.page-faq {
  --faq-gap: clamp(24px, 3.5vw, 64px);
  --faq-sticky: 28px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 6vw, 64px) 0 clamp(28px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -10%;
  top: 24%;
  width: min(50%, 480px);
  height: 2px;
  background: linear-gradient(90deg, rgba(255, 77, 26, 0) 0%, var(--flame) 68%, var(--flame) 100%);
  transform: rotate(-16deg);
  transform-origin: right center;
  pointer-events: none;
}

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

.page-faq .faq-hero h1 {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(2.05rem, 7.6vw, 4.6rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 clamp(16px, 2.6vw, 26px);
  max-width: 16em;
}

.page-faq .faq-hero h1 em {
  font-style: normal;
  color: var(--flame);
  box-shadow: inset 0 -0.24em 0 rgba(255, 77, 26, 0.26);
}

.page-faq .faq-lead {
  color: var(--on-pitch);
  font-size: clamp(0.95rem, 1.6vw, 1.06rem);
  line-height: 1.9;
  max-width: 44ch;
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--line-2);
  color: var(--paper);
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  background: transparent;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-chip-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--mint);
  transition: color 160ms var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--flame);
  color: var(--flame);
  background: rgba(255, 77, 26, 0.08);
}

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

/* ---------- 主体排布 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding-top: clamp(32px, 6vw, 72px);
  padding-bottom: clamp(56px, 9vw, 120px);
}

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

.page-faq .faq-toc-title {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite);
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  counter-reset: none;
}

.page-faq .faq-toc-list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 8px 9px 0;
  color: var(--graphite);
  text-decoration: none;
  font-size: 0.86rem;
  line-height: 1.5;
  border-left: 2px solid transparent;
  padding-left: 12px;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-toc-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--mint);
  flex: none;
}

.page-faq .faq-toc-list a:hover,
.page-faq .faq-toc-list a:focus-visible {
  color: var(--paper);
  border-left-color: var(--flame);
  background: rgba(255, 77, 26, 0.06);
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 84px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(46px, 7vw, 96px);
  padding-top: clamp(30px, 4vw, 56px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--flame);
  margin: 0;
}

.page-faq .faq-group-title {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(1.42rem, 4vw, 2.35rem);
  line-height: 1.2;
  color: var(--paper);
  margin: 0;
  max-width: 20em;
}

.page-faq .faq-group-note {
  color: var(--graphite);
  font-size: 0.94rem;
  line-height: 1.9;
  max-width: 48ch;
  margin: 0;
}

.page-faq .faq-group-note a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 169, 122, 0.4);
}

.page-faq .faq-group-note a:hover,
.page-faq .faq-group-note a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 三步读法 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 clamp(24px, 3.4vw, 36px);
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-step {
  background: var(--ink);
  padding: clamp(18px, 2.6vw, 26px) clamp(16px, 2.4vw, 24px);
  position: relative;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--flame);
  opacity: 0;
  transition: opacity 160ms var(--ease);
}

.page-faq .faq-step:hover::before {
  opacity: 1;
}

.page-faq .faq-step-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--mint);
  margin: 0 0 10px;
}

.page-faq .faq-step-h {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-faq .faq-step-p {
  color: var(--graphite);
  font-size: 0.88rem;
  line-height: 1.85;
  margin: 0;
}

/* ---------- 数据事实条 ---------- */
.page-faq .faq-facts {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: clamp(24px, 3.4vw, 36px);
}

.page-faq .faq-fact {
  background: var(--pitch);
  padding: clamp(18px, 2.6vw, 28px) clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-fact-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 5vw, 2.2rem);
  line-height: 1;
  color: var(--amber);
  margin: 0 0 10px;
}

.page-faq .faq-fact-value span {
  font-size: 0.5em;
  margin-left: 4px;
  color: var(--on-pitch);
  font-weight: 500;
}

.page-faq .faq-fact-label {
  color: var(--on-pitch);
  font-size: 0.84rem;
  line-height: 1.7;
  margin: 0;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(24px, 3.4vw, 38px);
  border: 1px solid var(--line);
  background: var(--pitch);
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--graphite);
  border-top: 1px solid var(--line);
  letter-spacing: 0.03em;
}

.page-faq .faq-figure--wide {
  border-left: 3px solid var(--flame);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: clamp(0.95rem, 1.7vw, 1.04rem);
  font-weight: 600;
  line-height: 1.65;
  transition: color 160ms var(--ease);
}

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

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

.page-faq .faq-q-mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .faq-q-mark::before,
.page-faq .faq-q-mark::after {
  content: "";
  position: absolute;
  background: var(--flame);
}

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

.page-faq .faq-q-mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

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

.page-faq .faq-a {
  padding: 0 4px 22px;
  max-width: 62ch;
  color: var(--graphite);
  font-size: 0.92rem;
  line-height: 1.9;
}

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

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

.page-faq .faq-a a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 169, 122, 0.4);
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-contact-item {
  background: var(--ink);
  padding: clamp(18px, 2.6vw, 26px) clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-contact-key {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite);
  margin: 0 0 10px;
}

.page-faq .faq-contact-val {
  font-size: clamp(1rem, 2.4vw, 1.18rem);
  color: var(--amber);
  margin: 0 0 8px;
  word-break: break-all;
}

.page-faq .faq-contact-note {
  color: var(--graphite);
  font-size: 0.84rem;
  line-height: 1.8;
  margin: 0;
  max-width: 40ch;
}

.page-faq .faq-more {
  color: var(--on-pitch);
  font-size: 0.92rem;
  line-height: 1.9;
  max-width: 56ch;
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--clay);
}

.page-faq .faq-more a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 169, 122, 0.4);
}

.page-faq .faq-more a:hover,
.page-faq .faq-more a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

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

  .page-faq .faq-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-figure {
    max-width: 680px;
  }

  .page-faq .faq-figure--wide {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: clamp(36px, 4.5vw, 84px);
  }

  .page-faq .faq-toc {
    display: block;
    align-self: start;
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-group-title {
    max-width: 18em;
  }

  .page-faq .faq-figure {
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
  }

  .page-faq .faq-figure--wide {
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
  }
}

/* ---------- 动效退化 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-toc-list a,
  .page-faq .faq-q,
  .page-faq .faq-q-mark::after,
  .page-faq .faq-step::before {
    transition: none;
  }
}