.page-faq {
  --faq-ink-soft: #C9D4E1;
  background: var(--bg);
  color: var(--paper);
  padding-bottom: 72px;
}

.page-faq .faq-shell {
  width: var(--shell);
  margin-inline: auto;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 42px;
  background:
    radial-gradient(112% 84% at 86% 0%, rgba(53, 224, 224, .18), transparent 60%),
    radial-gradient(88% 70% at 8% 100%, rgba(255, 122, 47, .12), transparent 66%),
    linear-gradient(180deg, rgba(7, 16, 31, 0), rgba(14, 27, 46, .78) 62%, rgba(7, 16, 31, 0));
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--orange) 58%, transparent);
  transform: skewY(-0.4deg);
  transform-origin: left center;
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--slate);
}

.page-faq .breadcrumbs a {
  color: var(--slate);
  text-decoration: none;
}

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

.page-faq .faq-hero .eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 14px;
  max-width: 22em;
  font-family: var(--font-display);
  font-size: clamp(27px, 5.4vw, 44px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-faq .faq-hero__tags .pill {
  text-decoration: none;
}

.page-faq .faq-hero__media {
  margin: 28px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow);
}

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

/* ---------- 主栅格 ---------- */
.page-faq .faq-body {
  padding-top: 34px;
}

.page-faq .faq-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  padding: 18px 16px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, rgba(14, 27, 46, .96), rgba(14, 27, 46, .7));
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--slate);
}

.page-faq .faq-index__group {
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-index__group:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-index__glink {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--cyan);
  text-decoration: none;
}

.page-faq .faq-index__glink:hover {
  color: var(--orange);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--slate);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 6px 0 0;
  padding: 0 0 0 14px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-index__list a {
  display: block;
  padding: 3px 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--slate);
  text-decoration: none;
}

.page-faq .faq-index__list a:hover {
  color: var(--paper);
}

/* ---------- 分组色带 ---------- */
.page-faq .faq-group {
  margin-top: 40px;
  scroll-margin-top: 92px;
}

.page-faq .faq-group:first-child {
  margin-top: 4px;
}

.page-faq .faq-group__banner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3px 14px;
  padding: 15px 42px 15px 18px;
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius-m) 4px var(--radius-m) var(--radius-m);
  background: linear-gradient(102deg, rgba(53, 224, 224, .2), rgba(14, 27, 46, .72) 62%, transparent);
  clip-path: polygon(0 0, 100% 0, calc(100% - 28px) 100%, 0 100%);
}

.page-faq .faq-group__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__note {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--faq-ink-soft);
}

/* ---------- 信息图 ---------- */
.page-faq .faq-diagram {
  margin: 18px 0 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--panel);
}

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

.page-faq .faq-diagram figcaption {
  padding: 10px 16px 12px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--slate);
}

/* ---------- 问答卡片 ---------- */
.page-faq .qa {
  margin-top: 14px;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, rgba(14, 27, 46, .92), rgba(14, 27, 46, .6));
  scroll-margin-top: 92px;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

.page-faq .qa:hover {
  border-color: rgba(53, 224, 224, .3);
}

.page-faq .qa:target {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 1px rgba(53, 224, 224, .26), var(--shadow);
}

.page-faq .qa__q {
  display: flex;
  gap: 10px;
  margin: 0 0 10px;
  font-size: 16.5px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .qa__q .num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .qa__a {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--paper);
}

.page-faq .qa__tip {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-group--contact .faq-group__banner {
  border-left-color: var(--orange);
  background: linear-gradient(102deg, rgba(255, 122, 47, .22), rgba(14, 27, 46, .72) 62%, transparent);
}

.page-faq .faq-group--contact .faq-group__num {
  color: var(--orange);
}

.page-faq .faq-contact {
  margin-top: 16px;
  padding: 24px 18px 26px;
  border: 1px solid var(--line-warm);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, rgba(255, 122, 47, .13), rgba(14, 27, 46, .78));
  scroll-margin-top: 92px;
}

.page-faq .faq-contact__lead {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
}

.page-faq .faq-contact__label {
  min-width: 72px;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--cyan);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 32px 0 52px;
  }

  .page-faq .faq-index {
    padding: 22px 20px 24px;
  }

  .page-faq .faq-group__banner {
    padding: 18px 54px 18px 22px;
  }

  .page-faq .qa {
    padding: 22px 24px 24px;
  }

  .page-faq .qa__q {
    font-size: 17.5px;
  }

  .page-faq .faq-contact {
    padding: 28px 26px 30px;
  }

  .page-faq .faq-group {
    margin-top: 48px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-board {
    grid-template-columns: 272px minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h, 72px) + 18px);
    max-height: calc(100vh - var(--header-h, 72px) - 44px);
    overflow-y: auto;
    scrollbar-width: thin;
  }

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

  .page-faq .faq-diagram {
    margin-top: 22px;
  }
}

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