/* ============================================================
   牌局问答 /knowledge/  —— 页面作用域 .page-faq
   ============================================================ */

.page-faq {
  --faq-cut: 18px;
  --faq-ask-size: clamp(0.98rem, 2.3vw, 1.12rem);
}

/* ---------- 页头补充 ---------- */
.page-faq .nn-page-head {
  padding-bottom: clamp(2.6rem, 7vw, 4.6rem);
}

.page-faq .nn-page-head .nn-lede {
  max-width: 62ch;
}

/* ---------- 深色语境（热门问答） ---------- */
.page-faq .faq-hot {
  --faq-ink: var(--nn-paper);
  --faq-ink-soft: rgba(245, 240, 230, 0.74);
  --faq-panel: rgba(245, 240, 230, 0.05);
  --faq-panel-open: rgba(245, 240, 230, 0.085);
  --faq-line: var(--nn-hairline);
  --faq-num: var(--nn-red-bright);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hot::before {
  content: "";
  position: absolute;
  inset: auto -12% -60% auto;
  width: min(560px, 70vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(176, 141, 87, 0.16), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hot__head {
  display: grid;
  gap: 0.55rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.4rem);
}

.page-faq .faq-hot__list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

/* ---------- 浅色语境（分类区） ---------- */
.page-faq .faq-band {
  --faq-ink: var(--nn-ink);
  --faq-ink-soft: rgba(28, 28, 28, 0.74);
  --faq-panel: rgba(11, 59, 46, 0.045);
  --faq-panel-open: rgba(11, 59, 46, 0.075);
  --faq-line: rgba(11, 59, 46, 0.18);
  --faq-num: var(--nn-red);
}

.page-faq .faq-band__head {
  display: grid;
  gap: 0.55rem;
  margin-bottom: clamp(1.2rem, 3vw, 1.8rem);
}

.page-faq .faq-filterbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: clamp(1.8rem, 5vw, 3rem);
}

.page-faq .faq-filterbar .nn-chip {
  border-radius: 999px;
  border: 1px solid var(--faq-line);
  color: var(--faq-ink-soft);
  transition: color 0.25s var(--nn-ease), border-color 0.25s var(--nn-ease), background-color 0.25s var(--nn-ease);
}

.page-faq .faq-filterbar .nn-chip[aria-pressed="true"] {
  color: var(--nn-paper);
  background: var(--nn-green);
  border-color: var(--nn-green);
}

/* ---------- 折叠问答卡 · 基础 ---------- */
.page-faq .faq-q {
  position: relative;
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  transition: background-color 0.3s var(--nn-ease), border-color 0.3s var(--nn-ease), box-shadow 0.3s var(--nn-ease);
}

.page-faq .faq-q:hover {
  border-color: var(--nn-gold);
}

.page-faq .faq-q[open] {
  background: var(--faq-panel-open);
  box-shadow: inset 3px 0 0 0 var(--nn-gold);
}

.page-faq .faq-q__summary {
  display: grid;
  grid-template-columns: 2.1ch minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.85rem;
  padding: 0.95rem 1.15rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--nn-font-display);
  font-size: var(--faq-ask-size);
  line-height: 1.5;
  color: var(--faq-ink);
  overflow-wrap: anywhere;
}

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

.page-faq .faq-q__summary:focus-visible {
  outline: 2px solid var(--nn-gold);
  outline-offset: -2px;
}

.page-faq .faq-q__num {
  font-family: var(--nn-font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--faq-num);
  line-height: 1;
}

.page-faq .faq-q__sign {
  position: relative;
  justify-self: end;
  width: 20px;
  height: 20px;
  border: 1px solid var(--faq-line);
  border-radius: 50%;
  flex: none;
  transition: border-color 0.3s var(--nn-ease);
}

.page-faq .faq-q[open] .faq-q__sign {
  border-color: var(--nn-gold);
}

.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--faq-ink);
}

.page-faq .faq-q__sign::before {
  width: 9px;
  height: 1px;
}

.page-faq .faq-q__sign::after {
  width: 1px;
  height: 9px;
  transition: opacity 0.3s var(--nn-ease);
}

.page-faq .faq-q[open] .faq-q__sign::after {
  opacity: 0;
}

.page-faq .faq-q__body {
  padding: 0 1.15rem 1.15rem 1.15rem;
  color: var(--faq-ink-soft);
  font-size: 0.94rem;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

.page-faq .faq-q__body > p {
  margin: 0 0 0.5rem;
}

.page-faq .faq-q__body > p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-steps {
  margin: 0.55rem 0 0.6rem;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.3rem;
  list-style: decimal;
}

.page-faq .faq-steps li {
  padding-left: 0.15rem;
}

/* 大屏展开内容与问题文字左对齐 */
@media (min-width: 640px) {
  .page-faq .faq-q__body {
    padding-left: calc(1.15rem + 2.1ch + 0.85rem);
  }
}

/* ---------- 分类区块 ---------- */
.page-faq .faq-cats {
  display: flex;
  flex-direction: column;
  gap: clamp(2.2rem, 6vw, 4rem);
}

.page-faq .faq-cat {
  padding-top: clamp(1.6rem, 4vw, 2.6rem);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-cat:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-cat__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.2rem, 4vw, 2rem);
}

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

.page-faq .faq-cat__num {
  display: block;
  font-family: var(--nn-font-display);
  font-size: clamp(2.8rem, 9vw, 4.6rem);
  font-weight: 300;
  line-height: 0.9;
  color: var(--faq-num);
  opacity: 0.88;
}

.page-faq .faq-cat__title {
  margin: 0.5rem 0 0.6rem;
  color: var(--faq-ink);
}

.page-faq .faq-cat__desc {
  margin: 0;
  max-width: 34ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-cat__figure {
  margin: 1.2rem 0 0;
}

.page-faq .faq-cat__figure .nn-media__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-cat__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
}

@media (min-width: 900px) {
  .page-faq .faq-cat__grid {
    grid-template-columns: minmax(0, 0.6fr) minmax(0, 1.4fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .faq-cat__aside {
    position: sticky;
    top: calc(var(--nn-header-h) + 1.5rem);
    align-self: start;
  }
}

/* ---------- 空结果提示 ---------- */
.page-faq .faq-empty {
  margin: 2rem 0 0;
  padding: 1.4rem 1.25rem;
  border: 1px dashed var(--faq-line);
  color: var(--faq-ink-soft);
  font-size: 0.94rem;
}

.page-faq .faq-empty[hidden] {
  display: none;
}

/* ---------- 页尾辅助两栏 ---------- */
.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 5vw, 3rem);
}

.page-faq .faq-help__col {
  padding: clamp(1.2rem, 3.5vw, 2rem) 0 0;
  border-top: 1px solid var(--nn-hairline);
}

.page-faq .faq-help__col h2 {
  margin: 0.5rem 0 0.7rem;
}

.page-faq .faq-help__col p {
  margin: 0 0 0.7rem;
  max-width: 46ch;
  line-height: 1.9;
  color: var(--nn-dark-ink);
  font-size: 0.95rem;
}

.page-faq .faq-help__actions {
  margin-top: 1.2rem;
}

.page-faq .faq-help__aside {
  font-size: 0.86rem !important;
  color: var(--nn-gold-mute) !important;
}

.page-faq .faq-help .nn-link {
  color: var(--nn-gold-soft);
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

@media (min-width: 780px) {
  .page-faq .faq-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 400px) {
  .page-faq .faq-q__summary {
    grid-template-columns: 1.8ch minmax(0, 1fr) auto;
    gap: 0.55rem;
    padding: 0.85rem 0.9rem;
  }

  .page-faq .faq-q__body {
    padding: 0 0.9rem 1rem 0.9rem;
  }
}
</PAGE_CSS>>>