.page-faq {
  --faq-zone-a: rgba(16, 24, 40, 0.62);
  --faq-zone-b: rgba(22, 32, 46, 0.55);
  color: var(--silver);
}

.page-faq .faq-hero {
  padding-top: 20px;
  padding-bottom: 28px;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 6.4vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 20em;
}

.page-faq .faq-lead {
  margin: 16px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .faq-meta {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mute);
}

.page-faq .faq-meta .data {
  color: var(--cyan);
}

/* 快捷入口条：三块不等宽色块 */
.page-faq .faq-quick {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding-bottom: 32px;
}

.page-faq .quick-card {
  position: relative;
  display: block;
  padding: 16px 18px 16px 22px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--silver);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .quick-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 2px;
  background: var(--line);
  transition: background 180ms var(--ease);
}

.page-faq .quick-card--amber::before { background: var(--amber); }
.page-faq .quick-card--rose::before { background: var(--rose); }
.page-faq .quick-card--grass::before { background: var(--grass); }

.page-faq .quick-card:hover,
.page-faq .quick-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
  background: var(--deep);
}

.page-faq .quick-card:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .quick-k {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--white);
  letter-spacing: 0.01em;
}

.page-faq .quick-t {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mute);
}

.page-faq .quick-go {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* 主体两栏 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding-bottom: 72px;
}

.page-faq .faq-index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mute);
  text-transform: uppercase;
}

.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--mute);
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--white);
  border-color: var(--cyan);
  background: var(--deep);
}

.page-faq .faq-index-link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-idx-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-idx-name {
  letter-spacing: 0.06em;
}

/* 分组 */
.page-faq .faq-group {
  position: relative;
  padding: 24px 18px 8px;
  background: var(--faq-zone-a);
  border-radius: var(--radius);
  scroll-margin-top: 96px;
}

.page-faq .faq-group:nth-child(even) {
  background: var(--faq-zone-b);
}

.page-faq .faq-group:target {
  background: var(--ink);
}

.page-faq .faq-group + .faq-group {
  margin-top: 20px;
}

.page-faq .faq-group-head {
  padding-left: 14px;
  border-left: 3px solid var(--line);
  margin-bottom: 16px;
}

.page-faq .faq-group:target .faq-group-head {
  border-left-color: var(--cyan);
}

.page-faq .faq-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-group-head h2 {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 4.6vw, 28px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-sub {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mute);
}

/* 配图 */
.page-faq .faq-figure {
  margin: 0 0 18px;
  padding: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--deep);
}

.page-faq .faq-figure figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--mute);
}

/* 手风琴 */
.page-faq details {
  border-top: 1px solid var(--line);
  transition: background 180ms var(--ease);
}

.page-faq details:last-of-type {
  border-bottom: 1px solid var(--line);
}

.page-faq details[open] {
  background: rgba(43, 232, 208, 0.035);
}

.page-faq summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 30px 15px 12px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.55;
  color: var(--white);
  transition: color 160ms var(--ease);
}

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

.page-faq summary::before {
  content: "";
  flex: 0 0 auto;
  width: 3px;
  align-self: stretch;
  min-height: 18px;
  margin-top: 2px;
  border-radius: 2px;
  background: var(--line);
  opacity: 0;
  transition: opacity 180ms var(--ease), background 180ms var(--ease);
}

.page-faq details[open] summary::before {
  opacity: 1;
  background: var(--cyan);
}

.page-faq summary::after {
  content: "+";
  position: absolute;
  right: 10px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--mute);
  transition: transform 180ms var(--ease), color 180ms var(--ease);
}

.page-faq details[open] summary::after {
  content: "−";
  color: var(--cyan);
}

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

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

.page-faq .faq-answer {
  padding: 0 16px 16px 25px;
  animation: faq-fade 160ms var(--ease);
}

.page-faq .faq-answer p {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

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

.page-faq .faq-link {
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

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

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

.page-faq .faq-steps {
  margin: 0 0 10px;
  padding-left: 20px;
  color: var(--silver);
}

.page-faq .faq-steps li {
  margin-bottom: 6px;
  font-size: 15px;
  line-height: 1.72;
}

.page-faq .faq-steps li::marker {
  font-family: var(--font-mono);
  color: var(--cyan);
}

.page-faq .faq-ui {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--void);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

@keyframes faq-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-card,
  .page-faq summary::after,
  .page-faq .faq-answer {
    transition: none;
    animation: none;
  }
  .page-faq .quick-card:hover {
    transform: none;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-quick {
    grid-template-columns: 1.35fr 1fr 0.9fr;
    gap: 14px;
  }
  .page-faq .faq-group {
    padding: 30px 28px 10px;
  }
  .page-faq summary {
    font-size: 16px;
    padding: 17px 36px 17px 14px;
  }
  .page-faq .faq-answer {
    padding: 0 24px 20px 29px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 28px;
    padding-bottom: 36px;
  }
  .page-faq .faq-layout {
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 44px;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-faq .faq-index-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index-link {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    width: 100%;
    padding: 8px 6px 8px 0;
    border: none;
    border-radius: 0;
    background: none;
    white-space: normal;
  }
  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    background: none;
  }
  .page-faq .faq-idx-num {
    padding-top: 1px;
    color: var(--mute);
    transition: color 160ms var(--ease);
  }
  .page-faq .faq-index-link:hover .faq-idx-num,
  .page-faq .faq-index-link:focus-visible .faq-idx-num {
    color: var(--cyan);
  }
  .page-faq .faq-idx-name {
    writing-mode: vertical-rl;
    text-orientation: upright;
    letter-spacing: 0.2em;
    font-size: 13px;
    line-height: 1.1;
    color: var(--mute);
    transition: color 160ms var(--ease);
  }
  .page-faq .faq-index-link:hover .faq-idx-name,
  .page-faq .faq-index-link:focus-visible .faq-idx-name {
    color: var(--white);
  }
  .page-faq .faq-figure {
    margin-left: -8px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-group {
    padding: 34px 36px 12px;
  }
  .page-faq .faq-lead {
    font-size: 17px;
  }
}
<<<END>>>