.page-faq {
  --faq-rail: 288px;
  --faq-gap: 24px;
  padding-bottom: 88px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  margin: 28px 0 4px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--chalk-muted);
}

/* ---------- 页头 ---------- */
.page-faq .faq-masthead {
  position: relative;
  padding: 28px 0 44px;
  isolation: isolate;
}

.page-faq .faq-masthead::before {
  content: "";
  position: absolute;
  inset: -60px 0 auto 0;
  height: 340px;
  background:
    radial-gradient(38% 62% at 92% 4%, rgba(255, 107, 30, 0.24), transparent 70%),
    radial-gradient(34% 56% at 2% 0%, rgba(62, 232, 176, 0.16), transparent 74%);
  filter: blur(12px);
  z-index: -1;
  pointer-events: none;
}

.page-faq .faq-masthead .eyebrow {
  color: var(--chalk-muted);
}

.page-faq .faq-masthead h1 {
  margin: 16px 0 20px;
  max-width: 17ch;
  font-size: clamp(38px, 7.6vw, 96px);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--chalk);
  text-wrap: balance;
}

.page-faq .faq-masthead__lede {
  margin: 0 0 32px;
  max-width: 58ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--chalk-muted);
}

.page-faq .faq-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-facts__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 148px;
  padding: 14px 20px;
  border: 1px solid var(--ink-500);
  border-radius: var(--r-sm);
  background: rgba(16, 26, 56, 0.72);
}

.page-faq .faq-facts__item .numeric {
  color: var(--mint);
  font-weight: 700;
  line-height: 1.1;
}

.page-faq .faq-facts__item span:last-child {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--chalk-muted);
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

/* ---------- 问题类型分段切换 ---------- */
.page-faq .tablist {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--ink-500);
  border-radius: var(--r-md);
  background: rgba(10, 16, 40, 0.82);
}

.page-faq .tablist__indicator {
  position: absolute;
  left: 0;
  bottom: 5px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--flare);
  pointer-events: none;
  transition: transform 0.32s var(--ease-spring), width 0.32s var(--ease-spring);
}

.page-faq .tab {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 12px;
  border: 0;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--chalk-muted);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  cursor: pointer;
  transition: color 0.2s var(--ease-out), background-color 0.2s var(--ease-out);
}

.page-faq .tab__count {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--chalk-muted);
  opacity: 0.72;
}

.page-faq .tab[aria-selected="true"] {
  color: var(--chalk);
  background: rgba(255, 107, 30, 0.14);
}

.page-faq .tab[aria-selected="true"] .tab__count {
  color: var(--flare);
  opacity: 1;
}

.page-faq .tab:hover {
  color: var(--chalk);
}

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

/* ---------- 面板 ---------- */
.page-faq .tabpanel {
  margin-top: 20px;
  padding: 26px 20px;
  border: 1px solid var(--ink-500);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(16, 26, 56, 0.74), rgba(6, 10, 26, 0.42));
}

.page-faq .tabpanel[hidden] {
  display: none;
}

.page-faq .tabpanel:focus-visible {
  outline: 2px solid var(--flare);
  outline-offset: 3px;
}

.page-faq .faq-panel__title {
  margin: 0 0 10px;
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-faq .faq-panel__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--chalk-muted);
}

/* ---------- 步骤条 ---------- */
.page-faq .steps {
  counter-reset: faqstep;
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .steps__item {
  counter-increment: faqstep;
  position: relative;
  padding: 18px 18px 18px 60px;
  border-left: 2px solid var(--flare);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(28, 42, 82, 0.34);
}

.page-faq .steps__item::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--flare);
}

.page-faq .steps__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--chalk);
}

.page-faq .steps__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--chalk-muted);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 28px 0 0;
  overflow: hidden;
  border: 1px solid var(--ink-500);
  border-radius: var(--r-md);
  background: var(--ink-700);
}

.page-faq .faq-figure--square {
  max-width: 380px;
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--ink-500);
  font-size: 13px;
  line-height: 1.6;
  color: var(--chalk-muted);
}

/* ---------- 小节 ---------- */
.page-faq .faq-sub {
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px dashed var(--ink-500);
}

.page-faq .faq-sub__title {
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--chalk);
}

/* ---------- 检查项列表 ---------- */
.page-faq .checks {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-sub .checks {
  margin-top: 0;
}

.page-faq .checks__item {
  position: relative;
  padding: 14px 16px 14px 44px;
  border-radius: var(--r-sm);
  background: rgba(28, 42, 82, 0.3);
  font-size: 15px;
  line-height: 1.72;
  color: var(--chalk-muted);
}

.page-faq .checks__item::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 21px;
  width: 13px;
  height: 7px;
  border-left: 2px solid var(--mint);
  border-bottom: 2px solid var(--mint);
  border-radius: 1px;
  transform: rotate(-45deg);
}

.page-faq .checks__item--warn {
  border-left: 2px solid var(--flare);
  background: rgba(255, 107, 30, 0.09);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.page-faq .checks__item--warn::before {
  content: "!";
  top: 12px;
  left: 18px;
  width: auto;
  height: auto;
  border: 0;
  transform: none;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--flare);
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-help {
  margin-top: 44px;
  padding: 30px 22px;
  border: 1px solid var(--ink-500);
  border-radius: var(--r-md);
  background:
    radial-gradient(72% 130% at 100% 0%, rgba(255, 107, 30, 0.16), transparent 66%),
    rgba(16, 26, 56, 0.72);
}

.page-faq .faq-help__kicker {
  position: relative;
  margin: 0 0 12px;
  padding-left: 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-help__kicker::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 9px;
  height: 2px;
  background: var(--flare);
  transform: translateY(-50%);
}

.page-faq .faq-help__title {
  margin: 0 0 12px;
  font-size: clamp(23px, 2.8vw, 32px);
  font-weight: 800;
  line-height: 1.22;
  color: var(--chalk);
}

.page-faq .faq-help__lede {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--chalk-muted);
}

.page-faq .faq-help__list {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--chalk-muted);
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-help__meta {
  display: grid;
  gap: 14px;
  margin: 30px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--ink-500);
}

.page-faq .faq-help__meta-item dt {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--chalk-muted);
}

.page-faq .faq-help__meta-item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--chalk);
  word-break: break-word;
}

.page-faq .faq-help__meta-item dd a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(62, 232, 176, 0.4);
}

.page-faq .faq-help__meta-item dd a:hover {
  color: var(--chalk);
}

/* ---------- 侧栏 ---------- */
.page-faq .faq-rail {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .rail-card {
  padding: 20px;
  border: 1px solid var(--ink-500);
  border-radius: var(--r-md);
  background: rgba(16, 26, 56, 0.68);
}

.page-faq .rail-card--fast {
  border-color: rgba(62, 232, 176, 0.34);
  background: linear-gradient(168deg, rgba(18, 115, 90, 0.3), rgba(16, 26, 56, 0.68));
}

.page-faq .rail-card--quiet {
  background: rgba(16, 26, 56, 0.44);
}

.page-faq .rail-card__kicker {
  position: relative;
  margin: 0 0 14px;
  padding-left: 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--mint);
}

.page-faq .rail-card__kicker::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 9px;
  height: 2px;
  background: var(--flare);
  transform: translateY(-50%);
}

.page-faq .rail-list {
  counter-reset: railstep;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .rail-list li {
  counter-increment: railstep;
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 1.68;
  color: var(--chalk);
}

.page-faq .rail-list li::before {
  content: counter(railstep);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--mint);
}

.page-faq .rail-card__text {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--chalk-muted);
}

.page-faq .rail-card__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

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

.page-faq .rail-links a {
  display: block;
  font-size: 14px;
  line-height: 1.6;
  color: var(--chalk-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.page-faq .rail-links a:hover,
.page-faq .rail-links a:focus-visible {
  color: var(--chalk);
  border-bottom-color: var(--flare);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-help__meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .page-faq .tabpanel {
    padding: 34px 32px;
    margin-top: 24px;
  }

  .page-faq .faq-help {
    padding: 40px 36px;
  }

  .page-faq .faq-facts__item {
    min-width: 176px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail);
    gap: 44px;
    align-items: start;
  }

  .page-faq .tablist {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-radius: var(--r-pill);
  }

  .page-faq .tab {
    padding: 14px 16px;
    font-size: 15px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-help__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .tab,
  .page-faq .tablist__indicator,
  .page-faq .rail-links a {
    transition: none;
  }
}