.page-faq {
  --faq-radius: 24px;
  --faq-gap: 18px;
}

.page-faq [id^="faq-"] {
  scroll-margin-top: 132px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero__title {
  margin: 18px 0 20px;
  max-width: 20ch;
  font-size: clamp(2rem, 6.2vw, 3.6rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--bw-fog);
}

.page-faq .faq-hero__lede {
  max-width: 62ch;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(28px, 4vw, 40px);
  padding-bottom: 4px;
}

.page-faq .faq-jump__link {
  display: inline-block;
  padding: 9px 18px;
  border: 1px solid var(--bw-line-2);
  border-radius: var(--bw-pill);
  color: var(--bw-sage);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: color .25s var(--bw-ease), border-color .25s var(--bw-ease), background .25s var(--bw-ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--bw-cyan);
  border-color: var(--bw-cyan);
  background: var(--bw-cyan-08);
}

/* ---------- 区块通用 ---------- */
.page-faq .faq-block__head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 3.5vw, 36px);
}

.page-faq .faq-block__head h2,
.page-faq .faq-split__main h2 {
  margin: 14px 0 16px;
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--bw-fog);
}

.page-faq .faq-block__intro {
  margin: 0;
  color: var(--bw-sage);
  font-size: 16px;
  line-height: 1.85;
}

.page-faq .faq-block__cta {
  margin-top: clamp(26px, 3.5vw, 38px);
}

.page-faq .faq-block--last {
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 三步步骤 ---------- */
.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding: 28px 24px 26px;
  background: var(--bw-char);
  border-radius: var(--faq-radius);
  border-left: 3px solid var(--bw-cyan);
  overflow: hidden;
}

.page-faq .faq-step::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -60px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--bw-cyan-08), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-step__num {
  display: block;
  font-size: 40px;
  line-height: 1;
  letter-spacing: -0.03em;
}

.page-faq .faq-step__title {
  margin: 14px 0 10px;
  font-size: 1.12rem;
  line-height: 1.4;
  color: var(--bw-fog);
}

.page-faq .faq-step__body {
  margin: 0 0 18px;
  color: var(--bw-sage);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .faq-step__link {
  display: inline-block;
  color: var(--bw-cyan);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--bw-ease);
}

.page-faq .faq-step__link:hover,
.page-faq .faq-step__link:focus-visible {
  border-bottom-color: var(--bw-cyan);
}

.page-faq .faq-steps__figure {
  margin: clamp(30px, 4vw, 44px) 0 0;
}

/* ---------- 双栏错落 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 40px);
  align-items: start;
}

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

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

.page-faq .faq-split__main .faq-block__intro {
  margin-bottom: 22px;
}

/* ---------- 问答卡片 ---------- */
.page-faq .faq-qa {
  position: relative;
  margin-bottom: 16px;
  padding: 2px 22px;
  background: var(--bw-char);
  border-radius: var(--faq-radius);
  border-left: 3px solid var(--bw-cyan);
}

.page-faq .faq-qa__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  color: var(--bw-fog);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
}

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

.page-faq .faq-qa__q::after {
  content: "+";
  flex: none;
  font-family: var(--bw-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--bw-cyan);
  transition: transform .28s var(--bw-ease), color .28s var(--bw-ease);
}

.page-faq .faq-qa[open] .faq-qa__q::after {
  content: "\2212";
  color: var(--bw-amber);
  transform: rotate(180deg);
}

.page-faq .faq-qa[open] {
  background: linear-gradient(180deg, var(--bw-cyan-08), transparent 62%), var(--bw-char);
}

.page-faq .faq-qa__a {
  max-width: 66ch;
  padding: 0 0 22px;
  color: var(--bw-sage);
  font-size: 15.5px;
  line-height: 1.85;
  animation: faq-open .3s var(--bw-ease);
}

.page-faq .faq-qa__a p {
  margin: 0 0 12px;
}

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

@keyframes faq-open {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

/* ---------- 纠错说明块 ---------- */
.page-faq .faq-note {
  padding: 26px 24px;
  background: var(--bw-mid);
  border-radius: var(--faq-radius);
}

.page-faq .faq-note--amber {
  background: var(--bw-char);
  border: 1px solid var(--bw-line-2);
}

.page-faq .faq-note__title {
  margin: 0 0 16px;
  font-size: 1.05rem;
  color: var(--bw-fog);
}

.page-faq .faq-note__list {
  margin: 0;
  padding-left: 20px;
  color: var(--bw-sage);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .faq-note__list li {
  margin-bottom: 10px;
}

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

.page-faq .faq-note__list::marker {
  color: var(--bw-cyan);
}

.page-faq .faq-note__body {
  margin: 0 0 18px;
  color: var(--bw-sage);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .faq-note__link {
  color: var(--bw-amber);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--bw-ease);
}

.page-faq .faq-note__link:hover,
.page-faq .faq-note__link:focus-visible {
  border-bottom-color: var(--bw-amber);
}

/* ---------- 移动端示意图 ---------- */
.page-faq .faq-device {
  margin: 0 auto;
  width: min(230px, 100%);
}

.page-faq .faq-device__screen {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 16px 26px;
  border: 1px solid var(--bw-line-2);
  border-radius: 26px;
  background: var(--bw-char);
  box-shadow: inset 0 0 0 6px rgba(11, 31, 26, .8);
}

.page-faq .faq-device__chip {
  height: 26px;
  border-radius: var(--bw-pill);
  background: rgba(143, 168, 160, .16);
}

.page-faq .faq-device__chip--on {
  background: var(--bw-cyan-16);
  border: 1px solid var(--bw-cyan);
}

.page-faq .faq-device__block {
  height: 54px;
  margin-top: 6px;
  border-radius: var(--bw-r-sm);
  background: rgba(43, 58, 63, .6);
}

.page-faq .faq-device__block--short {
  height: 34px;
  margin-top: 0;
  background: var(--bw-amber-14);
}

.page-faq .faq-device__cap {
  margin-top: 14px;
  color: var(--bw-sage);
  font-family: var(--bw-mono);
  font-size: 12px;
  line-height: 1.7;
  text-align: center;
}

/* ---------- 联系渠道 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-contact__card {
  padding: 24px 22px;
  background: var(--bw-char);
  border-radius: var(--faq-radius);
  border-top: 2px solid var(--bw-cyan);
}

.page-faq .faq-contact__label {
  margin: 0 0 12px;
  color: var(--bw-sage);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
}

.page-faq .faq-contact__value {
  margin: 0 0 12px;
  font-family: var(--bw-mono);
  font-size: 1.05rem;
  line-height: 1.5;
  word-break: break-word;
}

.page-faq .faq-contact__value a {
  color: var(--bw-amber);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--bw-ease);
}

.page-faq .faq-contact__value a:hover,
.page-faq .faq-contact__value a:focus-visible {
  border-bottom-color: var(--bw-amber);
}

.page-faq .faq-contact__hint {
  margin: 0;
  color: var(--bw-sage);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .faq-contact__foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  color: var(--bw-sage);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .faq-contact__foot a {
  color: var(--bw-cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-contact__foot a:hover,
.page-faq .faq-contact__foot a:focus-visible {
  border-bottom-color: var(--bw-cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .faq-contact {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 940px) {
  .page-faq .faq-split {
    grid-template-columns: 1.6fr 1fr;
  }

  .page-faq .faq-split--reverse {
    grid-template-columns: 1fr 1.6fr;
  }

  .page-faq .faq-device {
    margin: 0;
    position: sticky;
    top: 140px;
  }

  .page-faq .faq-contact {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .page-faq .faq-hero__title {
    max-width: none;
  }

  .page-faq .faq-step,
  .page-faq .faq-note,
  .page-faq .faq-contact__card {
    padding-left: 18px;
    padding-right: 18px;
  }

  .page-faq .faq-qa {
    padding: 2px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-qa__a {
    animation: none;
  }
}