.page-contact {
  --pc-band: linear-gradient(100deg, rgba(31, 99, 216, .2), rgba(11, 14, 19, 0) 64%);
  --pc-cell: clamp(16px, 2.4vw, 24px);
  position: relative;
  padding-block: clamp(18px, 4vw, 44px) clamp(56px, 9vw, 108px);
  overflow-x: clip;
}

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

.page-contact .breadcrumbs {
  margin-bottom: clamp(20px, 3.4vw, 40px);
}

.page-contact .section__title {
  margin: 12px 0 0;
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--silver);
}

.page-contact .section__title em {
  font-style: normal;
  font-weight: 900;
  background: linear-gradient(92deg, var(--silver) 6%, var(--gold-lt) 52%, var(--gold) 94%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.page-contact .section__lead {
  max-width: 62ch;
  margin-top: 16px;
  color: var(--silver-mid);
  line-height: 1.75;
}

/* ——— 首屏分屏 ——— */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  border-top: var(--line);
  padding-block: clamp(26px, 5vw, 62px) clamp(30px, 6vw, 72px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    var(--pc-band),
    repeating-linear-gradient(90deg, var(--grid-soft) 0 1px, transparent 1px 24px);
  -webkit-mask-image: linear-gradient(118deg, #000 0%, rgba(0, 0, 0, .25) 58%, transparent 84%);
  mask-image: linear-gradient(118deg, #000 0%, rgba(0, 0, 0, .25) 58%, transparent 84%);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.page-contact .contact-hero__title {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(38px, 8.4vw, 96px);
  line-height: .98;
  letter-spacing: -.02em;
  color: var(--silver);
}

.page-contact .contact-hero__title em {
  font-style: normal;
  font-weight: 900;
  background: linear-gradient(92deg, var(--silver) 4%, var(--gold-lt) 50%, var(--gold) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.page-contact .contact-hero__lead {
  max-width: 60ch;
  margin: clamp(18px, 3vw, 28px) 0 0;
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.8;
  color: var(--silver-mid);
}

.page-contact .contact-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero__quick a {
  display: inline-block;
  padding: 9px 14px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--silver-mid);
  text-decoration: none;
  border: 1px solid var(--grid);
  background: rgba(19, 26, 40, .5);
  transition: border-color .3s var(--ease), color .3s var(--ease), background-color .3s var(--ease);
}

.page-contact .contact-hero__quick a:hover,
.page-contact .contact-hero__quick a:focus-visible {
  color: var(--pulse);
  border-color: var(--blue);
  background: rgba(31, 99, 216, .16);
}

.page-contact .contact-hero__visual {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 520px;
  margin-inline: auto;
}

.page-contact .contact-hero__visual svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-contact .pc-ring {
  fill: none;
  stroke: var(--grid);
  stroke-width: 1;
}

.page-contact .pc-ring--accent {
  stroke: var(--blue);
  opacity: .5;
}

.page-contact .pc-link {
  stroke: var(--grid-soft);
  stroke-width: 1;
}

.page-contact .pc-node {
  fill: var(--gold);
}

.page-contact .pc-node--blue {
  fill: var(--pulse);
}

.page-contact .pc-label text {
  font-family: var(--font-index);
  font-size: 13px;
  letter-spacing: .18em;
  fill: var(--silver-mid);
}

/* ——— 渠道卡 ——— */
.page-contact .contact-banner {
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .contact-banner img {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-contact .channel-grid {
  display: grid;
  gap: var(--pc-cell);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(180deg, var(--panel) 0%, var(--panel-deep) 100%);
  border: 1px solid var(--grid);
  transition: border-color .35s var(--ease);
}

.page-contact .channel-card:hover {
  border-color: var(--blue);
}

.page-contact .channel-card__bar {
  position: absolute;
  left: -1px;
  right: -1px;
  top: -1px;
  height: 2px;
  background: var(--silver-mid);
  opacity: .6;
}

.page-contact .channel-card--gold .channel-card__bar {
  background: linear-gradient(90deg, var(--gold), var(--gold-lt));
  opacity: 1;
}

.page-contact .channel-card--blue .channel-card__bar {
  background: linear-gradient(90deg, var(--blue), var(--pulse));
  opacity: 1;
}

.page-contact .channel-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.page-contact .channel-card__icon {
  display: block;
  width: 34px;
  height: 34px;
  color: var(--pulse);
}

.page-contact .channel-card__icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-contact .channel-card__name {
  margin: 4px 0 0;
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 700;
  color: var(--silver);
  letter-spacing: .01em;
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--gold);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .channel-card__value--num {
  font-size: clamp(22px, 3.2vw, 28px);
  letter-spacing: .02em;
}

.page-contact .channel-card__value--plain {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 16px;
  color: var(--silver);
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver-mid);
}

.page-contact .channel-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 2px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel-card__tags li {
  padding: 5px 10px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--silver-mid);
  border: 1px solid var(--grid);
  transition: color .3s var(--ease), border-color .3s var(--ease), background-color .3s var(--ease);
}

.page-contact .channel-card:hover .channel-card__tags li,
.page-contact .channel-card:focus-within .channel-card__tags li {
  color: var(--pulse);
  border-color: rgba(77, 163, 255, .5);
  background: rgba(31, 99, 216, .16);
}

.page-contact .channel-card__foot {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--grid);
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver-mid);
}

/* ——— 时效信息条 ——— */
.page-contact .timing-bar {
  display: grid;
  gap: clamp(22px, 3vw, 32px);
  padding: clamp(24px, 4vw, 42px);
  background: linear-gradient(120deg, rgba(31, 99, 216, .16), transparent 62%), var(--panel-deep);
  border: 1px solid var(--grid);
  border-left: 2px solid var(--gold);
}

.page-contact .timing-bar__num {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 4.6vw, 40px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: .01em;
}

.page-contact .timing-bar__label {
  margin: 10px 0 0;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--silver-mid);
}

.page-contact .timing-bar__note {
  margin: 0;
  padding-top: clamp(16px, 2.4vw, 22px);
  border-top: 1px solid var(--grid);
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver-mid);
}

/* ——— 五项信息清单 ——— */
.page-contact .contact-checklist__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-contact .contact-checklist__note {
  margin: 20px 0 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver-mid);
}

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

.page-contact .checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 18px;
  padding: clamp(16px, 2.4vw, 22px) clamp(10px, 1.6vw, 16px);
  border-bottom: 1px solid var(--grid);
  transition: background-color .3s var(--ease);
}

.page-contact .checklist li:hover {
  background: rgba(31, 99, 216, .08);
}

.page-contact .checklist__num {
  padding-top: 3px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-contact .checklist h3 {
  margin: 0;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  color: var(--silver);
}

.page-contact .checklist p {
  grid-column: 2;
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver-mid);
}

/* ——— 函件与备案 ——— */
.page-contact .contact-letter__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .letter-list {
  margin: clamp(20px, 3vw, 30px) 0 0;
  border-top: 1px solid var(--grid);
}

.page-contact .letter-list > div {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--grid);
}

.page-contact .letter-list dt {
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .letter-list dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--silver);
}

.page-contact .letter-list dd.is-note {
  font-size: 15px;
  color: var(--silver-mid);
}

.page-contact .letter-list__num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--silver);
}

.page-contact .contact-letter__fig img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

/* ——— 相关页面 ——— */
.page-contact .next-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(24px, 4vw, 40px);
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-contact .next-card {
  display: block;
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink);
  text-decoration: none;
  transition: background-color .3s var(--ease);
}

.page-contact .next-card:hover,
.page-contact .next-card:focus-visible {
  background: var(--panel);
}

.page-contact .next-card h3 {
  margin: 12px 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--silver);
  transition: color .3s var(--ease);
}

.page-contact .next-card:hover h3,
.page-contact .next-card:focus-visible h3 {
  color: var(--gold-lt);
}

.page-contact .next-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver-mid);
}

/* ——— 响应式 ——— */
@media (min-width: 620px) {
  .page-contact .letter-list > div {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-contact .timing-bar__note {
    grid-column: 1 / -1;
  }

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

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-contact .contact-checklist__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-contact .contact-letter__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: stretch;
  }
}

@media (min-width: 1100px) {
  .page-contact .channel-card:nth-child(2) {
    transform: translateY(-16px);
  }

  .page-contact .contact-hero__visual {
    margin-inline: 0 0 auto;
    margin-right: 0;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-contact .contact-hero::before {
    animation: pc-drift 26s linear infinite;
  }

  @keyframes pc-drift {
    from {
      background-position: 0 0, 0 0;
    }
    to {
      background-position: 0 0, 240px 0;
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .channel-card__tags li,
  .page-contact .next-card,
  .page-contact .checklist li {
    transition: none;
  }
}