.page-contact {
  --c-pad: clamp(20px, 5vw, 64px);
  --c-gap: clamp(18px, 2.6vw, 40px);
  background: var(--ink-night);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-contact h1,
.page-contact h2,
.page-contact h3,
.page-contact p,
.page-contact ul,
.page-contact ol,
.page-contact figure,
.page-contact pre {
  margin: 0;
}

.page-contact h1 {
  font-size: clamp(52px, 12vw, 132px);
  font-weight: 200;
  line-height: 0.92;
  letter-spacing: -0.02em;
}

.page-contact h2 {
  font-size: clamp(26px, 4.2vw, 40px);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-contact h3 {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.4;
}

.page-contact .num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-contact .section-index {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--note);
  margin-bottom: 18px;
}

.page-contact .lede {
  max-width: 42ch;
  color: var(--paper);
}

.page-contact .annot {
  max-width: 46ch;
  font-size: 12px;
  line-height: 1.8;
  color: var(--note);
  padding-left: 12px;
  border-left: 1px solid var(--gold);
}

/* ---------- 面包屑与首屏 ---------- */

.page-contact .contact-top {
  padding-top: clamp(104px, 15vw, 176px);
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 clamp(28px, 5vw, 56px);
  padding: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--note);
}

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

.page-contact .breadcrumb a {
  color: var(--note);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--gold-soft);
  border-bottom-color: var(--gold);
}

.page-contact .contact-hero-lede {
  padding-top: clamp(20px, 3vw, 34px);
}

.page-contact .contact-banner {
  margin-top: clamp(40px, 6vw, 84px);
  border-bottom: 1px solid var(--pitch);
}

/* ---------- 区块骨架 ---------- */

.page-contact .contact-block {
  position: relative;
}

.page-contact .contact-block::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold) 14%, var(--sketch) 58%, transparent);
  opacity: 0.65;
}

.page-contact .contact-block--night {
  background: var(--ink-night);
}

.page-contact .contact-block--board {
  background: var(--board);
}

.page-contact .contact-block--tunnel {
  background: var(--tunnel);
}

.page-contact .contact-block > .shell {
  padding-block: clamp(56px, 8vw, 108px);
}

.page-contact .contact-block--tight > .shell {
  padding-block: clamp(44px, 6vw, 80px);
}

.page-contact .contact-lede {
  margin-top: 20px;
}

/* ---------- 渠道卡 ---------- */

.page-contact .channel-deck {
  display: grid;
  gap: var(--c-gap);
  margin-top: clamp(32px, 5vw, 60px);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 3vw, 36px);
  background: var(--ink-night);
  border: 1px solid var(--pitch);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-contact .channel-card--mail {
  background: var(--pitch);
}

.page-contact .channel-tag {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--note);
}

.page-contact .channel-tag .num {
  letter-spacing: 0.08em;
}

.page-contact .channel-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
}

.page-contact .channel-value {
  font-family: var(--cond);
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.3;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .channel-value--addr {
  font-family: var(--sans);
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.page-contact .channel-desc {
  max-width: 40ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--note);
}

.page-contact .channel-meta {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--sketch);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

/* ---------- 事项路由 ---------- */

.page-contact .route-list {
  list-style: none;
  margin: clamp(30px, 4vw, 56px) 0 0;
  padding: 0;
  border-top: 1px solid var(--sketch);
}

.page-contact .route-row {
  display: grid;
  gap: 6px 24px;
  padding: clamp(20px, 3vw, 28px) 0;
  border-bottom: 1px solid var(--pitch);
}

.page-contact .route-num {
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-contact .route-title {
  font-size: 18px;
  font-weight: 600;
}

.page-contact .route-channel {
  font-family: var(--cond);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .route-detail {
  font-size: 14px;
  line-height: 1.85;
  color: var(--note);
}

/* ---------- 更正模板 ---------- */

.page-contact .template-box {
  position: relative;
  margin-top: clamp(28px, 4vw, 48px);
  background: var(--ink-night);
  border: 1px dashed var(--sketch);
  padding: clamp(24px, 3.4vw, 40px);
  transition: border-color 180ms var(--ease);
}

.page-contact .template-box:hover {
  border-color: var(--gold);
}

.page-contact .template-flag {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  padding: 3px 9px;
  background: var(--ink-night);
}

.page-contact .template-body {
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 2.1;
  color: var(--paper);
  white-space: pre-wrap;
  word-break: break-word;
  user-select: all;
  -webkit-user-select: all;
}

.page-contact .contact-block--tight .annot {
  margin-top: clamp(20px, 3vw, 32px);
}

/* ---------- 来信与书面材料 ---------- */

.page-contact .contact-split {
  row-gap: clamp(36px, 5vw, 64px);
}

.page-contact .contact-split-media .media-frame {
  border: 1px solid var(--pitch);
}

.page-contact .contact-split-body h2 {
  margin-bottom: 22px;
}

.page-contact .contact-split-body p + p {
  margin-top: 16px;
}

.page-contact .contact-split-body .annot {
  margin-top: 24px;
}

.page-contact .contact-xlink {
  margin-top: 26px;
  font-size: 14px;
  color: var(--note);
}

.page-contact .contact-xlink .link {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--sketch);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .contact-xlink .link:hover,
.page-contact .contact-xlink .link:focus-visible {
  color: var(--gold-soft);
  border-bottom-color: var(--gold);
}

/* ---------- 共建与合作 ---------- */

.page-contact .coop-grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  margin-top: clamp(30px, 4vw, 52px);
}

.page-contact .coop-block {
  border-top: 1px solid var(--sketch);
  padding-top: clamp(22px, 3vw, 32px);
}

.page-contact .coop-title {
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
  margin-bottom: 18px;
}

.page-contact .coop-list {
  list-style: none;
  counter-reset: coop;
  padding: 0;
}

.page-contact .coop-list li {
  position: relative;
  counter-increment: coop;
  padding-left: 46px;
  padding-block: 12px;
  border-bottom: 1px solid var(--pitch);
  font-size: 14px;
  line-height: 1.85;
  color: var(--note);
}

.page-contact .coop-list li::before {
  content: counter(coop, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--data);
}

.page-contact .coop-note {
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.9;
}

.page-contact .coop-block--aside .annot {
  margin-top: 22px;
}

/* ---------- 合规信息 ---------- */

.page-contact .contact-compliance {
  padding-block: clamp(52px, 7vw, 92px);
}

.page-contact .compliance-title {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--gold-soft);
  margin-bottom: 18px;
}

.page-contact .compliance-icp {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 14px;
  color: var(--note);
  margin-bottom: 20px;
}

.page-contact .compliance-icp .latin {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--sketch);
}

.page-contact .compliance-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  margin-bottom: 20px;
}

.page-contact .compliance-links .link {
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--sketch);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .compliance-links .link:hover,
.page-contact .compliance-links .link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .compliance-note {
  max-width: 46ch;
  font-size: 12px;
  line-height: 1.85;
  color: var(--note);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-contact .route-row {
    grid-template-columns: 48px minmax(0, 0.9fr) minmax(0, 0.85fr) minmax(0, 1.6fr);
    align-items: baseline;
  }

  .page-contact .coop-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr);
  }
}

@media (min-width: 900px) {
  .page-contact .channel-deck {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .channel-card--mail {
    grid-column: 1 / span 6;
    grid-row: 1 / span 2;
  }

  .page-contact .channel-card--phone {
    grid-column: 8 / span 5;
    grid-row: 1;
  }

  .page-contact .channel-card--addr {
    grid-column: 8 / span 4;
    grid-row: 2;
    margin-top: clamp(18px, 2.6vw, 44px);
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero-lede {
    padding-top: clamp(30px, 3.4vw, 52px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .template-box,
  .page-contact .breadcrumb a,
  .page-contact .contact-xlink .link,
  .page-contact .compliance-links .link {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within {
    transform: none;
  }
}