.page-faq {
  background-image: repeating-linear-gradient(115deg, rgba(232, 244, 255, 0.028) 0 1px, transparent 1px 16px);
  padding-bottom: 48px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 24px 0 42px;
  overflow: hidden;
  border-bottom: 2px solid var(--line-soft);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -140px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle at center, rgba(127, 219, 255, 0.18), rgba(255, 106, 26, 0.1) 46%, transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero .shell {
  position: relative;
}

.page-faq .faq-hero__eyebrow {
  margin: 16px 0 10px;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--ice);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  max-width: 18em;
  font-size: clamp(1.85rem, 6.2vw, 3.4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero__dek {
  margin: 0;
  max-width: 64ch;
  color: var(--mist);
  font-size: 0.98rem;
  line-height: 1.8;
}

.page-faq .faq-facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 10px;
}

.page-faq .faq-facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 13px 14px;
  border: 2px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(11, 42, 74, 0.62);
  transition: border-color var(--speed) var(--ease);
}

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

.page-faq .faq-facts__num {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-facts__unit {
  margin-left: 2px;
  font-size: 0.85rem;
  color: var(--amber);
}

.page-faq .faq-facts li > span:last-child {
  font-size: 0.82rem;
  color: var(--mist);
  line-height: 1.4;
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 30px;
  padding: 40px 0 64px;
}

.page-faq .faq-side {
  display: grid;
  gap: 18px;
  align-content: start;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  border: 2px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(11, 42, 74, 0.92), rgba(6, 26, 47, 0.94));
  box-shadow: var(--hard-soft);
  padding: 18px 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--ice);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-index__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  color: var(--white);
  font-size: 0.9rem;
  text-decoration: none;
  transition: background var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: rgba(14, 76, 138, 0.55);
  border-color: var(--line-strong);
}

.page-faq .faq-index__list a:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

.page-faq .faq-index__num {
  font-size: 0.76rem;
  color: var(--orange);
  font-weight: 700;
}

/* ---------- 侧栏提示卡 ---------- */
.page-faq .faq-ask {
  border: 2px solid rgba(255, 106, 26, 0.5);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(255, 106, 26, 0.18), rgba(6, 26, 47, 0.94) 62%);
  padding: 18px 16px;
}

.page-faq .faq-ask__title {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-ask__text {
  margin: 0 0 14px;
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 右侧问答组 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 46px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 110px;
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  align-items: baseline;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--line-soft);
  transition: border-color var(--speed) var(--ease);
}

.page-faq .faq-group:target .faq-group__head {
  border-bottom-color: var(--orange);
}

.page-faq .faq-group__num {
  grid-row: span 2;
  font-size: 1rem;
  font-weight: 700;
  color: var(--orange);
  line-height: 1.2;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--mist);
}

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

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  position: relative;
  border: 2px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(170deg, rgba(11, 42, 74, 0.88), rgba(6, 26, 47, 0.95));
  box-shadow: var(--hard-soft);
  overflow: hidden;
  transition: border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

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

.page-faq .faq-item[open] {
  border-color: rgba(255, 106, 26, 0.62);
  box-shadow: var(--hard), 0 0 24px rgba(255, 106, 26, 0.14);
}

.page-faq .faq-item[open]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--orange), var(--amber));
}

.page-faq .faq-item__q {
  display: block;
  position: relative;
  padding: 15px 48px 15px 20px;
  list-style: none;
  cursor: pointer;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--ice);
  transition: color var(--speed) var(--ease);
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: -4px;
  border-radius: var(--r-md);
}

.page-faq .faq-item__a {
  margin: 0 20px;
  padding: 14px 0 18px;
  border-top: 1px dashed var(--line-soft);
  background: linear-gradient(180deg, rgba(255, 106, 26, 0.06), transparent 64px);
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

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

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

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 18px;
}

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

/* ---------- 客服卡片 ---------- */
.page-faq .faq-contact {
  margin-bottom: 18px;
  padding: 22px 20px;
  border: 2px solid var(--line-strong);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, rgba(14, 76, 138, 0.55), rgba(6, 26, 47, 0.96));
  box-shadow: var(--hard);
}

.page-faq .faq-contact__label {
  margin: 0 0 10px;
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--ice);
}

.page-faq .faq-contact__mail {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 4vw, 1.45rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--amber);
  text-decoration: none;
  word-break: break-all;
}

.page-faq .faq-contact__mail:hover,
.page-faq .faq-contact__mail:focus-visible {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-faq .faq-contact__mail:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 4px;
  border-radius: var(--r-sm);
}

.page-faq .faq-contact__note {
  margin: 14px 0 16px;
  max-width: 52ch;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 30px 0 52px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 254px minmax(0, 1fr);
    gap: 46px;
    align-items: start;
    padding: 52px 0 80px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-item__q {
    padding: 17px 54px 17px 24px;
    font-size: 1.02rem;
  }

  .page-faq .faq-item__a {
    margin: 0 24px;
    padding: 16px 24px 20px 0;
    padding-left: 0;
  }

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

@media (max-width: 420px) {
  .page-faq .faq-item__q {
    padding: 14px 44px 14px 16px;
    font-size: 0.94rem;
  }

  .page-faq .faq-item__a {
    margin: 0 16px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__list a,
  .page-faq .faq-item,
  .page-faq .faq-facts li,
  .page-faq .faq-item__q::after,
  .page-faq .faq-group__head {
    transition: none;
  }
}