.page-faq {
  --faq-read: 66ch;
  --faq-lift: 4px;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 24px 0 44px;
  background:
    radial-gradient(115% 130% at 92% 0%, rgba(123, 77, 255, 0.34), transparent 58%),
    linear-gradient(175deg, var(--ink-2) 0%, var(--ink) 78%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: -8%;
  bottom: -90px;
  width: 48%;
  height: 160px;
  background: var(--lime);
  opacity: 0.07;
  transform: rotate(-5deg);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumbs {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2rem, 7.5vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero h1 em {
  font-style: normal;
  color: var(--lime);
  box-shadow: inset 0 -0.3em 0 rgba(184, 255, 60, 0.16);
}

.page-faq .faq-hero .lede {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: var(--step-17);
  line-height: 1.78;
  color: var(--text);
}

.page-faq .faq-hero__panel {
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  background: rgba(18, 22, 28, 0.88);
  padding: 20px;
  box-shadow: var(--shadow-1);
}

.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  background: none;
  border: 0;
  outline: none;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--step-17);
}

.page-faq .faq-search__input::placeholder {
  color: var(--stone);
}

.page-faq .faq-search:focus-within {
  border-color: var(--lime);
}

.page-faq .faq-hero__hint {
  margin: 12px 0 0;
  font-size: var(--step-13);
  line-height: 1.7;
  color: var(--stone);
}

.page-faq .faq-hero__stat {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--text);
}

.page-faq .faq-hero__stat .num {
  font-family: var(--font-mono);
  font-size: 1.05em;
  color: var(--orange);
}

/* ===== 分类索引 ===== */
.page-faq .faq-index-sec {
  padding: 48px 0 12px;
}

.page-faq .faq-index__head {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.page-faq .faq-index__head h2 {
  margin: 6px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.6vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-index__sub {
  margin: 0;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--stone);
}

.page-faq .faq-index {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-faq .faq-index__card {
  display: grid;
  gap: 6px;
  padding: 18px 18px 20px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-top: 3px solid var(--violet);
  border-radius: 2px;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-faq .faq-index__card:hover,
.page-faq .faq-index__card:focus-visible {
  transform: translateY(calc(-1 * var(--faq-lift))) rotate(-1.2deg);
  border-color: var(--lime);
  border-top-color: var(--lime);
  background: #161b23;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: var(--step-14);
  letter-spacing: 0.16em;
  color: var(--lime);
}

.page-faq .faq-index__title {
  font-size: var(--step-22);
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-index__desc {
  font-size: var(--step-13);
  line-height: 1.6;
  color: var(--stone);
}

.page-faq .faq-index__visual {
  position: relative;
  margin: 28px 0 0;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-index__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-faq .faq-index__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(118deg, rgba(11, 13, 16, 0.62), rgba(11, 13, 16, 0) 58%);
  pointer-events: none;
}

/* ===== 问答分组 ===== */
.page-faq .faq-group {
  padding: 52px 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-group__main > .sec-head {
  margin: 0 0 22px;
}

.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-sans);
  font-size: var(--step-22);
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

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

.page-faq .qa summary::before {
  content: "＋";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--lime);
  transition: color 0.2s var(--ease);
}

.page-faq .qa[open] summary::before {
  content: "－";
  color: var(--orange);
}

.page-faq .qa summary:hover,
.page-faq .qa summary:focus-visible {
  color: var(--lime);
}

.page-faq .qa__answer {
  max-width: var(--faq-read);
  padding: 0 0 20px 34px;
  font-size: var(--step-17);
  line-height: 1.78;
  color: var(--text);
}

.page-faq .qa__answer p {
  margin: 0 0 10px;
}

.page-faq .qa__answer p:last-child {
  margin-bottom: 0;
}

.page-faq .qa[open] .qa__answer {
  animation: faq-drop 0.32s var(--ease) both;
}

@keyframes faq-drop {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-group__figure {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
}

.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-faq .faq-aside {
  border-left: 2px solid var(--violet);
  padding-left: 16px;
  font-size: var(--step-13);
  line-height: 1.7;
  color: var(--stone);
}

.page-faq .faq-aside__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--step-13);
  letter-spacing: 0.14em;
  color: var(--violet-soft);
}

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

.page-faq .faq-aside li + li {
  margin-top: 10px;
}

.page-faq .faq-aside a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

/* ===== 结尾引导 ===== */
.page-faq .faq-cta {
  padding: 8px 0 72px;
}

.page-faq .faq-cta__box {
  position: relative;
  overflow: hidden;
  padding: 34px 22px 32px;
  background: linear-gradient(120deg, var(--ink-2) 0%, #171c25 100%);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.page-faq .faq-cta__box::before {
  content: "";
  position: absolute;
  right: -50px;
  top: -70px;
  width: 220px;
  height: 220px;
  background: rgba(184, 255, 60, 0.1);
  transform: rotate(-5deg);
  pointer-events: none;
}

.page-faq .faq-cta__box h2 {
  position: relative;
  margin: 6px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.6vw, 2.25rem);
  line-height: 1.18;
  color: var(--paper);
}

.page-faq .faq-cta__box p {
  position: relative;
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: var(--step-17);
  line-height: 1.78;
  color: var(--text);
}

.page-faq .faq-cta__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ===== 断点 ===== */
@media (min-width: 620px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 32px 0 58px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: end;
  }

  .page-faq .faq-index__head {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 32px;
  }

  .page-faq .faq-index__sub {
    text-align: right;
  }

  .page-faq .faq-cta__box {
    padding: 44px 40px 42px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-group {
    padding: 64px 0;
  }

  .page-faq .faq-group__grid {
    grid-template-columns: minmax(0, 1fr) 230px;
    gap: 56px;
    align-items: start;
  }
}

@media (max-width: 520px) {
  .page-faq .qa summary {
    font-size: var(--step-17);
    padding: 16px 0;
  }

  .page-faq .qa__answer {
    padding-left: 26px;
  }

  .page-faq .faq-hero__panel {
    padding: 16px;
  }
}

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

  .page-faq .faq-index__card:hover,
  .page-faq .faq-index__card:focus-visible {
    transform: none;
  }
}