/* ===== 知识中心 · 页面专属样式（作用域 .page-faq） ===== */

.page-faq {
  --faq-accent: var(--cyan);
  --faq-line: rgba(232, 236, 244, 0.14);
  --faq-line-soft: rgba(232, 236, 244, 0.08);
  --faq-gap: clamp(40px, 7vw, 92px);
  display: block;
  overflow-x: clip;
  padding-block: clamp(16px, 3vw, 28px) clamp(56px, 9vw, 104px);
}

.page-faq .qa-crumbs {
  margin-bottom: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */

.page-faq .qa-hero {
  position: relative;
  display: grid;
  gap: clamp(26px, 5vw, 48px);
  align-items: center;
  isolation: isolate;
  padding-bottom: clamp(8px, 2.5vw, 22px);
}

.page-faq .qa-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -24%;
  right: -16%;
  width: min(560px, 84vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 32%, rgba(226, 59, 59, 0.30), transparent 58%),
    radial-gradient(circle at 66% 70%, rgba(61, 240, 208, 0.24), transparent 60%);
  filter: blur(8px);
  pointer-events: none;
}

.page-faq .qa-hero__text {
  min-width: 0;
}

.page-faq .qa-eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  color: var(--cyan);
}

.page-faq .qa-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(29px, 6.2vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .qa-lede {
  margin: 0 0 24px;
  max-width: 56ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--mist-72);
}

.page-faq .qa-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .qa-hero__figure,
.page-faq .qa-block__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: var(--ink);
  box-shadow: var(--shadow-card);
}

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

.page-faq .qa-hero__figure img {
  aspect-ratio: 12 / 7;
}

.page-faq .qa-block__figure img {
  aspect-ratio: 5 / 3;
}

.page-faq .qa-hero__figure figcaption,
.page-faq .qa-block__figure figcaption {
  padding: 12px 16px 14px;
  border-top: 1px solid var(--faq-line-soft);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--mist-52);
}

/* ---------- 六步自查 ---------- */

.page-faq .qa-steps {
  margin-top: clamp(46px, 8vw, 96px);
}

.page-faq .qa-steps__title {
  margin: 0 0 10px;
  font-size: clamp(22px, 3.6vw, 36px);
  font-weight: 400;
  line-height: 1.28;
  color: var(--mist);
}

.page-faq .qa-steps__intro {
  margin: 0;
  max-width: 56ch;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--mist-52);
}

.page-faq .qa-steps__list {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .qa-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 16px;
  row-gap: 5px;
  align-items: center;
  height: 100%;
  padding: 18px 18px 20px;
  border: 1px solid var(--faq-line);
  border-top: 2px solid var(--cyan);
  border-radius: var(--radius-md);
  background: linear-gradient(158deg, rgba(18, 27, 54, 0.94), rgba(10, 16, 36, 0.92));
  color: var(--mist);
  text-decoration: none;
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease), box-shadow 0.32s var(--ease);
}

.page-faq .qa-step:hover,
.page-faq .qa-step:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(61, 240, 208, 0.55);
  box-shadow: var(--shadow-float);
}

.page-faq .qa-step__no {
  grid-row: 1 / span 2;
  font-family: var(--font-num);
  font-size: 1.55rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .qa-step__label {
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.page-faq .qa-step__desc {
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--mist-52);
}

/* ---------- 章节框架 ---------- */

.page-faq .qa-block {
  --faq-block-accent: var(--cyan);
  margin-top: var(--faq-gap);
  padding-top: clamp(26px, 4vw, 46px);
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .qa-block--update,
.page-faq .qa-block--rule {
  --faq-block-accent: var(--red);
}

.page-faq .qa-block--pool {
  --faq-block-accent: var(--gold);
}

.page-faq .qa-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-faq .qa-head .section-no {
  font-family: var(--font-num);
  font-size: clamp(18px, 2.6vw, 28px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--faq-block-accent);
}

.page-faq .qa-head .section-title {
  flex: 1 1 260px;
  margin: 0;
  font-size: clamp(21px, 3.4vw, 34px);
  font-weight: 400;
  line-height: 1.26;
  color: var(--mist);
}

.page-faq .qa-block__grid {
  display: grid;
  gap: clamp(22px, 4vw, 38px);
  align-items: start;
}

.page-faq .qa-block__main {
  min-width: 0;
}

.page-faq .qa-block p {
  max-width: 64ch;
  margin: 0 0 14px;
  font-size: 0.95rem;
  line-height: 1.88;
  color: var(--mist-72);
}

.page-faq .qa-block p.qa-block__lede {
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 16.5px);
  line-height: 1.88;
  color: var(--mist-90);
}

/* ---------- 折叠问答 ---------- */

.page-faq .qa-fold {
  margin-top: 6px;
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .qa-fold:first-of-type {
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .qa-fold > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 0.97rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--mist);
  transition: color 0.25s var(--ease);
}

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

.page-faq .qa-fold > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-num);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--faq-block-accent, var(--cyan));
}

.page-faq .qa-fold[open] > summary::after {
  content: "–";
}

.page-faq .qa-fold > summary:hover,
.page-faq .qa-fold > summary:focus-visible {
  color: var(--cyan);
}

.page-faq .qa-fold__body {
  padding: 0 2px 20px;
  max-width: 68ch;
  font-size: 0.92rem;
  line-height: 1.9;
  color: var(--mist-72);
}

.page-faq .qa-fold__body p {
  max-width: none;
  margin: 0 0 12px;
  font-size: 0.92rem;
  line-height: 1.9;
  color: var(--mist-72);
}

.page-faq .qa-fold__body p:last-child {
  margin-bottom: 0;
}

.page-faq .qa-list {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 10px;
}

.page-faq .qa-list li {
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--mist-72);
}

.page-faq .qa-list li::marker {
  font-family: var(--font-num);
  color: var(--cyan);
}

/* ---------- 暖纸说明牌 ---------- */

.page-faq .qa-note {
  margin: clamp(22px, 3.4vw, 32px) 0 0;
  max-width: 660px;
}

.page-faq .qa-note,
.page-faq .qa-note p,
.page-faq .qa-note .qa-note__title {
  color: var(--ink);
}

.page-faq .qa-note__title {
  margin: 0 0 8px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-faq .qa-note p {
  max-width: none;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
}

/* ---------- 速查表 ---------- */

.page-faq .qa-table-hint {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--mist-52);
}

.page-faq .qa-table-wrap {
  margin-top: 14px;
  overflow-x: auto;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  background: rgba(18, 27, 54, 0.72);
  -webkit-overflow-scrolling: touch;
}

.page-faq .qa-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.page-faq .qa-table caption {
  caption-side: top;
  padding: 14px 16px 0;
  text-align: left;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--mist-52);
}

.page-faq .qa-table th {
  padding: 13px 16px;
  text-align: left;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold);
  border-bottom: 1px solid var(--faq-line);
  white-space: nowrap;
}

.page-faq .qa-table td {
  padding: 14px 16px;
  vertical-align: top;
  line-height: 1.75;
  color: var(--mist-72);
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .qa-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .qa-table td:first-child {
  color: var(--mist);
  font-weight: 600;
}

.page-faq .qa-table a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 240, 208, 0.4);
}

.page-faq .qa-table a:hover,
.page-faq .qa-table a:focus-visible {
  color: var(--gold);
  border-bottom-color: rgba(242, 193, 78, 0.5);
}

/* ---------- 底部行动区 ---------- */

.page-faq .qa-cta {
  margin-top: var(--faq-gap);
  padding: clamp(26px, 4vw, 48px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(226, 59, 59, 0.34);
  background:
    radial-gradient(circle at 88% 10%, rgba(226, 59, 59, 0.32), transparent 58%),
    linear-gradient(160deg, rgba(18, 27, 54, 0.96), rgba(10, 16, 36, 0.96));
  box-shadow: var(--shadow-card);
}

.page-faq .qa-cta h2 {
  margin: 0 0 12px;
  font-size: clamp(21px, 3.2vw, 32px);
  font-weight: 400;
  line-height: 1.3;
  color: var(--mist);
}

.page-faq .qa-cta p {
  margin: 0 0 22px;
  max-width: 60ch;
  font-size: 0.95rem;
  line-height: 1.88;
  color: var(--mist-72);
}

.page-faq .qa-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .qa-steps__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 901px) {
  .page-faq .qa-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  }

  .page-faq .qa-block__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-faq .qa-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .qa-block--update .qa-block__grid,
  .page-faq .qa-block--pool .qa-block__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-step,
  .page-faq .qa-fold > summary {
    transition: none;
  }

  .page-faq .qa-step:hover,
  .page-faq .qa-step:focus-visible {
    transform: none;
  }
}