.page-faq {
  --faq-line-soft: rgba(28, 26, 23, .16);
  background: var(--ink);
  color: var(--text);
  overflow-x: hidden;
}

.page-faq .faq-wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.page-faq .faq-topbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-block: 14px;
}

.page-faq .faq-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .faq-crumb a {
  color: var(--cyan-lift);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .12s var(--ease);
}

.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-topbar__hint {
  margin: 0;
  font-size: 12.5px;
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: 40px 0;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-size: clamp(30px, 6.4vw, 52px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--text);
  max-width: 20em;
}

.page-faq .faq-hero__lead {
  margin: 0 0 26px;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 15px;
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(11, 31, 46, .72);
  transition: border-color .12s var(--ease), color .12s var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan-lift);
  outline: none;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

.page-faq .faq-hero__figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

/* ---------- 状态条 ---------- */
.page-faq .faq-strip {
  margin-top: 40px;
  border-block: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(34, 224, 214, .07), rgba(6, 19, 32, 0) 62%);
}

.page-faq .faq-strip__inner {
  display: grid;
  gap: 12px;
  padding-block: 16px;
}

.page-faq .faq-strip__item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--text);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 40px;
  margin-top: 52px;
}

.page-faq .faq-aside {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-faq .faq-aside__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-index {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 0;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .12s var(--ease), border-color .12s var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--cyan-lift);
  border-bottom-color: var(--cyan);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  min-width: 22px;
}

.page-faq .faq-aside__tip {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--amber);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-aside__tip a {
  color: var(--amber-lift);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 178, 51, .5);
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: 46px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 24px);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 3.4vw, 26px);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.3;
  color: var(--text);
}

.page-faq .faq-note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mist);
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  transition: color .12s var(--ease);
}

.page-faq .qa__q::-webkit-details-marker {
  display: none;
}

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

.page-faq .qa__icon {
  position: relative;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color .16s var(--ease), transform .16s var(--ease);
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
}

.page-faq .qa__icon::before {
  width: 8px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.page-faq .qa__icon::after {
  width: 1.5px;
  height: 8px;
  transform: translate(-50%, -50%);
  transition: transform .16s var(--ease), opacity .16s var(--ease);
}

.page-faq .qa[open] .qa__q {
  color: var(--cyan-lift);
}

.page-faq .qa[open] .qa__icon {
  border-color: var(--cyan);
  transform: rotate(180deg);
}

.page-faq .qa[open] .qa__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.page-faq .qa__a {
  padding-bottom: 20px;
  max-width: 64ch;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.85;
  color: #C6D6DE;
}

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

.page-faq .qa__a a {
  color: var(--cyan-lift);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 214, .45);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  border-bottom-color: var(--cyan-lift);
}

.page-faq .num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--amber-lift);
  border-bottom: 1px solid var(--amber);
  padding-bottom: 1px;
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 5;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 纸面联系带 ---------- */
.page-faq .faq-help {
  margin-top: 64px;
  padding-block: 52px;
  background: var(--paper);
  color: var(--paper-ink);
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 36px;
}

.page-faq .faq-help__tag {
  display: inline-block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: #7A6F62;
  border: 1px solid rgba(28, 26, 23, .22);
  padding: 4px 10px;
}

.page-faq .faq-help__title {
  margin: 0 0 14px;
  font-size: clamp(24px, 4.4vw, 34px);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.25;
  color: var(--paper-ink);
}

.page-faq .faq-help__lead {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.8;
  color: #3E3831;
}

.page-faq .faq-help__lead a {
  color: #8A3A22;
  text-decoration: none;
  border-bottom: 1px solid rgba(180, 67, 43, .45);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.page-faq .faq-help__item {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  padding: 14px 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-help__item:last-child {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-help__key {
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: #7A6F62;
}

.page-faq .faq-help__val {
  flex: 1 1 14em;
  font-size: 14px;
  line-height: 1.7;
  color: #3E3831;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-help__btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  color: var(--ink);
  background: var(--amber);
  border: 1px solid var(--amber);
  border-radius: 2px;
  transition: background .12s var(--ease), color .12s var(--ease);
}

.page-faq .faq-help__btn:hover,
.page-faq .faq-help__btn:focus-visible {
  background: var(--amber-lift);
  border-color: var(--amber-lift);
  outline: none;
}

.page-faq .faq-help__btn--ghost {
  background: transparent;
  color: var(--paper-ink);
  border-color: rgba(28, 26, 23, .38);
}

.page-faq .faq-help__btn--ghost:hover,
.page-faq .faq-help__btn--ghost:focus-visible {
  background: rgba(28, 26, 23, .06);
  border-color: rgba(28, 26, 23, .6);
}

.page-faq .faq-help .qa {
  border-bottom-color: var(--faq-line-soft);
}

.page-faq .faq-help .qa:first-child {
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-help .qa__q {
  color: var(--paper-ink);
  font-size: 15px;
}

.page-faq .faq-help .qa__q:hover,
.page-faq .faq-help .qa__q:focus-visible,
.page-faq .faq-help .qa[open] .qa__q {
  color: #8A3A22;
}

.page-faq .faq-help .qa__icon {
  border-color: rgba(28, 26, 23, .3);
}

.page-faq .faq-help .qa__icon::before,
.page-faq .faq-help .qa__icon::after {
  background: #8A3A22;
}

.page-faq .faq-help .qa[open] .qa__icon {
  border-color: #8A3A22;
}

.page-faq .faq-help .qa__a p {
  color: #3E3831;
  font-size: 14px;
}

.page-faq .faq-help .qa__a a {
  color: #8A3A22;
  border-bottom-color: rgba(180, 67, 43, .45);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-hero {
    padding-block: 52px 0;
  }

  .page-faq .faq-strip__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 24px;
  }

  .page-faq .faq-help__list {
    display: grid;
    gap: 0;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 48px;
    align-items: end;
  }

  .page-faq .faq-strip__inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    padding-block: 18px;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(190px, 250px) minmax(0, 1fr);
    gap: 64px;
    margin-top: 64px;
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-help {
    padding-block: 72px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 56px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__icon,
  .page-faq .qa__icon::after,
  .page-faq .faq-chip,
  .page-faq .faq-help__btn {
    transition: none;
  }
}