/* ===== 页面作用域：.page-faq ===== */
.page-faq {
  --faq-accent: #39FF14;
  --faq-warn: #FF6A00;
  --faq-cut: 16px;
  background: var(--primary-bg);
  color: var(--text-primary);
  overflow-x: hidden;
}

/* ---------- Hero 区域 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 32px 0 48px;
  background:
    radial-gradient(circle at 82% 22%, rgba(57, 255, 20, 0.08) 0%, transparent 42%),
    linear-gradient(145deg, var(--secondary-bg) 0%, var(--primary-bg) 68%);
}

.page-faq .faq-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 100%;
  background: var(--secondary-bg);
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
  z-index: 0;
}

.page-faq .faq-hero-gridlines {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(57, 255, 20, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to right, black, transparent 75%);
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 32px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.page-faq .breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.25s ease;
}

.page-faq .breadcrumb a:hover {
  color: var(--accent-green);
}

.page-faq .breadcrumb-sep {
  color: var(--accent-orange);
}

/* Hero 网格 */
.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}

.page-faq .faq-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--accent-green);
  text-transform: uppercase;
}

.page-faq .faq-eyebrow-dot {
  width: 10px;
  height: 10px;
  background: var(--accent-orange);
  transform: rotate(45deg);
  flex: 0 0 auto;
}

.page-faq .faq-hero-text h1 {
  margin: 0 0 18px;
  font-family: var(--font-headline);
  font-size: clamp(2rem, 5.5vw, 4rem);
  line-height: 1.06;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

.page-faq .faq-hero-text .faq-h1-sub {
  display: block;
  color: var(--accent-green);
  -webkit-text-stroke: 0 transparent;
  text-shadow: 0 0 24px rgba(57, 255, 20, 0.35);
}

.page-faq .faq-hero-desc {
  max-width: 560px;
  margin: 0 0 24px;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* 搜索面板 */
.page-faq .faq-search {
  max-width: 560px;
}

.page-faq .faq-search-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.page-faq .faq-search-box {
  display: flex;
  align-items: center;
  background: var(--primary-bg);
  border: 2px solid var(--accent-green);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  padding: 4px 16px 4px 4px;
  transition: box-shadow 0.3s ease;
}

.page-faq .faq-search-box:focus-within {
  box-shadow: 0 0 0 4px rgba(57, 255, 20, 0.14);
}

.page-faq .faq-search-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 12px 8px 12px 16px;
}

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

.page-faq .faq-search-icon {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--accent-green);
  font-weight: 700;
  padding: 4px 2px;
}

.page-faq .faq-search-tips {
  margin: 10px 0 0;
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Hero 图片 */
.page-faq .faq-hero-figure {
  margin: 0;
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
  display: block;
}

/* ---------- 分类导航 ---------- */
.page-faq .faq-cat-strip {
  background: var(--section-alt);
  padding: 36px 0;
  border-top: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
}

.page-faq .faq-cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-faq .faq-cat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 18px;
  background: var(--secondary-bg);
  border: 1px solid var(--border-line);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  text-decoration: none;
  color: var(--text-primary);
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.page-faq .faq-cat-card:hover {
  background: var(--highlight-bg);
  border-color: var(--accent-green);
  transform: translateY(-2px);
}

.page-faq .faq-cat-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-orange);
  letter-spacing: 0.1em;
}

.page-faq .faq-cat-name {
  font-family: var(--font-headline);
  font-size: 1.3rem;
  line-height: 1.2;
}

.page-faq .faq-cat-desc {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.page-faq .faq-cat-arrow {
  position: absolute;
  top: 14px;
  right: 18px;
  font-size: 1.1rem;
  color: var(--accent-green);
  opacity: 0.75;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.page-faq .faq-cat-card:hover .faq-cat-arrow {
  transform: rotate(45deg);
  opacity: 1;
}

.page-faq .faq-cat-img {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 20px;
  object-fit: cover;
  border: 1px solid var(--border-line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

/* ---------- 主区域 ---------- */
.page-faq .faq-main-section {
  padding: 44px 0 56px;
  background: linear-gradient(180deg, var(--primary-bg) 0%, var(--section-alt) 100%);
}

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

.page-faq .faq-content {
  flex: 1;
  min-width: 0;
}

/* 分组 */
.page-faq .faq-group {
  margin-bottom: 40px;
}

.page-faq .faq-group-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-orange);
}

.page-faq .faq-group-num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-orange);
  background: rgba(255, 106, 0, 0.12);
  padding: 8px 12px;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.page-faq .faq-group-heading h2 {
  font-family: var(--font-headline);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  line-height: 1.2;
  margin: 0 0 4px;
}

.page-faq .faq-group-heading p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ---------- 手风琴项目 ---------- */
.page-faq .faq-item {
  position: relative;
  margin-bottom: 12px;
  border: 1px solid var(--border-line);
  background: var(--secondary-bg);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.page-faq .faq-item[open] {
  background: var(--highlight-bg);
  border-color: var(--accent-green);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.5;
}

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

.page-faq .faq-q-icon {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-orange);
  color: #ffffff;
  font-family: var(--font-headline);
  font-size: 1.1rem;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

.page-faq .faq-q-text {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-q-toggle {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent-green);
}

.page-faq .faq-q-toggle::before {
  content: '+';
}

.page-faq .faq-item[open] .faq-q-toggle::before {
  content: '−';
}

.page-faq .faq-a {
  display: none;
  padding: 4px 20px 20px;
  animation: faqFadeIn 0.35s ease;
}

.page-faq .faq-item[open] .faq-a {
  display: block;
  border-left: 3px solid var(--accent-green);
  background: rgba(57, 255, 20, 0.06);
  margin: 0 16px 16px;
  padding: 14px 18px;
}

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

.page-faq .faq-a p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-faq .faq-version {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(57, 255, 20, 0.15);
  color: var(--accent-green);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95em;
  border: 1px solid rgba(57, 255, 20, 0.4);
}

/* ---------- 侧边栏 ---------- */
.page-faq .faq-sidebar {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-faq .faq-side-card {
  background: var(--secondary-bg);
  border: 1px solid var(--border-line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  padding: 24px 22px;
}

.page-faq .faq-side-card h3 {
  font-family: var(--font-headline);
  font-size: 1.2rem;
  line-height: 1.3;
  margin: 0 0 10px;
}

.page-faq .faq-side-card p {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.page-faq .faq-side-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--accent-orange);
  margin-bottom: 8px;
  padding: 4px 8px;
  background: rgba(255, 106, 0, 0.1);
  border-left: 2px solid var(--accent-orange);
}

.page-faq .faq-contact-card {
  background: linear-gradient(160deg, var(--secondary-bg) 0%, rgba(57, 255, 20, 0.08) 100%);
}

.page-faq .faq-contact-card .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-green);
  color: var(--primary-bg);
  font-family: var(--font-headline);
  font-size: 1rem;
  padding: 10px 20px;
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: background 0.3s ease, transform 0.3s ease;
}

.page-faq .faq-contact-card .btn:hover {
  background: #a6ff8a;
  transform: translateY(-2px);
}

.page-faq .faq-doc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-doc-list li {
  margin-bottom: 6px;
}

.page-faq .faq-doc-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  text-decoration: none;
  border-bottom: 1px dashed var(--border-line);
  transition: color 0.25s ease, border-color 0.25s ease;
}

.page-faq .faq-doc-list a::before {
  content: '▸';
  color: var(--accent-green);
  font-size: 0.85rem;
}

.page-faq .faq-doc-list a:hover {
  color: var(--accent-green);
  border-color: var(--accent-green);
}

.page-faq .faq-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 12px;
}

.page-faq .faq-stats li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  background: rgba(13, 42, 94, 0.6);
  border-left: 3px solid var(--accent-green);
}

.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-green);
  line-height: 1.2;
}

.page-faq .faq-stat-label {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ---------- 信任收尾 ---------- */
.page-faq .faq-trust {
  background: var(--section-alt);
  padding: 44px 0;
  border-top: 1px solid var(--border-line);
}

.page-faq .faq-trust-inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
}

.page-faq .faq-trust-code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--accent-orange);
  margin: 0 0 8px;
}

.page-faq .faq-trust-text h2 {
  font-family: var(--font-headline);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin: 0 0 10px;
  color: var(--accent-green);
}

.page-faq .faq-trust-text p {
  margin: 0;
  max-width: 680px;
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-faq .faq-trust-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.page-faq .btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 2px solid var(--accent-green);
  color: var(--accent-green);
  font-family: var(--font-headline);
  font-size: 1rem;
  padding: 10px 22px;
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: background 0.3s ease, color 0.3s ease;
}

.page-faq .btn-outline:hover {
  background: var(--accent-green);
  color: var(--primary-bg);
}

.page-faq .faq-trust-link {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 1px dashed var(--border-line);
  transition: color 0.25s ease, border-color 0.25s ease;
}

.page-faq .faq-trust-link:hover {
  color: var(--accent-orange);
  border-color: var(--accent-orange);
}

/* ---------- 贺兰山轮廓 ---------- */
.page-faq .faq-mountain {
  height: 90px;
  overflow: hidden;
  background: var(--section-alt);
  margin-top: 0;
}

.page-faq .faq-mountain svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* ========== 桌面端媒体查询 ========== */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 40px 0 64px;
  }

  .page-faq .faq-hero-figure img {
    height: 280px;
  }

  .page-faq .faq-cat-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  .page-faq .faq-cat-card {
    padding: 24px 20px;
  }

  .page-faq .faq-cat-name {
    font-size: 1.4rem;
  }

  .page-faq .faq-cat-img {
    margin-top: 24px;
  }

  .page-faq .faq-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 40px;
  }

  .page-faq .faq-content {
    flex: 1;
  }

  .page-faq .faq-sidebar {
    width: 320px;
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-trust {
    padding: 56px 0;
  }

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

  .page-faq .faq-trust-actions {
    flex-shrink: 0;
  }

  .page-faq .faq-mountain {
    height: 120px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
  }

  .page-faq .faq-hero-figure img {
    height: 300px;
  }

  .page-faq .faq-mountain {
    height: 140px;
  }
}

/* ========== 窄屏保护 ========== */
@media (max-width: 420px) {
  .page-faq .faq-cat-grid {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-cat-card {
    padding: 16px 14px;
  }

  .page-faq .faq-search-box {
    flex-wrap: wrap;
  }

  .page-faq .faq-search-input {
    min-width: 200px;
  }

  .page-faq .faq-sidebar {
    width: 100%;
  }

  .page-faq .faq-a {
    padding: 2px 10px 10px;
  }
}