/* ===================== 常见问答 ===================== */
.page-faq {
  --faq-rail-w: 238px;
  --faq-line: rgba(52, 245, 197, 0.42);
}

/* ---------- 页面头 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(6px, 1.6vw, 20px) clamp(30px, 5vw, 54px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -120px;
  width: min(540px, 88vw);
  height: min(540px, 88vw);
  border-radius: 50%;
  background: radial-gradient(circle at 55% 45%, rgba(52, 245, 197, 0.16), transparent 66%);
  z-index: 0;
  pointer-events: none;
}

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

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.6vw, 3.3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.14;
  margin: 14px 0 0;
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--ash);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 44px);
  align-items: start;
}

/* ---------- 左侧问题索引 ---------- */
.page-faq .faq-index {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ash);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 16px;
  border-radius: var(--r-pill);
  border: 1px solid var(--ridge);
  background: var(--panel);
  color: var(--ash);
  font-size: var(--fs-small);
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--cyan);
}

.page-faq .faq-index__note {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--ash);
}

.page-faq .faq-index__note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* ---------- 右侧问答流 ---------- */
.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: clamp(30px, 5vw, 60px);
  min-width: 0;
}

.page-faq .faq-block {
  scroll-margin-top: calc(var(--header-offset) + 18px);
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ridge);
}

.page-faq .faq-block__num {
  grid-row: 1;
  padding-top: 0.45em;
  font-family: var(--font-data);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-faq .faq-block__title {
  grid-row: 1;
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.page-faq .faq-block__lead {
  grid-column: 2;
  margin: 0;
  max-width: 48ch;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--ash);
}

.page-faq .faq-block__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 28px);
  align-items: start;
}

.page-faq .faq-block__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

/* ---------- 图片 ---------- */
.page-faq .faq-block__figure {
  margin: 0;
  border: 1px solid var(--ridge);
  border-radius: var(--r-lg);
  background: var(--panel);
  overflow: hidden;
}

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

.page-faq .faq-block__figure .media-caption {
  padding: 12px 16px 14px;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--ash);
}

.page-faq .faq-block__banner {
  margin: 0 0 18px;
  border: 1px solid var(--ridge);
  border-radius: var(--r-lg);
  background: var(--panel);
  overflow: hidden;
}

.page-faq .faq-block__banner img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
  object-position: center;
}

/* ---------- 栏目归属图 ---------- */
.page-faq .faq-map-scroll {
  margin-bottom: 18px;
  padding: 14px 12px;
  border: 1px solid var(--ridge);
  border-radius: var(--r-lg);
  background: var(--panel);
  overflow-x: auto;
}

.page-faq .faq-map {
  display: block;
  width: 100%;
  min-width: 520px;
  height: auto;
}

.page-faq .faq-map text {
  font-family: var(--font-body);
  font-size: 14px;
}

.page-faq .faq-map__links path {
  fill: none;
  stroke: var(--faq-line);
  stroke-width: 1.5;
}

.page-faq .faq-map__dots circle {
  fill: var(--cyan);
}

.page-faq .faq-map__left text {
  fill: var(--chalk);
}

.page-faq .faq-map__right text {
  fill: var(--cyan-soft);
  text-anchor: end;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--ridge);
  border-radius: var(--r-lg);
  background: var(--panel);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(52, 245, 197, 0.55);
  background: var(--ink-deep);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-body);
  font-weight: 600;
  line-height: 1.55;
  color: var(--chalk);
  transition: color 0.25s var(--ease);
}

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

.page-faq .faq-item > summary:hover {
  color: var(--cyan);
}

.page-faq .faq-item > summary::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-left: auto;
  margin-top: 0.5em;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease);
}

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

.page-faq .faq-item__body {
  padding: 0 18px 16px;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--ash);
}

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

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-item__meta {
  display: inline-block;
  margin: 10px 18px 16px;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  background: rgba(255, 176, 32, 0.1);
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-faq .faq-item[open] .faq-item__meta {
  display: inline-block;
}

/* ---------- 指标卡 ---------- */
.page-faq .faq-stats {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

/* ---------- 最后的提问卡 ---------- */
.page-faq .faq-block--ask .faq-ask {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--ridge);
  border-radius: var(--r-xl);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(156, 140, 255, 0.14), transparent 60%),
    var(--panel);
}

.page-faq .faq-ask__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.3;
  color: var(--chalk);
}

.page-faq .faq-ask__text {
  margin: 10px 0 0;
  max-width: 42ch;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--ash);
}

.page-faq .faq-ask__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-faq .faq-ask__list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ridge);
}

.page-faq .faq-ask__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--ridge);
}

.page-faq .faq-ask__k {
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ash);
}

.page-faq .faq-ask__v {
  font-family: var(--font-data);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  color: var(--cyan-soft);
  word-break: break-all;
  text-align: right;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-block__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }

  .page-faq .faq-ask {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 28px;
  }

  .page-faq .faq-ask__list {
    border-top: none;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-offset) + 20px);
    max-height: calc(100vh - var(--header-offset) - 48px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__link {
    padding: 10px 10px 10px 15px;
    border: none;
    border-left: 3px solid var(--ridge);
    border-radius: 0 var(--r-md) var(--r-md) 0;
    background: transparent;
    white-space: normal;
    line-height: 1.45;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    color: var(--chalk);
    border-left-color: var(--cyan);
    background: rgba(52, 245, 197, 0.07);
  }

  .page-faq .faq-index__note {
    padding-left: 15px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-body {
    gap: clamp(40px, 4vw, 68px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::after {
    transition: none;
  }
}