.page-faq {
  --faq-line: rgba(195, 202, 214, 0.14);
  --faq-line-strong: rgba(195, 202, 214, 0.28);
  --faq-panel: rgba(13, 24, 48, 0.72);
  --faq-panel-soft: rgba(23, 39, 74, 0.42);
  padding-bottom: clamp(56px, 9vw, 104px);
}

.page-faq [id] {
  scroll-margin-top: 84px;
}

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

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  margin: 18px auto 0;
  width: var(--shell);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--rock);
}

.page-faq .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(195, 202, 214, 0.4);
}

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

.page-faq .crumbs a:hover {
  text-decoration: underline;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(16px, 2.6vw, 30px);
}

.page-faq .hero-frame {
  position: relative;
  overflow: hidden;
}

.page-faq .hero-frame .frame-inner {
  padding: clamp(26px, 4.6vw, 62px) clamp(20px, 4vw, 56px);
  background:
    radial-gradient(120% 150% at 0% 0%, var(--cyan-08), transparent 58%),
    radial-gradient(90% 130% at 100% 0%, var(--violet-12), transparent 62%);
}

.page-faq .hero-frame .eyebrow {
  color: var(--cyan);
}

.page-faq h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.2vw, 58px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--cream);
  max-width: 15em;
}

.page-faq .lede {
  margin: 18px 0 0;
  max-width: 52ch;
  color: var(--rock);
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.85;
}

.page-faq .hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--rock);
}

.page-faq .hero-meta b {
  color: var(--cyan);
  font-weight: 700;
  margin-right: 4px;
}

/* ---------- 四步流程 ---------- */
.page-faq .flow-zone {
  margin-top: clamp(40px, 6vw, 72px);
}

.page-faq .flow-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 4.2vw, 36px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--cream);
  max-width: 20em;
}

.page-faq .flow-head p {
  margin: 12px 0 0;
  max-width: 56ch;
  color: var(--rock);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .flow-track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-faq .flow-link {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  gap: 2px 14px;
  align-items: center;
  height: 100%;
  padding: 15px 18px;
  border: 1px solid var(--faq-line);
  border-left: 2px solid var(--faq-line-strong);
  background: var(--faq-panel);
  color: var(--rock);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .flow-track li:first-child .flow-link {
  border-left-color: var(--amber);
}

.page-faq .flow-link:hover,
.page-faq .flow-link:focus-visible {
  transform: translateY(-3px);
  border-color: var(--cyan-45);
  background: rgba(23, 39, 74, 0.62);
}

.page-faq .flow-num {
  grid-row: 1 / span 2;
  align-self: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-faq .flow-track li:first-child .flow-num {
  color: var(--amber);
}

.page-faq .flow-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--cream);
}

.page-faq .flow-time {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(195, 202, 214, 0.72);
}

.page-faq .faq-figure {
  margin: clamp(26px, 4vw, 40px) 0 0;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border: 1px solid var(--faq-line);
}

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

.page-faq .media-caption {
  display: block;
  padding: 10px 12px 0;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: rgba(195, 202, 214, 0.7);
}

.page-faq .flow-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 26px;
}

.page-faq .flow-step {
  padding: 20px 20px 22px;
  border: 1px solid var(--faq-line);
  border-top: 2px solid var(--faq-line-strong);
  background: var(--faq-panel-soft);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .flow-step:hover {
  transform: translateY(-3px);
  border-top-color: var(--cyan);
}

.page-faq .flow-step-meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--terracotta);
}

.page-faq .flow-step h3 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  color: var(--cream);
}

.page-faq .flow-step p {
  margin: 0;
  color: var(--rock);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-faq .flow-step .flow-tip {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 2px solid var(--violet-45);
  color: rgba(195, 202, 214, 0.85);
  font-size: 13.5px;
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin-top: clamp(44px, 7vw, 80px);
}

.page-faq .faq-index {
  padding: 20px 18px 18px;
  border: 1px solid var(--faq-line);
  background: var(--faq-panel);
}

.page-faq .index-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

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

.page-faq .idx-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px 9px 10px;
  border-left: 2px solid transparent;
  color: var(--rock);
  font-size: 14.5px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .idx-link:hover,
.page-faq .idx-link:focus-visible {
  border-left-color: var(--cyan);
  background: var(--cyan-08);
  color: var(--cream);
}

.page-faq .idx-num {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .dock-card {
  margin-top: 22px;
  padding: 16px 14px;
  background: var(--cream);
  border: 1px solid var(--terracotta);
  box-shadow: 0 10px 24px rgba(6, 13, 30, 0.5);
}

.page-faq .dock-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  color: var(--ink-900);
}

.page-faq .dock-text {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: #3a4358;
}

.page-faq .dock-mail {
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--ink-900);
  word-break: break-all;
}

.page-faq .dock-btn {
  margin-top: 14px;
  width: 100%;
  display: inline-flex;
  justify-content: center;
  border-color: var(--ink-900);
  color: var(--ink-900);
  font-size: 14px;
}

.page-faq .dock-btn:hover {
  background: var(--ink-900);
  color: var(--cream);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-sec + .faq-sec {
  margin-top: clamp(42px, 6vw, 64px);
}

.page-faq .sec-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-line-strong);
}

.page-faq .sec-num {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3.6vw, 29px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-faq .sec-lead {
  margin: 14px 0 6px;
  max-width: 58ch;
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.75;
  color: rgba(195, 202, 214, 0.9);
}

.page-faq details {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq details > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 34px 15px 14px;
  border-left: 2px solid transparent;
  cursor: pointer;
  list-style: none;
  position: relative;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--cream);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.page-faq details > summary::after {
  content: "+";
  position: absolute;
  right: 10px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
}

.page-faq details[open] > summary::after {
  content: "–";
}

.page-faq details > summary:hover {
  background: var(--cyan-08);
  border-left-color: var(--cyan-28);
}

.page-faq details[open] > summary {
  border-left-color: var(--cyan);
  background: var(--cyan-08);
}

.page-faq .q-num {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--cyan);
  flex: 0 0 auto;
}

.page-faq .answer {
  margin: 0;
  padding: 2px 20px 20px 30px;
  border-left: 2px solid transparent;
  max-width: 60ch;
  color: var(--rock);
  font-size: 15px;
  line-height: 1.88;
}

.page-faq details[open] .answer {
  border-left-color: var(--cyan-28);
}

.page-faq .sec-more {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(195, 202, 214, 0.8);
}

.page-faq .sec-more a,
.page-faq .support-back a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-28);
}

.page-faq .sec-more a:hover,
.page-faq .support-back a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 安装区 ---------- */
.page-faq .install-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 8px;
}

.page-faq .faq-figure-sq {
  margin: 0;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: var(--faq-panel-soft);
  max-width: 420px;
}

/* ---------- 术语表 ---------- */
.page-faq .glossary {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 18px 0 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .term {
  padding: 12px 0;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .term dt {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--cyan);
}

.page-faq .term dd {
  margin: 5px 0 0;
  color: var(--rock);
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- 联系区 ---------- */
.page-faq .support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 20px;
}

.page-faq .support-card {
  padding: 18px 18px 20px;
  border: 1px solid var(--faq-line);
  border-left: 2px solid var(--terracotta);
  background: var(--faq-panel-soft);
}

.page-faq .support-key {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--terracotta);
}

.page-faq .support-val {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  color: var(--cream);
  word-break: break-all;
}

.page-faq .support-val-sm {
  font-size: 15px;
  line-height: 1.6;
  font-weight: 700;
}

.page-faq .support-note {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(195, 202, 214, 0.82);
}

.page-faq .support-back {
  margin: 22px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(195, 202, 214, 0.85);
}

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

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

  .page-faq .glossary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

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

@media (min-width: 860px) {
  .page-faq .flow-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-faq .flow-track li {
    position: relative;
  }

  .page-faq .flow-track li + li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 10px;
    height: 1px;
    background: var(--cyan-28);
    transform: translate(-50%, -50%);
    z-index: 1;
  }

  .page-faq .flow-link {
    border-left-width: 1px;
  }

  .page-faq .flow-track li:first-child .flow-link {
    border-left-color: var(--amber);
    border-left-width: 2px;
  }

  .page-faq .install-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
    gap: 30px;
  }

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

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

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

  .page-faq .answer {
    padding-left: 34px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-body {
    grid-template-columns: 260px minmax(0, 1fr);
  }

  .page-faq .install-grid {
    grid-template-columns: minmax(0, 1fr) 360px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .flow-link,
  .page-faq .flow-step,
  .page-faq .idx-link,
  .page-faq details > summary {
    transition: none;
  }

  .page-faq .flow-link:hover,
  .page-faq .flow-step:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>