.page-faq {
  --faq-ink: var(--ink);
  --faq-panel: var(--deep);
  --faq-gap: 22px;
  background: var(--deep);
  color: var(--warm);
  overflow-x: hidden;
  padding-bottom: 84px;
}

.page-faq__wrap {
  padding-top: 22px;
}

/* ---------- 面包屑在深色底上的可读性 ---------- */
.page-faq .crumbs__link {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}
.page-faq .crumbs__link:hover,
.page-faq .crumbs__link:focus-visible {
  color: var(--cyan);
}
.page-faq .crumbs__sep {
  color: rgba(199, 208, 217, 0.42);
}
.page-faq .crumbs__item--current {
  color: var(--warm);
  font-weight: 600;
}

/* ---------- 首屏 ---------- */
.page-faq__intro {
  position: relative;
  padding: 34px 0 46px;
  border-bottom: 1px solid var(--line);
}
.page-faq__intro::before {
  content: "";
  position: absolute;
  inset: -34px -40px 0 -40px;
  background:
    radial-gradient(circle at 84% 8%, rgba(255, 90, 31, 0.2), transparent 54%),
    radial-gradient(circle at 6% 92%, rgba(53, 224, 208, 0.14), transparent 58%);
  pointer-events: none;
  z-index: 0;
}
.page-faq__intro > * {
  position: relative;
  z-index: 1;
}
.page-faq__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}
.page-faq__title {
  margin: 0 0 18px;
  font-size: clamp(34px, 8.4vw, 76px);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.02;
  color: var(--warm);
}
.page-faq__lede {
  margin: 0;
  max-width: 38em;
  font-size: 16.5px;
  line-height: 1.8;
  color: rgba(247, 243, 234, 0.82);
}
.page-faq__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}
.page-faq__badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}
.page-faq__badge--hot {
  border-color: rgba(255, 90, 31, 0.55);
  color: var(--orange);
  background: rgba(255, 90, 31, 0.08);
}
.page-faq__badge--cyan {
  border-color: rgba(53, 224, 208, 0.45);
  color: var(--cyan);
}

/* ---------- 手册双栏 ---------- */
.page-faq__manual {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-top: 32px;
}

.page-faq__index {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(14, 42, 71, 0.72);
  padding: 20px 18px;
}
.page-faq__index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-faq__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq__index-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  color: var(--mist);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: color var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}
.page-faq__index-list li:last-child .page-faq__index-link {
  border-bottom: 0;
}
.page-faq__index-link:hover,
.page-faq__index-link:focus-visible {
  color: var(--orange);
  padding-left: 6px;
}
.page-faq__index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
  flex: none;
}
.page-faq__index-foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(199, 208, 217, 0.7);
}

/* ---------- 章节卡 ---------- */
.page-faq__chapters {
  min-width: 0;
}
.page-faq__chapter {
  background: var(--warm);
  color: var(--faq-ink);
  border: 1px solid rgba(11, 11, 15, 0.08);
  border-radius: var(--radius-lg);
  padding: 26px 20px;
  margin-bottom: var(--faq-gap);
  box-shadow: var(--shadow-soft);
  scroll-margin-top: 92px;
}
.page-faq__chapter:last-child {
  margin-bottom: 0;
}
.page-faq__chapter-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.page-faq__chapter-index {
  font-family: var(--font-mono);
  font-size: clamp(26px, 5.4vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--orange);
  flex: none;
}
.page-faq__chapter-title {
  margin: 0;
  font-size: clamp(21px, 3.6vw, 30px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.24;
  color: var(--faq-ink);
}
.page-faq__chapter-note {
  margin: 12px 0 20px;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.76;
  color: rgba(11, 11, 15, 0.68);
}
.page-faq__chapter-note--tight {
  margin: 20px 0 0;
}
.page-faq__chapter a {
  color: var(--orange);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.page-faq__chapter a:hover,
.page-faq__chapter a:focus-visible {
  color: var(--deep);
}
.page-faq kbd {
  display: inline-block;
  min-width: 22px;
  padding: 1px 6px;
  border: 1px solid rgba(11, 11, 15, 0.2);
  border-radius: 5px;
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--deep);
  text-align: center;
}

/* ---------- 步骤条 ---------- */
.page-faq__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faqstep;
  display: grid;
  gap: 11px;
}
.page-faq__step {
  position: relative;
  counter-increment: faqstep;
  padding: 15px 16px 15px 60px;
  background: var(--paper);
  border: 1px solid rgba(11, 11, 15, 0.09);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  font-size: 15.5px;
  line-height: 1.74;
  color: rgba(11, 11, 15, 0.8);
}
.page-faq__step::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--orange);
}
.page-faq__step strong {
  color: var(--faq-ink);
  font-weight: 700;
}

/* ---------- 三级筛选维度 ---------- */
.page-faq__dims {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 11px;
}
.page-faq__dim {
  padding: 17px 16px;
  background: var(--paper);
  border: 1px solid rgba(11, 11, 15, 0.09);
  border-radius: var(--radius);
}
.page-faq__dim-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
}
.page-faq__dim-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--faq-ink);
}
.page-faq__dim-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(11, 11, 15, 0.66);
}

/* ---------- 提示块 ---------- */
.page-faq__callout {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: var(--radius);
  border: 1px solid rgba(53, 224, 208, 0.34);
  background: rgba(53, 224, 208, 0.09);
}
.page-faq__callout--quiet {
  border-color: rgba(11, 11, 15, 0.12);
  background: rgba(11, 11, 15, 0.035);
}
.page-faq__callout p {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.74;
  color: rgba(11, 11, 15, 0.76);
}
.page-faq__callout p + p {
  margin-top: 10px;
}
.page-faq__callout strong {
  color: var(--faq-ink);
  font-weight: 700;
}

/* ---------- 快捷键行 ---------- */
.page-faq__keys {
  display: grid;
  gap: 10px;
}
.page-faq__key-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius);
  background: var(--night);
  border: 1px solid rgba(199, 208, 217, 0.16);
}
.page-faq__keycap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 7px 0;
  border: 1px solid rgba(255, 90, 31, 0.5);
  border-radius: 6px;
  background: rgba(255, 90, 31, 0.12);
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
}
.page-faq__key-text {
  font-size: 15px;
  line-height: 1.66;
  color: rgba(247, 243, 234, 0.86);
}

/* ---------- 图片 ---------- */
.page-faq__figure {
  margin: 22px 0 0;
}
.page-faq__figure.media img,
.page-faq__figure .media__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}
.page-faq .media__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(11, 11, 15, 0.55);
}

/* ---------- 可展开内容组 ---------- */
.page-faq .disclosure {
  margin-bottom: 10px;
  border: 1px solid rgba(11, 11, 15, 0.1);
  border-radius: var(--radius);
  background: var(--paper);
  overflow: hidden;
}
.page-faq .disclosure__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  border: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--faq-ink);
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.page-faq .disclosure__trigger:hover,
.page-faq .disclosure__trigger:focus-visible {
  background: rgba(255, 90, 31, 0.07);
}
.page-faq .disclosure__trigger[aria-expanded="true"] {
  color: var(--orange);
}
.page-faq .disclosure__index {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
}
.page-faq .disclosure__icon {
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--orange);
}
.page-faq .disclosure__panel {
  display: none;
  padding: 0 16px 16px 16px;
  font-size: 15px;
  line-height: 1.76;
  color: rgba(11, 11, 15, 0.74);
}
.page-faq .disclosure[data-open] .disclosure__panel {
  display: block;
}
.page-faq .disclosure__panel p {
  margin: 0;
}

/* ---------- 联系信息卡 ---------- */
.page-faq__contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 11px;
  margin-top: 20px;
}
.page-faq__contact-card {
  padding: 16px;
  border: 1px solid rgba(11, 11, 15, 0.1);
  border-radius: var(--radius);
  background: var(--paper);
}
.page-faq__contact-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-faq__contact-value {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 700;
  color: var(--faq-ink);
  word-break: break-all;
}
.page-faq__contact-hint {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.68;
  color: rgba(11, 11, 15, 0.62);
}
.page-faq .copy-btn {
  display: inline-flex;
  align-items: center;
  padding: 6px 13px;
  border: 1px solid rgba(255, 90, 31, 0.45);
  border-radius: 999px;
  background: transparent;
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  background: var(--orange);
  color: var(--paper);
}

/* ---------- 底部动作 ---------- */
.page-faq__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}
.page-faq .btn--primary {
  background: var(--orange);
  border: 1px solid var(--orange);
  color: var(--paper);
}
.page-faq .btn--primary:hover,
.page-faq .btn--primary:focus-visible {
  background: #E64A12;
  border-color: #E64A12;
  color: var(--paper);
}
.page-faq .btn--quiet {
  background: transparent;
  border: 1px solid rgba(11, 11, 15, 0.22);
  color: var(--faq-ink);
}
.page-faq .btn--quiet:hover,
.page-faq .btn--quiet:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
}

/* ---------- 渐显 ---------- */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}
.page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq__chapter {
    padding: 32px 30px;
  }
  .page-faq__dims {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq__contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq__contact-card--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-faq {
    padding-bottom: 104px;
  }
  .page-faq__manual {
    grid-template-columns: 258px minmax(0, 1fr);
    gap: 48px;
    padding-top: 40px;
  }
  .page-faq__index {
    position: sticky;
    top: 96px;
    padding: 22px 20px;
  }
  .page-faq__chapter {
    padding: 38px 36px;
  }
  .page-faq__dims {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq__intro {
    padding: 46px 0 58px;
  }
}

@media (min-width: 1180px) {
  .page-faq__lede {
    font-size: 17.5px;
  }
  .page-faq__chapter-note {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-faq__index-link,
  .page-faq .disclosure__trigger,
  .page-faq .copy-btn {
    transition: none;
  }
}
<<<END>>>