.page-faq {
  --faq-dot: 40px;
  --faq-gap: clamp(36px, 6vw, 72px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(28px, 4vw, 56px);
  padding-bottom: clamp(52px, 7vw, 96px);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 60px);
  align-items: center;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(34px, 5.4vw, 64px);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--c-deep);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--c-slate);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  font-size: 15px;
  color: var(--c-slate);
}

.page-faq .faq-facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-facts__num {
  font-family: var(--font-index);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-sea);
}

.page-faq .faq-hero__visual {
  position: relative;
  min-height: clamp(196px, 46vw, 264px);
}

.page-faq .faq-sheet {
  position: absolute;
  display: block;
  border-radius: 16px;
}

.page-faq .faq-sheet--back {
  left: 4%;
  top: 6%;
  width: 74%;
  height: 78%;
  background: var(--c-wave);
  transform: rotate(-5deg);
}

.page-faq .faq-sheet--front {
  left: 16%;
  top: 14%;
  width: 76%;
  height: 80%;
  padding: clamp(18px, 3vw, 30px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  box-shadow: 0 26px 52px -34px rgba(10, 39, 51, 0.5);
  transform: rotate(3deg);
}

.page-faq .faq-sheet--front i {
  display: block;
  height: 6px;
  border-radius: 999px;
  background: var(--c-wave);
}

.page-faq .faq-sheet--front i:nth-child(2) {
  width: 72%;
}

.page-faq .faq-sheet--front i:nth-child(3) {
  width: 44%;
  background: var(--c-coral);
  opacity: 0.5;
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-index {
  padding-top: 18px;
  border-top: 2px solid var(--c-deep);
}

.page-faq .faq-index__kicker {
  margin: 0 0 6px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-slate);
}

.page-faq .faq-index__title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--c-deep);
}

.page-faq .faq-index__list {
  list-style: none;
  counter-reset: idx;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  align-items: baseline;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-deep);
  text-decoration: none;
  transition: background-color 0.18s var(--ease), transform 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-index__link::before {
  counter-increment: idx;
  content: counter(idx, decimal-leading-zero);
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-sea);
}

.page-faq .faq-index__link:hover {
  background: var(--c-wave);
  color: var(--c-sea-deep);
  transform: translateX(4px);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--c-coral);
  outline-offset: 2px;
}

/* ---------- 说明块 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(56px, 7vw, 92px);
  min-width: 0;
}

.page-faq .faq-block {
  scroll-margin-top: clamp(24px, 9vh, 96px);
  min-width: 0;
}

.page-faq .faq-block--tinted {
  padding: clamp(26px, 4vw, 44px);
  border-radius: var(--radius-soft);
  background: var(--c-wave);
}

.page-faq .faq-block__num {
  margin: 0 0 6px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-sea);
  transition: color 0.18s var(--ease);
}

.page-faq .faq-block:target .faq-block__num {
  color: var(--c-coral);
}

.page-faq .faq-block__title {
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-line);
  font-family: var(--font-head);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--c-deep);
}

.page-faq .faq-block__lead {
  margin: 0 0 4px;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-deep);
}

.page-faq .faq-block__tail {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-slate);
}

.page-faq .faq-block__tail a {
  color: var(--c-sea-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-block__tail a:hover {
  color: var(--c-coral-deep);
}

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: step;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.page-faq .faq-step {
  counter-increment: step;
  display: grid;
  grid-template-columns: var(--faq-dot) 1fr;
  gap: 16px;
  align-items: start;
}

.page-faq .faq-step__mark {
  position: relative;
  width: var(--faq-dot);
  height: var(--faq-dot);
  border-radius: 50%;
  border: 1.5px solid var(--c-sea);
  background: var(--c-paper);
  display: grid;
  place-items: center;
  font-family: var(--font-index);
  font-size: 13px;
  color: var(--c-sea);
}

.page-faq .faq-step__mark::before {
  content: counter(step, decimal-leading-zero);
}

.page-faq .faq-step__mark::after {
  content: "";
  position: absolute;
  right: -3px;
  bottom: -3px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--c-coral);
}

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

.page-faq .faq-step__title {
  margin: 6px 0 6px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--c-deep);
}

.page-faq .faq-step__body p {
  margin: 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-deep);
}

/* ---------- 标签释义 ---------- */
.page-faq .faq-tags {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-tags > li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--c-line-strong);
}

.page-faq .faq-tags > li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-tags > li p {
  flex: 1 1 240px;
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-slate);
}

/* ---------- 读法条目 ---------- */
.page-faq .faq-rules {
  margin-top: 24px;
}

.page-faq .faq-rule {
  padding-top: 18px;
  border-top: 1px solid var(--c-line-sea);
}

.page-faq .faq-rule__index {
  margin: 0 0 8px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-sea);
}

.page-faq .faq-rule p + p,
.page-faq .faq-rule__index + p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-deep);
}

/* ---------- 对照回退清单 ---------- */
.page-faq .faq-checks {
  list-style: none;
  counter-reset: chk;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-checks li {
  position: relative;
  padding-left: 30px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-deep);
}

.page-faq .faq-checks li::before {
  counter-increment: chk;
  content: counter(chk);
  position: absolute;
  left: 0;
  top: 5px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--c-sea);
  color: var(--c-paper);
  font-family: var(--font-index);
  font-size: 11px;
  line-height: 1;
  display: grid;
  place-items: center;
}

.page-faq .faq-note {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-slate);
}

/* ---------- 误区 ---------- */
.page-faq .faq-myths {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-myth {
  padding: 18px 22px;
  border-left: 3px solid var(--c-brick);
  border-radius: 0 12px 12px 0;
  background: rgba(193, 84, 63, 0.07);
}

.page-faq .faq-myth__label {
  margin: 0 0 6px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-brick);
}

.page-faq .faq-myth__wrong {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-deep);
}

.page-faq .faq-myth__fix {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-slate);
}

/* ---------- 提交前准备 ---------- */
.page-faq .faq-prepare {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-prepare li {
  position: relative;
  padding-left: 26px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-deep);
}

.page-faq .faq-prepare li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--c-coral);
  transform: rotate(45deg);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 30px 0 0;
  max-width: 100%;
}

.page-faq .faq-figure .media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-soft);
  aspect-ratio: 3 / 2;
}

.page-faq .faq-figure--square .media {
  aspect-ratio: 1 / 1;
}

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

/* ---------- 补充问答 ---------- */
.page-faq .faq-extra__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--c-deep);
}

.page-faq .faq-folds {
  margin-top: 26px;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-fold {
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-fold > summary {
  position: relative;
  padding: 18px 40px 18px 0;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-deep);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-fold > summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-index);
  font-size: 18px;
  color: var(--c-sea);
  transition: transform 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-fold[open] > summary::after {
  content: "−";
  color: var(--c-coral);
}

.page-faq .faq-fold > summary:hover {
  color: var(--c-sea-deep);
}

.page-faq .faq-fold > summary:focus-visible {
  outline: 2px solid var(--c-coral);
  outline-offset: 2px;
  border-radius: 6px;
}

.page-faq .faq-fold p {
  margin: 0 0 22px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-deep);
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: clamp(24px, 7vh, 76px);
  }

  .page-faq .faq-block--tinted {
    margin-inline: calc(-1 * clamp(14px, 2vw, 30px));
  }
}

@media (max-width: 560px) {
  .page-faq .faq-tags > li {
    display: block;
  }

  .page-faq .faq-tags > li p {
    margin-top: 10px;
  }

  .page-faq .faq-step {
    grid-template-columns: 34px 1fr;
    gap: 12px;
  }

  .page-faq .faq-step__mark {
    width: 34px;
    height: 34px;
    font-size: 12px;
  }

  .page-faq .faq-sheet--front {
    left: 10%;
    width: 82%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-fold > summary::after,
  .page-faq .faq-block__num {
    transition: none;
  }

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