.page-faq {
  --faq-pad: clamp(26px, 5vw, 60px);
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq [id] {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

/* 顶部 */
.page-faq .faq-top {
  position: relative;
  padding: clamp(24px, 4vw, 42px) 0 clamp(30px, 5vw, 56px);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-top::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -8%;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle at 50% 50%, rgba(59, 240, 200, 0.16), transparent 62%);
  pointer-events: none;
}

.page-faq .faq-top::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(0deg, rgba(232, 242, 238, 0.05) 0 1px, transparent 1px 4px);
  opacity: 0.45;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 72%);
}

.page-faq .faq-crumb {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-crumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

.page-faq .faq-crumb span[aria-current] {
  color: var(--text);
}

.page-faq .faq-hero {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero > * {
  min-width: 0;
}

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

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.2vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.page-faq .faq-intro {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(0.94rem, 1.6vw, 1.05rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-facts li {
  position: relative;
  padding-left: 12px;
}

.page-faq .faq-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--amber);
}

/* 锚点目录 */
.page-faq .faq-toc {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(165deg, rgba(18, 48, 40, 0.92), rgba(6, 17, 15, 0.74));
  padding: 16px 16px 12px;
  box-shadow: var(--shadow-1);
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

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

.page-faq .faq-toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 4px;
  font-size: 0.86rem;
  line-height: 1.4;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid rgba(30, 74, 62, 0.5);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-faq .faq-toc li:last-child a {
  border-bottom: 0;
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  color: var(--cyan);
  padding-left: 9px;
}

.page-faq .faq-toc b {
  flex: none;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.72rem;
  color: var(--amber);
}

/* 通用区块 */
.page-faq .faq-section {
  padding: clamp(34px, 6vw, 72px) 0;
}

.page-faq .faq-section--alt {
  background: var(--ink-800);
}

.page-faq .faq-shead {
  max-width: 44em;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-shead .eyebrow {
  color: var(--amber);
}

.page-faq .faq-shead h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.2vw, 2.35rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
}

.page-faq .faq-shead p {
  margin: 12px 0 0;
  max-width: 36em;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted);
}

/* 分类卡 */
.page-faq .faq-cats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-cat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 16px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(168deg, var(--ink-700), rgba(6, 17, 15, 0.92));
  color: var(--text);
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-faq .faq-cat::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--accent, var(--cyan));
  opacity: 0.85;
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  transform: translateY(-4px);
  border-color: var(--accent, var(--cyan));
}

.page-faq .faq-cat--a {
  --accent: var(--cyan);
}

.page-faq .faq-cat--b {
  --accent: var(--amber);
}

.page-faq .faq-cat--c {
  --accent: var(--orange);
}

.page-faq .faq-cat--d {
  --accent: #7CD4B8;
}

.page-faq .faq-cat__count {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-cat__count small {
  margin-left: 6px;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-cat h3 {
  margin: 8px 0 0;
  font-size: 1.02rem;
  font-weight: 700;
}

.page-faq .faq-cat p {
  margin: 0;
  font-size: 0.83rem;
  line-height: 1.68;
  color: var(--muted);
}

/* 五步流程 */
.page-faq .faq-flow {
  position: relative;
  padding: clamp(40px, 7vw, 84px) 0;
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(245, 166, 59, 0.1), transparent 58%),
    linear-gradient(180deg, rgba(6, 17, 15, 0) 0%, rgba(12, 31, 26, 0.96) 12%, rgba(12, 31, 26, 0.96) 88%, rgba(6, 17, 15, 0) 100%);
}

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(6, 17, 15, 0.62);
}

.page-faq .faq-step__head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-faq .faq-step__dot {
  flex: none;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--cyan);
  border: 1px solid rgba(59, 240, 200, 0.55);
  background: rgba(59, 240, 200, 0.1);
}

.page-faq .faq-step__state {
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 9px;
}

.page-faq .faq-step h3 {
  margin: 12px 0 0;
  font-size: 0.98rem;
  font-weight: 700;
}

.page-faq .faq-step p {
  margin: 8px 0 0;
  font-size: 0.82rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-step__hint {
  border-left: 2px solid var(--amber);
  background: rgba(245, 166, 59, 0.09);
  padding: 8px 10px;
  color: var(--text) !important;
}

.page-faq .faq-step--note .faq-step__dot {
  color: var(--amber);
  border-color: rgba(245, 166, 59, 0.55);
  background: rgba(245, 166, 59, 0.12);
}

.page-faq .faq-step--done .faq-step__dot {
  color: var(--orange);
  border-color: rgba(255, 107, 53, 0.55);
  background: rgba(255, 107, 53, 0.12);
}

.page-faq .faq-flow__more {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 46em;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-flow__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 240, 200, 0.45);
  padding-bottom: 1px;
}

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

/* 图文分栏 */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
}

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

.page-faq .faq-shot {
  margin: 0;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  filter: brightness(0.88) saturate(1.05);
  object-fit: cover;
}

.page-faq .faq-shot figcaption {
  margin-top: 10px;
  font-size: 0.78rem;
  line-height: 1.66;
  color: var(--muted);
}

/* 问答手风琴 */
.page-faq .faq-list {
  border-top: 1px solid var(--line-soft);
}

.page-faq details.faq-q {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq details.faq-q > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 4px;
  list-style: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.58;
  color: var(--text);
  transition: color 0.2s var(--ease);
}

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

.page-faq details.faq-q > summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.35;
  color: var(--cyan);
  transition: transform 0.24s var(--ease), color 0.24s var(--ease);
}

.page-faq details.faq-q[open] > summary::after {
  transform: rotate(45deg);
  color: var(--amber);
}

.page-faq details.faq-q > summary:hover,
.page-faq details.faq-q > summary:focus-visible {
  color: var(--cyan);
  outline: none;
}

.page-faq .faq-q__a {
  margin: 0;
  padding: 0 4px 18px 4px;
  max-width: 40em;
  font-size: 0.89rem;
  line-height: 1.82;
  color: var(--muted);
}

/* 设备清单 */
.page-faq .faq-devices {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 0;
}

.page-faq .faq-device {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(12, 31, 26, 0.55);
}

.page-faq .faq-device dt {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-faq .faq-device dd {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.78;
  color: var(--muted);
}

/* 人工支持 */
.page-faq .faq-support {
  padding: clamp(34px, 6vw, 78px) 0 clamp(40px, 7vw, 90px);
  background: linear-gradient(180deg, rgba(12, 31, 26, 0.96), var(--ink-900));
}

.page-faq .faq-banner {
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  filter: brightness(0.85) saturate(1.05);
  object-fit: cover;
}

.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding: clamp(20px, 4vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, rgba(18, 48, 40, 0.92), rgba(6, 17, 15, 0.86));
  box-shadow: var(--shadow-1);
}

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

.page-faq .faq-contact__item {
  display: grid;
  gap: 4px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(30, 74, 62, 0.6);
}

.page-faq .faq-contact__label {
  display: block;
  margin: 0 0 4px;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: clamp(0.98rem, 2vw, 1.16rem);
  color: var(--text);
  word-break: break-all;
}

.page-faq .faq-contact__btn {
  margin-top: 18px;
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .faq-contact__list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-contact__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 2px;
  background: var(--orange);
}

/* 响应式 */
@media (min-width: 620px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(250px, 0.75fr);
    align-items: end;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-shot {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-device {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 4px 22px;
    align-items: baseline;
  }

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

@media (min-width: 980px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
  }

  .page-faq .faq-step {
    padding: 18px 14px;
  }

  .page-faq .faq-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 34px;
    left: 100%;
    width: 12px;
    height: 1px;
    background: var(--line-soft);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 420px) {
  .page-faq .faq-step__head {
    flex-wrap: wrap;
    gap: 8px;
  }

  .page-faq .faq-cat__count {
    font-size: 1.65rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-toc a,
  .page-faq details.faq-q > summary::after {
    transition: none;
  }

  .page-faq .faq-cat:hover {
    transform: none;
  }
}
<<<END>>>