.page-contact {
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 面包屑 ---------- */
.page-contact .co-crumbs-wrap {
  padding-top: clamp(.9rem, 2.4vw, 1.5rem);
}

.page-contact .co-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .3rem;
  list-style: none;
  margin: 0;
  padding: 0 0 clamp(.9rem, 2.4vw, 1.5rem);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .05em;
  color: var(--slate);
}

.page-contact .co-crumbs .breadcrumbs__item {
  min-width: 0;
  color: var(--slate);
}

.page-contact .co-crumbs .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: .32rem;
  color: var(--rule);
}

.page-contact .co-crumbs .breadcrumbs__item[aria-current="page"] {
  color: var(--archive);
}

.page-contact .co-crumbs .breadcrumbs__link {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .co-crumbs .breadcrumbs__link:hover {
  color: var(--signal);
  border-color: var(--signal);
}

/* ---------- 键盘焦点 ---------- */
.page-contact a:focus-visible,
.page-contact [tabindex]:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink);
  color: var(--on-ink-strong);
  padding: clamp(2.4rem, 6.5vw, 4.8rem) 0 clamp(2.8rem, 7vw, 5.2rem);
}

.page-contact .co-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(58% 78% at 92% 4%, rgba(255, 107, 53, .2), transparent 62%),
    radial-gradient(52% 68% at 2% 102%, rgba(90, 125, 140, .28), transparent 66%);
  pointer-events: none;
}

.page-contact .co-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  z-index: -1;
  opacity: .9;
  background: linear-gradient(90deg,
    var(--signal) 0 18%,
    var(--amber) 18% 27%,
    var(--slate) 27% 62%,
    var(--archive) 62% 100%);
}

.page-contact .co-hero__tag {
  display: inline-block;
  margin: 0 0 1.1rem;
  padding: .3rem .85rem;
  border: 1px solid rgba(242, 166, 90, .45);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-contact .co-hero__title {
  margin: 0 0 1.15rem;
  max-width: min(100%, 44rem);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 4.7vw, 3rem);
  line-height: 1.24;
  letter-spacing: .01em;
}

.page-contact .co-hero__lede {
  margin: 0 0 1.9rem;
  max-width: min(100%, 47rem);
  font-size: clamp(.98rem, 1.4vw, 1.08rem);
  line-height: 1.9;
  color: var(--on-ink-soft);
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-contact .co-hero .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0 1.4rem;
  border: 1.5px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: .92rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}

.page-contact .co-hero .btn--signal {
  background: var(--signal);
  border-color: var(--signal);
  color: #fff;
}

.page-contact .co-hero .btn--signal:hover {
  background: #ff8256;
  border-color: #ff8256;
  transform: translateY(-2px);
}

.page-contact .co-hero .btn--ghost {
  background: transparent;
  border-color: rgba(245, 240, 230, .38);
  color: var(--on-ink-strong);
}

.page-contact .co-hero .btn--ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
  transform: translateY(-2px);
}

/* ---------- 布局骨架 ---------- */
.page-contact .co-layout {
  padding: clamp(2.2rem, 5vw, 4rem) 0 clamp(3rem, 7vw, 5rem);
}

.page-contact .co-layout__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3rem);
}

.page-contact .co-main {
  min-width: 0;
}

.page-contact .co-block + .co-block {
  margin-top: clamp(2.6rem, 6vw, 4.4rem);
}

/* ---------- 区块标题 ---------- */
.page-contact .co-head {
  margin-bottom: clamp(1.3rem, 3vw, 1.9rem);
}

.page-contact .co-head__index {
  display: inline-block;
  margin-bottom: .85rem;
  padding-bottom: .16rem;
  border-bottom: 2px solid var(--signal);
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--signal);
}

.page-contact .co-head__title {
  margin: 0 0 .55rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 2.6vw, 1.8rem);
  line-height: 1.36;
  color: var(--ink);
}

.page-contact .co-head__note {
  margin: 0;
  max-width: 42rem;
  font-size: .94rem;
  line-height: 1.82;
  color: var(--slate);
}

/* ---------- 合作方式卡片 ---------- */
.page-contact .co-models {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-contact .co-model {
  display: flex;
  flex-direction: column;
  padding: clamp(1.1rem, 2.6vw, 1.6rem);
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  transition: transform var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.page-contact .co-model:hover {
  transform: translateY(-3px);
  border-color: var(--signal);
  box-shadow: 0 14px 30px -22px rgba(15, 27, 45, .6);
}

.page-contact .co-model__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  margin-bottom: .85rem;
}

.page-contact .co-model__num {
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--slate);
}

.page-contact .co-model__tag {
  padding: .24rem .62rem;
  border-radius: var(--radius-pill);
  background: rgba(242, 166, 90, .22);
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--archive);
}

.page-contact .co-model__title {
  margin: 0 0 .6rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.1rem;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .co-model__fit {
  margin: 0 0 .8rem;
  padding-left: .7rem;
  border-left: 2px solid var(--amber);
  font-size: .8rem;
  line-height: 1.72;
  color: var(--slate);
}

.page-contact .co-model__text {
  flex: 1 1 auto;
  margin: 0 0 1.05rem;
  font-size: .92rem;
  line-height: 1.84;
  color: var(--ink-soft);
}

.page-contact .co-model__inline {
  color: var(--signal);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-contact .co-model__link {
  align-self: flex-start;
  padding-bottom: .1rem;
  border-bottom: 1px solid rgba(255, 107, 53, .35);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .03em;
  color: var(--signal);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .co-model__link:hover {
  color: var(--archive);
  border-color: var(--archive);
}

/* ---------- 图片容器 ---------- */
.page-contact .co-flow__fig,
.page-contact .co-eco__fig {
  margin: 0 0 1.6rem;
}

.page-contact .co-flow__fig .media__frame,
.page-contact .co-eco__fig .media__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  background: var(--paper-deep);
}

.page-contact .co-flow__fig .media__img,
.page-contact .co-eco__fig .media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .co-flow__fig .media__caption,
.page-contact .co-eco__fig .media__caption {
  margin-top: .7rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .03em;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 对接流程 ---------- */
.page-contact .co-flow {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .co-flow__step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .95rem;
  padding-bottom: 1.5rem;
}

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

.page-contact .co-flow__step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 1.25rem;
  top: 2.85rem;
  bottom: .2rem;
  width: 1px;
  transform: translateX(-50%);
  background: repeating-linear-gradient(to bottom, var(--rule) 0 5px, transparent 5px 11px);
}

.page-contact .co-flow__num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1.5px solid var(--rule);
  border-radius: var(--radius-pill);
  background: var(--paper-card);
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 600;
  color: var(--archive);
  transition: border-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.page-contact .co-flow__step:hover .co-flow__num {
  border-color: var(--signal);
  background: rgba(255, 107, 53, .08);
  color: var(--signal);
}

.page-contact .co-flow__body {
  padding-top: .15rem;
}

.page-contact .co-flow__title {
  margin: 0 0 .35rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.02rem;
  line-height: 1.45;
  color: var(--ink);
}

.page-contact .co-flow__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.84;
  color: var(--ink-soft);
}

.page-contact .co-flow__tip {
  margin: 1.5rem 0 0;
  padding: .9rem 1.1rem;
  border-radius: var(--radius-md);
  background: var(--paper-deep);
  font-size: .88rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-contact .co-flow__tip a {
  color: var(--signal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .co-flow__tip a:hover {
  color: var(--archive);
}

/* ---------- 合作生态 ---------- */
.page-contact .co-eco__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .85rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .co-eco__item {
  padding: 1.1rem 1.15rem;
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--slate);
  border-radius: 4px 4px var(--radius-md) var(--radius-md);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .co-eco__item:nth-child(1) { border-top-color: var(--signal); }
.page-contact .co-eco__item:nth-child(2) { border-top-color: var(--amber); }
.page-contact .co-eco__item:nth-child(3) { border-top-color: var(--slate); }

.page-contact .co-eco__item:hover {
  transform: translateY(-2px);
}

.page-contact .co-eco__item-title {
  margin: 0 0 .45rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: .98rem;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .co-eco__item-text {
  margin: 0;
  font-size: .88rem;
  line-height: 1.82;
  color: var(--ink-soft);
}

/* ---------- 到访与寄送 ---------- */
.page-contact .co-visit {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
  padding: clamp(1.15rem, 3vw, 1.75rem);
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
}

.page-contact .co-visit__text p {
  margin: 0 0 .85rem;
  font-size: .93rem;
  line-height: 1.86;
  color: var(--ink-soft);
}

.page-contact .co-visit__text p:last-child {
  margin-bottom: 0;
}

.page-contact .co-visit__meta {
  display: grid;
  gap: .7rem;
  align-content: start;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .co-visit__meta li {
  display: grid;
  gap: .16rem;
  padding-bottom: .7rem;
  border-bottom: 1px dashed var(--rule);
  font-family: var(--font-mono);
  font-size: .84rem;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .co-visit__meta li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-contact .co-visit__meta span {
  font-family: var(--font-body);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--slate);
}

/* ---------- 右侧固定联系卡 ---------- */
.page-contact .co-aside {
  min-width: 0;
}

.page-contact .co-card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border-radius: var(--radius-lg);
  background: var(--ink);
  color: var(--on-ink-strong);
}

.page-contact .co-card::before {
  content: "";
  position: absolute;
  top: -42%;
  right: -32%;
  width: 82%;
  height: 82%;
  background: radial-gradient(circle, rgba(255, 107, 53, .3), transparent 68%);
  pointer-events: none;
}

.page-contact .co-card > * {
  position: relative;
}

.page-contact .co-card__eyebrow {
  margin: 0 0 .5rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-contact .co-card__title {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.15rem, 2.4vw, 1.35rem);
  line-height: 1.38;
}

.page-contact .co-card__list {
  display: grid;
  gap: .85rem;
  margin: 0 0 1.1rem;
  padding: 0;
}

.page-contact .co-card__row {
  display: grid;
  gap: .18rem;
  padding-bottom: .85rem;
  border-bottom: 1px solid var(--hairline);
}

.page-contact .co-card__row:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-contact .co-card__label {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--on-ink-faint);
}

.page-contact .co-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--on-ink-strong);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .co-card__value--select {
  cursor: text;
  user-select: all;
  border-radius: 4px;
  transition: color var(--dur) var(--ease);
}

.page-contact .co-card__value--select:hover {
  color: var(--amber);
}

.page-contact .co-card__note {
  margin: 0 0 1.1rem;
  padding: .75rem .9rem;
  border-left: 3px solid var(--signal);
  border-radius: var(--radius-md);
  background: rgba(245, 240, 230, .08);
  font-size: .84rem;
  line-height: 1.78;
  color: var(--on-ink-soft);
}

.page-contact .co-card__link {
  display: inline-block;
  padding-bottom: .1rem;
  border-bottom: 1px solid rgba(242, 166, 90, .4);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .03em;
  color: var(--amber);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .co-card__link:hover {
  color: var(--on-ink-strong);
  border-color: var(--on-ink-strong);
}

/* ---------- 侧栏资料类型 ---------- */
.page-contact .co-side-note {
  margin-top: 1rem;
  padding: clamp(1.05rem, 2.6vw, 1.5rem);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  background: var(--paper-card);
}

.page-contact .co-side-note__title {
  margin: 0 0 .8rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .co-side-note__list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  list-style: none;
  margin: 0 0 .95rem;
  padding: 0;
}

.page-contact .co-side-note__list li {
  padding: .3rem .7rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius-pill);
  background: var(--paper-deep);
  font-size: .78rem;
  color: var(--ink-soft);
}

.page-contact .co-side-note__link {
  display: inline-block;
  padding-bottom: .1rem;
  border-bottom: 1px solid rgba(255, 107, 53, .35);
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--signal);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .co-side-note__link:hover {
  color: var(--archive);
  border-color: var(--archive);
}

/* ---------- 显现协议 ---------- */
.has-js .page-contact [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 280ms var(--ease), transform 280ms var(--ease);
}

.has-js .page-contact [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-contact .co-models {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem;
  }

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

@media (min-width: 760px) {
  .page-contact .co-visit {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 2rem;
  }
}

@media (min-width: 920px) {
  .page-contact .co-layout__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(272px, 1fr);
    gap: clamp(2.25rem, 4.5vw, 3.75rem);
  }

  .page-contact .co-aside {
    position: sticky;
    top: 7.5rem;
    align-self: start;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .co-model,
  .page-contact .co-eco__item,
  .page-contact .co-flow__num,
  .page-contact .co-hero .btn {
    transition: none;
  }

  .page-contact .co-model:hover,
  .page-contact .co-eco__item:hover,
  .page-contact .co-hero .btn:hover {
    transform: none;
  }

  .has-js .page-contact [data-reveal],
  .has-js .page-contact [data-reveal].is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}