.page-contact {
  --co-notch: 20px;
  --co-amber-soft: rgba(232, 163, 61, .1);
}

.page-contact .breadcrumb {
  padding-top: clamp(14px, 2vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  padding: clamp(26px, 4.5vw, 54px) 0 clamp(36px, 6vw, 72px);
}

.page-contact .co-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--amber), var(--cinnabar) 46%, var(--celadon));
}

.page-contact .co-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-contact .co-hero__title {
  max-width: 17ch;
  margin-top: 10px;
}

.page-contact .co-hero__lead {
  max-width: 52ch;
  margin-top: 16px;
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .co-hero__aside {
  border-left: 3px solid var(--amber);
  background: linear-gradient(180deg, var(--co-amber-soft), rgba(16, 36, 58, .72));
  padding: clamp(18px, 3vw, 26px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--co-notch)), calc(100% - var(--co-notch)) 100%, 0 100%);
}

.page-contact .co-hero__badge {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--celadon);
  border: 1px solid rgba(76, 154, 142, .5);
  border-radius: var(--radius);
  padding: 6px 12px;
  margin: 0;
}

.page-contact .co-toc {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .co-toc__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 2px;
  font-size: 14px;
  color: var(--smoke);
  text-decoration: none;
  border-bottom: 1px dashed rgba(27, 58, 87, .9);
  transition: color .2s var(--ease), padding-left .2s var(--ease);
}

.page-contact .co-toc__link::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
  transition: background .2s var(--ease);
}

.page-contact .co-toc__link:hover,
.page-contact .co-toc__link[aria-current="true"],
.page-contact .co-toc__link[aria-current="page"] {
  color: var(--amber-lt);
  padding-left: 8px;
}

.page-contact .co-toc__link:hover::before,
.page-contact .co-toc__link[aria-current="true"]::before,
.page-contact .co-toc__link[aria-current="page"]::before {
  background: var(--amber);
}

/* ---------- 通用小标题组 ---------- */
.page-contact .co-head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

.page-contact .co-head__sub {
  margin-top: 12px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--smoke);
}

/* ---------- 联系方式全宽横条 ---------- */
.page-contact .co-channels {
  position: relative;
  padding: clamp(34px, 5.5vw, 66px) 0;
  background: linear-gradient(180deg, rgba(5, 11, 18, .9), rgba(11, 27, 43, .55));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .co-channels::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(280px, 40%);
  height: 3px;
  background: var(--amber);
}

.page-contact .co-cards {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-contact .co-card {
  position: relative;
  padding: 28px clamp(18px, 2.4vw, 26px) 24px;
  background: linear-gradient(160deg, var(--co-amber-soft), transparent 62%), var(--panel);
  clip-path: polygon(0 0, calc(100% - var(--co-notch)) 0, 100% var(--co-notch), 100% 100%, var(--co-notch) 100%, 0 calc(100% - var(--co-notch)));
  transition: transform .28s var(--ease);
}

.page-contact .co-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 3px;
  background: var(--amber);
}

.page-contact .co-card:hover {
  transform: translateY(-4px);
}

.page-contact .co-card__kicker {
  margin: 0;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--celadon);
  text-transform: uppercase;
}

.page-contact .co-card__title {
  margin: 8px 0 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--cream);
}

.page-contact .co-card__value {
  margin: 10px 0 14px;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.45;
  color: var(--amber-lt);
  letter-spacing: -.01em;
  word-break: break-word;
}

.page-contact .co-card__value--addr {
  font-family: var(--font-body);
  font-size: clamp(16px, 1.7vw, 18px);
  color: var(--cream);
}

.page-contact .co-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
}

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

.page-contact .co-card__meta {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--smoke);
}

/* ---------- 合作流程 ---------- */
.page-contact .co-flow {
  padding: clamp(40px, 6vw, 78px) 0 clamp(34px, 5vw, 62px);
}

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

.page-contact .co-step {
  position: relative;
  padding: 22px 20px 20px;
  background: var(--panel);
  border-top: 2px solid var(--line);
  transition: background .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .co-step__num {
  display: block;
  font-size: 26px;
  line-height: 1;
  color: var(--amber);
  opacity: .85;
}

.page-contact .co-step__title {
  margin: 12px 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--cream);
}

.page-contact .co-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--smoke);
}

.page-contact .co-step p a {
  color: var(--amber-lt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .co-flow__media {
  margin: clamp(28px, 4vw, 48px) 0 0;
}

/* ---------- 响应说明 ---------- */
.page-contact .co-response {
  padding: clamp(34px, 5vw, 62px) 0;
  background: linear-gradient(135deg, rgba(199, 69, 42, .09), transparent 55%), rgba(5, 11, 18, .5);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .co-response__inner {
  display: grid;
  gap: clamp(24px, 3.6vw, 48px);
  align-items: start;
}

.page-contact .co-response__intro {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--smoke);
}

.page-contact .co-response__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .co-response__item {
  padding: 18px 0 18px 20px;
  border-left: 2px solid var(--line);
  transition: border-color .25s var(--ease);
}

.page-contact .co-response__item:hover {
  border-left-color: var(--cinnabar);
}

.page-contact .co-response__title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--cream);
}

.page-contact .co-response__item p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--smoke);
}

.page-contact .co-response__item p a {
  color: var(--amber-lt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 安徽本地 ---------- */
.page-contact .co-anhui {
  padding: clamp(40px, 6vw, 78px) 0;
}

.page-contact .co-anhui__inner {
  display: grid;
  gap: clamp(24px, 3.6vw, 46px);
  align-items: center;
}

.page-contact .co-anhui__text p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-text);
}

.page-contact .co-anhui__addr {
  display: inline-block;
  margin-top: 24px;
  padding: 12px 18px;
  font-size: 15px;
  color: var(--amber-lt);
  border: 1px solid rgba(232, 163, 61, .45);
  border-left: 3px solid var(--amber);
  background: var(--co-amber-soft);
}

.page-contact .co-anhui__media {
  margin: 0;
}

/* ---------- 合作问答 ---------- */
.page-contact .co-faq {
  padding: 0 0 clamp(40px, 6vw, 74px);
}

.page-contact .co-faq__grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-contact .co-qa {
  padding: 20px 0 20px 20px;
  border-left: 3px solid var(--line);
  transition: border-color .25s var(--ease);
}

.page-contact .co-qa:hover {
  border-left-color: var(--amber);
}

.page-contact .co-qa__q {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--cream);
}

.page-contact .co-qa__a {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--smoke);
}

/* ---------- 收尾 ---------- */
.page-contact .co-tail {
  padding: 0 0 clamp(44px, 6vw, 78px);
}

.page-contact .co-tail__inner {
  padding: clamp(20px, 3vw, 34px);
  border-top: 3px solid var(--amber);
  background: linear-gradient(180deg, var(--co-amber-soft), transparent 80%);
}

.page-contact .co-tail__text {
  margin: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--body-text);
}

.page-contact .co-tail__text a {
  color: var(--amber-lt);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ---------- 图片容器兜底 ---------- */
.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 窄屏 ---------- */
@media (max-width: 560px) {
  .page-contact .co-hero__title {
    max-width: none;
  }

  .page-contact .co-card {
    clip-path: none;
    border-left: 3px solid var(--amber);
  }

  .page-contact .co-step {
    padding: 18px 16px;
  }

  .page-contact .co-anhui__addr {
    display: block;
    word-break: break-word;
  }
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-contact .co-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .co-faq__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(26px, 3.6vw, 52px);
  }
}

@media (min-width: 900px) {
  .page-contact .co-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, .85fr);
  }

  .page-contact .co-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .co-step {
    background: none;
    padding: 24px clamp(14px, 2vw, 26px) 6px 0;
    border-top: 2px solid var(--line);
  }

  .page-contact .co-step + .co-step {
    padding-left: clamp(16px, 2vw, 28px);
    border-left: 1px solid var(--line);
  }

  .page-contact .co-step:hover {
    background: rgba(232, 163, 61, .05);
    border-top-color: var(--amber);
  }

  .page-contact .co-response__inner {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  }

  .page-contact .co-anhui__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-card,
  .page-contact .co-toc__link,
  .page-contact .co-response__item,
  .page-contact .co-qa,
  .page-contact .co-step {
    transition: none;
  }

  .page-contact .co-card:hover {
    transform: none;
  }
}