.page-faq {
  --faq-aside: 236px;
  --faq-line-soft: rgba(28, 71, 103, .55);
  background: var(--night);
  color: var(--score);
  overflow-x: hidden;
}

/* 面包屑 */
.page-faq .faq-crumb {
  padding-top: clamp(20px, 4vw, 36px);
}
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .6em;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}
.page-faq .breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: .6em;
}
.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--line);
}
.page-faq .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t);
}
.page-faq .breadcrumb a:hover {
  color: var(--green);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px) 0 clamp(44px, 7vw, 92px);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -14%;
  right: -22%;
  width: 70%;
  height: 128%;
  background: linear-gradient(152deg, rgba(123, 91, 255, .34), rgba(200, 255, 61, .10) 58%, transparent 88%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  bottom: 12%;
  width: 45%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
  transform: rotate(-7deg);
  pointer-events: none;
}
.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero__title {
  margin: .4em 0 .55em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.4vw, 76px);
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--score);
  max-width: 18ch;
}
.page-faq .faq-hero__lede {
  max-width: 58ch;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}
.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}
.page-faq .faq-hero__stats .num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}
.page-faq .faq-hero__stats li span:last-child {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* 主体栅格 */
.page-faq .faq-body {
  padding-bottom: clamp(48px, 8vw, 110px);
}
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}
.page-faq .faq-aside {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.page-faq .faq-aside .toc {
  display: flex;
  flex-direction: column;
  margin: 10px 0 16px;
}
.page-faq .faq-aside__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}
.page-faq .toc__link {
  display: block;
  padding: 8px 0 8px 12px;
  border-left: 2px solid transparent;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t), border-color var(--t);
}
.page-faq .toc__link:hover,
.page-faq .toc__link[data-active] {
  color: var(--score);
  border-left-color: var(--green);
}

/* 章节通用 */
.page-faq .faq-block {
  padding-top: clamp(34px, 6vw, 72px);
}
.page-faq .faq-block:first-child {
  padding-top: 0;
}
.page-faq .section-title {
  margin: .15em 0 .5em;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(25px, 3.6vw, 42px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--score);
}
.page-faq .faq-block__lede {
  max-width: 62ch;
  margin: 0 0 4px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}
.page-faq .link-sweep {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, .35);
  transition: border-color var(--t), color var(--t);
}
.page-faq .link-sweep:hover {
  border-bottom-color: var(--green);
}

/* 图片容器 */
.page-faq .media-frame {
  margin: 22px 0 26px;
}
.page-faq .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--faq-line-soft);
  object-fit: cover;
}
.page-faq .media-frame__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* 刷新流程 */
.page-faq .flow-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .flow-step {
  position: relative;
  padding: 18px 18px 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: border-color var(--t), transform var(--t);
}
.page-faq .flow-step:hover {
  border-color: var(--green);
  transform: translateY(-2px);
}
.page-faq .flow-step__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--purple);
}
.page-faq .flow-step__title {
  margin: 8px 0 6px;
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--score);
}
.page-faq .flow-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}
.page-faq .flow-step__time {
  display: inline-block;
  margin-top: 12px;
  padding: 3px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--green);
}

/* 筛选标签 */
.page-faq .chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 20px;
}
.page-faq .chip {
  appearance: none;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--mist);
  transition: color var(--t), border-color var(--t), background var(--t);
}
.page-faq .chip:hover {
  color: var(--score);
  border-color: var(--green);
}
.page-faq .chip.is-active {
  background: var(--green);
  border-color: var(--green);
  color: var(--ink);
  font-weight: 600;
}

/* 问答手风琴 */
.page-faq .qa-list {
  display: grid;
  gap: 10px;
}
.page-faq .qa-item {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--t);
}
.page-faq .qa-item[open] {
  border-color: var(--green);
}
.page-faq .qa-item[open]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--green);
}
.page-faq .qa-q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--score);
  transition: color var(--t);
}
.page-faq .qa-q::-webkit-details-marker {
  display: none;
}
.page-faq .qa-q:hover {
  color: var(--green);
}
.page-faq .qa-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--purple);
}
.page-faq .qa-a {
  padding: 0 20px 18px 46px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}
.page-faq .qa-a p {
  margin: 0;
}

/* 数据来源 */
.page-faq .source-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 20px;
}
.page-faq .source-card {
  padding: 20px;
  background: linear-gradient(160deg, rgba(12, 42, 71, .95), rgba(6, 26, 46, .92));
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: border-color var(--t);
}
.page-faq .source-card:hover {
  border-color: var(--purple);
}
.page-faq .source-card__title {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 17px;
  line-height: 1.4;
  color: var(--score);
}
.page-faq .source-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--mist);
}

/* 筛选与检索 */
.page-faq .filter-guide {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 20px;
}
.page-faq .filter-card {
  padding: 20px;
  border: 1px dashed var(--line);
  border-radius: var(--radius-md);
  background: rgba(12, 42, 71, .42);
}
.page-faq .filter-card__title {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 17px;
  color: var(--green);
}
.page-faq .filter-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--mist);
}
.page-faq .filter-card__more {
  margin-top: 12px !important;
  font-size: 13px !important;
}
.page-faq .filter-card--wide {
  border-style: solid;
  background: linear-gradient(120deg, rgba(255, 106, 26, .10), rgba(123, 91, 255, .12));
}

/* 反馈 */
.page-faq .ticket-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 20px 0 18px;
  padding: 0;
  list-style: none;
}
.page-faq .ticket-card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
}
.page-faq .ticket-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--orange);
}
.page-faq .ticket-card h3 {
  margin: 8px 0 6px;
  font-family: var(--font-heading);
  font-size: 16px;
  color: var(--score);
}
.page-faq .ticket-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--mist);
}
.page-faq .feedback-meter {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0 0 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--line);
}
.page-faq .feedback-meter__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--night);
}
.page-faq .feedback-meter__item .num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--score);
  font-variant-numeric: tabular-nums;
}
.page-faq .feedback-meter__item span:last-child {
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}
.page-faq .feedback-cta-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* 术语 */
.page-faq .term-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: 20px;
}
.page-faq .term-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}
.page-faq .term-card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(12, 42, 71, .55);
  transition: border-color var(--t), transform var(--t);
}
.page-faq .term-card:hover {
  border-color: var(--purple);
  transform: translateY(-2px);
}
.page-faq .term-card__name {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-size: 16px;
  color: var(--score);
}
.page-faq .term-card__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--green);
}
.page-faq .term-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mist);
}
.page-faq .term-figure {
  margin: 0;
}
.page-faq .term-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--faq-line-soft);
  object-fit: cover;
}

/* 底部行动区 */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin-top: clamp(44px, 7vw, 88px);
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(200, 255, 61, .12), rgba(123, 91, 255, .18));
}
.page-faq .faq-cta__text {
  flex: 1 1 260px;
}
.page-faq .faq-cta__title {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.3;
  color: var(--score);
}
.page-faq .faq-cta__text p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}
.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 按钮兜底（共享类之外的尺寸微调） */
.page-faq .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--t), color var(--t), border-color var(--t);
}
.page-faq .btn--primary {
  background: var(--green);
  border: 2px solid var(--green);
  color: var(--ink);
}
.page-faq .btn--primary:hover {
  background: transparent;
  color: var(--green);
}
.page-faq .btn--ghost {
  background: transparent;
  border: 2px solid var(--line);
  color: var(--score);
}
.page-faq .btn--ghost:hover {
  border-color: var(--green);
  color: var(--green);
}

/* 响应式 */
@media (min-width: 620px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .source-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .filter-guide {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .filter-card--wide {
    grid-column: 1 / -1;
  }
  .page-faq .ticket-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .feedback-meter {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .term-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .source-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .ticket-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .feedback-meter {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .term-layout {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-grid {
    grid-template-columns: var(--faq-aside) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
  }
  .page-faq .faq-aside {
    position: sticky;
    top: 92px;
    align-self: start;
    max-height: calc(100vh - 120px);
    overflow: auto;
  }
}

@media (max-width: 519px) {
  .page-faq .qa-a {
    padding-left: 20px;
  }
  .page-faq .faq-cta__actions {
    width: 100%;
  }
  .page-faq .faq-cta__actions .btn {
    flex: 1 1 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .flow-step,
  .page-faq .term-card,
  .page-faq .toc__link,
  .page-faq .chip,
  .page-faq .btn {
    transition: none;
  }
  .page-faq .flow-step:hover,
  .page-faq .term-card:hover {
    transform: none;
  }
}
</main>