.page-contact {
  --pc-y: clamp(46px, 7.5vw, 112px);
  --pc-line: var(--line);
  --pc-line-strong: var(--line-strong);
  background:
    radial-gradient(115% 62% at 82% 0%, rgba(46, 111, 78, .2) 0%, rgba(10, 26, 42, 0) 62%),
    var(--night);
  color: var(--bone);
  overflow-x: clip;
}

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

.page-contact a {
  color: inherit;
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

.page-contact .section-title {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(25px, 3.5vw, 42px);
  line-height: 1.1;
  letter-spacing: -.015em;
  color: var(--bone);
}

/* ---------- 首屏 ---------- */

.contact-hero {
  border-bottom: 2px solid var(--pc-line-strong);
}

.contact-hero__media {
  position: relative;
  height: clamp(160px, 24vw, 330px);
  border-bottom: 3px solid var(--pitch);
  background: var(--deep);
  overflow: hidden;
}

.contact-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .78;
  filter: saturate(.82) contrast(1.06);
}

.contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 26, 42, .05) 0%, rgba(10, 26, 42, .88) 100%);
  pointer-events: none;
}

.contact-hero__inner {
  max-width: var(--stage-max);
  margin: 0 auto;
  padding: clamp(24px, 3.6vw, 46px) var(--gutter) clamp(36px, 5vw, 72px);
}

.contact-hero__kicker {
  margin: 18px 0 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--moss);
}

.contact-hero__title {
  margin: 14px 0 0;
  font-family: var(--f-display);
  font-weight: 200;
  font-size: clamp(33px, 6.4vw, 82px);
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--bone);
}

.contact-hero__lede {
  max-width: 64ch;
  margin: 22px 0 0;
  font-family: var(--f-serif);
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 公共段落容器 ---------- */

.channel-board,
.fix-block,
.coop-block,
.reply-block,
.addr-block,
.self-check {
  max-width: var(--stage-max);
  margin: 0 auto;
  padding: var(--pc-y) var(--gutter) 0;
}

.self-check {
  padding-bottom: var(--pc-y);
}

.contact-stamp {
  margin: 0;
  font-family: var(--f-sans);
  font-style: italic;
  font-weight: 300;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--stone);
}

@media (min-width: 700px) {
  .contact-stamp {
    text-align: right;
  }
}

/* ---------- 渠道总览 ---------- */

.channel-board__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px 30px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--pc-line-strong);
}

.channel-board__kicker {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--clay);
}

.channel-board__grid {
  display: grid;
  gap: clamp(24px, 3vw, 44px);
  margin-top: clamp(22px, 3.2vw, 40px);
}

@media (min-width: 900px) {
  .channel-board__grid {
    grid-template-columns: minmax(0, 37fr) minmax(0, 63fr);
    align-items: start;
  }
}

.channel-board__label {
  margin: 0 0 12px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--moss);
}

.issue-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: issue;
  border-bottom: 1px solid var(--pc-line);
}

.issue-list__link {
  position: relative;
  display: block;
  padding: 16px 14px 16px 54px;
  border-top: 1px solid var(--pc-line);
  font-family: var(--f-sans);
  font-size: 15px;
  line-height: 1.62;
  color: var(--silver);
  text-decoration: none;
  transition: color .18s var(--ease), background-color .18s var(--ease);
}

.issue-list__link::before {
  counter-increment: issue;
  content: counter(issue, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 17px;
  width: 42px;
  font-family: var(--f-mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--stone);
  font-variant-numeric: tabular-nums;
  transition: color .18s var(--ease);
}

.issue-list__link::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--pitch);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .2s var(--ease);
}

.issue-list__link:hover,
.issue-list__link:focus-visible {
  background: rgba(46, 111, 78, .2);
  color: var(--bone);
}

.issue-list__link:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.issue-list__link:hover::after,
.issue-list__link:focus-visible::after {
  transform: scaleY(1);
}

.issue-list__link:hover::before,
.issue-list__link:focus-visible::before {
  color: var(--amber);
}

.channel-board__stack {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
}

.channel-card {
  position: relative;
  scroll-margin-top: 26px;
  padding: clamp(20px, 2.6vw, 32px);
  border: 2px solid var(--pc-line-strong);
  background: var(--deep);
  box-shadow: var(--hard);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}

.channel-card:hover,
.channel-card:focus-within {
  border-color: var(--pitch);
  transform: translateY(-3px);
}

.channel-card:target {
  border-color: var(--pitch);
  box-shadow: 6px 6px 0 0 var(--pitch);
  transform: translateY(-3px);
}

.channel-card__tag {
  display: inline-block;
  margin: 0 0 14px;
  font-family: var(--f-sans);
  font-size: 12px;
  letter-spacing: .12em;
}

.channel-card__name {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--bone);
}

.channel-card__value {
  margin: 10px 0 0;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: clamp(16px, 1.85vw, 23px);
  line-height: 1.32;
  letter-spacing: .01em;
  color: var(--silver);
  overflow-wrap: anywhere;
}

.channel-card__meta {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--pc-line);
}

@media (min-width: 620px) {
  .channel-card__row {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

.channel-card__row dt {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--moss);
}

.channel-card__row dd {
  margin: 4px 0 0;
  font-family: var(--f-sans);
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--silver);
}

@media (min-width: 620px) {
  .channel-card__row dd {
    margin-top: 0;
  }
}

@media (max-width: 619px) {
  .channel-card__row {
    display: block;
  }
}

/* ---------- 数据纠错 ---------- */

.fix-block {
  display: grid;
  gap: clamp(24px, 3vw, 42px);
  align-items: start;
}

@media (min-width: 900px) {
  .fix-block {
    grid-template-columns: minmax(0, 40fr) minmax(0, 60fr);
  }
}

.fix-block__media {
  border: 2px solid var(--pc-line-strong);
  background: var(--deep);
  box-shadow: var(--hard);
  overflow: hidden;
}

.fix-block__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  opacity: .9;
}

.fix-block__caption {
  margin: 0;
  padding: 12px 14px;
  border-top: 1px solid var(--pc-line);
  font-family: var(--f-sans);
  font-style: italic;
  font-weight: 300;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--stone);
}

.fix-block__lede {
  margin: 18px 0 0;
  font-family: var(--f-serif);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
}

.fix-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  counter-reset: fix;
  border-top: 1px solid var(--pc-line);
}

.fix-list__item {
  position: relative;
  padding: 14px 0 14px 42px;
  border-bottom: 1px solid var(--pc-line);
}

.fix-list__item::before {
  counter-increment: fix;
  content: counter(fix, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 15px;
  font-family: var(--f-mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

@media (min-width: 700px) {
  .fix-list__item {
    display: grid;
    grid-template-columns: 138px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

.fix-list__k {
  display: block;
  font-family: var(--f-sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--bone);
}

.fix-list__v {
  display: block;
  margin-top: 4px;
  font-family: var(--f-sans);
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

@media (min-width: 700px) {
  .fix-list__v {
    margin-top: 0;
  }
}

.fix-block__foot {
  margin: 22px 0 0;
  font-family: var(--f-serif);
  font-size: 15px;
  line-height: 1.82;
  color: var(--silver);
}

.page-contact .fix-block__foot a,
.page-contact .coop-grid__v a,
.page-contact .self-check__foot a {
  color: var(--amber);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .fix-block__foot a:hover,
.page-contact .coop-grid__v a:hover,
.page-contact .self-check__foot a:hover {
  color: var(--bone);
}

/* ---------- 合作与授权 ---------- */

.coop-block__lede {
  margin: 18px 0 0;
  max-width: 66ch;
  font-family: var(--f-serif);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
}

.coop-grid {
  display: grid;
  margin-top: 26px;
  border-top: 2px solid var(--pc-line-strong);
}

@media (min-width: 760px) {
  .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.coop-grid__cell {
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--pc-line);
}

@media (min-width: 760px) {
  .coop-grid__cell:nth-child(odd) {
    padding-right: 30px;
    border-right: 1px solid var(--pc-line);
  }
  .coop-grid__cell:nth-child(even) {
    padding-left: 30px;
  }
}

.coop-grid__k {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--moss);
}

.coop-grid__v {
  margin: 9px 0 0;
  font-family: var(--f-sans);
  font-size: 15px;
  line-height: 1.72;
  color: var(--silver);
}

/* ---------- 回复时段 ---------- */

.reply-block__inner {
  display: grid;
  gap: 26px;
  padding: clamp(24px, 3.4vw, 46px);
  border: 2px solid var(--pitch);
  background: linear-gradient(140deg, var(--turf) 0%, var(--deep) 68%);
  box-shadow: var(--hard);
}

@media (min-width: 820px) {
  .reply-block__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 44px;
  }
}

.reply-block__lead p {
  margin: 16px 0 0;
  max-width: 58ch;
  font-family: var(--f-serif);
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--silver);
}

.reply-block__num {
  margin: 0;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: clamp(28px, 4.6vw, 54px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.reply-block__unit {
  margin: 10px 0 0;
  font-family: var(--f-sans);
  font-style: italic;
  font-weight: 300;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--silver);
}

/* ---------- 地址与备案 ---------- */

.addr-list {
  margin: 22px 0 0;
  border-top: 1px solid var(--pc-line);
}

.addr-list__row {
  padding: 14px 0;
  border-bottom: 1px solid var(--pc-line);
}

@media (min-width: 680px) {
  .addr-list__row {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

.addr-list__row dt {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--moss);
}

.addr-list__row dd {
  margin: 5px 0 0;
  font-family: var(--f-sans);
  font-size: 15px;
  line-height: 1.68;
  color: var(--bone);
}

@media (min-width: 680px) {
  .addr-list__row dd {
    margin-top: 0;
  }
}

.addr-list__row--icp dd {
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--stone);
}

/* ---------- 自查清单 ---------- */

.check-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--pc-line);
}

.check-list li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 15px 0;
  border-bottom: 1px solid var(--pc-line);
}

.check-list__num {
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 15px;
  color: var(--clay);
  font-variant-numeric: tabular-nums;
}

.check-list__txt {
  font-family: var(--f-sans);
  font-size: 15px;
  line-height: 1.72;
  color: var(--silver);
}

.self-check__foot {
  margin: 22px 0 0;
  max-width: 66ch;
  font-family: var(--f-serif);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 显现动效 ---------- */

.page-contact [data-reveal].is-visible {
  animation: pc-rise .5s var(--ease) both;
}

@keyframes pc-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact [data-reveal].is-visible {
    animation: none;
  }
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}