.page-faq {
  --faq-rule: rgba(21, 50, 48, .16);
  --faq-rule-strong: rgba(21, 50, 48, .34);
  --faq-ink-soft: rgba(21, 50, 48, .70);
  --faq-ink-mid: rgba(21, 50, 48, .86);
  --faq-on-dark: rgba(244, 240, 230, .82);
  --faq-on-dark-soft: rgba(244, 240, 230, .64);
  background: var(--ink-900);
  overflow-x: clip;
}

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

.page-faq .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(18px, 3vw, 34px) 0 clamp(28px, 4.4vw, 54px);
  color: var(--paper);
  background:
    radial-gradient(115% 100% at 8% -20%, rgba(46, 125, 166, .22), transparent 62%),
    radial-gradient(80% 90% at 100% 0%, rgba(240, 101, 30, .10), transparent 58%),
    linear-gradient(180deg, var(--ink-950) 0%, var(--ink-900) 58%, var(--ink-800) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(244, 240, 230, .035) 0 1px, transparent 1px 46px);
  pointer-events: none;
}

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

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(16px, 2.4vw, 28px);
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-size: clamp(42px, 8vw, 104px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: 8px 0 0;
  color: var(--paper);
}

.page-faq .faq-hero__intro {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  letter-spacing: .01em;
  color: var(--faq-on-dark);
}

.page-faq .faq-hero__jump {
  border-top: 1px solid var(--line-soft);
  padding-top: 14px;
}

.page-faq .faq-hero__jump .label {
  color: var(--faq-on-dark-soft);
  margin: 0 0 8px;
}

.page-faq .faq-hero__jump ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-hero__jump a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  font-size: 14.5px;
  letter-spacing: .02em;
  color: var(--faq-on-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 148, 148, .2);
  transition: color .24s var(--ease), padding-left .24s var(--ease), border-color .24s var(--ease);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  color: var(--orange-soft);
  padding-left: 8px;
  border-bottom-color: var(--orange);
}

.page-faq .faq-hero__jump .num {
  font-size: 12px;
  color: var(--orange);
  letter-spacing: .06em;
}

.page-faq .faq-hero__figure {
  margin: clamp(24px, 3.6vw, 46px) 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-faq .faq-hero__figure .figure__cap {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--faq-on-dark-soft);
}

/* ---------- 先读三条 ---------- */
.page-faq .faq-first {
  padding: clamp(28px, 4.4vw, 56px) 0 clamp(34px, 5vw, 64px);
  color: var(--paper);
  background: var(--ink-800);
  border-top: 1px solid var(--line);
}

.page-faq .faq-first .section-head__title {
  color: var(--paper);
}

.page-faq .faq-first .section-head__note {
  color: var(--faq-on-dark-soft);
}

.page-faq .faq-first .section-head__rule {
  display: block;
  width: 56px;
  height: 2px;
  margin: 12px 0 0;
  background: var(--orange);
}

.page-faq .faq-first__list {
  list-style: none;
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 20px);
}

.page-faq .faq-first__item {
  position: relative;
  padding: clamp(16px, 2vw, 24px);
  background: linear-gradient(160deg, rgba(18, 64, 62, .96), rgba(8, 33, 31, .88));
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--r-sm) var(--r-lg) var(--r-lg) var(--r-sm);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-first__num {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-faq .faq-first__q {
  font-family: var(--font-display);
  font-size: clamp(19px, 2vw, 23px);
  font-weight: 600;
  line-height: 1.3;
  margin: 10px 0 12px;
  color: var(--paper);
}

.page-faq .faq-first__a,
.page-faq .faq-first__b {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.74;
}

.page-faq .faq-first__a {
  color: var(--faq-on-dark);
}

.page-faq .faq-first__b {
  margin-bottom: 0;
  color: var(--faq-on-dark-soft);
}

.page-faq .faq-first__tag {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-950);
  background: var(--orange-soft);
  border-radius: var(--r-xs);
  vertical-align: 1px;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: clamp(30px, 5vw, 68px) 0 clamp(34px, 5.4vw, 72px);
  color: var(--paper-text);
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-deep) 100%);
}

.page-faq .faq-body__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
}

.page-faq .faq-index {
  border-top: 2px solid var(--paper-text);
  padding-top: 14px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  color: var(--faq-ink-soft);
}

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

.page-faq .faq-index__list a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  color: var(--paper-text);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-rule);
  transition: color .22s var(--ease), padding-left .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--blue-deep);
  padding-left: 8px;
  border-bottom-color: var(--orange);
}

.page-faq .faq-index__list .num {
  font-size: 12px;
  color: var(--blue);
  letter-spacing: .06em;
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

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

.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(30px, 4vw, 54px);
}

.page-faq .faq-group__head {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-rule-strong);
  transition: border-color .24s var(--ease);
}

.page-faq .faq-group__head h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -.01em;
  margin: 0;
  color: var(--paper-text);
}

.page-faq .faq-group__note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--faq-ink-soft);
  max-width: 40em;
}

.page-faq .faq-group:target .faq-group__head {
  border-bottom-color: var(--orange);
}

.page-faq .faq-group:target .faq-group__head h2::after {
  content: "在读";
  display: inline-block;
  margin-left: 12px;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-950);
  background: var(--orange-soft);
  border-radius: var(--r-xs);
  vertical-align: 4px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-q {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-q__h {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-q__trigger {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: clamp(10px, 1.6vw, 18px);
  width: 100%;
  padding: clamp(14px, 1.8vw, 19px) 0;
  background: none;
  border: 0;
  text-align: left;
  font-family: inherit;
  font-size: clamp(16px, 1.6vw, 18px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper-text);
  cursor: pointer;
  transition: color .22s var(--ease);
}

.page-faq .faq-q__trigger::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: var(--orange);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .26s var(--ease);
}

.page-faq .faq-q[data-open] .faq-q__trigger::before {
  transform: scaleY(1);
}

.page-faq .faq-q__trigger:hover,
.page-faq .faq-q__trigger:focus-visible {
  color: var(--blue-deep);
}

.page-faq .faq-q__trigger:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

.page-faq .faq-q__idx {
  flex: 0 0 auto;
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--orange);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .disclosure__sign {
  flex: 0 0 auto;
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .disclosure__sign::before,
.page-faq .disclosure__sign::after {
  content: "";
  position: absolute;
  background: var(--faq-ink-soft);
  transition: transform .24s var(--ease), background .24s var(--ease);
}

.page-faq .disclosure__sign::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .disclosure__sign::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-faq .disclosure[data-open] .disclosure__sign::before {
  background: var(--orange);
}

.page-faq .disclosure[data-open] .disclosure__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-q__panel {
  padding: 0 0 clamp(16px, 2vw, 22px) clamp(26px, 3.4vw, 42px);
}

.page-faq .faq-q__panel p {
  margin: 0 0 12px;
  max-width: 36em;
  font-size: 15.5px;
  line-height: 1.78;
  letter-spacing: .01em;
  color: var(--faq-ink-mid);
}

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

.page-faq .faq-table-wrap {
  margin: 16px 0 4px;
  overflow-x: auto;
  border-left: 2px solid var(--blue);
  padding-left: 12px;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 380px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table caption {
  text-align: left;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--faq-ink-soft);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 9px 12px 9px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-table th {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--faq-ink-soft);
  font-weight: 600;
}

.page-faq .faq-table td:nth-child(3) {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--blue-deep);
  white-space: nowrap;
}

.page-faq .faq-figure {
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  max-width: 540px;
  border-radius: var(--r-md) var(--r-lg) var(--r-lg) var(--r-md);
  overflow: hidden;
}

.page-faq .faq-figure .figure__cap {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--faq-ink-soft);
}

/* ---------- 收束区 ---------- */
.page-faq .faq-tail {
  padding: clamp(32px, 5vw, 64px) 0;
  color: var(--paper);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(240, 101, 30, .14), transparent 60%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-950) 100%);
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.page-faq .faq-tail__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 48px);
}

.page-faq .faq-tail__title {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -.01em;
  margin: 0 0 14px;
  color: var(--paper);
}

.page-faq .faq-tail__lead p {
  margin: 0 0 12px;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-on-dark);
}

.page-faq .faq-tail__hint {
  color: var(--faq-on-dark-soft) !important;
  font-size: 14px !important;
}

.page-faq .faq-tail .btn {
  margin-top: 10px;
}

.page-faq .faq-tail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-tail__list a {
  display: block;
  padding: 16px 18px;
  text-decoration: none;
  background: rgba(8, 33, 31, .58);
  border: 1px solid var(--line);
  border-radius: var(--r-sm) var(--r-md) var(--r-md) var(--r-sm);
  transition: border-color .24s var(--ease), background .24s var(--ease), transform .24s var(--ease);
}

.page-faq .faq-tail__list a:hover,
.page-faq .faq-tail__list a:focus-visible {
  background: rgba(18, 64, 62, .78);
  border-color: var(--orange);
  transform: translateX(4px);
}

.page-faq .faq-tail__k {
  display: block;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--paper);
  margin-bottom: 6px;
}

.page-faq .faq-tail__v {
  display: block;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--faq-on-dark-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-first__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(28px, 4vw, 60px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__inner {
    grid-template-columns: minmax(0, 232px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 4.6vw, 68px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-figure {
    margin-left: auto;
    margin-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__jump a,
  .page-faq .faq-index__list a,
  .page-faq .faq-q__trigger,
  .page-faq .disclosure__sign::before,
  .page-faq .disclosure__sign::after,
  .page-faq .faq-tail__list a {
    transition: none;
  }

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