.page-contact {
  --pc-gap: clamp(56px, 8vw, 112px);
  --pc-panel-pad: clamp(26px, 4.6vw, 56px);
  padding-bottom: 0;
  background:
    radial-gradient(92% 42% at 86% -6%, rgba(53, 242, 208, .09), transparent 62%),
    radial-gradient(70% 34% at 8% 4%, rgba(255, 122, 51, .055), transparent 60%),
    var(--c-pitch);
  color: var(--c-lamp);
}

/* ---------- 首屏 ---------- */
.page-contact .hero {
  padding-top: calc(var(--header-h) + 44px);
  padding-bottom: 4px;
}

.page-contact .hero .crumbs {
  margin-bottom: clamp(28px, 5vw, 52px);
}

.page-contact .hero .eyebrow {
  margin: 0 0 14px;
}

.page-contact .hero-title {
  margin: 0 0 clamp(18px, 3vw, 30px);
  font-size: clamp(44px, 8vw, 128px);
  max-width: 12ch;
}

.page-contact .hero-lede {
  margin: 0 0 clamp(34px, 5vw, 60px);
}

.page-contact .hero-figure {
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-contact .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* ---------- 通用节间距 ---------- */
.page-contact .section {
  margin-top: var(--pc-gap);
}

.page-contact .section-lede {
  margin: 18px 0 clamp(30px, 4vw, 48px);
}

/* ---------- 通道卡片 ---------- */
.page-contact .channels {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .channel {
  position: relative;
  padding: 26px 22px 24px 34px;
  border: 1px solid var(--c-grid);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(18, 58, 48, .88), rgba(6, 26, 21, .92));
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 28px;
  bottom: 28px;
  width: 4px;
  border-radius: 4px;
  background: var(--c-grid);
  transition: background .2s var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  border-color: var(--c-neon);
  transform: translateY(-2px);
}

.page-contact .channel:hover::before,
.page-contact .channel:focus-within::before {
  background: var(--c-neon);
}

.page-contact .channel-name {
  margin: 0 0 10px;
  color: var(--c-lamp);
}

.page-contact .channel-desc {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-contact .channel-more {
  border-top: 1px solid var(--c-grid);
  padding-top: 14px;
}

.page-contact .channel-more summary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-neon);
}

.page-contact .channel-more summary::-webkit-details-marker {
  display: none;
}

.page-contact .channel-more summary::before {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--c-neon);
  transition: color .2s var(--ease);
}

.page-contact .channel-more[open] summary::before {
  content: "－";
  color: var(--c-whistle);
}

.page-contact .channel-list-items {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-contact .channel-list-items li {
  position: relative;
  padding-left: 18px;
}

.page-contact .channel-list-items li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-neon);
  opacity: .72;
}

/* ---------- 大号联系方式面板 ---------- */
.page-contact .contact-panel {
  display: grid;
  gap: 26px;
  padding: var(--pc-panel-pad);
  border: 1px solid var(--c-grid);
  border-radius: var(--radius-card);
  background: var(--c-room);
}

.page-contact .contact-unit-label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-contact .contact-unit-value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(17px, 4.8vw, 21px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--c-neon);
  word-break: break-word;
}

.page-contact .contact-note {
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--c-grid);
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}

/* ---------- 勘误准备 ---------- */
.page-contact .fix-grid {
  display: grid;
  gap: 30px;
  margin-top: clamp(24px, 4vw, 44px);
}

.page-contact .check-list {
  list-style: none;
  margin: 26px 0 22px;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .check-list li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-mist);
}

.page-contact .check-list li::before {
  content: "";
  width: 20px;
  height: 20px;
  margin-top: 5px;
  border: 1px solid var(--c-neon);
  border-radius: 6px;
  background: rgba(53, 242, 208, .08);
}

.page-contact .check-list strong {
  color: var(--c-lamp);
  font-weight: 600;
}

.page-contact .fix-figure {
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-contact .fix-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 7;
  object-fit: cover;
}

/* ---------- 合作通道 ---------- */
.page-contact .coop-list {
  list-style: none;
  margin: clamp(24px, 4vw, 44px) 0 0;
  padding: 0;
}

.page-contact .coop-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  padding: 28px 0;
  border-top: 1px solid var(--c-grid);
}

.page-contact .coop-item:last-child {
  border-bottom: 1px solid var(--c-grid);
}

.page-contact .coop-index {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-grid);
  transition: color .2s var(--ease);
}

.page-contact .coop-item:hover .coop-index {
  color: var(--c-neon);
}

.page-contact .coop-body h3 {
  margin: 0 0 10px;
  color: var(--c-lamp);
}

.page-contact .coop-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mist);
}

/* ---------- 来信地址 ---------- */
.page-contact .post-block {
  margin-top: clamp(24px, 4vw, 44px);
  padding: var(--pc-panel-pad);
  border-radius: var(--radius-card);
  border: 1px solid var(--c-grid);
  background: linear-gradient(140deg, rgba(18, 58, 48, .8), rgba(6, 26, 21, .95));
}

.page-contact .post-label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-contact .post-address {
  margin: 14px 0 22px;
  max-width: 20ch;
  font-size: clamp(21px, 3.6vw, 34px);
  font-weight: 600;
  line-height: 1.42;
  letter-spacing: -0.02em;
  color: var(--c-lamp);
}

.page-contact .post-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mist);
  max-width: 68ch;
}

/* ---------- 处理节奏 ---------- */
.page-contact .flow-list {
  list-style: none;
  margin: clamp(24px, 4vw, 44px) 0 0;
  padding: 0;
}

.page-contact .flow-list li {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 18px;
  padding: 26px 0;
  border-top: 1px solid var(--c-grid);
}

.page-contact .flow-list li:last-child {
  border-bottom: 1px solid var(--c-grid);
}

.page-contact .flow-index {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-whistle);
}

.page-contact .flow-body h3 {
  margin: 0 0 8px;
  color: var(--c-lamp);
}

.page-contact .flow-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mist);
  max-width: 66ch;
}

/* ---------- 页尾海岸线 ---------- */
.page-contact .coastline {
  margin-top: clamp(56px, 9vw, 118px);
  line-height: 0;
}

.page-contact .coastline svg {
  display: block;
  width: 100%;
  height: clamp(110px, 17vw, 210px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .channel {
    padding: 30px 26px 26px 36px;
  }

  .page-contact .contact-panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 30px 48px;
  }

  .page-contact .contact-note {
    grid-column: 1 / -1;
  }

  .page-contact .contact-unit-value {
    font-size: clamp(26px, 3.4vw, 32px);
  }
}

@media (min-width: 960px) {
  .page-contact .fix-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 60px;
    align-items: start;
  }

  .page-contact .coop-item {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 28px;
    padding: 34px 0;
  }

  .page-contact .coop-index {
    font-size: 28px;
  }

  .page-contact .post-address {
    max-width: 18ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel::before,
  .page-contact .coop-index {
    transition: border-color .2s linear, background .2s linear, color .2s linear;
  }

  .page-contact .channel:hover,
  .page-contact .channel:focus-within {
    transform: none;
  }
}