.page-contact {
  --contact-panel-bg: #141218;
  --contact-rule: rgba(242, 239, 245, .14);
  padding-bottom: var(--step-6);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: var(--step-4);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-contact .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--line-strong);
}

.page-contact .breadcrumb a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- 首屏 ---------- */
.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0;
}

.page-contact .contact-hero {
  margin-top: var(--step-3);
  padding-top: var(--step-4);
  border-top: 1px solid var(--line);
  display: grid;
  gap: var(--step-4);
}

.page-contact .contact-hero__media {
  order: 2;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--contact-panel-bg);
}

.page-contact .contact-hero__text {
  order: 1;
}

.page-contact .contact-hero__title {
  font-size: clamp(40px, 9vw, 56px);
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: var(--step-2) 0 var(--step-3);
  color: var(--bone);
}

.page-contact .contact-hero__text .lede {
  font-size: 16px;
  line-height: 1.75;
  color: var(--bone);
  max-width: 42ch;
  margin: 0;
}

/* ---------- 客服通道 ---------- */
.page-contact .contact-reach {
  margin-top: var(--step-6);
  padding-top: var(--step-5);
  border-top: 1px solid var(--line);
}

.page-contact .section-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  letter-spacing: -.01em;
  color: var(--bone);
  margin: 0 0 var(--step-3);
}

.page-contact .section-head::before {
  content: "";
  flex: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(200, 16, 46, .16);
}

.page-contact .reach-grid {
  row-gap: var(--step-4);
}

.page-contact .reach-panel {
  position: relative;
  display: grid;
  gap: var(--step-3);
  padding: var(--step-4) var(--step-4) var(--step-4) calc(var(--step-4) + 6px);
  background: var(--contact-panel-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-contact .reach-panel::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--red), var(--red-glass));
}

.page-contact .reach-card {
  padding-bottom: var(--step-3);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .reach-card:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .reach-card .eyebrow {
  color: var(--mist);
  letter-spacing: .12em;
  margin-bottom: 8px;
}

.page-contact .reach-value {
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--cyan);
  word-break: break-all;
  margin: 0 0 12px;
}

.page-contact .reach-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-contact .copy-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--cyan);
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease;
}

.page-contact .copy-btn:hover {
  background: rgba(75, 240, 214, .09);
  border-color: var(--cyan);
}

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

.page-contact .copy-hint {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--amber);
  min-height: 1.2em;
}

.page-contact .reach-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 36ch;
}

/* ---------- 响应节奏 ---------- */
.page-contact .sla-wrap {
  height: 100%;
  padding: var(--step-4);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(155deg, rgba(58, 15, 23, .82), rgba(11, 10, 13, .92));
}

.page-contact .sla-wrap__title {
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--bone);
  margin: 10px 0 var(--step-4);
}

.page-contact .sla-scale {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--step-3);
}

.page-contact .sla-node {
  position: relative;
  padding-left: 30px;
  border-radius: 2px;
}

.page-contact .sla-node:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 20px;
  bottom: calc(-1 * var(--step-3) - 2px);
  width: 1px;
  background: var(--line-strong);
}

.page-contact .sla-node__bar {
  position: absolute;
  left: 0;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--cyan);
  background: transparent;
  transition: background .18s ease;
}

.page-contact .sla-node:hover .sla-node__bar,
.page-contact .sla-node:focus-visible .sla-node__bar {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(75, 240, 214, .16);
}

.page-contact .sla-node__label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--bone);
}

.page-contact .sla-node__note {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist);
  opacity: .6;
  transition: opacity .18s ease, color .18s ease;
}

.page-contact .sla-node:hover .sla-node__note,
.page-contact .sla-node:focus-visible .sla-node__note {
  opacity: 1;
  color: var(--bone);
}

.page-contact .sla-node:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

/* ---------- 提交建议 ---------- */
.page-contact .contact-brief {
  margin-top: var(--step-6);
  padding-top: var(--step-5);
  border-top: 1px solid var(--line);
}

.page-contact .contact-brief__head {
  max-width: 62ch;
}

.page-contact .contact-brief__head h2 {
  font-size: clamp(28px, 5.5vw, 40px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--bone);
  margin: 10px 0 14px;
}

.page-contact .contact-brief__lede {
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
  margin: 0;
}

.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: var(--step-4);
}

.page-contact .chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--mist);
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}

.page-contact .chip:hover {
  color: var(--bone);
  border-color: var(--line-strong);
}

.page-contact .chip[aria-pressed="true"] {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(75, 240, 214, .09);
}

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

.page-contact .contact-brief__body {
  margin-top: var(--step-4);
  display: grid;
  gap: var(--step-4);
}

.page-contact .contact-brief__media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--contact-panel-bg);
}

.page-contact .brief-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .brief-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: var(--step-3);
  background: var(--ink);
  transition: background .18s ease;
}

.page-contact .brief-item:hover {
  background: var(--contact-panel-bg);
}

.page-contact .brief-item.is-filtered-out {
  display: none;
}

.page-contact .brief-item__num {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--amber);
  padding-top: 4px;
}

.page-contact .brief-item__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--bone);
}

.page-contact .brief-status {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 地址与备案 ---------- */
.page-contact .contact-meta {
  margin-top: var(--step-6);
  padding: var(--step-4);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(6, 46, 43, .88), rgba(11, 10, 13, .92));
}

.page-contact .contact-meta__title {
  font-size: 20px;
  letter-spacing: -.01em;
  color: var(--bone);
  margin: 0 0 var(--step-4);
}

.page-contact .meta-strip {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .meta-cell {
  padding: var(--step-3);
  background: rgba(11, 10, 13, .55);
}

.page-contact .meta-cell--fold summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
  transition: color .18s ease;
}

.page-contact .meta-cell--fold summary::-webkit-details-marker {
  display: none;
}

.page-contact .meta-cell--fold summary::after {
  content: "+";
  margin-left: auto;
  color: var(--cyan);
  font-size: 14px;
  line-height: 1;
}

.page-contact .meta-cell--fold[open] summary::after {
  content: "\2212";
}

.page-contact .meta-cell--fold summary:hover,
.page-contact .meta-cell--fold summary:focus-visible {
  color: var(--bone);
}

.page-contact .meta-cell--fold summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

.page-contact .meta-cell__k {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-contact .meta-cell--fold .meta-cell__v {
  margin-top: 10px;
}

.page-contact .meta-cell__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--bone);
  word-break: break-all;
}

.page-contact .meta-cell__note {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 40ch;
}

/* ---------- 收尾 ---------- */
.page-contact .contact-tail {
  margin: var(--step-5) 0 0;
  padding-top: var(--step-4);
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 62ch;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .reach-value {
    font-size: 26px;
  }
}

@media (min-width: 760px) {
  .page-contact .meta-strip {
    grid-template-columns: 1.5fr 1fr 1fr;
  }

  .page-contact .meta-cell {
    padding: var(--step-3) var(--step-4);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: var(--step-6);
    align-items: center;
    padding-top: var(--step-5);
  }

  .page-contact .contact-hero__media {
    order: 1;
  }

  .page-contact .contact-hero__text {
    order: 2;
  }

  .page-contact .contact-hero__text .lede {
    font-size: 20px;
  }

  .page-contact .contact-brief__body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--step-5);
    align-items: start;
  }

  .page-contact .contact-brief__media {
    position: sticky;
    top: var(--step-5);
  }
}

@media (min-width: 1080px) {
  .page-contact .reach-grid {
    align-items: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-btn,
  .page-contact .chip,
  .page-contact .brief-item,
  .page-contact .sla-node__bar,
  .page-contact .sla-node__note,
  .page-contact .meta-cell--fold summary {
    transition: none;
  }
}