.page-contact {
  --pc-shadow: 6px 6px 0 rgba(0, 0, 0, .42);
  --pc-gap: 18px;
  padding-bottom: 72px;
}

.page-contact .breadcrumb {
  flex-wrap: wrap;
  padding-top: 22px;
  margin-bottom: 20px;
}

/* ---------- 首屏说明 ---------- */
.page-contact .contact-intro {
  padding-bottom: 26px;
  border-bottom: 1px solid var(--grid);
}

.page-contact .contact-intro__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 6.2vw, 44px);
  line-height: 1.16;
  letter-spacing: -.6px;
  color: var(--paper);
  max-width: 20ch;
}

.page-contact .contact-intro__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 5:7 联系卡与目的树 ---------- */
.page-contact .contact-split {
  display: grid;
  gap: var(--pc-gap);
  margin-top: 28px;
}

.page-contact .contact-split > * {
  min-width: 0;
}

.page-contact .contact-card {
  position: relative;
  background: var(--panel);
  border: 3px solid var(--grid);
  box-shadow: var(--pc-shadow);
  padding: 20px 20px 22px;
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  top: -3px;
  right: -3px;
  width: 58px;
  height: 6px;
  background: var(--cyan);
}

.page-contact .contact-card__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--cyan);
}

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

.page-contact .fact {
  padding-top: 13px;
  border-top: 1px solid var(--grid);
}

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

.page-contact .fact__label {
  margin: 0 0 5px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--steel);
}

.page-contact .fact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-contact .fact__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .fact__value--text {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.62;
  color: var(--paper);
}

/* ---------- 目的树 ---------- */
.page-contact .purpose {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .purpose__figure {
  margin: 0;
  border: 3px solid var(--grid);
  background: var(--panel-2);
  box-shadow: var(--pc-shadow);
  overflow: hidden;
}

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

.page-contact .purpose__hint {
  margin: 0;
  padding-left: 12px;
  border-left: 3px solid var(--amber);
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .purpose__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .purpose__node {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "idx name"
    ".   desc";
  gap: 4px 12px;
  padding: 14px 16px;
  background: var(--panel-2);
  border: 2px solid var(--grid);
  border-left: 5px solid var(--steel);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease),
              background var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.page-contact .purpose__node:hover,
.page-contact .purpose__node:focus-visible {
  background: var(--panel);
  border-color: var(--cyan);
  border-left-color: var(--cyan);
  transform: translateX(3px);
  outline: none;
}

.page-contact .purpose__idx {
  grid-area: idx;
  font-size: 12px;
  color: var(--amber);
  align-self: center;
}

.page-contact .purpose__name {
  grid-area: name;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: .01em;
}

.page-contact .purpose__desc {
  grid-area: desc;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 准备清单 ---------- */
.page-contact .prep-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--grid);
  border: 2px solid var(--grid);
}

.page-contact .prep-item {
  position: relative;
  background: var(--ink-900);
  padding: 20px 20px 22px;
  transition: background var(--dur) var(--ease);
}

.page-contact .prep-item:hover {
  background: var(--ink-800);
}

.page-contact .prep-item__idx {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-contact .prep-item__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .prep-item__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 响应节奏 ---------- */
.page-contact .channel-grid {
  display: grid;
  gap: 24px;
  margin-top: 26px;
}

.page-contact .channel-figure {
  margin: 0;
  border: 3px solid var(--grid);
  background: var(--ink-900);
  box-shadow: var(--pc-shadow);
  overflow: hidden;
}

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

.page-contact .channel-figure figcaption {
  padding: 10px 14px;
  border-top: 2px solid var(--grid);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-contact .timeline {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}

.page-contact .timeline__item {
  position: relative;
  padding: 0 0 20px 24px;
  border-left: 2px solid var(--grid);
}

.page-contact .timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .timeline__item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 5px;
  width: 10px;
  height: 10px;
  background: var(--cyan);
}

.page-contact .timeline__item:last-child::before {
  background: var(--amber);
}

.page-contact .timeline__time {
  margin: 0 0 5px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-contact .timeline__item:last-child .timeline__time {
  color: var(--amber);
}

.page-contact .timeline__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--muted);
}

/* ---------- 合作类型 ---------- */
.page-contact .coop-grid {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-contact .coop-card {
  background: var(--panel-2);
  border: 2px solid var(--grid);
  border-top: 5px solid var(--amber);
  padding: 22px 20px 20px;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .coop-card:hover {
  background: var(--panel);
  border-color: var(--cyan);
}

.page-contact .coop-card__tag {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--amber);
}

.page-contact .coop-card__title {
  margin: 0 0 12px;
  font-family: var(--font-editorial);
  font-size: 22px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .coop-card__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.74;
  color: var(--muted);
}

.page-contact .coop-card__meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 合作流程 ---------- */
.page-contact .flow {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 3px solid var(--grid);
}

.page-contact .flow__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .flow__track {
  margin-top: 16px;
}

.page-contact .flow__track svg {
  display: block;
  width: 100%;
  height: 12px;
}

.page-contact .flow__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .flow__step {
  padding-left: 16px;
  border-left: 3px solid var(--grid);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .flow__step:hover {
  border-left-color: var(--cyan);
}

.page-contact .flow__num {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  color: var(--amber);
}

.page-contact .flow__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .flow__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 站点信息带 ---------- */
.page-contact .info-band {
  display: grid;
  gap: 24px;
  padding: 24px 20px;
  background: var(--panel-2);
  border: 2px solid var(--grid);
  border-left: 6px solid var(--cyan);
}

.page-contact .info-band__brand {
  margin: 10px 0 6px;
  font-family: var(--font-editorial);
  font-size: 22px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .info-band__icp {
  margin: 0;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--muted);
}

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

.page-contact .info-links a {
  display: block;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--grid);
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.6;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .info-links a:hover,
.page-contact .info-links a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .purpose__list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 760px) {
  .page-contact .prep-list {
    grid-template-columns: 1fr 1fr;
  }

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

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

@media (min-width: 900px) {
  .page-contact .contact-split {
    grid-template-columns: 5fr 7fr;
    gap: 24px;
    align-items: start;
  }

  .page-contact .channel-grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
    gap: 30px;
  }

  .page-contact .coop-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .page-contact .flow__list {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .info-band {
    grid-template-columns: 5fr 7fr;
    align-items: start;
    padding: 28px 26px;
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-intro__lede {
    font-size: 17px;
  }

  .page-contact .fact__value {
    font-size: 15px;
  }
}
<<<END>>>