.page-faq {
  --faq-sticky-top: calc(var(--jn-header-h) + 20px);
  background: var(--jn-paper);
  color: var(--jn-text);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq__hero {
  position: relative;
  padding: 24px 0 42px;
  background:
    radial-gradient(120% 90% at 90% 0%, rgba(63, 240, 162, .16) 0%, rgba(63, 240, 162, 0) 56%),
    linear-gradient(158deg, #0C2430 0%, #08181F 58%, #10333F 100%);
  color: var(--jn-paper);
  overflow: hidden;
}

.page-faq__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--jn-mist), transparent);
  opacity: .55;
}

.page-faq__hero-grid {
  display: grid;
  gap: 26px;
}

@media (min-width: 960px) {
  .page-faq__hero-grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: 44px;
  }
}

.page-faq .jn-breadcrumb {
  margin: 0 0 20px;
}

.page-faq .jn-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--jn-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(245, 240, 230, .58);
}

.page-faq .jn-breadcrumb li::after {
  content: "/";
  margin-left: 8px;
  opacity: .4;
}

.page-faq .jn-breadcrumb li:last-child::after {
  content: "";
  margin: 0;
}

.page-faq .jn-breadcrumb a {
  color: rgba(245, 240, 230, .8);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--jn-ease), color .2s var(--jn-ease);
}

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

.page-faq .jn-breadcrumb [aria-current="page"] {
  color: var(--jn-green);
}

.page-faq__eyebrow {
  margin: 0 0 12px;
  font-family: var(--jn-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: rgba(245, 240, 230, .6);
}

.page-faq__eyebrow--dark {
  color: var(--jn-gold-ink);
}

.page-faq__title {
  margin: 0 0 18px;
  font-family: var(--jn-font-display);
  font-weight: 200;
  font-size: clamp(30px, 5.4vw, 56px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--jn-paper);
}

.page-faq__lead {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--jn-on-dark);
}

.page-faq__quick {
  display: grid;
  gap: 14px;
}

.page-faq__search {
  display: block;
}

.page-faq__search-input {
  box-sizing: border-box;
  width: 100%;
  padding: 15px 16px;
  border: 1px solid var(--jn-line);
  border-radius: var(--jn-radius);
  background: rgba(255, 255, 255, .1);
  color: var(--jn-paper);
  font-family: var(--jn-font-mono);
  font-size: 14px;
  letter-spacing: .01em;
  outline: none;
  transition: border-color .2s var(--jn-ease), background .2s var(--jn-ease);
}

.page-faq__search-input::placeholder {
  color: rgba(245, 240, 230, .48);
}

.page-faq__search-input:focus {
  border-color: var(--jn-green);
  background: rgba(255, 255, 255, .16);
}

.page-faq__hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq__stat {
  padding: 12px 12px 10px;
  border: 1px solid var(--jn-line);
  border-radius: var(--jn-radius-sm);
  background: rgba(255, 255, 255, .06);
}

.page-faq__stat-num {
  display: block;
  font-family: var(--jn-font-mono);
  font-size: clamp(20px, 5vw, 26px);
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--jn-green);
}

.page-faq__stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(245, 240, 230, .62);
}

/* ---------- 三步上手 ---------- */
.page-faq__steps {
  padding: 48px 0 18px;
  background: var(--jn-paper);
}

.page-faq__steps-grid {
  display: grid;
  gap: 30px;
}

@media (min-width: 980px) {
  .page-faq__steps-grid {
    grid-template-columns: 1fr .92fr;
    gap: 48px;
    align-items: start;
  }
}

.page-faq__h2 {
  margin: 0 0 24px;
  font-family: var(--jn-font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.25;
  letter-spacing: -.02em;
  color: var(--jn-ink);
}

.page-faq__step-list {
  display: grid;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq__step {
  position: relative;
  padding-left: 52px;
}

.page-faq__step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 16px;
  top: 40px;
  bottom: -18px;
  width: 1px;
  background: linear-gradient(180deg, var(--jn-line-strong), rgba(156, 198, 196, .1));
}

.page-faq__step-num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(63, 240, 162, .38);
  border-radius: 50%;
  background: var(--jn-ink);
  color: var(--jn-green);
  font-family: var(--jn-font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.page-faq__step h3 {
  margin: 2px 0 8px;
  font-family: var(--jn-font-body);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--jn-text);
}

.page-faq__step p {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--jn-muted);
}

.page-faq__figure {
  margin: 0;
}

.page-faq__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--jn-line);
  border-radius: var(--jn-radius);
  background: var(--jn-night);
  object-fit: cover;
}

.page-faq__figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--jn-muted);
}

/* ---------- 主题正文 ---------- */
.page-faq__body {
  padding: 30px 0 60px;
  background: var(--jn-paper);
}

.page-faq__layout {
  display: grid;
  gap: 26px;
}

@media (min-width: 1000px) {
  .page-faq__layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }
}

.page-faq__toc {
  display: none;
}

@media (min-width: 1000px) {
  .page-faq__toc {
    display: block;
    position: sticky;
    top: var(--faq-sticky-top);
    padding-left: 18px;
    border-left: 1px solid var(--jn-line);
  }
}

.page-faq__toc-title {
  margin: 0 0 14px;
  font-family: var(--jn-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--jn-muted);
}

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

.page-faq__toc-link {
  display: flex;
  gap: 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--jn-text);
  text-decoration: none;
  transition: color .2s var(--jn-ease);
}

.page-faq__toc-link span {
  font-family: var(--jn-font-mono);
  font-size: 12px;
  color: var(--jn-gold-ink);
  font-variant-numeric: tabular-nums;
}

.page-faq__toc-link:hover {
  color: var(--jn-green-deep);
}

.page-faq__topics {
  min-width: 0;
}

.page-faq [data-filter-empty] {
  display: block;
  margin: 0 0 26px;
  padding: 18px;
  border: 1px dashed var(--jn-line-strong);
  border-radius: var(--jn-radius);
  background: rgba(255, 255, 255, .5);
  font-size: 14px;
  color: var(--jn-muted);
}

.page-faq [data-filter-empty][hidden] {
  display: none;
}

.page-faq__topic {
  margin: 0 0 44px;
  scroll-margin-top: calc(var(--jn-header-h) + 26px);
}

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

.page-faq__topic-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}

.page-faq__topic-index {
  font-family: var(--jn-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--jn-gold-ink);
  font-variant-numeric: tabular-nums;
}

.page-faq__topic-title {
  margin: 0;
  font-family: var(--jn-font-body);
  font-size: clamp(19px, 2.6vw, 24px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--jn-ink);
}

.page-faq__topic-sub {
  margin: 0 0 16px;
  max-width: 38em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--jn-muted);
}

.page-faq__inline-figure {
  margin: 0 0 20px;
}

.page-faq__inline-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--jn-line);
  border-radius: var(--jn-radius);
  background: var(--jn-night);
  object-fit: cover;
}

@media (min-width: 1000px) {
  .page-faq__inline-figure {
    max-width: 640px;
  }
}

/* ---------- 折叠条目 ---------- */
.page-faq__item {
  border-bottom: 1px solid var(--jn-line);
}

.page-faq__item summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 4px 16px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--jn-font-body);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -.005em;
  color: var(--jn-text);
  transition: color .2s var(--jn-ease);
}

.page-faq__item summary::-webkit-details-marker {
  display: none;
}

.page-faq__item summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 2px;
  background: rgba(156, 198, 196, .6);
  transition: background .2s var(--jn-ease);
}

.page-faq__item summary::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--jn-font-mono);
  font-size: 17px;
  line-height: 1.4;
  color: var(--jn-ink);
  transition: color .2s var(--jn-ease);
}

.page-faq__item[open] summary::before {
  background: var(--jn-green);
}

.page-faq__item[open] summary::after {
  content: "–";
  color: var(--jn-green-deep);
}

.page-faq__item summary:hover {
  color: var(--jn-ink);
}

.page-faq__answer {
  padding: 0 4px 20px 16px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--jn-muted);
}

.page-faq__answer a {
  color: var(--jn-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color .2s var(--jn-ease);
}

.page-faq__answer a:hover {
  color: var(--jn-green-deep);
}

@media (max-width: 520px) {
  .page-faq__title {
    font-size: 30px;
  }

  .page-faq__hero-stats {
    gap: 8px;
  }

  .page-faq__stat {
    padding: 10px 9px 9px;
  }

  .page-faq__stat-label {
    font-size: 11px;
    letter-spacing: .03em;
  }

  .page-faq__step {
    padding-left: 46px;
  }

  .page-faq__item summary {
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq__search-input,
  .page-faq__item summary::before,
  .page-faq__item summary::after,
  .page-faq .jn-breadcrumb a {
    transition: none;
  }
}