.page-faq {
  --faq-accent: #ffd700;
  --faq-accent-2: #8a2be2;
  --faq-accent-3: #00e5ff;
  --faq-card: #121a3a;
  --faq-edge: #1f2a54;
  --faq-ink: #e6e9ff;
  --faq-dim: #a0a6cf;
  position: relative;
  background:
    linear-gradient(180deg, var(--night) 0%, var(--deep) 35%, var(--night) 100%);
}

/* ===== Hero 区 ===== */
.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 48px;
  overflow: hidden;
  border-bottom: 1px solid var(--faq-edge);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background:
    linear-gradient(115deg, transparent 0%, transparent 46%, rgba(138, 43, 226, 0.12) 46%, transparent 62%),
    repeating-linear-gradient(0deg, transparent 0px, transparent 3px, rgba(0, 229, 255, 0.04) 3px, rgba(0, 229, 255, 0.04) 4px);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero__frame {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}

.page-faq .faq-hero__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-faq .faq-hero__content .breadcrumbs {
  margin-bottom: 14px;
}

.page-faq .faq-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--faq-accent-3);
  text-transform: uppercase;
  margin-bottom: 10px;
  padding: 4px 10px;
  border-left: 3px solid var(--faq-accent-3);
  background: rgba(0, 229, 255, 0.08);
}

.page-faq .faq-hero__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--faq-ink);
  margin: 0 0 18px;
  max-width: 13em;
  text-transform: uppercase;
}

.page-faq .faq-hero__lead {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--faq-dim);
  max-width: 56ch;
  margin: 0 0 22px;
}

.page-faq .faq-hero__search {
  display: flex;
  align-items: stretch;
  gap: 0;
  width: 100%;
  max-width: 560px;
  background: var(--faq-card);
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.35);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-faq .faq-hero__search:focus-within {
  border-color: var(--faq-accent);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.16), 0 14px 30px rgba(0, 0, 0, 0.35);
}

.page-faq .faq-hero__search-sigil {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.25rem;
  color: var(--faq-accent);
  padding-left: 16px;
}

.page-faq .faq-hero__search-input {
  flex: 1 1 auto;
  min-width: 0;
  background: transparent;
  border: 0;
  padding: 13px 8px 13px 12px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--faq-ink);
  outline: none;
}

.page-faq .faq-hero__search-input::placeholder {
  color: rgba(160, 166, 207, 0.7);
}

.page-faq .faq-hero__search-go {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 0 20px;
  background: var(--faq-accent);
  color: #0a0e27;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 0 var(--radius) var(--radius) 0;
  border-left: 1px solid rgba(10, 14, 39, 0.3);
  transition: filter 0.25s ease;
}

.page-faq .faq-hero__search-go:hover {
  filter: brightness(1.12);
}

.page-faq .faq-hero__search-note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--faq-dim);
  margin: 10px 0 0;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 42px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--faq-edge);
}

.page-faq .faq-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-hero__stat-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  color: var(--faq-accent);
  line-height: 1;
}

.page-faq .faq-hero__stat-label {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--faq-dim);
  letter-spacing: 0.06em;
}

.page-faq .faq-hero__visual {
  margin: 0;
  position: relative;
}

.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--faq-edge);
  box-shadow: 12px 12px 0 rgba(138, 43, 226, 0.18), 0 24px 40px rgba(0, 0, 0, 0.4);
}

.page-faq .faq-hero__visual-cap {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--faq-accent-3);
  text-transform: uppercase;
  margin-top: 12px;
  text-align: right;
  padding-right: 6px;
}

/* ===== 主体区 ===== */
.page-faq .faq-main {
  padding: 48px 0 64px;
}

.page-faq .faq-main__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

/* ===== 侧边索引 ===== */
.page-faq .faq-index {
  position: sticky;
  top: 90px;
  background: var(--faq-card);
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius);
  box-shadow: 8px 8px 0 rgba(138, 43, 226, 0.12);
  padding: 20px 18px;
}

.page-faq .faq-index__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--faq-accent-3);
  text-transform: uppercase;
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-edge);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  text-decoration: none;
  color: var(--faq-ink);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  border-left: 2px solid transparent;
  transition: background 0.22s ease, border-color 0.22s ease, color 0.22s ease;
}

.page-faq .faq-index__link:hover {
  background: rgba(0, 229, 255, 0.06);
  border-left-color: var(--faq-accent-3);
  color: var(--faq-accent);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--faq-dim);
  min-width: 2.2em;
}

.page-faq .faq-index__cta {
  width: 100%;
  margin-top: 18px;
}

/* ===== 折叠面板 ===== */
.page-faq .faq-content {
  display: flex;
  flex-direction: column;
  gap: 38px;
}

.page-faq .faq-group {
  border-top: 1px solid var(--faq-edge);
  padding-top: 26px;
}

.page-faq .faq-group__header {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-bottom: 18px;
}

.page-faq .faq-group__index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--faq-accent-2);
}

.page-faq .faq-group__title {
  font-family: var(--font-head);
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--faq-ink);
  margin: 0;
  letter-spacing: 0.02em;
}

.page-faq .faq-group__count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--faq-dim);
  background: rgba(138, 43, 226, 0.14);
  border: 1px solid rgba(138, 43, 226, 0.35);
  border-radius: 999px;
  padding: 3px 10px;
}

.page-faq .faq-group__items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ===== 具体折叠项 ===== */
.page-faq .faq-item {
  background: var(--faq-card);
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.2);
  transition: border-color 0.28s ease, box-shadow 0.28s ease;
}

.page-faq .faq-item[open] {
  border-color: rgba(255, 215, 0, 0.45);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.3), 0 0 0 3px rgba(255, 215, 0, 0.06);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 17px 16px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.page-faq .faq-item__summary:hover {
  background: rgba(0, 229, 255, 0.04);
}

.page-faq .faq-item__icon {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--faq-accent);
  background: rgba(255, 215, 0, 0.1);
  border: 1px solid rgba(255, 215, 0, 0.28);
  border-radius: 6px;
  padding: 4px 8px;
}

.page-faq .faq-item__question {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--faq-ink);
}

.page-faq .faq-item__toggle {
  position: relative;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: 1px solid var(--faq-edge);
  border-radius: 50%;
  transition: transform 0.3s ease;
}

.page-faq .faq-item__toggle::before,
.page-faq .faq-item__toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--faq-accent);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.page-faq .faq-item__toggle::before {
  width: 10px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__toggle::after {
  width: 2px;
  height: 10px;
  transform: translate(-50%, -50%);
}

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

.page-faq .faq-item[open] .faq-item__toggle {
  border-color: var(--faq-accent);
  background: rgba(255, 215, 0, 0.08);
}

.page-faq .faq-item__answer {
  padding: 2px 20px 20px 52px;
  border-top: 1px dashed rgba(31, 42, 84, 0.7);
}

@media (max-width: 480px) {
  .page-faq .faq-item__answer {
    padding-left: 18px;
  }
}

.page-faq .faq-item__answer p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--faq-dim);
  margin: 14px 0 0;
}

.page-faq .faq-item__answer p::before {
  content: "A / ";
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--faq-accent-3);
  letter-spacing: 0.06em;
}

/* ===== 底部联系区 ===== */
.page-faq .faq-connect {
  position: relative;
  padding: 60px 0;
  background:
    linear-gradient(135deg, rgba(138, 43, 226, 0.2) 0%, rgba(10, 14, 39, 0.85) 55%),
    repeating-linear-gradient(0deg, transparent 0px, transparent 4px, rgba(255, 215, 0, 0.02) 4px, rgba(255, 215, 0, 0.02) 5px);
  border-top: 1px solid var(--faq-edge);
  border-bottom: 1px solid var(--faq-edge);
}

.page-faq .faq-connect__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.page-faq .faq-connect__figure {
  margin: 0;
  position: relative;
}

.page-faq .faq-connect__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 215, 0, 0.25);
  box-shadow: -10px 10px 0 rgba(255, 215, 0, 0.1), 0 28px 48px rgba(0, 0, 0, 0.5);
}

.page-faq .faq-connect__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-faq .faq-connect__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--faq-accent);
  text-transform: uppercase;
  margin: 0 0 10px;
  padding: 4px 12px;
  background: rgba(255, 215, 0, 0.08);
  border-right: 3px solid var(--faq-accent);
}

.page-faq .faq-connect__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 2.2rem;
  line-height: 1.1;
  color: var(--faq-ink);
  margin: 0 0 14px;
}

.page-faq .faq-connect__lead {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--faq-dim);
  margin: 0 0 24px;
  max-width: 52ch;
}

.page-faq .faq-connect__list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  width: 100%;
}

.page-faq .faq-connect__list li {
  display: grid;
  grid-template-columns: 5.4em 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 10px 14px;
  background: rgba(10, 14, 39, 0.55);
  border: 1px solid var(--faq-edge);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--faq-ink);
}

.page-faq .faq-connect__list-key {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--faq-accent-3);
  text-transform: uppercase;
}

.page-faq .faq-connect__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 桌面端 ≥992px ===== */
@media (min-width: 992px) {
  .page-faq .faq-hero {
    padding: 48px 0 72px;
  }

  .page-faq .faq-hero__frame {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 52px;
  }

  .page-faq .faq-main {
    padding: 68px 0 84px;
  }

  .page-faq .faq-main__layout {
    grid-template-columns: 260px 1fr;
    gap: 48px;
  }

  .page-faq .faq-connect__layout {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
  }

  .page-faq .faq-connect__list {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== 中等屏幕横向安全 ===== */
@media (min-width: 1600px) {
  .page-faq .faq-hero__frame {
    grid-template-columns: 1.05fr 0.95fr;
  }
}