.page-faq {
  --faq-cut: 22px;
  --faq-line: rgba(36, 31, 26, 0.2);
  --faq-line-soft: rgba(36, 31, 26, 0.12);
  --faq-ink: var(--clr-ink);
  background: var(--clr-cream);
  overflow-x: clip;
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(26px, 4vw, 46px);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.page-faq .breadcrumbs a {
  color: var(--clr-lake);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.22s var(--ease);
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  border-bottom-color: var(--clr-lake);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-top: clamp(30px, 5vw, 58px);
  padding-bottom: clamp(38px, 6vw, 76px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 34px;
  align-items: end;
}

.page-faq h1 {
  margin: 12px 0 22px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 7vw, 84px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--faq-ink);
}

.page-faq .faq-hero__main .lede {
  max-width: 46em;
}

.page-faq .faq-switch {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 24px 22px 22px;
  background: var(--clr-lake);
  color: var(--clr-white);
  text-decoration: none;
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
  transition: background 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-faq .faq-switch:hover,
.page-faq .faq-switch:focus-visible {
  background: var(--clr-lake-deep);
  transform: translateY(-3px);
}

.page-faq .faq-switch__mirror {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 60px;
}

.page-faq .mirror-bar {
  display: block;
  background: var(--clr-lake-soft);
  transition: background 0.28s var(--ease);
}

.page-faq .mirror-bar--phone {
  width: 26px;
  height: 52px;
}

.page-faq .mirror-bar--desk {
  width: 64px;
  height: 36px;
}

.page-faq .faq-switch:hover .mirror-bar,
.page-faq .faq-switch:focus-visible .mirror-bar {
  background: var(--clr-gold);
}

.page-faq .faq-switch__label {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-switch__go {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--clr-gold);
}

.page-faq .jump-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(34px, 5vw, 54px);
  padding-top: 22px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .jump-strip__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 14px;
  line-height: 1;
  color: var(--faq-ink);
  text-decoration: none;
  background: var(--clr-white);
  border: 1px solid var(--faq-line-soft);
  transition: background 0.22s var(--ease), color 0.22s var(--ease),
    border-color 0.22s var(--ease);
}

.page-faq .jump-strip__link .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--clr-lake);
  transition: color 0.22s var(--ease);
}

.page-faq .jump-strip__link:hover,
.page-faq .jump-strip__link:focus-visible {
  background: var(--clr-lake);
  border-color: var(--clr-lake);
  color: var(--clr-white);
}

.page-faq .jump-strip__link:hover .mono,
.page-faq .jump-strip__link:focus-visible .mono {
  color: var(--clr-gold);
}

/* ---------- 通用小标题 ---------- */

.page-faq .section-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .section-head .h2 {
  margin: 10px 0 0;
  max-width: 26em;
}

/* ---------- 入口怎么选 ---------- */

.page-faq .faq-choose__lede {
  max-width: 44em;
}

.page-faq .choose-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(28px, 4vw, 46px);
  background: var(--faq-line-soft);
  border: 1px solid var(--faq-line-soft);
}

.page-faq .choose-cell {
  padding: clamp(24px, 3vw, 34px) clamp(20px, 2.4vw, 28px) clamp(28px, 3.4vw, 40px);
  background: var(--clr-cream);
  transition: background 0.28s var(--ease);
}

.page-faq .choose-cell:hover {
  background: var(--clr-white);
}

.page-faq .choose-cell__k {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--clr-lake);
}

.page-faq .choose-cell .h3 {
  margin: 0 0 12px;
}

.page-faq .choose-cell p:last-child {
  margin: 0;
  color: var(--text-soft);
}

/* ---------- 三步设置 ---------- */

.page-faq .faq-steps__figure {
  margin: 0 0 clamp(28px, 4vw, 46px);
}

.page-faq .steps {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step {
  padding: 26px 24px 30px;
  background: var(--clr-cream);
  border: 1px solid var(--faq-line-soft);
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
  transition: background 0.28s var(--ease);
}

.page-faq .step:hover,
.page-faq .step:focus-within {
  background: var(--clr-white);
}

.page-faq .step__num {
  display: block;
  margin-bottom: 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(56px, 8vw, 94px);
  line-height: 0.86;
  letter-spacing: -0.04em;
  color: var(--clr-lake-soft);
  transition: color 0.28s var(--ease);
}

.page-faq .step:hover .step__num,
.page-faq .step:focus-within .step__num {
  color: var(--clr-gold);
}

.page-faq .step .h3 {
  margin: 0 0 12px;
}

.page-faq .step p {
  margin: 0 0 14px;
  color: var(--text-soft);
}

.page-faq .step__check {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--faq-line);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--clr-lake);
}

/* ---------- 索引对照 ---------- */

.page-faq .faq-index .lede {
  max-width: 42em;
}

.page-faq .guide {
  margin-top: clamp(28px, 4vw, 46px);
  border-top: 1px solid var(--faq-line);
}

.page-faq .guide__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px 20px;
  padding: clamp(22px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .guide__row .h3 {
  margin: 0 0 10px;
}

.page-faq .guide__row p {
  margin: 0;
  max-width: 46em;
  color: var(--text-soft);
}

.page-faq .guide__row a {
  color: var(--clr-lake);
  text-decoration: none;
  border-bottom: 1px solid var(--clr-lake-soft, rgba(169, 207, 227, 0.9));
  transition: border-color 0.22s var(--ease);
}

.page-faq .guide__row a:hover,
.page-faq .guide__row a:focus-visible {
  border-bottom-color: var(--clr-lake);
}

/* ---------- 订阅 ---------- */

.page-faq .faq-sub__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-faq .faq-sub__intro .lede {
  max-width: 30em;
}

.page-faq .faq-sub__intro .btn {
  margin-top: 24px;
}

.page-faq .sub-list {
  display: grid;
  gap: 14px;
}

.page-faq .sub-card {
  padding: 22px 24px;
  background: rgba(251, 252, 253, 0.08);
  border-left: 3px solid var(--clr-gold);
  transition: background 0.28s var(--ease);
}

.page-faq .sub-card:hover {
  background: rgba(251, 252, 253, 0.15);
}

.page-faq .sub-card__k {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--clr-gold);
}

.page-faq .sub-card .h3 {
  margin: 0 0 8px;
  color: var(--clr-white);
}

.page-faq .sub-card p:last-child {
  margin: 0;
  color: rgba(251, 252, 253, 0.84);
}

/* ---------- 问答 ---------- */

.page-faq .faq-qa__figure {
  margin: 0 0 clamp(28px, 4vw, 44px);
}

.page-faq .qa {
  margin-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--faq-line);
}

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

.page-faq .qa__q {
  position: relative;
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 22px 46px 22px 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.55;
  color: var(--faq-ink);
  transition: color 0.22s var(--ease);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--clr-lake);
}

.page-faq .qa__no {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--clr-ember);
}

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 22px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--clr-gold);
}

.page-faq .qa__item[open] .qa__q::after {
  content: "–";
}

.page-faq .qa__a {
  margin: 0 0 26px clamp(0px, 4vw, 50px);
  padding: 2px 0 2px 22px;
  border-left: 2px solid var(--clr-gold);
}

.page-faq .qa__a p {
  margin: 0 0 14px;
  max-width: 60em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-soft);
}

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

.page-faq .qa__a a {
  color: var(--clr-lake);
  text-decoration: none;
  border-bottom: 1px solid rgba(14, 92, 138, 0.35);
  transition: border-color 0.22s var(--ease);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  border-bottom-color: var(--clr-lake);
}

.page-faq .qa__lbl {
  display: inline-block;
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--clr-lake);
}

.page-faq .faq-qa__foot {
  margin: clamp(30px, 4vw, 46px) 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--faq-line-soft);
  max-width: 48em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .faq-qa__foot a {
  color: var(--clr-lake);
  text-decoration: none;
  border-bottom: 1px solid rgba(14, 92, 138, 0.35);
}

.page-faq .faq-qa__foot a:hover,
.page-faq .faq-qa__foot a:focus-visible {
  border-bottom-color: var(--clr-lake);
}

/* ---------- 图片 ---------- */

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

.page-faq .figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--clr-lake-soft);
}

.page-faq .figure__cap {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--text-soft);
}

/* ---------- 焦点可见性 ---------- */

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

/* ---------- 响应式 ---------- */

@media (min-width: 780px) {
  .page-faq .choose-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .guide__row {
    grid-template-columns: 78px minmax(0, 1fr);
    gap: 28px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.62fr) minmax(250px, 0.62fr);
    gap: clamp(34px, 5vw, 76px);
  }

  .page-faq .faq-sub__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: clamp(40px, 6vw, 88px);
  }
}

@media (max-width: 560px) {
  .page-faq .qa__q {
    gap: 12px;
    padding-right: 34px;
  }

  .page-faq .qa__a {
    margin-left: 0;
    padding-left: 16px;
  }

  .page-faq .qa__lbl {
    display: block;
    margin: 0 0 4px;
  }

  .page-faq .jump-strip__link {
    flex: 1 1 calc(50% - 8px);
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-switch,
  .page-faq .mirror-bar,
  .page-faq .step,
  .page-faq .step__num,
  .page-faq .sub-card,
  .page-faq .choose-cell,
  .page-faq .jump-strip__link {
    transition: none;
  }

  .page-faq .faq-switch:hover,
  .page-faq .faq-switch:focus-visible {
    transform: none;
  }
}