.page-contact {
  --pc-radius: 4px 22px 22px 4px;
  --pc-pad: clamp(1.15rem, 3vw, 1.75rem);
  --pc-section-y: clamp(2.2rem, 5.5vw, 3.6rem);
}

.page-contact a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(20, 242, 200, 0.32);
  transition: border-color 0.16s var(--ease);
}

.page-contact a:hover,
.page-contact a:focus-visible {
  border-bottom-color: var(--c-cyan);
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  color: var(--c-paper);
  font-weight: 800;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(1.4rem, 4vw, 2.4rem);
  padding-bottom: clamp(1.8rem, 5vw, 3rem);
}

.page-contact .contact-hero-grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.4rem);
}

@media (min-width: 900px) {
  .page-contact .contact-hero-grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    align-items: center;
  }
}

.page-contact h1 {
  font-size: clamp(1.9rem, 6.4vw, 3.35rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0.55rem 0 0.9rem;
  text-wrap: balance;
}

.page-contact .lede {
  margin: 0;
  max-width: 34em;
  color: var(--c-muted);
  font-size: 0.95rem;
  line-height: 1.85;
}

.page-contact .hero-hint {
  margin: 1rem 0 0;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--c-sand);
}

.page-contact .hero-visual {
  margin: 0;
}

.page-contact .hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--c-line);
  border-radius: 4px 26px 4px 26px;
}

.page-contact .media-caption {
  margin-top: 0.7rem;
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 区块骨架 ---------- */
.page-contact .contact-section {
  border-top: 1px solid var(--c-line);
  padding-top: var(--pc-section-y);
  padding-bottom: var(--pc-section-y);
}

.page-contact .contact-head {
  max-width: 44rem;
  margin-bottom: clamp(1.2rem, 3.5vw, 2rem);
}

.page-contact .contact-head h2 {
  font-size: clamp(1.45rem, 4vw, 2.2rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin: 0.4rem 0 0.65rem;
}

.page-contact .contact-lead {
  margin: 0;
  max-width: 34em;
  color: var(--c-muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* ---------- 三处渠道 ---------- */
.page-contact .contact-channels {
  display: grid;
  gap: 1rem;
}

@media (min-width: 880px) {
  .page-contact .contact-channels {
    grid-template-columns: 1.5fr 1.1fr 1fr;
    gap: 1.25rem;
    align-items: stretch;
  }
}

.page-contact .channel {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: var(--pc-pad);
  background: var(--c-band);
  border-left: 3px solid var(--c-cyan);
  border-radius: var(--pc-radius);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .channel:hover {
  background: #172b23;
}

.page-contact .channel--sub {
  border-left-color: var(--c-gold);
}

.page-contact .channel h3 {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.page-contact .channel-addr {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.78rem, 3.2vw, 0.9375rem);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--c-cyan);
  overflow-wrap: anywhere;
}

.page-contact .channel-addr--tel {
  font-size: clamp(1.02rem, 3vw, 1.5rem);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.page-contact .channel-text {
  margin: 0;
  color: var(--c-muted);
  font-size: 0.875rem;
  line-height: 1.78;
}

.page-contact .channel-meta {
  margin: auto 0 0;
  padding-top: 0.6rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--c-sand);
}

/* ---------- 写信前的准备 ---------- */
.page-contact .prep-grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
}

@media (min-width: 900px) {
  .page-contact .prep-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.75fr);
    align-items: start;
  }
}

.page-contact .prep-copy h2 {
  font-size: clamp(1.4rem, 3.8vw, 2.05rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 0.4rem 0 0;
}

.page-contact .prep-list {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .prep-item:first-child {
  border-top: 1px solid var(--c-line);
}

.page-contact .prep-idx {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  letter-spacing: 0.06em;
  color: var(--c-sand);
  padding-top: 0.15rem;
}

.page-contact .prep-item h3 {
  grid-column: 2;
  grid-row: 1;
  margin: 0 0 0.3rem;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.page-contact .prep-item p {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  color: var(--c-muted);
  font-size: 0.875rem;
  line-height: 1.8;
}

.page-contact .prep-visual {
  margin: 0;
}

.page-contact .prep-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--c-line);
  border-radius: 24px 4px 24px 4px;
}

/* ---------- 咨询类型选择器 ---------- */
.page-contact .picker {
  position: relative;
}

.page-contact .picker-tabs {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-contact .picker-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-contact .picker-tab {
  display: inline-block;
  padding: 0.48rem 0.95rem;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
  color: var(--c-muted);
  cursor: pointer;
  user-select: none;
  transition: color 0.16s var(--ease), background-color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-contact .picker-tab:hover {
  color: var(--c-paper);
  border-color: var(--c-mist);
}

.page-contact .picker-input:focus-visible + .picker-tab {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-contact .picker:has(#ct-sub:checked) .picker-tab[for="ct-sub"],
.page-contact .picker:has(#ct-data:checked) .picker-tab[for="ct-data"],
.page-contact .picker:has(#ct-acc:checked) .picker-tab[for="ct-acc"],
.page-contact .picker:has(#ct-exp:checked) .picker-tab[for="ct-exp"],
.page-contact .picker:has(#ct-coop:checked) .picker-tab[for="ct-coop"] {
  color: var(--c-ink);
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  font-weight: 700;
}

.page-contact .picker-panels {
  margin-top: 1.1rem;
}

.page-contact .picker-panel {
  display: grid;
  gap: 0.75rem;
  padding: var(--pc-pad);
  background: var(--c-band);
  border-left: 3px solid var(--c-cyan);
  border-radius: var(--pc-radius);
}

.page-contact .picker:has(#ct-sub:checked) .picker-panel:not([data-type="sub"]),
.page-contact .picker:has(#ct-data:checked) .picker-panel:not([data-type="data"]),
.page-contact .picker:has(#ct-acc:checked) .picker-panel:not([data-type="acc"]),
.page-contact .picker:has(#ct-exp:checked) .picker-panel:not([data-type="exp"]),
.page-contact .picker:has(#ct-coop:checked) .picker-panel:not([data-type="coop"]) {
  display: none;
}

.page-contact .picker-panel h3 {
  margin: 0;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.page-contact .panel-facts {
  margin: 0;
  display: grid;
  gap: 0.6rem;
}

.page-contact .panel-facts dt {
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--c-muted);
}

.page-contact .panel-facts dd {
  margin: 0.18rem 0 0;
  color: var(--c-paper);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.page-contact .panel-facts dd.is-cyan {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--c-cyan);
  overflow-wrap: anywhere;
}

@media (min-width: 620px) {
  .page-contact .panel-facts > div {
    display: grid;
    grid-template-columns: 5.5rem minmax(0, 1fr);
    gap: 0.9rem;
    align-items: baseline;
  }

  .page-contact .panel-facts dd {
    margin: 0;
  }
}

/* ---------- 回复节奏 ---------- */
.page-contact .time-grid {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.4rem);
}

@media (min-width: 860px) {
  .page-contact .time-grid {
    grid-template-columns: 15rem minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 5vw, 3.5rem);
  }
}

.page-contact .time-figure {
  display: block;
}

.page-contact .time-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 7vw, 2.85rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-cyan);
}

.page-contact .time-label {
  display: block;
  margin-top: 0.55rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--c-muted);
}

.page-contact .tick-rule {
  margin-top: 1rem;
  height: 20px;
  border-bottom: 1px solid var(--c-line);
  background-image: repeating-linear-gradient(to right, var(--c-line) 0 1px, transparent 1px 13px);
  background-repeat: repeat-x;
  background-position: bottom left;
  background-size: 100% 9px;
}

.page-contact .time-copy h2 {
  font-size: clamp(1.4rem, 3.8vw, 2.05rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 0;
}

.page-contact .time-list {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-contact .time-list li {
  display: grid;
  gap: 0.2rem;
  padding-left: 0.95rem;
  border-left: 2px solid var(--c-line);
  color: var(--c-muted);
  font-size: 0.9rem;
  line-height: 1.8;
}

.page-contact .time-key {
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--c-sand);
}

/* ---------- 合作共建 ---------- */
.page-contact .coop-band {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.4rem);
  padding: clamp(1.3rem, 4vw, 2.2rem);
  background: linear-gradient(135deg, #10201a 0%, #0b1712 100%);
  border: 1px solid var(--c-line);
  border-radius: 6px 30px 6px 30px;
}

@media (min-width: 860px) {
  .page-contact .coop-band {
    grid-template-columns: 14rem minmax(0, 1fr);
    align-items: center;
  }
}

.page-contact .coop-stats {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.page-contact .coop-stats > div {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.page-contact .coop-num {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  line-height: 1;
  color: var(--c-cyan);
}

.page-contact .coop-unit {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--c-muted);
}

.page-contact .coop-copy h2 {
  font-size: clamp(1.35rem, 3.6vw, 1.95rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0.4rem 0 0.7rem;
}

.page-contact .coop-copy p {
  margin: 0 0 0.7rem;
  max-width: 36em;
  color: var(--c-muted);
  font-size: 0.9rem;
  line-height: 1.85;
}

.page-contact .coop-mail {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--c-cyan);
  overflow-wrap: anywhere;
}

.page-contact .coop-more {
  margin-bottom: 0;
  font-size: 0.8125rem;
}

/* ---------- 正式信息 ---------- */
.page-contact .formal-block {
  position: relative;
  padding: clamp(1.3rem, 4vw, 2.2rem);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: 4px;
}

.page-contact .formal-block::before,
.page-contact .formal-block::after {
  content: "";
  position: absolute;
  top: -1px;
  width: 3px;
  height: 26px;
  background: var(--c-cyan);
}

.page-contact .formal-block::before {
  left: 12%;
}

.page-contact .formal-block::after {
  right: 12%;
  background: var(--c-gold);
}

.page-contact .formal-block h2 {
  font-size: clamp(1.3rem, 3.6vw, 1.85rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0.4rem 0 0;
}

.page-contact .formal-grid {
  display: grid;
  gap: 1rem;
  margin: 1.1rem 0 0;
}

@media (min-width: 760px) {
  .page-contact .formal-grid {
    grid-template-columns: 1.5fr 1.1fr 0.9fr;
    gap: 1.5rem;
  }
}

.page-contact .formal-grid dt {
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--c-muted);
}

.page-contact .formal-grid dd {
  margin: 0.3rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-paper);
}

.page-contact .formal-icp {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--c-muted);
}

.page-contact .formal-note {
  margin: 1.2rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--c-line);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--c-muted);
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 420px) {
  .page-contact .channel-addr--tel {
    font-size: 1.02rem;
    letter-spacing: 0.01em;
  }

  .page-contact .picker-tab {
    padding: 0.44rem 0.8rem;
    font-size: 0.78125rem;
  }

  .page-contact .prep-item {
    grid-template-columns: 2.2rem minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .picker-tab,
  .page-contact a {
    transition: none;
  }
}