.page-faq {
  --faq-hair: rgba(12, 23, 18, .14);
  --faq-soft: rgba(242, 100, 25, .1);
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 20px var(--gutter) 72px;
  font-family: var(--font-body);
  color: var(--ink-900);
}

.page-faq .crumb {
  margin-bottom: 18px;
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: 26px;
  align-items: center;
  padding-block: 6px 12px;
}

.page-faq .faq-hero__text .eyebrow {
  margin: 0 0 14px;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.72;
  color: var(--cement-600);
}

.page-faq .faq-hero__media {
  position: relative;
}

.page-faq .faq-hero__media::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 68px;
  height: 5px;
  background: var(--signal-500);
  z-index: 2;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 26px 100%, 0 calc(100% - 26px));
  box-shadow: var(--shadow-1);
}

/* 主体：索引 + 问题组 */
.page-faq .faq-body {
  display: grid;
  gap: 30px;
  margin-top: 34px;
}

.page-faq .faq-index {
  border-top: 2px solid var(--ink-900);
  padding-top: 14px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cement-600);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.page-faq .faq-index__link {
  display: flex;
  gap: 9px;
  align-items: baseline;
  padding: 9px 10px;
  text-decoration: none;
  color: var(--ink-900);
  font-size: .92rem;
  font-weight: 600;
  border-left: 2px solid var(--cement-200);
  transition: background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--faq-soft);
  border-left-color: var(--signal-500);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--signal-700);
  letter-spacing: .06em;
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  font-size: .82rem;
  line-height: 1.6;
  color: var(--cement-600);
}

.page-faq .faq-index__note a {
  color: var(--signal-700);
  text-underline-offset: 3px;
}

/* 问题组 */
.page-faq .faq-group {
  padding-top: 12px;
  margin-bottom: 40px;
  scroll-margin-top: 90px;
  border-top: 1px solid var(--cement-200);
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--signal-700);
  border: 1px solid var(--cement-200);
  padding: 2px 6px;
  align-self: center;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-item summary {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink-900);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  line-height: 1;
  color: var(--signal-700);
  transition: transform .2s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--signal-500);
}

.page-faq .faq-item summary:hover {
  color: var(--signal-700);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--signal-500);
  outline-offset: 3px;
}

.page-faq .faq-item__body {
  padding: 0 0 18px;
  max-width: 64ch;
  color: var(--cement-600);
}

.page-faq .faq-item__body > p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.75;
}

.page-faq .faq-points {
  margin: 12px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--cement-200);
  display: grid;
  gap: 2px;
}

.page-faq .faq-points dt {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--signal-700);
}

.page-faq .faq-points dd {
  margin: 0 0 8px;
  font-size: .9rem;
  line-height: 1.65;
  color: var(--cement-600);
}

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

.page-faq .faq-group__media {
  margin: 20px 0 10px;
}

.page-faq .faq-group__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  border-top: 4px solid var(--pitch-700);
}

/* 底部入口 */
.page-faq .faq-cta {
  margin-top: 10px;
  padding: 26px 22px 30px;
  background: var(--pitch-900);
  color: var(--cement-050);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-faq .faq-cta__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4vw, 1.8rem);
  font-weight: 800;
  color: var(--paper-000);
}

.page-faq .faq-cta__lede {
  margin: 0;
  max-width: 52ch;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--cement-200);
}

.page-faq .faq-cta__links {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.page-faq .faq-cta__links a {
  display: block;
  padding: 14px 16px;
  text-decoration: none;
  border: 1px solid rgba(216, 255, 74, .35);
  transition: background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-cta__links a:hover,
.page-faq .faq-cta__links a:focus-visible {
  background: rgba(216, 255, 74, .1);
  border-color: var(--score-400);
}

.page-faq .faq-cta__label {
  display: block;
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--score-400);
}

.page-faq .faq-cta__desc {
  display: block;
  margin-top: 6px;
  font-size: .84rem;
  line-height: 1.55;
  color: var(--cement-200);
}

/* 平板及以上 */
@media (min-width: 760px) {
  .page-faq {
    padding-bottom: 88px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 40px;
    padding-block: 16px 20px;
  }

  .page-faq .faq-cta {
    padding: 34px 32px 38px;
  }

  .page-faq .faq-cta__links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 桌面：左侧索引吸顶，问题组占主流 */
@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 56px;
    margin-top: 44px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-group--media {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .55fr);
    column-gap: 32px;
    align-items: start;
  }

  .page-faq .faq-group--media .faq-group__title {
    grid-column: 1 / -1;
  }

  .page-faq .faq-group--media .faq-group__media {
    margin: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item summary::after,
  .page-faq .faq-cta__links a {
    transition: none;
  }
}
<<<END>>>