.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(24px, 4vw, 40px) clamp(36px, 6vw, 68px);
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -28%;
  right: -12%;
  width: min(720px, 82vw);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(108, 77, 255, 0.32), rgba(108, 77, 255, 0) 64%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hair-dim) 1px, transparent 1px),
    linear-gradient(90deg, var(--hair-dim) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(circle at 74% 26%, rgba(0, 0, 0, 0.7), transparent 68%);
  mask-image: radial-gradient(circle at 74% 26%, rgba(0, 0, 0, 0.7), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumb {
  position: relative;
  z-index: 2;
  margin-bottom: clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

.page-faq .faq-hero-copy h1 {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-size: clamp(2.1rem, 5.2vw, 4rem);
  line-height: 1.14;
  letter-spacing: 0.04em;
  color: var(--paper);
  max-width: 15em;
}

.page-faq .faq-hero-copy .lede {
  max-width: 58ch;
  color: var(--stargray);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-hero-visual {
  position: relative;
  border: 1px solid var(--hair-strong);
  border-radius: 2px;
  overflow: hidden;
  box-shadow: var(--shadow-panel);
}

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

@media (min-width: 960px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
  }
}

/* ---------- 主体：索引 + 问答 ---------- */

.page-faq .faq-body-title {
  margin: 0;
}

.page-faq .faq-body-inner {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-faq .faq-rail {
  padding: 20px 18px 22px;
  border: 1px solid var(--hair);
  border-radius: 2px;
  background:
    linear-gradient(180deg, rgba(14, 22, 48, 0.9), rgba(7, 11, 26, 0.55));
}

.page-faq .faq-rail-title {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--electric);
  font-family: var(--font-mono);
  text-transform: uppercase;
}

.page-faq .faq-rail-hint {
  margin: 8px 0 16px;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--rockgray);
}

.page-faq .faq-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-rail-list li a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-block: 7px;
  font-size: var(--fs-14);
  line-height: 1.45;
  color: var(--stargray);
  text-decoration: none;
  border-bottom: 1px dashed var(--hair-dim);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-rail-list li:last-child a {
  border-bottom: 0;
}

.page-faq .faq-rail-list li a:hover,
.page-faq .faq-rail-list li a:focus-visible {
  color: var(--electric);
  border-color: var(--electric);
}

.page-faq .faq-rail-num {
  flex: none;
  min-width: 2ch;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--nebula);
}

.page-faq .faq-rail-list li a:hover .faq-rail-num,
.page-faq .faq-rail-list li a:focus-visible .faq-rail-num {
  color: var(--electric);
}

@media (min-width: 560px) and (max-width: 999px) {
  .page-faq .faq-rail-list {
    columns: 2;
    column-gap: 26px;
  }
  .page-faq .faq-rail-list li {
    break-inside: avoid;
    -webkit-column-break-inside: avoid;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body-inner {
    grid-template-columns: minmax(0, 264px) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
    max-height: calc(100vh - var(--topbar-h) - 48px);
    overflow-y: auto;
  }
}

/* ---------- 问题组 ---------- */

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 60px);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-group-mark {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--void);
  background: var(--electric);
  border-radius: 2px;
}

.page-faq .faq-group-head .section-title {
  margin: 0;
  font-size: clamp(1.35rem, 2.6vw, 2rem);
  line-height: 1.3;
  letter-spacing: 0.03em;
  color: var(--paper);
}

/* ---------- 单个问答 ---------- */

.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  border: 1px solid var(--hair);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(14, 22, 48, 0.78), rgba(7, 11, 26, 0.5));
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-faq .qa:hover {
  border-color: var(--hair-strong);
}

.page-faq .qa .expander-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px 18px;
  text-align: left;
  background: none;
  border: 0;
  color: var(--paper);
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  transition: color 0.2s ease;
}

.page-faq .qa .expander-btn:hover {
  color: var(--electric);
}

.page-faq .qa .expander-btn:focus-visible {
  outline: 2px solid var(--electric);
  outline-offset: -2px;
}

.page-faq .qa .expander-btn[aria-expanded="true"] {
  color: var(--electric);
}

.page-faq .qa-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--rockgray);
  transition: color 0.2s ease;
}

.page-faq .qa .expander-btn[aria-expanded="true"] .qa-num {
  color: var(--gold);
}

.page-faq .qa-title {
  flex: 1;
  min-width: 0;
  font-size: var(--fs-16);
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: 0.02em;
}

.page-faq .qa .exp-icon {
  flex: none;
  color: var(--stargray);
  transition: transform 0.25s ease, color 0.2s ease;
}

.page-faq .qa .expander-btn[aria-expanded="true"] .exp-icon {
  color: var(--electric);
  transform: rotate(180deg);
}

.page-faq .qa .expander-panel {
  padding: 0 18px 18px;
}

.page-faq .qa .expander-panel[hidden] {
  display: none;
}

.page-faq .qa-copy {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--hair-dim);
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--stargray);
  max-width: 68ch;
}

@media (min-width: 720px) {
  .page-faq .qa .expander-btn {
    padding: 18px 22px;
    gap: 18px;
  }
  .page-faq .qa .expander-panel {
    padding: 0 22px 22px 58px;
  }
  .page-faq .qa-title {
    font-size: var(--fs-18);
  }
}

/* ---------- 入口路线 ---------- */

.page-faq .faq-path {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--hair);
}

.page-faq .faq-path::before {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: min(620px, 76vw);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(34, 211, 238, 0.16), rgba(34, 211, 238, 0) 66%);
  pointer-events: none;
}

.page-faq .faq-path-inner {
  position: relative;
  display: grid;
  gap: clamp(30px, 5vw, 56px);
}

.page-faq .faq-path-copy .lede {
  margin-top: 14px;
  max-width: 52ch;
  color: var(--stargray);
}

.page-faq .path-steps {
  list-style: none;
  margin: clamp(24px, 4vw, 36px) 0;
  padding: 0;
}

.page-faq .path-step {
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 16px;
  padding-block: 20px;
  border-top: 1px solid var(--hair);
}

.page-faq .path-step:last-child {
  border-bottom: 1px solid var(--hair);
}

.page-faq .path-num {
  font-family: var(--font-mono);
  font-size: var(--fs-24);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--electric);
  padding-top: 3px;
}

.page-faq .path-body h3 {
  margin: 0 0 8px;
  font-size: var(--fs-18);
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-faq .path-body p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--stargray);
  max-width: 46ch;
}

.page-faq .faq-path-visual {
  border: 1px solid var(--hair-strong);
  border-radius: 2px;
  overflow: hidden;
  box-shadow: var(--shadow-panel);
}

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

@media (min-width: 940px) {
  .page-faq .faq-path-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    align-items: center;
  }
  .page-faq .faq-path-visual {
    order: 2;
  }
}

/* ---------- 联系与留言 ---------- */

.page-faq .faq-reach {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--hair);
}

.page-faq .faq-reach::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -8%;
  width: min(560px, 70vw);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(242, 184, 75, 0.14), rgba(242, 184, 75, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-reach-inner {
  position: relative;
  display: grid;
  gap: clamp(28px, 4.6vw, 52px);
}

.page-faq .faq-reach-copy .lede {
  margin-top: 14px;
  max-width: 46ch;
  color: var(--stargray);
}

.page-faq .faq-reach-copy .btn {
  margin-top: clamp(20px, 3vw, 28px);
}

.page-faq .reach-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: 2px;
  overflow: hidden;
}

.page-faq .reach-item {
  padding: 18px 20px;
  background: var(--night);
  border-left: 2px solid transparent;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.page-faq .reach-item:hover {
  border-left-color: var(--gold);
  background: #101a38;
}

.page-faq .reach-label {
  margin: 0 0 6px;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--rockgray);
  font-family: var(--font-mono);
}

.page-faq .reach-value {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .reach-item:nth-child(2) .reach-value {
  color: var(--gold);
}

.page-faq .reach-note {
  margin: 6px 0 0;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--stargray);
}

@media (min-width: 560px) {
  .page-faq .reach-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 940px) {
  .page-faq .faq-reach-inner {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
  }
  .page-faq .reach-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 响应式收尾 ---------- */

@media (max-width: 560px) {
  .page-faq .faq-rail {
    padding: 16px 14px 18px;
  }
  .page-faq .qa .expander-btn {
    gap: 10px;
    padding: 14px 14px;
  }
  .page-faq .qa .expander-panel {
    padding: 0 14px 16px;
  }
  .page-faq .path-step {
    grid-template-columns: 2.1rem 1fr;
    gap: 12px;
  }
  .page-faq .path-num {
    font-size: var(--fs-18);
  }
  .page-faq .reach-item {
    padding: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa .expander-btn,
  .page-faq .qa .exp-icon,
  .page-faq .faq-rail-list li a,
  .page-faq .reach-item {
    transition: none;
  }
  .page-faq .qa .expander-btn[aria-expanded="true"] .exp-icon {
    transform: none;
  }
}