.page-contact {
  --contact-rule: 1px solid var(--line);
}

.page-contact *,
.page-contact *::before,
.page-contact *::after {
  box-sizing: border-box;
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: 36px 0 40px;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, var(--ink-800) 0%, var(--ink-900) 55%, var(--ink-950) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 0 100%);
  z-index: 0;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(to right, rgba(30, 81, 69, 0.3) 0 1px, transparent 1px 64px);
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-contact .display-hero {
  margin: 12px 0 18px;
  font-size: clamp(40px, 12vw, 92px);
  line-height: 0.9;
  letter-spacing: 0.01em;
}

.page-contact .contact-hero__lede .lead {
  max-width: 50ch;
  margin: 0;
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 24px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

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

/* ---------- 渠道铭牌 ---------- */

.page-contact .contact-board,
.page-contact .contact-scope,
.page-contact .contact-checklist,
.page-contact .contact-flow,
.page-contact .contact-identity,
.page-contact .contact-elsewhere {
  padding: 44px 0;
  border-top: var(--contact-rule);
}

.page-contact .board-grid {
  display: grid;
  margin-top: 28px;
  border: var(--contact-rule);
}

.page-contact .contact-plate {
  padding: 22px 20px;
  border-bottom: var(--contact-rule);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
}

.page-contact .contact-plate:last-child {
  border-bottom: 0;
}

.page-contact .contact-plate__key {
  margin: 0 0 12px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .contact-plate__value {
  margin: 0;
  font-family: var(--ff-mono);
  font-size: clamp(19px, 5vw, 29px);
  letter-spacing: -0.01em;
  color: var(--cyan);
  word-break: break-word;
}

.page-contact .contact-plate__value--addr {
  font-family: var(--ff-body);
  font-size: clamp(18px, 4.4vw, 23px);
  line-height: 1.5;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-contact .contact-plate__note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-board__foot {
  max-width: 78ch;
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: var(--contact-rule);
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 受理范围 ---------- */

.page-contact .scope-grid {
  row-gap: 30px;
}

.page-contact .scope-sub {
  margin: 0 0 16px;
  font-family: var(--ff-display);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .scope-sub--warn {
  color: var(--orange);
}

.page-contact .scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .scope-list li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-top: var(--contact-rule);
}

.page-contact .scope-idx {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-contact .scope-list strong {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .scope-list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .scope-out {
  padding: 20px 18px;
  border: 1px solid var(--orange-deep);
  background: rgba(255, 139, 61, 0.06);
}

.page-contact .scope-out ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .scope-out li {
  padding: 12px 0;
  border-top: 1px solid rgba(217, 106, 30, 0.45);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--paper);
}

.page-contact .scope-out li:first-child {
  border-top: 0;
  padding-top: 0;
}

/* ---------- 提问清单 ---------- */

.page-contact .check-grid {
  row-gap: 30px;
}

.page-contact .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .check-item {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 0;
  border-top: var(--contact-rule);
}

.page-contact .check-item:last-child {
  border-bottom: var(--contact-rule);
}

.page-contact .check-box {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  margin: 5px 0 0;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
}

.page-contact .check-box:checked {
  border-color: var(--cyan);
  background: var(--cyan);
  box-shadow: inset 0 0 0 3px var(--ink-900);
}

.page-contact .check-box:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 3px;
}

.page-contact .check-label {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 12px;
  cursor: pointer;
}

.page-contact .check-index {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .check-text {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .check-text strong {
  display: block;
  margin-bottom: 4px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .check-box:checked + .check-label .check-text {
  color: rgba(143, 169, 161, 0.55);
}

.page-contact .check-box:checked + .check-label .check-text strong {
  color: var(--muted);
}

.page-contact .check-media {
  margin: 0;
}

/* ---------- 处理顺序 ---------- */

.page-contact .flow-rail {
  display: grid;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--contact-rule);
}

.page-contact .flow-step {
  position: relative;
  padding: 18px 0;
  border-bottom: var(--contact-rule);
}

.page-contact .flow-code {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-contact .flow-step h3 {
  margin: 0 0 8px;
  font-family: var(--ff-display);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 站点身份 ---------- */

.page-contact .id-strip {
  display: grid;
  margin-top: 26px;
  border-top: var(--contact-rule);
}

.page-contact .id-cell {
  padding: 18px 0;
  border-bottom: var(--contact-rule);
  outline: none;
}

.page-contact .id-cell:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -1px;
}

.page-contact .id-key {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .id-val {
  margin: 0;
  font-family: var(--ff-mono);
  font-size: clamp(20px, 5vw, 26px);
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .id-note {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(143, 169, 161, 0.5);
  transition: color var(--ease);
}

.page-contact .id-cell:hover .id-note,
.page-contact .id-cell:focus .id-note {
  color: var(--cyan-soft);
}

/* ---------- 其他入口 ---------- */

.page-contact .entry-list {
  display: grid;
  gap: 1px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border: var(--contact-rule);
  background: var(--line);
}

.page-contact .entry-list a {
  display: block;
  padding: 20px;
  border-left: 2px solid transparent;
  background: var(--ink-900);
  text-decoration: none;
  transition: background var(--ease), border-color var(--ease);
}

.page-contact .entry-list a:hover,
.page-contact .entry-list a:focus-visible {
  background: var(--ink-800);
  border-left-color: var(--cyan);
}

.page-contact .entry-key {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-contact .entry-title {
  display: block;
  margin-bottom: 8px;
  font-family: var(--ff-display);
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-contact .entry-desc {
  display: block;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 桌面与中等屏 ---------- */

@media (min-width: 760px) {
  .page-contact .flow-rail {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .flow-step {
    padding: 22px 20px 26px;
    border-bottom: 0;
    border-right: var(--contact-rule);
  }

  .page-contact .flow-step:last-child {
    border-right: 0;
  }

  .page-contact .flow-step::before {
    content: "";
    position: absolute;
    top: -4.5px;
    left: 20px;
    width: 8px;
    height: 8px;
    background: var(--ink-900);
    border: 1px solid var(--cyan);
  }

  .page-contact .id-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .id-cell {
    padding: 20px;
    border-bottom: var(--contact-rule);
    border-right: var(--contact-rule);
  }

  .page-contact .id-cell:nth-child(2n) {
    border-right: 0;
  }

  .page-contact .entry-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding: 56px 0 66px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: 62fr 38fr;
    gap: 40px;
    align-items: start;
  }

  .page-contact .contact-hero__media {
    margin-top: -14px;
  }

  .page-contact .board-grid {
    grid-template-columns: 38fr 22fr 40fr;
  }

  .page-contact .contact-plate {
    padding: 30px 26px;
    border-bottom: 0;
    border-right: var(--contact-rule);
  }

  .page-contact .contact-plate:last-child {
    border-right: 0;
  }

  .page-contact .check-media {
    align-self: start;
  }
}

@media (min-width: 1080px) {
  .page-contact .id-strip {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .id-cell:nth-child(2n) {
    border-right: var(--contact-rule);
  }

  .page-contact .id-cell:last-child {
    border-right: 0;
  }

  .page-contact .entry-list {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .entry-list a,
  .page-contact .id-note {
    transition: none;
  }
}