.page-faq {
  --faq-anchor: 236px;
  --faq-body-text: #2a3947;
}

/* 首屏 */
.page-faq .faq-hero {
  background: linear-gradient(180deg, var(--paper-50) 0%, rgba(200, 247, 238, 0.35) 100%);
  border-bottom: 1px solid var(--hairline-light);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: var(--space-2);
}

.page-faq .faq-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(27px, 6.6vw, 46px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  max-width: 22ch;
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--faq-body-text);
}

.page-faq .faq-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: var(--space-2) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-meta__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--hairline-light);
  font-size: 13px;
  color: var(--abyss-700);
}

.page-faq .faq-meta__item::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal-500);
  flex: 0 0 auto;
}

.page-faq .faq-meta__num {
  font-family: var(--font-num);
  font-size: 19px;
  font-weight: 700;
  color: var(--abyss-900);
  font-variant-numeric: tabular-nums;
}

/* 双栏骨架 */
.page-faq .faq-layout {
  display: block;
}

.page-faq .faq-toc {
  margin-bottom: var(--space-3);
}

.page-faq .faq-toc__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--chart-600);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--hairline-light);
  color: var(--abyss-900);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.22s var(--ease-out), border-color 0.22s var(--ease-out);
}

.page-faq .faq-toc__link:hover {
  border-color: var(--signal-500);
  background: var(--signal-100);
}

.page-faq .faq-toc__link:focus-visible {
  outline: 3px solid var(--signal-500);
  outline-offset: 2px;
}

.page-faq .faq-toc__idx {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--chart-600);
}

/* 章节 */
.page-faq .faq-block {
  padding: var(--space-4) 0;
  border-top: 1px solid var(--hairline-light);
  scroll-margin-top: calc(var(--header-h-compact) + 20px);
}

.page-faq .faq-main > .faq-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .section-title {
  margin: 6px 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 4.6vw, 32px);
  line-height: 1.3;
  color: var(--ink-900);
}

.page-faq .section-lead {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--faq-body-text);
}

/* 入口清单 */
.page-faq .entry-list {
  display: grid;
  gap: 14px;
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .entry-item {
  position: relative;
  padding: 18px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--hairline-light);
  box-shadow: var(--shadow-soft);
}

.page-faq .entry-item__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--abyss-900);
  color: var(--signal-500);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.page-faq .entry-item__name {
  margin: 10px 0 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink-900);
}

.page-faq .entry-item__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .intent-box {
  margin-top: var(--space-3);
  padding: 22px 20px;
  border-radius: var(--radius-lg);
  background: var(--abyss-900);
  color: var(--paper-50);
}

.page-faq .intent-box__title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--paper-50);
}

.page-faq .intent-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .intent-row {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(200, 247, 238, 0.08);
  border: 1px solid var(--hairline-dark);
}

.page-faq .intent-row__scene {
  font-size: 14.5px;
  color: var(--chart-300);
}

.page-faq .intent-row__arrow {
  color: var(--signal-500);
  font-family: var(--font-num);
  font-size: 15px;
}

.page-faq .intent-row__target {
  font-size: 16px;
  font-weight: 600;
  color: var(--signal-500);
}

.page-faq .intent-row__next {
  font-size: 13.5px;
  color: rgba(247, 249, 251, 0.72);
}

/* 路径图 */
.page-faq .faq-flow {
  display: block;
  width: 100%;
  height: auto;
  margin: var(--space-3) 0 0;
  padding: 12px;
  border-radius: var(--radius-lg);
  background: rgba(185, 199, 212, 0.18);
  box-sizing: border-box;
}

.page-faq .faq-flow__line {
  stroke: var(--chart-300);
  stroke-width: 2;
  stroke-dasharray: 6 8;
}

.page-faq .faq-flow__node circle {
  fill: var(--abyss-900);
  stroke: var(--signal-500);
  stroke-width: 3;
}

.page-faq .faq-flow__node--end circle {
  fill: var(--abyss-700);
  stroke: var(--sunset-500);
}

.page-faq .faq-flow__step {
  text-anchor: middle;
  font-family: var(--font-num);
  font-size: 15px;
  letter-spacing: 0.06em;
  fill: var(--chart-600);
}

.page-faq .faq-flow__label {
  text-anchor: middle;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 600;
  fill: var(--ink-900);
}

/* 三步卡片 */
.page-faq .step-list {
  display: grid;
  gap: 14px;
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.page-faq .step-item {
  position: relative;
  padding: 20px 18px 20px 22px;
  border-radius: var(--radius-md);
  background: var(--paper-50);
  border: 1px solid var(--hairline-light);
}

.page-faq .step-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--signal-500);
}

.page-faq .step-item__num {
  display: block;
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  color: var(--abyss-700);
  font-variant-numeric: tabular-nums;
}

.page-faq .step-item__title {
  margin: 6px 0 6px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink-900);
}

.page-faq .step-item__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-body-text);
}

/* 图片 */
.page-faq .faq-figure {
  margin: var(--space-3) 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.page-faq .faq-figure .media-frame__caption {
  font-size: 13px;
  line-height: 1.7;
  color: var(--chart-600);
}

/* 问答手风琴 */
.page-faq .qa-list {
  display: grid;
  gap: 12px;
  margin: var(--space-3) 0 0;
}

.page-faq .qa-item {
  position: relative;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--hairline-light);
  overflow: hidden;
}

.page-faq .qa-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background-color 0.22s var(--ease-out);
}

.page-faq .qa-item:not([data-collapsed])::before {
  background: var(--sunset-500);
}

.page-faq .qa-item__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 16px 18px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: var(--ink-900);
}

.page-faq .qa-item__head:focus-visible {
  outline: 3px solid var(--signal-500);
  outline-offset: -3px;
}

.page-faq .fold__dot {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--chart-300);
  transition: background-color 0.22s var(--ease-out);
}

.page-faq .qa-item:not([data-collapsed]) .fold__dot {
  background: var(--sunset-500);
}

.page-faq .qa-item__q {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
}

.page-faq .qa-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin: 7px 0 0 auto;
}

.page-faq .qa-item__sign::before,
.page-faq .qa-item__sign::after {
  content: "";
  position: absolute;
  background: var(--chart-600);
}

.page-faq .qa-item__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa-item__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform 0.22s var(--ease-out);
}

.page-faq .qa-item:not([data-collapsed]) .qa-item__sign::after {
  transform: scaleY(0);
}

.page-faq .qa-item[data-collapsed] .fold__body {
  display: none;
}

.page-faq .fold__inner {
  padding: 0 18px 18px 39px;
}

.page-faq .qa-path {
  display: inline-block;
  margin: 0 0 12px;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  background: var(--signal-100);
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--abyss-700);
}

.page-faq .qa-answer {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body-text);
}

/* 对比章节布局 */
.page-faq .faq-two-col {
  display: block;
}

/* 深色数字带 */
.page-faq .faq-band {
  position: relative;
  margin: var(--space-4) 0;
  padding: 28px 22px;
  border-radius: var(--radius-xl);
  background: var(--abyss-900);
  color: var(--paper-50);
  overflow: hidden;
}

.page-faq .faq-band::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -80px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(35, 224, 196, 0.3), rgba(35, 224, 196, 0) 70%);
  pointer-events: none;
}

.page-faq .faq-band__title {
  position: relative;
  margin: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--paper-50);
}

.page-faq .faq-band__stats {
  position: relative;
  display: grid;
  gap: 18px;
  margin-top: 20px;
}

.page-faq .faq-band .stat__value {
  display: block;
  font-family: var(--font-num);
  font-size: 38px;
  font-weight: 700;
  line-height: 1.05;
  color: var(--paper-50);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-band .stat--signal .stat__value {
  color: var(--signal-500);
}

.page-faq .faq-band .stat--sunset .stat__value {
  color: var(--sunset-500);
}

.page-faq .faq-band .stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--chart-300);
}

/* 标签胶囊 */
.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tags .tag {
  font-size: 13px;
}

/* 结尾去向 */
.page-faq .faq-next {
  margin-top: var(--space-4);
  padding: 26px 22px;
  border-radius: var(--radius-lg);
  background: var(--abyss-700);
  color: var(--paper-50);
}

.page-faq .faq-next__title {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--paper-50);
}

.page-faq .faq-next__list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* 中等宽度：卡片两列 */
@media (min-width: 700px) {
  .page-faq .entry-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .intent-row {
    grid-template-columns: 1.2fr auto 0.8fr 1.4fr;
    align-items: center;
    gap: 14px;
  }

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

  .page-faq .faq-band__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* 桌面：锚点目录吸附 */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: var(--faq-anchor) minmax(0, 1fr);
    gap: var(--space-5);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h-compact) + 24px);
    margin-bottom: 0;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__link {
    width: 100%;
    box-sizing: border-box;
    border-radius: var(--radius-sm);
    border-color: transparent;
    background: transparent;
    padding: 10px 12px;
  }

  .page-faq .faq-toc__link::before {
    content: "";
    flex: 0 0 auto;
    width: 3px;
    height: 16px;
    border-radius: 2px;
    background: var(--chart-300);
    transition: background-color 0.22s var(--ease-out);
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    background: rgba(200, 247, 238, 0.5);
    border-color: transparent;
  }

  .page-faq .faq-toc__link:hover::before,
  .page-faq .faq-toc__link:focus-visible::before {
    background: var(--signal-500);
  }

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

  .page-faq .intent-box {
    padding: 26px 24px;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-two-col {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
  }

  .page-faq .faq-two-col .qa-list {
    margin-top: var(--space-3);
  }

  .page-faq .faq-two-col .faq-figure {
    margin-top: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
</main>