.page-faq {
  --faq-rule: rgba(159, 182, 201, 0.22);
  --faq-rule-strong: rgba(159, 182, 201, 0.38);
  --faq-card: linear-gradient(150deg, rgba(11, 42, 71, 0.92), rgba(5, 18, 31, 0.96));
  padding-bottom: clamp(64px, 9vw, 132px);
  overflow-x: clip;
}

.page-faq .faq-top {
  padding-top: clamp(22px, 5vw, 48px);
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 5vw, 54px) 0 clamp(30px, 5vw, 60px);
  isolation: isolate;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -6% -12% 0 -12%;
  z-index: 0;
  background:
    radial-gradient(58% 68% at 10% 6%, rgba(18, 135, 224, 0.30), transparent 62%),
    radial-gradient(52% 62% at 90% 0%, rgba(255, 106, 61, 0.22), transparent 60%);
  pointer-events: none;
}

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

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(32px, 7.2vw, 66px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-text);
  max-width: 20ch;
  transform: skewX(-3deg);
  transform-origin: left bottom;
  text-shadow: 0 0 40px rgba(18, 135, 224, 0.25);
}

.page-faq .faq-hero__lede {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 64ch;
  color: var(--c-muted);
  font-size: 17px;
  line-height: 1.85;
}

.page-faq .faq-quick {
  margin: clamp(26px, 4vw, 44px) 0 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--faq-rule);
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-faq .faq-quick > div {
  background: rgba(5, 18, 31, 0.72);
  padding: 16px 18px;
}

.page-faq .faq-quick dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-muted);
}

.page-faq .faq-quick dd {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-text);
}

/* ---- 主体骨架 ---- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 52px);
  align-items: start;
}

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

/* ---- 左侧分类索引 ---- */
.page-faq .faq-index {
  border-bottom: 1px solid var(--faq-rule);
  padding: 0 0 12px;
}

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--c-muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  flex-direction: row;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-pill);
  white-space: nowrap;
  color: var(--c-muted);
  font-size: 14.5px;
  line-height: 1.3;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-index__link .mono {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--c-coral);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(18, 135, 224, 0.16);
  border-color: rgba(111, 198, 250, 0.5);
  color: var(--c-text);
}

/* ---- 章节 ---- */
.page-faq .faq-sec {
  padding-top: clamp(46px, 8vw, 92px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-sec:first-of-type {
  padding-top: clamp(24px, 4vw, 40px);
}

.page-faq .section-title {
  font-size: clamp(25px, 4.4vw, 40px);
  line-height: 1.18;
}

/* ---- 结论条 ---- */
.page-faq .verdict {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin: 20px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--c-lime);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(47, 214, 155, 0.09);
  color: var(--c-text);
  font-size: 15.5px;
  line-height: 1.75;
}

.page-faq .verdict .mono {
  flex: 0 0 auto;
  margin-top: 3px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--c-lime);
}

/* ---- 图片 ---- */
.page-faq .faq-figure {
  margin: clamp(20px, 3.4vw, 32px) 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-md);
  border: 1px solid var(--faq-rule);
  object-fit: cover;
}

.page-faq .faq-figure .media-frame__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---- 步骤条 ---- */
.page-faq .steps {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--faq-rule);
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-faq .steps__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 20px;
  background: rgba(5, 18, 31, 0.72);
}

.page-faq .steps__num {
  flex: 0 0 auto;
  font-size: clamp(22px, 3.4vw, 28px);
  line-height: 1;
  color: var(--c-coral);
  letter-spacing: -0.02em;
}

.page-faq .steps__title {
  margin: 0 0 6px;
  color: var(--c-text);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
}

.page-faq .steps__desc {
  margin: 0;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.75;
}

/* ---- 对照表 ---- */
.page-faq .compare {
  margin: clamp(20px, 3.4vw, 30px) 0 0;
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-faq .compare__head {
  display: none;
}

.page-faq .compare__row {
  display: grid;
  grid-template-columns: 1fr;
  padding: 16px 18px;
  border-bottom: 1px solid var(--faq-rule);
  background: rgba(11, 42, 71, 0.28);
}

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

.page-faq .compare__cell {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .compare__cell:first-child {
  color: var(--c-text);
  font-weight: 700;
}

.page-faq .compare__cell:last-child {
  margin-top: 8px;
  color: var(--c-muted);
}

/* ---- 问答条目 ---- */
.page-faq .qa {
  margin-top: 14px;
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-md);
  background: var(--faq-card);
  overflow: hidden;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.page-faq .qa:hover {
  border-color: rgba(111, 198, 250, 0.44);
  transform: translateY(-2px);
}

.page-faq .qa[open] {
  border-color: rgba(18, 135, 224, 0.52);
  box-shadow: var(--glow-ocean);
}

.page-faq .qa.is-hit {
  border-color: rgba(182, 255, 60, 0.62);
  box-shadow: var(--glow-lime);
}

.page-faq [data-filter-item].is-hidden {
  display: none;
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  color: var(--c-text);
  font-family: var(--font-head);
  font-size: clamp(16px, 2.3vw, 18px);
  font-weight: 700;
  line-height: 1.55;
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--c-coral);
  transition: transform 0.24s ease;
}

.page-faq .qa[open] .qa__q::after {
  transform: rotate(45deg);
}

.page-faq .qa__num {
  flex: 0 0 auto;
  margin-top: 3px;
  padding: 3px 8px;
  border: 1px solid rgba(255, 106, 61, 0.44);
  border-radius: var(--r-pill);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  line-height: 1;
  color: var(--c-coral);
}

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

.page-faq .qa__a {
  padding: 15px 20px 22px;
  border-top: 1px solid var(--faq-rule);
  color: var(--c-muted);
  font-size: 16px;
  line-height: 1.82;
}

.page-faq .qa__a p {
  margin: 0 0 12px;
}

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

.page-faq .qa__a strong {
  color: var(--c-text);
  font-weight: 700;
}

.page-faq .qa__a ul,
.page-faq .qa__a ol {
  margin: 0 0 12px;
  padding-left: 20px;
}

.page-faq .qa__a li {
  margin-bottom: 8px;
}

.page-faq .qa__a li::marker {
  color: var(--c-ocean-soft);
}

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

.page-faq .link-inline {
  color: var(--c-ocean-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

/* ---- 缓存示意 ---- */
.page-faq .cache-figure {
  margin: clamp(20px, 3.4vw, 30px) 0 0;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-md);
  background: linear-gradient(150deg, rgba(18, 135, 224, 0.12), rgba(5, 18, 31, 0.72));
}

.page-faq .cache-stack {
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 78px;
}

.page-faq .cache-stack__seg {
  flex: 1 1 0;
  min-width: 0;
  height: 40%;
  border-radius: 6px 6px 3px 3px;
  border: 1px solid var(--faq-rule-strong);
  background: rgba(111, 198, 250, 0.08);
}

.page-faq .cache-stack__seg.is-filled {
  height: 100%;
  border-color: transparent;
  background: linear-gradient(180deg, #6FC6FA, #1287E0);
  box-shadow: var(--glow-ocean);
}

.page-faq .cache-stack__seg.is-current {
  height: 100%;
  border-color: transparent;
  background: linear-gradient(180deg, #FFA46B, #FF6A3D);
  box-shadow: var(--glow-coral);
}

.page-faq .cache-stack__seg.is-empty {
  height: 100%;
  border-style: dashed;
  background: repeating-linear-gradient(45deg, rgba(159, 182, 201, 0.14) 0 6px, transparent 6px 12px);
}

.page-faq .cache-legend {
  margin: 16px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-muted);
}

.page-faq .cache-legend span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.page-faq .cache-legend .dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex: 0 0 auto;
}

.page-faq .cache-legend .dot--filled {
  background: linear-gradient(180deg, #6FC6FA, #1287E0);
}

.page-faq .cache-legend .dot--current {
  background: linear-gradient(180deg, #FFA46B, #FF6A3D);
}

.page-faq .cache-legend .dot--empty {
  border: 1px dashed var(--faq-rule-strong);
  background: transparent;
}

/* ---- 帮助纸块 ---- */
.page-faq .help-paper {
  position: relative;
  overflow: hidden;
  margin-top: clamp(30px, 5vw, 56px);
  padding: clamp(24px, 4.4vw, 48px);
  border-radius: var(--r-lg);
  background: var(--grad-paper);
  color: var(--c-ink);
  box-shadow: var(--shadow-float);
}

.page-faq .help-paper::after {
  content: "06";
  position: absolute;
  right: 20px;
  bottom: -22px;
  font-family: var(--font-mono);
  font-size: clamp(84px, 18vw, 168px);
  line-height: 1;
  color: rgba(12, 27, 40, 0.08);
  pointer-events: none;
}

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

.page-faq .help-paper .index-label {
  color: rgba(12, 27, 40, 0.55);
}

.page-faq .help-paper h2 {
  margin: 12px 0 14px;
  font-family: var(--font-head);
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.2;
  color: var(--c-ink);
  letter-spacing: -0.01em;
}

.page-faq .help-paper > p {
  max-width: 60ch;
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(12, 27, 40, 0.78);
}

.page-faq .help-lines {
  margin: 22px 0 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(12, 27, 40, 0.16);
  border: 1px solid rgba(12, 27, 40, 0.16);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.page-faq .help-lines > div {
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.42);
}

.page-faq .help-lines dt {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: rgba(12, 27, 40, 0.6);
}

.page-faq .help-lines dd {
  margin: 7px 0 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-ink);
  word-break: break-word;
}

.page-faq .help-paper .link-inline {
  color: #0B2A47;
  text-decoration-color: rgba(12, 27, 40, 0.45);
}

.page-faq .help-paper .link-inline:hover,
.page-faq .help-paper .link-inline:focus-visible {
  color: #B23A16;
  text-decoration-color: currentColor;
}

.page-faq .help-cta {
  margin-top: 22px;
}

/* ---- 响应式 ---- */
@media (min-width: 620px) {
  .page-faq .faq-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 720px) {
  .page-faq .compare__head {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    background: rgba(11, 42, 71, 0.62);
  }

  .page-faq .compare__head span {
    padding: 12px 18px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--c-muted);
  }

  .page-faq .compare__row {
    grid-template-columns: 1fr 1.5fr;
    padding: 0;
  }

  .page-faq .compare__cell {
    padding: 16px 18px;
  }

  .page-faq .compare__cell:last-child {
    margin-top: 0;
    border-left: 1px solid var(--faq-rule);
  }

  .page-faq .qa__q {
    padding: 20px 24px;
  }

  .page-faq .qa__a {
    padding: 16px 24px 24px;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-shell {
    grid-template-columns: 236px minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    border-bottom: 0;
    border-left: 2px solid var(--faq-rule);
    padding: 4px 0 4px 18px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 3px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__link {
    border: 0;
    border-radius: var(--r-sm);
    white-space: normal;
    padding: 9px 10px;
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__q::after,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .qa:hover {
    transform: none;
  }
}
<<<END>>>