.page-faq {
  --faq-line: rgba(232, 235, 230, .14);
  --faq-line-strong: rgba(232, 235, 230, .26);
  --faq-flame-wash: rgba(255, 90, 31, .10);
  --faq-panel: linear-gradient(160deg, rgba(18, 51, 40, .82), rgba(11, 36, 28, .35));
  --faq-sand-ink: #16302A;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 3vw, 30px) 0 clamp(36px, 6vw, 64px);
  background:
    radial-gradient(120% 88% at 88% 0%, rgba(255, 90, 31, .18), transparent 58%),
    radial-gradient(90% 70% at 0% 100%, rgba(192, 138, 78, .12), transparent 60%),
    var(--ink-900);
}

.page-faq .faq-hero-frame {
  position: relative;
  margin-top: 18px;
  padding: clamp(20px, 4vw, 44px);
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius-xl);
  background: var(--faq-panel);
  box-shadow: inset 0 1px 0 rgba(232, 235, 230, .06);
}

.page-faq .faq-hero-frame::before,
.page-faq .faq-hero-frame::after {
  content: "";
  position: absolute;
  width: 46px;
  height: 46px;
  border: 1px solid var(--copper-soft);
  pointer-events: none;
}

.page-faq .faq-hero-frame::before {
  top: 12px;
  left: 12px;
  border-right: 0;
  border-bottom: 0;
  border-top-left-radius: var(--radius-md);
}

.page-faq .faq-hero-frame::after {
  right: 12px;
  bottom: 12px;
  border-left: 0;
  border-top: 0;
  border-bottom-right-radius: var(--radius-md);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--copper);
  text-transform: uppercase;
}

.page-faq .faq-h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 58px);
  line-height: 1.16;
  letter-spacing: .04em;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-lead {
  max-width: 68ch;
  margin: 0 0 22px;
  color: var(--paper);
  opacity: .9;
}

.page-faq .faq-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero-media {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
  margin: 0;
  aspect-ratio: 3 / 2;
}

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

.page-faq .media-caption {
  display: block;
  padding: 10px 14px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mid);
  background: rgba(11, 36, 28, .7);
  border-top: 1px solid var(--faq-line);
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: center;
  }
}

/* ---------- 两列主体 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  padding: clamp(34px, 6vw, 72px) var(--gutter) clamp(48px, 8vw, 96px);
}

@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: 246px minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 左侧分类锚点 ---------- */
.page-faq .faq-rail {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
  background: var(--ink-800);
  padding: 16px;
}

.page-faq .faq-rail-head {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--copper);
}

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

.page-faq .faq-rail-list > li {
  flex: 0 0 auto;
}

.page-faq .faq-rail-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  background: rgba(232, 235, 230, .05);
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-rail-link:hover {
  border-color: var(--copper-soft);
  background: rgba(232, 235, 230, .1);
}

.page-faq .faq-rail-link[aria-current="true"] {
  border-color: var(--flame);
  background: var(--faq-flame-wash);
  color: var(--flame);
}

.page-faq .faq-rail-num {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  color: var(--copper);
}

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

.page-faq .faq-rail-count {
  font-family: var(--font-num);
  font-size: 11px;
  color: var(--mid);
}

.page-faq .faq-rail-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mid);
}

@media (min-width: 900px) {
  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-rail-list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail-list > li {
    flex: 1 1 auto;
  }

  .page-faq .faq-rail-link {
    justify-content: flex-start;
  }

  .page-faq .faq-rail-label {
    flex: 1 1 auto;
  }
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

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

.page-faq .faq-group + .faq-group {
  margin-top: clamp(42px, 6vw, 76px);
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 14px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group-num {
  grid-row: span 2;
  font-family: var(--font-num);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--flame);
  letter-spacing: .04em;
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3vw, 30px);
  letter-spacing: .06em;
  color: var(--paper);
}

.page-faq .faq-group-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mid);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
  background: var(--ink-800);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.page-faq .faq-item:hover {
  border-color: var(--copper-soft);
}

.page-faq .faq-item[open] {
  border-color: var(--copper-soft);
  box-shadow: inset 3px 0 0 var(--flame);
  background:
    linear-gradient(180deg, var(--faq-flame-wash), transparent 40%),
    var(--ink-800);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 17px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-num {
  flex: 0 0 auto;
  padding-top: 2px;
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  color: var(--copper);
  letter-spacing: .04em;
}

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

.page-faq .faq-q-text {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-toggle {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  border: 1px solid var(--faq-line-strong);
  border-radius: 50%;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-toggle::before {
  content: "";
  position: absolute;
  left: 5px;
  right: 5px;
  top: 50%;
  height: 1.5px;
  background: var(--mid);
  transform: translateY(-50%);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-toggle::after {
  content: "";
  position: absolute;
  top: 5px;
  bottom: 5px;
  left: 50%;
  width: 1.5px;
  background: var(--mid);
  transform: translateX(-50%);
  transition: opacity var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-toggle {
  border-color: var(--flame);
  transform: rotate(180deg);
}

.page-faq .faq-item[open] .faq-toggle::before {
  background: var(--flame);
}

.page-faq .faq-item[open] .faq-toggle::after {
  opacity: 0;
}

.page-faq .faq-a {
  margin: 0 14px 14px;
  padding: 15px 17px;
  border-radius: var(--radius-md);
  background: var(--sand);
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--faq-sand-ink);
}

.page-faq .faq-a a {
  color: var(--flame-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-a a:hover {
  color: var(--ink-900);
}

/* ---------- 周期图块 ---------- */
.page-faq .faq-cycle {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 20px;
  padding: clamp(16px, 3vw, 26px);
  border: 1px solid var(--copper-soft);
  border-radius: var(--radius-xl);
  background: linear-gradient(140deg, rgba(30, 58, 63, .6), rgba(11, 36, 28, .92));
}

.page-faq .faq-cycle-media {
  margin: 0;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-700);
}

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

.page-faq .faq-cycle-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-faq .faq-cycle-text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper);
  opacity: .86;
}

@media (min-width: 720px) {
  .page-faq .faq-cycle {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: center;
    gap: 26px;
  }
}

/* ---------- 支持收口 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  align-items: center;
  justify-content: space-between;
  margin-top: 22px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(90% 140% at 100% 0%, rgba(255, 90, 31, .16), transparent 62%),
    var(--ink-800);
}

.page-faq .faq-cta-copy {
  min-width: 0;
  flex: 1 1 260px;
}

.page-faq .faq-cta-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.4vw, 24px);
  letter-spacing: .05em;
  color: var(--paper);
}

.page-faq .faq-cta-text {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mid);
}

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

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 520px) {
  .page-faq .faq-q {
    padding: 15px 16px;
    gap: 10px;
  }

  .page-faq .faq-q-text {
    font-size: 15.5px;
  }

  .page-faq .faq-a {
    margin: 0 10px 12px;
    padding: 13px 14px;
  }

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

  .page-faq .faq-hero-frame::before,
  .page-faq .faq-hero-frame::after {
    width: 28px;
    height: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-toggle,
  .page-faq .faq-q-text,
  .page-faq .faq-rail-link {
    transition-duration: .01ms;
  }
}