.page-faq {
  --faq-rad: 0.9rem;
  --faq-edge: rgba(30, 74, 109, 0.72);
  position: relative;
  isolation: isolate;
  background:
    radial-gradient(1100px 520px at 84% -10%, rgba(34, 211, 238, 0.12), transparent 62%),
    radial-gradient(860px 480px at -8% 34%, rgba(249, 115, 22, 0.06), transparent 58%),
    var(--color-space);
  color: var(--color-star);
}

.page-faq::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.7), transparent);
  pointer-events: none;
}

.page-faq .content-shell {
  padding-block: clamp(1.5rem, 3.5vw, 2.5rem) clamp(3rem, 7vw, 5rem);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-mist);
}

.page-faq .breadcrumb-list > li + li::before {
  content: "/";
  margin-inline: 0.45rem;
  color: var(--color-line);
}

.page-faq .breadcrumb-link {
  color: var(--color-cyan-soft);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq .breadcrumb-link:hover,
.page-faq .breadcrumb-link:focus-visible {
  color: var(--color-cyan);
  text-decoration: underline;
}

/* ---------- 布局骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 2.25rem);
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

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

/* ---------- 左侧诊断目录 ---------- */
.page-faq .faq-rail {
  position: relative;
  min-width: 0;
  padding: 0.9rem 1rem 1rem;
  border: 1px solid var(--faq-edge);
  border-radius: var(--faq-rad);
  background: linear-gradient(180deg, rgba(11, 42, 74, 0.92), rgba(6, 20, 38, 0.62));
}

.page-faq .faq-rail__title {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-cyan);
}

.page-faq .faq-rail__nav {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.35rem;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid rgba(30, 74, 109, 0.9);
  border-radius: 999px;
  background: rgba(6, 20, 38, 0.62);
  color: var(--color-mist);
  font-size: 0.8rem;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--color-star);
  border-color: var(--color-cyan);
  background: rgba(34, 211, 238, 0.12);
}

.page-faq .faq-rail__idx {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-cyan);
}

.page-faq .faq-rail__meta {
  display: none;
  align-items: center;
  gap: 0.45rem;
  margin: 0.9rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(30, 74, 109, 0.7);
  font-size: 0.74rem;
  color: var(--color-mist);
}

/* ---------- 首屏 ---------- */
.page-faq .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-cyan);
}

.page-faq .faq-hero {
  padding-bottom: clamp(1.5rem, 3vw, 2.25rem);
  border-bottom: 1px solid var(--faq-edge);
}

.page-faq .faq-hero h1 {
  max-width: 26ch;
  margin: 0.7rem 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.65rem, 4.2vw, 2.85rem);
  line-height: 1.25;
  letter-spacing: 0.035em;
  color: var(--color-star);
}

.page-faq .faq-hero__lede {
  max-width: 64ch;
  margin: 1rem 0 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-mist);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.page-faq .faq-jump a {
  padding: 0.42rem 0.85rem;
  border: 1px solid rgba(34, 211, 238, 0.38);
  border-radius: 999px;
  background: rgba(11, 42, 74, 0.6);
  color: var(--color-cyan-soft);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--color-cyan);
  background: rgba(34, 211, 238, 0.16);
  transform: translateY(-1px);
}

.page-faq .faq-meter {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.9rem 1.2rem;
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
}

.page-faq .faq-meter__item {
  padding: 0.1rem 0 0.1rem 0.8rem;
  border-left: 2px solid var(--color-cyan);
}

.page-faq .faq-meter__item:nth-child(2) {
  border-left-color: var(--color-cyan-soft);
}

.page-faq .faq-meter__item:nth-child(3) {
  border-left-color: var(--color-orange);
}

.page-faq .faq-meter__item:nth-child(4) {
  border-left-color: var(--color-green);
}

.page-faq .faq-meter__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--color-cyan);
}

.page-faq .faq-meter__item:nth-child(3) .faq-meter__num {
  color: var(--color-orange);
}

.page-faq .faq-meter__item:nth-child(4) .faq-meter__num {
  color: var(--color-green);
  font-size: 1.15rem;
}

.page-faq .faq-meter__label {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--color-mist);
}

/* ---------- 章节 ---------- */
.page-faq .faq-block {
  padding-block: clamp(2.25rem, 5vw, 3.5rem);
  border-bottom: 1px solid rgba(30, 74, 109, 0.55);
  scroll-margin-top: 6rem;
}

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

.page-faq .faq-block h2 {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.3rem, 2.7vw, 1.95rem);
  line-height: 1.35;
  letter-spacing: 0.04em;
  color: var(--color-star);
}

.page-faq .faq-block__lede {
  max-width: 66ch;
  margin: 0.85rem 0 0;
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--color-mist);
}

.page-faq .faq-inline-link {
  color: var(--color-cyan-soft);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--color-cyan);
}

/* ---------- 媒体框 ---------- */
.page-faq .media-frame {
  margin: 1.5rem 0 0;
  overflow: hidden;
  border: 1px solid rgba(30, 74, 109, 0.75);
  border-radius: var(--faq-rad);
  background: var(--color-rail);
}

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

.page-faq .media-frame figcaption {
  padding: 0.7rem 1rem;
  border-top: 1px solid rgba(30, 74, 109, 0.6);
  background: rgba(11, 42, 74, 0.7);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--color-mist);
}

/* ---------- 状态点 ---------- */
.page-faq .signal-dot {
  display: inline-block;
  flex: 0 0 auto;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-mist);
}

.page-faq .signal-dot--green {
  background: var(--color-green);
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.55);
}

.page-faq .signal-dot--cyan {
  background: var(--color-cyan);
  box-shadow: 0 0 10px rgba(34, 211, 238, 0.55);
}

.page-faq .signal-dot--orange {
  background: var(--color-orange);
  box-shadow: 0 0 10px rgba(249, 115, 22, 0.5);
}

.page-faq .signal-dot--rose {
  background: var(--color-rose);
  box-shadow: 0 0 10px rgba(251, 113, 133, 0.5);
}

/* ---------- 编号步骤卡 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-step {
  position: relative;
  background: linear-gradient(135deg, rgba(16, 54, 92, 0.9) 0%, rgba(11, 42, 74, 0.55) 100%);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: background 0.22s var(--ease);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-cyan), transparent);
}

.page-faq .faq-step__details {
  display: block;
}

.page-faq .faq-step__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.8rem;
  padding: 0.95rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-step__summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--color-cyan);
}

.page-faq .faq-step__details[open] > .faq-step__summary::after {
  content: "–";
}

.page-faq .faq-step__summary .status-pill {
  display: none;
}

.page-faq .faq-step__num {
  padding: 0.1rem 0.45rem;
  border: 1px solid rgba(34, 211, 238, 0.4);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--color-cyan);
}

.page-faq .faq-step__title {
  font-size: 0.95rem;
  line-height: 1.6;
  font-weight: 500;
  color: var(--color-star);
}

.page-faq .faq-step__details[open] > .faq-step__summary .faq-step__title {
  color: var(--color-cyan-soft);
}

.page-faq .faq-step__body {
  padding: 0.1rem 1.1rem 1.2rem;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--color-mist);
}

.page-faq .faq-step__body p {
  margin: 0;
}

.page-faq .faq-step__list {
  list-style: none;
  margin: 0.65rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.42rem;
}

.page-faq .faq-step__list li {
  position: relative;
  padding-left: 1.05rem;
}

.page-faq .faq-step__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--color-cyan);
  opacity: 0.85;
}

.page-faq .faq-step__done {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-top: 0.9rem;
  padding: 0.58rem 0.8rem;
  border-left: 2px solid var(--color-green);
  border-radius: 0 0.45rem 0.45rem 0;
  background: rgba(52, 211, 153, 0.08);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--color-star);
}

.page-faq .faq-step__done .signal-dot {
  margin-top: 0.5em;
}

/* ---------- 刷新诊断面板 ---------- */
.page-faq .faq-diag {
  margin-top: 1.6rem;
  border: 1px solid var(--faq-edge);
  border-radius: var(--faq-rad);
  background: linear-gradient(180deg, rgba(11, 42, 74, 0.85), rgba(6, 20, 38, 0.75));
  overflow: hidden;
}

.page-faq .faq-diag__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.35rem 0.75rem;
  padding: 0.9rem 1.05rem;
  align-items: start;
}

.page-faq .faq-diag__row + .faq-diag__row {
  border-top: 1px solid rgba(30, 74, 109, 0.6);
}

.page-faq .faq-diag__row .signal-dot {
  margin-top: 0.45rem;
}

.page-faq .faq-diag__code {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--color-cyan);
}

.page-faq .faq-diag__text {
  grid-column: 2;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--color-mist);
}

.page-faq .faq-diag__row:nth-child(2) .faq-diag__code {
  color: var(--color-orange);
}

.page-faq .faq-diag__row:nth-child(3) .faq-diag__code {
  color: var(--color-cyan-soft);
}

.page-faq .faq-diag__row:nth-child(4) .faq-diag__code {
  color: var(--color-rose);
}

/* ---------- 流程编号列表 ---------- */
.page-faq .faq-flow {
  counter-reset: flow;
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-flow li {
  counter-increment: flow;
  position: relative;
  padding-left: 2.4rem;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--color-mist);
}

.page-faq .faq-flow li::before {
  content: counter(flow, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1rem;
  display: grid;
  place-items: center;
  width: 1.6rem;
  height: 1.6rem;
  border: 1px solid rgba(34, 211, 238, 0.35);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-cyan);
}

/* ---------- 兼容矩阵 ---------- */
.page-faq .faq-matrix {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-faq .faq-matrix__card {
  padding: 1rem 1.1rem 1.05rem;
  border: 1px solid var(--faq-edge);
  border-left: 2px solid var(--color-cyan);
  border-radius: 0 0.7rem 0.7rem 0;
  background: rgba(11, 42, 74, 0.5);
}

.page-faq .faq-matrix__card:nth-child(2) {
  border-left-color: var(--color-orange);
}

.page-faq .faq-matrix__card:nth-child(3) {
  border-left-color: var(--color-cyan-soft);
}

.page-faq .faq-matrix__card:nth-child(4) {
  border-left-color: var(--color-green);
}

.page-faq .faq-matrix__os {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--color-cyan-soft);
}

.page-faq .faq-matrix__scene {
  margin: 0.5rem 0 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--color-star);
}

.page-faq .faq-matrix__fix {
  margin: 0.4rem 0 0;
  font-size: 0.84rem;
  line-height: 1.8;
  color: var(--color-mist);
}

/* ---------- 常见问题分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  margin-top: 1.6rem;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.3rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(30, 74, 109, 0.7);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--color-cyan-soft);
}

.page-faq .faq-qa__item {
  border-bottom: 1px solid rgba(30, 74, 109, 0.45);
}

.page-faq .faq-qa__item summary {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  padding: 0.7rem 0;
  cursor: pointer;
  list-style: none;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--color-star);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-qa__item summary::before {
  content: "Q";
  flex: 0 0 auto;
  margin-top: 0.15rem;
  padding: 0 0.25rem;
  border: 1px solid rgba(34, 211, 238, 0.35);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.5;
  color: var(--color-cyan);
}

.page-faq .faq-qa__item summary:hover,
.page-faq .faq-qa__item[open] > summary {
  color: var(--color-cyan-soft);
}

.page-faq .faq-qa__item p {
  margin: 0 0 0.85rem 1.6rem;
  font-size: 0.85rem;
  line-height: 1.85;
  color: var(--color-mist);
}

/* ---------- 反馈通道 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.page-faq .faq-contact__primary {
  position: relative;
  padding: 1.3rem 1.3rem 1.45rem;
  background: linear-gradient(140deg, rgba(16, 54, 92, 0.94), rgba(11, 42, 74, 0.6));
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-faq .faq-contact__primary h3 {
  margin: 0 0 0.55rem;
  font-size: 1.02rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-star);
}

.page-faq .faq-contact__primary p {
  margin: 0 0 1.1rem;
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--color-mist);
}

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

.page-faq .faq-contact__list li {
  display: grid;
  gap: 0.2rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--faq-edge);
  border-left: 2px solid var(--color-cyan);
  border-radius: 0 0.6rem 0.6rem 0;
  background: rgba(11, 42, 74, 0.5);
}

.page-faq .faq-contact__list li:nth-child(2) {
  border-left-color: var(--color-green);
}

.page-faq .faq-contact__label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-cyan);
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: 0.94rem;
  color: var(--color-star);
  word-break: break-word;
}

.page-faq .faq-contact__hint {
  font-size: 0.75rem;
  color: var(--color-mist);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-step__summary {
    grid-template-columns: auto minmax(0, 1fr) auto auto;
  }

  .page-faq .faq-step__summary .status-pill {
    display: inline-flex;
  }

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

  .page-faq .faq-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.6rem 2rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    gap: 1.2rem;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-layout {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 6rem;
  }

  .page-faq .faq-rail__nav {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    border-radius: 0.45rem;
    white-space: normal;
  }

  .page-faq .faq-rail__meta {
    display: flex;
  }

  .page-faq .faq-hero__lede {
    font-size: 1.02rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a:hover,
  .page-faq .faq-jump a:focus-visible {
    transform: none;
  }

  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>