.page-faq {
  --faq-accent: var(--cyan);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
  overflow-x: hidden;
}

/* ---------- 顶部主视觉 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1rem, 3vw, 1.75rem) clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -18%;
  width: min(640px, 78vw);
  height: min(640px, 78vw);
  background: radial-gradient(circle at 50% 50%, rgba(61, 245, 228, 0.15), transparent 62%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line) 18%, var(--line) 72%, transparent);
  z-index: 0;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.page-faq .faq-hero__copy h1 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.85rem, 5.4vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--fog);
  margin: 0.5rem 0 0.9rem;
}

.page-faq .faq-hero__copy .lede {
  max-width: 42ch;
  color: var(--slate);
  font-size: clamp(0.95rem, 1.6vw, 1.075rem);
  line-height: 1.75;
  margin: 0;
}

.page-faq .jump-list {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.625rem;
}

.page-faq .jump {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--ink-850);
  color: var(--fog);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9375rem;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .jump:hover,
.page-faq .jump:focus-visible {
  border-color: var(--cyan);
  background: var(--ink-700);
  transform: translateY(-2px);
  outline: none;
}

.page-faq .jump-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.page-faq .hero-facts {
  display: grid;
  gap: 0.75rem;
  align-content: start;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(155deg, rgba(18, 43, 71, 0.92), rgba(10, 26, 46, 0.94));
}

.page-faq .fact {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(39, 65, 95, 0.7);
}

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

.page-faq .fact-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  flex: 0 0 auto;
}

.page-faq .fact-label {
  color: var(--slate);
  font-size: 0.8125rem;
  line-height: 1.55;
}

/* ---------- 工作台骨架 ---------- */
.page-faq .workbench {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  padding-top: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .trail {
  display: grid;
  gap: 1.1rem;
  align-content: start;
}

.page-faq .dial-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-850);
}

.page-faq .dial {
  position: relative;
  width: 84px;
  height: 84px;
  flex: 0 0 auto;
}

.page-faq .dial-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.page-faq .dial-track {
  fill: none;
  stroke: var(--line);
  stroke-width: 6;
}

.page-faq .dial-fill {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 314;
  stroke-dashoffset: 78;
}

.page-faq .dial-count {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--fog);
}

.page-faq .dial-label {
  margin: 0;
  color: var(--slate);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.page-faq .trail-nav {
  display: grid;
  gap: 0.4rem;
}

.page-faq .trail-link {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.6rem 0.75rem;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--slate);
  text-decoration: none;
  font-size: 0.875rem;
  line-height: 1.5;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .trail-link:hover,
.page-faq .trail-link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(61, 245, 228, 0.07);
  outline: none;
}

.page-faq .trail-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-faq .trail-note {
  margin: 0;
  padding: 0.85rem 0.9rem;
  border: 1px dashed var(--line);
  border-radius: var(--r-sm);
  color: var(--slate);
  font-size: 0.8125rem;
  line-height: 1.7;
}

/* ---------- 章节 ---------- */
.page-faq .flow {
  display: grid;
  gap: clamp(2.25rem, 5vw, 3.75rem);
  min-width: 0;
}

.page-faq .flow-section {
  --accent: var(--cyan);
  position: relative;
  scroll-margin-top: 96px;
  padding-top: 0.25rem;
  min-width: 0;
}

.page-faq .flow-section--compat { --accent: var(--gold); }
.page-faq .flow-section--fav { --accent: var(--mint); }
.page-faq .flow-section--ver { --accent: var(--slate); }

.page-faq .chapter-num {
  display: block;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(2.4rem, 7vw, 4rem);
  line-height: 0.85;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent);
  letter-spacing: 0.02em;
  margin-bottom: 0.4rem;
  transition: color 0.3s var(--ease);
}

.page-faq .flow-section.is-current .chapter-num {
  color: var(--gold);
  -webkit-text-stroke: 1px var(--gold);
}

.page-faq .flow-section h2 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.3rem, 3.4vw, 1.9rem);
  line-height: 1.3;
  color: var(--fog);
  margin: 0 0 0.7rem;
  letter-spacing: -0.01em;
}

.page-faq .flow-lede {
  margin: 0 0 1.4rem;
  color: var(--slate);
  font-size: 0.9688rem;
  line-height: 1.8;
  max-width: 60ch;
}

/* ---------- 图片 ---------- */
.page-faq .step-figure {
  margin: 0 0 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-850);
}

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

.page-faq .media-frame__caption {
  display: block;
  padding: 0.7rem 0.9rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 步骤卡 ---------- */
.page-faq .step {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-850);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .step[open] {
  border-color: rgba(61, 245, 228, 0.45);
  box-shadow: 0 0 0 1px rgba(61, 245, 228, 0.12);
}

.page-faq .step-summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem 0.75rem;
  padding: 0.9rem 1rem;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: var(--fog);
  font-size: 0.9375rem;
  line-height: 1.4;
}

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

.page-faq .step-summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--accent);
  line-height: 1;
}

.page-faq .step[open] .step-summary::after {
  content: "–";
}

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

.page-faq .step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  flex: 0 0 auto;
}

.page-faq .step-name {
  flex: 1 1 12rem;
  min-width: 0;
}

.page-faq .step-body {
  padding: 0 1rem 1rem;
  border-top: 1px solid rgba(39, 65, 95, 0.6);
}

.page-faq .step-body p {
  margin: 0.85rem 0 0.7rem;
  color: var(--slate);
  font-size: 0.9063rem;
  line-height: 1.78;
}

.page-faq .state-list {
  list-style: none;
  margin: 0 0 0.9rem;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.page-faq .state-list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--slate);
  font-size: 0.875rem;
  line-height: 1.7;
}

.page-faq .state-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.page-faq .state-list strong {
  color: var(--fog);
  font-weight: 700;
}

.page-faq .tick {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.7rem 0.35rem 0.45rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.8125rem;
  color: var(--slate);
  cursor: pointer;
  user-select: none;
}

.page-faq .tick-input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.page-faq .tick-mark {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  border: 1px solid var(--slate);
  border-radius: 4px;
  position: relative;
}

.page-faq .tick-input:checked + .tick-mark {
  border-color: var(--mint);
  background: var(--mint);
}

.page-faq .tick-input:checked + .tick-mark::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.5px;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--ink-950);
  border-bottom: 2px solid var(--ink-950);
  transform: rotate(42deg);
}

.page-faq .tick-input:focus-visible + .tick-mark {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .tick-input:checked ~ span:last-child,
.page-faq .tick:has(.tick-input:checked) {
  color: var(--mint);
  border-color: rgba(107, 232, 179, 0.45);
}

/* ---------- 图例 ---------- */
.page-faq .legend-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin-top: 1.1rem;
  padding: 0.85rem 1rem;
  border: 1px dashed var(--line);
  border-radius: var(--r-sm);
}

.page-faq .legend-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--slate);
  letter-spacing: 0.04em;
  margin-right: 0.25rem;
}

/* ---------- 收藏检索 ---------- */
.page-faq .find-grid {
  margin-bottom: 1.2rem;
}

.page-faq .find-grid .archive-card__title {
  font-size: 1.05rem;
}

.page-faq .tip-band {
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--mint);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(107, 232, 179, 0.07);
}

.page-faq .tip-band__title {
  margin: 0 0 0.5rem;
  font-weight: 700;
  color: var(--fog);
  font-size: 0.9375rem;
}

.page-faq .tip-list {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.4rem;
  color: var(--slate);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* ---------- 版本核对 ---------- */
.page-faq .verify-grid {
  margin-bottom: 1.25rem;
}

.page-faq .verify-card {
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-850);
}

.page-faq .verify-card--line {
  background: var(--ink-700);
}

.page-faq .verify-card__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 1rem;
  color: var(--fog);
}

.page-faq .verify-list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: grid;
  gap: 0.6rem;
  color: var(--slate);
  font-size: 0.875rem;
  line-height: 1.7;
}

.page-faq .verify-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}

.page-faq .verify-body {
  margin: 0 0 1rem;
  color: var(--slate);
  font-size: 0.875rem;
  line-height: 1.75;
}

.page-faq .verify-btn {
  font-size: 0.8125rem;
  padding: 0.5rem 0.9rem;
}

/* ---------- 联系卡（暖纸） ---------- */
.page-faq .helpdesk {
  padding: 1.25rem;
  border-radius: var(--r-lg);
  background: var(--paper);
  color: var(--ink-950);
  margin-bottom: 1.5rem;
}

.page-faq .helpdesk__title {
  margin: 0 0 0.55rem;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 1.125rem;
  color: var(--ink-950);
}

.page-faq .helpdesk__note {
  margin: 0 0 1rem;
  font-size: 0.8438rem;
  line-height: 1.7;
  color: rgba(5, 13, 24, 0.72);
}

.page-faq .helpdesk__rows {
  display: grid;
  gap: 0.6rem;
}

.page-faq .hrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid rgba(5, 13, 24, 0.16);
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, 0.5);
}

.page-faq .hlabel {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: rgba(5, 13, 24, 0.6);
  flex: 0 0 auto;
  min-width: 4.5rem;
}

.page-faq .hvalue {
  flex: 1 1 12rem;
  min-width: 0;
  font-size: 0.9063rem;
  font-weight: 700;
  color: var(--ink-950);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-faq .hvalue:hover {
  text-decoration: underline;
}

.page-faq .copy-btn {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.6rem;
  border: 1px solid rgba(5, 13, 24, 0.28);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-950);
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  outline: none;
}

/* ---------- 下一页去向 ---------- */
.page-faq .next-links__title {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--slate);
}

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

.page-faq .next-list .btn {
  font-size: 0.8125rem;
  padding: 0.55rem 0.95rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .jump-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .helpdesk {
    padding: 1.5rem;
  }

  .page-faq .step-summary {
    flex-wrap: nowrap;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.68fr);
    align-items: end;
  }

  .page-faq .workbench {
    grid-template-columns: 272px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .trail {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1080px) {
  .page-faq .find-grid {
    gap: 1.1rem;
  }
}

@media (max-width: 879px) {
  .page-faq .trail {
    order: -1;
  }

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

@media (max-width: 420px) {
  .page-faq .trail-nav {
    grid-template-columns: 1fr;
  }

  .page-faq .hrow {
    align-items: flex-start;
  }

  .page-faq .hlabel {
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .jump,
  .page-faq .trail-link,
  .page-faq .step,
  .page-faq .chapter-num,
  .page-faq .copy-btn {
    transition: none;
  }

  .page-faq .jump:hover,
  .page-faq .jump:focus-visible {
    transform: none;
  }
}
<<<END>>>