.page-faq {
  --faq-edge: rgba(199, 206, 219, .16);
  --faq-edge-strong: rgba(199, 206, 219, .30);
  --faq-panel: linear-gradient(155deg, rgba(14, 27, 46, .94), rgba(7, 10, 18, .88));
  --faq-glow: rgba(47, 123, 255, .22);
  padding-bottom: clamp(48px, 8vw, 96px);
  background:
    radial-gradient(680px 340px at 6% 2%, rgba(122, 92, 255, .16), transparent 70%),
    radial-gradient(560px 300px at 96% 16%, rgba(255, 63, 164, .10), transparent 72%);
}

/* ===== 首屏：检索台 ===== */
.page-faq .faq-hero {
  position: relative;
  padding-top: clamp(24px, 4vw, 48px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -18% -8% 24% -18%;
  background: radial-gradient(closest-side, var(--faq-glow), transparent 74%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 34px;
}

.page-faq .faq-hero__copy > .eyebrow {
  margin-bottom: 14px;
}

.page-faq .faq-hero__media .media-frame {
  border: 1px solid var(--faq-edge-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface-1);
  box-shadow: var(--shadow-island);
}

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

/* 检索框 */
.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
  padding: 6px 8px 6px 20px;
  border: 1px solid var(--faq-edge-strong);
  border-radius: var(--pill);
  background: linear-gradient(120deg, rgba(47, 123, 255, .16), rgba(122, 92, 255, .10) 52%, rgba(7, 10, 18, .62));
  box-shadow: inset 0 1px 0 rgba(234, 242, 255, .07), 0 20px 46px -34px var(--blue);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--blue);
  box-shadow: inset 0 1px 0 rgba(234, 242, 255, .1), 0 0 0 4px rgba(47, 123, 255, .16);
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 15px 0;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--ice);
  font-family: var(--font-sans);
  font-size: 1rem;
  letter-spacing: .01em;
}

.page-faq .faq-search__input::placeholder {
  color: rgba(199, 206, 219, .58);
}

.page-faq .faq-search__input::-webkit-search-cancel-button {
  filter: invert(.8);
}

.page-faq .faq-search__hint {
  flex: 0 0 auto;
  padding: 0 14px 0 12px;
  border-left: 1px solid var(--faq-edge);
  color: var(--silver);
  font-size: .72rem;
  letter-spacing: .1em;
  white-space: nowrap;
}

/* 热门问题胶囊 */
.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--pill);
  background: rgba(26, 34, 51, .58);
  color: var(--silver);
  font-size: .85rem;
  line-height: 1.4;
  text-decoration: none;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease), transform .25s var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  color: var(--ice);
  border-color: var(--blue);
  background: rgba(47, 123, 255, .16);
  transform: translateY(-2px);
}

/* ===== 通用分栏 ===== */
.page-faq .faq-split {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  margin-top: 30px;
  align-items: start;
}

.page-faq .faq-split > * {
  min-width: 0;
}

/* ===== 步骤卡 ===== */
.page-faq .faq-steps__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  position: relative;
  counter-increment: faqstep;
  padding: 22px 22px 22px 66px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-md);
  background: var(--faq-panel);
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}

.page-faq .faq-step::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 22px;
  top: 24px;
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .1em;
}

.page-faq .faq-step::after {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--blue), var(--violet));
}

.page-faq .faq-step:hover {
  border-color: rgba(47, 123, 255, .45);
  transform: translateX(3px);
}

.page-faq .faq-step h3 {
  margin: 0 0 8px;
  color: var(--ice);
  font-size: 1.04rem;
  letter-spacing: -.01em;
}

.page-faq .faq-step p {
  margin: 0;
  color: var(--silver);
  font-size: .92rem;
  line-height: 1.72;
}

/* ===== 旁注 ===== */
.page-faq .faq-aside {
  padding: 22px;
  border: 1px dashed var(--faq-edge-strong);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(255, 159, 69, .10), rgba(7, 10, 18, .55));
  color: var(--silver);
  font-size: .9rem;
  line-height: 1.75;
}

.page-faq .faq-aside p {
  margin: 0 0 12px;
}

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

.page-faq .faq-aside__title {
  margin: 0 0 12px;
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
}

/* ===== 筛选速览 ===== */
.page-faq .faq-filters {
  padding: 24px 22px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-lg);
  background: var(--surface-2);
  box-shadow: var(--shadow-island);
}

.page-faq .faq-filters__title {
  margin: 0 0 16px;
  color: var(--ice);
  font-size: .74rem;
  letter-spacing: .18em;
}

.page-faq .faq-filters__list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-filters__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-edge);
  color: var(--silver);
  font-size: .88rem;
  line-height: 1.6;
}

.page-faq .faq-filters__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-filters .tag {
  flex: 0 0 auto;
}

.page-faq .faq-filters__note {
  margin: 18px 0 0;
  color: var(--silver);
  font-size: .84rem;
  line-height: 1.7;
}

.page-faq .faq-filters__note a,
.page-faq .faq-versions__foot a,
.page-faq .faq-support__links a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 123, 255, .38);
}

.page-faq .faq-filters__note a:hover,
.page-faq .faq-versions__foot a:hover,
.page-faq .faq-support__links a:hover {
  color: var(--ice);
  border-bottom-color: var(--magenta);
}

/* ===== 版本卡 ===== */
.page-faq .faq-versions {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-faq .faq-version {
  position: relative;
  padding: 26px 22px 28px;
  border: 1px solid var(--faq-edge);
  border-top-width: 3px;
  border-radius: 24px 24px 24px 8px;
  background: var(--faq-panel);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-faq .faq-version:hover {
  transform: translateY(-4px);
}

.page-faq .faq-version--15 {
  border-top-color: var(--mint);
}

.page-faq .faq-version--16 {
  border-top-color: var(--blue);
}

.page-faq .faq-version--17 {
  border-top-color: var(--magenta);
}

.page-faq .faq-version__badge {
  margin: 0 0 14px;
  color: var(--ice);
  font-size: .78rem;
  letter-spacing: .16em;
}

.page-faq .faq-version h3 {
  margin: 0 0 10px;
  color: var(--ice);
  font-size: 1.06rem;
}

.page-faq .faq-version p {
  margin: 0;
  color: var(--silver);
  font-size: .9rem;
  line-height: 1.72;
}

.page-faq .faq-versions__foot {
  margin: 22px 0 0;
  color: var(--silver);
  font-size: .86rem;
  line-height: 1.75;
}

/* ===== 售后时间线 ===== */
.page-faq .faq-timeline {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-phase {
  position: relative;
  padding: 20px 22px 20px 24px;
  border: 1px solid var(--faq-edge);
  border-left: 3px solid var(--orange);
  border-radius: 8px var(--radius-md) var(--radius-md) 8px;
  background: rgba(14, 27, 46, .72);
  transition: border-left-color .3s var(--ease), background .3s var(--ease);
}

.page-faq .faq-phase:nth-child(2) {
  border-left-color: var(--violet);
}

.page-faq .faq-phase:nth-child(3) {
  border-left-color: var(--blue);
}

.page-faq .faq-phase:nth-child(4) {
  border-left-color: var(--mint);
}

.page-faq .faq-phase:hover {
  background: rgba(14, 27, 46, .95);
}

.page-faq .faq-phase__num {
  margin: 0 0 8px;
  color: var(--orange);
  font-size: .7rem;
  letter-spacing: .18em;
}

.page-faq .faq-phase:nth-child(4) .faq-phase__num {
  color: var(--mint);
}

.page-faq .faq-phase h3 {
  margin: 0 0 8px;
  color: var(--ice);
  font-size: 1rem;
}

.page-faq .faq-phase p {
  margin: 0;
  color: var(--silver);
  font-size: .9rem;
  line-height: 1.7;
}

.page-faq .faq-aftercare__media {
  margin: 0;
  border: 1px solid var(--faq-edge-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface-1);
}

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

/* ===== 人工支持信息岛 ===== */
.page-faq .faq-support {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-faq .faq-support__island {
  padding: 24px 22px 26px;
  border: 1px solid var(--faq-edge-strong);
  border-radius: var(--radius-lg);
  background: var(--surface-2);
  box-shadow: var(--shadow-island);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-faq .faq-support__island:hover {
  transform: translateY(-4px);
  border-color: rgba(47, 123, 255, .5);
}

.page-faq .faq-support__key {
  margin: 0 0 12px;
  color: var(--magenta);
  font-size: .72rem;
  letter-spacing: .18em;
}

.page-faq .faq-support__island:nth-child(1) .faq-support__key {
  color: var(--mint);
}

.page-faq .faq-support__island:nth-child(2) .faq-support__key {
  color: var(--blue);
}

.page-faq .faq-support__value {
  margin: 0 0 12px;
  color: var(--ice);
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.page-faq .faq-support__desc {
  margin: 0;
  color: var(--silver);
  font-size: .88rem;
  line-height: 1.72;
}

.page-faq .faq-support__links {
  margin: 24px 0 0;
  color: var(--silver);
  font-size: .86rem;
  line-height: 1.8;
}

/* ===== 平板与桌面 ===== */
@media (min-width: 760px) {
  .page-faq .faq-versions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-support {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(36px, 4vw, 64px);
    align-items: center;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-faq .faq-split--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
  }

  .page-faq .faq-split--reverse .faq-aftercare__media {
    align-self: center;
  }

  .page-faq .faq-aftercare__media {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

/* ===== 动效降级 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-step,
  .page-faq .faq-version,
  .page-faq .faq-phase,
  .page-faq .faq-support__island,
  .page-faq .faq-search {
    transition: none;
    transform: none;
  }

  .page-faq .faq-chip:hover,
  .page-faq .faq-step:hover,
  .page-faq .faq-version:hover,
  .page-faq .faq-support__island:hover {
    transform: none;
  }
}