/* ===== 使用教程页 · 页面专属样式（作用域 .page-faq） ===== */

.page-faq {
  --faq-card: var(--ink-2);
  --faq-card-line: var(--line);
  display: block;
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-top: clamp(1rem, 3vw, 1.6rem);
  padding-bottom: clamp(1rem, 3vw, 1.6rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(2.25rem, 5vw, 3.75rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 96% at 92% 6%, rgba(201, 162, 77, .17), transparent 56%),
    radial-gradient(80% 72% at 2% 98%, rgba(95, 143, 124, .13), transparent 62%),
    var(--ink);
}

.page-faq .faq-hero__grid {
  align-items: end;
  row-gap: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-hero h1 {
  margin: .55rem 0 0;
  max-width: 19ch;
  font-family: var(--font-head);
  font-size: var(--step-6);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.012em;
  color: var(--white);
}

.page-faq .faq-hero .lede {
  color: var(--text-ink);
  margin-top: 0;
}

.page-faq .faq-hero__tags {
  margin-top: 1.1rem;
}

.page-faq .faq-hero__mark {
  position: absolute;
  top: 50%;
  right: clamp(.25rem, 1.5vw, 1.25rem);
  transform: translateY(-50%) rotate(90deg);
  transform-origin: center;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .3em;
  white-space: nowrap;
  color: rgba(201, 162, 77, .5);
  pointer-events: none;
  user-select: none;
}

/* ---------- 章节通用 ---------- */
.page-faq .tut-section {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .tut-section--last {
  padding-bottom: clamp(3rem, 7vw, 5rem);
  border-bottom: 0;
}

.page-faq .tut-section__head {
  max-width: 68ch;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.5rem);
}

.page-faq .tut-section__title {
  margin: .5rem 0 .75rem;
  font-family: var(--font-head);
  font-size: var(--step-4);
  font-weight: 800;
  line-height: 1.22;
  color: var(--white);
}

.page-faq .tut-section__desc {
  margin: 0;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-ink);
}

.page-faq .eyebrow--celadon {
  color: var(--celadon);
}

.page-faq .eyebrow--ink {
  color: var(--graphite);
}

/* ---------- 路线图 ---------- */
.page-faq .faq-route {
  margin: 0 0 clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-route .media-frame__tag {
  color: var(--gold-soft);
}

/* ---------- 四步走：左侧编号栏 + 右侧步骤卡 ---------- */
.page-faq .tut-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
  align-items: start;
}

.page-faq .step-rail {
  min-width: 0;
}

.page-faq .step-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  padding: .45rem .7rem;
  border-left: 2px solid var(--line);
  font-size: .875rem;
  line-height: 1.5;
  color: var(--steel);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .step-rail__link:hover,
.page-faq .step-rail__link:focus-visible {
  color: var(--gold-soft);
  border-left-color: var(--gold);
  background: rgba(201, 162, 77, .08);
}

.page-faq .step-rail__no {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .step-stack {
  min-width: 0;
}

.page-faq .step-card {
  background: var(--faq-card);
  border-left: 3px solid var(--gold);
  border-radius: 2px;
  scroll-margin-top: 110px;
  transition: box-shadow .25s var(--ease), transform .25s var(--ease);
}

.page-faq .step-card + .step-card {
  margin-top: clamp(.7rem, 1.8vw, 1.05rem);
}

.page-faq .step-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.page-faq .step-card[open] {
  border-left-color: var(--gold-soft);
}

.page-faq .step-card > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .5rem 1rem;
  padding: clamp(1rem, 2.4vw, 1.4rem) clamp(1rem, 2.4vw, 1.6rem);
  cursor: pointer;
  list-style: none;
  background: transparent;
}

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

.page-faq .step-card > summary::marker {
  content: "";
}

.page-faq .step-card__title {
  flex: 1 1 14ch;
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: .7rem;
  font-family: var(--font-head);
  font-size: var(--step-2);
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .step-card__no {
  font-family: var(--font-mono);
  font-size: 1.0625rem;
  letter-spacing: .05em;
  color: var(--gold);
}

.page-faq .step-card__cue {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  color: var(--steel);
  white-space: nowrap;
}

.page-faq .step-card[open] .step-card__cue {
  color: var(--gold-soft);
}

.page-faq .step-card__body {
  padding: 0 clamp(1rem, 2.4vw, 1.6rem) clamp(1.1rem, 2.6vw, 1.5rem);
}

.page-faq .step-card__lead {
  margin: 0;
  padding-top: .9rem;
  border-top: 1px solid var(--line);
  font-size: .9688rem;
  line-height: 1.85;
  color: var(--text-ink);
}

.page-faq .step-card__lead a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 现象 / 动作 对照 ---------- */
.page-faq .hitch {
  display: grid;
  gap: .5rem;
  margin-top: 1rem;
}

.page-faq .hitch--wide {
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .hitch__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: .3rem .9rem;
  padding: .65rem .85rem;
  border-left: 2px solid rgba(192, 57, 43, .55);
  background: rgba(14, 17, 20, .46);
  border-radius: 2px;
}

.page-faq .hitch__sym {
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--text-ink);
}

.page-faq .hitch__act {
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--gold-soft);
}

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

/* ---------- 苹果设备三段卡 ---------- */
.page-faq .apple-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(.9rem, 2vw, 1.25rem);
}

.page-faq .apple-step {
  padding: clamp(1rem, 2.4vw, 1.5rem);
  background: var(--faq-card);
  border-top: 2px solid var(--gold);
  border-radius: 2px;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}

.page-faq .apple-step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.page-faq .apple-step__no {
  display: inline-block;
  margin-bottom: .55rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-faq .apple-step h3 {
  margin: 0 0 .5rem;
  font-family: var(--font-head);
  font-size: var(--step-1);
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .apple-step p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--text-ink);
}

.page-faq .apple-step p a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 收藏与检索 ---------- */
.page-faq .search-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2.5vw, 1.5rem);
}

.page-faq .search-panel {
  padding: clamp(1.1rem, 2.6vw, 1.75rem);
  background: var(--faq-card);
  border: 1px solid var(--faq-card-line);
  border-radius: 3px;
}

.page-faq .search-panel--accent {
  border-color: var(--line-strong);
  background:
    linear-gradient(180deg, rgba(201, 162, 77, .09), rgba(27, 32, 38, .96));
}

.page-faq .search-panel__title {
  margin: 0 0 1rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-head);
  font-size: var(--step-2);
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}

.page-faq .layer-list {
  counter-reset: layer;
  display: grid;
  gap: .8rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .layer-list > li {
  position: relative;
  padding-left: 3.4rem;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--text-ink);
}

.page-faq .layer-list > li strong {
  color: var(--white);
  font-weight: 700;
}

.page-faq .layer-list > li::before {
  counter-increment: layer;
  content: "L" counter(layer);
  position: absolute;
  left: 0;
  top: .22rem;
  padding: .05rem .42rem;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: rgba(201, 162, 77, .1);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .layer-list--plain > li {
  padding-left: 1.1rem;
}

.page-faq .layer-list--plain > li::before {
  content: "";
  top: .7rem;
  left: 0;
  width: .42rem;
  height: .42rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--celadon);
}

/* ---------- 旧版切换 ---------- */
.page-faq .index-list {
  margin: 0;
}

.page-faq .index-list__note a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .legacy-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  padding: .9rem 1rem;
  border-left: 2px solid var(--celadon);
  background: rgba(95, 143, 124, .1);
  border-radius: 2px;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--text-ink);
}

/* ---------- 常见问题 ---------- */
.page-faq .faq-head__grid {
  align-items: end;
  row-gap: clamp(1rem, 2.5vw, 1.5rem);
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

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

.page-faq .faq-head__media .media-frame {
  margin: 0;
}

.page-faq .tabs {
  margin-top: clamp(.5rem, 1.5vw, 1rem);
}

.page-faq .tabs__list {
  flex-wrap: wrap;
  gap: .4rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: .6rem;
}

.page-faq .tabs__panel {
  padding-top: clamp(1.1rem, 2.6vw, 1.6rem);
}

.page-faq .tabs__panel .hitch {
  margin-top: 0;
}

/* ---------- 收尾联系条 ---------- */
.page-faq .contact-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2.25rem);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  background: var(--paper);
  color: var(--ink);
  border-radius: 3px;
  border-top: 3px solid var(--gold);
}

.page-faq .contact-strip__title {
  margin: .35rem 0 .85rem;
  font-family: var(--font-head);
  font-size: var(--step-3);
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink);
}

.page-faq .contact-strip__text {
  margin: 0 0 .8rem;
  max-width: 62ch;
  font-size: .9688rem;
  line-height: 1.85;
  color: var(--graphite);
}

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

.page-faq .contact-strip__text a {
  color: var(--cinnabar);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .contact-strip__list {
  align-self: start;
  display: grid;
  gap: .55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .contact-strip__list li {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .55rem .75rem;
  background: var(--white);
  border-left: 2px solid var(--gold);
  border-radius: 2px;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .contact-strip__list .mono {
  color: #8a6a24;
  font-size: .75rem;
}

.page-faq .contact-strip__foot {
  margin: clamp(1rem, 2.5vw, 1.5rem) 0 0;
  font-size: .875rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-faq .contact-strip__foot a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .hitch__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: start;
    padding: .7rem 1rem;
  }
}

@media (min-width: 720px) {
  .page-faq .apple-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-faq .search-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-faq .contact-strip {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }
}

@media (min-width: 880px) {
  .page-faq .tut-layout {
    grid-template-columns: 152px minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 3rem);
  }

  .page-faq .step-rail {
    position: sticky;
    top: 104px;
  }

  .page-faq .step-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: .15rem;
  }

  .page-faq .step-rail__link {
    display: flex;
    width: 100%;
    padding: .55rem .5rem .55rem .65rem;
  }

  .page-faq .faq-hero h1 {
    max-width: 15ch;
  }
}

@media (max-width: 559px) {
  .page-faq .faq-hero__mark {
    display: none;
  }

  .page-faq .step-card__title {
    font-size: var(--step-1);
  }

  .page-faq .layer-list > li {
    padding-left: 2.9rem;
  }

  .page-faq .contact-strip__title {
    font-size: var(--step-2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-card,
  .page-faq .apple-step,
  .page-faq .step-rail__link {
    transition: none;
  }

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