.page-contact{
  --pc-line: var(--c-moss);
  --pc-gap: clamp(18px, 3vw, 32px);
  background: var(--c-ink);
  color: var(--c-text);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-contact img{
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero{
  position: relative;
  margin-block-start: calc(-1 * var(--header-h));
  padding-block: calc(var(--header-h) + 40px) clamp(38px, 6vw, 76px);
  background:
    radial-gradient(120% 100% at 8% 0%, rgba(117, 230, 193, .14), transparent 58%),
    radial-gradient(90% 90% at 92% 10%, rgba(255, 107, 44, .13), transparent 62%),
    var(--c-ink);
  overflow: hidden;
}

.page-contact .pc-hero::after{
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-lime), var(--c-mint), var(--c-orange), transparent);
  opacity: .65;
}

.page-contact .pc-hero__inner{
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: start;
}

.page-contact .breadcrumb{
  margin: 0 0 22px;
  font-size: var(--fs-100);
}

.page-contact .breadcrumb a{
  color: var(--c-silver);
  text-decoration: none;
}

.page-contact .breadcrumb a:hover{
  color: var(--c-lime);
}

.page-contact .breadcrumb li{
  color: var(--c-dim);
}

.page-contact .pc-hero .eyebrow{
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-mint);
}

.page-contact .pc-hero h1{
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 1.3rem + 6.2vw, 5.2rem);
  line-height: .98;
  letter-spacing: -.035em;
  color: var(--c-mist);
}

.page-contact .pc-hero__intro{
  margin: 0;
  max-width: 46ch;
  font-size: var(--fs-400);
  line-height: 1.8;
  color: var(--c-text);
}

.page-contact .pc-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 32px);
}

.page-contact .pc-hero__facts{
  display: grid;
  gap: 16px;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--pc-line);
}

.page-contact .pc-hero__facts dt{
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .14em;
  color: var(--c-silver);
}

.page-contact .pc-hero__facts dd{
  margin: 0;
  font-size: var(--fs-200);
  line-height: 1.6;
  color: var(--c-mist);
  overflow-wrap: anywhere;
}

.page-contact .pc-hero__facts a{
  color: var(--c-mist);
  text-decoration-color: var(--c-moss);
  text-underline-offset: 3px;
}

.page-contact .pc-hero__facts a:hover{
  color: var(--c-lime);
  text-decoration-color: var(--c-lime);
}

.page-contact .pc-hero__figure{
  margin: 0;
  border: 1px solid var(--pc-line);
  border-radius: 30px 8px 30px 8px;
  overflow: hidden;
  background: var(--c-pine);
}

.page-contact .pc-hero__figure img{
  width: 100%;
  object-fit: cover;
}

.page-contact .pc-hero__figure figcaption{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 16px;
  font-size: var(--fs-100);
  color: var(--c-silver);
  border-top: 1px solid var(--pc-line);
}

.page-contact .pc-hero__figure .num{
  color: var(--c-lime);
}

/* ---------- 通用章节标题 ---------- */
.page-contact .pc-sec-head{
  max-width: 64ch;
}

.page-contact .pc-sec-head .eyebrow{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-lime);
}

.page-contact [data-section].is-current .eyebrow::after{
  content: "";
  display: inline-block;
  width: 26px;
  height: 1px;
  margin-left: 10px;
  vertical-align: middle;
  background: var(--c-orange);
}

.page-contact .pc-sec-head h2{
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-700);
  line-height: 1.1;
  letter-spacing: -.022em;
  color: var(--c-mist);
}

.page-contact .pc-sec-head > p:not(.eyebrow){
  margin: 0;
  font-size: var(--fs-300);
  line-height: 1.8;
  color: var(--c-silver);
}

/* ---------- 联系渠道 ---------- */
.page-contact .pc-channels{
  padding-block: clamp(48px, 7vw, 96px);
  background: linear-gradient(180deg, var(--c-ink), var(--c-charcoal));
}

.page-contact .pc-channels__grid{
  display: grid;
  gap: clamp(32px, 5vw, 60px);
  align-items: start;
}

.page-contact .pc-channels__list{
  list-style: none;
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .pc-channel{
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--pc-line);
  border-left: 3px solid var(--c-lime);
  border-radius: 4px var(--r-md) var(--r-md) 4px;
  background: var(--c-pine);
  transition: border-left-color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .pc-channel:hover{
  border-color: var(--c-mint);
  border-left-color: var(--c-mint);
}

.page-contact .pc-channel__kicker{
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .16em;
  color: var(--c-silver);
}

.page-contact .pc-channel__value{
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1rem, .9rem + .6vw, 1.3rem);
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--c-mist);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-contact a.pc-channel__value:hover{
  color: var(--c-lime);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-contact .pc-channel__value--num{
  font-size: clamp(1.2rem, 1rem + 1.2vw, 1.7rem);
  letter-spacing: .05em;
  color: var(--c-lime);
}

.page-contact .pc-channel__value--plain{
  font-family: var(--font-body);
  font-size: var(--fs-400);
  font-weight: 500;
  line-height: 1.7;
  letter-spacing: 0;
}

.page-contact .pc-channel__note{
  margin: 12px 0 0;
  font-size: var(--fs-200);
  line-height: 1.75;
  color: var(--c-silver);
}

.page-contact .pc-channel__hint{
  display: inline-block;
  margin: 14px 0 0;
  padding: 3px 10px;
  border: 1px solid var(--pc-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .06em;
  color: var(--c-mint);
}

.page-contact .pc-path{
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--pc-line);
  border-radius: var(--r-md);
  background: rgba(5, 17, 12, .7);
}

.page-contact .pc-fit{
  margin-top: clamp(20px, 3vw, 28px);
  padding: clamp(18px, 3vw, 24px);
  border: 1px solid var(--pc-line);
  border-radius: var(--r-md);
  background: var(--c-pine);
}

.page-contact .pc-fit h3{
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: var(--fs-500);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--c-mist);
}

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

.page-contact .pc-fit__list > div{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 14px;
  padding-block: 10px;
  border-bottom: 1px dashed var(--pc-line);
}

.page-contact .pc-fit__list > div:last-child{
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .pc-fit__list dt{
  font-size: var(--fs-200);
  color: var(--c-text);
}

.page-contact .pc-fit__list dd{
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .05em;
  color: var(--c-lime);
}

/* ---------- 反馈前准备 ---------- */
.page-contact .pc-prep{
  padding-block: clamp(48px, 7vw, 96px);
  background: var(--c-ink);
}

.page-contact .pc-steps{
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-contact .pc-step{
  position: relative;
  padding: clamp(20px, 3vw, 28px) clamp(18px, 2.4vw, 24px);
  border-top: 2px solid var(--pc-line);
  border-radius: 0 0 var(--r-md) var(--r-md);
  background: linear-gradient(180deg, var(--c-pine), rgba(5, 17, 12, .25));
  transition: border-top-color .25s var(--ease);
}

.page-contact .pc-step.is-revealed{
  border-top-color: var(--c-lime);
}

.page-contact .pc-step__num{
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.1rem);
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--c-lime);
}

.page-contact .pc-step h3{
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: var(--fs-500);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--c-mist);
}

.page-contact .pc-step p{
  margin: 0;
  font-size: var(--fs-200);
  line-height: 1.8;
  color: var(--c-silver);
}

/* ---------- 响应时间 ---------- */
.page-contact .pc-response{
  padding-block: clamp(48px, 7vw, 96px);
  background: var(--c-charcoal);
}

.page-contact .pc-response__grid{
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.page-contact .pc-scale{
  margin-top: clamp(26px, 4vw, 36px);
}

.page-contact .pc-scale__bar{
  position: relative;
  height: 10px;
  border-radius: 999px;
  background: var(--c-moss);
  overflow: hidden;
}

.page-contact .pc-scale__fill{
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  width: 37.5%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--c-mint), var(--c-lime), var(--c-orange));
}

.page-contact .pc-scale__ticks{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 16px;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .08em;
  color: var(--c-silver);
}

.page-contact .pc-scale__live{
  color: var(--c-lime);
}

.page-contact .pc-response__points{
  list-style: none;
  margin: clamp(26px, 4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .pc-response__points li{
  display: grid;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--pc-line);
  font-size: var(--fs-200);
  line-height: 1.75;
  color: var(--c-silver);
}

.page-contact .pc-response__points .num{
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .08em;
  color: var(--c-orange);
}

.page-contact .pc-response__figure{
  margin: 0;
  border: 1px solid var(--pc-line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--c-pine);
}

.page-contact .pc-response__figure figcaption{
  padding: 12px 18px;
  font-size: var(--fs-100);
  letter-spacing: .05em;
  color: var(--c-silver);
  border-top: 1px solid var(--pc-line);
}

/* ---------- 纠错与合作 ---------- */
.page-contact .pc-topics{
  padding-block: clamp(48px, 7vw, 96px);
  background: linear-gradient(180deg, var(--c-charcoal), var(--c-ink));
}

.page-contact .pc-topics__grid{
  display: grid;
  gap: clamp(16px, 2.5vw, 24px);
  margin-top: clamp(28px, 4vw, 44px);
}

.page-contact .pc-topic{
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--pc-line);
  border-radius: var(--r-lg);
  background: var(--c-pine);
}

.page-contact .pc-topic h3{
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-600);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.018em;
  color: var(--c-mist);
}

.page-contact .pc-topic > p:not(.tag){
  margin: 0;
  font-size: var(--fs-300);
  line-height: 1.8;
  color: var(--c-silver);
}

.page-contact .pc-topic__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  width: 100%;
}

.page-contact .pc-topic__list li{
  position: relative;
  padding-left: 20px;
  font-size: var(--fs-200);
  line-height: 1.7;
  color: var(--c-text);
}

.page-contact .pc-topic__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 10px;
  height: 1px;
  background: var(--c-mint);
}

.page-contact .pc-inline-link{
  margin-top: auto;
  font-size: var(--fs-200);
  font-weight: 600;
  color: var(--c-mint);
  text-decoration: none;
  border-bottom: 1px solid var(--c-moss);
  padding-bottom: 2px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .pc-inline-link:hover{
  color: var(--c-lime);
  border-bottom-color: var(--c-lime);
}

/* ---------- 快捷入口 ---------- */
.page-contact .pc-shortcuts{
  padding-block: clamp(48px, 7vw, 96px) clamp(56px, 8vw, 104px);
  background: var(--c-ink);
}

.page-contact .pc-shortcuts__list{
  list-style: none;
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: 0;
  border-top: 1px solid var(--pc-line);
}

.page-contact .pc-shortcuts__list a{
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 18px;
  padding: 16px 2px;
  border-bottom: 1px solid var(--pc-line);
  text-decoration: none;
  color: var(--c-mist);
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}

.page-contact .pc-shortcuts__list a:hover,
.page-contact .pc-shortcuts__list a:focus-visible{
  color: var(--c-lime);
  padding-left: 12px;
}

.page-contact .pc-shortcuts__title{
  font-size: var(--fs-300);
  line-height: 1.6;
}

.page-contact .pc-shortcuts__meta{
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .08em;
  color: var(--c-silver);
}

.page-contact .pc-stamp{
  margin: clamp(26px, 4vw, 36px) 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .1em;
  color: var(--c-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px){
  .page-contact .pc-hero__facts{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px){
  .page-contact .pc-steps{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .pc-response__points li{
    display: flex;
    align-items: baseline;
    gap: 16px;
  }

  .page-contact .pc-response__points .num{
    flex: 0 0 96px;
  }
}

@media (min-width: 960px){
  .page-contact .pc-hero__inner{
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: end;
  }

  .page-contact .pc-channels__grid{
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .page-contact .pc-channels__side{
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-contact .pc-response__grid{
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  }
}

@media (min-width: 1180px){
  .page-contact .pc-steps{
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce){
  .page-contact .pc-channel,
  .page-contact .pc-step,
  .page-contact .pc-inline-link,
  .page-contact .pc-shortcuts__list a{
    transition: none;
  }
}
<<<END>>>