.page-faq {
  --faq-dot-struct: #4E86B0;
  --faq-dot-play: #2F9E8A;
  --faq-dot-settle: #C08A33;
  --faq-dot-device: #8A6FB0;
  --faq-dot-secure: #B85C6A;
  --faq-rail: 250px;
  display: block;
  padding-bottom: 76px;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding: 18px 0 6px;
}

.page-faq .faq-crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--haze);
}

.page-faq .faq-crumb__item + .faq-crumb__item::before {
  content: "/";
  margin-right: 6px;
  opacity: .5;
}

.page-faq .faq-crumb a {
  color: var(--haze);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 30px;
  padding: 14px 0 46px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 8.4vw, 66px);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-hero .lede {
  max-width: 62ch;
  margin: 0;
  color: rgba(255, 255, 255, .82);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-metric dt {
  margin: 0;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--haze);
}

.page-faq .faq-metric dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--amber);
}

.page-faq .faq-hero__panel {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(160deg, rgba(18, 41, 63, .9), rgba(11, 27, 43, .6));
}

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

/* ---------- 章节通用 ---------- */
.page-faq .faq-section {
  padding: 48px 0 8px;
}

.page-faq .faq-head {
  max-width: 74ch;
  margin-bottom: 26px;
}

.page-faq .faq-head h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 5vw, 38px);
  line-height: 1.16;
  color: var(--white);
}

.page-faq .faq-head .lede {
  margin: 0;
  color: rgba(255, 255, 255, .78);
}

.page-faq .faq-figure {
  margin: 0 0 30px;
}

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

/* ---------- 奶油纸区块 ---------- */
.page-faq .faq-paper {
  margin: 52px 0;
  padding: 32px clamp(16px, 4vw, 44px) 38px;
  background: var(--paper);
  color: var(--paper-ink);
  border: 1px solid rgba(42, 33, 27, .08);
  border-radius: 2px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, .22);
}

.page-faq .faq-paper .faq-head h2 {
  color: var(--paper-ink);
}

.page-faq .faq-paper .faq-head .lede {
  color: rgba(42, 33, 27, .76);
}

.page-faq .faq-paper .eyebrow--ink {
  color: var(--rust);
}

/* ---------- 术语库：索引 + 卡片 ---------- */
.page-faq .faq-lib {
  display: grid;
  gap: 26px;
}

.page-faq .faq-lib__index {
  padding: 16px 14px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(18, 41, 63, .55);
}

.page-faq .faq-lib__index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-faq .faq-index__label {
  margin: 14px 0 6px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--haze);
}

.page-faq .faq-index__label:first-of-type {
  margin-top: 0;
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 7px;
  min-height: 30px;
  padding: 5px 4px;
  font-size: 13px;
  color: rgba(255, 255, 255, .78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__link .num {
  font-size: 11px;
  color: var(--haze);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: rgba(47, 227, 200, .42);
}

.page-faq .faq-lib__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-cat {
  position: relative;
  padding: 14px 14px 14px 34px;
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(18, 41, 63, .72), rgba(11, 27, 43, .55));
  scroll-margin-top: 96px;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-cat::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 19px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--faq-dot, var(--cyan));
}

.page-faq .faq-cat[data-dir="struct"] { --faq-dot: var(--faq-dot-struct); }
.page-faq .faq-cat[data-dir="play"] { --faq-dot: var(--faq-dot-play); }
.page-faq .faq-cat[data-dir="settle"] { --faq-dot: var(--faq-dot-settle); }
.page-faq .faq-cat[data-dir="device"] { --faq-dot: var(--faq-dot-device); }
.page-faq .faq-cat[data-dir="secure"] { --faq-dot: var(--faq-dot-secure); }

.page-faq .faq-cat:hover {
  border-color: rgba(47, 227, 200, .34);
}

.page-faq .faq-cat__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--haze);
}

.page-faq .faq-cat__name {
  margin: 4px 0 6px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-cat__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
}

.page-faq .faq-cat__desc {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .68);
}

/* ---------- 高频术语 ---------- */
.page-faq .faq-terms {
  display: grid;
  gap: 10px;
}

.page-faq .faq-term {
  border: 1px solid rgba(42, 33, 27, .14);
  border-radius: 2px;
  background: rgba(255, 255, 255, .56);
}

.page-faq .faq-term__summary {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 12px 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-term__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--rust);
}

.page-faq .faq-term[open] .faq-term__summary::after {
  content: "−";
}

.page-faq .faq-term__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--rust);
}

.page-faq .faq-term__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--paper-ink);
}

.page-faq .faq-paper .faq-term__tag {
  background: rgba(217, 85, 47, .12);
  color: #A63F1D;
  border: 1px solid rgba(217, 85, 47, .24);
}

.page-faq .faq-term__body {
  margin: 0;
  padding: 0 16px 16px 42px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(42, 33, 27, .78);
}

/* ---------- 四步流程 ---------- */
.page-faq .faq-flow {
  position: relative;
  margin-top: 6px;
}

.page-faq .faq-flow__wire {
  display: none;
  width: 100%;
  height: 40px;
  margin-bottom: 2px;
}

.page-faq .faq-flow__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-flow__step {
  padding: 18px 16px 18px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: 2px;
  background: linear-gradient(150deg, rgba(18, 41, 63, .85), rgba(11, 27, 43, .6));
}

.page-faq .faq-flow__step h3 {
  margin: 8px 0 8px;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-flow__step p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .72);
}

.page-faq .faq-flow__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--amber);
}

/* ---------- 对局记录三段轨道 ---------- */
.page-faq .faq-track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-track__item {
  padding: 18px 16px 16px;
  border-top: 2px solid var(--paper-ink);
  background: rgba(255, 255, 255, .5);
}

.page-faq .faq-track__step {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--rust);
}

.page-faq .faq-track__title {
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper-ink);
}

.page-faq .faq-track__item p {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(42, 33, 27, .78);
}

.page-faq .faq-track__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(42, 33, 27, .58);
}

.page-faq .faq-track__meta .num {
  color: #8A5B12;
  font-weight: 700;
}

/* ---------- 结算问答 ---------- */
.page-faq .faq-qa {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-qa__item {
  padding: 18px 18px 16px;
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  background: rgba(18, 41, 63, .5);
}

.page-faq .faq-qa__q {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-qa__q .num {
  font-size: 12px;
  color: var(--amber);
}

.page-faq .faq-qa__a {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(255, 255, 255, .74);
}

/* ---------- 常见疑问速查 ---------- */
.page-faq .faq-quick {
  border-top: 1px solid rgba(42, 33, 27, .16);
}

.page-faq .faq-quick__item {
  border-bottom: 1px solid rgba(42, 33, 27, .16);
}

.page-faq .faq-quick__item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 12px 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper-ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-quick__item summary::before {
  content: "?";
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border: 1px solid rgba(217, 85, 47, .42);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--rust);
}

.page-faq .faq-quick__item[open] summary::before {
  background: var(--rust);
  color: var(--paper);
}

.page-faq .faq-quick__item p {
  margin: 0;
  padding: 0 4px 16px 38px;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(42, 33, 27, .78);
}

/* ---------- 末尾入口 ---------- */
.page-faq .faq-cta {
  margin-top: 56px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-cta h2 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 4vw, 32px);
  color: var(--white);
}

.page-faq .faq-cta__links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-cta__card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 44px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 2px;
  text-decoration: none;
  background: linear-gradient(160deg, rgba(18, 41, 63, .8), rgba(11, 27, 43, .5));
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-cta__card:hover,
.page-faq .faq-cta__card:focus-visible {
  border-color: rgba(47, 227, 200, .5);
  transform: translateY(-2px);
}

.page-faq .faq-cta__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .faq-cta__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-cta__arrow {
  margin-top: auto;
  font-family: var(--font-mono);
  color: var(--amber);
}

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

@media (min-width: 760px) {
  .page-faq .faq-terms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-cta__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-qa {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-qa__item:last-child {
    grid-column: 1 / -1;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(230px, .8fr);
    align-items: end;
    gap: 48px;
    padding: 26px 0 62px;
  }

  .page-faq .faq-flow__wire {
    display: block;
  }

  .page-faq .faq-flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .faq-track__item {
    padding: 22px 18px 18px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-lib {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }

  .page-faq .faq-lib__index {
    position: sticky;
    top: 84px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-lib__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-cta__links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-index__link,
  .page-faq .faq-cta__card,
  .page-faq .faq-crumb a {
    transition: none;
  }

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