.page-faq {
  --faq-line: rgba(92, 107, 103, 0.26);
  --faq-line-soft: rgba(92, 107, 103, 0.16);
  --faq-line-strong: rgba(92, 107, 103, 0.48);
  background: var(--bg);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: clamp(26px, 4vw, 48px);
  padding-bottom: clamp(34px, 5vw, 64px);
  overflow: hidden;
  border-bottom: var(--hair);
  background:
    radial-gradient(circle at 8% 0%, rgba(47, 227, 154, 0.09), transparent 46%),
    radial-gradient(circle at 92% 100%, rgba(53, 224, 208, 0.06), transparent 48%),
    var(--bg);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(92, 107, 103, 0.13) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(92, 107, 103, 0.13) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
}

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

.page-faq .faq-hero__frame {
  margin-top: clamp(20px, 3vw, 34px);
  padding: clamp(20px, 3vw, 36px) clamp(18px, 3vw, 40px) clamp(22px, 3vw, 40px);
  border: var(--hair);
  border-left: 2px solid rgba(47, 227, 154, 0.55);
  background: linear-gradient(140deg, rgba(14, 42, 34, 0.72), rgba(7, 21, 18, 0.42));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-faq .faq-hero__title {
  font-family: var(--font-head);
  font-weight: 200;
  font-size: clamp(34px, 6.6vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.012em;
  margin: 16px 0 20px;
  color: var(--ink);
}

.page-faq .faq-hero__lede {
  max-width: 62ch;
  color: var(--silver);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding-top: 20px;
  border-top: var(--hair-soft);
}

.page-faq .faq-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-hero__fact dd {
  margin: 0;
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__unit {
  font-family: var(--font-body);
  font-size: 0.4em;
  font-weight: 500;
  color: var(--silver);
  margin-left: 4px;
  letter-spacing: 0;
}

/* ---------- 通用小标题 ---------- */
.page-faq .faq-head {
  max-width: 68ch;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-faq .faq-head .h2,
.page-faq .faq-topic__head .h2,
.page-faq .faq-index__title,
.page-faq .faq-escalate .h2 {
  margin: 8px 0 12px;
}

/* ---------- 自查三件事 ---------- */
.page-faq .faq-selfcheck {
  padding-top: clamp(40px, 6vw, 76px);
  padding-bottom: clamp(40px, 6vw, 76px);
  background: var(--bg);
}

.page-faq .selfcheck__flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .selfcheck__node {
  position: relative;
  padding: 26px 22px 28px;
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--faq-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  transition: background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .selfcheck__node:hover {
  background: var(--panel-2);
  box-shadow: inset 0 0 0 1px rgba(47, 227, 154, 0.5);
}

.page-faq .selfcheck__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--rule);
  margin-bottom: 14px;
}

.page-faq .selfcheck__node:hover .selfcheck__num {
  color: var(--accent);
}

.page-faq .selfcheck__node .h3 {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.45;
}

.page-faq .selfcheck__node p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .selfcheck__meta {
  margin-top: 14px !important;
  padding-top: 12px;
  border-top: var(--hair-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--rule) !important;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin-top: clamp(28px, 4vw, 46px);
  margin-bottom: 0;
}

.page-faq .faq-figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--faq-line);
}

.page-faq .faq-figure .media__caption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--rule);
  max-width: 64ch;
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-index {
  padding-top: clamp(34px, 5vw, 58px);
  padding-bottom: clamp(34px, 5vw, 58px);
  background: var(--panel);
  border-top: var(--hair);
  border-bottom: var(--hair);
}

.page-faq .faq-index__title {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: -0.01em;
  margin: 0 0 22px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--hair-soft);
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 46px 1fr;
  grid-template-rows: auto auto;
  gap: 2px 14px;
  align-items: baseline;
  padding: 15px 10px 15px 0;
  border-bottom: var(--hair-soft);
  text-decoration: none;
  color: var(--ink);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--accent);
  padding-left: 4px;
}

.page-faq .faq-index__no {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rule);
}

.page-faq .faq-index__link:hover .faq-index__no {
  color: var(--accent);
}

.page-faq .faq-index__name {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
}

.page-faq .faq-index__sub {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--rule);
}

/* ---------- 主题区块 ---------- */
.page-faq .faq-topic {
  padding-top: clamp(40px, 6vw, 72px);
  padding-bottom: clamp(40px, 6vw, 72px);
  border-bottom: var(--hair-soft);
}

.page-faq .faq-topic__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-faq .faq-topic__num {
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(38px, 5.4vw, 64px);
  line-height: 0.88;
  letter-spacing: -0.01em;
  color: transparent;
  -webkit-text-stroke: 1px var(--rule);
  font-variant-numeric: tabular-nums;
  transition: -webkit-text-stroke-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-topic__head:hover .faq-topic__num {
  -webkit-text-stroke-color: var(--accent);
  color: rgba(47, 227, 154, 0.12);
}

.page-faq .faq-topic__head .lede {
  margin: 0;
  max-width: 58ch;
}

/* ---------- 时序线 ---------- */
.page-faq .timeline {
  list-style: none;
  margin: 0 0 clamp(24px, 3vw, 34px);
  padding: 0 0 0 20px;
  display: grid;
  gap: 18px;
  border-left: 1px solid var(--faq-line);
}

.page-faq .timeline__step {
  display: grid;
  gap: 2px;
  position: relative;
}

.page-faq .timeline__step::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 5px;
  width: 9px;
  height: 9px;
  background: var(--bg);
  border: 1px solid var(--accent);
  transform: rotate(45deg);
}

.page-faq .timeline__key {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
}

.page-faq .timeline__val {
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.page-faq .timeline__unit {
  font-family: var(--font-body);
  font-size: 0.42em;
  font-weight: 500;
  color: var(--silver);
  margin-left: 3px;
}

.page-faq .timeline__note {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--rule);
}

/* ---------- 问答 ---------- */
.page-faq .qa-list {
  border-top: var(--hair-soft);
}

.page-faq .qa {
  border-bottom: var(--hair-soft);
}

.page-faq .qa summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 40px 1fr 24px;
  gap: 10px;
  align-items: start;
  padding: 17px 0;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .qa summary::marker {
  content: "";
}

.page-faq .qa summary:hover {
  color: var(--accent);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--warn);
  outline-offset: 3px;
}

.page-faq .qa__mark {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--rule);
  padding-top: 5px;
  transition: color var(--dur) var(--ease);
}

.page-faq .qa summary:hover .qa__mark {
  color: var(--accent);
}

.page-faq .qa__q {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
}

.page-faq .qa__hint {
  justify-self: end;
  margin-top: 2px;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border: var(--hair);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  color: var(--rule);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa__hint::before {
  content: "+";
}

.page-faq .qa[open] .qa__hint {
  color: var(--warn);
  border-color: rgba(255, 210, 74, 0.5);
}

.page-faq .qa[open] .qa__hint::before {
  content: "–";
}

.page-faq .qa__body {
  padding: 0 0 22px;
  display: grid;
  gap: 12px;
  max-width: 74ch;
}

.page-faq .qa__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}

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

.page-faq .steps li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent);
  padding-top: 3px;
}

.page-faq .qa__body .link,
.page-faq .escalate__refs .link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa__body .link:hover,
.page-faq .escalate__refs .link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- 升级区块 ---------- */
.page-faq .faq-escalate {
  padding-top: clamp(44px, 6vw, 80px);
  padding-bottom: clamp(44px, 6vw, 80px);
  background:
    linear-gradient(160deg, rgba(18, 58, 44, 0.55), rgba(7, 21, 18, 0.9)),
    var(--deep);
  border-top: var(--hair);
}

.page-faq .escalate__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-faq .escalate__note {
  margin: 18px 0 0;
  padding: 14px 16px;
  border-left: 2px solid var(--warn);
  background: rgba(255, 210, 74, 0.05);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--silver);
  max-width: 60ch;
}

.page-faq .escalate__checklist {
  padding: 22px 20px 24px;
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--faq-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-faq .escalate__checklist .h3 {
  margin: 0 0 16px;
  font-size: 16px;
}

.page-faq .checklist {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--hair-soft);
}

.page-faq .checklist li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  padding: 11px 0;
  border-bottom: var(--hair-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

.page-faq .checklist__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--rule);
  padding-top: 3px;
}

.page-faq .escalate__cta {
  width: 100%;
}

.page-faq .escalate__refs .h3 {
  margin: 0 0 14px;
  font-size: 16px;
}

.page-faq .refs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--hair-soft);
}

.page-faq .refs li {
  display: grid;
  gap: 3px;
  padding: 13px 0;
  border-bottom: var(--hair-soft);
}

.page-faq .refs span {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--rule);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-faq .faq-index__link {
    padding-right: 22px;
  }
}

@media (min-width: 900px) {
  .page-faq .selfcheck__flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-topic__head {
    grid-template-columns: 118px 1fr;
    gap: 32px;
    align-items: start;
  }

  .page-faq .timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    padding: 24px 0 0;
    border-left: 0;
    border-top: 1px solid var(--faq-line);
  }

  .page-faq .timeline__step {
    padding-right: 24px;
  }

  .page-faq .timeline__step::before {
    left: 0;
    top: -30px;
  }

  .page-faq .qa__body {
    padding-left: 50px;
  }

  .page-faq .escalate__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 34px 40px;
    align-items: start;
  }

  .page-faq .escalate__refs {
    grid-column: 1 / -1;
    padding-top: 26px;
    border-top: var(--hair-soft);
  }

  .page-faq .refs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-index__link {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    gap: 4px;
    padding: 20px 18px 20px 0;
  }

  .page-faq .faq-index__no {
    grid-row: auto;
  }

  .page-faq .escalate__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr) minmax(0, 0.9fr);
  }

  .page-faq .escalate__refs {
    grid-column: auto;
    padding-top: 0;
    border-top: 0;
    padding-left: 28px;
    border-left: var(--hair-soft);
  }

  .page-faq .refs {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .selfcheck__node,
  .page-faq .selfcheck__num,
  .page-faq .qa summary,
  .page-faq .qa__mark,
  .page-faq .qa__hint,
  .page-faq .faq-index__link,
  .page-faq .faq-index__no,
  .page-faq .faq-topic__num,
  .page-faq .qa__body .link,
  .page-faq .escalate__refs .link {
    transition: none;
  }
}