.page-faq {
  --faq-rail-w: 224px;
  --faq-gap: clamp(20px, 3vw, 44px);
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(16px, 3vw, 34px) clamp(56px, 8vw, 96px);
}

.page-faq::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(to right, rgba(35, 68, 58, 0.42) 0 1px, transparent 1px 76px),
    repeating-linear-gradient(to bottom, rgba(35, 68, 58, 0.3) 0 1px, transparent 1px 76px);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.4) 58%, transparent 92%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.4) 58%, transparent 92%);
}

.page-faq .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 5.4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.page-faq .faq-hero__accent {
  color: var(--lime);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 48ch;
  color: var(--fog);
  font-size: clamp(0.94rem, 1.4vw, 1.04rem);
  line-height: 1.9;
}

.page-faq .faq-index {
  margin-top: clamp(24px, 3.4vw, 36px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-faq .faq-index__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 12px 14px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--paper);
  font-size: 0.88rem;
  line-height: 1.4;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--fog);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--ink-2);
  color: var(--lime);
}

.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num {
  color: var(--amber);
}

.page-faq .faq-hero__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 46px;
  height: 46px;
  border-top: 2px solid var(--lime);
  border-right: 2px solid var(--lime);
  pointer-events: none;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  filter: saturate(0.76) contrast(1.04);
}

.page-faq .faq-hero__cap {
  display: block;
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--fog);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  margin-top: clamp(34px, 5vw, 66px);
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-rail {
  border-top: 1px solid var(--line);
}

.page-faq .faq-rail__title {
  margin: 0;
  padding: 10px 0 10px 14px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--fog);
}

.page-faq .faq-rail__item {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 0 11px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--fog);
  font-size: 0.86rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-rail__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  bottom: 9px;
  width: 2px;
  background: transparent;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-rail__no {
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--line);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-rail__item:hover,
.page-faq .faq-rail__item:focus-visible {
  color: var(--paper);
  background: var(--ink-2);
}

.page-faq .faq-rail__item:hover::before,
.page-faq .faq-rail__item:focus-visible::before {
  background: var(--lime);
}

.page-faq .faq-rail__item:hover .faq-rail__no,
.page-faq .faq-rail__item:focus-visible .faq-rail__no {
  color: var(--amber);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 108px;
  margin-bottom: clamp(38px, 5.2vw, 62px);
}

.page-faq .faq-group:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  column-gap: 14px;
  row-gap: 10px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--turf);
  margin-bottom: 4px;
}

.page-faq .faq-group__no {
  font-family: var(--font-num);
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  letter-spacing: 0.06em;
  color: var(--amber);
  line-height: 1;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.12rem, 2.6vw, 1.55rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__intro {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--fog);
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ---------- 折叠答案 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
  border-left: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .qa[open] {
  border-left-color: var(--lime);
  background: rgba(14, 42, 34, 0.55);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 0;
  padding: 16px 4px 16px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.65;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

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

.page-faq .qa__q::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-num);
  font-size: 1.1rem;
  line-height: 1.3;
  color: var(--fog);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  content: "−";
  color: var(--lime);
}

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

.page-faq .qa__a {
  padding: 0 16px 20px 26px;
  color: var(--fog);
  font-size: 0.92rem;
  line-height: 1.92;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

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

.page-faq .qa__a strong {
  color: var(--paper);
  font-weight: 600;
}

/* ---------- 步骤列表 ---------- */
.page-faq .steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 40px;
  color: var(--paper);
  line-height: 1.72;
}

.page-faq .steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 28px;
  text-align: center;
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--lime);
  border: 1px solid var(--line);
}

/* ---------- 收藏页说明面板 ---------- */
.page-faq .fav-panel {
  display: grid;
  gap: 18px;
  margin-top: 20px;
  padding: 18px;
  background: var(--ink-2);
  border: 1px solid var(--line);
}

.page-faq .fav-panel__label {
  margin: 0 0 8px;
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-faq .fav-panel__desc {
  margin: 0;
  color: var(--fog);
  font-size: 0.9rem;
  line-height: 1.85;
}

.page-faq .fav-panel__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink);
}

.page-faq .fav-panel__figure img {
  display: block;
  width: 100%;
  height: auto;
  filter: saturate(0.76) contrast(1.04);
}

.page-faq .flow-wrap {
  margin-top: 18px;
  padding: 14px 12px;
  border: 1px solid var(--line);
  background: rgba(31, 92, 74, 0.14);
  overflow-x: auto;
}

.page-faq .faq-flow {
  display: block;
  width: 100%;
  min-width: 300px;
  height: auto;
}

/* ---------- 底部联系条 ---------- */
.page-faq .faq-contact-bar {
  margin-top: clamp(34px, 5vw, 56px);
  display: grid;
  gap: 18px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--amber);
  background: linear-gradient(135deg, rgba(31, 92, 74, 0.32), rgba(7, 28, 22, 0.9));
}

.page-faq .faq-contact-bar__label {
  margin: 0 0 8px;
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-faq .faq-contact-bar__line {
  margin: 0 0 8px;
  color: var(--paper);
  font-size: 0.94rem;
  line-height: 1.8;
  word-break: break-word;
}

.page-faq .faq-contact-bar__line .num {
  color: var(--lime);
  letter-spacing: 0.04em;
}

.page-faq .faq-contact-bar__note {
  margin: 0;
  color: var(--fog);
  font-size: 0.84rem;
  line-height: 1.75;
}

.page-faq .faq-contact-bar .btn {
  justify-self: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .fav-panel {
    grid-template-columns: minmax(0, 1fr) 216px;
    align-items: center;
    padding: 22px;
  }

  .page-faq .faq-contact-bar {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 26px 28px;
  }

  .page-faq .faq-contact-bar .btn {
    justify-self: end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    column-gap: clamp(28px, 4vw, 58px);
  }

  .page-faq .faq-hero__figure {
    margin-top: clamp(0px, 2vw, 26px);
  }

  .page-faq .faq-index {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .qa__a {
    padding-right: 28px;
  }
}
<<<END>>>