.page-contact {
  --contact-gap: clamp(16px, 2.4vw, 26px);
  --contact-card-bg: var(--char);
}

/* ============ 封面层 ============ */
.page-contact .contact-cover {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(48px, 10vw, 104px) 0 clamp(40px, 7vw, 76px);
  border-bottom: 1px solid var(--hair);
}

.page-contact .contact-cover__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-contact .contact-cover__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.46;
  filter: saturate(0.65) contrast(1.05);
}

.page-contact .contact-cover__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 78% 4%, rgba(242, 169, 59, 0.18), transparent 58%),
    linear-gradient(180deg, rgba(7, 9, 12, 0.44) 0%, rgba(7, 9, 12, 0.88) 64%, var(--night) 100%);
}

.page-contact .contact-cover__inner {
  display: grid;
  gap: 18px;
  align-content: end;
  min-height: clamp(340px, 46vw, 520px);
}

.page-contact .contact-cover h1 {
  margin: 0;
  font-size: var(--step-cover);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 18ch;
}

.page-contact .contact-cover .lede {
  margin: 0;
  max-width: 62ch;
  color: var(--silver);
  font-size: 1.02rem;
  line-height: 1.78;
}

.page-contact .cover-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

/* ============ 来意分流 ============ */
.page-contact .section-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(24px, 4vw, 42px);
}

.page-contact .section-note {
  margin: 0;
  max-width: 46ch;
  color: var(--silver);
  font-size: 0.94rem;
  line-height: 1.75;
}

.page-contact .intent-grid {
  display: grid;
  gap: var(--contact-gap);
}

.page-contact .intent-card {
  position: relative;
  border: 1px solid var(--gold-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(242, 169, 59, 0.08), rgba(16, 20, 26, 0.94) 48%);
  overflow: hidden;
  transition: border-color 240ms var(--ease), transform 240ms var(--ease);
}

.page-contact .intent-card:hover {
  border-color: rgba(242, 169, 59, 0.55);
}

.page-contact .intent-trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 14px;
  width: 100%;
  padding: 24px 22px 22px;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-contact .intent-no {
  display: block;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-contact .intent-body {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.page-contact .intent-title {
  display: block;
  font-size: clamp(1.2rem, 2.4vw, 1.64rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .intent-hint {
  display: block;
  color: var(--silver);
  font-size: 0.94rem;
  line-height: 1.7;
}

.page-contact .expand-sign {
  position: relative;
  flex: none;
  width: 26px;
  height: 26px;
  margin-top: 4px;
  border: 1px solid var(--gold-line);
  border-radius: 50%;
}

.page-contact .expand-sign::before,
.page-contact .expand-sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--gold);
  transform: translate(-50%, -50%);
  transition: transform 240ms var(--ease), opacity 240ms var(--ease);
}

.page-contact .expand-sign::before {
  width: 11px;
  height: 1.5px;
}

.page-contact .expand-sign::after {
  width: 1.5px;
  height: 11px;
}

.page-contact .expand-trigger[aria-expanded="true"] .expand-sign::after {
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(0);
}

.page-contact .intent-panel {
  padding: 0 22px 24px 60px;
}

.page-contact .intent-panel p {
  margin: 0 0 14px;
  color: var(--silver);
  font-size: 0.95rem;
  line-height: 1.78;
}

.page-contact .mini-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .mini-list li {
  position: relative;
  padding-left: 20px;
  color: var(--paper);
  font-size: 0.92rem;
  line-height: 1.66;
}

.page-contact .mini-list li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.66em;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--cyan);
}

/* ============ 联系渠道 ============ */
.page-contact .channel-grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

.page-contact .channel-stack {
  display: grid;
  gap: var(--contact-gap);
  align-content: start;
}

.page-contact .channel-card {
  position: relative;
  padding: 24px 22px;
  border: 1px solid var(--hair);
  border-radius: var(--radius-md);
  background: var(--contact-card-bg);
}

.page-contact .channel-card--gold {
  border-color: var(--gold-line);
  background: linear-gradient(150deg, rgba(242, 169, 59, 0.1), rgba(16, 20, 26, 0.94) 56%);
}

.page-contact .channel-card--gold::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--gold-lift), var(--gold-deep));
}

.page-contact .channel-key {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .channel-value {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(0.98rem, 1.9vw, 1.18rem);
  line-height: 1.5;
  color: var(--paper);
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 1px solid transparent;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}

.page-contact a.channel-value:hover {
  color: var(--gold-lift);
  border-bottom-color: var(--gold);
}

.page-contact .channel-note {
  margin: 14px 0 0;
  color: var(--silver);
  font-size: 0.92rem;
  line-height: 1.76;
}

/* 反馈信息清单 */
.page-contact .carry-block {
  padding-top: 6px;
}

.page-contact .carry-title {
  margin: 12px 0 10px;
  font-size: clamp(1.3rem, 2.8vw, 1.86rem);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .carry-lede {
  margin: 0 0 24px;
  color: var(--silver);
  font-size: 0.96rem;
  line-height: 1.78;
  max-width: 52ch;
}

.page-contact .carry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 3px;
}

.page-contact .carry-list li {
  position: relative;
  display: grid;
  gap: 5px;
  padding: 16px 0 16px 30px;
  border-top: 1px solid var(--hair);
}

.page-contact .carry-list li:last-child {
  border-bottom: 1px solid var(--hair);
}

.page-contact .carry-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 22px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(242, 169, 59, 0.13);
}

.page-contact .carry-list strong {
  color: var(--paper);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.5;
}

.page-contact .carry-list span {
  color: var(--silver);
  font-size: 0.9rem;
  line-height: 1.72;
}

/* ============ 合作 ============ */
.page-contact .partner-grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-contact .partner-lead p {
  margin: 16px 0 24px;
  max-width: 44ch;
  color: var(--silver);
  font-size: 0.98rem;
  line-height: 1.78;
}

.page-contact .partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--hair);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-contact .partner-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 22px 20px;
  background: var(--night);
}

.page-contact .partner-no {
  display: block;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--violet);
}

.page-contact .partner-list h3 {
  margin: 0 0 7px;
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--paper);
  line-height: 1.4;
}

.page-contact .partner-list p {
  margin: 0;
  color: var(--silver);
  font-size: 0.92rem;
  line-height: 1.76;
}

/* ============ 处理流程 ============ */
.page-contact .process-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(30px, 5vw, 48px);
  max-width: 68ch;
}

.page-contact .process-head .lede {
  margin: 0;
  color: var(--silver);
  font-size: 0.98rem;
  line-height: 1.78;
}

.page-contact .process-track {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 0;
}

.page-contact .process-track::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold-line), rgba(242, 169, 59, 0.05));
}

.page-contact .process-step {
  position: relative;
  padding: 0 0 30px 32px;
}

.page-contact .process-step:last-child {
  padding-bottom: 0;
}

.page-contact .process-node {
  position: absolute;
  left: -4.5px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(242, 169, 59, 0.14);
  transition: box-shadow 220ms var(--ease), background 220ms var(--ease);
}

.page-contact .process-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--gold-deep);
}

.page-contact .process-title {
  margin: 6px 0 8px;
  font-size: 1.14rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .process-desc {
  margin: 0;
  max-width: 46ch;
  color: var(--silver);
  font-size: 0.92rem;
  line-height: 1.76;
}

.page-contact .process-figure {
  margin: clamp(30px, 5vw, 48px) 0 0;
  border: 1px solid var(--hair);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--night);
}

.page-contact .process-figure img {
  display: block;
  width: 100%;
  height: clamp(180px, 26vw, 260px);
  object-fit: cover;
  object-position: center;
  opacity: 0.82;
}

.page-contact .process-figure .media-frame__caption {
  display: block;
  padding: 14px 18px;
  border-top: 1px solid var(--hair);
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  line-height: 1.6;
}

/* ============ 收束 ============ */
.page-contact .closing-inner {
  display: grid;
  gap: 24px;
}

.page-contact .closing-inner h2 {
  margin: 0;
  max-width: 26ch;
}

.page-contact .closing-links {
  display: grid;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-contact .closing-link {
  display: grid;
  gap: 6px;
  padding: 20px 20px;
  background: var(--night);
  text-decoration: none;
  transition: background 220ms var(--ease);
}

.page-contact .closing-link:hover {
  background: var(--char-2);
}

.page-contact .closing-link__title {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--paper);
  line-height: 1.35;
}

.page-contact .closing-link__desc {
  color: var(--silver);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-contact .closing-link__title::after {
  content: " →";
  color: var(--gold);
  font-weight: 400;
}

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-contact .closing-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .section-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 30ch);
    align-items: end;
    gap: 24px;
  }
}

@media (min-width: 820px) {
  .page-contact .intent-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px 22px;
  }

  .page-contact .intent-card:nth-child(1) {
    grid-column: 1 / span 5;
  }

  .page-contact .intent-card:nth-child(2) {
    grid-column: 7 / span 6;
    margin-top: 40px;
  }

  .page-contact .intent-card:nth-child(3) {
    grid-column: 3 / span 8;
    margin-top: -8px;
  }

  .page-contact .process-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }

  .page-contact .process-track::before {
    left: 12px;
    right: 14px;
    top: 5px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--gold-line), rgba(242, 169, 59, 0.42) 46%, rgba(242, 169, 59, 0.06));
  }

  .page-contact .process-step {
    padding: 32px 8px 0 0;
  }

  .page-contact .process-node {
    left: 12px;
    top: 1px;
  }

  .page-contact .process-index {
    padding-left: 0;
  }

  .page-contact .process-desc {
    max-width: 30ch;
  }

  .page-contact .partner-list li {
    padding: 26px 26px;
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-contact .channel-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

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

  .page-contact .closing-inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: 40px;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-cover__inner {
    gap: 22px;
  }

  .page-contact .intent-panel {
    padding-left: 62px;
  }

  .page-contact .process-figure img {
    height: 300px;
  }
}

@media (min-width: 1400px) {
  .page-contact .intent-card:nth-child(1) {
    grid-column: 1 / span 5;
  }

  .page-contact .intent-card:nth-child(2) {
    grid-column: 6 / span 7;
    margin-top: 52px;
  }

  .page-contact .intent-card:nth-child(3) {
    grid-column: 2 / span 9;
  }
}

@media (hover: hover) {
  .page-contact .intent-card:hover .intent-title {
    color: var(--gold-lift);
  }

  .page-contact .process-step:hover .process-node {
    background: var(--cyan);
    box-shadow: 0 0 0 6px rgba(56, 225, 208, 0.16);
  }

  .page-contact .process-step:hover .process-desc {
    color: var(--paper);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .intent-card,
  .page-contact .intent-trigger,
  .page-contact .expand-sign::before,
  .page-contact .expand-sign::after,
  .page-contact .channel-value,
  .page-contact .process-node,
  .page-contact .closing-link {
    transition: none;
  }
}
</main>