.page-faq {
  background: var(--night);
  color: var(--cream);
  --faq-step-line: rgba(228, 180, 87, 0.22);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(1.6rem, 4vw, 3rem);
  padding-bottom: clamp(2rem, 5vw, 3.4rem);
}

.page-faq .faq-frame {
  position: relative;
  padding: clamp(1.6rem, 4.4vw, 3.4rem) clamp(1.2rem, 3.6vw, 2.8rem);
  background:
    radial-gradient(ellipse at 82% 4%, var(--grape-veil), transparent 62%),
    linear-gradient(178deg, var(--vine) 0%, var(--night) 96%);
}

.page-faq .faq-ticks {
  position: absolute;
  top: 0;
  left: 14%;
  width: 56%;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 15px);
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-vnote {
  position: absolute;
  top: 1.4rem;
  right: 0.7rem;
  margin: 0;
  writing-mode: vertical-rl;
  font-family: var(--f-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.22em;
  color: var(--muted);
  opacity: 0.8;
  pointer-events: none;
}

.page-faq .faq-kicker {
  margin: 0 0 0.9rem;
  font-family: var(--f-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .faq-title {
  margin: 0 0 1.1rem;
  max-width: 17em;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: var(--fs-title);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-faq .faq-lede {
  max-width: 34em;
  margin: 0 0 1.6rem;
  color: var(--muted);
  font-size: var(--fs-body);
  line-height: 1.95;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.4rem 0 1.6rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-filter .filter-btn {
  font-family: var(--f-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.12em;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 0.42rem 0.9rem;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-filter .filter-btn:hover {
  color: var(--gold-pale);
  border-color: var(--line-strong);
}

.page-faq .faq-filter .filter-btn[aria-pressed="true"] {
  color: var(--night);
  background: var(--gold);
  border-color: var(--gold);
}

.page-faq .faq-filter .filter-btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- 三类现象卡片 ---------- */
.page-faq .faq-symptom-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  border-top: 1px solid var(--line);
  padding-top: var(--gap);
}

.page-faq .faq-symptom {
  display: flex;
  flex-direction: column;
  padding: 1.3rem 1.2rem 1.4rem;
  background: linear-gradient(180deg, var(--vine) 0%, rgba(16, 48, 42, 0.55) 100%);
  border: 1px solid var(--line);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-symptom:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.page-faq .faq-dot {
  display: block;
  width: 10px;
  height: 10px;
  margin-bottom: 1rem;
}

.page-faq .faq-dot--grape {
  background: var(--grape-light);
}

.page-faq .faq-dot--vine {
  background: var(--shade);
  box-shadow: 0 0 0 1px rgba(228, 180, 87, 0.55);
}

.page-faq .faq-dot--alert {
  background: var(--alert);
}

.page-faq .faq-symptom .card-meta {
  margin: 0 0 0.5rem;
  font-family: var(--f-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-symptom .card-title {
  margin: 0 0 0.7rem;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--fs-sub);
  color: var(--cream);
}

.page-faq .faq-symptom-text {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.85;
}

.page-faq .faq-symptom .text-link {
  margin-top: auto;
  align-self: flex-start;
}

/* ---------- 四段排查 ---------- */
.page-faq .faq-open-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-bottom: clamp(1.6rem, 3vw, 2.4rem);
}

.page-faq .faq-open-intro .section-sub {
  margin-bottom: 0.9rem;
}

.page-faq .faq-open-hint {
  margin: 0;
  padding: 0.75rem 0.9rem;
  border-left: 2px solid var(--gold);
  background: rgba(107, 63, 160, 0.14);
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.8;
}

.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--vine);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  filter: brightness(0.88) saturate(0.9);
}

.page-faq .faq-figure--square img {
  aspect-ratio: 1 / 1;
}

.page-faq .faq-figure .media-caption {
  padding: 0.6rem 0.9rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--f-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.1em;
  color: var(--muted);
}

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

.page-faq .faq-step {
  position: relative;
  padding-left: 2.4rem;
  padding-bottom: 2.2rem;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 1.5rem;
  bottom: 0;
  width: 1px;
  background: var(--faq-step-line);
}

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

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-node {
  position: absolute;
  left: 0;
  top: 0.3rem;
  width: 19px;
  height: 19px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: var(--night);
  transition: border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-faq .faq-node::after {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--grape-light);
  transition: background 0.24s var(--ease);
}

.page-faq .faq-step:has(.faq-checks input:checked) .faq-node {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(228, 180, 87, 0.14);
}

.page-faq .faq-step:has(.faq-checks input:checked) .faq-node::after {
  background: var(--gold);
}

.page-faq .faq-step-title {
  margin: 0 0 0.5rem;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--fs-sub);
  line-height: 1.4;
  color: var(--cream);
}

.page-faq .faq-step-title em {
  display: block;
  margin-bottom: 0.3rem;
  font-style: normal;
  font-family: var(--f-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .faq-step-body > p {
  margin: 0;
  max-width: 34em;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.85;
}

.page-faq .faq-checks {
  list-style: none;
  margin: 0.85rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
  max-width: 34em;
}

.page-faq .faq-checks label {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  cursor: pointer;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.7;
  transition: color 0.18s var(--ease);
}

.page-faq .faq-checks input {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 0.26rem 0 0;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: transparent;
  border-radius: 0;
  cursor: pointer;
  transition: border-color 0.18s var(--ease);
}

.page-faq .faq-checks input::after {
  content: "";
  width: 8px;
  height: 8px;
  background: transparent;
  transition: background 0.18s var(--ease);
}

.page-faq .faq-checks input:checked {
  border-color: var(--gold);
}

.page-faq .faq-checks input:checked::after {
  background: var(--gold);
}

.page-faq .faq-checks input:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-faq .faq-checks input:checked + span {
  color: var(--cream);
}

.page-faq .faq-step-note {
  margin-top: 0.9rem !important;
  padding-left: 0.8rem;
  border-left: 2px solid var(--grape);
  font-size: 0.9rem !important;
}

.page-faq .faq-step-note--alert {
  border-left-color: var(--alert);
}

/* ---------- 折叠组 ---------- */
.page-faq .faq-folds {
  margin-top: 1.4rem;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-fold h3 {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-fold .fold-head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1.05rem 0.2rem;
  background: transparent;
  border: 0;
  border-radius: 0;
  color: var(--cream);
  text-align: left;
  font-family: var(--f-body);
  font-size: 1.02rem;
  cursor: pointer;
  transition: color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-fold .fold-head:hover {
  background: rgba(107, 63, 160, 0.12);
  color: var(--gold-pale);
}

.page-faq .faq-fold .fold-head:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-faq .faq-fold .fold-num {
  flex: 0 0 auto;
  font-family: var(--f-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-fold .fold-title {
  flex: 1 1 auto;
}

.page-faq .faq-fold .fold-mark {
  flex: 0 0 auto;
  width: 0;
  height: 0;
  border-left: 7px solid var(--gold);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform 0.24s var(--ease);
}

.page-faq .faq-fold .fold-head[aria-expanded="true"] .fold-mark {
  transform: rotate(90deg);
}

.page-faq .faq-fold .fold-body {
  padding: 0 0.2rem 1.4rem calc(1.2rem + 2.2rem);
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.9;
}

.page-faq .faq-fold .fold-body p {
  margin: 0 0 0.8rem;
  max-width: 34em;
}

.page-faq .faq-fold .fold-body p:last-child {
  margin-bottom: 0;
}

/* ---------- 登录三步 ---------- */
.page-faq .faq-login-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-faq .faq-login-main .section-sub {
  margin-bottom: 1.2rem;
}

.page-faq .faq-login-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: lg;
  border-top: 1px solid var(--line);
}

.page-faq .faq-login-step {
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 0.2rem 0.9rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-login-step::before {
  counter-increment: lg;
  content: counter(lg, decimal-leading-zero);
  grid-row: 1 / span 3;
  font-family: var(--f-mono);
  font-size: 1.1rem;
  line-height: 1.5;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .faq-login-step h3 {
  margin: 0 0 0.45rem;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.08rem;
  color: var(--cream);
}

.page-faq .faq-login-step p {
  margin: 0 0 0.5rem;
  max-width: 32em;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.85;
}

.page-faq .faq-login-step p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-login-note {
  margin: 1.1rem 0 0;
  padding-left: 0.85rem;
  border-left: 2px solid var(--gold);
  color: var(--gold-pale);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* ---------- 反馈信息 ---------- */
.page-faq .faq-feedback-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-top: 1.4rem;
}

.page-faq .faq-info-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-info-list li {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.75;
}

.page-faq .faq-info-num {
  flex: 0 0 auto;
  font-family: var(--f-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.12em;
  color: var(--grape-light);
}

.page-faq .faq-contact-box {
  padding: 1.3rem 1.15rem;
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(107, 63, 160, 0.2), rgba(16, 48, 42, 0.85));
}

.page-faq .faq-contact-kicker {
  margin: 0 0 0.6rem;
  font-family: var(--f-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .faq-contact-mail {
  margin: 0 0 0.9rem;
  font-family: var(--f-mono);
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--cream);
  word-break: break-all;
}

.page-faq .faq-copy {
  margin-bottom: 1rem;
}

.page-faq .faq-contact-note {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.8;
}

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

.page-faq .faq-tick-band {
  margin-top: clamp(1.8rem, 3.4vw, 2.6rem);
  height: 12px;
  background-image: repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 18px);
  opacity: 0.5;
}

/* ---------- 右侧章节刻度 ---------- */
.page-faq .faq-scale {
  display: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-symptom-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-symptom:nth-child(2) {
    margin-top: 1.1rem;
  }

  .page-faq .faq-symptom:nth-child(3) {
    margin-top: 2.2rem;
  }

  .page-faq .faq-feedback-panel {
    grid-template-columns: 1.35fr 1fr;
    align-items: start;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-open-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }

  .page-faq .faq-login-grid {
    grid-template-columns: 1fr 0.72fr;
    align-items: start;
  }

  .page-faq .faq-step {
    padding-left: 3rem;
  }

  .page-faq .faq-step::before {
    left: 9px;
  }

  .page-faq .faq-vnote {
    right: -1.6rem;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-scale {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    position: fixed;
    right: 1.4rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 6;
  }

  .page-faq .faq-scale .scale-link {
    display: block;
    padding: 0.34rem 0.7rem;
    border-right: 1px solid var(--line-soft);
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    color: rgba(195, 185, 172, 0.72);
    text-align: right;
    text-decoration: none;
    transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
  }

  .page-faq .faq-scale .scale-link:hover,
  .page-faq .faq-scale .scale-link:focus-visible,
  .page-faq .faq-scale .scale-link[aria-current="true"] {
    color: var(--gold-pale);
    border-right-color: var(--gold);
  }
}

@media (max-width: 560px) {
  .page-faq .faq-vnote {
    display: none;
  }

  .page-faq .faq-fold .fold-body {
    padding-left: 0.4rem;
  }

  .page-faq .faq-login-step {
    grid-template-columns: 1.9rem 1fr;
    gap: 0.2rem 0.7rem;
  }

  .page-faq .faq-step {
    padding-left: 2.1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-symptom,
  .page-faq .faq-node,
  .page-faq .faq-node::after,
  .page-faq .faq-fold .fold-mark {
    transition: none;
  }

  .page-faq .faq-symptom:hover {
    transform: none;
  }
}

<nav class="scale-nav faq-scale" aria-label="页内章节导航">
  <a class="scale-link" href="#sec-symptom">01 现象分类</a>
  <a class="scale-link" href="#sec-open">02 四段排查</a>
  <a class="scale-link" href="#sec-load">03 加载失败</a>
  <a class="scale-link" href="#sec-login">04 登录异常</a>
  <a class="scale-link" href="#sec-feedback">05 反馈方式</a>
</nav>

.page-faq .faq-scale {
  margin: 0;
}
<<<END>>>