.page-faq {
  --faq-line: rgba(168, 184, 208, 0.12);
  --faq-grid: rgba(168, 184, 208, 0.05);
  position: relative;
  padding-top: 88px;
  overflow-x: clip;
  color: var(--moon);
  background:
    radial-gradient(900px 480px at 88% -8%, rgba(57, 255, 136, 0.08), transparent 60%),
    radial-gradient(700px 360px at 2% 28%, rgba(255, 122, 26, 0.06), transparent 55%),
    var(--void);
}

.page-faq__wrap {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

/* ========== 面包屑 ========== */
.page-faq__breadcrumb {
  padding: 0 0 12px;
}

.page-faq__breadcrumb-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fog);
}

.page-faq__breadcrumb a {
  color: var(--fog);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq__breadcrumb a:hover,
.page-faq__breadcrumb a:focus-visible {
  color: var(--lime);
}

.page-faq__breadcrumb span[aria-current="page"] {
  color: var(--moon);
}

/* ========== 首屏 ========== */
.page-faq__hero {
  position: relative;
  isolation: isolate;
  padding: 40px 0 72px;
}

.page-faq__hero::before {
  content: "";
  position: absolute;
  top: 20px;
  right: -120px;
  width: 380px;
  height: 520px;
  background: linear-gradient(180deg, rgba(57, 255, 136, 0.1), rgba(255, 122, 26, 0.05));
  clip-path: polygon(20% 0, 100% 0, 80% 100%, 0 100%);
  transform: rotate(-4deg);
  z-index: -1;
  pointer-events: none;
}

.page-faq__hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(var(--faq-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(90deg, transparent 55%, #000 100%);
}

.page-faq__hero-grid {
  display: grid;
  gap: 36px;
  position: relative;
  z-index: 1;
}

.page-faq__hero-left {
  min-width: 0;
}

.page-faq__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  padding: 6px 12px;
  border: 1px solid rgba(57, 255, 136, 0.28);
  border-radius: 100px;
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-faq__eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 10px rgba(57, 255, 136, 0.75);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--title-font);
  font-size: clamp(27px, 5.4vw, 48px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-faq__hero-lead {
  max-width: 56ch;
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--fog);
}

/* 首屏示意图 */
.page-faq__hero-media {
  position: relative;
  margin: 0;
  border: 1px solid rgba(168, 184, 208, 0.14);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--abyss);
  box-shadow: 0 18px 40px rgba(4, 10, 24, 0.45);
}

.page-faq__hero-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq__hero-media figcaption {
  position: absolute;
  bottom: 12px;
  left: 12px;
  padding: 6px 10px;
  border-left: 3px solid var(--ember);
  background: rgba(10, 20, 40, 0.74);
  font-family: var(--mono-font);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--moon);
}

/* ========== 分类面板 ========== */
.page-faq__catblock {
  position: relative;
  align-self: start;
  padding: 28px 20px 22px;
  border: 1px solid rgba(168, 184, 208, 0.12);
  border-radius: var(--radius);
  background: rgba(16, 26, 48, 0.72);
  backdrop-filter: blur(6px);
}

.page-faq__catblock::before {
  content: "";
  position: absolute;
  top: 0;
  left: 28px;
  width: 48px;
  height: 4px;
  background: var(--lime);
  transform: skewX(-14deg);
}

.page-faq__catblock-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--mono-font);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fog);
}

.page-faq__catblock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 12px rgba(57, 255, 136, 0.7);
}

.page-faq__catgrid {
  display: grid;
  gap: 12px;
}

.page-faq__cattile {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto;
  align-items: center;
  column-gap: 14px;
  row-gap: 8px;
  padding: 18px 16px;
  border: 1px solid rgba(168, 184, 208, 0.1);
  border-radius: 10px;
  background: rgba(22, 35, 63, 0.42);
  text-decoration: none;
  color: inherit;
  transition:
    background 0.25s var(--ease),
    border-color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.page-faq__cattile:hover,
.page-faq__cattile:focus-visible {
  background: rgba(22, 35, 63, 0.78);
  border-color: rgba(57, 255, 136, 0.38);
  transform: translateX(5px);
}

.page-faq__cat-num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--datum);
}

.page-faq__cat-name {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--title-font);
  font-size: 16px;
  font-weight: 800;
  color: var(--moon);
}

.page-faq__cattile svg {
  grid-column: 3;
  grid-row: 1;
  justify-self: end;
  color: var(--lime);
}

.page-faq__cat-desc {
  grid-column: 2 / span 2;
  grid-row: 2;
  font-size: 13px;
  line-height: 1.45;
  color: var(--fog);
}

/* ========== 主体布局 ========== */
.page-faq__layout {
  display: grid;
  gap: 56px;
  padding-bottom: 96px;
  position: relative;
}

.page-faq__main {
  min-width: 0;
}

.page-faq__section {
  padding-top: 56px;
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: 108px;
}

.page-faq__section + .page-faq__section {
  margin-top: 24px;
}

.page-faq__section-head {
  position: relative;
  margin-bottom: 24px;
  padding-left: 18px;
}

.page-faq__section-head::before {
  content: "";
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--lime), rgba(57, 255, 136, 0));
  transform: skewX(-14deg);
}

.page-faq__section-index {
  margin: 0 0 8px;
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-faq__section-title,
.page-faq__section-head h2 {
  margin: 0;
  font-family: var(--title-font);
  font-size: clamp(23px, 3.6vw, 32px);
  font-weight: 900;
  line-height: 1.25;
}

.page-faq__section-sub {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fog);
}

/* ========== 手风琴 ========== */
.page-faq__qa {
  border-top: 1px solid var(--faq-line);
}

.page-faq__item {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq__item summary {
  list-style: none;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 20px 0;
  cursor: pointer;
  font-family: var(--title-font);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--moon);
  transition: color 0.2s var(--ease);
}

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

.page-faq__item summary:hover .page-faq__q-text {
  color: var(--lime);
}

.page-faq__item summary:focus-visible {
  outline: 2px solid rgba(57, 255, 136, 0.4);
  outline-offset: 4px;
  border-radius: 4px;
}

.page-faq__q-marker {
  padding: 3px 7px;
  border: 1px solid rgba(255, 209, 102, 0.22);
  border-radius: 4px;
  background: rgba(255, 209, 102, 0.08);
  font-family: var(--mono-font);
  font-size: 11px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--datum);
}

.page-faq__q-text {
  min-width: 0;
  transition: color 0.2s var(--ease);
}

.page-faq__item-icon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(57, 255, 136, 0.35);
  border-radius: 6px;
  font-family: var(--mono-font);
  font-size: 18px;
  line-height: 1;
  color: var(--lime);
  transition:
    transform 0.3s var(--ease),
    background 0.3s var(--ease),
    color 0.3s var(--ease);
}

.page-faq__item[open] .page-faq__item-icon {
  background: var(--lime);
  color: var(--void);
  transform: rotate(45deg);
}

.page-faq__answer {
  overflow: hidden;
}

.page-faq__item[open] .page-faq__answer {
  animation: pageFaqAnswerIn 0.32s var(--ease) both;
}

@keyframes pageFaqAnswerIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq__answer-inner p {
  margin: 0 0 24px;
  padding: 2px 0 8px 26px;
  border-left: 1px solid rgba(57, 255, 136, 0.16);
  font-size: 15px;
  line-height: 1.8;
  color: var(--fog);
}

.page-faq__link {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 255, 136, 0.32);
  transition: border-color 0.2s var(--ease);
}

.page-faq__link:hover,
.page-faq__link:focus-visible {
  border-bottom-color: var(--lime);
}

/* ========== 场馆同步图 ========== */
.page-faq__section-inner {
  display: grid;
  gap: 28px;
}

.page-faq__sync-fig {
  position: relative;
  margin: 0;
  border: 1px solid rgba(168, 184, 208, 0.14);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(16, 26, 48, 0.5);
}

.page-faq__sync-fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq__sync-fig figcaption {
  padding: 10px 14px;
  border-top: 1px solid rgba(168, 184, 208, 0.1);
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fog);
}

/* ========== 反馈侧栏 ========== */
.page-faq__side {
  min-width: 0;
}

.page-faq__feedback {
  position: relative;
  padding: 32px 24px 36px;
  border: 1px solid rgba(57, 255, 136, 0.18);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(160deg, rgba(22, 35, 63, 0.72), rgba(16, 26, 48, 0.92));
}

.page-faq__feedback::before {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 140px;
  height: 140px;
  background: rgba(57, 255, 136, 0.12);
  transform: rotate(14deg);
}

.page-faq__feedback::after {
  content: "";
  position: absolute;
  top: 12px;
  left: 0;
  width: 72px;
  height: 3px;
  background: linear-gradient(90deg, var(--lime), transparent);
  transform: skewX(-14deg);
}

.page-faq__feedback-mark {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  border: 1px solid rgba(255, 122, 26, 0.4);
  border-radius: 100px;
  font-family: var(--mono-font);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ember);
}

.page-faq__feedback h2 {
  margin: 0 0 12px;
  font-family: var(--title-font);
  font-size: 22px;
  font-weight: 900;
  line-height: 1.35;
}

.page-faq__feedback p {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog);
}

.page-faq__feedback .btn-cta {
  position: relative;
  z-index: 1;
}

/* ========== 响应式增强 ========== */
@media (min-width: 640px) {
  .page-faq__hero-grid {
    gap: 44px;
  }

  .page-faq__catgrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq__catgrid .page-faq__cattile:last-child {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-faq__hero-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq__catgrid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq__catgrid .page-faq__cattile:last-child {
    grid-column: auto;
  }
}

@media (min-width: 1024px) {
  .page-faq__layout {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 64px;
  }

  .page-faq__side {
    position: sticky;
    top: 96px;
  }

  .page-faq__section-inner {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 48px;
    align-items: start;
  }
}