.page-contact{
  --pc-gap: clamp(16px, 2.2vw, 24px);
  --pc-pad: clamp(20px, 2.6vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero{
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #fff;
  padding-top: calc(var(--header-h) + clamp(22px, 4vw, 52px));
  padding-bottom: clamp(44px, 6vw, 88px);
}
.page-contact .pc-hero__wash{
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(110% 82% at 88% 2%, rgba(47,167,154,.36), rgba(11,27,38,0) 62%),
    radial-gradient(90% 70% at 4% 100%, rgba(92,31,51,.42), rgba(11,27,38,0) 60%),
    linear-gradient(158deg, rgba(35,48,107,.62) 0%, rgba(11,27,38,0) 58%);
}
.page-contact .pc-hero .shell{
  position: relative;
  z-index: 1;
}

.page-contact .crumbs ol{
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 0 0 clamp(20px, 3vw, 36px);
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: rgba(255,255,255,.6);
}
.page-contact .crumbs li{
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-contact .crumbs li + li::before{
  content: "/";
  color: rgba(255,255,255,.28);
}
.page-contact .crumbs a{
  color: rgba(255,255,255,.82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible{
  color: var(--amber);
  border-bottom-color: var(--amber);
}
.page-contact .crumbs [aria-current="page"]{
  color: #fff;
}

.page-contact .pc-hero__intro{
  display: grid;
  gap: clamp(16px, 3vw, 34px);
  grid-template-columns: minmax(0, 1fr);
}
.page-contact .pc-hero__title{
  position: relative;
}
.page-contact .pc-hero h1{
  margin: 0;
  font-size: clamp(42px, 9vw, 88px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -.02em;
}
.page-contact .pc-vnote{
  display: none;
}
.page-contact .pc-hero__lede{
  margin: 0;
  max-width: 44ch;
  font-size: clamp(15px, 1.6vw, 19px);
  line-height: 1.78;
  color: rgba(255,255,255,.86);
}
@media (min-width: 900px){
  .page-contact .pc-hero__intro{
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: end;
    gap: clamp(24px, 4vw, 56px);
  }
  .page-contact .pc-vnote{
    display: block;
    position: absolute;
    top: 4px;
    right: 2px;
    writing-mode: vertical-rl;
    font-size: 11px;
    letter-spacing: .35em;
    color: var(--amber);
    opacity: .85;
  }
}

/* ---------- 双通道卡片 ---------- */
.page-contact .pc-paths{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  margin-top: clamp(28px, 4.4vw, 54px);
}
@media (min-width: 900px){
  .page-contact .pc-paths{
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
  }
}
.page-contact .pc-path{
  display: flex;
  flex-direction: column;
  height: 100%;
  border-radius: var(--r-m);
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.page-contact .pc-path:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
}
.page-contact .pc-path__media{
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: rgba(255,255,255,.06);
}
.page-contact .pc-path__media img{
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}
.page-contact .pc-path__body{
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--pc-pad);
}
.page-contact .pc-path__body h2{
  margin: 10px 0 12px;
  font-size: clamp(21px, 2.4vw, 27px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -.015em;
}
.page-contact .pc-path__desc{
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.78;
}
.page-contact .pc-path__label{
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
}
.page-contact .pc-list{
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
  font-size: 14.5px;
  line-height: 1.7;
}
.page-contact .pc-list li{
  position: relative;
  padding-left: 18px;
}
.page-contact .pc-list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: .5;
}
.page-contact .pc-path__cta{
  margin: auto 0 0;
  padding-top: 6px;
}
.page-contact .pc-path__cta .btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  width: 100%;
}
@media (min-width: 620px){
  .page-contact .pc-path__cta .btn{ width: auto; padding-inline: 28px; }
}

.page-contact .pc-path--coop{
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.16);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  color: #fff;
}
.page-contact .pc-path--coop .eyebrow{ color: var(--amber); }
.page-contact .pc-path--coop .pc-path__desc{ color: rgba(255,255,255,.84); }
.page-contact .pc-path--coop .pc-path__label{ color: var(--teal-soft); }
.page-contact .pc-path--coop .pc-list li::before{ background: var(--amber); opacity: .9; }

.page-contact .pc-path--fix{
  background: var(--mist);
  border: 1px solid var(--line);
  color: var(--text);
}
.page-contact .pc-path--fix .eyebrow{ color: var(--teal); }
.page-contact .pc-path--fix .pc-path__desc{ color: #3c5058; }
.page-contact .pc-path--fix .pc-path__label{ color: var(--orange); }
.page-contact .pc-path--fix .pc-list li::before{ background: var(--teal); opacity: .8; }
.page-contact .pc-path--fix .pc-list--check li::before{ background: var(--orange); opacity: 1; }

/* ---------- 区块标题 ---------- */
.page-contact .pc-sec-head{
  display: grid;
  gap: 12px;
  margin-bottom: clamp(24px, 3.4vw, 42px);
}
.page-contact .pc-sec-head h2{
  margin: 8px 0 0;
  font-size: clamp(26px, 4.2vw, 46px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
}
.page-contact .pc-sec-head__aside{
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}
@media (min-width: 900px){
  .page-contact .pc-sec-head{
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: end;
    gap: clamp(22px, 4vw, 60px);
  }
}

/* ---------- 四条合作方向 ---------- */
.page-contact .pc-directions{
  background: var(--mist);
  color: var(--text);
}
.page-contact .pc-directions .eyebrow{ color: var(--teal); }
.page-contact .pc-directions .pc-sec-head__aside{ color: #3c5058; }

.page-contact .pc-ribbon{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}
@media (min-width: 820px){
  .page-contact .pc-ribbon{
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 1.06fr) minmax(0, .94fr) minmax(0, .84fr);
    gap: 0;
    border-radius: var(--r-m);
    overflow: hidden;
    box-shadow: var(--shadow-1);
  }
}
.page-contact .pc-ribbon__seg{
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: var(--pc-pad);
  color: #fff;
  border-radius: var(--r-s);
}
@media (min-width: 820px){
  .page-contact .pc-ribbon__seg{ border-radius: 0; }
}
.page-contact .pc-ribbon__seg--1{ background: linear-gradient(165deg, #0E6E63 0%, #08443e 100%); }
.page-contact .pc-ribbon__seg--2{ background: linear-gradient(165deg, #178a7e 0%, #0E6E63 100%); }
.page-contact .pc-ribbon__seg--3{ background: linear-gradient(165deg, #23306B 0%, #18214a 100%); }
.page-contact .pc-ribbon__seg--4{ background: linear-gradient(165deg, #5C1F33 0%, #411422 100%); }
.page-contact .pc-ribbon__num{
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--amber);
}
.page-contact .pc-ribbon__seg h3{
  margin: 0;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
}
.page-contact .pc-spec{
  margin: 0;
  display: grid;
  gap: 3px;
  font-size: 14px;
  line-height: 1.68;
}
.page-contact .pc-spec dt{
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  color: var(--amber);
}
.page-contact .pc-spec dt:first-child{ margin-top: 0; }
.page-contact .pc-spec dd{
  margin: 0;
  color: rgba(255,255,255,.88);
}

/* ---------- 反馈要填的内容 ---------- */
.page-contact .pc-feedback{
  position: relative;
  overflow: hidden;
  background: var(--indigo);
  color: #fff;
}
.page-contact .pc-feedback::before{
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(80% 62% at 96% 0%, rgba(47,167,154,.34), rgba(35,48,107,0) 64%),
    radial-gradient(70% 60% at 0% 96%, rgba(228,80,42,.22), rgba(35,48,107,0) 62%);
}
.page-contact .pc-feedback .shell{
  position: relative;
  z-index: 1;
}
.page-contact .pc-feedback .eyebrow{ color: var(--amber); }
.page-contact .pc-feedback .pc-sec-head__aside{ color: rgba(255,255,255,.84); }

.page-contact .pc-fields{
  border-top: 1px solid rgba(255,255,255,.16);
}
.page-contact .pc-field{
  display: grid;
  gap: 6px;
  padding: clamp(14px, 2vw, 20px);
  padding-left: clamp(12px, 2vw, 20px);
  border-bottom: 1px solid rgba(255,255,255,.16);
  border-left: 3px solid transparent;
  transition: background .24s var(--ease), border-color .24s var(--ease);
}
.page-contact .pc-field:nth-child(odd){ border-left-color: rgba(47,167,154,.6); }
.page-contact .pc-field:nth-child(even){ border-left-color: rgba(242,166,59,.5); }
.page-contact .pc-field:hover{ background: rgba(255,255,255,.05); }
.page-contact .pc-field__label{
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.01em;
}
.page-contact .pc-field__label .mono{
  color: var(--amber);
  font-size: 12px;
  letter-spacing: .14em;
}
.page-contact .pc-field__desc{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: rgba(255,255,255,.82);
}
@media (min-width: 760px){
  .page-contact .pc-field{
    grid-template-columns: minmax(150px, 230px) minmax(0, 1fr);
    align-items: baseline;
    gap: clamp(16px, 3vw, 42px);
    border-left-width: 0;
    padding-left: 0;
    border-left-style: solid;
    border-left-color: transparent;
    background-image: linear-gradient(96deg, rgba(255,255,255,.07) 0 26%, rgba(255,255,255,0) 26%);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    opacity: 1;
  }
  .page-contact .pc-field:nth-child(odd){ background-image: linear-gradient(96deg, rgba(47,167,154,.18) 0 26%, rgba(255,255,255,0) 26%); }
  .page-contact .pc-field:nth-child(even){ background-image: linear-gradient(96deg, rgba(242,166,59,.14) 0 26%, rgba(255,255,255,0) 26%); }
}

.page-contact .pc-after{
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 3.2vw, 38px);
}
@media (min-width: 760px){
  .page-contact .pc-after{
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(14px, 2vw, 20px);
  }
}
.page-contact .pc-after__item{
  padding: 16px 18px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--r-s);
  background: rgba(255,255,255,.06);
}
.page-contact .pc-after__item .mono{
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--amber);
}
.page-contact .pc-after__item p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(255,255,255,.88);
}

/* ---------- 联系渠道 ---------- */
.page-contact .pc-channels{
  background: var(--ink);
  color: #fff;
}
.page-contact .pc-channels__grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 40px);
}
@media (min-width: 900px){
  .page-contact .pc-channels__grid{
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    align-items: center;
  }
}
.page-contact .pc-channels .eyebrow{ color: var(--teal-soft); }
.page-contact .pc-channels__intro h2{
  margin: 8px 0 14px;
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
}
.page-contact .pc-channels__intro p{
  margin: 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255,255,255,.82);
}
.page-contact .pc-channels__more{
  margin-top: 18px;
}
.page-contact .pc-channels__more a{
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(242,166,59,.45);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .pc-channels__more a:hover,
.page-contact .pc-channels__more a:focus-visible{
  color: #fff;
  border-bottom-color: #fff;
}

.page-contact .pc-card{
  border-radius: var(--r-m);
  padding: clamp(20px, 3vw, 32px);
  box-shadow: var(--shadow-2);
}
.page-contact .pc-card__list{
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}
.page-contact .pc-card__row{
  display: grid;
  gap: 5px;
}
.page-contact .pc-card__k{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--amber);
}
.page-contact .pc-card__v{
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.8vw, 20px);
  font-weight: 500;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
  color: #fff;
  word-break: break-word;
}
.page-contact .pc-card__v--addr{
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: .01em;
}
.page-contact .pc-card__note{
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,.18);
  font-size: 13.5px;
  line-height: 1.72;
  color: rgba(255,255,255,.76);
}

/* ---------- 响应与流程 ---------- */
.page-contact .pc-respond{
  background: var(--mist);
  color: var(--text);
}
.page-contact .pc-respond .eyebrow{ color: var(--orange); }
.page-contact .pc-respond .pc-sec-head__aside{ color: #3c5058; }

.page-contact .pc-steps{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  position: relative;
}
@media (min-width: 760px){
  .page-contact .pc-steps{
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(14px, 2.2vw, 26px);
  }
  .page-contact .pc-steps::before{
    content: "";
    position: absolute;
    top: 5px;
    left: 6px;
    right: 6px;
    height: 2px;
    background: linear-gradient(90deg, var(--teal) 0%, var(--teal-soft) 42%, var(--orange) 74%, var(--amber) 100%);
    opacity: .5;
  }
}
.page-contact .pc-step{
  position: relative;
  padding-left: 24px;
  padding-top: 4px;
}
@media (min-width: 760px){
  .page-contact .pc-step{
    padding-left: 0;
    padding-top: 26px;
  }
  .page-contact .pc-step::before{
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--orange);
    box-shadow: 0 0 0 4px rgba(228,80,42,.16);
  }
}
.page-contact .pc-step::after{
  content: "";
  position: absolute;
  left: 5px;
  top: 16px;
  bottom: 0;
  width: 2px;
  background: var(--line);
}
.page-contact .pc-step:last-child::after{ display: none; }
@media (min-width: 760px){
  .page-contact .pc-step::after{ display: none; }
}
.page-contact .pc-step__t{
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--teal);
}
.page-contact .pc-step p{
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: #33474f;
}

/* ---------- 合作常见问答 ---------- */
.page-contact .pc-faq{
  background: linear-gradient(180deg, #ffffff 0%, var(--mist) 100%);
  color: var(--text);
}
.page-contact .pc-faq .eyebrow{ color: var(--teal); }
.page-contact .pc-faq .pc-sec-head__aside{ color: #3c5058; }

.page-contact .pc-faq__list{
  border-top: 1px solid var(--line);
}
.page-contact .pc-faq details{
  border-bottom: 1px solid var(--line);
}
.page-contact .pc-faq summary{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 56px;
  padding: 10px 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(16px, 1.9vw, 18px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -.01em;
  transition: color .2s var(--ease);
}
.page-contact .pc-faq summary::-webkit-details-marker{ display: none; }
.page-contact .pc-faq summary:hover,
.page-contact .pc-faq summary:focus-visible{ color: var(--teal); }
.page-contact .pc-faq summary::after{
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 500;
  color: var(--teal);
}
.page-contact .pc-faq details[open] summary::after{
  content: "−";
  color: var(--orange);
}
.page-contact .pc-faq details p{
  margin: 0;
  padding: 0 0 20px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: #33474f;
}
.page-contact .pc-faq__tail{
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: #3c5058;
}
.page-contact .pc-faq__tail a{
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(14,110,99,.35);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .pc-faq__tail a:hover,
.page-contact .pc-faq__tail a:focus-visible{
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  .page-contact .pc-path,
  .page-contact .pc-field,
  .page-contact .pc-faq summary{
    transition: none;
  }
  .page-contact .pc-path:hover{ transform: none; }
}
<<<END>>>