.page-faq {
  --faq-rail-w: 236px;
  --faq-gap: clamp(22px, 3.4vw, 46px);
  --faq-soft: rgba(253, 251, 247, 0.74);
  --faq-soft-2: rgba(253, 251, 247, 0.58);

  padding-bottom: clamp(44px, 7vw, 92px);
  background-image:
    radial-gradient(1150px 500px at 6% -12%, rgba(40, 224, 200, 0.11), transparent 62%),
    radial-gradient(900px 420px at 94% 2%, rgba(138, 123, 255, 0.08), transparent 58%);
}

.page-faq .breadcrumb {
  padding-top: clamp(16px, 2.6vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  max-width: 60rem;
  padding: clamp(24px, 3.6vw, 48px) 0 clamp(26px, 3.6vw, 44px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 18px;
  font-size: clamp(2rem, 5.2vw, 3.35rem);
  line-height: 1.14;
  letter-spacing: -0.012em;
  font-weight: 900;
  color: var(--cream);
}

.page-faq .faq-hero__lede {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(15.5px, 1.35vw, 17.5px);
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(16px, 3.4vw, 42px);
  margin: clamp(24px, 3.2vw, 36px) 0 0;
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--line-dark-soft);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 82px;
}

.page-faq .faq-stat dt {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  color: var(--slate);
}

.page-faq .faq-stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-faq .faq-stat__unit {
  margin-left: 4px;
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--slate);
}

/* ---------- 六栏目阶梯 ---------- */
.page-faq .faq-stair {
  padding: clamp(28px, 4vw, 52px) 0 clamp(30px, 4.4vw, 58px);
  border-top: 1px solid var(--line-dark-soft);
}

.page-faq .faq-stair__head {
  margin-bottom: 10px;
}

.page-faq .faq-stair__note {
  max-width: 56ch;
  margin: 0 0 clamp(20px, 3vw, 30px);
  color: var(--faq-soft-2);
  line-height: 1.75;
}

.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 3vw, 30px);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-dark);
  background: var(--ink-2);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--slate);
}

.page-faq .faq-stair__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
}

.page-faq .faq-step {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  padding: 15px 15px 17px;
  background: var(--paper);
  color: var(--ink-text);
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  box-shadow: inset 3px 0 0 var(--cyan), var(--shadow-card);
  text-decoration: none;
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease), background 0.28s var(--ease);
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-visible {
  transform: translateY(-4px);
  background: var(--paper-3);
  box-shadow: inset 3px 0 0 var(--amber), var(--shadow-card);
  outline: none;
}

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  color: var(--ink-2);
  opacity: 0.72;
}

.page-faq .faq-step__title {
  flex: 1 1 auto;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.005em;
}

.page-faq .faq-step__meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--slate);
}

.page-faq .faq-step__level {
  align-self: flex-start;
  padding: 3px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-2);
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
}

@media (min-width: 880px) {
  .page-faq .faq-stair__list {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    align-items: start;
    padding-bottom: 104px;
  }

  .page-faq .faq-stair__item:nth-child(2) { margin-top: 20px; }
  .page-faq .faq-stair__item:nth-child(3) { margin-top: 40px; }
  .page-faq .faq-stair__item:nth-child(4) { margin-top: 60px; }
  .page-faq .faq-stair__item:nth-child(5) { margin-top: 80px; }
  .page-faq .faq-stair__item:nth-child(6) { margin-top: 100px; }

  .page-faq .faq-step {
    min-height: 176px;
  }
}

/* ---------- 正文与侧栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding-top: clamp(18px, 2.6vw, 32px);
  border-top: 1px solid var(--line-dark-soft);
}

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

.page-faq .faq-chapter {
  scroll-margin-top: 96px;
  padding: clamp(24px, 3.4vw, 40px) 0;
  border-bottom: 1px solid var(--line-dark-soft);
}

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

.page-faq .faq-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
}

.page-faq .faq-chapter__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-chapter__title {
  margin: 0;
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.008em;
  color: var(--cream);
}

.page-faq .faq-chapter__lede {
  max-width: 58ch;
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-soft);
}

/* ---------- 检查清单 ---------- */
.page-faq .faq-check {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-check__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 14px 16px;
  background: rgba(140, 244, 231, 0.04);
  border: 1px solid var(--line-dark-soft);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius);
}

.page-faq .faq-check__num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  line-height: 1.9;
  color: var(--cyan);
}

.page-faq .faq-check__body {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--faq-soft);
}

.page-faq .faq-check__body strong {
  display: inline;
  font-weight: 700;
  color: var(--cream);
}

.page-faq .faq-inline-link {
  margin: clamp(16px, 2.2vw, 22px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-soft-2);
}

.page-faq .faq-inline-link a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 244, 231, 0.45);
  padding-bottom: 1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-inline-link a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 要点列表 ---------- */
.page-faq .faq-note-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-note-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-note-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cyan);
  opacity: 0.75;
}

.page-faq .faq-note-list strong {
  font-weight: 700;
  color: var(--cream);
}

/* ---------- 情形选择（details） ---------- */
.page-faq .faq-track {
  margin-bottom: 10px;
  border: 1px solid var(--line-dark-soft);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(19, 41, 63, 0.62), rgba(11, 29, 51, 0.42));
  overflow: hidden;
}

.page-faq .faq-track > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  transition: background 0.22s var(--ease);
}

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

.page-faq .faq-track > summary:hover {
  background: rgba(40, 224, 200, 0.05);
}

.page-faq .faq-track[open] > summary {
  border-bottom: 1px solid var(--line-dark-soft);
}

.page-faq .faq-track__id {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  color: var(--cyan);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  padding: 3px 6px;
}

.page-faq .faq-track__text {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--cream);
}

.page-faq .faq-track__go {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--amber);
}

.page-faq .faq-track__body {
  padding: 14px 16px 18px;
  color: var(--faq-soft);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-track__body p {
  margin: 0 0 10px;
}

.page-faq .faq-track__body ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  color: var(--faq-soft-2);
}

@media (max-width: 560px) {
  .page-faq .faq-track > summary {
    grid-template-columns: auto minmax(0, 1fr);
    row-gap: 6px;
  }

  .page-faq .faq-track__go {
    grid-column: 2;
  }
}

/* ---------- 常见卡点（details） ---------- */
.page-faq .faq-detail {
  margin-bottom: 10px;
  border: 1px solid var(--line-dark-soft);
  border-radius: var(--radius);
  background: rgba(11, 29, 51, 0.5);
  transition: border-color 0.22s var(--ease);
}

.page-faq .faq-detail[open] {
  border-color: rgba(40, 224, 200, 0.34);
}

.page-faq .faq-detail > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--cream);
}

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

.page-faq .faq-detail > summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-detail[open] > summary::after {
  content: "−";
  color: var(--amber);
}

.page-faq .faq-detail > summary:hover {
  color: var(--cyan-soft);
}

.page-faq .faq-detail__body {
  padding: 0 16px 16px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--faq-soft);
}

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

/* ---------- 求助区 ---------- */
.page-faq .faq-need {
  list-style: none;
  margin: 0 0 clamp(20px, 2.6vw, 28px);
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-need li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--faq-soft);
}

.page-faq .faq-need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.76em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

.page-faq .faq-help {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid rgba(40, 224, 200, 0.28);
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, rgba(40, 224, 200, 0.09), rgba(19, 41, 63, 0.72) 58%);
}

.page-faq .faq-help__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-help__line {
  margin: 0 0 8px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--cream);
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--faq-soft-2);
}

/* ---------- 侧栏章节索引 ---------- */
.page-faq .faq-rail {
  display: none;
}

@media (min-width: 1080px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail-w);
    align-items: start;
  }

  .page-faq .faq-rail {
    display: block;
    position: sticky;
    top: 92px;
    padding-left: 20px;
    border-left: 1px solid var(--line-dark);
  }
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  color: var(--slate);
}

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

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

.page-faq .faq-rail__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 12px;
  padding: 10px 0 10px 6px;
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  color: var(--faq-soft-2);
  border-left: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--cyan-soft);
  border-left-color: var(--cyan);
  padding-left: 12px;
  outline: none;
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  opacity: 0.72;
}

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

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-track > summary,
  .page-faq .faq-rail__link,
  .page-faq .faq-inline-link a {
    transition: none;
  }

  .page-faq .faq-step:hover,
  .page-faq .faq-step:focus-visible {
    transform: none;
  }
}
<<<END>>>