.page-contact {
  --contact-line: rgba(184, 135, 58, .42);
  --contact-grid: rgba(51, 65, 92, .8);
}

/* ===== 01 首屏 ===== */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: .3;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 11, 18, .82) 0%, rgba(14, 23, 48, .9) 46%, var(--ink) 100%),
    linear-gradient(90deg, rgba(14, 23, 48, .95) 0%, rgba(14, 23, 48, .42) 56%, rgba(14, 23, 48, .92) 100%);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 2;
  padding-top: calc(var(--header-h, 72px) + 2rem);
  padding-bottom: 3.25rem;
}

.page-contact .contact-hero__eyebrow {
  margin: 1.1rem 0 0;
  color: var(--copper-lit);
}

.page-contact .contact-hero__title {
  margin: .6rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 40px;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  margin: 1.1rem 0 0;
  max-width: 46ch;
  color: var(--text-soft);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: 1.75rem;
  margin-top: 2rem;
}

/* 联络铭牌 */
.page-contact .contact-plate {
  position: relative;
  color: var(--text-soft);
  background: linear-gradient(165deg, rgba(27, 42, 74, .96) 0%, rgba(14, 23, 48, .98) 100%);
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  padding: 1.4rem 1.25rem 1.15rem;
  box-shadow:
    inset 0 1px 0 rgba(242, 239, 233, .09),
    inset 0 -18px 30px -22px rgba(0, 0, 0, .95),
    0 24px 48px -34px rgba(0, 0, 0, .95);
}

.page-contact .contact-plate::before {
  content: "";
  position: absolute;
  left: 1.25rem;
  right: 1.25rem;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--copper), rgba(184, 135, 58, 0));
}

.page-contact .contact-plate__label {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--copper-lit);
}

.page-contact .contact-plate__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .contact-plate__item {
  display: grid;
  gap: .22rem;
  padding: .72rem 0;
  border-top: 1px solid rgba(51, 65, 92, .78);
}

.page-contact .contact-plate__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .contact-plate__key {
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-contact .contact-plate__val {
  font-size: 17px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-plate__foot {
  margin: 1.1rem 0 0;
  padding-top: .9rem;
  border-top: 1px dashed rgba(51, 65, 92, .9);
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* 右栏场景说明 */
.page-contact .contact-hero__aside-title {
  margin: 0 0 .9rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--contact-grid);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--paper);
}

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

.page-contact .contact-hero__aside-list li {
  display: grid;
  grid-template-columns: 1.6em minmax(0, 1fr);
  gap: .3rem .8rem;
  padding: .85rem 0;
  border-bottom: 1px dashed rgba(51, 65, 92, .7);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-contact .contact-hero__aside-list li:last-child {
  border-bottom: 0;
}

.page-contact .contact-hero__aside-key {
  color: var(--copper);
  font-size: 13px;
  letter-spacing: .12em;
  padding-top: .2rem;
}

/* ===== 02 需求提交要点（纸色分区） ===== */
.page-contact .contact-prep {
  background: var(--paper);
  color: var(--ink);
}

.page-contact .contact-prep .section-title,
.page-contact .contact-prep .chapter-index {
  color: var(--ink);
}

.page-contact .contact-prep .prose {
  color: #39445C;
}

.page-contact .contact-prep__grid {
  gap: 2.25rem 2rem;
}

.page-contact .contact-prep__list {
  margin: 1.5rem 0 0;
  padding: 0;
}

.page-contact .contact-prep__row {
  display: grid;
  gap: .32rem;
  padding: 1rem 0;
  border-top: 1px solid rgba(14, 23, 48, .14);
}

.page-contact .contact-prep__row:last-child {
  border-bottom: 1px solid rgba(14, 23, 48, .14);
}

.page-contact .contact-prep__row dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-contact .contact-prep__row dt::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 1px;
  margin-right: .6rem;
  vertical-align: middle;
  background: var(--copper);
}

.page-contact .contact-prep__row dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: #3B465E;
}

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

.page-contact .contact-prep__figure img,
.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 03 响应流程 ===== */
.page-contact .contact-flow {
  background: var(--ink-2);
}

.page-contact .contact-flow__lede {
  margin-top: .9rem;
  max-width: 48ch;
  color: var(--text-soft);
}

.page-contact .contact-flow__rail {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .contact-flow__step {
  border-top: 1px solid rgba(184, 135, 58, .35);
}

.page-contact .contact-flow__summary {
  position: relative;
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr);
  gap: .18rem .9rem;
  align-items: baseline;
  padding: 1.05rem 2.2rem 1.05rem 0;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .contact-flow__summary::marker {
  content: "";
}

.page-contact .contact-flow__summary::after {
  content: "+";
  position: absolute;
  right: .1rem;
  top: .95rem;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--copper-lit);
}

.page-contact .contact-flow__details[open] > .contact-flow__summary::after {
  content: "−";
}

.page-contact .contact-flow__num {
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--copper);
}

.page-contact .contact-flow__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--paper);
}

.page-contact .contact-flow__hint {
  grid-column: 2;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .contact-flow__body {
  margin: 0 0 1.25rem;
  padding: 0 2.2rem 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ===== 04 沟通场景 ===== */
.page-contact .contact-scene {
  background: var(--ink);
}

.page-contact .contact-scene__lede {
  margin-top: .9rem;
  max-width: 48ch;
  color: var(--text-soft);
}

.page-contact .contact-scene__switch {
  position: relative;
  margin-top: 1.75rem;
}

.page-contact .contact-scene__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-contact .contact-scene__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-contact .contact-scene__tab {
  flex: 1 1 auto;
  min-width: 7.5rem;
  padding: .72rem .9rem;
  text-align: center;
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--mist);
  background: rgba(27, 42, 74, .55);
  border: 1px solid var(--contact-grid);
  border-radius: var(--radius);
  cursor: pointer;
}

.page-contact .contact-scene__tab:hover {
  color: var(--paper);
  border-color: rgba(184, 135, 58, .7);
}

.page-contact #scene-1:checked ~ .contact-scene__tabs [for="scene-1"],
.page-contact #scene-2:checked ~ .contact-scene__tabs [for="scene-2"],
.page-contact #scene-3:checked ~ .contact-scene__tabs [for="scene-3"],
.page-contact #scene-4:checked ~ .contact-scene__tabs [for="scene-4"] {
  color: var(--ink);
  background: var(--copper-lit);
  border-color: var(--copper-lit);
}

.page-contact #scene-1:focus-visible ~ .contact-scene__tabs [for="scene-1"],
.page-contact #scene-2:focus-visible ~ .contact-scene__tabs [for="scene-2"],
.page-contact #scene-3:focus-visible ~ .contact-scene__tabs [for="scene-3"],
.page-contact #scene-4:focus-visible ~ .contact-scene__tabs [for="scene-4"] {
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

.page-contact .contact-scene__panels {
  margin-top: 1.4rem;
}

.page-contact .contact-scene__panel {
  display: none;
  padding: 1.35rem 1.2rem;
  background: rgba(27, 42, 74, .5);
  border-left: 2px solid var(--copper);
  border-radius: var(--radius);
}

.page-contact #scene-1:checked ~ .contact-scene__panels > .contact-scene__panel:nth-child(1),
.page-contact #scene-2:checked ~ .contact-scene__panels > .contact-scene__panel:nth-child(2),
.page-contact #scene-3:checked ~ .contact-scene__panels > .contact-scene__panel:nth-child(3),
.page-contact #scene-4:checked ~ .contact-scene__panels > .contact-scene__panel:nth-child(4) {
  display: block;
}

.page-contact .contact-scene__panel p {
  display: grid;
  grid-template-columns: 4.6em minmax(0, 1fr);
  gap: .3rem .9rem;
  margin: 0;
  padding: .62rem 0;
  border-top: 1px solid rgba(51, 65, 92, .6);
  font-size: 16px;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-contact .contact-scene__panel p:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .contact-scene__panel p:last-child {
  padding-bottom: 0;
}

.page-contact .contact-scene__key {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--copper-lit);
  padding-top: .3rem;
}

/* ===== 05 本地服务 ===== */
.page-contact .contact-harbin {
  background: var(--ink-2);
}

.page-contact .contact-harbin__grid {
  gap: 2rem 2rem;
}

.page-contact .contact-harbin .prose {
  color: var(--text-soft);
}

.page-contact .contact-harbin__stats {
  list-style: none;
  margin: 1.85rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .contact-harbin__stats .stat {
  display: grid;
  grid-template-columns: 5.5em minmax(0, 1fr);
  gap: .2rem 1rem;
  align-items: baseline;
  padding: .85rem 0;
  border-top: 1px solid var(--contact-grid);
}

.page-contact .contact-harbin__stats .stat:last-child {
  border-bottom: 1px solid var(--contact-grid);
}

.page-contact .contact-harbin__stats .stat__value {
  font-size: 28px;
  line-height: 1.1;
  color: var(--copper-lit);
}

.page-contact .contact-harbin__stats .stat__label {
  font-size: 15px;
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .contact-harbin__visual {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-contact .contact-range {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  border: 1px solid var(--contact-grid);
  border-radius: var(--radius);
  background: rgba(14, 23, 48, .6);
}

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

/* ===== 06 合同与结算（纸色分区） ===== */
.page-contact .contact-terms {
  background: var(--paper);
  color: var(--ink);
}

.page-contact .contact-terms .section-title,
.page-contact .contact-terms .chapter-index {
  color: var(--ink);
}

.page-contact .contact-terms .prose {
  color: #39445C;
}

.page-contact .contact-terms__list {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
}

.page-contact .contact-terms__item {
  display: grid;
  gap: .35rem;
  padding: 1.05rem 0;
  border-top: 1px solid rgba(14, 23, 48, .14);
}

.page-contact .contact-terms__item:last-child {
  border-bottom: 1px solid rgba(14, 23, 48, .14);
}

.page-contact .contact-terms__key {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

.page-contact .contact-terms__key::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 1px;
  margin-right: .6rem;
  vertical-align: middle;
  background: var(--copper);
}

.page-contact .contact-terms__body {
  font-size: 16px;
  line-height: 1.75;
  color: #3B465E;
}

/* ===== 07 下一步 ===== */
.page-contact .contact-next {
  background: var(--ink);
}

.page-contact .contact-next__panel {
  position: relative;
  padding: 2rem 1.25rem 2.25rem;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(27, 42, 74, .9) 0%, rgba(14, 23, 48, .95) 100%);
  box-shadow: inset 0 1px 0 rgba(242, 239, 233, .07);
}

.page-contact .contact-next__panel::before {
  content: "";
  position: absolute;
  left: 1.25rem;
  right: 1.25rem;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--copper), rgba(184, 135, 58, 0));
}

.page-contact .contact-next .lede {
  margin-top: .9rem;
  max-width: 52ch;
  color: var(--text-soft);
}

.page-contact .contact-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: 1.6rem;
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .page-contact .contact-hero__title {
    font-size: 52px;
  }

  .page-contact .contact-plate__item {
    grid-template-columns: 6.5em minmax(0, 1fr);
    align-items: baseline;
  }

  .page-contact .contact-plate {
    padding: 1.6rem 1.5rem 1.3rem;
  }

  .page-contact .contact-next__panel {
    padding: 2.75rem 2.5rem;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__title {
    font-size: 64px;
    max-width: 15em;
  }

  .page-contact .contact-hero__inner {
    padding-top: calc(var(--header-h, 72px) + 3rem);
    padding-bottom: 4.5rem;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 2.75rem;
    align-items: start;
    margin-top: 3rem;
  }

  .page-contact .contact-prep__grid {
    gap: 3.5rem 3rem;
    align-items: start;
  }

  .page-contact .contact-prep__row {
    grid-template-columns: 8em minmax(0, 1fr);
    gap: 0 1.5rem;
    align-items: baseline;
  }

  .page-contact .contact-flow__rail {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 1.5rem;
    position: relative;
    margin-top: 2.5rem;
  }

  .page-contact .contact-flow__rail::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--copper), rgba(184, 135, 58, .12));
  }

  .page-contact .contact-flow__step {
    border-top: 0;
  }

  .page-contact .contact-flow__summary {
    grid-template-columns: 2.3em minmax(0, 1fr);
    padding: 1.3rem 1.6rem 1.3rem 0;
  }

  .page-contact .contact-flow__name {
    font-size: 18px;
  }

  .page-contact .contact-flow__body {
    padding-right: 1.6rem;
  }

  .page-contact .contact-harbin__grid {
    gap: 3rem;
    align-items: start;
  }

  .page-contact .contact-terms__item {
    grid-template-columns: 12em minmax(0, 1fr);
    gap: 0 1.75rem;
    align-items: baseline;
  }

  .page-contact .contact-next__panel {
    padding: 3.25rem 3rem;
  }

  .page-contact .contact-next__panel::before {
    left: 3rem;
    right: 3rem;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-hero__title {
    font-size: 64px;
    max-width: 13em;
  }

  .page-contact .contact-hero__lede {
    font-size: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-scene__tab {
    transition: none;
  }
}
</main>