.page-faq {
  --faq-rail: 250px;
  background: var(--ink-900);
  color: var(--paper-100);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 56px;
  border-bottom: 2px solid var(--line-600);
  background-image: repeating-linear-gradient(90deg, rgba(56, 225, 255, .055) 0 1px, transparent 1px 80px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 38%;
  right: -10%;
  width: 58%;
  height: 2px;
  background: linear-gradient(270deg, transparent, var(--cyan-400) 46%, var(--orange-500));
  transform: rotate(-13deg);
  transform-origin: right center;
  opacity: .5;
  pointer-events: none;
}

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

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  font-size: var(--step-12);
  letter-spacing: .12em;
  color: var(--steel-400);
}

.page-faq .breadcrumb a {
  color: var(--cyan-200);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan-400);
}

.page-faq .hero-grid {
  display: grid;
  gap: 28px;
}

.page-faq .hero-main h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 7.4vw, var(--step-62));
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--paper-100);
  text-wrap: balance;
}

.page-faq .hero-lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: var(--step-17);
  line-height: 1.75;
  color: var(--steel-400);
}

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

.page-faq .hero-side {
  padding: 20px;
  background: var(--ink-800);
  border: var(--edge);
  border-left: 6px solid var(--orange-500);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .hero-side-title {
  margin: 0 0 12px;
  font-size: var(--step-12);
  letter-spacing: .18em;
  color: var(--steel-400);
}

.page-faq .hero-jump {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .hero-jump a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 2px;
  border-bottom: 1px solid rgba(42, 67, 112, .7);
  color: var(--paper-100);
  text-decoration: none;
  font-size: var(--step-14);
  line-height: 1.5;
}

.page-faq .hero-jump li:last-child a {
  border-bottom: 0;
}

.page-faq .hero-jump a:hover,
.page-faq .hero-jump a:focus-visible {
  color: var(--cyan-400);
}

.page-faq .hero-jump .num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--step-12);
  color: var(--cyan-400);
}

/* ---------- 步骤分屏 ---------- */
.page-faq .steps-shell {
  display: grid;
  gap: 24px;
}

.page-faq .steps-nav {
  padding: 16px;
  background: var(--ink-800);
  border: var(--edge);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .steps-nav-title {
  margin: 0 0 12px;
  padding-left: 10px;
  font-size: var(--step-12);
  letter-spacing: .18em;
  color: var(--steel-400);
}

.page-faq .steps-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
}

.page-faq .steps-nav-list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 10px;
  border-left: 3px solid transparent;
  color: var(--steel-400);
  text-decoration: none;
  font-size: var(--step-14);
  line-height: 1.45;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .steps-nav-list a:hover,
.page-faq .steps-nav-list a:focus-visible {
  border-left-color: var(--cyan-400);
  background: var(--panel-700);
  color: var(--paper-100);
}

.page-faq .steps-nav-list .num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--step-12);
  color: var(--cyan-400);
}

.page-faq .steps-body {
  display: grid;
  gap: 24px;
  min-width: 0;
}

.page-faq .step {
  padding: 24px 20px;
  background: var(--ink-800);
  border: var(--edge);
  box-shadow: var(--shadow-hard-sm);
  scroll-margin-top: 96px;
}

.page-faq .step-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--line-600);
}

.page-faq .step-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--step-30);
  line-height: .9;
  letter-spacing: -.04em;
  color: var(--cyan-400);
}

.page-faq .step-kicker {
  margin: 0 0 6px;
  font-size: var(--step-12);
  letter-spacing: .18em;
  color: var(--steel-400);
}

.page-faq .step-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step-22);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--paper-100);
}

.page-faq .step-lede {
  margin: 18px 0 0;
  max-width: 68ch;
  font-size: var(--step-17);
  line-height: 1.75;
  color: var(--steel-400);
}

.page-faq .step-tail {
  margin: 18px 0 0;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--steel-400);
}

.page-faq .step-tail .link {
  color: var(--cyan-400);
}

/* 流程列表 */
.page-faq .flow {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .flow > li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 16px;
  background: var(--panel-700);
  border-left: 3px solid var(--cyan-400);
}

.page-faq .flow-num {
  font-family: var(--font-mono);
  font-size: var(--step-22);
  line-height: 1;
  color: var(--cyan-400);
}

.page-faq .flow h3 {
  margin: 0 0 6px;
  font-size: var(--step-17);
  font-weight: 700;
  color: var(--paper-100);
}

.page-faq .flow p {
  margin: 0;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--steel-400);
}

/* 四维条件 */
.page-faq .dim-list {
  margin: 22px 0 0;
  display: grid;
  gap: 2px;
}

.page-faq .dim {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(22, 41, 74, .6);
  border-left: 3px solid var(--cyan-500);
}

.page-faq .dim dt {
  font-family: var(--font-display);
  font-size: var(--step-17);
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--cyan-200);
}

.page-faq .dim dd {
  margin: 0;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--steel-400);
}

/* 组合示例 */
.page-faq .combo-grid {
  margin-top: 20px;
  display: grid;
  gap: 14px;
}

.page-faq .combo {
  padding: 16px;
  border: 2px dashed var(--line-600);
  background: rgba(5, 11, 24, .5);
}

.page-faq .combo-label {
  margin: 0 0 10px;
  font-size: var(--step-12);
  letter-spacing: .16em;
  color: var(--orange-500);
}

.page-faq .combo-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-14);
  line-height: 1.65;
  color: var(--cyan-200);
  word-break: break-word;
}

.page-faq .combo-note {
  margin: 10px 0 0;
  font-size: var(--step-14);
  line-height: 1.65;
  color: var(--steel-400);
}

/* 要点列表 */
.page-faq .point-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .point-list li {
  position: relative;
  padding-left: 22px;
  font-size: var(--step-14);
  line-height: 1.75;
  color: var(--steel-400);
}

.page-faq .point-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .58em;
  width: 8px;
  height: 8px;
  background: var(--cyan-400);
}

.page-faq .point-list strong {
  margin-right: 6px;
  color: var(--paper-100);
  font-weight: 700;
}

/* 导出失败提示 */
.page-faq .warn-box {
  margin-top: 20px;
  padding: 16px 18px;
  border: 2px solid var(--orange-500);
  background: rgba(255, 122, 47, .07);
}

.page-faq .warn-title {
  margin: 0 0 10px;
  font-size: var(--step-14);
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--orange-500);
}

.page-faq .warn-box ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--steel-400);
}

.page-faq .media-frame {
  margin: 22px 0 0;
}

/* 刷新节奏 */
.page-faq .lamp-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  padding: 12px 16px;
  border: 2px solid var(--line-600);
  background: rgba(5, 11, 24, .6);
}

.page-faq .lamp-dot {
  flex: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 0 rgba(56, 225, 255, .5);
  animation: faq-pulse 3s var(--ease) infinite;
}

.page-faq .lamp-text {
  font-family: var(--font-mono);
  font-size: var(--step-14);
  letter-spacing: .02em;
  color: var(--cyan-200);
}

@keyframes faq-pulse {
  0%, 86%, 100% {
    background: var(--cyan-400);
    box-shadow: 0 0 0 0 rgba(56, 225, 255, .5);
  }
  93% {
    background: var(--orange-500);
    box-shadow: 0 0 0 9px rgba(255, 122, 47, 0);
  }
}

/* 联系准备清单 */
.page-faq .checklist {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .checklist > li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background: rgba(22, 41, 74, .55);
}

.page-faq .check-mark {
  width: 14px;
  height: 14px;
  margin-top: 5px;
  border: 2px solid var(--cyan-400);
  position: relative;
}

.page-faq .check-mark::after {
  content: "";
  position: absolute;
  inset: 2px;
  background: var(--cyan-400);
}

.page-faq .checklist strong {
  display: block;
  margin-bottom: 4px;
  font-size: var(--step-14);
  color: var(--paper-100);
}

.page-faq .checklist p {
  margin: 0;
  font-size: var(--step-14);
  line-height: 1.65;
  color: var(--steel-400);
}

.page-faq .contact-strip {
  margin-top: 20px;
  padding: 16px 18px;
  background: var(--ink-900);
  border-left: 6px solid var(--orange-500);
}

.page-faq .contact-strip p {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: var(--step-14);
  color: var(--paper-100);
  word-break: break-word;
}

.page-faq .contact-key {
  margin-right: 8px;
  font-family: var(--font-body);
  font-size: var(--step-12);
  letter-spacing: .1em;
  color: var(--steel-400);
}

.page-faq .contact-strip .contact-note {
  margin: 10px 0 0;
  font-family: var(--font-body);
  font-size: var(--step-12);
  line-height: 1.65;
  color: var(--steel-400);
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-qa {
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 100%);
}

.page-faq .qa-head {
  max-width: 68ch;
}

.page-faq .qa-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--step-30);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--paper-100);
}

.page-faq .qa-lede {
  margin: 14px 0 0;
  font-size: var(--step-17);
  line-height: 1.7;
  color: var(--steel-400);
}

.page-faq .qa-list {
  margin-top: 30px;
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  border: var(--edge);
  background: var(--ink-800);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--cyan-400);
}

.page-faq .qa summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: var(--step-17);
  line-height: 1.5;
  color: var(--paper-100);
  transition: background .2s var(--ease);
}

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

.page-faq .qa summary::marker {
  content: "";
}

.page-faq .qa summary:hover {
  background: var(--panel-700);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: -2px;
}

.page-faq .qa-index {
  flex: none;
  width: 28px;
  font-family: var(--font-mono);
  font-size: var(--step-12);
  letter-spacing: .06em;
  color: var(--cyan-400);
}

.page-faq .qa-question {
  flex: 1;
  min-width: 0;
}

.page-faq .qa-arrow {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: -4px;
  border-right: 2px solid var(--steel-400);
  border-bottom: 2px solid var(--steel-400);
  transform: rotate(45deg);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .qa[open] .qa-arrow {
  margin-top: 4px;
  border-color: var(--cyan-400);
  transform: rotate(225deg);
}

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

.page-faq .qa-body p {
  margin: 0;
  max-width: 68ch;
  font-size: var(--step-14);
  line-height: 1.75;
  color: var(--steel-400);
}

/* ---------- 出口条 ---------- */
.page-faq .next-grid {
  display: grid;
  gap: 12px;
}

.page-faq .next-link {
  display: block;
  padding: 20px;
  background: var(--ink-800);
  border: var(--edge);
  color: var(--paper-100);
  text-decoration: none;
  transition: border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .next-link:hover,
.page-faq .next-link:focus-visible {
  border-color: var(--cyan-400);
  box-shadow: var(--shadow-hard-sm);
  transform: translate(-2px, -2px);
}

.page-faq .next-tag {
  display: block;
  margin-bottom: 8px;
  font-size: var(--step-12);
  letter-spacing: .18em;
  color: var(--cyan-400);
}

.page-faq .next-title {
  display: block;
  font-family: var(--font-display);
  font-size: var(--step-22);
  font-weight: 700;
  line-height: 1.32;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .step {
    padding: 32px 28px;
  }

  .page-faq .qa summary {
    padding: 18px 20px;
    gap: 16px;
  }

  .page-faq .qa-body {
    padding: 0 20px 20px 64px;
  }

  .page-faq .combo-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 34px 0 72px;
  }

  .page-faq .step-head h2 {
    font-size: var(--step-30);
  }

  .page-faq .qa-head h2 {
    font-size: var(--step-44);
  }

  .page-faq .dim {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

  .page-faq .next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: 56px;
  }
}

@media (min-width: 960px) {
  .page-faq .steps-shell {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .steps-nav {
    position: sticky;
    top: 88px;
  }

  .page-faq .steps-nav-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .steps-body {
    gap: 32px;
  }

  .page-faq .step {
    padding: 38px 34px;
    box-shadow: var(--shadow-hard);
  }
}

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

  .page-faq .next-link,
  .page-faq .qa-arrow,
  .page-faq .qa summary,
  .page-faq .steps-nav-list a {
    transition: none;
  }

  .page-faq .next-link:hover,
  .page-faq .next-link:focus-visible {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>