.page-faq {
  --faq-radius: 24px;
  --faq-radius-sm: 18px;
  --faq-item-bg: rgba(14, 15, 18, .55);
  --faq-item-open-bg: rgba(26, 28, 34, .78);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: clip;
  padding: clamp(18px, 3vw, 34px) 0 clamp(30px, 5vw, 58px);
}

.page-faq .faq-hero__flare {
  position: absolute;
  top: -32%;
  right: -20%;
  width: 58%;
  height: 176%;
  background: linear-gradient(155deg, rgba(255, 95, 31, .26), rgba(255, 138, 76, .06) 46%, rgba(42, 240, 208, 0) 72%);
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero > .fx-shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: end;
}

.page-faq .faq-hero__copy {
  max-width: 46rem;
  min-width: 0;
}

.page-faq .faq-hero__copy .fx-eyebrow {
  display: inline-block;
  margin-bottom: 18px;
}

.page-faq .faq-hero__copy .fx-lead {
  margin: 18px 0 0;
  max-width: 40ch;
  color: var(--grey);
  font-size: clamp(16px, 1.9vw, 20px);
  line-height: 1.8;
}

/* 运行读数面板 */
.page-faq .faq-board {
  position: relative;
  background: linear-gradient(160deg, rgba(26, 28, 34, .96), rgba(21, 23, 29, .78));
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow-card);
  min-width: 0;
}

.page-faq .faq-board::before {
  content: "";
  position: absolute;
  top: 18px;
  right: 20px;
  width: 34px;
  height: 3px;
  border-radius: var(--pill);
  background: linear-gradient(90deg, var(--flame), var(--cyan));
}

.page-faq .faq-board__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--grey);
  text-transform: uppercase;
}

.page-faq .faq-board__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-board__list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 14px;
  border-bottom: 1px dashed rgba(90, 98, 112, .42);
}

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

.page-faq .faq-board__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 32px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-faq .faq-board__num--flame {
  color: var(--flame);
}

.page-faq .faq-board__unit {
  margin-left: 4px;
  font-size: 14px;
  color: var(--grey);
}

.page-faq .faq-board__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--grey);
}

/* 检索框 */
.page-faq .faq-search {
  margin-top: clamp(26px, 4vw, 46px);
}

.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 640px;
  padding: 13px 22px;
  background: rgba(26, 28, 34, .9);
  border: 1px solid var(--line-soft);
  border-radius: var(--pill);
  transition: border-color .22s ease-out, background .22s ease-out, box-shadow .22s ease-out;
}

.page-faq .faq-search__field:focus-within {
  border-color: var(--flame);
  background: rgba(26, 28, 34, 1);
  box-shadow: 0 0 0 4px rgba(255, 95, 31, .13);
}

.page-faq .faq-search__icon {
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--flame);
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  outline: none;
}

.page-faq .faq-search__input::placeholder {
  color: rgba(154, 163, 174, .78);
}

.page-faq .faq-search__input::-webkit-search-cancel-button {
  -webkit-appearance: none;
  appearance: none;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  border-top: 1px solid var(--line-soft);
}

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

.page-faq .faq-rail {
  min-width: 0;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__list li {
  flex: none;
}

.page-faq .faq-rail__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px 9px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--pill);
  color: var(--grey);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease-out, border-color .2s ease-out, background .2s ease-out;
}

.page-faq .faq-rail__item:hover {
  color: var(--text);
  border-color: rgba(255, 95, 31, .5);
}

.page-faq .faq-rail__item.is-active {
  color: var(--white);
  border-color: var(--flame);
  background: rgba(255, 95, 31, .13);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--flame);
}

.page-faq .faq-rail__item.is-active .faq-rail__num {
  color: var(--cyan);
}

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

/* 分组 */
.page-faq .faq-group {
  margin-bottom: clamp(46px, 6vw, 78px);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--flame);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-group__intro {
  margin: 0 0 22px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--grey);
}

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

/* 折叠条目 */
.page-faq .faq-item {
  position: relative;
  overflow: hidden;
  background: var(--faq-item-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius-sm);
  transition: border-color .24s ease-out, background .24s ease-out;
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--flame), var(--flame-soft));
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform .28s cubic-bezier(.2, .7, .3, 1);
}

.page-faq .faq-item[open] {
  border-color: rgba(255, 95, 31, .42);
  background: var(--faq-item-open-bg);
}

.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 54px 18px 22px;
  list-style: none;
  cursor: pointer;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
  transition: color .2s ease-out;
}

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

.page-faq .faq-item__q:hover {
  color: var(--white);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--white);
}

.page-faq .faq-item__no {
  flex: none;
  width: 38px;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--flame);
}

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

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

.page-faq .faq-item__chev {
  position: absolute;
  top: 24px;
  right: 22px;
  width: 14px;
  height: 14px;
  border-right: 2px solid var(--grey);
  border-bottom: 2px solid var(--grey);
  transform: rotate(45deg) scale(.86);
  transition: transform .26s ease-out, border-color .26s ease-out;
}

.page-faq .faq-item[open] .faq-item__chev {
  transform: rotate(-135deg) scale(.86);
  border-color: var(--flame);
}

.page-faq .faq-item__a {
  padding: 0 22px 20px 74px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--grey);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 56ch;
}

/* 图证 */
.page-faq .faq-figure {
  margin: clamp(18px, 3vw, 26px) 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius);
  background: var(--panel-deep);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--panel);
}

.page-faq .faq-figure__cap {
  display: block;
  padding: 12px 18px;
  border-top: 1px solid rgba(90, 98, 112, .3);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--grey);
}

/* ---------- 联系收口 ---------- */
.page-faq .faq-rescue {
  padding-top: clamp(48px, 6vw, 84px);
}

.page-faq .faq-rescue__card {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px);
  background: linear-gradient(135deg, rgba(123, 45, 11, .6) 0%, rgba(14, 15, 18, .94) 60%);
  border: 1px solid rgba(255, 95, 31, .34);
  border-radius: var(--radius-xl);
}

.page-faq .faq-rescue__card::after {
  content: "";
  position: absolute;
  top: -42%;
  right: -12%;
  width: 48%;
  height: 184%;
  background: linear-gradient(150deg, rgba(255, 95, 31, .4), rgba(255, 95, 31, 0) 70%);
  clip-path: polygon(40% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-rescue__head {
  position: relative;
  z-index: 1;
  max-width: 52ch;
}

.page-faq .faq-rescue__title {
  margin: 14px 0 14px;
  font-size: clamp(23px, 3.2vw, 34px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-rescue__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: #E8E6E1;
}

.page-faq .faq-rescue__ways {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rescue__way {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 20px;
  background: rgba(14, 15, 18, .62);
  border: 1px solid rgba(90, 98, 112, .44);
  border-radius: var(--radius-md);
  min-width: 0;
}

.page-faq .faq-rescue__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-rescue__val {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.8vw, 17px);
  line-height: 1.5;
  color: var(--white);
  word-break: break-all;
}

.page-faq .faq-rescue__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-item__a {
    padding-right: 28px;
  }
  .page-faq .faq-rescue__ways {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 296px;
    gap: clamp(34px, 4vw, 64px);
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(34px, 4.4vw, 68px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
    margin-bottom: 0;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 4px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-rail__item {
    justify-content: flex-start;
    white-space: normal;
    padding: 11px 14px 11px 16px;
    border: 0;
    border-left: 3px solid transparent;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  }

  .page-faq .faq-rail__item.is-active {
    border-left-color: var(--flame);
    border-color: transparent;
    border-left-color: var(--flame);
    background: linear-gradient(90deg, rgba(255, 95, 31, .16), rgba(255, 95, 31, 0));
  }

  .page-faq .faq-item__q {
    padding: 20px 58px 20px 26px;
  }

  .page-faq .faq-item__a {
    padding: 0 30px 22px 80px;
  }

  .page-faq .faq-item__chev {
    right: 26px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-layout {
    grid-template-columns: 252px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item::before,
  .page-faq .faq-item__chev,
  .page-faq .faq-rail__item,
  .page-faq .faq-search__field {
    transition: none;
  }
}