.page-faq {
  font-family: var(--font-sans);
  background: var(--panel);
}

/* ===== 页面顶部深色横幅 ===== */
.page-faq .faq-banner {
  background: var(--space);
  color: var(--white);
  overflow: hidden;
  position: relative;
  border-bottom: 4px solid var(--signal);
}

.page-faq .faq-banner::before {
  content: "";
  position: absolute;
  top: -90px;
  right: -90px;
  width: 320px;
  height: 320px;
  background: var(--glass);
  transform: rotate(12deg);
  pointer-events: none;
}

.page-faq .faq-banner .breadcrumb {
  padding-top: 22px;
  font-size: 0.875rem;
  position: relative;
  z-index: 1;
}

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

.page-faq .faq-banner .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--ease);
}

.page-faq .faq-banner .breadcrumb a:hover,
.page-faq .faq-banner .breadcrumb a:focus-visible {
  color: var(--signal);
}

.page-faq .faq-banner .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--muted);
}

.page-faq .faq-banner .breadcrumb li[aria-current="page"] {
  color: var(--white);
}

.page-faq .faq-banner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: 24px 0 56px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-banner .eyebrow {
  display: block;
  margin: 0 0 10px;
  color: var(--signal);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-faq .faq-banner h1 {
  margin: 0 0 18px;
  max-width: 820px;
  font-size: clamp(1.75rem, 5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.04em;
  color: var(--white);
}

.page-faq .faq-banner-desc {
  margin: 0 0 24px;
  max-width: 720px;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
}

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

.page-faq .faq-banner-meta .status-tag {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: var(--white);
}

.page-faq .faq-banner-meta .status-dot {
  background: var(--signal);
}

.page-faq .faq-banner-meta .status-tag--signal {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--white);
}

.page-faq .faq-banner-meta .status-tag--signal .status-dot {
  background: var(--white);
}

.page-faq .faq-banner-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 2px solid var(--line);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.3);
}

/* ===== 问题索引区 ===== */
.page-faq .faq-index {
  padding-top: 16px;
  padding-bottom: 16px;
}

.page-faq .faq-index-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  border-bottom: 2px solid var(--line);
  padding-bottom: 12px;
  margin-bottom: 22px;
}

.page-faq .faq-index-label {
  color: var(--signal);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.875rem;
}

.page-faq .faq-index-head .section-heading {
  margin: 0;
  font-size: 1.25rem;
}

.page-faq .faq-index-total {
  margin-left: auto;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.page-faq .faq-index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-index-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--white);
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
  color: var(--text);
  text-decoration: none;
  padding: 16px 20px;
  transition: border-color var(--ease), box-shadow var(--ease), transform var(--ease);
}

.page-faq .faq-index-card:hover,
.page-faq .faq-index-card:focus-visible {
  border-color: var(--signal);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 900;
  color: var(--signal);
  transition: transform var(--ease);
}

.page-faq .faq-index-card:hover .faq-index-num,
.page-faq .faq-index-card:focus-visible .faq-index-num {
  transform: translateX(4px);
}

.page-faq .faq-index-name {
  font-size: 1rem;
  font-weight: 700;
}

.page-faq .faq-index-count {
  margin-left: auto;
  background: var(--signal-soft);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: 4px 8px;
}

/* ===== FAQ 区块通用 ===== */
.page-faq .faq-section {
  padding-top: 52px;
  padding-bottom: 8px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-section-head {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  padding-left: 14px;
  border-left: 4px solid var(--signal);
  transition: background-color var(--ease);
}

.page-faq .faq-section:target .faq-section-head {
  background: var(--signal-soft);
}

.page-faq .faq-section-num {
  background: var(--space);
  color: var(--white);
  font-family: var(--font-mono);
  font-weight: 900;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background-color var(--ease);
}

.page-faq .faq-section:target .faq-section-num {
  background: var(--signal);
}

.page-faq .faq-section-titles h2 {
  margin: 0 0 8px;
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 800;
  color: var(--text);
}

.page-faq .faq-section-titles p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ===== 问答手风琴 ===== */
.page-faq .faq-accordion {
  display: grid;
  gap: 16px;
}

.page-faq .faq-item {
  background: var(--white);
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
  transition: border-color var(--ease), box-shadow var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--signal);
  box-shadow: var(--shadow-hover);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: stretch;
  cursor: pointer;
  list-style: none;
  margin: 0;
  padding: 0;
  border: 0;
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  min-height: 62px;
  flex-shrink: 0;
  background: var(--signal);
  color: var(--white);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9375rem;
  transition: background-color var(--ease), transform var(--ease);
}

.page-faq .faq-item[open] .faq-item-num {
  background: var(--space);
}

.page-faq .faq-item summary:hover .faq-item-num,
.page-faq .faq-item summary:focus-visible .faq-item-num {
  transform: translateX(4px);
}

.page-faq .faq-item-q {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 16px 18px;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-faq .faq-item-a {
  border-top: 2px solid var(--line);
  background: var(--panel);
  padding: 20px 20px 22px;
  color: var(--text);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.page-faq .faq-item[open] .faq-item-a {
  border-top-color: var(--signal);
}

.page-faq .faq-item-a p {
  margin: 0 0 12px;
}

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

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -2px;
}

/* ===== 登录流程说明 ===== */
.page-faq .faq-login-flow {
  margin-top: 34px;
  display: grid;
  grid-template-columns: 1fr;
  background: var(--panel);
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
}

.page-faq .faq-login-flow-copy {
  padding: 28px 26px;
}

.page-faq .faq-login-flow-label {
  display: block;
  color: var(--signal);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-faq .faq-login-flow h3 {
  margin: 10px 0 20px;
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--text);
}

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

.page-faq .faq-login-steps li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.page-faq .faq-login-steps span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  background: var(--signal);
  color: var(--white);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
}

.page-faq .faq-login-flow-media {
  min-height: 200px;
  background: var(--space);
  border-top: 2px solid var(--line);
}

.page-faq .faq-login-flow-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ===== 底部支持区 ===== */
.page-faq .faq-support {
  padding-top: 48px;
  padding-bottom: 80px;
}

.page-faq .faq-support-inner {
  display: flex;
  flex-direction: column;
  gap: 22px;
  background: var(--space);
  border: 2px solid var(--line);
  box-shadow: 8px 8px 0 rgba(10, 18, 32, 0.18);
  padding: 34px 30px;
}

.page-faq .faq-support-copy h2 {
  margin: 0 0 10px;
  color: var(--white);
  font-size: 1.625rem;
  font-weight: 800;
}

.page-faq .faq-support-copy p {
  margin: 0;
  max-width: 640px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.8;
}

.page-faq .faq-support-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .page-faq .faq-index-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .page-faq .faq-banner-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 40px;
    padding-bottom: 72px;
  }

  .page-faq .faq-banner h1 {
    font-size: clamp(2.1rem, 4vw, 3.75rem);
  }

  .page-faq .faq-login-flow {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-login-flow-media {
    min-height: 0;
    border-top: 0;
    border-left: 2px solid var(--line);
  }

  .page-faq .faq-login-flow-media img {
    height: 100%;
    min-height: 280px;
  }

  .page-faq .faq-support-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-index-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq .faq-section {
    padding-top: 64px;
  }

  .page-faq .faq-section-head {
    padding-left: 18px;
    gap: 20px;
  }

  .page-faq .faq-accordion {
    gap: 18px;
  }

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

  .page-faq .faq-item-a {
    padding: 24px 28px 26px;
    font-size: 0.9375rem;
  }

  .page-faq .faq-index-card {
    padding: 20px 22px;
  }
}