.page-faq {
  --faq-radius: 12px;
  --faq-hair: rgba(245, 248, 250, 0.14);
  --faq-muted: #5B6B78;
  --faq-stripe: rgba(22, 35, 46, 0.045);
  --faq-card: rgba(11, 43, 68, 0.6);
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-17);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq p {
  margin: 0 0 14px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 24px 0 52px;
  color: var(--canvas);
  background:
    radial-gradient(circle at 88% 4%, rgba(47, 227, 210, 0.18), transparent 50%),
    radial-gradient(circle at 0% 100%, rgba(255, 106, 43, 0.16), transparent 46%),
    var(--deep);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245, 248, 250, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 248, 250, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

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

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-34);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 12px 0 14px;
  max-width: 15em;
}

.page-faq .faq-hero__lede {
  max-width: 60ch;
  font-size: var(--fs-20);
  line-height: 1.7;
  color: rgba(245, 248, 250, 0.82);
  margin: 0;
}

.page-faq .faq-hero__lede strong {
  color: var(--cyan);
  font-weight: 700;
}

.page-faq .faq-hero__figure {
  margin: 32px auto 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--faq-hair);
  border-radius: var(--faq-radius);
  object-fit: cover;
}

/* ---------- 三步路线图 ---------- */
.page-faq .route {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .route__item {
  position: relative;
}

.page-faq .route__link {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 2px 14px;
  padding: 16px 18px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--faq-radius);
  background: var(--faq-card);
  color: var(--canvas);
  text-decoration: none;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-faq .route__link:hover,
.page-faq .route__link:focus-visible {
  border-color: rgba(255, 106, 43, 0.7);
  background: rgba(11, 43, 68, 0.92);
  transform: translateY(-2px);
}

.page-faq .route__num {
  grid-row: 1 / span 3;
  font-family: var(--font-display);
  font-size: var(--fs-34);
  font-weight: 700;
  line-height: 1;
  color: var(--signal);
  letter-spacing: -0.01em;
}

.page-faq .route__label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1.35;
}

.page-faq .route__note {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.02em;
  color: rgba(245, 248, 250, 0.68);
  line-height: 1.5;
}

.page-faq .route__state {
  grid-column: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--cyan);
}

.page-faq .route__state .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-section {
  padding: 52px 0;
}

.page-faq .faq-section--canvas {
  background: var(--canvas);
}

.page-faq .faq-section--desk {
  background: var(--desk);
}

.page-faq .faq-section--deep {
  background: var(--deep);
  color: var(--canvas);
}

.page-faq .faq-head {
  display: grid;
  gap: 8px;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-head__num {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.16em;
  color: var(--ink-orange);
  margin: 0;
}

.page-faq .faq-head h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-26);
  line-height: 1.25;
  margin: 0 0 10px;
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 64ch;
  font-size: var(--fs-17);
  color: var(--faq-muted);
}

.page-faq .faq-head--stack {
  display: block;
  margin-bottom: 16px;
  padding-bottom: 12px;
}

.page-faq .faq-section--deep .faq-head {
  border-bottom-color: rgba(245, 248, 250, 0.16);
}

.page-faq .faq-section--deep .faq-head__num {
  color: var(--cyan);
}

.page-faq .faq-section--deep .faq-lede {
  color: rgba(245, 248, 250, 0.8);
}

/* ---------- 安装步骤 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: 26px;
}

.page-faq .faq-split__main,
.page-faq .faq-split__aside {
  min-width: 0;
}

.page-faq .steps {
  display: grid;
  gap: 14px;
}

.page-faq .step {
  position: relative;
  padding: 18px 18px 18px 62px;
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 2px;
  background: var(--signal);
}

.page-faq .step:target {
  border-color: var(--signal);
  box-shadow: 0 0 0 1px var(--signal);
}

.page-faq .step__num {
  position: absolute;
  left: 18px;
  top: 20px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  color: var(--ink-orange);
}

.page-faq .step__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1.4;
  margin: 0 0 6px;
}

.page-faq .step__text {
  margin: 0 0 10px;
  font-size: var(--fs-17);
}

.page-faq .step__meta {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.02em;
  color: var(--faq-muted);
}

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

.page-faq .faq-device img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  object-fit: cover;
}

.page-faq .faq-device figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  line-height: 1.6;
  color: var(--faq-muted);
}

.page-faq .link-inline {
  color: var(--ink-orange);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .link-inline:hover,
.page-faq .link-inline:focus-visible {
  color: var(--signal);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .qa {
  display: grid;
  border-top: 1px solid var(--line);
}

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

.page-faq .accordion__item h3 {
  margin: 0;
}

.page-faq .accordion__trigger {
  position: relative;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 22px;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 16px 8px 16px 14px;
  border: 0;
  background: transparent;
  text-align: left;
  font-family: var(--font-head);
  font-size: var(--fs-17);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  transition: color 0.2s var(--ease);
}

.page-faq .accordion__trigger::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 2px;
  background: transparent;
  transition: background 0.2s var(--ease);
}

.page-faq .accordion__trigger[aria-expanded="true"]::before {
  background: var(--signal);
}

.page-faq .accordion__trigger[aria-expanded="true"] {
  color: var(--ink-orange);
}

.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-faq .accordion__num {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  color: var(--ink-orange);
}

.page-faq .accordion__title {
  display: block;
}

.page-faq .accordion__sign {
  position: relative;
  width: 14px;
  height: 14px;
  justify-self: end;
}

.page-faq .accordion__sign::before,
.page-faq .accordion__sign::after {
  content: "";
  position: absolute;
  background: var(--ink);
  border-radius: 1px;
}

.page-faq .accordion__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .accordion__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .accordion__panel {
  overflow: hidden;
}

.page-faq .accordion__inner {
  padding: 0 14px 18px 16px;
}

.page-faq .accordion__inner p {
  margin: 0;
  font-size: var(--fs-17);
  color: var(--faq-muted);
}

/* ---------- 清单与版本 ---------- */
.page-faq .faq-duo {
  display: grid;
  gap: 34px;
}

.page-faq .faq-duo > div {
  min-width: 0;
}

.page-faq .fields {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .fields__row {
  display: grid;
  gap: 2px 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .fields__k {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
  color: var(--ink-orange);
  padding-top: 4px;
}

.page-faq .fields__v {
  font-size: var(--fs-17);
}

.page-faq .faq-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--faq-muted);
}

.page-faq .faq-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-faq .faq-legend .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.page-faq .where {
  list-style: none;
  margin: 16px 0 18px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .where__item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  font-size: var(--fs-17);
}

.page-faq .where__num {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--ink-orange);
  padding-top: 5px;
}

/* ---------- 排障速查表 ---------- */
.page-faq .triage {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--canvas);
  -webkit-overflow-scrolling: touch;
}

.page-faq .triage table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  line-height: 1.65;
}

.page-faq .triage th {
  text-align: left;
  padding: 12px 14px;
  background: var(--deep);
  color: var(--canvas);
  font-weight: 500;
  letter-spacing: 0.1em;
}

.page-faq .triage td {
  padding: 13px 14px;
  border-top: 1px solid var(--line);
  vertical-align: top;
}

.page-faq .triage tbody tr:nth-child(odd) {
  background: var(--faq-stripe);
}

.page-faq .triage td:first-child {
  color: var(--ink);
  font-weight: 500;
}

.page-faq .triage__foot {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--faq-muted);
}

/* ---------- 联系引导 ---------- */
.page-faq .reach {
  display: grid;
  margin: 24px 0 0;
  border-top: 1px solid rgba(245, 248, 250, 0.16);
  max-width: 760px;
}

.page-faq .reach__row {
  display: grid;
  gap: 2px 20px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(245, 248, 250, 0.12);
}

.page-faq .reach dt {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.1em;
  color: var(--cyan);
  padding-top: 4px;
}

.page-faq .reach dd {
  margin: 0;
  font-size: var(--fs-17);
  color: rgba(245, 248, 250, 0.9);
  word-break: break-word;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .fields__row {
    grid-template-columns: 104px minmax(0, 1fr);
  }

  .page-faq .reach__row {
    grid-template-columns: 120px minmax(0, 1fr);
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero {
    padding: 32px 0 68px;
  }

  .page-faq .faq-hero h1 {
    font-size: var(--fs-64);
  }

  .page-faq .faq-hero__lede {
    font-size: var(--fs-20);
  }

  .page-faq .faq-hero__figure {
    margin-top: 44px;
  }

  .page-faq .route {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .route__item:not(:last-child)::after {
    content: "→";
    position: absolute;
    right: -16px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: var(--fs-13);
    color: var(--signal);
    pointer-events: none;
  }

  .page-faq .faq-section {
    padding: 84px 0;
  }

  .page-faq .faq-head {
    grid-template-columns: 150px minmax(0, 1fr);
    column-gap: 28px;
    align-items: start;
    margin-bottom: 34px;
    padding-bottom: 22px;
  }

  .page-faq .faq-head__num {
    grid-column: 1;
    grid-row: 1;
    padding-top: 8px;
  }

  .page-faq .faq-head > div {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .faq-head h2 {
    font-size: var(--fs-34);
  }

  .page-faq .faq-head--stack {
    display: block;
    margin-bottom: 18px;
    padding-bottom: 12px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .step {
    padding: 22px 22px 22px 70px;
  }

  .page-faq .step__num {
    left: 22px;
    top: 24px;
  }

  .page-faq .accordion__trigger {
    grid-template-columns: 52px minmax(0, 1fr) 24px;
    padding: 20px 12px 20px 18px;
  }

  .page-faq .accordion__inner {
    padding: 0 24px 24px 72px;
  }

  .page-faq .faq-duo {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
  }

  .page-faq .triage table {
    font-size: var(--fs-13);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .route__link,
  .page-faq .accordion__sign::after,
  .page-faq .accordion__trigger::before,
  .page-faq .step {
    transition: none;
  }

  .page-faq .route__link:hover,
  .page-faq .route__link:focus-visible {
    transform: none;
  }
}