.page-contact {
  --co-line: 3px solid var(--ink);
  --co-shadow: 8px 8px 0 var(--ink);
  --co-shadow-lime: 8px 8px 0 var(--lime);
  --co-gap: clamp(18px, 3vw, 28px);
  background: var(--grass);
  color: var(--paper);
  padding-bottom: clamp(24px, 4vw, 48px);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  padding-top: clamp(16px, 3vw, 28px);
  padding-bottom: clamp(16px, 3vw, 28px);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-contact .breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-contact .breadcrumbs a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  border-bottom-color: var(--lime);
}

/* ---------- 通用小标签 ---------- */
.page-contact .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-contact .eyebrow::before {
  content: "";
  width: 28px;
  height: 3px;
  background: var(--orange);
  flex: none;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  border-top: var(--co-line);
  border-bottom: var(--co-line);
  background: linear-gradient(155deg, var(--grass) 0%, var(--moss) 100%);
  padding: clamp(28px, 5vw, 64px) 0 clamp(36px, 6vw, 80px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -14%;
  right: -16%;
  width: 58%;
  height: 80%;
  background: var(--lime);
  opacity: .14;
  transform: skewY(-9deg);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 6.6vw, 76px);
  line-height: 1.04;
  letter-spacing: -.02em;
  margin: 0 0 20px;
  color: var(--paper);
}

.page-contact .contact-hero .lede {
  max-width: 58ch;
  margin: 0;
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.85;
  color: rgba(242, 244, 239, .86);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .contact-hero__actions .btn {
  text-decoration: none;
}

.page-contact .contact-hero__figure {
  margin: 0;
  border: var(--co-line);
  box-shadow: var(--co-shadow);
  background: var(--paper);
  overflow: hidden;
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 5 / 4;
}

/* ---------- 区块外壳 ---------- */
.page-contact .co-band {
  padding: clamp(44px, 7vw, 92px) 0;
}

.page-contact .co-band--grass {
  background: var(--grass);
}

.page-contact .co-band--paper {
  background-color: var(--paper);
  background-image: repeating-linear-gradient(-45deg, transparent 0 24px, rgba(11, 59, 46, .05) 24px 48px);
  color: var(--ink);
  border-top: var(--co-line);
  border-bottom: var(--co-line);
}

.page-contact .co-band--coal {
  background: var(--coal);
  border-top: var(--co-line);
  border-bottom: var(--co-line);
}

.page-contact .co-band__head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-contact .co-band__title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 48px);
  line-height: 1.1;
  letter-spacing: -.01em;
  margin: 0 0 14px;
  color: var(--paper);
}

.page-contact .co-band__sub {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 244, 239, .78);
}

.page-contact .co-band--paper .co-band__title {
  color: var(--ink);
}

.page-contact .co-band--paper .co-band__sub {
  color: var(--moss);
}

.page-contact .co-band--paper .eyebrow {
  color: var(--moss);
}

/* ---------- 四条合作入口 ---------- */
.page-contact .partners-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-contact .partner-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(20px, 3vw, 32px);
  background: var(--paper);
  color: var(--ink);
  border: var(--co-line);
  box-shadow: var(--co-shadow);
  transition: transform 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-contact .partner-card:hover,
.page-contact .partner-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 12px 12px 0 var(--ink);
}

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

.page-contact .partner-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1.22;
}

.page-contact .partner-card__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: #35443e;
}

.page-contact .partner-card__meta {
  margin: auto 0 0;
  padding-top: 16px;
  border-top: 2px solid rgba(6, 31, 25, .18);
  display: grid;
  gap: 6px;
}

.page-contact .partner-card__meta dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-contact .partner-card__meta dd {
  margin: 0 0 4px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink);
}

/* ---------- 提交清单 ---------- */
.page-contact .checklist {
  display: grid;
  grid-template-columns: 1fr;
  background: var(--white);
  color: var(--ink);
  border: var(--co-line);
  box-shadow: var(--co-shadow);
}

.page-contact .checklist__col {
  padding: clamp(20px, 3vw, 30px);
  border-bottom: var(--co-line);
}

.page-contact .checklist__col:last-child {
  border-bottom: 0;
}

.page-contact .checklist__title {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px dashed rgba(6, 31, 25, .28);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-contact .checklist__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-contact .checklist__list li {
  position: relative;
  padding-left: 24px;
  font-size: 15.5px;
  line-height: 1.7;
}

.page-contact .checklist__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .6em;
  width: 10px;
  height: 10px;
  background: var(--lime);
  border: 2px solid var(--ink);
}

/* ---------- 联络方式 ---------- */
.page-contact .contact-block {
  max-width: 940px;
  padding: clamp(24px, 4vw, 52px);
  background: var(--coal);
  border: var(--co-line);
  box-shadow: var(--co-shadow-lime);
}

.page-contact .contact-block__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 30px);
}

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

.page-contact .contact-block__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-contact .contact-block__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2vw, 22px);
  line-height: 1.55;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-block__note {
  max-width: 62ch;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding-top: 18px;
  border-top: 2px solid rgba(198, 255, 61, .38);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 244, 239, .8);
}

/* ---------- 合作流程 ---------- */
.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  background: var(--paper);
  color: var(--ink);
  border: var(--co-line);
  box-shadow: var(--co-shadow);
}

.page-contact .flow__step {
  padding: clamp(20px, 3vw, 30px);
  border-bottom: var(--co-line);
  transition: background-color 200ms var(--ease);
}

.page-contact .flow__step:last-child {
  border-bottom: 0;
}

.page-contact .flow__step:hover,
.page-contact .flow__step:focus-within {
  background-color: var(--lime);
}

.page-contact .flow__num {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-contact .flow__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 23px);
  line-height: 1.2;
}

.page-contact .flow__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: #35443e;
}

.page-contact .flow-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
  background: var(--coal);
  border: var(--co-line);
  box-shadow: var(--co-shadow-lime);
  overflow: hidden;
}

.page-contact .flow-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}

/* ---------- 发信提示 ---------- */
.page-contact .tips-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--co-gap);
}

.page-contact .tip-card {
  padding: clamp(18px, 2.6vw, 26px);
  background: rgba(6, 31, 25, .48);
  border: var(--co-line);
  border-top: 8px solid var(--lime);
  transition: transform 200ms var(--ease), border-top-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-contact .tip-card:hover,
.page-contact .tip-card:focus-within {
  transform: translateY(-4px);
  border-top-color: var(--orange);
  background: rgba(30, 107, 82, .62);
}

.page-contact .tip-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.3;
  color: var(--lime);
}

.page-contact .tip-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(242, 244, 239, .84);
}

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

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

  .page-contact .contact-block__item:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 780px) {
  .page-contact .partners-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 24px;
  }

  .page-contact .partner-card--a,
  .page-contact .partner-card--b {
    grid-column: span 3;
  }

  .page-contact .partner-card--c {
    grid-column: span 4;
  }

  .page-contact .partner-card--d {
    grid-column: span 2;
  }
}

@media (min-width: 820px) {
  .page-contact .checklist {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .checklist__col {
    border-bottom: 0;
    border-right: var(--co-line);
  }

  .page-contact .checklist__col:last-child {
    border-right: 0;
  }

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

  .page-contact .contact-block__item:last-child {
    grid-column: auto;
  }
}

@media (min-width: 900px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .flow__step {
    border-bottom: 0;
    border-right: var(--co-line);
  }

  .page-contact .flow__step:last-child {
    border-right: 0;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 1100px) {
  .page-contact .tips-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .partner-card,
  .page-contact .tip-card,
  .page-contact .flow__step {
    transition: none;
  }

  .page-contact .partner-card:hover,
  .page-contact .partner-card:focus-within,
  .page-contact .tip-card:hover,
  .page-contact .tip-card:focus-within {
    transform: none;
  }
}