.page-faq {
  --faq-index-w: 236px;
  --faq-gap: 20px;
  background: var(--surface);
  color: var(--text);
  padding-bottom: clamp(64px, 9vw, 112px);
}

/* ---------- 顶部 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(96px, 13vw, 138px) 0 clamp(28px, 4vw, 48px);
  background:
    radial-gradient(820px 340px at 8% -12%, rgba(255, 107, 44, 0.13), transparent 66%),
    radial-gradient(720px 320px at 94% -4%, rgba(37, 217, 210, 0.11), transparent 62%);
}

.page-faq .faq-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-soft);
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-faq .faq-crumb a {
  color: var(--text-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-faq .faq-crumb-sep { color: var(--blueprint-800); }

.page-faq .faq-kicker {
  margin: 0 0 18px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--orange);
}

.page-faq .faq-title {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 5.6vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  max-width: 18ch;
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .faq-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--text-soft);
}

.page-faq .faq-meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-meta li .mono {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.1em;
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  padding-top: clamp(24px, 3vw, 40px);
}

/* ---------- 场景索引 ---------- */
.page-faq .faq-index {
  border: 1px solid var(--line);
  border-radius: var(--radius-block);
  background: linear-gradient(180deg, rgba(17, 50, 80, 0.42), rgba(10, 26, 47, 0.30));
  padding: 22px 20px;
}

.page-faq .idx-label {
  margin: 0 0 16px;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--text-soft);
}

.page-faq .idx-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.page-faq .idx-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .idx-n {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--slate-400);
}

.page-faq .idx-link:hover,
.page-faq .idx-link:focus-visible {
  border-color: rgba(255, 107, 44, 0.55);
  background: rgba(255, 107, 44, 0.08);
}

.page-faq .idx-link:hover .idx-n,
.page-faq .idx-link:focus-visible .idx-n {
  color: var(--orange);
}

.page-faq .idx-help {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .idx-help-t {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 600;
}

.page-faq .idx-help-d {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-soft);
}

/* ---------- 章节 ---------- */
.page-faq .faq-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(48px, 7vw, 84px);
}

.page-faq .faq-sec {
  scroll-margin-top: 120px;
}

.page-faq .sec-head {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .sec-no {
  margin: 0 0 12px;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-faq .sec-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-faq .sec-lede {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .sec-lede a,
.page-faq .qa-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 217, 210, 0.42);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .sec-lede a:hover,
.page-faq .qa-a a:hover,
.page-faq .sec-lede a:focus-visible,
.page-faq .qa-a a:focus-visible {
  color: var(--cyan-100);
  border-bottom-color: var(--cyan-100);
}

/* ---------- 问答 ---------- */
.page-faq .qa-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .qa-group--tight { margin-top: 20px; }

.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--radius-soft);
  background: linear-gradient(180deg, rgba(17, 50, 80, 0.30), rgba(10, 26, 47, 0.16));
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

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

.page-faq .qa[open] {
  border-color: rgba(255, 107, 44, 0.42);
  background: linear-gradient(180deg, rgba(17, 50, 80, 0.55), rgba(10, 26, 47, 0.28));
}

.page-faq .qa-q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  transition: color var(--dur) var(--ease);
}

.page-faq .qa-q::-webkit-details-marker { display: none; }
.page-faq .qa-q::marker { content: ""; }

.page-faq .qa-q:hover { color: var(--orange); }

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
  border-radius: var(--radius-soft);
}

.page-faq .qa-q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--orange);
}

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

.page-faq .qa-num {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--slate-400);
  flex: none;
}

.page-faq .qa[open] .qa-num { color: var(--orange); }

.page-faq .qa-qtext { min-width: 0; }

.page-faq .qa-a {
  padding: 0 18px 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .qa-a p { margin: 0 0 10px; }
.page-faq .qa-a p:last-child { margin-bottom: 0; }

.page-faq .qa-a ul {
  margin: 0 0 10px;
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .qa-a li { position: relative; }

/* ---------- 图片 ---------- */
.page-faq .faq-fig {
  margin: 26px 0 0;
}

.page-faq .faq-fig .media-frame {
  border-radius: var(--radius-soft);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-faq .faq-fig figcaption {
  margin-top: 10px;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--slate-400);
}

/* ---------- 换设备步骤条 ---------- */
.page-faq .steps {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  counter-reset: step;
}

.page-faq .step {
  position: relative;
  padding: 16px 18px 18px;
  border-radius: var(--radius-soft);
  border: 1px solid var(--line);
  border-left: 2px solid var(--orange);
  background: var(--surface-2);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .step:hover {
  border-color: rgba(255, 107, 44, 0.45);
  border-left-color: var(--orange);
}

.page-faq .step-n {
  display: block;
  margin-bottom: 8px;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-faq .step-t {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .step-d {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- 分支说明 ---------- */
.page-faq .branch {
  padding: 20px;
  border-radius: var(--radius-block);
  border: 1px dashed var(--line-strong);
  background: rgba(5, 13, 26, 0.5);
}

.page-faq .branch-label {
  margin: 0 0 16px;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--text-soft);
}

.page-faq .branch-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-faq .branch-list li {
  display: grid;
  gap: 8px;
  justify-items: start;
}

.page-faq .branch-list p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- 版本对照 ---------- */
.page-faq .vs {
  display: grid;
  gap: 12px;
  margin-bottom: 6px;
}

.page-faq .vs-card {
  padding: 20px;
  border-radius: var(--radius-soft);
  border: 1px solid var(--line);
  background: var(--surface-2);
}

.page-faq .vs-card--beta {
  border-color: rgba(255, 107, 44, 0.40);
  background: linear-gradient(180deg, rgba(255, 107, 44, 0.10), rgba(10, 26, 47, 0.30));
}

.page-faq .vs-card--ctrl {
  border-color: rgba(37, 217, 210, 0.40);
  background: linear-gradient(180deg, rgba(37, 217, 210, 0.10), rgba(10, 26, 47, 0.30));
}

.page-faq .vs-t {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
}

.page-faq .vs-d {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-faq .vs-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 13px;
  color: var(--text-soft);
}

.page-faq .vs-list li {
  position: relative;
  padding-left: 16px;
}

.page-faq .vs-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blueprint-800);
}

.page-faq .vs-card--beta .vs-list li::before { background: var(--orange); }
.page-faq .vs-card--ctrl .vs-list li::before { background: var(--cyan); }

/* ---------- 支持面板 ---------- */
.page-faq .support-panel {
  margin-top: 26px;
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--radius-block);
  border: 1px solid rgba(255, 107, 44, 0.35);
  background:
    linear-gradient(135deg, rgba(255, 107, 44, 0.14), rgba(37, 217, 210, 0.08) 62%, transparent),
    var(--surface-2);
}

.page-faq .support-kicker {
  margin: 0 0 12px;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-faq .support-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.6vw, 24px);
  font-weight: 700;
  line-height: 1.35;
}

.page-faq .support-d {
  margin: 0 0 20px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-soft);
  max-width: 56ch;
}

.page-faq .support-list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .support-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 12px 14px;
  border-radius: var(--radius-soft);
  border: 1px solid var(--line);
  background: rgba(5, 13, 26, 0.55);
}

.page-faq .support-key {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--slate-400);
  flex: none;
}

.page-faq .support-val {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--text);
  word-break: break-all;
}

.page-faq .support-list .copy-btn { margin-left: auto; }

.page-faq .support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .vs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .branch-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
  }

  .page-faq .idx-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .page-faq .idx-link {
    border-radius: var(--radius-soft);
  }

  .page-faq .steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-title {
    max-width: 16ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .step,
  .page-faq .idx-link,
  .page-faq .faq-crumb a {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>