.page-faq {
  --faq-tree-w: 264px;
  --faq-ink-sand: #8A3A12;
  padding-top: var(--top-h);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 0;
  background:
    repeating-linear-gradient(112deg, rgba(124, 143, 163, .07) 0 2px, transparent 2px 10px),
    linear-gradient(180deg, var(--navy) 0%, var(--navy-deep) 100%);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -120px;
  width: min(640px, 68%);
  height: 320px;
  background: linear-gradient(200deg, rgba(52, 231, 214, .18), rgba(52, 231, 214, 0) 72%);
  transform: rotate(-9deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumbs__sep {
  margin: 0 10px;
  color: var(--steel);
}

.page-faq .faq-crumbs__now {
  color: var(--paper);
}

.page-faq .faq-hero__eyebrow {
  display: block;
  margin: 22px 0 0;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 20ch;
  font-size: clamp(30px, 5.2vw, 58px);
  line-height: 1.12;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 40ch;
  color: #C7D5E3;
}

.page-faq .faq-hero__figure {
  position: relative;
  z-index: 1;
  margin: 36px auto 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--rule-strong);
  border-bottom: 0;
  box-shadow: var(--shadow-soft);
  filter: saturate(.92);
}

/* ---------- 通用小标题 ---------- */
.page-faq .faq-head {
  margin-bottom: 28px;
}

.page-faq .faq-h2 {
  margin: 12px 0 0;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-sub {
  margin: 12px 0 0;
  max-width: 46ch;
  color: var(--steel);
  font-size: 15px;
  line-height: 1.7;
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
}

.page-faq .faq-step {
  position: relative;
  padding: 24px 20px 26px;
  background: var(--panel);
  border: 2px solid var(--rule-strong);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-step__n {
  display: inline-block;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--teal);
  padding-bottom: 6px;
  border-bottom: 3px solid var(--orange);
}

.page-faq .faq-step__t {
  margin: 16px 0 10px;
  font-size: 19px;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-step p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.72;
  color: #B9C8D7;
}

.page-faq .faq-step__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 2px solid rgba(52, 231, 214, .45);
  padding-bottom: 2px;
}

.page-faq .faq-step__link:hover,
.page-faq .faq-step__link:focus-visible {
  border-bottom-color: var(--orange);
  color: var(--teal-soft);
}

/* ---------- 问答主区 ---------- */
.page-faq .faq-ask__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-faq .faq-tree {
  border-left: 2px solid var(--rule);
  padding-left: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-faq .faq-tree__title {
  margin: 0 0 18px;
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-tree__group {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.page-faq .faq-tree__group:last-child {
  margin-bottom: 0;
}

.page-faq .faq-tree__head {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--paper);
}

.page-faq .faq-tree__group a {
  position: relative;
  display: block;
  padding: 5px 0 5px 14px;
  color: var(--steel);
  text-decoration: none;
  line-height: 1.45;
  transition: color .2s var(--ease), padding-left .2s var(--ease);
}

.page-faq .faq-tree__group a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 7px;
  height: 1px;
  background: currentColor;
}

.page-faq .faq-tree__group a:hover,
.page-faq .faq-tree__group a:focus-visible {
  color: var(--teal);
  padding-left: 18px;
}

.page-faq .faq-tree__group a:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.page-faq .faq-answers {
  display: grid;
  gap: 44px;
  min-width: 0;
}

.page-faq .faq-block__t {
  margin: 0 0 16px;
  padding-bottom: 12px;
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--paper);
  border-bottom: 2px solid var(--rule-strong);
}

/* ---------- 单条问答 ---------- */
.page-faq .qa {
  margin-bottom: 12px;
  background: var(--panel);
  border: 2px solid var(--rule);
  scroll-margin-top: calc(var(--top-h) + 28px);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(52, 231, 214, .5);
  box-shadow: var(--shadow-hard);
}

.page-faq .qa:target {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(52, 231, 214, .2), var(--shadow-hard);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -3px;
}

.page-faq .qa__tri {
  flex: none;
  width: 0;
  height: 0;
  margin-top: 7px;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 10px solid var(--orange);
  transition: transform .25s var(--ease);
}

.page-faq .qa[open] .qa__tri {
  transform: rotate(90deg);
}

.page-faq .qa__a {
  padding: 2px 18px 20px;
  color: #BCCADA;
  font-size: 15.5px;
  line-height: 1.75;
}

.page-faq .qa__lead {
  margin: 0 0 12px;
  color: var(--paper);
}

.page-faq .qa__lead strong {
  color: var(--teal-soft);
  font-weight: 700;
}

.page-faq .qa__steps {
  margin: 0 0 14px;
  padding-left: 22px;
  display: grid;
  gap: 7px;
}

.page-faq .qa__steps li::marker {
  font-family: var(--font-mono);
  color: var(--teal);
}

.page-faq .qa__tip {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid rgba(52, 231, 214, .45);
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 家庭观赛配图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--rule-strong);
  box-shadow: var(--shadow-hard);
  filter: saturate(.95);
}

.page-faq .faq-figure__cap {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 个人信息指向 ---------- */
.page-faq .faq-note {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-note a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 231, 214, .5);
}

.page-faq .faq-note a:hover,
.page-faq .faq-note a:focus-visible {
  color: var(--teal-soft);
  border-bottom-color: var(--orange);
}

/* ---------- 联系引导条 ---------- */
.page-faq .faq-help__bar {
  display: grid;
  gap: 24px;
  padding: 28px 22px 30px;
  background: var(--sand);
  color: var(--navy-deep);
  border: 2px solid var(--navy-deep);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-help__eyebrow {
  margin: 0;
  color: var(--faq-ink-sand);
}

.page-faq .faq-help__t {
  margin: 12px 0 0;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.18;
  letter-spacing: -.015em;
  color: var(--navy-deep);
}

.page-faq .faq-help__p {
  margin: 14px 0 0;
  max-width: 44ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: #2A3A4C;
}

.page-faq .faq-help__fine {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: #55432A;
}

.page-faq .faq-help__fine a {
  color: var(--faq-ink-sand);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-faq .faq-help__ghost {
  border-color: var(--navy-deep);
  color: var(--navy-deep);
  background: transparent;
}

.page-faq .faq-help__ghost:hover,
.page-faq .faq-help__ghost:focus-visible {
  background: var(--navy-deep);
  color: var(--sand);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding-top: 34px;
  }

  .page-faq .faq-step {
    padding: 28px 26px 30px;
  }

  .page-faq .faq-help__bar {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 36px;
    padding: 36px 38px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-ask__grid {
    grid-template-columns: var(--faq-tree-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-tree {
    position: sticky;
    top: calc(var(--top-h) + 24px);
    max-height: calc(100vh - var(--top-h) - 48px);
    overflow-y: auto;
    padding-right: 6px;
  }

  .page-faq .faq-answers {
    gap: 56px;
  }

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

  .page-faq .qa__a {
    padding: 4px 22px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__tri,
  .page-faq .faq-tree__group a,
  .page-faq .faq-help__ghost {
    transition: none;
  }
}