/* ===== 答疑中心 · 页面专属样式（作用域 .page-faq） ===== */
.page-faq {
  --faq-side-w: 264px;
  --faq-gap: 20px;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 24px;
  margin: 18px 0 26px;
}

.page-faq .faq-hero__title {
  margin: 10px 0 14px;
  font-size: clamp(1.85rem, 6.2vw, 3.15rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__chips li {
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.01em;
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel-2);
}

.page-faq .faq-hero__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 速览数据条 ---------- */
.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 34px;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.page-faq .faq-stats__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--panel-2);
}

.page-faq .faq-stats__num {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  letter-spacing: 0.02em;
}

.page-faq .faq-stats__label {
  font-size: 0.8125rem;
  color: var(--ink-2);
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

/* ---------- 左侧分类导航 ---------- */
.page-faq .faq-side__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.page-faq .faq-cats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.page-faq .faq-cats__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-left: 3px solid transparent;
  border-radius: var(--radius);
  background: var(--panel-2);
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-cats__item:hover,
.page-faq .faq-cats__item:focus-visible {
  border-color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--panel);
  color: var(--ink);
}

.page-faq .faq-cats__num {
  font-size: 0.8125rem;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-faq .faq-cats__name {
  font-weight: 600;
  color: inherit;
}

.page-faq .faq-cats__count {
  font-size: 0.75rem;
  color: var(--ink-2);
}

.page-faq .faq-side__hint {
  margin-top: 14px;
  padding: 14px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
}

.page-faq .faq-side__hint p {
  margin: 0 0 10px;
  font-size: 0.875rem;
  color: var(--ink-2);
}

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

/* ---------- 问题分组 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: 44px;
  scroll-margin-top: calc(var(--status-h) + 24px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  font-size: 0.8125rem;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--ink-2);
}

.page-faq .faq-group__media {
  margin: 0 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel-2);
}

.page-faq .faq-group__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .qa:hover {
  border-color: #33465e;
}

.page-faq .qa[open] {
  background: var(--panel);
  border-color: #2f4258;
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

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

.page-faq .qa__plus {
  position: relative;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.page-faq .qa__plus::before,
.page-faq .qa__plus::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  top: 50%;
  height: 2px;
  margin-top: -1px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-faq .qa__plus::after {
  transform: rotate(90deg);
  transition: transform 0.24s var(--ease), opacity 0.24s var(--ease);
}

.page-faq .qa[open] .qa__plus::after {
  transform: rotate(0deg);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 16px 16px 46px;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--ink-2);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  max-width: 68ch;
}

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

.page-faq .qa__a a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 107, 255, 0.45);
}

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

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-size: 0.9em;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--orange);
}

/* ---------- 类目收束提示条 ---------- */
.page-faq .faq-group__next {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin: 16px 0 0;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  background: linear-gradient(90deg, rgba(35, 224, 200, 0.07), rgba(35, 224, 200, 0) 62%);
  font-size: 0.875rem;
  color: var(--ink-2);
}

.page-faq .faq-group__next a {
  color: var(--cyan);
  font-weight: 600;
  text-decoration: none;
}

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

/* ---------- 底部通道 ---------- */
.page-faq .faq-cta {
  margin-top: 8px;
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(46, 107, 255, 0.16), rgba(46, 107, 255, 0) 58%),
    radial-gradient(110% 130% at 100% 100%, rgba(255, 122, 26, 0.12), rgba(255, 122, 26, 0) 60%),
    var(--panel-2);
}

.page-faq .faq-cta__title {
  margin: 8px 0 10px;
  font-size: clamp(1.25rem, 3.4vw, 1.75rem);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-cta__text {
  margin: 0 0 20px;
  max-width: 66ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 520px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 44px;
    align-items: center;
  }

  .page-faq .faq-stats__num {
    font-size: 2rem;
  }

  .page-faq .qa__q {
    font-size: 1.0625rem;
    padding: 16px 20px;
  }

  .page-faq .qa__a {
    padding: 0 20px 18px 50px;
  }

  .page-faq .faq-cta {
    padding: 32px 30px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-side-w) minmax(0, 1fr);
    gap: 40px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--status-h) + 20px);
  }

  .page-faq .faq-cats {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-group {
    margin-bottom: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__plus::after,
  .page-faq .qa,
  .page-faq .faq-cats__item {
    transition: none;
  }
}