.page-faq {
  --faq-cut: 18px;
  --faq-rail-w: 15rem;
  --faq-trap: var(--ember-500);
  background: var(--ink-950);
  color: var(--text);
}

/* ---------- 顶部标题区 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 2.5rem 0 1.75rem;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(240px, 42%);
  height: 2px;
  background: var(--cyan-400);
}

.page-faq .faq-hero h1 {
  margin: 0.6rem 0 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-size: clamp(1.95rem, 6.4vw, 3.75rem);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 1.15rem 0 0;
  max-width: 62ch;
  font-size: clamp(0.95rem, 2.4vw, 1.05rem);
  line-height: 1.78;
  color: var(--text-dim);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 1.7rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.8rem;
}

.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.page-faq .faq-hero__stats b {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--cyan-400);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 1.5rem;
  padding: 1.75rem 0 4rem;
  align-items: start;
}

/* ---------- 左侧步骤导航 ---------- */
.page-faq .faq-rail {
  border-top: 1px solid var(--hairline-soft);
  padding-top: 1rem;
}

.page-faq .faq-rail__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0.5rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-rail__list li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.72rem;
  font-size: 0.82rem;
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
  background: var(--navy-800);
  border: 1px solid var(--edge);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: color var(--t-fast), border-color var(--t-fast), background-color var(--t-fast);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-faq .faq-rail__idx {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--cyan-700);
}

/* ---------- 右侧正文 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 1.15rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px dashed var(--hairline-soft);
}

.page-faq .faq-filter__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

/* ---------- 教程分组 ---------- */
.page-faq .faq-group {
  position: relative;
  margin-bottom: 2rem;
  padding: 1.45rem 1.15rem 1.5rem;
  background: var(--navy-800);
  border: 1px solid var(--edge);
  scroll-margin-top: 6rem;
  clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% - var(--faq-cut)),
    calc(100% - var(--faq-cut)) 100%,
    0 100%
  );
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.45rem;
  width: 3px;
  height: 2.1rem;
  background: linear-gradient(180deg, var(--cyan-400), var(--cyan-700));
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem 0.8rem;
  padding-left: 0.7rem;
  margin-bottom: 0.7rem;
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--cyan-400);
}

.page-faq .faq-group__head h2 {
  flex: 1 1 14rem;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3.4vw, 1.85rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__note {
  margin: 0 0 1.15rem;
  padding-left: 0.7rem;
  max-width: 64ch;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--text-dim);
}

/* ---------- 步骤链 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faqstep;
}

.page-faq .faq-steps > li {
  position: relative;
  counter-increment: faqstep;
  padding: 0 0 1.15rem 2.1rem;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .faq-steps > li::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 1.5rem;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--hairline), rgba(53, 242, 214, 0));
}

.page-faq .faq-steps > li::after {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 1.15rem;
  height: 1.15rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--ink-950);
  background: var(--cyan-400);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.page-faq .faq-steps > li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps > li:last-child::before {
  display: none;
}

/* ---------- 易错点提示条 ---------- */
.page-faq .faq-trap {
  position: relative;
  margin: 1.2rem 0 0;
  padding: 0.72rem 0.9rem 0.72rem 1.85rem;
  font-size: 0.86rem;
  line-height: 1.68;
  color: var(--text);
  border-left: 2px solid var(--faq-trap);
  background: linear-gradient(90deg, rgba(255, 90, 43, 0.16), rgba(255, 90, 43, 0) 74%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-faq .faq-trap::before {
  content: "!";
  position: absolute;
  left: 0.62rem;
  top: 0.72rem;
  width: 0.9rem;
  height: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  line-height: 1;
  color: var(--ink-950);
  background: var(--faq-trap);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

/* ---------- 配图 ---------- */
.page-faq .faq-shot {
  margin: 0 0 1.25rem;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--edge);
  background: var(--navy-700);
}

.page-faq .faq-shot figcaption,
.page-faq .faq-shot .media-frame__cap {
  margin-top: 0.5rem;
  font-size: 0.76rem;
  line-height: 1.62;
  color: var(--text-dim);
}

.page-faq .faq-group__split {
  display: grid;
  gap: 0.5rem;
}

/* ---------- 底部联系区 ---------- */
.page-faq .faq-outro {
  margin-top: 1.4rem;
  padding: 1.3rem 1.1rem 1.4rem;
  background: var(--navy-700);
  border-left: 3px solid var(--cyan-400);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-faq .faq-outro__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.8vw, 1.4rem);
  letter-spacing: -0.005em;
  color: var(--white);
}

.page-faq .faq-outro__text {
  margin: 0.5rem 0 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-faq .faq-channels {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-channels li {
  padding: 0.7rem 0.8rem;
  background: var(--ink-950);
  border: 1px solid var(--edge);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
}

.page-faq .faq-channels__label {
  display: block;
  margin-bottom: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-faq .faq-channels__value {
  display: block;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-outro__note {
  margin: 1rem 0 0;
  font-size: 0.84rem;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-faq .faq-outro__note a,
.page-faq .faq-outro__links a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 214, 0.4);
}

.page-faq .faq-outro__note a:hover,
.page-faq .faq-outro__links a:hover,
.page-faq .faq-outro__note a:focus-visible,
.page-faq .faq-outro__links a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

.page-faq .faq-outro__links {
  margin: 1.1rem 0 0;
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 窄屏适配 ---------- */
@media (max-width: 420px) {
  .page-faq .faq-group {
    padding: 1.25rem 0.9rem 1.3rem;
  }

  .page-faq .faq-steps > li {
    padding-left: 1.85rem;
  }

  .page-faq .faq-steps > li::before {
    left: 0.5rem;
  }

  .page-faq .faq-filter__count {
    margin-left: 0;
    width: 100%;
  }
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-group {
    padding: 1.7rem 1.6rem 1.8rem;
  }

  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.6fr);
    gap: 1.6rem;
    align-items: start;
    margin-bottom: 1rem;
  }

  .page-faq .faq-group__split .faq-shot {
    margin: 0.35rem 0 0;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 3rem;
    padding-top: 2.5rem;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 6rem;
    padding-top: 0;
    border-top: 0;
  }

  .page-faq .faq-rail__list {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-rail__list li {
    margin-bottom: 0.4rem;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    padding: 0.45rem 0.65rem;
    white-space: normal;
    line-height: 1.45;
    color: var(--text-dim);
    background: transparent;
    border: 0;
    border-left: 2px solid var(--edge);
    clip-path: none;
    transition: color var(--t-fast), border-color var(--t-fast), background-color var(--t-fast);
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    color: var(--cyan-400);
    border-left-color: var(--cyan-400);
    background: linear-gradient(90deg, rgba(53, 242, 214, 0.12), rgba(53, 242, 214, 0) 82%);
  }

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

  .page-faq .faq-group {
    margin-bottom: 2.4rem;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-hero {
    padding-top: 3.5rem;
  }

  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.52fr);
  }
}
<<<END>>>