.page-contact{
  --co-pad: clamp(44px, 6vw, 88px);
  --co-gap: clamp(14px, 1.8vw, 22px);
  --co-muted: #9AA7B4;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}
.page-contact .co-wrap{
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.page-contact .co-sec{ padding-block: var(--co-pad); }
.page-contact .co-sec--dark{
  background-color: var(--ink);
  color: var(--paper);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
}
.page-contact .co-sec--paper{
  background: var(--paper);
  color: var(--ink);
  --co-muted: #5C6A76;
}

/* 面包屑 */
.page-contact .co-crumb{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--rock);
}
.page-contact .co-crumb a{
  color: var(--rock);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-block: 4px;
  transition: color var(--step), border-color var(--step);
}
.page-contact .co-crumb a:hover{
  color: var(--signal-soft);
  border-bottom-color: var(--signal-soft);
}
.page-contact .co-crumb__sep{ color: var(--line-strong); }
.page-contact .co-crumb [aria-current="page"]{ color: var(--paper); }

/* 首屏 */
.page-contact .co-hero{
  background: linear-gradient(155deg, var(--ink) 0%, var(--ink-2) 100%);
  border-bottom: 1px solid var(--line-strong);
  padding-block: clamp(24px, 3.4vw, 44px) clamp(32px, 4.4vw, 64px);
}
.page-contact .co-hero__grid{
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 34px);
}
.page-contact .co-kicker{
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--signal-soft);
}
.page-contact h1{
  margin: 0.3em 0 0.45em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 6vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.page-contact .co-lead{
  margin: 0 0 clamp(20px, 2.6vw, 28px);
  max-width: 34em;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.85;
}
.page-contact .co-hero__act{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-contact .co-hero__rail{
  border: 1px solid var(--line-strong);
  background: rgba(11, 26, 43, 0.55);
  padding: clamp(16px, 2vw, 22px);
  box-shadow: var(--paper-shadow);
}
.page-contact .co-rail__cap{
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--rock);
}
.page-contact .co-rail{
  display: block;
  width: 100%;
  max-width: 330px;
  height: auto;
}
.page-contact .co-rail .rail-line{
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1;
  stroke-dasharray: 4 6;
}
.page-contact .co-rail .rail-dot{ fill: var(--signal); }
.page-contact .co-rail .rail-no{
  fill: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}
.page-contact .co-rail .rail-t{
  fill: var(--paper);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
}
.page-contact .co-rail .rail-s{
  fill: var(--rock);
  font-family: var(--font-ui);
  font-size: 11px;
}

/* 章节头 */
.page-contact .co-head{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 14px;
  align-items: start;
  margin-bottom: clamp(18px, 2.4vw, 30px);
}
.page-contact .co-head__no{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--signal);
  border: 1px solid var(--signal);
  padding: 2px 7px;
  line-height: 1.6;
}
.page-contact .co-head h2{
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.page-contact .co-head__note{
  margin: 8px 0 0;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.75;
  color: var(--co-muted);
}

/* 三类事项卡 */
.page-contact .co-cards{
  display: grid;
  gap: var(--co-gap);
}
.page-contact .co-cards > *{ min-width: 0; }
.page-contact .co-card{
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--signal);
  padding: clamp(16px, 2.2vw, 26px);
  box-shadow: var(--paper-shadow);
  transition: transform var(--step), box-shadow var(--step), border-color var(--step);
}
.page-contact .co-card--mid{ border-top-color: var(--sage); }
.page-contact .co-card--slim{ border-top-color: var(--clay); }
.page-contact .co-card:hover{
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: 0 1px 0 rgba(232, 228, 216, 0.2), 0 22px 36px -24px rgba(0, 0, 0, 0.85);
}
.page-contact .co-card__top{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}
.page-contact .co-card__no{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--rock);
  border: 1px solid var(--line-strong);
  padding: 1px 6px;
}
.page-contact .co-card h3{
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.35;
  color: var(--paper);
}
.page-contact .co-card__txt{
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.8);
}
.page-contact .co-tag{
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border: 1px solid currentColor;
  white-space: nowrap;
}
.page-contact .co-tag--signal{ color: var(--signal-soft); }
.page-contact .co-tag--sage{ color: var(--sage); }
.page-contact .co-tag--clay{ color: var(--clay); }

/* 展开清单 */
.page-contact .co-more{
  margin-top: 14px;
  border-top: 1px solid var(--line);
  padding-top: 8px;
}
.page-contact .co-more summary{
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 40px;
  padding: 4px 0;
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--signal-soft);
  transition: color var(--step);
}
.page-contact .co-more summary::-webkit-details-marker{ display: none; }
.page-contact .co-more summary:hover{ color: var(--signal); }
.page-contact .co-more__ic{
  position: relative;
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
}
.page-contact .co-more__ic::before,
.page-contact .co-more__ic::after{
  content: "";
  position: absolute;
  background: var(--signal);
  border-radius: 1px;
}
.page-contact .co-more__ic::before{ left: 0; top: 6px; width: 14px; height: 2px; }
.page-contact .co-more__ic::after{
  left: 6px; top: 0; width: 2px; height: 14px;
  transition: opacity var(--step), transform var(--step);
}
.page-contact .co-more[open] .co-more__ic::after{
  opacity: 0;
  transform: scaleY(0.2);
}
.page-contact .co-more__list{
  margin: 6px 0 4px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.page-contact .co-more__list li{
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--co-muted);
}
.page-contact .co-more__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 1px;
  background: var(--sage);
}

/* 图 */
.page-contact .co-fig{
  margin: clamp(20px, 3vw, 34px) 0 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
}
.page-contact .co-fig__img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-contact .co-fig__cap{
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-ui);
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

/* 联系渠道 */
.page-contact .co-chan{ border-top: 1px solid var(--line); }
.page-contact .co-chan__grid{
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}
.page-contact .co-chan__main > *{ min-width: 0; }
.page-contact .co-line{
  background: var(--ink-2);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--signal);
  padding: clamp(16px, 2vw, 22px);
  margin-bottom: var(--co-gap);
}
.page-contact .co-line--phone{ border-left-color: var(--sage); }
.page-contact .co-line__label{
  margin: 0 0 8px;
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock);
}
.page-contact .co-line__val{
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.6vw, 27px);
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--paper);
  overflow-wrap: anywhere;
  word-break: break-word;
}
.page-contact .co-copy{
  font-family: var(--font-ui);
  font-size: 13px;
  min-height: 38px;
  padding: 7px 15px;
  border: 1px solid var(--signal-soft);
  border-radius: 2px;
  background: transparent;
  color: var(--signal-soft);
  cursor: pointer;
  transition: background var(--step), color var(--step), border-color var(--step);
}
.page-contact .co-copy:hover{
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink);
}
.page-contact .co-copy[data-copied]{
  background: var(--moss);
  border-color: var(--moss);
  color: var(--paper);
}
.page-contact .co-copy--light{
  border-color: var(--signal);
  color: var(--signal);
}
.page-contact .co-copy--light:hover{
  background: var(--signal);
  color: var(--ink);
}
.page-contact .co-chan__note{
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--co-muted);
}
.page-contact .co-addr{
  position: relative;
  padding: clamp(16px, 2vw, 22px);
  margin-bottom: var(--co-gap);
  background-color: var(--ink-2);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 26px 26px;
  border: 1px solid var(--line-strong);
}
.page-contact .co-addr__label{
  margin: 0 0 8px;
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--clay);
}
.page-contact .co-addr__val{
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
  overflow-wrap: anywhere;
}
.page-contact .co-addr__note{
  margin: 0;
  font-family: var(--font-ui);
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}
.page-contact .co-hours{
  padding: clamp(14px, 1.8vw, 20px);
  border: 1px dashed var(--line-strong);
  margin-bottom: var(--co-gap);
}
.page-contact .co-hours__t{
  margin: 0 0 6px;
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock);
}
.page-contact .co-hours__v{
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2vw, 20px);
  color: var(--signal-soft);
  letter-spacing: 0.02em;
}
.page-contact .co-hours__note{
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--co-muted);
}
.page-contact .co-map{
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
}
.page-contact .co-map__img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-contact .co-map__cap{
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-ui);
  font-size: 12px;
  line-height: 1.6;
  color: var(--rock);
}

/* 一次写全 */
.page-contact .co-draft__grid{
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}
.page-contact .co-keys{
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
  border-top: 1px solid var(--ink-line);
}
.page-contact .co-keys li{
  padding-top: 14px;
  border-bottom: 1px solid var(--ink-line);
  padding-bottom: 14px;
  font-size: 15px;
  line-height: 1.85;
  color: #2A3A47;
}
.page-contact .co-keys strong{
  display: inline-block;
  margin-right: 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--sheet);
  border: 1px solid var(--clay);
  padding: 2px 8px;
}
.page-contact .co-draft{
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink-line);
  padding: clamp(18px, 2.4vw, 28px);
  box-shadow: var(--paper-shadow);
}
.page-contact .co-draft__cap{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--signal-soft);
}
.page-contact .co-draft__body{
  margin: 0 0 16px;
  padding: 14px 16px;
  background: var(--ink-2);
  border-left: 2px solid var(--signal);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.95;
  color: var(--paper);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.page-contact .co-draft__hint{
  margin: 12px 0 0;
  font-family: var(--font-ui);
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

/* 受理节奏 */
.page-contact .co-steps{
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}
.page-contact .co-steps li{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 26px);
  padding-block: clamp(16px, 2.2vw, 26px);
  border-bottom: 1px solid var(--line);
}
.page-contact .co-steps__no{
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--signal);
  padding-top: 3px;
}
.page-contact .co-steps h3{
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 20px);
  color: var(--paper);
}
.page-contact .co-steps p{
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--co-muted);
}

/* 合作方式 */
.page-contact .co-coop{
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--co-gap);
}
.page-contact .co-coop__item{
  background: var(--sheet);
  border: 1px solid var(--ink-line);
  border-top: 2px solid var(--ink);
  padding: clamp(16px, 2vw, 24px);
  transition: transform var(--step), box-shadow var(--step);
}
.page-contact .co-coop__item:hover{
  transform: translateY(-2px);
  box-shadow: 0 18px 30px -24px rgba(11, 26, 43, 0.9);
}
.page-contact .co-coop__item .co-tag--signal{ color: #C24A11; }
.page-contact .co-coop__item .co-tag--sage{ color: var(--moss); }
.page-contact .co-coop__item .co-tag--clay{ color: #9A6547; }
.page-contact .co-coop__item h3{
  margin: 12px 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.35;
  color: var(--ink);
}
.page-contact .co-coop__item p{
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: #2A3A47;
}
.page-contact .co-coop__out{
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--ink-line);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink);
}
.page-contact .co-coop__out span{
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--paper);
  background: var(--moss);
  padding: 2px 7px;
}

/* 相关入口 */
.page-contact .co-links{
  display: grid;
  gap: var(--co-gap);
}
.page-contact .co-link{
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line-strong);
  background: rgba(18, 41, 63, 0.6);
  text-decoration: none;
  color: var(--paper);
  transition: transform var(--step), border-color var(--step), background var(--step);
}
.page-contact .co-link:hover{
  transform: translateY(-2px);
  border-left-color: var(--signal);
  background: var(--ink-2);
}
.page-contact .co-link span{
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--signal-soft);
}
.page-contact .co-link strong{
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  color: var(--paper);
}
.page-contact .co-link em{
  font-style: normal;
  font-family: var(--font-ui);
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

/* 焦点 */
.page-contact a:focus-visible,
.page-contact button:focus-visible,
.page-contact summary:focus-visible{
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* 响应式 */
@media (min-width: 640px){
  .page-contact .co-links{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-contact .co-keys{ grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 26px; }
}
@media (min-width: 860px){
  .page-contact .co-hero__grid{
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }
  .page-contact .co-cards{ grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .page-contact .co-card--wide{ grid-column: span 5; }
  .page-contact .co-card--mid{ grid-column: span 4; }
  .page-contact .co-card--slim{ grid-column: span 3; }
  .page-contact .co-coop{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 900px){
  .page-contact .co-chan__grid{ grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
  .page-contact .co-draft__grid{ grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); align-items: start; }
}
@media (min-width: 1100px){
  .page-contact .co-links{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce){
  .page-contact *{
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .page-contact .co-card:hover,
  .page-contact .co-link:hover,
  .page-contact .co-coop__item:hover{ transform: none; }
}
<<<END>>>