.page-faq {
  --faq-sticky-top: calc(var(--rail-h) + var(--bar-h) + 20px);
  --faq-measure: 38em;
  overflow-x: clip;
  background: var(--ink);
  color: var(--text);
}

.page-faq .breadcrumb {
  padding-top: clamp(14px, 2.5vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 58px) 0 clamp(34px, 5vw, 68px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -12% -20% auto -20%;
  height: 128%;
  background: linear-gradient(112deg, var(--grad-a) 0%, rgba(11, 31, 24, 0.6) 42%, rgba(6, 17, 13, 0) 74%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 14%;
  right: -8%;
  width: 48%;
  height: 2px;
  background: linear-gradient(90deg, rgba(200, 255, 77, 0.7), rgba(200, 255, 77, 0));
  transform: rotate(-12deg);
  transform-origin: right center;
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero-copy .eyebrow {
  margin: 0 0 14px;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 62px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-lede {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 40em;
  color: var(--text-2);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

.page-faq .faq-quick {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-quick a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.3;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-quick a:hover,
.page-faq .faq-quick a:focus-visible {
  border-color: var(--lime);
  color: var(--text);
  transform: translateY(-2px);
}

.page-faq .faq-quick .mono {
  color: var(--lime);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-faq .faq-hero-media {
  margin: 0;
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.68) contrast(1.06);
}

/* ---------- 双栏索引 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  padding-bottom: clamp(40px, 7vw, 88px);
}

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

.page-faq .faq-axis-title {
  margin: 0 0 12px;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.page-faq .faq-axis-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .faq-axis-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.35;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-axis-num {
  color: var(--amber);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-faq .faq-axis-link:hover,
.page-faq .faq-axis-link:focus-visible {
  color: var(--text);
  border-color: var(--lime);
}

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

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--rail-h) + var(--bar-h) + 18px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 62px);
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  align-items: baseline;
}

.page-faq .faq-group-num {
  color: var(--lime);
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1;
  letter-spacing: 0.04em;
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 27px);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-faq .faq-group-note {
  grid-column: 1 / -1;
  margin: 10px 0 0;
  max-width: 46em;
  color: var(--text-3);
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  margin-top: 14px;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-q {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  color: var(--text);
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 500;
  line-height: 1.6;
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-q:hover {
  color: var(--lime);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-faq .faq-icon {
  position: relative;
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  margin-top: 6px;
}

.page-faq .faq-icon::before,
.page-faq .faq-icon::after {
  content: "";
  position: absolute;
  background: var(--lime);
}

.page-faq .faq-icon::before {
  left: 0;
  top: 5px;
  width: 12px;
  height: 2px;
}

.page-faq .faq-icon::after {
  left: 5px;
  top: 0;
  width: 2px;
  height: 12px;
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

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

.page-faq .faq-item[open] .faq-q {
  color: var(--lime);
}

.page-faq .faq-a {
  max-width: var(--faq-measure);
  padding: 0 0 20px 24px;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.8;
}

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

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

.page-faq .faq-a a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 77, 0.4);
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  border-bottom-color: var(--lime);
}

.page-faq .faq-a .tag {
  margin-right: 6px;
  vertical-align: 1px;
}

/* ---------- 订阅区图文块 ---------- */
.page-faq .faq-inline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 22px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-faq .faq-inline figure {
  margin: 0;
}

.page-faq .faq-inline img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  filter: saturate(0.7);
}

.page-faq .faq-inline-note strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
}

.page-faq .faq-inline-note p {
  margin: 0;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 联系信息 ---------- */
.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 18px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-contact-cell {
  background: var(--panel);
  padding: 16px 18px;
}

.page-faq .faq-contact-label {
  margin: 0 0 6px;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.page-faq .faq-contact-cell a,
.page-faq .faq-contact-cell span {
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-cell a:hover,
.page-faq .faq-contact-cell a:focus-visible {
  color: var(--lime);
}

/* ---------- 底部提示条 ---------- */
.page-faq .faq-tip {
  margin-top: clamp(34px, 5vw, 60px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  background: linear-gradient(118deg, rgba(242, 184, 75, 0.12) 0%, rgba(11, 31, 24, 0.92) 58%);
}

.page-faq .faq-tip-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 23px);
  font-weight: 900;
  line-height: 1.3;
}

.page-faq .faq-tip p {
  margin: 0 0 16px;
  max-width: 46em;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.78;
}

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

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 4vw, 60px);
  }

  .page-faq .faq-shell {
    grid-template-columns: minmax(160px, 210px) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 76px);
    align-items: start;
  }

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

  .page-faq .faq-axis-nav {
    display: grid;
    gap: 0;
  }

  .page-faq .faq-axis-link {
    display: flex;
    border: 0;
    border-left: 2px solid transparent;
    padding: 11px 0 11px 14px;
  }

  .page-faq .faq-axis-link:hover,
  .page-faq .faq-axis-link:focus-visible {
    border-left-color: var(--line);
  }

  .page-faq .faq-axis-link[aria-current="true"] {
    color: var(--lime);
    border-left-color: var(--lime);
    background: linear-gradient(90deg, rgba(200, 255, 77, 0.12), rgba(200, 255, 77, 0) 82%);
  }

  .page-faq .faq-axis-link[aria-current="true"] .faq-axis-num {
    color: var(--lime);
  }

  .page-faq .faq-inline {
    grid-template-columns: minmax(0, 180px) minmax(0, 1fr);
    align-items: center;
    gap: 24px;
    padding: 18px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick a,
  .page-faq .faq-axis-link,
  .page-faq .faq-q,
  .page-faq .faq-icon::after {
    transition: none;
  }

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