.page-contact {
  --cp-gap: clamp(18px, 3vw, 34px);
  --cp-rail: 400px;
  background: var(--pitch);
  color: var(--cold);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: clamp(26px, 5vw, 58px) 0 clamp(18px, 3vw, 34px);
}

.page-contact .contact-head {
  margin-top: clamp(18px, 3vw, 32px);
}

.page-contact .contact-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 9vw, 88px);
  line-height: 0.96;
  letter-spacing: -0.02em;
  color: var(--cold);
}

.page-contact .contact-title::after {
  content: "";
  display: block;
  width: clamp(64px, 12vw, 112px);
  height: 8px;
  margin-top: 16px;
  background: var(--neon);
}

.page-contact .contact-lead {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.25vw, 18px);
  line-height: 1.8;
  color: var(--cold-70);
}

/* ---------- 主布局 ---------- */
.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--cp-gap);
  align-items: start;
  padding-bottom: clamp(48px, 8vw, 108px);
}

.page-contact .contact-rail,
.page-contact .contact-stream {
  min-width: 0;
}

/* ---------- 联系卡片 ---------- */
.page-contact .contact-card {
  display: flex;
  flex-direction: column;
  background: var(--pitch-deep);
  border: var(--bw) solid var(--line-cold-strong);
  box-shadow: 6px 6px 0 var(--neon);
}

.page-contact .contact-media {
  order: 2;
  margin: 0;
  border-top: var(--bw) solid var(--line-cold-strong);
}

.page-contact .contact-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.06) brightness(0.9);
}

.page-contact .contact-card__body {
  order: 1;
  display: grid;
  gap: 6px;
  padding: clamp(20px, 3vw, 28px) clamp(18px, 2.6vw, 26px) clamp(24px, 3.4vw, 32px);
}

.page-contact .contact-card__stamp {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cold-52);
}

.page-contact .contact-card__stamp:first-child {
  margin-top: 0;
}

.page-contact .contact-value {
  display: inline-block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--cold);
  text-decoration: none;
  word-break: break-word;
  border-bottom: 2px solid var(--neon-40);
  align-self: start;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-value:hover,
.page-contact .contact-value:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-contact .contact-value--plain {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  border-bottom-color: transparent;
  cursor: default;
}

.page-contact .contact-hours {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 3px solid var(--neon);
}

.page-contact .contact-hours__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--neon);
}

.page-contact .contact-hours__text {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(14px, 1.4vw, 16px);
  color: var(--cold);
}

.page-contact .hours-scale {
  position: relative;
  height: 40px;
  margin-top: 16px;
}

.page-contact .hours-scale__track,
.page-contact .hours-scale__window {
  position: absolute;
  top: 10px;
  height: 6px;
}

.page-contact .hours-scale__track {
  left: 0;
  right: 0;
  background: rgba(246, 248, 244, 0.14);
}

.page-contact .hours-scale__window {
  left: 39.6%;
  width: 37.5%;
  background: var(--neon);
}

.page-contact .hours-scale__tick {
  position: absolute;
  top: 26px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--cold-52);
  white-space: nowrap;
}

.page-contact .hours-scale__tick--open {
  left: 39.6%;
}

.page-contact .hours-scale__tick--close {
  right: 0;
}

.page-contact .contact-hours__note {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--cold-52);
}

/* ---------- 右侧内容流 ---------- */
.page-contact .contact-stream {
  display: grid;
  gap: clamp(44px, 6vw, 88px);
}

.page-contact .contact-block {
  min-width: 0;
}

.page-contact .block-head {
  max-width: 62ch;
}

.page-contact .block-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 6vw, 74px);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: rgba(246, 248, 244, 0.2);
  transition: color 0.35s var(--ease);
}

.page-contact .contact-block.is-current .block-num {
  color: var(--neon);
}

.page-contact .block-kicker {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--brick);
}

.page-contact .contact-block.is-current .block-kicker {
  color: var(--neon);
}

.page-contact .block-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--cold);
}

.page-contact .block-lead {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.8;
  color: var(--cold-70);
}

/* ---------- 分流示意 ---------- */
.page-contact .channel-figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
  border: var(--bw) solid var(--line-cold-strong);
  background: var(--pitch-deep);
}

.page-contact .channel-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-contact .channel-figure__cap {
  padding: 10px 16px;
  border-top: var(--bw) solid var(--line-cold-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cold-52);
}

/* ---------- 分类通道 ---------- */
.page-contact .channel-list {
  margin-top: clamp(22px, 3vw, 34px);
  border: var(--bw) solid var(--line-cold-strong);
  background: var(--pitch-deep);
}

.page-contact .channel {
  border-bottom: var(--bw) solid var(--line-cold-strong);
}

.page-contact .channel:last-child {
  border-bottom: 0;
}

.page-contact .channel__sum {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 26px;
  align-items: center;
  gap: 2px 14px;
  padding: clamp(16px, 2.2vw, 24px) clamp(16px, 2.4vw, 28px);
  cursor: pointer;
  list-style: none;
  transition: background var(--dur) var(--ease);
}

.page-contact .channel__sum::-webkit-details-marker {
  display: none;
}

.page-contact .channel__sum:hover {
  background: rgba(203, 242, 76, 0.06);
}

.page-contact .channel__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--neon);
}

.page-contact .channel__title {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 1.7vw, 21px);
  line-height: 1.35;
  letter-spacing: -0.005em;
  color: var(--cold);
}

.page-contact .channel__hint {
  grid-column: 2;
  grid-row: 2;
  font-size: 13px;
  line-height: 1.6;
  color: var(--cold-52);
}

.page-contact .channel__sum::after {
  content: "+";
  grid-column: 3;
  grid-row: 1 / span 2;
  justify-self: end;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--neon);
}

.page-contact .channel[open] .channel__sum::after {
  content: "−";
}

.page-contact .channel__body {
  display: grid;
  gap: 14px;
  padding: 18px clamp(16px, 2.4vw, 28px) clamp(20px, 2.6vw, 30px);
  border-top: 1px dashed var(--line-cold);
  background: rgba(6, 26, 20, 0.6);
}

.page-contact .need-intro {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cold-70);
}

.page-contact .need-title {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--teal);
}

.page-contact .need-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-contact .need-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--cold-70);
}

.page-contact .need-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 8px;
  background: var(--neon);
}

/* ---------- 处理流程 ---------- */
.page-contact .flow-list {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 2px 16px;
  padding: clamp(16px, 2.2vw, 24px) 0;
  border-top: 3px solid var(--line-cold-strong);
}

.page-contact .flow-step:last-child {
  border-bottom: 3px solid var(--line-cold-strong);
}

.page-contact .flow-step__idx {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--neon);
}

.page-contact .flow-step__title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.35;
  color: var(--cold);
}

.page-contact .flow-step__text {
  grid-column: 2;
  grid-row: 2;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cold-70);
}

/* ---------- 协作网络 ---------- */
.page-contact .network-board {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-cold-strong);
  border: var(--bw) solid var(--line-cold-strong);
}

.page-contact .network-board .score-cell {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: clamp(18px, 2.4vw, 28px) clamp(14px, 2vw, 22px);
  background: var(--pitch-deep);
}

.page-contact .network-board .score-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 4.4vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--neon);
}

.page-contact .network-board .score-label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--cold-70);
}

.page-contact .network-ways {
  margin-top: clamp(18px, 2.4vw, 26px);
  display: grid;
  gap: 0;
  border-top: 3px solid var(--line-cold-strong);
}

.page-contact .way-card {
  padding: clamp(18px, 2.4vw, 26px) 0;
  border-bottom: 1px dashed var(--line-cold);
}

.page-contact .way-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.4;
  color: var(--cold);
}

.page-contact .way-card__title::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 4px;
  margin-right: 10px;
  vertical-align: 0.28em;
  background: var(--brick);
}

.page-contact .way-card__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cold-70);
}

/* ---------- 提交前自查 ---------- */
.page-contact .selfcheck {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 3px solid var(--line-cold-strong);
}

.page-contact .selfcheck__item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: clamp(14px, 1.8vw, 20px) 0;
  border-bottom: 1px dashed var(--line-cold);
}

.page-contact .selfcheck__box {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  width: 22px;
  height: 22px;
  margin: 3px 0 0;
  border: var(--bw) solid var(--line-cold-strong);
  background: var(--pitch-deep);
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .selfcheck__box:checked {
  background: var(--neon);
  border-color: var(--neon);
}

.page-contact .selfcheck__box:focus-visible {
  outline: 3px solid var(--neon);
  outline-offset: 2px;
}

.page-contact .selfcheck__label {
  font-size: 15px;
  line-height: 1.8;
  color: var(--cold-70);
  cursor: pointer;
}

.page-contact .precheck-tail {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding: clamp(16px, 2.2vw, 22px) clamp(16px, 2.4vw, 24px);
  border-left: 8px solid var(--brick);
  background: rgba(6, 26, 20, 0.7);
  font-size: 15px;
  line-height: 1.8;
  color: var(--cold-70);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-media {
    order: 1;
    border-top: 0;
    border-bottom: var(--bw) solid var(--line-cold-strong);
  }

  .page-contact .contact-card__body {
    order: 2;
  }

  .page-contact .channel__body {
    padding-left: clamp(62px, 7vw, 78px);
  }

  .page-contact .network-board {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .network-ways {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 clamp(20px, 3vw, 36px);
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(300px, var(--cp-rail)) minmax(0, 1fr);
    gap: clamp(32px, 4.5vw, 68px);
  }

  .page-contact .contact-rail {
    position: sticky;
    top: clamp(96px, 14vh, 148px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-value,
  .page-contact .channel__sum,
  .page-contact .selfcheck__box,
  .page-contact .block-num,
  .page-contact .block-kicker {
    transition: none;
  }
}