.page-faq {
  --faq-rail-w: 264px;
  --faq-shadow: 0 18px 42px rgba(2, 8, 20, 0.5);
  padding-block: clamp(24px, 4vw, 52px) clamp(48px, 8vw, 96px);
  background:
    radial-gradient(1100px 600px at 10% -8%, rgba(53, 227, 224, 0.10), transparent 62%),
    radial-gradient(880px 520px at 98% 4%, rgba(242, 180, 65, 0.08), transparent 64%);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(8px, 2vw, 20px) 0 clamp(24px, 3.5vw, 40px);
  border-bottom: 1px solid var(--ink-600);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -6px;
  right: 0;
  width: clamp(110px, 18vw, 210px);
  aspect-ratio: 1;
  border: 1px solid var(--neon-16);
  border-radius: 20px;
  transform: rotate(9deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 18px;
  right: 26px;
  width: clamp(70px, 12vw, 140px);
  aspect-ratio: 1;
  border: 1px solid var(--amber-38);
  border-radius: 14px;
  transform: rotate(-4deg);
  pointer-events: none;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(3rem, 11vw, 7.25rem);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.035em;
  background: linear-gradient(102deg, var(--text) 8%, var(--neon) 62%, var(--amber) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-faq .faq-hero__lead {
  max-width: 60ch;
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 40px);
  margin-top: clamp(28px, 4vw, 52px);
}

.page-faq .faq-rail {
  display: grid;
  gap: 22px;
  min-width: 0;
}

.page-faq .faq-rail__media {
  max-inline-size: 100%;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius);
  border: 1px solid var(--ink-600);
}

.page-faq .faq-rail__media img,
.page-faq .faq-index__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-topics {
  min-width: 0;
}

.page-faq .faq-topics__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-topic-list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

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

.page-faq .faq-topic-link {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 15px;
  border: 1px solid var(--ink-600);
  border-radius: 999px;
  background: rgba(18, 34, 56, 0.62);
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-topic-link:hover,
.page-faq .faq-topic-link:focus-visible {
  color: var(--text);
  border-color: var(--neon-28);
  background: var(--neon-08);
}

.page-faq .faq-topic-link:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-faq .faq-topic-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--amber);
}

.page-faq .faq-body {
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  margin-bottom: clamp(34px, 5vw, 64px);
  scroll-margin-top: 96px;
}

.page-faq .faq-section__head {
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-section__head h2 {
  margin: 8px 0 0;
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  letter-spacing: -0.015em;
  line-height: 1.2;
}

.page-faq .faq-section__note {
  max-width: 58ch;
  margin: 10px 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 八条目录 ---------- */
.page-faq .faq-index-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-faq .faq-index__media {
  width: 100%;
  max-inline-size: 240px;
  border-radius: var(--radius);
  border: 1px solid var(--ink-600);
}

.page-faq .faq-index {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}

.page-faq .faq-index__row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 15px;
  border: 1px solid var(--ink-600);
  border-radius: var(--radius-sm);
  background: rgba(11, 22, 40, 0.62);
  color: var(--text);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-index__row:hover,
.page-faq .faq-index__row:focus-visible {
  border-color: var(--amber-38);
  background: var(--amber-12);
  transform: translateX(3px);
}

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

.page-faq .faq-index__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--amber);
}

.page-faq .faq-index__label {
  min-width: 0;
  color: var(--mist);
  line-height: 1.5;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: block;
}

.page-faq .faq-list > .faq-item + .faq-item {
  margin-top: 12px;
}

.page-faq .faq-item {
  border: 1px solid var(--ink-600);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, background 0.22s ease, transform 0.22s ease;
}

.page-faq .faq-item:hover {
  border-color: var(--neon-28);
}

.page-faq .faq-item[open] {
  border-color: var(--neon-28);
  box-shadow: var(--faq-shadow), 0 0 0 1px var(--neon-08);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 17px 18px;
  list-style: none;
  cursor: pointer;
  color: var(--text);
  font-size: clamp(1rem, 1.6vw, 1.0625rem);
  font-weight: 700;
  line-height: 1.55;
}

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

.page-faq .faq-item > summary::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin: 10px 0 0 auto;
  border-right: 2px solid var(--neon);
  border-bottom: 2px solid var(--neon);
  transform: rotate(45deg);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-faq .faq-item[open] > summary::after {
  transform: rotate(-135deg);
  margin-top: 14px;
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  margin-top: 2px;
  padding: 2px 8px;
  border: 1px solid var(--amber-38);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--amber);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-answer {
  padding: 0 18px 18px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-answer p {
  margin: 0;
}

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

/* 纸色层 / 玻璃层交替，形成明暗呼吸 */
.page-faq .faq-list > .faq-item:nth-of-type(even) {
  background: var(--paper);
  border-color: rgba(22, 32, 46, 0.16);
}

.page-faq .faq-list > .faq-item:nth-of-type(even):hover,
.page-faq .faq-list > .faq-item:nth-of-type(even)[open] {
  border-color: rgba(12, 107, 119, 0.5);
}

.page-faq .faq-list > .faq-item:nth-of-type(even) > summary {
  color: var(--paper-ink);
}

.page-faq .faq-list > .faq-item:nth-of-type(even) > summary::after {
  border-color: var(--paper-link);
}

.page-faq .faq-list > .faq-item:nth-of-type(even) .faq-item__num {
  color: var(--paper-link);
  border-color: rgba(12, 107, 119, 0.4);
}

.page-faq .faq-list > .faq-item:nth-of-type(even) .faq-answer {
  color: rgba(22, 32, 46, 0.86);
}

.page-faq .faq-list > .faq-item:nth-of-type(even) .faq-answer a {
  color: var(--paper-link);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-outro__panel {
  padding: clamp(22px, 3.4vw, 34px);
}

.page-faq .faq-outro__panel h2 {
  margin: 0;
  font-size: clamp(1.3rem, 2.8vw, 1.75rem);
  letter-spacing: -0.01em;
}

.page-faq .faq-outro__panel p {
  max-width: 56ch;
  margin: 12px 0 0;
  font-size: 1rem;
  line-height: 1.8;
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-outro__panel .btn--ghost {
  color: var(--paper-link);
  border-color: rgba(12, 107, 119, 0.45);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-index-wrap {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: start;
    gap: 28px;
  }

  .page-faq .faq-index__media {
    max-inline-size: 240px;
  }

  .page-faq .faq-answer {
    padding-left: 66px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
    gap: clamp(30px, 4vw, 60px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 88px;
  }

  .page-faq .faq-topic-list {
    flex-direction: column;
    gap: 8px;
    overflow-x: visible;
    padding-bottom: 0;
  }

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

  .page-faq .faq-topic-link {
    width: 100%;
    border-radius: var(--radius-sm);
    border-left: 2px solid var(--ink-600);
    white-space: normal;
  }

  .page-faq .faq-topic-link:hover,
  .page-faq .faq-topic-link:focus-visible {
    border-left-color: var(--amber);
  }
}

@media (max-width: 640px) {
  .page-faq .faq-hero::before,
  .page-faq .faq-hero::after {
    display: none;
  }

  .page-faq .faq-hero__title {
    background: none;
    -webkit-background-clip: initial;
    background-clip: initial;
    color: var(--text);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-index__row,
  .page-faq .faq-topic-link,
  .page-faq .faq-item > summary::after {
    transition: opacity 0.2s ease;
  }

  .page-faq .faq-item:hover,
  .page-faq .faq-index__row:hover,
  .page-faq .faq-index__row:focus-visible {
    transform: none;
  }
}
<<<END>>>