.page-faq {
  --faq-accent: var(--signal-cyan);
  display: block;
  overflow-x: clip;
}

.page-faq .faq-cats,
.page-faq .faq-block,
.page-faq .faq-mini {
  scroll-margin-top: 96px;
}

.page-faq #cat-signup { --block-accent: var(--signal-cyan); }
.page-faq #cat-data { --block-accent: var(--signal-orange); }
.page-faq #cat-mobile { --block-accent: var(--signal-violet); }
.page-faq #cat-account { --block-accent: var(--signal-teal); }
.page-faq #cat-content { --block-accent: var(--signal-cyan); }
.page-faq #cat-biz { --block-accent: var(--signal-orange); }

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  display: grid;
  gap: 26px;
  padding: clamp(24px, 5vw, 48px) 0 clamp(10px, 2vw, 20px);
}

.page-faq .faq-intro h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(34px, 8vw, 58px);
  line-height: 1.08;
  letter-spacing: .01em;
  color: var(--text-bright);
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-body);
}

.page-faq .faq-intro-side {
  padding: 20px 20px 22px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-quicklist {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-quicklist li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-body);
}

.page-faq .faq-quicklist .data-num {
  font-size: 13px;
  color: var(--signal-cyan);
}

.page-faq .faq-side-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: var(--line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---------- 分类目录 ---------- */
.page-faq .faq-cats {
  padding-top: clamp(28px, 5vw, 54px);
}

.page-faq .faq-cat-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-faq .faq-cat-grid > li { display: flex; }

.page-faq .faq-cat-grid > li:nth-child(1) { --faq-accent: var(--signal-cyan); }
.page-faq .faq-cat-grid > li:nth-child(2) { --faq-accent: var(--signal-orange); }
.page-faq .faq-cat-grid > li:nth-child(3) { --faq-accent: var(--signal-violet); }
.page-faq .faq-cat-grid > li:nth-child(4) { --faq-accent: var(--signal-teal); }
.page-faq .faq-cat-grid > li:nth-child(5) { --faq-accent: var(--signal-cyan); }
.page-faq .faq-cat-grid > li:nth-child(6) { --faq-accent: var(--signal-orange); }

.page-faq .faq-cat-card {
  position: relative;
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 9px;
  padding: 20px 20px 22px;
  border: var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--glass);
  color: var(--text-bright);
  text-decoration: none;
  overflow: hidden;
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.page-faq .faq-cat-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--faq-accent), rgba(5, 11, 24, 0) 78%);
}

.page-faq .faq-cat-card:hover,
.page-faq .faq-cat-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--faq-accent);
  box-shadow: var(--shadow-panel);
  outline: none;
}

.page-faq .faq-cat-card:focus-visible {
  outline: 2px solid var(--signal-cyan);
  outline-offset: 2px;
}

.page-faq .faq-cat-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--faq-accent);
}

.page-faq .faq-cat-name {
  font-family: var(--font-ui);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-cat-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-faq .faq-cat-figure {
  margin: clamp(22px, 4vw, 38px) 0 0;
}

/* ---------- 区块骨架 ---------- */
.page-faq .faq-block {
  padding-top: clamp(36px, 6vw, 68px);
}

.page-faq .faq-block-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px 18px;
  align-items: start;
  padding-bottom: 18px;
  margin-bottom: clamp(20px, 3vw, 30px);
  border-bottom: var(--line-soft);
}

.page-faq .faq-block-num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 32px);
  line-height: 1.05;
  color: var(--block-accent, var(--signal-cyan));
  opacity: .9;
}

.page-faq .faq-split {
  row-gap: 28px;
  align-items: start;
}

.page-faq .faq-sub {
  margin: 0 0 14px;
  font-family: var(--font-ui);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-bright);
}

.page-faq .faq-steps + .faq-sub {
  margin-top: 30px;
}

/* ---------- 分步列表 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faqstep;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding: 14px 18px 14px 54px;
  border-left: 2px solid var(--block-accent, var(--signal-cyan));
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: linear-gradient(90deg, rgba(18, 36, 74, .58), rgba(10, 23, 48, .16));
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-body);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--block-accent, var(--signal-cyan));
}

.page-faq .faq-steps--warm {
  --block-accent: var(--signal-orange);
}

.page-faq .faq-step-figure {
  margin: 0;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-accordion {
  border-top: var(--line-soft);
}

.page-faq .faq-accordion--tight {
  margin-top: 4px;
}

.page-faq .faq-item {
  border-bottom: var(--line-soft);
}

.page-faq .faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 17px 4px 17px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-bright);
  transition: color var(--ease);
}

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

.page-faq .faq-q:hover,
.page-faq .faq-q:focus-visible {
  color: var(--signal-cyan);
  outline: none;
}

.page-faq .faq-q:focus-visible .faq-mark {
  outline: 2px solid var(--signal-cyan);
  outline-offset: 4px;
  border-radius: 2px;
}

.page-faq .faq-q-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--block-accent, var(--signal-cyan));
  opacity: .85;
}

.page-faq .faq-mark {
  position: relative;
  flex: 0 0 18px;
  align-self: center;
  width: 18px;
  height: 18px;
  margin-left: auto;
  color: var(--text-muted);
  transition: transform var(--ease), color var(--ease);
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
  border-radius: 1px;
  transition: opacity var(--ease);
}

.page-faq .faq-mark::before {
  width: 12px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-mark::after {
  width: 2px;
  height: 12px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] > .faq-q .faq-mark {
  transform: rotate(180deg);
  color: var(--block-accent, var(--signal-cyan));
}

.page-faq .faq-item[open] > .faq-q .faq-mark::after {
  opacity: 0;
}

.page-faq .faq-a {
  position: relative;
  margin: 0;
  padding: 0 0 20px 40px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-body);
}

.page-faq .faq-a::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 4px;
  bottom: 24px;
  width: 1px;
  background: linear-gradient(180deg, var(--block-accent, var(--signal-cyan)), rgba(30, 58, 110, 0));
}

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

/* ---------- 移动端读数 + 问答 ---------- */
.page-faq .faq-mobile-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

.page-faq .faq-readout {
  padding: 20px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  box-shadow: var(--shadow-panel);
}

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

.page-faq .faq-readout-list li {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 6px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: var(--line-soft);
}

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

.page-faq .faq-readout-list .data-num {
  font-size: 30px;
  line-height: 1;
  color: var(--signal-cyan);
}

.page-faq .faq-readout-unit {
  font-size: 13px;
  color: var(--text-muted);
}

.page-faq .faq-readout-label {
  grid-column: 1 / -1;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ---------- 三张小卡 ---------- */
.page-faq .faq-triple {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-faq .faq-mini {
  padding: 20px 20px 22px;
  border: var(--line-soft);
  border-top: 2px solid var(--block-accent, var(--signal-cyan));
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(18, 36, 74, .5), rgba(10, 23, 48, .62));
}

.page-faq .faq-mini .faq-block-num {
  font-size: 20px;
}

.page-faq .faq-mini-title {
  margin: 10px 0 10px;
  font-family: var(--font-ui);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-bright);
}

.page-faq .faq-mini p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-body);
}

.page-faq .faq-mini a,
.page-faq .faq-footnote a {
  color: var(--signal-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* ---------- 提问准备 ---------- */
.page-faq .faq-prepare {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-prepare li {
  position: relative;
  padding-left: 24px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-body);
}

.page-faq .faq-prepare li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .72em;
  width: 8px;
  height: 8px;
  border: 1.5px solid var(--signal-cyan);
  transform: rotate(45deg);
}

.page-faq .faq-prepare strong {
  font-weight: 700;
  color: var(--text-bright);
}

.page-faq .faq-contact-panel {
  padding: 20px 20px 22px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-contact-list {
  margin: 16px 0 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact-list dt {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--text-muted);
}

.page-faq .faq-contact-list dd {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-bright);
  word-break: break-all;
}

.page-faq .faq-contact-panel .btn-row {
  margin-top: 20px;
}

.page-faq .faq-contact-panel .faq-side-note {
  margin-top: 16px;
}

.page-faq .faq-footnote {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted);
}

/* ---------- 图片 ---------- */
.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: inherit;
  object-fit: cover;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-triple {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-intro {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: end;
  }

  .page-faq .faq-mobile-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 34px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-cat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 899px) {
  .page-faq .faq-split > [class*="col-"] {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat-card,
  .page-faq .faq-q,
  .page-faq .faq-mark,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after {
    transition: none;
  }
}