.page-faq{
  --faq-sidebar-w: 264px;
  --faq-gap: clamp(1.5rem, 3vw, 3rem);
  scroll-behavior: smooth;
}
.page-faq .faq-hero{
  position: relative;
  background: linear-gradient(135deg, var(--bg-deep) 0%, var(--bg-main) 60%, #0E2A4A 100%);
  padding: clamp(1.5rem, 4vw, 3.5rem) 0 0;
  overflow: hidden;
}
.page-faq .faq-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, transparent 0px, transparent 26px, rgba(255,255,255,0.018) 26px, rgba(255,255,255,0.018) 27px);
  pointer-events: none;
  z-index: 0;
}
.page-faq .faq-hero::after{
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 42%;
  height: 100%;
  background: linear-gradient(135deg, transparent 0%, rgba(0,212,255,0.07) 100%);
  clip-path: polygon(40% 0, 100% 0, 100% 100%, 10% 100%);
  z-index: 0;
}
.page-faq .faq-hero-inner{
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: center;
}
.page-faq .faq-hero-copy{
  padding-bottom: 2rem;
}
.page-faq .breadcrumb{
  margin-bottom: 0.75rem;
  font-size: var(--text-small);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-sub);
}
.page-faq .breadcrumb a{
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 0.2s;
}
.page-faq .breadcrumb a:hover{
  color: var(--accent-orange);
}
.page-faq .breadcrumb .sep{
  margin: 0 0.5em;
  color: var(--text-sub);
}
.page-faq .faq-hero-title{
  font-family: var(--font-head);
  font-size: var(--text-h1);
  line-height: 1.12;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0.75rem 0 1rem;
  color: var(--text-main);
  max-width: 13em;
}
.page-faq .faq-hero-desc{
  color: var(--text-sub);
  max-width: 44em;
  line-height: 1.7;
  margin: 0;
}
.page-faq .faq-hero-art{
  position: relative;
  border-left: 4px solid var(--accent-orange);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-faq .faq-hero-art img{
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0 var(--radius) var(--radius) 0;
  border: 1px solid var(--border-color);
  border-left: none;
  box-shadow: 0 24px 64px rgba(0,0,0,0.35);
}

.page-faq .faq-search-section{
  padding: clamp(1.5rem, 3vw, 2.75rem) 0 1.5rem;
}
.page-faq .faq-search-bar{
  display: flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 640px;
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: linear-gradient(var(--bg-panel), var(--bg-panel)) padding-box,
              linear-gradient(90deg, var(--accent-orange), var(--accent-blue)) border-box;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
}
.page-faq .faq-search-icon{
  color: var(--accent-orange);
  flex-shrink: 0;
}
.page-faq .faq-search-input{
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 1rem;
}
.page-faq .faq-search-input::placeholder{
  color: var(--text-sub);
}
.page-faq .faq-search-note{
  color: var(--text-sub);
  font-size: var(--text-small);
  margin-top: 0.75rem;
  line-height: 1.5;
}

.page-faq .faq-layout{
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding-top: 1rem;
  padding-bottom: 4rem;
  align-items: start;
}

.page-faq .faq-sidebar{
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}
.page-faq .faq-sidebar::before{
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--accent-orange), var(--accent-blue));
}
.page-faq .faq-sidebar-label{
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: var(--text-small);
  color: var(--accent-orange);
  margin-bottom: 1rem;
}
.page-faq .faq-sidebar-list{
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.page-faq .faq-sidebar-list li{
  margin: 0;
}
.page-faq .faq-sidebar-list a{
  display: block;
  padding: 0.4rem 0.8rem;
  color: var(--text-sub);
  text-decoration: none;
  font-size: var(--text-small);
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.page-faq .faq-sidebar-list a:hover{
  color: var(--accent-orange);
  border-color: var(--accent-orange);
  background: rgba(255,184,0,0.06);
}
.page-faq .faq-sidebar-help{
  border-top: 1px dashed var(--border-light);
  padding-top: 1rem;
  text-align: center;
  display: none;
}
.page-faq .faq-sidebar-help .coord-num{
  display: block;
  margin-bottom: 0.4rem;
  font-size: 1.6rem;
}
.page-faq .faq-sidebar-help p{
  color: var(--text-sub);
  font-size: var(--text-small);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.page-faq .faq-main{
  min-width: 0;
}
.page-faq .faq-cat-title{
  font-family: var(--font-head);
  font-size: var(--text-h3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 2.25rem 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border-color);
  scroll-margin-top: calc(var(--header-h) + 1rem);
  position: relative;
}
.page-faq .faq-cat-title::after{
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 88px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-blue));
}
.page-faq .faq-cat-title:first-of-type{
  margin-top: 0;
}
.page-faq .faq-cat-title .coord-num{
  color: var(--accent-blue);
  font-size: 0.85em;
  -webkit-text-stroke: 1px rgba(0,212,255,0.35);
}

.page-faq .faq-item{
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.page-faq .faq-item:hover{
  border-color: var(--border-light);
  box-shadow: 0 6px 24px rgba(0,0,0,0.2);
}
.page-faq .faq-item summary{
  cursor: pointer;
  list-style: none;
  padding: 1rem 1.25rem;
  font-weight: 500;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: color 0.2s;
}
.page-faq .faq-item summary::-webkit-details-marker{
  display: none;
}
.page-faq .faq-item summary::after{
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--accent-orange);
  flex-shrink: 0;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.page-faq .faq-item[open] summary::after{
  content: "−";
  transform: rotate(180deg);
}
.page-faq .faq-item summary:hover{
  color: var(--accent-orange);
}
.page-faq .faq-item[open]{
  border-color: var(--accent-orange);
  box-shadow: 0 6px 24px rgba(255,184,0,0.06);
}
.page-faq .faq-item[open] summary{
  border-bottom: 1px solid var(--border-color);
}
.page-faq .faq-answer{
  padding: 0.9rem 1.25rem 1.25rem;
  color: var(--text-sub);
  line-height: 1.65;
}
.page-faq .faq-answer p{
  margin: 0;
}
.page-faq .faq-answer p + p{
  margin-top: 0.75rem;
}
.page-faq .faq-answer a{
  color: var(--accent-blue);
  text-decoration: none;
}
.page-faq .faq-answer a:hover{
  color: var(--accent-orange);
}
.page-faq .faq-answer img{
  display: block;
  max-width: 100%;
  height: auto;
  margin-top: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.page-faq .faq-empty{
  display: none;
  text-align: center;
  padding: 2.5rem 1.5rem;
  color: var(--text-sub);
  font-size: 0.95rem;
  border: 1px dashed var(--border-light);
  border-radius: var(--radius);
  margin-top: 1.5rem;
}
.page-faq .faq-empty.is-visible{
  display: block;
}

@media (min-width: 640px){
  .page-faq .faq-sidebar-list{
    display: block;
  }
  .page-faq .faq-sidebar-list li + li{
    border-top: 1px solid var(--border-color);
  }
  .page-faq .faq-sidebar-list a{
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0.75rem 0.5rem;
    font-size: 0.9rem;
    display: block;
    transition: color 0.2s, padding-left 0.2s;
  }
  .page-faq .faq-sidebar-list a:hover{
    background: transparent;
    padding-left: 0.75rem;
  }
  .page-faq .faq-sidebar-help{
    display: block;
  }
}

@media (min-width: 960px){
  .page-faq .faq-hero-inner{
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3rem;
  }
  .page-faq .faq-hero-copy{
    padding-bottom: 3rem;
  }
  .page-faq .faq-layout{
    grid-template-columns: var(--faq-sidebar-w) 1fr;
    gap: var(--faq-gap);
  }
  .page-faq .faq-sidebar{
    position: sticky;
    top: calc(var(--header-h) + 1rem);
  }
  .page-faq .faq-cat-title{
    margin-top: 3rem;
  }
}