.page-faq {
  --faq-cur: var(--c-cyan);
  --faq-paper-ink: #1b1f2b;
  background: var(--c-ink);
  color: var(--c-paper);
  padding-bottom: clamp(40px, 6vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 52px) 0 clamp(28px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 150% at 92% -20%, rgba(37, 225, 212, .16), transparent 58%),
    radial-gradient(80% 120% at 0% 120%, rgba(255, 122, 47, .13), transparent 62%);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 40px);
  align-items: end;
}

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

.page-faq .faq-hero .eyebrow {
  margin-top: 14px;
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: clamp(29px, 6.1vw, 60px);
  line-height: 1.05;
  letter-spacing: -.01em;
  color: var(--c-paper);
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: clamp(15.5px, 1.3vw, 18px);
  line-height: 1.78;
  color: var(--c-rock);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-faq .faq-hero__facts li {
  padding: 12px 14px 15px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(19, 28, 74, .5);
}

.page-faq .faq-hero__num {
  display: block;
  font-family: var(--ff-mono);
  font-size: clamp(19px, 2.6vw, 28px);
  line-height: 1.12;
  color: var(--c-orange);
  letter-spacing: -.02em;
}

.page-faq .faq-hero__num--cyan { color: var(--c-cyan); }
.page-faq .faq-hero__num--moss { color: var(--c-moss); }

.page-faq .faq-hero__label {
  display: block;
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--c-rock);
}

.page-faq .faq-hero__figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__figure .figure__media {
  border: 1px solid var(--line);
  background: var(--c-panel);
  overflow: hidden;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* ---------- 主题锚点条 ---------- */
.page-faq .faq-nav {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(5, 8, 27, .92), rgba(19, 28, 74, .34));
}

.page-faq .faq-nav__inner {
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-nav__inner::-webkit-scrollbar { display: none; }

.page-faq .faq-nav__list {
  display: flex;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-nav__link {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 15px;
  white-space: nowrap;
  font-size: 13.5px;
  color: var(--c-rock);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  color: var(--c-paper);
  border-bottom-color: var(--c-cyan);
  background: rgba(37, 225, 212, .07);
}

.page-faq .faq-nav__no {
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--c-cyan);
}

/* ---------- 索引 + 主体 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 44px);
  margin-top: clamp(26px, 5vw, 54px);
}

.page-faq .rail__label {
  margin: 0 0 10px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-rock);
}

.page-faq .rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .rail__list::-webkit-scrollbar { display: none; }

.page-faq .rail__link {
  display: block;
  padding: 8px 12px;
  white-space: nowrap;
  font-size: 13px;
  line-height: 1.45;
  color: var(--c-rock);
  text-decoration: none;
  border: 1px solid var(--line-soft);
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.page-faq .rail__link:hover,
.page-faq .rail__link:focus-visible {
  color: var(--c-paper);
  border-color: var(--line-strong);
}

.page-faq .rail__link[aria-current="true"] {
  color: var(--c-deep);
  background: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-faq .rail__no {
  font-family: var(--ff-mono);
  margin-right: 4px;
  opacity: .85;
}

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

/* ---------- 分组标题 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 84px;
  padding-top: clamp(26px, 4vw, 46px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .layout__main > .faq-group:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 22px);
  align-items: baseline;
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-group__no {
  font-family: var(--ff-mono);
  font-size: clamp(25px, 4.4vw, 46px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--faq-cur);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--c-paper);
}

.page-faq .faq-group__lede {
  margin: 8px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-rock);
}

.page-faq .faq-group__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 26px);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(19, 28, 74, .68), rgba(19, 28, 74, .38));
  transition: border-color var(--t-fast), background var(--t-fast);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--faq-cur);
  opacity: .45;
  transform: scaleY(.38);
  transform-origin: top center;
  transition: transform var(--t-slow), opacity var(--t-slow);
}

.page-faq .faq-item:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-item:hover::before {
  opacity: .8;
}

.page-faq .faq-item[open] {
  border-color: rgba(37, 225, 212, .32);
  background: linear-gradient(180deg, rgba(19, 28, 74, .94), rgba(11, 17, 48, .72));
}

.page-faq .faq-item[open]::before {
  transform: scaleY(1);
  opacity: 1;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 18px 15px 20px;
  cursor: pointer;
  list-style: none;
  transition: background var(--t-fast);
}

.page-faq .faq-item__q::-webkit-details-marker { display: none; }
.page-faq .faq-item__q::marker { content: ""; }

.page-faq .faq-item__q:hover {
  background: rgba(37, 225, 212, .05);
}

.page-faq .faq-item__q:focus-visible {
  outline: 1px solid var(--c-cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__qtext {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: clamp(16.5px, 1.55vw, 20px);
  line-height: 1.45;
  letter-spacing: .005em;
  color: var(--c-paper);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--faq-cur);
  transition: transform var(--t-slow), opacity var(--t-slow);
}

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

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

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

.page-faq .faq-item__a {
  margin: 0 14px 14px 20px;
  padding: 15px 18px 17px;
  background: var(--c-bone);
  border-left: 2px solid var(--faq-cur);
  color: var(--faq-paper-ink);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--faq-paper-ink);
}

.page-faq .faq-item__a p + p {
  margin-top: 10px;
}

.page-faq .faq-item__a a {
  color: var(--c-cyan-dim);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-item__a a:hover {
  color: var(--c-deep);
}

/* ---------- 分组主题色 ---------- */
.page-faq .faq-group--panel { --faq-cur: var(--c-cyan); }
.page-faq .faq-group--rank { --faq-cur: var(--c-orange); }
.page-faq .faq-group--download { --faq-cur: var(--c-amber); }
.page-faq .faq-group--commute { --faq-cur: var(--c-moss); }
.page-faq .faq-group--verify { --faq-cur: var(--c-clay); }

/* ---------- 分组配图 ---------- */
.page-faq .faq-group__figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-group__figure .figure__media {
  border: 1px solid var(--line-soft);
  background: var(--c-panel);
  overflow: hidden;
}

.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 收尾入口 ---------- */
.page-faq .faq-next {
  margin-top: clamp(40px, 6vw, 84px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(19, 28, 74, .72), rgba(5, 8, 27, .9));
}

.page-faq .faq-next__inner {
  display: grid;
  gap: 18px;
  padding-top: clamp(24px, 3.4vw, 42px);
  padding-bottom: clamp(24px, 3.4vw, 42px);
}

.page-faq .faq-next__lead h2 {
  margin: 0;
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.25;
  color: var(--c-paper);
}

.page-faq .faq-next__lead p {
  margin: 9px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-rock);
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--rail) minmax(0, 1fr);
    gap: clamp(26px, 3.4vw, 56px);
    align-items: start;
  }

  .page-faq .rail {
    position: sticky;
    top: 84px;
  }

  .page-faq .rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .rail__link {
    white-space: normal;
    font-size: 12.5px;
    padding: 8px 10px;
    margin-bottom: 3px;
    border: 0;
    border-left: 2px solid var(--line-soft);
    background: transparent;
  }

  .page-faq .rail__link[aria-current="true"] {
    color: var(--c-cyan);
    background: rgba(37, 225, 212, .12);
    border-left-color: var(--c-cyan);
  }

  .page-faq .rail__no {
    display: block;
    margin: 0 0 2px;
    font-size: 11px;
    color: var(--c-cyan);
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: clamp(28px, 4.5vw, 64px);
  }
}

@media (min-width: 820px) {
  .page-faq .faq-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 34px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-group__body--split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item::before,
  .page-faq .faq-item__q,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after,
  .page-faq .rail__link,
  .page-faq .faq-nav__link {
    transition: none;
  }
}