.page-contact {
  --c-accent-ink: #0E6B62;
  --c-paper-line: rgba(14, 34, 36, 0.13);
  --c-paper-muted: rgba(14, 34, 36, 0.64);
  --c-paper-soft: rgba(14, 34, 36, 0.05);

  padding-top: var(--bar-h);
  background: var(--ink-0);
  color: var(--paper);
}

/* ---------- 顶部工具条 ---------- */
.page-contact .contact-toolbar {
  background: var(--ink-1);
  border-bottom: 1px solid var(--rule-20);
}

.page-contact .contact-toolbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.page-contact .anchor-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-contact .anchor-list a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(44px, 6vw, 88px) 0 clamp(48px, 6vw, 84px);
  border-bottom: 1px solid var(--rule-20);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(340px, 42vw);
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  opacity: 0.6;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.page-contact .contact-hero__note {
  margin: 0 0 14px;
  color: var(--amber);
}

.page-contact .contact-hero__title {
  margin: 0 0 20px;
  font-size: clamp(32px, 5.4vw, 62px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-hero__title br {
  display: none;
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-contact .contact-hero__media {
  margin: 0;
  overflow: hidden;
}

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

/* ---------- 合作方向 ---------- */
.page-contact .contact-directions {
  padding: clamp(52px, 7vw, 96px) 0;
}

.page-contact .direction-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 34px;
  background: var(--rule-20);
  border: 1px solid var(--rule-20);
}

.page-contact .direction-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px 22px 28px;
  background: var(--ink-0);
  transition: background var(--t) var(--ease);
}

.page-contact .direction-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t) var(--ease);
}

.page-contact .direction-card:hover {
  background: var(--ink-1);
}

.page-contact .direction-card:hover::before {
  transform: scaleX(1);
}

.page-contact .direction-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-contact .direction-card__title {
  margin: 14px 0 12px;
  font-size: 21px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .direction-card__text {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .direction-card__points {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .direction-card__points li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(237, 243, 241, 0.86);
}

.page-contact .direction-card__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .direction-card__who {
  margin: auto 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--rule-20);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 对接流程（浅色阅读面 + 深色侧卡） ---------- */
.page-contact .contact-flow {
  background: var(--paper);
  color: var(--paper-ink);
  padding: clamp(52px, 7vw, 96px) 0 clamp(48px, 6vw, 84px);
}

.page-contact .contact-flow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(34px, 4vw, 56px);
}

.page-contact .contact-flow .chapter__num {
  color: rgba(14, 34, 36, 0.34);
}

.page-contact .contact-flow .chapter__title,
.page-contact .contact-brief .chapter__title {
  color: var(--paper-ink);
}

.page-contact .contact-flow .chapter__note,
.page-contact .contact-brief .chapter__note {
  color: var(--c-paper-muted);
}

.page-contact .step-list {
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .step-item {
  position: relative;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 0 20px;
  padding-bottom: 30px;
}

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

.page-contact .step-item::before {
  content: "";
  position: absolute;
  left: 25px;
  top: 58px;
  bottom: 4px;
  border-left: 1px dashed rgba(14, 34, 36, 0.26);
}

.page-contact .step-item:last-child::before {
  display: none;
}

.page-contact .step-item__num {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan);
  background: var(--paper-ink);
  clip-path: polygon(13px 0, 100% 0, 100% calc(100% - 13px), calc(100% - 13px) 100%, 0 100%, 0 13px);
  transition: background var(--t) var(--ease);
}

.page-contact .step-item:hover .step-item__num {
  background: var(--c-accent-ink);
}

.page-contact .step-item__body h3 {
  margin: 8px 0 10px;
  font-size: 20px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--paper-ink);
}

.page-contact .step-item__body p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(14, 34, 36, 0.78);
}

.page-contact .step-item__body p:last-child {
  margin-bottom: 0;
}

.page-contact .step-item__need {
  display: block;
  padding: 10px 14px;
  border-left: 3px solid var(--amber);
  background: var(--c-paper-soft);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-paper-muted);
  opacity: 0.72;
  transition: opacity var(--t) var(--ease), background var(--t) var(--ease);
}

.page-contact .step-item__need span {
  display: inline-block;
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--c-accent-ink);
}

.page-contact .step-item:hover .step-item__need {
  opacity: 1;
  background: rgba(56, 242, 224, 0.12);
}

.page-contact .contact-flow__media {
  margin: 34px 0 0;
  overflow: hidden;
}

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

/* ---------- 联系卡片 ---------- */
.page-contact .contact-card {
  padding: 26px 22px 28px;
  background: var(--ink-1);
  color: var(--paper);
  border: 1px solid var(--rule-40);
  border-top: 3px solid var(--cyan);
}

.page-contact .contact-card__title {
  margin: 0 0 12px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .contact-card__lead {
  margin: 0 0 22px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--rule-20);
}

.page-contact .contact-card__item {
  display: grid;
  gap: 6px;
  padding: 16px 2px 18px;
  background: var(--ink-1);
}

.page-contact .contact-card__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .contact-card__val {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .contact-card__val--mono {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--cyan);
  user-select: all;
}

.page-contact .contact-card__hint {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-card__cta {
  margin-top: 22px;
  width: 100%;
  justify-content: center;
}

/* ---------- 合作规模刻度条 ---------- */
.page-contact .contact-scale {
  background: var(--ink-2);
  border-top: 1px solid var(--rule-20);
  border-bottom: 1px solid var(--rule-20);
}

.page-contact .contact-scale__inner {
  display: grid;
  gap: 18px;
  padding-top: 28px;
  padding-bottom: 30px;
}

.page-contact .contact-scale__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-contact .contact-scale__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ---------- 准备材料 ---------- */
.page-contact .contact-brief {
  background: var(--paper);
  color: var(--paper-ink);
  padding: clamp(52px, 7vw, 96px) 0;
}

.page-contact .brief-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 34px;
}

.page-contact .brief-field {
  padding: 16px 18px 18px;
  background: var(--c-paper-soft);
  border: 1px solid var(--c-paper-line);
  border-left: 3px solid rgba(14, 34, 36, 0.22);
  transition: border-color var(--t) var(--ease), box-shadow var(--t) var(--ease),
    background var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-contact .brief-field:hover,
.page-contact .brief-field:focus-within {
  background: rgba(56, 242, 224, 0.14);
  border-color: var(--c-accent-ink);
  border-left-color: var(--c-accent-ink);
  box-shadow: 0 0 0 3px rgba(14, 107, 98, 0.16);
  transform: translateY(-2px);
}

.page-contact .brief-field__key {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--c-accent-ink);
}

.page-contact .brief-field__val {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(14, 34, 36, 0.82);
}

/* ---------- 受理与回复 ---------- */
.page-contact .contact-reach {
  padding: clamp(52px, 7vw, 96px) 0 clamp(56px, 7vw, 100px);
  border-top: 1px solid var(--rule-20);
}

.page-contact .reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 34px;
  background: var(--rule-20);
  border: 1px solid var(--rule-20);
}

.page-contact .reach-item {
  display: flex;
  flex-direction: column;
  padding: 26px 22px 28px;
  background: var(--ink-0);
  transition: background var(--t) var(--ease);
}

.page-contact .reach-item:hover {
  background: var(--ink-1);
}

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

.page-contact .reach-item__title {
  margin: 16px 0 12px;
  font-size: 19px;
  line-height: 1.42;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .reach-item p {
  margin: 0 0 20px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .reach-item__link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 14px;
  font-weight: 500;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-40);
  padding-bottom: 2px;
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease);
}

.page-contact .reach-item__link span {
  display: inline-block;
  margin-left: 6px;
  transition: transform var(--t) var(--ease);
}

.page-contact .reach-item__link:hover,
.page-contact .reach-item__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
  outline: none;
}

.page-contact .reach-item__link:hover span {
  transform: translateX(4px);
}

.page-contact .reach-foot {
  margin: 30px 0 0;
  padding-left: 18px;
  border-left: 3px solid var(--amber);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .contact-scale__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-contact .contact-hero__title br {
    display: inline;
  }
}

@media (min-width: 760px) {
  .page-contact .direction-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: center;
  }

  .page-contact .contact-hero__copy {
    grid-column: 1 / span 6;
  }

  .page-contact .contact-hero__media {
    grid-column: 8 / span 5;
  }
}

@media (min-width: 1020px) {
  .page-contact .contact-flow__grid {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-contact .contact-card {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
  }

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

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

  .page-contact .contact-scale__inner {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 1180px) {
  .page-contact .direction-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .step-item {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 0 24px;
  }

  .page-contact .step-item__num {
    width: 58px;
    height: 58px;
  }

  .page-contact .step-item::before {
    left: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * {
    transition-duration: 0.01ms !important;
  }

  .page-contact .brief-field:hover,
  .page-contact .brief-field:focus-within {
    transform: none;
  }
}