.page-faq {
  --faq-rule: var(--line);
  --faq-side-w: 15rem;
  --faq-shell-pad: clamp(2rem, 6vw, 4rem);
  background: var(--paper);
  color: var(--ink);
}

.page-faq__crumb {
  padding-top: clamp(0.75rem, 2vw, 1.25rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(1.5rem, 4vw, 3rem) clamp(2rem, 5vw, 3.5rem);
  position: relative;
  z-index: 0;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  grid-template-columns: minmax(0, 1fr);
  align-items: end;
}

.page-faq .faq-hero__copy {
  max-width: 36rem;
}

.page-faq .faq-hero .display-title {
  margin: 0.4rem 0 1rem;
}

.page-faq .faq-hero .lede {
  max-width: 32rem;
  color: var(--ink-soft);
  margin: 0;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-faq .faq-hero__art {
  position: relative;
  margin: 0;
  z-index: 0;
}

.page-faq .faq-hero__art::after {
  content: "";
  position: absolute;
  inset: 0.75rem -0.75rem -0.75rem 0.75rem;
  border: 1px solid rgba(226, 112, 58, 0.55);
  border-radius: var(--radius);
  pointer-events: none;
  z-index: -1;
}

.page-faq .media-frame {
  margin: 0;
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  background: var(--paper-soft);
}

.page-faq .media-frame__caption {
  margin-top: 0.6rem;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-stage {
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.page-faq .faq-tools {
  border-top: 1px solid var(--faq-rule);
  padding-top: 1.15rem;
  padding-bottom: 1.75rem;
}

.page-faq .faq-tools__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.35rem 1rem;
  margin-bottom: 0.9rem;
}

.page-faq .faq-tools__head .index-label {
  margin: 0;
  color: var(--ink);
}

.page-faq .faq-tools__hint {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .filter-btn {
  appearance: none;
  background: var(--print);
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  padding: 0.4rem 0.9rem;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background-color 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .filter-btn:hover {
  border-color: var(--dusk);
  color: var(--dusk);
}

.page-faq .filter-btn[aria-pressed="true"],
.page-faq .filter-btn.is-active {
  background: var(--deep);
  border-color: var(--deep);
  color: var(--paper-soft);
}

.page-faq .filter-btn[aria-pressed="true"]:hover,
.page-faq .filter-btn.is-active:hover {
  color: var(--paper-soft);
}

/* ---------- 主栏 + 侧栏 ---------- */
.page-faq .faq-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
}

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

.page-faq .faq-block {
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

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

.page-faq .faq-block__title {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 0 0 0.9rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--faq-rule);
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.page-faq .faq-block__title .index-label {
  margin: 0;
  color: var(--dusk);
  font-weight: 800;
}

/* ---------- 问题列表 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  background: var(--paper-soft);
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--ink);
  background: #fff;
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 1.9rem minmax(0, 1fr) 1rem;
  align-items: center;
  gap: 0.7rem;
  padding: 0.9rem 1rem 0.9rem 0.8rem;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  line-height: 1.55;
}

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

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

.page-faq .faq-item__num {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--dusk);
}

.page-faq .faq-item__text {
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-item__arrow {
  justify-self: end;
  width: 0.68rem;
  height: 0.68rem;
  background: var(--ink);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  transition: transform 220ms var(--ease), background-color 220ms var(--ease);
}

.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(180deg);
  background: var(--dusk);
}

.page-faq .faq-item__a {
  padding: 0 1.1rem 1.15rem 3.4rem;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-item__a p {
  margin: 0 0 0.75rem;
}

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

.page-faq .faq-item__a a {
  color: var(--deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--glacier);
}

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

.page-faq .faq-compare {
  margin: 0 0 1.25rem;
}

/* ---------- 侧栏 ---------- */
.page-faq .faq-side {
  position: sticky;
  top: 5.5rem;
  align-self: start;
  min-width: 0;
}

.page-faq .faq-side .index-label {
  margin: 0;
  color: var(--ink);
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 0.8rem 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-side__list li {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-side__list a {
  display: block;
  padding: 0.55rem 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 180ms var(--ease), padding-left 180ms var(--ease);
}

.page-faq .faq-side__list a:hover,
.page-faq .faq-side__list a.is-active {
  color: var(--dusk);
  padding-left: 0.4rem;
}

.page-faq .faq-side__tip {
  margin-top: 1.35rem;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  padding: 0.85rem 0.9rem;
  background: var(--deep);
  color: var(--paper-soft);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.75;
}

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

/* ---------- 客服联系块 ---------- */
.page-faq .faq-support {
  padding-bottom: var(--faq-shell-pad);
}

.page-faq .faq-support__card {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: var(--paper-soft);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 4vw, 2.9rem);
}

.page-faq .faq-support__card::after {
  content: "";
  position: absolute;
  right: -4rem;
  top: -4rem;
  width: 15rem;
  height: 15rem;
  background: radial-gradient(circle at 32% 32%, rgba(198, 240, 75, 0.24), transparent 66%);
  pointer-events: none;
}

.page-faq .faq-support__head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.7rem;
}

.page-faq .faq-support__head .index-label {
  margin: 0;
  color: var(--glacier);
}

.page-faq .faq-support__card .section-title {
  color: var(--paper-soft);
  margin: 0;
  position: relative;
}

.page-faq .faq-support__lede {
  max-width: 42rem;
  margin: 0.85rem 0 0;
  line-height: 1.85;
  color: rgba(252, 247, 238, 0.82);
  position: relative;
}

.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.35rem;
  margin-top: 1.9rem;
  position: relative;
}

.page-faq .faq-support__item {
  border-top: 1px solid rgba(252, 247, 238, 0.22);
  padding-top: 0.9rem;
  min-width: 0;
}

.page-faq .faq-support__label {
  margin: 0 0 0.4rem;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--glacier);
}

.page-faq .faq-support__value {
  margin: 0 0 0.9rem;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-soft);
  overflow-wrap: anywhere;
  word-break: break-word;
}

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

.page-faq .btn--copy {
  appearance: none;
  background: transparent;
  border: 1px solid var(--glacier);
  color: var(--glacier);
  border-radius: var(--radius);
  font-family: var(--font-body);
  cursor: pointer;
  transition: background-color 200ms var(--ease), color 200ms var(--ease);
}

.page-faq .btn--copy:hover {
  background: var(--glacier);
  color: var(--deep);
}

.page-faq .faq-support__foot {
  position: relative;
  margin: 1.9rem 0 0;
  padding-top: 1.15rem;
  border-top: 1px solid rgba(252, 247, 238, 0.22);
  font-size: 14px;
  line-height: 1.85;
  color: rgba(252, 247, 238, 0.78);
}

.page-faq .faq-support__foot a {
  color: var(--glacier);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.page-faq .faq-support__foot a:hover {
  color: var(--neon);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-support__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.82fr);
  }

  .page-faq .faq-item__q {
    grid-template-columns: 2.4rem minmax(0, 1fr) 1.1rem;
    gap: 0.85rem;
    padding: 1rem 1.15rem 1rem 1rem;
  }

  .page-faq .faq-item__a {
    padding: 0 1.25rem 1.25rem 3.9rem;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-columns {
    grid-template-columns: minmax(0, 1fr) var(--faq-side-w);
  }
}

@media (max-width: 640px) {
  .page-faq .faq-item__a {
    padding: 0 1rem 1.05rem 1rem;
  }

  .page-faq .faq-hero__art::after {
    inset: 0.5rem -0.5rem -0.5rem 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__arrow,
  .page-faq .filter-btn,
  .page-faq .btn--copy,
  .page-faq .faq-side__list a {
    transition-duration: 0.01ms;
  }
}