.page-faq {
  background: var(--paper-000);
  color: var(--ink-700);
  font-family: var(--font-sans);
  overflow-wrap: break-word;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background: var(--paper-000);
  padding-block: clamp(24px, 4.2vw, 52px) clamp(30px, 5vw, 58px);
}

.page-faq .faq-hero__inner {
  max-width: 46rem;
}

.page-faq .faq-hero h1 {
  margin: 0.55rem 0 0;
  font-size: clamp(1.8rem, 4.4vw, 2.95rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.012em;
  color: var(--ink-900);
}

.page-faq .faq-hero__lead {
  margin: 1.05rem 0 0;
  max-width: 36em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-500);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.9rem;
  margin: 1.7rem 0 0;
  padding: 1rem 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
  color: var(--ink-500);
}

.page-faq .faq-hero__num {
  margin-right: 0.4rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--blue);
}

/* ---------- 三条速答 ---------- */
.page-faq .faq-quick {
  background: var(--paper-100);
  padding-block: clamp(30px, 4.6vw, 56px);
}

.page-faq .faq-quick__grid {
  display: grid;
  gap: 1px;
  margin-top: 1.9rem;
  background: var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-quick__cell {
  background: var(--glass);
  padding: 1.4rem 1.25rem 1.55rem;
}

.page-faq .faq-quick__cell .step-num {
  display: inline-block;
  margin-bottom: 0.7rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-quick__q {
  margin: 0;
  font-size: 1.04rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink-900);
}

.page-faq .faq-quick__a {
  margin: 0.6rem 0 0;
  font-size: 0.91rem;
  line-height: 1.8;
  color: var(--ink-500);
}

/* ---------- 主体问答 ---------- */
.page-faq .faq-body {
  background: var(--paper-000);
  padding-block: clamp(32px, 5vw, 62px) clamp(30px, 4.6vw, 56px);
}

.page-faq .faq-layout {
  display: grid;
  gap: 2.2rem;
  margin-top: 2rem;
}

.page-faq .faq-index__sticky {
  padding: 1.15rem 1.05rem 1.25rem;
  background: var(--paper-100);
  border-radius: var(--radius);
}

.page-faq .faq-index__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-500);
}

.page-faq .faq-index__figure {
  max-width: 176px;
  margin: 0 0 1rem;
  border-radius: 10px;
  overflow: hidden;
  background: var(--paper-000);
}

.page-faq .faq-index__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(122px, 1fr));
  gap: 3px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.6rem 0.65rem;
  border-radius: 8px;
  font-size: 0.89rem;
  color: var(--ink-700);
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--blue-soft);
  color: var(--blue-deep);
}

.page-faq .faq-index__key {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--teal-deep);
}

/* 分组 */
.page-faq .faq-group {
  scroll-margin-top: 18px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 2.7rem;
}

.page-faq .faq-group__head {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin: 0 0 1rem;
  padding: 0.8rem 0 0.75rem;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), var(--teal));
}

.page-faq .faq-group__key {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--blue);
}

.page-faq .faq-group__head h3 {
  margin: 0;
  font-size: clamp(1.16rem, 2.3vw, 1.55rem);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.005em;
  color: var(--ink-900);
}

/* 问题条目 */
.page-faq .faq-list {
  display: grid;
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.95rem 0.2rem;
  list-style: none;
  cursor: pointer;
  font-size: clamp(0.97rem, 1.9vw, 1.07rem);
  font-weight: 600;
  line-height: 1.62;
  color: var(--ink-700);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--blue-deep);
}

.page-faq .faq-item__num {
  flex: none;
  min-width: 1.6rem;
  padding-top: 0.3rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__q::after {
  content: "＋";
  flex: none;
  padding-left: 0.9rem;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink-500);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item[open] > .faq-item__q {
  color: var(--ink-900);
}

.page-faq .faq-item[open] > .faq-item__q::after {
  content: "－";
  color: var(--blue);
}

.page-faq .faq-item__a {
  position: relative;
  padding: 0.15rem 0.3rem 1.15rem 2.4rem;
}

.page-faq .faq-item__a::before {
  content: "";
  position: absolute;
  left: 0.74rem;
  top: 0.2rem;
  bottom: 1.2rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--teal), rgba(0, 179, 155, 0));
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 34em;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--ink-700);
}

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

/* 图 */
.page-faq .faq-figure {
  margin: 1.6rem 0 0.3rem;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  background: var(--paper-100);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-figure__cap {
  margin: 0.7rem 0 0;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  line-height: 1.7;
  color: var(--ink-500);
}

/* ---------- 底部窄条 ---------- */
.page-faq .faq-contact {
  background: var(--paper-100);
  padding-block: clamp(30px, 4.4vw, 54px);
}

.page-faq .faq-contact__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.8rem;
  padding: 1.25rem 1.35rem;
  border-left: 4px solid var(--orange);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--glass);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-contact__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ink-900);
}

.page-faq .faq-contact__meta {
  margin: 0.45rem 0 0;
  max-width: 40em;
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--ink-500);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 3.4rem;
    align-items: start;
  }

  .page-faq .faq-index__sticky {
    position: sticky;
    top: 18px;
  }

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

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-item__q {
    gap: 0.5rem;
  }

  .page-faq .faq-item__num {
    min-width: 1.25rem;
  }

  .page-faq .faq-item__a {
    padding-left: 1.75rem;
  }

  .page-faq .faq-item__a::before {
    left: 0.42rem;
  }

  .page-faq .faq-contact__bar {
    border-left-width: 3px;
    padding: 1.1rem 1.05rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__q,
  .page-faq .faq-index__list a {
    transition: none;
  }
}