/* ================= 合作与联系 /contact ================= */
.page-contact {
  --cp-gap: clamp(14px, 1.8vw, 22px);
  --cp-pad: clamp(20px, 2.4vw, 30px);
  --cp-radius: 6px;
  --cp-rail: 26px;
}

/* ---------- 首屏框景 ---------- */
.page-contact .contact-hero__frame {
  position: relative;
  display: grid;
  gap: 16px;
  padding: clamp(28px, 4.2vw, 54px) clamp(22px, 3.6vw, 52px) clamp(32px, 4.6vw, 56px);
  overflow: hidden;
}

.page-contact .contact-hero__glow {
  position: absolute;
  top: -180px;
  right: -150px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(122, 92, 255, .3), transparent 68%);
  filter: blur(56px);
  pointer-events: none;
}

.page-contact .contact-hero__title {
  position: relative;
  max-width: 18ch;
  margin: 0;
}

.page-contact .contact-hero__lede {
  position: relative;
  max-width: 64ch;
  margin: 0;
}

.page-contact .contact-hero__cta {
  position: relative;
  margin-top: 6px;
}

/* ---------- 主体：目录导轨 + 内容列 ---------- */
.page-contact .contact-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-contact .contact-rail {
  display: none;
}

.page-contact .contact-flow {
  min-width: 0;
}

@media (min-width: 1024px) {
  .page-contact .contact-body {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
    align-items: start;
  }

  .page-contact .contact-rail {
    display: block;
    position: sticky;
    top: 128px;
    align-self: start;
  }
}

.page-contact .toc__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--line);
}

.page-contact .toc__list a {
  display: block;
  margin-left: -1px;
  padding: 9px 0 9px 16px;
  border-left: 1px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .toc__list a:hover,
.page-contact .toc__list a[aria-current="true"] {
  color: var(--warm);
  border-left-color: var(--purple);
}

/* ---------- 通道卡 ---------- */
.page-contact .way-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--cp-gap);
  margin-top: clamp(24px, 3vw, 40px);
}

@media (min-width: 880px) {
  .page-contact .way-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 3.4fr);
    align-items: start;
  }

  .page-contact .way-card--email {
    transform: translateY(-12px);
  }
}

.page-contact .way-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 11px;
  padding: var(--cp-pad);
  border: 1px solid var(--line);
  border-radius: var(--cp-radius);
  background: linear-gradient(180deg, rgba(18, 26, 49, .96), rgba(10, 16, 36, .96));
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-contact .way-card::before,
.page-contact .way-card::after {
  content: "";
  position: absolute;
  width: 15px;
  height: 15px;
  pointer-events: none;
  transition: opacity .25s var(--ease);
  opacity: .75;
}

.page-contact .way-card::before {
  top: 0;
  left: 0;
  border-top: 2px solid var(--purple-soft);
  border-left: 2px solid var(--purple-soft);
  border-top-left-radius: var(--cp-radius);
}

.page-contact .way-card::after {
  right: 0;
  bottom: 0;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  border-bottom-right-radius: var(--cp-radius);
}

.page-contact .way-card:hover {
  border-color: rgba(169, 155, 255, .6);
}

.page-contact .way-card:hover::before,
.page-contact .way-card:hover::after {
  opacity: 1;
}

.page-contact .way-card--email {
  border-color: rgba(122, 92, 255, .58);
  box-shadow: 0 0 0 1px rgba(122, 92, 255, .1), 0 26px 56px -40px rgba(122, 92, 255, .9);
}

.page-contact .way-card--email::before {
  border-top-color: var(--purple);
  border-left-color: var(--purple);
}

.page-contact .way-card__index {
  margin: 0;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--purple-soft);
}

.page-contact .way-card h3 {
  margin: 0;
}

.page-contact .way-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .way-card__value {
  margin: 4px 0 0;
  padding: 12px 14px;
  border: 1px dashed rgba(122, 92, 255, .36);
  border-radius: 4px;
  background: rgba(122, 92, 255, .07);
  font-size: clamp(12px, 1.1vw, 13px);
  line-height: 1.65;
  color: var(--gold);
  overflow-wrap: anywhere;
}

.page-contact .way-card__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .contact-media {
  margin: clamp(26px, 3.6vw, 44px) 0 0;
}

/* ---------- 合作方向 ---------- */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--cp-gap);
  margin-top: clamp(24px, 3vw, 38px);
}

@media (min-width: 720px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .coop-card {
  position: relative;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: var(--cp-pad);
  border: 1px solid var(--line);
  border-radius: var(--cp-radius);
  background: var(--panel);
  overflow: hidden;
  transition: border-color .25s var(--ease);
}

.page-contact .coop-card::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--purple), var(--cyan));
  opacity: 0;
  transition: opacity .25s var(--ease);
}

.page-contact .coop-card:hover {
  border-color: rgba(169, 155, 255, .46);
}

.page-contact .coop-card:hover::before {
  opacity: 1;
}

.page-contact .coop-card__num {
  margin: 0;
  font-size: 24px;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-contact .coop-card h3 {
  margin: 0;
}

.page-contact .coop-card > p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .coop-card > p.coop-card__out {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin: 4px 0 0;
  padding-top: 13px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--warm);
}

/* ---------- 邮件模板 ---------- */
.page-contact .contact-mail {
  margin-top: clamp(24px, 3vw, 38px);
  align-items: start;
}

.page-contact .mail-panel {
  display: grid;
  gap: 12px;
  padding: var(--cp-pad);
  border: 1px solid var(--line);
  border-radius: var(--cp-radius);
  background: var(--panel);
  min-width: 0;
}

.page-contact .mail-panel__label {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .mail-line {
  margin: 0;
  padding: 12px 14px;
  border: 1px dashed rgba(53, 214, 200, .38);
  border-radius: 4px;
  background: rgba(53, 214, 200, .07);
  font-size: clamp(12.5px, 1.1vw, 14px);
  line-height: 1.6;
  color: var(--warm);
  overflow-wrap: anywhere;
}

.page-contact .mail-panel__note {
  margin: 4px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
}

.page-contact .mail-panel__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 214, 200, .42);
}

.page-contact .mail-panel__note a:hover {
  color: var(--purple-soft);
  border-bottom-color: rgba(169, 155, 255, .7);
}

.page-contact .mail-points {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: var(--cp-pad);
  border: 1px solid var(--line);
  border-radius: var(--cp-radius);
  background: linear-gradient(168deg, rgba(122, 92, 255, .12), rgba(18, 26, 49, .92) 62%);
  min-width: 0;
}

.page-contact .mail-points__title {
  margin: 0;
  font-size: 15px;
  letter-spacing: .02em;
  color: var(--warm);
}

.page-contact .mail-points__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 13px;
}

.page-contact .mail-points__list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .mail-points__list li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 2px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
}

/* ---------- 回复节奏时间线 ---------- */
.page-contact .reply-list {
  position: relative;
  margin: clamp(24px, 3vw, 38px) 0 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-contact .reply-list::before {
  content: "";
  position: absolute;
  top: 9px;
  bottom: 9px;
  left: 3px;
  width: 1px;
  background: linear-gradient(180deg, rgba(122, 92, 255, .66), rgba(53, 214, 200, .42));
}

.page-contact .reply-item {
  position: relative;
  padding: 0 0 clamp(22px, 2.6vw, 32px);
}

.page-contact .reply-item:last-child {
  padding-bottom: 0;
}

.page-contact .reply-item::before {
  content: "";
  position: absolute;
  top: 7px;
  left: -29px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--purple);
  box-shadow: 0 0 0 3px rgba(122, 92, 255, .16);
}

.page-contact .reply-item h3 {
  margin: 0 0 6px;
  font-size: 17px;
  color: var(--warm);
}

.page-contact .reply-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 联系前先看 ---------- */
.page-contact .preflight-list {
  margin: clamp(24px, 3vw, 38px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .preflight-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 19px 6px 19px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: background-color .22s var(--ease), padding-left .22s var(--ease);
}

.page-contact .preflight-link:hover {
  background: rgba(122, 92, 255, .07);
  padding-left: 12px;
}

.page-contact .preflight-link__body {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.page-contact .preflight-link__q {
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--warm);
}

.page-contact .preflight-link__d {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .preflight-link__go {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
  white-space: nowrap;
}

/* ---------- 结尾 ---------- */
.page-contact .contact-tail {
  padding-top: clamp(28px, 4vw, 52px);
}

.page-contact .contact-tail__media {
  margin: 0;
}

.page-contact .contact-tail__cta {
  display: grid;
  gap: 18px;
  justify-items: start;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-contact .contact-tail__text {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 移动端收紧 ---------- */
@media (max-width: 620px) {
  .page-contact .preflight-link {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .page-contact .preflight-link__go {
    justify-self: start;
  }

  .page-contact .way-card::before,
  .page-contact .way-card::after {
    width: 12px;
    height: 12px;
  }
}
<<<END>>>