.page-faq {
  --faq-step-pad: clamp(1.75rem, 3vw, 2.5rem);
  --faq-rail: 2px;
  background-color: var(--ink);
  color: var(--paper);
  font-size: var(--fs-body);
}

.page-faq .section {
  padding-block: clamp(2.5rem, 5vw, 4.25rem);
}

.page-faq h2 {
  margin: 0.5rem 0 0.9rem;
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 0.03em;
}

.page-faq h3 {
  margin: 0 0 0.6rem;
  font-size: var(--fs-h4);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.page-faq a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

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

.page-faq .sec-head {
  max-width: 48em;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .sec-lede {
  margin: 0 0 1.25rem;
  max-width: 40em;
  color: var(--muted);
  line-height: 1.9;
}

.page-faq .note-line {
  margin: 1rem 0 0;
  font-size: var(--fs-note);
  line-height: 1.8;
  color: var(--muted-deep);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-top: calc(var(--header-h) + clamp(1.75rem, 4vw, 3rem));
  padding-bottom: clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--rule);
  background:
    radial-gradient(72% 84% at 86% 6%, rgba(53, 240, 208, 0.11), transparent 66%),
    linear-gradient(180deg, rgba(18, 38, 58, 0.78), transparent 82%);
}

.page-faq .faq-hero h1 {
  margin: 0.55rem 0 1.05rem;
  max-width: 17em;
  font-size: var(--fs-display);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: 0.035em;
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 40em;
  color: var(--muted);
  line-height: 1.9;
}

.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.7rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tags li {
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--cyan);
  background: rgba(18, 38, 58, 0.6);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  color: var(--paper);
}

/* ---------- 三步上手 ---------- */

.page-faq .steps {
  position: relative;
  margin: clamp(1.75rem, 3.5vw, 2.75rem) 0 0;
  padding: 0 0 0 var(--faq-step-pad);
  list-style: none;
}

.page-faq .steps::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9rem;
  bottom: 1.6rem;
  width: var(--faq-rail);
  background: linear-gradient(180deg, var(--cyan) 0%, var(--cyan-dim) 72%, rgba(31, 169, 143, 0.12) 100%);
}

.page-faq .step {
  position: relative;
  padding-bottom: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
  border-bottom: 1px dashed var(--rule);
}

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

.page-faq .step::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--faq-step-pad));
  top: 1rem;
  width: var(--faq-step-pad);
  height: 1px;
  background: var(--rule);
}

.page-faq .step-num {
  display: block;
  margin-bottom: 0.55rem;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .step-text {
  margin: 0;
  max-width: 44em;
  color: var(--muted);
  line-height: 1.9;
}

.page-faq .step-tip {
  display: inline-block;
  margin: 1rem 0 0;
  padding: 0.35rem 0.7rem;
  background: var(--cream);
  color: var(--shadow);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  box-shadow: 3px 3px 0 rgba(5, 16, 26, 0.72);
  transform: rotate(-0.7deg);
}

.page-faq .step-more {
  margin: 1.5rem 0 0;
  font-size: var(--fs-note);
  line-height: 1.8;
}

.page-faq .faq-flow {
  margin: clamp(1.75rem, 3.5vw, 2.75rem) 0 0;
}

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

/* ---------- 找回收藏 ---------- */

.page-faq .faq-recover {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: linear-gradient(180deg, var(--ink-soft), rgba(18, 38, 58, 0.55));
}

.page-faq .recover-grid {
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.75rem);
}

.page-faq .recover-card {
  padding: clamp(1.15rem, 2.5vw, 1.75rem);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--cyan-dim);
  background: var(--ink);
}

.page-faq .card-text {
  margin: 0.6rem 0 0;
  color: var(--muted);
  line-height: 1.9;
}

.page-faq .mini-list {
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-mini;
}

.page-faq .mini-list li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 0.6rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.85;
  counter-increment: faq-mini;
}

.page-faq .mini-list li:last-child {
  margin-bottom: 0;
}

.page-faq .mini-list li::before {
  content: counter(faq-mini, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1em;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--cyan-dim);
}

.page-faq .recover-note {
  margin: 1.1rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .recover-fallback {
  margin-top: clamp(1.25rem, 2.5vw, 2rem);
  padding: clamp(1.15rem, 2.5vw, 1.75rem);
  border-left: 3px solid var(--cyan);
}

.page-faq .recover-fallback p {
  margin: 0 0 0.8rem;
  color: var(--muted);
  line-height: 1.9;
}

.page-faq .fallback-link {
  margin: 0;
  font-size: var(--fs-note);
}

/* ---------- 手机版导航 ---------- */

.page-faq .split {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
}

.page-faq .split-media {
  margin: 0;
}

.page-faq .split-main h2 {
  margin-top: 0.4rem;
}

/* ---------- 版本对照 ---------- */

.page-faq .faq-versions {
  border-top: 1px solid var(--rule);
}

.page-faq .version-split {
  display: grid;
  gap: 1px;
  border: 1px solid var(--rule);
  background: var(--rule);
}

.page-faq .version-col {
  padding: clamp(1.1rem, 2.2vw, 1.6rem);
  background: var(--ink-soft);
}

.page-faq .version-col--old {
  background: linear-gradient(180deg, rgba(30, 58, 85, 0.75), var(--ink-soft));
}

.page-faq .version-col--new {
  background:
    linear-gradient(180deg, rgba(255, 163, 60, 0.13), transparent 68%),
    var(--ink-soft);
  box-shadow: inset 0 3px 0 var(--amber);
}

.page-faq .version-col h3 {
  margin-top: 0.9rem;
}

.page-faq .version-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .version-list li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.55rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .version-list li:last-child {
  margin-bottom: 0;
}

.page-faq .version-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.45rem;
  height: 2px;
  background: var(--amber);
  opacity: 0.8;
}

.page-faq .version-foot {
  margin: clamp(1rem, 2vw, 1.5rem) 0 0;
  max-width: 46em;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.9;
}

/* ---------- 常见问题 ---------- */

.page-faq .faq-cols {
  display: grid;
  gap: 0 clamp(1rem, 2.5vw, 2rem);
}

.page-faq .qa {
  margin-bottom: 0.75rem;
  border: 1px solid var(--rule);
  background: rgba(18, 38, 58, 0.62);
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(255, 163, 60, 0.5);
  background: var(--ink-soft);
}

.page-faq .qa summary {
  position: relative;
  padding: 0.95rem 2.5rem 0.95rem 1rem;
  list-style: none;
  cursor: pointer;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--paper);
}

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

.page-faq .qa summary::after {
  content: "+";
  position: absolute;
  right: 0.95rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .qa[open] summary::after {
  content: "−";
  color: var(--amber);
}

.page-faq .qa[open] summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75rem;
  bottom: 0.75rem;
  width: 3px;
  background: var(--amber);
}

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

.page-faq .qa-body {
  margin: 0;
  padding: 0 1rem 1.1rem 1rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.85;
}

/* ---------- 还没解决 ---------- */

.page-faq .help-block {
  padding-left: clamp(1rem, 2.5vw, 1.6rem);
  border-left: 2px solid var(--cyan);
}

.page-faq .help-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .help-list li {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--rule);
  background: rgba(18, 38, 58, 0.7);
  font-size: 0.9375rem;
  color: var(--paper);
}

.page-faq .help-list li .mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--cyan-dim);
}

.page-faq .help-block .btn {
  margin-top: 1.4rem;
}

/* ---------- 收尾 ---------- */

.page-faq .faq-close {
  padding-block: clamp(2.25rem, 4.5vw, 3.5rem);
  border-top: 1px solid var(--rule);
  background: linear-gradient(180deg, transparent, rgba(5, 16, 26, 0.7));
}

.page-faq .faq-close p {
  margin: 0 0 1.2rem;
  max-width: 22em;
  font-size: var(--fs-h3);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-faq .faq-close .btn {
  display: inline-flex;
}

/* ---------- 响应式 ---------- */

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

@media (min-width: 900px) {
  .page-faq .split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

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

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

@media (max-width: 480px) {
  .page-faq {
    --faq-step-pad: 1.25rem;
  }

  .page-faq .faq-tags li,
  .page-faq .help-list li {
    font-size: 0.75rem;
  }

  .page-faq .qa summary {
    padding-right: 2.1rem;
  }

  .page-faq .step-tip {
    transform: none;
  }
}
<<<END>>>