.page-faq {
  --faq-rail-w: 240px;
  --faq-card-line: 3px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--clay-soft);
  border-top: 1px solid var(--line-brass);
  border-bottom: 1px solid var(--line-brass);
  padding: clamp(28px, 5vw, 60px) 0 clamp(36px, 6vw, 72px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -14%;
  width: 62%;
  height: 170%;
  background: linear-gradient(158deg, var(--jade-soft) 0%, rgba(207, 230, 223, 0) 72%);
  transform: skewX(-13deg);
  opacity: .9;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 38%;
  height: 6px;
  background: var(--clay);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
}

.page-faq .faq-hero .lede {
  margin: 14px 0 0;
  color: var(--ink);
  max-width: 62ch;
}

.page-faq .faq-jump {
  list-style: none;
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 13px;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--clay-deep);
  text-decoration: none;
  background: rgba(252, 248, 241, .82);
  border: 1px solid var(--line-brass);
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}

.page-faq .faq-jump a span {
  color: var(--jade);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  background: var(--brass-soft);
  border-color: var(--brass);
  color: var(--clay-deep);
}

/* ---------- 通栏氛围图 ---------- */
.page-faq .faq-banner {
  margin: clamp(26px, 4vw, 48px) 0 0;
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-brass);
  background: var(--jade-soft);
}

.page-faq .faq-banner figcaption {
  margin-top: 10px;
  font-size: var(--fs-note);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(32px, 5vw, 64px);
}

/* ---------- 左侧分类 ---------- */
.page-faq .faq-rail {
  border-top: 3px solid var(--clay);
  background: var(--paper-lift);
  padding: 18px 18px 20px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--jade);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  font-size: .9375rem;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: border-color .2s ease, background-color .2s ease, color .2s ease;
}

.page-faq .faq-rail__no {
  font-family: var(--font-mono);
  font-size: .6875rem;
  color: var(--brass);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  background: var(--clay-soft);
  border-left-color: var(--brass);
  color: var(--clay-deep);
}

.page-faq .faq-rail .aside-note {
  margin-top: 16px;
}

/* ---------- 区块 ---------- */
.page-faq .faq-block + .faq-block {
  margin-top: clamp(40px, 6vw, 76px);
}

.page-faq .faq-block > .section-head {
  border-bottom: 1px solid var(--line-brass);
  padding-bottom: 14px;
}

.page-faq .faq-stack {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

/* ---------- 问答卡片 ---------- */
.page-faq .faq-card {
  background: var(--paper-lift);
  border: 1px solid var(--line-soft);
  border-left: var(--faq-card-line) solid var(--brass);
  transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}

.page-faq .faq-card:hover {
  border-left-color: var(--clay);
  box-shadow: 3px 3px 0 rgba(194, 137, 60, .18);
}

.page-faq .faq-card[open] {
  border-left-color: var(--clay);
  background: var(--paper-lift);
}

.page-faq .faq-card > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: baseline;
  padding: 15px 16px;
}

.page-faq .faq-card > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-card > summary::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: .875rem;
  line-height: 1;
  color: var(--brass);
  transition: color .2s ease, transform .2s ease;
}

.page-faq .faq-card[open] > summary::after {
  content: "－";
  color: var(--clay);
}

.page-faq .faq-card > summary:focus-visible {
  outline: 2px solid var(--jade);
  outline-offset: -3px;
}

.page-faq .faq-card__no {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .06em;
  color: var(--brass);
  white-space: nowrap;
}

.page-faq .faq-card__q {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-card[open] .faq-card__q {
  color: var(--clay-deep);
}

.page-faq .faq-card__body {
  display: grid;
  gap: 12px;
  padding: 0 16px 18px;
  animation: faq-card-in .24s ease both;
}

@keyframes faq-card-in {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-card__verdict {
  margin: 0;
  padding: 12px 14px;
  background: var(--clay-soft);
  border-left: 3px solid var(--clay);
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--clay-deep);
}

.page-faq .faq-card__next {
  margin: 0;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-card__next a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color .2s ease, border-color .2s ease;
}

.page-faq .faq-card__next a:hover,
.page-faq .faq-card__next a:focus-visible {
  color: var(--jade-deep);
  border-bottom-color: var(--brass);
}

.page-faq .faq-card__steps {
  counter-reset: faq-step;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-faq .faq-card__steps li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 24px;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-card__steps li::before {
  content: counter(faq-step);
  position: absolute;
  left: 0;
  top: .34em;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--jade);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: .5625rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- 版本号解读 ---------- */
.page-faq .faq-version {
  display: grid;
  gap: 20px;
  margin-top: 22px;
}

.page-faq .faq-plates {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-plate {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--paper-lift);
  border-top: 2px solid var(--brass);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-plate__key {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--jade);
  white-space: nowrap;
}

.page-faq .faq-plate__text {
  font-size: .875rem;
  line-height: 1.7;
  color: var(--ink);
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-brass);
  background: var(--jade-deep);
}

.page-faq .faq-figure figcaption {
  margin-top: 8px;
  font-size: var(--fs-note);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  margin-top: clamp(42px, 6vw, 78px);
  padding: clamp(24px, 4vw, 42px);
  background: var(--clay-deep);
  color: var(--paper);
}

.page-faq .faq-contact::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: var(--scan);
}

.page-faq .faq-contact .eyebrow {
  color: var(--brass-soft);
}

.page-faq .faq-contact h2 {
  margin: 6px 0 12px;
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-contact > p {
  margin: 0;
  max-width: 62ch;
  font-size: .9375rem;
  line-height: 1.78;
  color: rgba(247, 242, 233, .88);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
}

.page-faq .faq-contact__item {
  padding-left: 14px;
  border-left: 2px solid var(--brass);
}

.page-faq .faq-contact__item dt {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--brass-soft);
}

.page-faq .faq-contact__item dd {
  margin: 5px 0 0;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-contact .faq-contact__note {
  margin-top: 24px;
  font-size: var(--fs-note);
  line-height: 1.75;
  color: rgba(247, 242, 233, .74);
}

.page-faq .faq-contact .faq-contact__note a {
  color: var(--scan);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color .2s ease;
}

.page-faq .faq-contact .faq-contact__note a:hover,
.page-faq .faq-contact .faq-contact__note a:focus-visible {
  color: var(--brass-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-contact__item:last-child {
    grid-column: 1 / -1;
  }
}

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

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .faq-card > summary {
    grid-template-columns: 68px 1fr auto;
    padding: 16px 20px;
  }

  .page-faq .faq-card__body {
    padding: 0 20px 20px;
    max-width: 68ch;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-contact__item:last-child {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card__body {
    animation: none;
  }

  .page-faq .faq-card,
  .page-faq .faq-jump a,
  .page-faq .faq-rail__list a {
    transition: none;
  }
}