.page-faq {
  --step-num-size: 42px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.75;
}

/* ---------- Hero 手册封面区 ---------- */
.faq-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0B3C5D 0%, #0B3C5D 55%, #144B73 100%);
  color: #fff;
  padding: 40px 0 52px;
}

.faq-hero::before {
  content: "";
  position: absolute;
  top: 32px;
  right: -56px;
  width: 200px;
  height: 200px;
  border: 3px solid rgba(241, 143, 1, 0.35);
  border-radius: 10px;
  transform: rotate(30deg);
}

.faq-hero::after {
  content: "";
  position: absolute;
  top: 78px;
  right: -16px;
  width: 120px;
  height: 120px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  transform: rotate(30deg);
}

.faq-hero .content-shell {
  position: relative;
  z-index: 2;
}

.faq-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.7);
}

.faq-breadcrumbs a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: color 0.2s ease;
}

.faq-breadcrumbs a:hover,
.faq-breadcrumbs a:focus-visible {
  color: var(--amber);
}

.faq-breadcrumbs [aria-current="page"] {
  color: var(--amber);
}

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

.faq-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
}

.faq-eyebrow .index-chip {
  background: var(--orange);
  color: #fff;
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 11px;
}

.faq-hero .faq-eyebrow {
  color: var(--amber);
}

.faq-hero .faq-eyebrow .index-chip {
  background: var(--orange);
  color: #fff;
}

.faq-hero-heading h1 {
  font-size: clamp(1.55rem, 5vw, 2.3rem);
  font-weight: 900;
  line-height: 1.35;
  margin: 0 0 18px;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.faq-hero-lead {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  max-width: 620px;
}

.faq-hero-card {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  padding: 22px 24px;
}

.faq-hero-card-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 14px;
}

.faq-toc {
  display: grid;
  gap: 2px;
}

.faq-toc-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.faq-toc-link:last-child {
  border-bottom: 0;
}

.faq-toc-link:hover,
.faq-toc-link:focus-visible {
  color: var(--amber);
  padding-left: 4px;
}

.faq-toc .index-chip {
  background: rgba(255, 255, 255, 0.14);
  color: var(--amber);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 11px;
}

/* ---------- 分区标题 ---------- */
.faq-section-head {
  max-width: 720px;
  margin-bottom: 36px;
}

.faq-section-head h2 {
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--navy);
  margin: 0 0 12px;
  line-height: 1.4;
}

.faq-section-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- 快速上手指南：步骤卡片 ---------- */
.faq-steps-grid {
  display: grid;
  gap: 16px;
}

.faq-step-card {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  padding: 24px 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.faq-step-card:hover,
.faq-step-card:focus-within,
.faq-step-card:active {
  border-color: var(--blue);
  box-shadow: 0 6px 0 -2px rgba(46, 139, 192, 0.12);
  transform: translateY(-2px);
}

.faq-step-num {
  display: inline-block;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: var(--step-num-size);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.faq-step-body h3 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--navy);
  margin: 0 0 8px;
}

.faq-step-body p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.faq-guide-figure {
  margin: 20px 0 0;
}

.faq-guide-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 14px;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}

.faq-guide-figure figcaption {
  padding: 10px 2px 0;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--muted);
}

/* ---------- 移动端操作区 ---------- */
.faq-mobile-grid {
  display: grid;
  gap: 32px;
}

.faq-mobile-media .faq-mobile-figure {
  margin: 0 auto;
  max-width: 300px;
}

.faq-mobile-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 20px;
  object-fit: cover;
  aspect-ratio: 400 / 850;
  box-shadow: 0 18px 40px rgba(4, 20, 40, 0.2);
}

.faq-mobile-figure figcaption {
  padding-top: 10px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.faq-mobile-content h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--navy);
  margin: 0 0 16px;
}

.faq-mobile-ol {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  counter-reset: faqMobileStep;
  display: grid;
  gap: 12px;
}

.faq-mobile-ol li {
  counter-increment: faqMobileStep;
  position: relative;
  padding: 14px 16px 14px 50px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.faq-mobile-ol li::before {
  content: counter(faqMobileStep);
  position: absolute;
  left: 12px;
  top: 14px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  background: var(--navy);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  border-radius: 50%;
}

.faq-mobile-ol li p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text);
}

.faq-tip {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  background: rgba(241, 143, 1, 0.07);
  border: 1px solid rgba(241, 143, 1, 0.25);
  border-left: 4px solid var(--orange);
  border-radius: 10px;
}

.faq-tip-label {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
}

.faq-tip p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text);
}

/* ---------- 常见问题折叠面板 ---------- */
.faq-accordion {
  display: grid;
  gap: 12px;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: var(--blue);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  list-style: none;
  cursor: pointer;
  padding: 18px 20px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.6;
  transition: background 0.2s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::marker {
  content: none;
}

.faq-item summary:hover,
.faq-item summary:focus-visible {
  background: var(--bg);
  outline: none;
}

.faq-q {
  flex: 1;
}

.faq-icon {
  position: relative;
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--blue);
  transition: background 0.2s ease, transform 0.2s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  border-radius: 2px;
}

.faq-icon::before {
  width: 11px;
  height: 2px;
}

.faq-icon::after {
  width: 2px;
  height: 11px;
  transition: transform 0.25s ease;
}

.faq-item[open] .faq-icon {
  background: var(--orange);
}

.faq-item[open] .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-a {
  padding: 0 20px 18px;
  border-top: 1px dashed var(--border);
}

.faq-a p {
  margin: 14px 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text);
}

/* ---------- 更多帮助 ---------- */
.faq-more-grid {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 28px;
  background: linear-gradient(135deg, #0B3C5D 0%, #144B73 100%);
  border-radius: 18px;
  padding: 36px 28px;
}

.faq-more-grid::after {
  content: "";
  position: absolute;
  right: -50px;
  bottom: -50px;
  width: 160px;
  height: 160px;
  border: 2px solid rgba(241, 143, 1, 0.5);
  border-radius: 12px;
  transform: rotate(25deg);
}

.faq-more-grid > * {
  position: relative;
  z-index: 1;
}

.faq-more-copy .faq-eyebrow {
  color: var(--amber);
}

.faq-more-copy .faq-eyebrow .index-chip {
  background: var(--orange);
  color: #fff;
}

.faq-more-copy h2 {
  font-size: 1.4rem;
  font-weight: 900;
  color: #fff;
  margin: 0 0 12px;
}

.faq-more-copy p {
  margin: 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
}

.faq-more-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.faq-btn-arrow {
  display: inline-block;
  margin-left: 8px;
  transition: transform 0.25s ease;
}

.faq-more-links .btn-primary:hover .faq-btn-arrow,
.faq-more-links .btn-primary:focus-visible .faq-btn-arrow {
  transform: translateX(4px);
}

.faq-more-link {
  color: var(--amber);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(241, 143, 1, 0.4);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.faq-more-link:hover,
.faq-more-link:focus-visible {
  border-bottom-color: var(--amber);
  color: #fff;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 768px) {
  .faq-hero {
    padding: 56px 0 68px;
  }

  .faq-hero-grid {
    grid-template-columns: 1fr 300px;
    gap: 40px;
    align-items: stretch;
  }

  .faq-hero-card {
    align-self: center;
  }

  .faq-mobile-grid {
    grid-template-columns: 300px 1fr;
    gap: 44px;
    align-items: start;
  }

  .faq-more-grid {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 48px 44px;
  }
}

@media (min-width: 860px) {
  .page-faq {
    --step-num-size: 58px;
  }

  .faq-steps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .faq-step-card {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    gap: 18px;
  }

  .faq-step-num {
    padding-top: 0;
  }
}