/* ===== 常见问题 FAQ 页面专属样式 ===== */
.page-faq {
  ---faq-sidebar: 280px;
  scroll-behavior: smooth;
  background: var(--color-white);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  padding: 18px 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-bluegray);
}

.page-faq .breadcrumb__item {
  color: var(--color-blue);
  text-decoration: none;
}

.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 10px;
  color: var(--color-bluegray);
}

.page-faq .breadcrumb__item[aria-current="page"] {
  color: var(--color-dark);
  cursor: default;
}

/* Hero */
.page-faq .faq-hero {
  position: relative;
  background-color: var(--color-blue);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--color-white);
  border: 1px solid var(--color-deepblue);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 20px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
}

.page-faq .faq-hero__copy {
  padding: 32px 24px 24px;
}

.page-faq .faq-hero__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--color-green);
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 42px;
  line-height: 1.08;
  color: var(--color-white);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__lead {
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-bluegray);
  max-width: 56ch;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-faq .faq-hero__stat {
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 10px 14px;
  min-width: 96px;
}

.page-faq .faq-hero__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-green);
}

.page-faq .faq-hero__num small {
  font-size: 14px;
  color: var(--color-white);
  margin-left: 2px;
}

.page-faq .faq-hero__stat-label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--color-bluegray);
}

.page-faq .faq-hero__media {
  padding: 0 24px 24px;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

/* 快速定位提示 */
.page-faq .faq-tip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: center;
  background: var(--color-white);
  border: 1px solid var(--color-bluegray);
  border-left: 3px solid var(--color-green);
  padding: 10px 16px;
  margin-bottom: 20px;
  font-size: 13px;
}

.page-faq .faq-tip__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--color-blue);
  background: var(--color-cream);
  padding: 4px 8px;
  border: 1px solid var(--color-bluegray);
}

.page-faq .faq-tip p {
  margin: 0;
  color: var(--color-dark);
  line-height: 1.6;
}

.page-faq .faq-tip kbd {
  font-family: var(--font-mono);
  background: var(--color-cream);
  border: 1px solid var(--color-bluegray);
  border-bottom-width: 2px;
  padding: 1px 6px;
  font-size: 12px;
  color: var(--color-dark);
}

/* 两栏布局 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: start;
  margin-bottom: 40px;
}

/* 索引侧栏 */
.page-faq .faq-index {
  background: var(--color-white);
  border: 1px solid var(--color-bluegray);
}

.page-faq .faq-index__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--color-cream);
  border-bottom: 1px solid var(--color-bluegray);
}

.page-faq .faq-index__kicker {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--color-orange);
}

.page-faq .faq-index__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-dark);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 8px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.page-faq .faq-index__list li {
  margin: 0;
  padding: 0;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  text-decoration: none;
  color: var(--color-dark);
  font-size: 13px;
  background: var(--color-cream);
  border: 1px solid var(--color-bluegray);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  min-height: 100%;
  box-sizing: border-box;
}

.page-faq .faq-index__list a:hover {
  background: var(--color-blue);
  color: var(--color-white);
  border-color: var(--color-blue);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-orange);
  flex-shrink: 0;
}

.page-faq .faq-index__list a:hover .faq-index__num {
  color: var(--color-green);
}

.page-faq .faq-index__label {
  line-height: 1.35;
}

.page-faq .faq-index__status {
  background: var(--color-deepblue);
  color: var(--color-white);
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  border-top: 3px solid var(--color-green);
}

.page-faq .faq-index__status-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
}

.page-faq .faq-index__dot {
  width: 8px;
  height: 8px;
  background: var(--color-green);
  border-radius: 50%;
  animation: faq-pulse 400ms cubic-bezier(0.4, 0, 0.2, 1) infinite alternate;
}

@keyframes faq-pulse {
  from { opacity: 1; }
  to { opacity: 0.35; }
}

.page-faq .faq-index__metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 0;
}

.page-faq .faq-index__metrics div {
  background: rgba(255, 255, 255, 0.08);
  padding: 8px 10px;
}

.page-faq .faq-index__metrics dt {
  font-size: 10px;
  color: var(--color-bluegray);
  margin-bottom: 4px;
}

.page-faq .faq-index__metrics dd {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-green);
}

/* 面板手风琴 */
.page-faq .faq-panels {
  display: flex;
  flex-direction: column;
  gap: 28px;
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: 16px;
}

.page-faq .faq-section__title {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 0 10px;
  margin: 0 0 4px;
  border-bottom: 2px solid var(--color-dark);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
}

.page-faq .faq-section__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-orange);
}

.page-faq .faq-section__name {
  color: var(--color-blue);
}

.page-faq .faq-item {
  border: 1px solid var(--color-bluegray);
  border-left: 3px solid transparent;
  background: var(--color-white);
  margin-top: 10px;
  transition: border-color var(--transition), background var(--transition);
}

.page-faq .faq-item[open] {
  border-left-color: var(--color-green);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-dark);
  line-height: 1.4;
}

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

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

.page-faq .faq-item[open] .faq-item__summary {
  color: var(--color-blue);
  border-bottom: 1px solid var(--color-bluegray);
}

.page-faq .faq-item__icon {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--color-blue);
  transition: transform var(--transition), opacity var(--transition);
}

.page-faq .faq-item__icon::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 18px 18px 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-dark);
  background: var(--color-cream);
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
}

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

.page-faq .faq-item__body a {
  color: var(--color-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-faq .faq-item__body a:hover {
  color: var(--color-orange);
}

/* 示意图 */
.page-faq .faq-figure {
  margin: 16px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  border: 1px solid var(--color-bluegray);
  background: var(--color-white);
}

.page-faq .faq-figure figcaption {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-blue);
}

/* 底部帮助区域 */
.page-faq .faq-help {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
  align-items: center;
  background: var(--color-cream);
  border: 1px solid var(--color-bluegray);
  padding: 24px;
  margin-bottom: 48px;
}

.page-faq .faq-help h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--color-dark);
}

.page-faq .faq-help p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-dark);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 桌面端增强 */
@media (min-width: 960px) {
  .page-faq .breadcrumb {
    padding: 22px 0 18px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1.08fr 1fr;
    align-items: center;
  }

  .page-faq .faq-hero__copy {
    padding: 44px 36px 44px 40px;
  }

  .page-faq .faq-hero h1 {
    font-size: 56px;
  }

  .page-faq .faq-hero__lead {
    font-size: 16px;
  }

  .page-faq .faq-hero__media {
    padding: 36px 36px 36px 0;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-sidebar, 280px) 1fr;
    gap: 28px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 16px;
  }

  .page-faq .faq-index__head {
    padding: 14px 18px;
  }

  .page-faq .faq-index__list {
    display: block;
    padding: 4px 0;
  }

  .page-faq .faq-index__list li {
    border-bottom: 1px solid var(--color-bluegray);
  }

  .page-faq .faq-index__list li:last-child {
    border-bottom: none;
  }

  .page-faq .faq-index__list a {
    gap: 14px;
    padding: 13px 18px;
    font-size: 14px;
    background: transparent;
    border: none;
    border-left: 3px solid transparent;
  }

  .page-faq .faq-index__list a:hover {
    background: var(--color-blue);
    border-left-color: var(--color-green);
  }

  .page-faq .faq-index__status {
    padding: 16px 18px;
  }

  .page-faq .faq-panels {
    gap: 36px;
  }

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

  .page-faq .faq-section__num {
    font-size: 14px;
  }

  .page-faq .faq-item__summary {
    padding: 18px 24px;
    font-size: 16px;
  }

  .page-faq .faq-item__body {
    padding: 20px 24px 24px;
    font-size: 15px;
  }

  .page-faq .faq-help {
    padding: 32px 40px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-hero__copy {
    padding-left: 48px;
  }

  .page-faq .faq-hero__media img {
    max-width: 520px;
    margin-left: auto;
  }
}

.page-faq {
  --faq-sidebar: var(---faq-sidebar);
}