.page-faq {
  --faq-hair: rgba(140, 147, 174, .24);
  --faq-q: var(--paper);
  --faq-a: var(--rock);
  --faq-accent: var(--cyan);
  display: block;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 4.6vw, 52px) 0 clamp(40px, 6vw, 76px);
  background:
    radial-gradient(112% 82% at 88% 4%, rgba(123, 92, 255, .16), transparent 62%),
    radial-gradient(88% 70% at 4% 92%, rgba(53, 240, 208, .10), transparent 62%),
    var(--deep);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__copy .display {
  margin: 12px 0 0;
  font-size: clamp(34px, 7.4vw, 62px);
  line-height: 1.08;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__copy .lede {
  margin-top: clamp(14px, 2vw, 20px);
  max-width: 46ch;
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.85;
  color: var(--rock);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--edge);
  border-radius: 3px;
  overflow: hidden;
  background: var(--tunnel);
}

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

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .68fr);
    align-items: end;
    gap: clamp(32px, 5vw, 72px);
  }
}

/* 路径条 */
.page-faq .faq-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: clamp(28px, 4vw, 48px);
}

.page-faq .faq-strip .path-strip__item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--edge);
  border-radius: 2px;
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-strip .path-strip__item:hover,
.page-faq .faq-strip .path-strip__item:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
}

.page-faq .faq-strip .path-strip__meta {
  font-size: 12px;
  color: var(--clay);
}

/* 左侧留白小注释 */
.page-faq .rail-note {
  position: absolute;
  left: clamp(10px, 2vw, 24px);
  bottom: clamp(28px, 4vw, 64px);
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: .34em;
  color: rgba(140, 147, 174, .5);
}

@media (max-width: 1199px) {
  .page-faq .rail-note {
    display: none;
  }
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: clamp(30px, 4.6vw, 68px) 0 clamp(48px, 7vw, 96px);
  background: linear-gradient(180deg, var(--deep) 0, var(--ink) 240px);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

.page-faq .faq-body__main {
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 2.4vw, 30px);
  min-width: 0;
}

@media (min-width: 1040px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(0, 1fr) 212px;
    align-items: start;
  }
}

/* 分组 */
.page-faq .faq-group {
  --faq-hair: rgba(140, 147, 174, .24);
  --faq-q: var(--paper);
  --faq-a: var(--rock);
  --faq-accent: var(--cyan);
  padding: clamp(24px, 3.4vw, 42px) clamp(20px, 3.2vw, 44px);
  border-left: 2px solid var(--faq-accent);
  border-radius: 3px;
  background: var(--tunnel);
  color: var(--paper);
  scroll-margin-top: 96px;
}

.page-faq .faq-group--paper {
  --faq-hair: rgba(14, 17, 48, .14);
  --faq-q: var(--ink);
  --faq-a: #4C5168;
  --faq-accent: var(--teal-ink);
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-group--signal {
  --faq-hair: rgba(255, 138, 61, .3);
  --faq-accent: var(--orange);
  background: linear-gradient(155deg, #1D1636 0%, var(--tunnel) 64%);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 2vw, 22px);
  padding-bottom: 14px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-group__no {
  font-family: var(--mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--clay);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--faq-q);
}

.page-faq .faq-group__meta {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--rock);
}

.page-faq .faq-group--paper .faq-group__meta {
  color: #8A8F9E;
}

@media (max-width: 640px) {
  .page-faq .faq-group__meta {
    display: none;
  }
  .page-faq .faq-group__head {
    grid-template-columns: auto minmax(0, 1fr);
  }
}

/* 问答条目 */
.page-faq .qa {
  margin: 0;
}

.page-faq .qa__row {
  padding: clamp(16px, 2.2vw, 24px) 0;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .qa__row:last-child {
  border-bottom: 0;
  padding-bottom: 2px;
}

.page-faq .qa__q {
  font-size: clamp(16px, 1.7vw, 18px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -.005em;
  color: var(--faq-q);
}

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

.page-faq .qa__a p {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--faq-a);
}

.page-faq .qa__go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--faq-accent);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.page-faq .qa__go::before {
  content: "→";
  font-family: var(--mono);
  transition: transform .18s var(--ease);
}

.page-faq .qa__go:hover,
.page-faq .qa__go:focus-visible {
  color: var(--orange);
}

.page-faq .qa__go:hover::before,
.page-faq .qa__go:focus-visible::before {
  transform: translateX(4px);
}

/* 横竖屏对照 */
.page-faq .faq-orient {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: clamp(14px, 2vw, 22px);
  border: 1px dashed var(--faq-hair);
  border-radius: 3px;
  background: rgba(14, 17, 48, .38);
}

.page-faq .faq-orient svg {
  display: block;
  width: 100%;
  max-width: 340px;
  height: auto;
}

.page-faq .faq-orient figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

/* 联系分组 */
.page-faq .faq-contact__grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-faq .faq-contact__figure {
  margin: 0;
  border: 1px solid rgba(255, 138, 61, .34);
  border-radius: 3px;
  overflow: hidden;
  background: var(--ink);
}

.page-faq .faq-contact__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

@media (min-width: 760px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    align-items: start;
  }
}

/* 底部复制 */
.page-faq .faq-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: clamp(20px, 2.8vw, 28px);
  padding-top: clamp(16px, 2.2vw, 22px);
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-copy__text {
  margin: 0;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-a);
}

.page-faq .faq-group--paper .copy-btn {
  border-color: rgba(14, 17, 48, .3);
  color: var(--ink);
}

.page-faq .faq-group--paper .copy-btn:hover,
.page-faq .faq-group--paper .copy-btn:focus-visible {
  border-color: var(--orange);
  color: #B4541F;
}

/* 右侧分组索引 */
.page-faq .faq-index {
  display: none;
}

@media (min-width: 1040px) {
  .page-faq .faq-index {
    display: block;
    position: sticky;
    top: 96px;
    padding-left: 22px;
    border-left: 1px solid var(--edge);
  }
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--rock);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-index__list a {
  display: block;
  font-size: 14px;
  line-height: 1.45;
  color: var(--rock);
  text-decoration: none;
  transition: color .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--cyan);
  transform: translateX(3px);
}

.page-faq .faq-index__no {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--clay);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__go,
  .page-faq .qa__go::before,
  .page-faq .faq-index__list a,
  .page-faq .faq-strip .path-strip__item {
    transition: none;
  }
  .page-faq .qa__go:hover::before,
  .page-faq .qa__go:focus-visible::before,
  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    transform: none;
  }
}