.page-contact {
  --contact-gap: 22px;
  --contact-edge: 20px;
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--contact-edge);
  padding-bottom: 96px;
  color: var(--paper);
}

.page-contact .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime-2);
}

.page-contact .display-lg {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.06;
  margin: 0;
  color: var(--paper);
}

.page-contact .display-md {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.16;
  margin: 0;
  color: var(--paper);
  font-size: clamp(26px, 4.2vw, 44px);
}

.page-contact .lede {
  margin: 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(244, 241, 230, 0.82);
}

.page-contact .lede a,
.page-contact .before-mail__tip a,
.page-contact .updates a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .lede a:hover,
.page-contact .before-mail__tip a:hover,
.page-contact .updates a:hover {
  color: var(--lime-2);
}

.page-contact .figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(200, 250, 75, 0.22);
  background: var(--pitch);
}

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

.page-contact .figure--square {
  aspect-ratio: 1 / 1;
}

.page-contact .figure--wide {
  aspect-ratio: 2 / 1;
}

.page-contact .section-head {
  max-width: 46rem;
}

/* ---------- 面包屑 ---------- */

.page-contact .breadcrumb {
  padding-top: 20px;
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--line);
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .breadcrumb a {
  color: var(--line);
  text-decoration: none;
}

.page-contact .breadcrumb a:hover {
  color: var(--lime);
}

.page-contact .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--lime-2);
  opacity: 0.7;
}

.page-contact .breadcrumb [aria-current="page"] {
  color: var(--lime-2);
}

/* ---------- 首屏 ---------- */

.contact-hero {
  padding-block: 30px 10px;
}

.contact-hero h1 {
  font-size: clamp(34px, 7.4vw, 64px);
  margin-bottom: 20px;
}

.contact-hero__hint {
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  line-height: 1.7;
  color: var(--lime-2);
}

.contact-hero__figure {
  margin-top: 30px;
  border-radius: var(--radius-lg);
}

/* ---------- 渠道卡 ---------- */

.channels,
.routing,
.before-mail {
  margin-top: 84px;
}

.channel-grid {
  display: grid;
  gap: var(--contact-gap);
  margin-top: 34px;
}

.channel-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 26px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(200, 250, 75, 0.22);
  background: linear-gradient(180deg, rgba(11, 58, 46, 0.96), rgba(5, 35, 28, 0.96));
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.channel-card:hover {
  border-color: rgba(200, 250, 75, 0.5);
  transform: translateY(-3px);
}

.channel-card__icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1.5px solid rgba(200, 250, 75, 0.55);
  color: var(--lime);
  margin-bottom: 6px;
}

.channel-card__icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.channel-card__title {
  margin: 0;
  font-family: var(--font-label);
  font-size: 17px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--paper);
}

.channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--lime);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.channel-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 241, 230, 0.78);
}

.channel-card__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(244, 241, 230, 0.6);
}

.channel-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
}

.channel-card__tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid rgba(200, 250, 75, 0.32);
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--lime-2);
}

/* ---------- 渠道对照 ---------- */

.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.page-contact .filter-chip {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid rgba(200, 250, 75, 0.3);
  background: transparent;
  color: var(--paper);
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .filter-chip:hover {
  border-color: var(--lime);
  color: var(--lime);
}

.page-contact .filter-chip[aria-pressed="true"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--night);
}

.page-contact .filter-chip:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.routing-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid rgba(126, 154, 140, 0.32);
}

.routing-row {
  display: grid;
  gap: 6px;
  padding: 20px 4px;
  border-bottom: 1px solid rgba(126, 154, 140, 0.24);
}

.routing-row[hidden] {
  display: none;
}

.routing-row__issue {
  font-size: 17px;
  line-height: 1.6;
  color: var(--paper);
}

.routing-row__channel {
  font-family: var(--font-label);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--lime);
}

.routing-row__pace {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: rgba(244, 241, 230, 0.62);
}

/* ---------- 写邮件之前 ---------- */

.checklist {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.checklist__item {
  padding: 24px 24px 26px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(200, 250, 75, 0.18);
  border-left: 4px solid var(--lime);
  background: rgba(20, 81, 62, 0.55);
}

.checklist__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.checklist__item h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.3;
  color: var(--paper);
}

.checklist__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 241, 230, 0.78);
}

.before-mail__tip {
  margin: 30px 0 0;
  max-width: 52rem;
  font-size: 15px;
  line-height: 1.88;
  color: rgba(244, 241, 230, 0.72);
}

/* ---------- 资料整理与更新时间 ---------- */

.updates {
  margin-top: 84px;
  padding: 38px 24px 40px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(200, 250, 75, 0.2);
  background: var(--indigo);
}

.updates__grid {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

.updates p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 241, 230, 0.86);
}

.updates p:last-child {
  margin-bottom: 0;
}

.updates__stamp {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px !important;
}

.updates__stamp-label {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime-2);
}

.updates__stamp-num {
  font-family: var(--font-mono);
  font-size: 19px;
  letter-spacing: 0.02em;
  color: var(--lime);
}

/* ---------- 运营中心 ---------- */

.office {
  margin-top: 84px;
}

.office p {
  margin: 0 0 16px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 241, 230, 0.82);
}

.office__addr {
  font-family: var(--font-mono) !important;
  font-size: 15px !important;
  line-height: 1.7 !important;
  letter-spacing: 0.02em;
  color: var(--lime) !important;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(200, 250, 75, 0.42);
  background: rgba(11, 58, 46, 0.65);
}

.office__figure {
  margin-top: 30px;
}

/* ---------- 合作 ---------- */

.partners {
  margin-top: 90px;
}

.partners__banner {
  padding: 36px 24px 38px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(200, 250, 75, 0.22);
  background: linear-gradient(140deg, rgba(112, 40, 58, 0.94), rgba(46, 42, 94, 0.94));
}

.partners__body p {
  margin: 14px 0 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 241, 230, 0.86);
}

.partners__tip {
  margin: 26px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 241, 230, 0.8);
}

.partners__subject {
  display: inline-block;
  margin-top: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: rgba(5, 35, 28, 0.72);
  border: 1px solid rgba(200, 250, 75, 0.28);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--lime);
  word-break: break-word;
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-contact {
    --contact-edge: 32px;
  }

  .updates {
    padding: 46px 40px 48px;
  }

  .partners__banner {
    padding: 44px 40px 46px;
  }

  .channel-card {
    padding: 32px 30px 30px;
  }
}

@media (min-width: 860px) {
  .page-contact {
    --contact-edge: 44px;
  }

  .contact-hero {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: end;
    padding-block: 44px 18px;
  }

  .contact-hero__figure {
    margin-top: 0;
  }

  .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .checklist {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .updates__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 44px;
    margin-top: 34px;
  }

  .office {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 46px;
    align-items: center;
  }

  .office__figure {
    margin-top: 0;
  }

  .partners__banner {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 44px;
    align-items: center;
  }

  .partners__tip {
    margin-top: 0;
  }
}

@media (min-width: 1080px) {
  .routing-row {
    grid-template-columns: minmax(0, 5fr) minmax(0, 2.6fr) minmax(0, 2.6fr);
    gap: 28px;
    align-items: baseline;
    padding: 22px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .channel-card,
  .page-contact .filter-chip {
    transition: none;
  }

  .channel-card:hover {
    transform: none;
  }
}