.page-faq {
  --faq-line: rgba(251, 255, 253, 0.12);
  --faq-line-strong: rgba(251, 255, 253, 0.26);
  --faq-soft: rgba(18, 56, 43, 0.55);
  display: block;
  padding-bottom: clamp(64px, 10vw, 120px);
}

.page-faq .faq-hero {
  padding: clamp(28px, 5vw, 64px) 0 clamp(32px, 5vw, 56px);
  border-bottom: 2px solid var(--faq-line-strong);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 20px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.2rem, 6.4vw, 4.8rem);
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--line-white);
  margin: 14px 0 0;
  max-width: 20ch;
}

.page-faq .faq-hero .lead {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.85;
  color: var(--moss);
  margin: 0;
  max-width: 52ch;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-stat {
  border: 2px solid var(--faq-line-strong);
  background: var(--turf);
  padding: 11px 13px;
}

.page-faq .faq-stat__v {
  display: block;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1;
  color: var(--cyan);
  text-shadow: var(--glow);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-stat__l {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  margin-top: clamp(28px, 5vw, 56px);
}

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

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  border: 2px solid var(--faq-line-strong);
  background: var(--ink-deep);
  padding: 16px 14px;
}

.page-faq .faq-index__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--moss-dark);
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--faq-line);
}

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

.page-faq .faq-index__item {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 4px 8px;
  padding: 8px 10px;
  border: 1px solid var(--faq-line);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.3;
  color: var(--moss);
  white-space: nowrap;
  transition: border-color var(--ease), color var(--ease), background var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--cyan);
  color: var(--line-white);
  background: var(--turf);
}

.page-faq .faq-index__num {
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.page-faq .faq-index__len {
  grid-column: 1 / -1;
  display: block;
  height: 3px;
  width: calc(var(--t, 3) * 12px);
  max-width: 100%;
  background: var(--cyan-deep);
  opacity: 0.6;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(38px, 6vw, 68px);
  scroll-margin-top: 88px;
}

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

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 18px;
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--faq-line-strong);
}

.page-faq .faq-group__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height: 0.82;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--cyan-deep);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__title {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.3rem, 3vw, 1.95rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--line-white);
  margin: 0;
}

.page-faq .faq-group__desc {
  grid-column: 2;
  grid-row: 2;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  color: var(--moss);
  margin: 0;
  max-width: 58ch;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 6px;
  border: 2px solid var(--faq-line-strong);
  background: var(--ink-deep);
  box-shadow: 6px 6px 0 var(--ink-deep);
  overflow: hidden;
  transition: box-shadow var(--ease), border-color var(--ease);
}

.page-faq .faq-figure:hover {
  border-color: var(--cyan-deep);
  box-shadow: 10px 10px 0 var(--ink-deep);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.06);
}

.page-faq .faq-figure figcaption {
  font-family: var(--font-mono);
  font-style: italic;
  font-size: 12px;
  line-height: 1.7;
  color: var(--moss);
  padding: 10px 14px;
  border-top: 1px solid var(--faq-line);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-q {
  border-bottom: 1px solid var(--faq-line);
  scroll-margin-top: 88px;
}

.page-faq .faq-q__sum {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px 16px;
  align-items: baseline;
  padding: 18px 6px;
  transition: background var(--ease);
}

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

.page-faq .faq-q__sum::marker {
  content: "";
}

.page-faq .faq-q__sum:hover,
.page-faq .faq-q__sum:focus-visible {
  background: var(--faq-soft);
}

.page-faq .faq-q__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-q[open] .faq-q__num {
  color: var(--amber);
}

.page-faq .faq-q__text {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1rem, 1.7vw, 1.16rem);
  line-height: 1.45;
  color: var(--line-white);
}

.page-faq .faq-q__sign {
  position: relative;
  width: 16px;
  height: 16px;
  align-self: center;
  flex: none;
}

.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform var(--ease), opacity var(--ease), background var(--ease);
}

.page-faq .faq-q__sign::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-q__sign::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .faq-q[open] .faq-q__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-q[open] .faq-q__sign::before {
  background: var(--amber);
}

.page-faq .faq-q__body {
  padding: 0 6px 26px 18px;
  border-left: 3px solid transparent;
  transition: border-color var(--ease);
}

.page-faq .faq-q[open] .faq-q__body {
  border-left-color: var(--amber);
}

.page-faq .faq-q__verdict {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper);
  margin: 0 0 14px;
}

.page-faq .faq-q__verdict-k {
  display: inline-block;
  margin-right: 10px;
  padding: 1px 7px;
  border: 1px solid var(--amber);
  color: var(--amber);
  font-size: 11px;
  letter-spacing: 0.08em;
  vertical-align: 2px;
}

.page-faq .faq-q__para {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--moss);
  margin: 12px 0 0;
}

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--moss);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  text-align: right;
  color: var(--cyan-deep);
  border-right: 1px solid var(--faq-line);
  padding-right: 8px;
}

/* ---------- 字段表 ---------- */
.page-faq .faq-fields {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 13px;
  margin: 4px 0 0;
  table-layout: auto;
}

.page-faq .faq-fields th {
  text-align: left;
  font-weight: 700;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--moss-dark);
  padding: 8px 12px 8px 0;
  border-bottom: 1px solid var(--faq-line-strong);
}

.page-faq .faq-fields td {
  padding: 11px 14px 11px 0;
  border-bottom: 1px solid var(--faq-line);
  color: var(--moss);
  line-height: 1.75;
  vertical-align: top;
  transition: background var(--ease);
}

.page-faq .faq-fields .faq-fields__k {
  color: var(--amber);
  font-weight: 700;
  white-space: nowrap;
}

.page-faq .faq-fields tbody tr:hover td {
  background: var(--turf);
}

/* ---------- 空结果提示 ---------- */
.page-faq .faq-alert {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px 12px;
  align-items: start;
  margin: 16px 0 0;
  padding: 11px 14px;
  border: 2px solid var(--pulse);
  background: rgba(255, 61, 85, 0.07);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--paper);
  animation: faq-breathe 1.6s ease-in-out infinite;
}

.page-faq .faq-alert__k {
  color: var(--pulse);
  font-weight: 700;
  letter-spacing: 0.06em;
}

@keyframes faq-breathe {
  0%, 100% { box-shadow: 0 0 8px rgba(255, 61, 85, 0.18); }
  50% { box-shadow: 0 0 24px rgba(255, 61, 85, 0.48); }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-alert {
    animation: none;
    box-shadow: var(--glow-pulse);
  }
}

/* ---------- 结尾 ---------- */
.page-faq .faq-outro {
  margin-top: clamp(48px, 8vw, 88px);
  border: 2px solid var(--faq-line-strong);
  background: var(--paper);
  color: var(--ink);
  padding: clamp(24px, 4vw, 40px);
  box-shadow: 8px 8px 0 var(--ink-deep);
}

.page-faq .faq-outro__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.2vw, 2.1rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  color: var(--ink);
}

.page-faq .faq-outro__text {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.85;
  color: #2E3B33;
  margin: 0 0 20px;
  max-width: 56ch;
}

.page-faq .faq-outro .btn {
  margin-top: 2px;
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: end;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
    padding: 20px 16px;
    max-height: calc(100vh - 48px);
    overflow-y: auto;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-index__item {
    flex: none;
    width: 100%;
  }

  .page-faq .faq-index__link {
    grid-template-columns: 38px minmax(0, 1fr) 44px;
    gap: 8px;
    border: none;
    border-bottom: 1px solid var(--faq-line);
    padding: 9px 4px;
  }

  .page-faq .faq-index__num {
    grid-column: 1;
  }

  .page-faq .faq-index__name {
    grid-column: 2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .page-faq .faq-index__len {
    grid-column: 3;
    grid-row: 1;
    width: calc(var(--t, 3) * 10px);
    max-width: 100%;
    margin-left: auto;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-q__sum {
    padding: 22px 6px;
    gap: 12px 22px;
  }

  .page-faq .faq-q__body {
    padding-left: 24px;
  }
}

.page-faq {
  --t: 1rem;
}