.page-faq {
  --faq-index-w: 268px;
  --faq-gap: clamp(12px, 2vw, 18px);
  background: var(--c-ink);
  color: var(--c-text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(18px, 3vw, 30px) clamp(30px, 5vw, 54px);
  border-bottom: var(--bw) solid var(--c-line);
  background-image:
    repeating-linear-gradient(90deg, rgba(43, 69, 96, .34) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(43, 69, 96, .34) 0 1px, transparent 1px 72px);
  background-position: top left;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(120% 90% at 78% 8%, rgba(73, 242, 208, .10), transparent 62%);
}

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

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: start;
}

.page-faq .faq-hero-copy h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 7.2vw, 64px);
  line-height: 1.06;
  letter-spacing: -.01em;
  font-weight: 700;
  color: var(--c-white);
  margin: 0 0 18px;
  max-width: 15em;
}

.page-faq .faq-hero-lead {
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--c-text);
  max-width: 60ch;
  margin: 0;
}

.page-faq .faq-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  background: var(--c-line);
  border: var(--bw) solid var(--c-line);
}

.page-faq .faq-stats li {
  background: var(--c-panel);
  padding: 14px 14px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 32px);
  line-height: 1;
  color: var(--c-white);
  letter-spacing: -.02em;
}

.page-faq .faq-stat-unit {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--c-cyan);
  margin-left: -4px;
}

.page-faq .faq-stat-label {
  flex: 1 0 100%;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--c-text-2);
}

.page-faq .faq-hero-media {
  margin: 0;
  border: var(--bw) solid var(--c-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-bottom: var(--bw) solid var(--c-line);
}

.page-faq .faq-hero-media figcaption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--c-text-2);
  padding: 10px 14px;
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 40px);
  padding-block: clamp(28px, 4.4vw, 52px);
  align-items: start;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index-card {
  border: var(--bw) solid var(--c-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
  padding: 16px 16px 14px;
}

.page-faq .faq-index-title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-cyan);
  margin: 0 0 12px;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-index-list a {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 10px 10px;
  text-decoration: none;
  color: var(--c-text);
  border-left: 3px solid transparent;
  background: transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  background: var(--c-panel-2);
  border-left-color: var(--c-cyan);
}

.page-faq .faq-index-no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-text-2);
}

.page-faq .faq-index-label {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--c-white);
}

.page-faq .faq-index-count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-text-2);
  border: 1px solid var(--c-line);
  padding: 1px 6px;
}

.page-faq .faq-index-foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--c-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text-2);
}

.page-faq .faq-index-foot a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 分类 ---------- */
.page-faq .faq-cat + .faq-cat {
  margin-top: clamp(30px, 4.6vw, 52px);
}

.page-faq .faq-cat-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: var(--faq-gap);
  border-bottom: var(--bw) solid var(--c-line);
}

.page-faq .faq-cat-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  flex: none;
  border: var(--bw) solid var(--c-line);
  background: var(--c-panel);
  color: var(--c-cyan);
}

.page-faq .faq-cat-mark svg {
  width: 22px;
  height: 22px;
}

.page-faq .faq-cat-kicker {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-text-2);
  margin: 0 0 6px;
}

.page-faq .faq-cat-head h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.2;
  letter-spacing: -.005em;
  color: var(--c-white);
  margin: 0 0 8px;
}

.page-faq .faq-cat-note {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-text-2);
  margin: 0;
  max-width: 66ch;
}

/* ---------- 问答项 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .qa {
  border: var(--bw) solid var(--c-line);
  border-left-width: 6px;
  border-left-color: var(--c-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .qa[open] {
  border-left-color: var(--c-cyan);
  background: var(--c-panel-2);
}

.page-faq .qa summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--c-white);
}

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

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: -4px;
}

.page-faq .qa-no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--c-text-2);
  padding-top: 3px;
}

.page-faq .qa[open] .qa-no {
  color: var(--c-cyan);
}

.page-faq .qa-q {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
}

.page-faq .qa-sign {
  position: relative;
  width: 18px;
  height: 18px;
  flex: none;
  margin-top: 4px;
  border: 2px solid var(--c-line);
  transition: border-color var(--dur) var(--ease);
}

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

.page-faq .qa-sign::before,
.page-faq .qa-sign::after {
  content: "";
  position: absolute;
  background: var(--c-text-2);
}

.page-faq .qa-sign::before {
  top: 3px;
  bottom: 3px;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
}

.page-faq .qa-sign::after {
  left: 3px;
  right: 3px;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .qa[open] .qa-sign::before {
  display: none;
}

.page-faq .qa[open] .qa-sign::after {
  background: var(--c-cyan);
}

.page-faq .qa-a {
  padding: 4px 16px 18px;
  border-top: 1px dashed rgba(43, 69, 96, .95);
  margin-top: 2px;
}

.page-faq .qa-a p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-text);
  max-width: 68ch;
}

.page-faq .qa-a a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 联系支持区 ---------- */
.page-faq .faq-support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-support-media {
  margin: 0;
  border: var(--bw) solid var(--c-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
  align-self: start;
}

.page-faq .faq-support-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  background: var(--c-ink);
}

.page-faq .faq-support-media figcaption {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border-top: var(--bw) solid var(--c-line);
}

.page-faq .faq-support-mail {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: .02em;
  color: var(--c-white);
  word-break: break-all;
}

.page-faq .faq-support-line {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-text-2);
}

/* ---------- 下一页指引 ---------- */
.page-faq .faq-next {
  padding-block: clamp(32px, 5vw, 60px);
  border-top: var(--bw) solid var(--c-line);
  background: var(--c-panel);
}

.page-faq .faq-next-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.page-faq .faq-next-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.8vw, 36px);
  line-height: 1.2;
  color: var(--c-white);
  margin: 10px 0 12px;
}

.page-faq .faq-next-copy p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-text-2);
  max-width: 58ch;
}

.page-faq .faq-next-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--c-line);
  border: var(--bw) solid var(--c-line);
}

.page-faq .faq-next-links a {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no label"
    "no desc";
  gap: 2px 12px;
  padding: 13px 14px;
  background: var(--c-ink);
  text-decoration: none;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-next-links a:hover,
.page-faq .faq-next-links a:focus-visible {
  background: var(--c-panel-2);
}

.page-faq .faq-next-no {
  grid-area: no;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-cyan);
}

.page-faq .faq-next-label {
  grid-area: label;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--c-white);
}

.page-faq .faq-next-desc {
  grid-area: desc;
  font-size: 12.5px;
  color: var(--c-text-2);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-next-panel {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-faq .faq-support-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
  }
}

@media (min-width: 1100px) {
  .page-faq .qa summary {
    padding: 17px 20px;
  }

  .page-faq .qa-a {
    padding: 4px 20px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa-sign,
  .page-faq .faq-index-list a,
  .page-faq .faq-next-links a {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>