.page-faq {
  --faq-blue: #2C8FBF;
  --faq-green: #2E9B6B;
  --faq-yellow: #E6A817;
  --faq-red: #C04848;
  --faq-primary: #145A8A;
  --faq-ink: #0B0E11;
  --faq-snow: #F4F6F7;
  --faq-silver: #DDE5E9;
  --faq-gray: #9AA5B1;
}

.page-faq img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  color: #fff;
  padding: 44px 0 64px;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 18%, rgba(44, 143, 191, 0.45) 0%, transparent 55%),
    linear-gradient(135deg, #0B0E11 0%, #145A8A 58%, #0E4064 100%);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 5px;
  background: linear-gradient(90deg, #2C8FBF, #2E9B6B, #E6A817, #C04848, #145A8A);
}
.page-faq .faq-hero .breadcrumb {
  margin-bottom: 36px;
  color: rgba(255, 255, 255, 0.65);
}
.page-faq .faq-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
}
.page-faq .faq-hero .breadcrumb a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-hero .breadcrumb-separator {
  color: rgba(255, 255, 255, 0.4);
}
.page-faq .faq-hero .breadcrumb-current {
  color: rgba(255, 255, 255, 0.95);
}
.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}
.page-faq .faq-hero-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  margin: 0 0 18px;
}
.page-faq .faq-hero-bar {
  width: 34px;
  height: 3px;
  border-radius: 2px;
  background: var(--faq-yellow);
  flex-shrink: 0;
}
.page-faq .faq-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(1.75rem, 4vw, 2.7rem);
  font-weight: 800;
  line-height: 1.22;
  margin: 0 0 18px;
  max-width: 13em;
  letter-spacing: 0.01em;
}
.page-faq .faq-hero-lead {
  font-family: var(--font-body);
  font-size: 1.02rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
  max-width: 36em;
  margin: 0 0 30px;
}
.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.page-faq .faq-hero-action {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 999px;
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform var(--fast) var(--ease), box-shadow var(--fast) var(--ease), background var(--fast) var(--ease);
}
.page-faq .faq-hero-action-primary {
  background: var(--faq-yellow);
  color: var(--faq-ink);
  box-shadow: 0 4px 16px rgba(230, 168, 23, 0.35);
}
.page-faq .faq-hero-action-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 168, 23, 0.45);
}
.page-faq .faq-hero-action-primary:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}
.page-faq .faq-hero-action-ghost {
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
}
.page-faq .faq-hero-action-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}
.page-faq .faq-hero-action-ghost:focus-visible {
  outline: 3px solid var(--faq-yellow);
  outline-offset: 3px;
}
.page-faq .faq-hero-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 14px 44px rgba(11, 14, 17, 0.38);
}

/* ===== 分类索引 ===== */
.page-faq .faq-nav {
  background: var(--faq-snow);
  padding: 56px 0 64px;
  border-bottom: 1px solid var(--faq-silver);
}
.page-faq .faq-nav-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}
.page-faq .faq-nav-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.page-faq .faq-nav-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faq-primary);
  margin: 0 0 10px;
}
.page-faq .faq-nav h2 {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--faq-ink);
  margin: 0 0 12px;
  line-height: 1.25;
}
.page-faq .faq-nav-desc {
  font-family: var(--font-body);
  color: var(--faq-gray);
  line-height: 1.7;
  margin: 0 0 26px;
  max-width: 32em;
}
.page-faq .faq-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-nav-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: var(--faq-ink);
  font-family: var(--font-title);
  font-weight: 600;
  transition: box-shadow var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.page-faq .faq-nav-list a:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.page-faq .faq-nav-list a:focus-visible {
  outline: 3px solid var(--faq-blue);
  outline-offset: 1px;
}
.page-faq .faq-nav-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.page-faq .faq-dot-blue { background: var(--faq-blue); }
.page-faq .faq-dot-green { background: var(--faq-green); }
.page-faq .faq-dot-yellow { background: var(--faq-yellow); }
.page-faq .faq-dot-red { background: var(--faq-red); }
.page-faq .faq-dot-primary { background: var(--faq-primary); }
.page-faq .faq-nav-name {
  flex: 1;
}
.page-faq .faq-nav-total {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--faq-gray);
}

/* ===== FAQ 分区 ===== */
.page-faq .faq-section {
  padding: 56px 0;
  background:
    linear-gradient(135deg, rgba(44, 143, 191, 0.035) 0%, transparent 45%),
    var(--faq-snow);
  border-bottom: 1px solid var(--faq-silver);
}
.page-faq .faq-cat-upgrade { --faq-cat: var(--faq-blue); }
.page-faq .faq-cat-fit { --faq-cat: var(--faq-green); }
.page-faq .faq-cat-archive { --faq-cat: var(--faq-yellow); }
.page-faq .faq-cat-round { --faq-cat: var(--faq-red); }
.page-faq .faq-cat-security { --faq-cat: var(--faq-primary); }

.page-faq .faq-section-header {
  position: relative;
  padding-left: 24px;
  margin-bottom: 34px;
}
.page-faq .faq-section-flag {
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 7px;
  border-radius: 4px;
  background: var(--faq-cat);
}
.page-faq .faq-section-kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faq-cat);
  margin: 0 0 8px;
}
.page-faq .faq-section-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--faq-cat);
  flex-shrink: 0;
}
.page-faq .faq-section-header h2 {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--faq-ink);
  margin: 0 0 8px;
  line-height: 1.25;
}
.page-faq .faq-section-desc {
  font-family: var(--font-body);
  color: var(--faq-gray);
  line-height: 1.7;
  margin: 0;
}

/* ===== 折叠面板 ===== */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.page-faq .faq-item {
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border-left: 6px solid var(--faq-cat);
  overflow: hidden;
  transition: box-shadow var(--fast) var(--ease);
}
.page-faq .faq-item:hover {
  box-shadow: var(--shadow-md);
}
.page-faq .faq-q-heading {
  margin: 0;
}
.page-faq .faq-q-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-title);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--faq-ink);
  -webkit-appearance: none;
  appearance: none;
}
.page-faq .faq-q-toggle:focus-visible {
  outline: 3px solid var(--faq-cat);
  outline-offset: -3px;
  border-radius: var(--radius-sm);
}
.page-faq .faq-q-mark {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--faq-cat);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
}
.page-faq .faq-q-text {
  flex: 1;
}
.page-faq .faq-q-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  position: relative;
  transition: transform var(--slow) var(--ease);
}
.page-faq .faq-q-icon::before,
.page-faq .faq-q-icon::after {
  content: "";
  position: absolute;
  background: var(--faq-gray);
  border-radius: 1px;
  transition: background var(--fast) var(--ease);
}
.page-faq .faq-q-icon::before {
  width: 12px;
  height: 2px;
  left: 3px;
  top: 8px;
}
.page-faq .faq-q-icon::after {
  width: 2px;
  height: 12px;
  left: 8px;
  top: 3px;
}
.page-faq .faq-item[data-expanded="true"] .faq-q-icon {
  transform: rotate(45deg);
}
.page-faq .faq-item[data-expanded="true"] .faq-q-icon::before,
.page-faq .faq-item[data-expanded="true"] .faq-q-icon::after {
  background: var(--faq-cat);
}
.page-faq .faq-q-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--slow) var(--ease);
}
.page-faq .faq-item[data-expanded="true"] .faq-q-panel {
  max-height: 600px;
}
.page-faq .faq-q-answer {
  padding: 0 20px 22px 62px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.75;
  color: #3a444c;
}
.page-faq .faq-q-answer p {
  margin: 0 0 10px;
}
.page-faq .faq-q-answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-q-more {
  font-size: 0.86rem;
}
.page-faq .faq-q-more a {
  color: var(--faq-cat);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: text-decoration-color var(--fast) var(--ease);
}
.page-faq .faq-q-more a:hover {
  text-decoration-thickness: 2px;
}
.page-faq .faq-q-more a:focus-visible {
  outline: 2px solid var(--faq-cat);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ===== 联系引导区 ===== */
.page-faq .faq-help {
  position: relative;
  color: #fff;
  padding: 60px 0;
  background:
    radial-gradient(circle at 75% 80%, rgba(44, 143, 191, 0.28) 0%, transparent 48%),
    linear-gradient(135deg, #0B0E11 0%, #0E4064 100%);
}
.page-faq .faq-help::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--faq-blue), var(--faq-green), var(--faq-yellow), var(--faq-red));
}
.page-faq .faq-help-inner {
  display: flex;
  flex-direction: column;
  gap: 30px;
  align-items: flex-start;
}
.page-faq .faq-help h2 {
  font-family: var(--font-title);
  font-size: 1.6rem;
  font-weight: 800;
  margin: 0 0 12px;
  line-height: 1.25;
}
.page-faq .faq-help p {
  font-family: var(--font-body);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
  max-width: 38em;
}
.page-faq .faq-help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.page-faq .faq-help-btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 999px;
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform var(--fast) var(--ease), box-shadow var(--fast) var(--ease), background var(--fast) var(--ease);
}
.page-faq .faq-help-btn-solid {
  background: var(--faq-yellow);
  color: var(--faq-ink);
  box-shadow: 0 4px 16px rgba(230, 168, 23, 0.32);
}
.page-faq .faq-help-btn-solid:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 168, 23, 0.42);
}
.page-faq .faq-help-btn-solid:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}
.page-faq .faq-help-btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
}
.page-faq .faq-help-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}
.page-faq .faq-help-btn-ghost:focus-visible {
  outline: 3px solid var(--faq-yellow);
  outline-offset: 3px;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 52px 0 72px;
  }
  .page-faq .faq-hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
  }
  .page-faq .faq-nav {
    padding: 64px 0 72px;
  }
  .page-faq .faq-nav-grid {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 52px;
  }
  .page-faq .faq-section {
    padding: 64px 0;
  }
  .page-faq .faq-list {
    gap: 16px;
  }
  .page-faq .faq-q-toggle {
    padding: 20px 24px;
  }
  .page-faq .faq-q-answer {
    padding: 0 24px 24px 66px;
  }
  .page-faq .faq-help {
    padding: 64px 0;
  }
  .page-faq .faq-help-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q-icon,
  .page-faq .faq-q-panel,
  .page-faq .faq-hero-action,
  .page-faq .faq-help-btn,
  .page-faq .faq-nav-list a {
    transition: none;
  }
}