.page-faq {
  --faq-sticky-top: 116px;
  display: block;
}

/* 面包屑 */
.page-faq .crumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 34px);
  padding: 0;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}
.page-faq .crumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
}
.page-faq .crumb-item + .crumb-item::before {
  content: "/";
  color: var(--line-strong);
}
.page-faq .crumb-item a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
.page-faq .crumb-item a:hover,
.page-faq .crumb-item a:focus-visible {
  color: var(--volt);
}
.page-faq .crumb-item a[aria-current="page"] {
  color: var(--paper);
}

/* 首屏：主题索引 */
.page-faq .faq-top {
  position: relative;
  padding: clamp(118px, 15vw, 172px) 0 clamp(34px, 5vw, 62px);
  background:
    radial-gradient(78% 62% at 92% 2%, rgba(215, 164, 71, 0.16), transparent 64%),
    radial-gradient(70% 64% at 0% 14%, rgba(47, 175, 154, 0.16), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink) 56%, rgba(10, 14, 22, 0.94) 100%);
  overflow: hidden;
}
.page-faq .faq-top::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

.page-faq .faq-top-grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  align-items: end;
}
.page-faq .faq-top-copy {
  min-width: 0;
}

.page-faq h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(0.98rem, 1.5vw, 1.06rem);
  line-height: 1.85;
  color: rgba(237, 231, 216, 0.82);
}

.page-faq .faq-top-figure {
  margin: 0;
  box-shadow: 0 34px 80px -46px rgba(10, 14, 22, 0.95);
}

/* 主题索引胶囊 */
.page-faq .faq-index {
  list-style: none;
  margin: clamp(24px, 3.6vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-index a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(27, 41, 66, 0.55);
  color: var(--paper);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}
.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  border-color: var(--volt);
  background: rgba(47, 175, 154, 0.14);
  transform: translateY(-2px);
}
.page-faq .faq-index a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
.page-faq .faq-index-no {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

/* 主体骨架 */
.page-faq .faq-shell {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  padding-top: clamp(34px, 5vw, 58px);
  padding-bottom: clamp(60px, 9vw, 110px);
}
.page-faq .faq-body {
  min-width: 0;
}

/* 左侧主题栏 */
.page-faq .faq-rail {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(27, 41, 66, 0.62), rgba(10, 14, 22, 0.42));
  padding: 18px 16px;
}
.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-faq .faq-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .faq-rail-list a {
  display: block;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: rgba(237, 231, 216, 0.8);
  text-decoration: none;
  font-size: 0.88rem;
  transition:
    color var(--dur) var(--ease),
    background var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}
.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  color: var(--paper);
  background: rgba(47, 175, 154, 0.14);
  border-color: var(--teal);
}
.page-faq .faq-rail-list a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* 区块 */
.page-faq .faq-block {
  scroll-margin-top: clamp(96px, 14vw, 130px);
  padding-bottom: clamp(26px, 4vw, 44px);
  margin-bottom: clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .faq-block:last-child {
  border-bottom: 0;
  padding-bottom: 0;
  margin-bottom: 0;
}

.page-faq .faq-block-head {
  margin-bottom: clamp(16px, 2.4vw, 26px);
}
.page-faq .faq-block-no {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  color: var(--teal);
}
.page-faq .faq-block h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--paper);
}
.page-faq .faq-block-head p {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--mist);
}

/* 手风琴 */
.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(27, 41, 66, 0.66), rgba(16, 26, 46, 0.7));
  margin-bottom: 10px;
  overflow: hidden;
  transition:
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}
.page-faq .qa:hover {
  border-color: var(--line-strong);
}
.page-faq .qa[open] {
  border-color: rgba(84, 224, 198, 0.45);
  background: linear-gradient(180deg, rgba(34, 49, 76, 0.92), rgba(16, 26, 46, 0.92));
}

.page-faq .qa-q {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-weight: 700;
  font-size: clamp(0.95rem, 1.6vw, 1.02rem);
  line-height: 1.55;
}
.page-faq .qa-q::-webkit-details-marker {
  display: none;
}
.page-faq .qa-q::marker {
  content: "";
}
.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -3px;
}
.page-faq .qa-q-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa-caret {
  flex: none;
  position: relative;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.page-faq .qa-caret::before,
.page-faq .qa-caret::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--volt);
  transform: translate(-50%, -50%);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.page-faq .qa-caret::before {
  width: 10px;
  height: 2px;
}
.page-faq .qa-caret::after {
  width: 2px;
  height: 10px;
}
.page-faq .qa:hover .qa-caret {
  border-color: var(--teal);
  background: rgba(47, 175, 154, 0.14);
}
.page-faq .qa[open] .qa-caret::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .qa-a {
  margin: 0 18px;
  padding: 14px 0 18px;
  border-top: 1px solid var(--line-soft);
  color: rgba(237, 231, 216, 0.82);
  font-size: 0.94rem;
  line-height: 1.82;
}
.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(--volt);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .qa-a a:hover {
  color: var(--sand);
}

/* 价格胶囊 */
.page-faq .qa-prices {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.page-faq .qa-prices .tag {
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}
.page-faq .qa-prices .tag:hover {
  transform: translateY(-2px);
  border-color: var(--volt);
}
.page-faq .qa-prices .num {
  font-family: var(--font-mono);
  font-size: 1.05em;
}

/* 设备流程图 */
.page-faq .device-flow {
  display: block;
  box-sizing: border-box;
  width: 100%;
  height: auto;
  margin: 0 0 18px;
  padding: 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: radial-gradient(80% 120% at 50% 0%, rgba(47, 175, 154, 0.1), transparent 70%), rgba(10, 14, 22, 0.42);
}

/* 联系方式面板 */
.page-faq .faq-contact-panel {
  display: grid;
  gap: 18px;
  margin-top: 22px;
  padding: clamp(22px, 3.6vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background:
    radial-gradient(92% 120% at 100% 0%, rgba(215, 164, 71, 0.16), transparent 62%),
    linear-gradient(160deg, rgba(27, 41, 66, 0.9), rgba(10, 14, 22, 0.92));
}
.page-faq .faq-panel-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-faq .faq-panel-note {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-contact-list {
  margin: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-contact-row {
  display: grid;
  gap: 3px;
}
.page-faq .faq-contact-key {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-faq .faq-contact-val {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}
.page-faq .faq-contact-val a {
  color: var(--sand);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 217, 168, 0.35);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-faq .faq-contact-val a:hover,
.page-faq .faq-contact-val a:focus-visible {
  color: var(--volt);
  border-bottom-color: var(--volt);
}
.page-faq .faq-contact-val a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* 延伸入口 */
.page-faq .faq-more {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3.4vw, 32px);
}

/* 平板与桌面 */
@media (min-width: 560px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-top-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-sticky-top);
    padding: 20px 18px;
  }
  .page-faq .faq-rail-list {
    display: grid;
    gap: 2px;
  }
  .page-faq .faq-rail-list a {
    padding: 9px 12px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 var(--r-sm) var(--r-sm) 0;
    font-size: 0.9rem;
  }
  .page-faq .faq-rail-list a:hover,
  .page-faq .faq-rail-list a:focus-visible {
    border-left-color: var(--volt);
    border-radius: 0 var(--r-sm) var(--r-sm) 0;
  }
  .page-faq .faq-contact-panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .qa-q {
    padding: 18px 22px;
  }
  .page-faq .qa-a {
    margin: 0 22px;
    padding-bottom: 20px;
  }
}
<<<END>>>