/* ===== 常见问题 · 页面专属样式 ===== */
.page-faq {
  --faq-gap: clamp(16px, 2.2vw, 30px);
  --faq-pad: clamp(16px, 2.2vw, 26px);
  --faq-accent: var(--cyan);
  display: block;
}

.page-faq .faq-hero__intro,
.page-faq .faq-list,
.page-faq .faq-index {
  min-width: 0;
}

/* ---- 首屏 ---- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(16px, 3vw, 30px) 0 clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__intro {
  max-width: 46rem;
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 12px;
}

.page-faq h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(30px, 7vw, 56px);
  line-height: 1.05;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
}

.page-faq .faq-facts {
  list-style: none;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.page-faq .faq-facts li {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  padding: 10px 13px;
}

.page-faq .faq-facts li:nth-child(2) {
  border-left-color: var(--amber);
}

.page-faq .faq-facts li:nth-child(3) {
  border-left-color: var(--green);
}

.page-faq .faq-facts__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.4vw, 22px);
  color: var(--ink);
  line-height: 1.3;
}

.page-faq .faq-facts__lab {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

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

.page-faq .faq-scan {
  position: absolute;
  left: 0;
  right: 0;
  top: -40%;
  height: 40%;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(0, 229, 255, 0) 0%, rgba(0, 229, 255, 0.16) 50%, rgba(0, 229, 255, 0) 100%);
  animation: faq-scan 7s linear infinite;
}

@keyframes faq-scan {
  0% { top: -40%; }
  100% { top: 110%; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-scan {
    animation: none;
    top: 28%;
    opacity: 0.35;
  }
}

/* ---- 双栏主体 ---- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  padding: clamp(26px, 4vw, 48px) 0 0;
}

/* 左侧常驻索引 */
.page-faq .faq-index {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: var(--faq-pad);
}

.page-faq .faq-index::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 78px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-faq .faq-index__nav {
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 14.5px;
  color: var(--ink);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-index__link .mono {
  font-size: 11.5px;
  color: var(--muted);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--layer);
  border-left-color: var(--cyan);
  color: var(--cyan);
  outline: none;
}

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

.page-faq .faq-index__filter {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-index__filter-label {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-index__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .filter-btn {
  font-size: 12.5px;
  padding: 6px 11px;
  border-radius: 999px;
}

.page-faq .filter-status {
  margin: 12px 0 0;
  font-size: 12px;
  color: var(--muted);
}

/* 右侧问答列 */
.page-faq .faq-list {
  display: grid;
  gap: clamp(30px, 4.4vw, 50px);
}

.page-faq .faq-group {
  --accent: var(--cyan);
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-list > .faq-group:nth-child(2) { --accent: var(--orange); }
.page-faq .faq-list > .faq-group:nth-child(3) { --accent: var(--green); }
.page-faq .faq-list > .faq-group:nth-child(4) { --accent: var(--cyan); }
.page-faq .faq-list > .faq-group:nth-child(5) { --accent: var(--amber); }
.page-faq .faq-list > .faq-group:nth-child(6) { --accent: var(--orange); }

.page-faq .faq-group:not(:has(.faq-item:not([hidden]):not(.is-hidden))) {
  display: none;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  margin-top: 4px;
  padding: 3px 7px;
  font-size: 12.5px;
  line-height: 1;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.page-faq .faq-group__head h2 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-faq .faq-group__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 40rem;
}

.page-faq .faq-group__media {
  position: relative;
  margin: 0 0 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
}

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

.page-faq .faq-group__media .media-frame__tag {
  position: absolute;
  left: 12px;
  bottom: 12px;
}

.page-faq .faq-group__items {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-item[open] {
  background: var(--layer);
  border-color: var(--accent);
}

.page-faq .faq-item__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: clamp(13px, 1.8vw, 17px) clamp(14px, 2vw, 20px);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__head:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  margin-top: 4px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.page-faq .faq-item__q {
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .faq-item__chev {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin: 6px 2px 0 auto;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__chev {
  transform: rotate(-135deg);
}

.page-faq .faq-item__body {
  margin: 0 0 clamp(14px, 2vw, 18px) clamp(14px, 2vw, 20px);
  padding: 2px 0 0 14px;
  border-left: 2px solid var(--accent);
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-item__body p {
  margin: 0;
}

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

.page-faq [data-filter-item][hidden] {
  display: none;
}

/* ---- 收尾求助面板 ---- */
.page-faq .faq-help {
  position: relative;
  margin-top: clamp(34px, 5vw, 62px);
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--line);
  background: linear-gradient(135deg, var(--panel) 0%, var(--layer) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-faq .faq-help h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.2;
  color: var(--ink);
}

.page-faq .faq-help p {
  margin: 0;
  max-width: 46rem;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-help p .mono {
  color: var(--cyan);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-top {
  display: flex;
  justify-content: flex-end;
  margin-top: clamp(24px, 3vw, 38px);
}

/* ---- 断点 ---- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-faq .faq-group__media {
    margin-bottom: 20px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(26px, 3vw, 52px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-item__body {
    padding-right: clamp(20px, 3vw, 42px);
  }
}
<<<END>>>