.page-faq {
  --faq-gap: clamp(1.5rem, 4vw, 3.5rem);
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

/* 面包屑 */
.page-faq .breadcrumbs {
  padding-top: clamp(1.1rem, 3vw, 1.9rem);
}
.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--ink-dim);
}
.page-faq .breadcrumbs li {
  display: inline-flex;
  align-items: center;
}
.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: .45rem;
  color: var(--sage);
  opacity: .7;
}
.page-faq .breadcrumbs a {
  color: var(--ink-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-faq .breadcrumbs [aria-current="page"] {
  color: var(--cyan);
}

/* 首屏 */
.page-faq .faq-hero {
  padding-block: clamp(1.4rem, 3.5vw, 2.6rem) clamp(2.4rem, 6vw, 4.4rem);
}
.page-faq .faq-hero-inner {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
}
.page-faq .faq-hero h1 {
  margin: .55rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6.2vw, 3.7rem);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--ink);
}
.page-faq .faq-lede {
  margin: 1.1rem 0 0;
  max-width: 48ch;
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-faq .faq-quickfacts {
  display: grid;
  gap: .7rem;
  margin: clamp(1.5rem, 3vw, 2rem) 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.page-faq .faq-quickfacts li {
  padding-left: .7rem;
  border-left: 2px solid var(--amber);
  font-size: .85rem;
  line-height: 1.6;
  color: var(--ink-dim);
}
.page-faq .faq-quickfacts .num {
  color: var(--ink);
  font-size: .95rem;
  font-weight: 700;
}

.page-faq .faq-hero-figure {
  margin: 0;
  padding: 8px;
  background: linear-gradient(155deg, rgba(53, 242, 208, .13), rgba(255, 177, 59, .07));
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}
.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
}
.page-faq .faq-hero-figure figcaption {
  margin-top: .65rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .04em;
  line-height: 1.6;
  color: var(--sage);
}

/* 主体布局 */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
}
.page-faq .faq-rail-title {
  margin: 0 0 .6rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--sage);
}
.page-faq .faq-rail ol {
  display: grid;
  gap: .3rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-rail a {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  padding: .5rem .6rem;
  font-size: .84rem;
  line-height: 1.5;
  color: var(--ink-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: var(--radius);
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.page-faq .faq-rail a:hover {
  color: var(--ink);
  border-left-color: var(--cyan);
  background: rgba(53, 242, 208, .07);
}
.page-faq .faq-rail a:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}
.page-faq .faq-rail .num {
  flex: none;
  font-size: .72rem;
  color: var(--cyan);
}

/* 章节 */
.page-faq .faq-block {
  padding-block: clamp(2rem, 5vw, 3.25rem);
  border-top: 1px solid var(--line);
}
.page-faq .faq-flow > .faq-block:first-child {
  padding-top: 0;
  border-top: 0;
}
.page-faq .faq-block h2 {
  margin: .45rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  line-height: 1.18;
  letter-spacing: -.005em;
  color: var(--ink);
}
.page-faq .faq-block-lede {
  margin: .8rem 0 0;
  max-width: 62ch;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* 步骤 */
.page-faq .faq-steps {
  display: grid;
  gap: 1rem;
  margin: clamp(1.4rem, 3vw, 2.1rem) 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-steps > li {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .85rem;
  padding: clamp(1rem, 2.6vw, 1.45rem);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.page-faq .faq-steps > li::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 242, 208, 0));
  opacity: .85;
}
.page-faq .faq-step-num {
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}
.page-faq .faq-steps h3 {
  margin: 0 0 .45rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}
.page-faq .faq-steps p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.78;
  color: var(--ink-dim);
}
.page-faq .faq-steps p + p {
  margin-top: .5rem;
}

/* 版本对照 */
.page-faq .faq-compare {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.4rem, 3vw, 2.1rem);
}
.page-faq .faq-compare-card {
  padding: clamp(1rem, 2.6vw, 1.5rem);
  background: var(--raise);
  border: 1px solid var(--line);
  border-top: 3px solid var(--amber);
  border-radius: var(--radius);
}
.page-faq .faq-compare-card--alt {
  background: var(--panel);
  border-top-color: var(--cyan);
}
.page-faq .faq-tagline {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--sage);
}
.page-faq .faq-compare-card h3 {
  margin: .55rem 0 .7rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}
.page-faq .faq-bullets {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .5rem;
}
.page-faq .faq-bullets li {
  position: relative;
  padding-left: 1rem;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--ink-dim);
}
.page-faq .faq-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 1px;
  background: var(--amber);
}
.page-faq .faq-compare-card--alt .faq-bullets li::before {
  background: var(--cyan);
}

.page-faq .faq-device {
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  padding: 6px;
  border: 1px solid var(--line);
  background: rgba(18, 61, 50, .55);
}
.page-faq .faq-device img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-faq .faq-device figcaption {
  margin-top: .6rem;
  padding: 0 .35rem .35rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  line-height: 1.6;
  color: var(--sage);
}
.page-faq .faq-advice {
  margin: 1rem 0 0;
  padding-left: .9rem;
  border-left: 2px solid var(--violet);
  font-size: .9rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* 标签地图 */
.page-faq .faq-tagmap {
  display: grid;
  gap: 1.25rem;
  margin-top: clamp(1.4rem, 3vw, 2.1rem);
}
.page-faq .faq-tagmap-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--sage);
}
.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: .65rem 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-chips li {
  padding: .32rem .7rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .02em;
  color: var(--bg);
  background: var(--cyan);
  border-radius: var(--radius);
}
.page-faq .faq-chips--ghost li {
  color: var(--amber);
  background: transparent;
  border: 1px solid rgba(255, 177, 59, .45);
}

.page-faq .faq-scenario {
  margin-top: clamp(1.5rem, 3.4vw, 2.2rem);
  padding: clamp(1.1rem, 3vw, 1.7rem);
  background: linear-gradient(150deg, rgba(53, 242, 208, .1), rgba(255, 177, 59, .05));
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}
.page-faq .faq-scenario h3 {
  margin: .5rem 0 .8rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}
.page-faq .faq-scenario-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .55rem;
  counter-reset: scenario;
}
.page-faq .faq-scenario-steps li {
  position: relative;
  counter-increment: scenario;
  padding-left: 1.9rem;
  font-size: .9rem;
  line-height: 1.78;
  color: var(--ink-soft);
}
.page-faq .faq-scenario-steps li::before {
  content: counter(scenario, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .12em;
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--cyan);
}
.page-faq .faq-scenario-note {
  margin: 1rem 0 0;
  padding-top: .8rem;
  border-top: 1px solid var(--line);
  font-size: .84rem;
  line-height: 1.75;
  color: var(--ink-dim);
}

/* 问答 */
.page-faq .faq-accordion {
  display: grid;
  gap: .6rem;
  margin-top: clamp(1.4rem, 3vw, 2.1rem);
}
.page-faq .faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: background .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .faq-item[open] {
  background: var(--raise);
  border-color: var(--line-strong);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .95rem 1rem;
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--cyan);
}
.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--amber);
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: -2px;
}
.page-faq .faq-answer {
  padding: 0 1rem .95rem;
}
.page-faq .faq-answer p {
  margin: 0;
  font-size: .89rem;
  line-height: 1.8;
  color: var(--ink-dim);
}

/* 人工协助 */
.page-faq .faq-contact {
  margin-top: clamp(1.2rem, 3vw, 1.75rem);
  padding: clamp(1.1rem, 3vw, 1.6rem);
  background: rgba(53, 242, 208, .06);
  border: 1px solid rgba(53, 242, 208, .35);
  border-left: 3px solid var(--cyan);
}
.page-faq .faq-contact-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--sage);
}
.page-faq .faq-contact-value {
  margin: .5rem 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 3.4vw, 1.3rem);
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
  word-break: break-all;
}
.page-faq .faq-contact-note {
  margin: .55rem 0 0;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--ink-dim);
}
.page-faq .faq-assist-action {
  margin: 1rem 0 0;
}

/* 收尾链接 */
.page-faq .faq-next {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  padding-top: clamp(1.2rem, 3vw, 1.8rem);
  border-top: 1px solid var(--line-strong);
}
.page-faq .faq-next-text {
  margin: 0;
  max-width: 52ch;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--ink-dim);
}
.page-faq .faq-next-links {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

/* 断点 */
@media (min-width: 600px) {
  .page-faq .faq-quickfacts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .faq-compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-tagmap {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-next {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.75rem);
  }
  .page-faq .faq-rail {
    position: sticky;
    top: clamp(4.5rem, 8vw, 6.5rem);
    align-self: start;
  }
  .page-faq .faq-rail-title {
    margin-bottom: .8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail a,
  .page-faq .breadcrumbs a,
  .page-faq .faq-item {
    transition: none;
  }
}
<<<END>>>