.page-faq {
  --faq-rail: 236px;
  --faq-accent: var(--summer);
  --faq-ink-soft: #3A3A37;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(22px, 3.6vw, 44px);
  align-items: start;
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.7rem, 12vw, 5.6rem);
  line-height: .92;
  letter-spacing: .02em;
  color: var(--ink);
  margin: .2em 0 .32em;
}

.page-faq .faq-hero__lede {
  max-width: 46ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 1.7rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__meta-item {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .05em;
  color: var(--scale);
}

.page-faq .faq-hero__meta-item b {
  font-weight: 600;
  color: var(--ink);
  margin-right: .35em;
}

.page-faq .faq-hero__figure {
  border-top: 2px solid var(--spring);
  padding-top: 14px;
}

.page-faq .faq-hero__figure .figure__media {
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

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

/* ---------- 主体双栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: clamp(28px, 5vw, 44px);
  align-items: start;
}

/* ---------- 问题目录 ---------- */
.page-faq .faq-index {
  border: 1px solid var(--line);
  background: var(--card);
  padding: clamp(16px, 3vw, 22px);
}

.page-faq .faq-index__title {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .3em;
  color: var(--scale);
  margin: 0 0 1rem;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .7rem;
  min-height: 44px;
  padding: .55rem .6rem;
  text-decoration: none;
  color: var(--ink);
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--summer);
  outline-offset: 2px;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--summer);
  background: rgba(232, 106, 51, .07);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--summer);
}

.page-faq .faq-index__label {
  font-size: .92rem;
  line-height: 1.5;
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: .66rem;
  line-height: 1.4;
  color: var(--scale);
  border: 1px solid var(--line);
  padding: 1px 5px;
}

.page-faq .faq-index__foot {
  margin: 1rem 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--line);
  font-size: .8rem;
  line-height: 1.7;
  color: var(--scale);
  overflow-wrap: anywhere;
}

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

.page-faq .faq-block {
  --faq-accent: var(--winter);
}

.page-faq #q-flow {
  --faq-accent: var(--spring);
}

.page-faq #q-warranty {
  --faq-accent: var(--summer);
}

.page-faq #q-auth {
  --faq-accent: var(--autumn);
}

.page-faq #q-spec {
  --faq-accent: var(--winter);
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(48px, 8vw, 92px);
}

.page-faq .faq-block__head {
  margin-bottom: clamp(18px, 3vw, 30px);
  padding-left: clamp(14px, 2vw, 22px);
  border-left: 3px solid var(--faq-accent);
}

.page-faq .faq-block__index {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .3em;
  color: var(--faq-accent);
  margin: 0 0 .55rem;
}

.page-faq .faq-block__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.6vw, 2.15rem);
  line-height: 1.18;
  color: var(--ink);
  margin: 0 0 .6rem;
}

.page-faq .faq-block__lede {
  max-width: 54ch;
  margin: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--scale);
}

/* ---------- 单条问答 ---------- */
.page-faq .qa {
  border-top: 1px solid var(--line);
  padding: clamp(14px, 2.2vw, 20px) 0;
}

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

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

.page-faq .qa__toggle {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr) auto;
  gap: .85rem;
  align-items: start;
  width: 100%;
  min-height: 44px;
  padding: .15rem 0;
  background: none;
  border: 0;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.page-faq .qa__toggle:focus-visible {
  outline: 2px solid var(--summer);
  outline-offset: 3px;
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--faq-accent);
  padding-top: .3em;
}

.page-faq .qa__q {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.02rem, 2.4vw, 1.28rem);
  line-height: 1.5;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa__toggle:hover .qa__q,
.page-faq .qa__toggle:focus-visible .qa__q {
  color: var(--faq-accent);
}

.page-faq .qa__mark {
  position: relative;
  width: 13px;
  height: 13px;
  margin-top: .45em;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--scale);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 50%;
  width: 100%;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .qa__mark::after {
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
  transform: translateX(-50%);
}

.page-faq .qa[data-expanded="false"] .qa__mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa__body {
  display: grid;
  gap: .7rem;
  padding: .95rem 0 .3rem;
}

.page-faq .qa[data-expanded="false"] .qa__body {
  display: none;
}

.page-faq .qa__conclusion {
  margin: 0;
  padding: .78rem .95rem;
  font-size: clamp(.94rem, 2.2vw, 1rem);
  line-height: 1.75;
  color: var(--ink);
  border-left: 3px solid var(--faq-accent);
  background-color: var(--card);
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(216, 212, 203, .55) 0,
    rgba(216, 212, 203, .55) 1px,
    transparent 1px,
    transparent 7px
  );
}

.page-faq .qa__text {
  margin: 0;
  max-width: 64ch;
  font-size: .94rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .qa__text a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--summer);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa__text a:hover,
.page-faq .qa__text a:focus-visible {
  color: var(--summer);
}

/* ---------- 保修分组内的竖图 ---------- */
.page-faq .faq-block__body {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-faq .faq-block__figure {
  max-width: 300px;
}

.page-faq .faq-block__figure .figure__media {
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

/* ---------- 参数对照表 ---------- */
.page-faq .faq-table__wrap {
  margin-top: 1rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--card);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: .86rem;
}

.page-faq .faq-table caption {
  caption-side: top;
  text-align: left;
  padding: .8rem .9rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--scale);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: .7rem .9rem;
  text-align: left;
  line-height: 1.6;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-table thead th {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--paper);
  background: var(--autumn);
}

.page-faq .faq-table tbody th {
  font-weight: 500;
  color: var(--ink);
}

.page-faq .faq-table tbody td {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--scale);
}

.page-faq .faq-table tbody tr:last-child th,
.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 求助区块 ---------- */
.page-faq .faq-help {
  margin-top: clamp(44px, 7vw, 80px);
  padding: clamp(22px, 4vw, 38px);
  background: var(--green-deep);
  color: var(--paper);
  border-top: 3px solid var(--summer);
}

.page-faq .faq-help__index {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .3em;
  color: var(--spring);
  margin: 0 0 .75rem;
}

.page-faq .faq-help__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 4.4vw, 2rem);
  line-height: 1.2;
  color: var(--paper);
  margin: 0 0 .75rem;
}

.page-faq .faq-help__text {
  max-width: 60ch;
  margin: 0 0 1.5rem;
  font-size: .93rem;
  line-height: 1.85;
  color: rgba(247, 245, 240, .84);
}

.page-faq .faq-help__list {
  margin: 0 0 1.7rem;
  border-top: 1px solid rgba(247, 245, 240, .22);
}

.page-faq .faq-help__row {
  display: grid;
  gap: .2rem;
  padding: .85rem 0;
  border-bottom: 1px solid rgba(247, 245, 240, .22);
}

.page-faq .faq-help__row dt {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--spring);
}

.page-faq .faq-help__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .92rem;
  overflow-wrap: anywhere;
}

.page-faq .faq-help__row dd a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 106, 51, .85);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-help__row dd a:hover,
.page-faq .faq-help__row dd a:focus-visible {
  color: var(--summer);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

.page-faq .faq-help__actions .btn--ghost {
  color: var(--paper);
  border-color: rgba(247, 245, 240, .42);
}

.page-faq .faq-help__actions .btn--ghost:hover,
.page-faq .faq-help__actions .btn--ghost:focus-visible {
  border-color: var(--spring);
  color: var(--spring);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-help__row {
    grid-template-columns: 8rem minmax(0, 1fr);
    align-items: baseline;
    gap: 1rem;
  }
}

@media (min-width: 720px) {
  .page-faq .qa__body {
    padding-left: calc(3rem + .85rem);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

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

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: center;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-block__body {
    grid-template-columns: minmax(0, 1fr) 208px;
    align-items: start;
  }

  .page-faq .faq-block__figure {
    max-width: none;
    margin-top: .2rem;
  }
}

@media (max-width: 420px) {
  .page-faq .qa__toggle {
    grid-template-columns: 2.4rem minmax(0, 1fr) auto;
    gap: .6rem;
  }

  .page-faq .qa__conclusion {
    padding: .7rem .8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .qa__q,
  .page-faq .faq-index__link,
  .page-faq .qa__text a {
    transition: none;
  }
}