.page-contact {
  --pc-line: rgba(31, 107, 79, .45);
  --pc-glass-line: rgba(255, 255, 255, .16);
  --pc-hair: rgba(11, 12, 14, .14);
  background: var(--c-night);
  color: var(--c-text);
  font-family: var(--f-body);
}

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

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  padding: clamp(1.6rem, 4vw, 2.4rem) 0 .5rem;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-text-dim);
}
.page-contact .crumbs__item { color: inherit; text-decoration: none; }
.page-contact a.crumbs__item:hover,
.page-contact a.crumbs__item:focus-visible { color: var(--c-volt); }
.page-contact .crumbs__item + .crumbs__item::before {
  content: "·";
  margin-right: .5rem;
  color: var(--c-line);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  padding: clamp(.8rem, 2.4vw, 1.6rem) 0 clamp(2.6rem, 6vw, 4.6rem);
  background: var(--c-night);
}
.page-contact .pc-hero__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--pc-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--pc-line) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(120% 85% at 18% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(120% 85% at 18% 0%, #000 0%, transparent 78%);
  opacity: .75;
}
.page-contact .pc-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: end;
}
.page-contact .pc-hero__title {
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(2.3rem, 6.4vw, 5rem);
  line-height: .98;
  letter-spacing: -.015em;
  margin: .7rem 0 1.1rem;
}
.page-contact .pc-hero__title em {
  display: block;
  font-style: normal;
  color: var(--c-volt);
}
.page-contact .pc-hero__sub {
  margin: 0;
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text-dim);
}
.page-contact .pc-index {
  list-style: none;
  margin: 0;
  padding: clamp(.85rem, 2.2vw, 1.2rem);
  display: grid;
  gap: 0;
  background: var(--c-glass);
  border: 1px solid var(--pc-glass-line);
  -webkit-backdrop-filter: blur(9px);
  backdrop-filter: blur(9px);
}
.page-contact .pc-index__link {
  display: flex;
  align-items: baseline;
  gap: .85rem;
  padding: .72rem .25rem;
  color: var(--c-text);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, .09);
  transition: color .2s ease, transform .2s ease;
}
.page-contact .pc-index li:last-child .pc-index__link { border-bottom: 0; }
.page-contact .pc-index__link:hover,
.page-contact .pc-index__link:focus-visible {
  color: var(--c-volt);
  transform: translateX(4px);
}
.page-contact .pc-index__no {
  flex: none;
  font-family: var(--f-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--c-volt);
}
.page-contact .pc-index__label { font-size: .95rem; line-height: 1.5; }

/* ---------- 通道条 ---------- */
.page-contact .pc-lanes {
  position: relative;
  background: var(--c-night-2);
  padding: clamp(2.2rem, 5.5vw, 3.6rem) 0 clamp(2.6rem, 6vw, 4.2rem);
  -webkit-clip-path: polygon(0 2.2vw, 100% 0, 100% calc(100% - 2.2vw), 0 100%);
  clip-path: polygon(0 2.2vw, 100% 0, 100% calc(100% - 2.2vw), 0 100%);
}
.page-contact .pc-lanes__head {
  display: grid;
  gap: .55rem;
  margin-bottom: clamp(1.4rem, 3vw, 2.2rem);
}
.page-contact .pc-lanes__title {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--step-2);
  line-height: 1.06;
}
.page-contact .pc-lanes__note {
  margin: 0;
  max-width: 42ch;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--c-text-dim);
}
.page-contact .lane-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(31, 107, 79, .6);
  border: 1px solid rgba(31, 107, 79, .6);
}
.page-contact .lane {
  position: relative;
  display: grid;
  gap: .55rem;
  padding: clamp(1.3rem, 3vw, 2.2rem) clamp(1.1rem, 2.6vw, 1.8rem);
  background: var(--c-night-2);
  color: var(--c-text);
  text-decoration: none;
  border-top: 3px solid var(--c-grey);
  transition: background .25s ease, transform .25s ease;
}
.page-contact .lane--stop { border-top-color: var(--c-stop); }
.page-contact .lane--volt { border-top-color: var(--c-volt); }
.page-contact .lane--paper { border-top-color: var(--c-paper); }
.page-contact .lane:hover,
.page-contact .lane:focus-visible {
  background: #0a2b21;
  transform: translateY(-3px);
}
.page-contact .lane__no {
  font-family: var(--f-mono);
  font-size: clamp(1.9rem, 4.6vw, 3rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--c-volt);
}
.page-contact .lane__name {
  font-family: var(--f-display);
  font-size: clamp(1.12rem, 2vw, 1.42rem);
  font-weight: 500;
  line-height: 1.2;
}
.page-contact .lane__desc {
  font-size: .9rem;
  line-height: 1.7;
  color: var(--c-text-dim);
}

/* ---------- 主体网格 ---------- */
.page-contact .pc-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
  padding: clamp(2.4rem, 6vw, 4rem) 0 clamp(2rem, 5vw, 3rem);
}
.page-contact .pc-body__main {
  display: grid;
  gap: clamp(1.6rem, 3.4vw, 2.6rem);
  min-width: 0;
}
.page-contact .pc-body__side { min-width: 0; }

/* ---------- 通道详情 ---------- */
.page-contact .channel {
  position: relative;
  background: var(--c-paper);
  color: var(--c-ink);
  padding: clamp(1.4rem, 3.6vw, 2.6rem);
  border-radius: var(--radius);
  scroll-margin-top: 96px;
}
.page-contact .channel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .6rem 1rem;
  padding-bottom: .9rem;
  margin-bottom: 1.2rem;
  border-bottom: 1px solid var(--pc-hair);
}
.page-contact .channel__no {
  font-family: var(--f-mono);
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--c-stop);
}
.page-contact .channel__title {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  line-height: 1.15;
  color: var(--c-ink);
}
.page-contact .channel__text {
  margin: 0 0 1.2rem;
  max-width: 58ch;
  font-size: .97rem;
  line-height: 1.82;
  color: var(--c-ink-dim);
}
.page-contact .channel__text:last-child { margin-bottom: 0; }
.page-contact .channel__kicker {
  margin: 0 0 .8rem;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-ink);
}

/* 勘误清单 */
.page-contact .req-list {
  list-style: none;
  margin: 0 0 1.6rem;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--pc-hair);
  border: 1px solid var(--pc-hair);
}
.page-contact .req-item {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  align-items: baseline;
  gap: .2rem .9rem;
  padding: .9rem 1rem;
  background: var(--c-paper);
}
.page-contact .req-item__no {
  grid-row: 1 / span 2;
  font-family: var(--f-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--c-stop);
}
.page-contact .req-item__name {
  font-size: .97rem;
  font-weight: 600;
  color: var(--c-ink);
}
.page-contact .req-item__desc {
  font-size: .87rem;
  line-height: 1.72;
  color: var(--c-ink-dim);
}

/* 转载三条 */
.page-contact .rule-list {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}
.page-contact .rule-item {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  align-items: start;
  gap: .9rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid rgba(11, 12, 14, .1);
}
.page-contact .rule-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-contact .rule-item__no {
  padding-top: .22rem;
  font-family: var(--f-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--c-line);
}
.page-contact .rule-item__name {
  margin: 0 0 .25rem;
  font-size: .97rem;
  font-weight: 600;
  color: var(--c-ink);
}
.page-contact .rule-item__desc {
  margin: 0;
  font-size: .87rem;
  line-height: 1.75;
  color: var(--c-ink-dim);
}

/* 合作三个方向 */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.2rem;
  margin: 0 0 1.5rem;
}
.page-contact .coop {
  padding-top: .85rem;
  border-top: 2px solid var(--c-line);
}
.page-contact .coop__name {
  margin: 0 0 .45rem;
  font-family: var(--f-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-ink);
}
.page-contact .coop__desc {
  margin: 0;
  font-size: .86rem;
  line-height: 1.75;
  color: var(--c-ink-dim);
}

/* 图 */
.page-contact .channel__figure { margin: 0 0 1.4rem; }
.page-contact .channel__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}
.page-contact .channel__caption {
  margin-top: .6rem;
  font-size: .8rem;
  line-height: 1.65;
  color: var(--c-ink-dim);
}

/* ---------- 联系方式卡 ---------- */
.page-contact .info-card {
  padding: clamp(1.1rem, 2.6vw, 1.6rem);
  background: var(--c-glass);
  border: 1px solid var(--pc-glass-line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  box-shadow: 0 26px 60px -44px rgba(0, 0, 0, .95);
  scroll-margin-top: 96px;
}
.page-contact .info-card__eyebrow {
  margin: 0 0 .35rem;
  color: var(--c-volt);
}
.page-contact .info-card__title {
  margin: 0 0 1rem;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--step-3);
  line-height: 1.1;
}
.page-contact .info-card__media {
  margin: 0 0 1.1rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .12);
}
.page-contact .info-card__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-contact .info-list { margin: 0 0 1rem; padding: 0; }
.page-contact .info-row {
  display: grid;
  gap: .22rem;
  padding: .78rem 0;
  border-top: 1px solid rgba(255, 255, 255, .12);
}
.page-contact .info-row__key {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--c-text-dim);
}
.page-contact .info-row__val {
  margin: 0;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--c-text);
}
.page-contact .info-row__val--mono {
  font-family: var(--f-mono);
  font-size: .88rem;
  letter-spacing: .01em;
  word-break: break-all;
}
.page-contact .info-card__note {
  margin: 0 0 .6rem;
  font-size: .84rem;
  line-height: 1.72;
  color: var(--c-text);
  opacity: .82;
}
.page-contact .info-card__legal {
  margin: .9rem 0 0;
  padding-top: .85rem;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--c-text-dim);
}

/* ---------- 分流表 ---------- */
.page-contact .pc-route {
  background: var(--c-night);
  padding: clamp(2.2rem, 5.5vw, 3.6rem) 0;
}
.page-contact .pc-route__head {
  display: grid;
  gap: .5rem;
  margin-bottom: 1.3rem;
}
.page-contact .pc-route__title {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--step-2);
  line-height: 1.06;
}
.page-contact .pc-route__note {
  margin: 0;
  max-width: 46ch;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--c-text-dim);
}
.page-contact .pc-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin-bottom: 1.1rem;
  padding-bottom: .9rem;
  border-bottom: 1px solid rgba(31, 107, 79, .5);
}
.page-contact .pc-filter .chip {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .1em;
}
.page-contact .route-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-contact .route-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: .35rem 1rem;
  padding: .88rem .2rem;
  border-bottom: 1px solid rgba(31, 107, 79, .42);
}
.page-contact .route-item__name {
  font-size: .95rem;
  line-height: 1.65;
  color: var(--c-text);
}
.page-contact .route-item__lane {
  flex: none;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .14em;
  white-space: nowrap;
}
.page-contact .route-item[data-tags~="errata"] .route-item__lane { color: var(--c-stop); }
.page-contact .route-item[data-tags~="repost"] .route-item__lane { color: var(--c-volt); }
.page-contact .route-item[data-tags~="coop"] .route-item__lane { color: var(--c-paper); }

/* ---------- 回复节奏 ---------- */
.page-contact .pc-pace {
  position: relative;
  background: var(--c-ink);
  padding: clamp(2.6rem, 6vw, 4.2rem) 0;
}
.page-contact .pc-pace::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--c-volt) 0 22%, var(--c-line) 22% 100%);
}
.page-contact .pc-pace__title {
  margin: 0 0 1.2rem;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--step-2);
  line-height: 1.06;
}
.page-contact .pace-list {
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}
.page-contact .pace-row {
  padding: 1.05rem 0;
  border-top: 1px solid rgba(247, 245, 239, .16);
}
.page-contact .pace-row:last-child { border-bottom: 1px solid rgba(247, 245, 239, .16); }
.page-contact .pace-row__key {
  margin-bottom: .45rem;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-volt);
}
.page-contact .pace-row__val {
  margin: 0;
  max-width: 62ch;
  font-size: .93rem;
  line-height: 1.78;
  color: var(--c-text-dim);
}
.page-contact .pc-pace__note {
  margin: 0;
  max-width: 64ch;
  font-size: .9rem;
  line-height: 1.82;
  color: var(--c-text-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .coop-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 860px) {
  .page-contact .pc-lanes__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: end;
  }
  .page-contact .lane-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 960px) {
  .page-contact .pc-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(260px, 4fr);
  }
}

@media (min-width: 1024px) {
  .page-contact .pc-body {
    grid-template-columns: minmax(0, 8fr) minmax(280px, 4fr);
    align-items: start;
  }
  .page-contact .pc-body__side {
    position: sticky;
    top: 92px;
  }
}

@media (max-width: 560px) {
  .page-contact .pc-index__link { align-items: flex-start; }
  .page-contact .pc-index__label { font-size: .9rem; }
  .page-contact .route-item { padding: .8rem .1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .lane,
  .page-contact .pc-index__link { transition: none; }
}