.page-faq {
  --faq-line: 1px solid var(--c-grid);
  --faq-accent-soft: rgba(53, 240, 216, 0.14);
  --faq-paper-ink: #17324A;
  --faq-paper-rule: rgba(10, 34, 55, 0.16);
  --faq-paper-accent: #0B6B63;

  display: block;
  background: var(--c-deep);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.page-faq a {
  color: var(--c-cyan);
}

.page-faq .breadcrumb {
  padding-top: clamp(20px, 4vw, 32px);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
}

.page-faq .breadcrumb a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .breadcrumb a:hover {
  border-bottom-color: currentColor;
}

.page-faq .breadcrumb span[aria-hidden="true"] {
  color: var(--c-grid);
  margin: 0 6px;
}

/* ── 首屏 ───────────────────────────────────────── */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 6vw, 68px) 0 clamp(34px, 6vw, 62px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -28%;
  right: -12%;
  width: min(660px, 78vw);
  height: min(660px, 78vw);
  background: linear-gradient(135deg, var(--faq-accent-soft), rgba(53, 240, 216, 0) 64%);
  clip-path: polygon(24% 0, 100% 0, 100% 100%, 0 72%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--c-grid);
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-cyan);
  margin: 0;
}

.page-faq h1 {
  margin: 14px 0 0;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(29px, 6.4vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-hero .lede {
  margin: 20px 0 0;
  max-width: 64ch;
  font-size: clamp(15.5px, 1.3vw, 17px);
  font-weight: 300;
  color: var(--ink-dim);
}

.page-faq .faq-hero-note {
  margin: 24px 0 0;
  padding-left: 16px;
  max-width: 52ch;
  border-left: 2px solid var(--c-cyan);
  font-size: 14.5px;
  font-weight: 300;
  color: var(--ink-mute);
}

/* ── 通用章节标题 ───────────────────────────────── */
.page-faq .section-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 4.4vw, 34px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ink);
}

/* ── 高频问题 ───────────────────────────────────── */
.page-faq .faq-quick {
  padding: clamp(34px, 6vw, 66px) 0 clamp(36px, 6vw, 70px);
}

.page-faq .faq-quick-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(22px, 4vw, 36px);
  background: var(--c-grid);
  border: var(--faq-line);
}

.page-faq .faq-quick-card {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 26px 22px 30px;
  background: var(--c-steel);
}

.page-faq .faq-quick-q {
  margin: 6px 0 0;
  font-family: var(--font-body);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-dim);
}

.page-faq .faq-quick-a {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 800;
  font-size: clamp(23px, 4.2vw, 30px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--c-cyan);
}

.page-faq .faq-quick-basis {
  margin: 4px 0 0;
  font-size: 14.5px;
  font-weight: 300;
  line-height: 1.72;
  color: var(--ink-mute);
}

.page-faq .faq-jump {
  justify-self: start;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

/* ── 主题分组 ───────────────────────────────────── */
.page-faq .faq-group {
  padding: clamp(40px, 7vw, 84px) 0;
  border-top: var(--faq-line);
}

.page-faq .faq-group-head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .faq-group-lede {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 15px;
  font-weight: 300;
  color: var(--ink-mute);
}

.page-faq .faq-split {
  display: grid;
  gap: 24px;
}

.page-faq .faq-terms {
  border-top: 2px solid var(--c-grid);
  padding-top: 16px;
}

.page-faq .faq-terms-head {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .faq-term-list {
  margin: 0;
}

.page-faq .faq-term-list dt {
  margin-top: 14px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-term-list dt:first-child {
  margin-top: 0;
}

.page-faq .faq-term-list dd {
  margin: 4px 0 0;
  font-size: 13.5px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--ink-mute);
}

/* ── 问答条目 ───────────────────────────────────── */
.page-faq .faq-items {
  border-top: var(--faq-line);
}

.page-faq .faq-item {
  border-bottom: var(--faq-line);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item > summary:hover {
  color: var(--c-cyan);
}

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  padding-left: 10px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.4;
  color: var(--c-cyan);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
}

.page-faq .faq-item-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}

.page-faq .faq-item-q {
  flex: 1 1 auto;
}

.page-faq .faq-item-body {
  display: grid;
  gap: 12px;
  padding: 0 2px 22px;
}

.page-faq .faq-item-body p {
  margin: 0;
  font-size: 15.5px;
  font-weight: 300;
  line-height: 1.78;
  color: var(--ink-dim);
}

.page-faq .note {
  font-size: 13.5px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--ink-mute);
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-item[open] .faq-item-body {
    animation: faq-open 0.24s var(--ease);
  }
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ── 配图 ───────────────────────────────────────── */
.page-faq .faq-figure {
  margin: 28px 0 0;
  padding: 10px;
  border: var(--faq-line);
  background: var(--c-trench);
}

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

.page-faq .faq-figure .media-caption {
  margin: 10px 2px 2px;
  font-size: 13px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--ink-mute);
}

/* ── 流程链 ─────────────────────────────────────── */
.page-faq .faq-flow {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--c-grid);
  border: var(--faq-line);
}

.page-faq .faq-flow-step {
  position: relative;
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  background: var(--c-deep);
}

.page-faq .faq-flow-num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
}

.page-faq .faq-flow-label {
  font-size: 15px;
  font-weight: 400;
  color: var(--ink-dim);
}

/* ── 全宽判读带 ─────────────────────────────────── */
.page-faq .faq-band {
  position: relative;
  padding: clamp(36px, 6vw, 72px) 0;
  background: var(--c-trench);
  border-top: 1px solid var(--c-grid);
  border-bottom: 1px solid var(--c-grid);
}

.page-faq .faq-band::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-coral));
}

.page-faq .faq-band-head {
  margin-bottom: 8px;
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 620px;
  margin-top: 24px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-faq .faq-table caption {
  caption-side: bottom;
  padding-top: 16px;
  text-align: left;
  font-size: 13.5px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--ink-mute);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 16px 14px 16px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--c-grid);
}

.page-faq .faq-table thead th {
  padding-top: 0;
  padding-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-cyan);
  white-space: nowrap;
}

.page-faq .faq-table tbody th {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink);
  white-space: nowrap;
}

.page-faq .faq-table td {
  font-weight: 300;
  color: var(--ink-dim);
}

.page-faq .faq-tag {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.page-faq .faq-tag--warn {
  color: var(--c-coral);
}

.page-faq .faq-tag--caution {
  color: var(--c-amber);
}

.page-faq .faq-tag--neutral {
  color: var(--ink-mute);
}

/* ── 纸白口径区 ─────────────────────────────────── */
.page-faq .faq-paper {
  padding: clamp(26px, 5vw, 54px);
  background: var(--c-paper);
  color: var(--faq-paper-ink);
}

.page-faq .faq-paper .eyebrow {
  color: var(--faq-paper-accent);
}

.page-faq .faq-paper .section-title {
  color: #0A2237;
}

.page-faq .faq-paper .faq-group-lede {
  color: #4A6472;
}

.page-faq .faq-paper .faq-items {
  margin-top: clamp(22px, 4vw, 36px);
  border-top-color: var(--faq-paper-rule);
}

.page-faq .faq-paper .faq-item {
  border-bottom-color: var(--faq-paper-rule);
}

.page-faq .faq-paper .faq-item > summary {
  color: #0A2237;
}

.page-faq .faq-paper .faq-item > summary:hover {
  color: var(--faq-paper-accent);
}

.page-faq .faq-paper .faq-item > summary::after,
.page-faq .faq-paper .faq-item-num {
  color: var(--faq-paper-accent);
}

.page-faq .faq-paper .faq-item-body p {
  color: var(--faq-paper-ink);
}

.page-faq .faq-paper .note {
  color: #4A6472;
}

/* ── 面板与锚点 ─────────────────────────────────── */
.page-faq .faq-link-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-faq .faq-link-list a {
  font-size: 14.5px;
  line-height: 1.6;
  text-decoration: none;
  border-bottom: 1px solid var(--c-grid);
  padding-bottom: 10px;
  display: block;
}

.page-faq .faq-link-list a:hover {
  border-bottom-color: var(--c-cyan);
}

.page-faq .faq-link-list li:last-child a {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-split--even .faq-split-aside .note {
  margin: 18px 0 0;
}

/* ── 章节导轨 ───────────────────────────────────── */
.page-faq .anchor-rail {
  display: none;
}

/* ── 页尾回到面板 ───────────────────────────────── */
.page-faq .faq-closing {
  padding: clamp(44px, 7vw, 88px) 0 clamp(56px, 8vw, 104px);
}

.page-faq .faq-closing-inner {
  padding: clamp(26px, 4vw, 44px);
  background: var(--c-steel);
  border: var(--faq-line);
  border-left: 3px solid var(--c-cyan);
}

.page-faq .faq-closing-text {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  font-weight: 300;
  color: var(--ink-dim);
}

.page-faq .faq-closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ── 平板与桌面 ─────────────────────────────────── */
@media (min-width: 760px) {
  .page-faq .faq-quick-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-item-body {
    padding-left: 44px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(200px, 4fr) minmax(0, 8fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-terms {
    border-top: 0;
    border-left: 2px solid var(--c-grid);
    padding-top: 0;
    padding-left: 20px;
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-split--even {
    grid-template-columns: minmax(0, 8fr) minmax(200px, 4fr);
  }

  .page-faq .faq-quick-card {
    padding: 30px 26px 34px;
  }
}

@media (min-width: 1440px) {
  .page-faq .anchor-rail {
    display: block;
    position: fixed;
    top: 46%;
    right: 26px;
    z-index: 6;
    width: 128px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    line-height: 2.1;
  }

  .page-faq .anchor-rail a {
    display: block;
    color: var(--ink-mute);
    text-decoration: none;
    border-left: 1px solid var(--c-grid);
    padding-left: 10px;
  }

  .page-faq .anchor-rail a:hover,
  .page-faq .anchor-rail a[aria-current="true"] {
    color: var(--c-cyan);
    border-left-color: var(--c-cyan);
  }
}
<<<END>>>