.page-faq {
  --faq-bg-deep: #071628;
  --faq-surface: rgba(18, 42, 68, 0.65);
  --faq-line: rgba(46, 74, 110, 0.55);
  background: var(--c-bg);
  color: var(--c-text);
}

/* ===== Hero ===== */
.page-faq .faq-hero {
  position: relative;
  background:
    linear-gradient(150deg, rgba(255, 122, 0, 0.14), transparent 45%),
    var(--faq-bg-deep);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero__inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding-top: clamp(1.25rem, 4vw, 2.5rem);
  padding-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-hero__copy {
  max-width: 760px;
}

.page-faq .faq-hero__copy h1 {
  font-family: var(--f-head);
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.05;
  margin: 0.75rem 0 1rem;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 64ch;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 0.25rem;
  padding-right: 2rem;
}

.page-faq .faq-hero__meta .stat__value {
  font-size: 1.6rem;
}

.page-faq .faq-hero__media {
  overflow: hidden;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 130px;
  object-fit: cover;
  object-position: center;
}

@media (min-width: 768px) {
  .page-faq .faq-hero__inner {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }

  .page-faq .faq-hero__media img {
    height: 240px;
  }
}

/* ===== TOC 快速跳转 ===== */
.page-faq .faq-toc {
  border-bottom: 1px solid var(--faq-line);
  background: rgba(7, 22, 40, 0.6);
}

.page-faq .faq-toc .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.page-faq .faq-toc__lead {
  display: none;
  margin: 0 1rem 0 0;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-muted);
  white-space: nowrap;
  font-weight: 400;
}

@media (min-width: 760px) {
  .page-faq .faq-toc__lead {
    display: block;
  }
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.1rem;
  font-family: var(--f-body);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-text);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition:
    color 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

.page-faq .faq-toc__link span {
  font-family: var(--f-mono);
  font-size: 0.85rem;
  color: var(--c-accent);
}

.page-faq .faq-toc__link:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

/* ===== 分类章节 ===== */
.page-faq .faq-section {
  padding: clamp(2rem, 6vw, 4.5rem) 0;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-section__grid {
  display: grid;
  gap: var(--gap);
  align-items: start;
}

@media (min-width: 900px) {
  .page-faq .faq-section__grid {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4.5rem);
  }
}

.page-faq .faq-section__aside {
  border-top: 4px solid var(--c-accent);
  padding-top: 1rem;
}

.page-faq .faq-section__num {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: clamp(2.2rem, 4vw, 3rem);
  line-height: 1;
  color: var(--c-accent);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-faq .faq-section__title {
  margin: 0.25rem 0 0.5rem;
  font-family: var(--f-head);
  font-size: clamp(1.35rem, 3vw, 1.8rem);
  line-height: 1.15;
}

.page-faq .faq-section__desc {
  margin: 0 0 1rem;
  color: var(--c-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.page-faq .faq-section__more {
  display: inline-block;
  color: var(--c-accent);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-section__more:hover {
  border-bottom-color: var(--c-accent);
}

@media (min-width: 900px) {
  .page-faq .faq-section__aside {
    border-top: none;
    border-left: 4px solid var(--c-accent);
    padding-left: 1.25rem;
    padding-top: 0;
  }

  .page-faq .faq-section__title {
    writing-mode: vertical-rl;
    margin: 0.75rem 0 0;
  }

  .page-faq .faq-section__desc {
    margin-top: 0.5rem;
  }

  .page-faq .faq-section__more {
    margin-top: 0.5rem;
  }
}

/* ===== FAQ 折叠卡片 ===== */
.page-faq .faq-section__list {
  display: grid;
  gap: 0.8rem;
  min-width: 0;
}

.page-faq .faq-card {
  background: var(--faq-surface);
  border: 1px solid var(--c-border);
  border-left: 3px solid transparent;
  transition:
    border-color 0.22s var(--ease),
    background 0.22s var(--ease);
}

.page-faq .faq-card[open] {
  border-left-color: var(--c-accent);
  background: var(--c-surface);
}

.page-faq .faq-card__head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.05rem 1.25rem;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-card__badge {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--c-accent);
  background: rgba(255, 122, 0, 0.12);
  padding: 0.2rem 0.45rem;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.page-faq .faq-card__question {
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.45;
  flex: 1;
}

.page-faq .faq-card__head::after {
  content: "+";
  flex-shrink: 0;
  margin-left: auto;
  font-family: var(--f-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--c-accent);
  transition: transform 0.25s var(--ease);
}

.page-faq .faq-card[open] .faq-card__head::after {
  transform: rotate(45deg);
}

.page-faq .faq-card__body {
  margin-left: 3rem;
  padding: 0.8rem 1.25rem 1.25rem 0;
  border-top: 1px dashed rgba(46, 74, 110, 0.6);
  color: var(--c-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-faq .faq-card__body p {
  margin: 0;
}

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

/* ===== 订阅分类强调 ===== */
.page-faq .faq-section--subscribe {
  background: linear-gradient(100deg, rgba(0, 255, 136, 0.045), transparent 38%);
}

.page-faq .faq-section--subscribe .faq-section__aside {
  border-top-color: var(--c-highlight);
}

.page-faq .faq-section--subscribe .faq-section__num,
.page-faq .faq-section--subscribe .faq-section__more {
  color: var(--c-highlight);
}

.page-faq .faq-section--subscribe .faq-section__more {
  border-bottom-color: transparent;
}

.page-faq .faq-section--subscribe .faq-section__more:hover {
  border-bottom-color: var(--c-highlight);
}

@media (min-width: 900px) {
  .page-faq .faq-section--subscribe .faq-section__aside {
    border-left-color: var(--c-highlight);
  }
}

.page-faq .faq-section--subscribe .faq-card[open] {
  border-left-color: var(--c-highlight);
}

.page-faq .faq-section--subscribe .faq-card__badge {
  color: var(--c-highlight);
  background: rgba(0, 255, 136, 0.08);
}

.page-faq .faq-section--subscribe .faq-card__head::after {
  color: var(--c-highlight);
}

/* ===== 订阅提醒示意图 ===== */
.page-faq .faq-submedia {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
  background: var(--faq-bg-deep);
  border: 1px solid var(--c-border);
  padding: 1.25rem;
}

@media (min-width: 760px) {
  .page-faq .faq-submedia {
    grid-template-columns: minmax(0, 340px) 1fr;
    align-items: center;
  }
}

.page-faq .faq-submedia__img {
  overflow: hidden;
  border: 1px solid var(--c-border);
}

.page-faq .faq-submedia__img img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.page-faq .faq-submedia__note p {
  margin: 0 0 1rem;
  color: var(--c-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-faq .faq-submedia__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2rem;
}

.page-faq .faq-submedia__stats .stat__value {
  font-size: 1.5rem;
}

/* ===== 底部 CTA ===== */
.page-faq .faq-cta {
  padding: clamp(2rem, 6vw, 4rem) 0 0;
}

.page-faq .faq-cta__panel {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background:
    linear-gradient(125deg, rgba(255, 122, 0, 0.12), transparent 55%),
    var(--faq-bg-deep);
  border: 1px solid var(--c-border);
  border-top: 4px solid var(--c-accent);
  padding: clamp(1.5rem, 5vw, 3rem);
}

.page-faq .faq-cta__copy {
  max-width: 56ch;
}

.page-faq .faq-cta__hairline {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent);
}

.page-faq .faq-cta__copy h2 {
  margin: 0.5rem 0 0.75rem;
  font-family: var(--f-head);
  font-size: clamp(1.6rem, 4vw, 2.25rem);
  line-height: 1.1;
}

.page-faq .faq-cta__copy .lead {
  margin: 0;
}

@media (max-width: 520px) {
  .page-faq .faq-cta__panel .btn {
    width: 100%;
    text-align: center;
  }
}