.page-faq {
  --faq-side-w: 236px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 58px) 0 clamp(24px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -22%;
  width: min(760px, 82%);
  height: 240%;
  background: linear-gradient(158deg, rgba(255, 90, 31, 0.17), rgba(232, 180, 74, 0.07) 42%, transparent 72%);
  transform: skewX(-13deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 46px);
  align-items: end;
}

.page-faq .faq-hero__lead h1 {
  margin: 10px 0 14px;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 4.6vw, 2.9rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--sand);
}

.page-faq .faq-hero__sub {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(0.93rem, 1.6vw, 1.02rem);
  line-height: 1.78;
  color: var(--paper);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-stat {
  display: grid;
  gap: 5px;
  padding: 13px 15px;
  background: var(--slate);
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-faq .faq-stat__label {
  font-size: 0.79rem;
  line-height: 1.5;
  color: var(--paper);
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-tools {
  border-bottom: 1px solid var(--line);
  background: rgba(19, 42, 74, 0.34);
  padding: clamp(12px, 2vw, 18px) 0;
}

.page-faq .faq-tools .filter-bar {
  margin: 0;
}

.page-faq .faq-tools__empty {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--gold);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-main {
  padding: clamp(26px, 5vw, 56px) 0 0;
}

.page-faq .faq-main__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-side {
  border: 1px solid var(--line-soft);
  background: rgba(19, 42, 74, 0.52);
}

.page-faq .faq-side__title {
  margin: 0;
  padding: 11px 14px;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sand);
  background: var(--slate);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 0;
  padding: 6px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.page-faq .faq-side__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border-left: 2px solid transparent;
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--paper);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t) ease, border-color var(--t) ease, background-color var(--t) ease;
}

.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  color: var(--sand);
  border-left-color: var(--orange);
  background: rgba(255, 90, 31, 0.09);
  outline: none;
}

.page-faq .faq-side__num {
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-side__note {
  display: grid;
  gap: 5px;
  padding: 12px 14px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-side__note-v {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-side__note-t {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--paper);
}

/* ---------- 分组 ---------- */
.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 104px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(28px, 4.4vw, 52px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--sand);
}

.page-faq .faq-group__body {
  display: grid;
  gap: 10px;
}

/* ---------- 折叠问答卡 ---------- */
.page-faq .qa {
  border: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  background: var(--slate);
  transition: border-left-color var(--t) ease, background-color var(--t) ease;
}

.page-faq .qa:hover {
  border-left-color: var(--gold);
}

.page-faq .qa[open] {
  border-left-color: var(--orange);
  background: rgba(19, 42, 74, 0.9);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 13px 15px;
  list-style: none;
  cursor: pointer;
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--sand);
}

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

.page-faq .qa__q::marker {
  content: "";
}

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

.page-faq .qa__tag {
  flex: none;
  margin-top: 2px;
}

.page-faq .qa__q-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa__q-mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 4px;
}

.page-faq .qa__q-mark::before,
.page-faq .qa__q-mark::after {
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform var(--t) ease, opacity var(--t) ease;
}

.page-faq .qa__q-mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa__q-mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__q-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  margin: 0 15px;
  padding: 12px 0 15px;
  border-top: 1px solid var(--line-soft);
  font-size: 0.91rem;
  line-height: 1.78;
  color: var(--paper);
}

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

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

.page-faq .qa__points {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-faq .qa__points li {
  position: relative;
  padding-left: 16px;
}

.page-faq .qa__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 2px;
  background: var(--cyan);
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 14px 0 0;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: var(--night);
}

.page-faq .faq-figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  margin: 0;
  padding: 9px 12px;
  border-top: 1px solid var(--line-soft);
  background: var(--slate);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  line-height: 1.6;
  color: var(--paper);
}

/* ---------- 尾部求助区 ---------- */
.page-faq .faq-help {
  margin-top: clamp(40px, 6vw, 84px);
  padding-top: clamp(26px, 4vw, 48px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.6vw, 44px);
  align-items: start;
}

.page-faq .faq-help__lead h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.95rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--sand);
}

.page-faq .faq-help__lead p {
  margin: 0 0 18px;
  max-width: 46ch;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--paper);
}

.page-faq .faq-help__cards {
  display: grid;
  gap: 12px;
}

.page-faq .faq-help__card {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--gold);
  background: var(--slate);
}

.page-faq .faq-help__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper);
}

.page-faq .faq-help__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.88rem, 2vw, 1rem);
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--amber);
  word-break: break-all;
}

.page-faq .faq-help__n {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .faq-help__n a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(24, 215, 196, 0.42);
}

.page-faq .faq-help__n a:hover,
.page-faq .faq-help__n a:focus-visible {
  border-bottom-color: var(--cyan);
  outline: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(262px, 1fr);
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }
}

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

  .page-faq .faq-side {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-side__list {
    display: block;
  }

  .page-faq .faq-side__link {
    white-space: normal;
  }
}

@media (max-width: 480px) {
  .page-faq .qa__q {
    font-size: 0.92rem;
    padding: 12px 12px;
  }

  .page-faq .qa__a {
    margin: 0 12px;
  }

  .page-faq .faq-figure__cap {
    font-size: 0.69rem;
  }
}