.page-faq {
  --faq-rail: 200px;
  --faq-gutter: 48px;
  --faq-break: 1080px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 16px;
  padding: 20px 0 38px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.2vw, 56px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 15em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 44em;
  color: var(--muted);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--muted);
}

.page-faq .faq-hero__meta-item {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
}

.page-faq .faq-hero__num {
  font-size: 24px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: -0.02em;
}

/* ---------- 左轴 / 右侧布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 34px;
  padding: 34px 0 76px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--muted-2);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__item {
  flex: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 12px 20px 12px 0;
  margin-right: 20px;
  color: var(--muted);
  font-size: 15px;
  text-decoration: none;
  white-space: nowrap;
  border-left: 2px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-index__num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted-2);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--text);
  border-left-color: var(--cyan);
  outline: none;
}

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

  .page-faq .faq-index {
    position: sticky;
    top: 36px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    overflow: visible;
    border-bottom: 0;
  }

  .page-faq .faq-index__item {
    flex: initial;
  }

  .page-faq .faq-index__link {
    padding: 12px 8px 12px 12px;
    margin-right: 0;
    white-space: normal;
    line-height: 1.45;
    border-bottom: 1px solid var(--line);
    transition: color 0.18s var(--ease), border-color 0.18s var(--ease),
      background-color 0.18s var(--ease);
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: var(--ink-2);
    border-left-color: var(--cyan);
    border-bottom-color: var(--line);
  }
}

/* ---------- 内容组 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group {
  padding-bottom: 42px;
  margin-bottom: 42px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 92px;
}

.page-faq .faq-group--last {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 10px;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-faq .faq-group__intro {
  margin: 0 0 20px;
  max-width: 44em;
  color: var(--muted);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  overflow: hidden;
}

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

.page-faq .faq-figure__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--muted-2);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  margin: 0 0 10px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
  background: var(--ink-3);
}

.page-faq .qa__head {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) 14px;
  align-items: start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  transition: color 0.18s var(--ease);
}

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

.page-faq .qa__head::marker {
  content: "";
}

.page-faq .qa__head:hover {
  color: #ffffff;
}

.page-faq .qa__head:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}

.page-faq .qa__num {
  font-size: 12px;
  line-height: 2.1;
  letter-spacing: 0.08em;
  color: var(--muted-2);
  transition: color 0.18s var(--ease);
}

.page-faq .qa[open] .qa__num {
  color: var(--cyan);
}

.page-faq .qa__q {
  display: block;
  min-width: 0;
}

.page-faq .qa__mark {
  position: relative;
  justify-self: end;
  width: 13px;
  height: 13px;
  margin-top: 5px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--muted-2);
  transition: transform 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 6px;
  width: 13px;
  height: 1.5px;
}

.page-faq .qa__mark::after {
  left: 6px;
  top: 0;
  width: 1.5px;
  height: 13px;
}

.page-faq .qa[open] .qa__mark::before {
  background: var(--cyan);
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
}

.page-faq .qa__body {
  padding: 0 16px 20px 54px;
}

.page-faq .qa__concl {
  margin: 0;
  max-width: 46em;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .qa__concl strong {
  color: var(--text);
  font-weight: 600;
}

/* 步骤 */
.page-faq .qa__steps {
  counter-reset: faqstep;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  max-width: 46em;
}

.page-faq .qa__step {
  counter-increment: faqstep;
  position: relative;
  padding-left: 36px;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

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

.page-faq .qa__step::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.2em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .qa__step::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 0.85em;
  width: 9px;
  height: 1px;
  background: var(--line);
}

/* 自检清单 */
.page-faq .qa__checklist {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  max-width: 46em;
  border-top: 1px solid var(--line);
}

.page-faq .qa__check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .qa__check::before {
  content: "";
  flex: none;
  width: 11px;
  height: 1px;
  margin-top: 0.72em;
  background: var(--muted-2);
}

/* ---------- 联系与准备 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 16px;
  margin-bottom: 24px;
}

@media (min-width: 640px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

.page-faq .faq-contact__col {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.page-faq .faq-contact__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted-2);
}

.page-faq .faq-contact__val {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted-2);
}

.page-faq .faq-copy {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-copy:hover,
.page-faq .faq-copy:focus-visible {
  border-color: var(--blue);
  background: var(--ink-3);
  outline: none;
}

.page-faq .faq-copy__val {
  font-size: 14px;
  letter-spacing: 0.01em;
  word-break: break-all;
}

.page-faq .faq-copy__hint {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted-2);
  transition: color 0.18s var(--ease);
}

.page-faq .faq-copy[data-copied] {
  border-color: var(--cyan);
}

.page-faq .faq-copy[data-copied] .faq-copy__hint {
  font-size: 0;
  color: var(--cyan);
}

.page-faq .faq-copy[data-copied] .faq-copy__hint::after {
  content: "已复制";
  font-size: 12px;
}

.page-faq .faq-prep {
  margin-bottom: 26px;
}

.page-faq .faq-prep__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.page-faq .faq-contact__more {
  margin: 0;
  max-width: 46em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted-2);
}

.page-faq .faq-contact__more a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.18s var(--ease);
}

.page-faq .faq-contact__more a:hover,
.page-faq .faq-contact__more a:focus-visible {
  border-bottom-color: var(--blue);
}

/* ---------- 窄屏收束 ---------- */
@media (max-width: 560px) {
  .page-faq .qa__head {
    grid-template-columns: 22px minmax(0, 1fr) 12px;
    gap: 9px;
    padding: 14px 13px;
    font-size: 16px;
  }

  .page-faq .qa__body {
    padding: 0 13px 18px 13px;
  }

  .page-faq .qa__step {
    padding-left: 30px;
  }

  .page-faq .qa__step::after {
    left: 18px;
    width: 7px;
  }

  .page-faq .faq-hero__meta {
    gap: 8px 22px;
  }

  .page-faq .faq-contact__col {
    padding: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
<<<END>>>