.page-faq {
  --faq-rail-w: 236px;
  --faq-sticky: calc(var(--topbar-h) + var(--nav-h) + 22px);
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  padding-bottom: 78px;
}

.page-faq::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 600px;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(30, 44, 82, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 44, 82, 0.5) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: 0.3;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 88%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 88%);
}

.page-faq .container {
  padding-top: 20px;
}

.page-faq .faq-crumbs {
  margin-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  max-width: 840px;
  padding: 24px 0 36px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(29px, 6.4vw, 46px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.88;
}

.page-faq .faq-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-meta__item {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-size: 13.5px;
  color: var(--muted);
}

.page-faq .faq-meta__num {
  font-size: 23px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--green);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 22px;
  min-width: 0;
}

.page-faq .faq-rail {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--glass);
  padding: 14px 12px;
  min-width: 0;
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-dim);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__list > li {
  flex: none;
}

.page-faq .faq-rail__link {
  display: block;
  white-space: nowrap;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13.5px;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-rail__link:hover {
  color: var(--text);
  border-color: var(--cyan);
}

.page-faq .faq-rail__link[aria-current="true"] {
  color: var(--green);
  border-color: rgba(0, 229, 160, 0.55);
  background: rgba(0, 229, 160, 0.08);
}

.page-faq .faq-flow {
  display: grid;
  gap: 22px;
  min-width: 0;
}

/* ---------- 分块 ---------- */
.page-faq .faq-block {
  position: relative;
  overflow: hidden;
  padding: 22px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(15, 24, 50, 0.96), rgba(15, 24, 50, 0.86));
  scroll-margin-top: calc(var(--topbar-h) + var(--nav-h) + 20px);
  min-width: 0;
}

.page-faq .faq-block::after {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  opacity: 0.68;
  background: var(--green);
}

.page-faq .faq-block--entry::after {
  background: linear-gradient(180deg, var(--green), var(--cyan));
}

.page-faq .faq-block--account::after {
  background: var(--green);
}

.page-faq .faq-block--data::after {
  background: var(--cyan);
}

.page-faq .faq-block--pass::after {
  background: var(--orange);
}

.page-faq .faq-block--trouble::after {
  background: var(--purple-soft);
}

.page-faq .faq-block--next::after {
  background: var(--purple);
}

.page-faq .faq-block--next {
  background: linear-gradient(135deg, rgba(138, 92, 246, 0.16), rgba(15, 24, 50, 0.95) 64%);
}

.page-faq .faq-block__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.page-faq .faq-block__idx {
  flex: none;
  margin-top: 2px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--green);
}

.page-faq .faq-block--account .faq-block__idx {
  color: var(--green);
  border-color: rgba(0, 229, 160, 0.4);
}

.page-faq .faq-block--data .faq-block__idx {
  color: var(--cyan);
  border-color: rgba(61, 220, 255, 0.4);
}

.page-faq .faq-block--pass .faq-block__idx {
  color: var(--orange);
  border-color: rgba(255, 138, 61, 0.42);
}

.page-faq .faq-block--trouble .faq-block__idx {
  color: var(--purple-soft);
  border-color: rgba(192, 140, 255, 0.42);
}

.page-faq .faq-block__title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-block__note {
  margin: 9px 0 0;
  max-width: 64ch;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.82;
}

/* ---------- 入口步骤 ---------- */
.page-faq .path-steps {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-faq .path-step {
  display: grid;
  gap: 8px;
  padding: 16px 16px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(7, 12, 27, 0.55);
}

.page-faq .path-step__num {
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--green);
}

.page-faq .path-step:last-child .path-step__num {
  color: var(--cyan);
}

.page-faq .path-step__title {
  margin: 0;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--text);
}

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

.page-faq .path-chain {
  display: inline-block;
  margin: 0 0 16px;
  padding: 10px 16px;
  border: 1px dashed rgba(0, 229, 160, 0.45);
  border-radius: 999px;
  background: rgba(0, 229, 160, 0.07);
  color: var(--text);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-faq .path-legacy {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.82;
}

.page-faq .path-legacy__tag {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border-radius: 4px;
  background: rgba(255, 138, 61, 0.14);
  color: var(--orange);
  font-size: 11.5px;
  letter-spacing: 0.06em;
}

.page-faq .faq-figures {
  display: grid;
  gap: 16px;
  margin: 22px 0 0;
}

.page-faq .figure {
  margin: 0;
  min-width: 0;
}

.page-faq .figure__media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
}

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

.page-faq .figure__caption {
  margin-top: 10px;
  color: var(--muted-dim);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.6;
}

/* ---------- 折叠问答 ---------- */
.page-faq .accordion {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-faq .accordion__item {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(7, 12, 27, 0.5);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .accordion__item:has(.accordion__trigger[aria-expanded="true"]) {
  border-color: var(--line);
  background: rgba(7, 12, 27, 0.74);
}

.page-faq .accordion__header {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 15px 16px;
  border: 0;
  background: none;
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  transition: color 0.18s ease;
}

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

.page-faq .accordion__trigger[aria-expanded="true"] {
  color: var(--green);
}

.page-faq .accordion__icon {
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: -4px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transform-origin: center;
  transition: transform 0.22s ease, margin-top 0.22s ease;
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__icon {
  margin-top: 4px;
  transform: rotate(-135deg);
}

.page-faq .accordion__panel {
  padding: 0 16px 16px;
}

.page-faq .accordion__panel p {
  margin: 0;
  max-width: 66ch;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.88;
}

.page-faq .accordion__panel a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 220, 255, 0.4);
}

.page-faq .accordion__panel a:hover {
  color: var(--green);
  border-bottom-color: rgba(0, 229, 160, 0.5);
}

/* ---------- 后续处理 ---------- */
.page-faq .faq-next {
  display: grid;
  gap: 18px;
}

.page-faq .faq-next h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-next p {
  margin: 10px 0 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.86;
}

.page-faq .faq-next .btn {
  justify-self: start;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-block {
    padding: 30px 30px 26px;
  }

  .page-faq .faq-block__title {
    font-size: 23px;
  }

  .page-faq .faq-next {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 34px;
  }
}

@media (min-width: 720px) {
  .page-faq .path-steps {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .page-faq .path-steps::before {
    content: "";
    position: absolute;
    top: 44px;
    left: calc(50% - 15px);
    width: 30px;
    height: 2px;
    background: linear-gradient(90deg, var(--green), var(--cyan));
  }
}

@media (min-width: 880px) {
  .page-faq .faq-figures {
    grid-template-columns: 1.12fr 1fr;
    gap: 20px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-sticky);
    padding: 18px 16px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-faq .faq-rail__list > li {
    flex: 1 1 auto;
  }

  .page-faq .faq-rail__link {
    padding: 9px 4px 9px 14px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    white-space: normal;
    transition: color 0.18s ease, border-color 0.18s ease;
  }

  .page-faq .faq-rail__link:hover {
    border-left-color: var(--cyan);
  }

  .page-faq .faq-rail__link[aria-current="true"] {
    background: none;
    border-left-color: var(--green);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}