.page-faq {
  --faq-line: rgba(155, 140, 120, .32);
  --faq-ink-soft: #33485a;
  background: var(--paper);
  color: var(--night);
}

/* ---------- 面包屑与首屏 ---------- */
.page-faq .breadcrumbs {
  padding: 14px 0 0;
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 34px;
  background-color: var(--sand);
  background-image:
    linear-gradient(rgba(155, 140, 120, .18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(155, 140, 120, .18) 1px, transparent 1px);
  background-size: 56px 56px, 56px 56px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(180, 74, 50, .26), rgba(180, 74, 50, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 16px;
  max-width: 15em;
  font-family: var(--font-sans);
  font-size: clamp(30px, 7.6vw, 60px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: .015em;
  color: var(--night);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--faq-ink-soft);
}

.page-faq .hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 22px 0 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-line);
}

.page-faq .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-faq .hero-facts__k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--coordinate);
}

.page-faq .hero-facts__v {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .01em;
}

/* ---------- 区块骨架 ---------- */
.page-faq .faq-section {
  padding: 34px 0 40px;
}

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

.page-faq .faq-section__head {
  max-width: 42em;
}

.page-faq .faq-section__title {
  margin: 8px 0 10px;
  font-size: clamp(22px, 5vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: .015em;
}

.page-faq .faq-section__lead {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

/* ---------- 五步快速开始 ---------- */
.page-faq .steps {
  display: grid;
  gap: 18px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .step {
  position: relative;
  padding: 20px 16px 16px;
  background: var(--paper);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-faq .step::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 16px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(47, 212, 196, .2);
}

.page-faq .step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--clay);
}

.page-faq .step__title {
  margin: 7px 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .step__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

.page-faq .faq-figure {
  margin: 26px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-faq .faq-figure .figure__caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--line);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: 32px 0 46px;
  background: var(--paper);
}

.page-faq .faq-body__head {
  max-width: 40em;
  margin-bottom: 18px;
}

.page-faq .faq-body .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
}

.page-faq .faq-body__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-aside {
  order: 0;
}

.page-faq .toc__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--coordinate);
}

.page-faq .toc {
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: var(--paper);
  overflow: hidden;
}

.page-faq .toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--faq-line);
  color: var(--night);
  font-size: 14.5px;
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-faq .toc li:last-child a {
  border-bottom: 0;
}

.page-faq .toc a:hover {
  background: var(--sand);
  color: var(--clay-deep);
}

.page-faq .toc__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--coordinate);
}

.page-faq .toc__text {
  flex: 1;
}

.page-faq .aside-note {
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--sand);
  border-left: 3px solid var(--clay);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-faq .aside-note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

/* ---------- 题组与手风琴 ---------- */
.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-group {
  margin: 0 0 34px;
  scroll-margin-top: 84px;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--clay);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .02em;
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--coordinate);
  white-space: nowrap;
}

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

.page-faq .qa summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--night);
  transition: color .2s var(--ease);
}

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

.page-faq .qa summary:hover {
  color: var(--clay-deep);
}

.page-faq .qa summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  padding-left: 10px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--clay);
}

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

.page-faq .qa[open] summary::after {
  content: "−";
}

.page-faq .qa__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--coordinate);
}

.page-faq .qa__q {
  flex: 1;
}

.page-faq .qa__answer {
  padding: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .qa__answer p {
  margin: 0 0 9px;
}

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

/* ---------- 支持资源 ---------- */
.page-faq .faq-resources {
  background: var(--sand);
  border-top: 1px solid var(--line-soft);
}

.page-faq .resource-grid {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .resource {
  display: block;
  padding: 18px 16px;
  background: var(--paper);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--night);
  transition: transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-faq .resource:hover {
  transform: translateY(-3px);
  border-color: var(--clay);
  box-shadow: var(--shadow-card);
}

.page-faq .resource__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--coordinate);
}

.page-faq .resource__title {
  margin: 8px 0 6px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: .01em;
}

.page-faq .resource__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

.page-faq .faq-signoff {
  margin: 24px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--coordinate);
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-faq .qa__answer {
    padding-left: 26px;
  }

  .page-faq .qa summary {
    font-size: 16.5px;
  }

  .page-faq .hero-facts {
    gap: 16px 38px;
  }
}

@media (min-width: 760px) {
  .page-faq .steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
  }

  .page-faq .resource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-section {
    padding: 44px 0 50px;
  }

  .page-faq .faq-hero {
    padding: 34px 0 46px;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 20px;
  }

  .page-faq .faq-body {
    padding: 40px 0 58px;
  }
}

@media (min-width: 1000px) {
  .page-faq .resource-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero h1 {
    max-width: 18em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .resource,
  .page-faq .toc a,
  .page-faq .qa summary {
    transition: none;
  }

  .page-faq .resource:hover {
    transform: none;
  }
}