.page-faq {
  --faq-radius: var(--r-card);
  background: var(--cream);
  color: var(--text-body);
}

.page-faq .eyebrow {
  letter-spacing: .08em;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(40px, 7vw, 88px) clamp(48px, 7vw, 104px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -18%;
  right: -22%;
  width: min(760px, 78%);
  height: 148%;
  background: linear-gradient(155deg, var(--ink-700) 0%, var(--ink-950) 78%);
  clip-path: polygon(32% 0, 100% 0, 100% 100%, 0 100%);
  opacity: .72;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -6%;
  bottom: -32%;
  width: 46%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(192, 139, 62, .22) 0%, rgba(192, 139, 62, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(30px, 6.4vw, 60px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-faq .faq-hero__lead {
  max-width: 46ch;
  margin: 20px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.88;
  color: rgba(239, 233, 220, .8);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 26px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--copper-200);
}

.page-faq .faq-hero__meta span {
  position: relative;
  padding-left: 16px;
}

.page-faq .faq-hero__meta span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 7px;
  height: 1px;
  background: var(--cyan);
  transform: translateY(-50%);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--line-dark);
  box-shadow: 0 24px 60px -34px rgba(0, 0, 0, .78);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

/* ---------- 顶部四问 ---------- */

.page-faq .faq-top {
  padding-block: clamp(48px, 7vw, 96px) clamp(32px, 5vw, 64px);
}

.page-faq .faq-top__head {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-faq .faq-top__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .faq-quick {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.8vw, 32px);
  background: var(--cream-soft);
}

.page-faq .faq-quick__num {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--copper);
}

.page-faq .faq-quick__q {
  margin: 0;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 600;
  line-height: 1.42;
  letter-spacing: -0.005em;
  color: var(--char);
}

.page-faq .faq-quick__a {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--text-body);
}

.page-faq .faq-quick__steps {
  margin: 2px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: qs;
  display: grid;
  gap: 9px;
  font-size: 13.5px;
  line-height: 1.74;
  color: var(--text-body);
}

.page-faq .faq-quick__steps li {
  counter-increment: qs;
  position: relative;
  padding-left: 26px;
}

.page-faq .faq-quick__steps li::before {
  content: counter(qs, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--copper);
}

/* ---------- 主体分栏 ---------- */

.page-faq .faq-body {
  padding-block: clamp(32px, 5vw, 64px) clamp(56px, 8vw, 112px);
}

.page-faq .faq-body__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-faq .faq-index {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--cream-soft);
}

.page-faq .faq-index .index-nav__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-faq .faq-index .index-nav__list {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index .index-nav__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index .index-nav__link {
  display: block;
  padding: 8px 13px;
  border-radius: var(--r-sm);
  font-size: 13.5px;
  line-height: 1.5;
  white-space: nowrap;
  color: var(--text-body);
  text-decoration: none;
  transition: background-color 200ms var(--ease), color 200ms var(--ease);
}

.page-faq .faq-index .index-nav__link:hover {
  background: rgba(192, 139, 62, .16);
  color: var(--char);
}

.page-faq .faq-index .index-nav__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-index .index-nav__link.is-active {
  background: var(--ink-900);
  color: var(--cyan);
}

.page-faq .faq-index .index-nav__meta {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--muted);
}

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

/* ---------- 分类与问答 ---------- */

.page-faq .faq-cat {
  scroll-margin-top: calc(var(--header-h) + 32px);
}

.page-faq .faq-cat + .faq-cat {
  margin-top: clamp(44px, 6vw, 80px);
}

.page-faq .faq-cat__head {
  margin-bottom: 22px;
}

.page-faq .faq-cat__head::before {
  content: "";
  display: block;
  width: 46px;
  height: 3px;
  margin-bottom: 14px;
  background: var(--copper);
  border-radius: 2px;
}

.page-faq .faq-cat__title {
  margin: 8px 0 0;
  font-size: clamp(21px, 2.8vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--char);
}

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

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

.page-faq .faq-item__summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  transition: color 200ms var(--ease);
}

.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: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.page-faq .faq-item__summary:hover .faq-item__q {
  color: var(--ink-500);
}

.page-faq .faq-item__marker {
  position: relative;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: 1px solid rgba(192, 139, 62, .72);
  border-radius: 50%;
  transition: background-color 200ms var(--ease);
}

.page-faq .faq-item__marker::before,
.page-faq .faq-item__marker::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--copper);
  transform: translate(-50%, -50%);
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

.page-faq .faq-item__marker::before {
  width: 8px;
  height: 1.5px;
}

.page-faq .faq-item__marker::after {
  width: 1.5px;
  height: 8px;
}

.page-faq .faq-item[open] .faq-item__marker {
  background: rgba(192, 139, 62, .14);
}

.page-faq .faq-item[open] .faq-item__marker::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  margin: 0;
  font-size: clamp(15.5px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.58;
  color: var(--char);
  transition: color 200ms var(--ease);
}

.page-faq .faq-item__body {
  display: grid;
  gap: 13px;
  padding: 0 4px 24px 32px;
}

.page-faq .faq-item__basis {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--text-body);
}

.page-faq .faq-item__label {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border: 1px solid rgba(192, 139, 62, .55);
  border-radius: 4px;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--copper);
  vertical-align: 1.5px;
}

.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: fs;
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-body);
}

.page-faq .faq-steps > li {
  counter-increment: fs;
  position: relative;
  padding-left: 32px;
}

.page-faq .faq-steps > li::before {
  content: counter(fs, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--copper);
}

/* ---------- 版本读数 ---------- */

.page-faq .faq-versions {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 30px);
  margin-bottom: 28px;
}

.page-faq .faq-versions__panel {
  padding: clamp(20px, 2.6vw, 30px);
  border-radius: var(--faq-radius);
  background: var(--ink-900);
  color: var(--cream);
}

.page-faq .faq-versions__lead {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(239, 233, 220, .82);
}

.page-faq .faq-versions__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.page-faq .faq-versions__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px;
  background: var(--ink-700);
}

.page-faq .faq-versions__name {
  font-size: 14px;
  color: rgba(239, 233, 220, .86);
}

.page-faq .faq-versions__row .version-badge {
  flex: 0 0 auto;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--copper);
  color: var(--ink-950);
  font-size: 12.5px;
  letter-spacing: .06em;
}

.page-faq .faq-versions__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.78;
  color: rgba(239, 233, 220, .64);
}

.page-faq .faq-versions__figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-versions__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  border-radius: var(--faq-radius);
  border: 1px solid var(--line);
  background: var(--stone);
}

.page-faq .faq-versions__figure figcaption {
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 求助区块 ---------- */

.page-faq .faq-help {
  padding-block: clamp(48px, 7vw, 96px);
}

.page-faq .faq-help__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-faq .faq-help__title {
  margin: 8px 0 0;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--char);
}

.page-faq .faq-help__lead {
  max-width: 48ch;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.86;
  color: var(--text-body);
}

.page-faq .faq-help__list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  counter-reset: hs;
}

.page-faq .faq-help__list li {
  counter-increment: hs;
  position: relative;
  padding-left: 34px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-body);
}

.page-faq .faq-help__list li::before {
  content: counter(hs, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--copper);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-help__side {
  padding: clamp(20px, 2.6vw, 30px);
  border-radius: var(--faq-radius);
  background: var(--cream-soft);
  border: 1px solid var(--line);
}

.page-faq .faq-help__facts {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.page-faq .faq-help__fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 15px;
  background: var(--cream-soft);
}

.page-faq .faq-help__fact dt {
  flex: 0 0 auto;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-faq .faq-help__fact dd {
  margin: 0;
  text-align: right;
  font-size: 14px;
  line-height: 1.6;
  color: var(--char);
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-top__grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-versions {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 7fr 5fr;
  }

  .page-faq .faq-body__inner {
    grid-template-columns: 268px minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 22px;
  }

  .page-faq .faq-index .index-nav__list {
    flex-direction: column;
    flex-wrap: wrap;
    overflow-x: visible;
    padding-bottom: 0;
    gap: 4px;
  }

  .page-faq .faq-index .index-nav__link {
    white-space: normal;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: 8fr 4fr;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-body__inner {
    grid-template-columns: 300px minmax(0, 1fr);
  }
}

@media (max-width: 600px) {
  .page-faq .faq-item__body {
    padding-left: 0;
  }

  .page-faq .faq-versions__row {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-faq .faq-help__fact {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-faq .faq-help__fact dd {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__marker,
  .page-faq .faq-item__marker::before,
  .page-faq .faq-item__marker::after,
  .page-faq .faq-item__q,
  .page-faq .faq-index .index-nav__link,
  .page-faq .faq-item__summary {
    transition: none;
  }
}