.page-faq {
  --faq-rail: 230px;
  --faq-shadow-soft: 0 20px 50px -34px rgba(0, 0, 0, .9);
  color: var(--text);
}

.page-faq .breadcrumb {
  padding-top: 1.5rem;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 1.75rem 0 2.5rem;
}

.page-faq .faq-hero h1 {
  margin: .7rem 0 0;
  font-size: clamp(1.9rem, 7.2vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  font-weight: 800;
  max-width: 20ch;
}

.page-faq .faq-lede {
  margin: 1.15rem 0 0;
  max-width: 60ch;
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-faq .faq-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero .figure {
  margin: 2rem 0 0;
}

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

/* ---------- 主体栅格 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: 2rem;
  padding: 1rem 0 3rem;
}

/* ---------- 目录 ---------- */

.page-faq .faq-toc {
  border-top: 1px dashed var(--line);
  padding-top: 1.25rem;
}

.page-faq .faq-toc-head {
  margin: 0 0 .9rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--text-mute);
}

.page-faq .faq-toc-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .35rem .9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc-link {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  padding: .35rem 0;
  font-size: .88rem;
  line-height: 1.5;
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-faq .faq-toc-link:hover,
.page-faq .faq-toc-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-toc-link[aria-current="true"],
.page-faq .faq-toc-link.is-active {
  color: var(--cyan);
  border-bottom-color: var(--orange);
}

.page-faq .faq-toc-num {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--orange);
  letter-spacing: .06em;
}

/* ---------- 章节 ---------- */

.page-faq .faq-section {
  position: relative;
  padding: 2.25rem 0 2.5rem;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-section:first-child {
  border-top: 0;
  padding-top: .5rem;
}

.page-faq .faq-section h2 {
  margin: .5rem 0 0;
  font-size: clamp(1.35rem, 4.4vw, 2rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  font-weight: 800;
  max-width: 22ch;
}

.page-faq .faq-section h3 {
  margin: 0 0 .4rem;
  font-size: 1.03rem;
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: .01em;
}

.page-faq .faq-intro {
  margin: 1rem 0 0;
  max-width: 58ch;
  font-size: .97rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 三步走 ---------- */

.page-faq .faq-steps {
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 2.9rem minmax(0, 1fr);
  gap: .35rem 1rem;
  padding: 0 0 1.6rem;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 1.42rem;
  top: 2.4rem;
  bottom: .2rem;
  width: 0;
  border-left: 1px dashed var(--line-strong);
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.9rem;
  height: 2.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: .9rem;
  letter-spacing: .04em;
  color: var(--cyan);
  background: var(--ink-800);
}

.page-faq .faq-step-body p {
  margin: 0;
  max-width: 56ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 提示条目 ---------- */

.page-faq .faq-notes {
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.4rem;
}

.page-faq .faq-note {
  padding-left: 1rem;
  border-left: 2px solid var(--line-strong);
  transition: border-color .2s ease;
}

.page-faq .faq-note:hover {
  border-left-color: var(--orange);
}

.page-faq .faq-note dt {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .01em;
}

.page-faq .faq-note dd {
  margin: .4rem 0 0;
  max-width: 56ch;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 会员中心四件事 ---------- */

.page-faq .faq-ops {
  margin: 1.75rem 0 0;
  display: grid;
  gap: 1.5rem;
}

.page-faq .faq-op {
  position: relative;
  padding: 0 0 0 1rem;
  border-left: 2px solid var(--line);
  transition: border-color .2s ease;
}

.page-faq .faq-op::after {
  content: "";
  position: absolute;
  left: -2px;
  top: 0;
  width: 2px;
  height: 1.4rem;
  background: var(--cyan);
  opacity: .85;
}

.page-faq .faq-op:nth-child(2n)::after {
  background: var(--gold);
}

.page-faq .faq-op:nth-child(3n)::after {
  background: var(--orange);
}

.page-faq .faq-op:hover {
  border-left-color: var(--line-strong);
}

.page-faq .faq-op p {
  margin: 0;
  max-width: 46ch;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 故障处理 ---------- */

.page-faq .faq-fix {
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqfix;
}

.page-faq .faq-fix-item {
  counter-increment: faqfix;
  position: relative;
  padding: 0 0 1.5rem 2.8rem;
}

.page-faq .faq-fix-item::before {
  content: counter(faqfix, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .05rem;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  letter-spacing: .04em;
  color: var(--orange);
}

.page-faq .faq-fix-item:last-child {
  padding-bottom: 0;
}

.page-faq .faq-fix-item p {
  margin: 0;
  max-width: 56ch;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 版本记录（纸面板） ---------- */

.page-faq .faq-section--paper {
  border-top: 0;
  padding-top: 1rem;
}

.page-faq .faq-paper {
  padding: 2rem 1.4rem;
  color: var(--ink-900);
  box-shadow: var(--faq-shadow-soft);
}

.page-faq .faq-paper .section-num {
  color: var(--orange);
}

.page-faq .faq-paper h2 {
  color: var(--ink-900);
}

.page-faq .faq-paper p {
  margin: 1rem 0 0;
  max-width: 58ch;
  font-size: .95rem;
  line-height: 1.85;
  color: #33291d;
}

.page-faq .faq-version-list {
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .7rem;
}

.page-faq .faq-version-list li {
  padding-left: 1rem;
  border-left: 2px solid rgba(51, 41, 29, .28);
  font-size: .93rem;
  line-height: 1.8;
  color: #33291d;
}

.page-faq .faq-version-list strong {
  color: var(--ink-900);
}

/* ---------- 常见问题 ---------- */

.page-faq .faq-qa {
  margin: 1.75rem 0 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-qa-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.05rem 0;
  cursor: pointer;
  font-size: .99rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  list-style: none;
}

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

.page-faq .faq-qa-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--orange);
  transition: transform .2s ease;
}

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

.page-faq .faq-qa-item summary:hover {
  color: var(--cyan);
}

.page-faq .faq-qa-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .faq-qa-body {
  padding: 0 0 1.15rem;
}

.page-faq .faq-qa-body p {
  margin: 0;
  max-width: 58ch;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 结尾行动 ---------- */

.page-faq .faq-cta {
  margin-top: 2.5rem;
  padding: 1.9rem 1.4rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 130% at 12% 0%, rgba(62, 224, 255, .14), transparent 62%),
    radial-gradient(120% 130% at 100% 100%, rgba(255, 106, 43, .16), transparent 60%),
    var(--ink-800);
  display: grid;
  gap: 1.5rem;
}

.page-faq .faq-cta h2 {
  margin: .4rem 0 0;
  font-size: clamp(1.2rem, 4vw, 1.6rem);
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: -.01em;
  max-width: 24ch;
}

.page-faq .faq-cta-copy p {
  margin: .85rem 0 0;
  max-width: 50ch;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--text-dim);
}

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

/* ---------- 平板及以上 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 2.25rem 0 3rem;
  }

  .page-faq .faq-toc-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.6rem 2rem;
  }

  .page-faq .faq-ops {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem 2.25rem;
  }

  .page-faq .faq-paper {
    padding: 2.5rem 2.25rem;
  }

  .page-faq .faq-cta {
    padding: 2.25rem 2.25rem;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

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

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 3.5rem;
    padding: 2rem 0 1rem;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 7rem;
    align-self: start;
    border-top: 0;
    border-left: 1px solid var(--line);
    padding: 0 0 0 1.25rem;
  }

  .page-faq .faq-toc-list {
    grid-template-columns: minmax(0, 1fr);
    gap: .15rem;
  }

  .page-faq .faq-step {
    grid-template-columns: 3.4rem minmax(0, 1fr);
    gap: .4rem 1.6rem;
    padding-bottom: 2rem;
  }

  .page-faq .faq-step::before {
    left: 1.68rem;
    top: 3.2rem;
  }

  .page-faq .faq-step-num {
    width: 3.4rem;
    height: 3.4rem;
    font-size: 1rem;
  }

  .page-faq .faq-section {
    padding: 3rem 0 3.25rem;
  }

  .page-faq .faq-fix-item {
    padding-left: 3.6rem;
  }

  .page-faq .faq-fix-item::before {
    font-size: 1.25rem;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero h1 {
    max-width: 24ch;
  }

  .page-faq .faq-ops {
    gap: 2rem 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc-link,
  .page-faq .faq-note,
  .page-faq .faq-op,
  .page-faq .faq-qa-item summary::after {
    transition: none;
  }
}