.page-faq {
  --faq-index-w: 206px;
  --faq-col-gap: clamp(26px, 4vw, 62px);
  --faq-note-pad: clamp(15px, 2vw, 22px);
}

/* ---------- 首屏声明 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(22px, 3.5vw, 44px);
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-sans);
  font-size: clamp(30px, 6.4vw, 60px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 16em;
}

.page-faq .faq-hero__lead {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--paper-72);
}

.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 14px clamp(16px, 3vw, 40px);
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-quick li {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding-left: 13px;
  border-left: 1px solid var(--rule-strong);
  font-size: 13px;
  color: var(--paper-56);
  letter-spacing: 0.02em;
}

.page-faq .faq-quick .num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.2vw, 36px);
  font-weight: 800;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-quick li:nth-child(2) .num { color: var(--ice); }
.page-faq .faq-quick li:nth-child(3) .num { color: var(--amber); }
.page-faq .faq-quick li:nth-child(4) .num { color: var(--paper); }

/* ---------- 索引 + 问答双栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-col-gap);
  padding-block: clamp(26px, 4vw, 58px) clamp(40px, 6vw, 90px);
}

.page-faq .faq-index {
  border-top: 2px solid var(--rule-strong);
  padding-top: 14px;
}

.page-faq .faq-index__label {
  display: block;
  color: var(--paper-56);
  letter-spacing: 0.2em;
}

.page-faq .faq-index__list {
  display: grid;
  gap: 2px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--paper-72);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  border-left-color: var(--lime);
  background-color: rgba(200, 242, 78, 0.07);
}

.page-faq .faq-index__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
}

.page-faq .faq-index__note {
  margin: 18px 0 0;
  padding-top: 13px;
  border-top: 1px dashed var(--rule);
  font-size: 13px;
  line-height: 1.75;
  color: var(--paper-38);
}

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

/* ---------- 分类区块 ---------- */
.page-faq .faq-block {
  padding-block: 0;
  scroll-margin-top: calc(var(--header-lower-h) + 24px);
}

.page-faq .faq-block + .faq-block { margin-top: clamp(46px, 7vw, 96px); }

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

.page-faq .faq-figure--side { margin: 18px 0 0; }

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

/* ---------- 问答条目 ---------- */
.page-faq .faq-notes {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .faq-note {
  border: 1px solid var(--rule);
  border-left: 3px solid var(--rock);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--deep-veil), rgba(10, 26, 34, 0.62));
  box-shadow: 6px 6px 0 rgba(43, 52, 56, 0.34);
  transition: border-color 0.24s var(--ease), box-shadow 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-faq .faq-note[data-open="true"] {
  border-left-color: var(--lime);
  transform: translateY(-2px);
  box-shadow: 8px 8px 0 rgba(200, 242, 78, 0.13);
}

.page-faq .faq-note__head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-note__btn {
  display: flex;
  align-items: baseline;
  gap: 13px;
  width: 100%;
  padding: var(--faq-note-pad);
  border: 0;
  background: none;
  font-family: var(--font-sans);
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  text-align: left;
  color: var(--paper);
  cursor: pointer;
}

.page-faq .faq-note__btn:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

.page-faq .faq-note__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--paper-38);
  transition: color 0.24s var(--ease);
}

.page-faq .faq-note[data-open="true"] .faq-note__num { color: var(--lime); }

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

.page-faq .faq-note__sign {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-left: auto;
  align-self: center;
}

.page-faq .faq-note__sign::before,
.page-faq .faq-note__sign::after {
  content: "";
  position: absolute;
  background: var(--paper-56);
  transition: transform 0.26s var(--ease), opacity 0.26s var(--ease), background-color 0.26s var(--ease);
}

.page-faq .faq-note__sign::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .faq-note__sign::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-faq .faq-note[data-open="true"] .faq-note__sign::before { background: var(--lime); }
.page-faq .faq-note[data-open="true"] .faq-note__sign::after { transform: scaleY(0); opacity: 0; }

.page-faq .faq-note__inner {
  padding: 0 var(--faq-note-pad) clamp(18px, 2.2vw, 24px);
  max-width: 32em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-72);
}

.page-faq .faq-note__inner p { margin: 0; }
.page-faq .faq-note__inner p + p { margin-top: 10px; }

.page-faq .faq-link {
  color: var(--ice);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ---------- 排序层级条 ---------- */
.page-faq .faq-chain {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chain__step {
  display: grid;
  gap: 5px;
  padding: 12px 14px;
  border: 1px solid var(--rule);
  border-top: 2px solid var(--lime);
  background: rgba(10, 26, 34, 0.55);
}

.page-faq .faq-chain__step:nth-child(2) { border-top-color: var(--amber); }
.page-faq .faq-chain__step:nth-child(3) { border-top-color: var(--ice); }

.page-faq .faq-chain__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--paper-38);
}

.page-faq .faq-chain__name {
  font-size: 17px;
  font-weight: 800;
  color: var(--paper);
  line-height: 1.3;
}

.page-faq .faq-chain__note {
  font-size: 12px;
  color: var(--paper-56);
  line-height: 1.6;
}

/* ---------- 时效面板 ---------- */
.page-faq .faq-tempo {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-tempo__list {
  display: grid;
  gap: 16px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tempo__item {
  display: grid;
  gap: 3px;
  padding-left: 13px;
  border-left: 2px solid var(--rule-strong);
}

.page-faq .faq-tempo__item:nth-child(1) { border-left-color: var(--lime); }
.page-faq .faq-tempo__item:nth-child(2) { border-left-color: var(--amber); }
.page-faq .faq-tempo__item:nth-child(3) { border-left-color: var(--ice); }
.page-faq .faq-tempo__item:nth-child(4) { border-left-color: var(--paper-38); }

.page-faq .faq-tempo__value {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 900;
  line-height: 1;
  color: var(--paper);
  letter-spacing: -0.02em;
}

.page-faq .faq-tempo__item:nth-child(1) .faq-tempo__value { color: var(--lime); }
.page-faq .faq-tempo__item:nth-child(2) .faq-tempo__value { color: var(--amber); }
.page-faq .faq-tempo__item:nth-child(3) .faq-tempo__value { color: var(--ice); }

.page-faq .faq-tempo__unit {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--paper-56);
}

.page-faq .faq-tempo__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper-72);
}

/* ---------- 窄屏：索引转为横向标签带 ---------- */
@media (max-width: 959px) {
  .page-faq .faq-index { border-top-width: 1px; }

  .page-faq .faq-index__list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .page-faq .faq-index__link {
    border-left: 0;
    border-bottom: 2px solid transparent;
    background-color: rgba(241, 235, 224, 0.04);
    padding: 7px 12px;
    white-space: nowrap;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: transparent;
    border-bottom-color: var(--lime);
  }

  .page-faq .faq-note__inner { max-width: none; }
}

/* ---------- 桌面：索引常驻 + 层级条横排 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index__inner {
    position: sticky;
    top: calc(var(--header-lower-h) + 26px);
  }

  .page-faq .faq-notes { gap: 16px; }

  .page-faq .faq-note__btn { padding-inline: clamp(18px, 2vw, 24px); }

  .page-faq .faq-note__inner {
    padding-left: clamp(18px, 2vw, 24px);
    padding-right: clamp(28px, 5vw, 76px);
  }
}

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

  .page-faq .faq-tempo__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-body { max-width: 940px; }
}