.page-contact {
  --on-paper: #0A211C;
  --on-paper-soft: #3E524B;
  --on-paper-line: rgba(10, 33, 28, .26);
  --lane-lift: 0 18px 40px rgba(0, 0, 0, .48);
  background: var(--ink);
  color: var(--text);
  padding-bottom: clamp(64px, 9vw, 128px);
}

.page-contact .breadcrumb {
  margin-top: clamp(20px, 3vw, 36px);
}

/* ---------- 首屏 ---------- */
.page-contact .masthead {
  position: relative;
  margin-top: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(32px, 5vw, 64px);
  border-bottom: 1px solid var(--grid);
}

.page-contact .masthead::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: clamp(72px, 12vw, 140px);
  background: linear-gradient(180deg, var(--cyan), rgba(53, 242, 201, 0));
}

.page-contact .masthead .eyebrow {
  margin: 0 0 16px;
}

.page-contact .masthead h1 {
  margin: 0;
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(36px, 7vw, 84px);
  line-height: 0.96;
  letter-spacing: -0.025em;
  color: var(--paper);
  max-width: 13ch;
}

.page-contact .lede {
  margin: clamp(22px, 3vw, 32px) 0 0;
  max-width: 44ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .quick {
  display: grid;
  gap: 1px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-contact .quick > div {
  background: var(--den);
  padding: 16px 18px;
}

.page-contact .quick dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-contact .quick dd {
  margin: 10px 0 0;
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--amber);
  overflow-wrap: anywhere;
}

@media (min-width: 760px) {
  .page-contact .quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 横幅 ---------- */
.page-contact .banner {
  margin-top: clamp(32px, 5vw, 56px);
  margin-bottom: 0;
}

/* ---------- 通用区块 ---------- */
.page-contact .block {
  margin-top: clamp(56px, 8vw, 104px);
}

.page-contact .section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--grid);
}

.page-contact .section-head .idx {
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-contact .section-head h2 {
  margin: 0;
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .block-lede {
  max-width: 48ch;
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-contact a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

.page-contact a:focus-visible,
.page-contact button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 三张通道卡 ---------- */
.page-contact .lanes {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
  margin-top: clamp(28px, 4vw, 46px);
}

.page-contact .lane {
  --rot: -0.4deg;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 2.6vw, 30px);
  color: var(--on-paper);
  transform: rotate(var(--rot));
  transition: transform 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-contact .lane:nth-child(2) { --rot: 0.32deg; }
.page-contact .lane:nth-child(3) { --rot: -0.16deg; }

.page-contact .lane:hover,
.page-contact .lane:focus-within {
  transform: rotate(var(--rot)) translateY(-4px);
  box-shadow: var(--lane-lift);
}

.page-contact .lane .tag {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  padding: 5px 10px;
  border: 1px solid var(--on-paper-line);
  background: transparent;
  color: var(--on-paper);
}

.page-contact .lane h3 {
  margin: 0;
  font-family: var(--sans);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--on-paper);
}

.page-contact .lane p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--on-paper-soft);
}

.page-contact .lane .lane-foot {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dashed var(--on-paper-line);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--amber-deep);
  overflow-wrap: anywhere;
}

@media (min-width: 900px) {
  .page-contact .lanes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 分栏：账号与使用 ---------- */
.page-contact .split {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-contact .split-body p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
}

.page-contact .checks {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-contact .checks li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 13px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .checks strong {
  color: var(--paper);
  font-weight: 700;
}

.page-contact .split-media .figure {
  margin: 0;
}

@media (min-width: 900px) {
  .page-contact .split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

/* ---------- 商务合作 ---------- */
.page-contact .deals {
  margin-top: clamp(26px, 4vw, 42px);
  border-top: 1px solid var(--grid);
}

.page-contact .deal {
  display: grid;
  gap: 8px;
  padding: clamp(22px, 3vw, 34px) 0;
  border-bottom: 1px solid var(--grid);
}

.page-contact .deal-no {
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-contact .deal h3 {
  margin: 0;
  font-family: var(--sans);
  font-weight: 800;
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .deal p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
  max-width: 56ch;
}

@media (min-width: 860px) {
  .page-contact .deal {
    grid-template-columns: 76px minmax(0, 1fr) minmax(0, 1.35fr);
    align-items: baseline;
    gap: 0 32px;
  }
  .page-contact .deal-no { grid-row: 1; }
  .page-contact .deal h3 { grid-column: 2; }
  .page-contact .deal p { grid-column: 3; }
}

.page-contact .deal-note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  max-width: 62ch;
  padding-left: 18px;
  border-left: 2px solid var(--amber);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 数据纠错 ---------- */
.page-contact .fix {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-contact .fix-lead p {
  margin: 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .fields {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--grid);
}

.page-contact .fields li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--grid);
}

.page-contact .field-k {
  font-size: 16px;
  line-height: 1.6;
  color: var(--cyan);
}

.page-contact .field-v {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

.page-contact .field-v strong {
  color: var(--paper);
  font-weight: 700;
}

@media (min-width: 900px) {
  .page-contact .fix {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

/* ---------- 来信与办公时段 ---------- */
.page-contact .desk {
  display: grid;
  gap: clamp(24px, 3.6vw, 40px);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-contact .desk-card {
  padding: clamp(24px, 3vw, 34px);
  color: var(--on-paper);
}

.page-contact .desk-label {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--on-paper-soft);
}

.page-contact .desk-address {
  margin: 14px 0 0;
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--on-paper);
}

.page-contact .desk-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--on-paper-line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--on-paper-soft);
}

.page-contact .hours {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--grid);
}

.page-contact .hours li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  padding: 15px 0;
  border-bottom: 1px solid var(--grid);
}

.page-contact .hours-k {
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-contact .hours-v {
  font-size: 15px;
  color: var(--amber);
}

.page-contact .desk-foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .desk-foot .num {
  color: var(--text);
}

@media (min-width: 900px) {
  .page-contact .desk {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }
}

/* ---------- 动效退化 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .lane,
  .page-contact .lane:hover,
  .page-contact .lane:focus-within {
    transform: none;
    transition: none;
  }
}
</main>