.page-faq {
  --faq-measure: 40rem;
  --faq-index-w: 13rem;
  --faq-gap: clamp(28px, 5vw, 56px);
  --faq-line-pad: 18px;
  padding: clamp(18px, 4vw, 40px) 0 clamp(64px, 10vw, 140px);
  color: var(--c-silver);
}

.page-faq .breadcrumb {
  margin-bottom: clamp(20px, 4vw, 36px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  max-width: 46rem;
  padding-bottom: clamp(36px, 6vw, 72px);
}

.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 6.2vw, 3.2rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--c-glass);
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 38rem;
  font-size: clamp(1rem, 1.6vw, 1.06rem);
  line-height: 1.85;
  color: var(--c-silver);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

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

/* ---------- 分组索引 ---------- */
.page-faq .faq-index {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--c-mist);
}

.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-index-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  font-size: 0.8rem;
  line-height: 1;
  color: var(--c-mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.page-faq .faq-index-link .mono {
  font-size: 0.66rem;
  opacity: 0.75;
}

.page-faq .faq-index-link.is-active {
  color: var(--c-cyan);
  border-color: var(--cyan-line);
  background-color: rgba(61, 224, 194, 0.07);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(34px, 6vw, 68px);
}

.page-faq .faq-group:first-child {
  padding-top: 0;
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 16px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group-num {
  flex: none;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.2rem, 3.4vw, 1.65rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--c-glass);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  position: relative;
  padding: 20px 0 20px var(--faq-line-pad);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  width: 2px;
  height: 14px;
  background-color: var(--line-strong);
  transition: background-color 0.3s ease, height 0.35s ease;
}

.page-faq .faq-item[open]::before {
  background-color: var(--c-cyan);
  height: calc(100% - 44px);
}

.page-faq .faq-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-summary:focus-visible {
  outline: 1px solid var(--cyan-line);
  outline-offset: 6px;
}

.page-faq .faq-qno {
  padding-top: 0.45em;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}

.page-faq .faq-question {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(1rem, 2.4vw, 1.08rem);
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-glass);
}

.page-faq .faq-toggle {
  position: relative;
  width: 12px;
  height: 12px;
  margin-top: 0.5em;
  flex: none;
}

.page-faq .faq-toggle::before,
.page-faq .faq-toggle::after {
  content: "";
  position: absolute;
  background-color: var(--c-mist);
  transition: transform 0.25s ease, background-color 0.25s ease;
}

.page-faq .faq-toggle::before {
  left: 0;
  top: 5px;
  width: 12px;
  height: 1px;
}

.page-faq .faq-toggle::after {
  left: 5px;
  top: 0;
  width: 1px;
  height: 12px;
}

.page-faq .faq-item[open] .faq-toggle::before {
  background-color: var(--c-cyan);
}

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

.page-faq .faq-answer {
  padding: 12px 0 0 2.35rem;
}

.page-faq .faq-answer p {
  margin: 0 0 0.85em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--c-silver);
}

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

.page-faq .faq-answer a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

.page-faq .faq-answer a:hover {
  color: var(--c-glass);
}

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: 0.95em;
  letter-spacing: 0.02em;
  color: var(--c-cyan);
  padding-bottom: 1px;
  border-bottom: 1px solid var(--cyan-line);
  cursor: help;
}

.page-faq .faq-mail {
  font-size: 0.92em;
  color: var(--c-glass);
  word-break: break-all;
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 0;
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--c-mist);
}

/* ---------- 视觉停顿块 ---------- */
.page-faq .faq-break {
  margin: clamp(30px, 5vw, 52px) 0;
  padding: clamp(20px, 4vw, 30px);
  border: 1px solid var(--line);
  background-image: linear-gradient(140deg, rgba(14, 42, 69, 0.92), rgba(7, 26, 47, 0.55));
  backdrop-filter: blur(6px);
}

.page-faq .faq-break-label {
  margin: 0 0 16px;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--c-mist);
}

.page-faq .faq-caps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-cap-num {
  display: block;
  font-size: clamp(1.7rem, 5vw, 2.5rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--c-cyan);
}

.page-faq .faq-cap-label {
  display: block;
  margin-top: 10px;
  font-size: 0.76rem;
  line-height: 1.5;
  color: var(--c-mist);
}

.page-faq .faq-break-text {
  margin: 0 0 16px;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--c-silver);
}

.page-faq .faq-break-text .faq-num {
  color: var(--c-amber);
  border-bottom-color: var(--amber-line);
}

.page-faq .faq-break-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--c-amber);
  text-decoration: none;
  border-bottom: 1px solid var(--amber-line);
}

.page-faq .faq-break-link:hover {
  color: var(--c-glass);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-outro {
  margin-top: clamp(48px, 8vw, 92px);
  padding-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-outro-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.25rem, 4vw, 1.7rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--c-glass);
}

.page-faq .faq-outro-text {
  margin: 0;
  max-width: 36rem;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--c-silver);
}

.page-faq .faq-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: minmax(0, var(--faq-measure)) var(--faq-index-w);
    justify-content: center;
    gap: clamp(44px, 6vw, 88px);
  }

  .page-faq .faq-main {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-index {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
    border-top: 0;
    padding-top: 4px;
    border-left: 1px solid var(--line);
    padding-left: 20px;
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index-link {
    border: 0;
    padding: 9px 0;
    background: none;
  }

  .page-faq .faq-index-link.is-active {
    background: none;
    color: var(--c-cyan);
  }

  .page-faq .faq-answer {
    padding-left: 2.6rem;
  }
}
<<<END>>>