.page-faq {
  --faq-ink: #12231D;
  --faq-muted: #5C6E68;
  --faq-body: #3B4A44;
  --faq-line-soft: #D9D4C5;
  --faq-paper: #F2F0E9;
  --faq-chip: #EAE6D9;
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: clamp(32px, 6vw, 80px);
}

.page-faq .breadcrumb {
  padding: 14px 0;
  font-size: 13px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(4px, 1.5vw, 16px);
}

.page-faq .faq-hero__frame {
  position: relative;
  border: 1px solid var(--line);
  padding: clamp(26px, 4.5vw, 52px) clamp(16px, 3vw, 40px) clamp(20px, 3vw, 34px);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0) 46%);
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 16px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__note {
  display: none;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5.6vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.12;
  margin: 12px 0 16px;
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.85;
  color: var(--slate-300);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .fact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .fact__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--slate-500);
}

.page-faq .fact__v {
  font-size: 15px;
  color: var(--paper);
}

.page-faq .fact__v .num {
  font-size: 1.25em;
}

/* ---------- 主题指示条 ---------- */
.page-faq .faq-topics {
  margin-top: clamp(18px, 3vw, 36px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-topics__inner {
  display: flex;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-topics__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 18px;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--slate-300);
  text-decoration: none;
  border-right: 1px solid var(--line);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-topics__link:first-child {
  border-left: 1px solid var(--line);
}

.page-faq .faq-topics__link:hover,
.page-faq .faq-topics__link:focus-visible {
  color: var(--paper);
  background: var(--ink-700);
  outline: none;
}

.page-faq .faq-topics__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--signal);
}

/* ---------- 图形 ---------- */
.page-faq .faq-figure {
  margin: clamp(20px, 3.5vw, 40px) 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: var(--ink-800);
  object-fit: cover;
}

.page-faq .faq-figure .figure__caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--slate-500);
}

.page-faq .faq-figure--inline {
  margin: 0 0 22px;
}

/* ---------- 主题区块 ---------- */
.page-faq .faq-topic {
  margin-top: clamp(26px, 4.5vw, 60px);
  padding-top: clamp(22px, 3.5vw, 44px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-topic__grid {
  display: grid;
  gap: clamp(16px, 3vw, 28px);
}

.page-faq .faq-topic__side h2 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.28;
  margin: 10px 0 8px;
}

.page-faq .faq-topic__sub {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate-500);
}

.page-faq .faq-index {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

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

.page-faq .faq-index li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-index__link {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--slate-300);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  outline: none;
}

.page-faq .faq-index__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--signal);
  padding-top: 3px;
}

/* ---------- 纸面答案区 ---------- */
.page-faq .faq-topic__main {
  background: var(--faq-paper);
  color: var(--faq-ink);
  border: 1px solid var(--faq-line-soft);
  padding: clamp(16px, 3vw, 32px);
  box-shadow: 0 20px 44px -34px rgba(0, 0, 0, 0.9);
}

.page-faq .faq-topic__main .num {
  color: var(--signal-deep);
  font-family: var(--font-mono);
  font-weight: 600;
}

.page-faq .faq-fee {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.page-faq .faq-fee li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--faq-line-soft);
}

.page-faq .faq-fee li:first-child {
  border-top: 1px dashed var(--faq-line-soft);
}

.page-faq .faq-fee__k {
  font-size: 14px;
  color: var(--faq-muted);
}

.page-faq .faq-fee__v {
  font-size: 14px;
  color: var(--faq-ink);
  white-space: nowrap;
}

.page-faq .faq-fee__v .num {
  font-size: 1.35em;
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa {
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .qa:first-of-type {
  border-top: 0;
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.55;
  color: var(--faq-ink);
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--signal-deep);
  outline-offset: 2px;
}

.page-faq .qa__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--signal-deep);
}

.page-faq .qa__t {
  flex: 1 1 auto;
}

.page-faq .qa__icon {
  flex: 0 0 auto;
  position: relative;
  width: 12px;
  height: 12px;
  align-self: center;
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  background: var(--signal-deep);
  transition: transform var(--dur) var(--ease);
}

.page-faq .qa__icon::before {
  top: 5px;
  left: 0;
  right: 0;
  height: 1.5px;
}

.page-faq .qa__icon::after {
  top: 0;
  bottom: 0;
  left: 5px;
  width: 1.5px;
}

.page-faq .qa[open] .qa__icon::after {
  transform: scaleY(0);
}

.page-faq .qa__a {
  padding: 0 0 16px;
}

.page-faq .qa__a p {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body);
}

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

.page-faq .qa__a a {
  color: var(--signal-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa:target .qa__q {
  color: var(--signal-deep);
}

/* ---------- 周期区间条 ---------- */
.page-faq .cycle {
  display: grid;
  gap: 0;
  margin: 0 0 22px;
}

.page-faq .cycle__row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 6px 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .cycle__row:first-child {
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .cycle__k {
  font-size: 13.5px;
  color: var(--faq-muted);
}

.page-faq .cycle__v {
  font-size: 13.5px;
  color: var(--faq-ink);
  white-space: nowrap;
}

.page-faq .cycle__bar {
  grid-column: 1 / -1;
  position: relative;
  height: 6px;
  background: #E2DDCF;
  overflow: hidden;
}

.page-faq .cycle__fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  background: linear-gradient(90deg, var(--signal) 0%, var(--signal-deep) 100%);
}

.page-faq .cycle__fill--a {
  width: 34%;
}

.page-faq .cycle__fill--b {
  width: 58%;
}

.page-faq .cycle__fill--c {
  width: 82%;
}

/* ---------- 适配范围标签 ---------- */
.page-faq .adapt {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
}

.page-faq .adapt li {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  padding: 7px 9px;
  border: 1px solid var(--faq-line-soft);
  background: var(--faq-chip);
  color: var(--faq-muted);
}

/* ---------- 咨询准备清单 ---------- */
.page-faq .prep {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.page-faq .prep__item {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 2px 10px;
  padding: 12px 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .prep__item:last-child {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .prep__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--signal-deep);
  padding-top: 3px;
}

.page-faq .prep__k {
  font-size: 15px;
  font-weight: 700;
  color: var(--faq-ink);
}

.page-faq .prep__d {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-body);
}

/* ---------- 复制模板 ---------- */
.page-faq .faq-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-copy__hint {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-muted);
}

.page-faq .faq-copy .copy-btn {
  color: var(--faq-ink);
  border-color: var(--faq-line-soft);
}

/* ---------- 结尾行动区 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(28px, 5vw, 64px);
  padding-top: clamp(24px, 4vw, 46px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 20px;
}

.page-faq .faq-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 10px 0 10px;
}

.page-faq .faq-cta__lead {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate-300);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-hero__facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0 clamp(12px, 2vw, 28px);
    border-bottom: 1px solid var(--line);
  }

  .page-faq .fact {
    flex-direction: column;
    align-items: flex-start;
    border-bottom: 0;
  }

  .page-faq .cycle__row {
    grid-template-columns: 112px 1fr auto;
  }

  .page-faq .cycle__bar {
    grid-column: 2;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__frame {
    padding-right: clamp(64px, 6vw, 96px);
  }

  .page-faq .faq-hero__note {
    display: block;
    position: absolute;
    top: 9px;
    right: 0;
    padding: 22px 14px;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.34em;
    color: var(--slate-500);
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-topic__grid {
    grid-template-columns: minmax(200px, 3fr) minmax(0, 8fr);
    gap: clamp(28px, 4vw, 64px);
    align-items: start;
  }

  .page-faq .faq-topic__side {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 32px;
  }
}

@media (min-width: 1200px) {
  .page-faq .qa__q {
    font-size: 16.5px;
    padding: 18px 0;
  }

  .page-faq .qa__a p {
    font-size: 15.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__icon::before,
  .page-faq .qa__icon::after,
  .page-faq .faq-topics__link,
  .page-faq .faq-index__link {
    transition: none;
  }
}