.page-contact{
  --pc-line: rgba(244,241,230,.14);
  --pc-card: #0C2A22;
  --pc-soft: rgba(244,241,230,.045);
  background: var(--ink-900);
  color: var(--bone);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero{
  position: relative;
  padding: clamp(1.6rem,4vw,2.4rem) 0 clamp(2.2rem,5vw,3.4rem);
  background:
    radial-gradient(120% 90% at 84% 0%, rgba(200,255,61,.12), transparent 58%),
    linear-gradient(180deg, #061713 0%, #0a221b 100%);
  border-bottom: var(--edge);
}

.page-contact .contact-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    repeating-linear-gradient(0deg, rgba(244,241,230,.05) 0 1px, transparent 1px 80px),
    repeating-linear-gradient(90deg, rgba(244,241,230,.05) 0 1px, transparent 1px 80px);
  pointer-events:none;
  opacity:.55;
}

.page-contact .contact-hero__inner{
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem,4vw,3rem);
  align-items: start;
}

.page-contact .contact-hero__intro .kicker{
  display: inline-block;
  margin: .9rem 0 .5rem;
  font-family: var(--font-kicker);
  letter-spacing: .2em;
  text-transform: uppercase;
  font-size: .74rem;
  color: var(--lime);
}

.page-contact .contact-hero__intro h1{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 6vw, 3.4rem);
  line-height: 1.18;
  margin: 0 0 1rem;
  letter-spacing: .01em;
  color: var(--bone);
}

.page-contact .contact-hero__intro .lede{
  font-size: clamp(.95rem, 2.3vw, 1.06rem);
  color: var(--bone-78);
  max-width: 46ch;
  margin: 0;
}

.page-contact .channel-rail{
  list-style: none;
  margin: clamp(1.3rem,3vw,1.9rem) 0 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-contact .channel{
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .9rem;
  align-items: start;
  padding: .85rem 1rem;
  border-left: 3px solid var(--sand);
  background: var(--pc-soft);
  transition: background var(--ease), border-color var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within{
  background: rgba(200,255,61,.08);
  border-left-color: var(--lime);
}

.page-contact .channel-idx{
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--lime);
  padding-top: .15rem;
}

.page-contact .channel-name{
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.04rem;
  color: var(--bone);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.page-contact .channel-name:hover,
.page-contact .channel-name:focus-visible{
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-contact .channel-desc{
  margin: .2rem 0 0;
  font-size: .9rem;
  color: var(--bone-60);
  line-height: 1.6;
}

.page-contact .contact-hero__anchor{
  display: grid;
  gap: 1rem;
}

.page-contact .anchor-card{
  border: var(--edge);
  border-left: 4px solid var(--lime);
  background: linear-gradient(160deg, rgba(12,42,34,.96), rgba(6,23,19,.94));
  box-shadow: var(--shadow-hard);
  padding: clamp(1.1rem,3vw,1.6rem);
}

.page-contact .anchor-label{
  margin: 0 0 .18rem;
  font-family: var(--font-kicker);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .7rem;
  color: var(--mist);
}

.page-contact .anchor-value{
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.6vw, 1.35rem);
  line-height: 1.4;
  color: var(--bone);
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--lime-28);
  overflow-wrap: anywhere;
}

.page-contact .anchor-value:last-child{
  margin-bottom: 0;
}

.page-contact .anchor-value--sm{
  font-size: clamp(.85rem, 2.1vw, 1rem);
  font-family: var(--font-body);
  font-weight: 500;
}

.page-contact .hero-figure{
  margin: 0;
  border: var(--edge);
  background: var(--ink-800);
}

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

.page-contact .media-caption{
  display: block;
  padding: .55rem .8rem;
  font-size: .78rem;
  color: var(--bone-60);
  border-top: 1px solid var(--pc-line);
}

/* ---------- 通用章节 ---------- */
.page-contact .section{
  padding: clamp(2.2rem,5.5vw,4rem) 0;
  border-top: 1px solid var(--pc-line);
}

.page-contact .section .kicker{
  display: inline-block;
  margin: 0 0 .45rem;
  font-family: var(--font-kicker);
  letter-spacing: .2em;
  text-transform: uppercase;
  font-size: .74rem;
  color: var(--sand);
}

.page-contact .section-title{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4vw, 2.3rem);
  line-height: 1.28;
  margin: 0 0 .8rem;
  color: var(--bone);
}

.page-contact .section-lede{
  margin: 0 0 1.4rem;
  max-width: 62ch;
  color: var(--bone-78);
  font-size: clamp(.94rem, 2.2vw, 1.02rem);
}

.page-contact .mini-label{
  margin: 0 0 .3rem;
  font-family: var(--font-kicker);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .7rem;
  color: var(--mist);
}

/* ---------- 客服通道 ---------- */
.page-contact .support-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-contact .support-card{
  border: var(--edge);
  background: linear-gradient(150deg, rgba(12,42,34,.94), rgba(6,23,19,.92));
  box-shadow: var(--shadow-hard);
  padding: clamp(1.1rem,2.8vw,1.6rem);
}

.page-contact .support-card--mail{
  border-top: 4px solid var(--lime);
}

.page-contact .support-card--phone{
  border-top: 4px solid var(--sand);
}

.page-contact .support-mail{
  margin: .1rem 0 .8rem;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.7vw, 1.28rem);
  line-height: 1.45;
  color: var(--bone);
  overflow-wrap: anywhere;
}

.page-contact .support-mail--sm{
  font-size: clamp(.92rem, 2.3vw, 1.05rem);
}

.page-contact .support-text{
  margin: 0 0 .7rem;
  font-size: .93rem;
  color: var(--bone-78);
  line-height: 1.7;
}

.page-contact .support-text:last-child{
  margin-bottom: 0;
}

.page-contact .support-text strong{
  color: var(--bone);
}

/* ---------- 账号与收藏 ---------- */
.page-contact .prep-list{
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: .55rem;
}

.page-contact .prep-list li{
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .75rem;
  align-items: start;
  padding: .7rem .85rem;
  background: var(--pc-soft);
  border-left: 2px solid var(--moss);
  font-size: .93rem;
  color: var(--bone-78);
  line-height: 1.65;
}

.page-contact .prep-list li strong{
  color: var(--bone);
  font-weight: 700;
}

.page-contact .prep-idx{
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--lime);
  padding-top: .1rem;
}

.page-contact .prep-list--tight{
  margin-bottom: 1rem;
}

.page-contact .prep-tabs{
  margin-top: .4rem;
}

.page-contact .prep-tabs .tablist{
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  padding-bottom: .7rem;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .prep-tabs .tab{
  font-family: var(--font-kicker);
  letter-spacing: .1em;
  text-transform: uppercase;
  font-size: .8rem;
  padding: .5rem .95rem;
  border: 1px solid rgba(244,241,230,.22);
  background: transparent;
  color: var(--bone-78);
  cursor: pointer;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}

.page-contact .prep-tabs .tab:hover{
  border-color: var(--lime);
  color: var(--lime);
}

.page-contact .prep-tabs .tab[aria-selected="true"]{
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-900);
  font-weight: 700;
}

.page-contact .tabpanel{
  margin-top: 1rem;
  padding: 1.05rem 1.1rem;
  background: rgba(12,42,34,.7);
  border: 1px solid var(--pc-line);
  border-left: 4px solid var(--sand);
}

.page-contact .tabpanel[hidden]{
  display: none;
}

.page-contact .panel-title{
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  color: var(--bone);
}

.page-contact .tabpanel p{
  margin: 0;
  font-size: .94rem;
  color: var(--bone-78);
  line-height: 1.75;
}

/* ---------- 合作与共建 ---------- */
.page-contact .collab-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-contact .collab-card{
  background: rgba(12,42,34,.55);
  border: 1px solid var(--pc-line);
  border-top: 3px solid var(--lime);
  padding: 1.1rem 1rem;
}

.page-contact .collab-card:nth-child(2){
  border-top-color: var(--sand);
}

.page-contact .collab-card:nth-child(3){
  border-top-color: var(--wine);
}

.page-contact .collab-tag{
  margin: 0 0 .35rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-contact .collab-title{
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--bone);
  line-height: 1.4;
}

.page-contact .collab-card p:last-child{
  margin: 0;
  font-size: .92rem;
  color: var(--bone-78);
  line-height: 1.72;
}

.page-contact .collab-brief{
  margin-top: 1.4rem;
  padding: 1.1rem;
  border: 1px solid var(--pc-line);
  background: var(--pc-soft);
}

.page-contact .collab-mail{
  margin: 0;
  font-size: .93rem;
  color: var(--bone-78);
}

.page-contact .mono{
  font-family: var(--font-mono);
  color: var(--lime);
  overflow-wrap: anywhere;
}

/* ---------- 入口与版本 ---------- */
.page-contact .version-strip{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .7rem 1.5rem;
  padding: 1rem 1.15rem;
  border: 1px solid rgba(244,241,230,.22);
  background: linear-gradient(100deg, var(--wine), rgba(91,32,51,.5));
}

.page-contact .version-code{
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3.4vw, 1.9rem);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--bone);
  padding-bottom: .12rem;
  border-bottom: 3px solid var(--lime);
}

.page-contact .version-note{
  font-size: .88rem;
  color: rgba(244,241,230,.85);
  line-height: 1.6;
  flex: 1 1 18rem;
}

.page-contact .entry-slot{
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.1rem 0 1.4rem;
  padding: 0;
}

.page-contact .entry-slot li{
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .04em;
  padding: .34rem .7rem;
  border: 1px solid rgba(244,241,230,.24);
  color: var(--bone-78);
}

.page-contact .detail-stack{
  border-top: 1px solid var(--pc-line);
}

.page-contact .faq-details{
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .faq-details summary{
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: .9rem 0;
  font-weight: 700;
  font-size: .97rem;
  color: var(--bone);
  transition: color var(--ease);
}

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

.page-contact .faq-details summary::after{
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--lime);
}

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

.page-contact .faq-details summary:hover{
  color: var(--lime);
}

.page-contact .faq-details p{
  margin: 0 0 .95rem;
  font-size: .93rem;
  color: var(--bone-78);
  line-height: 1.75;
  max-width: 68ch;
}

/* ---------- 到访说明 ---------- */
.page-contact .visit-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
  align-items: center;
}

.page-contact .visit-copy p{
  margin: 0 0 .9rem;
  font-size: .95rem;
  color: var(--bone-78);
  line-height: 1.75;
}

.page-contact .visit-address{
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 2.4vw, 1.1rem);
  color: var(--bone);
  border-left: 3px solid var(--lime);
  padding: .15rem 0 .15rem 1rem;
  margin: 1rem 0 1.1rem;
  overflow-wrap: anywhere;
}

.page-contact .visit-note{
  margin: .3rem 0 0;
  font-size: .85rem;
  color: var(--bone-60);
}

.page-contact .visit-figure{
  margin: 0;
  border: var(--edge);
  background: var(--ink-800);
}

/* ---------- 下一页索引 ---------- */
.page-contact .section--next{
  background: linear-gradient(180deg, rgba(37,42,92,.22), rgba(6,23,19,0));
}

.page-contact .next-links{
  display: grid;
  grid-template-columns: 1fr;
  gap: .8rem;
}

.page-contact .next-link{
  display: block;
  padding: .95rem 1rem;
  border: 1px solid var(--pc-line);
  background: rgba(244,241,230,.03);
  color: var(--bone);
  text-decoration: none;
  font-size: .9rem;
  line-height: 1.6;
  transition: border-color var(--ease), background var(--ease), transform var(--ease);
}

.page-contact .next-link span{
  display: block;
  margin-bottom: .28rem;
  font-family: var(--font-kicker);
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .72rem;
  color: var(--lime);
}

.page-contact .next-link:hover,
.page-contact .next-link:focus-visible{
  border-color: var(--lime);
  background: rgba(200,255,61,.08);
  transform: translateY(-2px);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px){
  .page-contact .support-grid{
    grid-template-columns: 1.12fr .88fr;
  }
  .page-contact .collab-grid{
    grid-template-columns: repeat(3, minmax(0,1fr));
  }
  .page-contact .next-links{
    grid-template-columns: repeat(2, minmax(0,1fr));
  }
}

@media (min-width: 900px){
  .page-contact .contact-hero__inner{
    grid-template-columns: minmax(0,1.06fr) minmax(0,.94fr);
  }
  .page-contact .visit-grid{
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1080px){
  .page-contact .next-links{
    grid-template-columns: repeat(4, minmax(0,1fr));
  }
  .page-contact .channel-rail{
    gap: .6rem;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-contact .next-link,
  .page-contact .channel,
  .page-contact .channel-name,
  .page-contact .prep-tabs .tab{
    transition: none;
  }
  .page-contact .next-link:hover,
  .page-contact .next-link:focus-visible{
    transform: none;
  }
}