.page-faq {
  --faq-shift: 0.14;
  --faq-shadow: 6px 6px 0 rgba(11, 27, 58, 0.14);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(26px, 4vw, 52px);
  padding-bottom: clamp(34px, 5vw, 68px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -28%;
  width: min(600px, 78vw);
  height: min(600px, 78vw);
  background: linear-gradient(135deg, rgba(107, 61, 245, 0.16), rgba(255, 106, 26, 0.18));
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero .ns-container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.page-faq .faq-hero__title {
  font-family: var(--ns-font-title);
  font-size: clamp(34px, 5.4vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ns-navy);
  margin: 12px 0 0;
  max-width: 17em;
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--ns-orange);
  background-image: linear-gradient(var(--ns-orange), var(--ns-orange));
  background-repeat: no-repeat;
  background-size: 100% 4px;
  background-position: 0 100%;
  padding-bottom: 2px;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.72;
  color: var(--ns-ink);
}

.page-faq .faq-hero__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--ns-edge);
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-hero__num {
  font-family: var(--ns-font-data);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--ns-navy);
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__lab {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ns-ink);
  opacity: 0.78;
}

.page-faq .faq-hero__frame {
  position: relative;
  margin: 0;
  border: 1px solid var(--ns-ink);
  background: var(--ns-navy-deep);
  box-shadow: 10px 10px 0 rgba(11, 27, 58, 0.16);
  transform: rotate(-1.4deg);
}

.page-faq .faq-hero__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-hero__frame figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 8px 12px;
  background: var(--ns-orange);
  color: var(--ns-navy-deep);
  font-family: var(--ns-font-data);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

/* ---------- 筛选带 ---------- */
.page-faq .faq-main {
  padding-top: clamp(24px, 3vw, 40px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--ns-edge);
}

.page-faq .faq-filter__label {
  margin: 0;
  font-family: var(--ns-font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--ns-violet);
}

.page-faq .faq-empty {
  margin: 20px 0 0;
  padding: 14px 16px;
  border: 1px dashed var(--ns-edge);
  background: var(--ns-paper);
  font-size: 15px;
  color: var(--ns-ink);
}

.page-faq .faq-empty[hidden] {
  display: none;
}

/* ---------- 目录 + 问答 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
  padding-top: clamp(22px, 3vw, 36px);
}

.page-faq .faq-rail {
  padding-bottom: 6px;
}

.page-faq .faq-rail .ns-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail .ns-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border: 1px solid var(--ns-edge);
  background: var(--ns-paper);
  text-decoration: none;
  color: var(--ns-navy);
  font-size: 14px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-rail .ns-rail__link:hover,
.page-faq .faq-rail .ns-rail__link.is-active {
  border-color: var(--ns-orange);
  background: #fff;
}

.page-faq .faq-rail .ns-rail__num {
  font-family: var(--ns-font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ns-orange);
}

.page-faq .faq-group {
  padding-bottom: clamp(24px, 3vw, 38px);
  border-bottom: 1px dashed var(--ns-edge);
  scroll-margin-top: 110px;
}

.page-faq .faq-group:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-item {
  margin-top: 10px;
  border: 1px solid var(--ns-ink);
  background: var(--ns-paper);
  box-shadow: 3px 3px 0 rgba(59, 42, 34, 0.1);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-item:hover {
  transform: translateY(-2px);
  box-shadow: 5px 6px 0 rgba(59, 42, 34, 0.16);
}

.page-faq .faq-item[open] {
  box-shadow: 5px 6px 0 rgba(255, 106, 26, 0.26), inset 3px 0 0 var(--ns-orange);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ns-navy);
}

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

.page-faq .faq-item__q-text {
  flex: 1 1 auto;
}

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1px solid var(--ns-ink);
  background: var(--ns-cream-2);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--ns-navy);
}

.page-faq .faq-item__mark::before {
  left: 4px;
  right: 4px;
  top: 8px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  top: 4px;
  bottom: 4px;
  left: 8px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-item__mark {
  background: var(--ns-lime);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  display: none;
}

.page-faq .faq-item__a {
  padding: 14px 16px 16px;
  border-top: 1px solid var(--ns-edge);
  background: var(--ns-cream);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ns-ink);
}

.page-faq .faq-item__a a {
  color: var(--ns-navy);
  text-decoration: underline;
  text-decoration-color: var(--ns-orange);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-faq .faq-key {
  font-family: var(--ns-font-data);
  font-weight: 700;
  color: var(--ns-navy);
  background-image: linear-gradient(transparent 60%, rgba(182, 242, 74, 0.8) 60%);
  padding: 0 2px;
}

/* ---------- 联系与反馈 ---------- */
.page-faq .faq-support {
  position: relative;
  padding-top: 0;
  padding-bottom: clamp(40px, 6vw, 76px);
  overflow: hidden;
}

.page-faq .faq-support__strip {
  height: 10px;
  margin-bottom: clamp(28px, 4vw, 48px);
  background: repeating-linear-gradient(90deg, var(--ns-orange) 0 14px, transparent 14px 30px);
  opacity: 0.9;
}

.page-faq .faq-support__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 54px);
  align-items: center;
}

.page-faq .faq-support__num {
  display: inline-block;
  font-family: var(--ns-font-data);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--ns-orange);
}

.page-faq .faq-support__title {
  margin: 10px 0 0;
  font-family: var(--ns-font-title);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ns-cream);
}

.page-faq .faq-support__lede {
  margin: 14px 0 0;
  max-width: 32em;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(244, 237, 226, 0.86);
}

.page-faq .faq-support__list {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
}

.page-faq .faq-support__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ns-cream);
}

.page-faq .faq-support__list li::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  background: var(--ns-lime);
  transform: rotate(45deg);
}

.page-faq .faq-support__note {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 237, 226, 0.72);
}

.page-faq .faq-support__note a {
  color: var(--ns-orange-2);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-support__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--ns-cream-2);
  background: var(--ns-navy-deep);
  box-shadow: 8px 8px 0 rgba(255, 106, 26, 0.28);
}

.page-faq .faq-support__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (max-width: 899px) {
  .page-faq .faq-hero__frame {
    transform: none;
    box-shadow: var(--faq-shadow);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-support__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(28px, 3vw, 48px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-rail .ns-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 6px;
  }

  .page-faq .faq-rail .ns-rail__link {
    width: 100%;
    justify-content: flex-start;
    padding: 9px 12px;
    border-color: transparent;
    border-left: 2px solid var(--ns-edge);
    background: transparent;
  }

  .page-faq .faq-rail .ns-rail__link:hover,
  .page-faq .faq-rail .ns-rail__link.is-active {
    border-left-color: var(--ns-orange);
    background: var(--ns-paper);
  }
}
<<<END>>>