.page-faq {
  --faq-space: clamp(2.4rem, 6vw, 4.6rem);
  background:
    radial-gradient(90% 58% at 88% 0%, rgba(23, 194, 106, 0.16), transparent 62%),
    radial-gradient(70% 50% at 0% 100%, rgba(43, 35, 80, 0.55), transparent 70%),
    var(--c-night);
  color: var(--c-paper);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgba(110, 139, 147, 0.3);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: -24rem;
  left: -20rem;
  width: 48rem;
  height: 48rem;
  border-radius: 48% 52% 40% 60% / 55% 45% 58% 42%;
  background: conic-gradient(from 210deg at 50% 50%, rgba(23, 194, 106, 0.3), rgba(245, 165, 36, 0.13), transparent 62%);
  transform: rotate(-12deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.8rem, 5vw, 3rem);
  padding-block: clamp(2rem, 7vw, 4.4rem) clamp(2rem, 5vw, 3.2rem);
}

.page-faq .breadcrumb {
  color: rgba(244, 241, 233, 0.68);
}

.page-faq .page-title {
  margin: 0.7rem 0 0;
  font-size: clamp(1.9rem, 6.2vw, 3rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--c-paper);
}

.page-faq .faq-hero__lead {
  margin: 1.1rem 0 0;
  max-width: 46ch;
  font-size: 1.03rem;
  line-height: 1.82;
  color: rgba(244, 241, 233, 0.83);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.page-faq .faq-hero__meter {
  border: 1px solid rgba(110, 139, 147, 0.38);
  border-radius: var(--radius-l);
  background: linear-gradient(165deg, rgba(14, 46, 42, 0.95), rgba(11, 26, 43, 0.9));
  padding: 1.25rem 1.3rem 1.35rem;
  box-shadow: 0 18px 40px -28px rgba(0, 0, 0, 0.9);
}

.page-faq .faq-hero__meter-label {
  margin: 0;
  color: var(--c-amber);
  letter-spacing: 0.16em;
}

.page-faq .faq-meter {
  list-style: none;
  margin: 0.85rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-faq .faq-meter__item {
  display: grid;
  gap: 0.2rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid rgba(110, 139, 147, 0.22);
}

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

.page-faq .faq-meter__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 4.4vw, 1.95rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--c-turf);
}

.page-faq .faq-meter__plus {
  margin-left: 0.28em;
  font-size: 0.6em;
  color: var(--c-amber);
}

.page-faq .faq-meter__label {
  font-size: 0.86rem;
  line-height: 1.62;
  color: rgba(244, 241, 233, 0.7);
}

/* ---------- 双栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
  padding-block: clamp(2rem, 5vw, 3.2rem) clamp(2.4rem, 7vw, 5rem);
}

.page-faq .faq-rail {
  border-top: 2px solid var(--c-turf);
  padding-top: 0.9rem;
}

.page-faq .faq-rail__title {
  margin: 0 0 0.7rem;
  color: var(--c-mist);
  letter-spacing: 0.16em;
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.4rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid rgba(110, 139, 147, 0.35);
  border-radius: 999px;
  color: rgba(244, 241, 233, 0.8);
  font-size: 0.88rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--c-neon);
  border-color: var(--c-neon);
  background: rgba(127, 240, 176, 0.08);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--c-turf);
}

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

/* ---------- 筛选 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: clamp(1.6rem, 4vw, 2.4rem);
}

.page-faq .faq-filter .filter-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(110, 139, 147, 0.4);
  background: transparent;
  color: rgba(244, 241, 233, 0.78);
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-faq .faq-filter .filter-btn:hover,
.page-faq .faq-filter .filter-btn:focus-visible {
  color: var(--c-neon);
  border-color: var(--c-neon);
}

.page-faq .faq-filter .filter-btn[aria-pressed="true"] {
  background: var(--c-turf);
  border-color: var(--c-turf);
  color: var(--c-night);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: var(--faq-space);
}

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

.page-faq .faq-group__head {
  display: grid;
  gap: 0.45rem;
  padding-bottom: 1rem;
  margin-bottom: 1.3rem;
  border-bottom: 1px solid rgba(110, 139, 147, 0.3);
}

.page-faq .faq-group__idx {
  color: var(--c-turf);
  letter-spacing: 0.2em;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__verdict {
  margin: 0.25rem 0 0;
  max-width: 52ch;
  padding: 0.5rem 0 0.5rem 0.95rem;
  border-left: 3px solid var(--c-amber);
  font-size: 1rem;
  line-height: 1.72;
  color: var(--c-amber-pale);
}

/* ---------- 问答卡 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0.6rem;
}

.page-faq .qa {
  background: var(--c-paper);
  color: var(--c-night);
  border: 1px solid rgba(11, 26, 43, 0.1);
  border-radius: var(--radius-m);
  overflow: hidden;
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.page-faq .qa:hover {
  border-color: rgba(23, 194, 106, 0.5);
  box-shadow: 0 12px 26px -22px rgba(0, 0, 0, 0.9);
}

.page-faq .qa[open] {
  border-color: rgba(23, 194, 106, 0.62);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.95rem 1.05rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q::before {
  content: "+";
  flex: none;
  width: 1.15rem;
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--c-amber);
  text-align: center;
}

.page-faq .qa[open] .qa__q::before {
  content: "–";
}

.page-faq .qa__a {
  padding: 0 1.05rem 1.05rem 2.9rem;
  font-size: 0.96rem;
  line-height: 1.82;
  color: rgba(11, 26, 43, 0.82);
}

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

.page-faq .qa__a p + p {
  margin-top: 0.65rem;
}

.page-faq .qa__a a {
  color: #0e6a45;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--c-score);
}

/* ---------- 图与路径图 ---------- */
.page-faq .faq-media {
  margin: 0 0 1.3rem;
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid rgba(110, 139, 147, 0.3);
  border-radius: var(--radius-l);
  object-fit: cover;
}

.page-faq .faq-media--band img {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-media__caption {
  display: block;
  margin-top: 0.55rem;
  color: var(--c-mist);
  letter-spacing: 0.06em;
}

.page-faq .faq-path {
  margin: 0 0 1.4rem;
  padding: 1rem 1.1rem 0.85rem;
  border: 1px dashed rgba(110, 139, 147, 0.42);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, rgba(43, 35, 80, 0.42), rgba(11, 26, 43, 0.3));
}

.page-faq .faq-path svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(16rem, 0.85fr);
    align-items: center;
  }

  .page-faq .faq-media--square {
    max-width: 26rem;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 15rem minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 5.5rem;
  }

  .page-faq .faq-rail__list {
    display: grid;
    gap: 0.15rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    border-color: transparent;
    border-radius: var(--radius-s);
    padding: 0.5rem 0.7rem;
  }
}

@media (max-width: 460px) {
  .page-faq .qa__a {
    padding-left: 1.05rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .faq-rail__link,
  .page-faq .faq-filter .filter-btn {
    transition: none;
  }
}