.page-faq {
  --faq-rule: rgba(245, 247, 250, 0.10);
  --faq-rule-strong: rgba(245, 247, 250, 0.20);
  --faq-copy: rgba(230, 233, 240, 0.76);
  --faq-index-w: 268px;
  --faq-top: 108px;
  color: var(--rb-paper);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding: clamp(92px, 13vw, 148px) 0 0;
}

.page-faq .faq-crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--rb-font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--rb-steel);
}

.page-faq .faq-crumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-crumb li + li::before {
  content: "/";
  color: rgba(107, 114, 128, 0.7);
}

.page-faq .faq-crumb a {
  color: var(--rb-blue-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.24s var(--rb-ease), border-color 0.24s var(--rb-ease);
}

.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--rb-paper);
  border-bottom-color: var(--rb-red);
}

.page-faq .faq-crumb [aria-current="page"] {
  color: var(--rb-paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero__inner {
  padding-top: clamp(26px, 4.5vw, 52px);
  max-width: 1040px;
}

.page-faq .faq-hero__title {
  margin: 18px 0 0;
  font-size: clamp(32px, 6.2vw, 74px);
  line-height: 1.06;
  letter-spacing: -0.025em;
  font-weight: 900;
  max-width: 18ch;
  text-wrap: balance;
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--rb-red);
  position: relative;
}

.page-faq .faq-hero__title em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.04em;
  height: 2px;
  background: linear-gradient(90deg, var(--rb-red), var(--rb-blue));
  opacity: 0.6;
}

.page-faq .faq-hero__lead {
  margin-top: clamp(18px, 2.6vw, 30px);
  max-width: 58ch;
  color: var(--faq-copy);
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.8;
}

.page-faq .faq-hero__figure {
  margin: clamp(30px, 5vw, 58px) 0 0;
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule);
  background: var(--rb-carbon);
  overflow: hidden;
}

.page-faq .faq-hero__figure .rb-figure__img {
  display: block;
  line-height: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 340px;
  object-fit: cover;
  opacity: 0.92;
}

/* ---------- 数据横条 ---------- */
.page-faq .faq-stats {
  background: linear-gradient(90deg, rgba(255, 45, 85, 0.07), rgba(30, 94, 255, 0.07));
  border-bottom: 1px solid var(--faq-rule);
}

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

.page-faq .faq-stats__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px clamp(12px, 2vw, 22px);
  background: var(--rb-carbon);
}

.page-faq .faq-stats__num {
  font-family: var(--rb-font-num);
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--rb-cyan);
}

.page-faq .faq-stats__item:nth-child(1) .faq-stats__num { color: var(--rb-red); }
.page-faq .faq-stats__item:nth-child(2) .faq-stats__num { color: var(--rb-cyan); }
.page-faq .faq-stats__item:nth-child(3) .faq-stats__num { color: var(--rb-blue-soft); }
.page-faq .faq-stats__item:nth-child(4) .faq-stats__num { color: var(--rb-paper); }

.page-faq .faq-stats__unit {
  font-size: 13px;
  line-height: 1.6;
  color: var(--rb-steel);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: clamp(46px, 7vw, 96px) 0 clamp(60px, 9vw, 130px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(34px, 5vw, 64px);
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(46px, 6.5vw, 88px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--faq-rule-strong);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--rb-font-editorial);
  font-size: clamp(21px, 2.7vw, 32px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--rb-paper);
}

.page-faq .faq-group__meta {
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--rb-font-num);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rb-steel);
  white-space: nowrap;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: block;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-rule);
  transition: background-color 0.28s var(--rb-ease);
}

.page-faq .faq-item:hover {
  background-color: rgba(20, 23, 31, 0.55);
}

.page-faq .faq-item[open] {
  background-color: rgba(20, 23, 31, 0.7);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 22px 8px;
  list-style: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--rb-blue-soft);
  outline-offset: -3px;
  border-radius: 10px;
}

.page-faq .faq-item__idx {
  flex: 0 0 auto;
  min-width: 26px;
  font-family: var(--rb-font-num);
  font-size: 13px;
  line-height: 1.95;
  letter-spacing: 0.06em;
  color: var(--rb-steel);
  transition: color 0.28s var(--rb-ease);
}

.page-faq .faq-item[open] .faq-item__idx {
  color: var(--rb-red);
}

.page-faq .faq-item__label {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--rb-font-display);
  font-size: clamp(16.5px, 2vw, 21px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.005em;
  color: var(--rb-paper);
  transition: color 0.28s var(--rb-ease);
}

.page-faq .faq-item__q:hover .faq-item__label {
  color: var(--rb-blue-soft);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 5px;
  border: 1px solid var(--faq-rule-strong);
  border-radius: 50%;
  color: var(--rb-paper);
  transition: border-color 0.28s var(--rb-ease), color 0.28s var(--rb-ease),
    transform 0.28s var(--rb-ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform 0.28s var(--rb-ease), opacity 0.28s var(--rb-ease);
}

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

.page-faq .faq-item__mark::after {
  width: 1px;
  height: 9px;
}

.page-faq .faq-item[open] .faq-item__mark {
  color: var(--rb-red);
  border-color: var(--rb-red);
  transform: rotate(180deg);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  padding: 0 8px 26px 48px;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--faq-copy);
  animation: faq-fade 0.34s var(--rb-ease) both;
}

.page-faq .faq-item__a a {
  color: var(--rb-blue-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(110, 155, 255, 0.4);
  transition: color 0.24s var(--rb-ease), border-color 0.24s var(--rb-ease);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--rb-paper);
  border-bottom-color: var(--rb-red);
}

@keyframes faq-fade {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(26px, 3.4vw, 42px) 0 0;
  border: 1px solid var(--faq-rule);
  background: var(--rb-carbon);
  overflow: hidden;
}

.page-faq .faq-figure .rb-figure__img {
  display: block;
  line-height: 0;
  position: relative;
}

.page-faq .faq-figure .rb-figure__img::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 13, 18, 0) 45%, rgba(11, 13, 18, 0.65));
  pointer-events: none;
}

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

.page-faq .faq-figure .rb-figure__cap {
  padding: 14px clamp(16px, 2.4vw, 24px) 18px;
  border-top: 1px solid var(--faq-rule);
  font-size: 13px;
  line-height: 1.7;
  color: var(--rb-steel);
}

/* ---------- 联系卡片 ---------- */
.page-faq .faq-contact {
  margin-top: 26px;
  padding: clamp(22px, 3.4vw, 36px);
  border: 1px solid var(--faq-rule-strong);
  border-left: 3px solid var(--rb-red);
  border-radius: var(--rb-radius-sm);
  background:
    linear-gradient(180deg, rgba(30, 94, 255, 0.06), rgba(20, 23, 31, 0.9));
  box-shadow: var(--rb-shadow);
}

.page-faq .faq-contact__title {
  margin: 0 0 12px;
  font-family: var(--rb-font-display);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--rb-paper);
}

.page-faq .faq-contact__lead {
  margin: 0 0 18px;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-copy);
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-contact__label {
  font-family: var(--rb-font-num);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--rb-steel);
}

.page-faq .faq-contact__value {
  font-family: var(--rb-font-num);
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--rb-paper);
  word-break: break-all;
}

.page-faq .faq-contact__value .rb-copy {
  font-family: var(--rb-font-num);
  font-size: 15px;
  color: var(--rb-blue-soft);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-align: left;
  border-bottom: 1px dashed rgba(110, 155, 255, 0.45);
  transition: color 0.24s var(--rb-ease), border-color 0.24s var(--rb-ease);
}

.page-faq .faq-contact__value .rb-copy:hover,
.page-faq .faq-contact__value .rb-copy:focus-visible {
  color: var(--rb-paper);
  border-bottom-color: var(--rb-red);
  outline: none;
}

.page-faq .rb-copy__status {
  font-family: var(--rb-font-num);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--rb-cyan);
  min-height: 1em;
}

.page-faq .faq-contact__note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--rb-steel);
}

.page-faq .faq-contact__more {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--faq-copy);
}

.page-faq .faq-contact__more a {
  color: var(--rb-blue-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(110, 155, 255, 0.4);
}

.page-faq .faq-contact__more a:hover,
.page-faq .faq-contact__more a:focus-visible {
  color: var(--rb-paper);
  border-bottom-color: var(--rb-red);
}

/* ---------- 目录索引 ---------- */
.page-faq .faq-index {
  order: -1;
  padding-top: 2px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--rb-font-num);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rb-steel);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-index__link {
  display: block;
  white-space: nowrap;
  padding: 8px 14px;
  border: 1px solid var(--faq-rule-strong);
  border-radius: 999px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--faq-copy);
  text-decoration: none;
  transition: color 0.24s var(--rb-ease), border-color 0.24s var(--rb-ease),
    background-color 0.24s var(--rb-ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--rb-paper);
  border-color: var(--rb-blue-soft);
  outline: none;
}

.page-faq .faq-index__link[aria-current="true"] {
  color: var(--rb-paper);
  border-color: var(--rb-red);
  background: rgba(255, 45, 85, 0.12);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 981px) {
  .page-faq .faq-stats__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-body__grid {
    grid-template-columns: minmax(0, 1fr) var(--faq-index-w);
    gap: clamp(44px, 6vw, 92px);
    align-items: start;
  }

  .page-faq .faq-index {
    order: 0;
    position: sticky;
    top: var(--faq-top);
    align-self: start;
    padding-top: 6px;
    border-left: 1px solid var(--faq-rule);
    padding-left: 22px;
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-index__link {
    padding: 10px 0 10px 12px;
    border: none;
    border-radius: 0;
    border-left: 2px solid transparent;
    font-size: 14px;
    line-height: 1.5;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--rb-blue-soft);
    background: none;
  }

  .page-faq .faq-index__link[aria-current="true"] {
    border-left-color: var(--rb-red);
    background: none;
    color: var(--rb-paper);
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: baseline;
    gap: 6px 16px;
  }

  .page-faq .rb-copy__status {
    grid-column: 2;
  }
}

/* ---------- 窄屏收紧 ---------- */
@media (max-width: 560px) {
  .page-faq .faq-item__q {
    gap: 10px;
    padding: 18px 4px;
  }

  .page-faq .faq-item__idx {
    min-width: 22px;
    font-size: 12px;
  }

  .page-faq .faq-item__a {
    padding: 0 4px 22px 32px;
    font-size: 15px;
  }

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

  .page-faq .faq-hero__figure img {
    max-height: 200px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item,
  .page-faq .faq-item__idx,
  .page-faq .faq-item__label,
  .page-faq .faq-item__mark,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-index__link,
  .page-faq .faq-crumb a {
    transition-duration: 0.01ms;
  }

  .page-faq .faq-item[open] .faq-item__mark {
    transform: none;
  }
}