.page-faq {
  --faq-rule: var(--line);
  --faq-panel: var(--turf-700);
  --faq-soft: var(--turf-800);
  display: block;
  padding-bottom: clamp(3rem, 9vw, 6rem);
}

.page-faq .breadcrumb {
  margin-top: clamp(1rem, 3vw, 1.75rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(1.5rem, 5vw, 3rem);
  align-items: end;
  padding: clamp(1.5rem, 5vw, 3rem) clamp(1rem, 4vw, 2.5rem) clamp(1.75rem, 5vw, 3rem);
  margin-top: clamp(1rem, 3vw, 1.75rem);
  margin-bottom: clamp(2.5rem, 7vw, 4.5rem);
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 120% at 100% 0%, rgba(18, 48, 37, 0.92) 0%, rgba(11, 15, 13, 0) 66%),
    linear-gradient(180deg, rgba(27, 59, 46, 0.6) 0%, rgba(11, 15, 13, 0.12) 100%);
}

.page-faq .faq-hero h1 {
  margin: 0.75rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.4vw, 3.25rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  max-width: 15ch;
}

.page-faq .faq-hero__lead {
  margin: 1.1rem 0 0;
  max-width: 38ch;
  font-size: clamp(1rem, 2.4vw, 1.075rem);
  line-height: 1.75;
  color: var(--paper);
  opacity: 0.88;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.7rem;
}

.page-faq .faq-hero__media {
  width: 100%;
  max-width: 320px;
  margin: 0;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  justify-self: start;
}

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

/* ---------- 区块通用 ---------- */
.page-faq .faq-block {
  margin-bottom: clamp(2.5rem, 7vw, 4.5rem);
}

.page-faq .section-head h2 {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 4.2vw, 2.05rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
}

.page-faq .faq-block__intro {
  margin: 0.85rem 0 0;
  max-width: 40ch;
  color: var(--muted);
  line-height: 1.75;
}

/* ---------- 三步流程 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-faq .faq-step {
  padding: 1.3rem 1.2rem 1.5rem;
  border: 1px solid var(--faq-rule);
  background: linear-gradient(160deg, rgba(27, 59, 46, 0.94), rgba(18, 33, 28, 0.94));
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.38);
}

.page-faq .faq-step__no {
  display: block;
  color: var(--lime);
  font-size: 1.5rem;
  line-height: 1;
}

.page-faq .faq-step h3 {
  margin: 0.7rem 0 0.5rem;
  font-size: 1.075rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.72;
}

.page-faq .faq-flow {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  overflow: hidden;
}

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

/* ---------- 问答布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-faq .faq-index {
  padding-top: 1rem;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-index__title {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0.4rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius-pill);
  color: var(--paper);
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-index__link .num {
  color: var(--lime);
  font-size: 0.78rem;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
  background: rgba(199, 240, 74, 0.08);
  outline: none;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  padding: clamp(1.5rem, 4vw, 2.4rem) 0;
  border-top: 1px solid var(--faq-rule);
  scroll-margin-top: 100px;
}

.page-faq .faq-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-q {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.7rem;
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.15rem, 3.4vw, 1.5rem);
  line-height: 1.32;
  letter-spacing: -0.01em;
}

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

.page-faq .faq-a {
  margin: 0;
  max-width: 40em;
  color: var(--paper);
  opacity: 0.9;
  line-height: 1.78;
}

.page-faq .faq-ops {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-op {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.8rem;
  align-items: start;
  padding: 0.8rem 0.95rem;
  border-left: 2px solid var(--lime);
  background: linear-gradient(90deg, rgba(199, 240, 74, 0.09), rgba(199, 240, 74, 0) 64%);
  font-size: 0.94rem;
  line-height: 1.72;
}

.page-faq .faq-op .num {
  color: var(--lime);
  font-weight: 700;
}

/* ---------- 字段表 ---------- */
.page-faq .faq-fields {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-field {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-field__key {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: baseline;
  margin: 0 0 0.3rem;
  font-size: 0.98rem;
  font-weight: 700;
}

.page-faq .faq-field__key .index {
  color: var(--muted);
}

.page-faq .faq-field__val {
  margin: 0;
  max-width: 44em;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.72;
}

/* ---------- 延伸说明折叠 ---------- */
.page-faq .faq-more {
  margin-top: 1rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  background: rgba(22, 33, 28, 0.62);
}

.page-faq .faq-more summary {
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: 0.92rem;
}

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

.page-faq .faq-more summary::before {
  content: "+";
  display: inline-block;
  width: 1.2em;
  color: var(--lime);
  font-family: var(--font-mono);
}

.page-faq .faq-more[open] summary::before {
  content: "−";
}

.page-faq .faq-more p {
  margin: 0.6rem 0 0;
  max-width: 44em;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.72;
}

.page-faq .faq-more summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* ---------- 工具阶段标签页 ---------- */
.page-faq .faq-tabs {
  margin-top: 1.3rem;
}

.page-faq .faq-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-tab {
  appearance: none;
  padding: 0.45rem 0.95rem;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 0.88rem;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-tab:hover {
  color: var(--paper);
  border-color: var(--muted);
}

.page-faq .faq-tab[aria-selected="true"] {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
  font-weight: 700;
}

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

.page-faq .faq-tabpanel {
  padding-top: 1.1rem;
}

.page-faq .faq-tabpanel:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}

.page-faq .faq-state {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
  margin: 0 0 0.7rem;
  max-width: 46em;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.72;
}

.page-faq .faq-link {
  margin: 1.25rem 0 0;
}

/* ---------- 尾部提示 ---------- */
.page-faq .faq-next {
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(18, 48, 37, 0.92), rgba(11, 15, 13, 0.6));
}

.page-faq .faq-next__lead {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 3vw, 1.35rem);
  line-height: 1.35;
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  margin-top: 1.1rem;
}

.page-faq .faq-next__links a {
  padding-bottom: 0.15rem;
  border-bottom: 1px solid var(--faq-rule);
  color: var(--paper);
  font-size: 0.93rem;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-next__links a:hover,
.page-faq .faq-next__links a:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
  outline: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 330px);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .faq-hero__media {
    max-width: 100%;
    justify-self: end;
  }

  .page-faq .faq-hero h1 {
    max-width: 16ch;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    padding: 0 0 0 1.1rem;
    border-top: 0;
    border-left: 1px solid var(--faq-rule);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    padding: 0.55rem 0;
    border: 0;
    border-radius: 0;
    color: var(--muted);
    font-size: 0.92rem;
    white-space: normal;
  }

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

  .page-faq .faq-item:first-child {
    padding-top: clamp(1.5rem, 4vw, 2.4rem);
  }
}

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