.page-faq {
  --faq-max: 1280px;
  --faq-pad: 20px;
  --faq-index-w: 208px;
  color: var(--paper);
}

/* 首屏：框景 + 网格底纹 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 17, 15, 0.94) 0%, rgba(14, 26, 22, 0.86) 62%, var(--bg) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.42;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(120% 92% at 16% 8%, #000 0%, transparent 76%);
  mask-image: radial-gradient(120% 92% at 16% 8%, #000 0%, transparent 76%);
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: 26px var(--faq-pad) 34px;
}

.page-faq .breadcrumb {
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-faq .hero-grid {
  display: grid;
  gap: 24px;
}

.page-faq .hero-lead h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 7.4vw, 56px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
  overflow-wrap: break-word;
}

.page-faq .hero-text {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.75;
  color: rgba(242, 239, 230, 0.78);
}

.page-faq .hero-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(42, 59, 50, 0.42);
  padding: 16px;
  box-shadow: inset 0 1px 0 rgba(242, 239, 230, 0.05);
}

.page-faq .panel-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-faq .panel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242, 239, 230, 0.72);
}

.page-faq .panel-key {
  display: inline-block;
  min-width: 3.4em;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--rock);
}

/* 主体：左索引 + 右回答 */
.page-faq .faq-body {
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: 30px var(--faq-pad) 72px;
  display: grid;
  gap: 26px;
}

.page-faq .faq-index {
  border-top: 1px solid var(--line-strong);
  padding-top: 14px;
}

.page-faq .index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index-list > li {
  flex: 0 0 auto;
  min-width: 0;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 11px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(18, 17, 15, 0.35);
  color: rgba(242, 239, 230, 0.74);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-index-link:hover {
  color: var(--paper);
  border-color: var(--lime);
  background: rgba(198, 255, 61, 0.06);
}

.page-faq .faq-index-link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
  color: var(--paper);
}

.page-faq .idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--lime);
}

.page-faq .index-foot {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

.page-faq .index-foot a {
  color: var(--pulse);
  text-decoration: none;
  border-bottom: 1px solid rgba(76, 224, 200, 0.4);
}

.page-faq .faq-answers {
  display: grid;
  gap: 20px;
  min-width: 0;
}

/* 回答卡 */
.page-faq .qa {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(42, 59, 50, 0.34) 0%, rgba(18, 17, 15, 0.3) 100%);
  padding: 20px 16px 22px 20px;
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--lime), rgba(198, 255, 61, 0));
}

.page-faq .qa--manual::before {
  background: linear-gradient(180deg, var(--clay), rgba(180, 116, 79, 0));
}

.page-faq .qa-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.page-faq .qa-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--lime);
  padding: 3px 7px;
  border-radius: 2px;
}

.page-faq .qa-head h2 {
  flex: 1 1 240px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 4.6vw, 30px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .qa-head .badge {
  margin-left: auto;
}

.page-faq .qa-lead {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(242, 239, 230, 0.8);
}

.page-faq .qa-lead a,
.page-faq .steps a {
  color: var(--pulse);
  text-decoration: none;
  border-bottom: 1px solid rgba(76, 224, 200, 0.38);
}

.page-faq .qa-lead a:focus-visible,
.page-faq .steps a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* 现象对照 */
.page-faq .symptom-grid {
  display: grid;
  gap: 12px;
}

.page-faq .symptom {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--moss);
  border-radius: var(--radius);
  background: rgba(18, 17, 15, 0.45);
  padding: 14px;
}

.page-faq .symptom h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .symptom p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(242, 239, 230, 0.66);
}

.page-faq .symptom-next {
  margin-top: auto;
  padding-top: 9px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--lime) !important;
}

/* 步骤 */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .steps > li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 10px 12px 0;
  border-top: 1px solid var(--line-soft);
  transition: background-color 0.18s ease;
}

.page-faq .steps > li:first-child {
  border-top: 0;
}

.page-faq .steps > li:hover {
  background: rgba(198, 255, 61, 0.035);
}

.page-faq .step-i {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(18, 17, 15, 0.5);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--rock);
}

.page-faq .steps > li.is-manual .step-i {
  color: var(--clay);
  border-color: rgba(180, 116, 79, 0.55);
}

.page-faq .steps h3 {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .steps p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(242, 239, 230, 0.7);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 18px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--rock);
}

.page-faq .faq-figure--tall img {
  max-height: 520px;
  object-position: center 35%;
}

/* 提醒通道 */
.page-faq .channel-grid {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
}

.page-faq .channel {
  display: grid;
  gap: 6px;
  border: 1px solid rgba(76, 224, 200, 0.22);
  border-radius: var(--radius);
  background: rgba(76, 224, 200, 0.05);
  padding: 12px;
}

.page-faq .channel-name {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--pulse);
}

.page-faq .channel p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: rgba(242, 239, 230, 0.68);
}

/* 尾部 */
.page-faq .faq-tail {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(42, 59, 50, 0.5), rgba(18, 17, 15, 0.6));
  padding: 22px 18px;
}

.page-faq .faq-tail h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 4.4vw, 26px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-tail p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(242, 239, 230, 0.78);
}

.page-faq .contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--lime);
  overflow-wrap: anywhere;
}

.page-faq .tail-links {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 14px;
}

.page-faq .tail-links a {
  color: rgba(242, 239, 230, 0.82);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.page-faq .tail-links a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

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

/* 断点 */
@media (min-width: 620px) {
  .page-faq {
    --faq-pad: 28px;
  }

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

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

  .page-faq .qa {
    padding: 24px 24px 26px 28px;
  }

  .page-faq .faq-tail {
    padding: 26px 24px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    padding: 32px var(--faq-pad) 44px;
  }

  .page-faq .hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.75fr);
    gap: 44px;
    align-items: end;
  }

  .page-faq .hero-panel {
    padding: 18px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 48px;
    padding-top: 44px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
    align-self: start;
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index-list > li + li {
    margin-top: 2px;
  }

  .page-faq .faq-index-link {
    white-space: normal;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: transparent;
    padding: 10px 12px;
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    border-left-color: var(--lime);
    background: rgba(198, 255, 61, 0.06);
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-answers {
    gap: 22px;
  }

  .page-faq .qa {
    padding: 26px 30px 30px 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-link,
  .page-faq .steps > li {
    transition: none;
  }
}