.page-faq {
  --faq-step-gap: clamp(14px, 2.5vw, 20px);
}

/* ---------- 面包屑与首屏声明 ---------- */
.page-faq .faq-crumbs {
  padding-block: clamp(14px, 3vw, 22px) 0;
}

.page-faq .faq-hero {
  padding-block: clamp(18px, 4vw, 34px) clamp(24px, 4vw, 40px);
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-cond);
  font-size: clamp(30px, 7.4vw, 66px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: clamp(16px, 2.5vw, 22px) 0 0;
  max-width: 64ch;
  color: var(--body-ink);
  line-height: 1.78;
  font-size: clamp(15px, 2.4vw, 17px);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-hero__meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ---------- 主体：索引 + 问答流 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  padding-block: clamp(28px, 5vw, 54px);
}

.page-faq .faq-toc {
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 16px 14px;
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-height: 44px;
  padding: 11px 12px;
  color: var(--muted);
  text-decoration: none;
  border-left: 3px solid transparent;
  font-size: 15px;
  line-height: 1.4;
  transition: color .2s var(--ease-out), border-color .2s var(--ease-out), background-color .2s var(--ease-out);
}

.page-faq .faq-toc__num {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--ink);
  border-left-color: var(--cyan);
  background: rgba(47, 243, 224, .07);
}

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

.page-faq .faq-group {
  scroll-margin-top: 88px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 6vw, 64px);
}

.page-faq .faq-group__head {
  padding-bottom: 14px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-group h2 {
  margin: 8px 0 0;
  font-size: clamp(20px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-faq .faq-group:target .faq-group__head {
  border-bottom-color: var(--cyan);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border: 2px solid var(--line);
  background: var(--panel);
  margin-bottom: 12px;
}

.page-faq .qa[open] {
  border-color: var(--cyan);
  box-shadow: inset 4px 0 0 0 var(--orange);
}

.page-faq .qa summary {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  min-height: 44px;
  padding: 16px 16px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: clamp(15px, 2.5vw, 17px);
  line-height: 1.52;
  color: var(--ink);
  transition: color .2s var(--ease-out);
}

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

.page-faq .qa summary::marker {
  content: "";
}

.page-faq .qa summary:hover {
  color: var(--cyan);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -4px;
}

.page-faq .qa__mark {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .22s var(--ease-out), opacity .22s var(--ease-out);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .qa__mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__body {
  padding: 0 16px 16px 16px;
  color: var(--body-ink);
  line-height: 1.78;
  font-size: clamp(14px, 2.3vw, 16px);
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 66ch;
}

/* ---------- 反馈三步 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: var(--faq-step-gap);
  margin-bottom: clamp(20px, 3vw, 28px);
}

.page-faq .step {
  position: relative;
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 20px 18px 18px;
}

.page-faq .step__num {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 14px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  color: var(--cyan);
  font-size: 17px;
}

.page-faq .step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .step p {
  margin: 0;
  color: var(--body-ink);
  font-size: 15px;
  line-height: 1.72;
}

.page-faq .step .step__need {
  margin-top: 12px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
  transition: color .2s var(--ease-out);
}

/* ---------- 图像区 ---------- */
.page-faq .faq-fig {
  margin: 0 0 clamp(20px, 3vw, 28px);
  border: 2px solid var(--line);
  background: var(--panel);
}

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

.page-faq .faq-fig figcaption {
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 排名核对分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: clamp(18px, 3vw, 26px);
  margin-bottom: clamp(20px, 3vw, 28px);
}

.page-faq .faq-split__lead {
  margin: 0 0 18px;
  color: var(--body-ink);
  line-height: 1.78;
  font-size: clamp(15px, 2.4vw, 16.5px);
  max-width: 62ch;
}

.page-faq .faq-split .faq-fig {
  margin-bottom: 0;
}

.page-faq .faq-compare {
  display: grid;
  gap: 12px;
}

.page-faq .cmp {
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 18px 16px;
}

.page-faq .cmp--new {
  border-color: var(--cyan);
  box-shadow: 8px 8px 0 0 rgba(47, 243, 224, .13);
}

.page-faq .cmp__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .cmp__title {
  margin: 8px 0 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .cmp__delta {
  margin: 10px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.page-faq .cmp--new .cmp__delta {
  color: var(--cyan);
}

.page-faq .cmp__note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--body-ink);
}

/* ---------- 开关示意 ---------- */
.page-faq .faq-switch {
  margin-bottom: clamp(18px, 3vw, 24px);
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 14px;
}

.page-faq .faq-switch svg {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-next {
  margin-top: clamp(36px, 6vw, 64px);
  margin-bottom: clamp(32px, 5vw, 56px);
  border: 2px solid var(--line);
  background:
    linear-gradient(135deg, rgba(180, 75, 255, .16), rgba(255, 61, 138, .09) 52%, rgba(6, 10, 20, 0) 82%),
    var(--panel);
  padding: clamp(24px, 4vw, 42px);
}

.page-faq .faq-next h2 {
  margin: 0;
  font-family: var(--font-cond);
  font-size: clamp(22px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-faq .faq-next p {
  margin: 14px 0 0;
  max-width: 62ch;
  color: var(--body-ink);
  line-height: 1.78;
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .qa summary {
    padding: 17px 20px;
    grid-template-columns: 20px minmax(0, 1fr);
  }

  .page-faq .qa__body {
    padding: 0 20px 18px 52px;
  }

  .page-faq .faq-compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
  }

  .page-faq .step + .step::before {
    content: "";
    position: absolute;
    left: -34px;
    top: 40px;
    width: 34px;
    border-top: 2px dashed var(--line);
  }
}

@media (hover: hover) {
  .page-faq .step:hover .step__need {
    color: var(--orange);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 216px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .qa summary,
  .page-faq .faq-toc__list a,
  .page-faq .step .step__need {
    transition: none;
  }
}
</main>