.page-faq {
  --faq-side: 226px;
  --faq-gap: clamp(22px, 3.4vw, 52px);
  position: relative;
  color: var(--white);
  font-family: var(--font-sans);
  padding-bottom: clamp(48px, 7vw, 88px);
  background:
    radial-gradient(980px 460px at 84% -6%, rgba(44, 242, 200, .12), transparent 62%),
    radial-gradient(720px 420px at 2% 16%, rgba(138, 107, 255, .11), transparent 68%);
}

/* ---------- 页首 ---------- */
.page-faq .faq-hero {
  padding: clamp(18px, 3.4vw, 38px) 0 clamp(16px, 2.8vw, 26px);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 20px;
  font-size: 12px;
}

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-kicker::before {
  content: "";
  width: 24px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(44, 242, 200, 0));
}

.page-faq .faq-title {
  margin: 14px 0 0;
  max-width: 24ch;
  font-size: clamp(27px, 5vw, 44px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-lede {
  margin: 16px 0 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 章节速览 ---------- */
.page-faq .faq-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
  padding: 2px 2px 12px;
  margin-bottom: clamp(20px, 3.4vw, 34px);
  border-bottom: 1px solid rgba(30, 90, 72, .5);
}

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

.page-faq .faq-nav .toc-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(30, 90, 72, .72);
  background: rgba(18, 59, 49, .42);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-nav .toc-link:hover {
  color: var(--white);
  border-color: rgba(44, 242, 200, .65);
}

.page-faq .faq-nav .toc-link[aria-current="true"] {
  color: var(--field);
  font-weight: 700;
  border-color: transparent;
  background: linear-gradient(135deg, var(--cyan), #63f2d3);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-flow {
  display: block;
}

.page-faq .faq-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding: clamp(26px, 4.2vw, 50px) 0;
  border-top: 1px solid rgba(30, 90, 72, .5);
}

.page-faq .faq-row:first-child {
  border-top: none;
}

.page-faq .faq-row__head {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: clamp(40px, 8vw, 66px);
  font-weight: 700;
  line-height: .9;
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(150deg, var(--cyan), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: var(--field);
  -webkit-text-fill-color: transparent;
}

.page-faq .faq-row__title {
  margin: 0;
  font-size: clamp(19px, 3.3vw, 24px);
  font-weight: 700;
  line-height: 1.36;
  letter-spacing: -.005em;
  color: var(--white);
}

.page-faq .faq-row__body {
  min-width: 0;
}

.page-faq .faq-row__lede {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-row__lede a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-key {
  color: var(--cyan);
  font-weight: 700;
}

/* ---------- 上手三步 ---------- */
.page-faq .faq-steps {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(44, 242, 200, .06));
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-faq .faq-step__n {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--field);
  background: linear-gradient(140deg, var(--cyan), #63f2d3);
  box-shadow: 0 0 0 4px rgba(5, 23, 19, .92);
}

.page-faq .faq-step__title {
  margin: 4px 0 5px;
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--mist);
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-q {
  margin-bottom: 10px;
  border: 1px solid rgba(30, 90, 72, .72);
  border-radius: var(--radius);
  background: rgba(11, 42, 34, .62);
  overflow: hidden;
  transition: border-color .22s var(--ease), background .22s var(--ease);
}

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

.page-faq .faq-q[open] {
  border-color: rgba(44, 242, 200, .45);
  background: rgba(18, 59, 49, .74);
}

.page-faq .faq-q__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
  transition: font-weight .2s var(--ease), color .2s var(--ease);
}

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

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

.page-faq .faq-q[open] .faq-q__summary {
  font-weight: 800;
}

.page-faq .faq-q__text {
  min-width: 0;
}

.page-faq .faq-q__mark {
  flex: 0 0 auto;
  margin-left: auto;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(147, 179, 170, .5);
  transition: border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-q__mark::before {
  content: "";
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 6px solid var(--mist);
  transition: transform .3s var(--ease), border-top-color .22s var(--ease);
}

.page-faq .faq-q[open] .faq-q__mark {
  border-color: var(--cyan);
  background: rgba(44, 242, 200, .1);
}

.page-faq .faq-q[open] .faq-q__mark::before {
  border-top-color: var(--cyan);
  transform: rotate(-180deg);
}

.page-faq .faq-q__body {
  padding: 0 16px 16px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-q__body p {
  margin: 0;
}

.page-faq .faq-q__body p + p {
  margin-top: 10px;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 8px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.page-faq .faq-figure--tall {
  max-width: 260px;
  margin-left: auto;
  margin-right: auto;
}

.page-faq .faq-figure--wide {
  margin-top: 4px;
  margin-bottom: 10px;
}

.page-faq .figure-cap {
  margin: 0 0 20px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 自查清单 ---------- */
.page-faq .faq-check {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-check__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(30, 90, 72, .6);
  background: rgba(11, 42, 34, .6);
}

.page-faq .faq-check__box {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cyan);
  padding-top: 2px;
}

.page-faq .faq-check__title {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-check__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact {
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--radius-lg);
}

.page-faq .faq-contact__title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(30, 90, 72, .66);
}

.page-faq .faq-contact__row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-faq .faq-contact__key {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-contact__val {
  font-size: 14px;
  line-height: 1.7;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-copy {
  flex: 0 0 auto;
  border-radius: 999px;
  white-space: nowrap;
  font-size: 12px;
}

.page-faq .faq-footnote {
  margin: 20px 0 0;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-footnote a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 桌面：左编号右问答 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-figure--tall {
    float: right;
    width: 34%;
    max-width: 280px;
    margin: 4px 0 18px 26px;
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 108px minmax(0, 1fr) auto;
    gap: 14px;
  }

  .page-faq .faq-contact__key {
    grid-column: auto;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-row {
    grid-template-columns: var(--faq-side) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-row__head {
    position: sticky;
    top: clamp(72px, 9vh, 104px);
  }

  .page-faq .faq-num {
    font-size: clamp(52px, 4.6vw, 72px);
  }

  .page-faq .faq-row__title {
    font-size: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-nav .toc-link,
  .page-faq .faq-q,
  .page-faq .faq-q__summary,
  .page-faq .faq-q__mark,
  .page-faq .faq-q__mark::before {
    transition: none;
  }
}