.page-faq {
  --faq-soft: rgba(182, 255, 59, .08);
  --faq-cyan-soft: rgba(47, 243, 208, .09);
  --faq-line: rgba(199, 210, 204, .14);
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(56px, 8vw, 104px);
  overflow-x: clip;
}

.page-faq .wrap {
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 48px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 28px) 0 clamp(36px, 5vw, 64px);
  background:
    radial-gradient(120% 90% at 86% 0%, rgba(182, 255, 59, .16), transparent 60%),
    radial-gradient(90% 70% at 4% 30%, rgba(47, 243, 208, .10), transparent 68%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(199, 210, 204, .14) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: .35;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .8), transparent 78%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .8), transparent 78%);
}

.page-faq .faq-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .crumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .crumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: .82rem;
  color: var(--silver);
}

.page-faq .crumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(199, 210, 204, .5);
}

.page-faq .crumb-link {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

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

.page-faq .faq-hero-grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-hero-copy .display-xl {
  margin: 10px 0 18px;
  max-width: 20ch;
  font-weight: 900;
  letter-spacing: -.025em;
  line-height: 1.06;
  color: var(--paper);
}

.page-faq .faq-hero-copy .lead {
  max-width: 56ch;
  margin: 0 0 28px;
  color: var(--silver);
  font-size: clamp(.95rem, 1.3vw, 1.06rem);
  line-height: 1.85;
}

.page-faq .faq-search-label {
  display: block;
  margin-bottom: 10px;
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-faq .faq-search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 520px;
  padding: 12px 20px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(199, 210, 204, .34);
  background: rgba(14, 43, 34, .72);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease);
}

.page-faq .faq-search-box:focus-within {
  border-color: var(--lime);
  background: rgba(14, 43, 34, .95);
  box-shadow: 0 0 0 4px rgba(182, 255, 59, .14);
}

.page-faq .faq-search-icon {
  flex: none;
  color: var(--cyan);
}

.page-faq .faq-search-input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--paper);
  font: inherit;
  font-size: .94rem;
  line-height: 1.5;
}

.page-faq .faq-search-input:focus {
  outline: none;
}

.page-faq .faq-search-input::placeholder {
  color: rgba(199, 210, 204, .6);
}

.page-faq .faq-search-input::-webkit-search-cancel-button {
  filter: invert(1) opacity(.5);
}

.page-faq .faq-search-hint {
  margin: 12px 0 0;
  font-size: .8rem;
  color: rgba(199, 210, 204, .72);
}

.page-faq .faq-hero-media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: linear-gradient(150deg, var(--ink-2), var(--ink-3));
  box-shadow: 0 40px 80px -50px rgba(0, 0, 0, .95);
}

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

.page-faq .faq-hero-cap {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 20px 16px;
  border-top: 1px solid var(--line);
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--silver);
}

.page-faq .faq-hero-cap .num {
  font-family: var(--mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--lime);
  line-height: 1;
}

/* ---------- 分类索引 + 手风琴 ---------- */
.page-faq .faq-body {
  padding: clamp(40px, 6vw, 78px) 0 clamp(20px, 4vw, 40px);
}

.page-faq .faq-rail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.page-faq .faq-rail {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(14, 43, 34, .6);
  padding: 22px 20px;
}

.page-faq .faq-rail-title {
  margin: 0 0 16px;
  font-size: .74rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--silver);
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border-radius: var(--r-pill);
  text-decoration: none;
  color: var(--paper);
  font-size: .92rem;
  border: 1px solid transparent;
  transition: background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  background: rgba(182, 255, 59, .1);
  border-color: rgba(182, 255, 59, .4);
  outline: none;
}

.page-faq .faq-index-num {
  font-family: var(--mono);
  font-size: .9rem;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-index-text {
  flex: 1 1 auto;
}

.page-faq .faq-index-cnt {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--silver);
  background: rgba(199, 210, 204, .12);
  border-radius: var(--r-pill);
  padding: 2px 9px;
}

.page-faq .faq-rail-note {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-rail-note p {
  margin: 0 0 8px;
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(199, 210, 204, .78);
}

.page-faq .faq-rail-link {
  font-size: .84rem;
  font-weight: 700;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 59, .35);
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  border-bottom-color: var(--lime);
}

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

.page-faq .faq-group {
  margin-bottom: clamp(34px, 5vw, 56px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group:last-child {
  margin-bottom: 0;
}

.page-faq .faq-group-head {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group-title {
  margin: 12px 0 8px;
  font-size: clamp(1.24rem, 2.6vw, 1.66rem);
  font-weight: 800;
  letter-spacing: -.015em;
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-group-desc {
  margin: 0;
  max-width: 62ch;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .faq-mobile-figure {
  margin: 0 0 18px;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-3);
}

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

.page-faq .faq-mobile-figure figcaption {
  padding: 12px 18px 14px;
  font-size: .82rem;
  line-height: 1.65;
  color: rgba(199, 210, 204, .78);
  border-top: 1px solid var(--line);
}

/* 手风琴 */
.page-faq .acc {
  border: 1px solid var(--line);
  border-left: 3px solid transparent;
  border-radius: var(--r-md);
  background: var(--ink-2);
  margin-bottom: 12px;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-faq .acc:hover {
  border-color: rgba(199, 210, 204, .28);
  border-left-color: rgba(182, 255, 59, .5);
}

.page-faq .acc[open] {
  border-left-color: var(--lime);
  background:
    linear-gradient(180deg, rgba(182, 255, 59, .09), transparent 62%),
    var(--ink-2);
}

.page-faq .acc-sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 14px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .acc-sum::marker {
  content: "";
}

.page-faq .acc-sum:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--r-md);
}

.page-faq .acc-num {
  font-family: var(--mono);
  font-size: .86rem;
  font-weight: 700;
  color: var(--cyan);
  padding-top: 3px;
  letter-spacing: .02em;
}

.page-faq .acc-q {
  margin: 0;
  font-size: clamp(.95rem, 1.3vw, 1.02rem);
  font-weight: 700;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .acc-sign {
  position: relative;
  width: 22px;
  height: 22px;
  flex: none;
  margin-top: 2px;
  border-radius: 50%;
  border: 1px solid rgba(199, 210, 204, .4);
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-faq .acc-sign::before,
.page-faq .acc-sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--silver);
  transform: translate(-50%, -50%);
  transition: transform .3s var(--ease), background .3s var(--ease);
}

.page-faq .acc-sign::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .acc[open] .acc-sign {
  border-color: var(--lime);
  background: rgba(182, 255, 59, .14);
}

.page-faq .acc[open] .acc-sign::before,
.page-faq .acc[open] .acc-sign::after {
  background: var(--lime);
}

.page-faq .acc[open] .acc-sign::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-faq .acc-body {
  padding: 0 18px 20px;
}

.page-faq .acc-body p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.9;
  color: rgba(242, 247, 243, .84);
  max-width: 64ch;
}

/* ---------- 指标与版本说明 ---------- */
.page-faq .faq-metric-band {
  padding: clamp(40px, 6vw, 78px) 0;
  background:
    linear-gradient(180deg, rgba(14, 43, 34, .9), rgba(7, 28, 22, .9)),
    var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  position: relative;
}

.page-faq .faq-metric-band::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--lime), var(--cyan) 45%, var(--flame));
  opacity: .85;
}

.page-faq .faq-band-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: clamp(24px, 4vw, 40px);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-band-head .display-l {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 2.1rem);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.18;
  max-width: 22ch;
  color: var(--paper);
}

.page-faq .faq-band-link {
  font-size: .86rem;
  font-weight: 700;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 59, .35);
  padding-bottom: 2px;
  white-space: nowrap;
}

.page-faq .faq-band-link:hover,
.page-faq .faq-band-link:focus-visible {
  border-bottom-color: var(--lime);
}

.page-faq .faq-metrics {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-faq .metric-card {
  position: relative;
  padding: 24px 22px 26px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: rgba(10, 36, 28, .82);
  overflow: hidden;
}

.page-faq .metric-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.page-faq .metric-card--lime::after {
  background: var(--lime);
}

.page-faq .metric-card--cyan::after {
  background: var(--cyan);
}

.page-faq .metric-card--flame::after {
  background: var(--flame);
}

.page-faq .metric-kicker {
  margin: 0 0 14px;
  font-size: .74rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--silver);
}

.page-faq .metric-value {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--paper);
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .metric-value span {
  font-family: var(--sans);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--silver);
}

.page-faq .metric-card--lime .metric-value {
  color: var(--lime);
}

.page-faq .metric-card--cyan .metric-value {
  color: var(--cyan);
}

.page-faq .metric-card--flame .metric-value {
  color: var(--flame);
}

.page-faq .metric-text {
  margin: 0;
  font-size: .88rem;
  line-height: 1.85;
  color: rgba(199, 210, 204, .86);
}

/* ---------- 三步排查 ---------- */
.page-faq .faq-steps-band {
  padding: clamp(40px, 6vw, 78px) 0;
}

.page-faq .faq-steps-grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-steps-intro .display-l {
  margin: 10px 0 16px;
  font-size: clamp(1.35rem, 3vw, 2.05rem);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.2;
  max-width: 16ch;
  color: var(--paper);
}

.page-faq .faq-steps-intro .lead {
  margin: 0;
  max-width: 46ch;
  font-size: .94rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-step-num {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  padding-top: 2px;
}

.page-faq .faq-step-body h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-step-body p {
  margin: 0;
  font-size: .89rem;
  line-height: 1.85;
  color: rgba(199, 210, 204, .84);
  max-width: 58ch;
}

/* ---------- 仍需协助 ---------- */
.page-faq .faq-help {
  padding-bottom: clamp(20px, 4vw, 40px);
}

.page-faq .faq-help-panel {
  position: relative;
  border-radius: var(--r-lg);
  border: 1px solid rgba(182, 255, 59, .3);
  background:
    radial-gradient(90% 120% at 90% 0%, rgba(182, 255, 59, .16), transparent 62%),
    radial-gradient(80% 100% at 0% 100%, rgba(47, 243, 208, .12), transparent 66%),
    var(--ink-2);
  padding: clamp(26px, 4.5vw, 52px);
  overflow: hidden;
}

.page-faq .faq-help-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(199, 210, 204, .07) 0 1px, transparent 1px 64px);
  opacity: .6;
}

.page-faq .faq-help-panel > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-help-panel .display-l {
  margin: 10px 0 16px;
  font-size: clamp(1.3rem, 3vw, 1.95rem);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.22;
  max-width: 24ch;
  color: var(--paper);
}

.page-faq .faq-help-text {
  margin: 0 0 26px;
  max-width: 60ch;
  font-size: .94rem;
  line-height: 1.88;
  color: rgba(242, 247, 243, .84);
}

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

.page-faq .faq-copy-feedback {
  margin: 14px 0 0;
  min-height: 1.2em;
  font-size: .82rem;
  color: var(--lime);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .acc-sum {
    padding: 20px 22px;
    gap: 16px;
  }

  .page-faq .acc-body {
    padding: 0 22px 24px 82px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, .72fr);
    align-items: end;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-steps-grid {
    grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-rail-grid {
    grid-template-columns: 262px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 68px);
  }

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