.page-contact{
  --pc-line-soft: rgba(34,58,110,.55);
  --pc-aside: 400px;
  position: relative;
  background: var(--c-void);
  color: var(--c-white);
  font-family: var(--font-sans);
  line-height: 1.7;
  overflow-x: clip;
}

.page-contact *,
.page-contact *::before,
.page-contact *::after{ box-sizing: border-box; }

.page-contact [id]{ scroll-margin-top: calc(var(--header-h) + 18px); }

/* ---------- 首屏 ---------- */
.page-contact .contact-hero{
  position: relative;
  padding: calc(var(--header-h) + 26px) 0 46px;
  background-color: var(--c-void);
  background-image:
    radial-gradient(115% 78% at 86% -12%, rgba(255,122,41,.20), rgba(255,122,41,0) 62%),
    radial-gradient(85% 58% at 4% 108%, rgba(76,224,138,.13), rgba(76,224,138,0) 60%),
    linear-gradient(rgba(34,58,110,.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34,58,110,.22) 1px, transparent 1px);
  background-size: auto, auto, 56px 56px, 56px 56px;
}

.page-contact .contact-hero::after{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-orange) 0%, var(--c-orange-2) 42%, var(--c-green) 100%);
  transform: skewY(-.35deg);
  transform-origin: left bottom;
}

.page-contact .contact-hero__grid{
  display: grid;
  gap: 30px;
  align-items: center;
}

.page-contact .contact-hero h1{
  margin: 10px 0 14px;
  font-size: clamp(38px, 8.4vw, 78px);
  font-weight: 900;
  line-height: .98;
  letter-spacing: -.035em;
}

.page-contact .contact-hero__lead{
  max-width: 44ch;
  margin: 0 0 24px;
  font-size: 16px;
  color: var(--c-mute);
}

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

.page-contact .contact-hero__media{
  position: relative;
  margin: 0;
  border: 1px solid var(--c-line);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-contact .contact-hero__media img{
  display: block;
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
  filter: saturate(.85) contrast(1.06);
}

/* ---------- 主体分栏 ---------- */
.page-contact .contact-body{
  display: grid;
  gap: 34px;
  padding: 6px 0 76px;
}

.page-contact .contact-body__main{ min-width: 0; }

/* ---------- 章节抬头 ---------- */
.page-contact .contact-sec{
  padding: 34px 0;
  border-top: 1px solid var(--pc-line-soft);
}

.page-contact .contact-sec:first-child{
  border-top: 0;
  padding-top: 10px;
}

.page-contact .contact-head__title{
  margin: 8px 0 10px;
  font-size: clamp(23px, 3.2vw, 33px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.02em;
}

.page-contact .contact-head__note{
  margin: 0;
  max-width: 56ch;
  font-size: 14.5px;
  color: var(--c-mute);
}

/* ---------- 三条入口 ---------- */
.page-contact .path-list{
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-contact .path-item{
  position: relative;
  padding: 18px 0 18px 26px;
  border-bottom: 1px dashed var(--pc-line-soft);
}

.page-contact .path-item:last-child{ border-bottom: 0; }

.page-contact .path-item::before{
  content: "";
  position: absolute;
  left: 1px;
  top: 26px;
  width: 9px;
  height: 9px;
  background: var(--c-orange);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-contact .path-item:nth-child(2)::before{ background: var(--c-green); }
.page-contact .path-item:nth-child(3)::before{ background: var(--c-orange-2); }

.page-contact .path-item__tag{
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-mute);
}

.page-contact .path-item__title{
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-contact .path-item__desc{
  margin: 0 0 10px;
  max-width: 60ch;
  font-size: 15px;
  color: var(--c-mute);
}

.page-contact .path-item__meta{
  margin: 0;
  padding-left: 10px;
  border-left: 2px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: rgba(244,247,255,.82);
  font-variant-numeric: tabular-nums;
}

/* ---------- 联系方式 ---------- */
.page-contact .chan-grid{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 1px;
  margin-top: 22px;
  background: var(--pc-line-soft);
  border: 1px solid var(--pc-line-soft);
}

.page-contact .chan-card{
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 20px 18px;
  background: var(--c-panel);
}

.page-contact .chan-card__key{
  margin: 0;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--c-mute);
}

.page-contact .chan-card__val{
  margin: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.5;
  color: var(--c-white);
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-contact .chan-card__val--text{
  font-family: var(--font-sans);
  font-size: 15px;
  letter-spacing: 0;
}

.page-contact .copy-btn{
  align-self: flex-start;
  margin-top: 2px;
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-mute);
  background: transparent;
  border: 1px solid var(--c-line);
  cursor: pointer;
  clip-path: polygon(7px 0, 100% 0, 100% 100%, 0 100%, 0 7px);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible{
  color: var(--c-orange);
  border-color: var(--c-orange);
  background: rgba(255,122,41,.08);
  outline: none;
}

.page-contact .contact-note{
  margin: 18px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--c-green);
  font-size: 13.5px;
  color: var(--c-mute);
  max-width: 62ch;
}

/* ---------- 反馈三步 ---------- */
.page-contact .step-list{
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .step{
  position: relative;
  padding: 22px 18px 20px;
  background: var(--c-panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-contact .step::before{
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: 0;
  height: 2px;
  background: var(--c-orange);
}

.page-contact .step:nth-child(2)::before{ background: var(--c-orange-2); }
.page-contact .step:nth-child(3)::before{ background: var(--c-green); }

.page-contact .step__num{
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: rgba(244,247,255,.22);
  font-variant-numeric: tabular-nums;
}

.page-contact .step__title{
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
}

.page-contact .step__desc{
  margin: 0;
  font-size: 14.5px;
  color: var(--c-mute);
}

.page-contact .flow-figure{
  margin: 22px 0 0;
  border: 1px solid var(--pc-line-soft);
  overflow: hidden;
  clip-path: polygon(0 16px, 16px 0, 100% 0, 100% 100%, 0 100%);
}

.page-contact .flow-figure img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 合作共建 ---------- */
.page-contact .coop-grid{
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-contact .coop-card{
  padding: 20px 18px;
  background: linear-gradient(180deg, rgba(18,34,74,.92), rgba(10,22,51,.92));
  border: 1px solid var(--c-line);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-contact .coop-card__tag{
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-orange);
}

.page-contact .coop-card h3{
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
}

.page-contact .coop-card p{
  margin: 0;
  font-size: 14.5px;
  color: var(--c-mute);
}

.page-contact .coop-prep{
  margin-top: 24px;
  padding: 20px 18px;
  background: rgba(76,224,138,.06);
  border-left: 3px solid var(--c-green);
}

.page-contact .coop-prep h3{
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 700;
}

.page-contact .coop-prep ul{
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-contact .coop-prep li{
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  color: var(--c-mute);
}

.page-contact .coop-prep li::before{
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 1px;
  background: var(--c-green);
}

/* ---------- 提交之后 ---------- */
.page-contact .follow-list{
  margin: 22px 0 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--pc-line-soft);
}

.page-contact .follow-item{
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--pc-line-soft);
}

.page-contact .follow-item dt{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-orange);
}

.page-contact .follow-item dd{
  margin: 0;
  font-size: 15px;
  color: var(--c-mute);
}

/* ---------- 留言区 ---------- */
.page-contact .contact-body__aside{ min-width: 0; }

.page-contact .msg-form{
  padding: 26px 20px 22px;
  background: var(--c-ink);
  border: 1px solid var(--c-line);
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.page-contact .msg-form__title{
  margin: 8px 0 6px;
  font-size: clamp(21px, 3vw, 26px);
  font-weight: 800;
  letter-spacing: -.02em;
}

.page-contact .msg-form__note{
  margin: 0 0 20px;
  font-size: 13.5px;
  color: var(--c-mute);
}

.page-contact .field{ margin-bottom: 16px; }

.page-contact .field__label{
  display: block;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-mute);
  transform-origin: left center;
  transition: color .2s var(--ease), transform .2s var(--ease);
}

.page-contact .field__control{
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 15px;
  line-height: 1.5;
  color: var(--c-white);
  background: var(--c-void);
  border: 1px solid var(--c-line);
  border-radius: 0;
  clip-path: polygon(9px 0, 100% 0, 100% 100%, 0 100%, 0 9px);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-contact input.field__control,
.page-contact textarea.field__control{
  -webkit-appearance: none;
  appearance: none;
}

.page-contact .field__control::placeholder{ color: rgba(154,169,201,.65); }

.page-contact .field__control:focus{
  outline: none;
  border-color: var(--c-orange);
  background-color: rgba(255,122,41,.05);
}

.page-contact .field:focus-within .field__label{
  color: var(--c-orange);
  transform: translateY(-2px);
}

.page-contact .field__control--area{
  min-height: 122px;
  resize: vertical;
}

.page-contact .field__hint{
  margin: 7px 0 0;
  font-size: 12px;
  color: rgba(154,169,201,.85);
}

.page-contact .field--check{
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 18px;
}

.page-contact .field--check input{
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: var(--c-orange);
}

.page-contact .field--check label{
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-mute);
}

.page-contact .field--check a{
  color: var(--c-orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .msg-form .btn{
  width: 100%;
  min-height: 48px;
  font-size: 15px;
  letter-spacing: .04em;
}

.page-contact .msg-form__foot{
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--c-mute);
  font-variant-numeric: tabular-nums;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px){
  .page-contact .chan-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (min-width: 720px){
  .page-contact .coop-grid{ grid-template-columns: repeat(3, minmax(0,1fr)); }
  .page-contact .follow-item{
    grid-template-columns: 168px minmax(0,1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 768px){
  .page-contact .step-list{ grid-template-columns: repeat(3, minmax(0,1fr)); }
  .page-contact .contact-sec{ padding: 40px 0; }
  .page-contact .msg-form{ padding: 30px 26px 26px; }
}

/* ---------- 桌面分栏 ---------- */
@media (min-width: 960px){
  .page-contact .contact-hero{ padding: calc(var(--header-h) + 44px) 0 62px; }
  .page-contact .contact-hero__grid{
    grid-template-columns: minmax(0,1.08fr) minmax(0,.92fr);
    gap: 54px;
  }
}

@media (min-width: 1120px){
  .page-contact .contact-body{
    grid-template-columns: minmax(0,1fr) var(--pc-aside);
    gap: 48px;
    align-items: start;
  }
  .page-contact .contact-body__aside{
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}

@media (prefers-reduced-motion: reduce){
  .page-contact .field__label,
  .page-contact .field__control,
  .page-contact .copy-btn{ transition: none; }
  .page-contact .field:focus-within .field__label{ transform: none; }
}