/* ===== 帮助中心 · 页面专属样式 ===== */
.page-faq {
  --fq-rule: rgba(52, 245, 197, 0.3);
  --fq-gap: clamp(20px, 3vw, 40px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

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

/* ---------- 首屏 ---------- */
.page-faq .fq-hero {
  padding-block: clamp(18px, 3vw, 34px) clamp(28px, 5vw, 56px);
}

.page-faq .fq-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 36px);
}

.page-faq .fq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
  align-items: end;
}

.page-faq .fq-hero__lead .display {
  margin: 12px 0 18px;
  max-width: 15em;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-faq .fq-hero__lead .lede {
  max-width: 46ch;
}

.page-faq .fq-hero__media {
  margin: 0;
}

@media (min-width: 900px) {
  .page-faq .fq-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    column-gap: clamp(32px, 5vw, 72px);
  }
}

/* ---------- 分类跳转 ---------- */
.page-faq .fq-index {
  padding-block: clamp(18px, 3vw, 28px);
  border-top: 1px solid var(--turf-line);
}

.page-faq .fq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--smoke);
}

.page-faq .fq-index__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .fq-index__chips .chip {
  text-decoration: none;
}

.page-faq .fq-index__chips .chip:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

/* ---------- 章节骨架 ---------- */
.page-faq .fq-section {
  border-top: 1px solid var(--fq-rule);
  padding-block: clamp(30px, 5vw, 62px);
  scroll-margin-top: calc(var(--bar-h) + 20px);
}

.page-faq .fq-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 32px);
}

.page-faq .fq-section__main {
  min-width: 0;
}

.page-faq .fq-section__head {
  margin-bottom: clamp(18px, 2.5vw, 28px);
}

.page-faq .fq-section__head .display--sm {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--chalk);
}

.page-faq .fq-section__head p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--chalk);
  opacity: 0.76;
}

@media (min-width: 1024px) {
  .page-faq .fq-section__grid {
    grid-template-columns: minmax(0, 1fr) var(--note-w);
    column-gap: clamp(32px, 4vw, 72px);
  }
}

/* ---------- 问答折叠 ---------- */
.page-faq .fq-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.page-faq .fq-item:first-child {
  border-top: 1px solid var(--turf-line);
}

.page-faq .fq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--chalk);
  transition: color var(--t-fast) var(--ease);
}

.page-faq .fq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .fq-item > summary::marker {
  content: "";
}

.page-faq .fq-item > summary:hover {
  color: var(--neon-cyan);
}

.page-faq .fq-item > summary:focus-visible {
  outline: 1px solid var(--neon-cyan);
  outline-offset: 4px;
}

.page-faq .fq-item__no {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan-muted);
  transition: color var(--t-fast) var(--ease);
}

.page-faq .fq-item[open] .fq-item__no {
  color: var(--flare-orange);
}

.page-faq .fq-item__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .fq-item > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan-muted);
  transition: color var(--t-fast) var(--ease);
}

.page-faq .fq-item[open] > summary::after {
  content: "−";
  color: var(--neon-cyan);
}

.page-faq .fq-answer {
  max-width: 62ch;
  padding: 0 0 22px;
}

.page-faq .fq-answer p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--chalk);
  opacity: 0.8;
}

.page-faq .fq-num {
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--flare-soft);
}

/* ---------- 指标对照 ---------- */
.page-faq .fq-defs {
  margin: 0 0 clamp(20px, 3vw, 32px);
  border-top: 1px solid var(--turf-line);
}

.page-faq .fq-defs__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--turf-line);
}

.page-faq .fq-defs dt {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--neon-cyan);
}

.page-faq .fq-defs dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--chalk);
  opacity: 0.82;
}

@media (min-width: 640px) {
  .page-faq .fq-defs__row {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

/* ---------- 配图 ---------- */
.page-faq .fq-figure {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

/* ---------- 旁注栏 ---------- */
.page-faq .fq-aside {
  padding-left: 14px;
  border-left: 2px solid var(--neon-cyan);
  font-family: var(--font-mono);
}

.page-faq .fq-aside__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--smoke);
}

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

.page-faq .fq-aside__link {
  display: block;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--cyan-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

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

@media (max-width: 1023px) {
  .page-faq .fq-aside {
    padding-left: 0;
    padding-top: 14px;
    border-left: none;
    border-top: 1px solid var(--turf-line);
  }
}

/* ---------- 联系块 ---------- */
.page-faq .fq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-bottom: 18px;
  background: var(--turf-line);
  border: 1px solid var(--turf-line);
}

.page-faq .fq-contact__cell {
  background: var(--card-slate);
  padding: 16px 18px;
}

.page-faq .fq-contact__k {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--smoke);
}

.page-faq .fq-contact__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--chalk);
  word-break: break-word;
}

@media (min-width: 720px) {
  .page-faq .fq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .fq-note {
  margin: 0 0 22px;
  padding: 12px 14px 12px 16px;
  border-left: 2px solid var(--flare-orange);
  background: var(--turf-deep);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--chalk);
  opacity: 0.86;
}

.page-faq .fq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .fq-item > summary,
  .page-faq .fq-item > summary::after,
  .page-faq .fq-aside__link {
    transition: none;
  }
}