.page-faq {
  --faq-line: rgba(216, 169, 79, 0.26);
  --faq-soft: rgba(35, 38, 45, 0.72);
  --faq-gap: clamp(18px, 2.4vw, 30px);
  padding: clamp(26px, 4.6vw, 56px) 0 clamp(56px, 8vw, 96px);
  background-image:
    radial-gradient(120% 58% at 6% 0%, rgba(216, 169, 79, 0.11), transparent 62%),
    radial-gradient(90% 48% at 100% 10%, rgba(47, 169, 140, 0.07), transparent 60%);
  background-repeat: no-repeat;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--text-400);
}

.page-faq .crumbs ol li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-600);
}

.page-faq .crumbs__item a {
  color: var(--text-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .crumbs__item a:hover {
  color: var(--gold-300);
  border-color: var(--gold-500);
}

.page-faq .crumbs__item[aria-current="page"] {
  color: var(--gold-500);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  border-bottom: 1px solid var(--line-600);
  padding-bottom: clamp(22px, 3.4vw, 38px);
  margin: clamp(18px, 3vw, 30px) 0 clamp(28px, 4.4vw, 48px);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 6vw, 60px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  max-width: 15em;
  color: var(--text-100);
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .page-faq .faq-hero h1 {
    background-image: linear-gradient(96deg, var(--text-100) 16%, var(--gold-300) 92%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  align-self: end;
  padding-bottom: 6px;
}

.page-faq .faq-hero__metaline {
  margin: 0;
  font-size: 13px;
  color: var(--text-400);
  letter-spacing: 0.04em;
}

.page-faq .faq-hero__metaline .num {
  color: var(--gold-500);
  font-size: 15px;
  margin-right: 4px;
}

.page-faq .faq-hero .lede {
  margin: 20px 0 0;
  max-width: 38em;
  color: var(--text-400);
  font-size: 16px;
  line-height: 1.78;
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
  }
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 44px);
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-toc {
  border-top: 1px solid var(--faq-line);
  padding-top: 14px;
}

.page-faq .faq-toc__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--text-400);
  margin-bottom: 10px;
}

.page-faq .faq-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
  font-size: 14px;
  color: var(--text-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--gold-300);
  border-color: var(--gold-500);
}

.page-faq .faq-toc__index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold-500);
}

@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: 186px minmax(0, 1fr);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 84px;
    align-self: start;
    border-top: 0;
    border-left: 1px solid var(--faq-line);
    padding: 4px 0 4px 16px;
  }

  .page-faq .faq-toc__label {
    writing-mode: vertical-rl;
    letter-spacing: 0.4em;
    margin: 0 0 16px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 2px;
  }

  .page-faq .faq-toc__link {
    display: flex;
  }
}

/* ---------- 折叠分组 ---------- */
.page-faq .faq-block {
  border-top: 1px solid var(--line-600);
  scroll-margin-top: 88px;
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 2px 18px;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--dur) var(--ease);
}

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

.page-faq .faq-block__head:hover {
  background-color: rgba(216, 169, 79, 0.05);
}

.page-faq .faq-block__head:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

.page-faq .faq-block__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.8vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold-500);
  letter-spacing: -0.02em;
  flex: none;
}

.page-faq .faq-block__title {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.3vw, 25px);
  font-weight: 700;
  color: var(--text-100);
  line-height: 1.3;
}

.page-faq .faq-block__toggle {
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-400);
  border: 1px solid var(--line-600);
  border-radius: 999px;
  padding: 3px 12px;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-block__toggle::after {
  content: "展开";
}

.page-faq .faq-block[open] .faq-block__toggle::after {
  content: "收起";
}

.page-faq .faq-block[open] .faq-block__toggle {
  color: var(--gold-300);
  border-color: var(--faq-line);
}

.page-faq .faq-block__body {
  display: grid;
  gap: 22px;
  padding: 2px 2px 34px;
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  max-width: 42em;
  border-left: 1px solid var(--faq-line);
  padding-left: 16px;
}

.page-faq .qa__q {
  display: flex;
  gap: 10px;
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-100);
}

.page-faq .qa__q::before {
  content: "Q";
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 2.1;
  color: var(--gold-500);
}

.page-faq .qa__a {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-400);
}

.page-faq .qa__a a {
  color: var(--jade-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 169, 140, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--gold-300);
  border-color: var(--gold-500);
}

/* ---------- 编号结构块 ---------- */
.page-faq .code-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  max-width: 42em;
  padding: 14px 16px;
  background-color: var(--faq-soft);
  border: 1px solid var(--line-600);
  border-radius: 8px;
}

.page-faq .code-block__cell {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 64px;
}

.page-faq .code-block__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--gold-300);
  letter-spacing: 0.02em;
}

.page-faq .code-block__label {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-400);
}

.page-faq .code-block__sep {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--line-600);
}

/* ---------- 下钻路径条 ---------- */
.page-faq .path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .path__step {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gold-300);
  background-color: rgba(216, 169, 79, 0.07);
  border: 1px solid var(--faq-line);
  border-radius: 6px;
  padding: 7px 12px;
}

.page-faq .path__arrow {
  font-family: var(--font-mono);
  color: var(--gold-500);
  font-size: 14px;
}

/* ---------- 图 ---------- */
.page-faq .media-frame {
  margin: 0;
  border: 1px solid var(--line-600);
  border-radius: 10px;
  overflow: hidden;
  background-color: var(--ink-900);
  max-width: 100%;
}

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

.page-faq .media-frame__caption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-400);
  border-top: 1px solid var(--line-600);
}

/* ---------- 尾部 ---------- */
.page-faq .faq-tail {
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line-600);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-400);
  max-width: 38em;
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 520px) {
  .page-faq .faq-block__head {
    flex-wrap: wrap;
    gap: 8px 12px;
    padding: 18px 2px 16px;
  }

  .page-faq .faq-block__toggle {
    margin-left: 0;
    order: 3;
  }

  .page-faq .qa {
    padding-left: 13px;
  }

  .page-faq .code-block__cell {
    min-width: 56px;
  }

  .page-faq .faq-hero__meta {
    gap: 4px 16px;
  }
}
</main>