.page-faq {
  --faq-gap: clamp(28px, 4vw, 56px);
  --faq-note-bg: rgba(62, 110, 142, 0.07);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(26px, 4.6vw, 52px) 0 clamp(30px, 5vw, 60px);
}

.page-faq .faq-hero__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(18px, 3vw, 32px);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(31px, 7vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--clay);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--rule);
}

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-stat__num {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 30px;
  line-height: 1;
  color: var(--clay);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-stat__label {
  font-size: 13px;
  color: var(--moss);
}

.page-faq .faq-hero__shot {
  margin: 0;
}

.page-faq .faq-hero__shot .media {
  border: 1px solid var(--rule-strong);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-hero__shot .media__caption {
  margin-top: 10px;
}

/* ---------- 正文骨架 ---------- */
.page-faq .faq-body {
  padding: clamp(8px, 2vw, 18px) 0 clamp(48px, 7vw, 88px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .faq-toc {
  display: none;
}

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

/* ---------- 现象目录 ---------- */
.page-faq .faq-toc__title {
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule-strong);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--moss);
}

.page-faq .faq-toc__group {
  margin-bottom: 20px;
}

.page-faq .faq-toc__label {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 13px;
  color: var(--clay);
}

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

.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 6px;
  padding: 6px 8px 6px 9px;
  border-left: 3px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  transition: border-color var(--t) var(--ease), background-color var(--t) var(--ease), color var(--t) var(--ease);
}

.page-faq .faq-toc__link:hover {
  border-left-color: var(--clay);
  background-color: var(--clay-soft);
  color: var(--clay);
}

.page-faq .faq-toc__link:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

/* ---------- 分组与排查块 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 56px);
}

.page-faq .faq-group__label {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--clay);
}

.page-faq .faq-group__label::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background-color: var(--rule-strong);
}

.page-faq .faq-block {
  padding: clamp(22px, 3.4vw, 36px) 0;
  border-top: 1px solid var(--rule);
  scroll-margin-top: 110px;
}

.page-faq .faq-group__label + .faq-block {
  border-top: 0;
  padding-top: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 10px;
}

.page-faq .faq-block__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.22;
  color: var(--ink);
}

.page-faq .faq-block__intro {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--moss);
}

/* ---------- 排查步骤 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 11px 14px 11px 11px;
  border-top: 1px solid var(--rule);
  border-left: 3px solid transparent;
  transition: border-color var(--t) var(--ease), background-color var(--t) var(--ease);
}

.page-faq .faq-step:last-child {
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-step:hover {
  border-left-color: var(--clay);
  background-color: var(--clay-soft);
}

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.9;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--ink);
}

.page-faq .faq-step__text a,
.page-faq .faq-block__intro a {
  color: var(--sky);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* ---------- 提示条 ---------- */
.page-faq .faq-note {
  margin: 20px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--sky);
  background-color: var(--faq-note-bg);
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

/* ---------- 浅陶土分区 ---------- */
.page-faq .faq-block--sand {
  margin: clamp(14px, 2vw, 22px) 0;
  padding: clamp(20px, 3vw, 32px);
  background-color: var(--sand);
  border-top: 0;
  border-bottom: 0;
}

.page-faq .faq-block--sand .faq-block__intro {
  color: var(--ink);
}

.page-faq .faq-figure {
  margin: 22px 0 0;
}

.page-faq .faq-figure .media {
  border: 1px solid var(--rule-strong);
  background-color: var(--paper-raise);
}

.page-faq .faq-figure .media__caption {
  margin-top: 10px;
  color: var(--moss);
}

/* ---------- 反馈信息卡 ---------- */
.page-faq .faq-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.page-faq .faq-card {
  padding: 18px 20px;
  border: 1px solid var(--rule-strong);
  background-color: var(--paper-raise);
  box-shadow: var(--shadow-1);
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-faq .faq-card:hover {
  border-color: var(--clay);
  transform: translateY(-2px);
}

.page-faq .faq-card__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.3;
  color: var(--clay);
}

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

.page-faq .faq-card__list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-card__list li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: 1px;
  background-color: var(--clay);
}

.page-faq .faq-card__list strong {
  font-weight: 600;
  color: var(--clay);
}

.page-faq .faq-block__cta {
  margin: 22px 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 64px);
    align-items: end;
  }

  .page-faq .faq-hero__shot {
    transform: translateY(-10px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(188px, 232px) minmax(0, 1fr);
    gap: 64px;
  }

  .page-faq .faq-toc {
    display: block;
    position: sticky;
    top: 104px;
    align-self: start;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-toc__link,
  .page-faq .faq-card {
    transition: none;
  }

  .page-faq .faq-card:hover {
    transform: none;
  }

  .page-faq .faq-hero__shot {
    transform: none;
  }
}