.page-faq {
  background: var(--mb-night);
  color: var(--mb-cream);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4vw, 48px) 0 clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--mb-hair);
  background: linear-gradient(90deg, transparent, rgba(50, 224, 196, .42) 16%, rgba(255, 255, 255, .2) 62%, transparent);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
  align-items: center;
  margin-top: clamp(18px, 3vw, 30px);
}

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

.page-faq .faq-hero h1 {
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.08;
  letter-spacing: -.026em;
  font-weight: 800;
  margin: 10px 0 16px;
  color: var(--mb-cream);
}

.page-faq .faq-hero__lead {
  font-size: clamp(14px, 1.5vw, 16.5px);
  line-height: 1.72;
  color: rgba(242, 239, 230, .78);
  max-width: 56ch;
  margin: 0;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--mb-radius-lg);
  overflow: hidden;
  border: var(--mb-hair) solid rgba(50, 224, 196, .24);
  background: var(--mb-moss);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: clamp(36px, 5vw, 72px);
  }
}

/* ---------- 检索与分类 ---------- */
.page-faq .faq-tools {
  padding: clamp(30px, 5vw, 56px) 0 clamp(8px, 1.5vw, 16px);
}

.page-faq .faq-tools__panel {
  background: var(--mb-moss);
  border: var(--mb-hair) solid rgba(255, 255, 255, .1);
  border-radius: var(--mb-radius-lg);
  padding: clamp(18px, 3vw, 30px);
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  align-items: center;
}

@media (min-width: 780px) {
  .page-faq .faq-tools__panel {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  }
}

.page-faq .faq-tools__label {
  display: block;
  font-family: var(--mb-font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mb-cyan);
  margin-bottom: 10px;
}

.page-faq .faq-tools__input {
  width: 100%;
  box-sizing: border-box;
  font: inherit;
  font-size: 16px;
  padding: 14px 20px;
  border-radius: var(--mb-pill);
  border: var(--mb-hair) solid rgba(255, 255, 255, .18);
  background: rgba(7, 26, 21, .55);
  color: var(--mb-cream);
  outline: none;
  transition: border-color .25s var(--mb-ease), background .25s var(--mb-ease);
}

.page-faq .faq-tools__input::placeholder {
  color: rgba(242, 239, 230, .42);
}

.page-faq .faq-tools__input:focus {
  border-color: var(--mb-cyan);
  background: rgba(7, 26, 21, .78);
}

.page-faq .faq-tools__hint {
  margin: 10px 4px 0;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(242, 239, 230, .58);
}

.page-faq .faq-tools__figure {
  margin: 0;
  border-radius: var(--mb-radius-md);
  overflow: hidden;
  border: var(--mb-hair) solid rgba(255, 255, 255, .1);
}

.page-faq .faq-tools__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
}

.page-faq .faq-cats {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 18px 2px 4px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-cats::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-cats .chip {
  flex: 0 0 auto;
  text-decoration: none;
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-main {
  padding: clamp(28px, 5vw, 56px) 0 clamp(40px, 6vw, 72px);
}

.page-faq .faq-rail {
  display: none;
}

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

@media (min-width: 980px) {
  .page-faq .faq-rail {
    display: block;
    align-self: start;
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-rail .rail__title {
    font-family: var(--mb-font-mono);
    font-size: 11px;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--mb-cyan);
  }

  .page-faq .faq-rail .rail__link {
    text-decoration: none;
    display: block;
    padding: 6px 0;
  }

  .page-faq .faq-rail .rail__link[aria-current="true"] {
    color: var(--mb-cyan);
  }
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(34px, 5vw, 58px);
  scroll-margin-top: 104px;
}

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

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  column-gap: 12px;
  padding-bottom: 12px;
  border-bottom: var(--mb-hair) solid rgba(255, 255, 255, .18);
  margin-bottom: 16px;
}

.page-faq .faq-group__index {
  font-family: var(--mb-font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--mb-amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(19px, 2.6vw, 26px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -.015em;
  color: var(--mb-cream);
  min-width: 0;
}

.page-faq .faq-group__note {
  font-family: var(--mb-font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: rgba(242, 239, 230, .42);
  white-space: nowrap;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: var(--mb-hair) solid rgba(255, 255, 255, .1);
  border-radius: var(--mb-radius-md);
  background: rgba(20, 69, 58, .72);
  overflow: hidden;
  transition: background .3s var(--mb-ease), border-color .3s var(--mb-ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(50, 224, 196, .45);
}

.page-faq .faq-item[open] {
  background: var(--mb-cream);
  border-color: var(--mb-cyan);
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  column-gap: 12px;
  padding: 15px 16px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--mb-cream);
  transition: color .25s var(--mb-ease);
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item[open] > summary {
  color: var(--mb-ink);
  padding-bottom: 10px;
}

.page-faq .faq-item__no {
  font-family: var(--mb-font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  padding: 3px 9px;
  border-radius: var(--mb-pill);
  background: rgba(50, 224, 196, .12);
  color: var(--mb-cyan);
  border: 1px solid rgba(50, 224, 196, .3);
  transition: background .25s var(--mb-ease), color .25s var(--mb-ease), border-color .25s var(--mb-ease);
}

.page-faq .faq-item[open] .faq-item__no {
  background: var(--mb-cyan);
  color: var(--mb-ink);
  border-color: var(--mb-cyan);
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  font-family: var(--mb-font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--mb-amber);
  transition: color .25s var(--mb-ease);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
  color: var(--mb-clay);
}

.page-faq .faq-item__body {
  padding: 0 16px 16px;
  color: var(--mb-ink);
  font-size: 14.5px;
  line-height: 1.72;
}

.page-faq .faq-item__body p {
  margin: 0 0 8px;
}

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

.page-faq .faq-item__body a {
  color: var(--mb-clay);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 收口 ---------- */
.page-faq .faq-cta {
  padding: 0 0 clamp(48px, 7vw, 96px);
}

.page-faq .faq-cta__panel {
  background: linear-gradient(135deg, var(--mb-moss), var(--mb-night) 72%);
  border: var(--mb-hair) solid rgba(50, 224, 196, .24);
  border-radius: var(--mb-radius-lg);
  padding: clamp(24px, 4vw, 42px);
  display: grid;
  gap: 22px;
  align-items: center;
}

@media (min-width: 760px) {
  .page-faq .faq-cta__panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .9fr);
    gap: clamp(28px, 4vw, 48px);
  }
}

.page-faq .faq-cta__panel h2 {
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.2;
  letter-spacing: -.02em;
  margin: 8px 0 10px;
  color: var(--mb-cream);
}

.page-faq .faq-cta__panel p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(242, 239, 230, .78);
}

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

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-cta__actions .btn {
  text-decoration: none;
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 460px) {
  .page-faq .faq-group__note {
    display: none;
  }

  .page-faq .faq-group__head {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .page-faq .faq-item > summary {
    font-size: 14.5px;
    padding: 14px;
  }

  .page-faq .faq-item__body {
    padding: 0 14px 14px;
  }

  .page-faq .faq-cta__actions .btn {
    flex: 1 1 100%;
    justify-content: center;
    text-align: center;
  }
}