.page-contact {
  --coop-radius: 2px;
  --coop-pad: 24px;
}

.page-contact .coop-crumb {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-contact .coop-hero {
  padding: 26px 0 40px;
}

.page-contact .coop-hero__grid {
  display: grid;
  gap: 32px;
}

.page-contact .coop-hero__title {
  margin: 14px 0 0;
  font-size: clamp(1.95rem, 7.2vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-contact .coop-hero__lede {
  margin-top: 20px;
  max-width: 60ch;
}

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

.page-contact .coop-hero__card {
  position: relative;
  padding: 26px 22px 22px;
  overflow: hidden;
}

.page-contact .coop-hero__card::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--by-cyan), rgba(38, 239, 208, 0) 78%);
}

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

.page-contact .coop-contact__k {
  display: block;
  margin: 0 0 5px;
  font-family: var(--by-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--by-mist);
}

.page-contact .coop-contact__v {
  display: block;
  font-size: 0.97rem;
  line-height: 1.55;
  color: var(--by-text);
  word-break: break-word;
}

.page-contact .coop-contact__note {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--by-line);
  font-size: 0.83rem;
  line-height: 1.75;
  color: var(--by-mist);
}

/* ---------- 视觉 ---------- */
.page-contact .coop-visual {
  margin: 0 auto;
}

.page-contact .coop-visual-2 {
  margin: 0;
}

.page-contact .coop-visual img,
.page-contact .coop-visual-2 img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--coop-radius);
}

/* ---------- 区块节奏 ---------- */
.page-contact .coop-sec {
  padding: 52px 0;
}

.page-contact #coop-modes {
  scroll-margin-top: 96px;
}

.page-contact .coop-intro {
  max-width: 62ch;
  margin: 18px 0 0;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--by-silver);
}

/* ---------- 方向带 ---------- */
.page-contact .coop-rail {
  list-style: none;
  margin: 18px 0 0;
  padding: 0 0 6px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-contact .coop-rail > li {
  flex: 0 0 auto;
  white-space: nowrap;
}

/* ---------- 合作方式 ---------- */
.page-contact .coop-modes {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.page-contact .coop-mode {
  position: relative;
  padding: 26px 20px 22px;
  border: 1px solid var(--by-line);
  border-radius: var(--coop-radius);
  background: linear-gradient(180deg, rgba(13, 43, 37, 0.68), rgba(4, 16, 13, 0.4));
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-contact .coop-mode:hover {
  border-color: var(--by-line-strong);
  transform: translateY(-2px);
}

.page-contact .coop-mode__num {
  margin: 0;
  font-family: var(--by-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--by-orange);
}

.page-contact .coop-mode__title {
  margin: 14px 0 10px;
  font-size: 1.18rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-contact .coop-mode__text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--by-silver);
}

.page-contact .coop-mode__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .coop-mode__list li {
  position: relative;
  padding-left: 16px;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--by-mist);
}

.page-contact .coop-mode__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 1px;
  background: var(--by-cyan);
}

/* ---------- 图文分栏 ---------- */
.page-contact .coop-split {
  display: grid;
  gap: 30px;
  align-items: center;
}

.page-contact .coop-gains {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .coop-gains li {
  position: relative;
  padding-left: 20px;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--by-silver);
}

.page-contact .coop-gains li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 9px;
  height: 1px;
  background: var(--by-orange);
}

.page-contact .coop-gains strong {
  display: block;
  margin-bottom: 4px;
  font-weight: 600;
  color: var(--by-text);
}

/* ---------- 适合对象 ---------- */
.page-contact .coop-fit {
  margin-top: 28px;
  display: grid;
  gap: 1px;
  border: 1px solid var(--by-line);
  border-radius: var(--coop-radius);
  background: var(--by-line);
  overflow: hidden;
}

.page-contact .coop-fit__item {
  padding: 24px 20px;
  background: linear-gradient(180deg, rgba(13, 43, 37, 0.6), rgba(4, 16, 13, 0.6));
}

.page-contact .coop-fit__item h3 {
  margin: 0 0 10px;
  font-size: 1.02rem;
  line-height: 1.4;
}

.page-contact .coop-fit__item p {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.72;
  color: var(--by-silver);
}

/* ---------- 推进步骤 ---------- */
.page-contact .coop-steps {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--by-line);
}

.page-contact .coop-step {
  display: grid;
  gap: 6px;
  padding: 22px 0;
  border-bottom: 1px solid var(--by-line);
}

.page-contact .coop-step__num {
  font-family: var(--by-mono);
  font-size: 1rem;
  letter-spacing: 0.12em;
  color: var(--by-cyan);
}

.page-contact .coop-step__title {
  margin: 0;
  font-size: 1.04rem;
  line-height: 1.4;
}

.page-contact .coop-step__text {
  margin: 0;
  font-size: 0.91rem;
  line-height: 1.75;
  color: var(--by-silver);
}

/* ---------- 结尾 ---------- */
.page-contact .coop-cta {
  display: grid;
  gap: 24px;
  padding: 30px 22px;
  border: 1px solid var(--by-line-strong);
  border-radius: var(--coop-radius);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(38, 239, 208, 0.10), rgba(38, 239, 208, 0) 62%),
    linear-gradient(180deg, rgba(18, 58, 48, 0.58), rgba(4, 16, 13, 0.5));
}

.page-contact .coop-cta__text {
  max-width: 56ch;
  margin: 16px 0 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--by-silver);
}

.page-contact .coop-cta__meta {
  display: grid;
  gap: 4px;
  align-content: start;
}

.page-contact .coop-cta__strong {
  margin: 0 0 14px;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--by-text);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .coop-fit {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-contact .coop-modes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .coop-mode {
    padding: 30px 24px 26px;
  }

  .page-contact .coop-hero__card {
    padding: 30px 28px 26px;
  }
}

@media (min-width: 780px) {
  .page-contact .coop-step {
    grid-template-columns: 78px minmax(0, 0.9fr) minmax(0, 1.25fr);
    align-items: start;
    gap: 4px 24px;
    padding: 26px 0;
  }

  .page-contact .coop-step__num {
    grid-row: 1;
    padding-top: 2px;
  }
}

@media (min-width: 900px) {
  .page-contact .coop-hero {
    padding: 34px 0 56px;
  }

  .page-contact .coop-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.72fr);
    gap: 52px;
    align-items: start;
  }

  .page-contact .coop-sec {
    padding: 74px 0;
  }

  .page-contact .coop-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 50px;
  }

  .page-contact .coop-cta {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
    align-items: center;
    gap: 44px;
    padding: 40px 36px;
  }
}

@media (min-width: 1000px) {
  .page-contact .coop-fit {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}