.page-faq {
  --faq-gap: clamp(20px, 3vw, 32px);
}

.page-faq .breadcrumb {
  margin-top: clamp(16px, 2.5vw, 28px);
}

.page-faq .faq-hero {
  padding-top: clamp(28px, 4vw, 48px);
  padding-bottom: clamp(28px, 4vw, 44px);
}

.page-faq .faq-hero h1 {
  font-size: clamp(1.8rem, 4.4vw, 3.2rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 14px 0 18px;
  max-width: 20ch;
  color: var(--white);
}

.page-faq .faq-hero .lede {
  max-width: 60ch;
  color: var(--mist);
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  line-height: 1.8;
}

.page-faq .faq-figure,
.page-faq .faq-inline-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

.page-faq .faq-figure img,
.page-faq .faq-inline-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .media-caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--steel);
}

/* 目录 + 问答主区 */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding-bottom: clamp(48px, 7vw, 96px);
}

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

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}

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

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

.page-faq .faq-toc__list a {
  display: block;
  white-space: nowrap;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: var(--board);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--white);
  border-color: var(--cyan);
  outline: none;
}

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

/* 问题分组 */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 5vw, 64px);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.page-faq .faq-group__no {
  font-family: var(--font-num);
  font-size: clamp(26px, 4vw, 38px);
  line-height: 0.9;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(1.12rem, 2.4vw, 1.5rem);
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__head .tag {
  margin-left: auto;
}

/* 折叠问答 */
.page-faq .qa {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--grid);
  margin-bottom: 10px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .qa[open] {
  border-left-color: var(--lime);
  background: var(--board);
}

.page-faq .qa > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 16px 52px 16px 18px;
  font-size: 0.99rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
}

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

.page-faq .qa > summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-num);
  font-size: 24px;
  line-height: 1;
  color: var(--lime);
}

.page-faq .qa[open] > summary::after {
  content: "\2013";
  color: var(--orange);
}

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

.page-faq .qa__body {
  padding: 0 18px 18px;
  max-width: 66ch;
  color: var(--mist);
  font-size: 0.95rem;
  line-height: 1.78;
}

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

.page-faq .qa__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .qa__body a:hover {
  color: var(--lime);
}

/* 四步路径 */
.page-faq .step-track {
  list-style: none;
  margin: 0 0 16px;
  padding: 20px 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  background: linear-gradient(180deg, rgba(25, 61, 50, 0.55), rgba(6, 26, 20, 0));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .step-track li {
  position: relative;
  padding-left: 46px;
  min-width: 0;
}

.page-faq .step-track li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 28px;
  height: 2px;
  background: var(--orange);
}

.page-faq .step-no {
  display: block;
  font-family: var(--font-num);
  font-size: 30px;
  line-height: 1;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
  margin-bottom: 6px;
}

.page-faq .step-track h3 {
  margin: 0 0 6px;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .step-track p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--mist);
}

/* 移动端区块 */
.page-faq .faq-mobile-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .faq-mobile-copy {
  min-width: 0;
}

/* 桌面端 */
@media (min-width: 720px) {
  .page-faq .step-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 20px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 64px);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 92px;
    border-left: 1px solid var(--line);
    padding-left: 18px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__list a {
    border: 0;
    border-bottom: 1px solid var(--line);
    background: transparent;
    padding: 11px 0;
    white-space: normal;
    font-size: 13.5px;
  }

  .page-faq .faq-toc__list a:hover,
  .page-faq .faq-toc__list a:focus-visible {
    border-bottom-color: var(--lime);
  }

  .page-faq .step-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px 16px;
  }

  .page-faq .step-track li {
    padding-left: 0;
    padding-top: 16px;
  }

  .page-faq .step-track li::before {
    left: 0;
    top: 0;
    width: 100%;
    height: 2px;
  }

  .page-faq .faq-mobile-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 4vw, 48px);
  }

  .page-faq .faq-inline-figure {
    margin-top: 0;
    position: sticky;
    top: 92px;
  }
}

@media (min-width: 1200px) {
  .page-faq .qa > summary {
    font-size: 1.03rem;
  }
}
<<<END>>>