.page-faq {
  --faq-accent-soft: rgba(198, 255, 61, 0.35);
}

/* ============ 首屏 ============ */
.page-faq .guide-hero {
  padding: clamp(24px, 4vw, 44px) 0 0;
}

.page-faq .guide-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .guide-hero__kicker {
  display: inline-block;
  margin: 0;
  padding: 4px 10px;
  background: var(--tint);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  line-height: 1.6;
}

.page-faq .guide-hero__title {
  margin: 18px 0 0;
  font-size: clamp(1.9rem, 6.4vw, 3.6rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text);
  transform: skewX(-6deg);
  transform-origin: left top;
}

.page-faq .guide-hero__lede {
  margin: 22px 0 0;
  max-width: 56ch;
  font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
  line-height: 1.85;
  color: var(--muted);
}

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

.page-faq .guide-hero__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.page-faq .guide-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  filter: contrast(1.08) saturate(0.86);
}

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

/* ============ 章节索引 ============ */
.page-faq .guide-index {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  margin-top: clamp(28px, 5vw, 48px);
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .guide-index__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .guide-index .index-nav__link {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  padding: 2px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .guide-index .index-nav__link:hover,
.page-faq .guide-index .index-nav__link[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ============ 章节外壳 ============ */
.page-faq .guide-section {
  padding-top: clamp(52px, 8vw, 96px);
  scroll-margin-top: calc(var(--header-h-compact) + 24px);
}

.page-faq .guide-section--end {
  padding-bottom: clamp(56px, 9vw, 112px);
}

.page-faq .guide-section__head {
  max-width: 66ch;
}

.page-faq .guide-section__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
}

.page-faq .guide-section__title {
  margin: 0;
  font-size: clamp(1.4rem, 3.6vw, 2.15rem);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-faq .guide-section__desc {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: clamp(0.9375rem, 1.4vw, 1rem);
  line-height: 1.85;
}

/* ============ 问答列表 ============ */
.page-faq .faq-list {
  margin-top: clamp(24px, 4vw, 36px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  transition: background-color 0.3s var(--ease);
}

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, rgba(198, 255, 61, 0.05), rgba(198, 255, 61, 0) 62%);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 18px;
  gap: 0 12px;
  align-items: start;
  padding: 18px 0;
  list-style: none;
  cursor: pointer;
  color: var(--text);
  font-size: clamp(0.9375rem, 1.6vw, 1.0625rem);
  font-weight: 700;
  line-height: 1.55;
}

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

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

.page-faq .faq-q__num {
  display: inline-grid;
  place-items: center;
  min-width: 30px;
  height: 22px;
  padding: 0 5px;
  margin-top: 1px;
  background: var(--accent);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
}

.page-faq .faq-q__text {
  overflow-wrap: anywhere;
}

.page-faq .faq-q__mark {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  justify-self: end;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease);
}

.page-faq .faq-q__mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-q__mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-q__mark::before {
  background: var(--accent);
}

.page-faq .faq-item[open] .faq-q__mark::after {
  transform: scaleY(0);
}

.page-faq .faq-a {
  padding: 0 0 22px 46px;
  color: var(--muted);
  font-size: clamp(0.9rem, 1.4vw, 0.9688rem);
  line-height: 1.9;
}

.page-faq .faq-a p {
  margin: 0 0 0.85em;
}

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

.page-faq .faq-a strong {
  color: var(--text);
  font-weight: 700;
}

.page-faq .faq-a .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text);
}

/* ============ 图文 + 三步 ============ */
.page-faq .guide-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 36px);
}

.page-faq .guide-split__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.page-faq .guide-split__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-faq .guide-split__figure .img-frame__caption {
  display: block;
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.page-faq .guide-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: gstep;
}

.page-faq .guide-steps li {
  position: relative;
  padding: 16px 0 16px 46px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: clamp(0.9rem, 1.4vw, 0.9688rem);
  line-height: 1.85;
}

.page-faq .guide-steps li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .guide-steps li::before {
  counter-increment: gstep;
  content: "0" counter(gstep);
  position: absolute;
  left: 0;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.page-faq .guide-steps strong {
  display: block;
  margin-bottom: 4px;
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
}

/* ============ 联系渠道 ============ */
.page-faq .guide-support {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(24px, 4vw, 36px);
}

.page-faq .support-card {
  padding: 20px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .support-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.page-faq .support-card__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .support-card__val {
  margin: 12px 0 0;
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.page-faq .support-card__note {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.84375rem;
  line-height: 1.75;
}

.page-faq .guide-support__note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 66ch;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.9;
}

.page-faq .guide-support__note a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-accent-soft);
  transition: border-color 0.25s var(--ease);
}

.page-faq .guide-support__note a:hover {
  border-bottom-color: var(--accent);
}

/* ============ 桌面端：问答左右两栏 ============ */
@media (min-width: 900px) {
  .page-faq .guide-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-item {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: clamp(24px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-q {
    padding-right: 10px;
  }

  .page-faq .faq-a {
    padding: 18px 0 22px;
  }
}

@media (min-width: 768px) {
  .page-faq .guide-support {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ============ 窄屏兜底 ============ */
@media (max-width: 400px) {
  .page-faq .faq-q {
    grid-template-columns: 30px minmax(0, 1fr) 16px;
    gap: 0 9px;
  }

  .page-faq .faq-a {
    padding-left: 39px;
  }

  .page-faq .guide-steps li {
    padding-left: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .support-card,
  .page-faq .faq-item {
    transition: none;
  }

  .page-faq .guide-hero__title {
    transform: none;
  }
}