.page-contact {
  --pc-line: rgba(14, 42, 36, .16);
  --pc-line-soft: rgba(14, 42, 36, .09);
  --pc-line-light: rgba(246, 241, 228, .18);
  background: var(--cream-paper);
  color: var(--slate-ink);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  background: var(--cream-paper);
  padding-block: clamp(26px, 4vw, 46px) clamp(30px, 5vw, 58px);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(20px, 3vw, 34px);
}

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

.page-contact h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(31px, 5.2vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.025em;
  color: var(--ink-pitch);
}

.page-contact .contact-hero__intro {
  margin: 14px 0 0;
  max-width: 40ch;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
  color: var(--slate-ink);
}

.page-contact .contact-hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}

.page-contact .contact-hero__meta .meta-cell {
  background: var(--cold-white);
  padding: 14px 15px;
}

.page-contact .contact-hero__meta dt {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--slate-ink);
  opacity: .78;
}

.page-contact .contact-hero__meta dd {
  margin: 7px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.7vw, 18px);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--ink-pitch);
}

/* ---------- 章节通用 ---------- */
.page-contact h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.1vw, 36px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.018em;
  color: var(--ink-pitch);
}

.page-contact .chapter-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .chapter-head__body p {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-ink);
}

.page-contact .chapter-head--light h2 { color: var(--cream-paper); }
.page-contact .chapter-head--light .chapter-head__body p { color: var(--muted-cyan); }
.page-contact .chapter-head--light .chapter-no { color: var(--pulse-cyan); }

/* ---------- 通道 + 响应时段 ---------- */
.page-contact .contact-channel {
  background: var(--cold-white);
  padding-block: clamp(30px, 4.5vw, 56px);
}

.page-contact .chan-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  align-items: start;
}

@media (min-width: 940px) {
  .page-contact .chan-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.page-contact .chan-col {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-contact .chan {
  position: relative;
  background: var(--cream-paper);
  border: 1px solid var(--pc-line);
  border-top: 3px solid var(--ink-pitch);
  box-shadow: var(--shadow-paper);
  padding: clamp(18px, 2.4vw, 26px);
}

.page-contact .chan__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.page-contact .chan__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--signal-orange);
}

.page-contact .chan__title {
  margin: 0 0 8px;
  font-size: clamp(19px, 2.1vw, 25px);
  font-weight: 600;
  letter-spacing: -.012em;
  color: var(--ink-pitch);
}

.page-contact .chan__text {
  margin: 0 0 16px;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-ink);
}

.page-contact .contact-copy {
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-contact .contact-copy:hover,
.page-contact .contact-copy:focus-visible {
  border-color: var(--pulse-cyan);
  box-shadow: 0 0 0 2px rgba(33, 230, 193, .22);
}

/* 响应时段面板 */
.page-contact .resp-panel {
  position: relative;
  overflow: hidden;
  background: var(--ink-pitch);
  color: var(--cream-paper);
  border-left: 4px solid var(--pulse-cyan);
  box-shadow: var(--shadow-paper-strong);
  padding: clamp(20px, 3vw, 32px);
}

.page-contact .resp-panel::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -18%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(33, 230, 193, .24), transparent 68%);
  pointer-events: none;
}

.page-contact .resp-panel__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--pulse-cyan);
}

.page-contact .resp-panel__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(32px, 4.6vw, 46px);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
  color: var(--cream-paper);
}

.page-contact .resp-panel__note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted-cyan);
}

.page-contact .resp-scale {
  list-style: none;
  position: relative;
  margin: 24px 0 0;
  padding: 0 0 0 20px;
  display: grid;
  gap: 15px;
}

.page-contact .resp-scale::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--pulse-cyan), var(--signal-orange));
  opacity: .65;
}

.page-contact .resp-scale__item {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-contact .resp-scale__dot {
  position: absolute;
  left: -20px;
  top: .5em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--pulse-cyan);
  box-shadow: 0 0 0 3px rgba(33, 230, 193, .18);
}

.page-contact .resp-scale__t {
  min-width: 54px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--pulse-cyan);
}

.page-contact .resp-scale__d {
  font-size: 15px;
  line-height: 1.6;
  color: var(--cream-paper);
  opacity: .92;
}

.page-contact .resp-panel__foot {
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--pc-line-light);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted-cyan);
}

.page-contact .hint {
  position: relative;
  cursor: help;
  color: var(--cream-paper);
  border-bottom: 1px dashed var(--pulse-cyan);
}

.page-contact .hint::after {
  content: attr(data-hint);
  position: absolute;
  left: 0;
  bottom: calc(100% + 8px);
  z-index: 4;
  white-space: nowrap;
  padding: 5px 9px;
  background: var(--cold-white);
  color: var(--ink-pitch);
  font-size: 12px;
  line-height: 1.4;
  border: 1px solid var(--pc-line);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .18s var(--ease), transform .18s var(--ease);
  pointer-events: none;
}

.page-contact .hint:hover::after,
.page-contact .hint:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 按类型提交 ---------- */
.page-contact .contact-type {
  background: var(--cream-paper);
  padding-block: clamp(30px, 4.5vw, 56px);
}

.page-contact .type-figure {
  margin: 0 0 clamp(22px, 3vw, 34px);
}

.page-contact .type-figure .media-frame,
.page-contact .visit-figure .media-frame {
  aspect-ratio: 12 / 7;
  overflow: hidden;
  border: 1px solid var(--pc-line);
  background: var(--cold-white);
}

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

.page-contact .type-figure__cap,
.page-contact .visit-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: .01em;
  color: var(--slate-ink);
  opacity: .82;
}

.page-contact .fb-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 2vw, 18px);
}

@media (min-width: 760px) {
  .page-contact .fb-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .fb-card {
  background: var(--cold-white);
  border: 1px solid var(--pc-line);
  border-left: 4px solid var(--pulse-cyan);
  box-shadow: var(--shadow-paper);
}

.page-contact .fb-card:nth-child(2n) {
  border-left-color: var(--signal-orange);
}

.page-contact .fb-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-contact .fb-card__head::-webkit-details-marker { display: none; }
.page-contact .fb-card__head::marker { content: ""; }

.page-contact .fb-card__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--signal-orange);
}

.page-contact .fb-card__title {
  flex: 1 1 auto;
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 600;
  letter-spacing: -.012em;
  color: var(--ink-pitch);
  transition: color .18s var(--ease);
}

.page-contact .fb-card__head:hover .fb-card__title { color: var(--panel-teal); }

.page-contact .fb-card__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
}

.page-contact .fb-card__mark::before,
.page-contact .fb-card__mark::after {
  content: "";
  position: absolute;
  background: var(--ink-pitch);
  transition: transform .2s var(--ease), opacity .2s var(--ease), background .2s var(--ease);
}

.page-contact .fb-card__mark::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-contact .fb-card__mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-contact .fb-card[open] .fb-card__mark::before,
.page-contact .fb-card[open] .fb-card__mark::after {
  background: var(--pulse-cyan);
}

.page-contact .fb-card[open] .fb-card__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-contact .fb-card__body {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--pc-line-soft);
  animation: pc-contact-fb-in .24s var(--ease);
}

@keyframes pc-contact-fb-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-contact .fb-card__lead {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate-ink);
}

.page-contact .fb-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .fb-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-pitch);
}

.page-contact .fb-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 8px;
  height: 2px;
  background: var(--pulse-cyan);
}

.page-contact .fb-card__foot {
  margin: 0;
  padding-top: 11px;
  border-top: 1px dashed var(--pc-line-soft);
  font-size: 13px;
  line-height: 1.72;
  color: var(--slate-ink);
  opacity: .84;
}

/* ---------- 投稿与合作 ---------- */
.page-contact .contact-collab {
  background: var(--ink-pitch);
  padding-block: clamp(32px, 5vw, 62px);
}

.page-contact .collab-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 24px);
}

@media (min-width: 860px) {
  .page-contact .collab-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .collab-card {
  background: var(--panel-teal);
  border: 1px solid var(--pc-line-light);
  border-top: 3px solid var(--pulse-cyan);
  padding: clamp(18px, 2.4vw, 28px);
}

.page-contact .collab-card--alt {
  border-top-color: var(--signal-orange);
}

.page-contact .collab-card h3 {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.1vw, 24px);
  font-weight: 600;
  letter-spacing: -.012em;
  color: var(--cream-paper);
}

.page-contact .collab-card p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted-cyan);
}

.page-contact .collab-steps {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .collab-steps li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cream-paper);
}

.page-contact .collab-steps .num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--pulse-cyan);
}

.page-contact .collab-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .collab-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cream-paper);
}

.page-contact .collab-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 8px;
  height: 2px;
  background: var(--signal-orange);
}

.page-contact .collab-note {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--pc-line-light);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted-cyan);
}

.page-contact .collab-link {
  margin: clamp(18px, 3vw, 26px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted-cyan);
}

.page-contact .collab-link a {
  color: var(--pulse-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color .18s var(--ease);
}

.page-contact .collab-link a:hover { color: var(--amber-soft); }

/* ---------- 线下联络 ---------- */
.page-contact .contact-visit {
  background: var(--cold-white);
  padding-block: clamp(30px, 4.5vw, 56px);
}

.page-contact .visit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  align-items: start;
}

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

.page-contact .visit-label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--signal-orange);
}

.page-contact .visit-addr {
  margin: 0 0 16px;
  max-width: 26ch;
  font-size: clamp(18px, 2.1vw, 23px);
  font-weight: 600;
  line-height: 1.62;
  letter-spacing: -.008em;
  color: var(--ink-pitch);
}

.page-contact .visit-meta {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--pc-line-soft);
  display: grid;
  gap: 13px;
}

.page-contact .visit-meta dt {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--slate-ink);
  opacity: .78;
}

.page-contact .visit-meta dd {
  margin: 5px 0 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--ink-pitch);
}

.page-contact .visit-figure {
  margin: 0;
}

/* ---------- 收束 ---------- */
.page-contact .contact-outro {
  background: var(--cream-paper);
  padding-block: clamp(28px, 4vw, 48px);
}

.page-contact .contact-outro__inner {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

@media (min-width: 780px) {
  .page-contact .contact-outro__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
  }
}

.page-contact .contact-outro__eyebrow {
  margin: 0 0 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--signal-orange);
}

.page-contact .contact-outro__text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--slate-ink);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    animation: none !important;
    transition: none !important;
  }
}
</main>