.page-faq {
  --faq-ink: var(--c-char);
  --faq-line: rgba(22, 24, 29, .12);
  --faq-line-soft: rgba(22, 24, 29, .07);
  --faq-deep-line: rgba(250, 248, 244, .16);
  --faq-rail-w: 268px;
  --faq-gap: clamp(32px, 4vw, 68px);
  --faq-tint-red: rgba(176, 31, 36, .07);
}

/* ------- 首屏画板 ------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--c-navy);
  color: var(--text-on-deep);
  padding-top: calc(var(--header-offset) + clamp(24px, 4vw, 52px));
  padding-bottom: clamp(36px, 5vw, 64px);
}

.page-faq .faq-hero__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(250, 248, 244, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(250, 248, 244, .055) 1px, transparent 1px);
  background-size: 58px 58px;
}

.page-faq .faq-hero__grid::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(118deg, rgba(176, 31, 36, .38) 0%, rgba(176, 31, 36, 0) 46%),
    linear-gradient(296deg, rgba(232, 163, 58, .22) 0%, rgba(232, 163, 58, 0) 42%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
}

.page-faq .breadcrumb__link {
  color: rgba(250, 248, 244, .72);
  text-decoration: none;
}

.page-faq .breadcrumb__link:hover {
  color: var(--c-gold);
}

.page-faq .breadcrumb__sep {
  color: rgba(250, 248, 244, .38);
}

.page-faq .breadcrumb__item span[aria-current] {
  color: var(--c-gold);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-faq .faq-hero__title {
  margin: 0 0 22px;
  max-width: 18ch;
  font-size: clamp(30px, 5vw, 60px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -.02em;
  color: #fff;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.35vw, 17.5px);
  line-height: 1.88;
  color: var(--on-deep-soft);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(22px, 4vw, 54px);
  margin: clamp(30px, 4vw, 46px) 0 0;
  padding: clamp(18px, 2.4vw, 26px) 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-deep-line);
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.page-faq .faq-hero__num {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
}

.page-faq .faq-hero__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--on-deep-soft);
}

.page-faq .faq-hero__media {
  position: relative;
  z-index: 1;
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: 0;
  line-height: 0;
}

.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  height: clamp(150px, 24vw, 300px);
  object-fit: cover;
  opacity: .78;
  clip-path: polygon(0 0, 100% 0, 100% 86%, 0 100%);
}

/* ------- 过滤工具条 ------- */
.page-faq .faq-toolbar {
  position: relative;
  z-index: 2;
  background: var(--bg-solid);
  border-bottom: 1px solid var(--faq-line);
  padding: clamp(18px, 2.4vw, 26px) 0;
}

.page-faq .faq-toolbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.page-faq .faq-search {
  position: relative;
  flex: 1 1 300px;
  min-width: 0;
}

.page-faq .faq-search__icon {
  position: absolute;
  left: 15px;
  top: 50%;
  z-index: 1;
  width: 13px;
  height: 13px;
  margin-top: -8px;
  border: 1.5px solid var(--c-rock);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-search__icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -3px;
  width: 7px;
  height: 1.5px;
  background: var(--c-rock);
  transform: rotate(45deg);
}

.page-faq .faq-search__input {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px 12px 40px;
  font-family: var(--font-sans);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--faq-ink);
  background: var(--c-snow);
  border: 1px solid var(--faq-line);
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
  transition: border-color .16s var(--ease), box-shadow .16s var(--ease);
}

.page-faq .faq-search__input::placeholder {
  color: var(--c-rock);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
}

.page-faq .faq-search__input:focus {
  outline: none;
  border-color: var(--c-red);
  box-shadow: 0 0 0 3px rgba(176, 31, 36, .13);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1 1 100%;
}

.page-faq .filter-btn {
  padding: 8px 14px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: .03em;
  color: var(--faq-ink);
  background: transparent;
  border: 1px solid var(--faq-line);
  border-radius: 0;
  cursor: pointer;
  transition: background .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .filter-btn:hover {
  border-color: var(--c-red);
  color: var(--c-red);
}

.page-faq .filter-btn:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 2px;
}

.page-faq .filter-btn.is-active,
.page-faq .filter-btn[aria-pressed="true"] {
  background: var(--c-teal);
  border-color: var(--c-teal);
  color: #fff;
}

/* ------- 主体两栏 ------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(48px, 6vw, 88px);
}

/* ------- 左侧粘性索引 ------- */
.page-faq .faq-index {
  display: grid;
  gap: 18px;
}

.page-faq .faq-index__figure {
  position: relative;
  margin: 0;
  background: var(--c-navy);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
}

.page-faq .faq-index__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  max-height: 260px;
  object-fit: cover;
  opacity: .82;
}

.page-faq .faq-index__cap {
  position: absolute;
  left: 14px;
  bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--c-gold);
  text-transform: uppercase;
}

.page-faq .faq-index__title {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-rock);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px 10px 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--faq-ink);
  text-decoration: none;
  border-left: 3px solid transparent;
  background: transparent;
  transition: background .16s var(--ease), border-color .16s var(--ease), color .16s var(--ease);
}

.page-faq .faq-index__link:hover {
  background: var(--faq-tint-red);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: -2px;
}

.page-faq .faq-index__link.is-active {
  border-left-color: var(--c-red);
  background: rgba(176, 31, 36, .09);
  color: var(--c-red);
  font-weight: 700;
}

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

.page-faq .faq-index__num {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--c-rock);
}

.page-faq .faq-index__foot {
  margin: 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--faq-line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-rock);
}

.page-faq .faq-index__foot a {
  color: var(--c-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 图例标记 */
.page-faq .faq-mark {
  flex: none;
  display: inline-block;
  width: 11px;
  height: 11px;
  line-height: 0;
}

.page-faq .faq-mark--tri {
  width: 0;
  height: 0;
  background: none;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 11px solid currentColor;
}

.page-faq .faq-mark--cir {
  border-radius: 50%;
}

.page-faq .faq-mark--sq {
  border-radius: 0;
}

.page-faq .faq-mark--red { background: var(--c-red); color: var(--c-red); }
.page-faq .faq-mark--gold { background: var(--c-gold); color: var(--c-gold); }
.page-faq .faq-mark--teal { background: var(--c-teal); color: var(--c-teal); }
.page-faq .faq-mark--blue { background: var(--c-blue); color: var(--c-blue); }
.page-faq .faq-mark--deep { background: var(--c-red-deep); color: var(--c-red-deep); }
.page-faq .faq-mark--rock { background: var(--c-rock); color: var(--c-rock); }

/* ------- 问答区 ------- */
.page-faq .faq-questions {
  min-width: 0;
  display: grid;
  gap: clamp(34px, 4.4vw, 62px);
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-offset) + 28px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 6px 16px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--c-navy);
  margin-bottom: 4px;
}

.page-faq .faq-group__num {
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 2.3vw, 28px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--faq-ink);
}

.page-faq .faq-group__note {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--c-rock);
}

.page-faq .faq-list {
  display: grid;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-list > .qa:first-child {
  border-top: none;
}

/* 手风琴条目 */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-line);
  background: var(--bg-solid);
}

.page-faq .qa[hidden],
.page-faq .qa.is-filtered-out {
  display: none;
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 18px 18px 16px;
  list-style: none;
  cursor: pointer;
  font-size: clamp(15px, 1.25vw, 16.5px);
  font-weight: 700;
  line-height: 1.62;
  color: var(--faq-ink);
  transition: background .16s var(--ease), color .16s var(--ease);
}

.page-faq .qa__q::-webkit-details-marker { display: none; }
.page-faq .qa__q::marker { content: ""; }

.page-faq .qa__q:hover {
  background: var(--faq-tint-red);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: -3px;
}

.page-faq .qa__glyph {
  flex: none;
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1.5px solid var(--c-rock);
  transition: border-color .18s var(--ease);
}

.page-faq .qa__glyph::before,
.page-faq .qa__glyph::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  background: var(--c-rock);
  transform: translate(-50%, -50%);
  transition: transform .18s var(--ease), opacity .18s var(--ease), background .18s var(--ease);
}

.page-faq .qa__glyph::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

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

.page-faq details.qa[open] .qa__q {
  color: var(--c-red);
  background: rgba(176, 31, 36, .055);
}

.page-faq details.qa[open] .qa__glyph {
  border-color: var(--c-red);
}

.page-faq details.qa[open] .qa__glyph::before {
  background: var(--c-red);
}

.page-faq details.qa[open] .qa__glyph::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-faq .qa__a {
  position: relative;
  padding: 4px 20px 22px 46px;
}

.page-faq .qa__a::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 4px;
  bottom: 24px;
  width: 2px;
  background: var(--c-red);
  transform: scaleY(0);
  transform-origin: top center;
}

.page-faq details.qa[open] .qa__a::before {
  animation: faqLineIn .34s var(--ease) forwards;
}

.page-faq .qa__para {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: 14.8px;
  line-height: 1.9;
  color: #2b2e35;
}

.page-faq .qa__para a {
  color: var(--c-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .qa__ref {
  padding: 4px 9px;
  font-size: 11.5px;
  letter-spacing: .06em;
  color: #8a5a10;
  background: rgba(232, 163, 58, .2);
  border-left: 2px solid var(--c-gold);
}

.page-faq .qa__helpful {
  margin-left: auto;
  padding: 6px 13px;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-rock);
  background: transparent;
  border: 1px solid var(--faq-line);
  border-radius: 0;
  cursor: pointer;
  transition: color .16s var(--ease), border-color .16s var(--ease), background .16s var(--ease);
}

.page-faq .qa__helpful:hover {
  color: var(--c-teal);
  border-color: var(--c-teal);
  background: rgba(23, 149, 143, .09);
}

.page-faq .qa__helpful:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 2px;
}

@keyframes faqLineIn {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

/* ------- 底部行动区 ------- */
.page-faq .faq-cta {
  position: relative;
  overflow: hidden;
  background: var(--c-navy);
  color: var(--text-on-deep);
  padding: clamp(46px, 6vw, 86px) 0;
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 42%;
  height: 100%;
  background: linear-gradient(180deg, rgba(176, 31, 36, .42), rgba(176, 31, 36, 0) 82%);
  pointer-events: none;
}

.page-faq .faq-cta::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  height: 70%;
  background: linear-gradient(320deg, rgba(232, 163, 58, .18), rgba(232, 163, 58, 0) 70%);
  pointer-events: none;
}

.page-faq .faq-cta__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  align-items: center;
}

.page-faq .faq-cta__title {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -.015em;
  color: #fff;
}

.page-faq .faq-cta__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.88;
  color: var(--on-deep-soft);
}

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

.page-faq .faq-cta .btn--primary {
  background: var(--c-red);
  border-color: var(--c-red);
  color: #fff;
}

.page-faq .faq-cta .btn--primary:hover {
  background: var(--c-red-deep);
  border-color: var(--c-red-deep);
}

.page-faq .faq-cta .btn--ghost {
  background: transparent;
  border: 1px solid rgba(250, 248, 244, .42);
  color: var(--text-on-deep);
}

.page-faq .faq-cta .btn--ghost:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
}

/* ------- 响应式 ------- */
@media (min-width: 760px) {
  .page-faq .faq-toolbar__inner {
    flex-wrap: nowrap;
    align-items: center;
  }

  .page-faq .faq-search {
    flex: 0 1 340px;
  }

  .page-faq .faq-chips {
    flex: 1 1 auto;
    justify-content: flex-end;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-cta__links {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: var(--faq-gap);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-offset) + 24px);
    max-height: calc(100vh - var(--header-offset) - 48px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 6px;
  }

  .page-faq .faq-questions {
    padding-left: clamp(16px, 2vw, 34px);
    border-left: 1px solid var(--faq-line-soft);
    margin-left: calc(-1 * clamp(8px, 1vw, 18px));
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-hero__title {
    max-width: 15ch;
  }
}

@media (max-width: 620px) {
  .page-faq .faq-hero__img {
    clip-path: none;
    height: 168px;
  }

  .page-faq .faq-index__figure img {
    max-height: 180px;
  }

  .page-faq .faq-index__figure {
    clip-path: none;
  }

  .page-faq .qa__q {
    padding: 16px 14px;
    gap: 11px;
  }

  .page-faq .qa__a {
    padding: 2px 14px 20px 40px;
  }

  .page-faq .qa__a::before {
    left: 12px;
  }

  .page-faq .qa__helpful {
    margin-left: 0;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq details.qa[open] .qa__a::before {
    animation: none;
    transform: scaleY(1);
  }

  .page-faq .qa__glyph,
  .page-faq .qa__glyph::before,
  .page-faq .qa__glyph::after,
  .page-faq .filter-btn,
  .page-faq .qa__q,
  .page-faq .faq-index__link {
    transition: none;
  }
}