.page-faq {
  --faq-line: rgba(243, 239, 228, 0.12);
  --faq-line-soft: rgba(243, 239, 228, 0.06);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(40px, 6vw, 78px);
  background:
    radial-gradient(92% 72% at 88% -12%, rgba(53, 242, 208, 0.17), transparent 62%),
    radial-gradient(72% 62% at -6% 34%, rgba(255, 106, 42, 0.13), transparent 66%),
    linear-gradient(180deg, #0d2a23 0%, var(--ink) 58%, var(--deep) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(53, 242, 208, 0.55), transparent);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__intro h1 {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(30px, 5.6vw, 56px);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__intro .ob-lede {
  margin-top: 20px;
  max-width: 56ch;
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.85;
  color: var(--paper-70);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__chips li {
  padding: 5px 11px;
  border: 1px solid var(--paper-12);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.07em;
  color: var(--mist);
  background: rgba(243, 239, 228, 0.03);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--paper-12);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(53, 242, 208, 0.18), rgba(7, 16, 13, 0.92) 64%);
  box-shadow: 10px 10px 0 -1px rgba(53, 242, 208, 0.12);
  aspect-ratio: 4 / 3;
}

.page-faq .faq-hero__figure .ob-media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: clamp(36px, 6vw, 78px) 0 clamp(30px, 5vw, 56px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.page-faq .faq-toc {
  padding: 18px 18px 20px;
  border-left: 2px solid var(--orange);
  background: linear-gradient(180deg, rgba(243, 239, 228, 0.035), transparent);
}

.page-faq .faq-toc .ob-eyebrow {
  color: var(--mist);
  letter-spacing: 0.14em;
}

.page-faq .faq-toc__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--faq-line-soft);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--paper-70);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.page-faq .faq-toc__list a:hover {
  color: var(--paper);
  padding-left: 4px;
}

.page-faq .faq-toc__list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-faq .faq-toc__hint {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-toc__hint a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 208, 0.4);
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  --group-accent: var(--orange);
  margin-bottom: clamp(40px, 6vw, 74px);
  scroll-margin-top: 88px;
}

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

.page-faq .faq-group--cyan {
  --group-accent: var(--cyan);
}

.page-faq .faq-group--gold {
  --group-accent: var(--gold);
}

.page-faq .faq-group--mist {
  --group-accent: var(--mist);
}

.page-faq .faq-group__head {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 58px;
  height: 2px;
  background: var(--group-accent);
}

.page-faq .faq-group__head .ob-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(19px, 2.5vw, 27px);
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--group-accent);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-line-soft);
  transition: background-color 0.25s ease;
}

.page-faq .qa[open] {
  background: linear-gradient(90deg, rgba(243, 239, 228, 0.035), transparent 72%);
}

.page-faq .qa__sum {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 14px;
  align-items: start;
  gap: 10px;
  padding: 18px 4px 18px 0;
  cursor: pointer;
  list-style: none;
  -webkit-tap-highlight-color: transparent;
}

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

.page-faq .qa__sum::marker {
  content: "";
}

.page-faq .qa__sum:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--group-accent);
  padding-top: 5px;
}

.page-faq .qa__q {
  font-family: var(--font-serif);
  font-size: clamp(16.5px, 2vw, 20px);
  line-height: 1.55;
  color: var(--paper-86);
  transition: color 0.2s ease;
}

.page-faq .qa__sum:hover .qa__q {
  color: var(--paper);
}

.page-faq .qa__mark {
  position: relative;
  width: 12px;
  height: 12px;
  margin-top: 8px;
  justify-self: end;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--mist);
  transition: transform 0.22s ease, background-color 0.22s ease;
}

.page-faq .qa__mark::before {
  left: 0;
  top: 5px;
  width: 12px;
  height: 1.5px;
}

.page-faq .qa__mark::after {
  left: 5px;
  top: 0;
  width: 1.5px;
  height: 12px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
}

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

.page-faq .qa__a {
  padding: 0 6px 24px 44px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-70);
}

.page-faq .qa__a p {
  margin: 0 0 12px;
}

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

.page-faq .qa__a ul {
  margin: 0 0 12px;
  padding-left: 1.1em;
}

.page-faq .qa__a li {
  margin-bottom: 7px;
}

.page-faq .qa__a li::marker {
  color: var(--group-accent);
}

.page-faq .qa__a strong {
  color: var(--paper);
  font-weight: 600;
}

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 208, 0.42);
}

.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;
}

/* ---------- 规则区图注块 ---------- */
.page-faq .faq-note {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 22px;
  padding: 18px;
  border: 1px solid var(--gold-50);
  border-radius: var(--radius);
  background:
    linear-gradient(158deg, rgba(217, 164, 65, 0.1), rgba(16, 18, 20, 0.72) 62%),
    var(--panel);
}

.page-faq .faq-note__figure {
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid rgba(217, 164, 65, 0.32);
  aspect-ratio: 4 / 3;
}

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

.page-faq .faq-note__text .ob-eyebrow {
  color: var(--gold);
  letter-spacing: 0.14em;
}

.page-faq .faq-note__text p:last-child {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--paper-70);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-end {
  padding: clamp(42px, 6vw, 80px) 0 clamp(46px, 7vw, 88px);
  border-top: 1px solid var(--faq-line);
  background:
    radial-gradient(70% 90% at 10% 0%, rgba(53, 242, 208, 0.1), transparent 68%),
    linear-gradient(180deg, var(--deep), #050d0a);
}

.page-faq .faq-end__inner {
  max-width: 720px;
}

.page-faq .faq-end__inner .ob-eyebrow {
  color: var(--orange);
  letter-spacing: 0.16em;
}

.page-faq .faq-end__inner .ob-title {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-end__text {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--paper-70);
}

.page-faq .faq-end__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-note {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    align-items: center;
    padding: 20px;
  }

  .page-faq .qa__a {
    padding-left: 58px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .faq-hero__figure {
    aspect-ratio: 5 / 4;
  }

  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: clamp(20px, 3vw, 40px);
  }

  .page-faq .qa__sum {
    grid-template-columns: 44px minmax(0, 1fr) 16px;
    gap: 14px;
    padding: 20px 8px 20px 0;
  }

  .page-faq .qa__a {
    padding-left: 58px;
    font-size: 15.5px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__figure {
    aspect-ratio: 4 / 3;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q,
  .page-faq .qa,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .faq-toc__list a {
    transition: none;
  }
}
<<<END>>>