/* ========== 帮助中心页面专属样式 · page-faq ========== */
.page-faq {
  --faq-orange: #ff7a1a;
  --faq-blue: #3b6ea5;
  --faq-green: #2effb0;
  --faq-gray: #8fa3c7;
  background:
    radial-gradient(circle at 88% 6%, rgba(255, 122, 26, 0.13), transparent 360px),
    linear-gradient(180deg, #0d2a44 0%, #0a0e1a 420px);
  color: var(--near-white);
}

.page-faq .faq-breadcrumb-wrap {
  padding: 20px 0 0;
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-faq .breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .breadcrumb__link:hover {
  color: var(--orange);
}

.page-faq .breadcrumb__current {
  color: var(--orange);
}

/* hero */
.page-faq .faq-hero {
  padding: 40px 0 32px;
}

.page-faq .faq-hero__grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 16px;
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--near-white);
}

.page-faq .faq-hero__lead {
  max-width: 640px;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-search {
  position: relative;
  max-width: 560px;
  margin-top: 28px;
}

.page-faq .faq-search__icon {
  position: absolute;
  left: 18px;
  top: 50%;
  width: 20px;
  height: 20px;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

.page-faq .faq-search__input {
  display: block;
  box-sizing: border-box;
  width: 100%;
  height: 56px;
  padding: 0 20px 0 50px;
  font-size: 15px;
  font-family: var(--font-sans);
  color: var(--near-white);
  background: rgba(19, 28, 46, 0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-search__input::placeholder {
  color: var(--muted);
}

.page-faq .faq-search__input:focus {
  border-color: var(--faq-orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.15);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 480px;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.25);
}

/* FAQ 错落卡片墙 */
.page-faq .faq-wall {
  padding: 24px 0 16px;
}

.page-faq .faq-wall__grid {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.page-faq .faq-group {
  --group-accent: var(--faq-gray);
}

.page-faq .faq-group--calendar {
  --group-accent: var(--faq-orange);
}

.page-faq .faq-group--team {
  --group-accent: var(--faq-blue);
}

.page-faq .faq-group--download {
  --group-accent: var(--faq-green);
}

.page-faq .faq-group--sync {
  --group-accent: var(--faq-gray);
}

.page-faq .faq-group__header {
  margin-bottom: 20px;
  padding-left: 16px;
  border-left: 3px solid var(--group-accent);
}

.page-faq .faq-group__index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--group-accent);
}

.page-faq .faq-group__title {
  margin: 8px 0 10px;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--near-white);
}

.page-faq .faq-group__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-group__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* FAQ 卡片 */
.page-faq .faq-item {
  background: rgba(19, 28, 46, 0.55);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.15s ease, background 0.25s ease;
}

.page-faq .faq-item:hover {
  border-color: var(--group-accent);
  background: rgba(19, 28, 46, 0.82);
  transform: translateY(-2px);
}

.page-faq .faq-item:active {
  transform: scale(0.98);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px;
  cursor: pointer;
  list-style: none;
  -webkit-tap-highlight-color: transparent;
}

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

.page-faq .faq-item__dot {
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--group-accent);
}

.page-faq .faq-item__q {
  flex: 1;
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--near-white);
}

.page-faq .faq-item__icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 2px;
  background: var(--muted);
  transition: background 0.2s ease, transform 0.25s ease;
}

.page-faq .faq-item__icon::before {
  width: 12px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__icon::after {
  width: 2px;
  height: 12px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item:hover .faq-item__icon::before,
.page-faq .faq-item:hover .faq-item__icon::after {
  background: var(--group-accent);
}

.page-faq details[open].faq-item .faq-item__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  background: var(--group-accent);
}

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

.page-faq .faq-item__a {
  display: none;
  color: var(--muted);
}

.page-faq details[open].faq-item .faq-item__a {
  display: block;
  animation: faq-panel-in 0.3s ease;
}

.page-faq .faq-item__a p {
  margin: 0;
  padding: 0 18px 18px 42px;
  font-size: 14px;
  line-height: 1.75;
}

.page-faq .faq-item__a a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s ease;
}

.page-faq .faq-item__a a:hover {
  color: var(--faq-orange);
}

/* 页面底部支持区 */
.page-faq .faq-outro {
  padding: 48px 0 72px;
}

.page-faq .faq-outro__card {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 32px 24px;
  background: linear-gradient(135deg, #0d2a44 0%, #131c2e 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.page-faq .faq-outro__title {
  margin: 12px 0 10px;
  font-size: 26px;
  font-weight: 800;
  color: var(--near-white);
}

.page-faq .faq-outro__text {
  max-width: 560px;
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-outro__media img {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: var(--radius);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq details[open].faq-item .faq-item__a {
    animation: none;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 64px 0 56px;
  }

  .page-faq .faq-hero__grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
  }

  .page-faq .faq-hero__media {
    justify-self: end;
  }

  .page-faq .faq-hero__media img {
    max-width: 480px;
  }

  .page-faq .faq-wall {
    padding: 32px 0 24px;
  }

  .page-faq .faq-wall__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px 48px;
    align-items: start;
  }

  .page-faq .faq-group--team {
    grid-column: 2;
    grid-row: 1;
    margin-top: 72px;
  }

  .page-faq .faq-group--download {
    grid-column: 1;
    grid-row: 2;
    margin-top: 24px;
  }

  .page-faq .faq-group--sync {
    grid-column: 2;
    grid-row: 2;
    margin-top: 48px;
  }

  .page-faq .faq-group__title {
    font-size: 28px;
  }

  .page-faq .faq-item__q {
    font-size: 16px;
  }

  .page-faq .faq-outro {
    padding: 64px 0 96px;
  }

  .page-faq .faq-outro__card {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    padding: 48px 56px;
  }

  .page-faq .faq-outro__media {
    flex-shrink: 0;
  }
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}