.page-faq {
  --faq-axis: 208px;
  --fc-entry: #35E6E0;
  --fc-locate: #8B7BFF;
  --fc-collect: #F2B84B;
  --fc-records: #3FD6C0;
  --fc-support: #E86A9A;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 34px 0 62px;
  background:
    radial-gradient(920px 460px at 10% -10%, rgba(53, 230, 224, 0.16), transparent 62%),
    radial-gradient(720px 400px at 94% 2%, rgba(242, 184, 75, 0.11), transparent 66%),
    linear-gradient(180deg, #05121F 0%, #0B2A45 100%);
  border-bottom: 1px solid var(--glass-line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(53, 230, 224, 0.6), transparent);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: start;
  margin-top: 22px;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 16px;
  font-size: clamp(30px, 5.2vw, 48px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--mist);
  text-shadow: 0 0 18px rgba(53, 230, 224, 0.35);
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  max-width: 46ch;
  color: var(--fog);
  font-size: 17px;
  line-height: 1.8;
}

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

.page-faq .faq-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 30px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  color: var(--fog);
  font-size: 14px;
}

.page-faq .faq-hero-stats .num {
  font-size: 21px;
  margin-right: 6px;
}

.page-faq .faq-hero-visual {
  position: relative;
  margin: 0;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(11, 42, 69, 0.5);
  box-shadow: var(--shadow-soft);
}

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

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding: 44px 0 84px;
}

/* ---------- 左侧分类轴 ---------- */
.page-faq .faq-rail {
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(7, 26, 44, 0.86), rgba(5, 18, 31, 0.7));
  padding: 20px 16px;
}

.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--fog);
  font-family: var(--font-mono);
}

.page-faq .faq-rail-list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--mist);
  font-size: 15px;
  text-decoration: none;
  transition: background 240ms var(--ease), border-color 240ms var(--ease), transform 240ms var(--ease);
}

.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  background: rgba(53, 230, 224, 0.09);
  border-left-color: var(--cyan);
  transform: translateX(2px);
}

.page-faq .faq-rail-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.05em;
}

.page-faq .faq-rail-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-faq .faq-rail-count {
  font-size: 12px;
  color: var(--fog);
}

.page-faq .faq-rail-foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--fog);
  font-size: 13px;
  line-height: 1.75;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-stream {
  display: grid;
  gap: 44px;
  min-width: 0;
}

.page-faq .faq-group {
  --fc: var(--cyan);
  position: relative;
  padding-top: 22px;
  border-top: 2px solid var(--fc);
}

.page-faq .faq-group--entry { --fc: var(--fc-entry); }
.page-faq .faq-group--locate { --fc: var(--fc-locate); }
.page-faq .faq-group--collect { --fc: var(--fc-collect); }
.page-faq .faq-group--records { --fc: var(--fc-records); }
.page-faq .faq-group--support { --fc: var(--fc-support); }

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.page-faq .faq-group-num {
  align-self: start;
  margin-top: 4px;
  padding: 3px 9px;
  border: 1px solid currentColor;
  border-radius: 999px;
  color: var(--fc);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  line-height: 1.4;
}

.page-faq .faq-group-head h2 {
  position: relative;
  margin: 0;
  padding-left: 14px;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--mist);
}

.page-faq .faq-group-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  bottom: 7px;
  width: 4px;
  border-radius: 2px;
  background: var(--fc);
  box-shadow: 0 0 14px rgba(53, 230, 224, 0.4);
}

.page-faq .faq-group-note {
  margin: 8px 0 0;
  color: var(--fog);
  font-size: 15px;
  line-height: 1.8;
  max-width: 54ch;
}

/* ---------- 问题条 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(11, 42, 69, 0.66), rgba(5, 18, 31, 0.74));
  transition: border-color 240ms var(--ease), background 240ms var(--ease);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  color: var(--mist);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
}

.page-faq .faq-item > summary::-webkit-details-marker { display: none; }
.page-faq .faq-item > summary::marker { content: ""; }

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

.page-faq .faq-q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-toggle {
  position: relative;
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  border: 1px solid var(--glass-line);
  border-radius: 50%;
  transition: border-color 260ms var(--ease), background 260ms var(--ease);
}

.page-faq .faq-toggle::before,
.page-faq .faq-toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
  transition: transform 260ms var(--ease), opacity 260ms var(--ease);
}

.page-faq .faq-toggle::before {
  width: 10px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-toggle::after {
  width: 1.5px;
  height: 10px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] {
  border-color: var(--fc);
  background: linear-gradient(180deg, rgba(13, 48, 78, 0.8), rgba(5, 18, 31, 0.88));
  box-shadow: inset 3px 0 0 var(--fc);
}

.page-faq .faq-item[open] .faq-toggle {
  border-color: var(--cyan);
  background: rgba(53, 230, 224, 0.14);
}

.page-faq .faq-item[open] .faq-toggle::after {
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(0.2);
}

.page-faq .faq-item[open] .faq-answer {
  animation: faqAnswerIn 280ms var(--ease);
}

@keyframes faqAnswerIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-answer {
  padding: 0 22px 20px;
  max-width: 64ch;
  color: var(--fog);
  font-size: 15.5px;
  line-height: 1.85;
}

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

.page-faq .faq-answer a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 224, 0.4);
  transition: border-color 200ms var(--ease);
}

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

/* ---------- 工单流程视觉 ---------- */
.page-faq .faq-flow {
  margin: 0 0 20px;
  border: 1px solid rgba(232, 106, 154, 0.35);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(74, 16, 48, 0.6), rgba(5, 18, 31, 0.6));
}

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

/* ---------- 尾部路径 ---------- */
.page-faq .faq-paths {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding-top: 8px;
}

.page-faq .faq-path {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-md);
  background: rgba(234, 242, 247, 0.05);
  text-decoration: none;
  transition: transform 240ms var(--ease), border-color 240ms var(--ease), background 240ms var(--ease);
}

.page-faq .faq-path:hover,
.page-faq .faq-path:focus-visible {
  transform: translateY(-3px);
  border-color: var(--cyan);
  background: rgba(53, 230, 224, 0.08);
}

.page-faq .faq-path-key {
  color: var(--gold);
  font-size: 16px;
  font-weight: 700;
}

.page-faq .faq-path-desc {
  color: var(--fog);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-hero-stats {
    gap: 12px 40px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 44px 0 74px;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 52px;
    margin-top: 28px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-axis) minmax(0, 1fr);
    gap: 54px;
    padding-top: 56px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    align-self: start;
    padding: 22px 18px;
  }
}

@media (min-width: 1280px) {
  .page-faq {
    --faq-axis: 236px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-answer {
    animation: none;
  }

  .page-faq .faq-toggle,
  .page-faq .faq-toggle::before,
  .page-faq .faq-toggle::after,
  .page-faq .faq-item,
  .page-faq .faq-path,
  .page-faq .faq-rail-list a {
    transition: none;
  }

  .page-faq .faq-path:hover,
  .page-faq .faq-path:focus-visible,
  .page-faq .faq-rail-list a:hover,
  .page-faq .faq-rail-list a:focus-visible {
    transform: none;
  }
}