.page-faq {
  --faq-soft: rgba(244, 239, 228, 0.72);
  --faq-muted: #5b5a52;
  background: var(--paper);
  color: var(--text);
}

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

.page-faq mark {
  background: rgba(216, 166, 87, 0.4);
  color: inherit;
  padding: 0 2px;
  border-radius: 3px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: clamp(24px, 4vw, 40px) 0 clamp(40px, 6vw, 76px);
  border-bottom-left-radius: var(--r-lg);
  border-bottom-right-radius: var(--r-lg);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -12%;
  width: min(620px, 88%);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(109, 107, 232, 0.45), rgba(109, 107, 232, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(22px, 4vw, 38px);
}

.page-faq .faq-hero-copy h1 {
  font-size: clamp(30px, 5.6vw, 54px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
  color: var(--white);
}

.page-faq .faq-hero .lede {
  margin-top: 18px;
  max-width: 40ch;
  color: var(--faq-soft);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

.page-faq .faq-hero-actions {
  margin-top: 26px;
}

.page-faq .faq-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  border: 1px solid rgba(244, 239, 228, 0.18);
  border-radius: var(--r-md);
  overflow: hidden;
  background: rgba(244, 239, 228, 0.18);
}

.page-faq .faq-stats li {
  background: var(--ink-2);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 500;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-faq .faq-stat-label {
  font-size: 13px;
  color: var(--faq-soft);
}

/* ---------- 检索带 ---------- */
.page-faq .faq-search-band {
  background: var(--paper-2);
  padding: clamp(42px, 6vw, 80px) 0;
}

.page-faq .faq-search-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-search-main h2 {
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.24;
  font-weight: 800;
  margin: 12px 0 0;
}

.page-faq .faq-search-lede {
  margin-top: 14px;
  max-width: 46ch;
  line-height: 1.78;
  color: var(--faq-muted);
}

.page-faq .faq-search-demo {
  margin-top: 26px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--white);
  padding: clamp(14px, 2.4vw, 22px);
  box-shadow: var(--shadow-card);
}

.page-faq .search-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .search-bar-mark {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  padding: 3px 9px;
}

.page-faq .search-term {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-faq .search-caret {
  width: 2px;
  height: 15px;
  background: var(--cyan);
  animation: faq-caret 1.1s steps(1) infinite;
}

@keyframes faq-caret {
  50% { opacity: 0; }
}

.page-faq .search-hits {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .search-hit {
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--paper);
  padding: 12px 14px;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .search-hit:first-child {
  border-color: rgba(57, 224, 214, 0.6);
  background: rgba(57, 224, 214, 0.07);
}

.page-faq .search-hit:hover {
  transform: translateY(-2px);
  border-color: rgba(57, 224, 214, 0.55);
}

.page-faq .search-hit-path {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .search-hit-title {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .search-hit-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--faq-muted);
}

.page-faq .search-demo-note {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .faq-search-figure {
  margin: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  background: var(--paper);
  padding: clamp(42px, 6vw, 84px) 0;
}

.page-faq .faq-index-head {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-bottom: clamp(24px, 4vw, 38px);
}

.page-faq .faq-index-heading h2 {
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.24;
  font-weight: 800;
  margin: 12px 0 0;
}

.page-faq .faq-index-heading p {
  margin-top: 14px;
  max-width: 48ch;
  line-height: 1.78;
  color: var(--faq-muted);
}

.page-faq .faq-index-figure {
  margin: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-2);
}

.page-faq .faq-index-grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-cat {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--white);
  padding: clamp(16px, 2.4vw, 22px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-cat:hover {
  transform: translateY(-2px);
  border-color: rgba(57, 224, 214, 0.6);
}

.page-faq .faq-cat-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-cat h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.page-faq .faq-cat p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--faq-muted);
}

.page-faq .faq-cat-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-2);
}

.page-faq .faq-cat-link {
  margin-top: auto;
  padding-top: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 224, 214, 0.7);
  align-self: flex-start;
}

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

/* ---------- 正文与侧栏 ---------- */
.page-faq .faq-body {
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
  padding: clamp(38px, 5vw, 76px) 0 clamp(48px, 7vw, 96px);
}

.page-faq .faq-body-grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-faq .faq-toc {
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--white);
  padding: 18px;
}

.page-faq .faq-toc-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

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

.page-faq .faq-toc-list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 6px;
  border-radius: var(--r-sm);
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-toc-list a:hover,
.page-faq .faq-toc-list a:focus-visible {
  background: rgba(57, 224, 214, 0.14);
  color: var(--ink);
}

.page-faq .faq-toc-key {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

.page-faq .faq-toc-cta {
  display: inline-block;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  width: 100%;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  text-decoration: none;
}

.page-faq .faq-toc-cta:hover,
.page-faq .faq-toc-cta:focus-visible {
  color: var(--ember);
}

.page-faq .faq-sections {
  display: grid;
  gap: clamp(34px, 5vw, 60px);
  min-width: 0;
}

.page-faq .faq-sec-num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-sec h2 {
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.26;
  font-weight: 800;
  margin: 0;
}

.page-faq .faq-sec-lede {
  margin: 14px 0 0;
  max-width: 58ch;
  line-height: 1.78;
  color: var(--faq-muted);
}

.page-faq .faq-sec-foot {
  margin: 24px 0 0;
}

/* 四步流程 */
.page-faq .faq-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps li {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 2px solid var(--gold);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  padding: 16px 18px;
}

.page-faq .faq-step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .faq-steps h3 {
  margin: 6px 0 6px;
  font-size: 17px;
  font-weight: 700;
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--faq-muted);
}

.page-faq .faq-hints {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.page-faq .faq-hint {
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: var(--paper-2);
  border: 1px solid var(--line);
}

.page-faq .faq-hint h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-2);
}

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

/* 版本镜像 */
.page-faq .faq-mirror {
  display: grid;
  margin: 26px 0 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--white);
}

.page-faq .faq-mirror-col {
  padding: clamp(18px, 2.6vw, 26px);
}

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

.page-faq .faq-mirror-tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-mirror-col h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
}

.page-faq .faq-mirror-col p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--faq-muted);
}

.page-faq .faq-diff-intro {
  margin: 26px 0 0;
  font-size: 14px;
  color: var(--faq-muted);
}

.page-faq .faq-diff-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-diff-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  column-gap: 10px;
  row-gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-diff-num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  padding-top: 3px;
}

.page-faq .faq-diff-name {
  font-size: 15px;
  font-weight: 700;
}

.page-faq .faq-diff-desc {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--faq-muted);
}

/* 手风琴 */
.page-faq .faq-accordion {
  margin-top: 24px;
  border-top: 1px solid var(--line-strong);
}

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

.page-faq .faq-accordion .accordion-trigger {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  padding: 16px 4px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text);
  background: none;
  border: 0;
  cursor: pointer;
}

.page-faq .faq-accordion .accordion-trigger:hover {
  color: var(--ink-2);
}

.page-faq .faq-accordion .accordion-trigger[aria-expanded="true"] {
  color: var(--ink);
}

.page-faq .doc-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .doc-title {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-accordion .accordion-body {
  padding: 0 4px 18px;
}

.page-faq .faq-accordion .accordion-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--faq-muted);
}

/* 支持面板 */
.page-faq .faq-support {
  margin-top: 30px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3.6vw, 38px);
  display: grid;
  gap: 24px;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-support::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: min(420px, 70%);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(109, 107, 232, 0.34), rgba(109, 107, 232, 0) 70%);
  pointer-events: none;
}

.page-faq .faq-support-copy {
  position: relative;
}

.page-faq .faq-support-copy h3 {
  margin: 10px 0 10px;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-support-copy p {
  margin: 0;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--faq-soft);
}

.page-faq .faq-support-actions {
  position: relative;
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .faq-support-actions .btn {
  justify-self: start;
}

.page-faq .faq-mail {
  margin: 2px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--cyan);
  word-break: break-all;
}

.page-faq .faq-support-links {
  margin: 0;
}

.page-faq .faq-support-links a {
  font-size: 13px;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(216, 166, 87, 0.8);
}

.page-faq .faq-support-links a:hover,
.page-faq .faq-support-links a:focus-visible {
  color: var(--gold);
}

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

  .page-faq .faq-hints {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .page-faq .faq-support-actions {
    grid-template-columns: repeat(2, max-content);
    align-items: center;
    gap: 14px 16px;
  }

  .page-faq .faq-mail {
    grid-column: 1 / -1;
  }
}

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

  .page-faq .faq-mirror-col + .faq-mirror-col {
    border-top: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-diff-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: 1.45fr 0.85fr;
    align-items: end;
  }

  .page-faq .faq-index-head {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
  }

  .page-faq .faq-support {
    grid-template-columns: 1.25fr 0.75fr;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-search-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .page-faq .faq-body-grid {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-index-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .page-faq .faq-cat:nth-child(1),
  .page-faq .faq-cat:nth-child(2) {
    grid-column: span 3;
  }

  .page-faq .faq-cat:nth-child(n + 3) {
    grid-column: span 2;
  }
}

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

  .page-faq .search-hit,
  .page-faq .faq-cat,
  .page-faq .faq-toc-list a {
    transition: none;
  }

  .page-faq .search-hit:hover,
  .page-faq .faq-cat:hover {
    transform: none;
  }
}