.page-faq {
  --faq-sticky-top: 0px;
  --faq-rail: rgba(34, 230, 184, .55);
  --faq-cap: 62ch;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .container {
  padding-inline: var(--gutter);
  margin-inline: auto;
  max-width: var(--shell);
  width: 100%;
}

/* ---------- 面包屑与首屏 ---------- */
.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--fg-muted);
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .breadcrumbs a {
  color: var(--fg-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(24px, 4vw, 44px) clamp(28px, 4.5vw, 50px);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -60px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 230, 184, .16), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero .kicker {
  color: var(--accent);
}

.page-faq .faq-hero h1 {
  margin: .18em 0 .3em;
}

.page-faq .faq-hero .lede {
  max-width: var(--faq-cap);
  color: var(--text-100);
}

.page-faq .faq-hero__hint {
  margin: clamp(18px, 2.5vw, 26px) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--faq-rail);
  font-size: 14px;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: var(--faq-cap);
}

/* ---------- 类别筛选条 ---------- */
.page-faq .faq-toolbar {
  position: relative;
  z-index: 8;
  padding-block: 14px;
  background: linear-gradient(180deg, rgba(7, 12, 24, .97), rgba(7, 12, 24, .84));
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}

.page-faq .faq-toolbar__inner {
  display: flex;
  align-items: center;
}

.page-faq .faq-toolbar .chips {
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
  width: 100%;
}

.page-faq .faq-toolbar .chips::-webkit-scrollbar {
  display: none;
}

.page-faq .chip {
  flex: 0 0 auto;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  cursor: pointer;
}

.page-faq .chip.is-active {
  color: var(--ink-950);
  background: var(--accent);
  border-color: var(--accent);
}

.page-faq .chip__count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 1px 6px;
  border-radius: var(--r-pill);
  background: rgba(91, 103, 128, .28);
  color: inherit;
}

.page-faq .chip.is-active .chip__count {
  background: rgba(7, 12, 24, .26);
  color: var(--ink-950);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-list {
  margin-top: clamp(30px, 5vw, 56px);
  display: flex;
  flex-direction: column;
  gap: clamp(36px, 5.5vw, 68px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--accent);
  flex: 0 0 auto;
}

.page-faq .faq-group__head .section-title {
  margin: 0;
}

.page-faq .faq-group__layout {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
  margin-top: 8px;
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--border-soft);
  border-left: 3px solid transparent;
  transition: border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--accent);
  background: linear-gradient(90deg, rgba(34, 230, 184, .07), rgba(34, 230, 184, 0) 46%);
}

.page-faq .faq-item[hidden] {
  display: none;
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 16px 4px 16px 12px;
  cursor: pointer;
  list-style: none;
  transition: color .18s var(--ease);
}

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

.page-faq .faq-item > summary:hover .faq-q,
.page-faq .faq-item > summary:focus-visible .faq-q {
  color: var(--accent);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.page-faq .faq-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--fg-muted);
  padding-top: 4px;
  transition: color .18s var(--ease);
}

.page-faq .faq-item[open] .faq-no {
  color: var(--accent);
}

.page-faq .faq-q {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--text-100);
  transition: color .18s var(--ease);
}

.page-faq .faq-mark {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  border: 1px solid var(--border);
  border-radius: 50%;
  flex: 0 0 auto;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-mark::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--fg-muted);
  border-bottom: 1.5px solid var(--fg-muted);
  transform: translate(-50%, -70%) rotate(45deg);
  transition: transform .22s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-item[open] .faq-mark {
  border-color: var(--accent);
  background: rgba(34, 230, 184, .12);
}

.page-faq .faq-item[open] .faq-mark::before {
  border-right-color: var(--accent);
  border-bottom-color: var(--accent);
  transform: translate(-50%, -30%) rotate(225deg);
}

.page-faq .faq-a {
  padding: 0 12px 20px 40px;
  color: var(--text-100);
  font-size: .94rem;
  line-height: 1.8;
}

.page-faq .faq-a p {
  margin: 0 0 .55em;
  max-width: var(--faq-cap);
}

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

.page-faq .faq-a a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 230, 184, .45);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--r-md);
  border: 1px solid var(--border-soft);
  background: var(--surface);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--fg-muted);
}

/* ---------- 末尾反馈区块 ---------- */
.page-faq .faq-help {
  position: relative;
  margin-top: clamp(44px, 7vw, 88px);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 130% at 8% 0%, rgba(255, 106, 43, .16), transparent 55%),
    linear-gradient(150deg, var(--ink-900), var(--surface-2) 62%, #12294a);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.page-faq .faq-help__inner {
  display: grid;
  gap: clamp(24px, 4vw, 38px);
  padding: clamp(24px, 4vw, 48px);
}

.page-faq .faq-help .kicker {
  color: var(--accent-2);
}

.page-faq .faq-help .section-title {
  margin: .25em 0 .5em;
}

.page-faq .faq-help__text > p {
  margin: 0 0 20px;
  max-width: var(--faq-cap);
  color: var(--text-100);
  line-height: 1.75;
}

.page-faq .faq-help__contact {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-help__contact li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: .92rem;
  color: var(--timer-white);
}

.page-faq .faq-help__contact span {
  font-family: var(--font-body);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--fg-muted);
  min-width: 72px;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-help__figure img {
  border-color: rgba(91, 103, 128, .3);
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-a {
    padding-left: 54px;
    padding-right: 40px;
  }

  .page-faq .faq-q {
    font-size: 1.06rem;
  }
}

/* ---------- 桌面与吸顶 ---------- */
@media (min-width: 960px) {
  .page-faq {
    --faq-sticky-top: 92px;
  }

  .page-faq .faq-toolbar {
    position: sticky;
    top: var(--faq-sticky-top);
    backdrop-filter: blur(10px);
  }

  .page-faq .faq-group__layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(240px, .75fr);
    align-items: start;
  }

  .page-faq .faq-group__media {
    position: sticky;
    top: calc(var(--faq-sticky-top) + 88px);
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    align-items: center;
  }

  .page-faq .faq-group__head {
    gap: 20px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-item > summary {
    padding: 20px 6px 20px 16px;
  }

  .page-faq .faq-a {
    padding-left: 58px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-mark,
  .page-faq .faq-mark::before,
  .page-faq .faq-q,
  .page-faq .faq-no {
    transition: none;
  }
}
</main>