/* ===== 使用答疑 / page-faq ===== */
.page-faq {
  display: block;
  padding-bottom: 76px;
}

.page-faq .faq-shell {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* —— 首屏 —— */
.page-faq .faq-crumbs {
  padding: 18px 0 8px;
  flex-wrap: wrap;
}
.page-faq .faq-crumbs a {
  color: var(--rock);
  text-decoration: none;
}
.page-faq .faq-crumbs a:hover {
  color: var(--cyan);
}

.page-faq .faq-hero {
  display: grid;
  gap: 22px;
  padding: 6px 0 30px;
  align-items: start;
}

.page-faq .faq-hero__lead h1 {
  margin: 12px 0 14px;
  font-size: clamp(28px, 6.8vw, 40px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.012em;
  color: var(--bone);
}

.page-faq .faq-hero__lead .lede {
  max-width: 66ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(242, 239, 230, 0.82);
}

.page-faq .faq-hero__side {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  padding: 4px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.page-faq .faq-stat {
  display: grid;
  gap: 6px;
  padding: 13px 12px 15px;
  border-radius: 10px;
  background: rgba(11, 16, 32, 0.72);
}
.page-faq .faq-stat__v {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
}
.page-faq .faq-stat:nth-child(2) .faq-stat__v {
  color: var(--orange);
}
.page-faq .faq-stat:nth-child(3) .faq-stat__v {
  color: var(--moss);
}
.page-faq .faq-stat:nth-child(4) .faq-stat__v {
  color: var(--magenta);
}
.page-faq .faq-stat__k {
  font-size: 12px;
  line-height: 1.55;
  color: var(--rock);
}

.page-faq .faq-banner {
  margin: 0 0 22px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
}
.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* —— 筛选工具条 —— */
.page-faq .faq-tools {
  position: sticky;
  top: 0;
  z-index: 8;
  display: grid;
  gap: 12px;
  margin: 0 0 6px;
  padding: 14px 16px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-search {
  display: block;
}
.page-faq .faq-search__label {
  display: block;
  margin-bottom: 7px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--rock);
}
.page-faq .faq-search__input {
  width: 100%;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(5, 7, 15, 0.62);
  color: var(--bone);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.4;
}
.page-faq .faq-search__input::placeholder {
  color: rgba(140, 150, 173, 0.72);
}
.page-faq .faq-search__input:focus {
  outline: none;
  border-color: var(--line-cyan);
  box-shadow: 0 0 0 3px rgba(53, 242, 214, 0.14);
}

.page-faq .faq-count {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--rock);
}
.page-faq .faq-count .num {
  color: var(--cyan);
}

/* —— 主题跳转 —— */
.page-faq .faq-jump {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 16px 2px 8px;
  scrollbar-width: thin;
}
.page-faq .faq-jump__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(19, 28, 51, 0.72);
  color: var(--bone);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.page-faq .faq-jump__link .num {
  color: var(--rock);
  font-size: 12px;
}
.page-faq .faq-jump__link:hover {
  border-color: var(--line-cyan);
  color: var(--cyan);
}
.page-faq .faq-jump__link[aria-current="true"] {
  border-color: var(--cyan);
  color: var(--cyan);
}
.page-faq .faq-jump__link[aria-current="true"] .num {
  color: var(--cyan);
}

/* —— 分组 —— */
.page-faq .faq-group {
  padding-top: 44px;
  scroll-margin-top: 132px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: end;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(38px, 10.5vw, 62px);
  line-height: 0.82;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: rgba(53, 242, 214, 0.08);
  -webkit-text-stroke: 1px rgba(53, 242, 214, 0.5);
}

.page-faq .faq-group__meta {
  min-width: 0;
}
.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 4.8vw, 26px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.008em;
  color: var(--bone);
}
.page-faq .faq-group__sub {
  margin: 7px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--rock);
}

/* —— 折叠问答 —— */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  border-radius: 4px 12px 12px 4px;
  background: linear-gradient(180deg, rgba(19, 28, 51, 0.92), rgba(11, 16, 32, 0.94));
  overflow: hidden;
  transition: border-color 0.16s var(--ease), background 0.16s var(--ease);
}
.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: linear-gradient(180deg, rgba(23, 35, 60, 0.96), rgba(11, 16, 32, 0.96));
}
.page-faq .faq-item[hidden] {
  display: none;
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 14px 16px 13px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--bone);
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q::before {
  content: "";
  width: 0;
  height: 0;
  margin-top: 8px;
  border-left: 7px solid var(--rock);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform 0.2s var(--ease), border-left-color 0.2s var(--ease);
}
.page-faq .faq-item[open] .faq-item__q::before {
  transform: rotate(90deg);
  border-left-color: var(--cyan);
}
.page-faq .faq-item__q:hover {
  color: #ffffff;
}

.page-faq .faq-item__a {
  padding: 0 16px 16px 44px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 239, 230, 0.8);
}
.page-faq .faq-item__a p {
  margin: 0 0 8px;
}
.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

/* —— 节奏说明条 —— */
.page-faq .faq-rhythm {
  display: grid;
  gap: 0;
  margin-top: 56px;
  overflow: hidden;
  border: 1px solid var(--line-cyan);
  border-radius: 18px;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-float);
}

.page-faq .faq-rhythm__body {
  padding: 24px 20px 26px;
}
.page-faq .faq-rhythm__title {
  margin: 10px 0 16px;
  font-size: clamp(20px, 4.8vw, 25px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.008em;
  color: var(--bone);
}

.page-faq .faq-rhythm__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-rhythm__list li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(242, 239, 230, 0.84);
}
.page-faq .faq-rhythm__list li:last-child {
  border-bottom: 0;
}
.page-faq .faq-rhythm__t {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--cyan);
  white-space: nowrap;
}

.page-faq .faq-rhythm__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--rock);
}

.page-faq .faq-rhythm__figure {
  position: relative;
  margin: 0;
  min-height: 200px;
  border-top: 1px solid var(--line-soft);
}
.page-faq .faq-rhythm__figure img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* —— 联系块 —— */
.page-faq .faq-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: center;
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(5, 7, 15, 0.55);
}

/* —— 页尾相关入口 —— */
.page-faq .faq-footlinks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: 54px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}
.page-faq .faq-footlinks a {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--rock);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.page-faq .faq-footlinks a:hover {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

/* —— 桌面端 —— */
@media (min-width: 860px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.6fr) minmax(268px, 0.72fr);
    gap: 34px;
    align-items: end;
    padding-bottom: 36px;
  }
  .page-faq .faq-tools {
    grid-template-columns: minmax(0, 1fr) max-content;
    align-items: end;
    gap: 20px;
    padding: 16px 20px 18px;
  }
  .page-faq .faq-count {
    padding-bottom: 12px;
    text-align: right;
  }
  .page-faq .faq-item__q {
    font-size: 16px;
    padding: 16px 20px 14px;
  }
  .page-faq .faq-item__a {
    padding: 0 20px 18px 48px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-rhythm {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
  }
  .page-faq .faq-rhythm__figure {
    min-height: 100%;
    border-top: 0;
    border-left: 1px solid var(--line-soft);
  }
  .page-faq .faq-rhythm__body {
    padding: 30px 28px 32px;
  }
  .page-faq .faq-group {
    scroll-margin-top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__q::before,
  .page-faq .faq-jump__link,
  .page-faq .faq-footlinks a {
    transition: none;
  }
}