/* FAQ 页面专属样式 */
.page-faq {
  --faq-panel-bg: rgba(255, 255, 255, 0.028);
  --faq-line-gold: rgba(201, 162, 39, 0.38);
  position: relative;
  padding-bottom: 3rem;
}

/* 面包屑 */
.page-faq .faq-breadcrumb {
  margin: 1.25rem auto 0.25rem;
}

/* Hero 首屏 */
.page-faq .faq-hero {
  margin-top: 0.5rem;
}

.page-faq .faq-hero__frame {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  border: 1px solid var(--faq-line-gold);
  background:
    linear-gradient(135deg, rgba(201, 162, 39, 0.1) 0%, transparent 38%),
    rgba(10, 35, 66, 0.55);
  padding: 2rem 1.25rem;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-faq .faq-hero__frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 86px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold), rgba(201, 162, 39, 0));
}

.page-faq .faq-hero__content h1 {
  font-family: var(--font-title);
  font-weight: 300;
  font-size: clamp(2rem, 5.5vw, 3.75rem);
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin: 0.875rem 0 1rem;
  color: var(--color-cream);
}

.page-faq .faq-hero__lead {
  color: var(--color-text-alt);
  font-size: 0.98rem;
  line-height: 1.8;
  max-width: 46rem;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.page-faq .faq-hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid rgba(107, 115, 123, 0.45);
  background: rgba(7, 23, 46, 0.45);
  color: var(--color-fog);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
}

.page-faq .faq-hero__meta strong {
  color: var(--color-gold-light);
  font-weight: 600;
}

.page-faq .faq-hero__figure {
  width: 92px;
  height: 92px;
  margin: 0;
  padding: 6px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--color-gold), rgba(201, 162, 39, 0) 72%);
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
}

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

/* 地图图例式分类索引 */
.page-faq .faq-legend {
  margin-top: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(201, 162, 39, 0.16);
}

.page-faq .faq-legend__items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  margin-top: 0.9rem;
}

.page-faq .faq-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-text-alt);
  font-size: 0.88rem;
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-legend__item:hover,
.page-faq .faq-legend__item:focus-visible {
  color: var(--color-gold-light);
  border-bottom-color: var(--color-gold);
}

.page-faq .faq-legend__key {
  width: 12px;
  height: 12px;
  display: inline-block;
  transform: rotate(45deg);
  flex-shrink: 0;
}

.page-faq .faq-legend__key--terra {
  background: var(--color-terra);
}

.page-faq .faq-legend__key--moss {
  background: var(--color-moss);
}

.page-faq .faq-legend__key--stone {
  background: var(--color-stone);
}

.page-faq .faq-legend__key--gold {
  background: var(--color-gold);
}

/* 主布局 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

/* 侧边快速索引 */
.page-faq .faq-sidebar {
  position: relative;
  padding: 1.25rem;
  border: 1px solid rgba(201, 162, 39, 0.2);
  background: rgba(15, 49, 94, 0.42);
}

.page-faq .faq-sidebar::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 30px;
  height: 30px;
  border-top: 2px solid var(--color-gold);
  border-left: 2px solid var(--color-gold);
  opacity: 0.65;
}

.page-faq .faq-sidebar__nav {
  display: grid;
  gap: 0.3rem;
  margin-top: 0.9rem;
}

.page-faq .faq-sidebar__link {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.65rem 0.75rem;
  color: var(--color-text);
  text-decoration: none;
  border-left: 2px solid rgba(107, 115, 123, 0.35);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-sidebar__link::after {
  content: '';
  position: absolute;
  top: 0;
  left: -35%;
  width: 30%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(201, 162, 39, 0.16), transparent);
  transform: skewX(-20deg);
  transition: left 0.5s ease;
}

.page-faq .faq-sidebar__link:hover,
.page-faq .faq-sidebar__link:focus-visible {
  border-left-color: var(--color-gold);
  background: rgba(201, 162, 39, 0.05);
}

.page-faq .faq-sidebar__link:hover::after,
.page-faq .faq-sidebar__link:focus-visible::after {
  left: 120%;
}

.page-faq .faq-sidebar__num {
  font-family: var(--font-title);
  font-size: 0.9rem;
  color: var(--color-gold);
  letter-spacing: 0.08em;
}

.page-faq .faq-sidebar__note {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px dashed rgba(107, 115, 123, 0.35);
  color: var(--color-text-alt);
  font-size: 0.84rem;
  line-height: 1.7;
}

.page-faq .faq-sidebar__note .btn {
  margin-top: 0.75rem;
}

/* 问题面板 */
.page-faq .faq-panel {
  position: relative;
  padding: 1.5rem 1.25rem;
  margin-bottom: 1.75rem;
  border: 1px solid rgba(107, 115, 123, 0.24);
  background: var(--faq-panel-bg);
}

.page-faq .faq-panel::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 34px;
  height: 34px;
  border-top: 2px solid var(--color-gold);
  border-left: 2px solid var(--color-gold);
  opacity: 0.7;
}

.page-faq .faq-panel::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46px;
  height: 2px;
  background: linear-gradient(270deg, var(--color-gold), rgba(201, 162, 39, 0));
}

.page-faq .faq-panel__index {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.22rem 0.75rem;
  border: 1px solid rgba(201, 162, 39, 0.35);
  color: var(--color-gold);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  transform: skewX(-8deg);
}

.page-faq .faq-panel__index::before {
  content: '//';
  letter-spacing: 0.08em;
  color: rgba(201, 162, 39, 0.6);
}

.page-faq .faq-panel__head h2 {
  font-family: var(--font-title);
  font-weight: 300;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin: 0.75rem 0 0.35rem;
  color: var(--color-cream);
}

.page-faq .faq-panel__head .lead {
  color: var(--color-text-alt);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* 示意图 */
.page-faq .faq-figure {
  margin: 1.5rem 0;
  padding: 0.7rem;
  border: 1px solid rgba(107, 115, 123, 0.26);
  background: rgba(7, 23, 46, 0.42);
}

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

.page-faq .faq-figure figcaption {
  padding-top: 0.65rem;
  color: var(--color-text-alt);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
}

/* 问题列表 */
.page-faq .faq-list {
  display: grid;
  gap: 0.35rem;
}

/* 手风琴项 */
.page-faq .faq-item {
  border-bottom: 1px solid rgba(107, 115, 123, 0.2);
  transition: background 0.25s ease, border-color 0.25s ease;
}

.page-faq .faq-item[open] {
  background: rgba(10, 35, 66, 0.35);
  border-bottom-color: rgba(201, 162, 39, 0.28);
}

.page-faq .faq-item__summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  cursor: pointer;
  padding: 1rem 0.4rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  transition: color 0.2s ease;
}

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

.page-faq .faq-item__summary:hover {
  color: var(--color-gold-light);
}

.page-faq .faq-item__num {
  flex-shrink: 0;
  display: inline-block;
  padding: 0.18rem 0.4rem;
  border: 1px solid rgba(201, 162, 39, 0.4);
  font-family: var(--font-title);
  font-size: 0.85rem;
  color: var(--color-gold);
  transform: skewX(-12deg);
  line-height: 1.2;
}

.page-faq .faq-item__title {
  flex: 1;
  line-height: 1.5;
}

.page-faq .faq-item__mark {
  flex-shrink: 0;
  width: 9px;
  height: 9px;
  border-right: 1px solid var(--color-gold);
  border-bottom: 1px solid var(--color-gold);
  transform: rotate(45deg);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(225deg);
  border-color: var(--color-gold-light);
}

.page-faq .faq-item__body {
  padding: 0 0.6rem 1.1rem 1.9rem;
  color: var(--color-text-alt);
  font-size: 0.92rem;
  line-height: 1.85;
}

.page-faq .faq-item__body p {
  margin: 0.65rem 0;
}

.page-faq .faq-item__body ol,
.page-faq .faq-item__body ul {
  margin: 0.65rem 0;
  padding-left: 1.2rem;
}

.page-faq .faq-item__body li {
  margin-bottom: 0.4rem;
}

.page-faq .faq-item__body a:not(.btn) {
  color: var(--color-gold-light);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.page-faq .faq-item__body a:not(.btn):hover {
  color: var(--color-gold);
}

.page-faq .faq-item__body .btn {
  margin-top: 0.75rem;
}

/* 桌面端布局增强 */
@media (min-width: 768px) {
  .page-faq {
    padding-bottom: 5rem;
  }

  .page-faq .faq-hero__frame {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    padding: 3rem 2.5rem;
  }

  .page-faq .faq-hero__content {
    max-width: 720px;
  }

  .page-faq .faq-hero__figure {
    width: 92px;
    height: 92px;
    margin-top: 0.35rem;
  }

  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
    gap: 2.25rem;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: calc(var(--header-shrink) + 1.25rem);
  }

  .page-faq .faq-panel {
    padding: 2.25rem 2rem;
    margin-bottom: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 3rem;
  }

  .page-faq .faq-hero__frame {
    padding: 3.5rem 3.25rem;
  }

  .page-faq .faq-panel {
    padding: 2.5rem;
  }
}