/* ===== 帮助中心 page-faq ===== */
.page-faq {
  --faq-rail-w: 172px;
  --faq-sticky-h: 88px;
  background: var(--ink);
  color: var(--paper);
}

/* ---------- 顶部人群指引（吸顶） ---------- */
.page-faq .faq-crowd {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(180deg, var(--midnight), rgba(8, 17, 28, 0.95));
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-crowd__bar-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-block: 10px;
}

.page-faq .faq-crowd__label {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .faq-crowd__tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
}

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

.page-faq .faq-crowd__tab {
  flex: none;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--paper-soft);
  font-family: inherit;
  font-size: 13px;
  line-height: 1.4;
  cursor: pointer;
  transition: color 200ms ease, border-color 200ms ease, background 200ms ease;
}

.page-faq .faq-crowd__tab:hover {
  border-color: var(--teal);
  color: var(--paper);
}

.page-faq .faq-crowd__tab:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .faq-crowd__tab[aria-selected="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
  font-weight: 700;
}

.page-faq .faq-crowd__panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  padding-block: 12px 18px;
}

.page-faq .faq-crowd__panel {
  border-left: 2px solid var(--teal);
  padding-left: 12px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--paper-soft);
}

.page-faq .faq-crowd__panel p {
  margin: 0;
}

.page-faq .faq-crowd__panel a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 163, 60, 0.42);
}

.page-faq .faq-crowd__panel a:hover {
  border-bottom-color: var(--amber);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background:
    radial-gradient(circle at 84% 6%, rgba(63, 193, 176, 0.15), transparent 52%),
    radial-gradient(circle at 8% 96%, rgba(242, 163, 60, 0.1), transparent 46%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero .shell {
  padding-block: 26px 40px;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 22px;
}

@media (min-width: 1000px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
    gap: 48px;
    margin-top: 34px;
  }
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--teal);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-size: clamp(1.9rem, 5.6vw, 3.3rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.16;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.88;
  color: var(--paper-soft);
}

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

.page-faq .image-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__quick a {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--paper);
  font-size: 13.5px;
  text-decoration: none;
  transition: border-color 200ms ease, background 200ms ease;
}

.page-faq .faq-hero__quick a:hover {
  border-color: var(--amber);
  background: rgba(242, 163, 60, 0.12);
}

/* ---------- 主栅格：左索引轨道 + 右内容 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding-block: 34px 76px;
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 56px;
    padding-block: 56px 110px;
  }
}

.page-faq .faq-rail {
  display: none;
}

@media (min-width: 1024px) {
  .page-faq .faq-rail {
    display: block;
    align-self: start;
    position: sticky;
    top: calc(var(--faq-sticky-h) + 20px);
    border-top: 2px solid var(--amber);
    padding-top: 16px;
  }
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--stone);
}

.page-faq .faq-rail__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--paper-soft);
  text-decoration: none;
  transition: color 180ms ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--amber);
}

.page-faq .faq-rail__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--teal);
}

/* ---------- 区块骨架 ---------- */
.page-faq .faq-section {
  padding-block: 34px 38px;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--faq-sticky-h) + 12px);
}

.page-faq .faq-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-section__title {
  margin: 8px 0 0;
  font-size: clamp(1.35rem, 3.6vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.28;
}

.page-faq .faq-section__lead {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--paper-soft);
}

.page-faq .faq-section__link {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--stone);
}

.page-faq .faq-section__link a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 193, 176, 0.45);
}

.page-faq .faq-section__link a:hover {
  border-bottom-color: var(--teal);
}

/* ---------- 十二步折叠卡 ---------- */
.page-faq .faq-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 26px;
}

@media (min-width: 620px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
}

.page-faq .faq-step {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  box-shadow: 0 1px 0 var(--shadow);
  overflow: hidden;
  transition: border-color 200ms ease, transform 200ms ease, box-shadow 200ms ease;
}

.page-faq .faq-step:hover {
  border-color: var(--amber);
  transform: translateY(-2px);
}

.page-faq .faq-step[open] {
  border-color: var(--amber);
  box-shadow: 0 12px 26px rgba(8, 17, 28, 0.42);
}

.page-faq .faq-step__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-step__head:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-faq .faq-step__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--amber-dark);
}

.page-faq .faq-step__title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.45;
}

.page-faq .faq-step__body {
  padding: 12px 16px 16px;
  border-top: 1px dashed var(--line-dark);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-step__body p {
  margin: 0;
}

/* ---------- 面板切换 ---------- */
.page-faq .faq-panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 26px;
}

@media (min-width: 900px) {
  .page-faq .faq-panel-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 36px;
    align-items: start;
  }
}

.page-faq .faq-paper {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  padding: 22px 20px;
  box-shadow: 0 6px 20px rgba(8, 17, 28, 0.35);
}

.page-faq .faq-paper__title {
  margin: 0;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--clay);
}

.page-faq .faq-flow {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-flow__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 14px 0;
  border-top: 1px dashed var(--line-dark);
}

.page-faq .faq-flow__item:first-child {
  border-top: 0;
  padding-top: 6px;
}

.page-faq .faq-flow__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber-dark);
}

.page-faq .faq-flow__title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.5;
}

.page-faq .faq-flow__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--ink-soft);
}

.page-faq .faq-paper__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-dark);
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

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

.page-faq .faq-qa {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 30px;
}

@media (min-width: 760px) {
  .page-faq .faq-qa {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 26px;
  }
}

.page-faq .faq-qa__item {
  border-left: 2px solid var(--clay);
  padding-left: 16px;
}

.page-faq .faq-qa__q {
  margin: 0;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.52;
}

.page-faq .faq-qa__a {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--paper-soft);
}

/* ---------- 账号与安全 ---------- */
.page-faq .faq-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

@media (min-width: 760px) {
  .page-faq .faq-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-card {
  background: var(--midnight);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 18px;
  transition: border-color 200ms ease;
}

.page-faq .faq-card:hover {
  border-color: var(--teal);
}

.page-faq .faq-card__title {
  margin: 0 0 10px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .faq-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--paper-soft);
}

/* ---------- 分类速查 ---------- */
.page-faq .faq-topics {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 26px;
}

@media (min-width: 620px) {
  .page-faq .faq-topics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-topics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px 26px;
  }
}

.page-faq .faq-topic {
  border-top: 2px solid var(--line);
  padding-top: 16px;
}

.page-faq .faq-topic__list {
  display: grid;
  gap: 9px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-topic__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-soft);
}

.page-faq .faq-topic__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--amber);
}

/* ---------- 进一步支持 ---------- */
.page-faq .faq-support {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 26px;
}

@media (min-width: 860px) {
  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 28px;
  }
}

.page-faq .faq-support__card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 24px 22px;
  background: var(--midnight);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-support__card--biz {
  border-color: rgba(242, 163, 60, 0.45);
  background: linear-gradient(160deg, rgba(242, 163, 60, 0.14), var(--midnight) 64%);
}

.page-faq .faq-support__card h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.4;
}

.page-faq .faq-support__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--paper-soft);
}

.page-faq .faq-support__list {
  display: grid;
  gap: 0;
  width: 100%;
  margin: 2px 0 0;
}

.page-faq .faq-support__list > div {
  display: flex;
  gap: 12px;
  padding-top: 9px;
  margin-top: 9px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  line-height: 1.6;
}

.page-faq .faq-support__list dt {
  flex: none;
  width: 72px;
  color: var(--stone);
}

.page-faq .faq-support__list dd {
  margin: 0;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12.5px;
  word-break: break-all;
}

.page-faq .faq-support__states {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-support__states li {
  padding: 5px 11px;
  border: 1px solid rgba(63, 193, 176, 0.42);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--teal);
}

.page-faq .faq-support__card .button {
  margin-top: 4px;
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-card,
  .page-faq .faq-crowd__tab,
  .page-faq .faq-rail__link,
  .page-faq .faq-hero__quick a {
    transition: none;
  }

  .page-faq .faq-step:hover {
    transform: none;
  }
}