.page-contact {
  --pc-y: clamp(44px, 7vw, 92px);
  --pc-pad: clamp(18px, 2.6vw, 28px);
  background: var(--deep);
  color: var(--sand);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-contact .pc-crumb {
  padding-top: clamp(12px, 2.4vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-bottom: var(--pc-y);
  background:
    radial-gradient(92% 72% at 86% 0%, rgba(11, 90, 95, .88), rgba(5, 48, 58, 0) 64%),
    linear-gradient(180deg, rgba(8, 17, 15, .5), rgba(5, 48, 58, 0) 46%),
    var(--deep);
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: center;
  margin-top: clamp(16px, 3vw, 30px);
}

.page-contact .contact-hero__text .eyebrow,
.page-contact .pc-sec-head .eyebrow {
  color: var(--coral);
  margin: 0 0 4px;
}

.page-contact .contact-hero__text h1 {
  margin: 12px 0 16px;
  font-family: var(--font-head);
  font-size: var(--fs-display);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--sand);
}

.page-contact .contact-hero__text .lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--shoal);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--shoal);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--tide);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 760;
  object-fit: cover;
}

.page-contact .contact-hero__caption {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid rgba(127, 201, 194, .45);
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  color: var(--shoal);
  background: rgba(5, 48, 58, .55);
}

/* ---------- 通用区块标题 ---------- */
.page-contact .pc-sec-head {
  max-width: 62ch;
  margin: 0 0 clamp(22px, 3.4vw, 40px);
}

.page-contact .pc-sec-head .section-title {
  margin: 10px 0 14px;
  font-family: var(--font-head);
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--sand);
}

.page-contact .pc-sec-head .lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--shoal);
}

/* ---------- 两条通道 ---------- */
.page-contact .pc-channels {
  padding: var(--pc-y) 0;
  background: var(--tide);
  border-top: 1px solid rgba(127, 201, 194, .35);
  border-bottom: 1px solid rgba(127, 201, 194, .35);
}

.page-contact .channels__grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: var(--pc-pad);
  border: 1px solid var(--shoal);
  border-radius: var(--radius);
  background: rgba(5, 48, 58, .62);
  transition: outline-color 200ms var(--ease), background 200ms var(--ease);
  outline: 1px solid transparent;
  outline-offset: 0;
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  outline-color: var(--coral);
  outline-offset: 2px;
  background: rgba(5, 48, 58, .82);
}

.page-contact .channel-card__icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 1px solid var(--shoal);
  border-radius: var(--radius);
  color: var(--coral);
}

.page-contact .channel-card__icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--fs-h3);
  font-weight: 800;
  color: var(--sand);
}

.page-contact .channel-card__value {
  margin: 0;
  padding: 9px 12px;
  border-left: 2px solid var(--lime);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(184, 255, 60, .09);
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.9vw, 17px);
  line-height: 1.5;
  color: var(--sand);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: var(--shoal);
}

.page-contact .channel-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--sand);
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 6px;
  height: 6px;
  background: var(--shoal);
}

.page-contact .channel-card .copy-btn {
  margin-top: auto;
  align-self: flex-start;
  padding: 8px 18px;
  border: 1px solid var(--shoal);
  border-radius: var(--radius);
  background: transparent;
  color: var(--sand);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  cursor: pointer;
  transition: border-color 180ms var(--ease), color 180ms var(--ease), background 180ms var(--ease);
}

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

.page-contact .channel-card .copy-btn[data-copied] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

/* ---------- 处理顺序 ---------- */
.page-contact .pc-flow {
  padding: var(--pc-y) 0;
  background: var(--deep);
}

.page-contact .pc-flow__figure {
  margin: 0 0 clamp(22px, 3.6vw, 38px);
  border: 1px solid rgba(127, 201, 194, .42);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--tide);
}

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

.page-contact .pc-flow__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: rgba(127, 201, 194, .34);
  border-top: 1px solid rgba(127, 201, 194, .34);
  border-bottom: 1px solid rgba(127, 201, 194, .34);
}

.page-contact .pc-flow__step {
  background: var(--deep);
  padding: clamp(18px, 2.6vw, 26px) clamp(6px, 1.4vw, 16px);
}

.page-contact .pc-flow__summary {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: var(--fs-h4);
  font-weight: 700;
  color: var(--sand);
}

.page-contact .pc-flow__summary::-webkit-details-marker {
  display: none;
}

.page-contact .pc-flow__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--coral);
}

.page-contact .pc-flow__details[open] .pc-flow__summary::after {
  content: "\2212";
}

.page-contact .pc-flow__no {
  flex: none;
  padding: 2px 7px;
  border-radius: 2px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  line-height: 1.6;
}

.page-contact .pc-flow__step:nth-child(n+2) .pc-flow__no {
  background: transparent;
  border: 1px solid var(--shoal);
  color: var(--shoal);
}

.page-contact .pc-flow__body {
  animation: pc-flow-in 220ms var(--ease);
}

.page-contact .pc-flow__body p {
  margin: 12px 0 0;
  max-width: 32em;
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: var(--shoal);
}

@keyframes pc-flow-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 自助排查入口 ---------- */
.page-contact .pc-bridge {
  padding: var(--pc-y) 0;
  background: var(--deep);
}

.page-contact .pc-bridge__grid {
  display: grid;
  gap: 1px;
  border: 1px solid rgba(127, 201, 194, .34);
  background: rgba(127, 201, 194, .34);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .pc-bridge__item {
  display: grid;
  gap: 8px;
  padding: var(--pc-pad);
  background: var(--deep);
  text-decoration: none;
  color: inherit;
  transition: background 200ms var(--ease);
}

.page-contact .pc-bridge__item:hover,
.page-contact .pc-bridge__item:focus-visible {
  background: var(--tide);
}

.page-contact .pc-bridge__no {
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  color: var(--coral);
}

.page-contact .pc-bridge__name {
  font-family: var(--font-head);
  font-size: var(--fs-h4);
  font-weight: 700;
  color: var(--sand);
}

.page-contact .pc-bridge__desc {
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--shoal);
}

/* ---------- 联系信息（浅色区） ---------- */
.page-contact .pc-info {
  padding: var(--pc-y) 0 calc(var(--pc-y) + 8px);
  background: var(--sand);
  color: var(--ink);
}

.page-contact .pc-info .eyebrow {
  color: #C2431F;
}

.page-contact .pc-info .section-title {
  color: var(--ink);
}

.page-contact .pc-info .lede {
  color: var(--mist);
}

.page-contact .pc-info__grid {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .pc-info__cell {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: var(--pc-pad);
  background: var(--sand);
}

.page-contact .pc-info__label {
  margin: 0;
  font-size: var(--fs-note);
  letter-spacing: .1em;
  color: var(--mist);
}

.page-contact .pc-info__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.9vw, 18px);
  line-height: 1.55;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .pc-info__value--plain {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  overflow-wrap: break-word;
}

.page-contact .pc-info .copy-btn {
  padding: 7px 14px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-note);
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .pc-info .copy-btn:hover {
  background: var(--ink);
  color: var(--sand);
}

.page-contact .pc-info .copy-btn[data-copied] {
  background: var(--coral);
  border-color: var(--coral);
  color: #FFFFFF;
}

.page-contact .pc-info__note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: var(--measure);
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .pc-bridge__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 760px) {
  .page-contact .channels__grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-contact .pc-info__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 880px) {
  .page-contact .pc-flow__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .pc-flow__step {
    padding-left: clamp(14px, 1.6vw, 22px);
    padding-right: clamp(14px, 1.6vw, 22px);
  }
}

@media (min-width: 920px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: clamp(34px, 5vw, 66px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}