.page-faq {
  --faq-ring: clamp(36px, 9vw, 52px);
  --faq-block: clamp(30px, 6vw, 56px);
  padding-block: 26px 0;
  color: var(--white);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-faq .crumbs {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .crumbs__link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .crumbs__link:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-faq .crumbs__sep {
  margin-inline: 8px;
  color: var(--line);
}

.page-faq .crumbs__current {
  color: var(--white);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(28px, 5vw, 48px) clamp(30px, 5vw, 52px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -60px;
  width: min(420px, 60vw);
  aspect-ratio: 1;
  border: 1px solid var(--line-soft);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 10px;
  right: -10px;
  width: min(280px, 40vw);
  aspect-ratio: 1;
  border: 1px solid rgba(47, 227, 192, 0.22);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero__kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
}

.page-faq .faq-hero__range {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-hero h1 {
  position: relative;
  z-index: 1;
  max-width: 16em;
  margin: 0 0 20px;
}

.page-faq .faq-hero .lede {
  max-width: 62ch;
  margin: 0;
  color: var(--muted);
  font-size: clamp(16px, 2.4vw, 18px);
  line-height: 1.75;
}

.page-faq .faq-hero__metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .metric {
  background: var(--ink-2);
  padding: 16px 18px;
}

.page-faq .metric__cap {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .metric__num {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 34px);
  font-weight: 600;
  color: var(--neon);
  line-height: 1.1;
}

.page-faq .metric__num span {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
  margin-left: 6px;
  letter-spacing: 0.04em;
}

/* ============ 场景检索 ============ */
.page-faq .faq-scout {
  margin-block: var(--faq-block);
  padding: clamp(22px, 4vw, 34px) clamp(20px, 3.4vw, 38px);
  background:
    radial-gradient(circle at 92% 8%, rgba(47, 227, 192, 0.16), transparent 58%),
    linear-gradient(180deg, var(--ink-2), rgba(12, 21, 51, 0.4));
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-scout__eyebrow {
  margin: 0 0 12px;
}

.page-faq .faq-scout h2 {
  margin: 0 0 10px;
  max-width: 20em;
}

.page-faq .faq-scout__note {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
  max-width: 56ch;
}

.page-faq .faq-scout__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  display: inline-block;
  padding: 9px 14px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

/* ============ 双栏骨架 ============ */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.page-faq .faq-toc {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-faq .faq-toc .toc__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .faq-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc__list .toc__item {
  margin: 0;
}

.page-faq .faq-toc .toc__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-toc .toc__link:hover {
  color: var(--white);
  border-color: var(--line);
}

.page-faq .faq-toc .toc__link.is-active {
  color: var(--neon);
  border-color: var(--line);
  background: rgba(47, 227, 192, 0.06);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

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

/* ============ 章节通用 ============ */
.page-faq .faq-sec {
  padding-block: var(--faq-block);
  border-top: 1px solid var(--line);
}

.page-faq .faq-sec:first-child {
  border-top: none;
  padding-top: 0;
}

.page-faq .faq-sec__num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-faq .faq-sec h2 {
  margin: 0 0 14px;
  max-width: 20em;
}

.page-faq .faq-sec__lede {
  margin: 0 0 26px;
  max-width: 62ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.78;
}

.page-faq .faq-sec__lede a,
.page-faq .faq-sec__note a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 192, 0.4);
  transition: border-color 0.18s var(--ease);
}

.page-faq .faq-sec__lede a:hover,
.page-faq .faq-sec__note a:hover {
  border-bottom-color: var(--neon);
}

.page-faq .faq-sec__note {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-figure {
  margin: 0 0 30px;
}

/* ============ 四段教程 ============ */
.page-faq .track-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .track {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .track__ring {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--faq-ring);
  height: var(--faq-ring);
  border: 1px solid var(--neon);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(47, 227, 192, 0.08);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--neon);
}

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

.page-faq .track__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 3vw, 21px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-faq .track__text p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .track .tag {
  grid-column: 2;
  justify-self: start;
}

/* ============ 三个高频操作 ============ */
.page-faq .step-flow {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-faq .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 18px;
  align-items: start;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .step__ring {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--faq-ring);
  height: var(--faq-ring);
  border: 1px solid var(--line);
  border-radius: 50%;
  outline: 1px solid rgba(255, 154, 60, 0.45);
  outline-offset: 3px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--orange);
}

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

.page-faq .step__title {
  margin: 4px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(18px, 3vw, 22px);
  font-weight: 700;
  color: var(--white);
}

.page-faq .step .checklist {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step .checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .step .checklist__box {
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  cursor: pointer;
  padding: 0;
  position: relative;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .step .checklist__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(42deg) scale(0);
  transition: transform 0.18s var(--ease);
}

.page-faq .step .checklist__box:hover {
  border-color: var(--neon);
}

.page-faq .step .checklist__item.is-done .checklist__box {
  background: var(--neon);
  border-color: var(--neon);
}

.page-faq .step .checklist__item.is-done .checklist__box::after {
  transform: rotate(42deg) scale(1);
}

.page-faq .step .checklist__text {
  color: var(--white);
  font-size: 16px;
  line-height: 1.7;
}

.page-faq .step .checklist__item.is-done .checklist__text {
  color: var(--muted);
}

.page-faq .step__tip {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

.page-faq .step--with-figure .step__figure {
  grid-column: 2;
  margin: 22px 0 0;
  max-width: 320px;
}

/* ============ 帮助中心索引 ============ */
.page-faq .index-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .index-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 24px;
  background: var(--ink-2);
  transition: background-color 0.2s var(--ease);
}

.page-faq .index-card:hover {
  background: #0f1b40;
}

.page-faq .index-card__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .index-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .index-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.page-faq .index-card__list li {
  position: relative;
  padding-left: 16px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.page-faq .index-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--neon);
}

.page-faq .index-card__count {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ============ 反馈四项 ============ */
.page-faq .req-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0 0 24px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .req {
  padding: 20px 20px 22px;
  background: var(--ink-2);
  border-top: 2px solid var(--orange);
}

.page-faq .req__key {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--neon);
}

.page-faq .req p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

.page-faq .copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--neon);
  background: rgba(47, 227, 192, 0.05);
}

.page-faq .copy-row__value {
  flex: 1 1 260px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--white);
  word-break: break-word;
}

.page-faq .copy-btn {
  flex: 0 0 auto;
  padding: 10px 18px;
  border: 1px solid var(--neon);
  background: transparent;
  color: var(--neon);
  font-family: var(--font-sans);
  font-size: 14px;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .copy-btn:hover {
  background: var(--neon);
  color: var(--ink);
}

.page-faq .copy-btn.is-copied {
  background: var(--neon-soft);
  border-color: var(--neon-soft);
  color: var(--ink);
}

/* ============ 回复节奏 ============ */
.page-faq .resp-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .resp {
  position: relative;
  padding: 26px 22px 28px;
  background: var(--ink-2);
  overflow: hidden;
}

.page-faq .resp::after {
  content: "";
  position: absolute;
  right: -46px;
  top: -46px;
  width: 140px;
  height: 140px;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.page-faq .resp__num {
  position: relative;
  z-index: 1;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(40px, 9vw, 58px);
  font-weight: 600;
  line-height: 1;
  color: var(--neon);
}

.page-faq .resp__num span {
  display: block;
  margin-top: 8px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .resp__title {
  position: relative;
  z-index: 1;
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .resp p:last-child {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-faq .faq-hero__metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

  .page-faq .track .tag {
    grid-column: 3;
    justify-self: end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-grid {
    grid-template-columns: 212px minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 96px;
    border-top: none;
    padding-top: 0;
    border-left: 1px solid var(--line);
    padding-left: 18px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .faq-toc .toc__link {
    padding: 8px 10px;
  }

  .page-faq .index-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .req-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 1180px) {
  .page-faq .step--with-figure {
    grid-template-columns: auto minmax(0, 1fr) 300px;
  }

  .page-faq .step--with-figure .step__figure {
    grid-column: 3;
    grid-row: 1;
    margin: 4px 0 0;
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}