.page-contact {
  background: var(--ink-900);
  color: var(--text);
  overflow-x: hidden;
}

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

/* ---------- Hero ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  border-bottom: var(--hairline);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -22%;
  width: min(860px, 118%);
  height: 150%;
  background: linear-gradient(135deg, rgba(18, 58, 90, .85) 0%, rgba(14, 42, 68, .35) 55%, rgba(7, 26, 43, 0) 100%);
  clip-path: polygon(34% 0%, 100% 0%, 100% 100%, 0% 100%);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan-start), var(--gold) 46%, var(--signal) 100%);
  opacity: .72;
  pointer-events: none;
}

.page-contact .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.75rem, 5vw, 3rem);
  padding-block: clamp(2rem, 6vw, 4.25rem);
}

.page-contact .hero-copy h1 {
  margin: .85rem 0 0;
  font-size: clamp(1.85rem, 6.4vw, 3.35rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.02em;
}

.page-contact .hero-copy .lede {
  margin: 1.1rem 0 0;
  max-width: 48ch;
  color: var(--text-dim);
  font-size: clamp(.95rem, 2.4vw, 1.05rem);
  line-height: 1.85;
}

.page-contact .hero-status {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-contact .status-pill {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .09em;
  line-height: 1.4;
  padding: .42rem .72rem;
  border: var(--hairline);
  border-radius: var(--radius);
  background: rgba(7, 26, 43, .72);
  color: var(--text-dim);
}

.page-contact .status-pill--live {
  border-color: rgba(255, 107, 53, .55);
  background: rgba(255, 107, 53, .08);
  color: var(--signal);
}

.page-contact .hero-visual {
  margin: 0;
  padding: .5rem;
  border: var(--hairline);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(18, 58, 90, .6), rgba(10, 33, 55, .9));
  box-shadow: 0 18px 42px rgba(3, 12, 22, .45);
}

.page-contact .hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  object-fit: cover;
}

/* ---------- 联系渠道 + 反馈矩阵 ---------- */

.page-contact .contact-layout {
  display: grid;
  gap: clamp(1.75rem, 4.5vw, 3rem);
  padding-block: clamp(2.25rem, 6vw, 3.75rem);
}

.page-contact .aside-head .eyebrow {
  margin: 0;
}

.page-contact .aside-head h2 {
  margin: .5rem 0 .7rem;
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  line-height: 1.25;
  letter-spacing: -.015em;
}

.page-contact .aside-note {
  margin: 0;
  color: var(--text-dim);
  font-size: .88rem;
  line-height: 1.85;
}

.page-contact .channel-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  border-top: var(--hairline);
}

.page-contact .channel-row {
  display: grid;
  gap: .35rem;
  padding: 1rem 0;
  border-bottom: var(--hairline);
}

.page-contact .channel-key {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .channel-value {
  font-family: var(--font-mono);
  font-size: .95rem;
  line-height: 1.55;
  color: var(--text);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-value--addr {
  font-family: var(--font-sans);
  font-size: .9rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .copy-btn {
  justify-self: start;
  margin-top: .35rem;
  padding: .38rem .7rem;
  border: var(--hairline-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .copy-btn:hover {
  color: var(--gold);
  border-color: rgba(214, 161, 91, .55);
}

.page-contact .copy-btn[data-copied] {
  color: var(--pitch);
  border-color: rgba(31, 138, 112, .6);
  background: rgba(31, 138, 112, .12);
}

.page-contact .duty-card {
  margin-top: 1.5rem;
  padding: 1.25rem 1.15rem;
  border: var(--hairline-strong);
  border-left: 2px solid var(--gold);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(18, 58, 90, .85), rgba(10, 33, 55, .95));
}

.page-contact .duty-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-contact .duty-hours {
  display: block;
  margin: .4rem 0 .7rem;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 4.6vw, 1.7rem);
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .duty-text {
  margin: 0;
  font-size: .84rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* 反馈矩阵 */

.page-contact .section-head {
  margin-bottom: clamp(1.25rem, 3.5vw, 1.9rem);
}

.page-contact .section-head h2 {
  margin: .5rem 0 .65rem;
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  line-height: 1.25;
  letter-spacing: -.015em;
}

.page-contact .section-head p {
  margin: 0;
  max-width: 62ch;
  color: var(--text-dim);
  font-size: .9rem;
  line-height: 1.85;
}

.page-contact .feedback-matrix {
  display: grid;
  gap: .9rem;
}

.page-contact .fb-card {
  position: relative;
  padding: 1.4rem 1.1rem 1.2rem;
  border: var(--hairline);
  border-radius: var(--radius);
  background: rgba(14, 42, 68, .5);
  overflow: hidden;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .fb-card:hover {
  border-color: rgba(214, 161, 91, .42);
  background: rgba(18, 58, 90, .6);
}

.page-contact .fb-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan-start), var(--cyan-end));
  opacity: .8;
}

.page-contact .fb-card:nth-child(2)::after {
  background: linear-gradient(90deg, var(--cyan-end), var(--gold));
}

.page-contact .fb-card:nth-child(3)::after {
  background: linear-gradient(90deg, var(--gold), var(--signal));
}

.page-contact .fb-index {
  position: absolute;
  top: .4rem;
  right: .7rem;
  font-family: var(--font-mono);
  font-size: 2.3rem;
  line-height: 1;
  color: rgba(159, 179, 200, .13);
  pointer-events: none;
}

.page-contact .fb-tag {
  display: inline-block;
  margin: 0 0 .6rem;
  padding: .28rem .6rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  border: var(--hairline);
  border-radius: var(--radius);
  color: var(--text-dim);
}

.page-contact .fb-tag--schedule {
  color: var(--cyan-start);
  border-color: rgba(45, 212, 191, .45);
}

.page-contact .fb-tag--stats {
  color: var(--gold);
  border-color: rgba(214, 161, 91, .45);
}

.page-contact .fb-tag--map {
  color: var(--signal);
  border-color: rgba(255, 107, 53, .45);
}

.page-contact .fb-card h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-contact .fb-desc {
  margin: .6rem 0 0;
  font-size: .84rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .fb-materials {
  list-style: none;
  margin: .95rem 0 0;
  padding: .85rem 0 0;
  border-top: var(--hairline);
  display: grid;
  gap: .4rem;
}

.page-contact .fb-materials li {
  position: relative;
  padding-left: 1rem;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--text);
}

.page-contact .fb-materials li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--gold);
  transform: translateY(-50%);
}

.page-contact .feedback-visual {
  margin: 1.4rem 0 0;
  padding: .45rem;
  border: var(--hairline);
  border-radius: var(--radius);
  background: rgba(10, 33, 55, .7);
}

.page-contact .feedback-visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  object-fit: cover;
}

.page-contact .feedback-visual figcaption {
  margin-top: .6rem;
  padding: 0 .4rem .35rem;
  font-size: .78rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .fb-foot {
  margin: 1rem 0 0;
  font-size: .86rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .fb-foot a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(214, 161, 91, .45);
}

.page-contact .fb-foot a:hover {
  color: var(--text);
  border-bottom-color: var(--text);
}

/* ---------- 合作咨询 ---------- */

.page-contact .section--coop {
  border-top: var(--hairline);
  border-bottom: var(--hairline);
  background: linear-gradient(180deg, rgba(14, 42, 68, .55), rgba(7, 26, 43, 0) 78%);
}

.page-contact .coop-grid {
  display: grid;
  gap: .9rem;
}

.page-contact .coop-card {
  padding: 1.2rem 1.05rem;
  border: var(--hairline);
  border-top: 2px solid rgba(214, 161, 91, .7);
  border-radius: var(--radius);
  background: rgba(7, 26, 43, .65);
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .coop-card:nth-child(2) {
  border-top-color: rgba(45, 212, 191, .7);
}

.page-contact .coop-card:nth-child(3) {
  border-top-color: rgba(255, 107, 53, .7);
}

.page-contact .coop-card:nth-child(4) {
  border-top-color: rgba(31, 138, 112, .8);
}

.page-contact .coop-card:hover {
  transform: translateY(-3px);
  border-color: rgba(159, 179, 200, .3);
  border-top-color: inherit;
}

.page-contact .coop-card h3 {
  margin: 0 0 .55rem;
  font-size: .98rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-contact .coop-card p {
  margin: 0;
  font-size: .84rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .coop-cta {
  margin-top: 1.5rem;
  padding-top: 1.4rem;
  border-top: var(--hairline);
  display: grid;
  gap: 1rem;
}

.page-contact .coop-cta p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-contact .coop-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

/* ---------- 处理节奏 ---------- */

.page-contact .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.35rem;
}

.page-contact .tl-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.3rem;
  height: 2.3rem;
  border: var(--hairline-strong);
  border-radius: 50%;
  background: var(--ink-900);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-contact .tl-item h3 {
  margin: .7rem 0 .4rem;
  font-size: .98rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-contact .tl-item p {
  margin: 0;
  font-size: .84rem;
  line-height: 1.82;
  color: var(--text-dim);
}

.page-contact .related-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .7rem 1.4rem;
  margin-top: clamp(1.75rem, 4.5vw, 2.75rem);
  padding-top: clamp(1.25rem, 3.5vw, 1.75rem);
  border-top: var(--hairline);
}

.page-contact .related-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .related-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 1.4rem;
}

.page-contact .related-list a {
  font-size: .86rem;
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .related-list a:hover {
  color: var(--text);
  border-bottom-color: var(--gold);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .feedback-matrix {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  }

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

  .page-contact .coop-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 1.5rem;
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 4rem);
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(290px, 360px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 4.5vw, 3.5rem);
  }
}

@media (min-width: 1040px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .timeline {
    position: relative;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .page-contact .timeline::before {
    content: "";
    position: absolute;
    top: 1.15rem;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan-start), var(--gold) 55%, var(--signal));
    opacity: .5;
  }

  .page-contact .tl-item {
    position: relative;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-btn,
  .page-contact .coop-card,
  .page-contact .fb-card,
  .page-contact .related-list a {
    transition: none;
  }

  .page-contact .coop-card:hover {
    transform: none;
  }
}