/* ===== 规则知识库（/knowledge/）页面专属样式 ===== */
.page-faq {
  --faq-gap: clamp(16px, 2.4vw, 28px);
  --faq-pad: clamp(18px, 2.6vw, 28px);
  --faq-answer-indent: 40px;
  background: var(--deep);
  color: var(--ice);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(44px, 8vw, 104px)) 0 clamp(38px, 5.5vw, 70px);
  background:
    radial-gradient(880px 460px at 84% -12%, rgba(255, 107, 26, 0.18), transparent 62%),
    radial-gradient(640px 420px at 6% 8%, rgba(46, 196, 182, 0.10), transparent 66%),
    linear-gradient(180deg, var(--deep) 0%, var(--deep-2) 100%);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(28, 93, 122, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 93, 122, 0.22) 1px, transparent 1px);
  background-size: 84px 84px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 76%);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
}

.page-faq .faq-hero__lead h1 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(32px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-hero__accent {
  color: var(--accent);
  display: block;
}

.page-faq .faq-hero__intro {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--steel);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  border-top: 1px solid var(--line-faint);
  padding-top: clamp(16px, 2vw, 22px);
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--steel);
}

.page-faq .faq-hero__meta b {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--caution);
  letter-spacing: 0.02em;
}

/* 首屏右侧速览面板 */
.page-faq .faq-hero__panel {
  position: relative;
  align-self: start;
  padding: var(--faq-pad);
  background: rgba(11, 46, 74, 0.72);
  border: 1px solid var(--line);
}

.page-faq .faq-hero__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 72px;
  height: 3px;
  background: var(--accent);
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pitch);
}

.page-faq .faq-stats {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-stats__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--line-faint);
}

.page-faq .faq-stats__row:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-stats dt {
  font-size: 14px;
  color: var(--steel);
}

.page-faq .faq-stats dd {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--ice);
  letter-spacing: 0.01em;
}

/* ---------- 正文区 ---------- */
.page-faq .faq-body {
  padding: clamp(40px, 6vw, 76px) 0 clamp(52px, 8vw, 96px);
  background: var(--deep);
}

.page-faq .faq-control {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding-bottom: 18px;
  margin-bottom: clamp(24px, 3.4vw, 40px);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-control__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
  white-space: nowrap;
}

.page-faq .faq-control .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.6vw, 48px);
}

/* 左侧主题索引 */
.page-faq .faq-index {
  padding: 16px 18px;
  border: 1px solid var(--line-faint);
  background: rgba(8, 36, 58, 0.6);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

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

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 8px;
  color: var(--ice);
  text-decoration: none;
  font-size: 15px;
  border-left: 2px solid transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-index__list a .data-num {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--accent-soft);
  border-left-color: var(--accent);
  color: var(--white);
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-faint);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--steel);
}

/* 问题区块 */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-block {
  padding-top: clamp(24px, 3.4vw, 38px);
  border-top: 1px solid var(--line-faint);
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(40px, 5.5vw, 76px);
}

.page-faq .faq-block__head h2 {
  margin: 8px 0 12px;
  font-family: var(--font-head);
  font-size: clamp(23px, 3.2vw, 36px);
  line-height: 1.22;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.005em;
}

.page-faq .faq-block__lede {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.8;
  color: var(--steel);
}

.page-faq .faq-block__lede a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 图 */
.page-faq .faq-figure {
  margin: clamp(20px, 3vw, 30px) 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: 11px 16px;
  border-top: 1px solid var(--line-faint);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

/* 折叠问答 */
.page-faq .faq-list {
  margin-top: clamp(20px, 3vw, 28px);
  border-top: 1px solid var(--line-faint);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-faint);
  transition: background 0.25s var(--ease);
}

.page-faq .faq-item[open] {
  background: rgba(11, 46, 74, 0.55);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) 20px;
  align-items: start;
  gap: 12px;
  padding: clamp(15px, 2vw, 21px) 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: clamp(15.5px, 1.5vw, 18px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ice);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item > summary::before {
  content: attr(data-index);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--accent);
  padding-top: 5px;
  letter-spacing: 0.06em;
}

.page-faq .faq-item > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--steel);
  padding-top: 3px;
  text-align: right;
  transition: color 0.2s var(--ease), transform 0.25s var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
  color: var(--accent);
  transform: rotate(180deg);
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.page-faq .faq-item__a {
  padding: 0 8px clamp(18px, 2.4vw, 24px) 42px;
  font-size: clamp(14.5px, 1.4vw, 16px);
  line-height: 1.85;
  color: var(--steel);
  max-width: 70ch;
}

.page-faq .faq-item__a a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  word-break: break-word;
}

.page-faq .faq-item__a a:hover {
  color: var(--caution);
}

/* ---------- 底部引导 ---------- */
.page-faq .faq-cta {
  padding: 0 0 clamp(48px, 7vw, 88px);
  background: var(--deep);
}

.page-faq .faq-cta__box {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: center;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(255, 107, 26, 0.12) 0%, rgba(11, 46, 74, 0.9) 55%),
    var(--panel);
  position: relative;
}

.page-faq .faq-cta__box::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 96px;
  height: 3px;
  background: var(--pitch);
}

.page-faq .faq-cta__text h2 {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 2.8vw, 30px);
  line-height: 1.25;
  font-weight: 700;
  color: var(--white);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__meta {
    gap: 12px 42px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-faq .faq-hero__panel {
    align-self: end;
  }

  .page-faq .faq-cta__box {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-faq .faq-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-index__list a {
    transition: none;
  }
}
</end_of_artifact>