.page-contact {
  background: var(--paper);
  color: var(--body-ink);
  font-family: var(--font-head);
  line-height: 1.75;
}

.page-contact *,
.page-contact *::before,
.page-contact *::after {
  box-sizing: border-box;
}

.page-contact .ct-shell {
  padding: 20px 18px 72px;
}

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--slate);
}

.page-contact .crumbs a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid var(--sand);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .crumbs a:hover {
  color: var(--amber);
  border-color: var(--amber);
}

.page-contact .crumbs__sep {
  color: var(--sand);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  margin-top: 22px;
  padding: 24px 0 30px;
  border-top: 4px solid var(--ink);
  border-bottom: 1px solid var(--sand);
  display: grid;
  gap: 26px;
}

.page-contact .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-contact .ct-hero__title {
  margin: 0 0 16px;
  font-size: clamp(29px, 7.2vw, 56px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: var(--ink);
}

.page-contact .ct-hero__lead {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  color: var(--body-ink);
}

.page-contact .ct-hero__panel {
  background: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  padding: 18px 16px;
}

.page-contact .ct-hero__meta {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 14px;
}

.page-contact .ct-hero__meta dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--amber-lt);
}

.page-contact .ct-hero__meta dd {
  margin: 5px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 4.4vw, 19px);
  font-weight: 700;
  color: var(--paper);
  line-height: 1.3;
  word-break: break-word;
}

/* ---------- 通用图区 ---------- */
.page-contact .ct-figure {
  margin: 30px 0 0;
}

.page-contact .ct-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  background: var(--paper-dim);
}

.page-contact .ct-figure__cap {
  margin: 12px 0 0;
  padding-left: 10px;
  border-left: 3px solid var(--sand);
  font-size: 13px;
  color: var(--slate);
}

/* ---------- 章节 ---------- */
.page-contact .ct-sec {
  margin-top: 56px;
}

.page-contact .sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding-top: 18px;
  border-top: 1px solid var(--sand);
  margin-bottom: 26px;
}

.page-contact .sec-head__no {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-contact .sec-head__title {
  margin: 0;
  font-size: clamp(21px, 4.6vw, 32px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
}

.page-contact .sec-head__lead {
  margin: 10px 0 0;
  max-width: 72ch;
  font-size: 15px;
  color: var(--slate);
}

/* ---------- 01 通道卡片 ---------- */
.page-contact .ct-lanes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .ct-lane {
  --ct-accent: var(--amber);
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 16px 16px;
  background: var(--paper);
  border: 2px solid var(--ink);
  border-top: 6px solid var(--ct-accent);
  box-shadow: var(--shadow-hard);
  transition: transform .24s var(--ease), box-shadow .24s var(--ease);
}

.page-contact .ct-lane:hover {
  transform: translateY(-2px);
  box-shadow: 8px 8px 0 var(--ink);
}

.page-contact .ct-lane--a { --ct-accent: var(--amber); }
.page-contact .ct-lane--b { --ct-accent: var(--stamp); }
.page-contact .ct-lane--c { --ct-accent: var(--teal); }
.page-contact .ct-lane--d { --ct-accent: var(--signal); }
.page-contact .ct-lane--e { --ct-accent: var(--slate); }

.page-contact .ct-lane__tag {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ct-accent);
  font-weight: 700;
}

.page-contact .ct-lane__title {
  margin: 0;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.35;
  color: var(--ink);
}

.page-contact .ct-lane__desc {
  margin: 0;
  font-size: 14.5px;
  color: var(--body-ink);
}

.page-contact .ct-lane__more {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--sand);
}

.page-contact .ct-lane__more summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .ct-lane__more summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-lane__more summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--ct-accent);
}

.page-contact .ct-lane__more[open] summary::before {
  content: "–";
}

.page-contact .ct-lane__more ul {
  margin: 10px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  font-size: 13.5px;
  color: var(--slate);
}

/* ---------- 02 联系方式 ---------- */
.page-contact .ct-reach {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-contact .ct-contact {
  margin: 0;
  border: 2px solid var(--ink);
  background: var(--paper-dim);
}

.page-contact .ct-contact__row {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--sand);
}

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

.page-contact .ct-contact__row dt {
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: .06em;
  color: var(--slate);
}

.page-contact .ct-contact__row dd {
  margin: 0;
}

.page-contact .ct-contact__val {
  font-size: clamp(15px, 4.2vw, 19px);
  font-weight: 700;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .ct-clock {
  padding: 18px;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  background: var(--paper);
}

.page-contact .ct-clock__cap {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--amber);
}

.page-contact .ct-clock__track {
  position: relative;
  height: 16px;
  border: 2px solid var(--ink);
  background: var(--sand);
  overflow: hidden;
}

.page-contact .ct-clock__fill {
  display: block;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(90deg, var(--amber) 0 10px, var(--amber-lt) 10px 20px);
}

.page-contact .ct-clock__scale {
  display: flex;
  justify-content: space-between;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  color: var(--slate);
}

.page-contact .ct-clock__note {
  margin: 14px 0 0;
  font-size: 13.5px;
  color: var(--slate);
}

.page-contact .ct-clock__note a {
  color: var(--stamp);
  text-decoration: none;
  border-bottom: 1px solid var(--stamp);
}

/* ---------- 03 售后节点 ---------- */
.page-contact .ct-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .ct-track__item {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--sand);
}

.page-contact .ct-track__item:last-child {
  border-bottom: 1px solid var(--sand);
}

.page-contact .ct-track__badge {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--signal);
}

.page-contact .ct-track__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 900;
  color: var(--ink);
}

.page-contact .ct-track__body p {
  margin: 0;
  font-size: 14.5px;
  color: var(--body-ink);
  max-width: 68ch;
}

/* ---------- 04 合作步骤 ---------- */
.page-contact .ct-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .ct-steps__item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  padding: 16px;
  border: 2px solid var(--ink);
  background: var(--paper-dim);
  transition: border-color .24s var(--ease);
}

.page-contact .ct-steps__item:hover {
  border-color: var(--amber-lt);
}

.page-contact .ct-steps__no {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--stamp);
}

.page-contact .ct-steps__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 900;
  color: var(--ink);
}

.page-contact .ct-steps__item p {
  margin: 0;
  font-size: 14px;
  color: var(--body-ink);
}

.page-contact .ct-steps__item a {
  color: var(--stamp);
  text-decoration: none;
  border-bottom: 1px solid var(--stamp);
}

/* ---------- 05 寄样与到访 ---------- */
.page-contact .ct-sample {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-contact .ct-sample__figure {
  margin: 0;
}

.page-contact .ct-sample__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  background: var(--paper-dim);
}

.page-contact .ct-sample__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 900;
  color: var(--ink);
  border-left: 5px solid var(--signal);
  padding-left: 10px;
}

.page-contact .ct-sample__body p {
  margin: 0 0 20px;
  font-size: 14.5px;
  color: var(--body-ink);
  max-width: 66ch;
}

.page-contact .ct-sample__foot {
  margin: 0;
}

.page-contact .ct-sample__foot a,
.page-contact .ct-next a {
  color: var(--stamp);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--stamp);
}

/* ---------- 06 准备清单 ---------- */
.page-contact .ct-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--sand);
}

.page-contact .ct-checklist__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--sand);
  font-size: 14.5px;
  color: var(--body-ink);
}

.page-contact .ct-checklist__no {
  font-size: 13px;
  font-weight: 700;
  color: var(--amber);
}

/* ---------- 收尾 ---------- */
.page-contact .ct-next {
  margin-top: 56px;
  padding: 22px 18px;
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  display: grid;
  gap: 12px;
}

.page-contact .ct-next p {
  margin: 0;
  font-size: 14.5px;
  color: var(--paper);
  max-width: 70ch;
}

.page-contact .ct-next a {
  color: var(--amber-lt);
  border-bottom-color: var(--amber-lt);
}

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

  .page-contact .ct-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }

  .page-contact .sec-head__no {
    font-size: 42px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-contact .ct-shell {
    padding: 34px 44px 96px;
  }

  .page-contact .ct-hero {
    grid-template-columns: minmax(0, 1fr) 312px;
    gap: 48px;
    align-items: start;
    padding: 40px 0 44px;
  }

  .page-contact .ct-reach {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-contact .ct-sample {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 36px;
    align-items: start;
  }

  .page-contact .ct-sec {
    margin-top: 84px;
  }

  .page-contact .sec-head {
    gap: 22px;
    margin-bottom: 32px;
  }

  .page-contact .sec-head__no {
    font-size: 54px;
  }
}

@media (min-width: 1040px) {
  .page-contact .ct-lanes {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .ct-lane--a { grid-column: span 2; }
  .page-contact .ct-lane--b { grid-column: span 2; }
  .page-contact .ct-lane--c { grid-column: span 2; }
  .page-contact .ct-lane--d { grid-column: span 4; }
  .page-contact .ct-lane--e { grid-column: span 2; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-lane,
  .page-contact .ct-steps__item {
    transition: none;
  }

  .page-contact .ct-lane:hover {
    transform: none;
  }
}