.page-contact {
  --step-rail: 52px;
  --contact-steel-line: rgba(127, 148, 168, 0.42);
  --contact-grid-cell: 72px;
}

@media (min-width: 960px) {
  .page-contact {
    --step-rail: 96px;
  }
}

/* ---------- 面包屑与通用小节头 ---------- */

.page-contact .breadcrumbs {
  padding-top: 20px;
}

.page-contact .contact-head {
  max-width: 46rem;
}

.page-contact .section__index {
  color: var(--copper);
  letter-spacing: 0.2em;
}

.page-contact .section__title {
  font-size: clamp(26px, 4.2vw, 40px);
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-contact .section__lede {
  color: var(--sand);
  font-size: 16px;
  line-height: 1.85;
  max-width: 38em;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  padding-top: 12px;
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-contact .contact-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--copper-lit);
}

.page-contact .contact-hero__eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--copper);
}

.page-contact .contact-hero__title {
  margin: 0 0 20px;
  font-size: clamp(30px, 6.2vw, 54px);
  line-height: 1.18;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--mist);
}

.page-contact .contact-hero__lede {
  margin: 0 0 28px;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.9;
  color: var(--sand);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 34px;
}

.page-contact .contact-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 18px 20px;
  margin: 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-hero__fact dt {
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-contact .contact-hero__fact dd {
  margin: 0;
  font-size: 16px;
  color: var(--copper-lit);
}

.page-contact .contact-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 110px 22px 22px 22px;
  overflow: hidden;
  background: var(--ink-2);
  aspect-ratio: 6 / 7;
}

.page-contact .contact-hero__figure .media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-contact .contact-hero__figure .media-frame__caption {
  color: var(--steel);
  font-size: 13px;
  letter-spacing: 0.06em;
}

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
    gap: 64px;
  }

  .page-contact .contact-hero__figure {
    aspect-ratio: 5 / 6;
  }
}

/* ---------- 三类合作方向 ---------- */

.page-contact .contact-directions {
  padding-top: 24px;
}

.page-contact .contact-directions__grid {
  display: grid;
  gap: 20px;
  margin-top: 34px;
}

.page-contact .contact-direction {
  display: flex;
  flex-direction: column;
  padding: 26px 22px 22px;
  border: 1px solid var(--contact-steel-line);
  border-radius: 20px 20px 20px 4px;
  background: linear-gradient(168deg, rgba(18, 38, 31, 0.92), rgba(11, 26, 22, 0.94));
}

.page-contact .contact-direction__num {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--steel);
}

.page-contact .contact-direction__title {
  margin: 0 0 12px;
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.page-contact .contact-direction__fit {
  margin: 0 0 14px;
  padding: 8px 12px;
  border-left: 2px solid var(--steel);
  font-size: 13px;
  line-height: 1.7;
  color: var(--sand);
  background: rgba(127, 148, 168, 0.08);
}

.page-contact .contact-direction__text {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sand);
}

.page-contact .contact-direction__more {
  margin-top: auto;
  border-top: 1px dashed var(--line);
  padding-top: 14px;
}

.page-contact .contact-direction__more summary {
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--copper-lit);
}

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

.page-contact .contact-direction__more summary::after {
  content: " ＋";
  font-family: var(--font-mono);
}

.page-contact .contact-direction__more[open] summary::after {
  content: " －";
}

.page-contact .contact-direction__list {
  margin: 14px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--sand);
}

.page-contact .contact-direction__list li::marker {
  color: var(--copper);
}

@media (min-width: 840px) {
  .page-contact .contact-directions__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

/* ---------- 四步流程 ---------- */

.page-contact .contact-flow__list {
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-step {
  position: relative;
  display: grid;
  grid-template-columns: var(--step-rail) minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px dashed var(--line);
}

.page-contact .contact-step:last-child {
  border-bottom: none;
}

.page-contact .contact-step::before {
  content: "";
  position: absolute;
  left: calc(var(--step-rail) / 2 - 1px);
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-contact .contact-step__num {
  position: relative;
  z-index: 1;
  align-self: start;
  padding: 4px 0;
  background: var(--ink);
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-contact .contact-step__title {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.4;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.page-contact .contact-step__text {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sand);
}

@media (min-width: 960px) {
  .page-contact .contact-step {
    align-items: center;
    padding: 28px 0;
  }

  .page-contact .contact-step__num {
    font-size: 26px;
    text-align: center;
    padding: 8px 0;
  }
}

/* ---------- 官方联系通道 ---------- */

.page-contact .contact-channels__grid {
  display: grid;
  gap: 28px;
  margin-top: 34px;
}

.page-contact .contact-channel {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-channel:first-child {
  border-top-color: var(--copper);
}

.page-contact .contact-channel__key {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--steel);
}

.page-contact .contact-channel__value {
  margin: 0 0 10px;
  font-size: clamp(16px, 3.4vw, 21px);
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--mist);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .contact-channel__note {
  margin: 0 0 14px;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--sand);
}

.page-contact .contact-channel__action {
  font-size: 13px;
  padding: 9px 16px;
}

.page-contact .contact-channels__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 22px 22px 96px 22px;
  overflow: hidden;
  background: var(--ink-2);
}

.page-contact .contact-channels__figure .media-frame__img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-contact .contact-channels__figure .media-frame__caption {
  color: var(--steel);
  font-size: 13px;
  letter-spacing: 0.06em;
}

@media (min-width: 920px) {
  .page-contact .contact-channels__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}

/* ---------- 到访与本地服务点 ---------- */

.page-contact .contact-visit__grid {
  display: grid;
  gap: 28px;
  margin-top: 34px;
}

.page-contact .contact-visit__panel {
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--copper);
  border-radius: 4px 20px 20px 4px;
  background: rgba(18, 38, 31, 0.78);
}

.page-contact .contact-visit__lead {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--sand);
}

.page-contact .contact-visit__cta {
  margin-top: 6px;
}

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

.page-contact .contact-visit__item {
  display: grid;
  gap: 8px;
  padding: 18px 18px 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: 16px 16px 16px 4px;
  background: var(--ink-2);
}

.page-contact .contact-visit__item strong {
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--copper-lit);
}

.page-contact .contact-visit__item span {
  font-size: 14px;
  line-height: 1.8;
  color: var(--sand);
}

@media (min-width: 760px) {
  .page-contact .contact-visit__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-contact .contact-visit__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 48px;
    align-items: start;
  }
}

/* ---------- 常见问题 ---------- */

.page-contact .contact-faq__list {
  margin-top: 30px;
  display: grid;
  gap: 0;
}

.page-contact .contact-faq__item {
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
}

.page-contact .contact-faq__item:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .contact-faq__item summary {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding-right: 40px;
  font-size: 17px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--mist);
}

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

.page-contact .contact-faq__item summary::after {
  content: "＋";
  position: absolute;
  right: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--amber);
}

.page-contact .contact-faq__item[open] summary::after {
  content: "－";
}

.page-contact .contact-faq__item p {
  margin: 14px 0 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--sand);
}

/* ---------- 底部收束带 ---------- */

.page-contact .contact-tail {
  position: relative;
  margin-top: 48px;
  padding: 56px 0 64px;
  background-color: var(--abyss);
  background-image:
    linear-gradient(rgba(127, 148, 168, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 148, 168, 0.1) 1px, transparent 1px),
    radial-gradient(120% 90% at 12% 0%, rgba(184, 115, 51, 0.2), transparent 62%);
  background-size: var(--contact-grid-cell) var(--contact-grid-cell), var(--contact-grid-cell) var(--contact-grid-cell), 100% 100%;
  border-top: 1px solid var(--line);
}

.page-contact .contact-tail__inner {
  display: grid;
  gap: 26px;
}

.page-contact .contact-tail__title {
  margin: 0 0 12px;
  font-size: clamp(22px, 4vw, 32px);
  line-height: 1.3;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-contact .contact-tail__text {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sand);
}

.page-contact .contact-tail__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 880px) {
  .page-contact .contact-tail__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 48px;
  }

  .page-contact .contact-tail__links {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-hero__figure,
  .page-contact .contact-direction,
  .page-contact .contact-step,
  .page-contact .contact-channel,
  .page-contact .contact-visit__item,
  .page-contact .contact-faq__item,
  .page-contact .contact-tail__inner > * {
    transition: none;
    transform: none;
  }
}
</main>