.page-faq {
  --faq-gap: clamp(16px, 2.4vw, 28px);
  --faq-pad: clamp(18px, 2.6vw, 30px);
  padding-bottom: clamp(56px, 9vw, 110px);
}

.page-faq .section {
  padding-top: clamp(28px, 5vw, 56px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-lead {
  padding-top: clamp(16px, 3vw, 30px);
}

.page-faq .faq-lead-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-faq .faq-title {
  margin: 14px 0 0;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--white);
  max-width: 20ch;
}

.page-faq .faq-lede {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.9;
  color: var(--slate);
}

.page-faq .faq-lead-side {
  padding: var(--faq-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--glass);
  box-shadow: var(--shadow-glass);
}

.page-faq .faq-facts {
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: rgba(11, 16, 48, 0.4);
}

.page-faq .faq-fact-num {
  flex: none;
  min-width: 2.2ch;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3.4vw, 30px);
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-fact:nth-child(2) .faq-fact-num,
.page-faq .faq-fact:nth-child(4) .faq-fact-num {
  color: var(--orange);
}

.page-faq .faq-fact-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-fact-unit {
  display: inline-block;
  margin-right: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--white);
}

/* ---------- 主题切换 ---------- */
.page-faq .faq-body-head {
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-body-title {
  margin: 10px 0 0;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line-soft);
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-tab {
  position: relative;
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--slate);
  font-family: var(--font-cn);
  font-size: 15px;
  line-height: 1.2;
  cursor: pointer;
  transition: color 240ms var(--ease), background-color 240ms var(--ease),
    border-color 240ms var(--ease);
}

.page-faq .faq-tab::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: -7px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 240ms var(--ease);
}

.page-faq .faq-tab:hover {
  color: var(--white);
  border-color: var(--line);
}

.page-faq .faq-tab[aria-selected="true"],
.page-faq .faq-tab.is-active {
  color: var(--white);
  background: var(--glass-strong);
  border-color: var(--line);
}

.page-faq .faq-tab[aria-selected="true"]::after,
.page-faq .faq-tab.is-active::after {
  transform: scaleX(1);
}

.page-faq .faq-tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-tab-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-tab-text {
  white-space: nowrap;
}

.page-faq .faq-panels {
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-faq .faq-panel {
  display: grid;
  gap: var(--faq-gap);
}

/* ---------- 内容块 ---------- */
.page-faq .faq-block {
  padding: var(--faq-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--glass);
}

.page-faq .faq-block-title {
  margin: 12px 0 0;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.3;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.01em;
}

.page-faq .faq-block-desc {
  margin: 12px 0 4px;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--slate);
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .qa {
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa-list > li:first-child .qa {
  border-top: 0;
}

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--white);
  transition: color 200ms var(--ease);
}

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

.page-faq .qa-q:hover {
  color: var(--cyan);
}

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.page-faq .qa-num {
  flex: none;
  width: 40px;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .qa-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa-arrow {
  flex: none;
  width: 9px;
  height: 9px;
  margin-left: auto;
  margin-top: 6px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.page-faq .qa[open] .qa-arrow {
  transform: rotate(225deg);
  margin-top: 11px;
}

.page-faq .qa-a {
  padding: 0 0 20px 52px;
}

.page-faq .qa-a p {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--slate);
}

.page-faq .qa-a p + .faq-steps {
  margin-top: 14px;
}

/* ---------- 步骤条 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding-bottom: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 25px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--cyan), rgba(53, 224, 200, 0));
}

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-step-num {
  flex: none;
  width: 23px;
  height: 23px;
  display: grid;
  place-items: center;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
}

/* ---------- 图片 ---------- */
.page-faq .faq-shot {
  margin: 20px 0 4px;
}

.page-faq .faq-frame {
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-faq .faq-frame--wide {
  aspect-ratio: 16 / 10;
}

.page-faq .faq-frame--tall {
  aspect-ratio: 3 / 4;
}

.page-faq .faq-shot .media-frame img,
.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-shot figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 纸色反馈卡 ---------- */
.page-faq .faq-paper {
  margin-top: 20px;
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: var(--paper);
  color: var(--ink);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-paper p {
  margin: 8px 0 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-paper .label {
  margin: 0;
  color: var(--ink);
  opacity: 0.68;
}

.page-faq .faq-paper-mail {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.01em;
  word-break: break-all;
}

.page-faq .faq-paper a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-lead-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(300px, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-lead-side {
    margin-top: 10px;
  }

  .page-faq .faq-panel--split {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
    align-items: start;
  }

  .page-faq .faq-shot--tall {
    margin-top: 0;
  }

  .page-faq .faq-tab {
    padding: 13px 22px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-fact {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

/* ---------- 小屏微调 ---------- */
@media (max-width: 560px) {
  .page-faq .faq-block,
  .page-faq .faq-lead-side {
    padding: 18px 16px;
  }

  .page-faq .qa-q {
    font-size: 15px;
    gap: 10px;
  }

  .page-faq .qa-num {
    width: 34px;
  }

  .page-faq .qa-a {
    padding-left: 44px;
  }

  .page-faq .faq-tab {
    padding: 11px 15px;
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-arrow,
  .page-faq .faq-tab,
  .page-faq .faq-tab::after {
    transition-duration: 1ms;
  }
}
<<<END>>>