.page-contact{
  --contact-doc:620px;
  --contact-rail:340px;
  --cut-panel:polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-contact .contact-hero{
  position:relative;
  overflow:hidden;
  padding-top:calc(var(--header-h) + 46px);
  padding-bottom:48px;
  border-bottom:1px solid var(--line-600);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(34,224,214,.16), transparent 62%),
    linear-gradient(180deg, var(--ink-900), var(--ink-950));
}

.page-contact .contact-hero::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(242,246,250,.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(242,246,250,.045) 1px, transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.9), transparent 80%);
  mask-image:linear-gradient(180deg, rgba(0,0,0,.9), transparent 80%);
}

.page-contact .contact-hero .container{
  position:relative;
  z-index:1;
}

.page-contact .contact-hero__title{
  margin:20px 0 0;
  font-size:clamp(2.2rem, 6vw, 3.4rem);
  font-weight:900;
  line-height:.98;
  letter-spacing:-.02em;
  color:var(--paper);
  max-width:15em;
}

.page-contact .contact-hero__lead{
  margin:22px 0 0;
  max-width:640px;
  font-size:1rem;
  line-height:1.85;
  color:var(--mute);
}

.page-contact .contact-hero__meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  margin:28px 0 0;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.04em;
  color:var(--mute);
}

.page-contact .contact-hero__meta li{
  display:flex;
  align-items:center;
  gap:8px;
  font-variant-numeric:tabular-nums;
}

.page-contact .contact-hero__meta li::before{
  content:"";
  width:16px;
  height:1px;
  flex:0 0 auto;
  background:var(--cyan);
}

.page-contact .contact-shell{
  display:grid;
  gap:40px;
  padding-top:44px;
  padding-bottom:72px;
}

/* 联系信息带 */
.page-contact .contact-rail{
  min-width:0;
}

.page-contact .info-card{
  background:var(--ink-900);
  border:1px solid var(--line-600);
  clip-path:var(--cut-panel);
  padding-bottom:22px;
}

.page-contact .info-card__media{
  margin:0;
  overflow:hidden;
}

.page-contact .info-card__media img{
  display:block;
  width:100%;
  height:auto;
  aspect-ratio:4 / 3;
  object-fit:cover;
  filter:saturate(.85) contrast(1.05);
}

.page-contact .info-card__title{
  margin:20px 0 0;
  padding:0 20px;
  font-size:1.25rem;
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--paper);
}

.page-contact .info-card__list{
  margin:14px 0 0;
  padding:0 20px;
}

.page-contact .info-card__row{
  display:grid;
  grid-template-columns:58px minmax(0, 1fr);
  gap:10px;
  padding:12px 0;
  border-top:1px solid var(--line-600);
}

.page-contact .info-card__key{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.08em;
  color:var(--mute);
  padding-top:3px;
}

.page-contact .info-card__val{
  margin:0;
  font-size:.9375rem;
  line-height:1.65;
  color:var(--paper);
  overflow-wrap:anywhere;
}

.page-contact .info-card__val a{
  color:var(--cyan);
  text-decoration:none;
  border-bottom:1px solid rgba(34,224,214,.4);
}

.page-contact .info-card__val a:hover,
.page-contact .info-card__val a:focus-visible{
  border-bottom-color:var(--cyan);
}

.page-contact .info-card__cta{
  display:block;
  margin:18px 20px 0;
  text-align:center;
}

.page-contact .info-card__note{
  margin:14px 20px 0;
  font-size:.8125rem;
  line-height:1.75;
  color:var(--mute);
}

/* 主列文档式阅读 */
.page-contact .contact-main{
  min-width:0;
}

.page-contact .block{
  max-width:var(--contact-doc);
}

.page-contact .block + .block{
  margin-top:56px;
  padding-top:48px;
  border-top:1px solid var(--line-600);
}

.page-contact .block__title{
  margin:10px 0 0;
  font-size:clamp(1.45rem, 4vw, 1.85rem);
  font-weight:900;
  line-height:1.2;
  letter-spacing:-.015em;
  color:var(--paper);
}

.page-contact .block__lead{
  margin:14px 0 0;
  font-size:.9688rem;
  line-height:1.85;
  color:var(--mute);
}

.page-contact .block__lead a,
.page-contact .channel a,
.page-contact .template-note a{
  color:var(--cyan);
  text-decoration:none;
  border-bottom:1px solid rgba(34,224,214,.42);
}

.page-contact .block__lead a:hover,
.page-contact .channel a:hover,
.page-contact .template-note a:hover{
  border-bottom-color:var(--cyan);
}

/* 通道列表 */
.page-contact .channel-list{
  list-style:none;
  margin:26px 0 0;
  padding:0;
}

.page-contact .channel{
  display:grid;
  grid-template-columns:52px minmax(0, 1fr);
  gap:12px;
  padding:18px 0;
  border-top:1px solid var(--line-600);
}

.page-contact .channel:last-child{
  border-bottom:1px solid var(--line-600);
}

.page-contact .channel__label{
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.06em;
  color:var(--cyan);
  padding-top:4px;
}

.page-contact .channel__body h3{
  margin:0;
  font-size:1rem;
  font-weight:700;
  line-height:1.5;
  color:var(--paper);
}

.page-contact .channel__body p{
  margin:8px 0 0;
  font-size:.9375rem;
  line-height:1.8;
  color:var(--mute);
}

/* 反馈准备 */
.page-contact .prep-list{
  list-style:none;
  margin:24px 0 0;
  padding:0;
}

.page-contact .prep{
  display:grid;
  grid-template-columns:32px minmax(0, 1fr);
  gap:12px;
  padding:16px 0;
  border-top:1px solid var(--line-600);
}

.page-contact .prep:last-child{
  border-bottom:1px solid var(--line-600);
}

.page-contact .prep__num{
  font-family:var(--font-mono);
  font-size:.8125rem;
  font-variant-numeric:tabular-nums;
  color:var(--amber);
  padding-top:2px;
}

.page-contact .prep__body h3{
  margin:0;
  font-size:.9688rem;
  font-weight:700;
  color:var(--paper);
}

.page-contact .prep__body p{
  margin:6px 0 0;
  font-size:.9375rem;
  line-height:1.8;
  color:var(--mute);
}

/* 来信模板 */
.page-contact .template-block{
  margin-top:26px;
  background:var(--ink-950);
  border:1px solid var(--line-600);
  border-left:3px solid var(--cyan);
  padding:16px 16px 18px;
}

.page-contact .template-block__cap{
  margin:0;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.1em;
  color:var(--cyan);
  text-transform:uppercase;
}

.page-contact .template-block__body{
  margin:12px 0 0;
  padding:0;
  font-family:var(--font-mono);
  font-size:.8125rem;
  line-height:2;
  font-variant-numeric:tabular-nums;
  color:var(--paper);
  white-space:pre-wrap;
  overflow-wrap:anywhere;
  overflow-x:auto;
}

.page-contact .template-block__body code{
  font-family:inherit;
  font-size:inherit;
  color:inherit;
}

.page-contact .template-note{
  margin:14px 0 0;
  font-size:.875rem;
  line-height:1.8;
  color:var(--mute);
}

/* 合作类型 */
.page-contact .coop-list{
  list-style:none;
  margin:26px 0 0;
  padding:0;
  display:grid;
  gap:14px;
}

.page-contact .coop{
  background:var(--ink-800);
  border:1px solid var(--line-600);
  clip-path:var(--cut-panel);
  padding:20px;
}

.page-contact .coop h3{
  margin:12px 0 0;
  font-size:1.0625rem;
  font-weight:700;
  line-height:1.45;
  color:var(--paper);
}

.page-contact .coop p{
  margin:8px 0 0;
  font-size:.9375rem;
  line-height:1.8;
  color:var(--mute);
}

.page-contact .coop .coop__fit{
  margin:14px 0 0;
  padding-top:12px;
  border-top:1px dashed var(--line-600);
  font-size:.875rem;
  color:var(--paper);
}

/* 处理流程 */
.page-contact .flow{
  list-style:none;
  margin:26px 0 0;
  padding:0;
  display:grid;
  gap:22px;
}

.page-contact .flow__step{
  position:relative;
  padding-left:26px;
}

.page-contact .flow__step::before{
  content:"";
  position:absolute;
  left:0;
  top:8px;
  width:14px;
  height:2px;
  background:var(--cyan);
}

.page-contact .flow__num{
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
}

.page-contact .flow__step h3{
  margin:6px 0 0;
  font-size:.9688rem;
  font-weight:700;
  color:var(--paper);
}

.page-contact .flow__step p{
  margin:6px 0 0;
  font-size:.9063rem;
  line-height:1.8;
  color:var(--mute);
}

/* 末段横幅 */
.page-contact .contact-banner{
  margin-top:64px;
  max-width:var(--contact-doc);
  overflow:hidden;
  clip-path:var(--cut-panel);
  border:1px solid var(--line-600);
  background:var(--ink-900);
}

.page-contact .contact-banner__media{
  margin:0;
  overflow:hidden;
}

.page-contact .contact-banner__media img{
  display:block;
  width:100%;
  height:auto;
  aspect-ratio:16 / 6;
  object-fit:cover;
  filter:saturate(.95);
}

.page-contact .contact-banner__body{
  padding:22px 20px 24px;
}

.page-contact .contact-banner__body h2{
  margin:0;
  font-size:1.3rem;
  font-weight:900;
  line-height:1.3;
  letter-spacing:-.01em;
  color:var(--paper);
}

.page-contact .contact-banner__body p{
  margin:10px 0 0;
  font-size:.9375rem;
  line-height:1.8;
  color:var(--mute);
}

.page-contact .contact-banner__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:18px;
}

/* 平板与桌面 */
@media (min-width:640px){
  .page-contact .flow{
    grid-template-columns:1fr 1fr;
    gap:26px 30px;
  }

  .page-contact .contact-banner__body{
    padding:26px 26px 28px;
  }
}

@media (min-width:900px){
  .page-contact .contact-hero{
    padding-top:calc(var(--header-h) + 72px);
    padding-bottom:64px;
  }

  .page-contact .contact-shell{
    grid-template-columns:minmax(0, var(--contact-doc)) var(--contact-rail);
    justify-content:space-between;
    gap:56px;
    padding-top:64px;
    padding-bottom:104px;
  }

  .page-contact .contact-main{
    grid-column:1;
    grid-row:1;
  }

  .page-contact .contact-rail{
    grid-column:2;
    grid-row:1;
    align-self:start;
  }

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

  .page-contact .block + .block{
    margin-top:72px;
    padding-top:60px;
  }
}
</