.page-faq {
  --faq-gap: clamp(20px, 3vw, 36px);
  --faq-radius: 10px;
  --faq-panel: linear-gradient(180deg, rgba(15, 31, 61, 0.9) 0%, rgba(8, 18, 38, 0.94) 100%);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding-top: 20px;
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 48px) 0 clamp(30px, 5vw, 58px);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-hero__intro .eyebrow {
  color: var(--sun);
}

.page-faq .faq-hero__title {
  margin: 10px 0 14px;
  font-size: clamp(30px, 5.4vw, 54px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  max-width: 46ch;
  margin: 0;
  color: var(--mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(15, 31, 61, 0.6);
  color: var(--paper);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--sun);
  color: var(--gold);
  transform: translateY(-2px);
}

.page-faq .faq-hero__visual {
  display: grid;
  gap: 14px;
}

.page-faq .faq-hero__shot {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--ink);
}

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

.page-faq .faq-hero__badge {
  position: absolute;
  left: 12px;
  bottom: 12px;
}

.page-faq .faq-route-box {
  padding: 14px 16px 8px;
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius);
  background: rgba(15, 31, 61, 0.45);
}

.page-faq .faq-route-box__title {
  margin: 0 0 4px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

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

/* ---------- 主体：目录 + 手风琴 ---------- */
.page-faq .faq-body {
  padding: clamp(34px, 6vw, 72px) 0;
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-toc {
  border-top: 2px solid var(--sun);
  padding-top: 14px;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-toc__list {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: max-content;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  overflow-x: auto;
  list-style: none;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--paper);
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-color: var(--sun);
  color: var(--gold);
}

.page-faq .faq-toc__num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--sun);
}

.page-faq .faq-toc__meta {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-toc__meta a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(30px, 5vw, 54px);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 10px;
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
  scroll-margin-top: 96px;
}

.page-faq .faq-group__title::before {
  content: "";
  flex: none;
  width: 10px;
  height: 10px;
  background: var(--sun);
  transform: translateY(-2px);
}

.page-faq .faq-group__lede {
  max-width: 62ch;
  margin: 0 0 18px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-group__lede a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-left: 3px solid rgba(255, 138, 42, 0.45);
  border-radius: 4px;
  background: var(--faq-panel);
  transition: border-color 0.2s ease;
}

.page-faq .qa[open] {
  border-color: rgba(255, 138, 42, 0.42);
  border-left-color: var(--sun);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: 2.2em minmax(0, 1fr) 1.2em;
  gap: 10px;
  align-items: start;
  padding: 15px 16px;
  color: var(--paper);
  font-size: clamp(15px, 1.7vw, 16.5px);
  font-weight: 700;
  line-height: 1.5;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__num {
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 400;
  color: var(--sun);
}

.page-faq .qa__mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--mist);
  transition: transform 0.2s ease, background 0.2s ease;
}

.page-faq .qa__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::before {
  background: var(--sun);
}

.page-faq .qa[open] .qa__mark::after {
  transform: rotate(90deg);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 18px 18px 18px;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.78;
}

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

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 配图 ---------- */
.page-faq .faq-shot {
  margin: 22px 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--ink);
}

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

.page-faq .faq-shot figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  background: rgba(8, 18, 38, 0.72);
  color: var(--mist);
  font-size: 12.5px;
  line-height: 1.6;
}

/* ---------- 术语卡 ---------- */
.page-faq .term-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .term-grid .note-card {
  height: 100%;
}

/* ---------- 结尾引导 ---------- */
.page-faq .faq-cta {
  padding: clamp(24px, 3vw, 40px) 0 clamp(48px, 7vw, 88px);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 18px;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(120deg, rgba(122, 62, 18, 0.5) 0%, rgba(15, 31, 61, 0.86) 55%, rgba(8, 18, 38, 0.96) 100%);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 58ch;
  color: var(--paper);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.7;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .qa__a {
    padding-left: calc(2.2em + 26px);
  }

  .page-faq .term-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 64px);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 32px;
  }

  .page-faq .faq-toc__list {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    gap: 2px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-toc__link {
    display: flex;
    padding: 9px 0;
    border: 0;
    border-bottom: 1px solid var(--line-soft);
    border-radius: 0;
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-toc__num {
    flex: none;
    width: 20px;
    padding-top: 2px;
  }
}

@media (min-width: 1100px) {
  .page-faq .term-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after {
    transition: none;
  }

  .page-faq .faq-chip:hover,
  .page-faq .faq-chip:focus-visible {
    transform: none;
  }
}