.page-faq {
  --faq-card-radius: 24px;
  --faq-rule: rgba(215, 228, 222, 0.12);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  padding-top: clamp(72px, 10vw, 96px);
  padding-bottom: clamp(40px, 6vw, 80px);
  overflow-x: hidden;
}

.page-faq .hl {
  color: var(--cy);
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 14px 0 0;
  list-style: none;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--line);
}

.page-faq .breadcrumb__link {
  color: var(--mist);
  text-decoration: none;
  transition: color 180ms var(--ease);
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--cy);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(18px, 4vw, 34px) clamp(26px, 5vw, 44px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -160px -12% auto -12%;
  height: 560px;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(52% 62% at 22% 6%, rgba(53, 240, 200, 0.17), transparent 68%),
    radial-gradient(46% 56% at 84% 0%, rgba(142, 124, 255, 0.15), transparent 70%);
}

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

.page-faq .eyebrow {
  margin: 0 0 6px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: end;
}

.page-faq .faq-hero__lead h1 {
  margin: 10px 0 0;
  max-width: 17ch;
  font-size: clamp(28px, 5.4vw, 52px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__intro {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hero__visual {
  margin: 0;
  max-width: 280px;
  justify-self: start;
}

.page-faq .faq-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 26px 26px 8px 26px;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.05);
}

/* ---------- 设备路径 ---------- */

.page-faq .faq-paths {
  position: relative;
  padding-block: clamp(20px, 4vw, 36px) clamp(34px, 6vw, 60px);
}

.page-faq .faq-paths__title {
  margin: 0 0 14px;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  transition:
    color 180ms var(--ease),
    background-color 180ms var(--ease),
    border-color 180ms var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--ink);
  background: var(--cy);
  border-color: var(--cy);
}

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

.page-faq .path-card {
  position: relative;
  padding: 20px 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--faq-card-radius) var(--faq-card-radius) var(--faq-card-radius) 8px;
  background: linear-gradient(158deg, rgba(11, 33, 27, 0.96), rgba(6, 18, 15, 0.96));
  overflow: hidden;
  isolation: isolate;
}

.page-faq .path-card::before {
  content: "";
  position: absolute;
  right: -34%;
  bottom: -58%;
  width: 210px;
  height: 210px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--card-accent, var(--cy)), transparent 68%);
  opacity: 0.2;
  z-index: -1;
}

.page-faq .path-card--phone { --card-accent: var(--cy); }
.page-faq .path-card--tablet { --card-accent: var(--violet); }
.page-faq .path-card--desk { --card-accent: var(--orange); }

.page-faq .path-card__index {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--card-accent, var(--cy));
}

.page-faq .path-card__title {
  margin: 0 0 10px;
  font-size: 17.5px;
  line-height: 1.45;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .path-card__text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .path-card__list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .path-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242, 247, 244, 0.82);
}

.page-faq .path-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--card-accent, var(--cy));
  transform: rotate(45deg);
}

/* ---------- 问答分组 ---------- */

.page-faq .faq-group {
  padding-block: clamp(36px, 6vw, 70px);
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  align-items: start;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-group__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: clamp(32px, 9vw, 64px);
  line-height: 0.88;
  font-weight: 700;
  letter-spacing: -0.05em;
  color: rgba(53, 240, 200, 0.1);
  -webkit-text-stroke: 1.5px rgba(53, 240, 200, 0.5);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 3.4vw, 31px);
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__lead {
  margin: 10px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .qa-list {
  border-top: 1px solid rgba(215, 228, 222, 0.14);
}

.page-faq .qa {
  border-bottom: 1px solid rgba(215, 228, 222, 0.1);
}

.page-faq .qa > summary {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
  transition: color 180ms var(--ease);
}

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

.page-faq .qa > summary:hover {
  color: var(--cy-soft);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--cy);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-faq .qa__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cy);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa > summary::after {
  content: "";
  flex: 0 0 auto;
  align-self: center;
  width: 8px;
  height: 8px;
  margin-left: 4px;
  border-right: 1.5px solid var(--cy);
  border-bottom: 1.5px solid var(--cy);
  transform: rotate(-45deg);
  transition: transform 200ms var(--ease);
}

.page-faq .qa[open] > summary::after {
  transform: rotate(45deg);
}

.page-faq .qa__body {
  padding: 0 0 18px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .qa__body p {
  margin: 0;
}

.page-faq .qa__body p + p {
  margin-top: 10px;
}

.page-faq .qa__body strong {
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 14.5px;
}

.page-faq .qa__body a {
  color: var(--cy);
  text-decoration-color: rgba(53, 240, 200, 0.45);
  text-underline-offset: 3px;
}

.page-faq .qa__body a:hover {
  color: var(--cy-soft);
}

/* ---------- 指标解读 ---------- */

.page-faq .faq-band {
  margin: 0 0 clamp(20px, 3vw, 30px);
}

.page-faq .faq-band img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 20px;
  object-fit: cover;
  opacity: 0.88;
}

.page-faq .tbl-fold {
  margin-top: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(11, 33, 27, 0.62);
  overflow: hidden;
}

.page-faq .tbl-fold > summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--cy-soft);
}

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

.page-faq .tbl-fold > summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cy);
}

.page-faq .tbl-fold[open] > summary::before {
  content: "\2212";
}

.page-faq .table-scroll {
  overflow-x: auto;
  border-top: 1px solid var(--line);
}

.page-faq .metric-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 13.5px;
  line-height: 1.6;
}

.page-faq .metric-table th {
  padding: 10px 12px;
  text-align: left;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist);
  background: rgba(18, 58, 46, 0.6);
  border-bottom: 1px solid var(--line);
}

.page-faq .metric-table td {
  padding: 11px 12px;
  vertical-align: top;
  color: rgba(242, 247, 244, 0.86);
  border-bottom: 1px solid rgba(215, 228, 222, 0.08);
}

.page-faq .metric-table td:first-child {
  font-weight: 700;
  color: var(--paper);
  white-space: nowrap;
}

.page-faq .metric-table th:first-child,
.page-faq .metric-table td:first-child {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--ink-2);
  border-right: 1px solid var(--faq-rule);
}

.page-faq .metric-table tbody tr:nth-child(even) td {
  background: rgba(18, 58, 46, 0.34);
}

.page-faq .metric-table tbody tr:nth-child(even) td:first-child {
  background: #0E2A22;
}

.page-faq .metric-table tbody tr:hover td {
  background: rgba(53, 240, 200, 0.12);
}

.page-faq .metric-table tbody tr:hover td:first-child {
  background: #123A2E;
}

.page-faq .calc-note {
  margin-top: clamp(16px, 3vw, 24px);
  padding: 18px 20px;
  border-left: 3px solid var(--orange);
  border-radius: 0 14px 14px 0;
  background: rgba(255, 138, 43, 0.07);
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(242, 247, 244, 0.86);
}

.page-faq .calc-note p {
  margin: 0;
}

.page-faq .calc-note__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .calc-note strong {
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: 15px;
}

.page-faq .calc-note .mono {
  color: var(--paper);
}

/* ---------- 断点 ---------- */

@media (min-width: 800px) {
  .page-faq .faq-paths__grid {
    grid-template-columns: 1.28fr 1fr 0.94fr;
    gap: 18px;
    align-items: start;
  }

  .page-faq .path-card--tablet {
    margin-top: 20px;
  }

  .page-faq .path-card--desk {
    margin-top: 40px;
  }

  .page-faq .faq-group__head {
    column-gap: 22px;
  }

  .page-faq .qa > summary {
    padding: 18px 0;
    font-size: 17.5px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(200px, 0.72fr);
  }

  .page-faq .faq-hero__visual {
    max-width: none;
    justify-self: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa > summary,
  .page-faq .qa > summary::after,
  .page-faq .faq-jump a,
  .page-faq .breadcrumb__link {
    transition: none;
  }
}
<<<END>>>