.page-contact {
  --pc-space: clamp(44px, 7vw, 88px);
  background: var(--lb-deep);
  color: var(--lb-fog);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}

.page-contact .pc-wrap {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 56px);
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */

.page-contact .pc-head {
  position: relative;
  padding-block: clamp(22px, 4.5vw, 52px) clamp(20px, 3.6vw, 34px);
  background:
    radial-gradient(92% 72% at 88% -18%, rgba(198, 242, 74, .13), transparent 62%),
    radial-gradient(70% 60% at 0% 122%, rgba(240, 138, 60, .1), transparent 66%);
}

.page-contact .crumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(22px, 4vw, 36px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--lb-ash);
}

.page-contact .crumb a {
  color: var(--lb-ash);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease-out, border-color .18s ease-out;
}

.page-contact .crumb a:hover,
.page-contact .crumb a:focus-visible {
  color: var(--lb-lime);
  border-bottom-color: var(--lb-lime);
}

.page-contact .crumb__sep {
  color: rgba(143, 167, 156, .58);
}

.page-contact .crumb [aria-current="page"] {
  color: var(--lb-fog);
}

.page-contact .pc-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--lb-lime);
}

.page-contact .pc-kicker::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px rgba(198, 242, 74, .16);
}

.page-contact .pc-kicker--orange {
  color: var(--lb-orange);
}

.page-contact .pc-kicker--orange::before {
  box-shadow: 0 0 0 3px rgba(240, 138, 60, .16);
}

.page-contact .pc-h1 {
  margin: 0 0 clamp(16px, 3vw, 26px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 9vw, 88px);
  line-height: .95;
  letter-spacing: -.02em;
  color: var(--lb-fog);
}

.page-contact .pc-lead {
  max-width: 52ch;
  margin: 0;
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.8;
  color: var(--lb-ash);
}

/* ---------- 联系渠道卡 ---------- */

.page-contact .pc-deck {
  padding-block: clamp(6px, 1.6vw, 16px);
}

.page-contact .pc-deck__grid {
  display: grid;
  gap: 22px;
}

.page-contact .pc-card {
  position: relative;
  background: var(--lb-paper);
  color: var(--lb-ink);
  border: 1px solid var(--lb-paper-ash);
  padding: clamp(20px, 4vw, 36px);
  box-shadow: 7px 7px 0 rgba(6, 18, 15, .58), 14px 14px 0 rgba(6, 18, 15, .26);
}

.page-contact .pc-card__label {
  margin: 0 0 clamp(16px, 3vw, 24px);
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(16, 21, 18, .2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(16, 21, 18, .56);
}

.page-contact .pc-channel {
  display: grid;
  gap: 6px;
  padding-block: 18px;
  border-top: 1px dashed rgba(16, 21, 18, .22);
}

.page-contact .pc-card__label + .pc-channel {
  border-top: 0;
  padding-top: 0;
}

.page-contact .pc-channel__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(16, 21, 18, .58);
}

.page-contact .pc-channel__body {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-contact .pc-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(15px, 3.4vw, 26px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--lb-ink);
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 2px solid transparent;
  transition: border-color .18s ease-out, color .18s ease-out;
}

.page-contact a.pc-value:hover,
.page-contact a.pc-value:focus-visible {
  color: var(--lb-stand);
  border-bottom-color: var(--lb-stand);
}

.page-contact .pc-value--addr {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(15px, 2.2vw, 17px);
  font-weight: 500;
  line-height: 1.7;
  letter-spacing: 0;
}

.page-contact .pc-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--lb-lime-soft);
  background: var(--lb-ink);
  box-shadow: 3px 3px 0 var(--lb-lime);
  transition: transform .18s ease-out, box-shadow .18s ease-out, background .18s ease-out, color .18s ease-out;
}

.page-contact .pc-copy:hover {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0 var(--lb-lime);
}

.page-contact .pc-copy:focus-visible {
  outline: 2px solid var(--lb-orange);
  outline-offset: 3px;
}

.page-contact .pc-copy[data-copied] {
  background: var(--lb-lime);
  color: var(--lb-ink);
  box-shadow: 3px 3px 0 var(--lb-ink);
}

/* ---------- 图片 ---------- */

.page-contact .pc-figure {
  margin: 0;
  padding: 8px;
  background: var(--lb-stand);
  border: 1px solid rgba(143, 167, 156, .26);
}

.page-contact .pc-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 2.2%, 100% 100%, 0 97.8%);
}

.page-contact .pc-figure figcaption {
  padding: 10px 4px 2px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--lb-ash);
}

.page-contact .pc-figure--band {
  margin-top: clamp(22px, 4vw, 40px);
}

.page-contact .pc-figure--band img {
  aspect-ratio: 5 / 3;
}

/* ---------- 四步流程 ---------- */

.page-contact .pc-flow {
  padding-block: var(--pc-space) 0;
}

.page-contact .pc-sec-head {
  margin-bottom: clamp(22px, 3.5vw, 34px);
}

.page-contact .pc-h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4.6vw, 44px);
  line-height: 1.06;
  letter-spacing: -.015em;
  color: inherit;
}

.page-contact .pc-sub {
  margin: 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--lb-ash);
}

.page-contact .pc-steps {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-step {
  position: relative;
  z-index: 1;
  display: flex;
  background: var(--lb-stand);
  border: 1px solid rgba(143, 167, 156, .2);
  border-left: 3px solid var(--lb-lime);
  transition: border-color .18s ease-out;
}

.page-contact .pc-step:hover {
  border-color: rgba(198, 242, 74, .55);
  border-left-color: var(--lb-lime-soft);
}

.page-contact .pc-step > details {
  flex: 1 1 auto;
  min-width: 0;
}

.page-contact .pc-step summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .pc-step summary::marker {
  content: "";
}

.page-contact .pc-step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--lb-lime);
}

.page-contact .pc-step details[open] > summary::after {
  content: "–";
  color: var(--lb-ash);
}

.page-contact .pc-step summary:focus-visible {
  outline: 2px solid var(--lb-lime);
  outline-offset: -3px;
}

.page-contact .pc-step__num {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 26px;
  height: 26px;
  background: var(--lb-lime);
  color: var(--lb-ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

.page-contact .pc-step__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--lb-fog);
}

.page-contact .pc-step__text {
  margin: 0;
  padding: 0 16px 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--lb-ash);
}

/* ---------- 准备事项 ---------- */

.page-contact .pc-prep {
  margin-top: var(--pc-space);
  padding-block: clamp(34px, 6vw, 68px);
  background: linear-gradient(180deg, rgba(18, 48, 42, .9), rgba(11, 31, 26, .18));
  border-block: 1px solid rgba(143, 167, 156, .16);
}

.page-contact .pc-prep__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .pc-prep__intro {
  margin: 0;
  max-width: 42ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--lb-ash);
}

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

.page-contact .pc-prep__item {
  padding: 18px 20px 20px;
  background: rgba(6, 18, 15, .5);
  border: 1px solid rgba(143, 167, 156, .2);
  border-top: 2px solid var(--lb-orange);
}

.page-contact .pc-prep__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--lb-orange);
}

.page-contact .pc-prep__key {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--lb-fog);
}

.page-contact .pc-prep__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--lb-ash);
}

/* ---------- 反馈类型 ---------- */

.page-contact .pc-types {
  padding-block: var(--pc-space) 0;
}

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

.page-contact .pc-type {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--lb-stand);
  border: 1px solid rgba(143, 167, 156, .18);
  transition: border-color .18s ease-out, transform .18s ease-out, box-shadow .18s ease-out;
}

.page-contact .pc-type:hover {
  border-color: rgba(198, 242, 74, .48);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 rgba(6, 18, 15, .62);
}

.page-contact .pc-type .tag {
  align-self: flex-start;
}

.page-contact .pc-type__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.22;
  color: var(--lb-fog);
}

.page-contact .pc-type__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--lb-ash);
}

.page-contact .pc-type__link {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  min-height: 44px;
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--lb-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 242, 74, .38);
  transition: color .18s ease-out, border-color .18s ease-out;
}

.page-contact .pc-type__link:hover,
.page-contact .pc-type__link:focus-visible {
  color: var(--lb-lime-soft);
  border-bottom-color: var(--lb-lime-soft);
}

/* ---------- 渠道用途说明 ---------- */

.page-contact .pc-usage {
  padding-block: var(--pc-space) clamp(48px, 8vw, 96px);
}

.page-contact .pc-usage__panel {
  padding: clamp(22px, 4vw, 42px);
  background: var(--lb-paper);
  color: var(--lb-ink);
  border: 1px solid var(--lb-paper-ash);
  box-shadow: 8px 8px 0 rgba(6, 18, 15, .58);
}

.page-contact .pc-usage__panel .pc-h2 {
  margin-bottom: clamp(14px, 2.4vw, 20px);
}

.page-contact .pc-usage__body p {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(16, 21, 18, .84);
}

.page-contact .pc-usage__body p:first-child {
  margin-top: 0;
}

.page-contact .pc-usage__body a {
  color: var(--lb-ink);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--lb-orange);
  transition: background .18s ease-out;
}

.page-contact .pc-usage__body a:hover,
.page-contact .pc-usage__body a:focus-visible {
  background: rgba(240, 138, 60, .24);
}

/* ---------- 断点 ---------- */

@media (min-width: 700px) {
  .page-contact .pc-type-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .pc-step__text {
    padding-left: 54px;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-deck__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 30px;
    align-items: start;
  }

  .page-contact .pc-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .pc-steps::before {
    content: "";
    position: absolute;
    top: 27px;
    left: 3%;
    right: 3%;
    height: 1px;
    z-index: 0;
    background: repeating-linear-gradient(90deg, rgba(198, 242, 74, .42) 0 7px, transparent 7px 15px);
  }

  .page-contact .pc-step__text {
    padding-left: 16px;
  }

  .page-contact .pc-prep__grid {
    grid-template-columns: minmax(0, .84fr) minmax(0, 1.16fr);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-contact .pc-type-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }

  .page-contact .pc-type:hover,
  .page-contact .pc-copy:hover {
    transform: none;
  }
}