.page-faq {
  --faq-aside: 234px;
  --faq-gap: clamp(22px, 3.6vw, 46px);
  --faq-soft: rgba(43, 230, 200, 0.12);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 58px) 0 clamp(30px, 4.6vw, 54px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(115% 95% at 92% -10%, rgba(43, 230, 200, 0.17), transparent 60%),
    radial-gradient(85% 70% at 0% 112%, rgba(255, 138, 61, 0.11), transparent 62%),
    linear-gradient(180deg, var(--ink-850) 0%, var(--ink-900) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: -30% -20% auto 46%;
  height: 150%;
  transform: rotate(-8deg);
  background: linear-gradient(100deg, transparent 44%, rgba(43, 230, 200, 0.075) 50%, transparent 57%);
  pointer-events: none;
}

.page-faq .faq-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 18px;
  max-width: 20em;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.2vw, 62px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--text);
  transform: skewX(-1.5deg);
  transform-origin: left bottom;
}

.page-faq .faq-hero .lede {
  max-width: 34em;
  color: var(--text-soft);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stats li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid rgba(43, 230, 200, 0.28);
  border-radius: var(--r-pill);
  background: rgba(14, 31, 69, 0.62);
  font-size: 13.5px;
  color: var(--text-soft);
}

.page-faq .faq-hero__stats .num {
  font-size: 14px;
  color: var(--cyan);
}

/* ---------- 目录 + 正文 双栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding-top: clamp(28px, 5vw, 58px);
  padding-bottom: clamp(44px, 6vw, 84px);
}

.page-faq .faq-toc {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(23, 48, 107, 0.5), rgba(6, 15, 38, 0.35));
}

.page-faq .faq-toc__title {
  margin: 0 0 12px;
  padding-left: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

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

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--r-pill);
  border-left: 2px solid transparent;
  font-size: 14.5px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.28s var(--ease), background 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-faq .faq-toc__link .num {
  font-size: 12px;
  color: var(--cyan-deep);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--text);
  background: rgba(43, 230, 200, 0.08);
  border-left-color: var(--cyan);
  outline: none;
}

/* ---------- 分区 ---------- */
.page-faq .faq-block {
  padding-top: clamp(34px, 5vw, 60px);
  scroll-margin-top: calc(var(--header-h) + 22px);
}

.page-faq .faq-block:first-child {
  padding-top: 0;
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-block__head .section__index {
  font-size: clamp(26px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1;
  color: var(--muted);
  opacity: 0.34;
  transition: color 0.3s var(--ease), opacity 0.3s var(--ease);
}

.page-faq .faq-block.is-active .section__index {
  color: var(--cyan);
  opacity: 1;
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-block__lead {
  max-width: 38em;
  margin: 16px 0 4px;
  color: var(--text-soft);
}

.page-faq .faq-block__lead a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 230, 200, 0.45);
}

.page-faq .faq-block__lead a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 配图 ---------- */
.page-faq .faq-media {
  margin: 24px 0 8px;
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 12 / 7;
}

.page-faq .faq-media--tall {
  aspect-ratio: 5 / 4;
}

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

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.7vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  transition: color 0.24s var(--ease);
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
  color: var(--cyan-deep);
  transition: transform 0.3s var(--ease), color 0.3s var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  content: "+";
  transform: rotate(135deg);
  color: var(--orange);
}

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

.page-faq .qa__mark {
  flex: 0 0 auto;
  font-size: 12.5px;
  color: var(--cyan);
  padding-top: 4px;
}

.page-faq .qa__a {
  max-width: 40em;
  padding: 0 4px 24px 34px;
  color: var(--text-soft);
}

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

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 230, 200, 0.4);
}

.page-faq .qa__a a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-faq .qa__a .hl {
  background: rgba(43, 230, 200, 0.16);
  color: var(--cyan);
  padding: 0 4px;
  border-radius: 4px;
}

/* ---------- 步骤块 ---------- */
.page-faq .steps {
  display: grid;
  gap: 16px;
  margin: 2px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-faq .steps__item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 16px;
  top: 38px;
  bottom: -16px;
  width: 1px;
  background: linear-gradient(180deg, rgba(43, 230, 200, 0.4), rgba(43, 230, 200, 0));
}

.page-faq .steps__no {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(43, 230, 200, 0.38);
  background: rgba(43, 230, 200, 0.1);
  font-size: 13px;
  color: var(--cyan);
}

.page-faq .steps__body {
  padding-top: 5px;
  color: var(--text-soft);
}

/* ---------- 反馈渠道 ---------- */
.page-faq .faq-links {
  display: grid;
  gap: 1px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--line);
  overflow: hidden;
}

.page-faq .faq-links__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 16px 18px;
  background: linear-gradient(120deg, rgba(14, 31, 69, 0.85), rgba(6, 15, 38, 0.85));
}

.page-faq .faq-links__label {
  flex: 0 0 100%;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-links__value {
  flex: 1 1 200px;
  min-width: 0;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .copy-btn {
  margin-left: auto;
  flex: 0 0 auto;
}

.page-faq .faq-note {
  margin-top: 22px;
  padding: 24px 22px;
  border-left: 3px solid var(--orange);
  border-radius: var(--r-md);
  background: linear-gradient(120deg, rgba(255, 138, 61, 0.1), rgba(14, 31, 69, 0.55));
}

.page-faq .faq-note p {
  margin: 0 0 10px;
  color: var(--text-soft);
}

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

.page-faq .faq-note .num {
  color: var(--cyan);
}

.page-faq .faq-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 230, 200, 0.4);
}

.page-faq .faq-note a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 桌面：目录吸附 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-aside) minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 4vw, 60px);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-faq .faq-links__label {
    flex: 0 0 84px;
  }

  .page-faq .faq-links__item {
    padding: 18px 22px;
  }

  .page-faq .faq-note {
    padding: 26px 28px;
  }
}

/* ---------- 宽屏：问答区留白更大 ---------- */
@media (min-width: 1180px) {
  .page-faq .faq-body {
    max-width: 780px;
  }
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 520px) {
  .page-faq .qa__q {
    padding: 18px 2px;
  }

  .page-faq .qa__a {
    padding-left: 2px;
    padding-right: 2px;
  }

  .page-faq .faq-links__item {
    padding: 15px 16px;
  }

  .page-faq .copy-btn {
    margin-left: 0;
  }
}

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

  .page-faq .faq-hero h1 {
    transform: none;
  }
}