.page-contact {
  --contact-card: rgba(27, 30, 40, .78);
  --contact-border: rgba(231, 180, 90, .28);
  --contact-glow: 0 0 26px rgba(53, 230, 210, .18);
  color: var(--jade);
}

.page-contact .breadcrumbs {
  padding-top: 22px;
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: 12px;
}

.page-contact .hero-grid {
  display: grid;
  gap: 28px;
}

.page-contact .hero-main {
  max-width: 64ch;
}

.page-contact h1 {
  margin: 14px 0 18px;
  font-size: clamp(32px, 5.6vw, 58px);
  line-height: 1.08;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--jade);
  background: linear-gradient(98deg, var(--jade) 0%, var(--gold-lift) 54%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.page-contact .hero-rail {
  padding: 18px 20px;
  border: 1px solid var(--contact-border);
  border-left-width: 3px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(27, 30, 40, .92), rgba(7, 8, 12, .58));
}

.page-contact .rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

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

.page-contact .rail-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--jade);
  font-size: 14px;
  text-decoration: none;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.page-contact .rail-list a:hover,
.page-contact .rail-list a:focus-visible {
  background: rgba(53, 230, 210, .09);
  border-left-color: var(--cyan);
  color: var(--cyan);
  outline: none;
}

.page-contact .rail-list .idx-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

.page-contact .contact-hero .stripe-band {
  margin-top: 40px;
}

/* ---------- 合作类型选项卡 ---------- */
.page-contact .track-tabs {
  margin-top: 32px;
}

.page-contact .track-tablist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--ink-800);
}

.page-contact .track-tab {
  appearance: none;
  display: grid;
  gap: 4px;
  padding: 14px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--mist);
  font: inherit;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}

.page-contact .track-tab .tab-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: inherit;
  opacity: .68;
}

.page-contact .track-tab:hover {
  border-color: var(--contact-border);
  color: var(--gold-lift);
}

.page-contact .track-tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #05201d;
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(53, 230, 210, .18);
}

.page-contact .track-tab:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-contact .track-panel {
  margin-top: 22px;
  padding: 26px 22px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-md);
  background: var(--ink-850);
}

.page-contact .panel-grid {
  display: grid;
  gap: 22px;
}

.page-contact .panel-cell h3 {
  margin: 0 0 10px;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--gold-lift);
}

.page-contact .panel-cell p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .panel-cell ul,
.page-contact .panel-cell ol {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .panel-cell li::marker {
  color: var(--gold);
  font-family: var(--font-mono);
}

.page-contact .panel-hint {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .panel-hint strong {
  color: var(--cyan);
  font-weight: 600;
}

.page-contact .page-contact-figure {
  margin: 36px 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

/* ---------- 需求提交 ---------- */
.page-contact .submit-grid {
  gap: 36px;
}

.page-contact .field-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .field-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--ink-800);
  transition: border-color .18s ease, box-shadow .18s ease;
}

.page-contact .field-row:hover {
  border-color: var(--contact-border);
  box-shadow: 0 0 0 1px rgba(231, 180, 90, .16);
}

.page-contact .field-idx {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-contact .field-row h3 {
  margin: 0 0 5px;
  font-size: 16px;
  color: var(--jade);
}

.page-contact .field-row p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .check-note {
  margin-top: 26px;
  padding: 20px 22px;
  border: 1px solid rgba(255, 138, 61, .34);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius-sm);
  background: rgba(255, 138, 61, .06);
}

.page-contact .check-note h3 {
  margin: 0 0 12px;
  font-size: 16px;
  color: var(--amber);
}

.page-contact .check-note ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 9px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .check-note li::marker {
  color: var(--amber);
}

/* ---------- 右侧客服面板 ---------- */
.page-contact .support-panel {
  display: grid;
  gap: 16px;
  align-content: start;
  margin-top: 12px;
}

.page-contact .support-card {
  padding: 22px;
  border: 1px solid var(--contact-border);
  border-radius: var(--radius-md);
  background: var(--contact-card);
  box-shadow: var(--shadow-hard);
  backdrop-filter: blur(6px);
}

.page-contact .support-card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  color: var(--jade);
}

.page-contact .support-card p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .support-card p:last-child {
  margin-bottom: 0;
}

.page-contact .mono-value {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
  word-break: break-all;
}

.page-contact .sla-card {
  border-color: rgba(53, 230, 210, .42);
}

.page-contact .sla-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 13px;
}

.page-contact .sla-line:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .sla-line b {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan);
  white-space: nowrap;
}

.page-contact .copy-btn {
  appearance: none;
  margin-top: 4px;
  padding: 8px 16px;
  border: 1px solid rgba(53, 230, 210, .5);
  border-radius: 999px;
  background: transparent;
  color: var(--cyan);
  font: inherit;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, box-shadow .18s ease;
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  background: rgba(53, 230, 210, .12);
  box-shadow: var(--contact-glow);
  outline: none;
}

.page-contact .copy-btn[data-copied] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #05201d;
}

/* ---------- 响应时效 ---------- */
.page-contact .sla-section {
  background: linear-gradient(180deg, rgba(18, 20, 28, .9), rgba(7, 8, 12, .4));
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .sla-grid {
  display: grid;
  gap: 30px;
  margin-top: 30px;
}

.page-contact .sla-fact {
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .sla-fact:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .sla-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.6vw, 34px);
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-contact .sla-fact p {
  margin: 10px 0 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

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

/* ---------- 联系信息 ---------- */
.page-contact .contact-rows {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .contact-rows .contact-row {
  display: grid;
  gap: 6px 18px;
  align-items: center;
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-sm);
  background: linear-gradient(100deg, rgba(27, 30, 40, .92), rgba(7, 8, 12, .5));
}

.page-contact .contact-rows .contact-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-contact .contact-rows .contact-value {
  font-size: 15px;
  color: var(--jade);
  overflow-wrap: anywhere;
}

.page-contact .contact-row .copy-btn {
  justify-self: start;
  margin-top: 0;
}

.page-contact .contact-foot {
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 常见问题 ---------- */
.page-contact .disclosure {
  margin-top: 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--ink-850);
  overflow: hidden;
  transition: border-color .18s ease;
}

.page-contact .disclosure:hover {
  border-color: var(--contact-border);
}

.page-contact .disclosure summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  color: var(--jade);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .disclosure summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
}

.page-contact .disclosure[open] summary::after {
  content: "−";
}

.page-contact .disclosure[open] summary {
  color: var(--gold-lift);
  border-bottom: 1px solid var(--line-soft);
}

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

.page-contact .disclosure-body {
  padding: 16px 20px 20px;
}

.page-contact .disclosure-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 图片通用 ---------- */
.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .track-tablist {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-contact .contact-rows .contact-row {
    grid-template-columns: 150px minmax(0, 1fr) auto;
  }

  .page-contact .contact-row .copy-btn {
    justify-self: end;
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: 56px;
    align-items: end;
  }

  .page-contact .sla-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
    gap: 48px;
  }
}

@media (min-width: 1024px) {
  .page-contact .submit-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
  }

  .page-contact .support-panel {
    position: sticky;
    top: 96px;
    margin-top: 0;
  }
}

@media (max-width: 520px) {
  .page-contact h1 {
    font-size: clamp(28px, 8.4vw, 36px);
  }

  .page-contact .track-panel {
    padding: 20px 16px;
  }

  .page-contact .support-card {
    padding: 18px 16px;
  }

  .page-contact .disclosure summary {
    padding: 16px 14px;
    font-size: 15px;
  }

  .page-contact .disclosure-body {
    padding: 14px;
  }
}