.page-faq {
  --faq-rail-w: 208px;
  --faq-side-w: 244px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 60px) 0 clamp(30px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(11, 43, 51, 0.62), rgba(8, 21, 15, 0) 72%),
    var(--bg);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(to right, rgba(44, 71, 64, 0.38) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(44, 71, 64, 0.38) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(125% 85% at 82% 0%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(125% 85% at 82% 0%, #000 0%, transparent 72%);
}

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

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 17ch;
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.4vw, 16.5px);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--surface);
}

.page-faq .faq-hero__facts .num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-hero__facts li > span:last-child {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  padding-top: clamp(30px, 5vw, 62px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 左侧目录 ---------- */
.page-faq .faq-toc__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-toc__link {
  display: block;
  padding: 11px 14px;
  background: var(--surface);
  border-left: 3px solid transparent;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.5;
  text-decoration: none;
  transition: background 0.16s var(--ease), color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-left-color: var(--lime);
  background: var(--surface-2);
  color: var(--lime);
  outline: none;
}

/* ---------- 章节 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-sec {
  padding-top: clamp(28px, 4vw, 46px);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-sec + .faq-sec {
  margin-top: clamp(34px, 5vw, 62px);
}

.page-faq .faq-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: start;
}

.page-faq .faq-sec__idx {
  grid-row: 1 / span 2;
  padding-top: 7px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-size: clamp(20px, 2.8vw, 30px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-sec__note {
  grid-column: 2;
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 折叠面板 ---------- */
.page-faq .faq-quick {
  display: grid;
  gap: 1px;
  margin-top: 22px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-fold {
  background: var(--surface);
}

.page-faq .faq-fold--wide {
  margin-top: 22px;
  border: 1px solid var(--line);
}

.page-faq .faq-fold__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  list-style: none;
  cursor: pointer;
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  transition: background 0.16s var(--ease), color 0.16s var(--ease);
}

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

.page-faq .faq-fold__summary:hover,
.page-faq .faq-fold__summary:focus-visible {
  background: var(--surface-2);
  color: var(--lime);
  outline: none;
}

.page-faq .faq-fold[open] > .faq-fold__summary {
  background: var(--surface-2);
  color: var(--lime);
}

.page-faq .faq-fold__chev {
  flex: none;
  margin-left: auto;
  width: 9px;
  height: 9px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  opacity: 0.75;
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-fold[open] .faq-fold__chev {
  transform: rotate(-135deg);
}

.page-faq .faq-fold__body {
  padding: 0 18px 18px;
}

.page-faq .faq-fold[open] .faq-fold__body {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-fold__body p {
  margin: 0 0 10px;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-faq .faq-fold__body .faq-fold__more {
  margin-top: 12px;
  font-size: 14px;
}

/* ---------- 费用图 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 0;
  border: 1px solid var(--line);
  background: var(--teal);
}

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

.page-faq .faq-figure__cap {
  padding: 11px 16px;
  border-top: 1px solid var(--line);
  background: var(--surface);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 三档 ---------- */
.page-faq .faq-tiers {
  display: grid;
  gap: 1px;
  margin-top: 22px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-tier {
  padding: 20px 18px 22px;
  background: var(--surface);
  transition: background 0.18s var(--ease);
}

.page-faq .faq-tier:hover {
  background: var(--surface-2);
}

.page-faq .faq-tier__meter {
  display: block;
  position: relative;
  height: 4px;
  margin-bottom: 18px;
  background: var(--surface-2);
}

.page-faq .faq-tier__meter::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 32%;
  background: var(--muted);
}

.page-faq .faq-tier:nth-child(2) .faq-tier__meter::after {
  width: 64%;
  background: var(--lime);
}

.page-faq .faq-tier:nth-child(3) .faq-tier__meter::after {
  width: 100%;
  background: var(--lime-soft);
}

.page-faq .faq-tier__tag {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.page-faq .faq-tier__desc {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-tier__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-faq .faq-tier__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-tier__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 1px;
  background: var(--lime);
}

.page-faq .faq-tier__fit {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--amber);
}

/* ---------- 表格 ---------- */
.page-faq .faq-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table__cap {
  padding: 10px 14px;
  text-align: left;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.7;
}

.page-faq .faq-table th {
  width: 32%;
  background: var(--surface-2);
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-table td {
  color: var(--muted);
}

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

/* ---------- 节奏步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 26px 0 0 8px;
  padding: 0;
  border-left: 1px solid var(--line);
}

.page-faq .faq-steps li {
  position: relative;
  padding: 0 0 24px 22px;
}

.page-faq .faq-steps li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps li::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 5px;
  width: 7px;
  height: 7px;
  background: var(--lime);
}

.page-faq .faq-steps__t {
  display: block;
  margin-bottom: 5px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-steps p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 指标定义 ---------- */
.page-faq .faq-metrics {
  display: grid;
  gap: 1px;
  margin: 24px 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-metric {
  padding: 15px 18px;
  background: var(--surface);
  transition: background 0.16s var(--ease);
}

.page-faq .faq-metric:hover {
  background: var(--surface-2);
}

.page-faq .faq-metric dt {
  margin-bottom: 6px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-faq .faq-metric dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 标签与双栏 ---------- */
.page-faq .faq-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
}

.page-faq .faq-tags li {
  padding: 7px 13px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--ink);
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-faq .faq-tags li:hover {
  border-color: var(--lime);
  background: var(--surface-2);
  color: var(--lime);
}

.page-faq .faq-two {
  display: grid;
  gap: 1px;
  margin-top: 22px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-panel {
  padding: 20px 20px 22px;
  background: var(--surface);
}

.page-faq .faq-panel h3 {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
}

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

.page-faq .faq-panel li {
  position: relative;
  padding-left: 17px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 1px;
  background: var(--lime);
}

.page-faq .faq-inline-note {
  margin: 20px 0 0;
  max-width: 70ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 结尾提示 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: clamp(30px, 4.5vw, 52px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  background: linear-gradient(100deg, rgba(200, 255, 77, 0.08), rgba(11, 43, 51, 0.4));
}

.page-faq .faq-cta__text {
  min-width: 0;
}

.page-faq .faq-cta__title {
  margin: 0;
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-cta__sub {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 右侧视觉 ---------- */
.page-faq .faq-visual {
  min-width: 0;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (max-width: 1199.98px) {
  .page-faq .faq-visual img {
    max-height: 300px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--masthead-h) + 24px);
    align-self: start;
    max-height: calc(100vh - var(--masthead-h) - 48px);
    overflow-y: auto;
  }

  .page-faq .faq-visual {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr) var(--faq-side-w);
  }

  .page-faq .faq-visual {
    grid-column: auto;
    position: sticky;
    top: calc(var(--masthead-h) + 24px);
    align-self: start;
  }

  .page-faq .faq-visual img {
    max-height: none;
  }

  .page-faq .faq-tiers {
    grid-template-columns: 1fr 1.1fr 1.24fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 0.01ms !important;
  }
}