.page-faq {
  --faq-panel: rgba(16, 41, 36, .92);
  --faq-line: rgba(38, 67, 60, .9);
  --faq-navy: rgba(11, 27, 51, .62);
  background: var(--ink);
  color: var(--text);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 36px;
  overflow: hidden;
  border-bottom: 1px solid var(--faq-line);
  background:
    radial-gradient(760px 380px at 88% -12%, rgba(201, 255, 77, .12), transparent 62%),
    radial-gradient(520px 320px at 4% 110%, rgba(72, 227, 203, .1), transparent 66%),
    linear-gradient(180deg, rgba(11, 27, 51, .9), rgba(6, 18, 15, 0));
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(38, 67, 60, .34) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(38, 67, 60, .34) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 84%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 84%);
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero-copy {
  max-width: 68ch;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-hero .lead {
  font-size: var(--fs-2);
  line-height: 1.78;
  color: var(--muted);
  margin: 0;
}

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

/* ---------- 步骤速览条 ---------- */

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

.page-faq .step-track a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 12px 14px;
  text-decoration: none;
  color: var(--text);
  background: rgba(11, 27, 51, .58);
  border: 1px solid var(--faq-line);
  border-top: 2px solid var(--lime);
  transition: background 220ms var(--ease), border-color 220ms var(--ease), color 220ms var(--ease);
}

.page-faq .step-track a:hover,
.page-faq .step-track a:focus-visible {
  background: rgba(201, 255, 77, .09);
  border-color: rgba(201, 255, 77, .6);
  color: var(--lime);
}

.page-faq .track-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-faq .track-label {
  font-size: var(--fs-1);
  line-height: 1.5;
  color: var(--muted);
}

.page-faq .step-track a:hover .track-label,
.page-faq .step-track a:focus-visible .track-label {
  color: var(--text);
}

/* ---------- 两栏主体 ---------- */

.page-faq .faq-layout {
  padding: 32px 0 64px;
}

.page-faq .faq-layout-inner {
  display: grid;
  gap: 26px;
}

.page-faq .faq-index {
  padding: 12px;
  background: var(--faq-navy);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-index-head {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--muted);
}

.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index-list li {
  flex: 0 0 auto;
}

.page-faq .faq-index .index-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 10px;
  font-size: var(--fs-1);
  white-space: nowrap;
  text-decoration: none;
  color: var(--muted);
  border-left: 2px solid transparent;
  transition: color 180ms var(--ease), background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-index .index-link:hover,
.page-faq .faq-index .index-link:focus-visible {
  color: var(--text);
  background: rgba(72, 227, 203, .08);
}

.page-faq .faq-index .index-link[data-active] {
  color: var(--lime);
  border-left-color: var(--lime);
  background: rgba(201, 255, 77, .07);
}

.page-faq .rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--grid);
}

.page-faq .faq-index .index-link[data-active] .rail-num {
  color: var(--lime);
}

/* ---------- 章节通用 ---------- */

.page-faq .faq-block {
  padding: 30px 0 8px;
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-block:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-block-head {
  max-width: 64ch;
  margin-bottom: 22px;
}

.page-faq .faq-block-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--amber);
  border: 1px solid rgba(255, 166, 43, .42);
  background: rgba(255, 166, 43, .07);
}

.page-faq .faq-block-head .section-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: var(--fs-3);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-block-head .lead {
  margin: 0;
  font-size: var(--fs-2);
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-flow a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(72, 227, 203, .35);
}

.page-faq .faq-flow a:hover,
.page-faq .faq-flow a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---------- 步骤折叠卡 ---------- */

.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--gap);
}

.page-faq .step-card {
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  border-left: 3px solid rgba(201, 255, 77, .5);
  transition: border-color 220ms var(--ease), background 220ms var(--ease);
}

.page-faq .step-card[open] {
  background: rgba(16, 41, 36, 1);
  border-left-color: var(--lime);
}

.page-faq .step-card summary {
  list-style: none;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
}

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

.page-faq .step-card summary::after {
  content: "";
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--lime);
  border-bottom: 2px solid var(--lime);
  transform: rotate(45deg);
  transition: transform 240ms var(--ease);
}

.page-faq .step-card[open] summary::after {
  transform: rotate(-135deg);
}

.page-faq .step-card summary:hover .step-title,
.page-faq .step-card summary:focus-visible .step-title {
  color: var(--lime);
}

.page-faq .step-num {
  font-family: var(--font-mono);
  font-size: var(--fs-3);
  font-weight: 700;
  line-height: 1;
  padding: 7px 10px;
  color: var(--lime);
  background: rgba(201, 255, 77, .07);
  border: 1px solid rgba(201, 255, 77, .32);
}

.page-faq .step-title {
  font-size: var(--fs-2);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
  transition: color 180ms var(--ease);
}

.page-faq .step-hint {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.page-faq .step-body {
  margin: 0 18px;
  padding: 14px 0 18px;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .step-body p {
  margin: 0 0 10px;
  font-size: var(--fs-2);
  line-height: 1.78;
  color: var(--text);
}

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

.page-faq .step-body .step-check {
  margin-top: 6px;
  padding-left: 12px;
  font-size: var(--fs-1);
  line-height: 1.75;
  color: var(--teal);
  border-left: 2px solid var(--teal);
}

/* ---------- 收藏夹区块 ---------- */

.page-faq .faq-split {
  display: grid;
  gap: 22px;
}

.page-faq .field-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .field-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 13px 15px;
  background: rgba(16, 41, 36, .78);
  border-left: 2px solid var(--grid);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .field-list li:hover {
  border-left-color: var(--lime);
  background: rgba(16, 41, 36, 1);
}

.page-faq .field-name {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--lime);
}

.page-faq .field-desc {
  flex: 1 1 200px;
  font-size: var(--fs-1);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-shot {
  margin: 0;
  aspect-ratio: 1200 / 800;
  background: linear-gradient(140deg, var(--navy), var(--ink));
  border: 1px solid var(--faq-line);
  overflow: hidden;
}

.page-faq .faq-shot--tall {
  aspect-ratio: 900 / 1200;
}

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

.page-faq .faq-shot .media-frame__caption {
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 比对区块 ---------- */

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

.page-faq .compare-card {
  position: relative;
  padding: 22px 20px 20px;
  background: linear-gradient(155deg, rgba(16, 41, 36, .96), rgba(11, 27, 51, .72));
  border: 1px solid var(--faq-line);
  transition: border-color 220ms var(--ease);
}

.page-faq .compare-card:hover {
  border-color: rgba(201, 255, 77, .55);
}

.page-faq .compare-num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ink);
  background: var(--lime);
}

.page-faq .compare-card h3 {
  margin: 0 0 10px;
  font-size: var(--fs-2);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}

.page-faq .compare-card p {
  margin: 0;
  font-size: var(--fs-1);
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 移动端区块 ---------- */

.page-faq .mobile-grid {
  display: grid;
  gap: 22px;
}

.page-faq .mobile-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--gap);
}

.page-faq .mobile-points li {
  padding: 15px 16px;
  background: var(--faq-navy);
  border: 1px solid var(--faq-line);
  border-top: 2px solid rgba(72, 227, 203, .55);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .mobile-points li:hover {
  border-top-color: var(--teal);
  background: rgba(11, 27, 51, .85);
}

.page-faq .mobile-points strong {
  display: block;
  margin-bottom: 6px;
  font-size: var(--fs-2);
  font-weight: 700;
  color: var(--teal);
}

.page-faq .mobile-points p {
  margin: 0;
  font-size: var(--fs-1);
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 排查区块 ---------- */

.page-faq .trouble-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--gap);
}

.page-faq .trouble-card {
  position: relative;
  padding: 22px 20px 20px;
  background: rgba(6, 18, 15, .68);
  border: 1px solid var(--faq-line);
  transition: border-color 220ms var(--ease), background 220ms var(--ease);
}

.page-faq .trouble-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--amber);
}

.page-faq .trouble-card:hover {
  border-color: rgba(255, 166, 43, .55);
  background: rgba(16, 41, 36, .6);
}

.page-faq .trouble-num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-4);
  line-height: 1;
  color: var(--amber);
}

.page-faq .trouble-card h3 {
  margin: 0 0 10px;
  font-size: var(--fs-2);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}

.page-faq .trouble-card p {
  margin: 0;
  font-size: var(--fs-1);
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 问答表 ---------- */

.page-faq .qa-shell {
  border: 1px solid var(--faq-line);
  background: rgba(6, 18, 15, .55);
  overflow-x: auto;
}

.page-faq .qa-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: var(--fs-1);
}

.page-faq .qa-table thead th {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--muted);
  background: rgba(11, 27, 51, .85);
  border-bottom: 1px solid var(--faq-line);
  white-space: nowrap;
}

.page-faq .qa-table tbody th,
.page-faq .qa-table tbody td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa-table tbody tr:last-child th,
.page-faq .qa-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .qa-table tbody tr {
  transition: background 170ms var(--ease);
}

.page-faq .qa-table tbody tr:hover {
  background: rgba(201, 255, 77, .07);
}

.page-faq .qa-q {
  width: 38%;
  min-width: 160px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .qa-a {
  font-weight: 400;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-hero h1 {
    font-size: var(--fs-5);
  }

  .page-faq .faq-block-head .section-title {
    font-size: var(--fs-4);
  }

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

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

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

@media (min-width: 1000px) {
  .page-faq .step-track {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-faq .faq-layout-inner {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-faq .faq-index-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index-list li + li {
    margin-top: 2px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
    gap: 28px;
  }

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

@media (max-width: 639px) {
  .page-faq .step-hint {
    display: none;
  }

  .page-faq .step-card summary {
    gap: 12px;
    padding: 14px 15px;
  }

  .page-faq .step-body {
    margin: 0 15px;
  }

  .page-faq .qa-shell {
    -webkit-overflow-scrolling: touch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-card summary::after,
  .page-faq .step-card,
  .page-faq .field-list li,
  .page-faq .compare-card,
  .page-faq .mobile-points li,
  .page-faq .trouble-card,
  .page-faq .qa-table tbody tr,
  .page-faq .step-track a,
  .page-faq .faq-index .index-link {
    transition: none;
  }
}
.