.page-faq {
  --faq-text: var(--shell);
  --faq-answer: #CBD6E0;
  --faq-muted: var(--slate);
  --faq-hair: rgba(30, 75, 115, 0.65);
  --faq-gap: clamp(24px, 4vw, 56px);
  background: var(--ink);
  color: var(--faq-text);
  overflow-x: hidden;
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--coral-2);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: calc(var(--header-h) + 36px);
  padding-bottom: clamp(36px, 6vw, 68px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(30, 75, 115, 0.62), transparent 62%),
    radial-gradient(70% 60% at 4% 100%, rgba(79, 191, 168, 0.1), transparent 70%),
    var(--ink);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-hero__lead .h-display {
  margin: 0 0 18px;
  max-width: 20em;
}

.page-faq .faq-hero__lead .lede {
  max-width: 34em;
  color: var(--faq-answer);
  font-size: 16px;
  line-height: 1.85;
}

.page-faq .faq-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 220px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  opacity: 0.34;
}

/* ---------- 搜索 ---------- */
.page-faq .faq-search {
  margin-top: clamp(24px, 4vw, 34px);
  max-width: 560px;
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-muted);
}

.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  background: rgba(18, 49, 79, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 180ms var(--ease-out), box-shadow 180ms var(--ease-out);
}

.page-faq .faq-search__field:focus-within {
  border-color: var(--celadon);
  box-shadow: 0 0 0 3px rgba(79, 191, 168, 0.16);
}

.page-faq .faq-search__icon {
  flex: none;
  width: 13px;
  height: 13px;
  border: 1.5px solid var(--slate);
  border-radius: 50%;
  position: relative;
}

.page-faq .faq-search__icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -4px;
  width: 7px;
  height: 1.5px;
  background: var(--slate);
  transform: rotate(45deg);
}

.page-faq .faq-search input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 15px 0;
  border: 0;
  background: transparent;
  color: var(--shell);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  outline: none;
}

.page-faq .faq-search input::placeholder {
  color: rgba(136, 149, 163, 0.85);
}

.page-faq .faq-search__hint {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--faq-muted);
}

/* ---------- 快捷出入口 ---------- */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 49, 79, 0.55);
  color: var(--shell);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 160ms var(--ease-out), color 160ms var(--ease-out);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--coral);
  color: var(--coral-2);
}

.page-faq .faq-jump .data {
  font-size: 11px;
  color: var(--coral);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding: clamp(38px, 6vw, 76px) 0;
}

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

/* ---------- 分类索引 ---------- */
.page-faq .faq-toc__title {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--coral-2);
}

.page-faq .faq-toc ol {
  margin: 0;
  padding: 0 0 0 20px;
  list-style: none;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 15px;
}

.page-faq .faq-toc li {
  position: relative;
}

.page-faq .faq-toc li::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 0.5em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--line);
}

.page-faq .faq-toc li.is-current::before {
  background: var(--coral);
  box-shadow: 0 0 0 4px rgba(255, 107, 74, 0.18);
}

.page-faq .faq-toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--faq-muted);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 160ms var(--ease-out);
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible,
.page-faq .faq-toc li.is-current a {
  color: var(--shell);
}

.page-faq .faq-toc .data {
  font-size: 11px;
  color: var(--coral);
}

.page-faq .faq-toc__note {
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--faq-hair);
  font-size: 12px;
  line-height: 1.8;
  color: var(--faq-muted);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-bottom: clamp(30px, 5vw, 52px);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-group + .faq-group {
  padding-top: clamp(30px, 5vw, 52px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: clamp(12px, 2vw, 20px);
}

.page-faq .faq-group__num {
  flex: none;
  font-family: var(--font-data);
  font-size: clamp(38px, 6vw, 56px);
  font-weight: 700;
  line-height: 0.86;
  letter-spacing: -0.04em;
  color: var(--coral);
}

.page-faq .faq-group__title {
  margin: 2px 0 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-faq .faq-group__desc {
  margin: 8px 0 0;
  max-width: 44em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-muted);
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 17px 0;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .faq-item__q {
  flex: none;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--coral);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--faq-text);
}

.page-faq .faq-item__mark {
  flex: none;
  width: 18px;
  text-align: center;
  font-family: var(--font-data);
  font-size: 18px;
  line-height: 1;
  color: var(--faq-muted);
}

.page-faq .faq-item__mark::before {
  content: "+";
}

.page-faq .faq-item[open] .faq-item__mark {
  color: var(--coral);
}

.page-faq .faq-item[open] .faq-item__mark::before {
  content: "−";
}

.page-faq .faq-item__a {
  padding: 0 0 18px 0;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-answer);
}

.page-faq .faq-item__a a {
  color: var(--coral-2);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-item__anchor {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--faq-muted) !important;
  text-decoration: none !important;
  border-bottom: 1px dotted currentColor;
}

.page-faq .faq-item__anchor:hover,
.page-faq .faq-item__anchor:focus-visible {
  color: var(--coral) !important;
}

/* ---------- 纸白对比组 ---------- */
.page-faq .faq-group--paper {
  --faq-text: var(--ink);
  --faq-answer: #46566A;
  --faq-muted: #5C6B7A;
  --faq-hair: rgba(11, 34, 57, 0.14);
  margin: clamp(28px, 4vw, 44px) 0;
  padding: clamp(22px, 3.4vw, 40px);
  background: var(--paper);
  color: var(--ink);
  border-top: 2px solid var(--coral);
  border-bottom: 0;
  border-radius: var(--radius);
}

.page-faq .faq-group--paper .faq-item__q {
  color: #D8502F;
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 320px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: rgba(18, 49, 79, 0.6);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  max-width: 320px;
  font-family: var(--font-data);
  font-size: 11px;
  line-height: 1.7;
  color: var(--faq-muted);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-help {
  padding: clamp(40px, 6vw, 80px) 0 clamp(48px, 7vw, 92px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 49, 79, 0.85), var(--ink));
}

.page-faq .faq-help__card {
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 34, 57, 0.58);
}

.page-faq .faq-help__card .h-section {
  margin: 0 0 14px;
  max-width: 24em;
}

.page-faq .faq-help__lead {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-answer);
}

.page-faq .faq-help__list {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--shell);
}

.page-faq .faq-help__list .data {
  flex: none;
  font-size: 11px;
  color: var(--coral);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-help__meta {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.9;
  color: var(--faq-muted);
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--faq-muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-help__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 28px;
  }
}

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

  .page-faq .faq-hero__art img {
    max-height: none;
    opacity: 0.42;
  }

  .page-faq .faq-layout {
    grid-template-columns: 224px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }

  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1fr) 260px;
    align-items: start;
  }

  .page-faq .faq-item summary {
    padding: 19px 0;
  }
}

@media (max-width: 599px) {
  .page-faq .faq-group__num {
    font-size: 34px;
  }

  .page-faq .faq-item summary {
    gap: 9px;
  }

  .page-faq .faq-item__text {
    font-size: 15px;
  }

  .page-faq .faq-help__actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-search__field,
  .page-faq .faq-jump a,
  .page-faq .faq-toc a {
    transition: none;
  }
}