/* ===== 常见问题 · 页面专属样式 ===== */

.page-faq {
  --faq-answer: rgba(245, 243, 236, 0.82);
  --faq-hair: rgba(27, 74, 60, 0.55);
  --faq-gap: 28px;
}

/* --- 页头 --- */
.page-faq .breadcrumb {
  padding-top: 20px;
}

.page-faq .faq-hero {
  padding-block: 16px 8px;
}

.page-faq .faq-title {
  margin: 14px 0 0;
  max-width: 20ch;
  font-size: clamp(34px, 7.6vw, 78px);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-faq .faq-lede {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero-stats li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--ink-2);
}

.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: -0.02em;
}

.page-faq .faq-stat-label {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* --- 分类导航 --- */
.page-faq .faq-cats {
  padding-block: 24px 8px;
}

.page-faq .faq-cats-lede {
  max-width: 56ch;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-cats-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 30px;
}

.page-faq .faq-cats-visual {
  margin: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, var(--ink-2) 0%, var(--ink) 70%);
  overflow: hidden;
}

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

.page-faq .faq-cat-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-cat-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 16px;
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-2);
  text-decoration: none;
  color: inherit;
  transition: transform 0.24s var(--ease-out), border-color 0.24s ease, background 0.24s ease;
}

.page-faq .faq-cat-card:hover,
.page-faq .faq-cat-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--gold);
  background: rgba(201, 162, 39, 0.08);
}

.page-faq .faq-cat-idx {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-cat-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-faq .faq-cat-desc {
  grid-column: 2;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* --- 主体两栏 --- */
.page-faq .faq-body {
  padding-block: 40px 8px;
}

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

.page-faq .faq-toc {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-2);
  padding: 14px 16px;
}

.page-faq .faq-toc-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-toc ul {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-toc a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--ivory);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  border-color: var(--gold);
  color: var(--gold-soft);
}

.page-faq .faq-toc-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

/* --- 问题分组 --- */
.page-faq .faq-group {
  scroll-margin-top: 88px;
  padding-bottom: 46px;
}

.page-faq .faq-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding-bottom: 14px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--faq-hair);
}

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

.page-faq .faq-group-title {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-faq .faq-group-figure {
  margin: 0 0 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--ink-2);
}

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

/* --- 问答块 --- */
.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-2);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.22s ease;
}

.page-faq .faq-item[open] {
  border-color: rgba(201, 162, 39, 0.55);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}

.page-faq .faq-q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ivory);
}

.page-faq .faq-tag {
  flex: none;
  display: none;
}

.page-faq .faq-marker {
  flex: none;
  position: relative;
  width: 24px;
  height: 24px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color 0.22s ease, transform 0.22s ease;
}

.page-faq .faq-marker::before,
.page-faq .faq-marker::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--gold);
  transform: translate(-50%, -50%);
}

.page-faq .faq-marker::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .faq-marker::after {
  width: 1.5px;
  height: 10px;
  transition: transform 0.22s var(--ease-out);
}

.page-faq .faq-item[open] .faq-marker {
  border-color: var(--gold);
  transform: rotate(90deg);
}

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

.page-faq .faq-a {
  padding: 0 18px 18px;
  color: var(--faq-answer);
  font-size: 14.5px;
  line-height: 1.85;
}

.page-faq .faq-item[open] .faq-a {
  animation: faqReveal 0.28s var(--ease-out) both;
}

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

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

.page-faq .faq-a ul {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-a li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 7px;
}

.page-faq .faq-a li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-faq .faq-a a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 215, 134, 0.4);
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  border-bottom-color: var(--gold-soft);
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- 术语速查 --- */
.page-faq .faq-gloss {
  padding-block: 46px 8px;
}

.page-faq .faq-gloss-lede {
  max-width: 58ch;
  margin: 16px 0 26px;
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
}

.page-faq .faq-gloss-table {
  width: 100%;
  min-width: 640px;
}

.page-faq .faq-gloss-table th,
.page-faq .faq-gloss-table td {
  vertical-align: top;
  text-align: left;
  padding: 14px 16px;
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .faq-gloss-table thead th {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-text-soft);
}

.page-faq .faq-gloss-key {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink-text);
  white-space: nowrap;
}

/* --- 联系收尾 --- */
.page-faq .faq-contact {
  padding-block: 44px 8px;
}

.page-faq .faq-contact-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(139, 92, 246, 0.16) 0%, transparent 55%),
    linear-gradient(150deg, var(--ink-2) 0%, var(--ink) 78%);
}

.page-faq .faq-contact-title {
  margin: 12px 0 14px;
  font-size: clamp(22px, 4.6vw, 34px);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-faq .faq-contact-text {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-contact-text a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 215, 134, 0.4);
}

.page-faq .faq-contact-text a:hover,
.page-faq .faq-contact-text a:focus-visible {
  border-bottom-color: var(--gold-soft);
}

.page-faq .faq-contact-side {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 18px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius-md);
  background: rgba(11, 31, 26, 0.55);
}

.page-faq .faq-contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 16px;
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--faq-hair);
}

.page-faq .faq-contact-row:last-of-type {
  border-bottom: 0;
  padding-bottom: 4px;
}

.page-faq .faq-contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-contact-value {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--gold-soft);
  word-break: break-all;
}

.page-faq .faq-contact-btn {
  margin-top: 8px;
  justify-self: start;
  text-decoration: none;
}

/* --- 中等屏幕 --- */
@media (min-width: 860px) {
  .page-faq .faq-cats-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-tag {
    display: inline-flex;
  }

  .page-faq .faq-item summary {
    padding: 17px 20px;
  }

  .page-faq .faq-q {
    font-size: 16.5px;
  }

  .page-faq .faq-a {
    padding: 0 20px 20px;
    font-size: 15px;
  }

  .page-faq .faq-contact-card {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 36px;
    padding: 34px 32px;
    align-items: start;
  }
}

/* --- 桌面端：左侧粘性目录 + 右侧问题流 --- */
@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 52px;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-toc ul {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc a {
    display: flex;
    width: 100%;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
    padding: 9px 14px;
    color: var(--muted);
  }

  .page-faq .faq-toc a:hover,
  .page-faq .faq-toc a:focus-visible {
    border-left-color: var(--gold);
    background: rgba(201, 162, 39, 0.08);
    color: var(--ivory);
  }

  .page-faq .faq-group {
    padding-bottom: 56px;
  }

  .page-faq .faq-group-title {
    font-size: 26px;
  }

  .page-faq .faq-cats-visual img {
    min-height: 260px;
    object-fit: cover;
  }
}

/* --- 动效降级 --- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat-card,
  .page-faq .faq-marker,
  .page-faq .faq-marker::after,
  .page-faq .faq-item {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-a {
    animation: none;
  }

  .page-faq .faq-cat-card:hover,
  .page-faq .faq-cat-card:focus-visible {
    transform: none;
  }
}