.page-contact {
  --pc-notch: 22px;
  --pc-radius: 2px var(--pc-notch) 2px var(--pc-notch);
  --pc-radius-sm: 2px 14px 2px 14px;
  --pc-gap: clamp(16px, 2.4vw, 26px);
  background: var(--k-paper);
  color: var(--k-ink);
  font-family: var(--k-font);
  overflow-x: clip;
}

.page-contact .mono-label {
  display: inline-block;
  margin: 0;
  font-family: var(--k-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--k-grey);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 0 4px;
  font-family: var(--k-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--k-grey);
}

.page-contact .breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-contact .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: var(--k-green-deep);
}

.page-contact .breadcrumbs__item a {
  color: var(--k-grey);
  text-decoration: none;
}

.page-contact .breadcrumbs__item a:hover,
.page-contact .breadcrumbs__item a:focus-visible {
  color: var(--k-green-deep);
}

.page-contact .breadcrumbs__item[aria-current="page"] {
  color: var(--k-ink);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 6px 0 clamp(38px, 6vw, 72px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -14px;
  right: -8vw;
  width: min(560px, 62vw);
  height: 240px;
  background: repeating-linear-gradient(112deg, rgba(107, 224, 26, .22) 0 2px, transparent 2px 18px);
  transform: skewY(-4deg);
  pointer-events: none;
}

.page-contact .contact-hero .shell {
  position: relative;
}

.page-contact .contact-hero__title {
  margin: 16px 0 0;
  font-size: clamp(38px, 7.4vw, 76px);
  font-weight: 900;
  line-height: .96;
  letter-spacing: -.025em;
  color: var(--k-ink);
}

.page-contact .contact-hero__title em {
  font-style: normal;
  padding: 0 .06em;
  background: linear-gradient(transparent 62%, var(--k-green) 62%, var(--k-green) 94%, transparent 94%);
}

.page-contact .contact-hero__lead {
  max-width: 60ch;
  margin: 20px 0 0;
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 1.9;
  color: var(--k-grey);
}

/* ---------- 渠道选择卡组 ---------- */
.page-contact .channel-grid {
  list-style: none;
  margin: clamp(28px, 4.4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: var(--pc-gap);
  grid-template-columns: 1fr;
}

.page-contact .channel-card {
  display: flex;
}

.page-contact .channel-card__link {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  padding: 24px 22px 20px;
  background: #fff;
  border: 1px solid var(--k-hair);
  border-radius: var(--pc-radius);
  color: inherit;
  text-decoration: none;
  transition: transform .28s var(--k-ease), border-color .28s var(--k-ease), box-shadow .28s var(--k-ease);
}

.page-contact .channel-card__link:hover,
.page-contact .channel-card__link:focus-visible {
  transform: translateY(-4px);
  border-color: var(--k-green);
  box-shadow: 0 16px 34px rgba(11, 27, 58, .1);
}

.page-contact .channel-card__tag {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--k-orange);
}

.page-contact .channel-card__title {
  font-size: 21px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
}

.page-contact .channel-card__desc {
  flex: 1;
  font-size: 15px;
  line-height: 1.8;
  color: var(--k-grey);
}

.page-contact .channel-card__go {
  padding-top: 12px;
  border-top: 1px dashed var(--k-hair);
  font-family: var(--k-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--k-green-deep);
}

.page-contact .channel-card__go::after {
  content: " →";
  color: var(--k-orange);
}

.page-contact .contact-hero__hint {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 14px 18px;
  background: var(--k-orange-soft);
  border-radius: var(--pc-radius-sm);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--k-ink);
}

/* ---------- 深色分区通用 ---------- */
.page-contact .section-band--night {
  background: var(--k-night);
  color: #EDF1F7;
}

.page-contact .section-band--night .mono-label {
  color: var(--k-green-soft);
}

.page-contact .section-band--night .section-head__title {
  color: #fff;
}

.page-contact .section-band--night .section-head__note {
  color: rgba(237, 241, 247, .62);
}

.page-contact .section-band--green {
  background: var(--k-green);
}

/* ---------- 联系方式 ---------- */
.page-contact .contact-reach {
  position: relative;
  padding: clamp(44px, 6vw, 80px) 0;
  overflow: hidden;
}

.page-contact .contact-reach::after {
  content: "";
  position: absolute;
  right: -10vw;
  bottom: -60px;
  width: 62vw;
  height: 220px;
  background: repeating-linear-gradient(72deg, rgba(200, 255, 107, .12) 0 2px, transparent 2px 22px);
  pointer-events: none;
}

.page-contact .contact-reach .shell {
  position: relative;
}

.page-contact .reach-list {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  border-top: 1px solid var(--k-hair-dark);
}

.page-contact .reach-list__row {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--k-hair-dark);
}

.page-contact .reach-list__key {
  font-family: var(--k-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(200, 255, 107, .88);
}

.page-contact .reach-list__val {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  color: #EDF1F7;
  word-break: break-word;
}

.page-contact .reach-list__val--mono {
  font-family: var(--k-mono);
  font-size: 16px;
  letter-spacing: .02em;
  word-break: break-all;
}

.page-contact .contact-reach__note {
  max-width: 56ch;
  margin: 24px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(237, 241, 247, .72);
}

.page-contact .contact-reach__media {
  margin: 26px 0 0;
  overflow: hidden;
  border: 1px solid var(--k-hair-dark);
  border-radius: var(--pc-radius);
}

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

/* ---------- 正文段落 ---------- */
.page-contact .lead-text {
  max-width: 64ch;
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--k-grey);
}

.page-contact .contact-support,
.page-contact .contact-correction,
.page-contact .contact-coop {
  padding: clamp(44px, 6vw, 80px) 0;
}

/* ---------- 信息清单 ---------- */
.page-contact .info-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .info-list li {
  position: relative;
  padding-left: 26px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--k-ink);
}

.page-contact .info-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 14px;
  height: 3px;
  background: var(--k-orange);
}

.page-contact .info-list strong {
  font-weight: 700;
}

.page-contact .info-list--compact {
  gap: 10px;
  margin-top: 28px;
}

/* ---------- 折叠问答 ---------- */
.page-contact details {
  margin-top: 14px;
  padding: 0 20px;
  background: #fff;
  border: 1px solid var(--k-hair);
  border-radius: var(--pc-radius-sm);
}

.page-contact summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--k-ink);
}

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

.page-contact summary::after {
  content: "+";
  flex: none;
  font-family: var(--k-mono);
  font-size: 18px;
  font-weight: 400;
  color: var(--k-orange);
}

.page-contact details[open] summary {
  border-bottom: 1px dashed var(--k-hair);
}

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

.page-contact details p {
  margin: 16px 0 18px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--k-grey);
}

/* ---------- 提交步骤 ---------- */
.page-contact .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .step-list__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--k-hair);
  border-left: 3px solid var(--k-green);
  border-radius: 0 16px 0 16px;
}

.page-contact .step-list__num {
  flex: none;
  padding-top: 3px;
  font-size: 12px;
  color: var(--k-orange);
}

.page-contact .step-list__item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--k-ink);
}

.page-contact .note-block {
  margin-top: 24px;
}

/* ---------- 合作方向 ---------- */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
  margin-top: 28px;
}

.page-contact .coop-card {
  padding: 20px;
  background: #fff;
  border: 1px solid var(--k-hair);
  border-top: 4px solid var(--k-green);
  border-radius: var(--pc-radius-sm);
}

.page-contact .coop-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 800;
  color: var(--k-ink);
}

.page-contact .coop-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--k-grey);
}

/* ---------- 沟通提示 ---------- */
.page-contact .contact-tips {
  padding: clamp(44px, 6vw, 80px) 0;
}

.page-contact .tips-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
}

.page-contact .tips-grid__media {
  overflow: hidden;
  border-radius: var(--pc-radius);
}

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

.page-contact .checklist__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 18px;
  background: #fff;
  border-left: 3px solid var(--k-green-soft);
  border-radius: 0 14px 0 14px;
}

.page-contact .checklist__box {
  flex: none;
  width: 17px;
  height: 17px;
  margin-top: 3px;
  border: 2px solid var(--k-green-deep);
  border-radius: 4px;
}

.page-contact .checklist__text {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--k-ink);
}

/* ---------- 结尾引导 ---------- */
.page-contact .contact-cta {
  padding: clamp(44px, 6vw, 72px) 0;
}

.page-contact .contact-cta__inner {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-contact .contact-cta__title {
  margin: 0;
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--k-ink);
}

.page-contact .contact-cta__text {
  max-width: 58ch;
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(18, 22, 28, .78);
}

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

.page-contact .contact-cta .btn--ghost {
  border-color: rgba(18, 22, 28, .45);
  color: var(--k-ink);
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-contact .reach-list__row {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 800px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .contact-reach__media {
    margin: 0;
  }

  .page-contact .tips-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

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

  .page-contact .channel-card__link:hover,
  .page-contact .channel-card__link:focus-visible {
    transform: none;
  }
}