.page-contact {
  --ct-gap: clamp(20px, 3vw, 40px);
  --ct-edge: 20px;
}

.page-contact .ab-breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(24px, 4vw, 48px);
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  top: -18vw;
  right: -22vw;
  width: 76vw;
  height: 76vw;
  background:
    radial-gradient(circle at 40% 40%, rgba(240, 90, 40, 0.20), transparent 62%),
    radial-gradient(circle at 68% 62%, rgba(255, 200, 87, 0.10), transparent 58%);
  pointer-events: none;
  z-index: 0;
}

.page-contact .ct-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--ct-gap);
  align-items: center;
}

.page-contact .ct-hero__lead {
  min-width: 0;
}

.page-contact .ct-title {
  font-family: var(--ab-font-display);
  font-weight: 300;
  font-size: clamp(36px, 8.6vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 14px 0 20px;
  color: var(--ab-shell);
}

.page-contact .ct-title em {
  font-style: normal;
  color: var(--ab-flare);
  position: relative;
  display: inline-block;
}

.page-contact .ct-title em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 4%;
  bottom: 0.06em;
  height: 2px;
  background: linear-gradient(90deg, var(--ab-flare), rgba(255, 200, 87, 0.7), transparent);
}

.page-contact .ct-hero__lede {
  max-width: 46ch;
  color: var(--ab-mist);
}

.page-contact .ct-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .ct-hero__note {
  margin-top: 18px;
  color: var(--ab-lamp);
  transform: rotate(-1.2deg);
}

.page-contact .ct-hero__media {
  position: relative;
  margin: 0;
  min-width: 0;
}

.page-contact .ct-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
  box-shadow: var(--ab-shadow);
}

.page-contact .ct-hero__badge {
  position: absolute;
  left: -1px;
  bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 16px;
  background: var(--ab-sand);
  color: var(--ab-ink);
  border-left: 3px solid var(--ab-flare);
}

.page-contact .ct-hero__badge-num {
  font-family: var(--ab-font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--ab-flare-2);
}

.page-contact .ct-hero__badge-txt {
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* ---------- 四步流程 ---------- */
.page-contact .ct-flow__grid {
  display: grid;
  gap: var(--ct-gap);
  align-items: start;
}

.page-contact .ct-flow__intro .ab-h2 {
  margin-bottom: 16px;
}

.page-contact .ct-flow__intro .ab-lede {
  color: var(--ab-mist);
  max-width: 40ch;
}

.page-contact .ct-flow__media {
  margin: clamp(24px, 4vw, 36px) 0 0;
}

.page-contact .ct-flow__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-contact .ct-flow__media figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--ab-steel);
  line-height: 1.6;
}

.page-contact .ct-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-contact .ct-steps > li {
  position: relative;
}

.page-contact .ct-steps > li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 26px;
  bottom: -12px;
  width: 1px;
  height: 12px;
  background: linear-gradient(180deg, rgba(240, 90, 40, 0.65), transparent);
}

.page-contact .ct-step {
  background: linear-gradient(180deg, rgba(16, 59, 51, 0.85), rgba(8, 33, 29, 0.85));
  border: 1px solid var(--ab-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: transform 0.22s var(--ab-ease), border-color 0.22s var(--ab-ease);
}

.page-contact .ct-step:hover {
  transform: translateX(3px);
  border-color: rgba(240, 90, 40, 0.5);
}

.page-contact .ct-step[open] {
  border-color: rgba(240, 90, 40, 0.65);
}

.page-contact .ct-step > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

.page-contact .ct-step > summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-step > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--ab-font-mono);
  font-size: 18px;
  color: var(--ab-steel);
  line-height: 1;
}

.page-contact .ct-step[open] > summary::after {
  content: "−";
  color: var(--ab-flare);
}

.page-contact .ct-step__num {
  font-family: var(--ab-font-mono);
  font-size: 13px;
  color: var(--ab-flare);
  letter-spacing: 0.06em;
}

.page-contact .ct-step__title {
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 700;
  color: var(--ab-shell);
  letter-spacing: 0.01em;
}

.page-contact .ct-step__panel {
  padding: 0 20px 20px 20px;
  border-top: 1px dashed var(--ab-line);
  margin-top: 2px;
  padding-top: 14px;
}

.page-contact .ct-step__panel p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ab-mist);
}

.page-contact .ct-step__panel a {
  color: var(--ab-lamp);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .ct-step__panel a:hover {
  color: var(--ab-flare);
}

.page-contact .ct-step__need {
  font-family: var(--ab-font-mono);
  font-size: 12px !important;
  color: var(--ab-turf) !important;
  letter-spacing: 0.02em;
  border-left: 2px solid var(--ab-turf);
  padding-left: 10px;
  margin-bottom: 0 !important;
}

/* ---------- 合作方向 ---------- */
.page-contact .ct-coop__head {
  max-width: 62ch;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-contact .ct-coop__head .ab-lede {
  color: var(--ab-mist);
}

.page-contact .ct-coop__cards {
  display: grid;
  gap: 16px;
}

.page-contact .ct-coop__card {
  position: relative;
  padding: 22px 22px 20px;
  background: linear-gradient(160deg, rgba(232, 215, 185, 0.10), rgba(16, 59, 51, 0.55));
  border: 1px solid var(--ab-line);
  clip-path: polygon(18px 0, 100% 0, 100% 100%, 0 100%, 0 18px);
  transition: transform 0.22s var(--ab-ease), border-color 0.22s var(--ab-ease);
}

.page-contact .ct-coop__card:hover {
  transform: translateY(-3px);
  border-color: rgba(232, 215, 185, 0.45);
}

.page-contact .ct-coop__card .ab-h3 {
  margin: 14px 0 10px;
  color: var(--ab-shell);
}

.page-contact .ct-coop__card p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ab-mist);
}

.page-contact .ct-coop__who {
  font-family: var(--ab-font-mono);
  font-size: 12px !important;
  line-height: 1.6 !important;
  color: var(--ab-lamp) !important;
  margin-bottom: 0 !important;
  padding-top: 10px;
  border-top: 1px solid var(--ab-line);
}

/* ---------- 提交清单 ---------- */
.page-contact .ct-prep {
  color: var(--ab-ink);
}

.page-contact .ct-prep .ab-eyebrow,
.page-contact .ct-prep .ab-h2 {
  color: var(--ab-ink);
}

.page-contact .ct-prep__grid {
  display: grid;
  gap: var(--ct-gap);
  align-items: start;
}

.page-contact .ct-prep__intro p {
  max-width: 36ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ab-ink-2);
}

.page-contact .ct-prep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--ab-ink-line);
  border-top: 2px solid var(--ab-ink);
}

.page-contact .ct-prep__list li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 4px 10px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--ab-shell);
}

.page-contact .ct-prep__list li::before {
  content: "";
  grid-row: span 2;
  width: 14px;
  height: 14px;
  border: 1px solid var(--ab-turf);
  background: linear-gradient(135deg, rgba(240, 90, 40, 0.15), transparent);
  align-self: start;
  margin-top: 4px;
}

.page-contact .ct-prep__k {
  font-weight: 700;
  font-size: 15px;
  color: var(--ab-ink);
}

.page-contact .ct-prep__v {
  grid-column: 2;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ab-turf);
}

/* ---------- 联系区 ---------- */
.page-contact .ct-channels {
  color: var(--ab-ink);
}

.page-contact .ct-channels .ab-eyebrow,
.page-contact .ct-channels .ab-h2 {
  color: var(--ab-ink);
}

.page-contact .ct-channels__grid {
  display: grid;
  gap: var(--ct-gap);
  align-items: start;
}

.page-contact .ct-channels__intro p {
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ab-ink-2);
}

.page-contact .ct-channels__note {
  color: var(--ab-flare-2);
  margin-top: 14px;
}

.page-contact .ct-channels__card {
  background: var(--ab-paper);
  border-left: 4px solid var(--ab-flare);
  padding: clamp(20px, 3vw, 30px);
  box-shadow: 0 18px 40px -32px rgba(11, 43, 38, 0.9);
}

.page-contact .ct-channels__card .ab-contact__label {
  color: var(--ab-turf);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-contact .ct-channels__card .ab-contact__value {
  color: var(--ab-ink);
  font-size: clamp(16px, 2.4vw, 20px);
  word-break: break-word;
}

.page-contact .ct-channels__card .ab-contact__value--num {
  color: var(--ab-flare-2);
  font-weight: 700;
}

.page-contact .ct-channels__card .ab-contact__row {
  border-bottom: 1px dashed rgba(11, 43, 38, 0.18);
  padding-block: 12px;
}

.page-contact .ct-channels__card .ab-contact__row:first-child {
  padding-top: 0;
}

.page-contact .ct-channels__fine {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ab-turf);
}

.page-contact .ct-channels__fine a {
  color: var(--ab-flare-2);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 留档回看 ---------- */
.page-contact .ct-archive__head {
  max-width: 34ch;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-contact .ct-archive__grid {
  display: grid;
  gap: 16px;
}

.page-contact .ct-archive__card {
  padding: 22px;
  min-width: 0;
}

.page-contact .ct-archive__card p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
}

.page-contact .ct-archive__card .ab-card__title {
  margin-top: 10px;
}

.page-contact .ct-archive__more {
  margin-top: clamp(22px, 3vw, 32px);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ab-mist);
  border-top: 1px solid var(--ab-line);
  padding-top: 18px;
}

.page-contact .ct-archive__more a {
  color: var(--ab-lamp);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .ct-archive__more a:hover {
  color: var(--ab-flare);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact {
    --ct-edge: 28px;
  }

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

  .page-contact .ct-coop__cards > :nth-child(even) {
    transform: translateY(20px);
  }

  .page-contact .ct-coop__cards > :nth-child(even):hover {
    transform: translateY(17px);
  }

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

@media (min-width: 900px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: 1.08fr 0.92fr;
    gap: clamp(32px, 5vw, 72px);
  }

  .page-contact .ct-hero__media {
    align-self: stretch;
  }

  .page-contact .ct-hero__media img {
    aspect-ratio: 14 / 11;
    height: 100%;
  }

  .page-contact .ct-flow__grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: clamp(32px, 5vw, 68px);
  }

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

  .page-contact .ct-prep__grid {
    grid-template-columns: 0.8fr 1.2fr;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-contact .ct-channels__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: clamp(32px, 5vw, 64px);
  }
}

@media (min-width: 1200px) {
  .page-contact .ct-coop__cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .ct-coop__cards > :nth-child(even) {
    transform: translateY(28px);
  }

  .page-contact .ct-coop__cards > :nth-child(even):hover {
    transform: translateY(24px);
  }

  .page-contact .ct-coop__cards > :nth-child(3) {
    transform: translateY(-8px);
  }

  .page-contact .ct-coop__cards > :nth-child(3):hover {
    transform: translateY(-12px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-step,
  .page-contact .ct-coop__card {
    transition: none;
  }

  .page-contact .ct-step:hover,
  .page-contact .ct-coop__card:hover,
  .page-contact .ct-coop__cards > :nth-child(even),
  .page-contact .ct-coop__cards > :nth-child(even):hover,
  .page-contact .ct-coop__cards > :nth-child(3),
  .page-contact .ct-coop__cards > :nth-child(3):hover {
    transform: none;
  }
}