.page-faq {
  --faq-radius: 18px;
  --faq-gap: clamp(1.5rem, 3vw, 2.75rem);
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

.page-faq .breadcrumbs {
  padding-top: clamp(1rem, 3vw, 1.75rem);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.page-faq img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-faq .media-frame__img {
  width: 100%;
  object-fit: cover;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.75rem) 0 clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 88% 8%, rgba(0, 229, 255, 0.16), transparent 46%),
    radial-gradient(circle at 2% 88%, rgba(255, 107, 26, 0.13), transparent 42%);
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .faq-hero__copy .eyebrow {
  color: var(--cyan);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  margin: 0 0 1rem;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.05rem, 7.4vw, 3.5rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  margin: 0 0 1.15rem;
  max-width: 18ch;
}

.page-faq .faq-hero__lead {
  margin: 0 0 clamp(1.5rem, 3vw, 2rem);
  font-size: clamp(0.98rem, 1.6vw, 1.1rem);
  line-height: 1.78;
  color: var(--text-muted);
  max-width: 48ch;
}

.page-faq .faq-routes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-route a {
  display: grid;
  gap: 0.3rem;
  padding: 0.95rem 1.1rem;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--line-strong);
  background: rgba(245, 247, 244, 0.035);
  text-decoration: none;
  transition: background var(--t-fast), transform var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-route a:hover,
.page-faq .faq-route a:focus-visible {
  background: rgba(245, 247, 244, 0.075);
  transform: translateX(3px);
}

.page-faq .faq-route--cyan a { border-left-color: var(--cyan); }
.page-faq .faq-route--orange a { border-left-color: var(--orange); }
.page-faq .faq-route--green a { border-left-color: var(--green); }

.page-faq .faq-route__k {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--pearl);
}

.page-faq .faq-route--cyan a:hover .faq-route__k { color: var(--cyan); }
.page-faq .faq-route--orange a:hover .faq-route__k { color: var(--orange); }
.page-faq .faq-route--green a:hover .faq-route__k { color: var(--green); }

.page-faq .faq-route__d {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.page-faq .faq-hero__visual .media-frame {
  border-radius: var(--faq-radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-hero__visual .media-frame__caption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--mist);
  padding: 0.7rem 0.9rem;
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  padding-top: clamp(1rem, 3vw, 2rem);
}

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

/* 检索轴 */
.page-faq .faq-axis {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--graphite);
  padding: 1.15rem 1.1rem 1.35rem;
}

.page-faq .faq-axis__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-axis__nav {
  display: grid;
  gap: 0.35rem;
}

.page-faq .faq-axis__link {
  display: block;
  padding: 0.5rem 0.7rem;
  border-radius: 8px;
  border-left: 2px solid var(--line-strong);
  color: var(--text-muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-axis__link:hover,
.page-faq .faq-axis__link:focus-visible {
  color: var(--pearl);
  background: rgba(245, 247, 244, 0.06);
}

.page-faq .faq-axis__link--cyan:hover { border-left-color: var(--cyan); }
.page-faq .faq-axis__link--orange:hover { border-left-color: var(--orange); }
.page-faq .faq-axis__link--green:hover { border-left-color: var(--green); }

.page-faq .faq-axis__versions {
  margin-top: 1.4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.page-faq .version-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.page-faq .version-list li {
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  color: var(--pearl);
  letter-spacing: 0.03em;
}

.page-faq .version-list li:last-child {
  border-color: var(--orange);
  color: var(--orange);
}

.page-faq .faq-axis__foot {
  margin: 1.2rem 0 0;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-axis__inline {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
}

.page-faq .faq-axis__inline:hover { border-bottom-color: var(--cyan); }

/* 问答流 */
.page-faq .faq-flow {
  display: grid;
  gap: clamp(2rem, 4vw, 3.25rem);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
  border-top: 1px solid var(--line);
  padding-top: 1.4rem;
}

.page-faq .faq-group__head {
  position: relative;
  padding-left: 1rem;
  margin-bottom: 1.25rem;
}

.page-faq .faq-group__mark {
  position: absolute;
  left: 0;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 3px;
  border-radius: 3px;
  background: var(--cyan);
}

.page-faq .faq-group__mark--orange { background: var(--orange); }
.page-faq .faq-group__mark--green { background: var(--green); }

.page-faq .faq-group__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.4vw, 1.85rem);
  letter-spacing: 0.01em;
  margin: 0 0 0.55rem;
  color: var(--pearl);
}

.page-faq .faq-group__lead {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 60ch;
}

/* 关系图 */
.page-faq .faq-map {
  margin: 0 0 1.5rem;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: linear-gradient(160deg, var(--graphite-2), var(--ink-800));
}

.page-faq .faq-map svg {
  width: 100%;
  height: auto;
  display: block;
}

.page-faq .faq-map text {
  font-family: var(--font-mono);
  font-size: 12px;
  fill: var(--pearl);
}

.page-faq .faq-map figcaption {
  margin-top: 0.7rem;
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--mist);
}

/* 手风琴 */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  font-weight: 600;
  line-height: 1.55;
  color: var(--pearl);
  transition: color var(--t-fast);
}

.page-faq .qa__q::-webkit-details-marker { display: none; }
.page-faq .qa__q::marker { content: ""; }

.page-faq .qa__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.4;
  color: var(--cyan);
}

.page-faq .qa[open] .qa__q::after {
  content: "−";
}

.page-faq .qa__q:hover { color: var(--cyan); }

.page-faq .qa__a {
  padding: 0 0 1.15rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 68ch;
}

.page-faq .qa__a p { margin: 0 0 0.75rem; }
.page-faq .qa__a p:last-child { margin-bottom: 0; }

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
}

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

.page-faq .qa__a strong { color: var(--pearl); font-weight: 600; }

.page-faq .qa__list {
  list-style: none;
  margin: 0.5rem 0 0.9rem;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .qa__list li {
  position: relative;
  padding-left: 1rem;
  line-height: 1.7;
}

.page-faq .qa__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--steel);
}

.page-faq .faq-mono {
  font-family: var(--font-mono);
  font-size: 0.88em;
  letter-spacing: 0.02em;
  color: var(--pearl);
  background: rgba(0, 229, 255, 0.09);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  word-break: break-all;
}

/* 数据同步区 */
.page-faq .faq-sync {
  display: grid;
  gap: 1.1rem;
  margin-bottom: 1.4rem;
  padding: 1.1rem;
  border-radius: var(--faq-radius);
  border: 1px solid var(--line);
  background: var(--graphite);
}

.page-faq .faq-sync__text p {
  margin: 0 0 0.75rem;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--text-muted);
}

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

.page-faq .faq-sync__visual img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  opacity: 0.85;
}

/* 帮助区 */
.page-faq .faq-help {
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
  background: var(--pearl);
  color: var(--ink-900);
  border-radius: var(--faq-radius);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.22), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-help__inner {
  position: relative;
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-help__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  line-height: 1.15;
  margin: 0 0 0.7rem;
  color: var(--ink-900);
}

.page-faq .faq-help__lead {
  margin: 0 0 1.25rem;
  font-size: 0.93rem;
  line-height: 1.78;
  color: #33403c;
  max-width: 52ch;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem 1.2rem;
}

.page-faq .faq-help__btn {
  display: inline-block;
  padding: 0.7rem 1.3rem;
  border-radius: var(--radius-pill);
  background: var(--ink-900);
  color: var(--pearl);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--t-fast), transform var(--t-fast);
}

.page-faq .faq-help__btn:hover,
.page-faq .faq-help__btn:focus-visible {
  background: var(--steel);
  transform: translateY(-1px);
}

.page-faq .faq-help__link {
  font-size: 0.85rem;
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid rgba(44, 95, 111, 0.45);
}

.page-faq .faq-help__link:hover { border-bottom-color: var(--steel); }

.page-faq .faq-help__contacts {
  list-style: none;
  margin: 0;
  padding: 1rem 0 0;
  border-top: 1px solid rgba(7, 11, 15, 0.12);
  display: grid;
  gap: 1rem;
}

.page-faq .faq-help__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #5d6b67;
  margin-bottom: 0.3rem;
}

.page-faq .faq-help__value {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-900);
  word-break: break-all;
}

.page-faq .faq-help__contacts .faq-mono {
  background: transparent;
  padding: 0;
  color: var(--ink-900);
}

.page-faq .faq-help__note {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.78rem;
  line-height: 1.6;
  color: #5d6b67;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-routes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-faq .faq-hero__visual {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-faq .faq-sync {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: center;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-axis {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: 3.5rem;
  }

  .page-faq .qa__a {
    font-size: 0.95rem;
  }
}