.page-faq {
  --faq-panel: rgba(10, 29, 43, 0.72);
  --faq-hair: rgba(31, 76, 94, 0.7);
  --faq-soft: rgba(244, 247, 249, 0.04);
  --faq-tint: rgba(123, 108, 246, 0.14);
  background:
    radial-gradient(720px 420px at 82% -6%, rgba(242, 107, 58, 0.16), transparent 66%),
    linear-gradient(180deg, #05101a 0%, #08161f 46%, #05101a 100%);
  color: var(--text);
  overflow-x: hidden;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  margin: 0;
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 14px;
}

.page-faq .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

.page-faq a {
  color: var(--coral-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(123, 108, 246, 0.5);
  transition: color 0.26s var(--ease), border-color 0.26s var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  border-bottom: 1px solid var(--faq-hair);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(31, 76, 94, 0.28) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(31, 76, 94, 0.28) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(circle at 78% 16%, #000 0%, transparent 64%);
  mask-image: radial-gradient(circle at 78% 16%, #000 0%, transparent 64%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 32px;
  padding: clamp(38px, 7vw, 76px) var(--gutter) clamp(34px, 6vw, 62px);
  max-width: var(--wrap);
  margin: 0 auto;
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.page-faq .breadcrumb a {
  color: var(--text-muted);
  border-bottom-color: transparent;
}

.page-faq .breadcrumb a:hover {
  color: var(--coral-soft);
}

.page-faq .breadcrumb__sep {
  color: var(--line);
}

.page-faq .faq-hero h1 {
  font-size: clamp(30px, 7vw, 60px);
  line-height: 1.08;
  font-weight: 800;
  max-width: 15em;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 2px;
  border: 1px solid transparent;
  border-bottom-width: 1px;
  transition: background 0.26s var(--ease), color 0.26s var(--ease), border-color 0.26s var(--ease);
}

.page-faq .btn--primary {
  background: var(--coral);
  color: #05101a;
  border-color: var(--coral);
}

.page-faq .btn--primary:hover,
.page-faq .btn--primary:focus-visible {
  background: var(--coral-soft);
  border-color: var(--coral-soft);
  color: #05101a;
}

.page-faq .btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}

.page-faq .btn--ghost:hover,
.page-faq .btn--ghost:focus-visible {
  border-color: var(--coral);
  color: var(--coral-soft);
}

.page-faq .faq-hero__aside {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  border-top: 1px solid var(--faq-hair);
  padding-top: 18px;
}

.page-faq .annotation {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--violet);
  margin: 0;
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-faq .faq-hero__meta .mono {
  font-size: 18px;
  color: var(--amber);
}

/* ---------- 主体：目录 + 问答 ---------- */
.page-faq .faq-body {
  padding: clamp(40px, 7vw, 82px) 0;
}

.page-faq .faq-body__grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  gap: 34px;
}

.page-faq .faq-toc {
  align-self: start;
  border-left: 2px solid var(--coral);
  padding: 4px 0 4px 18px;
}

.page-faq .faq-toc__title {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin: 0 0 10px;
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-toc__list a .mono {
  font-size: 12px;
  color: var(--violet);
}

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

.page-faq .faq-toc__list a:hover .mono,
.page-faq .faq-toc__list a:focus-visible .mono {
  color: var(--coral);
}

.page-faq .faq-toc__note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-faq .faq-groups {
  display: grid;
  gap: clamp(34px, 5vw, 58px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  border-top: 2px solid var(--coral);
  padding-top: 16px;
  margin-bottom: 6px;
}

.page-faq .faq-group__num {
  font-size: 13px;
  color: var(--violet);
  flex: none;
}

.page-faq .faq-group__head h2 {
  font-size: clamp(20px, 3.4vw, 27px);
  font-weight: 700;
  line-height: 1.28;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
  transition: color 0.26s var(--ease);
}

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

.page-faq .faq-item summary:hover .faq-item__q,
.page-faq .faq-item summary:focus-visible .faq-item__q {
  color: var(--coral-soft);
}

.page-faq .faq-item__q {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--text);
  transition: color 0.26s var(--ease);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  transition: transform 0.3s var(--ease);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--coral);
  transition: background 0.26s var(--ease);
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-item__sign {
  transform: rotate(45deg);
}

.page-faq .faq-item[open] .faq-item__sign::before,
.page-faq .faq-item[open] .faq-item__sign::after {
  background: var(--mint);
}

.page-faq .faq-item__body {
  padding: 0 0 20px;
  animation: faq-fade 0.24s var(--ease) both;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

@keyframes faq-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 速查表 ---------- */
.page-faq .faq-check {
  border-top: 1px solid var(--faq-hair);
  border-bottom: 1px solid var(--faq-hair);
  background:
    linear-gradient(180deg, rgba(10, 29, 43, 0.9), rgba(5, 16, 26, 0.9)),
    repeating-linear-gradient(90deg, transparent 0 23px, rgba(31, 76, 94, 0.22) 23px 24px);
  padding: clamp(38px, 6vw, 68px) 0;
}

.page-faq .faq-check .container {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.page-faq .faq-check__head h2 {
  font-size: clamp(22px, 4vw, 34px);
  font-weight: 800;
  line-height: 1.24;
  max-width: 22em;
}

.page-faq .faq-check__lead {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-faq .faq-check__scroll {
  margin-top: 26px;
  overflow-x: auto;
  border: 1px solid var(--faq-hair);
  background: rgba(5, 16, 26, 0.6);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table__caption {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--amber);
  padding: 12px 16px 0;
  caption-side: top;
}

.page-faq .faq-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 400;
  padding: 14px 16px;
  border-bottom: 1px solid var(--faq-hair);
  white-space: nowrap;
}

.page-faq .faq-table td {
  padding: 15px 16px;
  color: var(--text);
  border-bottom: 1px solid rgba(31, 76, 94, 0.45);
  vertical-align: top;
}

.page-faq .faq-table tbody tr:nth-child(even) {
  background: var(--faq-soft);
}

.page-faq .faq-table tbody tr:hover {
  background: rgba(242, 107, 58, 0.08);
}

.page-faq .faq-table td:first-child {
  width: 62px;
  border-left: 3px solid var(--coral);
}

.page-faq .faq-table td:first-child .mono {
  color: var(--amber);
  font-size: 13px;
}

.page-faq .faq-table td:nth-child(2) {
  font-weight: 600;
  white-space: nowrap;
}

.page-faq .faq-table td:nth-child(3) {
  color: var(--text-muted);
  line-height: 1.7;
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: none;
}

/* ---------- 版本与时间戳 ---------- */
.page-faq .faq-sync {
  padding: clamp(40px, 7vw, 84px) 0;
}

.page-faq .faq-sync__grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  gap: 34px;
}

.page-faq .faq-sync__text h2 {
  font-size: clamp(23px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.22;
  max-width: 16em;
}

.page-faq .faq-sync__text p {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-faq .faq-sync__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-sync__list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--faq-hair);
  font-size: 14px;
  color: var(--text);
}

.page-faq .faq-sync__list .mono {
  flex: none;
  min-width: 66px;
  font-size: 13px;
  color: var(--amber);
}

.page-faq .faq-sync__tail {
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-muted);
}

.page-faq .faq-sync__visual {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-faq .faq-ring {
  width: clamp(120px, 32vw, 180px);
  height: auto;
  justify-self: end;
  opacity: 0.92;
}

.page-faq .faq-ring__hand {
  transform-origin: 90px 90px;
  animation: faq-spin 8s linear infinite;
}

@keyframes faq-spin {
  to { transform: rotate(360deg); }
}

.page-faq .media-frame {
  position: relative;
  border: 1px solid var(--line);
  background: var(--ink-700);
  overflow: hidden;
}

.page-faq .media-frame--sync {
  aspect-ratio: 10 / 7;
}

.page-faq .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.06);
}

.page-faq .media-frame__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 5px 11px;
  font-size: 10px;
  letter-spacing: 0.16em;
  background: var(--paper);
  color: #05101a;
}

/* ---------- 咨询收尾 ---------- */
.page-faq .faq-help {
  position: relative;
  padding: clamp(40px, 7vw, 84px) 0 clamp(52px, 8vw, 96px);
  border-top: 1px solid var(--faq-hair);
  overflow: hidden;
}

.page-faq .faq-help__inner {
  position: relative;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  gap: 26px;
}

.page-faq .faq-help__card {
  position: relative;
  z-index: 2;
  border: 1px solid var(--line);
  background: rgba(18, 48, 63, 0.86);
  padding: clamp(24px, 4vw, 42px);
  border-left: 3px solid var(--coral);
}

.page-faq .faq-help__card h2 {
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 800;
  line-height: 1.24;
}

.page-faq .faq-help__card > p {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-help__list li {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(31, 76, 94, 0.6);
  font-size: 14px;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-help__list .mono {
  font-size: 15px;
  color: var(--amber);
}

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

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

.page-faq .faq-help__bg {
  position: absolute;
  inset: auto 0 0 auto;
  width: 66%;
  max-width: 520px;
  opacity: 0.24;
  z-index: 1;
  pointer-events: none;
}

.page-faq .faq-help__bg img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  -webkit-mask-image: radial-gradient(circle at 70% 70%, #000 0%, transparent 72%);
  mask-image: radial-gradient(circle at 70% 70%, #000 0%, transparent 72%);
}

/* ---------- 响应式 ---------- */
@media (min-width: 860px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) 190px;
    align-items: start;
    gap: 48px;
  }

  .page-faq .faq-hero__aside {
    flex-direction: column;
    align-items: flex-end;
    border-top: none;
    border-right: 1px solid var(--faq-hair);
    padding: 0 22px 0 0;
    margin-top: 46px;
    text-align: right;
  }

  .page-faq .faq-hero__meta li {
    justify-content: flex-end;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-sync__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.6fr);
    align-items: end;
  }

  .page-faq .faq-help__bg {
    position: relative;
    inset: auto;
    width: 100%;
    max-width: none;
    opacity: 0.55;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-ring__hand {
    animation: none;
  }

  .page-faq .faq-item__body {
    animation: none;
  }

  .page-faq .faq-item__sign {
    transition: none;
  }
}