.page-faq {
  --faq-rail: 232px;
  --faq-radius: 2px;
  background: var(--ink);
  color: var(--text);
  padding-bottom: 56px;
}

.page-faq .breadcrumbs {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 24px;
  padding: 18px 0 34px;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: 96px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--flame));
}

.page-faq .faq-hero h1 {
  margin: 8px 0 14px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(28px, 6.4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  transform: skewX(-2deg);
  transform-origin: left center;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--flame);
}

.page-faq .faq-fact__num {
  font-size: 26px;
  font-weight: 600;
  color: var(--flame);
  line-height: 1;
}

.page-faq .faq-fact__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 布局 ---------- */
.page-faq .tutorial-layout {
  display: grid;
  gap: 26px;
  margin-top: 28px;
}

.page-faq .tutorial-rail {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 16px;
}

.page-faq .tutorial-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--live);
}

.page-faq .rail-nav {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 2px;
  counter-reset: rail;
}

.page-faq .rail-nav__link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  border-left: 2px solid transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .rail-nav__link .mono {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.page-faq .rail-nav__link:hover,
.page-faq .rail-nav__link:focus-visible {
  background: var(--data);
  border-left-color: var(--flame);
  outline: none;
}

.page-faq .rail-nav__link:hover .mono,
.page-faq .rail-nav__link:focus-visible .mono {
  color: var(--flame-soft);
}

.page-faq .rail-nav__jump {
  display: inline-flex;
  width: 100%;
  justify-content: center;
}

/* ---------- 章节 ---------- */
.page-faq .tut-section {
  padding: 26px 0 30px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 84px;
}

.page-faq .tut-section:first-of-type {
  border-top: none;
  padding-top: 4px;
}

.page-faq .tut-section__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 12px;
}

.page-faq .tut-section__head .section-num {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 30px;
  line-height: 1;
  color: var(--flame);
  opacity: 0.92;
}

.page-faq .tut-section h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 4.2vw, 30px);
  line-height: 1.16;
  letter-spacing: -0.005em;
}

.page-faq .tut-section__intro {
  margin: 0 0 18px;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 分类卡 ---------- */
.page-faq .cat-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-faq .cat-card {
  display: block;
  padding: 16px 16px 18px;
  background: var(--data);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-faq .cat-card:hover,
.page-faq .cat-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--flame);
  background: var(--panel);
  outline: none;
}

.page-faq .cat-card__count {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--live);
  border-bottom: 1px solid var(--line);
  padding-bottom: 4px;
}

.page-faq .cat-card h3 {
  margin: 10px 0 6px;
  font-size: 17px;
  font-weight: 700;
  font-family: var(--font-head);
  letter-spacing: 0.01em;
}

.page-faq .cat-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 步骤 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .step {
  position: relative;
  padding: 16px 16px 16px 54px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--flame);
}

.page-faq .step__num {
  position: absolute;
  left: 14px;
  top: 16px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--data);
  border: 1px solid var(--line);
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--flame-soft);
}

.page-faq .step__title {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .step__desc {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 要点列表 ---------- */
.page-faq .point-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .point-list li {
  background: var(--panel);
  padding: 15px 16px;
}

.page-faq .point-list h3 {
  margin: 0 0 6px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
  padding-left: 12px;
  position: relative;
}

.page-faq .point-list h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  background: var(--flame);
  transform: rotate(45deg);
}

.page-faq .point-list p {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 8px;
  position: relative;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-faq .faq-figure::before {
  content: "";
  position: absolute;
  inset: 8px;
  background: linear-gradient(140deg, rgba(255, 90, 31, 0.16), transparent 55%, rgba(58, 19, 12, 0.5));
  pointer-events: none;
}

.page-faq .faq-figure figcaption {
  padding: 10px 4px 2px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 8px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-item[open] {
  border-color: var(--flame);
}

.page-faq .faq-item summary {
  position: relative;
  padding: 15px 46px 15px 16px;
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  list-style: none;
  min-height: 44px;
}

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

.page-faq .faq-item summary:hover {
  color: var(--flame-soft);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--flame);
  outline-offset: -2px;
}

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-data);
  font-size: 17px;
  color: var(--flame);
  line-height: 1;
}

.page-faq .faq-item[open] summary::after {
  content: "−";
}

.page-faq .faq-item__body {
  padding: 0 16px 16px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-item__body p {
  margin: 12px 0 0;
  font-size: 13.8px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 联系准备 ---------- */
.page-faq .tut-section--contact {
  background: linear-gradient(180deg, rgba(27, 38, 51, 0.55), transparent 70%);
  padding-left: 16px;
  padding-right: 16px;
  border: 1px solid var(--line);
  margin-top: 8px;
}

.page-faq .prep-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .prep-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13.8px;
  line-height: 1.65;
  color: var(--text);
}

.page-faq .prep-list__mark {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  font-size: 11px;
  color: var(--ink);
  background: var(--flame-soft);
  font-weight: 700;
}

.page-faq .contact-block {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-faq .contact-row {
  display: grid;
  gap: 2px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .contact-row dt {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .contact-row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--text);
  word-break: break-word;
}

.page-faq .contact-row dd.mono {
  font-family: var(--font-data);
  letter-spacing: 0.01em;
}

/* ---------- 提示与 CTA ---------- */
.page-faq .tut-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  padding-left: 12px;
  border-left: 2px solid var(--data);
}

.page-faq .tut-note a {
  color: var(--flame-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .tut-note a:hover {
  color: var(--flame);
}

.page-faq .faq-cta {
  margin-top: 28px;
  padding: 22px 18px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--flame);
  background: var(--panel);
  display: grid;
  gap: 16px;
}

.page-faq .faq-cta p {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-fact {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-faq .cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .contact-row {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }

  .page-faq .tut-section--contact {
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (min-width: 960px) {
  .page-faq .tutorial-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    margin-top: 34px;
  }

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

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
    gap: 40px;
    padding: 26px 0 40px;
  }

  .page-faq .faq-hero__main {
    padding-right: 8px;
  }

  .page-faq .faq-hero__lede {
    font-size: 15.5px;
  }

  .page-faq .faq-facts {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .page-faq .faq-fact {
    flex-direction: row;
    align-items: baseline;
  }

  .page-faq .cat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .step {
    padding: 18px 20px 18px 58px;
  }

  .page-faq .faq-figure {
    margin-top: 24px;
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 26px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .cat-card {
    transition: none;
  }
  .page-faq .cat-card:hover {
    transform: none;
  }
}
<<<END>>>