.page-contact {
  --contact-pad: clamp(56px, 8.5vw, 104px);
  --contact-surface: rgba(11, 16, 48, 0.52);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(40px, 8vw, 84px)) 0 var(--contact-pad);
  background:
    radial-gradient(88% 58% at 50% 0%, rgba(79, 209, 224, 0.13), transparent 66%),
    radial-gradient(70% 50% at 84% 90%, rgba(216, 169, 59, 0.1), transparent 72%),
    linear-gradient(180deg, #080c22 0%, var(--ink-900) 62%, var(--ink-900) 100%);
}

.page-contact .contact-hero__art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 72%;
  opacity: 0.2;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 46%, #000 100%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 46%, #000 100%);
}

.page-contact .contact-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(20px, 3.4vw, 34px);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-contact .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-contact .contact-hero h1 {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  max-width: 20ch;
  font-size: clamp(32px, 5.6vw, 64px);
  font-weight: 200;
  line-height: 1.06;
  letter-spacing: -0.025em;
  color: var(--paper);
}

.page-contact .contact-hero .lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 三条渠道卡片 ---------- */
.page-contact .channels-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(40px, 6vw, 72px);
  border: 1px solid var(--line);
  background: var(--line);
}

.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(26px, 3.4vw, 40px) clamp(22px, 3vw, 34px);
  background: rgba(21, 27, 68, 0.84);
  transition: background-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--cyan);
}

.page-contact .channel--gold::before { background: var(--gold); }
.page-contact .channel--amber::before { background: var(--amber); }

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  background: rgba(31, 40, 92, 0.92);
  box-shadow: var(--shadow-card);
}

.page-contact .channel__title {
  margin: 0;
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .channel__value {
  margin: 0;
  padding-bottom: 4px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.7vw, 17px);
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: var(--gold);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 中段纵向小节 ---------- */
.page-contact .detail {
  position: relative;
  overflow: hidden;
  padding: var(--contact-pad) 0;
}

.page-contact .detail--mail { background: var(--ink-900); }

.page-contact .detail--phone {
  background: linear-gradient(168deg, #3e1024 0%, #280a17 100%);
}

.page-contact .detail--address {
  background: linear-gradient(180deg, #0a3b37 0%, #062622 100%);
}

.page-contact .detail--prep {
  background: linear-gradient(180deg, #151b44 0%, #0f1436 100%);
}

.page-contact .detail--pulse {
  background: linear-gradient(180deg, #26124a 0%, #1a0c34 100%);
}

.page-contact .detail__art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(78% 66% at 74% 42%, #000 0%, transparent 78%);
  mask-image: radial-gradient(78% 66% at 74% 42%, #000 0%, transparent 78%);
}

.page-contact .detail__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4.4vw, 52px);
}

.page-contact .detail__body {
  max-width: 66ch;
}

.page-contact .section-index {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-contact .section-title {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .detail__p {
  margin: 0 0 1.1em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .detail__p:last-of-type {
  margin-bottom: 1.4em;
}

.page-contact .detail-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 209, 224, 0.35);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .detail-link:hover,
.page-contact .detail-link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 要点侧栏 ---------- */
.page-contact .contact-facts {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  background: var(--contact-surface);
}

.page-contact .contact-facts__row {
  display: grid;
  gap: 7px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-facts__row:first-child { padding-top: 0; }

.page-contact .contact-facts__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .contact-facts__key {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-contact .contact-facts__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* ---------- 通信地址 ---------- */
.page-contact .address-line {
  margin: clamp(22px, 3.6vw, 34px) 0 clamp(18px, 2.6vw, 26px);
  padding-left: clamp(16px, 2.2vw, 22px);
  border-left: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.2vw, 22px);
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--gold);
  overflow-wrap: anywhere;
}

.page-contact .detail__foot {
  position: relative;
  z-index: 1;
  margin: clamp(30px, 4.4vw, 46px) 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

/* ---------- 咨询前准备清单 ---------- */
.page-contact .prep-list {
  margin: clamp(28px, 4.4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 26px);
  align-items: start;
  padding: clamp(20px, 2.8vw, 28px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .prep-num {
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-contact .prep-name {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-contact .prep-text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 880px) {
  .page-contact .channels-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-contact .detail__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (max-width: 560px) {
  .page-contact .contact-hero h1 {
    font-size: clamp(28px, 8.6vw, 40px);
  }

  .page-contact .detail__p {
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .detail-link,
  .page-contact .breadcrumb a {
    transition: none;
  }
}