/* ===== 帮助中心 · 页面专属样式 ===== */
.page-faq {
  --faq-line: rgba(11, 13, 16, 0.16);
  --faq-line-dark: rgba(242, 237, 228, 0.16);
  --faq-read: 68ch;
  --faq-num-w: 3.25rem;
  --faq-ink-body: rgba(242, 237, 228, 0.84);
}

/* ---------- 首屏：文档式页头 ---------- */
.page-faq .faq-intro {
  padding-block: 2.5rem 3rem;
  overflow: hidden;
}

.page-faq .faq-intro__crumbs {
  margin-bottom: 1.75rem;
}

.page-faq .faq-intro__crumbs .breadcrumbs__link {
  color: var(--grey-ink);
}

.page-faq .faq-intro__crumbs .breadcrumbs__sep {
  color: rgba(201, 205, 210, 0.45);
}

.page-faq .faq-intro__crumbs .breadcrumbs__current {
  color: var(--paper);
}

.page-faq .faq-intro__grid {
  display: grid;
  gap: 1.75rem;
}

.page-faq .faq-intro__figure {
  margin: 0;
}

.page-faq .faq-intro__figure .media-frame__img {
  filter: saturate(0.88) contrast(1.06);
}

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

.page-faq .faq-intro__text .eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-intro__title {
  margin: 0.7rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 7.5vw, 3.2rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-intro__lede {
  margin: 0;
  max-width: var(--faq-read);
  font-size: 1rem;
  line-height: 1.78;
  color: var(--grey-ink);
  overflow-wrap: anywhere;
}

/* 首屏节奏读数 */
.page-faq .faq-quick {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--faq-line-dark);
  background: var(--faq-line-dark);
}

.page-faq .faq-quick__item {
  padding: 0.95rem 0.9rem 1.05rem;
  background: var(--ink);
}

.page-faq .faq-quick__value {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.35rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-faq .faq-quick__value--amber {
  color: var(--amber);
}

.page-faq .faq-quick__label {
  display: block;
  margin-top: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--grey-ink);
}

/* ---------- 分组锚点条 ---------- */
.page-faq .faq-anchors {
  position: sticky;
  top: 3.25rem;
  z-index: 6;
  background: rgba(11, 13, 16, 0.94);
  border-block: 1px solid var(--faq-line-dark);
  backdrop-filter: blur(8px);
}

.page-faq .faq-anchors__nav {
  display: flex;
  gap: 0.15rem;
  overflow-x: auto;
  padding-block: 0.35rem;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-anchor {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.55rem 0.7rem;
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--grey-ink);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-anchor:hover,
.page-faq .faq-anchor:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--signal);
}

.page-faq .faq-anchor:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-anchor__num {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: var(--amber);
}

/* ---------- 分组通用 ---------- */
.page-faq .faq-group {
  padding-block: 3.25rem;
  scroll-margin-top: 7rem;
}

.page-faq .faq-group--paper {
  color: var(--ink);
}

.page-faq .faq-group--ink {
  color: var(--paper);
}

.page-faq .faq-group--subred {
  color: var(--paper);
}

.page-faq .faq-group__head {
  display: grid;
  gap: 0.65rem;
  margin-bottom: 1.6rem;
  max-width: 46rem;
}

.page-faq .faq-group__index {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--signal);
}

.page-faq .faq-group--ink .faq-group__index,
.page-faq .faq-group--subred .faq-group__index {
  color: var(--amber);
}

.page-faq .faq-group__index::before {
  content: "";
  width: 1.4rem;
  height: 2px;
  background: var(--signal);
  flex: 0 0 auto;
}

.page-faq .faq-group--ink .faq-group__index::before,
.page-faq .faq-group--subred .faq-group__index::before {
  background: var(--amber);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 5.2vw, 2.1rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: inherit;
}

.page-faq .faq-group__lede {
  margin: 0;
  max-width: var(--faq-read);
  font-size: 0.95rem;
  line-height: 1.78;
}

.page-faq .faq-group--paper .faq-group__lede {
  color: var(--stone);
}

.page-faq .faq-group--ink .faq-group__lede,
.page-faq .faq-group--subred .faq-group__lede {
  color: var(--grey-ink);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-accordion {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-group--ink .faq-accordion,
.page-faq .faq-group--subred .faq-accordion {
  border-top-color: var(--faq-line-dark);
}

.page-faq .faq-accordion .accordion__item {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group--ink .faq-accordion .accordion__item,
.page-faq .faq-group--subred .faq-accordion .accordion__item {
  border-bottom-color: var(--faq-line-dark);
}

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

.page-faq .faq-accordion .accordion__trigger {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 1.75rem;
  column-gap: 0.75rem;
  row-gap: 0.3rem;
  width: 100%;
  padding: 0.95rem 0;
  background: none;
  border: 0;
  text-align: left;
  color: inherit;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.65;
  cursor: pointer;
  transition: color 180ms var(--ease);
}

.page-faq .faq-accordion .accordion__trigger:hover .accordion__label {
  color: var(--signal);
}

.page-faq .faq-group--ink .faq-accordion .accordion__trigger:hover .accordion__label,
.page-faq .faq-group--subred .faq-accordion .accordion__trigger:hover .accordion__label {
  color: var(--cyan);
}

.page-faq .faq-accordion .accordion__trigger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-accordion .accordion__index {
  grid-column: 1;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-faq .faq-group--ink .faq-accordion .accordion__index,
.page-faq .faq-group--subred .faq-accordion .accordion__index {
  color: var(--grey-ink);
}

.page-faq .faq-accordion .accordion__label {
  grid-column: 1;
  grid-row: 2;
  font-weight: 500;
  color: inherit;
  transition: color 180ms var(--ease);
}

.page-faq .faq-accordion .accordion__icon {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  justify-self: end;
  position: relative;
  width: 1.6rem;
  height: 1.6rem;
  border: 1px solid var(--faq-line);
  border-radius: 50%;
  color: var(--stone);
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .faq-group--ink .faq-accordion .accordion__icon,
.page-faq .faq-group--subred .faq-accordion .accordion__icon {
  border-color: var(--faq-line-dark);
  color: var(--grey-ink);
}

.page-faq .faq-accordion .accordion__icon::before,
.page-faq .faq-accordion .accordion__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform 180ms var(--ease), opacity 180ms var(--ease);
}

.page-faq .faq-accordion .accordion__icon::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .faq-accordion .accordion__icon::after {
  width: 1.5px;
  height: 10px;
}

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

.page-faq .faq-group--ink .faq-accordion .accordion__trigger[aria-expanded="true"] .accordion__icon,
.page-faq .faq-group--subred .faq-accordion .accordion__trigger[aria-expanded="true"] .accordion__icon {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-accordion .accordion__trigger[aria-expanded="true"] .accordion__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-accordion .accordion__panel {
  padding: 0 0 1.15rem 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--stone);
}

.page-faq .faq-group--ink .faq-accordion .accordion__panel,
.page-faq .faq-group--subred .faq-accordion .accordion__panel {
  color: var(--faq-ink-body);
}

.page-faq .faq-accordion .accordion__panel p {
  margin: 0;
  max-width: var(--faq-read);
}

.page-faq .faq-accordion .accordion__panel .link-inline {
  color: var(--signal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-group--ink .faq-accordion .accordion__panel .link-inline,
.page-faq .faq-group--subred .faq-accordion .accordion__panel .link-inline {
  color: var(--cyan);
}

/* 引用格式示例 */
.page-faq .faq-code {
  margin: 1.1rem 0 0;
  padding: 1rem 1.1rem;
  max-width: 30rem;
  background: var(--ink);
  color: var(--paper);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--r-organic-sm) var(--r-organic-sm) 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.9;
  letter-spacing: 0.01em;
  overflow-x: auto;
  white-space: pre;
  -webkit-overflow-scrolling: touch;
}

/* ---------- 勘误区布局 ---------- */
.page-faq .faq-erratum__grid {
  display: grid;
  gap: 2rem;
}

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

.page-faq .faq-erratum__figure {
  margin: 0;
  max-width: 26rem;
}

.page-faq .faq-erratum__figure .media-frame__img {
  filter: saturate(0.82) contrast(1.04);
}

.page-faq .faq-erratum__figure .media-frame__caption {
  color: var(--grey-ink);
}

/* 无匹配答案提示块 */
.page-faq .faq-support {
  margin-top: 1.9rem;
  padding: 1.15rem 1.25rem 1.35rem;
  border: 1px solid rgba(79, 227, 208, 0.4);
  border-radius: var(--r-organic-sm);
  background: rgba(79, 227, 208, 0.07);
}

.page-faq .faq-support__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.05rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-support__text {
  margin: 0;
  max-width: var(--faq-read);
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--faq-ink-body);
}

.page-faq .faq-contact {
  display: grid;
  gap: 0.6rem;
  margin-top: 1.1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--faq-line-dark);
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr);
  gap: 0.75rem;
  align-items: baseline;
}

.page-faq .faq-contact__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--grey-ink);
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 延伸入口索引 ---------- */
.page-faq .faq-more {
  padding-block: 2.75rem 3.5rem;
  color: var(--ink);
}

.page-faq .faq-more__title {
  margin: 0 0 1.4rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.25rem, 4.4vw, 1.75rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-more__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-more__row {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-more__link {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: 1rem;
  align-items: baseline;
  padding: 1rem 0.25rem;
  text-decoration: none;
  color: var(--ink);
  transition: background-color 180ms var(--ease), padding-left 180ms var(--ease);
}

.page-faq .faq-more__link:hover,
.page-faq .faq-more__link:focus-visible {
  background: rgba(25, 27, 30, 0.04);
  padding-left: 0.6rem;
}

.page-faq .faq-more__link:focus-visible {
  outline: 2px solid var(--deep-cyan);
  outline-offset: 2px;
}

.page-faq .faq-more__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--signal);
}

.page-faq .faq-more__text {
  display: grid;
  gap: 0.3rem;
  min-width: 0;
}

.page-faq .faq-more__name {
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.5;
}

.page-faq .faq-more__meta {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 响应式增强 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-quick {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 6rem minmax(0, 1fr);
  }
}

@media (min-width: 768px) {
  .page-faq .faq-intro {
    padding-block: 3.5rem 4rem;
  }

  .page-faq .faq-group {
    padding-block: 4.25rem;
    scroll-margin-top: 8rem;
  }

  .page-faq .faq-accordion .accordion__trigger {
    grid-template-columns: var(--faq-num-w) minmax(0, 1fr) 1.75rem;
    column-gap: 1.1rem;
    row-gap: 0;
    padding: 1.1rem 0;
    font-size: 1rem;
  }

  .page-faq .faq-accordion .accordion__index {
    grid-column: 1;
    grid-row: 1;
    padding-top: 0.32rem;
  }

  .page-faq .faq-accordion .accordion__label {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .faq-accordion .accordion__icon {
    grid-column: 3;
    grid-row: 1;
    align-self: start;
    margin-top: 0.12rem;
  }

  .page-faq .faq-accordion .accordion__panel {
    padding: 0 0 1.3rem calc(var(--faq-num-w) + 1.1rem);
  }

  .page-faq .faq-anchors__nav {
    gap: 0.6rem;
    padding-block: 0.4rem;
  }

  .page-faq .faq-anchor {
    padding: 0.6rem 1rem;
    font-size: 0.86rem;
  }

  .page-faq .faq-more__link {
    grid-template-columns: 3.25rem minmax(0, 1fr);
    padding: 1.15rem 0.25rem;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-intro__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 3.5rem;
    align-items: center;
  }

  .page-faq .faq-intro__figure {
    margin-top: 1.25rem;
  }

  .page-faq .faq-erratum__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 3rem;
    align-items: start;
  }

  .page-faq .faq-erratum__figure {
    max-width: none;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-quick__value {
    font-size: 1.6rem;
  }

  .page-faq .faq-group__head {
    margin-bottom: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-anchor,
  .page-faq .faq-accordion .accordion__trigger,
  .page-faq .faq-accordion .accordion__label,
  .page-faq .faq-accordion .accordion__icon,
  .page-faq .faq-accordion .accordion__icon::before,
  .page-faq .faq-accordion .accordion__icon::after,
  .page-faq .faq-more__link {
    transition-duration: 120ms;
  }
}