.page-contact {
  --fb-line-cool: rgba(53, 224, 208, 0.22);
  --fb-line-dust: rgba(126, 147, 166, 0.2);
  --fb-line-soft: rgba(126, 147, 166, 0.12);
  --fb-pad-y: clamp(34px, 7vw, 74px);
  display: block;
  padding-bottom: clamp(40px, 8vw, 88px);
  overflow-x: hidden;
}

.page-contact .crumbs {
  margin-top: clamp(14px, 3vw, 26px);
}

/* ---------- 首屏 ---------- */

.page-contact .fb-hero {
  position: relative;
  margin-top: clamp(16px, 3vw, 28px);
  padding: clamp(30px, 6vw, 62px) 0 clamp(32px, 6vw, 64px);
  border-top: 1px solid var(--fb-line-cool);
  border-bottom: 1px solid var(--fb-line-dust);
  background-image:
    repeating-linear-gradient(90deg, rgba(126, 147, 166, 0.09) 0 1px, transparent 1px 76px);
}

.page-contact .fb-hero__inner {
  display: grid;
  gap: clamp(18px, 4vw, 34px);
}

.page-contact .fb-hero__rail .eyebrow {
  margin: 0 0 12px;
}

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

.page-contact .fb-ticks li {
  position: relative;
  padding-left: 18px;
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mute-slate);
}

.page-contact .fb-ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--cyan-pulse);
}

.page-contact .fb-hero__lead h1 {
  margin: 0;
  font-size: clamp(30px, 7.4vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-contact .fb-hero__lead .lede {
  margin: clamp(16px, 3vw, 22px) 0 0;
  max-width: 30em;
}

.page-contact .fb-hero__note {
  margin: 14px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--amber-signal);
  font-size: 14px;
  line-height: 1.7;
  color: var(--mute-slate);
}

/* ---------- 通用标题 ---------- */

.page-contact .fb-h2 {
  margin: 0;
  font-size: clamp(23px, 4.4vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.018em;
  font-weight: 900;
  color: var(--paper-cream);
}

.page-contact .fb-note {
  margin: 12px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mute-slate);
}

.page-contact .fb-note--tight {
  margin-top: 6px;
}

.page-contact .fb-sub {
  margin: clamp(26px, 5vw, 40px) 0 0;
  font-size: clamp(17px, 3vw, 21px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper-cream);
}

/* ---------- 对开区 ---------- */

.page-contact .fb-split {
  padding-top: var(--fb-pad-y);
}

.page-contact .fb-split__grid {
  display: grid;
  gap: clamp(28px, 5vw, 46px);
}

.page-contact .fb-pre {
  list-style: none;
  margin: clamp(20px, 4vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .fb-pre__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  background: var(--ink-archive);
  border-left: 3px solid var(--cyan-pulse);
  border-radius: var(--r);
}

.page-contact .fb-pre__item--violet {
  border-left-color: var(--violet-index);
}

.page-contact .fb-pre__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(22px, 5vw, 30px);
  line-height: 1;
  color: var(--cyan-pulse);
}

.page-contact .fb-pre__item--violet .fb-pre__num {
  color: var(--violet-index);
}

.page-contact .fb-pre__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper-cream);
}

.page-contact .fb-pre__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mute-slate);
}

/* ---------- 材料清单 ---------- */

.page-contact .fb-mats {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .fb-mat {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background: rgba(30, 58, 82, 0.42);
  border: 1px solid var(--fb-line-soft);
  border-radius: var(--r);
}

.page-contact .fb-mat__check {
  margin-top: 3px;
  flex: none;
  color: var(--mint-soft);
}

.page-contact .fb-mat__body {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-contact .fb-mat__key {
  font-size: 15px;
  font-weight: 800;
  color: var(--paper-cream);
}

.page-contact .fb-mat__val {
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--mute-slate);
}

.page-contact .fb-mats__media {
  margin: clamp(20px, 4vw, 28px) 0 0;
}

.page-contact .media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
  object-fit: cover;
}

.page-contact .media__cap {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mute-slate);
}

/* ---------- 速查折叠 ---------- */

.page-contact .fb-quick {
  margin-top: clamp(22px, 4vw, 32px);
  background: rgba(30, 58, 82, 0.4);
  border: 1px solid var(--fb-line-soft);
  border-radius: var(--r);
}

.page-contact .fb-quick > summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 800;
  color: var(--mint-soft);
}

.page-contact .fb-quick > summary::-webkit-details-marker {
  display: none;
}

.page-contact .fb-quick > summary::after {
  content: "＋";
  font-family: var(--font-num);
  font-size: 16px;
  color: var(--cyan-pulse);
}

.page-contact .fb-quick[open] > summary::after {
  content: "－";
}

.page-contact .fb-quick__list {
  list-style: none;
  margin: 0;
  padding: 4px 18px 18px;
  display: grid;
  gap: 12px;
}

.page-contact .fb-quick__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mute-slate);
}

.page-contact .fb-quick__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 7px;
  height: 7px;
  border-radius: 1px;
  background: var(--violet-index);
}

/* ---------- 联系方式面板 ---------- */

.page-contact .fb-channels {
  padding: clamp(20px, 4vw, 30px);
  background: var(--glass-bg-strong);
  border: 1px solid var(--fb-line-cool);
  border-radius: var(--r);
  box-shadow: var(--shadow-deep);
  min-width: 0;
}

.page-contact .fb-channels .eyebrow {
  margin: 0 0 18px;
}

.page-contact .fb-channel {
  padding: 2px 0;
}

.page-contact .fb-channel__label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--mute-slate);
}

.page-contact .fb-channel__value {
  margin: 6px 0 0;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(19px, 4.6vw, 27px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper-cream);
  overflow-wrap: anywhere;
}

.page-contact .fb-channel__value--mail {
  color: var(--cyan-pulse);
  font-size: clamp(16px, 4vw, 23px);
}

.page-contact .fb-channel__value--addr {
  font-size: clamp(16px, 3.6vw, 20px);
  letter-spacing: 0;
}

.page-contact .fb-channel__value--time {
  color: var(--mint-soft);
  font-size: clamp(17px, 3.8vw, 22px);
}

.page-contact .fb-channel__hint {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mute-slate);
}

.page-contact .fb-channels .hairline {
  margin: 18px 0;
  border-color: var(--fb-line-soft);
}

.page-contact .fb-channels__foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--fb-line-dust);
  font-size: 13px;
  line-height: 1.75;
  color: var(--mute-slate);
}

.page-contact .fb-channels__foot a {
  color: var(--cyan-pulse);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.45);
}

.page-contact .fb-channels__foot a:hover {
  border-bottom-color: var(--cyan-pulse);
}

/* ---------- 四阶段流程 ---------- */

.page-contact .fb-flow {
  padding-top: var(--fb-pad-y);
}

.page-contact .fb-flow__head {
  max-width: 44rem;
}

.page-contact .fb-flow__track {
  display: grid;
  gap: 12px;
  margin-top: clamp(22px, 4vw, 34px);
}

.page-contact .fb-stage {
  position: relative;
  background: var(--ink-archive);
  border-top: 4px solid var(--cyan-pulse);
  border-radius: var(--r);
  overflow: visible;
}

.page-contact .fb-stage--amber {
  border-top-color: var(--amber-signal);
}

.page-contact .fb-stage--cyan {
  border-top-color: var(--cyan-pulse);
}

.page-contact .fb-stage--violet {
  border-top-color: var(--violet-index);
}

.page-contact .fb-stage--mint {
  border-top-color: var(--mint-soft);
}

.page-contact .fb-stage__sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 10px;
  padding: 16px 16px 8px;
  cursor: pointer;
  list-style: none;
}

.page-contact .fb-stage__sum::-webkit-details-marker {
  display: none;
}

.page-contact .fb-stage__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(24px, 5vw, 32px);
  line-height: 1;
  color: var(--amber-signal);
}

.page-contact .fb-stage--cyan .fb-stage__num {
  color: var(--cyan-pulse);
}

.page-contact .fb-stage--violet .fb-stage__num {
  color: var(--violet-index);
}

.page-contact .fb-stage--mint .fb-stage__num {
  color: var(--mint-soft);
}

.page-contact .fb-stage__name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--paper-cream);
}

.page-contact .fb-stage__text {
  margin: 0;
  padding: 0 16px 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mute-slate);
}

.page-contact .fb-flow__media {
  margin: clamp(26px, 5vw, 40px) 0 0;
}

/* ---------- 内容纠错 ---------- */

.page-contact .fb-fix {
  padding-top: var(--fb-pad-y);
}

.page-contact .fb-fix__grid {
  display: grid;
  gap: clamp(20px, 4vw, 44px);
}

.page-contact .fb-fix__head .eyebrow {
  margin: 0 0 14px;
}

.page-contact .fb-fix__body {
  padding: clamp(22px, 4vw, 38px);
  background: var(--paper-cream);
  color: var(--text-ink);
  border-left: 6px solid var(--amber-signal);
  border-radius: var(--r);
  box-shadow: var(--shadow-deep);
  min-width: 0;
}

.page-contact .fb-fix__body p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.88;
}

.page-contact .fb-fix__body p:last-of-type {
  margin-bottom: 0;
}

.page-contact .fb-fix__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-contact .fb-fix__link {
  display: inline-flex;
  align-items: center;
  padding: 11px 18px;
  font-size: 14.5px;
  font-weight: 800;
  text-decoration: none;
  color: var(--paper-cream);
  background: var(--text-ink);
  border: 1px solid var(--text-ink);
  border-radius: var(--r);
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .fb-fix__link:hover {
  background: var(--amber-signal);
  border-color: var(--amber-signal);
  color: var(--text-ink);
}

.page-contact .fb-fix__link--quiet {
  color: var(--text-ink);
  background: transparent;
  border-color: rgba(14, 26, 36, 0.35);
}

.page-contact .fb-fix__link--quiet:hover {
  background: var(--text-ink);
  border-color: var(--text-ink);
  color: var(--paper-cream);
}

/* ---------- 断点 ---------- */

@media (min-width: 620px) {
  .page-contact .fb-mats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 800px) {
  .page-contact .fb-hero__inner {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: clamp(26px, 4vw, 52px);
    align-items: start;
  }

  .page-contact .fb-hero__rail {
    padding-top: 10px;
    border-right: 1px solid var(--fb-line-soft);
    padding-right: 20px;
  }

  .page-contact .fb-flow__track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    align-items: start;
  }

  .page-contact .fb-stage:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 20px;
    right: -12px;
    width: 8px;
    height: 8px;
    border-top: 2px solid var(--mute-slate);
    border-right: 2px solid var(--mute-slate);
    transform: rotate(45deg);
    z-index: 2;
  }
}

@media (min-width: 980px) {
  .page-contact .fb-split__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.82fr);
    align-items: start;
    gap: clamp(30px, 4vw, 56px);
  }

  .page-contact .fb-channels {
    position: sticky;
    top: 96px;
  }

  .page-contact .fb-fix__grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
  }

  .page-contact .fb-fix__head {
    padding-top: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb-fix__link {
    transition: none;
  }
}