.page-faq {
  --faq-r: 14px;
  --faq-hair: rgba(47, 227, 208, .42);
}

.page-faq img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-faq section[id] {
  scroll-margin-top: 72px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: 28px;
  padding: clamp(24px, 5vw, 56px) 0 clamp(18px, 3vw, 30px);
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 84px 84px;
  opacity: .16;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 88%);
  pointer-events: none;
}

.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq h1 {
  margin: 0 0 18px;
  max-width: 20ch;
  font-family: var(--font-title);
  font-size: clamp(30px, 7.2vw, 58px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--cream);
}

.page-faq .lede {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.9;
  color: rgba(243, 231, 211, .84);
}

.page-faq .faq-hero__card {
  padding: 22px 20px;
  border: 1px solid var(--grid);
  border-radius: var(--faq-r);
  background: linear-gradient(160deg, var(--navy) 0%, var(--deep) 100%);
}

.page-faq .faq-hero__card-label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-faq .faq-hero__facts {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-hero__facts > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--grid);
}

.page-faq .faq-hero__facts > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-hero__facts dt {
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--orange);
  white-space: nowrap;
}

/* ---------- 分类快捷入口 ---------- */
.page-faq .faq-chips {
  display: flex;
  gap: 10px;
  padding: 18px 0 26px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-chip {
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid var(--grid);
  border-radius: 999px;
  background: var(--navy);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  text-decoration: none;
  white-space: nowrap;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--deep);
}

/* ---------- 换机步骤 ---------- */
.page-faq .faq-steps__figure {
  margin: 0 0 26px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .faq-step {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--grid);
  border-radius: var(--faq-r);
  background: var(--navy);
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-step:hover {
  border-color: var(--faq-hair);
  background: var(--panel);
}

.page-faq .faq-step__num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-faq .faq-step__title {
  margin: 0 0 10px;
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .faq-step__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(243, 231, 211, .78);
}

.page-faq .faq-step__trap {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--grid);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-step__trap span {
  display: inline-block;
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-faq .plaque {
  margin: 26px 0 0;
  color: var(--deep);
  font-size: 14px;
  line-height: 1.85;
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  display: block;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-item:first-child {
  border-top: 1px solid var(--grid);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--cream);
  transition: color .18s var(--ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.1;
  color: var(--cyan);
}

.page-faq .faq-item[open] > summary {
  color: var(--cyan);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
}

.page-faq .faq-item > summary:hover {
  color: var(--cyan);
}

.page-faq .faq-item__body {
  padding: 0 4px 24px;
  max-width: 64ch;
}

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.95;
  color: rgba(243, 231, 211, .8);
}

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-hair);
}

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

/* ---------- 查询区左右分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-faq .faq-split__aside {
  display: grid;
  gap: 18px;
}

.page-faq .faq-split__aside .figure {
  margin: 0;
}

.page-faq .faq-aside-note {
  margin: 0;
  padding: 18px 18px 20px;
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--faq-r) var(--faq-r) 0;
  background: var(--navy);
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-aside-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-hair);
}

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

/* ---------- 更正流程 ---------- */
.page-faq .faq-fix {
  display: grid;
  gap: 26px;
}

.page-faq .faq-flow {
  counter-reset: flow;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-flow > li {
  position: relative;
  padding: 20px 20px 20px 68px;
  border: 1px solid var(--grid);
  border-radius: var(--faq-r);
  background: var(--navy);
}

.page-faq .faq-flow > li::before {
  counter-increment: flow;
  content: "0" counter(flow);
  position: absolute;
  top: 20px;
  left: 20px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-flow h3 {
  margin: 0 0 8px;
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .faq-flow p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(243, 231, 211, .78);
}

.page-faq .faq-fix .plaque {
  margin: 0;
  color: var(--deep);
  font-size: 14px;
  line-height: 1.85;
}

/* ---------- 联系前准备 ---------- */
.page-faq .faq-prep {
  display: grid;
  gap: 22px;
}

.page-faq .faq-prep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-prep__list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--grid);
  border-radius: var(--faq-r);
  background: var(--navy);
}

.page-faq .faq-prep__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .faq-prep__list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 231, 211, .82);
}

.page-faq .faq-prep__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-prep__foot {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist);
}

/* ---------- 宽屏 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 880px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.5fr) minmax(260px, .85fr);
    gap: 48px;
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.55fr) minmax(250px, .85fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-split__aside {
    position: sticky;
    top: 44px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-step:not(:last-child)::after {
    content: "›";
    position: absolute;
    top: 30px;
    right: -17px;
    font-family: var(--font-mono);
    font-size: 22px;
    line-height: 1;
    color: var(--cyan);
    pointer-events: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-chip,
  .page-faq .faq-item > summary {
    transition: none;
  }
}