.page-faq {
  --faq-cut: 16px;
  --faq-card-bg: rgba(11, 42, 33, 0.62);
  --faq-card-bg-strong: rgba(11, 42, 33, 0.92);
  background: var(--ink);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px) clamp(18px, 4vw, 44px) clamp(30px, 5vw, 58px);
  background:
    radial-gradient(130% 100% at 8% 0%, rgba(198, 255, 61, 0.12), transparent 58%),
    radial-gradient(90% 80% at 96% 18%, rgba(255, 179, 71, 0.1), transparent 62%),
    linear-gradient(180deg, var(--ink-2), var(--ink) 78%);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(115deg, rgba(31, 74, 58, 0.55) 0 1px, transparent 1px 46px);
  opacity: 0.32;
  pointer-events: none;
}

.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
  max-width: var(--shell-max);
  margin-left: auto;
  margin-right: auto;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 78px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  max-width: 16em;
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--lime);
  position: relative;
}

.page-faq .faq-hero__title em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.06em;
  height: 0.09em;
  background: var(--lime);
  opacity: 0.28;
}

.page-faq .faq-hero__lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 46em;
  color: var(--muted);
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.8;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin-top: clamp(20px, 3vw, 34px);
  padding-top: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-faq .faq-stat:nth-child(2) .faq-stat__num {
  color: var(--amber);
}

.page-faq .faq-stat__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 主体：左索引 + 右内容 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: clamp(30px, 5vw, 60px) clamp(18px, 4vw, 44px) clamp(48px, 8vw, 92px);
}

.page-faq .faq-index {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-faq .faq-index__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime-deep);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 10px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--line);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--text);
  background: rgba(198, 255, 61, 0.07);
  border-left-color: var(--lime);
}

.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num {
  color: var(--lime);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 1px;
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
  opacity: 0.85;
}

/* ---------- 章节 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(34px, 5vw, 62px);
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: 96px;
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: clamp(12px, 2vw, 22px);
  align-items: start;
}

.page-faq .faq-section__no {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(34px, 6.4vw, 62px);
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--lime);
  opacity: 0.72;
}

.page-faq .faq-section .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-faq .faq-section__intro {
  margin: 10px 0 0;
  max-width: 44em;
  font-size: clamp(14.5px, 1.55vw, 16.5px);
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-subhead {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--lime-deep);
}

/* ---------- 四步排查 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(10px, 1.6vw, 16px);
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 20px);
  align-items: start;
  padding: clamp(15px, 2.2vw, 22px);
  background: linear-gradient(140deg, var(--faq-card-bg-strong), rgba(6, 26, 20, 0.4));
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .faq-step__no {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-faq .faq-step__body h3 {
  margin: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .faq-step__body p {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  display: block;
  margin: clamp(20px, 3vw, 32px) 0 0;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--ink-2);
  border: 1px solid var(--line);
}

.page-faq .faq-figure--tall {
  aspect-ratio: 5 / 4;
}

.page-faq .faq-figure img,
.page-faq .faq-figure .media-frame__image {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-figure .media-frame__caption {
  display: block;
  padding: 9px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
  background: var(--ink-2);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-cases {
  margin-top: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-case {
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.2s var(--ease);
}

.page-faq .faq-case[open] {
  background: rgba(11, 42, 33, 0.55);
}

.page-faq .faq-case__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding: 14px 10px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(14.5px, 1.6vw, 16.5px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

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

.page-faq .faq-case__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-case[open] .faq-case__summary::after {
  content: "\2013";
}

.page-faq .faq-case__summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-faq .faq-case__title {
  flex: 1 1 12em;
  min-width: 0;
}

.page-faq .faq-case__body {
  display: grid;
  gap: 9px;
  padding: 0 10px 18px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-case__body p {
  margin: 0;
}

.page-faq .faq-case__body strong {
  color: var(--text);
  font-weight: 600;
}

/* ---------- 版本核对清单 ---------- */
.page-faq .faq-checks {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-check {
  display: grid;
  grid-template-columns: minmax(64px, 96px) minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-check__where {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-faq .faq-check__what {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-check__what em {
  font-style: normal;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--lime);
}

/* ---------- 反馈材料 ---------- */
.page-faq .faq-materials {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.page-faq .faq-material {
  display: grid;
  gap: 6px;
  padding: 16px 16px 18px;
  background: var(--faq-card-bg);
  border-left: 3px solid var(--lime);
}

.page-faq .faq-material__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--lime-deep);
}

.page-faq .faq-material strong {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-faq .faq-material span:last-child {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-cats {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(12px, 2vw, 20px);
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.page-faq .faq-cat {
  padding: clamp(16px, 2.2vw, 22px);
  background: linear-gradient(160deg, var(--faq-card-bg-strong), rgba(6, 26, 20, 0.35));
  clip-path: polygon(var(--faq-cut) 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%, 0 var(--faq-cut));
}

.page-faq .faq-cat__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--lime);
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-cat__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-cat__list li {
  position: relative;
  padding-left: 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-cat__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--lime-deep);
  transform: rotate(45deg);
}

/* ---------- 行内链接与提示条 ---------- */
.page-faq .faq-inline-link {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.42);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

.page-faq .faq-inline-link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-faq .faq-callout {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
  background: rgba(31, 74, 58, 0.32);
  border-left: 3px solid var(--lime-deep);
}

.page-faq .faq-callout--amber {
  background: rgba(217, 130, 27, 0.12);
  border-left-color: var(--amber);
}

/* ---------- 标签微调 ---------- */
.page-faq .tag {
  flex: 0 0 auto;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  line-height: 1.5;
}

/* ---------- 平板起 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-step:nth-child(even) {
    margin-left: clamp(16px, 3vw, 44px);
  }
}

/* ---------- 桌面：左索引常驻 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 234px minmax(0, 1fr);
    align-items: start;
    column-gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 14px;
    gap: 1px;
  }
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-case,
  .page-faq .faq-index__link,
  .page-faq .faq-inline-link {
    transition: none;
  }
}
<<<END>>>