/* ===== 帮助中心页面专属样式 ===== */
.page-faq {
  --faq-border: 3px solid var(--color-ink);
  --faq-shadow: var(--shadow-brutal);
  --faq-paper-border: 2px solid var(--color-paper);
  background: var(--color-bg);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin: 0 0 2rem;
  font-size: 0.85rem;
}

.page-faq .breadcrumb-item {
  color: var(--color-mist);
  text-decoration: none;
}

.page-faq .breadcrumb-item:first-child {
  color: var(--color-gold);
}

/* Hero 区域 */
.page-faq .faq-hero {
  background: var(--color-pitch-dark);
  border-bottom: 4px solid var(--color-gold);
  padding: 2.5rem 0 2rem;
  color: var(--color-bg);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  align-items: center;
}

.page-faq .faq-hero-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-gold);
  border: 1px solid var(--color-gold);
  padding: 0.3rem 0.6rem;
  margin-bottom: 1rem;
}

.page-faq .faq-hero-title {
  margin: 0 0 1rem;
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-bg);
}

.page-faq .faq-hero-lead {
  margin: 0 0 1.25rem;
  color: rgba(244, 245, 247, 0.78);
  font-size: 0.95rem;
  line-height: 1.8;
}

.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  max-width: 560px;
  background: var(--color-bg);
  border: var(--faq-border);
  box-shadow: var(--faq-shadow);
  padding: 0.5rem 0.9rem;
  color: var(--color-pitch);
}

.page-faq .faq-search-icon {
  flex: 0 0 auto;
}

.page-faq .faq-search-input {
  -webkit-appearance: none;
  appearance: none;
  border: 0;
  border-radius: 0;
  background: transparent;
  width: 100%;
  padding: 0.45rem 0;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-ink);
  outline: none;
}

.page-faq .faq-search-input::placeholder {
  color: var(--color-mist);
}

.page-faq .faq-hero-figure {
  position: relative;
  margin: 0;
  background: var(--color-paper);
  border: var(--faq-border);
  box-shadow: var(--faq-shadow);
}

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

/* 状态条 */
.page-faq .faq-status {
  background: var(--color-paper);
  border-bottom: 2px solid rgba(17, 24, 32, 0.12);
}

.page-faq .faq-status-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  background: rgba(17, 24, 32, 0.1);
  gap: 1px;
}

.page-faq .faq-status-item {
  background: var(--color-paper);
  padding: 1.25rem 1rem;
  text-align: center;
}

.page-faq .faq-status-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-pitch);
  margin-bottom: 0.5rem;
}

.page-faq .faq-status-label {
  font-size: 0.75rem;
  color: var(--color-charcoal);
  letter-spacing: 0.02em;
}

/* 双栏布局 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-top: 2rem;
  padding-bottom: 3rem;
}

.page-faq .faq-toc-col {
  min-width: 0;
}

.page-faq .faq-toc {
  border: var(--faq-border);
  background: var(--color-bg);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-toc-title {
  margin: 0;
  padding: 0.9rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--color-pitch);
  color: var(--color-bg);
}

.page-faq .faq-toc-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-ink);
  text-decoration: none;
  border-left: 4px solid transparent;
  border-bottom: 1px solid rgba(17, 24, 32, 0.08);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.page-faq .faq-toc-link:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-toc-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-gold-deep);
}

.page-faq .faq-toc-link:hover,
.page-faq .faq-toc-link.is-active {
  border-left-color: var(--color-gold);
  background: rgba(212, 175, 55, 0.1);
}

.page-faq .faq-toc-note {
  margin: 1rem 0 0;
  padding: 0.9rem 1rem;
  border: 2px dashed var(--color-gold-deep);
  background: var(--color-paper);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-charcoal);
}

.page-faq .faq-toc-more {
  display: inline-block;
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--color-pitch);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* 内容区与章节 */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-section {
  margin-bottom: 3rem;
}

.page-faq .faq-section-head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  border-bottom: 3px solid var(--color-ink);
  padding-bottom: 0.6rem;
  margin-bottom: 1.25rem;
}

.page-faq .faq-section-num {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-gold-deep);
}

.page-faq .faq-section-title {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.2;
  font-weight: 800;
  color: var(--color-ink);
}

.page-faq .faq-section-note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--color-mist);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

/* 问答卡片 */
.page-faq .faq-card {
  border: var(--faq-border);
  background: #ffffff;
  box-shadow: var(--faq-shadow);
  margin-bottom: 2rem;
}

.page-faq .faq-item {
  border-bottom: 1px solid rgba(17, 24, 32, 0.12);
}

.page-faq .faq-item:last-child {
  border-bottom: 0;
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  list-style: none;
  cursor: pointer;
  padding: 1.1rem 1.2rem;
  background: #ffffff;
  transition: background var(--transition-fast);
}

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

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

.page-faq .faq-item summary:hover {
  background: rgba(212, 175, 55, 0.08);
}

.page-faq .faq-item[open] summary {
  background: var(--color-bg);
}

.page-faq .faq-q-num {
  flex: 0 0 auto;
  padding: 0.15rem 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-bg);
  background: var(--color-pitch);
}

.page-faq .faq-q-text {
  flex: 1 1 auto;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-ink);
}

.page-faq .faq-q-indicator {
  flex: 0 0 auto;
  position: relative;
  width: 1.75rem;
  height: 1.75rem;
  border: 2px solid var(--color-gold-deep);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.page-faq .faq-q-indicator::before,
.page-faq .faq-q-indicator::after {
  content: "";
  position: absolute;
  background: var(--color-gold-deep);
}

.page-faq .faq-q-indicator::before {
  width: 10px;
  height: 2px;
}

.page-faq .faq-q-indicator::after {
  width: 2px;
  height: 10px;
}

.page-faq .faq-item[open] .faq-q-indicator::after {
  display: none;
}

.page-faq .faq-a {
  padding: 0.2rem 1.2rem 1.2rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--color-charcoal);
}

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

.page-faq .faq-a a {
  color: var(--color-pitch);
  text-decoration-color: var(--color-gold);
  text-underline-offset: 3px;
}

.page-faq .faq-inline-code {
  padding: 0.1rem 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--color-pitch);
  background: var(--color-paper);
}

/* 设备兼容图片 */
.page-faq .faq-device-figure {
  margin: 1.25rem;
  border: var(--faq-paper-border);
  background: var(--color-paper);
}

.page-faq .faq-device-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure-caption {
  padding: 0.6rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-charcoal);
}

/* 联系信息块 */
.page-faq .faq-contact-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  border: var(--faq-border);
  background: var(--color-paper);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-contact-info {
  flex: 1 1 240px;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(17, 24, 32, 0.12);
}

.page-faq .faq-contact-label {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-mist);
}

.page-faq .faq-contact-email,
.page-faq .faq-contact-tel {
  color: var(--color-pitch);
  text-decoration-color: var(--color-gold);
  font-size: 1rem;
  word-break: break-all;
}

.page-faq .faq-contact-email {
  font-family: var(--font-mono);
}

.page-faq .faq-contact-btn {
  margin: 1.25rem;
  text-decoration: none;
  text-align: center;
}

/* 桌面端增强 */
@media (min-width: 992px) {
  .page-faq .faq-hero {
    padding: 4rem 0 3.5rem;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
  }

  .page-faq .faq-hero-title {
    font-size: 2.55rem;
    line-height: 1.2;
  }

  .page-faq .faq-status-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq .faq-status-num {
    font-size: 1.75rem;
  }

  .page-faq .faq-layout {
    grid-template-columns: 280px 1fr;
    gap: 2.5rem;
    padding-top: 3rem;
    padding-bottom: 4rem;
  }

  .page-faq .faq-toc-col {
    position: sticky;
    top: 1.5rem;
    align-self: start;
  }

  .page-faq .faq-section-title {
    font-size: 1.7rem;
  }

  .page-faq .faq-contact-info {
    border-bottom: 0;
  }

  .page-faq .faq-contact-info + .faq-contact-info {
    border-left: 1px solid rgba(17, 24, 32, 0.12);
  }

  .page-faq .faq-contact-btn {
    margin: 0 1.5rem 0 0.5rem;
  }
}