.page-contact{
  --ct-card-bg: linear-gradient(165deg, rgba(22,35,74,.95), rgba(11,27,58,.92));
  --ct-glow: 0 26px 60px -32px rgba(108,92,231,.62);
  display: block;
}

.page-contact .ct-topline{ padding-block: 14px 0; }
.page-contact .ct-topline__inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

/* 首屏 */
.page-contact .ct-hero{
  position: relative;
  overflow: hidden;
  margin-top: 16px;
  padding-block: clamp(28px, 5vw, 56px) clamp(38px, 6vw, 72px);
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(108,92,231,.3), transparent 62%),
    radial-gradient(80% 70% at 2% 98%, rgba(0,210,198,.16), transparent 60%),
    linear-gradient(118deg, var(--void) 0%, var(--deep) 54%, var(--orbit) 100%);
  border-block: var(--line);
}
.page-contact .ct-hero__inner{
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}
.page-contact .ct-hero__title{
  margin: 14px 0 0;
  font-size: clamp(34px, 6.6vw, 62px);
  line-height: 1.1;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--moon);
}
.page-contact .ct-hero__lede{
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}
.page-contact .ct-hero__meta{
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-contact .ct-hero__meta li{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border-radius: 999px;
  border: var(--line);
  background: rgba(11,27,58,.62);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--moon);
}
.page-contact .ct-hero__meta-k{ color: var(--aurora); }
.page-contact .ct-hero__media{
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: var(--line-strong);
  box-shadow: var(--shadow);
  background: linear-gradient(150deg, rgba(22,35,74,.9), rgba(6,59,69,.6));
}
.page-contact .ct-hero__media img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 章节标题 */
.page-contact .ct-head{
  max-width: 64ch;
  margin-bottom: clamp(22px, 3.4vw, 38px);
}
.page-contact .ct-head__title{
  margin: 10px 0 0;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.24;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--moon);
}
.page-contact .ct-head__sub{
  margin: 13px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* 三条路径 */
.page-contact .ct-cards{
  display: grid;
  gap: 16px;
}
.page-contact .ct-card{
  position: relative;
  overflow: hidden;
  padding: 26px 22px 22px 28px;
  border-radius: var(--r-lg);
  border: var(--line);
  background: var(--ct-card-bg);
  box-shadow: var(--shadow);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .ct-card::before{
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--nebula);
}
.page-contact .ct-card--phone::before{ background: var(--aurora); }
.page-contact .ct-card--addr::before{ background: var(--ember); }
.page-contact .ct-card:hover{
  transform: translateY(-2px);
  border-color: rgba(180,168,255,.42);
  box-shadow: var(--ct-glow);
}
.page-contact .ct-card__tag{
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-contact .ct-card__value{
  margin: 14px 0 0;
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(17px, 2.4vw, 22px);
  line-height: 1.45;
  color: var(--moon);
  overflow-wrap: anywhere;
}
.page-contact .ct-card__value--mail{
  font-size: clamp(18px, 3.2vw, 30px);
  color: var(--lilac);
}
.page-contact .ct-card__value--addr{
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.6;
}
.page-contact .ct-card__note{
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}
.page-contact .ct-card__actions{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: var(--line);
}
.page-contact .ct-card__hint{
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--mist);
}
.page-contact .ct-copy{
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .12em;
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255,138,61,.62);
  background: rgba(255,138,61,.13);
  color: var(--ember);
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .ct-copy:hover{ background: rgba(255,138,61,.24); }
.page-contact .ct-copy:focus-visible{
  outline: 2px solid var(--lilac);
  outline-offset: 2px;
}
.page-contact .ct-copy[data-done]{
  color: var(--aurora);
  border-color: rgba(0,210,198,.6);
  background: rgba(0,210,198,.13);
}

/* 问题类型切换 */
.page-contact .ct-switch{ position: relative; }
.page-contact .ct-switch__input{
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-contact .ct-switch__bar{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  border-radius: var(--r-sm);
}
.page-contact .ct-switch__input:focus-visible ~ .ct-switch__bar{
  outline: 2px solid var(--lilac);
  outline-offset: 4px;
}
.page-contact .ct-switch__label{
  cursor: pointer;
  padding: 9px 17px;
  border-radius: 999px;
  border: var(--line);
  background: rgba(22,35,74,.55);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .ct-switch__label:hover{ border-color: rgba(180,168,255,.4); color: var(--moon); }
.page-contact .ct-switch__input:nth-of-type(1):checked ~ .ct-switch__bar .ct-switch__label:nth-child(1),
.page-contact .ct-switch__input:nth-of-type(2):checked ~ .ct-switch__bar .ct-switch__label:nth-child(2),
.page-contact .ct-switch__input:nth-of-type(3):checked ~ .ct-switch__bar .ct-switch__label:nth-child(3),
.page-contact .ct-switch__input:nth-of-type(4):checked ~ .ct-switch__bar .ct-switch__label:nth-child(4){
  background: var(--aurora);
  border-color: var(--aurora);
  color: var(--void);
  font-weight: 700;
}
.page-contact .ct-switch__panels > .ct-panel{ display: none; }
.page-contact .ct-switch__input:nth-of-type(1):checked ~ .ct-switch__panels > .ct-panel:nth-child(1),
.page-contact .ct-switch__input:nth-of-type(2):checked ~ .ct-switch__panels > .ct-panel:nth-child(2),
.page-contact .ct-switch__input:nth-of-type(3):checked ~ .ct-switch__panels > .ct-panel:nth-child(3),
.page-contact .ct-switch__input:nth-of-type(4):checked ~ .ct-switch__panels > .ct-panel:nth-child(4){
  display: grid;
}
.page-contact .ct-panel{
  gap: 20px;
  padding: 22px;
  border-radius: var(--r-md);
  border: var(--line);
  background: rgba(11,27,58,.72);
}
.page-contact .ct-panel__label{
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-contact .ct-panel__value{
  margin: 10px 0 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--moon);
}
.page-contact .ct-panel__tip{
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}
.page-contact .ct-panel__list{
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}
.page-contact .ct-panel__list li{
  position: relative;
  padding-left: 17px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--moon);
}
.page-contact .ct-panel__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--nebula);
}

/* 时间与回复 */
.page-contact .ct-band{
  display: grid;
  gap: 26px;
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--r-lg);
  border: var(--line);
  background:
    radial-gradient(90% 80% at 92% 0%, rgba(0,210,198,.16), transparent 60%),
    linear-gradient(150deg, var(--teal-deep) 0%, var(--deep) 78%);
}
.page-contact .ct-band__title{
  margin: 10px 0 0;
  font-size: clamp(23px, 3.2vw, 32px);
  line-height: 1.28;
  font-weight: 800;
  color: var(--moon);
}
.page-contact .ct-band__text{
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--mist);
}
.page-contact .ct-band__stats{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-contact .ct-band__stats li{
  padding-top: 16px;
  border-top: 2px solid rgba(0,210,198,.42);
}
.page-contact .ct-stat__num{
  display: block;
  font-family: var(--mono);
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--aurora);
  overflow-wrap: anywhere;
}
.page-contact .ct-stat__unit{
  display: block;
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--amber);
}
.page-contact .ct-stat__label{
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* 写信准备 */
.page-contact .ct-prep__inner{
  display: grid;
  gap: 24px;
}
.page-contact .ct-checklist{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-contact .ct-check{ position: relative; }
.page-contact .ct-check__input{
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-contact .ct-check__label{
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  border-radius: var(--r-md);
  border: var(--line);
  background: rgba(22,35,74,.5);
  cursor: pointer;
  transition: background .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .ct-check__label:hover{ border-color: rgba(180,168,255,.36); }
.page-contact .ct-check__input:focus-visible + .ct-check__label{
  outline: 2px solid var(--lilac);
  outline-offset: 2px;
}
.page-contact .ct-check__input:checked + .ct-check__label{
  background: rgba(0,210,198,.08);
  border-color: rgba(0,210,198,.42);
}
.page-contact .ct-check__box{
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border-radius: 6px;
  border: 1px solid rgba(180,168,255,.5);
  transition: background .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .ct-check__input:checked + .ct-check__label .ct-check__box{
  background: var(--aurora);
  border-color: var(--aurora);
}
.page-contact .ct-check__input:checked + .ct-check__label .ct-check__box::after{
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--void);
  border-bottom: 2px solid var(--void);
  transform: rotate(42deg);
}
.page-contact .ct-check__text{
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}
.page-contact .ct-check__text b{ color: var(--moon); font-weight: 700; }

/* 三类常来信 */
.page-contact .ct-ways__grid{
  display: grid;
  gap: 16px;
}
.page-contact .ct-way{
  padding: 24px 22px;
  border-radius: var(--r-md);
  border: var(--line);
  background: rgba(11,27,58,.62);
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.page-contact .ct-way:hover{
  transform: translateY(-2px);
  border-color: rgba(180,168,255,.36);
  box-shadow: var(--ct-glow);
}
.page-contact .ct-way__num{
  margin: 0;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
}
.page-contact .ct-way h3{
  margin: 12px 0 0;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--moon);
}
.page-contact .ct-way p{
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}
.page-contact .ct-way ul{
  list-style: none;
  margin: 15px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
  border-top: var(--line);
  padding-top: 15px;
}
.page-contact .ct-way li{
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}
.page-contact .ct-way li::before{
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--aurora);
}

/* 收尾 */
.page-contact .ct-end__inner{
  display: grid;
  gap: 26px;
  align-items: center;
}
.page-contact .ct-links{
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-contact .ct-links a{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 20px;
  border-radius: 999px;
  border: var(--line);
  background: rgba(22,35,74,.5);
  color: var(--moon);
  text-decoration: none;
  font-size: 14.5px;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.page-contact .ct-links a span{ color: var(--aurora); font-family: var(--mono); }
.page-contact .ct-links a:hover{
  background: rgba(0,210,198,.1);
  border-color: rgba(0,210,198,.5);
}
.page-contact .ct-links a:focus-visible{
  outline: 2px solid var(--lilac);
  outline-offset: 2px;
}
.page-contact .ct-end__media{
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: var(--line);
  background: linear-gradient(160deg, rgba(22,35,74,.85), rgba(6,59,69,.55));
}
.page-contact .ct-end__media img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 中等屏幕 */
@media (min-width: 680px){
  .page-contact .ct-cards{ grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
  .page-contact .ct-card--mail{ grid-column: 1 / -1; }
  .page-contact .ct-band__stats{ grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
  .page-contact .ct-ways__grid{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* 桌面 */
@media (min-width: 960px){
  .page-contact .ct-hero__inner{
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 48px;
  }
  .page-contact .ct-cards{
    grid-template-columns: 1.35fr 1fr 1fr;
    align-items: start;
    gap: 20px;
  }
  .page-contact .ct-card--mail{ grid-column: auto; }
  .page-contact .ct-card--phone{ margin-top: 46px; }
  .page-contact .ct-card--addr{ margin-top: 92px; }
  .page-contact .ct-panel{ grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 28px; }
  .page-contact .ct-band{
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 44px;
    align-items: start;
  }
  .page-contact .ct-prep__inner{
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: 48px;
    align-items: start;
  }
  .page-contact .ct-ways__grid{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-contact .ct-end__inner{
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 48px;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-contact .ct-card,
  .page-contact .ct-way,
  .page-contact .ct-copy,
  .page-contact .ct-check__label,
  .page-contact .ct-links a{
    transition: none;
  }
  .page-contact .ct-card:hover,
  .page-contact .ct-way:hover{ transform: none; }
}