.page-contact {
  --coop-gap: clamp(18px, 3vw, 32px);
  --coop-radius: 18px;
  --coop-line: rgba(212, 175, 55, .24);
  color: var(--paper);
}

.page-contact .contact-topbar {
  padding-top: clamp(84px, 11vw, 126px);
}

.page-contact .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-contact .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .breadcrumb a:hover {
  color: var(--gold-soft);
  border-bottom-color: var(--line-strong);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero__head h1 {
  margin: 14px 0 18px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(28px, 4.3vw, 52px);
  line-height: 1.14;
  letter-spacing: -.02em;
  max-width: 20ch;
}

.page-contact .contact-hero__lede {
  max-width: 720px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: rgba(244, 241, 232, .82);
}

/* ---------- 路径分叉 ---------- */
.page-contact .fork {
  display: grid;
  gap: 14px;
  margin: clamp(28px, 4vw, 44px) 0 clamp(26px, 3.5vw, 38px);
}

.page-contact .fork__lane {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 26px 24px 24px 28px;
  border-radius: var(--coop-radius);
  border: 1px solid var(--line-soft);
  background: linear-gradient(158deg, rgba(18, 38, 58, .95), rgba(11, 27, 43, .88));
  box-shadow: var(--shadow-stack);
  text-decoration: none;
  color: var(--paper);
  overflow: hidden;
  transition: transform .24s var(--ease), border-color .24s var(--ease);
}

.page-contact .fork__lane::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
}

.page-contact .fork__lane--gold::before {
  background: linear-gradient(180deg, var(--gold), rgba(212, 175, 55, .08));
}

.page-contact .fork__lane--jade::before {
  background: linear-gradient(180deg, var(--jade), rgba(42, 157, 143, .08));
}

.page-contact .fork__lane--gold:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
}

.page-contact .fork__lane--jade:hover {
  border-color: rgba(42, 157, 143, .55);
  transform: translateY(-4px);
}

.page-contact .fork__lane .tag {
  align-self: flex-start;
}

.page-contact .fork__title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(19px, 2.1vw, 25px);
  letter-spacing: -.01em;
}

.page-contact .fork__desc {
  font-size: 15px;
  line-height: 1.72;
  color: rgba(244, 241, 232, .74);
}

.page-contact .fork__go {
  margin-top: auto;
  padding-top: 6px;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--gold-soft);
}

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

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

/* ---------- 三类合作 ---------- */
.page-contact .coop-types {
  gap: var(--coop-gap);
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-contact .coop-type {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 2.6vw, 30px);
}

.page-contact .coop-type__num {
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-contact .coop-type h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(19px, 2vw, 23px);
  letter-spacing: -.01em;
}

.page-contact .coop-type__intro {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(244, 241, 232, .86);
}

.page-contact .coop-type__rows {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-contact .coop-type__rows dt {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin-bottom: 4px;
}

.page-contact .coop-type__rows dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(244, 241, 232, .78);
}

.page-contact .coop-type__foot {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--mist);
}

.page-contact .coop-type__foot a,
.page-contact .side-card__note a,
.page-contact .feedback-block__note a,
.page-contact .contact-note a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(235, 208, 138, .45);
}

.page-contact .coop-type__foot a:hover,
.page-contact .side-card__note a:hover,
.page-contact .feedback-block__note a:hover,
.page-contact .contact-note a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 双栏：时间线 + 侧卡 ---------- */
.page-contact .coop-grid {
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-contact .coop-grid__side {
  margin-top: var(--coop-gap);
}

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

.page-contact .timeline::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--line-strong), rgba(212, 175, 55, .05));
}

.page-contact .timeline__item {
  position: relative;
  padding-left: 48px;
}

.page-contact .timeline__item + .timeline__item {
  margin-top: 14px;
}

.page-contact .timeline__item::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-night);
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, .1);
  transition: transform .22s var(--ease), background .22s var(--ease);
}

.page-contact .timeline__item:hover::before {
  transform: scale(1.05);
  background: var(--gold);
}

.page-contact .timeline__node {
  border: 1px solid var(--line-soft);
  border-radius: var(--coop-radius);
  background: linear-gradient(156deg, rgba(18, 38, 58, .92), rgba(11, 27, 43, .74));
  overflow: hidden;
  transition: border-color .22s var(--ease);
}

.page-contact .timeline__node[open] {
  border-color: var(--coop-line);
}

.page-contact .timeline__node summary {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 6px 14px;
  padding: 17px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .timeline__num {
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-contact .timeline__label {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -.005em;
}

.page-contact .timeline__meta {
  grid-column: 2;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-contact .timeline__node[open] .timeline__label {
  color: var(--gold-soft);
}

.page-contact .timeline__body {
  padding: 14px 18px 18px;
  border-top: 1px dashed var(--line-soft);
  font-size: 15px;
  line-height: 1.76;
  color: rgba(244, 241, 232, .78);
}

.page-contact .process-figure {
  margin: clamp(28px, 3.6vw, 44px) 0 0;
}

/* ---------- 申请材料 ---------- */
.page-contact .materials {
  margin-top: clamp(30px, 4vw, 48px);
  padding: clamp(22px, 2.8vw, 34px);
  border: 1px solid var(--coop-line);
  border-radius: var(--coop-radius);
  background: linear-gradient(142deg, rgba(22, 41, 62, .92), rgba(11, 27, 43, .84));
  box-shadow: var(--shadow-stack);
}

.page-contact .materials h3 {
  margin: 8px 0 10px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(20px, 2.2vw, 26px);
  letter-spacing: -.01em;
}

.page-contact .materials__intro {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: rgba(244, 241, 232, .76);
}

.page-contact .materials__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .materials__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(5, 12, 20, .34);
  border: 1px solid rgba(125, 140, 163, .16);
}

.page-contact .materials__label {
  justify-self: start;
  padding: 4px 9px;
  border-radius: 4px;
  background: var(--gold);
  color: var(--black);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .1em;
  white-space: nowrap;
}

.page-contact .materials__text {
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(244, 241, 232, .8);
}

/* ---------- 侧边联系卡 ---------- */
.page-contact .side-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 2.6vw, 28px);
}

.page-contact .side-card__kicker {
  margin: 0;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .side-card__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(20px, 2.2vw, 24px);
  letter-spacing: -.01em;
}

.page-contact .side-card__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(244, 241, 232, .76);
}

.page-contact .side-item {
  display: grid;
  gap: 4px;
  padding-top: 13px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .side-item__label {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .side-item__value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .side-card__note {
  margin: 4px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 反馈通道 ---------- */
.page-contact .feedback-block {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3vw, 42px);
  border: 1px solid rgba(230, 57, 70, .38);
  border-radius: var(--coop-radius);
  background: linear-gradient(152deg, rgba(230, 57, 70, .14), rgba(11, 27, 43, .92) 46%);
}

.page-contact .feedback-block::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red), var(--amber) 52%, rgba(242, 166, 90, 0));
}

.page-contact .feedback-block__head h2 {
  margin: 10px 0 12px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -.015em;
}

.page-contact .feedback-block__head p {
  margin: 0;
  max-width: 720px;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(244, 241, 232, .8);
}

.page-contact .feedback-list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .feedback-list li {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border-radius: 12px;
  background: rgba(5, 12, 20, .42);
  border: 1px solid rgba(125, 140, 163, .18);
}

.page-contact .feedback-list strong {
  font-size: 15px;
  font-weight: 600;
}

.page-contact .feedback-list span {
  font-size: 14px;
  line-height: 1.72;
  color: rgba(244, 241, 232, .76);
}

.page-contact .feedback-channels {
  margin-top: clamp(22px, 3vw, 32px);
  display: grid;
  gap: 12px;
}

.page-contact .feedback-channel {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border-radius: 12px;
  background: linear-gradient(150deg, rgba(42, 157, 143, .18), rgba(18, 38, 58, .88));
  border: 1px solid rgba(42, 157, 143, .36);
}

.page-contact .feedback-channel__label {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--jade);
}

.page-contact .feedback-channel__value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.55;
  word-break: break-word;
}

.page-contact .feedback-block__note {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 问答 ---------- */
.page-contact .faq {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  gap: 12px;
}

.page-contact .faq details {
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: rgba(18, 38, 58, .55);
  overflow: hidden;
  transition: border-color .22s var(--ease);
}

.page-contact .faq details[open] {
  border-color: var(--coop-line);
}

.page-contact .faq summary {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
}

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

.page-contact .faq summary::after {
  content: "＋";
  flex: none;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold);
}

.page-contact .faq details[open] summary::after {
  content: "－";
}

.page-contact .faq p {
  margin: 0;
  padding: 0 20px 18px;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 241, 232, .78);
}

/* ---------- 联系信息 ---------- */
.page-contact .contact-grid {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  gap: var(--coop-gap);
}

.page-contact .contact-item {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 2.4vw, 26px);
  border-radius: var(--coop-radius);
  border: 1px solid var(--coop-line);
  background: linear-gradient(150deg, rgba(18, 38, 58, .94), rgba(11, 27, 43, .72));
  box-shadow: var(--shadow-stack);
}

.page-contact .contact-item__label {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold-soft);
}

.page-contact .contact-item__value {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

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

.page-contact .contact-note {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line-strong);
  max-width: 720px;
  font-size: 13.5px;
  line-height: 1.74;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .fork {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

  .page-contact .feedback-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .materials__item {
    grid-template-columns: 108px 1fr;
    align-items: start;
    gap: 14px;
  }
}

@media (min-width: 960px) {
  .page-contact .coop-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, .9fr);
    gap: clamp(28px, 3.6vw, 54px);
    align-items: start;
  }

  .page-contact .coop-grid__side {
    margin-top: 0;
    position: sticky;
    top: 108px;
  }

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

  .page-contact .timeline::before {
    left: 22px;
  }

  .page-contact .timeline__item::before {
    left: 15px;
  }

  .page-contact .timeline__node summary {
    grid-template-columns: auto 1fr auto;
    gap: 16px;
    padding: 18px 22px;
  }

  .page-contact .timeline__meta {
    grid-column: 3;
  }

  .page-contact .timeline__body {
    padding: 16px 22px 20px;
  }
}

@media (max-width: 899px) {
  .page-contact .coop-type.span-4 {
    grid-column: 1 / -1;
  }
}

@media (max-width: 559px) {
  .page-contact .contact-hero__head h1 {
    max-width: none;
  }

  .page-contact .fork__lane {
    padding: 22px 18px 20px 22px;
  }

  .page-contact .contact-item__value,
  .page-contact .side-item__value,
  .page-contact .feedback-channel__value {
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .fork__lane,
  .page-contact .timeline__item::before,
  .page-contact .breadcrumb a {
    transition: none;
  }

  .page-contact .fork__lane:hover {
    transform: none;
  }
}