.page-contact {
  --pc-line: 2px solid var(--black);
  --pc-line-soft: 2px solid rgba(244, 237, 226, 0.24);
  --pc-ink-soft: #2b3038;
  --pc-accent: var(--red);
  background: var(--paper);
  color: var(--black);
  overflow-x: hidden;
}

.page-contact .pc-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--red);
}

.page-contact .pc-sec-idx {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--red);
  border-bottom: 2px solid var(--orange);
  padding-bottom: 4px;
  margin-bottom: 14px;
}

.page-contact .pc-sec-head {
  max-width: 46rem;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-contact .pc-sec-head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.18;
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}

.page-contact .pc-sec-sub {
  margin: 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--pc-ink-soft);
}

.page-contact .pc-sec-head--dark .pc-sec-idx {
  color: var(--gold);
}

.page-contact .pc-sec-head--dark .pc-sec-sub {
  color: rgba(244, 237, 226, 0.78);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  padding: clamp(36px, 6vw, 88px) 0 clamp(40px, 6vw, 80px);
  border-bottom: var(--pc-line);
  background:
    linear-gradient(180deg, rgba(226, 214, 195, 0.55) 0%, rgba(244, 237, 226, 0) 60%),
    var(--paper);
}

.page-contact .pc-hero-grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

.page-contact .pc-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5.2vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 0 0 20px;
}

.page-contact .pc-lead {
  margin: 0 0 26px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--pc-ink-soft);
  max-width: 34em;
}

.page-contact .pc-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-contact .pc-hero-figure {
  position: relative;
  border: var(--pc-line);
  background: var(--paper-deep);
  box-shadow: var(--hard-shadow);
  padding: 10px;
}

.page-contact .pc-hero-figure::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 30px;
  height: 30px;
  background: var(--orange);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
}

.page-contact .pc-hero-figure svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 入口卡 ---------- */
.page-contact .pc-entries {
  padding: clamp(48px, 7vw, 110px) 0 clamp(40px, 5vw, 72px);
}

.page-contact .pc-entry-grid {
  list-style: none;
  margin: 0 0 clamp(28px, 4vw, 44px);
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .pc-entry-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 30px 22px 24px;
  border: var(--pc-line);
  background: var(--paper);
  box-shadow: var(--hard-shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.page-contact .pc-entry-card::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 6px;
  background: var(--pc-accent);
}

.page-contact .pc-entry-card:nth-child(1) { --pc-accent: var(--red); }
.page-contact .pc-entry-card:nth-child(2) { --pc-accent: var(--orange); }
.page-contact .pc-entry-card:nth-child(3) { --pc-accent: var(--teal); }
.page-contact .pc-entry-card:nth-child(4) { --pc-accent: var(--ink); }

.page-contact .pc-entry-card:hover,
.page-contact .pc-entry-card:focus-within {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--red-deep);
}

.page-contact .pc-entry-card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.22rem;
  margin: 0;
  line-height: 1.3;
}

.page-contact .pc-entry-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--pc-ink-soft);
}

.page-contact .pc-coord {
  display: inline-block;
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 3px 8px;
  border: 2px solid var(--black);
  background: var(--black);
  color: var(--paper);
}

.page-contact .pc-coord--light {
  border-color: var(--gold);
  background: transparent;
  color: var(--gold);
}

.page-contact .pc-entry-route {
  margin-top: auto;
  font-size: 13px;
  line-height: 1.5;
  color: var(--red-deep);
  word-break: break-all;
}

.page-contact .pc-entry-link {
  align-self: flex-start;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  color: var(--black);
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
}

.page-contact .pc-entry-link:hover,
.page-contact .pc-entry-link:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

/* ---------- 详情清单 ---------- */
.page-contact .pc-details {
  border: var(--pc-line);
  background: var(--paper-deep);
}

.page-contact .pc-detail {
  display: grid;
  gap: 14px;
  padding: 24px 22px;
  border-top: var(--pc-line);
  scroll-margin-top: 110px;
}

.page-contact .pc-detail:first-child {
  border-top: 0;
}

.page-contact .pc-detail-head h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  margin: 10px 0 6px;
}

.page-contact .pc-detail-route {
  margin: 0;
  font-size: 13px;
  color: var(--red-deep);
  word-break: break-all;
}

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

.page-contact .pc-detail-list li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--pc-ink-soft);
}

.page-contact .pc-detail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 12px;
  height: 2px;
  background: var(--orange);
}

.page-contact .pc-detail-list li::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 0.28em;
  width: 2px;
  height: 12px;
  background: var(--orange);
}

/* ---------- 联系信息面板 ---------- */
.page-contact .pc-panel-sec {
  padding: 0 0 clamp(52px, 8vw, 120px);
  background: var(--paper);
}

.page-contact .pc-panel {
  position: relative;
  border: var(--pc-line);
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--hard-shadow-dark);
  padding: clamp(28px, 5vw, 56px);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-contact .pc-panel-bg {
  position: absolute;
  right: -90px;
  top: -70px;
  width: min(440px, 72%);
  height: auto;
  opacity: 0.15;
  pointer-events: none;
}

.page-contact .pc-panel-inner {
  position: relative;
  z-index: 1;
}

.page-contact .pc-panel-head {
  max-width: 40rem;
  margin-bottom: clamp(24px, 3.5vw, 40px);
}

.page-contact .pc-panel-head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.2vw, 2.3rem);
  margin: 0 0 12px;
  line-height: 1.2;
}

.page-contact .pc-panel-head .pc-sec-idx {
  color: var(--gold);
}

.page-contact .pc-panel-head p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(244, 237, 226, 0.78);
}

.page-contact .pc-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .pc-contact-item {
  display: grid;
  gap: 8px;
  padding: 20px;
  border: var(--pc-line-soft);
  background: rgba(11, 14, 18, 0.4);
}

.page-contact .pc-contact-label {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gray);
}

.page-contact .pc-contact-value {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.4vw, 1.35rem);
  line-height: 1.4;
  color: var(--gold);
  text-align: left;
  word-break: break-all;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: none;
}

.page-contact a.pc-contact-value:hover,
.page-contact a.pc-contact-value:focus-visible {
  color: var(--orange);
  text-decoration: underline;
}

.page-contact .pc-contact-value:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

.page-contact .pc-contact-text {
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .pc-contact-hint {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(244, 237, 226, 0.5);
}

/* ---------- 回复节奏 ---------- */
.page-contact .pc-rhythm {
  padding: clamp(52px, 8vw, 120px) 0;
  background: var(--paper);
}

.page-contact .pc-rhythm-figure {
  margin: 0 0 clamp(28px, 4vw, 48px);
  border: var(--pc-line);
  background: var(--paper-deep);
  box-shadow: var(--hard-shadow);
  overflow: hidden;
}

.page-contact .pc-rhythm-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .pc-rhythm-figure figcaption {
  padding: 12px 18px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--pc-ink-soft);
  border-top: var(--pc-line);
  background: var(--paper);
}

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

.page-contact .pc-rhythm-list li {
  padding: 22px 20px;
  border-left: 6px solid var(--red);
  background: var(--paper-deep);
}

.page-contact .pc-rhythm-list h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.08rem;
  margin: 0 0 8px;
}

.page-contact .pc-rhythm-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--pc-ink-soft);
}

/* ---------- 斜切过渡 ---------- */
.page-contact .pc-slant {
  height: clamp(36px, 6vw, 84px);
  background: var(--ink);
  clip-path: polygon(0 100%, 0 42%, 100% 0, 100% 100%);
}

/* ---------- 纠错流程 ---------- */
.page-contact .pc-flow {
  padding: clamp(40px, 5vw, 80px) 0 clamp(56px, 8vw, 120px);
  background: var(--ink);
  color: var(--paper);
}

.page-contact .pc-flow-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .pc-flow-node {
  position: relative;
  padding: 22px 20px 24px;
  border: var(--pc-line-soft);
  background: var(--ink-mid);
}

.page-contact .pc-flow-node::before {
  content: "";
  display: block;
  height: 8px;
  margin-bottom: 18px;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(244, 237, 226, 0.45) 0 2px,
    transparent 2px 9px
  );
}

.page-contact .pc-flow-num {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin-bottom: 10px;
}

.page-contact .pc-flow-node h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.14rem;
  margin: 0 0 10px;
  color: var(--paper);
}

.page-contact .pc-flow-node p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 237, 226, 0.78);
}

.page-contact .pc-flow-note {
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(244, 237, 226, 0.24);
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 237, 226, 0.82);
}

.page-contact .pc-flow-note .mono {
  color: var(--gold);
  word-break: break-all;
}

/* ---------- 合作准备 ---------- */
.page-contact .pc-partner {
  padding: clamp(52px, 8vw, 120px) 0;
  background: var(--paper);
}

.page-contact .pc-partner-grid {
  display: grid;
  gap: 18px;
}

.page-contact .pc-partner-main {
  position: relative;
  padding: 34px 24px 28px;
  border: var(--pc-line);
  background: var(--red);
  color: var(--paper);
  box-shadow: var(--hard-shadow);
}

.page-contact .pc-partner-main h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  margin: 14px 0 14px;
  line-height: 1.25;
}

.page-contact .pc-partner-main p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 237, 226, 0.88);
}

.page-contact .pc-partner-mail {
  margin: 0;
  font-size: clamp(0.95rem, 2vw, 1.2rem);
  color: var(--gold);
  word-break: break-all;
}

.page-contact .pc-partner-side {
  display: grid;
  gap: 14px;
}

.page-contact .pc-partner-card {
  position: relative;
  padding: 24px 20px 22px;
  border: var(--pc-line);
  background: var(--paper-deep);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.page-contact .pc-partner-card:hover,
.page-contact .pc-partner-card:focus-within {
  transform: translate(-3px, -3px);
  box-shadow: var(--hard-shadow);
}

.page-contact .pc-partner-card h4 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.04rem;
  margin: 12px 0 8px;
}

.page-contact .pc-partner-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--pc-ink-soft);
}

/* ---------- 常见提示 ---------- */
.page-contact .pc-tips {
  padding: clamp(48px, 7vw, 110px) 0 clamp(56px, 8vw, 120px);
  background: var(--paper-deep);
  border-top: var(--pc-line);
}

.page-contact .pc-tip-list {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(30px, 5vw, 52px);
}

.page-contact .pc-tip {
  border: var(--pc-line);
  background: var(--paper);
}

.page-contact .pc-tip summary {
  cursor: pointer;
  padding: 18px 20px 18px 46px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.5;
  position: relative;
  list-style: none;
}

.page-contact .pc-tip summary::-webkit-details-marker {
  display: none;
}

.page-contact .pc-tip summary::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 1.45em;
  width: 14px;
  height: 2px;
  background: var(--red);
}

.page-contact .pc-tip summary::after {
  content: "";
  position: absolute;
  left: 26px;
  top: 1.05em;
  width: 2px;
  height: 14px;
  background: var(--red);
  transition: opacity 0.18s ease;
}

.page-contact .pc-tip[open] summary::after {
  opacity: 0;
}

.page-contact .pc-tip summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -4px;
}

.page-contact .pc-tip p {
  margin: 0;
  padding: 0 20px 20px 46px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--pc-ink-soft);
}

.page-contact .pc-tips-foot {
  display: grid;
  gap: 20px;
  padding-top: clamp(24px, 4vw, 40px);
  border-top: 2px solid var(--black);
}

.page-contact .pc-tips-foot p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--pc-ink-soft);
  max-width: 40em;
}

.page-contact .pc-tips-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-contact .pc-entry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .pc-contact-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .pc-rhythm-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-flow-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-tips-foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 860px) {
  .page-contact .pc-hero-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-contact .pc-detail {
    grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
    padding: 28px 26px;
  }

  .page-contact .pc-partner-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-contact .pc-entry-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .pc-hero {
    padding-top: clamp(56px, 6vw, 104px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-entry-card,
  .page-contact .pc-partner-card {
    transition: none;
  }

  .page-contact .pc-tip summary::after {
    transition: none;
  }
}