.page-faq {
  background: var(--rock);
  color: var(--cream);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 48px 0 56px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(44, 232, 180, .16) 0%, rgba(44, 232, 180, 0) 58%),
    linear-gradient(162deg, var(--lake) 0%, var(--rock) 62%, var(--rock) 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .breadcrumbs {
  margin-bottom: 26px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-hero__lead {
  max-width: 720px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(30px, 7.4vw, 58px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-faq .faq-hero__sub {
  margin: 20px 0 0;
  max-width: 620px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 240, 234, .78);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__panel {
  align-self: start;
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(18, 22, 26, .46);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(6px);
}

.page-faq .faq-hero__metric {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-hero__metric:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-hero__fig {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__cap {
  font-size: 14px;
  color: rgba(242, 240, 234, .72);
  letter-spacing: .04em;
}

.page-faq .faq-hero__hint {
  margin: 16px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--lake-light);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  background: var(--rock);
}

.page-faq .faq-layout {
  display: grid;
  gap: 28px;
}

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

/* ---------- 分类锚点 ---------- */
.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gray);
}

.page-faq .faq-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__list a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(46, 54, 60, .5);
  color: var(--cream);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  border-color: var(--neon);
  background: rgba(44, 232, 180, .12);
  color: var(--neon);
}

.page-faq .faq-rail__num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--lake-light);
}

.page-faq .faq-rail__count {
  padding: 1px 7px;
  border-radius: 999px;
  background: rgba(242, 240, 234, .1);
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--gray);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: 34px 0 8px;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-group__head {
  position: relative;
  margin-bottom: 22px;
  padding-left: 62px;
}

.page-faq .faq-group__num {
  position: absolute;
  left: 0;
  top: 4px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: rgba(44, 232, 180, .5);
  letter-spacing: -0.02em;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(24px, 4.6vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-faq .faq-group__head p {
  margin: 12px 0 0;
  max-width: 660px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 240, 234, .7);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-acc {
  border-top: 1px solid var(--line);
}

.page-faq .acc-item {
  position: relative;
  border-bottom: 1px solid var(--line);
  transition: background .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .acc-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background .18s var(--ease);
}

.page-faq .acc-q {
  margin: 0;
  font-size: 1rem;
  font-weight: 400;
}

.page-faq .acc-trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 20px 4px 20px 18px;
  border: 0;
  background: none;
  color: var(--cream);
  font-family: inherit;
  font-size: clamp(17px, 2.5vw, 21px);
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: color .18s var(--ease);
}

.page-faq .acc-trigger::after {
  content: "+";
  flex: none;
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--lake-light);
  transition: transform .18s var(--ease), color .18s var(--ease);
}

.page-faq .acc-trigger[aria-expanded="true"]::after {
  content: "−";
  color: var(--neon);
}

.page-faq .acc-trigger:hover,
.page-faq .acc-trigger:focus-visible {
  color: var(--neon);
}

.page-faq .acc-item:has(.acc-trigger[aria-expanded="true"]) {
  background: linear-gradient(90deg, rgba(44, 232, 180, .08) 0%, rgba(44, 232, 180, 0) 62%);
  box-shadow: inset 0 1px 0 rgba(44, 232, 180, .18);
}

.page-faq .acc-item:has(.acc-trigger[aria-expanded="true"])::before {
  background: var(--neon);
}

.page-faq .acc-panel {
  margin: 0 0 20px 18px;
  padding: 18px 20px;
  border-radius: 5px;
  background: var(--cream);
  color: var(--graphite);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .acc-panel p {
  margin: 0 0 10px;
}

.page-faq .acc-panel p:last-child {
  margin-bottom: 0;
}

.page-faq .acc-panel a {
  color: var(--lake);
  text-decoration: underline;
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  position: relative;
  padding: 7px 0 7px 42px;
  counter-increment: faqstep;
  font-size: 16px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  font-weight: 700;
  color: var(--lake);
}

/* ---------- 数据条演示 ---------- */
.page-faq .faq-bars {
  margin: 26px 0 0;
  padding: 22px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--rock-mid);
}

.page-faq .faq-bars__title {
  margin: 0 0 16px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--lake-light);
}

.page-faq .faq-bar-row {
  display: grid;
  grid-template-columns: 92px 1fr 52px;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.page-faq .faq-bar-row__label {
  font-size: 13px;
  color: rgba(242, 240, 234, .74);
}

.page-faq .faq-bar-row__value {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 16px;
  font-weight: 700;
  color: var(--neon);
  text-align: right;
}

.page-faq .faq-bars .annotation {
  margin: 14px 0 0;
}

/* ---------- 图与横注 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 5px;
}

.page-faq .faq-aside {
  margin: 22px 0 8px;
  padding: 14px 4px 14px 18px;
  border-left: 2px solid var(--amber);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(242, 240, 234, .74);
}

/* ---------- 联系块 ---------- */
.page-faq .faq-contact {
  margin: 30px 0 0;
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: linear-gradient(150deg, rgba(14, 74, 99, .7) 0%, rgba(46, 54, 60, .6) 100%);
}

.page-faq .faq-contact__title {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--neon);
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact__list li {
  display: grid;
  gap: 4px;
  font-size: 16px;
  line-height: 1.6;
  color: var(--cream);
}

.page-faq .faq-contact__list span {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gray);
}

.page-faq .faq-contact__list a {
  color: var(--neon);
  text-decoration: none;
  word-break: break-all;
}

.page-faq .faq-contact__list a:hover,
.page-faq .faq-contact__list a:focus-visible {
  text-decoration: underline;
}

.page-faq .faq-contact__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 240, 234, .72);
}

.page-faq .faq-contact__note a {
  color: var(--lake-light);
  text-decoration: underline;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 880px) {
  .page-faq .faq-hero {
    padding: 64px 0 78px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, .85fr);
    align-items: end;
    gap: 56px;
  }

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

  .page-faq .faq-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 48px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 6px;
  }

  .page-faq .faq-rail__list a {
    width: 100%;
    justify-content: flex-start;
    border-radius: 4px;
    border-color: transparent;
    border-left: 3px solid transparent;
    background: transparent;
    padding: 10px 12px;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    border-left-color: var(--neon);
    background: rgba(44, 232, 180, .08);
  }

  .page-faq .faq-rail__count {
    margin-left: auto;
  }

  .page-faq .faq-group__head {
    padding-left: 78px;
  }

  .page-faq .faq-group__num {
    font-size: 38px;
    top: 2px;
  }

  .page-faq .faq-contact__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 32px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-group__head p {
    font-size: 16px;
  }

  .page-faq .faq-bar-row {
    grid-template-columns: 110px 1fr 64px;
  }
}