.page-faq {
  --faq-line: rgba(166, 168, 190, .22);
  --faq-line-soft: rgba(166, 168, 190, .12);
  --faq-panel: rgba(42, 27, 87, .55);
  --faq-panel-strong: rgba(42, 27, 87, .92);
  background: var(--ink);
  color: var(--mist);
}

.page-faq .section {
  padding-block: clamp(2.5rem, 5vw, 4.5rem);
}

.page-faq .crumbs {
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .crumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color .2s var(--ease);
}

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

.page-faq .crumbs [aria-current="page"] { color: var(--amber); }

/* HERO */
.page-faq .faq-hero {
  padding-block: clamp(2rem, 4vw, 3.5rem) clamp(2rem, 4vw, 3.5rem);
  background:
    radial-gradient(120% 80% at 8% 0%, rgba(124, 226, 60, .18), transparent 55%),
    radial-gradient(90% 60% at 92% 100%, rgba(47, 214, 196, .12), transparent 60%),
    var(--ink);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: 1.25rem;
}

.page-faq .faq-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.4vw, 4rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  max-width: 22ch;
  margin: 0;
}

.page-faq .faq-lede {
  font-size: 17px;
  line-height: 1.75;
  max-width: 62ch;
  color: rgba(241, 244, 238, .82);
}

.page-faq .faq-meta {
  list-style: none;
  padding: 1.25rem 0 0;
  margin: .5rem 0 0;
  border-top: 1px solid var(--faq-line);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem clamp(1.5rem, 4vw, 3rem);
}

.page-faq .faq-meta li {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-meta strong {
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: -.02em;
  color: var(--amber);
  line-height: 1;
}

/* 通用区块标题 */
.page-faq .faq-section-head {
  display: grid;
  gap: .75rem;
  max-width: 64ch;
  margin: 0 0 clamp(1.5rem, 3vw, 2.5rem);
}

.page-faq .faq-section-head .h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.2vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -.02em;
  margin: 0;
}

.page-faq .faq-section-head .lede {
  font-size: 17px;
  line-height: 1.75;
  color: rgba(241, 244, 238, .8);
  margin: 0;
}

/* 版本对照 */
.page-faq .faq-version-media {
  margin: 0 0 clamp(1.75rem, 3.5vw, 2.5rem);
  border-radius: clamp(20px, 2.6vw, 28px);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: linear-gradient(150deg, rgba(42, 27, 87, .9), rgba(23, 14, 51, .9));
}

.page-faq .version-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-faq .version-col {
  border-radius: clamp(20px, 2.4vw, 26px);
  padding: clamp(1.25rem, 2.6vw, 2rem);
  border: 1px solid var(--faq-line);
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-faq .version-col--current {
  background: linear-gradient(155deg, rgba(124, 226, 60, .14), rgba(42, 27, 87, .92) 70%);
  border-color: rgba(124, 226, 60, .38);
}

.page-faq .version-col--archive {
  background: rgba(42, 27, 87, .78);
  border-color: rgba(107, 86, 62, .58);
}

.page-faq .version-col-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .75rem;
  padding-bottom: .85rem;
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .version-year {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .version-col--current .version-year { color: var(--green); }

.page-faq .version-col-body {
  display: grid;
  gap: 1rem;
}

.page-faq .version-col-body > p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(241, 244, 238, .84);
}

.page-faq .version-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
}

.page-faq .version-list li {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1rem;
  padding: .65rem 0;
  border-top: 1px dashed var(--faq-line-soft);
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .version-list li:first-child { border-top: none; padding-top: .2rem; }

.page-faq .v-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .v-val { color: var(--mist); }

/* 分组索引 */
.page-faq .faq-groups { padding-top: clamp(1.5rem, 3vw, 2rem); }

.page-faq .faq-index {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .65rem;
  padding: 1rem 0 1.5rem;
  border-top: 1px solid var(--faq-line);
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.page-faq .faq-index a {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .4rem .95rem .4rem .7rem;
  border-radius: var(--radius-pill);
  background: var(--faq-panel);
  color: var(--mist);
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-index a:hover {
  border-color: var(--green);
  color: var(--amber);
  background: var(--faq-panel-strong);
}

.page-faq .seed-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(124, 226, 60, .85);
  flex-shrink: 0;
}

/* 分组块 */
.page-faq .group-block {
  padding-block: clamp(1.5rem, 3vw, 2.5rem);
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: 6rem;
}

.page-faq .group-block:first-of-type {
  padding-top: 0;
  border-top: none;
}

.page-faq .group-head {
  display: flex;
  align-items: center;
  gap: .85rem;
  margin-bottom: 1.25rem;
}

.page-faq .group-seed {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--green);
  color: var(--seed);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .02em;
  flex-shrink: 0;
}

.page-faq .group-head .h3 {
  flex: 1;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
  letter-spacing: -.01em;
}

.page-faq .group-count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
  flex-shrink: 0;
}

/* 折叠条目 */
.page-faq .faq-list {
  display: grid;
  gap: .5rem;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: 16px;
  background: var(--faq-panel);
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-item[open] {
  background: var(--faq-panel-strong);
  border-color: rgba(124, 226, 60, .38);
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: .85rem;
  padding: 1rem 1.1rem;
  font-size: 16px;
  line-height: 1.55;
  color: var(--mist);
}

.page-faq .faq-item > summary::-webkit-details-marker { display: none; }
.page-faq .faq-item > summary::marker { content: ""; }

.page-faq .faq-item > summary:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: -3px;
  border-radius: 16px;
}

.page-faq .q-mark {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(47, 214, 196, .16);
  transition: background .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-item[open] .q-mark {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 228, 94, .22);
}

.page-faq .q-text { flex: 1; }

.page-faq .q-icon {
  position: relative;
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.page-faq .q-icon::before,
.page-faq .q-icon::after {
  content: "";
  position: absolute;
  background: var(--mist);
  transition: transform .25s var(--ease), background .2s var(--ease);
}

.page-faq .q-icon::before { left: 0; top: 6px; width: 14px; height: 2px; }
.page-faq .q-icon::after  { top: 0; left: 6px; width: 2px; height: 14px; }

.page-faq .faq-item[open] .q-icon::before { background: var(--amber); }
.page-faq .faq-item[open] .q-icon::after  { transform: rotate(90deg); background: var(--amber); }

.page-faq .faq-answer {
  padding: 1rem 1.1rem 1.25rem 2.15rem;
  border-top: 1px solid var(--faq-line-soft);
  display: grid;
  gap: .85rem;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(241, 244, 238, .84);
}

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

.page-faq .faq-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--green);
  padding-left: .7rem;
  border-left: 2px solid var(--green);
}

.page-faq .mono {
  font-family: var(--font-mono);
  font-size: .94em;
  letter-spacing: .06em;
  padding: .08rem .45rem;
  border-radius: 5px;
  background: rgba(47, 214, 196, .16);
  color: var(--cyan);
}

/* 内嵌竖图 */
.page-faq .faq-inline-media {
  margin: clamp(1.5rem, 3vw, 2.5rem) 0 0;
  border-radius: clamp(20px, 2.6vw, 28px);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: linear-gradient(165deg, rgba(42, 27, 87, .9), rgba(23, 14, 51, .9));
}

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

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

.page-faq kbd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(166, 168, 190, .16);
  border: 1px solid rgba(166, 168, 190, .35);
  color: var(--mist);
}

/* 条款引用（雾白纸面） */
.page-faq .faq-cite {
  background: var(--mist);
  color: var(--seed);
}

.page-faq .faq-cite .faq-section-head .h2 { color: var(--seed); }

.page-faq .faq-cite .faq-section-head .lede { color: rgba(11, 7, 20, .72); }

.page-faq .faq-cite .eyebrow { color: var(--green-deep); }

.page-faq .cite-wrap {
  display: grid;
  gap: clamp(1.25rem, 2.5vw, 2rem);
}

.page-faq .cite-pod {
  display: grid;
  gap: 1rem;
  padding: clamp(1.25rem, 2.8vw, 2.25rem);
  border-radius: clamp(20px, 2.6vw, 28px);
  background: rgba(255, 228, 94, .22);
  border: 1px solid rgba(11, 7, 20, .1);
  font-size: 16px;
  line-height: 1.75;
  color: rgba(11, 7, 20, .9);
}

.page-faq .cite-pod p { margin: 0; }

.page-faq .cite-pod .mono {
  background: var(--seed);
  color: var(--amber);
  padding: .12rem .55rem;
  border-radius: 5px;
}

/* 下一步 CTA */
.page-faq .faq-next {
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.page-faq .next-wrap {
  display: grid;
  gap: 1.5rem;
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
  border-radius: clamp(28px, 4vw, 40px);
  background: linear-gradient(160deg, rgba(124, 226, 60, .16), rgba(42, 27, 87, .92) 65%);
  border: 1px solid rgba(124, 226, 60, .3);
  box-shadow: var(--shadow-pod);
}

.page-faq .next-wrap .h2 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.8vw, 2.1rem);
  letter-spacing: -.02em;
  line-height: 1.15;
  margin: .5rem 0 .75rem;
}

.page-faq .next-wrap .lede {
  font-size: 16px;
  line-height: 1.75;
  color: rgba(241, 244, 238, .84);
  max-width: 58ch;
  margin: 0;
}

.page-faq .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* 桌面端布局 */
@media (min-width: 820px) {
  .page-faq .version-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.35rem;
  }

  .page-faq .faq-index {
    padding: 1.15rem 0 1.6rem;
    gap: .55rem .75rem;
  }

  .page-faq .faq-answer {
    padding: 1.1rem 1.4rem 1.4rem 2.3rem;
  }

  .page-faq .faq-item > summary {
    padding: 1.1rem 1.4rem;
  }

  .page-faq .next-wrap {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .next-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-inline-media {
    max-width: 560px;
    margin-left: auto;
  }
}

/* 窄屏保护 */
@media (max-width: 640px) {
  .page-faq .version-list li {
    grid-template-columns: 1fr;
    gap: .2rem;
  }

  .page-faq .faq-answer {
    padding-left: 1.1rem;
  }

  .page-faq .faq-meta strong {
    font-size: 1.4rem;
  }

  .page-faq .group-head {
    flex-wrap: wrap;
  }

  .page-faq .group-count {
    margin-left: auto;
  }

  .page-faq .next-actions .btn {
    flex: 1 1 auto;
    text-align: center;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .q-mark,
  .page-faq .q-icon::before,
  .page-faq .q-icon::after,
  .page-faq .faq-index a {
    transition: none;
  }
}