.page-faq {
  --faq-moss-line: rgba(78, 107, 74, .9);
  --faq-panel: rgba(28, 34, 41, .55);
  --faq-panel-soft: rgba(28, 34, 41, .28);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  padding: clamp(26px, 5vw, 56px) 0 clamp(18px, 3vw, 30px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-intro h1 {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(30px, 7.4vw, 76px);
  line-height: 1.06;
  letter-spacing: .01em;
  color: var(--paper);
  margin: 12px 0 0;
  max-width: 20ch;
}

.page-faq .faq-intro .lede {
  margin: 20px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 分组速览条 ---------- */
.page-faq .faq-scan {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 23, 29, .9), rgba(10, 13, 18, .6));
}

.page-faq .faq-scan-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.page-faq .faq-scan-label {
  flex: 0 0 auto;
  color: var(--clay);
}

.page-faq .faq-scan-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 2px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-faq .faq-scan-list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-scan-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  white-space: nowrap;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: .06em;
  text-decoration: none;
  transition: color .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-scan-link .num {
  color: var(--cyan);
  font-size: 11px;
}

.page-faq .faq-scan-link:hover,
.page-faq .faq-scan-link:focus-visible {
  color: var(--void);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-scan-link:hover .num,
.page-faq .faq-scan-link:focus-visible .num {
  color: var(--void);
}

.page-faq .faq-scan-link.is-current {
  color: var(--cyan);
  border-color: rgba(43, 227, 210, .55);
  background: var(--cyan-soft);
}

/* ---------- 图片 ---------- */
.page-faq .faq-diagram {
  margin-top: clamp(24px, 4vw, 44px);
}

.page-faq .faq-flow {
  margin: 4px 0 clamp(20px, 3vw, 32px);
}

.page-faq .figure-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(43, 227, 210, .10), rgba(138, 92, 255, .08) 55%, rgba(78, 107, 74, .12));
}

.page-faq .figure-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.92) contrast(1.05);
}

.page-faq .figure-caption {
  margin-top: 10px;
  color: var(--mist);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: clamp(34px, 6vw, 68px) 0 clamp(6px, 1.6vw, 14px);
  scroll-margin-top: calc(var(--masthead-h) + 24px);
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding-left: 14px;
  border-left: 2px solid var(--faq-moss-line);
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-group-index {
  padding-top: 5px;
  color: var(--clay);
  font-size: 12px;
  letter-spacing: .12em;
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(23px, 4.4vw, 40px);
  line-height: 1.12;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-faq .faq-group-lede {
  margin: 10px 0 0;
  max-width: 62ch;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-group-lede .num,
.page-faq .faq-group-lede .faq-key {
  color: var(--magenta);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--faq-panel), var(--faq-panel-soft));
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(43, 227, 210, .38);
}

.page-faq .faq-item[open] {
  border-color: rgba(43, 227, 210, .5);
  background: linear-gradient(180deg, rgba(28, 34, 41, .78), rgba(18, 23, 29, .5));
}

.page-faq .faq-q {
  position: relative;
  padding: 15px 46px 15px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: 16px;
  line-height: 1.65;
  transition: color .2s var(--ease);
}

.page-faq .faq-q::-webkit-details-marker {
  display: none;
}

.page-faq .faq-q::after {
  content: "+";
  position: absolute;
  top: 14px;
  right: 16px;
  width: 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-q::after {
  content: "–";
  color: var(--clay);
}

.page-faq .faq-q:hover {
  color: var(--cyan);
}

.page-faq .faq-a {
  padding: 0 18px 20px 16px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-a::before {
  content: "";
  display: block;
  height: 1px;
  margin-bottom: 14px;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(43, 227, 210, .12) 60%, transparent 100%);
}

.page-faq .faq-item[open] .faq-a::before {
  animation: faq-sweep .55s var(--ease) both;
  transform-origin: left center;
}

@keyframes faq-sweep {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.page-faq .faq-a p {
  margin: 0 0 10px;
}

.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 210, .4);
}

.page-faq .faq-a a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-key,
.page-faq .faq-a .num {
  color: var(--magenta);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: .96em;
}

/* ---------- 步骤编号 ---------- */
.page-faq .faq-steps {
  counter-reset: faq-step;
  margin: 12px 0 12px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  counter-increment: faq-step;
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  padding: 7px 0;
  line-height: 1.8;
  border-bottom: 1px dashed rgba(122, 140, 147, .16);
}

.page-faq .faq-steps li:last-child {
  border-bottom: 0;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

/* ---------- 人工渠道 ---------- */
.page-faq .faq-channel {
  margin-top: clamp(24px, 4vw, 40px);
  padding: clamp(18px, 3vw, 30px);
  border: 1px solid var(--line);
  border-top: 2px solid var(--clay);
  background: linear-gradient(160deg, rgba(28, 34, 41, .72), rgba(18, 23, 29, .5));
}

.page-faq .faq-channel .index-label {
  margin: 0 0 14px;
  color: var(--clay);
}

.page-faq .faq-channel-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
}

.page-faq .faq-channel-list .contact-key {
  color: var(--mist);
  font-size: 12px;
  letter-spacing: .12em;
}

.page-faq .faq-channel-list .contact-value {
  margin: 4px 0 0;
  color: var(--paper);
  font-size: 16px;
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .faq-channel-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .faq-channel-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 210, .4);
}

.page-faq .faq-channel-note a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 桌面加强 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-scan-inner {
    gap: 22px;
  }

  .page-faq .faq-group-head {
    grid-template-columns: 46px 1fr;
    gap: 24px;
    padding-left: 22px;
  }

  .page-faq .faq-group-index {
    font-size: 13px;
    padding-top: 9px;
  }

  .page-faq .faq-q {
    padding: 18px 54px 18px 22px;
    font-size: 17px;
  }

  .page-faq .faq-q::after {
    top: 17px;
    right: 22px;
  }

  .page-faq .faq-a {
    padding: 0 54px 24px 22px;
  }

  .page-faq .faq-steps li {
    grid-template-columns: 34px 1fr;
  }

  .page-faq .faq-channel-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-channel-list .contact-item--wide,
  .page-faq .faq-channel-list .contact-item:last-child {
    grid-column: 1 / -1;
  }

  .page-faq .faq-flow {
    max-width: 78%;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-intro {
    padding-top: clamp(40px, 6vw, 76px);
  }

  .page-faq .faq-group-head {
    grid-template-columns: 56px 1fr;
  }
}