.page-faq {
  --faq-gap: clamp(48px, 7vw, 96px);
  --faq-radius: var(--r-lg);
  color: var(--mist);
  background: var(--ink);
  padding-bottom: clamp(56px, 8vw, 104px);
  overflow-x: hidden;
}

.page-faq [id] {
  scroll-margin-top: 96px;
}

.page-faq .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--ash);
}

.page-faq .crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-strong);
}

.page-faq .crumbs a {
  color: var(--ash);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}

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

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-faq .faq-hero-frame {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 22px;
  padding: 26px 20px 30px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background:
    linear-gradient(158deg, rgba(18, 51, 41, 0.62) 0%, rgba(6, 17, 14, 0.94) 62%);
  overflow: hidden;
}

.page-faq .faq-hero-frame::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -1px;
  width: 220px;
  height: 92px;
  background: linear-gradient(120deg, transparent 0%, rgba(198, 255, 61, 0.12) 100%);
  transform: skewX(-12deg);
  pointer-events: none;
}

.page-faq .faq-hero-side {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--ash);
}

.page-faq .faq-hero-rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}

.page-faq .faq-eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--lime);
}

.page-faq h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 5.2vw, 46px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 20ch;
}

.page-faq .lead {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 62ch;
}

.page-faq .faq-hero-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero-jump a {
  text-decoration: none;
}

/* ---------- 章节骨架 ---------- */

.page-faq .faq-sec {
  padding-block: var(--faq-gap);
}

.page-faq .faq-sec--tight {
  padding-block: clamp(36px, 5vw, 68px);
}

.page-faq .chapter {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 6px 16px;
  margin-bottom: 30px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .chapter-num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 42px);
  font-weight: 600;
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-faq .chapter-kicker {
  grid-column: 2;
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ash);
}

.page-faq .chapter-title {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-intro {
  margin: 0 0 26px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ash);
}

/* ---------- 01 现象索引 ---------- */

.page-faq .faq-idx {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-idx-link {
  position: relative;
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 18px 6px 18px 0;
  border-bottom: 1px solid var(--line-soft);
  text-decoration: none;
  color: var(--mist);
  transition: background var(--t-fast);
}

.page-faq .faq-idx-mark {
  grid-row: span 2;
  align-self: start;
  width: 8px;
  height: 8px;
  margin-top: 9px;
  border-radius: 2px;
  background: var(--raise);
  border: 1px solid var(--line-strong);
  transition: background var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-idx-t {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 5px;
  transition: text-decoration-color var(--t-fast), color var(--t-fast);
}

.page-faq .faq-idx-d {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ash);
}

.page-faq .faq-idx-link:hover .faq-idx-t,
.page-faq .faq-idx-link:focus-visible .faq-idx-t {
  color: var(--lime);
  text-decoration-color: var(--lime);
}

.page-faq .faq-idx-link:hover .faq-idx-mark,
.page-faq .faq-idx-link:focus-visible .faq-idx-mark {
  background: var(--lime);
  border-color: var(--lime);
}

/* ---------- 02 步骤卡 ---------- */

.page-faq .faq-flow-figure {
  margin: 0 0 30px;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .faq-step {
  position: relative;
  padding: 24px 20px 24px 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color var(--t-fast), transform var(--t-fast);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  border-radius: 0 2px 2px 0;
  background: var(--lime);
}

.page-faq .faq-step:target {
  border-color: var(--lime);
}

.page-faq .faq-step:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-step h3 {
  margin: 12px 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-flow {
  display: block;
  width: 100%;
  max-width: 480px;
  height: auto;
  margin: 30px 0 0;
}

/* ---------- 03 三种情形 ---------- */

.page-faq .faq-causes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .faq-cause {
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(18, 51, 41, 0.55), rgba(12, 31, 25, 0.9));
}

.page-faq .faq-cause--warn {
  background: linear-gradient(180deg, rgba(255, 106, 43, 0.1), rgba(12, 31, 25, 0.92));
  border-color: rgba(255, 106, 43, 0.34);
}

.page-faq .faq-cause .tag {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
  border: 1px solid var(--line-strong);
}

.page-faq .faq-cause .tag--warn {
  color: var(--orange);
  border-color: rgba(255, 106, 43, 0.5);
}

.page-faq .faq-cause h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .faq-cause p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-cause-verdict {
  margin-top: 12px !important;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 14px !important;
  color: var(--ash) !important;
}

.page-faq .faq-note {
  margin-top: 24px;
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  border-radius: var(--r-md);
  background: rgba(12, 31, 25, 0.62);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-faq .faq-note-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--lime);
}

.page-faq .faq-note h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .faq-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--mist);
}

/* ---------- 04 导出文件 ---------- */

.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

.page-faq .faq-checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .faq-check {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-check:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-faq .faq-check-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--r-sm);
  background: var(--raise);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-check h3 {
  margin: 4px 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-faq .faq-check p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-after {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line-strong);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ash);
}

.page-faq .faq-split-fig {
  margin: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
}

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

/* ---------- 05 术语 ---------- */

.page-faq .faq-glossary {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 6px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(12, 31, 25, 0.58);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-faq .faq-term {
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-term:last-child {
  border-bottom: none;
}

.page-faq .faq-term dt {
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--lime);
}

.page-faq .faq-term dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 06 延伸阅读 ---------- */

.page-faq .faq-more {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-more a {
  display: grid;
  gap: 6px;
  padding: 20px 30px 20px 0;
  border-bottom: 1px solid var(--line-soft);
  text-decoration: none;
  position: relative;
  transition: background var(--t-fast);
}

.page-faq .faq-more a::after {
  content: "→";
  position: absolute;
  right: 4px;
  top: 22px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ash);
  transition: color var(--t-fast), transform var(--t-fast);
}

.page-faq .faq-more-t {
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
  transition: color var(--t-fast);
}

.page-faq .faq-more-d {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ash);
}

.page-faq .faq-more a:hover .faq-more-t,
.page-faq .faq-more a:focus-visible .faq-more-t {
  color: var(--lime);
}

.page-faq .faq-more a:hover::after,
.page-faq .faq-more a:focus-visible::after {
  color: var(--lime);
  transform: translateX(4px);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-idx {
    grid-template-columns: 1fr 1fr;
    column-gap: 44px;
  }

  .page-faq .faq-idx-link {
    padding-right: 12px;
  }

  .page-faq .faq-glossary {
    grid-template-columns: 1fr 1fr;
    column-gap: 36px;
  }

  .page-faq .faq-term:nth-last-child(2) {
    border-bottom: none;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero-frame {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 28px;
    padding: 38px 40px 42px;
  }

  .page-faq .faq-hero-side {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 14px;
    padding-top: 6px;
  }

  .page-faq .faq-hero-rule {
    flex: none;
    width: 1px;
    height: 92px;
  }

  .page-faq .faq-steps {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    gap: 20px 24px;
  }

  .page-faq .faq-causes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 40px;
  }

  .page-faq .faq-note {
    padding: 28px 32px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-sec {
    padding-left: 0;
    padding-right: 0;
  }

  .page-faq .faq-more a {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-idx-link,
  .page-faq .faq-idx-mark,
  .page-faq .faq-idx-t,
  .page-faq .faq-step,
  .page-faq .faq-more a,
  .page-faq .faq-more a::after {
    transition: none;
  }

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