.page-faq {
  --faq-panel: var(--ink-800);
  --faq-line: var(--ink-700);
  --faq-ease: 240ms cubic-bezier(0.2, 0.7, 0.3, 1);
  background: var(--ink-950);
  color: var(--mist-100);
  font-family: var(--f-body);
  padding-bottom: clamp(56px, 9vw, 120px);
}

.page-faq :focus-visible {
  outline: 2px solid var(--flare-500);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: 16px;
  max-width: 940px;
  padding: clamp(28px, 5vw, 64px) 0 clamp(26px, 4vw, 46px);
  border-bottom: var(--bd) solid var(--faq-line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: calc(var(--bd) * -1);
  width: 96px;
  height: 4px;
  background: var(--flare-500);
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--volt-400);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--f-cond);
  font-size: clamp(34px, 7.4vw, 62px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--mist-400);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border: var(--bd) solid var(--faq-line);
  border-bottom: none;
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  padding: 14px 18px;
  border-bottom: var(--bd) solid var(--faq-line);
  background: var(--ink-900);
}

.page-faq .faq-hero__meta b {
  font-family: var(--f-mono);
  font-size: 21px;
  font-weight: 800;
  color: var(--flare-500);
  letter-spacing: 0.01em;
}

.page-faq .faq-hero__meta span {
  font-size: 13px;
  color: var(--mist-400);
}

/* ---------- 分类跳转 ---------- */

.page-faq .faq-jump {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: clamp(24px, 4vw, 42px) 0;
}

.page-faq .faq-jump__item {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 15px 16px;
  border: var(--bd) solid var(--faq-line);
  background: var(--faq-panel);
  color: var(--mist-100);
  text-decoration: none;
  font-family: var(--f-cond);
  font-size: 18px;
  letter-spacing: 0.02em;
  box-shadow: var(--sh-soft);
  transition: background var(--faq-ease), color var(--faq-ease), transform var(--faq-ease);
}

.page-faq .faq-jump__idx {
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--volt-400);
  transition: color var(--faq-ease);
}

.page-faq .faq-jump__item:hover,
.page-faq .faq-jump__item:focus-visible {
  background: var(--flare-500);
  color: var(--ink-950);
  transform: translate(-2px, -2px);
}

.page-faq .faq-jump__item:hover .faq-jump__idx,
.page-faq .faq-jump__item:focus-visible .faq-jump__idx {
  color: var(--ink-950);
}

/* ---------- 区块通用 ---------- */

.page-faq .faq-block {
  margin-top: clamp(44px, 7vw, 90px);
  scroll-margin-top: 84px;
}

.page-faq .faq-block__head {
  display: grid;
  gap: 10px;
  padding-bottom: 18px;
  margin-bottom: 26px;
  border-bottom: var(--bd) solid var(--faq-line);
}

.page-faq .faq-block__no {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--flare-500);
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-family: var(--f-cond);
  font-size: clamp(26px, 4.6vw, 42px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.01em;
}

.page-faq .faq-block__head p {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist-400);
}

.page-faq .faq-block__head .faq-block__no {
  color: var(--volt-400);
}

/* ---------- 十二项信息图 ---------- */

.page-faq .adapt-diagram {
  position: relative;
  overflow: hidden;
  margin-bottom: 26px;
  border: var(--bd) solid var(--faq-line);
  background: var(--ink-900);
  box-shadow: var(--sh-hard);
}

.page-faq .adapt-diagram__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  filter: saturate(0.55);
}

.page-faq .adapt-diagram__body {
  position: relative;
  display: grid;
  gap: 26px;
  padding: clamp(20px, 4vw, 40px);
}

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

.page-faq .adapt-level__tag {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--f-cond);
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--mist-100);
}

.page-faq .adapt-level__tag span {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  padding: 3px 7px;
  border: 1px solid var(--faq-line);
  color: var(--ink-950);
}

.page-faq .adapt-level__tag b {
  margin-left: auto;
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--mist-400);
}

.page-faq .adapt-level--one .adapt-level__tag span {
  background: var(--flare-500);
}

.page-faq .adapt-level--two .adapt-level__tag span {
  background: var(--volt-400);
}

.page-faq .adapt-chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-faq .adapt-chips li {
  padding: 11px 12px;
  border: 1px solid var(--faq-line);
  border-left-width: 3px;
  background: rgba(10, 14, 13, 0.72);
  font-family: var(--f-mono);
  font-size: 13px;
  line-height: 1.4;
  color: var(--mist-100);
}

.page-faq .adapt-level--one .adapt-chips li {
  border-left-color: var(--flare-500);
}

.page-faq .adapt-level--two .adapt-chips li {
  border-left-color: var(--volt-400);
}

/* ---------- 十二项明细 ---------- */

.page-faq .adapt-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .adapt-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 16px;
  border: var(--bd) solid var(--faq-line);
  background: var(--faq-panel);
  scroll-margin-top: 96px;
  transition: border-color var(--faq-ease), background var(--faq-ease), box-shadow var(--faq-ease);
}

.page-faq .adapt-item:target {
  border-color: var(--volt-400);
  background: var(--ink-900);
  box-shadow: var(--sh-volt);
}

.page-faq .adapt-item__no {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: var(--volt-400);
  color: var(--ink-950);
  font-family: var(--f-mono);
  font-size: 15px;
  font-weight: 700;
}

.page-faq .adapt-item__body h3 {
  margin: 0 0 6px;
  font-family: var(--f-cond);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.page-faq .adapt-item__body p {
  margin: 0;
  max-width: 74ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist-400);
}

/* ---------- 问答折叠 ---------- */

.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  border: var(--bd) solid var(--faq-line);
  background: var(--faq-panel);
  transition: border-color var(--faq-ease);
}

.page-faq .qa[open] {
  border-color: var(--flare-500);
}

.page-faq .qa__q {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  line-height: 1.5;
  color: var(--mist-100);
}

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

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

.page-faq .qa__idx {
  flex: none;
  padding: 3px 7px;
  border: 1px solid var(--faq-line);
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--volt-400);
}

.page-faq .qa[open] .qa__idx {
  color: var(--ink-950);
  background: var(--flare-500);
  border-color: var(--flare-500);
}

.page-faq .qa__text {
  flex: 1 1 auto;
}

.page-faq .qa__chev {
  flex: none;
  width: 11px;
  height: 11px;
  margin-right: 4px;
  border-right: 2px solid var(--flare-500);
  border-bottom: 2px solid var(--flare-500);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--faq-ease);
}

.page-faq .qa[open] .qa__chev {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.page-faq .qa__a {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 70ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-400);
}

.page-faq .qa__a .sf-link {
  margin: 0 2px;
}

/* ---------- 图文分栏 ---------- */

.page-faq .faq-block--split {
  display: grid;
  gap: 26px;
}

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

.page-faq .faq-block__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--bd) solid var(--faq-line);
  box-shadow: var(--sh-hard);
}

.page-faq .faq-block__figure figcaption {
  margin-top: 14px;
  padding-left: 12px;
  border-left: 3px solid var(--volt-400);
  font-family: var(--f-serif);
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist-400);
}

/* ---------- 人工协助 ---------- */

.page-faq .faq-help {
  display: grid;
  gap: 22px;
  margin-top: clamp(50px, 8vw, 100px);
  padding: clamp(22px, 4vw, 46px);
  border: var(--bd) solid var(--faq-line);
  background:
    linear-gradient(135deg, rgba(255, 94, 26, 0.16), rgba(255, 94, 26, 0) 58%),
    var(--ink-900);
  box-shadow: var(--sh-hard);
}

.page-faq .faq-help__kicker {
  margin: 0 0 10px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--volt-400);
}

.page-faq .faq-help__body h2 {
  margin: 0 0 12px;
  font-family: var(--f-cond);
  font-size: clamp(26px, 4.4vw, 40px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.01em;
}

.page-faq .faq-help__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist-400);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-help__contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border: var(--bd) solid var(--faq-line);
  background: rgba(10, 14, 13, 0.55);
}

.page-faq .faq-help__contact li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-help__contact li:last-child {
  border-bottom: none;
}

.page-faq .faq-help__k {
  flex: none;
  min-width: 72px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist-400);
}

.page-faq .faq-help__contact b {
  font-family: var(--f-mono);
  font-size: 15px;
  font-weight: 400;
  color: var(--mist-100);
  word-break: break-word;
}

.page-faq .faq-help .sf-note {
  margin: 0;
}

/* ---------- 断点 ---------- */

@media (min-width: 560px) {
  .page-faq .faq-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-hero__meta li {
    border-bottom: none;
    border-right: var(--bd) solid var(--faq-line);
    flex-direction: column;
    gap: 4px;
  }

  .page-faq .faq-hero__meta li:last-child {
    border-right: none;
  }

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

  .page-faq .adapt-chips {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .adapt-item {
    grid-template-columns: 52px minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-jump {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    position: sticky;
    top: 12px;
    z-index: 2;
  }

  .page-faq .adapt-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .page-faq .faq-block--split {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    align-items: start;
    gap: 34px;
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-help__body {
    grid-row: 1 / span 2;
  }

  .page-faq .faq-help .sf-note {
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__item,
  .page-faq .qa__chev,
  .page-faq .adapt-item {
    transition: none;
  }

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