.page-faq {
  --faq-panel: #14141c;
  --faq-accent-glow: 0 0 18px rgba(255, 45, 120, .22);
  width: 100%;
  overflow-x: hidden;
  padding-bottom: 72px;
}

/* ===== 首屏英雄区 ===== */
.page-faq .page-faq__hero {
  position: relative;
  padding-top: 30px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .page-faq__hero::before {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 240px;
  height: 240px;
  background:
    linear-gradient(135deg, rgba(155, 48, 255, .14) 25%, transparent 25%),
    linear-gradient(225deg, rgba(255, 45, 120, .10) 25%, transparent 25%);
  background-size: 24px 24px;
  transform: rotate(-8deg);
  pointer-events: none;
}

.page-faq .page-faq__hero::after {
  content: ">_";
  position: absolute;
  right: 24px;
  bottom: 4px;
  font-family: var(--font-mono);
  font-size: 56px;
  line-height: 1;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 229, 255, .30);
  pointer-events: none;
}

.page-faq .page-faq__hero .page-hero__title {
  font-family: var(--font-head);
  font-size: 28px;
  line-height: 1.25;
  margin: 6px 0 14px;
  color: var(--text-primary);
  text-shadow: var(--glow-pink);
  max-width: 820px;
}

.page-faq .page-faq__hero .page-hero__desc {
  max-width: 820px;
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .page-faq__hero .page-hero__tag {
  margin-bottom: 6px;
}

/* ===== 主容器与搜索框 ===== */
.page-faq .page-faq__main {
  margin-top: 20px;
}

.page-faq .page-faq__search-box {
  margin-bottom: 18px;
}

.page-faq .page-faq__search-row {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--bg-panel);
  border-left: 3px solid var(--neon-cyan);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0 16px;
  transition: box-shadow .2s, border-left-color .2s;
}

.page-faq .page-faq__search-row:focus-within {
  box-shadow: var(--glow-cyan);
  border-left-color: var(--neon-cyan);
}

.page-faq .page-faq__search-shell {
  color: var(--neon-green);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  margin-right: 12px;
  user-select: none;
}

.page-faq .page-faq__search-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  padding: 13px 0;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 14px;
  outline: none;
}

.page-faq .page-faq__search-input::placeholder {
  color: var(--text-dim);
  opacity: .7;
}

.page-faq .page-faq__search-hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

/* ===== 两栏布局 ===== */
.page-faq .page-faq__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 8px;
}

/* ===== 左侧索引 ===== */
.page-faq .page-faq__index {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--neon-purple);
  padding: 14px;
}

.page-faq .page-faq__index-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}

.page-faq .page-faq__index-code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--neon-cyan);
}

.page-faq .page-faq__index-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  background: var(--bg-panel-2);
  border: 1px solid var(--line);
  padding: 2px 8px;
}

.page-faq .page-faq__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .page-faq__index-list li {
  flex: 0 0 auto;
}

.page-faq .page-faq__index-list a {
  display: flex;
  align-items: center;
  gap: 7px;
  background: var(--bg-panel-2);
  border: 1px solid var(--line);
  padding: 7px 10px;
  color: var(--text-dim);
  font-size: 12px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color .2s, border-color .2s, background .2s;
}

.page-faq .page-faq__index-list a:hover {
  color: var(--neon-pink);
  border-color: var(--neon-purple);
  background: rgba(155, 48, 255, .08);
}

.page-faq .page-faq__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--neon-purple);
  transition: color .2s;
}

.page-faq .page-faq__index-list a:hover .page-faq__idx {
  color: var(--neon-pink);
}

/* ===== 右侧内容与分组 ===== */
.page-faq .page-faq__content {
  min-width: 0;
}

.page-faq .page-faq__group {
  margin-bottom: 40px;
}

.page-faq .page-faq__group-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 20px;
  letter-spacing: .03em;
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--neon-pink);
  color: var(--text-primary);
}

.page-faq .page-faq__group-no {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--neon-green);
}

/* ===== 手风琴条目 ===== */
.page-faq .page-faq__item {
  margin-bottom: 12px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-left: 3px solid transparent;
  transition: border-color .2s, background .2s, box-shadow .2s;
  scroll-margin-top: 20px;
}

.page-faq .page-faq__item[open] {
  border-left-color: var(--neon-pink);
  background: var(--bg-panel-2);
  box-shadow: var(--faq-accent-glow);
}

.page-faq .page-faq__item summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 14px;
  cursor: pointer;
  list-style: none;
  transition: background .2s;
  user-select: none;
}

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

.page-faq .page-faq__item summary:hover {
  background: rgba(255, 45, 120, .06);
}

.page-faq .page-faq__prompt {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--neon-green);
  font-size: 14px;
  line-height: 1.5;
  flex-shrink: 0;
  text-shadow: 0 0 8px rgba(0, 255, 157, .35);
}

.page-faq .page-faq__q {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.5;
}

.page-faq .page-faq__toggler {
  font-family: var(--font-mono);
  color: var(--neon-purple);
  font-size: 18px;
  line-height: 1.2;
  flex-shrink: 0;
  transition: transform .25s, color .25s;
}

.page-faq .page-faq__item[open] .page-faq__toggler {
  transform: rotate(45deg);
  color: var(--neon-pink);
}

/* ===== 答案区（代码块样式） ===== */
.page-faq .page-faq__a {
  border-top: 1px dashed var(--line);
  padding: 16px;
  margin: 0 14px 14px;
  background: var(--bg-deep);
  border-left: 3px solid var(--neon-purple);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-primary);
}

.page-faq .page-faq__a p {
  margin: 0 0 12px;
}

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

.page-faq .page-faq__a strong {
  color: var(--neon-cyan);
  font-weight: 400;
  text-shadow: 0 0 10px rgba(0, 229, 255, .25);
}

.page-faq .page-faq__a em {
  color: var(--neon-pink);
  font-style: normal;
}

.page-faq .page-faq__a a {
  color: var(--neon-pink);
  text-decoration: none;
  border-bottom: 1px dotted var(--neon-pink);
  transition: border-bottom-style .2s;
}

.page-faq .page-faq__a a:hover {
  border-bottom-style: solid;
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
}

/* ===== 插图 ===== */
.page-faq .page-faq__figure {
  margin: 16px 0 0;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--bg-panel);
}

.page-faq .page-faq__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .page-faq__figcaption {
  padding: 8px 12px;
  font-size: 11px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  border-top: 1px solid var(--line);
  letter-spacing: .04em;
}

/* ===== 尾部帮助块 ===== */
.page-faq .page-faq__tail {
  margin-top: 8px;
}

.page-faq .page-faq__tail-box {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--neon-cyan);
  padding: 20px;
  overflow: hidden;
}

.page-faq .page-faq__tail-box::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-pink), var(--neon-purple), transparent);
  opacity: .7;
}

.page-faq .page-faq__tail-prompt {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--neon-green);
}

.page-faq .page-faq__tail-title {
  font-family: var(--font-head);
  font-size: 18px;
  margin: 0 0 8px;
  color: var(--text-primary);
  letter-spacing: .04em;
}

.page-faq .page-faq__tail-text {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .page-faq__tail-text a {
  color: var(--neon-pink);
  text-decoration: none;
  border-bottom: 1px dotted var(--neon-pink);
  transition: color .2s, border-bottom-color .2s;
}

.page-faq .page-faq__tail-text a:hover {
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
}

/* ===== 筛选隐藏态 ===== */
.page-faq .page-faq__item.is-filtered {
  display: none;
}

/* ===== 平板以上 ===== */
@media (min-width: 640px) {
  .page-faq .page-faq__hero {
    padding-top: 36px;
    padding-bottom: 34px;
  }

  .page-faq .page-faq__hero .page-hero__title {
    font-size: 32px;
  }

  .page-faq .page-faq__hero .page-hero__desc {
    font-size: 15px;
  }

  .page-faq .page-faq__search-row {
    padding: 0 18px;
  }

  .page-faq .page-faq__search-input {
    padding: 14px 0;
    font-size: 15px;
  }

  .page-faq .page-faq__a {
    padding: 20px;
    font-size: 14px;
  }

  .page-faq .page-faq__item summary {
    padding: 16px 18px;
  }

  .page-faq .page-faq__a {
    margin-left: 18px;
    margin-right: 18px;
  }
}

/* ===== 桌面端 ===== */
@media (min-width: 768px) {
  .page-faq .page-faq__hero {
    padding-top: 44px;
    padding-bottom: 40px;
  }

  .page-faq .page-faq__hero .page-hero__title {
    font-size: 38px;
  }

  .page-faq .page-faq__layout {
    grid-template-columns: 260px 1fr;
    gap: 32px;
    align-items: start;
  }

  .page-faq .page-faq__index {
    position: sticky;
    top: 72px;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
    padding: 16px;
  }

  .page-faq .page-faq__index-list {
    flex-direction: column;
    gap: 4px;
    overflow-x: visible;
  }

  .page-faq .page-faq__index-list li {
    flex: none;
  }

  .page-faq .page-faq__index-list a {
    width: 100%;
    white-space: normal;
    font-size: 13px;
    padding: 8px 10px;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
  }

  .page-faq .page-faq__index-list a:hover {
    border-left-color: var(--neon-pink);
    background: rgba(255, 45, 120, .05);
  }

  .page-faq .page-faq__group-title {
    font-size: 22px;
  }

  .page-faq .page-faq__q {
    font-size: 15px;
  }

  .page-faq .page-faq__tail-box {
    padding: 28px 32px;
  }

  .page-faq .page-faq__tail-title {
    font-size: 22px;
  }
}