.page-faq {
  --faq-line-soft: rgba(44, 76, 66, .22);
  --faq-line-dark: rgba(143, 169, 184, .26);
  --faq-top-offset: 96px;
}

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

.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--sf-focus);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(18px, 3vw, 30px) clamp(34px, 6vw, 72px);
  background-image: linear-gradient(118deg, rgba(27, 83, 68, .62) 0%, rgba(7, 28, 23, 0) 58%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 18px;
  font-family: var(--sf-font-head);
  font-size: clamp(32px, 8vw, 62px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--sf-on-dark);
  text-wrap: balance;
}

.page-faq .faq-hero__intro {
  margin: 0;
  max-width: 34em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--sf-on-dark-muted);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--faq-line-dark);
}

/* ---------- 关键词直达 ---------- */
.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: clamp(28px, 4vw, 46px);
  padding-top: 20px;
  border-top: 1px solid var(--faq-line-dark);
}

.page-faq .faq-quick__label {
  margin: 0 8px 0 0;
  font-family: var(--sf-font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sf-steel);
}

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

.page-faq .faq-chip {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid var(--faq-line-dark);
  border-radius: 999px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--sf-on-dark);
  text-decoration: none;
  transition: background-color .2s var(--sf-ease), color .2s var(--sf-ease), border-color .2s var(--sf-ease), transform .2s var(--sf-ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  background: var(--sf-orange);
  border-color: var(--sf-orange);
  color: var(--sf-ink-green);
  transform: translateY(-2px);
}

/* ---------- 主体：左目录 + 右问答 ---------- */
.page-faq .faq-body {
  padding-block: clamp(30px, 5vw, 68px);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-faq .faq-toc__title {
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-line-soft);
  font-family: var(--sf-font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--sf-muted);
}

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

.page-faq .faq-toc__link {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  font-size: 15px;
  line-height: 1.5;
  color: var(--sf-text);
  text-decoration: none;
  transition: border-color .2s var(--sf-ease), background-color .2s var(--sf-ease), color .2s var(--sf-ease);
}

.page-faq .faq-toc__link:hover {
  border-left-color: var(--sf-steel);
  background: var(--sf-bone);
}

.page-faq .faq-toc__link[data-active="true"],
.page-faq .faq-toc__link[aria-current="true"] {
  border-left-color: var(--sf-orange);
  background: rgba(255, 107, 44, .1);
  color: var(--sf-pine);
  font-weight: 700;
}

.page-faq .faq-toc__num {
  flex: none;
  font-family: var(--sf-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--sf-orange);
}

.page-faq .faq-toc__note {
  margin: 22px 0 0;
  padding: 13px 15px;
  border-left: 3px solid var(--sf-lime);
  background: var(--sf-bone);
  font-size: 13px;
  line-height: 1.65;
  color: var(--sf-muted);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-questions {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
}

.page-faq .faq-topic {
  padding-top: clamp(18px, 3vw, 28px);
  border-top: 1px solid var(--faq-line-soft);
  scroll-margin-top: var(--faq-top-offset);
}

.page-faq .faq-topic__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 2px 14px;
  margin-bottom: 16px;
}

.page-faq .faq-topic__num {
  font-family: var(--sf-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--sf-orange);
}

.page-faq .faq-topic__title {
  margin: 0;
  font-family: var(--sf-font-head);
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--sf-text);
}

.page-faq .faq-topic__desc {
  grid-column: 1 / -1;
  margin: 6px 0 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--sf-muted);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 16px 34px 16px 0;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--sf-text);
  cursor: pointer;
  list-style: none;
  transition: color .18s var(--sf-ease);
}

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

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 15px;
  font-family: var(--sf-font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--sf-orange);
  transition: transform .2s var(--sf-ease);
}

.page-faq .faq-item[open] > .faq-item__q {
  color: var(--sf-pine);
}

.page-faq .faq-item[open] > .faq-item__q::after {
  content: "–";
  transform: rotate(180deg);
}

.page-faq .faq-item__q:hover {
  color: var(--sf-orange);
}

.page-faq .faq-item__idx {
  flex: none;
  font-family: var(--sf-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--sf-steel);
}

.page-faq .faq-item__a {
  padding: 0 32px 20px 0;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--sf-muted);
}

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

.page-faq .faq-field {
  display: inline-block;
  margin: 0 4px 2px 0;
  padding: 1px 7px;
  border-radius: var(--sf-radius);
  background: rgba(198, 255, 74, .42);
  font-family: var(--sf-font-mono);
  font-size: .88em;
  color: var(--sf-text);
  transition: background-color .2s var(--sf-ease), color .2s var(--sf-ease);
}

.page-faq .faq-field:hover {
  background: var(--sf-orange);
  color: var(--sf-paper);
}

.page-faq .faq-tag {
  display: inline-block;
  margin-right: 4px;
  padding: 2px 8px;
  border-radius: var(--sf-radius);
  background: var(--sf-lime);
  font-family: var(--sf-font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--sf-ink-green);
}

.page-faq .faq-tag--orange {
  background: var(--sf-orange);
  color: var(--sf-paper);
}

.page-faq .faq-topic__figure {
  margin: clamp(20px, 3vw, 30px) 0 0;
  border: 1px solid var(--faq-line-soft);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  padding-block: clamp(38px, 6vw, 76px);
  scroll-margin-top: var(--faq-top-offset);
}

.page-faq .faq-support__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-faq .faq-support__title {
  margin: 14px 0 16px;
  font-family: var(--sf-font-head);
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--sf-on-dark);
}

.page-faq .faq-support__text {
  margin: 0 0 12px;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--sf-on-dark-muted);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-contactlist {
  margin: 0;
  border-top: 1px solid var(--faq-line-dark);
}

.page-faq .faq-contactlist__row {
  display: grid;
  gap: 3px;
  padding: 13px 0;
  border-bottom: 1px solid var(--faq-line-dark);
}

.page-faq .faq-contactlist dt {
  font-family: var(--sf-font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--sf-steel);
}

.page-faq .faq-contactlist dd {
  margin: 0;
  font-family: var(--sf-font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--sf-on-dark);
  overflow-wrap: anywhere;
}

.page-faq .faq-support__side .sf-copywrap {
  margin-top: 18px;
}

.page-faq .faq-next {
  display: grid;
  margin: clamp(30px, 5vw, 54px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--faq-line-dark);
}

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

.page-faq .faq-next a {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px 20px;
  padding: 14px 2px;
  color: var(--sf-on-dark);
  text-decoration: none;
  transition: color .2s var(--sf-ease);
}

.page-faq .faq-next__k {
  font-size: 15px;
  font-weight: 700;
}

.page-faq .faq-next__v {
  font-size: 13px;
  line-height: 1.6;
  color: var(--sf-on-dark-muted);
}

.page-faq .faq-next a:hover .faq-next__k,
.page-faq .faq-next a:focus-visible .faq-next__k {
  color: var(--sf-orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-faq .faq-contactlist__row {
    grid-template-columns: 88px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 960px) {
  .page-faq {
    --faq-top-offset: 110px;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: var(--faq-top-offset);
    align-self: start;
  }

  .page-faq .faq-support__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-faq .faq-next a {
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 20px;
  }
}

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

  .page-faq .faq-chip:hover {
    transform: none;
  }
}