.page-contact {
  --desk-line: rgba(7, 13, 31, 0.16);
  --desk-dim: rgba(7, 13, 31, 0.66);
  display: block;
}

.page-contact a:focus-visible,
.page-contact button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-block: clamp(24px, 4vw, 52px) clamp(28px, 5vw, 60px);
}

.page-contact .hero-split {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

.page-contact .hero-copy .eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
  letter-spacing: 0.2em;
  font-size: 12px;
}

.page-contact .hero-copy h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 6vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: 0.03em;
  color: var(--ivory);
}

.page-contact .hero-copy .lede {
  margin: 0;
  max-width: 34em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--rock);
}

.page-contact .hero-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
}

.page-contact .hero-visual {
  margin: 0;
  padding: 10px;
  background: var(--night);
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-contact .hero-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

/* ---------- 合作方向 ---------- */
.page-contact .direction-board {
  padding-block: clamp(30px, 5vw, 66px);
}

.page-contact .board-grid {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-contact .board-rail .eyebrow {
  margin: 0;
  color: var(--clay);
  letter-spacing: 0.2em;
  font-size: 12px;
}

.page-contact .board-rail h2 {
  margin: 8px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.6vw, 2.05rem);
  line-height: 1.25;
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.page-contact .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 3px;
}

.page-contact .rail-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 16px;
  border-left: 2px solid var(--cyan-line);
  background: linear-gradient(90deg, rgba(42, 27, 74, 0.6), rgba(14, 24, 48, 0));
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  color: var(--ivory);
  font-size: 14px;
  letter-spacing: 0.03em;
}

.page-contact .rail-item .mono {
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.page-contact .rail-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--rock);
  max-width: 30em;
}

.page-contact .board-main .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.page-contact .board-main .filter-btn {
  font: inherit;
  font-size: 13px;
  letter-spacing: 0.03em;
  padding: 7px 14px 7px 12px;
  color: var(--rock);
  background: rgba(14, 24, 48, 0.8);
  border: 1px solid var(--line-strong);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  transition: color var(--dur) ease, border-color var(--dur) ease, background var(--dur) ease;
}

.page-contact .board-main .filter-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .board-main .filter-btn[aria-pressed="true"] {
  color: var(--void);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .board-main .filter-count {
  font-size: 12px;
  color: var(--rock);
  letter-spacing: 0.06em;
  margin-left: auto;
}

.page-contact .scene-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .scene {
  padding: 18px 20px;
  background: rgba(14, 24, 48, 0.82);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-sm)), calc(100% - var(--cut-sm)) 100%, 0 100%);
}

.page-contact .scene h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.page-contact .scene p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--rock);
}

.page-contact .board-visual {
  margin: 22px 0 0;
  background: var(--night);
  border: 1px solid var(--line);
}

.page-contact .board-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .board-visual figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--rock);
}

/* ---------- 联系渠道与回复节奏 ---------- */
.page-contact .desk {
  padding-block: clamp(30px, 5vw, 66px);
}

.page-contact .desk-grid {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-contact .desk-panel {
  padding: clamp(20px, 3vw, 34px);
  background: var(--ivory);
  color: var(--void);
  border: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-contact .desk-panel .eyebrow {
  margin: 0;
  color: var(--clay);
  letter-spacing: 0.2em;
  font-size: 12px;
}

.page-contact .desk-panel h2 {
  margin: 8px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.6vw, 1.95rem);
  letter-spacing: 0.04em;
  color: var(--void);
}

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .channel {
  padding: 15px 0;
  border-top: 1px solid var(--desk-line);
}

.page-contact .channel:first-child {
  padding-top: 0;
  border-top: none;
}

.page-contact .channel-label {
  margin: 0 0 5px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--desk-dim);
}

.page-contact .channel-value {
  margin: 0 0 6px;
  font-size: clamp(14px, 2vw, 17px);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--void);
  overflow-wrap: anywhere;
  word-break: break-all;
}

.page-contact .channel-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--desk-dim);
}

.page-contact .desk-side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .clock-card,
.page-contact .theme-card {
  padding: clamp(18px, 2.6vw, 26px);
  background: linear-gradient(160deg, rgba(42, 27, 74, 0.88), rgba(14, 24, 48, 0.92));
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-sm)), calc(100% - var(--cut-sm)) 100%, 0 100%);
}

.page-contact .clock-card h2,
.page-contact .theme-card h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.8vw, 1.5rem);
  letter-spacing: 0.05em;
  color: var(--ivory);
}

.page-contact .day-track {
  position: relative;
  height: 10px;
  background: rgba(170, 180, 195, 0.16);
  overflow: hidden;
}

.page-contact .day-span {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  width: 37.5%;
  background: linear-gradient(90deg, rgba(66, 232, 209, 0.9), rgba(244, 196, 94, 0.95));
  box-shadow: var(--glow-cyan);
}

.page-contact .day-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--rock);
}

.page-contact .clock-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--rock);
}

.page-contact .theme-card > p {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--rock);
}

.page-contact .theme-list {
  list-style: none;
  margin: 0 0 10px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .theme-key {
  padding: 8px 12px;
  background: rgba(66, 232, 209, 0.1);
  border: 1px dashed var(--cyan-line);
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.04em;
  user-select: all;
  -webkit-user-select: all;
}

.page-contact .theme-hint {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--rock);
}

/* ---------- 通信地址与纠错流程 ---------- */
.page-contact .addr-fix {
  padding-block: clamp(30px, 5vw, 66px);
}

.page-contact .addr-grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-contact .addr-panel .eyebrow {
  margin: 0;
  color: var(--clay);
  letter-spacing: 0.2em;
  font-size: 12px;
}

.page-contact .addr-panel h2,
.page-contact .fix-panel h2 {
  margin: 8px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3.4vw, 1.9rem);
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.page-contact .addr-line {
  margin: 0 0 16px;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
  font-size: clamp(15px, 2vw, 18px);
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-contact .addr-panel p {
  margin: 0 0 12px;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--rock);
}

.page-contact .addr-panel .addr-meta {
  margin: 18px 0 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--rock);
}

.page-contact .fix-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .fix-step {
  position: relative;
  padding: 16px 18px 16px 56px;
  background: rgba(14, 24, 48, 0.84);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-sm)), calc(100% - var(--cut-sm)) 100%, 0 100%);
}

.page-contact .fix-step .mono {
  position: absolute;
  left: 18px;
  top: 17px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-contact .fix-step h3 {
  margin: 0 0 4px;
  font-size: 15px;
  letter-spacing: 0.03em;
  color: var(--ivory);
}

.page-contact .fix-step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--rock);
}

/* ---------- 延伸阅读 ---------- */
.page-contact .link-rail-section {
  padding-block: clamp(26px, 4vw, 54px) clamp(36px, 5vw, 68px);
}

.page-contact .link-rail-section h2 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  letter-spacing: 0.04em;
  color: var(--ivory);
}

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

.page-contact .link-rail a {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  color: var(--ivory);
  text-decoration: none;
  font-size: 15px;
  letter-spacing: 0.03em;
  transition: color var(--dur) ease, padding-left var(--dur) ease;
}

.page-contact .link-rail a span {
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--rock);
}

.page-contact .link-rail a:hover {
  color: var(--cyan);
  padding-left: 12px;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-contact .hero-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
  }

  .page-contact .board-grid {
    grid-template-columns: minmax(0, 0.34fr) minmax(0, 0.66fr);
    align-items: start;
  }

  .page-contact .board-rail {
    position: sticky;
    top: 96px;
  }

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

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

  .page-contact .addr-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-contact .link-rail a {
    justify-content: flex-start;
  }
}

@media (min-width: 1180px) {
  .page-contact .board-grid {
    grid-template-columns: minmax(0, 0.3fr) minmax(0, 0.7fr);
    gap: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .link-rail a,
  .page-contact .board-main .filter-btn {
    transition: none;
  }
}