.page-faq {
  --faq-body: #B4BACF;
  --faq-ink-soft: rgba(20, 11, 46, 0.78);
  position: relative;
  isolation: isolate;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px var(--gutter) 110px;
  color: var(--paper);
  font-family: var(--sans);
  overflow-x: clip;
}

.page-faq::before {
  content: "";
  position: absolute;
  inset: -140px 0 auto 0;
  height: 600px;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 92% at 8% 0%, rgba(124, 59, 255, 0.38), transparent 72%),
    radial-gradient(44% 78% at 94% 8%, rgba(53, 240, 160, 0.14), transparent 70%);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .breadcrumb a {
  color: var(--violet-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--paper);
  border-bottom-color: var(--green);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 30px;
  padding: 30px 0 52px;
}

.page-faq .faq-eyebrow {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-size: clamp(32px, 6vw, 64px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 20ch;
}

.page-faq .faq-lede {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--faq-body);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--indigo);
}

.page-faq .faq-num {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--paper);
  line-height: 1;
}

.page-faq .faq-cap {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--muted);
}

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

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 38px;
}

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

/* ---------- 类别标签 ---------- */
.page-faq .tablist {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-faq .tablist__btn {
  flex: 0 0 auto;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--faq-ink-soft);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 0.25s var(--ease), color 0.25s var(--ease),
    border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-faq .tablist__btn:hover {
  color: var(--paper);
  border-color: var(--violet-soft);
}

.page-faq .tablist__btn[aria-selected="true"] {
  background: var(--violet);
  border-color: var(--violet);
  color: #FFFFFF;
  box-shadow: 0 10px 28px -16px rgba(124, 59, 255, 1);
}

.page-faq .tablist__btn:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

/* ---------- 面板与章节 ---------- */
.page-faq .faq-panels {
  padding-top: 32px;
}

.page-faq .faq-panel[hidden] {
  display: none;
}

.page-faq .faq-sec + .faq-sec {
  margin-top: 56px;
}

.page-faq .faq-sec__title {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 6px;
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 800;
  line-height: 1.34;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-sec__num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--violet-soft);
  flex: 0 0 auto;
}

.page-faq .faq-sec__lede {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-body);
}

.page-faq .faq-sec__tail {
  margin: 22px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-body);
}

.page-faq .faq-sec__tail a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 160, 0.4);
}

.page-faq .faq-sec__tail a:hover {
  border-bottom-color: var(--green);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa-item {
  margin-top: 12px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--indigo);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(20, 11, 46, 0.72), rgba(7, 7, 12, 0.5));
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-faq .qa-item[open] {
  border-left-color: var(--violet);
  box-shadow: 0 0 0 1px rgba(124, 59, 255, 0.24), 0 22px 44px -34px rgba(124, 59, 255, 0.95);
}

.page-faq .qa-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

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

.page-faq .qa-item > summary::after {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin: 7px 4px 0 auto;
  border-right: 2px solid var(--violet-soft);
  border-bottom: 2px solid var(--violet-soft);
  transform: rotate(45deg);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-faq .qa-item[open] > summary::after {
  transform: rotate(-135deg);
  border-color: var(--green);
  margin-top: 12px;
}

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

.page-faq .qa-a {
  padding: 0 18px 18px 18px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-body);
}

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

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

.page-faq .qa-a a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 160, 0.4);
}

.page-faq .qa-a a:hover {
  border-bottom-color: var(--green);
}

/* ---------- 内文配图 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-2);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 联系渠道块 ---------- */
.page-faq .faq-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.page-faq .faq-channel {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--faq-ink-soft);
}

.page-faq .faq-channel--wide {
  border-color: rgba(255, 176, 32, 0.4);
  background: linear-gradient(160deg, rgba(255, 176, 32, 0.1), rgba(20, 11, 46, 0.8));
}

.page-faq .faq-channel__label {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-channel__value {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-channel__note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-body);
}

.page-faq .faq-channel__note a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 160, 0.4);
}

/* ---------- 右侧联系卡片 ---------- */
.page-faq .faq-side {
  min-width: 0;
}

.page-faq .faq-side__card {
  border: 1px solid var(--indigo);
  border-radius: var(--radius);
  padding: 24px 22px 22px;
  background:
    linear-gradient(158deg, rgba(124, 59, 255, 0.18), rgba(7, 7, 12, 0) 62%),
    var(--ink-2);
  box-shadow: 6px 6px 0 -1px rgba(42, 47, 90, 0.6), 12px 12px 0 -2px rgba(42, 47, 90, 0.3);
}

.page-faq .faq-side__label {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--violet-soft);
}

.page-faq .faq-side__title {
  margin: 12px 0 0;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-side__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-body);
}

.page-faq .faq-side__list {
  margin: 20px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-side__row {
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-side__row dt {
  margin: 0;
}

.page-faq .faq-side__row dd {
  margin: 6px 0 0;
}

.page-faq .faq-side__value {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-side__value a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 160, 0.4);
}

.page-faq .faq-side__value a:hover {
  border-bottom-color: var(--green);
}

.page-faq .faq-side__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-side__btn {
  display: block;
  margin-top: 18px;
  text-align: center;
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .page-faq {
    padding-bottom: 84px;
  }

  .page-faq .faq-hero {
    padding-top: 20px;
    gap: 24px;
  }

  .page-faq .faq-hero__media img {
    aspect-ratio: 3 / 2;
  }

  .page-faq .faq-hero__facts {
    gap: 10px 18px;
  }

  .page-faq .qa-item > summary {
    padding: 15px 15px;
    font-size: 15px;
  }

  .page-faq .qa-a {
    padding: 0 15px 16px 15px;
  }

  .page-faq .faq-figure img {
    aspect-ratio: 4 / 3;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-channel--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 306px;
    gap: 52px;
    align-items: start;
  }

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

  .page-faq .faq-hero h1 {
    max-width: 18ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .tablist__btn,
  .page-faq .qa-item,
  .page-faq .qa-item > summary::after {
    transition: none;
  }
}