.page-faq {
  --faq-gap: clamp(16px, 2.2vw, 24px);
  --faq-pad: clamp(18px, 2.4vw, 26px);
  padding: calc(var(--header-h) + clamp(18px, 3vw, 36px)) 0 clamp(56px, 8vw, 100px);
  color: var(--chalk);
}

.page-faq .page-faq__crumbs {
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 46px);
  align-items: center;
  margin-bottom: clamp(34px, 5vw, 66px);
}

.page-faq .faq-hero__text > * {
  max-width: 60ch;
}

.page-faq .faq-hero__title {
  margin: 12px 0 16px;
  font-size: clamp(30px, 5.4vw, 56px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.012em;
  transform: skewX(-4deg);
  transform-origin: left bottom;
  color: var(--chalk);
}

.page-faq .faq-hero__lede {
  margin: 0 0 22px;
  font-size: 17px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__chips li {
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(198, 242, 78, 0.16), transparent 60%),
    linear-gradient(160deg, var(--panel) 0%, var(--ink-2) 100%);
  box-shadow: var(--shadow-soft);
}

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

.page-faq .faq-hero__media .media__cap {
  padding: 10px 18px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

@media (min-width: 920px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.6vw, 48px);
}

.page-faq .faq-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  min-width: 0;
}

@media (min-width: 1080px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 336px;
    align-items: start;
  }
}

/* ---------- 分组卡 ---------- */

.page-faq .faq-group {
  position: relative;
  min-width: 0;
  padding: var(--faq-pad);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--panel) 0%, rgba(14, 42, 34, 0.72) 100%);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  top: 20px;
  bottom: 20px;
  left: 0;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--lime) 0%, rgba(198, 242, 78, 0) 92%);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 12px;
  padding-bottom: 14px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(19px, 2.3vw, 24px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.01em;
}

.page-faq .faq-group__tag {
  margin-left: auto;
  padding: 3px 10px;
  border: 1px dashed var(--line);
  border-radius: var(--pill);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
  white-space: nowrap;
}

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

/* ---------- 问答条目 ---------- */

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

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

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 15px 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.62;
  color: var(--chalk);
  cursor: pointer;
  list-style: none;
  transition: color 0.2s ease;
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--lime-hi);
}

.page-faq .faq-item__idx {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

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

.page-faq .faq-item__icon {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 5px;
  border: 1px solid var(--line-lime);
  border-radius: var(--pill);
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--lime);
  border-radius: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__icon::before {
  width: 8px;
  height: 1.5px;
}

.page-faq .faq-item__icon::after {
  width: 1.5px;
  height: 8px;
  transition: transform 0.24s ease, opacity 0.24s ease;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(0.2);
}

.page-faq .faq-item__a {
  padding: 0 0 17px 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--mist);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-item__a a:hover {
  color: var(--lime-hi);
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faqAnswerIn 0.26s ease both;
}

@keyframes faqAnswerIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 横向展开的宽组 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-group--wide {
    grid-column: 1 / -1;
  }
}

.page-faq .faq-group--feature .faq-group__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 32px);
  align-items: start;
}

@media (min-width: 900px) {
  .page-faq .faq-group--feature .faq-group__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 290px);
  }
}

.page-faq .faq-visual {
  margin: 18px 0 4px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--ink-2);
}

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

.page-faq .faq-visual .media__cap {
  padding: 9px 14px 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-faq .faq-visual {
    margin-top: 12px;
  }

  .page-faq .faq-group--split .faq-group__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(18px, 2.6vw, 34px);
  }
}

/* ---------- 侧栏 ---------- */

.page-faq .faq-side {
  display: grid;
  align-content: start;
  gap: 16px;
  min-width: 0;
}

.page-faq .faq-index {
  padding: 18px 18px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: var(--ink-2);
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.page-faq .faq-index__link:hover {
  color: var(--chalk);
  background: rgba(198, 242, 78, 0.09);
}

.page-faq .faq-index__link[aria-current] {
  color: var(--lime);
  background: rgba(198, 242, 78, 0.12);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-faq .faq-help {
  padding: 22px 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, var(--lime) 0%, var(--lime-hi) 100%);
  color: var(--ink);
  box-shadow: 0 22px 44px -30px rgba(198, 242, 78, 0.7);
}

.page-faq .faq-help__title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.35;
}

.page-faq .faq-help__text {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(7, 19, 15, 0.78);
}

.page-faq .faq-help__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--pill);
  background: var(--ink);
  color: var(--lime);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease;
}

.page-faq .faq-help__btn:hover {
  background: var(--ink-2);
  transform: translateY(-1px);
}

.page-faq .faq-contact {
  padding: 18px 20px;
  border: 1px dashed var(--line);
  border-radius: var(--radius-lg);
  background: rgba(14, 42, 34, 0.62);
}

.page-faq .faq-contact__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-contact__list {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-faq .faq-contact__row dt {
  font-size: 12.5px;
  color: var(--mist);
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--chalk);
  word-break: break-all;
}

@media (min-width: 1080px) {
  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}