.page-faq {
  --faq-text: rgba(244, 247, 250, .76);
  --faq-text-strong: var(--white);
  padding: 0 0 76px;
}

/* ---------- 页头 ---------- */
.page-faq .faq-hero {
  padding: 26px 0 30px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__kicker {
  display: inline-block;
  font-family: var(--font-cond);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--blue);
  border: 1px solid rgba(33, 182, 232, .42);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 18px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 28px;
  line-height: 1.22;
  letter-spacing: -.02em;
  color: var(--white);
  max-width: 22ch;
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  margin-top: 18px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-text);
}

/* ---------- 左右分屏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--ink-2);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-cond);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 8px 8px 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--grey);
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--white);
  border-left-color: var(--blue);
  background: rgba(33, 182, 232, .09);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--blue);
  letter-spacing: -.02em;
}

.page-faq .faq-index__note {
  margin-top: 16px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-index__note p {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 右侧问答面板 ---------- */
.page-faq .faq-panel {
  min-width: 0;
}

.page-faq .faq-group {
  padding: 26px 0 30px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-group h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-group > p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-text);
}

.page-faq .faq-group a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-group a:hover {
  color: var(--cyan);
}

/* ---------- 三步自查 ---------- */
.page-faq .steps {
  list-style: none;
  counter-reset: faq-step;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .steps > li {
  position: relative;
  counter-increment: faq-step;
  padding: 16px 16px 16px 58px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--ink-2);
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-text);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-faq .steps > li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.05em;
  color: var(--cyan);
}

.page-faq .steps > li:hover {
  border-color: rgba(75, 240, 208, .42);
  transform: translateY(-2px);
}

.page-faq .steps > li b {
  color: var(--faq-text-strong);
  font-weight: 700;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--ink-2);
  overflow: hidden;
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--white);
  transition: background-color .18s var(--ease);
}

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

.page-faq .qa summary::before {
  content: "+";
  flex: 0 0 auto;
  width: 18px;
  margin-top: 1px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.4;
  color: var(--blue);
  transition: color .2s var(--ease);
}

.page-faq .qa[open] summary::before {
  content: "−";
  color: var(--cyan);
}

.page-faq .qa summary:hover {
  background: rgba(33, 182, 232, .08);
}

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

.page-faq .qa[open] summary {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa__body {
  padding: 14px 16px 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--faq-text);
}

.page-faq .qa__body p {
  margin: 0 0 10px;
}

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

/* ---------- 口径与反馈清单 ---------- */
.page-faq .rule-list {
  list-style: none;
  margin: 16px 0 18px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .rule-list > li {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-text);
}

.page-faq .rule-list > li b {
  color: var(--faq-text-strong);
  font-weight: 700;
}

.page-faq .rule__dot {
  width: 10px;
  height: 10px;
  margin-top: 8px;
  border-radius: 3px;
}

.page-faq .rule__dot--yellow {
  background: var(--yellow);
}

.page-faq .rule__dot--red {
  background: var(--red);
}

.page-faq .rule__dot--blue {
  background: var(--blue);
}

.page-faq .rule__dot--corner {
  background: linear-gradient(135deg, var(--corner-low), var(--corner-high));
}

/* ---------- 引用格式 ---------- */
.page-faq .cite-block {
  margin: 12px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--blue);
  border-radius: 0 10px 10px 0;
  background: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--white);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--ink-2);
  box-shadow: var(--shadow-card);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--grey);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 34px 0 36px;
    margin-bottom: 38px;
  }

  .page-faq .faq-hero h1 {
    font-size: 40px;
  }

  .page-faq .faq-hero__lead {
    font-size: 16px;
  }

  .page-faq .faq-group {
    padding: 30px 0 34px;
  }

  .page-faq .faq-group h2 {
    font-size: 25px;
  }

  .page-faq .steps > li {
    padding: 18px 20px 18px 72px;
  }

  .page-faq .steps > li::before {
    left: 22px;
    top: 16px;
    font-size: 22px;
  }

  .page-faq .qa summary {
    padding: 16px 20px;
  }

  .page-faq .qa__body {
    padding: 16px 20px 20px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 60px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    padding: 22px 20px;
  }

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

  .page-faq .faq-index__link {
    font-size: 14px;
  }

  .page-faq .faq-group:first-child {
    padding-top: 4px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero h1 {
    font-size: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .steps > li,
  .page-faq .qa summary,
  .page-faq .qa summary::before,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .steps > li:hover {
    transform: none;
  }
}