.page-contact {
  --zone: var(--orange);
  --ct-line: rgba(255, 122, 26, .34);
  --ct-soft: rgba(233, 238, 249, .10);
  --ct-deep: #0B1B3F;
  --ct-radius: 14px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 22px 0 12px;
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -140px;
  width: 620px;
  height: 420px;
  background: radial-gradient(closest-side, rgba(255, 122, 26, .20), transparent 72%);
  pointer-events: none;
}

.page-contact .contact-hero .breadcrumb {
  position: relative;
  margin-bottom: 22px;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: 26px;
}

.page-contact .contact-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: .14em;
  color: var(--zone);
}

.page-contact .contact-hero h1 {
  margin: 0 0 16px;
  font-size: var(--fs-34);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-contact .contact-hero__lead {
  margin: 0 0 26px;
  max-width: 60ch;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .contact-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero__fact {
  padding: 4px 0 4px 12px;
  border-left: 2px solid var(--ct-line);
}

.page-contact .contact-hero__fact b {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--white);
}

.page-contact .contact-hero__fact span {
  display: block;
  margin-top: 6px;
  font-size: var(--fs-13);
  color: var(--muted);
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  border-radius: var(--ct-radius);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  background: var(--ct-deep);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(205deg, rgba(255, 122, 26, .24), transparent 58%);
  pointer-events: none;
}

.page-contact .contact-hero__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--text);
  background: rgba(10, 22, 51, .82);
}

/* ---------- 四步流程条 ---------- */
.page-contact .contact-flow {
  padding: 42px 0 10px;
}

.page-contact .contact-flow__track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(250px, 80vw);
  gap: 14px;
  margin: 0;
  padding: 2px 2px 14px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-contact .contact-flow__step {
  position: relative;
  scroll-snap-align: start;
  padding: 22px 20px 20px;
  background: linear-gradient(155deg, var(--panel) 0%, var(--ct-deep) 100%);
  border-radius: 4px 4px var(--ct-radius) var(--ct-radius);
  overflow: hidden;
}

.page-contact .contact-flow__step::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-top: 24px solid var(--zone);
  border-left: 24px solid transparent;
}

.page-contact .contact-flow__step::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--zone), transparent);
  opacity: .55;
}

.page-contact .contact-flow__num {
  display: inline-block;
  margin-bottom: 14px;
  padding: 5px 9px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--ink-900);
  background: var(--zone);
  border-radius: 3px;
}

.page-contact .contact-flow__title {
  margin: 0 0 10px;
  font-size: var(--fs-18);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .contact-flow__text {
  margin: 0 0 14px;
  font-size: var(--fs-16);
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .contact-flow__out {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--zone);
}

/* ---------- 合作方向 + 资料清单 ---------- */
.page-contact .contact-tracks {
  padding: 44px 0 10px;
}

.page-contact .contact-tracks__grid {
  display: grid;
  gap: 20px;
}

.page-contact .contact-tracks__list {
  display: grid;
  gap: 14px;
}

.page-contact .contact-track {
  background: var(--panel);
  border-left: 3px solid var(--zone);
  border-radius: 0 var(--ct-radius) var(--ct-radius) 0;
  overflow: hidden;
}

.page-contact .contact-track__head {
  display: grid;
  gap: 10px;
  padding: 20px 18px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .contact-track summary:focus-visible {
  outline: 2px solid var(--zone);
  outline-offset: -4px;
}

.page-contact .contact-track__title {
  margin: 0;
  font-size: var(--fs-18);
  font-weight: 800;
  line-height: 1.34;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .contact-track[open] .contact-track__head {
  padding-bottom: 10px;
}

.page-contact .contact-track__body {
  padding: 0 18px 22px;
}

.page-contact .contact-track__body p {
  margin: 0 0 14px;
  font-size: var(--fs-16);
  line-height: 1.76;
  color: var(--muted);
}

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

.page-contact .contact-track__list li {
  position: relative;
  padding-left: 18px;
  font-size: var(--fs-16);
  line-height: 1.68;
  color: var(--text);
}

.page-contact .contact-track__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 2px;
  background: var(--zone);
}

.page-contact .contact-checklist {
  align-self: start;
  padding: 24px 20px 22px;
  background: rgba(18, 34, 77, .55);
  border: 1px dashed var(--ct-line);
  border-radius: var(--ct-radius);
}

.page-contact .contact-checklist__title {
  margin: 0 0 10px;
  font-size: var(--fs-22);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .contact-checklist__lead {
  margin: 0 0 20px;
  font-size: var(--fs-16);
  line-height: 1.72;
  color: var(--muted);
}

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

.page-contact .contact-checklist__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  font-size: var(--fs-16);
  line-height: 1.66;
  color: var(--text);
}

.page-contact .contact-checklist__num {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: .08em;
  color: var(--zone);
}

.page-contact .contact-checklist__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--ct-soft);
  font-size: var(--fs-13);
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .contact-checklist__note a {
  color: var(--zone);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 26, .45);
}

/* ---------- 联系渠道信息条 ---------- */
.page-contact .contact-channels {
  padding: 44px 0 10px;
}

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

.page-contact .contact-strip__item {
  display: grid;
  gap: 8px;
  padding: 18px;
  background: var(--ct-deep);
}

.page-contact .contact-strip__label {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--zone);
}

.page-contact .contact-strip__value {
  font-family: var(--font-mono);
  font-size: var(--fs-18);
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.5;
  color: var(--white);
  word-break: break-word;
}

.page-contact .contact-strip__note {
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-copy {
  justify-self: start;
  padding: 8px 14px;
  font-family: var(--font-body);
  font-size: var(--fs-13);
  font-weight: 700;
  color: var(--zone);
  background: transparent;
  border: 1px solid var(--zone);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color .2s var(--ease), color .2s var(--ease);
}

.page-contact .contact-copy:hover,
.page-contact .contact-copy:focus-visible {
  color: var(--ink-900);
  background: var(--zone);
}

.page-contact .contact-copy:focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

/* ---------- 服务时段与响应 ---------- */
.page-contact .contact-window {
  padding: 44px 0 24px;
}

.page-contact .contact-window__grid {
  display: grid;
  gap: 24px;
}

.page-contact .contact-window__lead {
  margin: 14px 0 24px;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-window__facts {
  display: grid;
  gap: 1px;
  margin: 0 0 22px;
  padding: 0;
  background: var(--ct-soft);
  border-radius: var(--ct-radius);
  overflow: hidden;
}

.page-contact .contact-window__fact {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  background: var(--ct-deep);
}

.page-contact .contact-window__fact dt {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--zone);
}

.page-contact .contact-window__fact dd {
  margin: 0;
  font-size: var(--fs-18);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-contact .contact-window__note {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-window__note a {
  color: var(--zone);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 26, .45);
}

.page-contact .contact-window__figure {
  position: relative;
  margin: 0;
  border-radius: var(--ct-radius);
  overflow: hidden;
  border: 1px solid var(--ct-soft);
  background: var(--ct-deep);
}

.page-contact .contact-window__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .contact-window__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(108, 75, 255, .16), transparent 60%);
  pointer-events: none;
}

.page-contact .contact-window__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--text);
  background: rgba(10, 22, 51, .82);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-hero {
    padding-top: 28px;
  }

  .page-contact .contact-hero h1 {
    font-size: var(--fs-48);
  }

  .page-contact .contact-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .contact-flow__track {
    grid-auto-columns: minmax(272px, 44vw);
  }

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

  .page-contact .contact-strip__item {
    grid-template-columns: 148px minmax(0, 1fr) auto;
    grid-template-areas:
      "label value copy"
      "label note  note";
    align-items: center;
    gap: 6px 18px;
    padding: 20px 22px;
  }

  .page-contact .contact-strip__label { grid-area: label; }
  .page-contact .contact-strip__value { grid-area: value; }
  .page-contact .contact-strip__note  { grid-area: note; }
  .page-contact .contact-copy         { grid-area: copy; }
}

@media (min-width: 1000px) {
  .page-contact .contact-flow {
    padding-top: 52px;
  }

  .page-contact .contact-flow__track {
    grid-auto-flow: row;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-auto-columns: auto;
    gap: 16px;
    overflow-x: visible;
    padding-bottom: 4px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: 40px;
  }

  .page-contact .contact-tracks__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 28px;
  }

  .page-contact .contact-window__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: center;
    gap: 40px;
  }

  .page-contact .contact-window {
    padding-bottom: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-copy {
    transition: none;
  }
}