.page-contact {
  --ct-line: rgba(154, 167, 199, 0.22);
  --ct-line-strong: rgba(138, 92, 255, 0.46);
  --ct-card: #141B36;
  --ct-card-soft: rgba(20, 27, 54, 0.72);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  top: -22%;
  right: -34%;
  width: 70%;
  height: 148%;
  background: linear-gradient(150deg, rgba(138, 92, 255, 0.30), rgba(49, 213, 232, 0.13) 54%, rgba(11, 16, 32, 0) 82%);
  transform: skewX(-14deg);
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-hero > * {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: 34px;
  margin-top: 30px;
}

.page-contact .contact-hero h1 {
  max-width: 17ch;
  margin-top: 12px;
}

.page-contact .contact-hero .bh-lede {
  margin-top: 20px;
  max-width: 46ch;
}

.page-contact .contact-strip {
  border: 1px solid var(--ct-line);
  border-radius: var(--bh-r-lg);
  padding: 8px;
  background: var(--ct-card-soft);
}

.page-contact .contact-strip a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  border-radius: var(--bh-r-md);
  color: var(--bh-text);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.4;
  transition: background 200ms var(--bh-ease), transform 200ms var(--bh-ease);
}

.page-contact .contact-strip a + a {
  border-top: 1px dashed var(--ct-line);
}

.page-contact .contact-strip a:hover,
.page-contact .contact-strip a:focus-visible {
  background: rgba(138, 92, 255, 0.18);
  transform: translateX(3px);
}

.page-contact .contact-strip__k {
  color: var(--bh-text-2);
}

.page-contact .contact-strip__v {
  color: var(--bh-cyan);
  font-weight: 700;
  white-space: nowrap;
}

/* ---------- 需求分流 ---------- */

.page-contact .contact-route-section .bh-lede {
  max-width: 52ch;
  margin-top: 14px;
}

.page-contact .contact-route {
  display: grid;
  gap: 1px;
  margin-top: 42px;
  background: var(--ct-line);
  border: 1px solid var(--ct-line);
  border-radius: var(--bh-r-xl);
  overflow: hidden;
}

.page-contact .contact-route__col {
  background: var(--ct-card);
  padding: 28px 24px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-contact .contact-route__no {
  font-family: var(--bh-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bh-violet);
}

.page-contact .contact-route__title {
  margin: 0;
  font-size: 21px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--bh-text);
}

.page-contact .contact-route__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--bh-text-2);
}

.page-contact .contact-route__points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--bh-text-2);
}

.page-contact .contact-route__points li {
  position: relative;
  padding-left: 16px;
}

.page-contact .contact-route__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--bh-cyan);
}

.page-contact .contact-route__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 6px;
}

/* ---------- 客服渠道 ---------- */

.page-contact .contact-channels .bh-h2 {
  margin-top: 12px;
}

.page-contact .contact-channels__grid {
  display: grid;
  gap: 30px;
  margin-top: 38px;
  align-items: start;
}

.page-contact .contact-paper {
  background: linear-gradient(180deg, #F3EDE0, #E7DFCE);
  color: #1A1512;
  border-radius: var(--bh-r-xl);
  padding: clamp(24px, 4.5vw, 40px);
  box-shadow: 0 30px 70px -40px rgba(0, 0, 0, 0.95);
}

.page-contact .contact-paper--compact {
  border-radius: var(--bh-r-lg);
  padding: clamp(20px, 3.5vw, 30px);
}

.page-contact .contact-paper__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #6E6255;
  font-family: var(--bh-font-mono);
}

.page-contact .contact-paper__label + .contact-paper__value {
  margin-top: 8px;
}

.page-contact .contact-paper__value {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 25px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #1A1512;
  word-break: break-word;
}

.page-contact .contact-paper__value--mail {
  font-family: var(--bh-font-mono);
  font-size: clamp(15px, 1.9vw, 19px);
  letter-spacing: 0;
  color: #4B2E86;
}

.page-contact .contact-paper__note {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #3E362D;
  max-width: 52ch;
}

.page-contact .contact-paper__note + .contact-paper__label {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid rgba(26, 21, 18, 0.16);
}

.page-contact .contact-paper__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(26, 21, 18, 0.16);
}

.page-contact .contact-paper .bh-btn--primary {
  background: #1A1512;
  color: #F3EDE0;
  border-color: #1A1512;
}

.page-contact .contact-paper .bh-btn--ghost {
  color: #1A1512;
  border-color: rgba(26, 21, 18, 0.35);
}

.page-contact .contact-paper .bh-btn--ghost:hover,
.page-contact .contact-paper .bh-btn--ghost:focus-visible {
  border-color: #4B2E86;
  color: #4B2E86;
}

.page-contact .contact-paper .bh-copy__status {
  color: #2C6E4F;
}

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

.page-contact .contact-channels__figure .bh-media {
  border-radius: var(--bh-r-lg);
  overflow: hidden;
  border: 1px solid var(--ct-line);
}

.page-contact .contact-callout {
  margin-top: 38px;
  padding: 26px 26px 28px;
  border: 1px solid var(--ct-line-strong);
  border-radius: var(--bh-r-lg);
  background: linear-gradient(140deg, rgba(49, 213, 232, 0.10), rgba(20, 27, 54, 0.5) 62%);
}

.page-contact .contact-callout__title {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 800;
  color: var(--bh-cyan);
  letter-spacing: -0.01em;
}

.page-contact .contact-callout__text {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--bh-text-2);
  max-width: 68ch;
}

.page-contact .contact-callout__text:last-child {
  margin-bottom: 0;
}

/* ---------- 合作方向 ---------- */

.page-contact .contact-partnership .bh-lede {
  max-width: 60ch;
  margin-top: 14px;
}

.page-contact .coop-list {
  display: grid;
  gap: 14px;
  margin-top: 40px;
}

.page-contact .coop-item {
  border: 1px solid var(--ct-line);
  border-radius: var(--bh-r-pill);
  background: var(--ct-card);
  overflow: hidden;
  transition: border-radius 260ms var(--bh-ease), border-color 260ms var(--bh-ease), background 260ms var(--bh-ease);
}

.page-contact .coop-item[open] {
  border-radius: var(--bh-r-lg);
  border-color: var(--ct-line-strong);
}

.page-contact .coop-item > summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 24px;
  cursor: pointer;
  list-style: none;
  color: var(--bh-text);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
}

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

.page-contact .coop-item > summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--ct-line-strong);
  color: var(--bh-amber);
  font-size: 17px;
  font-weight: 700;
  line-height: 1;
  transition: transform 260ms var(--bh-ease);
}

.page-contact .coop-item[open] > summary::after {
  content: "–";
  transform: rotate(180deg);
}

.page-contact .coop-item > summary:focus-visible {
  outline: 2px solid var(--bh-cyan);
  outline-offset: -2px;
}

.page-contact .coop-item__no {
  font-family: var(--bh-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--bh-violet);
  flex: none;
}

.page-contact .coop-item__name {
  flex: none;
}

.page-contact .coop-item__hint {
  display: none;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--bh-mist);
  border: 1px solid var(--ct-line);
  border-radius: var(--bh-r-pill);
  padding: 3px 10px;
}

.page-contact .coop-item__body {
  padding: 4px 24px 24px;
  border-top: 1px dashed var(--ct-line);
  margin: 0 24px;
  padding-left: 0;
  padding-right: 0;
}

.page-contact .coop-item__body p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--bh-text-2);
  max-width: 68ch;
}

.page-contact .contact-partnership__foot {
  margin: 32px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--bh-mist);
}

/* ---------- 提案 ---------- */

.page-contact .contact-proposal__grid {
  display: grid;
  gap: 30px;
  margin-top: 38px;
}

.page-contact .contact-checklist__lead {
  margin: 0 0 18px;
  font-size: 15px;
  color: var(--bh-text-2);
}

.page-contact .prop-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ct-line);
  border: 1px solid var(--ct-line);
  border-radius: var(--bh-r-lg);
  overflow: hidden;
}

.page-contact .prop-list li {
  background: var(--ct-card);
}

.page-contact .prop-list label {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 20px 22px;
  cursor: pointer;
}

.page-contact .prop-list input {
  flex: none;
  margin: 3px 0 0;
  width: 18px;
  height: 18px;
  accent-color: #F2B33D;
}

.page-contact .prop-list strong {
  display: block;
  font-size: 16px;
  color: var(--bh-text);
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}

.page-contact .prop-list em {
  display: block;
  font-style: normal;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--bh-text-2);
}

.page-contact .prop-list input:checked + span strong {
  color: var(--bh-amber);
}

.page-contact .contact-proposal__side {
  display: grid;
  gap: 22px;
  align-content: start;
}

.page-contact .contact-title-format {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .contact-title-format li {
  padding: 11px 14px;
  border-radius: var(--bh-r-md);
  background: rgba(26, 21, 18, 0.07);
  border: 1px solid rgba(26, 21, 18, 0.14);
  font-size: 13.5px;
  line-height: 1.5;
  color: #33291F;
  word-break: break-word;
}

.page-contact .contact-mini {
  border: 1px solid var(--ct-line);
  border-radius: var(--bh-r-lg);
  padding: 24px 24px 26px;
  background: rgba(20, 27, 54, 0.55);
}

.page-contact .contact-mini__title {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 800;
  color: var(--bh-text);
}

.page-contact .contact-mini__text {
  margin: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--bh-text-2);
}

/* ---------- 时效 ---------- */

.page-contact .contact-sla__grid {
  display: grid;
  gap: 1px;
  margin-top: 38px;
  background: var(--ct-line);
  border: 1px solid var(--ct-line);
  border-radius: var(--bh-r-xl);
  overflow: hidden;
}

.page-contact .contact-sla__item {
  background: var(--ct-card);
  padding: 30px 24px 28px;
}

.page-contact .contact-sla__item .bh-num {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-contact .contact-sla__unit {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--bh-mist);
  font-family: var(--bh-font-sans);
}

.page-contact .contact-sla__item .bh-h3 {
  margin: 16px 0 10px;
}

.page-contact .contact-sla__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--bh-text-2);
}

.page-contact .contact-sla__foot {
  margin: 28px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--bh-mist);
}

/* ---------- 地址 ---------- */

.page-contact .contact-address__grid {
  display: grid;
  gap: 30px;
  margin-top: 38px;
  align-items: start;
}

.page-contact .contact-address__card {
  border: 1px solid var(--ct-line);
  border-radius: var(--bh-r-xl);
  padding: clamp(24px, 4vw, 36px);
  background: linear-gradient(160deg, rgba(138, 92, 255, 0.14), rgba(20, 27, 54, 0.72) 58%);
}

.page-contact .contact-address__k {
  margin: 0;
  font-family: var(--bh-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bh-mist);
}

.page-contact .contact-address__v {
  margin: 8px 0 24px;
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--bh-text);
  word-break: break-word;
}

.page-contact .contact-address__v--mono {
  font-family: var(--bh-font-mono);
  font-size: clamp(15px, 1.8vw, 18px);
  font-weight: 700;
  color: var(--bh-amber);
  letter-spacing: 0;
}

.page-contact .contact-address__note {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--bh-text-2);
  max-width: 56ch;
}

.page-contact .contact-address__note:last-child {
  margin-bottom: 0;
}

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

.page-contact .contact-address__figure .bh-media {
  border-radius: var(--bh-r-lg);
  overflow: hidden;
  border: 1px solid var(--ct-line);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .coop-item__hint {
    display: inline-block;
  }

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

  .page-contact .prop-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: end;
  }

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

  .page-contact .contact-channels__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: stretch;
  }

  .page-contact .contact-channels__figure {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
  }

  .page-contact .contact-proposal__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
  }

  .page-contact .contact-address__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 40px;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-route__col {
    padding: 34px 30px 30px;
  }

  .page-contact .coop-item > summary {
    padding: 20px 30px;
  }

  .page-contact .coop-item__body {
    margin: 0 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-strip a,
  .page-contact .coop-item,
  .page-contact .coop-item > summary::after {
    transition: none;
  }

  .page-contact .contact-strip a:hover,
  .page-contact .contact-strip a:focus-visible {
    transform: none;
  }

  .page-contact .coop-item[open] > summary::after {
    transform: none;
  }
}