.page-contact {
  --pc-slant: -5.5deg;
  --pc-edge: rgba(28, 21, 18, .14);
  --pc-edge-dark: rgba(255, 255, 255, .16);
  background: var(--hk-cream);
  color: var(--hk-ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 22px 0 clamp(48px, 8vw, 92px);
  background: var(--hk-night);
  color: var(--hk-cream);
}

.page-contact .pc-hero__slant {
  position: absolute;
  z-index: 0;
  top: -34%;
  left: 32%;
  width: 124%;
  height: 172%;
  background: linear-gradient(148deg, var(--hk-plateau) 0%, var(--hk-night) 64%);
  transform: rotate(var(--pc-slant));
  pointer-events: none;
}

.page-contact .pc-hero__rail {
  position: absolute;
  z-index: 0;
  top: -30%;
  left: 33.5%;
  width: 2px;
  height: 170%;
  background: linear-gradient(180deg, transparent 0%, var(--hk-red) 22%, var(--hk-amber) 74%, transparent 100%);
  transform: rotate(var(--pc-slant));
  opacity: .9;
  pointer-events: none;
}

.page-contact .pc-hero__glow {
  position: absolute;
  z-index: 0;
  right: -12%;
  bottom: -34%;
  width: 52%;
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle, rgba(200, 241, 75, .2) 0%, rgba(200, 241, 75, 0) 66%);
  pointer-events: none;
}

.page-contact .pc-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .pc-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--hk-font-data);
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(245, 239, 227, .62);
}

.page-contact .pc-crumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .28s var(--hk-ease), border-color .28s var(--hk-ease);
}

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

.page-contact .pc-crumbs [aria-current="page"] {
  color: var(--hk-cream);
}

.page-contact .pc-hero__grid {
  display: grid;
  gap: 30px;
  margin-top: clamp(20px, 3.6vw, 36px);
}

.page-contact .pc-hero__title {
  margin: 12px 0 0;
}

.page-contact .pc-hero__copy .hk-lead {
  margin: 16px 0 0;
  max-width: 46ch;
  color: var(--hk-cream-soft);
}

.page-contact .pc-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .pc-hero__fig {
  margin: 0;
}

.page-contact .pc-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--hk-radius);
  border: 1px solid var(--hk-glass-line);
}

/* ---------- 三条联系渠道 ---------- */
.page-contact .pc-channels__head {
  max-width: 760px;
}

.page-contact .pc-channels__head .hk-h2 {
  margin: 10px 0 0;
}

.page-contact .pc-channels__head .hk-lead {
  margin: 14px 0 0;
}

.page-contact .pc-channels__list {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .pc-channel {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 8px 20px;
  padding: 22px 20px;
  background: rgba(255, 255, 255, .5);
  border: 1px solid var(--pc-edge);
  border-left: 4px solid var(--hk-red);
  border-radius: 2px;
  transition: transform .32s var(--hk-ease), background .32s var(--hk-ease), border-left-color .32s var(--hk-ease);
}

.page-contact .pc-channel:hover {
  background: rgba(255, 255, 255, .88);
  border-left-color: var(--hk-amber);
  transform: translateY(-2px);
}

.page-contact .pc-channel__idx {
  flex: 0 0 auto;
  padding-top: 5px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--hk-steel);
}

.page-contact .pc-channel__main {
  flex: 1 1 240px;
  min-width: 0;
}

.page-contact .pc-channel__main h3 {
  margin: 0;
}

.page-contact .pc-channel__val {
  margin: 8px 0 10px;
  font-family: var(--hk-font-data);
  font-size: clamp(16px, 2.4vw, 19px);
  font-weight: 700;
  letter-spacing: .005em;
  color: var(--hk-plateau);
  overflow-wrap: anywhere;
}

.page-contact .pc-channel__use {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--hk-ink-soft);
}

.page-contact .pc-channel__copy {
  flex: 0 0 auto;
  align-self: center;
  min-height: 38px;
  padding: 8px 16px;
  font-family: var(--hk-font-data);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--hk-ink);
  background: transparent;
  border: 1px solid var(--hk-ink);
  border-radius: 999px;
  cursor: pointer;
  transition: background .28s var(--hk-ease), color .28s var(--hk-ease), border-color .28s var(--hk-ease);
}

.page-contact .pc-channel__copy:hover,
.page-contact .pc-channel__copy:focus-visible {
  background: var(--hk-ink);
  color: var(--hk-cream);
}

.page-contact .pc-channel__copy[data-copied] {
  background: var(--hk-lime);
  border-color: var(--hk-lime);
  color: var(--hk-ink);
}

/* ---------- 受理范围 ---------- */
.page-contact .pc-scope {
  background: var(--hk-plateau);
  color: var(--hk-cream);
}

.page-contact .pc-scope__head {
  max-width: 760px;
}

.page-contact .pc-scope__head .hk-h2 {
  margin: 10px 0 0;
  color: var(--hk-cream);
}

.page-contact .pc-scope__head .hk-lead {
  margin: 14px 0 0;
  color: var(--hk-cream-soft);
}

.page-contact .pc-scope__grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .pc-scope__card {
  padding: 24px 22px;
}

.page-contact .pc-scope__card h3 {
  margin: 0 0 10px;
  color: var(--hk-cream);
}

.page-contact .pc-scope__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--hk-cream-soft);
}

.page-contact .pc-scope__need {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-scope__need li {
  padding: 4px 10px;
  font-family: var(--hk-font-data);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--hk-cream-soft);
  border: 1px solid var(--pc-edge-dark);
  border-radius: 999px;
}

/* ---------- 回复时限 ---------- */
.page-contact .pc-reply__grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  align-items: start;
}

.page-contact .pc-reply__copy .hk-h2 {
  margin: 10px 0 0;
}

.page-contact .pc-reply__copy > p {
  margin: 16px 0 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.76;
  color: var(--hk-ink-soft);
}

.page-contact .pc-reply__steps {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-reply__steps li {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 14px 2px;
  font-size: 15px;
  line-height: 1.6;
  border-top: 1px solid var(--pc-edge);
}

.page-contact .pc-reply__steps li:last-child {
  border-bottom: 1px solid var(--pc-edge);
}

.page-contact .pc-reply__steps .hk-data {
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--hk-red);
}

.page-contact .pc-reply__fig {
  margin: 0;
}

.page-contact .pc-reply__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 2px;
}

/* ---------- 协作与洽谈 ---------- */
.page-contact .pc-partner__head {
  max-width: 760px;
}

.page-contact .pc-partner__head .hk-h2 {
  margin: 10px 0 0;
}

.page-contact .pc-partner__head .hk-lead {
  margin: 14px 0 0;
}

.page-contact .pc-partner__grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(24px, 4vw, 38px);
}

.page-contact .pc-partner__card {
  position: relative;
  padding: 32px 22px 24px;
  background: rgba(255, 255, 255, .55);
  border: 1px solid var(--pc-edge);
  border-radius: 2px;
}

.page-contact .pc-partner__card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: repeating-linear-gradient(90deg, var(--hk-amber) 0 12px, transparent 12px 24px);
}

.page-contact .pc-partner__card h3 {
  margin: 0 0 10px;
}

.page-contact .pc-partner__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--hk-ink-soft);
}

.page-contact .pc-partner__next {
  display: grid;
  gap: 10px;
  margin-top: clamp(26px, 4vw, 40px);
  padding: 24px 22px;
  background: var(--hk-night);
  color: var(--hk-cream);
  border-radius: 2px;
}

.page-contact .pc-partner__next strong {
  font-family: var(--hk-font-head);
  font-size: 20px;
  letter-spacing: -.01em;
  color: var(--hk-lime);
}

.page-contact .pc-partner__next p {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--hk-cream-soft);
}

/* ---------- 青海清晨 ---------- */
.page-contact .pc-plateau {
  position: relative;
  overflow: hidden;
  background: var(--hk-night);
  color: var(--hk-cream);
}

.page-contact .pc-plateau::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: 56%;
  height: 160%;
  background: linear-gradient(180deg, transparent 0%, rgba(200, 241, 75, .08) 42%, transparent 100%);
  transform: rotate(var(--pc-slant));
  pointer-events: none;
}

.page-contact .pc-plateau__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 22px;
}

.page-contact .pc-plateau__grid .hk-h2 {
  margin: 10px 0 0;
  color: var(--hk-cream);
}

.page-contact .pc-plateau__grid p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--hk-cream-soft);
}

.page-contact .pc-plateau__grid p:last-child {
  margin-bottom: 0;
}

.page-contact .pc-plateau__scale {
  position: relative;
  z-index: 1;
  height: 12px;
  margin-top: clamp(26px, 4vw, 40px);
  background: repeating-linear-gradient(90deg, var(--hk-amber) 0 2px, transparent 2px 18px);
  opacity: .42;
}

/* ---------- 提交清单 ---------- */
.page-contact .pc-checklist__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-contact .pc-checklist__grid .hk-h2 {
  margin: 10px 0 0;
}

.page-contact .pc-checklist__intro {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.74;
  color: var(--hk-ink-soft);
}

.page-contact .pc-check__list {
  margin: 24px 0 0;
}

.page-contact .pc-check__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 15px 2px;
  border-bottom: 1px solid var(--pc-edge);
  cursor: pointer;
  transition: background .28s var(--hk-ease);
}

.page-contact .pc-check__item:first-child {
  border-top: 1px solid var(--pc-edge);
}

.page-contact .pc-check__item:hover {
  background: rgba(255, 255, 255, .6);
}

.page-contact .pc-check__box {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: var(--hk-red);
}

.page-contact .pc-check__text {
  font-size: 15px;
  line-height: 1.68;
  color: var(--hk-ink-soft);
}

.page-contact .pc-check__text strong {
  color: var(--hk-ink);
  font-weight: 600;
}

.page-contact .pc-checklist__aside {
  padding: 28px 22px;
  align-self: start;
}

.page-contact .pc-checklist__aside h3 {
  margin: 0 0 14px;
}

.page-contact .pc-checklist__aside p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--hk-ink-soft);
}

.page-contact .pc-checklist__aside p:last-child {
  margin-bottom: 0;
}

.page-contact .pc-checklist__aside a {
  color: var(--hk-red);
  text-decoration: none;
  border-bottom: 1px solid rgba(210, 55, 27, .35);
  transition: border-color .28s var(--hk-ease);
}

.page-contact .pc-checklist__aside a:hover,
.page-contact .pc-checklist__aside a:focus-visible {
  border-bottom-color: var(--hk-red);
}

.page-contact .pc-endrule {
  height: 16px;
  margin-top: clamp(40px, 7vw, 72px);
  background: repeating-linear-gradient(90deg, var(--hk-ink) 0 2px, transparent 2px 14px);
  opacity: .28;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .pc-hero {
    padding-top: 30px;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 48px;
    align-items: end;
  }

  .page-contact .pc-hero__fig img {
    aspect-ratio: 5 / 4;
  }

  .page-contact .pc-scope__grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-contact .pc-scope__card:nth-child(1) {
    grid-column: span 3;
  }

  .page-contact .pc-scope__card:nth-child(2) {
    grid-column: span 3;
  }

  .page-contact .pc-scope__card:nth-child(3) {
    grid-column: span 2;
  }

  .page-contact .pc-scope__card:nth-child(4) {
    grid-column: span 4;
  }

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

@media (min-width: 960px) {
  .page-contact .pc-reply__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }

  .page-contact .pc-checklist__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-contact .pc-plateau__grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: 48px;
  }

  .page-contact .pc-partner__next {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-channel,
  .page-contact .pc-channel__copy,
  .page-contact .pc-check__item,
  .page-contact .pc-crumbs a,
  .page-contact .pc-checklist__aside a {
    transition: none;
  }

  .page-contact .pc-channel:hover {
    transform: none;
  }
}