.page-contact {
  background: var(--ink-900);
  color: var(--cream-100);
  overflow-x: hidden;
}

/* ============ 面包屑 ============ */
.page-contact__crumbs {
  padding-top: 112px;
  padding-bottom: 8px;
}
@media (min-width: 900px) {
  .page-contact__crumbs {
    padding-top: 156px;
  }
}

/* ============ 首屏 ============ */
.page-contact__hero {
  position: relative;
  padding: 24px 0 72px;
}
.page-contact__hero::before {
  content: "";
  position: absolute;
  inset: -10% -20% auto auto;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle at 65% 35%, rgba(122, 75, 208, 0.34), rgba(122, 75, 208, 0) 68%);
  pointer-events: none;
  z-index: 0;
}
.page-contact__hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
@media (min-width: 900px) {
  .page-contact__hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
  }
}
.page-contact__hero-copy .eyebrow {
  margin-bottom: 18px;
}
.page-contact__hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1.08;
  font-size: clamp(36px, 7.4vw, 76px);
  margin: 0 0 22px;
  color: var(--cream-100);
}
.page-contact__lead {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(243, 235, 218, 0.82);
  max-width: 62ch;
  margin: 0 0 28px;
}
.page-contact__hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}
.page-contact__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.page-contact__hero-media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(160deg, var(--panel-600) 0%, var(--ink-700) 100%);
  box-shadow: 0 30px 70px -40px rgba(122, 75, 208, 0.7);
}
.page-contact__hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

/* ============ 通用区块头部 ============ */
.page-contact__section-head {
  max-width: 780px;
  margin-bottom: 44px;
}
.page-contact__section-head .eyebrow {
  margin-bottom: 14px;
}
.page-contact__section-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1.16;
  font-size: clamp(26px, 4.6vw, 44px);
  margin: 0 0 16px;
  color: var(--cream-100);
}
.page-contact__section-note {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(243, 235, 218, 0.72);
  margin: 0;
}

/* ============ 三条通道 ============ */
.page-contact__channels {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--ink-700) 0%, var(--ink-900) 100%);
}
.page-contact__channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}
@media (min-width: 760px) {
  .page-contact__channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}
.page-contact__channel {
  position: relative;
  padding: 34px 28px 30px;
  border-radius: var(--radius-md);
  background: rgba(30, 26, 43, 0.72);
  border: 1px solid var(--line-400);
  border-top-width: 3px;
  overflow: hidden;
}
.page-contact__channel--purple {
  border-top-color: var(--purple-500);
}
.page-contact__channel--gold {
  border-top-color: var(--gold-500);
}
.page-contact__channel--emerald {
  border-top-color: var(--emerald-500);
}
.page-contact__channel-num {
  display: block;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--violet-muted);
  margin-bottom: 14px;
}
.page-contact__channel h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: 0.03em;
  margin: 0 0 14px;
  color: var(--cream-100);
}
.page-contact__channel p {
  font-size: 15px;
  line-height: 1.78;
  margin: 0 0 16px;
  color: rgba(243, 235, 218, 0.78);
}
.page-contact__channel-value {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.01em;
  color: var(--gold-300);
  word-break: break-all;
  margin: 0 0 10px;
}
.page-contact__channel .muted {
  font-size: 13px;
  color: var(--violet-muted);
  margin: 0;
}
.page-contact__link {
  color: var(--gold-300);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 39, 0.5);
  padding-bottom: 2px;
}
.page-contact__link:hover,
.page-contact__link:focus-visible {
  color: var(--cream-100);
  border-bottom-color: var(--cream-100);
}

/* ============ 镜像对照 ============ */
.page-contact__feedback {
  padding: 84px 0 92px;
  background: var(--ink-900);
}
.page-contact__mirror {
  margin-top: 8px;
}
.page-contact__mirror-visual {
  margin: 0 0 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: radial-gradient(circle at 50% 50%, rgba(201, 162, 39, 0.1), rgba(11, 10, 15, 0.95) 70%);
}
.page-contact__mirror-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.page-contact__mirror-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
}
@media (min-width: 900px) {
  .page-contact__mirror-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 0;
    align-items: stretch;
  }
}
.page-contact__mirror-panel {
  min-width: 0;
}
@media (min-width: 900px) {
  .page-contact__mirror-panel--left {
    padding-right: 44px;
  }
  .page-contact__mirror-panel--right {
    padding-left: 44px;
    border-left: 1px solid var(--gold-500);
    box-shadow: inset 1px 0 0 rgba(201, 162, 39, 0.16);
  }
}
.page-contact__mirror-panel .eyebrow {
  margin-bottom: 12px;
}
.page-contact__mirror-panel h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3vw, 26px);
  letter-spacing: 0.02em;
  line-height: 1.3;
  margin: 0 0 18px;
  color: var(--cream-100);
}
.page-contact__mirror-panel p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 235, 218, 0.78);
  margin: 0 0 16px;
}
.page-contact__mirror-panel .muted {
  color: var(--violet-muted);
}
.page-contact__mirror-link {
  margin-top: 6px;
}

.page-contact__type-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.page-contact__type-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(243, 235, 218, 0.82);
}
.page-contact__type-list strong {
  color: var(--cream-100);
  font-weight: 700;
}
.page-contact__type-list .tag {
  flex-shrink: 0;
}

.page-contact__ticket {
  padding: 22px 24px;
  border-radius: var(--radius-md);
  background: var(--panel-600);
  border-left: 3px solid var(--emerald-500);
}
.page-contact__ticket .eyebrow {
  display: block;
  margin-bottom: 10px;
}
.page-contact__ticket-id {
  font-size: 22px;
  letter-spacing: 0.06em;
  color: var(--emerald-500);
  margin: 0 0 10px;
  font-variant-numeric: tabular-nums;
}
.page-contact__ticket p.muted {
  font-size: 13.5px;
  line-height: 1.7;
  margin: 0;
  color: var(--violet-muted);
}

.page-contact__file-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  border-top: 1px solid var(--line-400);
}
.page-contact__file-list li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-400);
  font-size: 14px;
  color: var(--cream-100);
}
.page-contact__file-list .mono {
  word-break: break-all;
}
.page-contact__file-list .muted {
  color: var(--gold-300);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  align-self: center;
}

/* ============ 合作方向 ============ */
.page-contact__coop {
  padding: 84px 0;
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-700) 100%);
}
.page-contact__coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 780px) {
  .page-contact__coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.page-contact__coop-card {
  padding: 30px 26px 28px;
  border-radius: var(--radius-md);
  background: rgba(21, 18, 30, 0.9);
  border: 1px solid var(--line-400);
  min-width: 0;
}
.page-contact__coop-card--a {
  box-shadow: 0 -3px 0 var(--purple-500) inset;
}
.page-contact__coop-card--b {
  box-shadow: 0 -3px 0 var(--gold-500) inset;
}
.page-contact__coop-card--c {
  box-shadow: 0 -3px 0 var(--emerald-500) inset;
}
.page-contact__coop-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold-300);
  margin-bottom: 16px;
}
.page-contact__coop-card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.4;
  letter-spacing: 0.02em;
  margin: 0 0 16px;
  color: var(--cream-100);
}
.page-contact__coop-card p {
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(243, 235, 218, 0.76);
  margin: 0 0 12px;
}
.page-contact__coop-card p:last-child {
  margin-bottom: 0;
}
.page-contact__coop-card strong {
  color: var(--cream-100);
  font-weight: 700;
}
.page-contact__coop-card .muted {
  color: var(--violet-muted);
}

/* ============ 推进四步 ============ */
.page-contact__path {
  padding: 84px 0;
  background: var(--ink-700);
}
.page-contact__path-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: path;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.page-contact__path-item {
  border-radius: var(--radius-md);
  background: rgba(30, 26, 43, 0.66);
  border: 1px solid var(--line-400);
  overflow: hidden;
}
.page-contact__path-item details {
  padding: 0;
}
.page-contact__path-item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
  padding: 22px 26px;
  cursor: pointer;
  list-style: none;
  transition: background 200ms var(--ease-out);
}
.page-contact__path-item summary::-webkit-details-marker {
  display: none;
}
.page-contact__path-item summary:hover {
  background: rgba(122, 75, 208, 0.08);
}
.page-contact__path-num {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--gold-500);
  flex-shrink: 0;
}
.page-contact__path-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.02em;
  color: var(--cream-100);
  flex: 1 1 auto;
  position: relative;
  padding-right: 28px;
}
.page-contact__path-title::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--violet-muted);
  transition: transform 200ms var(--ease-out);
}
.page-contact__path-item details[open] .page-contact__path-title::after {
  transform: translateY(-50%) rotate(45deg);
  color: var(--gold-300);
}
.page-contact__path-meta {
  font-size: 13px;
  flex-shrink: 0;
  color: var(--violet-muted);
}
.page-contact__path-body {
  padding: 0 26px 24px;
  border-top: 1px solid var(--line-400);
  margin-top: 0;
  padding-top: 18px;
}
.page-contact__path-body p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 235, 218, 0.78);
  margin: 0 0 12px;
}
.page-contact__path-body p.muted {
  color: var(--violet-muted);
  font-size: 14px;
  margin-bottom: 0;
}

/* ============ 联系信息 ============ */
.page-contact__info {
  padding: 88px 0 104px;
  background: var(--ink-900);
}
.page-contact__info-band {
  position: relative;
  padding: 46px 30px 38px;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, rgba(30, 26, 43, 0.95) 0%, rgba(11, 10, 15, 0.98) 100%);
  border: 1px solid var(--line-400);
  overflow: hidden;
}
.page-contact__info-band::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--purple-500), var(--gold-500) 55%, var(--orange-500));
}
@media (min-width: 900px) {
  .page-contact__info-band {
    padding: 56px 56px 48px;
  }
}
.page-contact__info-head {
  margin-bottom: 32px;
}
.page-contact__info-head .eyebrow {
  margin-bottom: 12px;
}
.page-contact__info-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 38px);
  letter-spacing: 0.03em;
  margin: 0;
  color: var(--cream-100);
}
.page-contact__info-list {
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
@media (min-width: 720px) {
  .page-contact__info-list {
    grid-template-columns: 1fr 1fr;
    gap: 0 48px;
  }
}
.page-contact__info-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-400);
}
.page-contact__info-row dt {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--violet-muted);
}
.page-contact__info-row dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--cream-100);
  word-break: break-word;
}
.page-contact__info-note {
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(243, 235, 218, 0.72);
  max-width: 72ch;
  margin: 0 0 28px;
}
.page-contact__info-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============ 窄屏与可访问性 ============ */
@media (max-width: 559px) {
  .page-contact__hero {
    padding-top: 8px;
  }
  .page-contact__hero-tags {
    gap: 8px;
  }
  .page-contact__channel,
  .page-contact__coop-card {
    padding-left: 22px;
    padding-right: 22px;
  }
  .page-contact__ticket-id {
    font-size: 18px;
    word-break: break-all;
  }
  .page-contact__path-title {
    font-size: 17px;
  }
  .page-contact__info-band {
    padding: 34px 22px 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact__path-item summary,
  .page-contact__path-title::after {
    transition: none;
  }
}
</main>