/* ============================================================
   page-faq · 答疑中心
   全部选择器限定在 .page-faq 作用域内
   ============================================================ */

.page-faq {
  --faq-pad: 14px;
  --faq-num-col: 40px;
  --faq-gap: 10px;
  --faq-text-x: calc(var(--faq-pad) + var(--faq-num-col) + var(--faq-gap));
  --faq-dash: rgba(30, 58, 95, .8);
  display: block;
  padding-bottom: var(--space-section);
}

@media (min-width: 720px) {
  .page-faq {
    --faq-pad: 18px;
    --faq-num-col: 48px;
    --faq-gap: 14px;
  }
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: clamp(16px, 2.5vw, 28px);
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-faq .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: rgba(56, 225, 208, .5);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--cream);
}

.page-faq .breadcrumb__sep {
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(24px, 4vw, 44px);
  padding-bottom: clamp(26px, 4.5vw, 54px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -130px;
  left: -90px;
  right: -90px;
  height: 420px;
  pointer-events: none;
  background:
    radial-gradient(48% 92% at 22% 10%, rgba(56, 225, 208, .16), transparent 72%),
    radial-gradient(44% 84% at 84% 4%, rgba(232, 180, 74, .11), transparent 74%),
    radial-gradient(34% 66% at 62% 46%, rgba(224, 69, 123, .07), transparent 78%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  align-items: center;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-narrow);
  font-size: clamp(27px, 5.4vw, 48px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: .025em;
  color: var(--cream);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--muted);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-fact {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 12px 7px 11px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  background: rgba(12, 31, 56, .72);
  font-size: 12.5px;
  line-height: 1.3;
  color: var(--muted);
}

.page-faq .faq-fact b {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  opacity: .88;
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(158deg, rgba(7, 20, 38, .05) 0%, rgba(7, 20, 38, .58) 100%);
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }
}

/* ---------- 速查标签条 ---------- */
.page-faq .faq-jump {
  position: sticky;
  top: var(--header-h);
  z-index: 7;
  background: rgba(7, 20, 38, .94);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-faq .faq-jump__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 9px;
  padding-bottom: 9px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.page-faq .faq-jump__inner::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-jump__key {
  flex: 0 0 auto;
  padding-right: 11px;
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gold);
  white-space: nowrap;
}

.page-faq .faq-jump__list {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump__link {
  display: inline-block;
  padding: 7px 13px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--cyan-soft);
  background: rgba(56, 225, 208, .1);
  border-color: rgba(56, 225, 208, .35);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-body {
  padding-top: clamp(30px, 5vw, 60px);
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 66px);
  padding-bottom: clamp(32px, 5vw, 58px);
}

.page-faq .faq-group + .faq-group {
  border-top: 1px solid rgba(30, 58, 95, .55);
  padding-top: clamp(32px, 5vw, 58px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2.6vw, 26px);
  align-items: start;
  margin-bottom: clamp(16px, 2.6vw, 26px);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 52px);
  font-weight: 700;
  line-height: .9;
  letter-spacing: -.02em;
  user-select: none;
  background: linear-gradient(180deg, rgba(56, 225, 208, .85), rgba(56, 225, 208, .08));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@supports not ((background-clip: text) or (-webkit-background-clip: text)) {
  .page-faq .faq-group__num {
    background: none;
    color: rgba(56, 225, 208, .6);
  }
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: clamp(20px, 3.4vw, 27px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: .035em;
  color: var(--cream);
}

.page-faq .faq-group__desc {
  margin: 8px 0 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--muted);
}

/* ---------- 折叠面板 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(12, 31, 56, .92), rgba(12, 31, 56, .7));
  transition: border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(56, 225, 208, .3);
}

.page-faq .faq-item:has(.faq-trigger[aria-expanded="true"]) {
  border-color: rgba(56, 225, 208, .38);
  background: linear-gradient(180deg, rgba(12, 31, 56, .96), rgba(9, 24, 43, .9));
}

.page-faq .faq-item__h {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}

.page-faq .faq-trigger {
  display: grid;
  grid-template-columns: var(--faq-num-col) minmax(0, 1fr) 16px;
  gap: var(--faq-gap);
  align-items: start;
  width: 100%;
  padding: 14px var(--faq-pad);
  background: none;
  border: 0;
  color: var(--cream);
  font-family: inherit;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.58;
  letter-spacing: .01em;
  text-align: left;
  cursor: pointer;
  transition: color .2s var(--ease);
}

.page-faq .faq-trigger:hover {
  color: var(--cyan-soft);
}

.page-faq .faq-trigger:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: -2px;
}

.page-faq .faq-num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .faq-q {
  display: block;
}

.page-faq .faq-sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  justify-self: end;
}

.page-faq .faq-sign::before,
.page-faq .faq-sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .25s var(--ease), opacity .25s var(--ease);
}

.page-faq .faq-sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-trigger[aria-expanded="true"] .faq-sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-panel {
  padding: 13px var(--faq-pad) 17px var(--faq-pad);
  border-top: 1px dashed var(--faq-dash);
}

@media (min-width: 600px) {
  .page-faq .faq-panel {
    padding-left: var(--faq-text-x);
  }
}

.page-faq .faq-panel p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 245, 247, .8);
}

.page-faq .link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 225, 208, .35);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .link:hover,
.page-faq .link:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

/* ---------- 客服提示 ---------- */
.page-faq .faq-help {
  position: relative;
  margin-top: clamp(26px, 4.5vw, 52px);
  padding: clamp(22px, 3.6vw, 38px);
  border: 1px solid var(--line);
  overflow: hidden;
  background:
    radial-gradient(118% 138% at 92% 0%, rgba(232, 180, 74, .13), transparent 62%),
    linear-gradient(180deg, rgba(12, 31, 56, .96), rgba(7, 20, 38, .96));
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--gold), rgba(232, 180, 74, .08));
}

.page-faq .faq-help__grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 36px);
}

.page-faq .faq-help__title {
  margin: 10px 0 0;
  font-family: var(--font-narrow);
  font-size: clamp(21px, 3.6vw, 30px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: .03em;
  color: var(--cream);
}

.page-faq .faq-help__text {
  margin: 12px 0 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-help__list {
  display: grid;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px dashed var(--faq-dash);
}

.page-faq .faq-help__list li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px dashed var(--faq-dash);
}

.page-faq .faq-help__k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-faq .faq-help__v {
  font-size: 15px;
  line-height: 1.6;
  color: var(--cream);
  word-break: break-word;
}

.page-faq .faq-help__v a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 225, 208, .35);
}

.page-faq .faq-help__v a:hover,
.page-faq .faq-help__v a:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

.page-faq .faq-help__more {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-help__media {
  margin: 0;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--ink);
}

.page-faq .faq-help__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: .86;
}

@media (min-width: 900px) {
  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }
}

/* ---------- 复制反馈 ---------- */
.page-faq .copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.page-faq .copy-btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--cyan);
  background: rgba(56, 225, 208, .08);
  border: 1px solid rgba(56, 225, 208, .35);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .copy-btn:hover {
  background: rgba(56, 225, 208, .16);
  color: var(--cyan-soft);
  border-color: rgba(56, 225, 208, .55);
}

.page-faq .copy-btn:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 2px;
}

.page-faq .copy-feedback {
  min-height: 1em;
  font-size: 12.5px;
  color: var(--gold);
}

/* ---------- 大屏微调 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-group__head {
    grid-template-columns: 96px minmax(0, 1fr);
  }

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

/* ---------- 减弱动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}