.page-faq {
  --faq-rail: 218px;
  --faq-gap: clamp(1.5rem, 3.2vw, 3rem);
  --faq-panel: rgba(14, 42, 68, 0.72);
  background: var(--ink-900);
  color: var(--mist);
  font-family: var(--font-body);
  letter-spacing: 0.01em;
}

.page-faq p {
  margin: 0;
}

.page-faq a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 212, 195, 0.35);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.25rem, 3vw, 2rem) 0 clamp(2.25rem, 6vw, 4.25rem);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: var(--ink-900);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(60%, 680px);
  background:
    linear-gradient(158deg, rgba(33, 212, 195, 0.16), rgba(255, 122, 61, 0.09) 58%, transparent 82%),
    var(--ink-800);
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
  border-left: 1px solid var(--line-strong);
  pointer-events: none;
}

.page-faq .faq-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-hero .crumb-link,
.page-faq .faq-hero .crumb-sep {
  color: var(--dim);
  border-bottom: 0;
}

.page-faq .faq-hero .crumb-current {
  color: var(--cyan);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
}

.page-faq .faq-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
  margin-bottom: 0.85rem;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 7vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0 0 1rem;
}

.page-faq .faq-hero .lede {
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.35rem;
}

.page-faq .faq-hero-panel {
  align-self: end;
  background: var(--faq-panel);
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--cyan);
  padding: 1rem 1.1rem 1.15rem;
}

.page-faq .faq-panel-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--dim);
  margin-bottom: 0.7rem;
}

.page-faq .faq-quicklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-quicklist li {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  background: var(--ink-900);
  padding: 0.45rem 0.6rem;
}

.page-faq .faq-quick-num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-faq .faq-quick-name {
  font-size: 0.875rem;
  color: var(--paper);
}

.page-faq .faq-panel-foot {
  margin-top: 0.7rem;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--dim);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  padding-block: clamp(1.75rem, 5vw, 3.25rem);
}

.page-faq .faq-rail {
  border-left: 1px solid var(--line);
  padding-left: 0.9rem;
}

.page-faq .faq-rail-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--dim);
  margin-bottom: 0.6rem;
}

.page-faq .faq-rail .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
}

.page-faq .faq-rail .toc-link {
  display: block;
  padding: 0.42rem 0.6rem 0.42rem 0.7rem;
  margin-left: -0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--dim);
  border: 0;
  border-left: 2px solid transparent;
  transition: color var(--step) var(--ease), border-color var(--step) var(--ease);
}

.page-faq .faq-rail .toc-link:hover,
.page-faq .faq-rail .toc-link:focus-visible {
  color: var(--paper);
  border-left-color: var(--line-strong);
}

.page-faq .faq-rail .toc-link[aria-current="true"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(33, 212, 195, 0.07);
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding-block: clamp(1.5rem, 4vw, 2.5rem);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-index {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--amber);
  margin-bottom: 0.6rem;
}

.page-faq .faq-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 4vw, 1.9rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 0.7rem;
}

.page-faq .faq-lede {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
  max-width: 60ch;
}

.page-faq .faq-note-strip {
  margin-top: 1.25rem;
  padding: 0.75rem 0.9rem;
  border-left: 3px solid var(--teal);
  background: rgba(15, 92, 99, 0.22);
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 1.25rem 0 1.5rem;
  border: 1px solid var(--line-strong);
  background: var(--ink-800);
}

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

.page-faq .faq-figure .figure-caption {
  padding: 0.55rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.03em;
  line-height: 1.6;
  color: var(--dim);
  border-top: 1px solid var(--line);
}

/* ---------- 五步清单 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faq-step;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 3.25rem minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step:first-child {
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-step-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  padding-top: 0.15rem;
}

.page-faq .faq-step-num {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
  line-height: 1;
}

.page-faq .faq-step-check {
  width: 1.05rem;
  height: 1.05rem;
  margin: 0;
  accent-color: var(--cyan);
  cursor: pointer;
}

.page-faq .faq-step-body {
  transition: opacity var(--step) var(--ease);
}

.page-faq .faq-step:has(.faq-step-check:checked) .faq-step-body {
  opacity: 0.62;
}

.page-faq .faq-step-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.01em;
  color: var(--paper);
  margin: 0 0 0.35rem;
}

.page-faq .faq-step-text {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-points {
  list-style: none;
  margin: 0.7rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.42rem;
}

.page-faq .faq-points li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.4rem;
  height: 0.4rem;
  border: 1px solid var(--cyan);
}

.page-faq .faq-step-note {
  margin-top: 0.8rem;
  padding: 0.55rem 0.75rem;
  border-left: 2px solid var(--amber);
  background: rgba(242, 184, 75, 0.08);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 回访卡片 ---------- */
.page-faq .faq-revisit-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.85rem;
  margin-top: 1.25rem;
}

.page-faq .faq-revisit-card {
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--line-strong);
  padding: 1.05rem 1rem 1.15rem;
}

.page-faq .faq-revisit-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-top: 14px solid var(--cyan);
  border-left: 14px solid transparent;
  opacity: 0.55;
}

.page-faq .faq-card-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--amber);
  margin-bottom: 0.45rem;
}

.page-faq .faq-revisit-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--paper);
  margin: 0 0 0.4rem;
}

.page-faq .faq-revisit-card p {
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 版本差异 ---------- */
.page-faq .faq-diff {
  margin-top: 1.4rem;
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-diff .compare-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-faq .faq-diff .compare-a,
.page-faq .faq-diff .compare-b {
  background: var(--ink-800);
  padding: 0.8rem 0.9rem;
}

.page-faq .faq-diff .compare-a {
  border-left: 3px solid var(--amber);
}

.page-faq .faq-diff .compare-b {
  border-left: 3px solid var(--rose);
}

.page-faq .faq-diff-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--dim);
  margin-bottom: 0.35rem;
}

.page-faq .faq-diff .compare-a .faq-diff-tag {
  color: var(--amber);
}

.page-faq .faq-diff .compare-b .faq-diff-tag {
  color: var(--rose);
}

.page-faq .faq-diff-text {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 常见问题 ---------- */
.page-faq .faq-group {
  margin-top: 1.5rem;
}

.page-faq .faq-group-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  margin: 0 0 0.35rem;
}

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

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

.page-faq .faq-item summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 0.85rem 2rem 0.85rem 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--paper);
  font-weight: 500;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0.2rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--cyan);
}

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

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

.page-faq .faq-item-a {
  padding: 0 2rem 0.95rem 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 仍需帮助 ---------- */
.page-faq .faq-help-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line-strong);
}

.page-faq .faq-help-list li {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0.75rem;
  background: var(--ink-800);
  padding: 0.85rem 0.9rem;
}

.page-faq .faq-help-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--amber);
  padding-top: 0.2rem;
}

.page-faq .faq-help-list h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--paper);
  margin: 0 0 0.2rem;
}

.page-faq .faq-help-list p {
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-contact-panel {
  margin-top: 1.5rem;
  padding: 1.1rem 1rem 1.25rem;
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--orange);
  background: var(--ink-800);
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-contact-panel .contact-row {
  display: grid;
  grid-template-columns: 5.2rem minmax(0, 1fr);
  gap: 0.75rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-contact-panel .contact-row:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-contact-panel .contact-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--dim);
  padding-top: 0.15rem;
}

.page-faq .faq-contact-panel .contact-value {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-contact-note {
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--dim);
}

.page-faq .faq-cta {
  justify-self: start;
  margin-top: 0.35rem;
  border-bottom: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-step {
    grid-template-columns: 4rem minmax(0, 1fr);
    gap: 1.1rem;
  }

  .page-faq .faq-step-num {
    font-size: 1.35rem;
  }

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

@media (min-width: 760px) {
  .page-faq .faq-diff .compare-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: end;
    gap: var(--faq-gap);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 92px;
    align-self: start;
  }
}

@media (max-width: 380px) {
  .page-faq .faq-step {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-step-rail {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 0.7rem;
    padding-top: 0;
  }

  .page-faq .faq-contact-panel .contact-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.15rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition: none !important;
  }
}

@media print {
  .page-faq {
    background: #ffffff;
    color: #10171d;
  }

  .page-faq .faq-rail,
  .page-faq .faq-hero::before,
  .page-faq .faq-figure {
    display: none !important;
  }

  .page-faq .faq-hero,
  .page-faq .faq-section {
    border-color: #c9d2da;
  }

  .page-faq .faq-hero h1,
  .page-faq .faq-section h2,
  .page-faq .faq-step-title,
  .page-faq .faq-contact-panel .contact-value {
    color: #10171d;
  }

  .page-faq .faq-step {
    break-inside: avoid;
  }

  .page-faq .faq-step-note,
  .page-faq .faq-note-strip {
    background: transparent;
  }
}
<<<END>>>