.page-contact {
  --pc-gap: 18px;
  --pc-edge: 30px;
}

/* ============ 首屏 ============ */
.page-contact .contact-hero {
  position: relative;
  padding: 8px 0 44px;
  border-bottom: var(--bw) solid var(--line);
  background:
    radial-gradient(120% 84% at 88% -6%, rgba(47, 232, 198, 0.16) 0%, rgba(47, 232, 198, 0) 62%),
    linear-gradient(180deg, rgba(12, 42, 34, 0.92) 0%, rgba(6, 18, 15, 0) 70%);
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: 30px;
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: 14px;
}

.page-contact .contact-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 8.4vw, 68px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .contact-hero__lead {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-hero__pulse {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-contact .contact-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  border: var(--bw) solid var(--line);
  background: var(--pine);
  box-shadow: var(--shadow-slab);
  overflow: hidden;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 68px;
  height: 4px;
  background: var(--cyan);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.06);
}

.page-contact .contact-hero__cap {
  padding: 12px 16px;
  border-top: var(--bw) solid var(--line);
  background: var(--pine);
  font-family: var(--font-serif);
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--mist);
}

/* ============ 联系渠道 ============ */
.page-contact .contact-channels {
  padding: 46px 0 50px;
}

.page-contact .channel-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .channel-bar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 14px;
  padding: 18px;
  background: rgba(12, 42, 34, 0.7);
  border: var(--bw) solid var(--line);
  border-left: 4px solid var(--cyan);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-contact .channel-bar:hover,
.page-contact .channel-bar:focus-within {
  transform: translateX(3px);
  border-color: var(--cyan-edge);
}

.page-contact .channel-bar.is-hidden {
  display: none;
}

.page-contact .channel-bar__idx {
  grid-row: 1 / span 2;
  font-size: var(--fs-20);
  color: var(--cyan);
  opacity: 0.7;
  line-height: 1.2;
}

.page-contact .channel-bar__body {
  display: block;
  min-width: 0;
}

.page-contact .channel-bar__key {
  display: block;
  font-size: var(--fs-14);
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-contact .channel-bar__val {
  display: block;
  margin-top: 4px;
  font-family: var(--font-num);
  font-size: clamp(15px, 4.4vw, 22px);
  line-height: 1.3;
  color: var(--cyan);
  word-break: break-all;
}

.page-contact .channel-bar__meta {
  display: block;
  margin-top: 8px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .channel-bar__act {
  grid-column: 2;
  justify-self: start;
}

.page-contact .channel-bar__act .btn {
  white-space: nowrap;
}

/* ============ 处理顺序 ============ */
.page-contact .contact-priority {
  position: relative;
  padding: 52px 0 56px;
  border-top: var(--bw) solid var(--line);
  background: linear-gradient(180deg, rgba(12, 42, 34, 0.85) 0%, rgba(6, 18, 15, 0.2) 100%);
}

.page-contact .contact-priority__inner {
  display: grid;
  gap: 30px;
}

.page-contact .contact-priority__intro h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 5.6vw, 44px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .contact-priority__intro p {
  margin: 16px 0 22px;
  max-width: 42ch;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--mist);
}

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

.page-contact .priority-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 2px 14px;
  padding: 22px 0;
  border-top: var(--bw) solid var(--line);
}

.page-contact .priority-item:last-child {
  border-bottom: var(--bw) solid var(--line);
}

.page-contact .priority-item__rank {
  grid-row: 1 / span 2;
  font-size: clamp(34px, 9vw, 52px);
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px var(--cyan);
  opacity: 0.85;
}

.page-contact .priority-item h3 {
  margin: 0;
  font-size: var(--fs-20);
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-contact .priority-item p {
  margin: 8px 0 0;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--mist);
}

/* ============ 合作方向 ============ */
.page-contact .contact-coop {
  position: relative;
  padding: 54px 0 58px;
  border-top: var(--bw) solid var(--line);
  overflow: hidden;
}

.page-contact .contact-coop__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.14;
  pointer-events: none;
}

.page-contact .contact-coop__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .contact-coop .shell {
  position: relative;
  z-index: 1;
}

.page-contact .coop-stack {
  margin-top: 26px;
}

.page-contact .coop-card {
  border: var(--bw) solid var(--line);
  background: rgba(6, 18, 15, 0.62);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-contact .coop-card + .coop-card {
  margin-top: 12px;
}

.page-contact .coop-card:hover {
  border-color: var(--cyan-edge);
  transform: translateY(-2px);
}

.page-contact .coop-card__head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-contact .coop-card__trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 18px;
  background: none;
  border: 0;
  color: var(--white);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

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

.page-contact .coop-card__no {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--cyan-soft);
  border: 1px solid var(--cyan-edge);
  font-size: var(--fs-16);
  color: var(--cyan);
}

.page-contact .coop-card__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-contact .coop-card__name {
  display: block;
  font-size: var(--fs-20);
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-contact .coop-card__hint {
  display: block;
  margin-top: 4px;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .coop-card__sign {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
}

.page-contact .coop-card__sign::before,
.page-contact .coop-card__sign::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: var(--cyan);
  transform: translateY(-50%);
}

.page-contact .coop-card__sign::after {
  transition: transform 0.3s var(--ease);
}

.page-contact .coop-card__trigger[aria-expanded="true"] .coop-card__sign::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-contact .coop-card__panel {
  padding: 18px 18px 22px;
  border-top: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  margin-left: 18px;
}

.page-contact .coop-card__panel[hidden] {
  display: none;
}

.page-contact .coop-card__panel p {
  margin: 0 0 12px;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .coop-card__list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .coop-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--white);
}

.page-contact .coop-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .coop-card__foot {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--gold);
}

/* ============ 反馈准备 ============ */
.page-contact .contact-prep {
  padding: 48px 0 52px;
  border-top: var(--bw) solid var(--line);
}

.page-contact .prep-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 2px 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

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

.page-contact .prep-item__tag {
  grid-row: 1 / span 2;
  font-size: var(--fs-28);
  line-height: 1;
  color: var(--cyan);
  opacity: 0.78;
}

.page-contact .prep-item h3 {
  margin: 0;
  font-size: var(--fs-16);
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .prep-item p {
  margin: 6px 0 0;
  font-size: var(--fs-14);
  line-height: 1.74;
  color: var(--mist);
}

/* ============ 留言 ============ */
.page-contact .contact-leave {
  padding: 50px 0 64px;
  border-top: var(--bw) solid var(--line);
  background:
    linear-gradient(135deg, rgba(12, 42, 34, 0.96) 0%, rgba(6, 18, 15, 0.4) 100%),
    radial-gradient(90% 70% at 8% 100%, rgba(47, 232, 198, 0.12) 0%, rgba(47, 232, 198, 0) 60%);
}

.page-contact .contact-leave__grid {
  display: grid;
  gap: 32px;
}

.page-contact .contact-leave__aside h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 5.6vw, 42px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .contact-leave__aside p {
  margin: 16px 0 0;
  max-width: 40ch;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-leave__facts {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .contact-leave__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-contact .contact-leave__facts .num {
  flex: 0 0 auto;
  font-size: var(--fs-16);
  color: var(--cyan);
}

.page-contact .contact-form {
  padding: 22px;
  background: rgba(6, 18, 15, 0.72);
  border: var(--bw) solid var(--line);
  border-top: 4px solid var(--cyan);
}

.page-contact .field {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.page-contact .field__label {
  font-size: var(--fs-14);
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .field__input,
.page-contact .field__select,
.page-contact .field__area {
  width: 100%;
  padding: 13px 14px;
  background: var(--ink);
  border: var(--bw) solid var(--line);
  border-radius: var(--r);
  color: var(--white);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.6;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-contact .field__area {
  resize: vertical;
  min-height: 120px;
}

.page-contact .field__input::placeholder,
.page-contact .field__area::placeholder {
  color: rgba(143, 179, 170, 0.65);
}

.page-contact .field__input:focus,
.page-contact .field__select:focus,
.page-contact .field__area:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-soft);
}

.page-contact .field__hint {
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .contact-form__ok {
  margin: 16px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--cyan);
  background: var(--cyan-soft);
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--white);
}

.page-contact .contact-form__ok[hidden] {
  display: none;
}

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-contact .channel-bar {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 6px 18px;
  }

  .page-contact .channel-bar__idx {
    grid-row: 1 / span 2;
    font-size: var(--fs-28);
  }

  .page-contact .channel-bar__act {
    grid-column: 3;
    grid-row: 1 / span 2;
    justify-self: end;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-hero {
    padding-bottom: 60px;
  }

  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 48px;
  }

  .page-contact .contact-channels {
    padding: 62px 0 66px;
  }

  .page-contact .contact-priority__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .contact-priority {
    padding: 64px 0 68px;
  }

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

  .page-contact .contact-coop {
    padding: 66px 0 72px;
  }

  .page-contact .coop-card__trigger {
    padding: 22px 24px;
  }

  .page-contact .coop-card__panel {
    padding: 20px 24px 26px;
    margin-left: 0;
  }

  .page-contact .coop-card__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px 20px;
  }

  .page-contact .contact-prep {
    padding: 64px 0 68px;
  }

  .page-contact .prep-item {
    grid-template-columns: 76px minmax(0, 1fr) minmax(0, 1fr);
    gap: 0 24px;
    align-items: start;
  }

  .page-contact .prep-item__tag {
    grid-row: 1;
  }

  .page-contact .prep-item p {
    margin-top: 0;
  }

  .page-contact .contact-leave {
    padding: 68px 0 78px;
  }

  .page-contact .contact-leave__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .contact-form {
    padding: 30px 32px 34px;
  }
}