.page-faq {
  --faq-rail-w: 250px;
}

/* ---------- 面包屑微调 ---------- */
.page-faq .breadcrumbs {
  padding-top: clamp(20px, 4vw, 40px);
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-7);
}

.page-faq .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-mute);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4vw, 44px) 0 clamp(30px, 6vw, 72px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -8%;
  width: min(520px, 68vw);
  height: min(520px, 68vw);
  border-radius: 50%;
  background: radial-gradient(circle at 68% 32%, rgba(76, 74, 140, .3), transparent 64%);
  pointer-events: none;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  align-items: start;
}

.page-faq .faq-hero__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(32px, 6.4vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--c-paper);
  margin: 12px 0 18px;
  max-width: 15em;
}

.page-faq .faq-hero__lede {
  max-width: 34em;
  margin: 0;
}

.page-faq .faq-hero__panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(18px, 3vw, 28px);
}

.page-faq .faq-hero__panel-eyebrow {
  margin: 0;
  font-size: var(--fs-7);
  letter-spacing: .14em;
  color: var(--c-gold);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-facts li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-facts__num {
  flex: 0 0 auto;
  font-size: 22px;
  line-height: 1;
  color: var(--c-gold);
  letter-spacing: .04em;
}

.page-faq .faq-facts__label {
  font-size: var(--fs-6);
  line-height: 1.55;
  color: var(--c-mute);
}

/* ---------- 主体：左栏索引 + 右栏问答 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-faq .faq-rail {
  border-left: 2px solid var(--signal-line);
  padding-left: 16px;
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: .16em;
  color: var(--c-gold);
}

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

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--fs-5);
  color: var(--c-paper);
  text-decoration: none;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-rail__link .mono {
  font-size: var(--fs-7);
  letter-spacing: .08em;
  color: var(--c-mute);
  transition: color .2s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: var(--c-near);
  border-color: var(--line-strong);
  outline: none;
}

.page-faq .faq-rail__link:hover .mono,
.page-faq .faq-rail__link:focus-visible .mono {
  color: var(--c-signal);
}

.page-faq .faq-rail__note {
  margin: 16px 0 0;
  font-size: var(--fs-7);
  line-height: 1.7;
  color: var(--c-mute);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(36px, 6vw, 64px);
  scroll-margin-top: 116px;
}

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

.page-faq .faq-group__head {
  border-left: 2px solid var(--c-gold);
  padding-left: 16px;
  margin-bottom: 12px;
}

.page-faq .faq-group__num {
  display: block;
  font-size: var(--fs-7);
  letter-spacing: .16em;
  color: var(--c-gold);
  margin-bottom: 6px;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--c-paper);
}

.page-faq .faq-group__intro {
  margin: 0 0 18px;
  max-width: 42em;
  font-size: var(--fs-6);
  line-height: 1.7;
  color: var(--c-mute);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color .2s var(--ease);
}

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

.page-faq .qa[open] {
  border-color: var(--signal-line);
}

.page-faq .qa__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  background: var(--c-near);
  transition: background .22s var(--ease);
}

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

.page-faq .qa__head:hover {
  background: #1a3b4c;
}

.page-faq .qa__head:focus-visible {
  outline: 2px solid var(--c-signal);
  outline-offset: -2px;
}

.page-faq .qa[open] > .qa__head {
  background: var(--c-green);
}

.page-faq .qa__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-mute);
  transition: color .22s var(--ease);
}

.page-faq .qa[open] .qa__num {
  color: var(--c-gold);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  font-size: var(--fs-5);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--c-tide);
  transition: transform .24s var(--ease), background .24s var(--ease);
}

.page-faq .qa__mark::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .qa__mark::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

.page-faq .qa[open] .qa__mark::before {
  background: var(--c-signal);
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
}

.page-faq .qa__body {
  padding: 16px 18px 20px;
  border-top: 1px solid var(--line);
  background: rgba(11, 31, 42, .5);
  font-size: var(--fs-5);
  line-height: 1.75;
  color: var(--c-paper);
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 42em;
}

.page-faq .qa__samples {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

/* ---------- 术语对照 ---------- */
.page-faq .faq-glossary__grid {
  align-items: start;
}

.page-faq .faq-glossary .eyebrow {
  color: var(--c-wine);
}

.page-faq .faq-glossary .section-title {
  color: var(--c-ink);
  margin: 10px 0 12px;
}

.page-faq .faq-glossary__lede {
  margin: 0 0 18px;
  max-width: 38em;
  font-size: var(--fs-6);
  line-height: 1.7;
  color: rgba(18, 38, 47, .72);
}

.page-faq .glossary__wrap {
  border: 1px solid rgba(18, 38, 47, .14);
  border-radius: var(--radius-md);
  overflow-x: auto;
  background: var(--c-paper);
}

.page-faq .glossary {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: var(--fs-6);
}

.page-faq .glossary__caption {
  caption-side: top;
  text-align: left;
  padding: 10px 14px 0;
  font-size: var(--fs-7);
  color: rgba(18, 38, 47, .6);
}

.page-faq .glossary th {
  text-align: left;
  padding: 12px 14px;
  background: var(--c-sand);
  color: var(--c-ink);
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  font-weight: 600;
  letter-spacing: .12em;
}

.page-faq .glossary td {
  padding: 13px 14px;
  border-top: 1px solid rgba(18, 38, 47, .12);
  vertical-align: top;
  line-height: 1.6;
  color: var(--c-ink);
}

.page-faq .glossary td:first-child {
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: .04em;
  white-space: nowrap;
}

.page-faq .glossary a {
  color: var(--c-ink);
  text-decoration: underline;
  text-decoration-color: var(--c-signal);
  text-underline-offset: 3px;
  transition: color .2s var(--ease), text-decoration-color .2s var(--ease);
}

.page-faq .glossary a:hover,
.page-faq .glossary a:focus-visible {
  color: var(--c-wine);
  text-decoration-color: var(--c-wine);
}

.page-faq .faq-glossary__figure {
  margin: 0;
}

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

.page-faq .faq-glossary__figure .media-frame__caption {
  color: rgba(18, 38, 47, .68);
}

/* ---------- 底部通栏 ---------- */
.page-faq .faq-cta {
  padding: 0 0 clamp(48px, 8vw, 96px);
}

.page-faq .faq-cta__card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  padding: clamp(26px, 5vw, 56px);
}

.page-faq .faq-cta__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-cta__card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(11, 31, 42, .5) 0%, rgba(11, 31, 42, .93) 76%);
}

.page-faq .faq-cta__content {
  max-width: 640px;
}

.page-faq .faq-cta__title {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-faq .faq-cta__text {
  margin: 0 0 20px;
  max-width: 40em;
  font-size: var(--fs-6);
  line-height: 1.75;
  color: var(--c-mute);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-glossary__figure {
    margin-top: 8px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero__panel {
    margin-top: clamp(24px, 4vw, 56px);
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, var(--faq-rail-w)) minmax(0, 1fr);
    gap: clamp(40px, 6vw, 88px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 112px;
    align-self: start;
  }

  .page-faq .faq-glossary__figure {
    margin-top: clamp(28px, 5vw, 72px);
  }
}

@media (max-width: 480px) {
  .page-faq .qa__head {
    gap: 10px;
    padding: 14px;
  }

  .page-faq .qa__q {
    font-size: var(--fs-6);
  }

  .page-faq .qa__num {
    font-size: 10px;
  }

  .page-faq .glossary {
    min-width: 420px;
  }
}