.page-faq {
  --faq-gap: clamp(20px, 3vw, 40px);
  --faq-card-bg: #0C2419;
  --faq-card-open: #10302333;
  color: var(--white);
  background: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(24px, 4.5vw, 52px) 0 clamp(30px, 5vw, 60px);
  background:
    radial-gradient(110% 90% at 96% -10%, rgba(214, 255, 63, .13), transparent 62%),
    linear-gradient(180deg, var(--panel) 0%, var(--ink) 78%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero__lead .breadcrumb {
  margin-bottom: 18px;
}

.page-faq .faq-hero__lead .eyebrow {
  display: block;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-faq .faq-hero__lead h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 56px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-hero__lead .lede {
  margin: 0 0 24px;
  max-width: 34em;
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.8;
  color: rgba(243, 247, 242, .82);
}

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

.page-faq .faq-hero__check {
  position: relative;
  padding: clamp(18px, 3vw, 26px);
  background: linear-gradient(160deg, rgba(30, 90, 60, .55), rgba(12, 36, 25, .92));
  clip-path: var(--cut);
  border-left: 3px solid var(--lime);
}

.page-faq .faq-check__label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--lime);
}

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

.page-faq .faq-check__item {
  display: grid;
  grid-template-columns: 42px 1fr;
  grid-template-areas:
    "n t"
    "n d";
  column-gap: 12px;
  row-gap: 2px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

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

.page-faq .faq-check__n {
  grid-area: n;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--lime);
  line-height: 1.2;
}

.page-faq .faq-check__t {
  grid-area: t;
  font-weight: 700;
  font-size: 16px;
  color: var(--white);
}

.page-faq .faq-check__d {
  grid-area: d;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(243, 247, 242, .66);
}

.page-faq .faq-check__note {
  margin: 18px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 热门速查 ---------- */
.page-faq .faq-hot {
  padding: clamp(34px, 5vw, 64px) 0;
  background: var(--ink);
}

.page-faq .faq-hot__head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 900;
  line-height: 1.25;
  color: var(--white);
}

.page-faq .chapter {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.page-faq .chapter__num {
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(214, 255, 63, .72);
}

.page-faq .faq-hot__intro,
.page-faq .faq-group__intro {
  margin: 0;
  max-width: 46em;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(243, 247, 242, .7);
}

.page-faq .faq-hot__grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-hot__media {
  margin: 0;
  min-height: 180px;
}

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

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

.page-faq .hot-card {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num title"
    "num hint";
  column-gap: 14px;
  row-gap: 4px;
  align-items: center;
  padding: 14px 16px;
  text-decoration: none;
  background: var(--faq-card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid transparent;
  clip-path: var(--cut-sm);
  transition: border-color .18s var(--ease), transform .18s var(--ease), background .18s var(--ease);
}

.page-faq .hot-card:hover,
.page-faq .hot-card:focus-visible {
  background: #103023;
  border-left-color: var(--lime);
  transform: translateY(-2px);
}

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

.page-faq .hot-card__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--lime);
}

.page-faq .hot-card__title {
  grid-area: title;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-faq .hot-card__hint {
  grid-area: hint;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--stone);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-main {
  padding: 0 0 clamp(40px, 6vw, 80px);
  background:
    linear-gradient(180deg, var(--ink), #06120D 60%, var(--ink));
}

.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-side__box {
  padding: 18px;
  background: rgba(12, 36, 25, .78);
  border: 1px solid var(--line);
  clip-path: var(--cut);
}

.page-faq .faq-side__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-faq .faq-side__nav {
  display: grid;
  gap: 2px;
  margin-bottom: 20px;
}

.page-faq .faq-side__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 14px;
  font-weight: 600;
  color: rgba(243, 247, 242, .82);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease), background .16s var(--ease);
}

.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  color: var(--lime);
  border-left-color: var(--lime);
  background: rgba(214, 255, 63, .06);
}

.page-faq .faq-side__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 1px;
}

.page-faq .faq-side__idx {
  font-size: 11px;
  color: var(--lime);
}

.page-faq .faq-side__hot {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .faq-side__hot a {
  display: flex;
  gap: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(243, 247, 242, .66);
  text-decoration: none;
}

.page-faq .faq-side__hot a:hover,
.page-faq .faq-side__hot a:focus-visible {
  color: var(--white);
}

.page-faq .faq-side__hot .num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--lime);
  flex: none;
}

.page-faq .faq-side__cta {
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-side__cta p {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--stone);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(34px, 5vw, 56px);
  min-width: 0;
}

.page-faq .faq-group {
  padding-top: 4px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-group .chapter {
  margin-bottom: 10px;
}

.page-faq .faq-group__intro {
  margin-bottom: 20px;
}

.page-faq .faq-group__split {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-group__qas {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-faq .faq-group__media {
  margin: 0;
  min-height: 200px;
}

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

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  background: var(--faq-card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid transparent;
  clip-path: var(--cut-sm);
  transition: border-color .18s var(--ease), background .18s var(--ease);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .qa + .qa {
  margin-top: 10px;
}

.page-faq .faq-group__qas .qa + .qa {
  margin-top: 10px;
}

.page-faq .qa:hover {
  border-color: var(--line-lime);
}

.page-faq .qa[open] {
  background: #0F2A1D;
  border-left-color: var(--lime);
  border-color: var(--line-lime);
}

.page-faq .qa__head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: .04em;
}

.page-faq .qa__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-faq .qa[open] .qa__title {
  color: var(--lime);
}

.page-faq .qa__sign {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--lime);
  transition: transform .18s var(--ease), opacity .18s var(--ease);
}

.page-faq .qa__sign::before {
  width: 14px;
  height: 2px;
}

.page-faq .qa__sign::after {
  width: 2px;
  height: 14px;
}

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

.page-faq .qa__body {
  padding: 0 16px 18px 16px;
  border-top: 1px dashed var(--line);
  margin-top: 0;
  padding-top: 14px;
}

.page-faq .qa__body p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(243, 247, 242, .78);
}

.page-faq .qa__body p:last-of-type {
  margin-bottom: 0;
}

.page-faq .qa__link {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--line-lime);
  padding-bottom: 2px;
}

.page-faq .qa__link:hover,
.page-faq .qa__link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

.page-faq .qa__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* ---------- 新旧版对照 ---------- */
.page-faq .version-pair {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.page-faq .version-card {
  padding: 18px;
  background: rgba(12, 36, 25, .62);
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
}

.page-faq .version-card--new {
  background: linear-gradient(155deg, rgba(30, 90, 60, .55), rgba(12, 36, 25, .9));
  border-color: var(--line-lime);
}

.page-faq .version-card__tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clay);
}

.page-faq .version-card--new .version-card__tag {
  color: var(--lime);
}

.page-faq .version-card__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  line-height: 1.35;
  color: var(--white);
}

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

.page-faq .version-card__list li {
  position: relative;
  padding-left: 15px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(243, 247, 242, .72);
}

.page-faq .version-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 2px;
  background: var(--lime);
}

/* ---------- 订阅 ---------- */
.page-faq .sub-grid {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .sub-card {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(12, 36, 25, .7);
  border-left: 3px solid var(--amber);
  clip-path: var(--cut-sm);
}

.page-faq .sub-card__name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .sub-card__desc {
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(243, 247, 242, .66);
}

.page-faq .sub-note {
  margin: 0 0 18px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 帮助 ---------- */
.page-faq .faq-help {
  padding: clamp(20px, 3.4vw, 32px);
  background: linear-gradient(160deg, rgba(30, 90, 60, .38), rgba(12, 36, 25, .92));
  border: 1px solid var(--line-lime);
  clip-path: var(--cut);
}

.page-faq .help-grid {
  display: grid;
  gap: 12px;
  margin: 20px 0;
}

.page-faq .help-card {
  padding: 14px 16px;
  background: rgba(7, 20, 15, .6);
  border-left: 2px solid var(--lime);
}

.page-faq .help-card__key {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-faq .help-card__value {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

.page-faq .help-card__value a {
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid var(--line-lime);
}

.page-faq .help-card__value a:hover,
.page-faq .help-card__value a:focus-visible {
  color: var(--lime);
}

.page-faq .help-card__hint {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(243, 247, 242, .6);
}

.page-faq .help-cta {
  display: grid;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px dashed var(--line-lime);
}

.page-faq .help-cta p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(243, 247, 242, .74);
}

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

/* ---------- 中等宽度 ---------- */
@media (min-width: 720px) {
  .page-faq .hot-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hot__grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    align-items: stretch;
  }

  .page-faq .version-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .sub-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .help-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面双栏 ---------- */
@media (min-width: 980px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    align-items: end;
  }

  .page-faq .faq-hot__head {
    grid-template-columns: auto 1fr;
    align-items: baseline;
    column-gap: 24px;
  }

  .page-faq .faq-hot__intro {
    justify-self: end;
    text-align: right;
  }

  .page-faq .faq-layout {
    grid-template-columns: 32% minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-side__box {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    align-items: start;
  }

  .page-faq .help-cta {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .hot-card,
  .page-faq .qa__sign::after {
    transition: none;
  }

  .page-faq .hot-card:hover {
    transform: none;
  }
}