.page-faq {
  --faq-line: rgba(244, 237, 226, 0.16);
  --faq-card: rgba(244, 237, 226, 0.05);
  --faq-q: var(--paper);
  --faq-a: rgba(244, 237, 226, 0.78);
  display: block;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq .faq-section {
  padding: 3.5rem 0;
}

.page-faq .faq-band--dark { background: var(--ink-soft); color: var(--paper); }
.page-faq .faq-band--ink { background: var(--ink); color: var(--paper); }
.page-faq .faq-band--paper { background: var(--paper); color: var(--ink); }
.page-faq .faq-band--jade { background: var(--jade); color: #ffffff; }

.page-faq .faq-band--paper {
  --faq-line: rgba(20, 17, 15, 0.14);
  --faq-card: #ffffff;
  --faq-q: var(--ink);
  --faq-a: rgba(20, 17, 15, 0.74);
}

.page-faq .faq-band--jade {
  --faq-line: rgba(255, 255, 255, 0.26);
  --faq-card: rgba(255, 255, 255, 0.1);
  --faq-q: #ffffff;
  --faq-a: rgba(255, 255, 255, 0.88);
}

.page-faq section[id],
.page-faq .faq-device[id] {
  scroll-margin-top: 7rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 2.2rem 0 3rem;
  background: var(--ink);
  border-bottom: 1px solid var(--ink-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -24%;
  bottom: -45%;
  width: 84%;
  height: 130%;
  background: linear-gradient(165deg, var(--ink-soft) 30%, rgba(181, 52, 42, 0.3));
  clip-path: polygon(42% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cinnabar), var(--gold));
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--smoke);
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--paper-soft);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-h1 {
  margin: 1rem 0 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.95rem, 7vw, 3.2rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 1rem 0 0;
  max-width: 56ch;
  font-size: 1rem;
  line-height: 1.78;
  color: rgba(244, 237, 226, 0.82);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.6rem;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--ink-line-strong, rgba(244, 237, 226, 0.26));
  border-radius: var(--radius-pill);
  background: rgba(244, 237, 226, 0.04);
  color: var(--paper);
  font-size: 0.875rem;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-jump__k {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
  transform: translateY(-2px);
}

.page-faq .faq-jump__link:hover .faq-jump__k,
.page-faq .faq-jump__link:focus-visible .faq-jump__k {
  color: var(--ink);
}

.page-faq .faq-jump__link:focus-visible,
.page-faq .faq-item__q:focus-visible,
.page-faq .faq-cta__card:focus-visible,
.page-faq .faq-flow-nav a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- 章节标题 ---------- */
.page-faq .faq-head {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  margin-bottom: 1.75rem;
}

.page-faq .faq-head__num {
  padding-top: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  white-space: nowrap;
  color: var(--gold);
}

.page-faq .faq-band--paper .faq-head__num { color: var(--cinnabar); }
.page-faq .faq-band--jade .faq-head__num { color: var(--gold-soft); }

.page-faq .faq-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4.6vw, 2.05rem);
  line-height: 1.24;
  letter-spacing: -0.005em;
}

.page-faq .faq-head__note {
  margin: 0.6rem 0 0;
  max-width: 58ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--smoke);
}

.page-faq .faq-band--paper .faq-head__note { color: rgba(20, 17, 15, 0.66); }
.page-faq .faq-band--jade .faq-head__note { color: rgba(255, 255, 255, 0.86); }

/* ---------- 问答卡 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  background: var(--faq-card);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(216, 169, 58, 0.55);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  border-color: var(--jade-light);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  padding: 0.95rem 2.6rem 0.95rem 1rem;
  list-style: none;
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.65;
  color: var(--faq-q);
}

.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: 1.1rem;
  top: 1.35rem;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--smoke);
  border-bottom: 2px solid var(--smoke);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(-135deg);
}

.page-faq .faq-item__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--jade);
  padding-top: 0.2rem;
}

.page-faq .faq-band--dark .faq-item__idx,
.page-faq .faq-band--ink .faq-item__idx { color: var(--jade-light); }
.page-faq .faq-band--jade .faq-item__idx { color: var(--gold-soft); }

.page-faq .faq-item__a {
  padding: 0 1.1rem 1rem 1rem;
  color: var(--faq-a);
  font-size: 0.9rem;
  line-height: 1.78;
  animation: faq-answer-in 200ms var(--ease);
}

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

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a { animation: none; }
  .page-faq .faq-item:hover { transform: none; }
}

/* ---------- 按设备 ---------- */
.page-faq .faq-device-layout {
  display: grid;
  gap: 2rem;
}

.page-faq .faq-device-main {
  display: grid;
  gap: 1.6rem;
}

.page-faq .faq-device {
  padding-top: 1.4rem;
  border-top: 1px solid var(--ink-line);
}

.page-faq .faq-device:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-device__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 0.75rem;
  margin-bottom: 0.95rem;
}

.page-faq .faq-device__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--gold);
  border: 1px solid rgba(216, 169, 58, 0.5);
  border-radius: var(--radius-sm);
  padding: 0.15rem 0.5rem;
}

.page-faq .faq-device__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-device__desc {
  flex: 1 0 100%;
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--smoke);
}

.page-faq .faq-device-aside {
  order: -1;
}

.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
  background: linear-gradient(160deg, var(--ink-soft), rgba(47, 122, 107, 0.35));
}

.page-faq .faq-figure--wide {
  margin-top: 2rem;
}

.page-faq .media-caption {
  margin: 0.6rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--smoke);
}

.page-faq .faq-band--paper .media-caption { color: rgba(20, 17, 15, 0.6); }

/* ---------- 下载与打开 ---------- */
.page-faq .faq-download-grid {
  display: grid;
  gap: 0.7rem;
}

/* ---------- 版本 ---------- */
.page-faq .faq-version-layout {
  display: grid;
  gap: 1.5rem;
}

.page-faq .faq-stamp {
  padding: 1.5rem 1.2rem;
  border: 1px solid rgba(181, 52, 42, 0.42);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(181, 52, 42, 0.12), rgba(216, 169, 58, 0.1));
  text-align: center;
}

.page-faq .faq-stamp__mark {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  border: 2px solid var(--cinnabar);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cinnabar);
}

.page-faq .faq-stamp__label {
  margin: 0.85rem 0 0;
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  color: rgba(20, 17, 15, 0.72);
}

.page-faq .faq-stamp__text {
  margin: 0.55rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(20, 17, 15, 0.66);
}

/* ---------- 排查四步 ---------- */
.page-faq .faq-flow-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.page-faq .faq-flow-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-pill);
  color: #ffffff;
  font-size: 0.8125rem;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .faq-flow-nav .mono {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--gold-soft);
}

.page-faq .faq-flow-nav a:hover,
.page-faq .faq-flow-nav a:focus-visible {
  background: #ffffff;
  border-color: #ffffff;
  color: var(--jade);
}

.page-faq .faq-flow-nav a:hover .mono,
.page-faq .faq-flow-nav a:focus-visible .mono {
  color: var(--cinnabar);
}

.page-faq .faq-flow {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding: 1.1rem 1.05rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.1);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-step:hover {
  background: rgba(255, 255, 255, 0.16);
  transform: translateY(-3px);
}

.page-faq .faq-step:target {
  border-color: var(--gold-soft);
  box-shadow: 0 0 0 2px rgba(240, 201, 122, 0.35);
}

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--gold-soft);
}

.page-faq .faq-step__title {
  margin: 0.45rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  color: #ffffff;
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.88);
}

/* ---------- 收束 ---------- */
.page-faq .faq-cta__title {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-cta__text {
  margin: 0.7rem 0 0;
  max-width: 56ch;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: rgba(244, 237, 226, 0.78);
}

.page-faq .faq-cta__links {
  display: grid;
  gap: 0.7rem;
  margin-top: 1.7rem;
}

.page-faq .faq-cta__card {
  display: block;
  padding: 1.1rem 1.1rem 1.2rem;
  border: 1px solid rgba(244, 237, 226, 0.18);
  border-radius: var(--radius-md);
  background: rgba(244, 237, 226, 0.04);
  color: var(--paper);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.page-faq .faq-cta__card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-cta__card p {
  margin: 0.45rem 0 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: rgba(244, 237, 226, 0.72);
}

.page-faq .faq-cta__card:hover,
.page-faq .faq-cta__card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--gold);
  background: rgba(216, 169, 58, 0.12);
}

.page-faq .faq-cta__contact {
  margin: 1.6rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.9;
  color: var(--smoke);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero { padding: 3rem 0 3.6rem; }
  .page-faq .faq-download-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.85rem; }
  .page-faq .faq-cta__links { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
}

@media (min-width: 880px) {
  .page-faq .faq-section { padding: 5.5rem 0; }
  .page-faq .faq-h1 { font-size: clamp(2.4rem, 4.4vw, 3.25rem); }
  .page-faq .faq-hero__lede { font-size: 1.0625rem; }
}

@media (min-width: 960px) {
  .page-faq .faq-device-layout {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.85fr);
    gap: 2.5rem;
    align-items: start;
  }
  .page-faq .faq-device-aside {
    order: 0;
    position: sticky;
    top: 7rem;
  }
  .page-faq .faq-version-layout {
    grid-template-columns: minmax(0, 0.62fr) minmax(0, 1.38fr);
    gap: 2.4rem;
    align-items: start;
  }
  .page-faq .faq-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.4rem;
  }
  .page-faq .faq-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -0.85rem;
    width: 7px;
    height: 7px;
    border-top: 2px solid rgba(255, 255, 255, 0.6);
    border-right: 2px solid rgba(255, 255, 255, 0.6);
    transform: translateY(-50%) rotate(45deg);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-list--wide {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
  }
}