.page-faq {
  background: var(--ink-800);
  color: var(--text);
  font-family: var(--ff-sans);
  padding-bottom: 72px;
}

.page-faq .shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

@media (min-width: 900px) {
  .page-faq .shell {
    padding-left: 32px;
    padding-right: 32px;
  }
}

/* 首屏 */
.page-faq .faq-hero {
  padding: 26px 0 44px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 92% at 90% 0%, rgba(23, 176, 138, 0.16), transparent 62%),
    linear-gradient(180deg, var(--ink-900), var(--ink-800));
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 22px;
  font-family: var(--ff-mono);
  font-size: 12px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: end;
  }
}

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

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: 30px;
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.4px;
  color: var(--cream);
  max-width: 20ch;
}

@media (min-width: 768px) {
  .page-faq .faq-hero h1 {
    font-size: 38px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero h1 {
    font-size: 46px;
  }
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
  max-width: 36em;
}

/* 关键数字速查 */
.page-faq .faq-facts {
  border: 1px solid var(--line);
  background: var(--ink-900);
}

.page-faq .faq-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-facts__k {
  font-size: 13px;
  color: var(--text-dim);
}

.page-faq .faq-facts__v {
  font-family: var(--ff-mono);
  font-size: 21px;
  line-height: 1;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-facts__v small {
  margin-left: 4px;
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.04em;
}

/* 两栏布局 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-top: 40px;
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 56px;
    align-items: start;
    padding-top: 56px;
  }
}

/* 左侧分组目录 */
.page-faq .faq-toc {
  min-width: 0;
}

@media (min-width: 900px) {
  .page-faq .faq-toc {
    position: sticky;
    top: 76px;
  }
}

.page-faq .faq-toc__label {
  margin: 0 0 12px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 13px 10px 13px 14px;
  border-bottom: 1px solid var(--line);
  border-left: 3px solid transparent;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--cream);
  border-left-color: var(--teal);
  background: rgba(23, 176, 138, 0.07);
}

.page-faq .faq-toc__idx {
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--clay);
}

.page-faq .faq-toc__num {
  margin-left: auto;
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--steel);
}

/* 右侧问答主体 */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 88px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 52px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--line);
  transition: border-color 0.2s ease;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 20px;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--cream);
}

@media (min-width: 768px) {
  .page-faq .faq-group__title {
    font-size: 24px;
  }
}

.page-faq .faq-group__count {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--teal);
  border: 1px solid var(--line);
  padding: 3px 8px;
}

.page-faq .faq-group__intro {
  margin: 16px 0 4px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 40em;
}

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

.page-faq .faq-group:target .faq-group__title {
  color: var(--clay);
}

/* 单条问答 */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 88px;
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 0;
  padding: 18px 2px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
  color: var(--text);
  transition: color 0.16s ease;
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  padding-left: 10px;
  font-family: var(--ff-mono);
  font-size: 18px;
  line-height: 1.3;
  color: var(--teal);
}

.page-faq .qa[open] .qa__q::after {
  content: "−";
  color: var(--clay);
}

.page-faq .qa__q:hover,
.page-faq .qa[open] .qa__q {
  color: var(--cream);
}

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

.page-faq .qa__n {
  flex: none;
  min-width: 2.2em;
  padding-top: 3px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

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

.page-faq .qa__a {
  margin: 0 0 18px;
  padding: 16px 18px 20px;
  background: var(--cream);
  color: var(--paper-ink);
  border-left: 3px solid var(--teal);
  font-size: 15px;
  line-height: 1.85;
}

@media (min-width: 768px) {
  .page-faq .qa__a {
    padding: 20px 24px 24px;
  }
}

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

.page-faq .qa__a p + p {
  margin-top: 12px;
}

.page-faq .qa__a a {
  color: var(--teal-ink);
  text-decoration: none;
  border-bottom: 1px solid rgba(14, 122, 97, 0.4);
}

.page-faq .qa__a a:hover {
  border-bottom-color: var(--teal-ink);
}

.page-faq .qa__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  border-top: 1px solid rgba(27, 36, 54, 0.16);
}

.page-faq .qa__list li {
  position: relative;
  padding: 9px 0 9px 18px;
  border-bottom: 1px solid rgba(27, 36, 54, 0.1);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .qa__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 17px;
  width: 6px;
  height: 6px;
  background: var(--clay);
}

/* 答案内配图 */
.page-faq .faq-figure {
  margin: 16px 0 0;
  border: 1px solid rgba(27, 36, 54, 0.18);
  background: #ffffff;
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid rgba(27, 36, 54, 0.14);
  font-family: var(--ff-mono);
  font-size: 12px;
  line-height: 1.6;
  color: #4a5468;
}

/* 兜底入口 */
.page-faq .faq-help {
  margin-top: 56px;
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--clay);
  background: var(--ink-900);
  scroll-margin-top: 88px;
}

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

.page-faq .faq-help__title {
  margin: 0;
  font-size: 22px;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--cream);
}

.page-faq .faq-help__lead {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 38em;
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 22px;
}

@media (min-width: 640px) {
  .page-faq .faq-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 24px;
  }
}

.page-faq .faq-help__item {
  display: flex;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .faq-help__mk {
  flex: none;
  padding-top: 2px;
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--teal);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 26px;
}

.page-faq .faq-help .btn--primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--clay);
  border-radius: var(--radius);
  background: var(--clay);
  color: #fff6ef;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-help .btn--primary:hover {
  background: var(--alert);
  border-color: var(--alert);
}

.page-faq .faq-help__note {
  font-family: var(--ff-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--steel);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q,
  .page-faq .faq-toc__link,
  .page-faq .faq-group__head,
  .page-faq .faq-help .btn--primary {
    transition: none;
  }
}