.page-faq {
  --faq-hair: rgba(185, 198, 204, 0.18);
  --faq-card: rgba(20, 57, 47, 0.55);
  --faq-quiet: rgba(247, 244, 236, 0.78);
  --faq-radius: 22px;
  position: relative;
  overflow-x: clip;
  color: var(--paper);
  background:
    radial-gradient(120% 55% at 88% -8%, rgba(43, 242, 212, 0.12), transparent 62%),
    radial-gradient(90% 45% at -12% 6%, rgba(255, 106, 31, 0.10), transparent 60%),
    linear-gradient(180deg, #0C2B26 0%, #0A2621 58%, #0A2621 100%);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .faq-crumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 44px) 0 clamp(26px, 4vw, 46px);
  position: relative;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-display);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 12px 0 18px;
  max-width: 15em;
}

.page-faq .faq-hero .lede {
  max-width: 40em;
  color: var(--faq-quiet);
  line-height: 1.8;
  margin: 0;
}

.page-faq .faq-board {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(20, 57, 47, 0.92), rgba(18, 21, 23, 0.92));
  border: 1px solid rgba(43, 242, 212, 0.22);
  box-shadow: 0 24px 60px -40px rgba(43, 242, 212, 0.5);
  overflow: hidden;
}

.page-faq .faq-board::before {
  content: "";
  position: absolute;
  inset: -40% -10% auto -10%;
  height: 70%;
  background: linear-gradient(100deg, rgba(43, 242, 212, 0.18), transparent 70%);
  transform: skewY(-6deg);
  pointer-events: none;
}

.page-faq .faq-board__label {
  position: relative;
  margin: 0 0 16px;
  font-size: var(--fs-note);
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-board__grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
}

.page-faq .faq-board__fig {
  margin: 0;
  font-family: var(--font-num);
  display: flex;
  align-items: baseline;
  gap: 4px;
  color: var(--orange);
}

.page-faq .faq-board__num {
  font-size: var(--num-md);
  line-height: 1;
  font-weight: 700;
}

.page-faq .faq-board__unit {
  font-family: var(--font-body);
  font-size: var(--fs-note);
  color: var(--silver);
}

.page-faq .faq-board__cap {
  margin: 6px 0 0;
  font-size: var(--fs-note);
  color: var(--faq-quiet);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 40px);
  align-items: start;
  margin-top: clamp(10px, 2vw, 22px);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group + .faq-group,
.page-faq .faq-group + .faq-band,
.page-faq .faq-band + .faq-group {
  margin-top: clamp(34px, 5vw, 58px);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding: 16px 22px;
  border-radius: var(--radius-lg);
  background: linear-gradient(100deg, rgba(43, 242, 212, 0.18), rgba(20, 57, 47, 0.86) 64%);
  border: 1px solid rgba(43, 242, 212, 0.26);
}

.page-faq .faq-group--orange .faq-group__head {
  background: linear-gradient(100deg, rgba(255, 106, 31, 0.2), rgba(20, 57, 47, 0.86) 64%);
  border-color: rgba(255, 106, 31, 0.28);
}

.page-faq .faq-group--deep .faq-group__head {
  background: linear-gradient(100deg, rgba(185, 198, 204, 0.12), rgba(18, 21, 23, 0.88) 64%);
  border-color: var(--faq-hair);
}

.page-faq .faq-group__num {
  font-family: var(--font-num);
  font-size: var(--fs-h2);
  line-height: 1;
  color: var(--orange);
  letter-spacing: 0.02em;
}

.page-faq .faq-group--orange .faq-group__num {
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-h2);
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.page-faq .faq-group__note {
  flex: 1 1 100%;
  margin: 6px 0 0;
  font-size: var(--fs-note);
  line-height: 1.7;
  color: var(--faq-quiet);
  max-width: 62ch;
}

.page-faq .faq-list {
  margin-top: 14px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-radius: var(--radius-md);
  background: var(--faq-card);
  border: 1px solid var(--faq-hair);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item:hover {
  border-color: rgba(43, 242, 212, 0.4);
}

.page-faq .faq-item[open] {
  border-color: rgba(43, 242, 212, 0.42);
  background: rgba(20, 57, 47, 0.78);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-h3);
  line-height: 1.45;
  color: var(--paper);
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -4px;
  border-radius: var(--radius-md);
}

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

.page-faq .faq-item__tick {
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  margin-top: 7px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.26s var(--ease), border-color 0.26s var(--ease);
}

.page-faq .faq-item[open] .faq-item__tick {
  transform: rotate(225deg);
  border-color: var(--orange);
}

.page-faq .faq-item__a {
  padding: 0 18px 18px 18px;
  max-width: 64ch;
  color: var(--faq-quiet);
  line-height: 1.8;
}

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

.page-faq .faq-item__a p + p {
  margin-top: 8px;
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 242, 212, 0.5);
}

.page-faq .faq-item__a a:hover {
  color: var(--cyan-soft);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure,
.page-faq .faq-band {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

.page-faq .faq-band {
  margin: clamp(34px, 5vw, 58px) 0 0;
}

.page-faq .media-frame {
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--faq-hair);
  background: rgba(18, 21, 23, 0.6);
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .media-frame__caption {
  padding: 12px 18px;
  font-size: var(--fs-note);
  color: var(--silver);
}

/* ---------- 结尾出口 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(34px, 5vw, 58px);
  padding: clamp(24px, 4vw, 40px);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(255, 106, 31, 0.22), transparent 62%),
    linear-gradient(160deg, rgba(20, 57, 47, 0.95), rgba(18, 21, 23, 0.95));
  border: 1px solid rgba(255, 106, 31, 0.28);
}

.page-faq .faq-cta h2 {
  margin: 10px 0 12px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-h2);
  line-height: 1.25;
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 52ch;
  color: var(--faq-quiet);
  line-height: 1.8;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-cta__links {
  margin-top: 16px;
  font-size: var(--fs-note);
  color: var(--silver);
}

.page-faq .faq-cta__links a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 242, 212, 0.45);
  margin: 0 2px;
}

/* ---------- 组内索引 ---------- */
.page-faq .faq-index {
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  background: rgba(18, 21, 23, 0.78);
  border: 1px solid var(--faq-hair);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: var(--fs-note);
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list li {
  margin: 0;
}

.page-faq .faq-index .index-list__link {
  display: inline-block;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-note);
  color: var(--paper);
  text-decoration: none;
  background: rgba(30, 74, 68, 0.75);
  border: 1px solid transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-index .index-list__link:hover,
.page-faq .faq-index .index-list__link[aria-current="true"] {
  background: rgba(43, 242, 212, 0.18);
  border-color: rgba(43, 242, 212, 0.55);
  color: var(--cyan-soft);
}

.page-faq .faq-index__foot {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-index__foot p {
  margin: 0 0 10px;
  font-size: var(--fs-note);
  color: var(--silver);
}

.page-faq .faq-index__foot .btn {
  width: 100%;
  justify-content: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-board__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-item__a {
    padding-left: 22px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(0, 1fr) 236px;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 112px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .page-faq .faq-index .index-list__link {
    display: block;
    border-radius: var(--radius-sm);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__tick,
  .page-faq .faq-index .index-list__link {
    transition: none;
  }
}