.page-contact{
  --pc-amber-ink:#A85800;
  --pc-ink-soft:#3E5850;
  --pc-sec-pad:clamp(38px,6vw,78px);
  background:var(--ink-900);
  color:var(--paper);
  font-family:var(--font-body);
  overflow-x:hidden;
}

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

.page-contact .pc-lede{
  margin:14px 0 0;
  color:var(--mist);
  font-size:clamp(15px,1.6vw,17px);
  line-height:1.75;
}

.page-contact .pc-lede--ink{
  color:var(--pc-ink-soft);
}

.page-contact .kicker--ink{
  color:var(--pc-amber-ink);
}

/* ---------- hero ---------- */
.page-contact .contact-hero{
  position:relative;
  padding:clamp(26px,4vw,44px) 0 clamp(38px,5vw,72px);
  background:
    radial-gradient(circle at 86% -12%, rgba(79,240,208,.16), transparent 58%),
    var(--ink-900);
  border-bottom:1px solid var(--line-faint);
}

.page-contact .contact-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right, var(--line-faint) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-faint) 1px, transparent 1px);
  background-size:76px 76px;
  opacity:.55;
  pointer-events:none;
}

.page-contact .contact-hero__inner{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(26px,4vw,46px);
  align-items:start;
}

.page-contact .breadcrumb{
  margin-bottom:22px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--grey);
}

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

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

.page-contact .breadcrumb__sep{
  margin:0 8px;
  color:var(--grey);
}

.page-contact .contact-hero__inner .kicker{
  color:var(--signal);
}

.page-contact .contact-hero h1{
  margin:12px 0 0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(34px,7vw,72px);
  line-height:1.04;
  letter-spacing:-.02em;
  color:var(--paper);
  max-width:15ch;
}

.page-contact .contact-hero .lede{
  margin:20px 0 0;
  max-width:52ch;
  color:var(--mist);
  font-size:clamp(15px,1.7vw,17px);
  line-height:1.78;
}

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

.page-contact .contact-hero__actions .btn{
  flex:0 1 auto;
}

.page-contact .contact-hero__points{
  list-style:none;
  margin:28px 0 0;
  padding:18px 0 0;
  border-top:1px solid var(--line);
  display:grid;
  gap:10px;
  font-size:14px;
  color:var(--mist);
}

.page-contact .contact-hero__points li{
  display:flex;
  gap:12px;
  align-items:baseline;
}

.page-contact .contact-hero__points .num{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--amber);
}

.page-contact .contact-hero__cards{
  position:relative;
  display:grid;
  gap:14px;
  padding:6px 0;
}

.page-contact .contact-hero__bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:var(--radius-lg);
  opacity:.16;
  pointer-events:none;
}

.page-contact .contact-card{
  position:relative;
  z-index:1;
  background:var(--paper);
  color:var(--ink-900);
  border:1px solid rgba(8,23,19,.2);
  border-radius:var(--radius-md);
  padding:18px 20px 20px;
  box-shadow:0 22px 40px -28px rgba(0,0,0,.95);
  transition:border-color .25s var(--ease), transform .25s var(--ease);
}

.page-contact .contact-card:hover{
  border-color:var(--ink-600);
}

.page-contact .contact-card__label{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--pc-amber-ink);
}

.page-contact .contact-card__value{
  margin:10px 0 0;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:clamp(16px,2vw,20px);
  line-height:1.35;
  color:var(--ink-800);
  overflow-wrap:anywhere;
}

.page-contact .contact-card__value--mail{
  font-size:clamp(14px,1.9vw,18px);
}

.page-contact .contact-card__value--addr{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(17px,2.1vw,22px);
  letter-spacing:-.01em;
  color:var(--ink-900);
}

.page-contact .contact-card__note{
  margin:10px 0 0;
  font-size:13.5px;
  line-height:1.7;
  color:var(--pc-ink-soft);
}

/* ---------- 反馈分类 ---------- */
.page-contact .contact-feedback{
  padding:var(--pc-sec-pad) 0;
  background:var(--ink-850);
  border-bottom:1px solid var(--line-faint);
}

.page-contact .contact-feedback h2,
.page-contact .contact-write h2,
.page-contact .contact-flow h2,
.page-contact .contact-faq h2{
  margin:12px 0 0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(27px,4.4vw,46px);
  line-height:1.1;
  letter-spacing:-.02em;
}

.page-contact .fb-list{
  margin-top:clamp(24px,4vw,38px);
  border-top:1px solid var(--line);
}

.page-contact .fb-item{
  border-bottom:1px solid var(--line);
}

.page-contact .fb-item > summary{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:14px;
  padding:18px 2px;
  cursor:pointer;
  list-style:none;
  transition:color .25s var(--ease);
}

.page-contact .fb-item > summary::-webkit-details-marker{
  display:none;
}

.page-contact .fb-item > summary:hover{
  color:var(--signal);
}

.page-contact .fb-idx{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--amber);
}

.page-contact .fb-title{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(19px,2.6vw,26px);
  letter-spacing:-.01em;
  color:var(--paper);
}

.page-contact .fb-plus{
  position:relative;
  width:22px;
  height:22px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-pill);
  transition:transform .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .fb-plus::before,
.page-contact .fb-plus::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  background:var(--signal);
  transform:translate(-50%,-50%);
}

.page-contact .fb-plus::before{
  width:10px;
  height:1px;
}

.page-contact .fb-plus::after{
  width:1px;
  height:10px;
  transition:opacity .25s var(--ease);
}

.page-contact .fb-item[open] .fb-plus{
  border-color:var(--signal);
}

.page-contact .fb-item[open] .fb-plus::after{
  opacity:0;
}

.page-contact .fb-body{
  padding:0 2px 24px;
  display:grid;
  gap:14px;
}

.page-contact .fb-body__lead{
  margin:0;
  max-width:62ch;
  font-size:14.5px;
  line-height:1.75;
  color:var(--mist);
}

.page-contact .fb-tips{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:8px;
}

.page-contact .fb-tips li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  line-height:1.7;
  color:var(--signal-soft);
}

.page-contact .fb-tips li::before{
  content:"";
  position:absolute;
  left:0;
  top:.7em;
  width:7px;
  height:1px;
  background:var(--amber);
}

/* ---------- 怎么写 ---------- */
.page-contact .contact-write{
  padding:var(--pc-sec-pad) 0;
  background:var(--paper);
  color:var(--ink-900);
}

.page-contact .contact-write__inner{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(26px,4vw,48px);
  align-items:start;
}

.page-contact .write-steps{
  list-style:none;
  margin:28px 0 0;
  padding:0;
  display:grid;
  gap:22px;
}

.page-contact .write-steps li{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:14px;
  padding-top:20px;
  border-top:1px solid rgba(8,23,19,.14);
}

.page-contact .write-steps__num{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--pc-amber-ink);
  padding-top:3px;
}

.page-contact .write-steps h3{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(18px,2.2vw,22px);
  letter-spacing:-.01em;
  color:var(--ink-900);
}

.page-contact .write-steps p{
  margin:8px 0 0;
  font-size:14.5px;
  line-height:1.75;
  color:var(--pc-ink-soft);
  max-width:44ch;
}

.page-contact .write-sheet{
  background:var(--paper-2);
  border:1px solid rgba(8,23,19,.16);
  border-radius:var(--radius-lg);
  padding:22px 22px 24px;
  box-shadow:0 26px 46px -34px rgba(8,23,19,.7);
}

.page-contact .write-sheet__label{
  margin:0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--pc-amber-ink);
}

.page-contact .write-sheet__lines{
  margin:16px 0 0;
  display:grid;
  gap:0;
}

.page-contact .write-sheet__lines > div{
  display:grid;
  grid-template-columns:86px 1fr;
  gap:12px;
  padding:12px 0;
  border-top:1px dashed rgba(8,23,19,.22);
}

.page-contact .write-sheet__lines dt{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-600);
}

.page-contact .write-sheet__lines dd{
  margin:0;
  font-family:var(--font-mono);
  font-size:13.5px;
  line-height:1.6;
  color:var(--ink-800);
  overflow-wrap:anywhere;
}

.page-contact .write-sheet__foot{
  margin:16px 0 0;
  padding-top:14px;
  border-top:1px solid rgba(8,23,19,.16);
  font-size:13px;
  line-height:1.7;
  color:var(--pc-ink-soft);
}

/* ---------- 流程 ---------- */
.page-contact .contact-flow{
  padding:var(--pc-sec-pad) 0;
  background:var(--ink-900);
  border-top:1px solid var(--line-faint);
  border-bottom:1px solid var(--line-faint);
}

.page-contact .flow-grid{
  list-style:none;
  margin:clamp(24px,4vw,38px) 0 0;
  padding:0;
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}

.page-contact .flow-step{
  position:relative;
  padding:20px 18px 22px;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  transition:border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .flow-step:hover{
  border-color:var(--line-strong);
  background:var(--ink-700);
}

.page-contact .flow-step__num{
  display:block;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(26px,4vw,38px);
  line-height:1;
  letter-spacing:-.02em;
  color:var(--amber);
}

.page-contact .flow-step h3{
  margin:14px 0 0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:19px;
  letter-spacing:-.01em;
  color:var(--paper);
}

.page-contact .flow-step p{
  margin:8px 0 0;
  font-size:14px;
  line-height:1.72;
  color:var(--mist);
}

.page-contact .flow-note{
  margin:24px 0 0;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  line-height:1.7;
  color:var(--signal-soft);
  max-width:70ch;
}

/* ---------- 地址与备案 ---------- */
.page-contact .contact-address{
  position:relative;
  overflow:hidden;
  padding:var(--pc-sec-pad) 0;
  background:var(--ink-900);
}

.page-contact .addr-bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.22;
  pointer-events:none;
}

.page-contact .addr-inner{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:22px;
  align-items:end;
}

.page-contact .contact-address .kicker{
  color:var(--signal);
}

.page-contact .addr-text{
  margin:12px 0 0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(22px,4vw,38px);
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--paper);
  max-width:20ch;
}

.page-contact .addr-sub{
  margin:12px 0 0;
  max-width:48ch;
  font-size:14px;
  line-height:1.75;
  color:var(--mist);
}

.page-contact .addr-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:flex-start;
}

/* ---------- 答疑 ---------- */
.page-contact .contact-faq{
  padding:var(--pc-sec-pad) 0;
  background:var(--paper-2);
  color:var(--ink-900);
}

.page-contact .contact-faq__inner{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(24px,4vw,44px);
  align-items:start;
}

.page-contact .contact-faq__head h2{
  color:var(--ink-900);
}

.page-contact .contact-faq__more{
  margin-top:18px;
  color:var(--ink-900);
  border-color:rgba(8,23,19,.34);
}

.page-contact .contact-faq__more:hover{
  color:var(--ink-700);
  border-color:var(--ink-600);
}

.page-contact .faq-links{
  list-style:none;
  margin:0;
  padding:0;
  border-top:1px solid rgba(8,23,19,.16);
}

.page-contact .faq-links li{
  border-bottom:1px solid rgba(8,23,19,.16);
}

.page-contact .faq-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:15px 2px;
  font-size:14.5px;
  line-height:1.6;
  color:var(--ink-800);
  text-decoration:none;
  transition:color .25s var(--ease), padding-left .25s var(--ease);
}

.page-contact .faq-links a::after{
  content:"→";
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--ink-600);
  transition:transform .25s var(--ease);
}

.page-contact .faq-links a:hover{
  color:var(--ink-600);
  padding-left:8px;
}

.page-contact .faq-links a:hover::after{
  transform:translateX(4px);
}

.page-contact .contact-faq__foot{
  grid-column:1 / -1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:6px;
  padding-top:18px;
  border-top:1px solid rgba(8,23,19,.16);
}

.page-contact .contact-faq__foot p{
  margin:0;
  flex:1 1 260px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--pc-ink-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .page-contact .contact-hero__points{
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:14px;
  }

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

  .page-contact .contact-faq__inner{
    grid-template-columns:1fr;
  }
}

@media (min-width:900px){
  .page-contact .contact-hero__inner{
    grid-template-columns:1.06fr .94fr;
    gap:clamp(30px,4vw,56px);
  }

  .page-contact .contact-hero h1{
    max-width:14ch;
  }

  .page-contact .contact-hero__cards{
    padding-top:14px;
  }

  .page-contact .contact-card:nth-of-type(2){
    margin-left:20px;
  }

  .page-contact .contact-card:nth-of-type(3){
    margin-left:40px;
  }

  .page-contact .contact-write__inner{
    grid-template-columns:1.05fr .95fr;
  }

  .page-contact .write-sheet{
    position:sticky;
    top:96px;
  }

  .page-contact .flow-grid{
    grid-template-columns:repeat(4,minmax(0,1fr));
  }

  .page-contact .addr-inner{
    grid-template-columns:1.2fr .8fr;
    gap:32px;
  }

  .page-contact .addr-tags{
    justify-content:flex-end;
  }

  .page-contact .contact-faq__inner{
    grid-template-columns:1fr 1fr;
  }

  .page-contact .contact-faq__head{
    position:sticky;
    top:96px;
  }
}

@media (prefers-reduced-motion:reduce){
  .page-contact .contact-card,
  .page-contact .fb-plus,
  .page-contact .faq-links a,
  .page-contact .faq-links a::after,
  .page-contact .flow-step{
    transition:none;
  }
}
<<<END>>>