.page-contact{
  --c-rail: 352px;
  --c-gap: clamp(24px, 3.2vw, 48px);
  background: var(--ink);
  color: var(--frost);
}

/* ---------- 首屏 ---------- */
.page-contact .hero{
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 3.6vw, 52px) 0 clamp(44px, 5.5vw, 84px);
  border-bottom: 2px solid var(--line);
  background: var(--ink-2);
}

.page-contact .hero::before{
  content: "";
  position: absolute;
  top: -45%;
  right: -8%;
  width: min(640px, 74vw);
  height: 190%;
  background: var(--indigo);
  opacity: .2;
  transform: rotate(-16deg);
  pointer-events: none;
}

.page-contact .hero::after{
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: clamp(120px, 18vw, 260px);
  height: 4px;
  background: var(--cyan);
}

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

.page-contact .crumbs{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(24px, 3vw, 44px);
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-contact .crumbs li{
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-contact .crumbs li::after{
  content: "/";
  color: var(--mist);
  opacity: .6;
}

.page-contact .crumbs li:last-child::after{
  content: none;
}

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

.page-contact .crumbs a:hover{
  text-decoration: underline;
}

.page-contact .hero-grid{
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.page-contact .hero-copy{
  min-width: 0;
}

.page-contact .hero-copy h1{
  margin: .45em 0 0;
  font-size: clamp(2rem, 4.4vw, 3.375rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.012em;
  color: var(--frost);
}

.page-contact .hero-lead{
  margin: 20px 0 0;
  max-width: 38ch;
  font-size: clamp(1rem, 1.15vw, 1.125rem);
  line-height: 1.9;
  color: var(--silver);
}

.page-contact .hero-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-contact .hero-figure{
  margin: 0;
  border: 2px solid var(--line);
  background: var(--ink-3);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-contact .hero-figure img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .hero-stats{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(34px, 4.4vw, 62px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 2px solid var(--line);
}

.page-contact .hero-stats li{
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: var(--ink-2);
}

.page-contact .stat-num{
  font-size: clamp(1.375rem, 2vw, 1.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-contact .stat-label{
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--mist);
}

/* ---------- 通用区块标题 ---------- */
.page-contact .section-head{
  max-width: 820px;
}

.page-contact .section-head .section-title{
  margin: .35em 0 0;
  font-size: clamp(1.5rem, 2.6vw, 2.125rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--frost);
}

.page-contact .section-head .section-note{
  margin: 16px 0 0;
  max-width: 42ch;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--silver);
}

/* ---------- 双栏对置 ---------- */
.page-contact .contact-layout{
  display: grid;
  gap: var(--c-gap);
  margin-top: clamp(32px, 4vw, 56px);
}

.page-contact .contact-rail{
  display: grid;
  gap: 18px;
  align-content: start;
  min-width: 0;
}

.page-contact .contact-stream{
  display: grid;
  gap: clamp(40px, 4.6vw, 66px);
  min-width: 0;
}

/* ---------- 联系方式卡 ---------- */
.page-contact .reach-card{
  position: relative;
  padding: 22px 22px 20px 24px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  box-shadow: var(--shadow-mid);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-contact .reach-card::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cyan);
  opacity: .8;
}

.page-contact .reach-card--quiet::before{
  background: var(--neon);
}

.page-contact .reach-card:hover{
  border-color: var(--cyan);
  box-shadow: var(--shadow-lift);
}

.page-contact .reach-kind{
  margin: 0 0 10px;
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-contact .reach-value{
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .01em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .reach-value--sm{
  font-size: 1.0625rem;
}

.page-contact .reach-use{
  margin: 14px 0 0;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .reach-meta{
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-contact .reach-meta a{
  color: var(--cyan);
  text-decoration: none;
}

.page-contact .reach-meta a:hover{
  text-decoration: underline;
}

/* ---------- 右栏小标题 ---------- */
.page-contact .stream-block{
  padding-top: clamp(24px, 2.6vw, 34px);
  border-top: 1px solid var(--line);
}

.page-contact .stream-block:first-child{
  padding-top: 0;
  border-top: 0;
}

.page-contact .stream-head{
  max-width: 660px;
}

.page-contact .stream-title{
  margin: .4em 0 0;
  font-size: clamp(1.3125rem, 2vw, 1.625rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.005em;
  color: var(--frost);
}

/* ---------- 准备清单 ---------- */
.page-contact .prep-list{
  display: grid;
  gap: 14px;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .prep-item{
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px 18px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-contact .prep-item:hover{
  border-color: var(--cyan);
  box-shadow: var(--shadow-mid);
}

.page-contact .prep-idx{
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 2px solid var(--line-strong);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-contact .prep-body{
  min-width: 0;
}

.page-contact .prep-body h3{
  margin: 0 0 6px;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--frost);
}

.page-contact .prep-body p{
  margin: 0;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .prep-hint{
  margin: 18px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--wine);
  background: rgba(90, 31, 43, .24);
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .prep-hint a{
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-contact .prep-hint a:hover{
  color: var(--neon);
}

/* ---------- 响应时效 ---------- */
.page-contact .flow-list{
  position: relative;
  display: grid;
  gap: clamp(20px, 2.4vw, 28px);
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0 0 0 24px;
  list-style: none;
}

.page-contact .flow-list::before{
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--cyan);
  opacity: .38;
}

.page-contact .flow-item{
  position: relative;
  padding: 16px 18px 18px;
  border: 2px solid var(--line);
  background: var(--ink-2);
}

.page-contact .flow-item::before{
  content: "";
  position: absolute;
  left: -29px;
  top: 22px;
  width: 10px;
  height: 10px;
  background: var(--ink);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
}

.page-contact .flow-step{
  display: inline-block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-contact .flow-title{
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--frost);
}

.page-contact .flow-text{
  margin: 8px 0 0;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .flow-bar{
  display: block;
  position: relative;
  margin-top: 14px;
  height: 5px;
  background: rgba(198, 207, 219, .14);
  overflow: hidden;
}

.page-contact .flow-bar > i{
  display: block;
  height: 100%;
  width: 20%;
  background: var(--cyan);
}

.page-contact .flow-item:nth-child(1) .flow-bar > i{ width: 20%; }
.page-contact .flow-item:nth-child(2) .flow-bar > i{ width: 46%; }
.page-contact .flow-item:nth-child(3) .flow-bar > i{ width: 72%; }
.page-contact .flow-item:nth-child(4) .flow-bar > i{ width: 100%; }

/* ---------- 合作对接 ---------- */
.page-contact .partner-grid{
  display: grid;
  gap: 18px;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-contact .partner-card{
  display: flex;
  flex-direction: column;
  padding: 22px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-contact .partner-card:hover{
  border-color: var(--cyan);
  box-shadow: var(--shadow-mid);
}

.page-contact .partner-tag{
  align-self: flex-start;
  margin: 0 0 14px;
  padding: 5px 10px;
  border: 1px solid var(--line-strong);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-contact .partner-card h3{
  margin: 0 0 10px;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--frost);
}

.page-contact .partner-card p{
  margin: 0 0 12px;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .partner-card .partner-need{
  margin-bottom: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: .875rem;
  color: var(--mist);
}

.page-contact .partner-link{
  align-self: flex-start;
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .partner-link:hover{
  border-bottom-color: var(--cyan);
}

/* ---------- 页底窄带 ---------- */
.page-contact .contact-band{
  position: relative;
  margin-top: clamp(56px, 7vw, 100px);
  overflow: hidden;
  background: var(--wine);
  border-top: 2px solid var(--line);
  color: var(--frost);
}

.page-contact .contact-band::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: min(380px, 42%);
  background: rgba(10, 18, 36, .42);
  pointer-events: none;
}

.page-contact .band-grid{
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  padding: clamp(36px, 4.5vw, 64px) 0;
}

.page-contact .band-copy{
  min-width: 0;
}

.page-contact .band-title{
  margin: .4em 0 0;
  font-size: clamp(1.375rem, 2.2vw, 1.75rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--frost);
}

.page-contact .band-address{
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: clamp(1rem, 1.3vw, 1.125rem);
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--frost);
}

.page-contact .band-text{
  margin: 16px 0 0;
  max-width: 38ch;
  font-size: .9375rem;
  line-height: 1.9;
  color: rgba(243, 246, 250, .84);
}

.page-contact .band-legal{
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(243, 246, 250, .26);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: rgba(243, 246, 250, .74);
}

.page-contact .band-legal a{
  color: var(--frost);
  text-decoration: underline;
}

.page-contact .band-figure{
  margin: 0;
  border: 2px solid rgba(243, 246, 250, .3);
  overflow: hidden;
}

.page-contact .band-figure img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px){
  .page-contact .partner-grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px){
  .page-contact .hero-stats{
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px){
  .page-contact .hero-grid{
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }
}

@media (min-width: 1020px){
  .page-contact .contact-layout{
    grid-template-columns: var(--c-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .contact-rail{
    position: sticky;
    top: calc(var(--bar-h-min) + var(--index-h) + 28px);
  }
}

@media (min-width: 900px){
  .page-contact .band-grid{
    grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
    align-items: center;
  }
}

@media (max-width: 480px){
  .page-contact .prep-item{
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
    padding: 14px;
  }

  .page-contact .prep-idx{
    width: 38px;
    height: 38px;
    font-size: 13px;
  }

  .page-contact .flow-list{
    padding-left: 18px;
  }

  .page-contact .flow-item::before{
    left: -23px;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-contact .reach-card,
  .page-contact .prep-item,
  .page-contact .partner-card{
    transition: none;
  }
}