.page-contact{
  --pc-top: 76px;
  color: var(--star);
  padding-bottom: clamp(40px,6vw,80px);
}

.page-contact .crumbs{
  padding-block: 14px 0;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero{
  position: relative;
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(120% 90% at 88% -20%, rgba(255,106,43,.12), transparent 62%),
    radial-gradient(90% 80% at 4% 120%, rgba(45,226,230,.10), transparent 64%);
}
.page-contact .contact-hero__in{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: clamp(20px,3vw,38px);
  padding-block: clamp(28px,5vw,64px);
}
.page-contact .contact-hero__lead h1{
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px,6.4vw,58px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -.02em;
  max-width: 18ch;
}
.page-contact .contact-hero__desc{
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--dust);
}
.page-contact .contact-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}
.page-contact .contact-hero__rail{
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  align-self: start;
}
.page-contact .rail-item{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 13px;
}
.page-contact .rail-key{
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--dust-dim);
}
.page-contact .rail-val{
  color: var(--star);
  font-size: 13px;
  text-align: right;
}
.page-contact .rail-val--mint{ color: var(--mint); }

/* ---------- 通用区块 ---------- */
.page-contact .c-section{
  padding-block: clamp(30px,5vw,62px);
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .c-section--last{ border-bottom: 0; }
.page-contact .c-head{
  display: grid;
  gap: 10px;
  margin-bottom: clamp(18px,3vw,32px);
  max-width: 64ch;
}
.page-contact .c-head h2{
  margin: 0;
  font-size: clamp(21px,3.6vw,32px);
  line-height: 1.25;
  letter-spacing: -.01em;
  font-weight: 800;
}
.page-contact .c-head p{
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--dust);
}

/* ---------- 渠道列表 ---------- */
.page-contact .channels{
  border-top: 1px solid var(--line);
}
.page-contact .channel{
  position: relative;
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  grid-template-areas:
    "idx  idx"
    "name name"
    "val  val"
    "for  for"
    "act  act";
  gap: 8px 14px;
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .channel::before{
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 0;
  height: 1px;
  background: var(--grad);
  transition: width .24s var(--ease);
}
.page-contact .channel:hover::before{ width: 72px; }
.page-contact .channel:hover .channel__name{ color: var(--cyan); }
.page-contact .channel__idx{
  grid-area: idx;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mint);
}
.page-contact .channel__name{
  grid-area: name;
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .01em;
  transition: color .18s var(--ease);
}
.page-contact .channel__val{
  grid-area: val;
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--star);
  overflow-wrap: anywhere;
}
.page-contact .channel__for{
  grid-area: for;
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--dust);
}
.page-contact .channel__act{
  grid-area: act;
  margin-top: 6px;
}
.page-contact .channel__act .btn{ width: 100%; justify-content: center; }

/* ---------- 提交前准备 ---------- */
.page-contact .prep-grid{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: clamp(22px,3.4vw,40px);
}
.page-contact .prep{
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.page-contact .prep__item{
  position: relative;
  display: grid;
  grid-template-columns: 22px minmax(0,1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
  cursor: pointer;
}
.page-contact .prep__check{
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-contact .prep__mark{
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}
.page-contact .prep__mark::after{
  content: "";
  position: absolute;
  left: 6px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--mint);
  border-bottom: 2px solid var(--mint);
  transform: rotate(45deg) scale(.4);
  opacity: 0;
  transition: opacity .16s var(--ease), transform .16s var(--ease);
}
.page-contact .prep__item:hover .prep__mark{ border-color: var(--cyan); }
.page-contact .prep__check:checked + .prep__mark{
  border-color: var(--mint);
  background: rgba(78,240,176,.12);
}
.page-contact .prep__check:checked + .prep__mark::after{
  opacity: 1;
  transform: rotate(45deg) scale(1);
}
.page-contact .prep__check:focus-visible + .prep__mark{
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-contact .prep__title{
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--star);
}
.page-contact .prep__text{
  display: block;
  margin-top: 5px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--dust);
}
.page-contact .prep-figure{
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
}
.page-contact .prep-figure .figure__frame{ overflow: hidden; }
.page-contact .prep-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-contact .prep-figure .figure__cap{
  padding: 12px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--dust-dim);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 处理流程 ---------- */
.page-contact .flow-wrap{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: clamp(22px,3.4vw,40px);
}
.page-contact .flow{
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .flow__step{
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0,1fr);
  gap: 16px;
  padding-bottom: 26px;
}
.page-contact .flow__step:last-child{ padding-bottom: 0; }
.page-contact .flow__step:not(:last-child)::before{
  content: "";
  position: absolute;
  left: 21.5px;
  top: 46px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--line), rgba(44,54,68,.12));
}
.page-contact .flow__num{
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mint);
}
.page-contact .flow__body h3{
  margin: 8px 0 6px;
  font-size: 16px;
  font-weight: 700;
}
.page-contact .flow__body p{
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--dust);
  max-width: 42ch;
}
.page-contact .flow__time{
  display: inline-block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--cyan);
}

.page-contact .quick{
  position: relative;
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 20px;
}
.page-contact .quick__bar{
  height: 2px;
  margin: -20px -20px 18px;
  background: var(--grad);
}
.page-contact .quick__title{
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
}
.page-contact .quick__text{
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--dust);
}
.page-contact .quick__link{
  display: inline-block;
  margin-top: 14px;
  font-size: 13px;
}

/* ---------- 提问示例 ---------- */
.page-contact .ex-grid{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 16px;
}
.page-contact .ex-col{
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--ink-800);
}
.page-contact .ex-col--weak{ border-color: rgba(255,194,77,.34); }
.page-contact .ex-col--good{
  border-color: rgba(78,240,176,.38);
  background:
    linear-gradient(180deg, rgba(78,240,176,.07), transparent 46%),
    var(--ink-800);
}
.page-contact .ex-quote{
  margin: 14px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  font-size: 14px;
  line-height: 1.85;
  color: var(--dust);
}
.page-contact .ex-col--weak .ex-quote{
  border-left-color: var(--amber);
  color: var(--dust);
}
.page-contact .ex-col--good .ex-quote{
  border-left-color: var(--mint);
  color: var(--star);
}
.page-contact .ex-note{
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--dust-dim);
}

/* ---------- 地址与备案 ---------- */
.page-contact .addr-banner{
  position: relative;
  border: 1px solid var(--line-soft);
  overflow: hidden;
  margin-bottom: clamp(18px,3vw,28px);
  background:
    linear-gradient(180deg, transparent 40%, rgba(7,9,14,.72) 100%),
    var(--ink-800);
}
.page-contact .addr-banner img{
  display: block;
  width: 100%;
  height: auto;
  max-height: 280px;
  object-fit: cover;
  opacity: .9;
}
.page-contact .addr-grid{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  border-top: 1px solid var(--line);
}
.page-contact .addr-row{
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .addr-key{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--dust-dim);
}
.page-contact .addr-val{
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--star);
  overflow-wrap: anywhere;
}
.page-contact .addr-foot{
  display: grid;
  gap: 16px;
  margin-top: clamp(18px,2.6vw,26px);
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}
.page-contact .addr-note{
  margin: 0;
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--dust);
}
.page-contact .addr-links{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px){
  .page-contact .prep-grid{ grid-template-columns: minmax(0,7fr) minmax(0,5fr); align-items: start; }
  .page-contact .ex-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .page-contact .addr-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .page-contact .addr-row{ padding: 14px 18px 14px 0; }
  .page-contact .addr-row:nth-child(odd){
    border-right: 1px solid var(--line-soft);
    padding-right: 18px;
  }
  .page-contact .addr-foot{
    grid-template-columns: minmax(0,1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px){
  .page-contact .contact-hero__in{
    grid-template-columns: minmax(0,1fr) 250px;
    align-items: start;
  }
  .page-contact .contact-hero__rail{
    border-top: 0;
    border-left: 1px solid var(--line-soft);
    padding-left: 22px;
  }
  .page-contact .flow-wrap{
    grid-template-columns: minmax(0,1fr) 300px;
    align-items: start;
  }
  .page-contact .quick{ position: sticky; top: var(--pc-top); }
}

@media (min-width: 1000px){
  .page-contact .channel{
    grid-template-columns: 44px 190px minmax(0,1fr) 128px;
    grid-template-areas:
      "idx name val act"
      "idx for  for act";
    align-items: center;
    gap: 6px 18px;
    padding: 22px 0;
  }
  .page-contact .channel__act{ margin-top: 0; }
  .page-contact .channel__act .btn{ width: auto; }
  .page-contact .channel__for{ padding-right: 10px; }
  .page-contact .flow__body p{ font-size: 14.5px; }
}
<<<END>>>