.page-faq {
  --faq-rail: 244px;
  --faq-text: rgba(238, 241, 247, .82);
  --faq-accent: var(--cyan);
  --faq-accent-soft: rgba(53, 224, 214, .34);
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-faq .crumb {
  margin: 0;
  padding-top: clamp(18px, 3vw, 28px);
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px) 0 clamp(22px, 3.5vw, 40px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(880px 420px at 84% -18%, rgba(53, 224, 214, .17), transparent 62%),
    radial-gradient(680px 340px at 2% 118%, rgba(255, 162, 58, .13), transparent 60%);
  pointer-events: none;
}

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

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(32px, 6.6vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 10px 0 0;
  max-width: 20ch;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin-top: 16px;
  max-width: 62ch;
  color: var(--faq-text);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
}

.page-faq .faq-hero__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 22px;
  font-size: 13px;
  color: var(--steel);
}

.page-faq .faq-hero__legend .legend__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-hero__legend .legend__swatch {
  width: 18px;
  height: 4px;
  border-radius: 2px;
  flex: none;
}

/* ---------- 速查卡片 ---------- */
.page-faq .faq-quick {
  padding-bottom: clamp(30px, 4.5vw, 56px);
}

.page-faq .quick-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .quick-card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(165deg, rgba(20, 27, 61, .92), rgba(11, 16, 38, .74));
  box-shadow: var(--shadow-card);
  transition: border-color .2s ease, transform .2s ease;
}

.page-faq .quick-card:hover {
  border-color: var(--line-2);
}

.page-faq .quick-card__q {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .quick-card__q::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--cyan);
  vertical-align: middle;
}

.page-faq .quick-card__a {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-spy {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-spy .spy-nav__link {
  flex: none;
  padding: 8px 12px;
  font-family: var(--font-num);
  font-size: 12.5px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--steel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-faq .faq-spy .spy-nav__link:hover,
.page-faq .faq-spy .spy-nav__link[aria-current="true"] {
  color: var(--paper);
  background: rgba(53, 224, 214, .1);
  border-color: var(--faq-accent-soft);
}

/* ---------- 分组画板 ---------- */
.page-faq .faq-group {
  position: relative;
  padding: clamp(18px, 3vw, 28px);
  margin-bottom: clamp(16px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(20, 27, 61, .9), rgba(11, 16, 38, .78));
  box-shadow: var(--shadow-card);
}

.page-faq .faq-group--cyan { --faq-accent: var(--cyan); --faq-accent-soft: rgba(53, 224, 214, .34); }
.page-faq .faq-group--amber { --faq-accent: var(--amber); --faq-accent-soft: rgba(255, 162, 58, .36); }
.page-faq .faq-group--violet { --faq-accent: var(--violet-soft); --faq-accent-soft: rgba(158, 139, 242, .38); }
.page-faq .faq-group--wine { --faq-accent: var(--wine-soft); --faq-accent-soft: rgba(232, 99, 138, .38); }

.page-faq .section-mark {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.page-faq .section-mark__no {
  font-family: var(--font-num);
  font-size: clamp(26px, 4.4vw, 36px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--faq-accent);
}

.page-faq .section-mark .bar {
  width: 4px;
  min-height: 40px;
  align-self: stretch;
  border-radius: 2px;
  flex: none;
}

.page-faq .section-mark__body {
  min-width: 0;
}

.page-faq .section-mark__title {
  margin: 0 0 5px;
  font-family: var(--font-head);
  font-size: clamp(21px, 3.2vw, 28px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .section-mark__desc {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  display: block;
}

.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(11, 16, 38, .55);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color .2s ease;
}

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

.page-faq .qa[open] {
  border-color: var(--faq-accent-soft);
  background: rgba(11, 16, 38, .82);
}

.page-faq .qa__q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 17px;
  line-height: 1.4;
  letter-spacing: -0.005em;
  color: var(--paper);
}

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

.page-faq .qa__q::after {
  content: "";
  flex: none;
  margin-left: auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--faq-accent);
  border-bottom: 2px solid var(--faq-accent);
  transform: rotate(45deg);
  transition: transform .22s ease;
}

.page-faq .qa[open] .qa__q::after {
  transform: rotate(-135deg);
}

.page-faq .qa__a {
  padding: 0 16px 16px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
  color: var(--faq-text);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .qa__a p {
  margin: 0;
}

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

.page-faq .qa__a a:hover {
  color: var(--amber);
}

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

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

.page-faq .faq-figure__cap {
  margin-top: 10px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--steel);
}

.page-faq .media-frame {
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

/* ---------- 结尾行动区 ---------- */
.page-faq .faq-cta {
  padding-top: clamp(28px, 4.5vw, 48px);
}

.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: clamp(22px, 3.4vw, 36px);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-card);
  background:
    linear-gradient(120deg, rgba(255, 162, 58, .13), rgba(11, 16, 38, .2) 55%),
    var(--ink-2);
  box-shadow: var(--shadow-float);
}

.page-faq .faq-cta__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-text);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: center;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .quick-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-spy {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-spy .spy-nav__link {
    white-space: normal;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    border-left: 2px solid var(--line);
    border-top: none;
    border-right: none;
    border-bottom: none;
  }

  .page-faq .faq-spy .spy-nav__link:hover,
  .page-faq .faq-spy .spy-nav__link[aria-current="true"] {
    border-left-color: var(--faq-accent);
  }

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

  .page-faq .quick-grid > :nth-child(3n + 2) {
    margin-top: 14px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-group--split .faq-group__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(20px, 3vw, 34px);
    align-items: start;
  }
}

/* 窄屏兜底 */
@media (max-width: 480px) {
  .page-faq .faq-hero h1 {
    max-width: none;
  }

  .page-faq .qa__q {
    font-size: 16px;
    padding: 13px 14px;
  }

  .page-faq .qa__a {
    padding: 12px 14px 15px;
  }

  .page-faq .faq-cta__actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q::after,
  .page-faq .quick-card,
  .page-faq .faq-spy .spy-nav__link {
    transition: none;
  }
}