* ---------- 渠道卡 ---------- */
.page-contact .contact-aside {
  min-width: 0;
}

.page-contact .channel-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.page-contact .channel-card__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-contact .channel-card__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
  filter: saturate(0.75);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(172deg, rgba(11, 21, 38, 0.5) 0%, rgba(11, 21, 38, 0.92) 58%, rgba(11, 21, 38, 0.98) 100%);
}

.page-contact .channel-card__body {
  padding: 24px 20px 22px;
}

.page-contact .channel-card__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--paper);
}

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

.page-contact .channel-item {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left: 3px solid var(--pitch);
  border-radius: var(--radius-sm);
  padding: 15px 16px 17px;
  transition: transform 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}

.page-contact .channel-item:nth-child(2) {
  border-left-color: var(--amber);
}

.page-contact .channel-item:nth-child(3) {
  border-left-color: var(--card-yellow);
}

.page-contact .channel-item:hover,
.page-contact .channel-item:focus-within {
  transform: translateY(-3px);
  background: var(--ink-700);
  border-color: var(--line-strong);
  border-left-color: inherit;
}

.page-contact .channel-item__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-contact .channel-item__value {
  margin: 7px 0 8px;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .channel-item__use {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
  transition: color 0.25s ease;
}

.page-contact .channel-item:hover .channel-item__use,
.page-contact .channel-item:focus-within .channel-item__use {
  color: var(--paper);
}

.page-contact .channel-card__foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--score);
}

/* ---------- 提交前准备 ---------- */
.page-contact .brief-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .brief-item {
  position: relative;
  overflow: hidden;
  padding: 20px 18px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--ink-850);
}

.page-contact .brief-item::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--pc-accent-soft), transparent 70%);
  pointer-events: none;
}

.page-contact .brief-num {
  display: block;
  font-size: 30px;
  line-height: 1;
  color: var(--score);
  opacity: 0.55;
}

.page-contact .brief-item h3 {
  margin: 12px 0 8px;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .brief-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 咨询类型 ---------- */
.page-contact .ask-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .ask-item {
  display: grid;
  gap: 9px;
  align-content: start;
  padding: 18px 18px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(8px);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-contact .ask-item:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.page-contact .ask-item .tag {
  justify-self: start;
}

.page-contact .ask-item h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .ask-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--muted);
}

/* ---------- 处理流程 ---------- */
.page-contact .steps {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 4px 0 0;
}

.page-contact .steps::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 18px;
  bottom: 28px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--pc-rail-line), rgba(31, 164, 99, 0.05));
}

.page-contact .step {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 24px;
}

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

.page-contact .step__dot {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--pitch);
  color: var(--score);
  font-size: 13px;
}

.page-contact .step__body h3 {
  margin: 5px 0 7px;
  font-size: 1rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .step__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .step.is-current .step__dot {
  background: var(--pitch);
  border-color: var(--score);
  color: var(--ink-900);
}

/* ---------- 内容建议与合作 ---------- */
.page-contact .collab__grid {
  display: grid;
  gap: 24px;
}

.page-contact .collab__text p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .collab-list {
  list-style: none;
  margin: 20px 0 22px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .collab-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .collab-list .mono {
  display: inline-block;
  min-width: 3.4em;
  margin-right: 10px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-contact .collab__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-contact .collab__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-contact .collab__media .media__caption {
  margin: 0;
  padding: 12px 16px;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------- 到访条 ---------- */
.page-contact .visit-strip {
  display: grid;
  gap: 14px;
  margin-top: 56px;
  padding: 22px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  border-left: 4px solid var(--amber);
  background: linear-gradient(100deg, rgba(255, 180, 61, 0.09), rgba(18, 34, 56, 0.9) 42%);
}

.page-contact .visit-strip__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-contact .visit-strip__body h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .visit-strip__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 相关入口 ---------- */
.page-contact .contact-more {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-more__label {
  margin: 0 0 16px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-contact .contact-more__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .contact-more__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 14.5px;
  color: var(--paper);
  text-decoration: none;
  transition: background-color 0.22s ease, border-color 0.22s ease;
}

.page-contact .contact-more__link .mono {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--pitch);
}

.page-contact .contact-more__link:hover,
.page-contact .contact-more__link:focus-visible {
  background: var(--glass);
  border-color: var(--line-strong);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .shell {
    padding-inline: 26px;
  }

  .page-contact .brief-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .ask-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channel-card__body {
    padding: 28px 26px 26px;
  }

  .page-contact .visit-strip {
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: start;
    padding: 26px 28px;
  }

  .page-contact .contact-more__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact {
    padding-bottom: 96px;
  }

  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 350px) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-contact .contact-aside {
    position: sticky;
    top: 96px;
  }

  .page-contact .contact-body {
    gap: 64px;
  }

  .page-contact .collab__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    gap: 34px;
    align-items: center;
  }

  .page-contact .section__title {
    max-width: 26ch;
  }
}

@media (min-width: 1200px) {
  .page-contact .shell {
    padding-inline: 34px;
  }

  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
    gap: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-item,
  .page-contact .ask-item,
  .page-contact .contact-more__link {
    transition: none;
  }

  .page-contact .channel-item:hover,
  .page-contact .ask-item:hover {
    transform: none;
  }
}