.page-faq {
  --faq-line: rgba(232, 237, 242, 0.09);
  display: block;
  background:
    radial-gradient(110% 70% at 82% -12%, rgba(139, 92, 246, 0.12), transparent 62%),
    radial-gradient(90% 60% at 10% 0%, rgba(90, 224, 232, 0.09), transparent 58%),
    var(--ink-0);
  color: var(--text);
  padding-bottom: clamp(40px, 6vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(18px, 3.6vw, 40px);
}

.page-faq .faq-hero .breadcrumb {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .faq-hero .eyebrow {
  margin: clamp(20px, 3vw, 32px) 0 12px;
  letter-spacing: 0.18em;
}

.page-faq .faq-hero .page-title {
  margin: 0;
  max-width: 21ch;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 66px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 700;
}

.page-faq .faq-hero .lede {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 58ch;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-hero-media {
  margin: clamp(22px, 3.6vw, 42px) 0 0;
  padding: 0;
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 48px);
  padding-top: clamp(30px, 4.6vw, 60px);
}

/* ---------- 目录 ---------- */
.page-faq .faq-toc {
  min-width: 0;
}

.page-faq .faq-toc-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc-list li {
  flex: 0 0 auto;
}

.page-faq .faq-toc-list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-pill);
  color: var(--muted);
  font-size: var(--fs-13);
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-toc-list a:hover,
.page-faq .faq-toc-list a:focus-visible {
  color: var(--cyan);
  border-color: var(--line-strong);
  background: rgba(90, 224, 232, 0.07);
}

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

.page-faq .faq-toc-no {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--cyan);
  opacity: 0.75;
}

.page-faq .faq-toc-cta {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-toc-note {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--muted);
}

/* ---------- 内容区 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-section {
  padding-block: clamp(24px, 3.6vw, 40px);
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-main > .faq-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-section-index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-section-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: -0.005em;
}

.page-faq .faq-section-lede {
  margin: 10px 0 0;
  max-width: 54ch;
  font-size: var(--fs-15);
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa-list {
  margin-top: clamp(14px, 2vw, 22px);
}

.page-faq .qa {
  border-top: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease;
}

.page-faq .qa:first-child {
  border-top: 0;
}

.page-faq .qa[open] {
  background: linear-gradient(90deg, rgba(90, 224, 232, 0.07), rgba(90, 224, 232, 0) 64%);
}

.page-faq .qa summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 8px 15px 10px;
  font-size: var(--fs-17);
  line-height: 1.6;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  padding-left: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-17);
  line-height: 1;
  color: var(--muted);
  transition: color 0.18s ease, transform 0.18s ease;
}

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

.page-faq .qa summary:hover {
  color: var(--cyan);
}

.page-faq .qa summary:hover::after {
  color: var(--cyan);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

.page-faq .qa-mark {
  flex: none;
  align-self: center;
  padding: 1px 7px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.5;
  color: var(--cyan);
}

.page-faq .qa-a {
  padding: 0 10px 18px 10px;
  max-width: 64ch;
  font-size: var(--fs-15);
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .qa-a p {
  margin: 0 0 9px;
}

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

.page-faq .qa-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(90, 224, 232, 0.4);
}

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

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

/* ---------- 图的处理 ---------- */
.page-faq .faq-figure {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(196px, 236px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    padding-left: 16px;
    border-left: 1px solid var(--line-strong);
  }

  .page-faq .faq-toc-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-faq .faq-toc-list a {
    padding: 8px 6px 8px 0;
    border: 0;
    border-radius: 0;
    font-size: var(--fs-15);
    white-space: normal;
  }

  .page-faq .faq-toc-list a:hover,
  .page-faq .faq-toc-list a:focus-visible {
    background: transparent;
  }

  .page-faq .faq-section {
    margin-inline: calc(-1 * clamp(12px, 1.8vw, 30px));
    padding-inline: clamp(12px, 1.8vw, 30px);
    border-top: 0;
    border-radius: var(--radius-lg);
    margin-bottom: 10px;
  }

  .page-faq .faq-main > .faq-section:first-child {
    padding-top: clamp(24px, 3.6vw, 40px);
  }

  .page-faq .faq-section:nth-child(odd) {
    background: var(--ink-1);
  }

  .page-faq .qa-a {
    padding-left: 44px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-hero .page-title {
    max-width: 19ch;
  }

  .page-faq .faq-hero-media img {
    aspect-ratio: 16 / 4.6;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>