.page-faq {
  --faq-soft: #C4CBC6;
  --faq-rule-soft: rgba(46, 74, 64, 0.85);
  --faq-accent: var(--signal-mint);
  --faq-gap: clamp(2.25rem, 5.5vw, 3.75rem);
  color: var(--paper-white);
  padding-bottom: clamp(3rem, 7vw, 5.5rem);
}

.page-faq a:focus-visible {
  outline: 2px solid var(--data-cyan);
  outline-offset: 3px;
}

/* ---------- 刊头区 ---------- */

.page-faq .faq-hero {
  padding: clamp(1.4rem, 4vw, 2.4rem) 0 clamp(2.5rem, 6vw, 4rem);
  border-bottom: var(--rule);
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 0.9rem;
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6.2vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: -0.015em;
  color: var(--paper-white);
}

.page-faq .faq-hero__lede {
  margin: 1.4rem 0 0;
  max-width: 62ch;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .faq-hero__keys {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 2rem;
  margin: 1.7rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.87rem;
  letter-spacing: 0.02em;
  color: var(--fog-gray);
}

.page-faq .faq-hero__keys .mono-tag {
  margin-right: 0.45rem;
  color: var(--signal-mint);
}

/* ---------- 路径缩略图 ---------- */

.page-faq .faq-route {
  margin: clamp(2rem, 5vw, 3rem) 0 0;
}

.page-faq .faq-route__svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 92px;
  overflow: visible;
}

.page-faq .faq-route__line {
  fill: none;
  stroke: var(--line-green);
  stroke-width: 1.5;
  stroke-dasharray: 6 6;
}

.page-faq .faq-route__dot {
  fill: var(--signal-mint);
}

.page-faq .faq-route__dot--end {
  fill: var(--track-orange);
}

.page-faq .faq-route__caption {
  margin-top: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--fog-gray);
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 3rem);
  padding-top: clamp(2.25rem, 5.5vw, 3.5rem);
}

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

.page-faq .faq-index__list {
  margin: 0.9rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list li + li {
  border-top: 1px dashed var(--faq-rule-soft);
}

.page-faq .faq-index__list a {
  display: flex;
  gap: 0.7rem;
  align-items: baseline;
  padding: 0.62rem 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--faq-soft);
  text-decoration: none;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--signal-mint);
  transform: translateX(3px);
}

.page-faq .faq-index__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--signal-mint);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-index__list a:hover .faq-index__num {
  color: var(--data-cyan);
}

.page-faq .faq-index__aside {
  margin-top: 1.75rem;
  padding: 1rem 1.1rem 1.15rem;
}

.page-faq .faq-index__aside .rule-label {
  margin: 0 0 0.55rem;
}

.page-faq .faq-index__aside a {
  display: block;
  padding: 0.4rem 0;
  font-size: 0.87rem;
  line-height: 1.5;
  color: var(--faq-soft);
  text-decoration: none;
  border-bottom: 1px dashed var(--faq-rule-soft);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-faq .faq-index__aside a:last-child {
  border-bottom: 0;
}

.page-faq .faq-index__aside a:hover,
.page-faq .faq-index__aside a:focus-visible {
  color: var(--signal-mint);
  padding-left: 0.35rem;
}

/* ---------- 步骤卡片 ---------- */

.page-faq .faq-steps {
  display: grid;
  gap: var(--faq-gap);
  min-width: 0;
}

.page-faq .faq-step {
  position: relative;
  min-width: 0;
  padding: clamp(1.35rem, 3.6vw, 2.25rem);
  border: 1px solid var(--line-green);
  background: linear-gradient(180deg, rgba(18, 33, 29, 0.75) 0%, rgba(11, 20, 18, 0.22) 100%);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 54px;
  height: 3px;
  background: var(--faq-accent);
}

.page-faq .faq-step--orange {
  --faq-accent: var(--track-orange);
}

.page-faq .faq-step__head {
  display: flex;
  align-items: baseline;
  gap: clamp(0.75rem, 2.5vw, 1.35rem);
  margin-bottom: 1rem;
}

.page-faq .faq-step__num {
  flex: none;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--faq-accent);
}

.page-faq .faq-step h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 3.2vw, 1.85rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper-white);
}

.page-faq .faq-step__body.prose {
  max-width: 68ch;
}

.page-faq .faq-step__body.prose p {
  margin: 0;
  color: var(--faq-soft);
  line-height: 1.85;
}

/* ---------- 带编号的短步骤 ---------- */

.page-faq .faq-mini {
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqmini;
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-mini li {
  position: relative;
  padding-left: 2.2rem;
  font-size: 0.97rem;
  line-height: 1.7;
  color: var(--faq-soft);
  counter-increment: faqmini;
}

.page-faq .faq-mini li::before {
  content: counter(faqmini, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--faq-accent);
}

/* ---------- 图文分栏 ---------- */

.page-faq .faq-step__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3.5vw, 2rem);
  align-items: start;
}

.page-faq .faq-step .figure {
  margin: 1.4rem 0 0;
}

.page-faq .faq-step__split .figure {
  margin: 0;
}

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

.page-faq .faq-step__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-qa {
  margin-top: 1.45rem;
  border-top: 1px solid var(--line-green);
}

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

.page-faq .faq-qa__item summary {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 1rem 0;
  list-style: none;
  cursor: pointer;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--paper-white);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-qa__item summary::before {
  content: "+";
  flex: none;
  width: 1.1em;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.4;
  text-align: center;
  color: var(--signal-mint);
}

.page-faq .faq-qa__item[open] summary::before {
  content: "\2212";
  color: var(--track-orange);
}

.page-faq .faq-qa__item summary:hover,
.page-faq .faq-qa__item summary:focus-visible {
  color: var(--signal-mint);
}

.page-faq .faq-qa__answer {
  margin: 0 0 1.2rem 1.25rem;
  padding-left: 1rem;
  max-width: 64ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--faq-soft);
  border-left: 2px solid var(--faq-rule-soft);
}

/* ---------- 结尾行动区 ---------- */

.page-faq .faq-next {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--line-green);
  border-top: 3px solid var(--track-orange);
  background: var(--deep-pine);
}

.page-faq .faq-next h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 3.2vw, 1.9rem);
  line-height: 1.25;
  color: var(--paper-white);
}

.page-faq .faq-next p {
  margin: 0.9rem 0 0;
  max-width: 64ch;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-qa__answer {
    margin-left: 1.9rem;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-step__split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(2.5rem, 5vw, 4.5rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 5rem;
  }
}

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

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    transform: none;
  }
}