.page-faq {
  background: var(--phx-obsidian);
  color: var(--phx-ink);
  padding-bottom: 24px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding: 8px 0 40px;
}

.page-faq .faq-hero__frame {
  position: relative;
  padding: 36px 22px 30px;
  border: 1px solid var(--phx-mineral);
  border-radius: var(--phx-radius);
  background:
    radial-gradient(120% 140% at 8% 0%, rgba(255, 107, 31, 0.14), transparent 52%),
    linear-gradient(180deg, var(--phx-rock), var(--phx-obsidian));
}

.page-faq .faq-hero__frame::before,
.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border: 1px solid var(--phx-flame);
  pointer-events: none;
}

.page-faq .faq-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
  border-top-left-radius: var(--phx-radius);
}

.page-faq .faq-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-left: 0;
  border-top: 0;
  border-bottom-right-radius: var(--phx-radius);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin: 32px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--phx-mineral);
}

.page-faq .faq-stat dt {
  font-family: var(--phx-font-display);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--phx-steel);
}

.page-faq .faq-stat dd {
  margin: 6px 0 0;
  font-family: var(--phx-font-mono);
  font-size: 17px;
  color: var(--phx-cream);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-stat dd .phx-num {
  color: var(--phx-flame);
}

/* ---------- 分类胶囊 ---------- */
.page-faq .faq-cats {
  border-top: 1px solid var(--phx-mineral);
  border-bottom: 1px solid var(--phx-mineral);
  background: rgba(20, 23, 29, 0.72);
}

.page-faq .faq-cats__inner {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-top: 14px;
  padding-bottom: 14px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-cat {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--phx-mineral);
  border-radius: 999px;
  background: var(--phx-obsidian);
  color: var(--phx-ink);
  font-family: var(--phx-font-display);
  font-size: 14px;
  letter-spacing: 0.03em;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s var(--phx-ease), color 0.2s var(--phx-ease), background 0.2s var(--phx-ease);
}

.page-faq .faq-cat__no {
  font-family: var(--phx-font-mono);
  font-size: 12px;
  color: var(--phx-flame);
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  border-color: var(--phx-flame);
  background: var(--phx-rock);
  color: var(--phx-cream);
  outline: none;
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  padding-top: 40px;
  padding-bottom: 64px;
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--phx-header-h) + 24px);
}

.page-faq .faq-group + .faq-group {
  margin-top: 56px;
  padding-top: 56px;
  border-top: 1px solid var(--phx-mineral);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding-bottom: 20px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--phx-mineral);
}

.page-faq .faq-group__no {
  font-size: 26px;
  line-height: 1;
  padding-top: 8px;
  color: var(--phx-flame);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__head .phx-h2 {
  margin: 0;
}

.page-faq .faq-group__lede {
  margin: 10px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.7;
  color: var(--phx-steel);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--phx-mineral);
  border-radius: var(--phx-radius);
  background: var(--phx-rock);
  transition: border-color 0.2s var(--phx-ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(255, 107, 31, 0.42);
  background: linear-gradient(180deg, rgba(255, 107, 31, 0.06), transparent 70%), var(--phx-rock);
}

.page-faq .faq-item > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 17px 46px 17px 44px;
  border-radius: var(--phx-radius);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary h3 {
  margin: 0;
  font-family: var(--phx-font-display);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--phx-cream);
}

.page-faq .faq-item > summary::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 24px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--phx-mineral);
  transition: background 0.24s var(--phx-ease), box-shadow 0.24s var(--phx-ease);
}

.page-faq .faq-item[open] > summary::before {
  background: var(--phx-flame);
  box-shadow: 0 0 12px rgba(255, 107, 31, 0.65);
}

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--phx-font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--phx-steel);
  transition: color 0.2s var(--phx-ease);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
  color: var(--phx-flame);
}

.page-faq .faq-item > summary:hover h3,
.page-faq .faq-item > summary:focus-visible h3 {
  color: #FFFFFF;
}

.page-faq .faq-item > summary:focus-visible {
  outline: 1px solid var(--phx-flame);
  outline-offset: 2px;
}

.page-faq .faq-item__body {
  padding: 0 22px 20px 44px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--phx-ink);
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 34em;
}

.page-faq .faq-item__body a {
  color: var(--phx-flame-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__body a:hover {
  color: var(--phx-cream);
}

/* ---------- 步骤编号 ---------- */
.page-faq .faq-steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  max-width: 34em;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 36px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--phx-steel);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--phx-font-mono);
  font-size: 12px;
  color: var(--phx-clay);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 20px;
  border: 1px solid var(--phx-mineral);
  border-radius: var(--phx-radius);
  overflow: hidden;
  background: var(--phx-obsidian);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: brightness(0.86) saturate(0.92);
}

.page-faq .faq-figure figcaption {
  padding: 11px 18px;
  border-top: 1px solid var(--phx-mineral);
  font-size: 13px;
  line-height: 1.6;
  color: var(--phx-steel);
}

/* ---------- 侧栏 ---------- */
.page-faq .faq-side {
  display: grid;
  gap: 16px;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-side__card {
  border: 1px solid var(--phx-mineral);
  border-radius: var(--phx-radius);
  background: var(--phx-rock);
  padding: 20px 20px 14px;
}

.page-faq .faq-side__title {
  margin: 0 0 12px;
  font-family: var(--phx-font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--phx-steel);
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-side__list li + li a {
  border-top: 1px solid var(--phx-mineral);
}

.page-faq .faq-side__list a {
  display: block;
  padding: 13px 0;
  text-decoration: none;
  color: var(--phx-cream);
  transition: color 0.2s var(--phx-ease);
}

.page-faq .faq-side__list span {
  display: block;
  font-family: var(--phx-font-display);
  font-size: 15px;
  letter-spacing: 0.02em;
}

.page-faq .faq-side__list em {
  display: block;
  margin-top: 5px;
  font-style: normal;
  font-size: 13px;
  line-height: 1.6;
  color: var(--phx-steel);
}

.page-faq .faq-side__list a:hover span,
.page-faq .faq-side__list a:focus-visible span {
  color: var(--phx-flame);
}

.page-faq .faq-side__list a:focus-visible {
  outline: 1px solid var(--phx-flame);
  outline-offset: 2px;
}

.page-faq .faq-side__card--flame {
  padding: 22px 20px 20px;
  background:
    linear-gradient(155deg, rgba(194, 38, 27, 0.28), rgba(255, 107, 31, 0.12) 62%, transparent),
    var(--phx-rock);
  border-color: rgba(255, 107, 31, 0.42);
}

.page-faq .faq-side__kicker {
  margin: 0;
  font-family: var(--phx-font-display);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--phx-flame-soft);
}

.page-faq .faq-side__note {
  margin: 10px 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--phx-ink);
}

.page-faq .faq-side__mail {
  margin: 0;
  font-size: 13.5px;
  word-break: break-all;
}

.page-faq .faq-side__mail a {
  color: var(--phx-cream);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-side__tel {
  margin: 8px 0 0;
  font-family: var(--phx-font-mono);
  font-size: 16px;
  color: var(--phx-cream);
  font-variant-numeric: tabular-nums;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 16px 0 52px;
  }

  .page-faq .faq-hero__frame {
    padding: 52px 48px 44px;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-faq .faq-stat + .faq-stat {
    padding-left: 24px;
    border-left: 1px solid var(--phx-mineral);
  }

  .page-faq .faq-item > summary {
    padding: 19px 52px 19px 46px;
  }

  .page-faq .faq-item__body {
    padding: 0 30px 22px 46px;
  }

  .page-faq .faq-group__no {
    font-size: 30px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-grid {
    grid-template-columns: minmax(0, 1fr) 336px;
    gap: 56px;
    padding-top: 56px;
    padding-bottom: 88px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--phx-header-h) + 28px);
    align-self: start;
  }

  .page-faq .faq-figure--contact {
    max-width: 640px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-grid {
    grid-template-columns: minmax(0, 1fr) 360px;
  }

  .page-faq .faq-hero__frame {
    padding: 60px 64px 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-cat,
  .page-faq .faq-side__list a,
  .page-faq .faq-item > summary::before,
  .page-faq .faq-item > summary::after {
    transition: none;
  }
}