.page-faq {
  --faq-index-w: 268px;
  --faq-sticky-top: calc(var(--header-h) + 22px);
  color: var(--ink);
  background: var(--void);
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow-x: hidden;
}

/* ---------- 页头 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(26px, 5vw, 54px));
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -46% -12%;
  height: 340px;
  background:
    radial-gradient(58% 100% at 18% 100%, rgba(50, 230, 208, 0.15), transparent 70%),
    radial-gradient(48% 100% at 84% 100%, rgba(255, 90, 60, 0.1), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  padding-bottom: clamp(26px, 4vw, 42px);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 18px;
}

.page-faq .faq-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 4.8vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 22ch;
  overflow-wrap: break-word;
}

.page-faq .faq-lead {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--ink-dim);
}

.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-quick a {
  display: inline-flex;
  align-items: center;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(13, 21, 38, 0.72);
  color: var(--fog);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-quick a:hover,
.page-faq .faq-quick a:focus-visible {
  color: var(--cyan);
  border-color: rgba(50, 230, 208, 0.55);
  background: rgba(50, 230, 208, 0.08);
}

.page-faq .faq-hero-figure {
  position: relative;
  z-index: 1;
  margin: 0;
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: clamp(140px, 22vw, 250px);
  object-fit: cover;
  object-position: center;
  border-top: 1px solid var(--line);
  opacity: 0.82;
}

/* ---------- 主栅格 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 54px);
  padding-top: clamp(30px, 4.5vw, 62px);
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-side-sticky {
  display: grid;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(13, 21, 38, 0.92), rgba(7, 11, 20, 0.62));
  box-shadow: var(--shadow-panel);
}

@media (min-width: 960px) {
  .page-faq .faq-side-sticky {
    position: sticky;
    top: var(--faq-sticky-top);
  }
}

.page-faq .faq-side-sticky .eyebrow {
  margin: 0;
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--ink);
  border-left-color: var(--cyan);
  background: rgba(50, 230, 208, 0.07);
}

.page-faq .faq-index-num {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  opacity: 0.8;
}

.page-faq .faq-side-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}

.page-faq .faq-side-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-side-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--ink-dim);
}

.page-faq .faq-side-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(50, 230, 208, 0.4);
}

.page-faq .faq-side-note a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: clamp(28px, 4vw, 50px);
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group-head {
  display: grid;
  gap: 9px;
  justify-items: start;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group-head .h-section {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 2.5vw, 30px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group-desc {
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-dim);
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  margin-bottom: 10px;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

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

.page-faq .faq-item:hover {
  border-color: rgba(50, 230, 208, 0.28);
}

.page-faq .faq-item[open] {
  border-color: rgba(50, 230, 208, 0.45);
  background: var(--panel-hi);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  margin: 0;
  list-style: none;
  cursor: pointer;
  font-size: clamp(15px, 1.6vw, 16.5px);
  font-weight: 500;
  line-height: 1.55;
  color: var(--ink);
  overflow-wrap: break-word;
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.2;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-q::after {
  content: "−";
  color: var(--flame);
}

.page-faq .faq-q-num {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.12em;
  line-height: 1.9;
  color: var(--ink-dim);
}

.page-faq .faq-a {
  padding: 14px 18px 16px;
  border-top: 1px dashed var(--line-soft);
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--fog);
  overflow-wrap: break-word;
}

.page-faq .faq-more {
  display: inline-flex;
  align-items: center;
  margin-top: 12px;
  padding-bottom: 2px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(50, 230, 208, 0.35);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-more:hover,
.page-faq .faq-more:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--cyan);
}

/* ---------- 结尾 ---------- */
.page-faq .faq-end {
  margin-top: clamp(40px, 6vw, 78px);
  padding-top: clamp(32px, 5vw, 60px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-end-inner {
  display: grid;
  gap: 22px;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(72% 132% at 100% 0%, rgba(76, 141, 255, 0.16), transparent 62%),
    linear-gradient(135deg, rgba(13, 21, 38, 0.96), rgba(7, 11, 20, 0.92));
}

@media (min-width: 800px) {
  .page-faq .faq-end-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 34px;
  }
}

.page-faq .faq-end h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.2;
  color: var(--ink);
}

.page-faq .faq-end p {
  margin: 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--ink-dim);
}

.page-faq .faq-end-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick a,
  .page-faq .faq-index a,
  .page-faq .faq-item,
  .page-faq .faq-more {
    transition: none;
  }
}