.page-faq {
  display: block;
  position: relative;
  overflow-x: clip;
  color: var(--text);
  padding-bottom: var(--gap-xl);
  background:
    radial-gradient(880px 520px at 92% -8%, rgba(255, 106, 43, 0.12), transparent 62%),
    radial-gradient(720px 460px at 2% 4%, rgba(43, 227, 200, 0.09), transparent 60%),
    var(--deep);
}

.page-faq .faq-top {
  position: relative;
  z-index: 2;
  padding-top: 26px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 22px 0 var(--gap-l);
  z-index: 1;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(143, 163, 184, 0.07) 1px, transparent 1px),
    linear-gradient(180deg, rgba(143, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 88px 88px, 88px 88px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-m);
  align-items: end;
}

.page-faq .faq-hero__intro {
  max-width: 46ch;
}

.page-faq .faq-hero__intro h1 {
  margin: 14px 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 6.6vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
  text-wrap: balance;
}

.page-faq .faq-hero__lede {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-faq .faq-hero__jumps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.page-faq .faq-hero__jumps a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--text-soft);
  background: rgba(20, 38, 60, 0.82);
  border: 1px solid var(--hair);
  clip-path: var(--cut-btn);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-hero__jumps a:hover,
.page-faq .faq-hero__jumps a:focus-visible {
  color: var(--white);
  border-color: rgba(43, 227, 200, 0.55);
  background: rgba(43, 227, 200, 0.1);
}

.page-faq .faq-hero__art {
  margin: 0;
  padding: 10px 10px 0;
  background: var(--graphite);
  border-left: 3px solid var(--lava);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  background: var(--midnight);
}

.page-faq .faq-hero__cap {
  display: block;
  padding: 10px 2px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  position: relative;
  padding-top: var(--gap-l);
  border-top: 1px solid var(--hair-soft);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-m);
  align-items: start;
}

.page-faq .faq-rail {
  padding: 16px 0 16px 18px;
  border-left: 2px solid var(--hair);
  background: linear-gradient(180deg, rgba(20, 38, 60, 0.5), transparent 80%);
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
}

.page-faq .faq-rail__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 0;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--text-dim);
  border-bottom: 1px solid var(--hair-soft);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.page-faq .faq-rail__list a .num {
  font-size: 12px;
  color: var(--steel);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--white);
  padding-left: 4px;
}

.page-faq .faq-rail__list a:hover .num {
  color: var(--cyan);
}

.page-faq .faq-rail__note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-faq .faq-rail__note a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(43, 227, 200, 0.4);
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-l);
}

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

.page-faq .faq-group__head {
  position: relative;
  padding-left: 22px;
  margin-bottom: 8px;
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: var(--steel);
  transition: background-color 0.25s ease;
}

.page-faq .faq-group.is-current .faq-group__head::before {
  background: var(--cyan);
}

.page-faq .faq-group__index {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--steel);
  transition: color 0.25s ease;
}

.page-faq .faq-group.is-current .faq-group__index {
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 6px 0 4px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-dim);
}

.page-faq .faq-group__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-list {
  min-width: 0;
}

.page-faq .qa {
  border-top: 1px solid var(--hair);
}

.page-faq .qa:last-child {
  border-bottom: 1px solid var(--hair);
}

.page-faq .qa__q {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin: 0;
  padding: 18px 4px 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(15.5px, 2.5vw, 17px);
  line-height: 1.55;
  color: var(--white);
  transition: color 0.2s ease;
}

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

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

.page-faq .qa__q::before {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.25s ease;
}

.page-faq .qa[open] .qa__q::before {
  transform: rotate(-135deg);
}

.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--cyan);
}

.page-faq .qa__a {
  margin: 0 0 20px 24px;
  padding: 16px 18px;
  background: var(--graphite);
  border-left: 3px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-faq .qa__a p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

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

.page-faq .qa__a a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(43, 227, 200, 0.42);
}

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

.page-faq .field {
  font-weight: 600;
  color: var(--white);
  border-bottom: 1px solid rgba(43, 227, 200, 0.7);
}

/* ---------- 账号章节侧图 ---------- */
.page-faq .faq-side {
  margin: 0;
  padding: 10px 10px 0;
  background: var(--midnight);
  border-top: 2px solid var(--lava-deep);
}

.page-faq .faq-side__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: var(--graphite);
}

.page-faq .faq-side__cap {
  display: block;
  padding: 10px 2px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 底部求助 ---------- */
.page-faq .faq-support {
  padding-top: var(--gap-xl);
}

.page-faq .faq-support__panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding: 30px 24px;
  background:
    linear-gradient(120deg, rgba(43, 227, 200, 0.08), transparent 55%),
    var(--graphite);
  border-left: 4px solid var(--lava);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
}

.page-faq .faq-support__text h2 {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.6vw, 2.1rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-faq .faq-support__text p {
  margin: 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: center;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: var(--gap-l);
  }

  .page-faq .faq-support__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 34px 32px;
  }

  .page-faq .faq-support__actions {
    flex-direction: column;
    align-items: stretch;
    justify-items: center;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1040px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: var(--gap-l);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 118px;
  }

  .page-faq .qa__a {
    margin-left: 34px;
    padding: 18px 24px;
  }

  .page-faq .faq-group--account .faq-group__body {
    grid-template-columns: minmax(0, 1fr) 268px;
    gap: var(--gap-m);
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-hero__intro h1 {
    max-width: 15ch;
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q::before,
  .page-faq .qa__q,
  .page-faq .faq-hero__jumps a,
  .page-faq .faq-rail__list a,
  .page-faq .faq-group__head::before,
  .page-faq .faq-group__index {
    transition: none;
  }
}