/* ===== 支持中心 / 帮助文档 ===== */
.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(14px, 2.5vw, 26px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-mist);
}
.page-faq .breadcrumbs__link {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .breadcrumbs__link:hover,
.page-faq .breadcrumbs__link:focus-visible { color: var(--c-volt); border-bottom-color: var(--c-volt); }
.page-faq .breadcrumbs__sep { color: var(--c-rail); }
.page-faq .breadcrumbs__current { color: var(--c-chalk); }

/* 通用文字层级 */
.page-faq h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.025em;
  line-height: 1.15;
  font-size: clamp(1.5rem, 3.6vw, 2.4rem);
  color: var(--c-chalk);
}
.page-faq h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -.01em;
  font-size: 1.02rem;
  line-height: 1.4;
  color: var(--c-chalk);
}
.page-faq .faq-lead {
  max-width: 64ch;
  margin: 14px 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-mist);
}

/* ===== 首屏框景 ===== */
.page-faq .faq-hero { padding-top: clamp(16px, 3vw, 32px); }
.page-faq .faq-hero__frame {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 54px);
  border-radius: var(--radius-l);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(200, 16, 46, .30), transparent 58%),
    radial-gradient(80% 70% at 4% 100%, rgba(0, 229, 208, .16), transparent 62%),
    linear-gradient(180deg, var(--c-bay) 0%, var(--c-black) 100%);
  box-shadow: var(--shadow-float);
}
.page-faq .faq-hero__frame h1 {
  max-width: 20ch;
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.04;
  font-size: clamp(2rem, 6.2vw, 4rem);
  color: var(--c-chalk);
}
.page-faq .faq-hero__lede {
  max-width: 62ch;
  margin: 20px 0 0;
  font-size: clamp(.98rem, 1.4vw, 1.06rem);
  line-height: 1.82;
  color: rgba(242, 244, 247, .76);
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  margin-top: 32px;
  background: var(--c-rail);
  border: var(--edge);
  border-radius: var(--radius-m);
  overflow: hidden;
}
.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(22, 24, 29, .88);
}
.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  letter-spacing: -.01em;
  color: var(--c-volt);
}
.page-faq .faq-stat__label {
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .05em;
  color: var(--c-mist);
}

/* ===== 新手四步 ===== */
.page-faq .faq-start__figure { margin: clamp(24px, 3.5vw, 40px) 0 clamp(24px, 3vw, 34px); }
.page-faq .media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: var(--edge);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, var(--c-bay), var(--c-black));
}
.page-faq .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .media-frame__caption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(11, 13, 16, .74);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-mist);
}
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 26px);
}
.page-faq .faq-step {
  position: relative;
  padding-top: 18px;
  border-top: 2px solid var(--c-rail);
}
.page-faq .faq-step::after {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--c-volt);
}
.page-faq .faq-step__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-volt);
}
.page-faq .faq-step p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: rgba(242, 244, 247, .68);
}

/* ===== 分类索引 + 条目列 ===== */
.page-faq .faq-library__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(24px, 3.5vw, 40px);
}
.page-faq .faq-index {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  border: var(--edge);
  border-radius: var(--radius-m);
  background: rgba(22, 24, 29, .72);
}
.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--c-gold);
}
.page-faq .faq-index__list {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 2px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  border-radius: var(--radius-s);
  color: var(--c-chalk);
  text-decoration: none;
  font-size: .92rem;
  line-height: 1.5;
  white-space: nowrap;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--c-volt);
  border-left-color: var(--c-volt);
  background: rgba(0, 229, 208, .07);
}
.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-mist);
}
.page-faq .faq-index__more {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 10px;
  border-top: 1px solid var(--c-rail);
}
.page-faq .faq-index__more .faq-index__link { border-left-color: rgba(232, 180, 74, .35); }

.page-faq .faq-library__body {
  display: flex;
  flex-direction: column;
  gap: clamp(30px, 4vw, 52px);
  min-width: 0;
}
.page-faq .faq-library__texture { margin: 0; }

.page-faq .faq-cat { scroll-margin-top: calc(var(--bar-h) + 20px); }
.page-faq .faq-cat__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--c-rail);
}
.page-faq .faq-cat__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-volt);
}
.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  letter-spacing: -.02em;
  color: var(--c-chalk);
}
.page-faq .faq-cat__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-mist);
}

/* ===== 可展开条目（浅色卡片） ===== */
.page-faq .accordion {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-faq .accordion__item {
  position: relative;
  overflow: hidden;
  background: var(--c-blush);
  border-left: 3px solid rgba(11, 122, 114, .35);
  border-radius: var(--radius-m);
  transition: border-color .32s var(--ease);
}
.page-faq .accordion__item:hover { border-left-color: var(--c-ink-volt); }
.page-faq .accordion__item:has(.accordion__trigger[aria-expanded="true"]) { border-left-color: var(--c-volt); }

.page-faq .accordion__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  width: 100%;
  padding: 16px 18px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  color: #0B0D10;
}
.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--c-ink-volt);
  outline-offset: -2px;
  border-radius: var(--radius-m);
}
.page-faq .accordion__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-ink-volt);
}
.page-faq .accordion__q-wrap { display: block; min-width: 0; }
.page-faq .accordion__q {
  display: block;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.55;
  letter-spacing: -.005em;
  color: #0B0D10;
}
.page-faq .accordion__summary {
  display: block;
  margin-top: 5px;
  font-size: .85rem;
  line-height: 1.62;
  color: rgba(11, 13, 16, .62);
}
.page-faq .accordion__icon {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}
.page-faq .accordion__icon::before,
.page-faq .accordion__icon::after {
  content: "";
  position: absolute;
  background: var(--c-ink-volt);
  border-radius: 2px;
}
.page-faq .accordion__icon::before { left: 0; right: 0; top: 7px; height: 2px; }
.page-faq .accordion__icon::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
  transition: transform .32s var(--ease);
}
.page-faq .accordion__trigger[aria-expanded="true"] .accordion__icon::after { transform: scaleY(0); }

.page-faq .accordion__panel { overflow: hidden; }
.page-faq .accordion__panel-inner {
  padding: 0 18px 18px;
  font-size: .92rem;
  line-height: 1.78;
  color: rgba(11, 13, 16, .78);
}
.page-faq .accordion__panel-inner p { margin: 0 0 10px; }
.page-faq .accordion__panel-inner p:last-child { margin-bottom: 0; }
.page-faq .accordion__panel-inner a {
  color: var(--c-ink-volt);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 122, 114, .4);
}
.page-faq .accordion__panel-inner a:hover { border-bottom-color: var(--c-ink-volt); }

/* ===== 人工支持 ===== */
.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 40px);
}
.page-faq .faq-help__copy p {
  max-width: 62ch;
  margin: 14px 0 0;
  font-size: .98rem;
  line-height: 1.82;
  color: rgba(242, 244, 247, .72);
}
.page-faq .faq-help__copy a {
  color: var(--c-volt);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, .4);
}
.page-faq .faq-help__copy a:hover { border-bottom-color: var(--c-volt); }
.page-faq .faq-help__copy .btn { margin-top: 22px; }

.page-faq .faq-contact {
  padding: clamp(20px, 3vw, 28px);
  border: var(--edge-soft);
  border-radius: var(--radius-l);
  background: linear-gradient(160deg, rgba(22, 24, 29, .86), rgba(11, 13, 16, .94));
  box-shadow: var(--shadow-float);
}
.page-faq .faq-contact__title {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--c-gold);
}
.page-faq .faq-contact__list {
  display: grid;
  gap: 14px;
  margin: 0;
}
.page-faq .faq-contact__row { display: grid; gap: 3px; }
.page-faq .faq-contact__label {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-mist);
}
.page-faq .faq-contact__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .95rem;
  line-height: 1.6;
  color: var(--c-chalk);
  overflow-wrap: anywhere;
  word-break: break-word;
}
.page-faq .faq-contact__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--c-rail);
  font-size: .86rem;
  line-height: 1.72;
  color: var(--c-mist);
}

/* ===== 桌面端栅格 ===== */
@media (min-width: 820px) {
  .page-faq .faq-steps { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (min-width: 940px) {
  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}
@media (min-width: 1000px) {
  .page-faq .faq-library__grid {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 18px);
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    border-left: 1px solid var(--c-rail);
    padding-left: 14px;
  }
  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    margin-top: 4px;
    overflow: visible;
  }
  .page-faq .faq-index__link {
    border-radius: 0;
    padding: 9px 10px;
  }
  .page-faq .faq-index__more {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
    margin-top: 8px;
  }
  .page-faq .accordion__panel-inner { padding-left: 46px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion__item,
  .page-faq .accordion__icon::after,
  .page-faq .faq-index__link,
  .page-faq .breadcrumbs__link { transition: none; }
}