/* ============ FAQ 使用帮助 · 页面专属样式 ============ */
.page-faq {
  --faq-toc-w: 220px;
  --faq-radius: 18px;
  --faq-accent-border: rgba(57, 255, 20, .35);
  padding: 24px 0 64px;
}

.page-faq .container {
  max-width: 1280px;
  padding-left: 20px;
  padding-right: 20px;
}

/* ---- 面包屑 ---- */
.page-faq .breadcrumb {
  margin-bottom: 32px;
}

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

.page-faq .faq-breadcrumb__list .breadcrumb__item {
  font-size: 13px;
  color: var(--color-text-dim);
  display: inline-flex;
  align-items: center;
}

.page-faq .faq-breadcrumb__list .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--color-border);
}

.page-faq .faq-breadcrumb__list .breadcrumb__item a {
  color: var(--color-silver);
  text-decoration: none;
  transition: color .2s;
}

.page-faq .faq-breadcrumb__list .breadcrumb__item a:hover {
  color: var(--color-accent);
}

.page-faq .faq-breadcrumb__list .breadcrumb__item[aria-current="page"] {
  color: var(--color-accent);
}

/* ---- Hero ---- */
.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 32px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 28px;
  overflow: hidden;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .faq-hero__main {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.page-faq .faq-hero .section-label::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.page-faq .faq-hero .display-title {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.08;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--color-text);
  margin: 12px 0 16px;
}

.page-faq .faq-hero .section-lead {
  max-width: 640px;
  font-family: var(--font-editorial);
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-text-dim);
  margin: 0;
}

.page-faq .faq-hero__mark {
  display: none;
}

/* ---- 快速事实条 ---- */
.page-faq .faq-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 44px;
}

.page-faq .faq-fact {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--faq-radius);
  padding: 20px 20px 18px 28px;
  overflow: hidden;
}

.page-faq .faq-fact::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-accent);
  border-radius: 0 4px 4px 0;
}

.page-faq .faq-fact__kicker {
  display: block;
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-silver);
  margin-bottom: 6px;
}

.page-faq .faq-fact__value {
  display: block;
  font-family: var(--font-data);
  font-size: 34px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-fact__note {
  display: block;
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-text-dim);
  margin-top: 8px;
}

/* ---- 两列布局 ---- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

/* ---- 目录 ---- */
.page-faq .faq-toc {
  order: 1;
}

.page-faq .faq-toc__title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-silver);
  margin: 0 0 14px;
}

.page-faq .faq-toc__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.page-faq .faq-toc__list {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-toc__item a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  color: var(--color-text-dim);
  font-size: 15px;
  text-decoration: none;
  transition: border-color .25s var(--ease), color .25s, transform .25s var(--ease);
}

.page-faq .faq-toc__item a:hover,
.page-faq .faq-toc__item a:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-text);
  transform: translateX(4px);
}

.page-faq .faq-toc__index {
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
  flex-shrink: 0;
}

.page-faq .faq-toc__note {
  padding: 14px 16px;
  background: var(--color-bg-deep);
  border-radius: 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-dim);
}

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

/* ---- 问答区 ---- */
.page-faq .faq-content {
  order: 2;
}

.page-faq .faq-section {
  margin-bottom: 52px;
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  align-items: start;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.page-faq .faq-section__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--color-accent-soft);
  border: 1px solid var(--faq-accent-border);
  font-family: var(--font-data);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-accent);
}

.page-faq .faq-section__title {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--color-text);
  margin: 0 0 4px;
}

.page-faq .faq-section__desc {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-dim);
}

/* ---- FAQ 条目 ---- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.page-faq .faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--faq-radius);
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s;
}

.page-faq .faq-item[open] {
  border-color: var(--faq-accent-border);
  box-shadow: 0 4px 24px rgba(57, 255, 20, .05);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
  user-select: none;
  transition: background .2s;
}

.page-faq .faq-item__q:hover {
  background: rgba(57, 255, 20, .04);
}

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

.page-faq .faq-item__q::after {
  content: "";
  width: 18px;
  height: 18px;
  margin-left: auto;
  flex-shrink: 0;
  background:
    linear-gradient(var(--color-silver), var(--color-silver)) center / 12px 2px no-repeat;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  transition: background .3s, border-color .3s, transform .3s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  background:
    linear-gradient(var(--color-accent), var(--color-accent)) center / 12px 2px no-repeat,
    linear-gradient(var(--color-accent), var(--color-accent)) center / 2px 12px no-repeat;
  border-color: var(--color-accent);
  transform: rotate(180deg);
}

.page-faq .faq-item__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  border: 1px solid var(--faq-accent-border);
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
  flex-shrink: 0;
}

.page-faq .faq-item__text {
  flex: 1;
}

.page-faq .faq-item__a {
  padding: 2px 18px 18px 62px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-dim);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a strong {
  color: var(--color-text);
  font-weight: 600;
}

.page-faq .faq-item__a a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 255, 20, .3);
  transition: border-bottom-color .2s;
}

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

.page-faq .faq-check-list {
  padding: 0;
  margin: 8px 0 0;
  list-style: none;
  counter-reset: faq-check;
}

.page-faq .faq-check-list li {
  counter-increment: faq-check;
  position: relative;
  padding-left: 28px;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .faq-check-list li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-check-list li::before {
  content: counter(faq-check);
  position: absolute;
  left: 0;
  top: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 700;
}

/* ---- 高亮 callout ---- */
.page-faq .faq-callout {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  background: var(--color-bg-deep);
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-dim);
}

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

.page-faq .faq-callout__icon {
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
}

.page-faq .faq-callout a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 255, 20, .3);
}

/* ---- iOS 步骤 ---- */
.page-faq .faq-ios-steps {
  position: relative;
  background: var(--color-bg-deep);
  border: 1px solid var(--color-border);
  border-radius: var(--faq-radius);
  padding: 24px;
  margin-bottom: 20px;
  overflow: hidden;
}

.page-faq .faq-ios-steps::before {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(57, 255, 20, .08) 0%, transparent 70%);
  pointer-events: none;
}

.page-faq .faq-ios-steps__title {
  position: relative;
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--color-text);
  margin: 0 0 20px;
}

.page-faq .faq-ios-steps__list {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-ios-steps__list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 16px;
  background: var(--color-bg-card);
  border-radius: 14px;
  border: 1px solid var(--color-border);
}

.page-faq .faq-ios-steps__step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-bg-deep);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.page-faq .faq-ios-steps__text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-dim);
}

.page-faq .faq-ios-steps__text strong {
  color: var(--color-text);
  font-weight: 600;
}

.page-faq .faq-ios-steps__img {
  margin-top: 8px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

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

.page-faq .faq-ios-steps__img--small img {
  max-width: 420px;
  margin: 0 auto;
}

/* ---- 联系卡片 ---- */
.page-faq .faq-contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 20px;
}

.page-faq .faq-contact-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--faq-radius);
  padding: 22px 20px 20px;
  overflow: hidden;
  transition: border-color .3s, transform .3s var(--ease);
}

.page-faq .faq-contact-card:hover {
  border-color: var(--faq-accent-border);
  transform: translateY(-3px);
}

.page-faq .faq-contact-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--color-accent-soft);
  border: 1px solid var(--faq-accent-border);
  color: var(--color-accent);
  font-family: var(--font-data);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 14px;
}

.page-faq .faq-contact-card__title {
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-silver);
}

.page-faq .faq-contact-card__value {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  word-break: break-all;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-contact-card__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-dim);
}

/* ---- 联系注意事项 ---- */
.page-faq .faq-contact-note {
  border-left: 3px solid var(--color-warn);
  background: rgba(255, 200, 87, .06);
  border-radius: 0 14px 14px 0;
  padding: 18px 20px;
  margin-bottom: 20px;
}

.page-faq .faq-contact-note .pill {
  display: inline-block;
  margin-bottom: 10px;
}

.page-faq .faq-contact-note p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-dim);
}

.page-faq .faq-contact-note p:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-contact-note strong {
  color: var(--color-text);
  font-weight: 600;
}

.page-faq .faq-contact-note .btn-outline {
  margin-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  padding: 10px 18px;
  border: 1px solid var(--color-silver);
  border-radius: var(--radius-pill);
  color: var(--color-silver);
  font-size: 14px;
  font-weight: 600;
  transition: border-color .25s, color .25s, background-color .25s;
}

.page-faq .faq-contact-note .btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(57, 255, 20, .06);
}

/* ---- 隐私信任 ---- */
.page-faq .faq-trust {
  margin-top: 56px;
  padding: 22px 0 0;
  border-top: 1px solid var(--color-border);
}

.page-faq .faq-trust p {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-dim);
}

.page-faq .faq-trust a {
  color: var(--color-silver);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  transition: color .2s, border-color .2s;
}

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

/* ============ 桌面端 ============ */
@media (min-width: 900px) {
  .page-faq {
    padding: 40px 0 80px;
  }

  .page-faq .faq-hero {
    margin-bottom: 40px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 40px;
  }

  .page-faq .faq-hero__mark {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1;
    user-select: none;
    transform: skewX(-10deg);
    letter-spacing: -.04em;
  }

  .page-faq .faq-hero__q {
    font-size: 180px;
    color: var(--color-accent-soft);
    -webkit-text-stroke: 2px rgba(57, 255, 20, .4);
  }

  .page-faq .faq-hero__quest {
    font-size: 72px;
    color: rgba(57, 255, 20, .12);
    -webkit-text-stroke: 1px rgba(57, 255, 20, .5);
  }

  .page-faq .faq-facts {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-toc-w) minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 36px;
    order: 0;
    padding: 20px;
    background: rgba(11, 27, 61, .72);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: 20px;
  }

  .page-faq .faq-toc__list {
    gap: 4px;
  }

  .page-faq .faq-toc__item a {
    border: none;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 14px;
  }

  .page-faq .faq-toc__item a:hover,
  .page-faq .faq-toc__item a:focus-visible {
    background: rgba(57, 255, 20, .06);
    transform: none;
  }

  .page-faq .faq-toc__note {
    margin-top: 12px;
  }

  .page-faq .faq-section__head {
    grid-template-columns: 68px 1fr;
    gap: 20px;
    margin-bottom: 24px;
  }

  .page-faq .faq-section__index {
    width: 68px;
    height: 68px;
    border-radius: 18px;
    font-size: 30px;
  }

  .page-faq .faq-section__title {
    font-size: 26px;
  }

  .page-faq .faq-ios-steps__list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }

  .page-faq .faq-ios-steps__list li {
    flex-direction: column;
    gap: 10px;
  }

  .page-faq .faq-contact-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-faq .faq-contact-card {
    padding: 26px 22px 22px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__q::after,
  .page-faq .faq-contact-card,
  .page-faq .faq-toc__item a {
    transition: none;
  }

  .page-faq .faq-toc__item a:hover {
    transform: none;
  }
}