.page-contact {
  --pc-radius: 22px;
  --pc-gap: clamp(1rem, 2.6vw, 1.75rem);
  --pc-paper-ink: var(--paper-ink);
  background: var(--ink-900);
  color: var(--mist);
  overflow-x: clip;
}

/* ---------- hero ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding-top: calc(var(--header-h) + 2.2rem);
  padding-bottom: clamp(2.6rem, 6vw, 4.5rem);
  overflow: hidden;
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-contact .contact-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 85% at 8% 0%, rgba(37, 230, 216, 0.2), transparent 60%),
    radial-gradient(85% 70% at 96% 16%, rgba(255, 61, 139, 0.17), transparent 62%),
    linear-gradient(180deg, rgba(7, 19, 31, 0.4) 0%, rgba(7, 19, 31, 0.88) 60%, var(--ink-900) 100%);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0 0 clamp(1.6rem, 4vw, 2.6rem);
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-contact .breadcrumb a {
  color: var(--link);
  text-decoration: none;
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  text-decoration: underline;
}

.page-contact .contact-hero h1 {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 8.4vw, 5rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-contact .contact-hero__lead {
  max-width: 62ch;
  margin: clamp(1.1rem, 3vw, 1.7rem) 0 clamp(2rem, 5vw, 3rem);
  font-size: clamp(1rem, 2.2vw, 1.125rem);
  line-height: 1.85;
  color: rgba(232, 241, 245, 0.86);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: start;
}

/* 渠道卡 */
.page-contact .channel-card {
  position: relative;
  padding: clamp(1.3rem, 3.4vw, 2.1rem);
  border: var(--hair-cyan);
  border-radius: var(--pc-radius);
  background: rgba(27, 58, 75, 0.74);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.36);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: clamp(1.3rem, 3.4vw, 2.1rem);
  width: 74px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
}

.page-contact .channel-card__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.7rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-contact .channel-card__intro {
  margin: 0 0 1.2rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-contact .channel-item {
  padding: 1.05rem 0;
  border-top: 1px dashed rgba(232, 241, 245, 0.16);
}

.page-contact .channel-item:last-child {
  padding-bottom: 0;
}

.page-contact .channel-label {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-contact .channel-value {
  margin: 0 0 0.5rem;
  font-size: clamp(1.05rem, 3vw, 1.3rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .channel-value--mail {
  font-family: var(--font-mono);
  font-size: clamp(0.9375rem, 2.9vw, 1.15rem);
  color: var(--cyan);
  letter-spacing: 0.01em;
}

.page-contact .channel-value--tel {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 4.4vw, 1.9rem);
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-contact .channel-value--ticket {
  color: var(--magenta);
}

.page-contact .channel-note {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(232, 241, 245, 0.72);
}

/* 工单准备索引卡 */
.page-contact .prep-card {
  position: relative;
  padding: clamp(1.4rem, 3.4vw, 2.1rem);
  border-radius: var(--pc-radius);
  background: var(--paper);
  color: var(--paper-ink);
  box-shadow: 0 26px 54px rgba(107, 31, 58, 0.35);
}

.page-contact .prep-card__tag {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: #6b1f3a;
}

.page-contact .prep-card__title {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.8vw, 1.85rem);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--paper-ink);
}

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

.page-contact .prep-card__list li {
  position: relative;
  padding: 0.55rem 0 0.55rem 1.5rem;
  border-bottom: 1px solid rgba(7, 19, 31, 0.12);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.page-contact .prep-card__list li:last-child {
  border-bottom: 0;
}

.page-contact .prep-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05rem;
  width: 9px;
  height: 9px;
  border: 2px solid #6b1f3a;
  border-radius: 2px;
}

.page-contact .prep-card .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.7rem 1.3rem;
  border-radius: var(--radius-sm);
  background: var(--ink-900);
  color: var(--cyan);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}

.page-contact .prep-card .btn:hover,
.page-contact .prep-card .btn:focus-visible {
  background: #6b1f3a;
  color: var(--paper);
}

/* ---------- 值班时间条 ---------- */
.page-contact .duty-strip {
  border-top: 1px solid rgba(37, 230, 216, 0.25);
  border-bottom: 1px solid rgba(232, 241, 245, 0.1);
  background:
    linear-gradient(120deg, rgba(27, 58, 75, 0.9), rgba(13, 34, 51, 0.96));
  padding: clamp(1.8rem, 4.4vw, 3rem) 0;
}

.page-contact .duty-strip__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.2rem, 3vw, 2.4rem);
  align-items: center;
}

.page-contact .duty-strip__title {
  margin: 0.35rem 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 4vw, 2.1rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-contact .duty-strip__note {
  margin: 0;
  max-width: 56ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(232, 241, 245, 0.74);
}

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

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

/* ---------- 工单准备 ---------- */
.page-contact .section {
  padding: clamp(2.6rem, 6.5vw, 5rem) 0;
}

.page-contact .ticket-prep__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: start;
}

.page-contact .ticket-prep__media {
  margin: 0;
  border-radius: var(--pc-radius);
  border: var(--hair-mist);
  background: var(--ink-800);
  overflow: hidden;
}

.page-contact .ticket-prep__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .ticket-prep__media figcaption {
  padding: 0.85rem 1.1rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--steel);
  border-top: var(--hair-mist);
}

.page-contact .ticket-prep__body h2 {
  margin: 0.4rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4.6vw, 2.6rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-contact .ticket-prep .lead {
  margin: 0 0 1.8rem;
  max-width: 58ch;
  font-size: clamp(0.98rem, 2.1vw, 1.0625rem);
  line-height: 1.85;
  color: rgba(232, 241, 245, 0.82);
}

.page-contact .ticket-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-contact .ticket-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.05rem 0;
  border-top: 1px solid rgba(232, 241, 245, 0.12);
}

.page-contact .ticket-list li:last-child {
  border-bottom: 1px solid rgba(232, 241, 245, 0.12);
}

.page-contact .ticket-list__num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 0.28rem;
}

.page-contact .ticket-list__text h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: clamp(1.02rem, 2.5vw, 1.15rem);
  font-weight: 600;
  line-height: 1.35;
  color: var(--mist);
}

.page-contact .ticket-list__text p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(232, 241, 245, 0.72);
}

/* ---------- 中段：合作 + 响应 ---------- */
.page-contact .contact-mid {
  background:
    radial-gradient(90% 60% at 100% 0%, rgba(255, 61, 139, 0.12), transparent 62%),
    var(--ink-800);
  border-top: 1px solid rgba(232, 241, 245, 0.08);
  border-bottom: 1px solid rgba(232, 241, 245, 0.08);
}

.page-contact .contact-mid__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.4rem);
}

.page-contact .coop h2,
.page-contact .response h2 {
  margin: 0.4rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4.4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-contact .coop .lead {
  margin: 0 0 1.6rem;
  max-width: 56ch;
  font-size: clamp(0.98rem, 2.1vw, 1.0625rem);
  line-height: 1.85;
  color: rgba(232, 241, 245, 0.82);
}

.page-contact .coop .lead strong {
  font-family: var(--font-mono);
  font-size: 1.12em;
  color: var(--magenta);
  padding: 0 0.1em;
}

.page-contact .coop-track {
  position: relative;
  display: grid;
  gap: 0.9rem;
  margin: 0 0 1.4rem;
  padding-left: 1.4rem;
}

.page-contact .coop-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--magenta), var(--cyan), var(--gold));
  opacity: 0.7;
}

.page-contact .coop-node {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(232, 241, 245, 0.14);
  border-radius: var(--radius-sm);
  background: rgba(7, 19, 31, 0.55);
}

.page-contact .coop-node::before {
  content: "";
  position: absolute;
  left: -1.4rem;
  top: 1.5rem;
  width: 12px;
  height: 12px;
  margin-left: -1px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
}

.page-contact .coop-node:nth-child(2)::before {
  border-color: var(--magenta);
}

.page-contact .coop-node:nth-child(3)::before {
  border-color: var(--gold);
}

.page-contact .coop-node__num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-contact .coop-node h3 {
  margin: 0 0 0.3rem;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--mist);
}

.page-contact .coop-node p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(232, 241, 245, 0.7);
}

.page-contact .coop-note {
  margin: 0 0 1.4rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--gold);
  background: rgba(255, 201, 107, 0.08);
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(232, 241, 245, 0.82);
}

.page-contact .coop .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.72rem 1.5rem;
  border-radius: var(--radius-sm);
  background: var(--magenta);
  color: #1a0410;
  font-size: 0.9375rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-contact .coop .btn:hover,
.page-contact .coop .btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 61, 139, 0.34);
}

.page-contact .response-list {
  margin: 0 0 1.3rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.85rem;
}

.page-contact .response-item {
  padding: 1rem 1.1rem;
  border-radius: var(--radius-sm);
  border: var(--hair-mist);
  background: rgba(27, 58, 75, 0.55);
}

.page-contact .response-item--high {
  border-color: rgba(255, 61, 139, 0.4);
  background: rgba(255, 61, 139, 0.09);
}

.page-contact .response-item__level {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .response-item--high .response-item__level {
  color: var(--magenta);
}

.page-contact .response-item h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--mist);
}

.page-contact .response-item p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.78;
  color: rgba(232, 241, 245, 0.72);
}

.page-contact .response-note {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .response-note a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 底部信息带 ---------- */
.page-contact .info-band {
  padding: clamp(2.2rem, 5.4vw, 3.6rem) 0 clamp(2.6rem, 6vw, 4rem);
  background: var(--ink-900);
}

.page-contact .info-band__title {
  margin: 0 0 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.6vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-contact .info-band__rows {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px dashed rgba(232, 241, 245, 0.2);
}

.page-contact .info-row {
  padding: 1rem 0;
  border-bottom: 1px dashed rgba(232, 241, 245, 0.2);
}

.page-contact .info-row__label {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--steel);
}

.page-contact .info-row__value {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .info-row__value--mono {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  letter-spacing: 0.03em;
  color: var(--gold);
}

.page-contact .info-band__note {
  margin: 1.4rem 0 0;
  max-width: 66ch;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--steel);
}

.page-contact .info-band__note a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .info-band__note a:hover,
.page-contact .info-band__note a:focus-visible {
  color: var(--cyan);
}

/* ---------- 焦点态 ---------- */
.page-contact a:focus-visible,
.page-contact .btn:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .info-band__rows {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(1.2rem, 3vw, 2.4rem);
  }

  .page-contact .info-row {
    display: grid;
    grid-template-columns: minmax(5.5rem, auto) minmax(0, 1fr);
    align-items: baseline;
    gap: 1rem;
  }

  .page-contact .info-row__label {
    margin: 0;
  }
}

@media (min-width: 880px) {
  .page-contact .contact-hero {
    padding-top: calc(var(--header-h) + 3.4rem);
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    gap: clamp(1.5rem, 3vw, 2.4rem);
  }

  .page-contact .prep-card {
    margin-top: 2.4rem;
  }

  .page-contact .duty-strip__inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-contact .ticket-prep__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: clamp(2rem, 4.4vw, 3.4rem);
  }

  .page-contact .ticket-prep__media {
    position: sticky;
    top: calc(var(--header-h) + 1.6rem);
  }

  .page-contact .contact-mid__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop .btn,
  .page-contact .prep-card .btn {
    transition: none;
  }

  .page-contact .coop .btn:hover,
  .page-contact .coop .btn:focus-visible {
    transform: none;
  }
}