/* ===== 问题解答页 / page-faq ===== */

.page-faq {
  --faq-num-col: 44px;
  background: var(--ink-900);
  color: var(--text-primary);
}

.page-faq .faq-crumb {
  padding-block: 18px 12px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-intro {
  margin-top: 6px;
  background: var(--ink-800);
  border-bottom: 1px solid var(--line-600);
}

.page-faq .faq-intro__inner {
  display: grid;
  gap: 26px;
  padding-block: 30px 26px;
}

@media (min-width: 900px) {
  .page-faq .faq-intro__inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: end;
    gap: 52px;
    padding-block: 52px 40px;
  }
}

.page-faq .faq-intro__lead {
  display: grid;
  gap: 14px;
}

.page-faq .faq-title {
  margin: 0;
  font-size: 32px;
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  max-width: 20ch;
}

@media (min-width: 700px) {
  .page-faq .faq-title {
    font-size: 46px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-title {
    font-size: 56px;
  }
}

.page-faq .faq-intro__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 46ch;
}

/* 记分牌式统计 */
.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-600);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-faq .faq-stat {
  background: var(--panel-700);
  padding: 14px 16px;
}

.page-faq .faq-stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--amber-gold);
}

.page-faq .faq-stat--blue .faq-stat__value {
  color: var(--neon-blue);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

/* 章节胶囊 */
.page-faq .faq-cats {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 22px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-cats__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border-radius: var(--pill);
  background: var(--panel-700);
  border: 1px solid var(--line-600);
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.2;
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-cats__link:hover {
  background: var(--panel-600);
  transform: translateY(-2px);
}

.page-faq .faq-cats__link:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.page-faq .faq-cats__link--p {
  border-color: rgba(139, 92, 246, 0.5);
}

.page-faq .faq-cats__link--r {
  border-color: rgba(255, 92, 122, 0.45);
}

.page-faq .faq-cats__link--g {
  border-color: rgba(255, 176, 32, 0.45);
}

.page-faq .faq-cats__link--b {
  border-color: rgba(45, 226, 255, 0.4);
}

.page-faq .faq-cats__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--neon-purple-soft);
}

/* ---------- 主体栅格 ---------- */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding-block: 6px 72px;
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 206px minmax(0, 1fr);
    gap: 56px;
    padding-block: 26px 104px;
  }
}

.page-faq .faq-content {
  min-width: 0;
}

/* ---------- 左侧常驻章节索引 ---------- */

.page-faq .faq-index {
  display: none;
}

@media (min-width: 1024px) {
  .page-faq .faq-index {
    display: block;
    position: sticky;
    top: 108px;
    align-self: start;
  }
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  padding-left: 12px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

.page-faq .faq-index__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid var(--line-600);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted);
  font-size: 13.5px;
  line-height: 1.45;
  text-decoration: none;
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-index__link:hover {
  color: var(--text-primary);
  background: var(--panel-700);
}

.page-faq .faq-index__link:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.page-faq .faq-index__link[data-active="true"] {
  color: var(--text-primary);
  background: var(--panel-700);
  border-left-color: var(--neon-purple);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--neon-purple);
}

/* ---------- 章节 ---------- */

.page-faq .faq-chapter {
  scroll-margin-top: 104px;
  padding-block: 26px 4px;
}

.page-faq .faq-chapter + .faq-chapter {
  margin-top: 14px;
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  margin-bottom: 18px;
}

.page-faq .faq-head__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--neon-purple);
}

.page-faq .faq-head__title {
  margin: 0;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

@media (min-width: 700px) {
  .page-faq .faq-head__title {
    font-size: 28px;
  }
}

/* ---------- 图文块 ---------- */

.page-faq .faq-figure {
  margin: 0 0 20px;
}

.page-faq .faq-diagram-wrap {
  margin: 6px 0 18px;
  padding: 14px 16px 10px;
  background: var(--ink-800);
  border-radius: var(--radius-md);
  border: 1px solid var(--line-600);
}

.page-faq .faq-diagram {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-diagram__bid rect {
  fill: var(--amber-gold);
}

.page-faq .faq-diagram__round rect {
  fill: var(--neon-purple);
}

.page-faq .faq-diagram__label {
  fill: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-item {
  margin: 0 0 8px;
  background: var(--panel-700);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: background 0.18s ease;
}

.page-faq .faq-item:hover {
  background: var(--panel-600);
}

.page-faq .faq-item[open] {
  background: var(--panel-600);
  box-shadow: var(--shadow-block);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: var(--faq-num-col) minmax(0, 1fr) 20px;
  gap: 10px;
  align-items: start;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: var(--radius-md);
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--neon-purple-soft);
}

.page-faq .faq-item__q {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text-primary);
}

@media (min-width: 700px) {
  .page-faq .faq-item__q {
    font-size: 17px;
  }
}

.page-faq .faq-item__mark {
  position: relative;
  justify-self: end;
  width: 16px;
  height: 16px;
  margin-top: 6px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--neon-blue);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .faq-item__mark::after {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: rotate(0deg);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 16px 18px;
}

@media (min-width: 700px) {
  .page-faq .faq-item__body {
    padding: 0 24px 20px calc(16px + var(--faq-num-col) + 10px);
  }
}

/* 答案短列表 */
.page-faq .faq-steps {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps > li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-muted);
}

.page-faq .faq-steps > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.64em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--neon-blue);
}

.page-faq .faq-steps a {
  color: var(--neon-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-steps a:hover {
  color: var(--neon-purple-soft);
}

.page-faq .faq-steps a:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: 4px;
}

/* 十二档分值表 */
.page-faq .faq-scale {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
  background: var(--line-600);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

@media (min-width: 700px) {
  .page-faq .faq-scale {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

.page-faq .faq-scale > li {
  display: grid;
  gap: 3px;
  padding: 8px 10px;
  background: var(--ink-800);
}

.page-faq .faq-scale__level {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--text-muted);
}

.page-faq .faq-scale__score {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: -0.02em;
  color: var(--amber-gold);
}

/* ---------- 结尾分流块 ---------- */

.page-faq .faq-chapter--outro {
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-outro {
  display: grid;
  gap: 16px;
  padding: 24px 20px;
  background: var(--panel-700);
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
}

@media (min-width: 700px) {
  .page-faq .faq-outro {
    padding: 32px 30px;
  }
}

.page-faq .faq-outro__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-muted);
  max-width: 64ch;
}

.page-faq .faq-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}