.page-contact {
  --pc-gap: clamp(16px, 2.4vw, 30px);
  --pc-line: rgba(22, 69, 110, .72);
  --pc-card-bg: rgba(12, 39, 64, .66);
  display: block;
  color: var(--text);
}

/* 面包屑 */
.page-contact .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-contact .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--step-12);
  color: var(--text-dim);
}

.page-contact .breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-contact .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--ink-700);
}

.page-contact .breadcrumb-link {
  color: var(--text-dim);
  text-decoration: none;
  transition: color .18s ease;
}

.page-contact .breadcrumb-link:hover,
.page-contact .breadcrumb-link:focus-visible {
  color: var(--signal-soft);
}

/* 通用文本层级 */
.page-contact h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 7vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -.02em;
}

.page-contact h2 {
  margin: 0 0 12px;
  font-size: clamp(1.4rem, 4.2vw, 2.1rem);
  line-height: 1.16;
  letter-spacing: -.01em;
}

.page-contact h3 {
  margin: 0 0 10px;
  font-size: var(--step-20);
  line-height: 1.3;
}

.page-contact .lede {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
}

.page-contact .section-head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .inline-link {
  color: var(--signal-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 255, 217, .4);
  transition: color .18s ease, border-color .18s ease;
}

.page-contact .inline-link:hover,
.page-contact .inline-link:focus-visible {
  color: var(--signal);
  border-color: var(--signal);
}

.page-contact .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(24px, 4vw, 46px) clamp(44px, 6vw, 80px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -32%;
  right: -18%;
  width: min(580px, 92vw);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(0, 229, 176, .16), rgba(0, 229, 176, 0) 62%);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: -14%;
  bottom: -80px;
  width: 78%;
  height: 210px;
  border-radius: var(--r-xl);
  background: linear-gradient(112deg, rgba(22, 69, 110, .55), rgba(12, 39, 64, 0));
  transform: rotate(-3.5deg);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-contact .contact-hero__meta {
  margin: 18px 0 0;
  font-size: var(--step-12);
  letter-spacing: .08em;
  color: var(--text-dim);
}

.page-contact .media-frame {
  max-width: 100%;
  margin: 0;
}

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

.page-contact .contact-hero__media {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--pc-line);
  background: var(--ink-800);
}

/* 合作方向 */
.page-contact .tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 4px;
}

.page-contact .tab {
  appearance: none;
  border: 1px solid var(--pc-line);
  background: var(--glass);
  color: var(--text-dim);
  font: inherit;
  font-size: var(--step-14);
  line-height: 1;
  padding: .62rem 1.05rem;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-contact .tab:hover {
  color: var(--text);
  border-color: var(--ink-700);
}

.page-contact .tab[aria-selected="true"] {
  color: var(--ink-900);
  background: var(--signal);
  border-color: var(--signal);
  font-weight: 600;
  box-shadow: var(--shadow-signal);
}

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

.page-contact .tab-panel {
  margin-top: 18px;
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--pc-line);
  border-radius: var(--r-lg);
  background: var(--pc-card-bg);
}

.page-contact .tab-panel[hidden] {
  display: none;
}

.page-contact .track-title {
  position: relative;
  padding-left: 18px;
}

.page-contact .track-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .38em;
  width: 6px;
  height: 1.1em;
  border-radius: var(--r-pill);
  background: var(--flare);
}

.page-contact .track-lede {
  margin: 0 0 22px;
  font-size: var(--step-16);
  line-height: 1.7;
  color: var(--text-dim);
}

.page-contact .track-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

.page-contact .track-cell {
  padding-top: 14px;
  border-top: 1px solid rgba(22, 69, 110, .8);
}

.page-contact .track-label {
  margin: 0 0 6px;
  font-size: var(--step-12);
  letter-spacing: .14em;
  color: var(--signal);
}

.page-contact .track-cell p:last-child {
  margin: 0;
  font-size: var(--step-14);
  line-height: 1.75;
  color: var(--text-dim);
}

/* 联系方式 + 流程 */
.page-contact .desk-split {
  display: grid;
  gap: clamp(30px, 4.4vw, 50px);
}

.page-contact .contact-cards {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-contact .contact-card {
  position: relative;
  padding: 18px 20px;
  border: 1px solid var(--pc-line);
  border-radius: var(--r-lg);
  background: var(--glass);
  overflow: hidden;
}

.page-contact .contact-card--signal {
  border-color: rgba(0, 229, 176, .45);
  background: linear-gradient(150deg, rgba(0, 229, 176, .12), rgba(12, 39, 64, .7));
}

.page-contact .contact-card--signal::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: var(--signal);
}

.page-contact .contact-card__key {
  margin: 0 0 8px;
  font-size: var(--step-12);
  letter-spacing: .14em;
  color: var(--text-dim);
}

.page-contact .contact-card__val {
  margin: 0 0 10px;
  font-size: clamp(1.05rem, 3.4vw, 1.35rem);
  line-height: 1.35;
  color: var(--text);
  word-break: break-word;
}

.page-contact .contact-card__val--text {
  font-family: var(--font-sans);
  font-size: var(--step-16);
  line-height: 1.6;
}

.page-contact .contact-card__note {
  margin: 0;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--text-dim);
}

.page-contact .desk-foot {
  margin: 18px 0 0;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--text-dim);
}

/* 流程步骤条 */
.page-contact .flow {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow-step {
  position: relative;
  padding-left: 30px;
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 30px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--ink-700), rgba(22, 69, 110, 0));
}

.page-contact .flow-step:last-child::before {
  display: none;
}

.page-contact .flow-step details {
  border-bottom: 1px solid rgba(22, 69, 110, .65);
}

.page-contact .flow-step summary {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 0;
  list-style: none;
  cursor: pointer;
}

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

.page-contact .flow-step summary::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--signal);
  transition: background-color .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.page-contact .flow-step details[open] summary::before {
  background: var(--flare);
  border-color: var(--flare);
  box-shadow: 0 0 0 5px rgba(255, 122, 26, .16);
}

.page-contact .flow-step summary:focus-visible {
  outline: 2px solid var(--signal-soft);
  outline-offset: 4px;
}

.page-contact .flow-index {
  font-size: var(--step-12);
  letter-spacing: .1em;
  color: var(--flare-soft);
}

.page-contact .flow-title {
  font-size: var(--step-16);
  font-weight: 600;
  color: var(--text);
}

.page-contact .flow-body {
  margin: 0 0 16px;
  font-size: var(--step-14);
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .flow-media {
  margin-top: clamp(20px, 3vw, 30px);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--pc-line);
  background: var(--ink-800);
}

/* 两条线路 */
.page-contact .lane-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

.page-contact .lane {
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--r-lg);
  border: 1px solid var(--pc-line);
  background: var(--glass);
}

.page-contact .lane--signal {
  border-color: rgba(0, 229, 176, .45);
  background: linear-gradient(158deg, rgba(0, 229, 176, .13), rgba(12, 39, 64, .78));
}

.page-contact .lane--flare {
  border-color: rgba(255, 122, 26, .45);
  background: linear-gradient(158deg, rgba(255, 122, 26, .13), rgba(12, 39, 64, .78));
}

.page-contact .lane h3 {
  font-size: var(--step-20);
}

.page-contact .lane-list {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  font-size: var(--step-14);
  line-height: 1.65;
  color: var(--text-dim);
}

.page-contact .lane-list li {
  position: relative;
  padding-left: 20px;
}

.page-contact .lane-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 12px;
  height: 2px;
  border-radius: var(--r-pill);
  background: var(--signal);
}

.page-contact .lane--flare .lane-list li::before {
  background: var(--flare-soft);
}

.page-contact .lane-foot {
  margin: 0;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--text);
}

.page-contact .lane-foot .num {
  color: var(--signal-soft);
}

.page-contact .lane--flare .lane-foot .num {
  color: var(--flare-soft);
}

.page-contact .lanes-hint {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--text-dim);
}

/* 合作前准备 */
.page-contact .prep-wrap {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .prep-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .prep-list li {
  padding: 16px 20px;
  border: 1px solid rgba(22, 69, 110, .7);
  border-radius: var(--r-md);
  background: rgba(12, 39, 64, .55);
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--text-dim);
}

.page-contact .prep-list strong {
  display: block;
  margin-bottom: 5px;
  font-size: var(--step-16);
  font-weight: 600;
  color: var(--text);
}

.page-contact .prep-side {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--pc-line);
  border-radius: var(--r-lg);
  background: var(--pc-card-bg);
}

.page-contact .stat-row {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
  margin-bottom: 18px;
}

.page-contact .stat-row .stat {
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(22, 69, 110, .7);
}

.page-contact .stat-row .stat-value {
  font-family: var(--font-mono);
  font-size: var(--step-28);
  line-height: 1.1;
  color: var(--flare);
}

.page-contact .stat-row .stat-label {
  display: block;
  margin-top: 4px;
  font-size: var(--step-14);
  line-height: 1.6;
  color: var(--text-dim);
}

.page-contact .prep-note {
  margin: 0 0 20px;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--text-dim);
}

/* 响应式 */
@media (min-width: 640px) {
  .page-contact .contact-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .stat-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .track-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }

  .page-contact .lane-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .prep-wrap {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-contact .desk-split {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero {
    padding-block: clamp(30px, 4vw, 56px) clamp(56px, 6vw, 92px);
  }

  .page-contact .stat-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .tab,
  .page-contact .inline-link,
  .page-contact .flow-step summary::before {
    transition: none;
  }
}