.page-faq {
  --faq-line: rgba(217, 210, 192, .16);
  --faq-line-strong: rgba(217, 210, 192, .32);
  display: block;
  overflow-x: clip;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
}

.page-faq .num {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: .02em;
}

.page-faq .num--accent { color: var(--orange); }
.page-faq .num--cyan { color: var(--cyan); }

/* ── 首屏 ───────────────────────────── */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(88px, 13vw, 150px) 0 clamp(30px, 5vw, 54px);
  overflow: hidden;
  background:
    radial-gradient(90% 72% at 88% 4%, rgba(53, 240, 200, .12), transparent 62%),
    radial-gradient(72% 62% at 2% 96%, rgba(255, 90, 31, .16), transparent 68%),
    linear-gradient(158deg, #0B1F1A 0%, #06120F 100%);
}

.page-faq .faq-hero__sweep {
  position: absolute;
  left: 46%;
  right: -10%;
  bottom: -34%;
  height: 74%;
  pointer-events: none;
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 100%);
  background: linear-gradient(118deg, rgba(255, 90, 31, .20), rgba(255, 90, 31, 0) 74%);
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, .95fr);
  gap: clamp(22px, 4vw, 52px);
  align-items: start;
  margin-top: clamp(18px, 3vw, 32px);
}

.page-faq .faq-hero__lead h1 {
  margin: 10px 0 16px;
  font-size: clamp(27px, 4.8vw, 50px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero__desc {
  margin: 0;
  max-width: 44em;
  color: var(--fog);
  font-size: clamp(15px, 1.6vw, 16.5px);
  line-height: 1.78;
}

.page-faq .faq-hero__facts {
  display: grid;
  gap: 1px;
  background: var(--faq-line-strong);
  border: 1px solid var(--faq-line-strong);
}

.page-faq .faq-hero__fact {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0;
  padding: 16px 18px;
  background: var(--card);
}

.page-faq .faq-hero__fact .num {
  flex: none;
  min-width: 76px;
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1;
}

.page-faq .faq-hero__fact-t {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--fog);
}

/* ── 快速跳转条 ─────────────────────── */
.page-faq .faq-jump {
  background: var(--ink-deep);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-jump__inner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 11px;
  padding-bottom: 11px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-jump__label {
  flex: none;
  margin-right: 4px;
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--fog);
}

.page-faq .faq-jump__chip {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border: 1px solid var(--faq-line-strong);
  border-radius: 2px;
  color: var(--paper);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s var(--ease), background-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-jump__chip .num {
  font-size: 13px;
  color: var(--orange);
}

.page-faq .faq-jump__chip:hover,
.page-faq .faq-jump__chip:focus-visible {
  border-color: var(--orange);
  background: rgba(255, 90, 31, .14);
}

.page-faq .faq-jump__chip--cyan {
  border-color: var(--rule-cyan);
  color: var(--cyan);
}

.page-faq .faq-jump__chip--cyan:hover,
.page-faq .faq-jump__chip--cyan:focus-visible {
  border-color: var(--cyan);
  background: rgba(53, 240, 200, .12);
}

/* ── 阶段分区 ───────────────────────── */
.page-faq .faq-stage {
  padding: clamp(44px, 7vw, 84px) 0;
  background: var(--ink);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-stage--deep { background: var(--ink-deep); }

.page-faq .faq-stage__grid {
  display: grid;
  grid-template-columns: minmax(0, .78fr) minmax(0, 1.65fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: start;
}

.page-faq .faq-stage__num {
  display: block;
  margin-bottom: 10px;
  font-size: clamp(52px, 8.4vw, 94px);
  line-height: .86;
  color: rgba(53, 240, 200, .15);
  -webkit-text-stroke: 1px rgba(53, 240, 200, .58);
}

.page-faq .faq-stage__num--orange {
  color: rgba(255, 90, 31, .16);
  -webkit-text-stroke-color: rgba(255, 90, 31, .60);
}

.page-faq .faq-stage__aside h2 {
  margin: 0 0 12px;
  font-size: clamp(21px, 3vw, 32px);
  line-height: 1.3;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-stage__note {
  margin: 0;
  max-width: 32em;
  color: var(--fog);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .faq-stage__body { min-width: 0; }

/* ── 配图 ───────────────────────────── */
.page-faq .faq-figure {
  margin: 0 0 16px;
  border: 1px solid var(--faq-line-strong);
  background: var(--card);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--faq-line);
  color: var(--fog);
  font-size: 13px;
  line-height: 1.6;
}

.page-faq .faq-break {
  margin: 0;
  padding: clamp(24px, 4vw, 46px) 0;
  background: var(--ink-deep);
}

.page-faq .faq-break img {
  display: block;
  width: 100%;
  max-width: 720px;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-line);
}

.page-faq .faq-break figcaption {
  max-width: 720px;
  margin-top: 10px;
  color: var(--fog);
  font-size: 13px;
  line-height: 1.6;
}

/* ── 折叠问答 ───────────────────────── */
.page-faq .qa-item {
  position: relative;
  margin-bottom: 10px;
  border: 1px solid var(--faq-line);
  border-radius: 3px;
  background: rgba(28, 42, 38, .55);
  overflow: hidden;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .qa-item[open] {
  border-color: var(--rule-cyan);
  background: rgba(28, 42, 38, .9);
}

.page-faq .qa-item[open]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(53, 240, 200, .55);
}

.page-faq .qa-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.6;
  transition: color .2s var(--ease);
}

.page-faq .qa-item__q::-webkit-details-marker { display: none; }
.page-faq .qa-item__q::marker { content: ""; }

.page-faq .qa-item__q:hover { color: var(--orange-soft); }

.page-faq .qa-item__text { min-width: 0; }

.page-faq .qa-item__sign {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  margin-left: auto;
}

.page-faq .qa-item__sign::before,
.page-faq .qa-item__sign::after {
  content: "";
  position: absolute;
  background: var(--orange-soft);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .qa-item__sign::before { left: 0; right: 0; top: 8px; height: 2px; }
.page-faq .qa-item__sign::after { top: 0; bottom: 0; left: 8px; width: 2px; }

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

.page-faq .qa-item__a {
  padding: 0 18px 18px;
  color: var(--fog);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-faq .qa-item[open] .qa-item__a {
  animation: page-faq-fade .28s var(--ease);
}

@keyframes page-faq-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

.page-faq .qa-item__a p { margin: 0 0 8px; }
.page-faq .qa-item__a p:last-child { margin-bottom: 0; }
.page-faq .qa-item__a strong { color: var(--paper); font-weight: 700; }

.page-faq .qa-steps {
  display: grid;
  gap: 8px;
  margin: 2px 0 12px;
  padding: 0;
  list-style: none;
}

.page-faq .qa-steps li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.page-faq .qa-steps__n {
  flex: none;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  color: var(--paper);
  font-size: 12.5px;
  line-height: 1;
}

/* ── 文件格式卡 ─────────────────────── */
.page-faq .faq-formats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.page-faq .format-card {
  padding: 16px 18px 18px;
  border: 1px solid var(--faq-line);
  border-top: 3px solid var(--cream);
  border-radius: 2px;
  background: var(--card);
}

.page-faq .format-card--csv { border-top-color: var(--cyan); }
.page-faq .format-card--xlsx { border-top-color: var(--orange); }

.page-faq .format-card .h-card {
  margin: 10px 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .format-card p {
  margin: 0;
  color: var(--fog);
  font-size: 13.5px;
  line-height: 1.72;
}

/* ── 账号与反馈 ─────────────────────── */
.page-faq .faq-support {
  padding: clamp(44px, 7vw, 84px) 0;
  background: var(--ink);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(20px, 3.6vw, 44px);
  align-items: start;
}

.page-faq .faq-support__col h2 {
  margin: 8px 0 12px;
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-support__col > p {
  margin: 0;
  max-width: 42em;
  color: var(--fog);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-faq .faq-plain {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-plain--tight { margin-top: 10px; }

.page-faq .faq-plain li {
  position: relative;
  padding-left: 20px;
  color: var(--fog);
  font-size: 14.5px;
  line-height: 1.7;
}

.page-faq .faq-plain li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 7px;
  height: 7px;
  background: var(--cyan);
}

.page-faq .faq-support__card {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--rule-cyan);
  border-radius: 3px;
  background: linear-gradient(160deg, rgba(53, 240, 200, .10), rgba(28, 42, 38, .92));
}

.page-faq .faq-support__card .h-card {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-support__card > p {
  margin: 0;
  color: var(--fog);
  font-size: 14px;
  line-height: 1.72;
}

.page-faq .faq-support__contact {
  margin: 16px 0 14px;
  padding-top: 14px;
  border-top: 1px solid var(--rule-cyan);
  color: var(--paper);
  font-size: 13.5px;
  line-height: 1.75;
}

/* ── 结尾 ───────────────────────────── */
.page-faq .faq-cta {
  padding: clamp(40px, 6vw, 74px) 0 clamp(56px, 8vw, 96px);
  background: linear-gradient(180deg, #0B1F1A 0%, #06120F 100%);
}

.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(22px, 4vw, 48px);
  align-items: center;
  padding: clamp(22px, 3.6vw, 40px);
  border: 1px solid var(--faq-line-strong);
  border-left: 4px solid var(--orange);
  border-radius: 3px;
  background: rgba(28, 42, 38, .55);
}

.page-faq .faq-cta__text h2 {
  margin: 8px 0 10px;
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 900;
  line-height: 1.28;
  color: var(--paper);
}

.page-faq .faq-cta__text p {
  margin: 0;
  max-width: 40em;
  color: var(--fog);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

/* ── 响应式 ─────────────────────────── */
@media (max-width: 900px) {
  .page-faq .faq-hero__grid,
  .page-faq .faq-stage__grid,
  .page-faq .faq-support__grid,
  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-stage__num {
    margin-bottom: 4px;
    font-size: clamp(44px, 13vw, 66px);
  }

  .page-faq .faq-cta__actions { justify-content: flex-start; }
}

@media (max-width: 760px) {
  .page-faq .faq-formats { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  .page-faq .faq-hero__fact {
    padding: 14px 15px;
    gap: 10px;
  }

  .page-faq .faq-hero__fact .num { min-width: 62px; }

  .page-faq .qa-item__q { padding: 14px; }
  .page-faq .qa-item__a { padding: 0 14px 16px; }
  .page-faq .faq-stage__note { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item[open] .qa-item__a { animation: none; }
  .page-faq .qa-item__sign::before,
  .page-faq .qa-item__sign::after,
  .page-faq .qa-item,
  .page-faq .qa-item__q,
  .page-faq .faq-jump__chip { transition: none; }
}