.page-contact {
  --pc-rule: rgba(167, 184, 201, .3);
  --pc-shadow: 8px 8px 0 rgba(2, 9, 15, .55);
}

.page-contact .contact-crumbs {
  padding-top: clamp(14px, 3vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: clamp(20px, 4vw, 44px) 0 0;
}

.page-contact .contact-hero__grid {
  row-gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-contact .contact-hero__copy .eyebrow {
  margin: 0;
}

.page-contact .contact-hero__copy h1 {
  margin: 14px 0 0;
  font-size: clamp(36px, 6.2vw, 84px);
  line-height: 1.03;
  letter-spacing: -.045em;
  font-weight: 900;
  color: var(--white);
}

.page-contact .contact-hero__copy h1 em {
  font-style: normal;
  color: var(--orange);
}

.page-contact .contact-hero__copy .lede {
  margin-top: 18px;
  max-width: 54ch;
  color: var(--mist);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .contact-hero__hint {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 4px solid var(--ice);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ice);
  max-width: 52ch;
}

.page-contact .contact-hero__figure {
  margin: 0;
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 2px solid var(--black);
  box-shadow: var(--pc-shadow);
}

.page-contact .contact-hero__figure .media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-contact .contact-hero__band {
  height: 12px;
  margin-top: clamp(26px, 4vw, 44px);
  background-image: repeating-linear-gradient(90deg,
    var(--orange) 0 14px, transparent 14px 22px,
    var(--coral) 22px 30px, transparent 30px 54px,
    var(--ice) 54px 62px, transparent 62px 86px,
    var(--lime) 86px 90px, transparent 90px 124px);
  opacity: .85;
}

/* ---------- 合作线路 + 联系卡 ---------- */
.page-contact .contact-main {
  row-gap: clamp(28px, 4vw, 44px);
  align-items: start;
}

.page-contact .routes-intro {
  margin-bottom: 22px;
}

.page-contact .routes-intro h2 {
  margin: 8px 0 0;
  color: var(--white);
}

.page-contact .routes-intro .prose {
  margin: 12px 0 0;
  max-width: 54ch;
  color: var(--mist);
}

.page-contact .route {
  position: relative;
  background: var(--ink-800);
  border: 2px solid var(--pc-rule);
  box-shadow: 6px 6px 0 rgba(2, 9, 15, .5);
  transition: border-color .18s ease;
}

.page-contact .route + .route {
  margin-top: 14px;
}

.page-contact .route:hover {
  border-color: var(--ice);
}

.page-contact .route[open] {
  border-color: var(--orange);
}

.page-contact .route__summary {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no title"
    "no meta";
  gap: 4px 16px;
  padding: 18px 52px 18px 18px;
  cursor: pointer;
  list-style: none;
}

.page-contact .route__summary::-webkit-details-marker {
  display: none;
}

.page-contact .route__summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--ice);
}

.page-contact .route[open] .route__summary::after {
  content: "–";
  color: var(--orange);
}

.page-contact .route__no {
  grid-area: no;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--orange);
}

.page-contact .route__title {
  grid-area: title;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .route__meta {
  grid-area: meta;
  font-size: 13px;
  color: var(--mist);
}

.page-contact .route__body {
  padding: 16px 18px 22px;
  border-top: 2px dashed var(--pc-rule);
}

.page-contact .route__body > p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .route__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .route__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--white);
}

.page-contact .route__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .58em;
  width: 9px;
  height: 9px;
  background: var(--ice);
  transform: rotate(45deg);
}

.page-contact .route__cta {
  margin-top: 14px !important;
  font-size: 13px;
  color: var(--lime) !important;
}

/* 联系卡 */
.page-contact .contact-stack {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .contact-card {
  position: relative;
  padding: 24px 20px 24px;
  background: var(--paper);
  color: var(--black);
  border: 2px solid var(--black);
  box-shadow: var(--pc-shadow);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  left: -2px;
  top: -2px;
  width: 88px;
  height: 6px;
  background: var(--orange);
}

.page-contact .contact-card__kicker {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #6b5a45;
}

.page-contact .contact-card__title {
  margin: 6px 0 20px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  letter-spacing: -.03em;
  color: var(--black);
}

.page-contact .contact-card__rows {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-contact .contact-card__row {
  display: grid;
  gap: 3px;
  padding-bottom: 14px;
  border-bottom: 1px dashed rgba(2, 9, 15, .28);
}

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

.page-contact .contact-card__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: #6b5a45;
}

.page-contact .contact-card__row dd {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 700;
  color: var(--black);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-card__link {
  color: #0a3d5c;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 1px;
  transition: background .16s ease, color .16s ease;
}

.page-contact .contact-card__link:hover,
.page-contact .contact-card__link:focus-visible {
  background: var(--orange);
  color: var(--black);
}

.page-contact .contact-card__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: #4a3f33;
}

.page-contact .contact-quick {
  display: grid;
  gap: 1px;
  background: var(--pc-rule);
  border: 2px solid var(--pc-rule);
}

.page-contact .contact-quick a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 13px 16px;
  background: var(--ink-800);
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background .18s ease, color .18s ease;
}

.page-contact .contact-quick a::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--orange);
}

.page-contact .contact-quick a:hover,
.page-contact .contact-quick a:focus-visible {
  background: var(--ink-700);
  color: var(--ice);
}

/* ---------- 咨询准备 ---------- */
.page-contact .prep-grid {
  row-gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-contact .prep-figure {
  margin: 0;
}

.page-contact .prep-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 2px solid var(--black);
  box-shadow: var(--pc-shadow);
}

.page-contact .prep-figure .media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-contact .prep-copy h2 {
  margin: 8px 0 0;
  color: var(--white);
}

.page-contact .prep-copy .prose {
  margin: 14px 0 0;
  max-width: 56ch;
  color: var(--mist);
}

.page-contact .prep-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 16px;
  background: var(--ink-800);
  border: 2px solid var(--pc-rule);
  border-left: 6px solid var(--ice);
}

.page-contact .prep-item__no {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--lime);
}

.page-contact .prep-item h3 {
  margin: 0;
  font-size: 17px;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .prep-item p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .prep-note {
  margin: 18px 0 0;
  padding: 14px 16px;
  background: var(--ink-800);
  border-left: 6px solid var(--orange);
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

/* ---------- 洽谈流程 ---------- */
.page-contact .flow {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .flow__step {
  position: relative;
  padding: 22px 18px 24px;
  background: var(--ink-800);
  border: 2px solid var(--pc-rule);
  border-top: 5px solid var(--ice);
  transition: border-color .18s ease, transform .18s ease;
}

.page-contact .flow__step:nth-child(1) { border-top-color: var(--orange); }
.page-contact .flow__step:nth-child(2) { border-top-color: var(--coral); }
.page-contact .flow__step:nth-child(3) { border-top-color: var(--ice); }
.page-contact .flow__step:nth-child(4) { border-top-color: var(--lime); }

.page-contact .flow__step:hover {
  transform: translateY(-3px);
}

.page-contact .flow__no {
  display: block;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--white);
}

.page-contact .flow__step h3 {
  margin: 12px 0 0;
  font-size: 17px;
  color: var(--white);
}

.page-contact .flow__step p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 媒体与社群 ---------- */
.page-contact .collab {
  display: grid;
  gap: 22px;
}

.page-contact .collab__copy h2 {
  margin: 8px 0 0;
  color: var(--white);
}

.page-contact .collab__copy .prose {
  margin: 14px 0 0;
  max-width: 54ch;
  color: var(--mist);
}

.page-contact .collab__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .collab__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
}

.page-contact .collab__list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .collab__links {
  padding: 22px 20px 24px;
  background: var(--paper);
  color: var(--black);
  border: 2px solid var(--black);
  box-shadow: var(--pc-shadow);
}

.page-contact .collab__links h3 {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--black);
}

.page-contact .collab__links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(2, 9, 15, .22);
}

.page-contact .collab__links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  background: var(--paper);
  color: var(--black);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: background .16s ease, color .16s ease;
}

.page-contact .collab__links a .mono {
  font-size: 12px;
  font-weight: 400;
  color: #6b5a45;
}

.page-contact .collab__links a:hover,
.page-contact .collab__links a:focus-visible {
  background: var(--ink-900);
  color: var(--ice);
}

.page-contact .collab__links a:hover .mono,
.page-contact .collab__links a:focus-visible .mono {
  color: var(--orange);
}

/* ---------- 备案与站点信息 ---------- */
.page-contact .contact-meta {
  padding: clamp(28px, 5vw, 56px) 0 clamp(40px, 6vw, 76px);
}

.page-contact .contact-meta__signal {
  height: 8px;
  margin-bottom: 24px;
  background-image: repeating-linear-gradient(90deg,
    var(--ice) 0 18px, transparent 18px 30px,
    var(--orange) 30px 36px, transparent 36px 62px);
  opacity: .8;
}

.page-contact .contact-meta__rows {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 38px;
}

.page-contact .contact-meta__cell dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-meta__cell dd {
  margin: 4px 0 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .contact-meta__note {
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-contact .flow {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .collab {
    grid-template-columns: 1.35fr 1fr;
    align-items: start;
  }

  .page-contact .prep-item {
    padding: 18px 20px;
  }
}

@media (min-width: 1024px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .contact-stack {
    position: sticky;
    top: 112px;
  }

  .page-contact .route__summary {
    padding: 20px 56px 20px 22px;
  }

  .page-contact .route__body {
    padding: 18px 22px 24px;
  }

  .page-contact .contact-card {
    padding: 26px 24px 26px;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero__copy {
    padding-right: 20px;
  }
}