/* ===== 问题解答页专属样式 ===== */
.page-faq {
  --faq-sidebar-width: 288px;
  position: relative;
  background:
    radial-gradient(circle at 88% 6%, rgba(10, 31, 68, 0.06) 0, transparent 260px),
    var(--color-bg-light);
  min-height: 70vh;
  padding-bottom: 64px;
}

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

/* ===== 页头 ===== */
.page-faq .page-heading {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 34px 0 28px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--color-border-light);
}

.page-faq .page-heading::before {
  content: "FAQ";
  position: absolute;
  top: 26px;
  right: 0;
  font-family: var(--font-display);
  font-size: 68px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  opacity: 0.06;
  pointer-events: none;
}

.page-faq .page-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 76px;
  height: 3px;
  background: var(--color-accent);
}

.page-faq .page-heading__subtitle {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--color-accent);
  text-transform: uppercase;
}

.page-faq .page-heading__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 5.2vw, 52px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  text-transform: uppercase;
}

.page-faq .page-heading__lead {
  margin: 4px 0 0;
  max-width: 680px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-subtle);
}

/* ===== 搜索框 ===== */
.page-faq .faq-search {
  position: relative;
  margin-bottom: 38px;
}

.page-faq .faq-search__input {
  width: 100%;
  padding: 15px 20px 15px 50px;
  border: 2px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-white);
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-dark);
  transition: border-color 0.25s, box-shadow 0.25s;
  box-sizing: border-box;
}

.page-faq .faq-search__input::placeholder {
  color: var(--color-text-subtle);
}

.page-faq .faq-search__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(255, 107, 0, 0.14);
}

.page-faq .faq-search__icon {
  position: absolute;
  left: 17px;
  top: 50%;
  transform: translateY(-50%);
  width: 17px;
  height: 17px;
  border: 2px solid var(--color-grid);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-search__icon::after {
  content: "";
  position: absolute;
  right: -6px;
  bottom: -3px;
  width: 7px;
  height: 2px;
  background: var(--color-grid);
  transform: rotate(45deg);
}

/* ===== 两栏布局 ===== */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

/* ===== 分类索引 ===== */
.page-faq .faq-index {
  position: relative;
  overflow: hidden;
  padding: 24px 22px 22px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(135deg, rgba(30, 58, 95, 0.62) 0%, transparent 52%),
    var(--color-primary);
  color: var(--color-white);
}

.page-faq .faq-index::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, transparent 50%, rgba(255, 107, 0, 0.88) 50%);
}

.page-faq .faq-index::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 4px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-accent) 0 38%, rgba(255, 255, 255, 0.12) 38% 100%);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-white);
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text-on-dark);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.22s, color 0.22s, transform 0.22s;
}

.page-faq .faq-index__link::before {
  content: attr(data-index);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-accent);
}

.page-faq .faq-index__link:hover {
  background: rgba(255, 107, 0, 0.28);
  color: var(--color-white);
}

.page-faq .faq-index__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.page-faq .faq-index__stat {
  display: flex;
  flex-direction: column;
  gap: 3px;
  text-align: center;
}

.page-faq .faq-index__stat-value {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-white);
}

.page-faq .faq-index__stat-label {
  font-size: 11px;
  line-height: 1.4;
  color: var(--color-text-on-dark);
}

/* ===== 手风琴列表 ===== */
.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-section {
  margin-bottom: 52px;
  scroll-margin-top: calc(var(--header-height) + 26px);
}

.page-faq .faq-section__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.page-faq .faq-section__title::after {
  content: "";
  flex: 0 0 26px;
  height: 3px;
  background: var(--color-accent);
  margin-left: 4px;
}

.page-faq .faq-section__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 26px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  background: var(--color-primary);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-white);
}

.page-faq .faq-section__intro {
  margin: 0 0 20px;
  max-width: 560px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-subtle);
}

/* details 条目 */
.page-faq .faq-item {
  margin-bottom: 12px;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-left: 3px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.page-faq .faq-item[open] {
  border-left-color: var(--color-accent);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 17px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  transition: color 0.2s;
}

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

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

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text-dark);
  font-family: var(--font-body);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--color-primary);
}

.page-faq .faq-item__summary::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: var(--color-bg-light);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  line-height: 24px;
  text-align: center;
  transition: background 0.22s, color 0.22s, transform 0.22s;
}

.page-faq .faq-item[open] .faq-item__summary::after {
  content: "–";
  background: var(--color-accent);
  color: var(--color-white);
}

.page-faq .faq-item__body {
  padding: 0 18px 18px;
  border-top: 1px dashed var(--color-border-light);
  font-size: 14px;
  line-height: 1.85;
  color: #33465C;
}

.page-faq .faq-item[open] .faq-item__body {
  padding-top: 14px;
}

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

.page-faq .faq-item__body a {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 0, 0.35);
  transition: border-color 0.2s, color 0.2s;
}

.page-faq .faq-item__body a:hover {
  color: var(--color-accent-light);
  border-bottom-color: var(--color-accent-light);
}

/* ===== 图示 ===== */
.page-faq .faq-figure {
  max-width: 380px;
  margin: 22px 0 0;
  padding: 10px 10px 8px;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
}

.page-faq .faq-figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.page-faq .faq-figure figcaption {
  padding: 10px 4px 4px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--color-text-subtle);
}

/* ===== 底部支持横幅 ===== */
.page-faq .faq-more {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 8px;
  padding: 30px 28px;
  border-radius: 12px;
  background: linear-gradient(100deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
}

.page-faq .faq-more::before {
  content: "";
  position: absolute;
  right: -44px;
  top: -44px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255, 107, 0, 0.2);
}

.page-faq .faq-more::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent) 0 30%, var(--color-accent-light) 30% 58%, transparent 58%);
}

.page-faq .faq-more__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-white);
}

.page-faq .faq-more__text {
  margin: 0;
  max-width: 560px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-on-dark);
}

.page-faq .faq-more .btn {
  position: relative;
  z-index: 1;
  align-self: flex-start;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 992px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-sidebar-width) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-height) + 26px);
    padding: 28px 24px 24px;
  }

  .page-faq .faq-index__title {
    margin-bottom: 18px;
    font-size: 18px;
  }

  .page-faq .faq-index__list {
    display: grid;
    gap: 4px;
    margin-bottom: 24px;
  }

  .page-faq .faq-index__link {
    display: flex;
    padding: 11px 12px;
    border-radius: 6px;
    background: transparent;
    font-size: 14px;
  }

  .page-faq .faq-index__link:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(3px);
  }

  .page-faq .faq-index__stat-value {
    font-size: 24px;
  }

  .page-faq .faq-section__title {
    font-size: 28px;
  }

  .page-faq .faq-section__intro {
    margin-bottom: 24px;
  }

  .page-faq .faq-item__summary {
    padding: 18px 22px;
  }

  .page-faq .faq-item__body {
    padding: 0 22px 22px 74px;
  }

  .page-faq .faq-item[open] .faq-item__body {
    padding-top: 14px;
  }

  .page-faq .faq-more {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 36px 34px;
  }

  .page-faq .faq-more .btn {
    flex: 0 0 auto;
  }
}

@media (min-width: 768px) {
  .page-faq .faq-search__input {
    padding: 18px 24px 18px 56px;
    font-size: 16px;
  }
}