.page-faq {
  position: relative;
  background-image:
    radial-gradient(90% 60% at 88% 2%, rgba(47, 195, 176, 0.07), transparent 58%),
    radial-gradient(70% 50% at 4% 96%, rgba(226, 59, 59, 0.06), transparent 62%);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 34px) 0 42px;
  background:
    radial-gradient(95% 120% at 100% 0%, rgba(47, 195, 176, 0.1), transparent 60%),
    linear-gradient(180deg, rgba(17, 29, 47, 0.92), rgba(8, 17, 31, 0.32));
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--red) 0 88px, var(--yellow) 88px 128px, var(--line) 128px 100%);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(27px, 5.2vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 900;
  max-width: 16em;
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-search {
  margin-top: 26px;
  padding: 14px 14px 16px;
  border: 1px solid var(--line);
  background: rgba(17, 29, 47, 0.74);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--yellow);
  box-shadow: inset 0 0 0 1px var(--yellow-soft);
}

.page-faq .faq-search__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--muted-dim);
}

.page-faq .faq-search__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-hero__visual {
  position: relative;
  padding: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 12px 12px 0 rgba(8, 17, 31, 0.55);
}

.page-faq .faq-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  border: 1px solid var(--line-soft);
}

.page-faq .faq-hero__stamp {
  position: absolute;
  top: -1px;
  right: -1px;
  padding: 5px 10px;
  background: var(--red);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

/* 主体两栏 */
.page-faq .faq-layout {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-faq .faq-index {
  border: 1px solid var(--line);
  background: rgba(17, 29, 47, 0.66);
  padding: 16px 14px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-dim);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 8px 9px 10px;
  border-left: 2px solid var(--line);
  color: var(--white);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.45;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--red);
  background: var(--panel-up);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--yellow);
}

.page-faq .faq-index__foot {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-index__foot p {
  margin: 0 0 10px;
}

/* 问答组 */
.page-faq [id^="group-"] {
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-group {
  padding-bottom: 30px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 10px;
}

.page-faq .faq-group__head {
  position: relative;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 12px;
  padding-top: 18px;
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--red) 0 56px, var(--yellow) 56px 88px, var(--line) 88px 100%);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--yellow);
  letter-spacing: 0.08em;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(20px, 3vw, 27px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 900;
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted-dim);
}

.page-faq .faq-figure {
  margin: 16px 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 8px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 5;
  object-fit: cover;
  border: 1px solid var(--line-soft);
}

.page-faq .faq-figure figcaption {
  margin-top: 9px;
  padding: 0 2px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted-dim);
}

.page-faq .faq-group__grid {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

/* 折叠条目 */
.page-faq .faq-item {
  border: 1px solid var(--line);
  border-left: 2px solid transparent;
  background: var(--panel);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: var(--yellow);
}

.page-faq .faq-item[open] {
  border-left-color: var(--red);
  background: var(--panel-up);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 13px 14px;
  list-style: none;
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--white);
}

.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: 15px;
  line-height: 1.3;
  color: var(--yellow);
}

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

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

.page-faq .faq-item__a {
  padding: 12px 14px 15px;
  border-top: 1px dashed var(--line);
  font-size: 13.8px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-faq .faq-item__a ol,
.page-faq .faq-item__a ul {
  margin: 8px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 4px;
}

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

.page-faq .faq-item__a a {
  color: var(--yellow-soft);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-faq .faq-item__a a:hover {
  color: var(--yellow);
}

/* 收束 CTA */
.page-faq .faq-cta {
  display: grid;
  gap: 16px;
  margin-top: 14px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  background: linear-gradient(90deg, rgba(226, 59, 59, 0.16), rgba(27, 42, 66, 0.6) 56%, rgba(17, 29, 47, 0.92));
}

.page-faq .faq-cta h2 {
  margin: 0 0 6px;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.2;
  font-weight: 900;
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 46em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 桌面端 */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 48px) 0 54px;
  }

  .page-faq .faq-hero::after {
    content: "";
    position: absolute;
    top: -150px;
    right: -110px;
    width: 440px;
    height: 440px;
    border: 1px solid rgba(43, 59, 83, 0.8);
    border-radius: 50%;
    pointer-events: none;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 44px;
    align-items: center;
  }

  .page-faq .faq-hero__lead {
    font-size: 16.5px;
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 26px 28px;
  }
}

@media (min-width: 820px) {
  .page-faq .faq-group__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 12px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 44px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 18px 16px;
  }
}
<<<END>>>