.page-faq {
  --faq-gap: clamp(12px, 2.4vw, 20px);
  --faq-block-space: clamp(26px, 4.6vw, 52px);
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: clamp(40px, 7vw, 88px);
}

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

.page-faq :focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(14px, 2.4vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(16px, 2.6vw, 28px) 0;
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.6vw, 40px);
  align-items: start;
  border-top: 2px solid var(--brand);
  padding-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  margin: 10px 0 14px;
  color: var(--c-charcoal);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 60ch;
}

.page-faq .faq-jumps {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
}

.page-faq .faq-jumps a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--c-green-deep);
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--hairline);
  padding: 8px 12px;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-jumps a:hover,
.page-faq .faq-jumps a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.page-faq .faq-hero-figure {
  margin: 0;
  border: 1px solid var(--hairline);
  background: var(--c-night);
  overflow: hidden;
}

.page-faq .faq-hero-figure img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-hero-figure figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-mint);
  padding: 10px 12px;
  border-top: 1px solid rgba(143, 214, 196, 0.28);
}

/* ---------- 四步步骤带 ---------- */
.page-faq .faq-stepband {
  background: var(--c-night);
  color: var(--c-fog);
  margin-top: clamp(28px, 5vw, 56px);
  padding-block: clamp(28px, 4.6vw, 54px);
}

.page-faq .eyebrow--light {
  color: var(--c-sand);
}

.page-faq .faq-stepband h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.2;
  letter-spacing: 0.03em;
  color: var(--c-fog);
  margin: 10px 0 12px;
}

.page-faq .faq-stepband-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: #C6D6CD;
}

.page-faq .faq-steps {
  list-style: none;
  margin: clamp(20px, 3.4vw, 32px) 0 0;
  padding: 0 0 8px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(206px, 76%);
  gap: 10px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-step {
  scroll-snap-align: start;
  background: rgba(245, 247, 242, 0.055);
  border-top: 2px solid var(--accent);
  padding: 16px 14px 18px;
}

.page-faq .faq-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--c-orange);
  letter-spacing: 0.02em;
}

.page-faq .faq-step h3 {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.04em;
  color: var(--c-fog);
  margin: 10px 0 6px;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: #C6D6CD;
}

/* ---------- 通用分栏区块 ---------- */
.page-faq .faq-block {
  border-top: 1px solid var(--hairline);
  padding-block: var(--faq-block-space);
}

.page-faq .faq-block-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 3vw, 34px);
}

.page-faq .faq-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--brand);
}

.page-faq .faq-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-blue);
  margin: 8px 0 6px;
}

.page-faq .faq-block-head h2 {
  font-family: var(--font-display);
  font-size: clamp(21px, 2.8vw, 28px);
  line-height: 1.28;
  letter-spacing: 0.02em;
  color: var(--c-charcoal);
  margin: 0;
}

.page-faq .faq-block-head::after {
  content: "";
  display: block;
  height: 1px;
  background: var(--hairline);
  margin-top: 16px;
}

.page-faq .faq-block-body > p,
.page-faq .faq-lead {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0 0 16px;
}

.page-faq .faq-lead {
  color: var(--c-charcoal);
}

/* ---------- 日期轴示意 ---------- */
.page-faq .faq-rail {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 4px 0 20px;
}

.page-faq .faq-rail-tick {
  flex: 1;
  height: 3px;
  background: var(--hairline);
  position: relative;
}

.page-faq .faq-rail-tick::after {
  content: "";
  position: absolute;
  left: 0;
  top: -5px;
  width: 1px;
  height: 13px;
  background: var(--hairline);
}

.page-faq .faq-rail-tick.is-now {
  background: var(--accent);
}

.page-faq .faq-rail-tick.is-now::after {
  background: var(--accent);
}

.page-faq .faq-two {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-bottom: 16px;
}

.page-faq .faq-note {
  border-left: 3px solid var(--c-mint);
  background: var(--surface);
  padding: 14px 16px;
}

.page-faq .faq-note h3 {
  font-family: var(--font-display);
  font-size: 15.5px;
  letter-spacing: 0.05em;
  color: var(--c-green-deep);
  margin: 0 0 8px;
}

.page-faq .faq-note p {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.76;
  color: var(--text-muted);
}

.page-faq .faq-figure {
  margin: 4px 0 0;
  border: 1px solid var(--hairline);
  background: var(--surface);
}

.page-faq .faq-figure img {
  width: 100%;
  aspect-ratio: 9 / 7;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding: 9px 12px;
  border-top: 1px solid var(--hairline);
}

/* ---------- 数据版本 ---------- */
.page-faq .faq-versions {
  margin-bottom: 18px;
}

.page-faq .faq-version {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--c-blue);
  padding: 16px 16px 18px;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-version--detail {
  border-top-color: var(--accent);
}

.page-faq .faq-version:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.page-faq .faq-version-top {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-faq .faq-version-num {
  font-family: var(--font-mono);
  font-size: 38px;
  line-height: 1;
  color: var(--c-green);
  letter-spacing: -0.02em;
}

.page-faq .faq-version--detail .faq-version-num {
  color: var(--accent);
}

.page-faq .faq-version-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.page-faq .faq-version h3 {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--c-charcoal);
  margin: 10px 0 8px;
}

.page-faq .faq-version > p {
  margin: 0 0 12px;
  font-size: 14.8px;
  line-height: 1.76;
  color: var(--text-muted);
}

.page-faq .faq-version-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-version-list li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-charcoal);
  padding: 8px 0 8px 16px;
  border-bottom: 1px solid var(--hairline);
  position: relative;
}

.page-faq .faq-version-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 7px;
  height: 1px;
  background: var(--accent);
}

/* ---------- 订阅面板 ---------- */
.page-faq .faq-subpanel {
  background: var(--c-green-deep);
  color: var(--c-fog);
  padding: clamp(18px, 3vw, 30px);
}

.page-faq .faq-subpanel-lead {
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.78;
  color: #DAE7DF;
  max-width: 62ch;
}

.page-faq .faq-channels {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(245, 247, 242, 0.18);
}

.page-faq .faq-channels li {
  background: var(--c-green-deep);
  padding: 12px 14px;
  display: grid;
  gap: 4px;
}

.page-faq .faq-channel-key {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--c-sand);
}

.page-faq .faq-channel-desc {
  font-size: 14.5px;
  line-height: 1.66;
  color: #D5E3DB;
}

.page-faq .faq-subpanel-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--c-mint);
}

/* ---------- 常见问题 ---------- */
.page-faq .faq-faq-head {
  max-width: 62ch;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .faq-faq-head h2 {
  font-family: var(--font-display);
  font-size: clamp(23px, 3.2vw, 32px);
  line-height: 1.26;
  letter-spacing: 0.02em;
  color: var(--c-charcoal);
  margin: 8px 0 12px;
}

.page-faq .faq-faq-head .faq-lead {
  margin: 0;
}

.page-faq .faq-groups {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 20px);
  align-items: start;
}

.page-faq .faq-group {
  background: var(--surface);
  border: 1px solid var(--hairline);
}

.page-faq .faq-group-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 15.5px;
  letter-spacing: 0.06em;
  color: var(--c-green-deep);
  margin: 0;
  padding: 12px 15px;
  background: rgba(14, 122, 79, 0.07);
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-group-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--surface);
  background: var(--brand);
  padding: 2px 7px;
}

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

.page-faq .faq-q:last-child {
  border-bottom: 0;
}

.page-faq .faq-q > summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 13px 40px 13px 15px;
  font-family: var(--font-display);
  font-size: 15px;
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: var(--c-charcoal);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

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

.page-faq .faq-q > summary::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--brand);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-q > summary:hover {
  background: rgba(242, 107, 42, 0.06);
  color: var(--c-green-deep);
}

.page-faq .faq-q[open] > summary {
  color: var(--c-green-deep);
}

.page-faq .faq-q[open] > summary::after {
  content: "–";
  color: var(--accent);
}

.page-faq .faq-a {
  padding: 0 15px 15px;
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-muted);
}

/* ---------- 收尾 CTA ---------- */
.page-faq .faq-cta {
  border-top: 2px solid var(--brand);
  background: linear-gradient(180deg, rgba(143, 214, 196, 0.22), rgba(245, 247, 242, 0) 62%);
  padding-block: clamp(28px, 4.6vw, 52px);
}

.page-faq .faq-cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 3vw, 32px);
  align-items: center;
}

.page-faq .faq-cta-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.28;
  letter-spacing: 0.02em;
  color: var(--c-charcoal);
  margin: 8px 0 10px;
}

.page-faq .faq-cta-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--text-muted);
  max-width: 58ch;
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-two,
  .page-faq .faq-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  }

  .page-faq .faq-block-inner {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-block-head {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-steps {
    grid-auto-flow: row;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-auto-columns: auto;
    overflow: visible;
    gap: 12px;
  }

  .page-faq .faq-cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-faq .faq-cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(16px, 2.6vw, 26px);
  }

  .page-faq .faq-channels {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-block-inner {
    grid-template-columns: 268px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jumps a,
  .page-faq .faq-version,
  .page-faq .faq-q > summary {
    transition: none;
  }

  .page-faq .faq-jumps a:hover,
  .page-faq .faq-version:hover {
    transform: none;
  }
}