.page-faq {
  --faq-rail: 264px;
  --faq-glass: linear-gradient(180deg, rgba(18, 56, 92, .52) 0%, rgba(10, 27, 51, .84) 100%);
  --faq-cyan-glow: rgba(34, 211, 238, .16);
  --faq-coral-glow: rgba(255, 107, 74, .18);
  --faq-sticky: 96px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-lead {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 48px) 0 clamp(30px, 4.6vw, 58px);
  background: linear-gradient(180deg, var(--c-deep) 0%, var(--c-midnight) 100%);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-lead__glow {
  position: absolute;
  inset: -34% -12% auto -34%;
  height: 150%;
  pointer-events: none;
  background:
    radial-gradient(46% 42% at 82% 8%, var(--faq-cyan-glow), transparent 70%),
    radial-gradient(38% 36% at 6% 96%, var(--faq-coral-glow), transparent 72%),
    repeating-linear-gradient(115deg, var(--c-line-soft) 0 1px, transparent 1px 86px);
}

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

.page-faq .faq-lead__eyebrow {
  margin: 18px 0 0;
  font-size: var(--fs-label);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .faq-lead__title {
  margin: 12px 0 16px;
  max-width: 24ch;
  font-size: var(--fs-h1);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.015em;
  color: var(--c-paper);
}

.page-faq .faq-lead__title em {
  font-style: normal;
  color: var(--c-cyan);
  border-bottom: 3px solid var(--c-coral);
  padding-bottom: 2px;
}

.page-faq .faq-lead__intro {
  max-width: 64ch;
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--c-text-soft);
}

.page-faq .faq-lead__facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  background: var(--c-line-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-faq .faq-lead__facts li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 16px;
  background: rgba(6, 16, 31, .84);
}

.page-faq .faq-fact__value {
  font-size: clamp(23px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--c-coral);
}

.page-faq .faq-fact__label {
  font-size: var(--fs-label);
  line-height: 1.55;
  color: var(--c-stone);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 34px);
  align-items: start;
  padding: clamp(26px, 4vw, 52px) 0 clamp(42px, 6vw, 80px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index__label {
  margin: 0 0 10px;
  font-size: var(--fs-label);
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--c-stone);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__item {
  flex: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 10px 13px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-sm);
  background: rgba(18, 56, 92, .32);
  color: var(--c-text-soft);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color .22s ease, border-color .22s ease, background .22s ease;
}

.page-faq .faq-index__num {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-cyan);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--c-paper);
  border-color: var(--c-cyan);
  background: rgba(34, 211, 238, .12);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 60px);
}

.page-faq .faq-group__head {
  margin-bottom: 18px;
}

.page-faq .faq-group__head::before {
  content: "";
  display: block;
  width: 76px;
  height: 3px;
  margin-bottom: 14px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-coral));
}

.page-faq .faq-group__num {
  font-size: var(--fs-label);
  letter-spacing: .18em;
  color: var(--c-coral);
}

.page-faq .faq-group__title {
  margin: 6px 0 8px;
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--c-paper);
}

.page-faq .faq-group__note {
  margin: 0;
  max-width: 58ch;
  padding-left: 12px;
  border-left: 2px solid var(--c-line);
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-stone);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: var(--faq-glass);
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: border-color .22s ease, background .22s ease;
}

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

.page-faq .faq-item[open] {
  border-color: rgba(34, 211, 238, .40);
  background: linear-gradient(180deg, rgba(18, 56, 92, .64) 0%, rgba(10, 27, 51, .88) 100%);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-paper);
}

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

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

.page-faq .faq-item__tag {
  flex: none;
  margin-top: 3px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-coral);
}

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 17px;
  line-height: 1.4;
  color: var(--c-cyan);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--c-coral);
}

.page-faq .faq-item__a {
  margin: 0 18px;
  padding: 14px 0 18px;
  border-top: 1px solid var(--c-line-soft);
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--c-text-soft);
}

.page-faq .faq-item__a > p {
  margin: 0;
}

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

.page-faq .faq-item__a strong {
  font-weight: 700;
  color: var(--c-paper);
}

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

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

/* ---------- 两步路径 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px dashed var(--c-line);
  border-radius: var(--r-md);
  background: rgba(6, 16, 31, .62);
  color: var(--c-text-soft);
  font-size: 15px;
  line-height: 1.6;
}

.page-faq .faq-steps__num {
  flex: none;
  padding: 4px 9px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-cyan);
}

.page-faq .faq-steps__item + .faq-steps__item::before {
  content: "↓";
  position: absolute;
  top: -15px;
  left: 22px;
  font-size: 13px;
  line-height: 1;
  color: var(--c-coral);
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
  padding: 12px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: rgba(6, 16, 31, .6);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: calc(var(--r-md) - 6px);
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  margin: 10px 2px 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-stone);
}

/* ---------- 收束区 ---------- */
.page-faq .faq-outro {
  margin-top: clamp(36px, 5vw, 62px);
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(80% 120% at 92% 0%, rgba(34, 211, 238, .14), transparent 66%),
    linear-gradient(135deg, rgba(18, 56, 92, .72) 0%, rgba(6, 16, 31, .92) 100%);
}

.page-faq .faq-outro__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--c-paper);
}

.page-faq .faq-outro__note {
  margin: 8px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-stone);
}

.page-faq .faq-routes {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(212px, 1fr));
}

.page-faq .faq-route {
  display: block;
  height: 100%;
  padding: 14px 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: rgba(6, 16, 31, .58);
  text-decoration: none;
  transition: border-color .2s ease, background .2s ease;
}

.page-faq .faq-route:hover,
.page-faq .faq-route:focus-visible {
  border-color: var(--c-cyan);
  background: rgba(34, 211, 238, .1);
}

.page-faq .faq-route__k {
  display: block;
  margin-bottom: 6px;
  font-size: var(--fs-label);
  letter-spacing: .12em;
  color: var(--c-cyan);
}

.page-faq .faq-route__t {
  display: block;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-faq .faq-route__d {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  line-height: 1.62;
  color: var(--c-stone);
}

.page-faq .faq-contact {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--c-line);
  display: grid;
  gap: 8px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
}

.page-faq .faq-contact__k {
  min-width: 46px;
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--c-stone);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(30px, 3.4vw, 48px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

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

  .page-faq .faq-index__link {
    white-space: normal;
  }

  .page-faq .faq-item__q {
    padding: 17px 22px;
    font-size: 17px;
  }

  .page-faq .faq-item__a {
    margin: 0 22px;
    padding: 15px 0 20px;
  }

  .page-faq .faq-steps__item {
    padding: 16px 20px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-group__title {
    font-size: clamp(30px, 2.6vw, 38px);
  }
}

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