.page-contact {
  --desk-side: 318px;
  --desk-gap: clamp(28px, 4.4vw, 60px);
  background: var(--mist);
  color: var(--ink);
  font-family: var(--sans);
  padding-bottom: clamp(56px, 9vw, 112px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  background: var(--paper);
  border-bottom: 1px solid var(--ink);
  padding: clamp(18px, 3vw, 32px) 0 clamp(34px, 5.4vw, 64px);
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: clamp(20px, 3.4vw, 38px);
}

.page-contact .contact-hero__eyebrow {
  margin: 0;
  font-family: var(--mono-font);
  font-size: var(--step-1);
  letter-spacing: 0.14em;
  color: var(--clay);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-size: clamp(2rem, 6.6vw, 4.4rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 17ch;
}

.page-contact .contact-hero__lede {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: var(--step-3);
  line-height: 1.78;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .contact-hero__arrow {
  color: var(--grey);
  margin-left: 4px;
}

.page-contact .hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin: clamp(32px, 5vw, 56px) 0 0;
}

.page-contact .hero-meta__item {
  background: var(--mist);
  padding: 14px 16px 16px;
}

.page-contact .hero-meta dt {
  font-family: var(--mono-font);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  color: var(--grey);
}

.page-contact .hero-meta dd {
  margin: 7px 0 0;
  font-size: var(--step-3);
  font-weight: 800;
  letter-spacing: -0.01em;
}

/* ---------- 对接台：左窄右宽 ---------- */
.page-contact .contact-desk {
  display: grid;
  gap: clamp(32px, 5vw, 48px);
  padding-top: clamp(40px, 6vw, 76px);
}

.page-contact .contact-side,
.page-contact .desk-main {
  min-width: 0;
}

.page-contact .desk-main {
  display: grid;
  gap: clamp(48px, 7vw, 92px);
}

@media (min-width: 940px) {
  .page-contact .contact-desk {
    grid-template-columns: var(--desk-side) minmax(0, 1fr);
    gap: var(--desk-gap);
    align-items: start;
  }

  .page-contact .contact-side__inner {
    position: sticky;
    top: 96px;
  }
}

/* ---------- 联系方式卡 ---------- */
.page-contact .contact-card {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: clamp(20px, 3vw, 28px);
  box-shadow: 8px 8px 0 var(--rule);
}

.page-contact .contact-card__kicker {
  margin: 0;
  font-family: var(--mono-font);
  font-size: var(--step-1);
  letter-spacing: 0.16em;
  color: var(--forest);
  background: var(--lime);
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid var(--ink);
}

.page-contact .contact-card__title {
  margin: 16px 0 0;
  font-size: clamp(1.2rem, 4.6vw, 1.5rem);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-contact .channel-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.page-contact .channel {
  padding: 14px 0;
}

.page-contact .channel + .channel {
  border-top: 1px dashed var(--rule);
}

.page-contact .channel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-contact .channel__key {
  font-family: var(--mono-font);
  font-size: var(--step-1);
  letter-spacing: 0.1em;
  color: var(--grey);
}

.page-contact .channel__value {
  margin: 8px 0 0;
  font-size: var(--step-3);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.5;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .channel__value--mail {
  font-family: var(--mono-font);
  font-size: var(--step-2);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.page-contact .channel__value--tel {
  font-family: var(--mono-font);
  font-size: var(--step-3);
  letter-spacing: 0.04em;
}

.page-contact .channel__value--addr {
  font-size: var(--step-2);
  font-weight: 400;
  line-height: 1.72;
}

.page-contact .channel__copy {
  flex: 0 0 auto;
  padding: 4px 10px;
  font-family: var(--mono-font);
  font-size: var(--step-1);
  letter-spacing: 0.06em;
  color: var(--ink);
  background: var(--lime-soft);
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: background 160ms var(--ease), color 160ms var(--ease);
}

.page-contact .channel__copy:hover {
  background: var(--lime);
}

.page-contact .channel__copy[data-copied] {
  background: var(--ink);
  color: var(--lime);
  border-color: var(--ink);
}

.page-contact .contact-card__hours {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-size: var(--step-2);
  font-weight: 800;
}

.page-contact .contact-card__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 3px var(--lime-soft);
}

.page-contact .contact-card__note {
  margin: 14px 0 0;
  font-size: var(--step-2);
  line-height: 1.75;
  color: var(--grey);
}

.page-contact .contact-card__note a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--clay);
  padding-bottom: 1px;
}

.page-contact .contact-card__note a:hover {
  background: var(--lime-soft);
}

/* ---------- 区块标题 ---------- */
.page-contact .block-head {
  margin-bottom: clamp(22px, 3vw, 32px);
}

.page-contact .block-head__index {
  margin: 0;
  font-family: var(--mono-font);
  font-size: var(--step-1);
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-contact .block-head__title {
  margin: 10px 0 0;
  font-size: clamp(1.5rem, 4vw, 2.125rem);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.01em;
  max-width: 22ch;
}

.page-contact .block-head__text {
  margin: 12px 0 0;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--grey);
  max-width: 58ch;
}

/* ---------- 合作方向卡片 ---------- */
.page-contact .track-list {
  display: grid;
  gap: 18px;
}

.page-contact .track {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 4px solid var(--clay);
  padding: clamp(20px, 3vw, 30px);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-contact .track:hover {
  transform: translateY(-2px);
  border-color: var(--ink);
  box-shadow: 6px 6px 0 var(--rule);
}

.page-contact .track__type {
  margin: 0;
  font-family: var(--mono-font);
  font-size: var(--step-1);
  letter-spacing: 0.14em;
  color: var(--clay);
}

.page-contact .track__title {
  margin: 8px 0 0;
  font-size: clamp(1.2rem, 3.4vw, 1.6rem);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-contact .track__desc {
  margin: 12px 0 0;
  font-size: var(--step-3);
  line-height: 1.78;
  max-width: 60ch;
}

.page-contact .track__facts {
  margin: 20px 0 0;
  border-top: 1px solid var(--rule);
}

.page-contact .track__facts > div {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--rule);
}

.page-contact .track__facts > div:last-child {
  border-bottom: 0;
  padding-bottom: 2px;
}

.page-contact .track__facts dt {
  font-family: var(--mono-font);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  color: var(--grey);
  padding-top: 3px;
}

.page-contact .track__facts dd {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.72;
}

@media (max-width: 430px) {
  .page-contact .track__facts > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-contact .track__facts dt {
    padding-top: 0;
  }
}

/* ---------- 对接流程 ---------- */
.page-contact .flow-figure {
  margin: 0 0 clamp(24px, 3.4vw, 36px);
  border: 1px solid var(--ink);
  overflow: hidden;
}

.page-contact .flow-figure img {
  display: block;
  width: 100%;
  height: clamp(150px, 24vw, 260px);
  object-fit: cover;
}

.page-contact .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-contact .flow-list::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 24px;
  bottom: 42px;
  border-left: 1px dashed var(--clay);
  opacity: 0.6;
}

.page-contact .flow-step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 22px);
  padding: 16px 0;
}

.page-contact .flow-step__node {
  position: relative;
  z-index: 1;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--ink);
  background: var(--mist);
  font-family: var(--mono-font);
  font-size: var(--step-1);
  letter-spacing: 0.04em;
  transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .flow-step:hover .flow-step__node,
.page-contact .flow-step:focus-within .flow-step__node {
  background: var(--clay);
  border-color: var(--clay);
  color: var(--paper);
}

.page-contact .flow-step__title {
  margin: 8px 0 0;
  font-size: var(--step-4);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .flow-step__text {
  margin: 8px 0 0;
  font-size: var(--step-2);
  line-height: 1.76;
  max-width: 56ch;
}

.page-contact .flow-step__time {
  display: inline-block;
  margin-top: 10px;
  padding: 3px 9px;
  font-family: var(--mono-font);
  font-size: var(--step-1);
  letter-spacing: 0.06em;
  color: var(--forest);
  background: var(--lime-soft);
  border: 1px solid var(--rule);
}

/* ---------- 准备清单 ---------- */
.page-contact .prepare {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

@media (min-width: 720px) {
  .page-contact .prepare {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
    align-items: start;
    gap: clamp(28px, 4vw, 48px);
  }
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.page-contact .prep-list li {
  position: relative;
  padding: 13px 0 13px 32px;
  border-bottom: 1px dashed var(--rule);
  font-size: var(--step-2);
  line-height: 1.72;
}

.page-contact .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 13px;
  height: 13px;
  background: var(--lime);
  border: 1px solid var(--ink);
}

.page-contact .prepare-figure {
  margin: 0;
  border: 1px solid var(--ink);
  background: var(--paper);
  padding: 10px;
}

.page-contact .prepare-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-contact .prepare-figure figcaption {
  margin-top: 10px;
  font-size: var(--step-1);
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 常见问题 ---------- */
.page-contact .qa-list {
  border-top: 1px solid var(--rule);
}

.page-contact .qa {
  border-bottom: 1px solid var(--rule);
}

.page-contact .qa__summary {
  display: block;
  position: relative;
  padding: 16px 40px 16px 0;
  font-size: var(--step-3);
  font-weight: 800;
  line-height: 1.6;
  letter-spacing: -0.01em;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .qa__summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono-font);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--clay);
  line-height: 1;
}

.page-contact .qa[open] .qa__summary::after {
  content: "–";
}

.page-contact .qa[open] .qa__summary {
  color: var(--forest);
}

.page-contact .qa__body {
  padding: 0 0 18px;
}

.page-contact .qa__body p {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.8;
  color: var(--grey);
  max-width: 62ch;
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 480px) {
  .page-contact .contact-card {
    box-shadow: 5px 5px 0 var(--rule);
  }

  .page-contact .flow-step {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 14px;
  }

  .page-contact .flow-step__node {
    width: 36px;
    height: 36px;
  }

  .page-contact .flow-list::before {
    left: 17px;
  }

  .page-contact .prep-list li::before {
    top: 17px;
  }
}
<<<END>>>