.page-faq {
  --faq-pad: 20px;
  --faq-clay-deep: #A8492A;
  background: var(--ink);
  color: var(--white);
  padding: 0 0 72px;
  overflow-x: clip;
}

@media (min-width: 768px) {
  .page-faq {
    --faq-pad: 32px;
  }
}

.page-faq .faq-wrap {
  width: min(100% - var(--faq-pad) * 2, var(--shell));
  margin-inline: auto;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-intro {
  position: relative;
  isolation: isolate;
  padding: 36px 0 10px;
}

.page-faq .faq-intro::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -160px;
  right: -32%;
  width: 86%;
  height: 440px;
  border-radius: 0 0 46% 54% / 40% 0 60% 60%;
  background: linear-gradient(150deg, rgba(41, 211, 162, 0.22), rgba(217, 118, 74, 0.16) 58%, rgba(14, 26, 43, 0) 86%);
  transform: rotate(-6deg);
  pointer-events: none;
}

.page-faq .faq-crumb {
  font-size: 13px;
  color: var(--slate);
}

.page-faq .faq-crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-crumb li + li::before {
  content: "/";
  margin-right: 8px;
  opacity: 0.55;
}

.page-faq .faq-crumb a {
  color: var(--snow);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

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

.page-faq .faq-crumb [aria-current="page"] {
  color: var(--slate);
}

.page-faq .faq-eyebrow {
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--clay);
}

.page-faq .faq-title {
  margin: 12px 0 0;
  max-width: 22ch;
  font-size: clamp(29px, 7.4vw, 52px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--white);
}

.page-faq .faq-lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--snow);
}

.page-faq .faq-facts {
  display: grid;
  gap: 16px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 700px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
}

.page-faq .faq-fact {
  border-left: 3px solid var(--clay);
  padding-left: 14px;
}

.page-faq .faq-fact strong {
  display: block;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-fact span {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 快捷跳转条 ---------- */

.page-faq .faq-jump-bar {
  position: sticky;
  top: var(--header-h);
  z-index: 5;
  margin-top: 32px;
  padding: 12px 0;
  background: linear-gradient(180deg, var(--ink) 0%, rgba(14, 26, 43, 0.94) 100%);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-jump {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-jump li {
  flex: 0 0 auto;
}

.page-faq .faq-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-dark);
  background: rgba(168, 203, 224, 0.06);
  color: var(--snow);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-pill em {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--clay);
}

.page-faq .faq-pill:hover,
.page-faq .faq-pill:focus-visible {
  border-color: var(--signal);
  background: rgba(41, 211, 162, 0.14);
  color: var(--white);
}

/* ---------- 分组面板 ---------- */

.page-faq .faq-group {
  margin-top: 30px;
  padding: 26px 20px 24px;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-xl);
  background: var(--panel);
  scroll-margin-top: calc(var(--header-h) + 84px);
}

.page-faq .faq-group-head {
  position: relative;
}

.page-faq .faq-group-title {
  margin: 6px 0 0;
  font-size: clamp(22px, 5.2vw, 30px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--white);
}

.page-faq .faq-group-note {
  margin: 10px 0 0;
  max-width: 40ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-group-body {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

@media (min-width: 1000px) {
  .page-faq .faq-group {
    display: grid;
    grid-template-columns: minmax(200px, 264px) minmax(0, 1fr);
    gap: 0 48px;
    padding: 36px 36px 34px;
  }

  .page-faq .faq-group-head {
    position: sticky;
    top: calc(var(--header-h) + 88px);
    align-self: start;
  }

  .page-faq .faq-group-body {
    margin-top: 0;
  }
}

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  margin: 0 0 4px;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-dark);
  background: var(--panel-lift);
}

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

.page-faq .faq-figure--narrow {
  max-width: 560px;
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-item {
  border: 1px solid var(--line-dark);
  border-radius: var(--r-md);
  background: rgba(10, 20, 32, 0.5);
  overflow: hidden;
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease), transform 160ms var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(168, 203, 224, 0.42);
}

.page-faq .faq-item[open] {
  border-color: rgba(217, 118, 74, 0.55);
  background: rgba(10, 20, 32, 0.86);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 16px 16px 17px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-idx {
  min-width: 2.2ch;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--clay);
}

.page-faq .faq-qtext {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.012em;
  color: var(--white);
}

.page-faq .faq-toggle {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-dark);
  transition: border-color 160ms var(--ease);
}

.page-faq .faq-toggle::before,
.page-faq .faq-toggle::after {
  content: "";
  position: absolute;
  border-radius: 2px;
  background: var(--snow);
  transition: transform 200ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-toggle::before {
  left: 5px;
  right: 5px;
  top: 10px;
  height: 2px;
}

.page-faq .faq-toggle::after {
  top: 5px;
  bottom: 5px;
  left: 10px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-toggle {
  border-color: var(--signal);
}

.page-faq .faq-item[open] .faq-toggle::before {
  background: var(--signal);
}

.page-faq .faq-item[open] .faq-toggle::after {
  transform: scaleY(0);
}

.page-faq .faq-a {
  margin: 0 8px 8px;
  padding: 18px 18px 16px;
  border-radius: var(--r-md);
  background: var(--mist);
  color: var(--ink);
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

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

.page-faq .faq-a a {
  color: var(--signal-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: text-decoration-thickness 120ms var(--ease);
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  text-decoration-thickness: 2px;
}

/* ---------- 结尾协助区 ---------- */

.page-faq .faq-help {
  display: grid;
  gap: 22px;
  margin-top: 30px;
  padding: 28px 20px;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-xl);
  background: linear-gradient(140deg, var(--panel-lift) 0%, var(--ink-deep) 100%);
}

@media (min-width: 880px) {
  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: center;
    gap: 44px;
    padding: 40px 40px;
  }
}

.page-faq .faq-help-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--clay);
}

.page-faq .faq-help-title {
  margin: 10px 0 0;
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.26;
  color: var(--white);
}

.page-faq .faq-help-body p {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--snow);
}

.page-faq .faq-help-body a {
  color: var(--signal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-help-actions {
  display: grid;
  gap: 10px;
  justify-items: start;
}

.page-faq .faq-copy {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  padding: 12px 20px;
  border-radius: var(--r-pill);
  border: 1px solid var(--signal);
  background: rgba(41, 211, 162, 0.12);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background-color 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-copy-text {
  overflow-wrap: anywhere;
}

.page-faq .faq-copy:hover,
.page-faq .faq-copy:focus-visible {
  background: var(--signal);
  color: var(--ink);
}

.page-faq .faq-copy[data-copied="true"] {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink);
}

.page-faq .faq-help-hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

.page-faq .faq-help-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-dark);
  color: var(--snow);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-help-link::after {
  content: "→";
  font-size: 15px;
  transition: transform 160ms var(--ease);
}

.page-faq .faq-help-link:hover,
.page-faq .faq-help-link:focus-visible {
  border-color: var(--signal);
  background: rgba(41, 211, 162, 0.12);
  color: var(--white);
}

.page-faq .faq-help-link:hover::after {
  transform: translateX(3px);
}

/* ---------- 焦点与降级 ---------- */

.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-pill,
  .page-faq .faq-item,
  .page-faq .faq-toggle,
  .page-faq .faq-toggle::before,
  .page-faq .faq-toggle::after,
  .page-faq .faq-copy,
  .page-faq .faq-help-link,
  .page-faq .faq-help-link::after,
  .page-faq .faq-crumb a {
    transition-duration: 0ms;
  }
}