/* ==========================================================
   合作联系 /contact —— 页面专属样式
   作用域：.page-contact
   ========================================================== */

.page-contact {
  --pc-rule: 1px solid var(--line);
  --pc-gap: clamp(18px, 2.6vw, 34px);
  --pc-pad: clamp(20px, 3vw, 34px);
  position: relative;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(28px, 4.6vw, 56px) clamp(44px, 6.4vw, 80px);
  border-bottom: var(--pc-rule);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(23, 70, 111, 0.5) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(23, 70, 111, 0.32) 0 1px, transparent 1px 88px);
  -webkit-mask-image: radial-gradient(125% 95% at 16% 0%, #000 0%, transparent 76%);
  mask-image: radial-gradient(125% 95% at 16% 0%, #000 0%, transparent 76%);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 clamp(20px, 3.2vw, 34px);
  padding: 0;
  list-style: none;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .breadcrumb li + li::before {
  content: "/";
  margin-right: 0.55rem;
  color: var(--line);
}

.page-contact .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-contact .breadcrumb [aria-current="page"] {
  color: var(--white);
}

.page-contact .contact-hero h1 {
  margin: 0 0 clamp(18px, 2.6vw, 30px);
  max-width: 19ch;
  font-size: clamp(2rem, 5.6vw, 3.6rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .contact-hero__lead {
  max-width: 36em;
  margin: 0;
  font-size: clamp(1rem, 1.3vw, 1.0625rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .contact-hero__routes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(30px, 4.6vw, 52px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: var(--pc-rule);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .contact-hero__routes li {
  background: var(--night);
}

.page-contact .contact-hero__routes a {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 44px;
  padding: 20px 22px;
  color: var(--mist);
  text-decoration: none;
  transition: background 0.22s var(--ease), color 0.22s var(--ease);
}

.page-contact .contact-hero__routes a:hover,
.page-contact .contact-hero__routes a:focus-visible {
  background: var(--lake);
  color: var(--white);
}

.page-contact .contact-hero__routes-no {
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--lime);
}

.page-contact .contact-hero__routes-text {
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ---------- 合作方向 ---------- */

.page-contact .contact-dirs__head {
  margin-bottom: clamp(26px, 3.6vw, 44px);
}

.page-contact .contact-dirs__head h2 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.55rem, 3.2vw, 2.3rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .contact-dirs__head .prose {
  margin: 0;
  max-width: 34em;
  color: var(--mist);
}

.page-contact .contact-dirs__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.4vw, 44px);
}

.page-contact .contact-dirs__list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* 可展开的合作条目 */

.page-contact .dir-item {
  border: var(--pc-rule);
  border-left: 3px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(14, 42, 71, 0.55), rgba(6, 20, 27, 0.92));
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-contact .dir-item:hover {
  border-left-color: var(--orange);
}

.page-contact .dir-item[open] {
  border-left-color: var(--lime);
  background: linear-gradient(180deg, rgba(14, 42, 71, 0.92), rgba(6, 20, 27, 1));
}

.page-contact .dir-item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 14px;
  min-height: 44px;
  padding: 18px 22px;
  cursor: pointer;
  list-style: none;
}

.page-contact .dir-item summary::-webkit-details-marker {
  display: none;
}

.page-contact .dir-item summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -3px;
}

.page-contact .dir-item__no {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--line);
  transition: color 0.24s var(--ease);
}

.page-contact .dir-item[open] .dir-item__no,
.page-contact .dir-item:hover .dir-item__no {
  color: var(--lime);
}

.page-contact .dir-item__title {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .dir-item__hint {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--mist);
  text-align: right;
}

.page-contact .dir-item__chev {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-contact .dir-item__chev::before,
.page-contact .dir-item__chev::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: var(--lime);
  transform: translateY(-50%);
  transition: transform 0.24s var(--ease), opacity 0.24s var(--ease);
}

.page-contact .dir-item__chev::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-contact .dir-item[open] .dir-item__chev::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.page-contact .dir-item__body {
  padding: 18px 22px 24px;
  border-top: 1px dashed var(--line);
}

.page-contact .dir-item__body dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

.page-contact .dir-item__body dl > div {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 14px;
}

.page-contact .dir-item__body dt {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--orange);
  padding-top: 0.25em;
}

.page-contact .dir-item__body dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

/* 联系信息卡 */

.page-contact .contact-card {
  position: relative;
  padding: calc(var(--pc-pad) + 8px) var(--pc-pad) var(--pc-pad);
  border: 1px solid var(--graphite);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--graphite);
  box-shadow: var(--shadow-paper);
  overflow: hidden;
}

.page-contact .contact-card__strip {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 7px;
  background: linear-gradient(90deg, var(--lime) 0 34%, var(--orange) 34% 66%, var(--lake) 66% 100%);
}

.page-contact .contact-card__kicker {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lake);
}

.page-contact .contact-card h3 {
  margin: 0 0 1.1rem;
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--night);
}

.page-contact .contact-card__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(42, 50, 56, 0.22);
  border-top: 1px solid rgba(42, 50, 56, 0.22);
  border-bottom: 1px solid rgba(42, 50, 56, 0.22);
}

.page-contact .contact-card__list li {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 14px 2px;
  background: var(--paper);
}

.page-contact .contact-card__key {
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--graphite);
}

.page-contact .contact-card__val {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--night);
  word-break: break-all;
}

.page-contact .contact-card__note {
  margin: 1.1rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--graphite);
}

.page-contact .contact-card__stamp {
  display: inline-block;
  margin: 1.1rem 0 0;
  padding: 5px 12px;
  border: 1px solid var(--lake);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--lake);
}

/* ---------- 四步路线带 ---------- */

.page-contact .contact-steps__head {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-contact .contact-steps__head h2 {
  margin: 0;
  font-size: clamp(1.55rem, 3.2vw, 2.3rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .route-band {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .route-band__item {
  position: relative;
  padding: 20px 20px 22px;
  border: var(--pc-rule);
  border-radius: var(--radius);
  background: rgba(14, 42, 71, 0.42);
}

.page-contact .route-band__dot {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--lime);
  color: var(--night);
  font-size: 0.875rem;
  font-weight: 800;
}

.page-contact .route-band__title {
  margin: 0 0 0.55rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .route-band__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 客服通道 ---------- */

.page-contact .contact-help__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-contact .contact-help__text h2 {
  margin: 0 0 0.9rem;
  font-size: clamp(1.55rem, 3.2vw, 2.3rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .contact-help__text .prose {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  max-width: 34em;
  color: var(--mist);
}

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

.page-contact .contact-help__items li {
  display: grid;
  gap: 8px;
  padding-left: 16px;
  border-left: 2px solid var(--line);
}

.page-contact .contact-help__tag {
  justify-self: start;
}

.page-contact .contact-help__items p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-help__line {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 0.875rem;
  line-height: 1.9;
  color: var(--mist);
  word-break: break-word;
}

.page-contact .contact-help__line .num {
  color: var(--white);
}

.page-contact .contact-help__media {
  position: relative;
  margin: 0;
  border: var(--pc-rule);
  border-radius: var(--radius);
  background: var(--lake);
  overflow: hidden;
}

.page-contact .contact-help__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: contrast(1.08) saturate(0.94) brightness(0.86);
}

/* ---------- 办公地点与资质 ---------- */

.page-contact .contact-place__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-contact .contact-place__media {
  position: relative;
  margin: 0;
  border: var(--pc-rule);
  border-radius: var(--radius);
  background: var(--lake);
  overflow: hidden;
}

.page-contact .contact-place__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: contrast(1.1) saturate(0.9) brightness(0.78);
}

.page-contact .contact-place__panel h2 {
  margin: 0 0 0.9rem;
  font-size: clamp(1.55rem, 3.2vw, 2.3rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .contact-place__panel .prose {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  max-width: 34em;
  color: var(--mist);
}

.page-contact .contact-place__meta {
  display: grid;
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: var(--pc-rule);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .contact-place__meta > div {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 18px;
  background: var(--night);
}

.page-contact .contact-place__meta dt {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--orange);
  padding-top: 0.3em;
}

.page-contact .contact-place__meta dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--white);
  word-break: break-word;
}

.page-contact .contact-place__foot {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-place__foot a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(183, 241, 58, 0.45);
  transition: border-color 0.2s var(--ease);
}

.page-contact .contact-place__foot a:hover,
.page-contact .contact-place__foot a:focus-visible {
  border-bottom-color: var(--lime);
}

/* ---------- 响应时间 ---------- */

.page-contact .sla-band {
  display: grid;
  gap: clamp(22px, 3vw, 44px);
  padding: clamp(24px, 3.4vw, 44px);
  border: var(--pc-rule);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(14, 42, 71, 0.9), rgba(6, 20, 27, 0.95));
}

.page-contact .sla-band__clock {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-contact .sla-band__time {
  font-size: clamp(1.9rem, 4.4vw, 2.9rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.1;
  color: var(--lime);
}

.page-contact .sla-band__days {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-contact .sla-band__notes h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .sla-band__notes ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .sla-band__notes li {
  padding-left: 16px;
  border-left: 2px solid var(--line);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .sla-band__notes strong {
  display: block;
  margin-bottom: 0.15rem;
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-contact .sla-band__tip {
  margin: 18px 0 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--mist);
  opacity: 0.85;
}

/* ---------- 媒体查询 ---------- */

@media (max-width: 800px) {
  .page-contact .contact-hero__routes {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-contact .dir-item summary {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 12px;
    padding: 16px 16px;
  }

  .page-contact .dir-item__hint {
    display: none;
  }

  .page-contact .dir-item__body {
    padding: 16px 16px 20px;
  }

  .page-contact .dir-item__body dl > div,
  .page-contact .contact-place__meta > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-contact .dir-item__body dt,
  .page-contact .contact-place__meta dt {
    padding-top: 0;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-dirs__grid {
    grid-template-columns: minmax(0, 7fr) minmax(280px, 3fr);
    align-items: start;
  }

  .page-contact .contact-card {
    position: sticky;
    top: 96px;
  }

  .page-contact .route-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    position: relative;
  }

  .page-contact .route-band::before {
    content: "";
    position: absolute;
    top: 37px;
    left: 8%;
    right: 8%;
    height: 2px;
    background: linear-gradient(90deg, var(--line), var(--lime) 45%, var(--orange) 75%, var(--line));
    opacity: 0.75;
  }

  .page-contact .route-band__item {
    border: 0;
    border-left: var(--pc-rule);
    border-radius: 0;
    background: transparent;
    padding: 0 22px 0 22px;
  }

  .page-contact .route-band__item:last-child {
    border-right: var(--pc-rule);
  }

  .page-contact .route-band__dot {
    position: relative;
    z-index: 1;
    border: 3px solid var(--night);
    box-shadow: 0 0 0 2px var(--lime);
  }

  .page-contact .contact-help__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-contact .contact-place__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-contact .contact-place__media {
    order: -1;
  }

  .page-contact .sla-band {
    grid-template-columns: minmax(220px, 3fr) minmax(0, 8fr);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-contact .route-band__item {
    padding-inline: 28px;
  }
}