.page-faq {
  --faq-rail-w: 96px;
  --faq-card-bg: var(--night);
  display: block;
  padding-bottom: 96px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 28px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: 0.04em;
  color: var(--cold);
}
.page-faq .breadcrumb a {
  color: var(--cold);
  text-decoration: none;
  transition: color 180ms var(--ease-path);
}
.page-faq .breadcrumb a:hover { color: var(--neon); }
.page-faq .breadcrumb span[aria-current="page"] { color: var(--near-white); }

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 36px 0 56px;
}
.page-faq .faq-hero .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--neon);
}
.page-faq .faq-hero h1 {
  margin: 18px 0 0;
  max-width: 20ch;
  font-family: var(--font-heading);
  font-size: var(--fs-1);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.14;
  color: var(--near-white);
}
.page-faq .faq-hero .lede {
  margin: 22px 0 0;
  max-width: 64ch;
  font-size: var(--fs-5);
  line-height: 1.75;
  color: var(--cold);
}
.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin: 30px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: 0.04em;
  color: var(--violet);
}
.page-faq .faq-hero__meta strong {
  color: var(--neon);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

/* ---------- 路径轴 + 主体 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}
.page-faq .faq-axis {
  position: relative;
}
.page-faq .faq-axis__label {
  display: block;
  font-size: var(--fs-7);
  letter-spacing: 0.16em;
  color: var(--violet);
}
.page-faq .faq-axis__list {
  display: flex;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-faq .faq-axis__list::-webkit-scrollbar { display: none; }
.page-faq .faq-axis__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-chip);
  background: var(--faq-card-bg);
  color: var(--cold);
  font-size: var(--fs-7);
  white-space: nowrap;
  text-decoration: none;
  transition: color 180ms var(--ease-path), border-color 180ms var(--ease-path), background-color 180ms var(--ease-path);
}
.page-faq .faq-axis__link:hover,
.page-faq .faq-axis__link:focus-visible {
  color: var(--near-white);
  border-color: rgba(79, 227, 208, 0.5);
  background: var(--structure);
}
.page-faq .faq-axis__num {
  font-size: var(--fs-7);
  color: var(--neon);
}

/* ---------- 区块 ---------- */
.page-faq .faq-block {
  padding: 44px 0;
}
.page-faq .faq-block + .faq-block {
  border-top: 1px solid var(--line-soft);
}
.page-faq .faq-body > .faq-block:first-child { padding-top: 0; }

.page-faq .faq-block__head {
  max-width: 74ch;
  margin-bottom: 30px;
}
.page-faq .faq-block__head .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: 0.12em;
  color: var(--violet);
}
.page-faq .faq-block__head h2 {
  margin: 12px 0 0;
  font-family: var(--font-heading);
  font-size: var(--fs-3);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--near-white);
}
.page-faq .faq-block__head p {
  margin: 12px 0 0;
  font-size: var(--fs-5);
  line-height: 1.75;
  color: var(--cold);
}
.page-faq .faq-body a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 243, 235, 0.35);
  transition: color 180ms var(--ease-path), border-color 180ms var(--ease-path);
}
.page-faq .faq-body a:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

/* ---------- 标签 ---------- */
.page-faq .tag {
  display: inline-block;
  padding: 3px 8px;
  border-radius: var(--radius-chip);
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: 0.04em;
  line-height: 1.4;
}
.page-faq .tag--ok {
  color: var(--neon);
  background: rgba(79, 227, 208, 0.1);
  border: 1px solid rgba(79, 227, 208, 0.34);
}
.page-faq .tag--warn {
  color: var(--signal);
  background: rgba(255, 138, 61, 0.1);
  border: 1px solid rgba(255, 138, 61, 0.34);
}
.page-faq .tag--mute {
  color: var(--cold);
  background: rgba(154, 167, 189, 0.08);
  border: 1px solid var(--line);
}

/* ---------- 现象选择 ---------- */
.page-faq .faq-pick {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}
.page-faq .faq-pick__cards {
  display: grid;
  gap: 14px;
}
.page-faq .faq-pick__card {
  display: block;
  position: relative;
  padding: 22px 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--faq-card-bg);
  box-shadow: var(--shadow-soft);
  text-decoration: none;
  transition: transform 200ms var(--ease-path), border-color 200ms var(--ease-path), background-color 200ms var(--ease-path);
}
.page-faq .faq-pick__card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  box-shadow: var(--glow-neon);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms var(--ease-path);
}
.page-faq .faq-pick__card:hover,
.page-faq .faq-pick__card:focus-visible {
  border-color: rgba(79, 227, 208, 0.55);
  background: var(--structure);
  transform: translateY(-2px);
}
.page-faq .faq-pick__card:hover::after { opacity: 0.5; }
.page-faq .faq-pick__card h3 {
  margin: 12px 0 8px;
  font-family: var(--font-heading);
  font-size: var(--fs-4);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--near-white);
}
.page-faq .faq-pick__card p {
  margin: 0;
  font-size: var(--fs-6);
  line-height: 1.7;
  color: var(--cold);
}
.page-faq .faq-pick__go {
  display: inline-block;
  margin-top: 14px;
  font-size: var(--fs-7);
  letter-spacing: 0.06em;
  color: var(--neon);
}
.page-faq .faq-pick__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--faq-card-bg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.page-faq .faq-pick__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 设备状态图 ---------- */
.page-faq .faq-device {
  margin: 0 0 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(140deg, var(--night) 0%, var(--void) 100%);
  overflow: hidden;
}
.page-faq .faq-device img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 分步折叠面板 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}
.page-faq .faq-step {
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-step summary {
  position: relative;
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  padding: 18px 34px 18px 6px;
  cursor: pointer;
  list-style: none;
  transition: background-color 180ms var(--ease-path);
}
.page-faq .faq-step summary::-webkit-details-marker { display: none; }
.page-faq .faq-step summary:hover { background: rgba(23, 35, 61, 0.55); }
.page-faq .faq-step summary::after {
  content: "+";
  position: absolute;
  right: 10px;
  top: 20px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--neon);
}
.page-faq .faq-step details[open] summary::after { content: "−"; }
.page-faq .faq-step details[open] summary { background: rgba(23, 35, 61, 0.6); }
.page-faq .faq-step__idx {
  font-size: var(--fs-7);
  letter-spacing: 0.1em;
  color: var(--violet);
}
.page-faq .faq-step details[open] .faq-step__idx { color: var(--neon); }
.page-faq .faq-step__title {
  font-family: var(--font-heading);
  font-size: var(--fs-4);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--near-white);
}
.page-faq .faq-step__hint {
  grid-column: 2;
  font-size: var(--fs-7);
  color: var(--cold);
}
.page-faq .faq-step__body {
  padding: 2px 10px 22px 16px;
  font-size: var(--fs-6);
  line-height: 1.8;
  color: var(--cold);
}
.page-faq .faq-step__body p { margin: 0 0 10px; }
.page-faq .faq-step__body p:last-child { margin-bottom: 0; }
.page-faq .faq-step__body strong {
  font-weight: 500;
  color: var(--mist);
}

/* ---------- 登录异常原因 ---------- */
.page-faq .faq-reasons {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}
.page-faq .faq-reason {
  position: relative;
  padding: 24px 22px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--faq-card-bg);
  box-shadow: var(--shadow-soft);
}
.page-faq .faq-reason__code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(79, 227, 208, 0.35);
  border-radius: var(--radius-chip);
  font-size: var(--fs-7);
  color: var(--neon);
}
.page-faq .faq-reason h3 {
  margin: 16px 0 10px;
  font-family: var(--font-heading);
  font-size: var(--fs-4);
  font-weight: 800;
  color: var(--near-white);
}
.page-faq .faq-reason p {
  margin: 0;
  font-size: var(--fs-6);
  line-height: 1.75;
  color: var(--cold);
}
.page-faq .faq-reason__fix {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: var(--fs-7);
  letter-spacing: 0.04em;
  color: var(--signal);
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--faq-card-bg);
  overflow: hidden;
}
.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 16px;
  align-items: center;
  padding: 20px 20px;
  border-top: 1px solid var(--line-soft);
}
.page-faq .faq-contact__row:first-child { border-top: 0; }
.page-faq .faq-contact__label {
  grid-column: 1 / -1;
  font-size: var(--fs-7);
  letter-spacing: 0.14em;
  color: var(--violet);
}
.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: var(--fs-4);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--near-white);
  word-break: break-word;
}
.page-faq .faq-contact__note {
  margin: 22px 0 0;
  max-width: 74ch;
  font-size: var(--fs-6);
  line-height: 1.8;
  color: var(--cold);
}

/* ---------- 高频问题 ---------- */
.page-faq .faq-groups {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}
.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-heading);
  font-size: var(--fs-4);
  font-weight: 800;
  color: var(--near-white);
}
.page-faq .faq-group__title .mono {
  font-size: var(--fs-7);
  letter-spacing: 0.1em;
  color: var(--neon);
}
.page-faq .faq-q {
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .faq-q summary {
  position: relative;
  padding: 15px 30px 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-6);
  line-height: 1.65;
  color: var(--near-white);
  transition: color 180ms var(--ease-path);
}
.page-faq .faq-q summary::-webkit-details-marker { display: none; }
.page-faq .faq-q summary:hover { color: var(--neon); }
.page-faq .faq-q summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.4;
  color: var(--violet);
}
.page-faq .faq-q[open] summary::after { content: "−"; color: var(--neon); }
.page-faq .faq-q p {
  margin: 0 0 18px;
  padding-right: 16px;
  font-size: var(--fs-6);
  line-height: 1.78;
  color: var(--cold);
}

/* ---------- 滚动显现（渐进增强） ---------- */
.has-js .page-faq .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 380ms var(--ease-path), transform 380ms var(--ease-path);
}
.has-js .page-faq .reveal.is-shown {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-step__body { padding-left: 82px; }
  .page-faq .faq-contact__row {
    grid-template-columns: 96px minmax(0, 1fr) auto;
    padding: 22px 24px;
  }
  .page-faq .faq-contact__label { grid-column: auto; }
  .page-faq .faq-reasons { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-faq .faq-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 960px) {
  .page-faq .faq-pick {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 36px;
  }
  .page-faq .faq-reasons { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-faq .faq-groups { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 56px;
  }
  .page-faq .faq-axis {
    position: sticky;
    top: 96px;
  }
  .page-faq .faq-axis__list {
    flex-direction: column;
    gap: 0;
    margin-top: 16px;
    padding-bottom: 0;
    overflow: visible;
  }
  .page-faq .faq-axis__link {
    display: grid;
    grid-template-columns: 26px minmax(0, 1fr);
    gap: 10px;
    align-items: baseline;
    padding: 13px 0 13px 16px;
    border: 0;
    border-left: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    position: relative;
  }
  .page-faq .faq-axis__link::before {
    content: "";
    position: absolute;
    left: -3px;
    top: 19px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--violet);
    transition: background-color 180ms var(--ease-path), box-shadow 180ms var(--ease-path);
  }
  .page-faq .faq-axis__link:hover,
  .page-faq .faq-axis__link:focus-visible {
    background: transparent;
    border-left-color: var(--neon);
    border-radius: 0;
  }
  .page-faq .faq-axis__link:hover::before,
  .page-faq .faq-axis__link:focus-visible::before {
    background: var(--neon);
    box-shadow: var(--glow-neon);
  }
  .page-faq .faq-block { padding: 56px 0; }
}

@media (min-width: 1280px) {
  .page-faq .faq-block__head h2 { font-size: var(--fs-2); }
}

@media (prefers-reduced-motion: reduce) {
  .has-js .page-faq .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-faq .faq-pick__card:hover,
  .page-faq .faq-pick__card:focus-visible { transform: none; }
  .page-faq .faq-pick__card::after { transition: none; }
}
</final>