/* ===== 页面基底 ===== */
.page-faq {
  background: var(--gray);
  color: var(--text-light);
}

.page-faq .jn-container {
  max-width: 1200px;
}

.page-faq .jn-section {
  padding: 48px 0;
  border-top: 1px solid var(--line);
}

.page-faq__section--sync {
  background: var(--gray);
}

.page-faq__section--filter {
  background: var(--teal);
}

.page-faq__section--stats {
  background: var(--gray);
}

.page-faq__section--access {
  background: var(--off-white);
}

.page-faq__section--contact {
  background: var(--ink);
}

/* ===== 章节标题 ===== */
.page-faq__head {
  margin-bottom: 28px;
  gap: 12px;
  flex-wrap: wrap;
  align-items: baseline;
}

.page-faq__note-en {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* ===== Hero ===== */
.page-faq__hero {
  padding: 20px 0 44px;
  border-top: 0;
  background:
    radial-gradient(circle at 82% 20%, rgba(255, 107, 53, .16), transparent 42%),
    linear-gradient(140deg, var(--teal) 0%, var(--ink) 100%);
}

.page-faq__hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-faq__hero-copy .breadcrumbs {
  margin-bottom: 16px;
}

.page-faq__title {
  font-family: var(--font-display);
  font-size: clamp(40px, 8vw, 64px);
  line-height: .98;
  letter-spacing: .01em;
  color: #FFFFFF;
  margin: 12px 0 8px;
}

.page-faq .page-title__sub {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 14px;
}

.page-faq__lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 56ch;
  margin: 0;
}

.page-faq__hero-visual {
  padding: 10px;
  border: 1px solid rgba(255, 107, 53, .35);
  background: rgba(7, 31, 32, .5);
}

.page-faq__hero-frame {
  aspect-ratio: 4 / 3;
  background: var(--ink);
}

.page-faq__hero-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(.25) contrast(1.08);
}

.page-faq__hero-cap {
  display: block;
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange-pale);
}

/* ===== 主内容网格 ===== */
.page-faq__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-faq__list {
  display: grid;
  gap: 10px;
}

/* ===== FAQ 条目 ===== */
.page-faq__item {
  border: 1px solid rgba(242, 240, 236, .14);
  background: rgba(242, 240, 236, .05);
  transition: border-color var(--dur) var(--ease);
}

.page-faq__item[open] {
  border-color: var(--orange);
}

.page-faq__q {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  color: var(--text-light);
  transition: background var(--dur) var(--ease);
}

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

.page-faq__q:hover {
  background: var(--teal-light);
}

.page-faq__item[open] .page-faq__q {
  background: var(--teal);
}

.page-faq__q-num {
  flex: 0 0 auto;
  min-width: 40px;
  height: 26px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--orange);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
}

.page-faq__q-title {
  flex: 1;
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: inherit;
}

.page-faq__plus {
  position: relative;
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
  transition: transform var(--dur) var(--ease);
}

.page-faq__plus::before,
.page-faq__plus::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--orange);
}

.page-faq__plus::before {
  width: 14px;
  height: 2px;
}

.page-faq__plus::after {
  width: 2px;
  height: 14px;
}

.page-faq__item[open] .page-faq__plus {
  transform: rotate(45deg);
}

/* ===== 答案面板 ===== */
.page-faq__a {
  padding: 18px 20px 22px;
  border-top: 1px solid rgba(242, 240, 236, .1);
  background: var(--teal);
  color: var(--text-light);
}

.page-faq__a p {
  margin: 0;
}

.page-faq__a p + p {
  margin-top: 8px;
}

.page-faq__num {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  color: var(--orange-pale);
  letter-spacing: .02em;
}

/* ===== 侧边说明卡 ===== */
.page-faq__aside {
  padding: 20px;
  border: 1px solid rgba(242, 240, 236, .14);
  background:
    linear-gradient(160deg, rgba(255, 107, 53, .05), transparent 42%),
    rgba(242, 240, 236, .04);
}

.page-faq__aside-label {
  display: inline-block;
  margin-bottom: 14px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--orange);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq__aside-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--text-light);
}

.page-faq__aside-stat {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq__aside-stat + .page-faq__aside-stat {
  margin-top: 20px;
}

.page-faq__aside-unit {
  margin-left: 4px;
  font-size: 20px;
  color: var(--text-muted);
}

.page-faq__aside-desc {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--text-muted);
}

.page-faq__aside-list {
  display: grid;
  gap: 8px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-faq__aside-list li {
  padding: 10px 12px;
  border-left: 2px solid var(--orange);
  background: rgba(242, 240, 236, .06);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-light);
}

/* ===== 链接 ===== */
.page-faq__link {
  display: inline-block;
  margin-top: 16px;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(255, 107, 53, .5);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-decoration: none;
  color: var(--orange);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq__link:hover {
  border-color: var(--orange);
  color: #FFFFFF;
}

.page-faq__inline-link {
  padding-bottom: 1px;
  border-bottom: 1px solid rgba(255, 107, 53, .5);
  text-decoration: none;
  color: var(--orange);
  transition: border-color var(--dur) var(--ease);
}

.page-faq__inline-link:hover {
  border-color: #FFFFFF;
}

/* ===== 浅色区块适配 ===== */
.page-faq__section--access .page-faq__item {
  border-color: rgba(10, 61, 63, .14);
  background: #FFFFFF;
}

.page-faq__section--access .page-faq__q {
  color: var(--gray);
}

.page-faq__section--access .page-faq__q:hover {
  color: #FFFFFF;
  background: var(--teal-light);
}

.page-faq__section--access .page-faq__item[open] .page-faq__q {
  color: #FFFFFF;
  background: var(--teal);
}

.page-faq__section--access .page-faq__aside {
  border-color: rgba(10, 61, 63, .14);
  background: #FFFFFF;
}

.page-faq__section--access .page-faq__aside-title {
  color: var(--gray);
}

.page-faq__section--access .page-faq__aside-desc {
  color: var(--gray);
}

.page-faq__section--access .page-faq__aside-label {
  border-bottom-color: var(--teal);
  color: var(--teal);
}

.page-faq__section--access .page-faq__aside-list li {
  background: rgba(10, 61, 63, .06);
  color: var(--gray);
}

/* ===== 深青区块适配 ===== */
.page-faq__section--filter .page-faq__item {
  border-color: rgba(242, 240, 236, .12);
  background: rgba(242, 240, 236, .06);
}

.page-faq__section--filter .page-faq__item[open] {
  border-color: var(--orange);
}

.page-faq__section--filter .page-faq__item[open] .page-faq__q {
  background: var(--teal-light);
}

.page-faq__section--filter .page-faq__a {
  background: var(--ink);
}

/* ===== 墨色区块适配 ===== */
.page-faq__section--contact .page-faq__item[open] .page-faq__q {
  background: var(--teal-light);
}

.page-faq__aside--contact {
  border-color: var(--orange);
  background: rgba(255, 107, 53, .07);
}

/* ===== 联系列表 ===== */
.page-faq__contact-list {
  margin: 0 0 4px;
}

.page-faq__contact-list dt {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.page-faq__contact-list dd {
  margin: 2px 0 0;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-light);
}

.page-faq__contact-mail {
  width: fit-content;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-faq__contact-mail:hover {
  border-bottom-color: var(--orange);
}

/* ===== 移动端示意图 ===== */
.page-faq__aside-img-wrap {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--gray);
}

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

/* ===== 信任声明 ===== */
.page-faq__trust {
  margin-top: 36px;
  padding: 18px 20px;
  border-top: 1px solid rgba(255, 107, 53, .5);
  border-bottom: 1px solid rgba(255, 107, 53, .5);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ===== 焦点 ===== */
.page-faq summary:focus-visible,
.page-faq a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ===== 平板 ===== */
@media (min-width: 768px) {
  .page-faq .jn-section {
    padding: 64px 0;
  }

  .page-faq__head {
    margin-bottom: 36px;
  }

  .page-faq__hero {
    padding: 28px 0 56px;
  }
}

/* ===== 桌面 ===== */
@media (min-width: 1024px) {
  .page-faq .jn-section {
    padding: 88px 0;
  }

  .page-faq__hero {
    padding: 32px 0 76px;
  }

  .page-faq__hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: center;
  }

  .page-faq__grid {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 40px;
    align-items: start;
  }
}