.page-faq {
  --faq-panel: rgba(20, 34, 74, 0.66);
  --faq-stroke: rgba(31, 50, 102, 0.95);
  --faq-rule: rgba(139, 147, 167, 0.22);
  --faq-jade: linear-gradient(140deg, var(--jade-a) 0%, var(--jade-b) 100%);
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------------- 首屏 ---------------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(30px, 5vw, 56px) 0 clamp(38px, 6vw, 70px);
  background:
    radial-gradient(118% 92% at 88% 4%, rgba(46, 125, 116, 0.3), transparent 60%),
    radial-gradient(90% 70% at 2% 98%, rgba(182, 59, 46, 0.16), transparent 64%),
    linear-gradient(178deg, #0d1a3b 0%, var(--ink) 72%);
  border-bottom: 1px solid var(--faq-stroke);
}

.page-faq .faq-hero::before {
  content: "9172";
  position: absolute;
  right: -2%;
  top: 0;
  z-index: 0;
  font-family: var(--font-mono);
  font-size: clamp(104px, 20vw, 240px);
  font-weight: 700;
  line-height: 0.76;
  letter-spacing: 0.02em;
  color: rgba(199, 160, 58, 0.07);
  pointer-events: none;
  user-select: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(31, 50, 102, 0.34) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 50, 102, 0.34) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(85% 72% at 76% 20%, #000 0%, transparent 76%);
  mask-image: radial-gradient(85% 72% at 76% 20%, #000 0%, transparent 76%);
  pointer-events: none;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 2;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 5vw, 52px);
  align-items: end;
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  max-width: 17ch;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(29px, 4.4vw, 50px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 0 0 26px;
  max-width: 48ch;
  font-size: 16.5px;
  line-height: 1.82;
  color: rgba(244, 239, 228, 0.82);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 470px;
}

.page-faq .faq-stats .stat {
  min-width: 0;
  padding: 13px 14px;
  border: 1px solid var(--faq-stroke);
  border-radius: 12px;
  background: rgba(20, 34, 74, 0.62);
}

.page-faq .faq-stats .stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 23px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.05em;
  color: var(--gold);
}

.page-faq .faq-stats .stat-label {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--index-gray);
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--faq-stroke);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-float);
}

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

/* ---------------- 筛选与问答网格 ---------------- */

.page-faq .faq-browse {
  padding: clamp(38px, 6vw, 74px) 0 clamp(32px, 5vw, 58px);
}

.page-faq .faq-h2 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(22px, 2.8vw, 31px);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-browse__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 16px;
  margin-bottom: 20px;
}

.page-faq .faq-browse__head .faq-h2 {
  margin: 0;
}

.page-faq .faq-count {
  margin: 0;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--index-gray);
}

.page-faq .faq-count strong {
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
}

.page-faq .faq-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 11px;
  border: 1px solid var(--faq-stroke);
  border-radius: 20px;
  background: rgba(11, 22, 51, 0.84);
}

.page-faq .filter-pill {
  padding: 9px 14px;
  border: 1px solid var(--faq-stroke);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--gold-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .filter-pill:hover {
  border-color: rgba(199, 160, 58, 0.55);
  color: var(--paper);
}

.page-faq .filter-pill[aria-pressed="true"],
.page-faq .filter-pill.is-active {
  background: var(--faq-jade);
  border-color: transparent;
  color: var(--ink);
  box-shadow: 0 12px 28px rgba(46, 125, 116, 0.35);
}

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

.page-faq .filter-empty {
  margin: 18px 0 0;
  padding: 16px 18px;
  border: 1px dashed rgba(199, 160, 58, 0.42);
  border-radius: 14px;
  background: rgba(20, 34, 74, 0.5);
  color: var(--gold-soft);
  font-size: 15px;
  line-height: 1.7;
}

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

.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.page-faq .faq-item {
  position: relative;
  min-width: 0;
  border: 1px solid var(--faq-stroke);
  border-radius: 14px;
  background: var(--faq-panel);
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease),
    box-shadow 0.22s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(199, 160, 58, 0.42);
}

.page-faq .faq-item[open] {
  border-color: rgba(199, 160, 58, 0.6);
  background: rgba(20, 34, 74, 0.92);
  box-shadow: 0 18px 40px rgba(4, 9, 22, 0.45);
}

.page-faq .faq-item[open]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--faq-jade);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px 15px;
  list-style: none;
  cursor: pointer;
  border-radius: 14px;
}

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
  border-radius: 14px;
}

.page-faq .faq-q .index-num {
  flex: 0 0 auto;
  min-width: 58px;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--index-gray);
  transition: color 0.22s var(--ease);
}

.page-faq .faq-item[open] .faq-q .index-num {
  color: var(--gold);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-serif);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.58;
  color: var(--paper);
}

.page-faq .faq-q__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 6px;
  margin-left: 4px;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  border-radius: 2px;
  background: var(--gold);
  transition: transform 0.24s var(--ease), opacity 0.24s var(--ease);
}

.page-faq .faq-q__mark::before {
  left: 0;
  top: 50%;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-q__mark::after {
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.page-faq .faq-item[open] .faq-q__mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-a {
  padding: 14px 18px 18px;
  border-top: 1px dashed rgba(199, 160, 58, 0.26);
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.84);
  animation: faq-panel-in 0.26s var(--ease);
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 64ch;
}

.page-faq .faq-a__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
}

.page-faq .faq-a__foot .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-faq .copy-num {
  padding: 6px 12px;
  border: 1px solid rgba(199, 160, 58, 0.42);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--gold-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

.page-faq .copy-num:hover {
  background: rgba(199, 160, 58, 0.14);
  border-color: var(--gold);
  color: var(--paper);
}

.page-faq .copy-num.is-copied {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

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

/* ---------------- 下载与核对 ---------------- */

.page-faq .faq-verify {
  position: relative;
  padding: clamp(42px, 6.5vw, 84px) 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(20, 34, 74, 0.74) 22%,
    rgba(20, 34, 74, 0.74) 78%,
    transparent 100%
  );
  border-top: 1px solid var(--faq-stroke);
  border-bottom: 1px solid var(--faq-stroke);
}

.page-faq .faq-verify__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 46px);
  align-items: center;
}

.page-faq .faq-verify__media {
  margin: 0;
  border: 1px solid var(--faq-stroke);
  border-radius: 18px;
  overflow: hidden;
}

.page-faq .faq-verify__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-verify__copy .section-sub {
  max-width: 60ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.78);
}

.page-faq .faq-verify__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-verify__list li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 16px;
  border-left: 2px solid var(--jade-a);
  border-radius: 0 12px 12px 0;
  background: rgba(11, 22, 51, 0.62);
  font-size: 15px;
  line-height: 1.72;
  color: rgba(244, 239, 228, 0.86);
}

.page-faq .faq-verify__list b {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-verify__note {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--index-gray);
}

.page-faq .faq-verify__note a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.18s var(--ease);
}

.page-faq .faq-verify__note a:hover {
  color: var(--gold);
}

/* ---------------- 收束 ---------------- */

.page-faq .faq-tail {
  padding: clamp(36px, 5vw, 62px) 0 clamp(26px, 4vw, 46px);
}

.page-faq .faq-tail__line {
  max-width: 70ch;
  margin: 0 auto;
  text-align: center;
  font-size: 15.5px;
  line-height: 1.88;
  color: rgba(244, 239, 228, 0.74);
}

.page-faq .faq-tail__line a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.18s var(--ease);
}

.page-faq .faq-tail__line a:hover {
  color: var(--gold);
}

.page-faq .faq-seal-row {
  display: flex;
  justify-content: center;
  margin-top: clamp(26px, 4vw, 42px);
}

.page-faq .faq-seal {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border: 2px solid var(--cinnabar);
  border-radius: 9px;
  background: rgba(182, 59, 46, 0.1);
  color: var(--cinnabar);
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 23px;
  line-height: 1;
  letter-spacing: 0.04em;
  box-shadow: 0 0 0 5px rgba(182, 59, 46, 0.07);
}

/* ---------------- 断点 ---------------- */

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-filter-bar {
    position: sticky;
    top: 88px;
    z-index: 6;
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    box-shadow: 0 18px 44px rgba(4, 9, 22, 0.5);
  }

  .page-faq .faq-verify__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

@media (min-width: 860px) {
  .page-faq .faq-grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    gap: 16px;
    align-items: start;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-hero::before {
    right: -6%;
    font-size: 96px;
  }

  .page-faq .faq-stats {
    gap: 8px;
  }

  .page-faq .faq-stats .stat {
    padding: 10px 10px;
  }

  .page-faq .faq-stats .stat-value {
    font-size: 19px;
  }

  .page-faq .faq-stats .stat-label {
    font-size: 11px;
  }

  .page-faq .faq-q {
    gap: 9px;
    padding: 14px 14px 13px;
  }

  .page-faq .faq-q .index-num {
    min-width: 46px;
    font-size: 10.5px;
  }

  .page-faq .faq-q__text {
    font-size: 15px;
  }

  .page-faq .faq-a {
    padding: 12px 14px 15px;
    font-size: 14.5px;
  }

  .page-faq .filter-pill {
    padding: 8px 12px;
    font-size: 12px;
  }
}

/* ---------------- 动效 ---------------- */

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-a {
    animation: none;
  }

  .page-faq .filter-pill,
  .page-faq .faq-item,
  .page-faq .faq-q .index-num,
  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .copy-num,
  .page-faq .faq-tail__line a,
  .page-faq .faq-verify__note a {
    transition: none;
  }
}