.page-faq {
  --faq-chip: rgba(14, 36, 80, 0.62);
  --faq-notch: 18px;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 30px 0 40px;
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(53, 255, 139, 0.14), transparent 58%),
    radial-gradient(80% 70% at 4% 92%, rgba(155, 107, 255, 0.16), transparent 62%);
  border-bottom: 1px solid var(--steel);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

.page-faq .faq-hero__lead h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--white);
  transform: skewX(-3deg);
  text-shadow: 1px 0 0 var(--neon);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(128px, 1fr));
}

.page-faq .faq-hero__stats li {
  padding: 16px 16px 14px;
  background: var(--faq-chip);
  border-left: 3px solid var(--neon);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-faq .faq-hero__stats span {
  display: block;
  font-size: clamp(26px, 6vw, 38px);
  line-height: 1;
  color: var(--neon);
  letter-spacing: -0.03em;
}

.page-faq .faq-hero__stats em {
  display: block;
  margin-top: 8px;
  font-style: normal;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 26px;
  padding-top: 34px;
}

.page-faq .step-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .step-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .step-rail__list li {
  flex: none;
}

.page-faq .step-rail__list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--steel);
  border-radius: 999px;
  color: var(--mist);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .step-rail__list a .mono {
  color: var(--neon);
  font-size: 13px;
}

.page-faq .step-rail__list a:hover,
.page-faq .step-rail__list a:focus-visible {
  color: var(--white);
  border-color: var(--neon);
  background: rgba(53, 255, 139, 0.08);
  outline: none;
}

.page-faq .step-rail__list a:focus-visible {
  box-shadow: 0 0 0 2px var(--neon);
}

/* ---------- 步骤区块 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: 48px;
  min-width: 0;
}

.page-faq .step {
  min-width: 0;
  scroll-margin-top: 24px;
}

.page-faq .step:target .step__head {
  border-bottom-color: var(--neon);
}

.page-faq .step:target .step__num {
  opacity: 0.9;
}

.page-faq .step--ranked {
  position: relative;
  overflow: hidden;
  padding: 22px 18px 24px;
  background: rgba(6, 22, 51, 0.55);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-faq .step__texture {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.14;
  pointer-events: none;
}

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

.page-faq .step--ranked > *:not(.step__texture) {
  position: relative;
  z-index: 1;
}

.page-faq .step__head {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 14px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--steel);
  transition: border-color 0.25s ease;
}

.page-faq .step__num {
  display: block;
  font-size: clamp(44px, 12vw, 84px);
  line-height: 0.86;
  letter-spacing: -0.05em;
  color: var(--neon);
  opacity: 0.4;
  transition: opacity 0.3s ease;
}

.page-faq .step__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 4.4vw, 30px);
  line-height: 1.25;
  color: var(--white);
}

.page-faq .step__intro {
  margin: 0 0 20px;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .step__foot {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
  padding-left: 14px;
  border-left: 2px solid var(--violet);
}

.page-faq .step__grid {
  display: grid;
  gap: 20px;
}

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

/* ---------- 快速上手列表 ---------- */
.page-faq .quick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .quick-list li {
  padding: 15px 16px;
  background: var(--faq-chip);
  border-left: 2px solid var(--neon);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-faq .quick-list h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .quick-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 两步流程图 ---------- */
.page-faq .flowmap {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .flowmap__node {
  padding: 20px 20px 22px;
  background: var(--panel);
  border: 1px solid var(--steel);
  border-top: 2px solid var(--neon);
  clip-path: polygon(0 0, calc(100% - var(--faq-notch)) 0, 100% var(--faq-notch), 100% 100%, 0 100%);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.page-faq .flowmap__node:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(6, 22, 51, 0.55);
}

.page-faq .flowmap__idx {
  display: inline-block;
  padding: 3px 12px 3px 9px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink);
  background: var(--neon);
  clip-path: polygon(0 0, 100% 0, calc(100% - 9px) 100%, 0 100%);
}

.page-faq .flowmap__node h3 {
  margin: 12px 0 8px;
  font-size: 19px;
  font-weight: 800;
  color: var(--white);
}

.page-faq .flowmap__node p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .view-panel {
  padding: 20px 20px 22px;
}

.page-faq .view-panel h3 {
  margin: 0 0 14px;
  font-size: 17px;
  font-weight: 800;
  color: var(--white);
}

.page-faq .view-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .view-list li {
  padding-left: 14px;
  border-left: 2px solid var(--steel);
}

.page-faq .view-list h4 {
  margin: 0 0 5px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--neon);
}

.page-faq .view-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 名单三步 ---------- */
.page-faq .check-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .check-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  background: var(--faq-chip);
  border-top: 2px solid var(--steel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-faq .check-steps li > .mono {
  font-size: 26px;
  line-height: 1;
  color: var(--orange);
  opacity: 0.85;
}

.page-faq .check-steps h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .check-steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 三项指标 ---------- */
.page-faq .metric-grid {
  display: grid;
  gap: 14px;
}

.page-faq .metric {
  padding: 18px;
  background: var(--panel);
  border-left: 3px solid var(--violet);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.page-faq .metric:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 28px rgba(6, 22, 51, 0.5);
}

.page-faq .metric h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--white);
}

.page-faq .metric p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 筛选维度 ---------- */
.page-faq .filter-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .filter-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}

.page-faq .filter-list__key {
  padding: 3px 11px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink);
  background: var(--violet);
  clip-path: polygon(0 0, 100% 0, calc(100% - 9px) 100%, 0 100%);
}

.page-faq .filter-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .sort-panel {
  padding: 20px 20px 22px;
}

.page-faq .sort-panel h3 {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 800;
  color: var(--white);
}

.page-faq .sort-panel p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .sort-panel .btn {
  margin-top: 6px;
}

/* ---------- 卡点排查 ---------- */
.page-faq .trouble-list {
  border-top: 1px solid var(--steel);
}

.page-faq .trouble {
  border-bottom: 1px solid var(--steel);
}

.page-faq .trouble summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  list-style: none;
  transition: color 0.2s ease;
}

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

.page-faq .trouble summary:hover,
.page-faq .trouble summary:focus-visible {
  color: var(--neon);
  outline: none;
}

.page-faq .trouble summary:focus-visible {
  box-shadow: inset 0 0 0 2px var(--neon);
}

.page-faq .trouble__idx {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 30px;
  height: 30px;
  font-size: 13px;
  color: var(--ink);
  background: var(--gold);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}

.page-faq .trouble__body {
  padding: 0 0 18px 44px;
}

.page-faq .trouble__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 底部引导 ---------- */
.page-faq .faq-cta {
  margin-top: 54px;
  border-top: 1px solid var(--steel);
  background: linear-gradient(118deg, rgba(53, 255, 139, 0.12), rgba(155, 107, 255, 0.16));
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 20px;
  padding: 38px 0 42px;
}

.page-faq .faq-cta h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 4vw, 26px);
  color: var(--white);
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .step__head {
    flex-direction: row;
    align-items: flex-end;
    gap: 20px;
  }

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

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

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }
}

@media (min-width: 860px) {
  .page-faq .step__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 30px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 40px 0 52px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.9fr);
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-body {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 40px;
    padding-top: 46px;
  }

  .page-faq .step-rail {
    position: sticky;
    top: 34px;
    align-self: start;
  }

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

  .page-faq .step-rail__list a {
    border: none;
    border-left: 2px solid var(--steel);
    border-radius: 0;
    padding: 9px 0 9px 12px;
    white-space: normal;
    line-height: 1.4;
  }

  .page-faq .step-rail__list a:hover,
  .page-faq .step-rail__list a:focus-visible {
    background: rgba(53, 255, 139, 0.06);
  }

  .page-faq .step-rail__label {
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .flowmap__node,
  .page-faq .metric,
  .page-faq .step__num,
  .page-faq .step__head,
  .page-faq .step-rail__list a,
  .page-faq .trouble summary {
    transition: none;
  }

  .page-faq .flowmap__node:hover,
  .page-faq .metric:hover {
    transform: none;
  }
}