.page-faq {
  --faq-rail-w: 258px;
  --faq-radius: 14px;
  background: linear-gradient(180deg, #08111F 0%, #0C1B2E 38%, #08111F 100%);
  color: var(--paper-50);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(1.75rem, 5vw, 3.25rem) clamp(2rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--line);
  isolation: isolate;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 100%;
  background:
    radial-gradient(52% 76% at 10% 0%, rgba(63, 224, 208, 0.16), transparent 68%),
    radial-gradient(38% 60% at 96% 12%, rgba(242, 180, 92, 0.09), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.page-faq .faq-hero__inner {
  position: relative;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(1rem, 2.5vw, 1.75rem);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-faq .faq-hero h1 {
  margin: 0.7rem 0 0;
  max-width: 22ch;
  font-family: var(--font-head);
  font-size: var(--fs-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.012em;
  text-wrap: balance;
}

.page-faq .faq-hero .lede {
  margin: 1.15rem 0 0;
  max-width: 48ch;
  color: var(--rock-300);
  font-size: 1rem;
  line-height: 1.85;
}

.page-faq .faq-hero__side {
  display: grid;
  gap: 1rem;
  align-content: start;
  padding: clamp(1.1rem, 2.6vw, 1.6rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--glass);
  backdrop-filter: blur(12px);
}

/* ---------- 搜索条 ---------- */
.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.95rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(8, 17, 31, 0.7);
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--cyan-400);
  box-shadow: 0 0 0 3px rgba(63, 224, 208, 0.16);
}

.page-faq .faq-search__icon {
  flex: none;
  width: 18px;
  height: 18px;
  color: var(--cyan-400);
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--paper-50);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.page-faq .faq-search__input::placeholder {
  color: rgba(200, 210, 220, 0.55);
}

.page-faq .faq-search__hint {
  margin: 0;
  font-size: var(--fs-tag);
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: rgba(200, 210, 220, 0.66);
}

/* ---------- 首屏数据 ---------- */
.page-faq .faq-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-fact {
  display: grid;
  gap: 0.15rem;
  min-width: 0;
}

.page-faq .faq-fact__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold-400);
}

.page-faq .faq-fact__label {
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--rock-300);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding-block: clamp(2.25rem, 5vw, 4.25rem) clamp(3rem, 6vw, 5.5rem);
}

.page-faq .faq-shell {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2rem);
}

.page-faq .faq-rail-wrap {
  position: relative;
  min-width: 0;
}

/* ---------- 左栏目录 ---------- */
.page-faq .faq-rail {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.4rem;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-rail .index-rail__item {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(12, 27, 46, 0.7);
  color: var(--rock-300);
  font-size: 0.8125rem;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-rail .index-rail__num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

.page-faq .faq-rail .index-rail__item:hover {
  border-color: var(--line-strong);
  color: var(--paper-50);
}

.page-faq .faq-rail .index-rail__item[aria-current] {
  background: rgba(63, 224, 208, 0.13);
  border-color: var(--line-strong);
  color: var(--paper-50);
}

/* ---------- 内容流 ---------- */
.page-faq .faq-stream {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: 110px;
  min-width: 0;
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.35rem 1rem;
  align-items: start;
  padding-bottom: 1.1rem;
  margin-bottom: 1.6rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-section__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
  color: rgba(63, 224, 208, 0.4);
}

.page-faq .faq-section__head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--fs-h2);
  font-weight: 700;
  line-height: 1.2;
}

.page-faq .faq-section__sub {
  margin: 0.6rem 0 0;
  max-width: 62ch;
  color: var(--rock-300);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* ---------- 三步条 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  padding: 1.05rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(18, 38, 61, 0.92), rgba(12, 27, 46, 0.92));
}

.page-faq .faq-step__node {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: rgba(63, 224, 208, 0.12);
  color: var(--cyan-200);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
}

.page-faq .faq-step__body h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
}

.page-faq .faq-step__body p {
  margin: 0;
  color: var(--rock-300);
  font-size: 0.875rem;
  line-height: 1.8;
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-qa {
  display: grid;
  gap: 0.6rem;
  min-width: 0;
}

.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: rgba(12, 27, 46, 0.74);
  overflow: hidden;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--line-strong);
  background: rgba(18, 38, 61, 0.9);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.9rem 1.05rem;
  cursor: pointer;
  list-style: none;
  color: var(--paper-50);
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
}

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

.page-faq .qa__idx {
  flex: none;
  padding-top: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

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

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 0.35rem;
  margin-left: auto;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan-400);
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 1.05rem 1.05rem 2.45rem;
  color: var(--rock-300);
  font-size: 0.9375rem;
  line-height: 1.85;
}

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

.page-faq .qa__a a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 移动端与批次 ---------- */
.page-faq .faq-batch {
  display: grid;
  gap: 1.4rem;
  min-width: 0;
}

.page-faq .faq-batch__scale {
  padding: 1.1rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: rgba(8, 17, 31, 0.72);
}

.page-faq .faq-batch__scale-title {
  margin: 0;
  font-size: var(--fs-tag);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rock-300);
}

.page-faq .faq-batch__ticks {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.9rem;
}

.page-faq .faq-tick {
  flex: 1 1 0;
  padding: 0.5rem 0.35rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--rock-300);
}

.page-faq .faq-tick--current {
  border-color: rgba(242, 180, 92, 0.55);
  background: rgba(242, 180, 92, 0.13);
  color: var(--gold-200);
}

.page-faq .faq-batch__scale-note {
  margin: 0.85rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--rock-300);
}

.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--ink-950);
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--rock-300);
}

/* ---------- 操作路径 ---------- */
.page-faq .faq-path {
  list-style: none;
  margin: 0 0 1.9rem;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-path__item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1rem 1.05rem;
  border: 1px solid var(--line);
  border-left: 2px solid rgba(63, 224, 208, 0.4);
  border-radius: 4px var(--faq-radius) var(--faq-radius) 4px;
  background: rgba(12, 27, 46, 0.62);
}

.page-faq .faq-path__num {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  letter-spacing: 0.05em;
  color: var(--cyan-400);
}

.page-faq .faq-path__body h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
}

.page-faq .faq-path__body p {
  margin: 0;
  color: var(--rock-300);
  font-size: 0.875rem;
  line-height: 1.8;
}

/* ---------- 联系提示 ---------- */
.page-faq .faq-help {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-help__panel {
  padding: 1.25rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: rgba(18, 38, 61, 0.72);
}

.page-faq .faq-help__panel h3 {
  margin: 0 0 0.8rem;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 700;
}

.page-faq .faq-help__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-help__list li {
  position: relative;
  padding-left: 1.15rem;
  color: var(--rock-300);
  font-size: 0.875rem;
  line-height: 1.8;
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan-400);
}

.page-faq .faq-help__aside {
  display: grid;
  gap: 0.7rem;
  align-content: start;
  padding: 1.3rem;
  border: 1px solid rgba(63, 224, 208, 0.3);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(63, 224, 208, 0.09), rgba(8, 17, 31, 0.7));
}

.page-faq .faq-help__aside .eyebrow {
  margin: 0;
}

.page-faq .faq-mail {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.6vw, 1.25rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--gold-400);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__note {
  margin: 0;
  color: var(--rock-300);
  font-size: 0.875rem;
  line-height: 1.8;
}

.page-faq .faq-help__aside .btn {
  justify-self: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .page-faq .faq-step + .faq-step::before {
    content: "";
    position: absolute;
    left: -1.1rem;
    top: 2.15rem;
    width: 1.1rem;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(63, 224, 208, 0.4));
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    gap: 1.25rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-qa--two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 0.7rem;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(2rem, 3.5vw, 3.5rem);
    align-items: start;
  }

  .page-faq .faq-rail-wrap {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-rail {
    display: grid;
    gap: 0.2rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail .index-rail__item {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border-color: transparent;
    border-radius: 10px;
    background: transparent;
    white-space: normal;
    font-size: 0.875rem;
  }

  .page-faq .faq-rail .index-rail__item[aria-current] {
    border-color: var(--line-strong);
  }

  .page-faq .faq-batch {
    grid-template-columns: 176px minmax(0, 1fr);
    grid-template-areas:
      "scale qa"
      "scale media";
    gap: 1.5rem 2rem;
    align-items: start;
  }

  .page-faq .faq-batch__scale {
    grid-area: scale;
  }

  .page-faq .faq-batch__ticks {
    flex-direction: column;
  }

  .page-faq .faq-batch__qa {
    grid-area: qa;
  }

  .page-faq .faq-figure--media {
    grid-area: media;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-section__head {
    gap: 0.5rem 1.4rem;
  }

  .page-faq .faq-section__num {
    font-size: 1.75rem;
  }
}